CN107461221A - A kind of high-power diesel engine waste heat recovery two-stage screw expander structure - Google Patents
A kind of high-power diesel engine waste heat recovery two-stage screw expander structure Download PDFInfo
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- CN107461221A CN107461221A CN201710700522.6A CN201710700522A CN107461221A CN 107461221 A CN107461221 A CN 107461221A CN 201710700522 A CN201710700522 A CN 201710700522A CN 107461221 A CN107461221 A CN 107461221A
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- level
- rotor
- housing
- heat recovery
- diesel engine
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
- F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F01C1/16—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/04—Lubrication
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention relates to screw expander technical field, specially a kind of high-power diesel engine waste heat recovery two-stage screw expander structure, it can effectively solve the problem that the problem of expansion ratio is small, it includes one-level housing, the one-level male rotor and one-level female rotor of cooperation are installed in the rotor chamber of the one-level housing, the one-level shell one end connects one-level air inlet end cap, it is characterized in that, described one-level housing other end connection secondary shell one end, the two level male rotor and two level female rotor of cooperation are installed in the rotor chamber of the secondary shell, connected between the one-level male rotor and the two level male rotor by shaft coupling, the secondary shell other end connects secondary exhaust end cap.
Description
Technical field
The present invention relates to screw expander technical field, specially a kind of high-power diesel engine waste heat recovery two-stage screw rod
Expanding machine structure.
Background technology
With the protrusion of energy worsening shortages and problem of environmental pollution, energy-saving and emission-reduction receive the concern of common people.Wherein, extensively
The general waste heat recovery applied to diesel engines of industry such as heavy-duty car, motorbus, engineering machinery, ship, generating sets is gradual
It is taken seriously.According to investigation, caused heat true translation is into effective output work after general powerful diesel fuel burning
Part only accounts for 50% or so, and remaining is thermal loss, wherein about 30% heat is taken away by waste gas, temperature is up in blast pipe
400 DEG C or so, this partial heat accounts for the 10% of fuel Tong,-a, and taste is higher, and it is big to recycle potentiality；The cooled water of about 15% heat
Take away, but it only accounts for the 4% of fuel Tong,-a, and taste is relatively low, and it is little to recycle value；Other thermal loss account for 5%.
At present the method for most promising waste gas residual heat recovery be generated electricity using ORC organic rankine cycle systems or
Directly band dynamic load is done work, and the system is made up of evaporator, expanding machine, condenser and working medium pump, as shown in Figure 1.Working medium is in work
After carrying out isentropic Compression in matter pump, the isobaric heating of evaporator is entered, absorbs the heat in the waste gas of diesel engine, and evaporation turns into
The steam of HTHP, constant entropy expansion in expanding machine being entered afterwards, outwardly exporting mechanical work, the steam after expansion enters cold
Condenser, liquid is condensed into cooling medium heat exchange and equipressure, finally reenters in working medium pump the circulation started next time.System
Overall performance includes working medium evaporating pressure, condensing pressure, working medium flow, expansion ratio, system heat recovery efficiency and total heat exchange area
Deng.
Wherein expansion ratio refers to expander inlet and exports the ratio of power pressure, and its size not only affects expanded
The enthalpy drop of journey, and the design selection of system expanding machine is played an important role.In middle-size and small-size system, generally use single-stage
Expanding machine, such as scroll expansion machine, radial-inward-flow turbine formula expanding machine, such expanding machine are generally difficult to realize larger expansion ratio.
The expansion ratio of working medium increases with the increase of evaporating temperature, and amplification has the trend gradually accelerated, but in powerful diesel oil
Machine residual neat recovering system, current technology scheme are also difficult to meet to require.
The content of the invention
In order to solve the above problems, the invention provides a kind of high-power diesel engine waste heat recovery two-stage screw expander
Structure, it can effectively solve the problem that the problem of expansion ratio is small.
Its technical scheme is such：A kind of high-power diesel engine waste heat recovery two-stage screw expander structure, it is wrapped
One-level housing is included, the one-level male rotor and one-level female rotor of cooperation, the one-level are installed in the rotor chamber of the one-level housing
Shell one end connects one-level air inlet end cap, it is characterised in that described one-level housing other end connection secondary shell one end, described two
The two level male rotor and two level female rotor of cooperation, the one-level male rotor and two level sun are installed in the rotor chamber of level housing
Connected between rotor by shaft coupling, the secondary shell other end connects secondary exhaust end cap.
It is further characterized by, and is provided with one-level air inlet end bearing block on the one-level housing, on the secondary shell
Secondary inlet end bearing block is provided with, the one-level air inlet end bearing block is connected with the one-level air inlet end cap, and described two is grading
Gas end bearing block is connected with the one-level housing other end；
Axle envelope seat is installed on the secondary exhaust end cap；
The one-level housing tip is provided with the main oil inlet being vertically arranged, and upper end is provided with the connection master and entered in the one-level housing
The horizontal oil duct of hydraulic fluid port, the second oil duct of connection corresponding with the horizontal oil duct, institute are provided with the secondary inlet end bearing block
State horizontal oil duct and the scalloped recess for connecting the one-level housing gas passage is provided with close to the secondary inlet end bearing block side；
The scalloped recess depth is 0.2-0.3mm.
After structure using the present invention, two-stage screw expander is together in series, one-level male rotor and two level male rotor it
Between connected by shaft coupling, increase effectively expansion ratio, increase the power output of expanding machine, improve system recovering energy and return
Produce effects rate；Further, horizontal oil duct is provided with the fan of connection one-level housing gas passage close to secondary inlet end bearing block side
Connected in star, middle concurrent heating oil spout point is added, for improving the temperature of secondary inlet working medium, that further improves system does function
Power.
Brief description of the drawings
Fig. 1 is typical ORC organic rankine cycle systems figure；
Fig. 2 is single stage screw expanding machine structural representation；
Fig. 3 is main view of the present invention to partial cutaway schematic；
Fig. 4 is the main view of one-level housing in the present invention to schematic diagram；
Fig. 5 is the main view of secondary inlet end bearing block in the present invention to schematic diagram；
Fig. 6 is concurrent heating oil spout point main view among the present invention to partial cutaway schematic；
Fig. 7 is concurrent heating oil spout point part section enlarged diagram among the present invention.
Embodiment
As shown in Fig. 3 to Fig. 7, a kind of high-power diesel engine waste heat recovery two-stage screw expander structure, it includes one
Level housing 3, the one-level male rotor 5 and one-level female rotor 6 of cooperation, one-level housing are installed in the primary rotor chamber 4 of one-level housing 3
3 one end connect one-level air inlet end cap 2 by one-level air inlet end bearing block 1, and the other end of one-level housing 3 passes through secondary inlet end bearing
Seat 7 connects the one end of secondary shell 8, and two level male rotor 10 and the two level that cooperation is provided with the secondary rotor chamber 9 of secondary shell 8 are cloudy
Rotor 11, connected between one-level male rotor 5 and two level male rotor 10 by positive coupling 14, the connection of the other end of secondary shell 8
Secondary exhaust end cap 12, axle envelope seat 13 is installed on secondary exhaust end cap 12.
The top of one-level housing 3 is provided with the main oil inlet 17 being vertically arranged, and upper end is provided with the main oil inlet of connection in one-level housing 3
17 horizontal oil duct 15, the second oil duct 18 of connection corresponding with horizontal oil duct 15, horizontal oil are provided with secondary inlet end bearing block 7
Road 15 is provided with the scalloped recess 16 of the gas passage 19 of connection one-level housing 3, scalloped recess close to the side of secondary inlet end bearing block 7
16th, the plane 3-3 on one-level housing 3, the plane 7-7 on secondary inlet end bearing block 7 collectively constitute middle concurrent heating structure.
When unit works, lubricating oil enters main frame from main oil inlet 17, is shunted by horizontal oil duct 15, the second oil duct 18
To two level main frame, lubricating oil is when by scalloped recess 16, the pressure that is higher than due to the pressure of lubricating oil herein in gas passage 19
Power, so in the presence of pressure difference, spirt gas passage 19 is entered two level main frame, then by lubricating oil together with working gas
Participate in expansion and discharge process.Sector structure can guide the injection direction of lubricating oil, and fan-shaped tail area is big, be advantageous to improve
Heating effect.Meanwhile the depth of scalloped recess 16 is very shallow, stock size 0.2-0.3mm will not be to the profit in the second oil duct 18
Lubricating oil pressure produces big influence.
Shown in Fig. 2 for existing single stage screw expanding machine structural representation.
Claims (5)
1. a kind of high-power diesel engine waste heat recovery two-stage screw expander structure, it includes one-level housing, the one-level shell
The one-level male rotor and one-level female rotor of cooperation are installed, the one-level shell one end connects one-level inlet end in the rotor chamber of body
Lid, it is characterised in that the one-level housing other end connects secondary shell one end, is provided with the rotor chamber of the secondary shell
The two level male rotor and two level female rotor of cooperation, are connected between the one-level male rotor and the two level male rotor by shaft coupling
Connect, the secondary shell other end connects secondary exhaust end cap.
2. a kind of high-power diesel engine waste heat recovery two-stage screw expander structure according to claim 1, its feature
It is, one-level air inlet end bearing block is provided with the one-level housing, secondary inlet end bearing is provided with the secondary shell
Seat, the one-level air inlet end bearing block are connected with the one-level air inlet end cap, the secondary inlet end bearing block and the one-level
The housing other end connects.
3. a kind of high-power diesel engine waste heat recovery two-stage screw expander structure according to claim 1, its feature
It is, axle envelope seat is installed on the secondary exhaust end cap.
4. a kind of high-power diesel engine waste heat recovery two-stage screw expander structure according to claim 1, its feature
It is, the one-level housing tip is provided with the main oil inlet being vertically arranged, and upper end is provided with the connection master in the one-level housing
The horizontal oil duct of oil inlet, the second oil duct of connection corresponding with the horizontal oil duct is provided with the secondary inlet end bearing block,
The horizontal oil duct is provided with the fan-shaped recessed of the connection one-level housing gas passage close to the secondary inlet end bearing block side
Groove.
5. a kind of high-power diesel engine waste heat recovery two-stage screw expander structure according to claim 4, its feature
It is, the scalloped recess depth is 0.2-0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700522.6A CN107461221A (en) | 2017-08-16 | 2017-08-16 | A kind of high-power diesel engine waste heat recovery two-stage screw expander structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700522.6A CN107461221A (en) | 2017-08-16 | 2017-08-16 | A kind of high-power diesel engine waste heat recovery two-stage screw expander structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107461221A true CN107461221A (en) | 2017-12-12 |
Family
ID=60549217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710700522.6A Pending CN107461221A (en) | 2017-08-16 | 2017-08-16 | A kind of high-power diesel engine waste heat recovery two-stage screw expander structure |
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| CN (1) | CN107461221A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1463446A (en) * | 1965-01-13 | 1966-12-23 | Svenska Rotor Maskiner Ab | Screw rotor machine |
| DE2645903A1 (en) * | 1976-10-12 | 1978-04-13 | Albert Wagner | Twin rotary piston two stroke engine - has broad radiused sealing wings in pistons and cylinder housing with compression antechamber |
| EP0042027A1 (en) * | 1980-06-13 | 1981-12-23 | Man Gutehoffnungshütte Gmbh | Soren-rotor expansion engine |
| JPH0988501A (en) * | 1995-09-22 | 1997-03-31 | Hisaka Works Ltd | Screw turbine and binary generating device therewith |
| JP2008175123A (en) * | 2007-01-18 | 2008-07-31 | Yanmar Co Ltd | Rankine cycle power recovery device |
| US20090090486A1 (en) * | 2006-03-16 | 2009-04-09 | Behr Gmbh & Co. Kg | Heat exchanger for a motor vehicle |
| CN101975094A (en) * | 2010-11-08 | 2011-02-16 | 上海维尔泰克螺杆机械有限公司 | Liquid pump of screw expander |
| US20120237382A1 (en) * | 2009-12-14 | 2012-09-20 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Screw expander system |
| US20160281542A1 (en) * | 2015-03-23 | 2016-09-29 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Heat-collecting-type power generation system |
| CN106285785A (en) * | 2016-10-21 | 2017-01-04 | 西安琦通新能源设备有限公司 | The single machine two-stage dilating screw machine that pressure energy of natural gas recycles |
-
2017
- 2017-08-16 CN CN201710700522.6A patent/CN107461221A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1463446A (en) * | 1965-01-13 | 1966-12-23 | Svenska Rotor Maskiner Ab | Screw rotor machine |
| DE2645903A1 (en) * | 1976-10-12 | 1978-04-13 | Albert Wagner | Twin rotary piston two stroke engine - has broad radiused sealing wings in pistons and cylinder housing with compression antechamber |
| EP0042027A1 (en) * | 1980-06-13 | 1981-12-23 | Man Gutehoffnungshütte Gmbh | Soren-rotor expansion engine |
| JPH0988501A (en) * | 1995-09-22 | 1997-03-31 | Hisaka Works Ltd | Screw turbine and binary generating device therewith |
| US20090090486A1 (en) * | 2006-03-16 | 2009-04-09 | Behr Gmbh & Co. Kg | Heat exchanger for a motor vehicle |
| JP2008175123A (en) * | 2007-01-18 | 2008-07-31 | Yanmar Co Ltd | Rankine cycle power recovery device |
| US20120237382A1 (en) * | 2009-12-14 | 2012-09-20 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Screw expander system |
| CN101975094A (en) * | 2010-11-08 | 2011-02-16 | 上海维尔泰克螺杆机械有限公司 | Liquid pump of screw expander |
| US20160281542A1 (en) * | 2015-03-23 | 2016-09-29 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Heat-collecting-type power generation system |
| CN106285785A (en) * | 2016-10-21 | 2017-01-04 | 西安琦通新能源设备有限公司 | The single machine two-stage dilating screw machine that pressure energy of natural gas recycles |
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