CN105594367B - A kind of tail gas recycle type harvesting device - Google Patents
A kind of tail gas recycle type harvesting device Download PDFInfo
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- CN105594367B CN105594367B CN201610189011.8A CN201610189011A CN105594367B CN 105594367 B CN105594367 B CN 105594367B CN 201610189011 A CN201610189011 A CN 201610189011A CN 105594367 B CN105594367 B CN 105594367B
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- 238000003306 harvesting Methods 0.000 title claims abstract description 89
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 8
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 claims description 97
- 230000033228 biological regulation Effects 0.000 claims description 60
- 239000006200 vaporizer Substances 0.000 claims description 55
- 238000000605 extraction Methods 0.000 claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 50
- 230000008878 coupling Effects 0.000 claims description 40
- 238000010168 coupling process Methods 0.000 claims description 40
- 238000005859 coupling reaction Methods 0.000 claims description 40
- 239000000498 cooling water Substances 0.000 claims description 36
- 230000000694 effects Effects 0.000 claims description 35
- 238000001704 evaporation Methods 0.000 claims description 28
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 24
- 108090000565 Capsid Proteins Proteins 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000013021 overheating Methods 0.000 claims description 13
- 230000008020 evaporation Effects 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 230000008450 motivation Effects 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 3
- 230000001550 time effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 141
- 238000000034 method Methods 0.000 description 22
- 238000011084 recovery Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 17
- 230000008016 vaporization Effects 0.000 description 16
- 230000008859 change Effects 0.000 description 11
- 238000012546 transfer Methods 0.000 description 11
- 238000009834 vaporization Methods 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 10
- 239000012535 impurity Substances 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000009123 feedback regulation Effects 0.000 description 6
- 230000010354 integration Effects 0.000 description 6
- 230000001172 regenerating effect Effects 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 5
- 239000002826 coolant Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 239000002912 waste gas Substances 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 3
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D43/00—Mowers combined with apparatus performing additional operations while mowing
- A01D43/06—Mowers combined with apparatus performing additional operations while mowing with means for collecting, gathering or loading mown material
- A01D43/063—Mowers combined with apparatus performing additional operations while mowing with means for collecting, gathering or loading mown material in or into a container carried by the mower; Containers therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of tail gas recycle type harvesting device, including harvesting wheel, cutter, induced-draught fan, delivery pipe, storaging bucket, scraper bowl and engine power retracting device, the harvesting wheel is arranged on the front end of scraper bowl, cutter are arranged on the lower section of harvesting wheel, and induced-draught fan is arranged on the bottom of harvesting device；Agriculture thing is incorporated into scraper bowl in the presence of harvesting wheel and cutter, and forming negative-pressure sucking in harvesting device when induced-draught fan is operated is transported to the agriculture material in scraper bowl in storaging bucket by delivery pipe；The harvesting device is by engine driving, and engine power retracting device is used for the heat for reclaiming motor exhaust.The harvesting device is simple and practical, can realize that the automatic harvesting storage of agriculture thing is easy to operate, and engine exhaust energy secondary can be utilized, energy-conserving and environment-protective.
Description
Technical field
Field is gathered in the present invention relates to agriculture thing, and in particular to a kind of tail gas recycle type harvesting device.
Background technology
It is the integrated machinery for gathering in crops to harvester, completes harvesting, threshing, and grain is focused on into repository,
Then grain is transported on transport vehicle by conveyer belt.Also hand harvest can be used, the straw of the crops such as paddy and wheat is laid in
Field, then carries out pickup threshing with cereal harvesting machinery again.Existing harvesting device has that structure is excessively complicated, integrated journey
Spend relatively low, energy consumption higher-energy can not secondary utilization the problems such as.
The content of the invention
In view of the above-mentioned problems, the present invention provides a kind of tail gas recycle type harvesting device.
The purpose of the present invention is realized using following technical scheme：
A kind of tail gas recycle type harvesting device, it is characterized in that, including harvesting wheel, cutter, induced-draught fan, delivery pipe, material stock
Bucket, scraper bowl and engine power retracting device, the harvesting wheel are arranged on the front end of scraper bowl, and cutter are arranged under harvesting wheel
Side, induced-draught fan is arranged on the bottom of harvesting device；Agriculture thing is incorporated into scraper bowl in the presence of harvesting wheel and cutter, air draught
Machine forms negative-pressure sucking in harvesting device when operating and is transported to the agriculture material in scraper bowl in storaging bucket by delivery pipe；It is described to receive
Device is cut by engine driving, engine power retracting device is used for the heat for reclaiming motor exhaust, it include radiator,
Engine, backwater evaporator, high temperature heat-exchanging loop, low-temperature heat exchange loop, batteries, inverter and frequency converter, backpressure regulation
Blower fan；The radiator is connected with engine, and the heat of engine is transferred on radiator by radiator by cooling water, and is led to
Cross the surface radiating of radiator；The tail gas of engine sequentially passes through backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer cooling
Heel row is to air；
High temperature heat-exchanging loop include be sequentially connected high temperature circulation pump, high-temperature evaporator, high temperature multistage expansion turbine and
The medium of flowing is water in warm condenser, high temperature heat-exchanging loop, and high-temperature evaporator is arranged on the high temperature after backpressure regulation blower fan
On exhaust pipe, the WATER AS FLOW MEDIUM cooled down through warm condenser is squeezed into high-temperature evaporator by high temperature circulation pump, the medium after heating
Water subsequently enters the acting of high temperature multistage expansion turbine；
Low-temperature circulating pump, cryogenic vaporizer, intermediate extraction superheater, the low temperature that low-temperature heat exchange loop includes being sequentially connected are more
The medium flowed in level expanding machine and low-temperature condenser, low-temperature heat exchange loop is R245fa, and cryogenic vaporizer is arranged on through too high
On low temperature exhaust gas pipeline after warm evaporator；The medium R245fa cooled down through low-temperature condenser squeezes into low temperature by low-temperature circulating pump and steamed
Send out in device, the WATER AS FLOW MEDIUM after heating enters the acting of low temperature multistage expanding machine after the heating of intermediate extraction superheater；Intermediate extraction
Superheater is pipe heat exchanger, and intergrade of the heat source from high temperature multistage expansion turbine is drawn gas；Also include regulating valve, institute
Regulating valve is stated according to the pressure feedback in the R245fa temperature feedbacks and high temperature multistage expansion turbine after intermediate extraction superheater,
For adjusting the flow that intergrade is drawn gas, R245fa temperature feedbacks value after intermediate extraction superheater is more than or less than setting
Intermediate extraction superheater after R245fa temperature values when, turn down or open automatically the aperture of big regulating valve, at the same when high temperature it is many
When pressure feedback value in level turbo-expander is less than the pressure atresia value in the high temperature multistage expansion turbine of setting, close automatically
Lock regulating valve to open, the intergrade after heating, which is drawn gas, is back to high temperature recuperated cycle loop；High-temperature evaporator and cryogenic vaporizer
The distance between L be the 3/4 of exhaust pipe road overall length, high temperature multistage expansion turbine is 3 grades of expanding machines, and intergrade, which is drawn gas, to be taken
From the 2nd grade of high temperature multistage expansion turbine；
High-temperature evaporator and cryogenic vaporizer use screen formula-spiral heat exchange tube, and the front half section in gas inlet side is adopted
With the screen formula heat exchanger tube being staggered in arrangement, the second half section uses spiral heat exchange tube；CWR of the engine to radiator
Backwater evaporator is additionally provided with road, the heat for reclaiming engine cooling water backwater, its cooling source is derived from low-temperature circulating pump
Centre tap, it is heated after the R245fa that comes out of centre tap return to the porch of intermediate extraction superheater；The high temperature
Evaporator and cryogenic vaporizer are integrally provided in the heat exchange housing of drum type brake, and heat exchange housing passes through spiral shell by procapsid and back casing
Bolt is fastened and formed, and the length of procapsid is identical with the horizontal length of screen formula heat exchanger tube, the length of back casing and spiral heat exchange tube
Horizontal length is identical；Multiple vibrators are provided with the screen formula heat exchanger tube, vibrator is powered by batteries；The procapsid
Bottom it is curved, be additionally provided with sewage draining exit at the minimum point of curved bottom, for periodically discharge screen formula heat exchanger tube on shake
Dirt；
It is coaxially connected by shaft coupling between low temperature multistage expanding machine and high temperature multistage expansion turbine, start just in system
R245fa in phase, low-temperature heat exchange loop reaches vapourizing temperature, low temperature multistage expansion prow prior to the water in high temperature heat-exchanging loop
First start, while driving high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling, play reduction high temperature multistage turbine swollen
The startup pressure of swollen machine, shortens the effect of startup time；When system stops, the coasting operation first of high temperature multistage expansion turbine subtracts
Speed, while driving low temperature multistage expanding machine to slow down by shaft coupling, to reduce the idling time of cryogenic expansion machine, plays reduction low
The air blast friction of warm multiple expansion engine, the effect for preventing blade from overheating；
Also include batteries, inverter and frequency converter, one end of high temperature multistage expansion turbine is connected with batteries,
Batteries are used to store the electric energy being transformed by the kinetic energy of expanding machine；Batteries are connected with inverter and frequency converter, inverse
Becoming device is used for the DC inverter of battery into alternating current, and frequency converter is used to drive backpressure regulation blower fan and adjusts its rotating speed；
Backpressure regulation blower fan is used for the back pressure for lowering and controlling engine, feeds back to adjust the back of the body by the pressure at expulsion detected during operation
The rotating speed of pressure regulation blower fan is so as to adjust back pressure in optimum value.
Preferably, the low temperature multistage expanding machine and high temperature multistage expansion turbine pass through high temperature inlet valve and low temperature respectively
The respective throttle flow of air inlet valve regulation, the high temperature inlet valve used and the stability of flow area of low temperature air inlet valve is 30%~100%
Metered flow, when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are more than 30% respective metered flow, high temperature enters vapour
Valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, by adjust the rotating speed of high temperature circulation pump or low-temperature circulating pump come
Change exerting oneself for expanding machine；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are less than 30% respective metered flow,
Keep the rotating speed of high temperature circulation pump or low-temperature circulating pump constant, by controlling the aperture of high temperature inlet valve or low temperature inlet valve to adjust
Save exerting oneself for expanding machine.
The beneficial effect of this harvesting device：The harvesting device is simple and practical, can realize the automatic harvesting storage of agriculture thing
It is easy to operate, and engine exhaust energy secondary can utilize, energy-conserving and environment-protective；The off gas energy recovery system of engine is devised,
According to the heat recovery demand of different temperatures section and the evaporating temperature and the difference of heat transfer characteristic of medium, in high temperature section and low temperature
Circulatory mediator different Duan Caiyong, so as to improve the heat exchange efficiency of system on the whole；By the way that the relatively low low temperature of pressure is followed
Ring pump centre tap leads to the backwater that backwater evaporator cools down engine cooling water, can be same in recovery motor exhaust used heat
The heat of Shi Huishou cooling waters, and energy-saving effect is obvious；Screen formula-spiral that a kind of suitable tail gas heat exchange is used is redesigned
Heat exchanger tube, was both convenient to clean, and heat exchange efficiency is added again；Pass through recovering energy part for by inverter and frequency converter
Backpressure regulation blower fan, and the rotating speed of the feedback regulation backpressure regulation blower fan according to exhaust back pressure are driven, is being realized without extraneous electricity
By backpressure regulation and energy regenerating integration while the driving blower fan of source, investment and space hold are greatlyd save；Utilize high temperature
The intergrade of multistage expansion turbine is drawn gas, and drawing gas for this part expands in high temperature multistage expansion turbine by one section
Process, the medium R245fa into before low temperature multistage expanding machine is heated using its remaining heat, on the one hand can be ensured
R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, so as to improve
The whole efficiency of energy recycle device；Coaxially connected by shaft coupling between low temperature multistage expanding machine and high temperature multistage expansion turbine
Connect, at the initial stage started in system, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop is prior in high temperature heat-exchanging loop
Water reach vapourizing temperature, low temperature multistage expanding machine starts first, while passing through shaft coupling drives high temperature multistage expansion turbine
Low speed is rotated in advance, can so effectively reduce the startup pressure of high temperature multistage expansion turbine, is shortened the startup time, is stopped in system
When only, the coasting operation first of high temperature multistage expansion turbine is slowed down, while driving low temperature multistage expanding machine to slow down by shaft coupling, to subtract
The idling time of few cryogenic expansion machine, because the medium temperature in stopped process in expanding machine is also higher, is now primarily served
Reduce the air blast friction of low temperature multistage expanding machine, the effect for preventing blade from overheating；Adjusted according to inlet valve under different flow rate working conditions
The consideration of characteristic and restriction loss is saved, the control mode that a kind of rotating speed and inlet valve are combined is devised, restriction loss is being reduced
While maintain the stability of regulation.
Brief description of the drawings
Using accompanying drawing, the invention will be further described, but the embodiment in accompanying drawing does not constitute any limit to the present invention
System, for one of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to the following drawings
Other accompanying drawings.
Fig. 1 is the overall structure diagram of this harvesting device；
Fig. 2 is the structural representation of this energy recycle device；
Fig. 3 is the side view of high-temperature evaporator and cryogenic vaporizer；
Fig. 4 is the front view of high-temperature evaporator and cryogenic vaporizer.
Reference：Radiator -1；Engine -2；Warm condenser -3；Low-temperature condenser -4；High-temperature evaporator -5；It is low
Warm evaporator -6；High temperature multistage expansion turbine -7；Low temperature multistage expanding machine -8；Backwater evaporator -9；High temperature circulation pump -10；
Low-temperature circulating pump -11；Intermediate extraction superheater -12；Batteries -13；Backpressure regulation blower fan -14；Inverter and frequency converter-
15；Regulating valve -16；Screen formula heat exchanger tube -17；Spiral heat exchange tube -18；Shaft coupling -19；Procapsid -20；Back casing -21；Bolt-
22；Sewage draining exit -23；Harvesting wheel -24；Cutter -25；Induced-draught fan -26；Delivery pipe -27；Storaging bucket -28；Scraper bowl -29.
Embodiment
The invention will be further described with the following Examples.
Embodiment 1：
A kind of tail gas recycle type harvesting device as shown in Figure 1, including harvesting wheel 24, cutter 25, induced-draught fan 26, conveying
Pipe 27, storaging bucket 28, scraper bowl 29 and engine power retracting device, the harvesting wheel 24 are arranged on the front end of scraper bowl 29, cutting
Knife 25 is arranged on the lower section of harvesting wheel 24, and induced-draught fan 26 is arranged on the bottom of harvesting device；Agriculture thing is in harvesting wheel 24 and cutter
It is incorporated into the presence of 25 in scraper bowl 29, negative-pressure sucking is formed by scraper bowl 29 in harvesting device when induced-draught fan 26 is operated
Agriculture material is transported in storaging bucket 28 by delivery pipe 27；The harvesting device is driven by engine 2.
As shown in Fig. 2 engine power retracting device is used to reclaim the energy of the tail gas of engine 2, it include radiator 1,
Engine 2, backwater evaporator 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, batteries 13, inverter and frequency converter 15 and the back of the body
Pressure regulation blower fan 14.Radiator 1 is connected with engine 2, and the heat of engine 2 is transferred to radiating by radiator 1 by cooling water
On device 1, and pass through the surface radiating of radiator 1.The tail gas of engine 2 sequentially passes through backpressure regulation blower fan 14, high temperature evaporation
Device 5, cryogenic vaporizer 6 discharge air after cooling down.
High temperature heat-exchanging loop includes high temperature circulation pump 10, high-temperature evaporator 5, the high temperature multistage expansion turbine being sequentially connected
7 and warm condenser 3, the medium of flowing is water in high temperature heat-exchanging loop, and high-temperature evaporator 5 is arranged on after backpressure regulation blower fan 14
High-temperature tail gas pipeline on, the WATER AS FLOW MEDIUM cooled down through warm condenser 3 is squeezed into by high temperature circulation pump 10 and is used in high-temperature evaporator 5
The tail gas of cooling down high-temperature tail gas section, the WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and done work, heat energy is changed
For the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop include be sequentially connected low-temperature circulating pump 11, cryogenic vaporizer 6, intermediate extraction superheater 12,
The medium flowed in low temperature multistage expanding machine 8 and low-temperature condenser 4, low-temperature heat exchange loop is R245fa, and cryogenic vaporizer 6 is installed
Further to reclaim the heat of tail gas on the low temperature exhaust gas pipeline after high-temperature evaporator 5, cooled down through low-temperature condenser 6
Medium R245fa is squeezed into cryogenic vaporizer 6 by low-temperature circulating pump 11, and the WATER AS FLOW MEDIUM after heating passes through intermediate extraction superheater 12
Done work afterwards by low temperature multiple expansion engine 8, convert heat energy into the mechanical energy of low temperature multistage expanding machine 8.Inventor sends out through research
It is existing, in energy recycle device, with water as medium and with R245fa is as the effect of both media and differs, the evaporation of water
Evaporating temperature of the temperature than R245fa is higher by much, therefore is adapted to use in the tail gas section of high temperature；And in the tail gas of low temperature
R245fa is used in section as medium, its evaporation acting is more beneficial for.In addition, this will under the conditions of different pressure and temperatures
Both media are used in combination, and the heat exchange efficiency of system can be also improved on the whole.Intermediate extraction superheater 12 is pipe type heat transfer
Device, intergrade of the heat source from high temperature multistage expansion turbine 7 is drawn gas, and this part is drawn gas in high temperature multistage turbine
By one section of expansion process in expanding machine 7, heated using its remaining heat into the medium before low temperature multistage expanding machine 8
R245fa, on the one hand can ensure R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop,
Cold source energy is avoided, so as to improve the whole efficiency of energy recycle device.Specifically drawing gas series can be according to two expanding machine
In different condition ranges determine.Also include regulating valve 16, regulating valve 16 is according to the R245fa after intermediate extraction superheater 12
Pressure feedback in temperature feedback and high temperature multistage expansion turbine 7, for adjusting the flow that intergrade is drawn gas, works as intermediate extraction
R245fa temperature feedbacks value after superheater 12 is more than or less than the R245fa temperature after the intermediate extraction superheater 12 of setting
During value, the aperture of big regulating valve 16 is turned down or opens automatically, while when the pressure feedback value in high temperature multistage expansion turbine 7 is small
When pressure atresia value in the high temperature multistage expansion turbine 7 of setting, automatic blocking regulating valve 16 is opened (forbids it to continue greatly
Open big), to prevent exerting oneself for high temperature multistage expansion turbine 7 too low, the R245fa temperature after the intermediate extraction superheater 12 of setting
The method that pressure atresia value in angle value and the high temperature multistage expansion turbine 7 of setting passes through experiment according to different concrete conditions
It is manually set, the intergrade after heating, which is drawn gas, is back to high temperature recuperated cycle loop (not shown).In this embodiment, take
The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 3/4 of exhaust pipe road overall length, high temperature multistage expansion turbine
7 be 3 grades of expanding machines, and intergrade, which is drawn gas, is derived from the 2nd grade of high temperature multistage expansion turbine.
As shown in Figure 3,4, it is contemplated that more how long impurity in tail gas, which is not easy to clear up after use, easily blocks,
And heat exchange efficiency is taken into account, high-temperature evaporator 5 and cryogenic vaporizer 6 use the new structure of screen formula-spiral heat exchange tube,
The inlet side of tail gas, using the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked in screen formula and changed
On heat pipe 17, during cleaning easily, while being staggered in arrangement also can effectively reduce the flow resistance of tail gas；And use spiral shell in the second half section
Heat exchanger tube 18 is revolved, heat exchange efficiency is improved to strengthen flow perturbation.The cooling source of warm condenser 3 and low-temperature condenser 4 can take
From air-conditioning refrigerant, other low-temperature receivers can also be derived from, because the after-heat of this part is few, as long as can meet to change
Medium in hot loop, which is re-cooled to liquid, prevents high temperature circulation pump 10 and low-temperature circulating pump 11 from vaporizing.The high temperature steams
Hair device 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange housing of drum type brake, and heat exchange housing is led to by procapsid 20 and back casing 21
Cross bolt 22 and fasten and form, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, the length of back casing 21 and
The horizontal length of spiral heat exchange tube 18 is identical；Multiple vibrator (not shown)s are provided with the screen formula heat exchanger tube 17, are shaken
Device is made to be powered by batteries 13；The bottom of the procapsid 20 is curved, the row of being additionally provided with the minimum point of curved bottom
Dirty mouth 23, for periodically discharging the dirt for shaking to fall on screen formula heat exchanger tube 17.
Backwater evaporator 9 is additionally provided with the CWR road of engine 2 to radiator 1, is started for reclaiming
The heat of machine cooling water backwater, its cooling source is derived from the centre tap of low-temperature circulating pump 11, it is heated after centre tap come out
R245fa return to the porch of intermediate extraction superheater 12.The centre tap of the relatively low low-temperature circulating pump 11 of pressure is led to
Backwater evaporator cools down the backwater of engine cooling water, and the heat of cooling water backwater on the one hand can be reclaimed well, on the other hand
Have more preferably compared to individually setting up a circulation or drawing cooling medium from the outlet of low-temperature circulating pump 11 and high temperature circulation pump 10
Energy-saving effect.
It is coaxially connected by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7, opened in system
At dynamic initial stage, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop reaches vapour prior to the water in high temperature heat-exchanging loop
Change temperature, low temperature multistage expanding machine 8 starts first, while driving high temperature 7 low speed of multistage expansion turbine pre- by shaft coupling 19
Rotate, can so effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, due to now high temperature
Medium temperature in multistage expansion turbine 7 is very low, and high temperature multistage expansion turbine 7 length of blade compared with low temperature multiple expansion
The length of blade of machine 8 is small, the air blast friction very little of blade, almost can be without considering；When system stops, high temperature multistage turbine
The coasting operation first of expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce cryogenic expansion machine 8
Idling time, because the medium temperature in stopped process in expanding machine is also higher, now primarily serve reduction low temperature multistage
The air blast friction of expanding machine 8, the effect for preventing blade from overheating.
One end of high temperature multistage expansion turbine 7 is connected with batteries 13, and batteries 13 are used to store by expanding machine
The electric energy that kinetic energy is transformed.The technology of the electric energy of battery is converted energy on expanding machine, due to prior art
It is very ripe, it will not be repeated here.Batteries 13 are connected with inverter and frequency converter 15, and inverter is used for the direct current of battery
Electric inversion is alternating current, and frequency converter is used to drive backpressure regulation blower fan 14 and adjusts its rotating speed.Energy recycle device is to engine 2
Influence can raise the exhaust back pressure of engine 2 when essentially consisting in engine exhaust by heater in system, and be vented
Power consumption increase when back pressure rise can cause the engine piston waste gas is released to cylinder, therefore set backpressure regulation blower fan 14 can be with
Effectively lower and control the back pressure of engine 2, during operation, feed back to adjust backpressure regulation wind by the pressure at expulsion detected
The rotating speed of machine 14 is so as to adjust back pressure in optimum value, while this drive the side of blower fan using the energy of of batteries 13 itself
Formula has the advantages that not needing external power supply.
Low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 pass through high temperature inlet valve and low temperature air inlet valve (figure respectively
Not shown in) adjust respective throttle flow.The high temperature inlet valve that uses and the stability of flow area of low temperature air inlet valve for 30%~
100% metered flow, either low-temperature heat exchange loop or high temperature heat-exchanging loop, the control of pump and the control of expanding machine, first
The flow of working medium is adjusted by pump, the control to working medium temperature at expander inlet is realized, is expanded when flow changes
Machine must make corresponding adjustment to match flow, if the operation of expanding machine is mismatched with flow, can not only remain stable
Evaporating pressure, the operation of expanding machine can not also keep stable, while according to the characteristic of high temperature inlet valve and low temperature inlet valve, adopting
Adjusted with pressure and speed adjusts the control mode being engaged：When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are more than
During 30% respective metered flow, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, by adjusting high temperature
The rotating speed of circulating pump 10 or low-temperature circulating pump 11 changes exerting oneself for expanding machine；When high temperature heat-exchanging loop or low-temperature heat exchange loop
When circular flow is less than 30% respective metered flow, the control characteristic of inlet valve during due to low discharge is unstable, keeps high temperature
Circulating pump 10 or the rotating speed of low-temperature circulating pump 11 are constant, and expansion is adjusted by controlling the aperture of high temperature inlet valve or low temperature inlet valve
Machine is exerted oneself.
It is simple and practical in the harvesting device of this embodiment, it can realize that the automatic harvesting storage of agriculture thing is easy to operate,
And engine exhaust energy secondary can be utilized, energy-conserving and environment-protective；The exhaust gas recovery system of engine is devised, according to different temperatures section
Heat recovery demand and medium evaporating temperature and the difference of heat transfer characteristic, followed in high temperature section and low-temperature zone using different
Ring medium, so as to improve the heat exchange efficiency of system on the whole；By the way that the relatively low low-temperature circulating pump centre tap of pressure is drawn
Go out to backwater evaporator 9 to cool down the backwater of engine cooling water, cooling water can be reclaimed simultaneously reclaiming motor exhaust used heat
Heat, and energy-saving effect is obvious；Screen formula-spiral heat exchange tube that a kind of suitable tail gas heat exchange is used is redesigned, both just
In cleaning, heat exchange efficiency is added again；Pass through recovering energy part for driving back pressure by inverter and frequency converter 15
Blower fan 14, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure are adjusted, is driven realizing without extraneous power supply
By backpressure regulation and energy regenerating integration while dynamic blower fan, investment and space hold are greatlyd save；It is multistage using high temperature
The intergrade of turbo-expander 7 is drawn gas, and drawing gas for this part is expanded by one section in high temperature multistage expansion turbine 7
Journey, is heated into the medium R245fa before low temperature multistage expanding machine 8 using its remaining heat, on the one hand can ensured
R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, so as to improve
The whole efficiency of energy recycle device；It is same by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7
Axle is connected, and at the initial stage started in system, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop exchanges heat back prior to high temperature
Water in road reaches vapourizing temperature, and low temperature multistage expanding machine starts first, while driving high temperature multistage turbine by shaft coupling 19
The low speed of expanding machine 7 is rotated in advance, can so effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shortens the startup time,
When system stops, the coasting operation first of high temperature multistage expansion turbine 7 is slowed down, while driving low temperature multistage to expand by shaft coupling 19
Machine 8 slows down, to reduce the idling time of cryogenic expansion machine 8, because the medium temperature in stopped process in expanding machine is also higher,
The air blast friction for reducing low temperature multistage expanding machine 8 is now primarily served, the effect for preventing blade from overheating；According to different flow works
The consideration of inlet valve control characteristic and restriction loss under condition, devises the control mode that a kind of rotating speed and inlet valve are combined,
The stability of regulation is maintained while reducing restriction loss.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are tail
The 3/4 of gas discharge duct overall length, high temperature multistage expansion turbine 7 is 3 grades of expanding machines, and intergrade, which is drawn gas, is derived from high temperature multistage turbine
The 2nd grade of expanding machine 7, heat recovery efficiency improves 4%, achieves unexpected effect.
Embodiment 2：
A kind of tail gas recycle type harvesting device as shown in Figure 1, including harvesting wheel 24, cutter 25, induced-draught fan 26, conveying
Pipe 27, storaging bucket 28, scraper bowl 29 and engine power retracting device, the harvesting wheel 24 are arranged on the front end of scraper bowl 29, cutting
Knife 25 is arranged on the lower section of harvesting wheel 24, and induced-draught fan 26 is arranged on the bottom of harvesting device；Agriculture thing is in harvesting wheel 24 and cutter
It is incorporated into the presence of 25 in scraper bowl 29, negative-pressure sucking is formed by scraper bowl 29 in harvesting device when induced-draught fan 26 is operated
Agriculture material is transported in storaging bucket 28 by delivery pipe 27；The harvesting device is driven by engine 2.
As shown in Fig. 2 engine power retracting device is used for the energy for reclaiming motor exhaust, it includes radiator 1, hair
Motivation 2, backwater evaporator 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, batteries 13, inverter and frequency converter 15 and back pressure
Adjust blower fan 14.Radiator 1 is connected with engine 2, and the heat of engine 2 is transferred to radiator 1 by radiator 1 by cooling water
On, and pass through the surface radiating of radiator 1.The tail gas of engine 2 sequentially pass through backpressure regulation blower fan 14, high-temperature evaporator 5,
Cryogenic vaporizer 6 discharges air after cooling down.
High temperature heat-exchanging loop includes high temperature circulation pump 10, high-temperature evaporator 5, the high temperature multistage expansion turbine being sequentially connected
7 and warm condenser 3, the medium of flowing is water in high temperature heat-exchanging loop, and high-temperature evaporator 5 is arranged on after backpressure regulation blower fan 14
High-temperature tail gas pipeline on, the WATER AS FLOW MEDIUM cooled down through warm condenser 3 is squeezed into by high temperature circulation pump 10 and is used in high-temperature evaporator 5
The tail gas of cooling down high-temperature tail gas section, the WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and done work, heat energy is changed
For the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop include be sequentially connected low-temperature circulating pump 11, cryogenic vaporizer 6, intermediate extraction superheater 12,
The medium flowed in low temperature multistage expanding machine 8 and low-temperature condenser 4, low-temperature heat exchange loop is R245fa, and cryogenic vaporizer 6 is installed
Further to reclaim the heat of tail gas on the low temperature exhaust gas pipeline after high-temperature evaporator 5, cooled down through low-temperature condenser 6
Medium R245fa is squeezed into cryogenic vaporizer 6 by low-temperature circulating pump 11, and the WATER AS FLOW MEDIUM after heating passes through intermediate extraction superheater 12
Done work afterwards by low temperature multiple expansion engine 8, convert heat energy into the mechanical energy of low temperature multistage expanding machine 8.Inventor sends out through research
It is existing, in energy recycle device, with water as medium and with R245fa is as the effect of both media and differs, the evaporation of water
Evaporating temperature of the temperature than R245fa is higher by much, therefore is adapted to use in the tail gas section of high temperature；And in the tail gas of low temperature
R245fa is used in section as medium, its evaporation acting is more beneficial for.In addition, this will under the conditions of different pressure and temperatures
Both media are used in combination, and the heat exchange efficiency of system can be also improved on the whole.Intermediate extraction superheater 12 is pipe type heat transfer
Device, intergrade of the heat source from high temperature multistage expansion turbine 7 is drawn gas, and this part is drawn gas in high temperature multistage turbine
By one section of expansion process in expanding machine 7, heated using its remaining heat into the medium before low temperature multistage expanding machine 8
R245fa, on the one hand can ensure R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop,
Cold source energy is avoided, so as to improve the whole efficiency of energy recycle device.Specifically drawing gas series can be according to two expanding machine
In different condition ranges determine.Also include regulating valve 16, regulating valve 16 is according to the R245fa after intermediate extraction superheater 12
Pressure feedback in temperature feedback and high temperature multistage expansion turbine 7, for adjusting the flow that intergrade is drawn gas, works as intermediate extraction
R245fa temperature feedbacks value after superheater 12 is more than or less than the R245fa temperature after the intermediate extraction superheater 12 of setting
During value, the aperture of big regulating valve 16 is turned down or opens automatically, while when the pressure feedback value in high temperature multistage expansion turbine 7 is small
When pressure atresia value in the high temperature multistage expansion turbine 7 of setting, automatic blocking regulating valve 16 is opened (forbids it to continue greatly
Open big), to prevent exerting oneself for high temperature multistage expansion turbine 7 too low, the R245fa temperature after the intermediate extraction superheater 12 of setting
The method that pressure atresia value in angle value and the high temperature multistage expansion turbine 7 of setting passes through experiment according to different concrete conditions
It is manually set, the intergrade after heating, which is drawn gas, is back to high temperature recuperated cycle loop (not shown).In this embodiment, take
The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 2/3 of exhaust pipe road overall length, high temperature multistage expansion turbine
7 be 4 grades of expanding machines, and intergrade, which is drawn gas, is derived from the 2nd grade of high temperature multistage expansion turbine.
As shown in Figure 3,4, it is contemplated that more how long impurity in tail gas, which is not easy to clear up after use, easily blocks,
And heat exchange efficiency is taken into account, high-temperature evaporator 5 and cryogenic vaporizer 6 use the new structure of screen formula-spiral heat exchange tube,
The inlet side of tail gas, using the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked in screen formula and changed
On heat pipe 17, during cleaning easily, while being staggered in arrangement also can effectively reduce the flow resistance of tail gas；And use spiral shell in the second half section
Heat exchanger tube 18 is revolved, heat exchange efficiency is improved to strengthen flow perturbation.The cooling source of warm condenser 3 and low-temperature condenser 4 can take
From air-conditioning refrigerant, other low-temperature receivers can also be derived from, because the after-heat of this part is few, as long as can meet to change
Medium in hot loop, which is re-cooled to liquid, prevents high temperature circulation pump 10 and low-temperature circulating pump 11 from vaporizing.The high temperature steams
Hair device 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange housing of drum type brake, and heat exchange housing is led to by procapsid 20 and back casing 21
Cross bolt 22 and fasten and form, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, the length of back casing 21 and
The horizontal length of spiral heat exchange tube 18 is identical；Multiple vibrator (not shown)s are provided with the screen formula heat exchanger tube 17, are shaken
Device is made to be powered by batteries 13；The bottom of the procapsid 20 is curved, the row of being additionally provided with the minimum point of curved bottom
Dirty mouth 23, for periodically discharging the dirt for shaking to fall on screen formula heat exchanger tube 17.
Backwater evaporator 9 is additionally provided with the CWR road of engine 2 to radiator 1, is started for reclaiming
The heat of machine cooling water backwater, its cooling source is derived from the centre tap of low-temperature circulating pump 11, it is heated after centre tap come out
R245fa return to the porch of intermediate extraction superheater 12.The centre tap of the relatively low low-temperature circulating pump 11 of pressure is led to
Backwater evaporator cools down the backwater of engine cooling water, and the heat of cooling water backwater on the one hand can be reclaimed well, on the other hand
Have more preferably compared to individually setting up a circulation or drawing cooling medium from the outlet of low-temperature circulating pump 11 and high temperature circulation pump 10
Energy-saving effect.
It is coaxially connected by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7, opened in system
At dynamic initial stage, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop reaches vapour prior to the water in high temperature heat-exchanging loop
Change temperature, low temperature multistage expanding machine 8 starts first, while driving high temperature 7 low speed of multistage expansion turbine pre- by shaft coupling 19
Rotate, can so effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, due to now high temperature
Medium temperature in multistage expansion turbine 7 is very low, and high temperature multistage expansion turbine 7 length of blade compared with low temperature multiple expansion
The length of blade of machine 8 is small, the air blast friction very little of blade, almost can be without considering；When system stops, high temperature multistage turbine
The coasting operation first of expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce cryogenic expansion machine 8
Idling time, because the medium temperature in stopped process in expanding machine is also higher, now primarily serve reduction low temperature multistage
The air blast friction of expanding machine 8, the effect for preventing blade from overheating.
One end of high temperature multistage expansion turbine 7 is connected with batteries 13, and batteries 13 are used to store by expanding machine
The electric energy that kinetic energy is transformed.The technology of the electric energy of battery is converted energy on expanding machine, due to prior art
It is very ripe, it will not be repeated here.Batteries 13 are connected with inverter and frequency converter 15, and inverter is used for the direct current of battery
Electric inversion is alternating current, and frequency converter is used to drive backpressure regulation blower fan 14 and adjusts its rotating speed.Energy recycle device is to engine 2
Influence can raise the exhaust back pressure of engine 2 when essentially consisting in engine exhaust by heater in system, and be vented
Power consumption increase when back pressure rise can cause the engine piston waste gas is released to cylinder, therefore set backpressure regulation blower fan 14 can be with
Effectively lower and control the back pressure of engine 2, during operation, feed back to adjust backpressure regulation wind by the pressure at expulsion detected
The rotating speed of machine 14 is so as to adjust back pressure in optimum value, while this drive the side of blower fan using the energy of of batteries 13 itself
Formula has the advantages that not needing external power supply.
Low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 pass through high temperature inlet valve and low temperature air inlet valve (figure respectively
Not shown in) adjust respective throttle flow.The high temperature inlet valve that uses and the stability of flow area of low temperature air inlet valve for 30%~
100% metered flow, either low-temperature heat exchange loop or high temperature heat-exchanging loop, the control of pump and the control of expanding machine, first
The flow of working medium is adjusted by pump, the control to working medium temperature at expander inlet is realized, is expanded when flow changes
Machine must make corresponding adjustment to match flow, if the operation of expanding machine is mismatched with flow, can not only remain stable
Evaporating pressure, the operation of expanding machine can not also keep stable, while according to the characteristic of high temperature inlet valve and low temperature inlet valve, adopting
Adjusted with pressure and speed adjusts the control mode being engaged：When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are more than
During 30% respective metered flow, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, by adjusting high temperature
The rotating speed of circulating pump 10 or low-temperature circulating pump 11 changes exerting oneself for expanding machine；When high temperature heat-exchanging loop or low-temperature heat exchange loop
When circular flow is less than 30% respective metered flow, the control characteristic of inlet valve during due to low discharge is unstable, keeps high temperature
Circulating pump 10 or the rotating speed of low-temperature circulating pump 11 are constant, and expansion is adjusted by controlling the aperture of high temperature inlet valve or low temperature inlet valve
Machine is exerted oneself.
It is simple and practical in the harvesting device of this embodiment, it can realize that the automatic harvesting storage of agriculture thing is easy to operate,
And engine exhaust energy secondary can be utilized, energy-conserving and environment-protective；The exhaust gas recovery system of engine is devised, according to different temperatures section
Heat recovery demand and medium evaporating temperature and the difference of heat transfer characteristic, followed in high temperature section and low-temperature zone using different
Ring medium, so as to improve the heat exchange efficiency of system on the whole；By the way that the relatively low low-temperature circulating pump centre tap of pressure is drawn
Go out to backwater evaporator 9 to cool down the backwater of engine cooling water, cooling water can be reclaimed simultaneously reclaiming motor exhaust used heat
Heat, and energy-saving effect is obvious；Screen formula-spiral heat exchange tube that a kind of suitable tail gas heat exchange is used is redesigned, both just
In cleaning, heat exchange efficiency is added again；Pass through recovering energy part for driving back pressure by inverter and frequency converter 15
Blower fan 14, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure are adjusted, is driven realizing without extraneous power supply
By backpressure regulation and energy regenerating integration while dynamic blower fan, investment and space hold are greatlyd save；It is multistage using high temperature
The intergrade of turbo-expander 7 is drawn gas, and drawing gas for this part is expanded by one section in high temperature multistage expansion turbine 7
Journey, is heated into the medium R245fa before low temperature multistage expanding machine 8 using its remaining heat, on the one hand can ensured
R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, so as to improve
The whole efficiency of energy recycle device；It is same by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7
Axle is connected, and at the initial stage started in system, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop exchanges heat back prior to high temperature
Water in road reaches vapourizing temperature, and low temperature multistage expanding machine starts first, while driving high temperature multistage turbine by shaft coupling 19
The low speed of expanding machine 7 is rotated in advance, can so effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shortens the startup time,
When system stops, the coasting operation first of high temperature multistage expansion turbine 7 is slowed down, while driving low temperature multistage to expand by shaft coupling 19
Machine 8 slows down, to reduce the idling time of cryogenic expansion machine 8, because the medium temperature in stopped process in expanding machine is also higher,
The air blast friction for reducing low temperature multistage expanding machine 8 is now primarily served, the effect for preventing blade from overheating；According to different flow works
The consideration of inlet valve control characteristic and restriction loss under condition, devises the control mode that a kind of rotating speed and inlet valve are combined,
The stability of regulation is maintained while reducing restriction loss.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are tail
The 2/3 of gas discharge duct overall length, high temperature multistage expansion turbine 7 is 4 grades of expanding machines, and intergrade, which is drawn gas, is derived from high temperature multistage turbine
The 2nd grade of expanding machine 7, heat recovery efficiency improves 4.5%, achieves unexpected effect.
Embodiment 3：
A kind of tail gas recycle type harvesting device as shown in Figure 1, including harvesting wheel 24, cutter 25, induced-draught fan 26, conveying
Pipe 27, storaging bucket 28, scraper bowl 29 and engine power retracting device, the harvesting wheel 24 are arranged on the front end of scraper bowl 29, cutting
Knife 25 is arranged on the lower section of harvesting wheel 24, and induced-draught fan 26 is arranged on the bottom of harvesting device；Agriculture thing is in harvesting wheel 24 and cutter
It is incorporated into the presence of 25 in scraper bowl 29, negative-pressure sucking is formed by scraper bowl 29 in harvesting device when induced-draught fan 26 is operated
Agriculture material is transported in storaging bucket 28 by delivery pipe 27；The harvesting device is driven by engine 2.
As shown in Fig. 2 engine power retracting device is used for the energy for reclaiming motor exhaust, it includes radiator 1, hair
Motivation 2, backwater evaporator 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, batteries 13, inverter and frequency converter 15 and back pressure
Adjust blower fan 14.Radiator 1 is connected with engine 2, and the heat of engine 2 is transferred to radiator 1 by radiator 1 by cooling water
On, and pass through the surface radiating of radiator 1.The tail gas of engine 2 sequentially pass through backpressure regulation blower fan 14, high-temperature evaporator 5,
Cryogenic vaporizer 6 discharges air after cooling down.
High temperature heat-exchanging loop includes high temperature circulation pump 10, high-temperature evaporator 5, the high temperature multistage expansion turbine being sequentially connected
7 and warm condenser 3, the medium of flowing is water in high temperature heat-exchanging loop, and high-temperature evaporator 5 is arranged on after backpressure regulation blower fan 14
High-temperature tail gas pipeline on, the WATER AS FLOW MEDIUM cooled down through warm condenser 3 is squeezed into by high temperature circulation pump 10 and is used in high-temperature evaporator 5
The tail gas of cooling down high-temperature tail gas section, the WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and done work, heat energy is changed
For the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop include be sequentially connected low-temperature circulating pump 11, cryogenic vaporizer 6, intermediate extraction superheater 12,
The medium flowed in low temperature multistage expanding machine 8 and low-temperature condenser 4, low-temperature heat exchange loop is R245fa, and cryogenic vaporizer 6 is installed
Further to reclaim the heat of tail gas on the low temperature exhaust gas pipeline after high-temperature evaporator 5, cooled down through low-temperature condenser 6
Medium R245fa is squeezed into cryogenic vaporizer 6 by low-temperature circulating pump 11, and the WATER AS FLOW MEDIUM after heating passes through intermediate extraction superheater 12
Done work afterwards by low temperature multiple expansion engine 8, convert heat energy into the mechanical energy of low temperature multistage expanding machine 8.Inventor sends out through research
It is existing, in energy recycle device, with water as medium and with R245fa is as the effect of both media and differs, the evaporation of water
Evaporating temperature of the temperature than R245fa is higher by much, therefore is adapted to use in the tail gas section of high temperature；And in the tail gas of low temperature
R245fa is used in section as medium, its evaporation acting is more beneficial for.In addition, this will under the conditions of different pressure and temperatures
Both media are used in combination, and the heat exchange efficiency of system can be also improved on the whole.Intermediate extraction superheater 12 is pipe type heat transfer
Device, intergrade of the heat source from high temperature multistage expansion turbine 7 is drawn gas, and this part is drawn gas in high temperature multistage turbine
By one section of expansion process in expanding machine 7, heated using its remaining heat into the medium before low temperature multistage expanding machine 8
R245fa, on the one hand can ensure R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop,
Cold source energy is avoided, so as to improve the whole efficiency of energy recycle device.Specifically drawing gas series can be according to two expanding machine
In different condition ranges determine.Also include regulating valve 16, regulating valve 16 is according to the R245fa after intermediate extraction superheater 12
Pressure feedback in temperature feedback and high temperature multistage expansion turbine 7, for adjusting the flow that intergrade is drawn gas, works as intermediate extraction
R245fa temperature feedbacks value after superheater 12 is more than or less than the R245fa temperature after the intermediate extraction superheater 12 of setting
During value, the aperture of big regulating valve 16 is turned down or opens automatically, while when the pressure feedback value in high temperature multistage expansion turbine 7 is small
When pressure atresia value in the high temperature multistage expansion turbine 7 of setting, automatic blocking regulating valve 16 is opened (forbids it to continue greatly
Open big), to prevent exerting oneself for high temperature multistage expansion turbine 7 too low, the R245fa temperature after the intermediate extraction superheater 12 of setting
The method that pressure atresia value in angle value and the high temperature multistage expansion turbine 7 of setting passes through experiment according to different concrete conditions
It is manually set, the intergrade after heating, which is drawn gas, is back to high temperature recuperated cycle loop (not shown).In this embodiment, take
The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 1/2 of exhaust pipe road overall length, high temperature multistage expansion turbine
7 be 5 grades of expanding machines, and intergrade, which is drawn gas, is derived from the 3rd level of high temperature multistage expansion turbine.
As shown in Figure 3,4, it is contemplated that more how long impurity in tail gas, which is not easy to clear up after use, easily blocks,
And heat exchange efficiency is taken into account, high-temperature evaporator 5 and cryogenic vaporizer 6 use the new structure of screen formula-spiral heat exchange tube,
The inlet side of tail gas, using the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked in screen formula and changed
On heat pipe 17, during cleaning easily, while being staggered in arrangement also can effectively reduce the flow resistance of tail gas；And use spiral shell in the second half section
Heat exchanger tube 18 is revolved, heat exchange efficiency is improved to strengthen flow perturbation.The cooling source of warm condenser 3 and low-temperature condenser 4 can take
From air-conditioning refrigerant, other low-temperature receivers can also be derived from, because the after-heat of this part is few, as long as can meet to change
Medium in hot loop, which is re-cooled to liquid, prevents high temperature circulation pump 10 and low-temperature circulating pump 11 from vaporizing.The high temperature steams
Hair device 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange housing of drum type brake, and heat exchange housing is led to by procapsid 20 and back casing 21
Cross bolt 22 and fasten and form, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, the length of back casing 21 and
The horizontal length of spiral heat exchange tube 18 is identical；Multiple vibrator (not shown)s are provided with the screen formula heat exchanger tube 17, are shaken
Device is made to be powered by batteries 13；The bottom of the procapsid 20 is curved, the row of being additionally provided with the minimum point of curved bottom
Dirty mouth 23, for periodically discharging the dirt for shaking to fall on screen formula heat exchanger tube 17.
Backwater evaporator 9 is additionally provided with the CWR road of engine 2 to radiator 1, is started for reclaiming
The heat of machine cooling water backwater, its cooling source is derived from the centre tap of low-temperature circulating pump 11, it is heated after centre tap come out
R245fa return to the porch of intermediate extraction superheater 12.The centre tap of the relatively low low-temperature circulating pump 11 of pressure is led to
Backwater evaporator cools down the backwater of engine cooling water, and the heat of cooling water backwater on the one hand can be reclaimed well, on the other hand
Have more preferably compared to individually setting up a circulation or drawing cooling medium from the outlet of low-temperature circulating pump 11 and high temperature circulation pump 10
Energy-saving effect.
It is coaxially connected by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7, opened in system
At dynamic initial stage, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop reaches vapour prior to the water in high temperature heat-exchanging loop
Change temperature, low temperature multistage expanding machine 8 starts first, while driving high temperature 7 low speed of multistage expansion turbine pre- by shaft coupling 19
Rotate, can so effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, due to now high temperature
Medium temperature in multistage expansion turbine 7 is very low, and high temperature multistage expansion turbine 7 length of blade compared with low temperature multiple expansion
The length of blade of machine 8 is small, the air blast friction very little of blade, almost can be without considering；When system stops, high temperature multistage turbine
The coasting operation first of expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce cryogenic expansion machine 8
Idling time, because the medium temperature in stopped process in expanding machine is also higher, now primarily serve reduction low temperature multistage
The air blast friction of expanding machine 8, the effect for preventing blade from overheating.
One end of high temperature multistage expansion turbine 7 is connected with batteries 13, and batteries 13 are used to store by expanding machine
The electric energy that kinetic energy is transformed.The technology of the electric energy of battery is converted energy on expanding machine, due to prior art
It is very ripe, it will not be repeated here.Batteries 13 are connected with inverter and frequency converter 15, and inverter is used for the direct current of battery
Electric inversion is alternating current, and frequency converter is used to drive backpressure regulation blower fan 14 and adjusts its rotating speed.Energy recycle device is to engine 2
Influence can raise the exhaust back pressure of engine 2 when essentially consisting in engine exhaust by heater in system, and be vented
Power consumption increase when back pressure rise can cause the engine piston waste gas is released to cylinder, therefore set backpressure regulation blower fan 14 can be with
Effectively lower and control the back pressure of engine 2, during operation, feed back to adjust backpressure regulation wind by the pressure at expulsion detected
The rotating speed of machine 14 is so as to adjust back pressure in optimum value, while this drive the side of blower fan using the energy of of batteries 13 itself
Formula has the advantages that not needing external power supply.
Low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 pass through high temperature inlet valve and low temperature air inlet valve (figure respectively
Not shown in) adjust respective throttle flow.The high temperature inlet valve that uses and the stability of flow area of low temperature air inlet valve for 30%~
100% metered flow, either low-temperature heat exchange loop or high temperature heat-exchanging loop, the control of pump and the control of expanding machine, first
The flow of working medium is adjusted by pump, the control to working medium temperature at expander inlet is realized, is expanded when flow changes
Machine must make corresponding adjustment to match flow, if the operation of expanding machine is mismatched with flow, can not only remain stable
Evaporating pressure, the operation of expanding machine can not also keep stable, while according to the characteristic of high temperature inlet valve and low temperature inlet valve, adopting
Adjusted with pressure and speed adjusts the control mode being engaged：When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are more than
During 30% respective metered flow, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, by adjusting high temperature
The rotating speed of circulating pump 10 or low-temperature circulating pump 11 changes exerting oneself for expanding machine；When high temperature heat-exchanging loop or low-temperature heat exchange loop
When circular flow is less than 30% respective metered flow, the control characteristic of inlet valve during due to low discharge is unstable, keeps high temperature
Circulating pump 10 or the rotating speed of low-temperature circulating pump 11 are constant, and expansion is adjusted by controlling the aperture of high temperature inlet valve or low temperature inlet valve
Machine is exerted oneself.
It is simple and practical in the harvesting device of this embodiment, it can realize that the automatic harvesting storage of agriculture thing is easy to operate,
And engine exhaust energy secondary can be utilized, energy-conserving and environment-protective；The exhaust gas recovery system of engine is devised, according to different temperatures section
Heat recovery demand and medium evaporating temperature and the difference of heat transfer characteristic, followed in high temperature section and low-temperature zone using different
Ring medium, so as to improve the heat exchange efficiency of system on the whole；By the way that the relatively low low-temperature circulating pump centre tap of pressure is drawn
Go out to backwater evaporator 9 to cool down the backwater of engine cooling water, cooling water can be reclaimed simultaneously reclaiming motor exhaust used heat
Heat, and energy-saving effect is obvious；Screen formula-spiral heat exchange tube that a kind of suitable tail gas heat exchange is used is redesigned, both just
In cleaning, heat exchange efficiency is added again；Pass through recovering energy part for driving back pressure by inverter and frequency converter 15
Blower fan 14, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure are adjusted, is driven realizing without extraneous power supply
By backpressure regulation and energy regenerating integration while dynamic blower fan, investment and space hold are greatlyd save；It is multistage using high temperature
The intergrade of turbo-expander 7 is drawn gas, and drawing gas for this part is expanded by one section in high temperature multistage expansion turbine 7
Journey, is heated into the medium R245fa before low temperature multistage expanding machine 8 using its remaining heat, on the one hand can ensured
R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, so as to improve
The whole efficiency of energy recycle device；It is same by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7
Axle is connected, and at the initial stage started in system, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop exchanges heat back prior to high temperature
Water in road reaches vapourizing temperature, and low temperature multistage expanding machine starts first, while driving high temperature multistage turbine by shaft coupling 19
The low speed of expanding machine 7 is rotated in advance, can so effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shortens the startup time,
When system stops, the coasting operation first of high temperature multistage expansion turbine 7 is slowed down, while driving low temperature multistage to expand by shaft coupling 19
Machine 8 slows down, to reduce the idling time of cryogenic expansion machine 8, because the medium temperature in stopped process in expanding machine is also higher,
The air blast friction for reducing low temperature multistage expanding machine 8 is now primarily served, the effect for preventing blade from overheating；According to different flow works
The consideration of inlet valve control characteristic and restriction loss under condition, devises the control mode that a kind of rotating speed and inlet valve are combined,
The stability of regulation is maintained while reducing restriction loss.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are tail
The 1/2 of gas discharge duct overall length, high temperature multistage expansion turbine 7 is 5 grades of expanding machines, and intergrade, which is drawn gas, is derived from high temperature multistage turbine
The 3rd level of expanding machine 7, heat recovery efficiency improves 5%, achieves unexpected effect.
Embodiment 4：
A kind of tail gas recycle type harvesting device as shown in Figure 1, including harvesting wheel 24, cutter 25, induced-draught fan 26, conveying
Pipe 27, storaging bucket 28, scraper bowl 29 and engine power retracting device, the harvesting wheel 24 are arranged on the front end of scraper bowl 29, cutting
Knife 25 is arranged on the lower section of harvesting wheel 24, and induced-draught fan 26 is arranged on the bottom of harvesting device；Agriculture thing is in harvesting wheel 24 and cutter
It is incorporated into the presence of 25 in scraper bowl 29, negative-pressure sucking is formed by scraper bowl 29 in harvesting device when induced-draught fan 26 is operated
Agriculture material is transported in storaging bucket 28 by delivery pipe 27；The harvesting device is driven by engine 2.
As shown in Fig. 2 engine power retracting device is used for the energy for reclaiming motor exhaust, it includes radiator 1, hair
Motivation 2, backwater evaporator 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, batteries 13, inverter and frequency converter 15 and back pressure
Adjust blower fan 14.Radiator 1 is connected with engine 2, and the heat of engine 2 is transferred to radiator 1 by radiator 1 by cooling water
On, and pass through the surface radiating of radiator 1.The tail gas of engine 2 sequentially pass through backpressure regulation blower fan 14, high-temperature evaporator 5,
Cryogenic vaporizer 6 discharges air after cooling down.
High temperature heat-exchanging loop includes high temperature circulation pump 10, high-temperature evaporator 5, the high temperature multistage expansion turbine being sequentially connected
7 and warm condenser 3, the medium of flowing is water in high temperature heat-exchanging loop, and high-temperature evaporator 5 is arranged on after backpressure regulation blower fan 14
High-temperature tail gas pipeline on, the WATER AS FLOW MEDIUM cooled down through warm condenser 3 is squeezed into by high temperature circulation pump 10 and is used in high-temperature evaporator 5
The tail gas of cooling down high-temperature tail gas section, the WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and done work, heat energy is changed
For the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop include be sequentially connected low-temperature circulating pump 11, cryogenic vaporizer 6, intermediate extraction superheater 12,
The medium flowed in low temperature multistage expanding machine 8 and low-temperature condenser 4, low-temperature heat exchange loop is R245fa, and cryogenic vaporizer 6 is installed
Further to reclaim the heat of tail gas on the low temperature exhaust gas pipeline after high-temperature evaporator 5, cooled down through low-temperature condenser 6
Medium R245fa is squeezed into cryogenic vaporizer 6 by low-temperature circulating pump 11, and the WATER AS FLOW MEDIUM after heating passes through intermediate extraction superheater 12
Done work afterwards by low temperature multiple expansion engine 8, convert heat energy into the mechanical energy of low temperature multistage expanding machine 8.Inventor sends out through research
It is existing, in energy recycle device, with water as medium and with R245fa is as the effect of both media and differs, the evaporation of water
Evaporating temperature of the temperature than R245fa is higher by much, therefore is adapted to use in the tail gas section of high temperature；And in the tail gas of low temperature
R245fa is used in section as medium, its evaporation acting is more beneficial for.In addition, this will under the conditions of different pressure and temperatures
Both media are used in combination, and the heat exchange efficiency of system can be also improved on the whole.Intermediate extraction superheater 12 is pipe type heat transfer
Device, intergrade of the heat source from high temperature multistage expansion turbine 7 is drawn gas, and this part is drawn gas in high temperature multistage turbine
By one section of expansion process in expanding machine 7, heated using its remaining heat into the medium before low temperature multistage expanding machine 8
R245fa, on the one hand can ensure R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop,
Cold source energy is avoided, so as to improve the whole efficiency of energy recycle device.Specifically drawing gas series can be according to two expanding machine
In different condition ranges determine.Also include regulating valve 16, regulating valve 16 is according to the R245fa after intermediate extraction superheater 12
Pressure feedback in temperature feedback and high temperature multistage expansion turbine 7, for adjusting the flow that intergrade is drawn gas, works as intermediate extraction
R245fa temperature feedbacks value after superheater 12 is more than or less than the R245fa temperature after the intermediate extraction superheater 12 of setting
During value, the aperture of big regulating valve 16 is turned down or opens automatically, while when the pressure feedback value in high temperature multistage expansion turbine 7 is small
When pressure atresia value in the high temperature multistage expansion turbine 7 of setting, automatic blocking regulating valve 16 is opened (forbids it to continue greatly
Open big), to prevent exerting oneself for high temperature multistage expansion turbine 7 too low, the R245fa temperature after the intermediate extraction superheater 12 of setting
The method that pressure atresia value in angle value and the high temperature multistage expansion turbine 7 of setting passes through experiment according to different concrete conditions
It is manually set, the intergrade after heating, which is drawn gas, is back to high temperature recuperated cycle loop (not shown).In this embodiment, take
The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 2/5 of exhaust pipe road overall length, high temperature multistage expansion turbine
7 be 5 grades of expanding machines, and intergrade, which is drawn gas, is derived from the 2nd grade of high temperature multistage expansion turbine.
As shown in Figure 3,4, it is contemplated that more how long impurity in tail gas, which is not easy to clear up after use, easily blocks,
And heat exchange efficiency is taken into account, high-temperature evaporator 5 and cryogenic vaporizer 6 use the new structure of screen formula-spiral heat exchange tube,
The inlet side of tail gas, using the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked in screen formula and changed
On heat pipe 17, during cleaning easily, while being staggered in arrangement also can effectively reduce the flow resistance of tail gas；And use spiral shell in the second half section
Heat exchanger tube 18 is revolved, heat exchange efficiency is improved to strengthen flow perturbation.The cooling source of warm condenser 3 and low-temperature condenser 4 can take
From air-conditioning refrigerant, other low-temperature receivers can also be derived from, because the after-heat of this part is few, as long as can meet to change
Medium in hot loop, which is re-cooled to liquid, prevents high temperature circulation pump 10 and low-temperature circulating pump 11 from vaporizing.The high temperature steams
Hair device 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange housing of drum type brake, and heat exchange housing is led to by procapsid 20 and back casing 21
Cross bolt 22 and fasten and form, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, the length of back casing 21 and
The horizontal length of spiral heat exchange tube 18 is identical；Multiple vibrator (not shown)s are provided with the screen formula heat exchanger tube 17, are shaken
Device is made to be powered by batteries 13；The bottom of the procapsid 20 is curved, the row of being additionally provided with the minimum point of curved bottom
Dirty mouth 23, for periodically discharging the dirt for shaking to fall on screen formula heat exchanger tube 17.
Backwater evaporator 9 is additionally provided with the CWR road of engine 2 to radiator 1, is started for reclaiming
The heat of machine cooling water backwater, its cooling source is derived from the centre tap of low-temperature circulating pump 11, it is heated after centre tap come out
R245fa return to the porch of intermediate extraction superheater 12.The centre tap of the relatively low low-temperature circulating pump 11 of pressure is led to
Backwater evaporator cools down the backwater of engine cooling water, and the heat of cooling water backwater on the one hand can be reclaimed well, on the other hand
Have more preferably compared to individually setting up a circulation or drawing cooling medium from the outlet of low-temperature circulating pump 11 and high temperature circulation pump 10
Energy-saving effect.
It is coaxially connected by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7, opened in system
At dynamic initial stage, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop reaches vapour prior to the water in high temperature heat-exchanging loop
Change temperature, low temperature multistage expanding machine 8 starts first, while driving high temperature 7 low speed of multistage expansion turbine pre- by shaft coupling 19
Rotate, can so effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, due to now high temperature
Medium temperature in multistage expansion turbine 7 is very low, and high temperature multistage expansion turbine 7 length of blade compared with low temperature multiple expansion
The length of blade of machine 8 is small, the air blast friction very little of blade, almost can be without considering；When system stops, high temperature multistage turbine
The coasting operation first of expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce cryogenic expansion machine 8
Idling time, because the medium temperature in stopped process in expanding machine is also higher, now primarily serve reduction low temperature multistage
The air blast friction of expanding machine 8, the effect for preventing blade from overheating.
One end of high temperature multistage expansion turbine 7 is connected with batteries 13, and batteries 13 are used to store by expanding machine
The electric energy that kinetic energy is transformed.The technology of the electric energy of battery is converted energy on expanding machine, due to prior art
It is very ripe, it will not be repeated here.Batteries 13 are connected with inverter and frequency converter 15, and inverter is used for the direct current of battery
Electric inversion is alternating current, and frequency converter is used to drive backpressure regulation blower fan 14 and adjusts its rotating speed.Energy recycle device is to engine 2
Influence can raise the exhaust back pressure of engine 2 when essentially consisting in engine exhaust by heater in system, and be vented
Power consumption increase when back pressure rise can cause the engine piston waste gas is released to cylinder, therefore set backpressure regulation blower fan 14 can be with
Effectively lower and control the back pressure of engine 2, during operation, feed back to adjust backpressure regulation wind by the pressure at expulsion detected
The rotating speed of machine 14 is so as to adjust back pressure in optimum value, while this drive the side of blower fan using the energy of of batteries 13 itself
Formula has the advantages that not needing external power supply.
Low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 pass through high temperature inlet valve and low temperature air inlet valve (figure respectively
Not shown in) adjust respective throttle flow.The high temperature inlet valve that uses and the stability of flow area of low temperature air inlet valve for 30%~
100% metered flow, either low-temperature heat exchange loop or high temperature heat-exchanging loop, the control of pump and the control of expanding machine, first
The flow of working medium is adjusted by pump, the control to working medium temperature at expander inlet is realized, is expanded when flow changes
Machine must make corresponding adjustment to match flow, if the operation of expanding machine is mismatched with flow, can not only remain stable
Evaporating pressure, the operation of expanding machine can not also keep stable, while according to the characteristic of high temperature inlet valve and low temperature inlet valve, adopting
Adjusted with pressure and speed adjusts the control mode being engaged：When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are more than
During 30% respective metered flow, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, by adjusting high temperature
The rotating speed of circulating pump 10 or low-temperature circulating pump 11 changes exerting oneself for expanding machine；When high temperature heat-exchanging loop or low-temperature heat exchange loop
When circular flow is less than 30% respective metered flow, the control characteristic of inlet valve during due to low discharge is unstable, keeps high temperature
Circulating pump 10 or the rotating speed of low-temperature circulating pump 11 are constant, and expansion is adjusted by controlling the aperture of high temperature inlet valve or low temperature inlet valve
Machine is exerted oneself.
It is simple and practical in the harvesting device of this embodiment, it can realize that the automatic harvesting storage of agriculture thing is easy to operate,
And engine exhaust energy secondary can be utilized, energy-conserving and environment-protective；The exhaust gas recovery system of engine is devised, according to different temperatures section
Heat recovery demand and medium evaporating temperature and the difference of heat transfer characteristic, followed in high temperature section and low-temperature zone using different
Ring medium, so as to improve the heat exchange efficiency of system on the whole；By the way that the relatively low low-temperature circulating pump centre tap of pressure is drawn
Go out to backwater evaporator 9 to cool down the backwater of engine cooling water, cooling water can be reclaimed simultaneously reclaiming motor exhaust used heat
Heat, and energy-saving effect is obvious；Screen formula-spiral heat exchange tube that a kind of suitable tail gas heat exchange is used is redesigned, both just
In cleaning, heat exchange efficiency is added again；Pass through recovering energy part for driving back pressure by inverter and frequency converter 15
Blower fan 14, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure are adjusted, is driven realizing without extraneous power supply
By backpressure regulation and energy regenerating integration while dynamic blower fan, investment and space hold are greatlyd save；It is multistage using high temperature
The intergrade of turbo-expander 7 is drawn gas, and drawing gas for this part is expanded by one section in high temperature multistage expansion turbine 7
Journey, is heated into the medium R245fa before low temperature multistage expanding machine 8 using its remaining heat, on the one hand can ensured
R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, so as to improve
The whole efficiency of energy recycle device；It is same by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7
Axle is connected, and at the initial stage started in system, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop exchanges heat back prior to high temperature
Water in road reaches vapourizing temperature, and low temperature multistage expanding machine starts first, while driving high temperature multistage turbine by shaft coupling 19
The low speed of expanding machine 7 is rotated in advance, can so effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shortens the startup time,
When system stops, the coasting operation first of high temperature multistage expansion turbine 7 is slowed down, while driving low temperature multistage to expand by shaft coupling 19
Machine 8 slows down, to reduce the idling time of cryogenic expansion machine 8, because the medium temperature in stopped process in expanding machine is also higher,
The air blast friction for reducing low temperature multistage expanding machine 8 is now primarily served, the effect for preventing blade from overheating；According to different flow works
The consideration of inlet valve control characteristic and restriction loss under condition, devises the control mode that a kind of rotating speed and inlet valve are combined,
The stability of regulation is maintained while reducing restriction loss.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are tail
The 2/5 of gas discharge duct overall length, high temperature multistage expansion turbine 7 is 5 grades of expanding machines, and intergrade, which is drawn gas, is derived from high temperature multistage turbine
The 2nd grade of expanding machine 7, heat recovery efficiency improves 5.5%, achieves unexpected effect.
Embodiment 5：
A kind of tail gas recycle type harvesting device as shown in Figure 1, including harvesting wheel 24, cutter 25, induced-draught fan 26, conveying
Pipe 27, storaging bucket 28, scraper bowl 29 and engine power retracting device, the harvesting wheel 24 are arranged on the front end of scraper bowl 29, cutting
Knife 25 is arranged on the lower section of harvesting wheel 24, and induced-draught fan 26 is arranged on the bottom of harvesting device；Agriculture thing is in harvesting wheel 24 and cutter
It is incorporated into the presence of 25 in scraper bowl 29, negative-pressure sucking is formed by scraper bowl 29 in harvesting device when induced-draught fan 26 is operated
Agriculture material is transported in storaging bucket 28 by delivery pipe 27；The harvesting device is driven by engine 2.
As shown in Fig. 2 engine power retracting device is used for the energy for reclaiming motor exhaust, it includes radiator 1, hair
Motivation 2, backwater evaporator 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, batteries 13, inverter and frequency converter 15 and back pressure
Adjust blower fan 14.Radiator 1 is connected with engine 2, and the heat of engine 2 is transferred to radiator 1 by radiator 1 by cooling water
On, and pass through the surface radiating of radiator 1.The tail gas of engine 2 sequentially pass through backpressure regulation blower fan 14, high-temperature evaporator 5,
Cryogenic vaporizer 6 discharges air after cooling down.
High temperature heat-exchanging loop includes high temperature circulation pump 10, high-temperature evaporator 5, the high temperature multistage expansion turbine being sequentially connected
7 and warm condenser 3, the medium of flowing is water in high temperature heat-exchanging loop, and high-temperature evaporator 5 is arranged on after backpressure regulation blower fan 14
High-temperature tail gas pipeline on, the WATER AS FLOW MEDIUM cooled down through warm condenser 3 is squeezed into by high temperature circulation pump 10 and is used in high-temperature evaporator 5
The tail gas of cooling down high-temperature tail gas section, the WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and done work, heat energy is changed
For the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop include be sequentially connected low-temperature circulating pump 11, cryogenic vaporizer 6, intermediate extraction superheater 12,
The medium flowed in low temperature multistage expanding machine 8 and low-temperature condenser 4, low-temperature heat exchange loop is R245fa, and cryogenic vaporizer 6 is installed
Further to reclaim the heat of tail gas on the low temperature exhaust gas pipeline after high-temperature evaporator 5, cooled down through low-temperature condenser 6
Medium R245fa is squeezed into cryogenic vaporizer 6 by low-temperature circulating pump 11, and the WATER AS FLOW MEDIUM after heating passes through intermediate extraction superheater 12
Done work afterwards by low temperature multiple expansion engine 8, convert heat energy into the mechanical energy of low temperature multistage expanding machine 8.Inventor sends out through research
It is existing, in energy recycle device, with water as medium and with R245fa is as the effect of both media and differs, the evaporation of water
Evaporating temperature of the temperature than R245fa is higher by much, therefore is adapted to use in the tail gas section of high temperature；And in the tail gas of low temperature
R245fa is used in section as medium, its evaporation acting is more beneficial for.In addition, this will under the conditions of different pressure and temperatures
Both media are used in combination, and the heat exchange efficiency of system can be also improved on the whole.Intermediate extraction superheater 12 is pipe type heat transfer
Device, intergrade of the heat source from high temperature multistage expansion turbine 7 is drawn gas, and this part is drawn gas in high temperature multistage turbine
By one section of expansion process in expanding machine 7, heated using its remaining heat into the medium before low temperature multistage expanding machine 8
R245fa, on the one hand can ensure R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop,
Cold source energy is avoided, so as to improve the whole efficiency of energy recycle device.Specifically drawing gas series can be according to two expanding machine
In different condition ranges determine.Also include regulating valve 16, regulating valve 16 is according to the R245fa after intermediate extraction superheater 12
Pressure feedback in temperature feedback and high temperature multistage expansion turbine 7, for adjusting the flow that intergrade is drawn gas, works as intermediate extraction
R245fa temperature feedbacks value after superheater 12 is more than or less than the R245fa temperature after the intermediate extraction superheater 12 of setting
During value, the aperture of big regulating valve 16 is turned down or opens automatically, while when the pressure feedback value in high temperature multistage expansion turbine 7 is small
When pressure atresia value in the high temperature multistage expansion turbine 7 of setting, automatic blocking regulating valve 16 is opened (forbids it to continue greatly
Open big), to prevent exerting oneself for high temperature multistage expansion turbine 7 too low, the R245fa temperature after the intermediate extraction superheater 12 of setting
The method that pressure atresia value in angle value and the high temperature multistage expansion turbine 7 of setting passes through experiment according to different concrete conditions
It is manually set, the intergrade after heating, which is drawn gas, is back to high temperature recuperated cycle loop (not shown).In this embodiment, take
The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 2/7 of exhaust pipe road overall length, high temperature multistage expansion turbine
7 be 6 grades of expanding machines, and intergrade, which is drawn gas, is derived from the 3rd level of high temperature multistage expansion turbine.
As shown in Figure 3,4, it is contemplated that more how long impurity in tail gas, which is not easy to clear up after use, easily blocks,
And heat exchange efficiency is taken into account, high-temperature evaporator 5 and cryogenic vaporizer 6 use the new structure of screen formula-spiral heat exchange tube,
The inlet side of tail gas, using the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked in screen formula and changed
On heat pipe 17, during cleaning easily, while being staggered in arrangement also can effectively reduce the flow resistance of tail gas；And use spiral shell in the second half section
Heat exchanger tube 18 is revolved, heat exchange efficiency is improved to strengthen flow perturbation.The cooling source of warm condenser 3 and low-temperature condenser 4 can take
From air-conditioning refrigerant, other low-temperature receivers can also be derived from, because the after-heat of this part is few, as long as can meet to change
Medium in hot loop, which is re-cooled to liquid, prevents high temperature circulation pump 10 and low-temperature circulating pump 11 from vaporizing.The high temperature steams
Hair device 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange housing of drum type brake, and heat exchange housing is led to by procapsid 20 and back casing 21
Cross bolt 22 and fasten and form, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, the length of back casing 21 and
The horizontal length of spiral heat exchange tube 18 is identical；Multiple vibrator (not shown)s are provided with the screen formula heat exchanger tube 17, are shaken
Device is made to be powered by batteries 13；The bottom of the procapsid 20 is curved, the row of being additionally provided with the minimum point of curved bottom
Dirty mouth 23, for periodically discharging the dirt for shaking to fall on screen formula heat exchanger tube 17.
Backwater evaporator 9 is additionally provided with the CWR road of engine 2 to radiator 1, is started for reclaiming
The heat of machine cooling water backwater, its cooling source is derived from the centre tap of low-temperature circulating pump 11, it is heated after centre tap come out
R245fa return to the porch of intermediate extraction superheater 12.The centre tap of the relatively low low-temperature circulating pump 11 of pressure is led to
Backwater evaporator cools down the backwater of engine cooling water, and the heat of cooling water backwater on the one hand can be reclaimed well, on the other hand
Have more preferably compared to individually setting up a circulation or drawing cooling medium from the outlet of low-temperature circulating pump 11 and high temperature circulation pump 10
Energy-saving effect.
It is coaxially connected by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7, opened in system
At dynamic initial stage, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop reaches vapour prior to the water in high temperature heat-exchanging loop
Change temperature, low temperature multistage expanding machine 8 starts first, while driving high temperature 7 low speed of multistage expansion turbine pre- by shaft coupling 19
Rotate, can so effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, due to now high temperature
Medium temperature in multistage expansion turbine 7 is very low, and high temperature multistage expansion turbine 7 length of blade compared with low temperature multiple expansion
The length of blade of machine 8 is small, the air blast friction very little of blade, almost can be without considering；When system stops, high temperature multistage turbine
The coasting operation first of expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce cryogenic expansion machine 8
Idling time, because the medium temperature in stopped process in expanding machine is also higher, now primarily serve reduction low temperature multistage
The air blast friction of expanding machine 8, the effect for preventing blade from overheating.
One end of high temperature multistage expansion turbine 7 is connected with batteries 13, and batteries 13 are used to store by expanding machine
The electric energy that kinetic energy is transformed.The technology of the electric energy of battery is converted energy on expanding machine, due to prior art
It is very ripe, it will not be repeated here.Batteries 13 are connected with inverter and frequency converter 15, and inverter is used for the direct current of battery
Electric inversion is alternating current, and frequency converter is used to drive backpressure regulation blower fan 14 and adjusts its rotating speed.Energy recycle device is to engine 2
Influence can raise the exhaust back pressure of engine 2 when essentially consisting in engine exhaust by heater in system, and be vented
Power consumption increase when back pressure rise can cause the engine piston waste gas is released to cylinder, therefore set backpressure regulation blower fan 14 can be with
Effectively lower and control the back pressure of engine 2, during operation, feed back to adjust backpressure regulation wind by the pressure at expulsion detected
The rotating speed of machine 14 is so as to adjust back pressure in optimum value, while this drive the side of blower fan using the energy of of batteries 13 itself
Formula has the advantages that not needing external power supply.
Low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 pass through high temperature inlet valve and low temperature air inlet valve (figure respectively
Not shown in) adjust respective throttle flow.The high temperature inlet valve that uses and the stability of flow area of low temperature air inlet valve for 30%~
100% metered flow, either low-temperature heat exchange loop or high temperature heat-exchanging loop, the control of pump and the control of expanding machine, first
The flow of working medium is adjusted by pump, the control to working medium temperature at expander inlet is realized, is expanded when flow changes
Machine must make corresponding adjustment to match flow, if the operation of expanding machine is mismatched with flow, can not only remain stable
Evaporating pressure, the operation of expanding machine can not also keep stable, while according to the characteristic of high temperature inlet valve and low temperature inlet valve, adopting
Adjusted with pressure and speed adjusts the control mode being engaged：When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are more than
During 30% respective metered flow, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, by adjusting high temperature
The rotating speed of circulating pump 10 or low-temperature circulating pump 11 changes exerting oneself for expanding machine；When high temperature heat-exchanging loop or low-temperature heat exchange loop
When circular flow is less than 30% respective metered flow, the control characteristic of inlet valve during due to low discharge is unstable, keeps high temperature
Circulating pump 10 or the rotating speed of low-temperature circulating pump 11 are constant, and expansion is adjusted by controlling the aperture of high temperature inlet valve or low temperature inlet valve
Machine is exerted oneself.
It is simple and practical in the harvesting device of this embodiment, it can realize that the automatic harvesting storage of agriculture thing is easy to operate,
And engine exhaust energy secondary can be utilized, energy-conserving and environment-protective；The exhaust gas recovery system of engine is devised, according to different temperatures section
Heat recovery demand and medium evaporating temperature and the difference of heat transfer characteristic, followed in high temperature section and low-temperature zone using different
Ring medium, so as to improve the heat exchange efficiency of system on the whole；By the way that the relatively low low-temperature circulating pump centre tap of pressure is drawn
Go out to backwater evaporator 9 to cool down the backwater of engine cooling water, cooling water can be reclaimed simultaneously reclaiming motor exhaust used heat
Heat, and energy-saving effect is obvious；Screen formula-spiral heat exchange tube that a kind of suitable tail gas heat exchange is used is redesigned, both just
In cleaning, heat exchange efficiency is added again；Pass through recovering energy part for driving back pressure by inverter and frequency converter 15
Blower fan 14, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure are adjusted, is driven realizing without extraneous power supply
By backpressure regulation and energy regenerating integration while dynamic blower fan, investment and space hold are greatlyd save；It is multistage using high temperature
The intergrade of turbo-expander 7 is drawn gas, and drawing gas for this part is expanded by one section in high temperature multistage expansion turbine 7
Journey, is heated into the medium R245fa before low temperature multistage expanding machine 8 using its remaining heat, on the one hand can ensured
R245fa effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, so as to improve
The whole efficiency of energy recycle device；It is same by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7
Axle is connected, and at the initial stage started in system, because exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop exchanges heat back prior to high temperature
Water in road reaches vapourizing temperature, and low temperature multistage expanding machine starts first, while driving high temperature multistage turbine by shaft coupling 19
The low speed of expanding machine 7 is rotated in advance, can so effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shortens the startup time,
When system stops, the coasting operation first of high temperature multistage expansion turbine 7 is slowed down, while driving low temperature multistage to expand by shaft coupling 19
Machine 8 slows down, to reduce the idling time of cryogenic expansion machine 8, because the medium temperature in stopped process in expanding machine is also higher,
The air blast friction for reducing low temperature multistage expanding machine 8 is now primarily served, the effect for preventing blade from overheating；According to different flow works
The consideration of inlet valve control characteristic and restriction loss under condition, devises the control mode that a kind of rotating speed and inlet valve are combined,
The stability of regulation is maintained while reducing restriction loss.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are tail
The 2/7 of gas discharge duct overall length, high temperature multistage expansion turbine 7 is 6 grades of expanding machines, and intergrade, which is drawn gas, is derived from high temperature multistage turbine
The 3rd level of expanding machine 7, heat recovery efficiency improves 6%, achieves unexpected effect.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than to present invention guarantor
The limitation of scope is protected, although being explained with reference to preferred embodiment to the present invention, one of ordinary skill in the art should
Work as understanding, technical scheme can be modified or equivalent substitution, without departing from the reality of technical solution of the present invention
Matter and scope.
Claims (2)
1. a kind of tail gas recycle type harvesting device, it is characterized in that, including harvesting wheel, cutter, induced-draught fan, delivery pipe, storaging bucket,
Scraper bowl and engine power retracting device, the harvesting wheel are arranged on the front end of scraper bowl, and cutter are arranged on the lower section of harvesting wheel,
Induced-draught fan is arranged on the bottom of harvesting device；Agriculture thing is incorporated into scraper bowl in the presence of harvesting wheel and cutter, induced-draught fan
Negative-pressure sucking is formed during operating in harvesting device to be transported to the agriculture material in scraper bowl in storaging bucket by delivery pipe；The harvesting
Device is by engine driving, and engine power retracting device is used for the heat for reclaiming motor exhaust, and it includes radiator, hair
Motivation, backwater evaporator, high temperature heat-exchanging loop, low-temperature heat exchange loop, batteries, inverter and frequency converter, backpressure regulation wind
Machine；The radiator is connected with engine, and the heat of engine is transferred on radiator by radiator by cooling water, and is passed through
The surface radiating of radiator；The tail gas of engine is sequentially passed through after backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer cooling
Drain into air；
High temperature heat-exchanging loop includes high temperature circulation pump, high-temperature evaporator, high temperature multistage expansion turbine and the high temperature being sequentially connected
The medium of flowing is water in condenser, high temperature heat-exchanging loop, and high-temperature evaporator is arranged on the high-temperature tail gas after backpressure regulation blower fan
On pipeline, the WATER AS FLOW MEDIUM cooled down through warm condenser is squeezed into high-temperature evaporator by high temperature circulation pump, the WATER AS FLOW MEDIUM after heating with
Enter the acting of high temperature multistage expansion turbine afterwards；
Low-temperature circulating pump, cryogenic vaporizer, intermediate extraction superheater, the low temperature multistage that low-temperature heat exchange loop includes being sequentially connected are swollen
The medium flowed in swollen machine and low-temperature condenser, low-temperature heat exchange loop is R245fa, and cryogenic vaporizer is arranged on to be steamed by high temperature
Send out on the low temperature exhaust gas pipeline after device；The medium R245fa cooled down through low-temperature condenser squeezes into cryogenic vaporizer by low-temperature circulating pump
Interior, the WATER AS FLOW MEDIUM after heating enters the acting of low temperature multistage expanding machine after the heating of intermediate extraction superheater；Intermediate extraction is overheated
Device is pipe heat exchanger, and intergrade of the heat source from high temperature multistage expansion turbine is drawn gas；Also include regulating valve, the tune
Valve is saved according to the pressure feedback in the R245fa temperature feedbacks and high temperature multistage expansion turbine after intermediate extraction superheater, is used for
The flow that regulation intergrade is drawn gas, R245fa temperature feedbacks value after intermediate extraction superheater is more than or less than in setting
Between draw gas the R245fa temperature values after superheater when, the aperture of big regulating valve is turned down or opens automatically, while when high temperature is multistage thoroughly
When pressure feedback value in flat expanding machine is less than the pressure atresia value in the high temperature multistage expansion turbine of setting, automatic blocking is adjusted
Save valve to open, the intergrade after heating, which is drawn gas, is back to high temperature recuperated cycle loop；Between high-temperature evaporator and cryogenic vaporizer
Apart from 3/4 that L is exhaust pipe road overall length, high temperature multistage expansion turbine is 3 grades of expanding machines, and intergrade, which is drawn gas, is derived from height
The 2nd grade of warm multistage expansion turbine；
High-temperature evaporator and cryogenic vaporizer use screen formula-spiral heat exchange tube, and the front half section in gas inlet side uses wrong
The screen formula heat exchanger tube of arrangement is arranged, the second half section uses spiral heat exchange tube；The engine is on the CWR road of radiator
Backwater evaporator is additionally provided with, the heat for reclaiming engine cooling water backwater, its cooling source is derived from low-temperature circulating pump
Between tap, it is heated after the R245fa that comes out of centre tap return to the porch of intermediate extraction superheater；The high temperature evaporation
Device and cryogenic vaporizer are integrally provided in the heat exchange housing of drum type brake, and heat exchange housing passes through bolt buckle by procapsid and back casing
Conjunction is formed, and the length of procapsid is identical with the horizontal length for shielding formula heat exchanger tube, the length of back casing and the level of spiral heat exchange tube
Length is identical；Multiple vibrators are provided with the screen formula heat exchanger tube, vibrator is powered by batteries；The bottom of the procapsid
Portion is curved, and sewage draining exit is additionally provided with the minimum point of curved bottom, for periodically discharging the dirt for shaking to fall on screen formula heat exchanger tube
Thing；
It is coaxially connected by shaft coupling between low temperature multistage expanding machine and high temperature multistage expansion turbine, in system initial start stage,
R245fa in low-temperature heat exchange loop reaches vapourizing temperature prior to the water in high temperature heat-exchanging loop, and low temperature multistage expanding machine is opened first
It is dynamic, while driving high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling, play reduction high temperature multistage expansion turbine
Startup pressure, shorten the startup time effect；When system stops, the coasting operation first of high temperature multistage expansion turbine is slowed down, together
When drive low temperature multistage expanding machine to slow down by shaft coupling, to reduce the idling time of cryogenic expansion machine, play reduction low temperature many
The air blast friction of level expanding machine, the effect for preventing blade from overheating；
Also include batteries, inverter and frequency converter, one end of high temperature multistage expansion turbine is connected with batteries, electric power storage
Pond group is used to store the electric energy being transformed by the kinetic energy of expanding machine；Batteries are connected with inverter and frequency converter, inverter
For being alternating current by the DC inverter of battery, frequency converter is used to drive backpressure regulation blower fan and adjusts its rotating speed；Back pressure
Regulation blower fan is used for the back pressure for lowering and controlling engine, is fed back and is adjusted to adjust back pressure by the pressure at expulsion detected during operation
The rotating speed of blower fan is saved to adjust back pressure in optimum value.
2. a kind of tail gas recycle type harvesting device according to claim 1, it is characterized in that, the low temperature multistage expanding machine and
High temperature multistage expansion turbine is respectively by high temperature inlet valve and the respective throttle flow of low temperature air inlet valve regulation, and the high temperature of use enters
The stability of flow area of steam valve and low temperature air inlet valve is 30%~100% metered flow, when high temperature heat-exchanging loop or low-temperature heat exchange time
When road circular flow is more than 30% respective metered flow, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid throttling from damaging
Lose, exerting oneself for expanding machine is changed by adjusting the rotating speed of high temperature circulation pump or low-temperature circulating pump；When high temperature heat-exchanging loop or
When low-temperature heat exchange circuit cycle flow is less than 30% respective metered flow, the rotating speed of high temperature circulation pump or low-temperature circulating pump is kept not
Become, exerting oneself for expanding machine is adjusted by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
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| CN201610189011.8A CN105594367B (en) | 2016-03-30 | 2016-03-30 | A kind of tail gas recycle type harvesting device |
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| CN105594367B true CN105594367B (en) | 2017-09-26 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201135046Y (en) * | 2007-10-14 | 2008-10-22 | 王继东 | Combine-harvester corn pressure lifting device |
| CN201369927Y (en) * | 2009-02-24 | 2009-12-30 | 爱华农机研究制造有限公司 | Grain combine harvester |
| CN103758658A (en) * | 2013-12-27 | 2014-04-30 | 天津大学 | Heat recovery system for gradient utilization of two-stage double-circuit internal-combustion engine waste heat |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010104284A (en) * | 2008-10-30 | 2010-05-13 | Iseki & Co Ltd | Combine harvester |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201135046Y (en) * | 2007-10-14 | 2008-10-22 | 王继东 | Combine-harvester corn pressure lifting device |
| CN201369927Y (en) * | 2009-02-24 | 2009-12-30 | 爱华农机研究制造有限公司 | Grain combine harvester |
| CN103758658A (en) * | 2013-12-27 | 2014-04-30 | 天津大学 | Heat recovery system for gradient utilization of two-stage double-circuit internal-combustion engine waste heat |
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Effective date of registration: 20170717 Address after: 510000, Alex Hua Tian International Plaza, No. 175197 Longkou Road, Guangzhou, Guangdong, Tianhe District, room second, floor 2050, Xiyuan Applicant after: Guangdong Zhongnan Human Resources Co., Ltd. Address before: Zhenhai District 315202 Zhejiang city of Ningbo Province Rong Luo Road No. 372 Applicant before: Shi Jianhua |
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Effective date of registration: 20181219 Address after: 221000 Gongkou Village No. 1, Guchen Town, Pizhou City, Xuzhou City, Jiangsu Province Patentee after: Pizhou Hongsheng hydraulic components Co. Ltd. Address before: 510000 Alex Hua Tian 2050, room second, Xiyuan International Plaza, 175197, Longkou Middle Road, Tianhe District, Guangzhou, Guangdong. Patentee before: Guangdong Zhongnan Human Resources Co., Ltd. |
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