CN109237587A - A kind of Low Vacuum Heating System and operation method coupling big temperature difference heat pump - Google Patents
A kind of Low Vacuum Heating System and operation method coupling big temperature difference heat pump Download PDFInfo
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- CN109237587A CN109237587A CN201811065016.5A CN201811065016A CN109237587A CN 109237587 A CN109237587 A CN 109237587A CN 201811065016 A CN201811065016 A CN 201811065016A CN 109237587 A CN109237587 A CN 109237587A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 76
- 230000008878 coupling Effects 0.000 title claims abstract description 19
- 238000010168 coupling process Methods 0.000 title claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 326
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 70
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 239000008400 supply water Substances 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 11
- 238000000605 extraction Methods 0.000 claims description 9
- 238000003303 reheating Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000002427 irreversible effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 241001212038 Arcola Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- 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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
- F01K17/025—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic in combination with at least one gas turbine, e.g. a combustion gas turbine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention relates to a kind of Low Vacuum Heating Systems and operation method for coupling big temperature difference heat pump, belong to cogeneration of heat and power field of energy-saving technology.The present invention includes steam turbine, condenser, cooling tower, heat supply network heat exchanger, hydrophobic heat exchanger and secondary heat exchange station, secondary heat exchange station includes big temperature difference heat pump and water water- to-water heat exchanger, primary net is for successively installing heat supply network heat exchanger on the loop of return pipe, big temperature difference heat pump, water water- to-water heat exchanger, hydrophobic heat exchanger and condenser, and the inlet and outlet of distinct device are provided with valve and bypass, in a net side, hydrophobic heat exchanger and condenser are realized by the switch of valve goes here and there, switching connection in parallel, secondary net side in secondary heat exchange station, big temperature difference heat pump and water water- to-water heat exchanger are realized by the switch of valve goes here and there, switching connection in parallel.The present invention is based on the principles of cascaded utilization of energy, rationally design coupled system, realize and heat to the step temperature rising of hot net water, reduce the irreversible loss of heat transfer process, practice value with higher.
Description
Technical field
The present invention relates to a kind of Low Vacuum Heating Systems and operation method for coupling big temperature difference heat pump, belong to cogeneration of heat and power section
It can technical field.
Background technique
As the country deepens continuously to haze improvement, develops central heating, shut down heat supply arcola and increasingly become political affairs
Mansion and civil common recognition.Development of Urban central heating requires stable heat source, therefore to existing pure condensate unit or heat supply machine
Group carries out heat supply transformation or heat capacity is promoted, and excavates and discharges heat supply potentiality, just at an effective method.Thermoelectricity
After factory's steam turbine is discharged into the steam acting of low pressure (LP) cylinder, condensation heat is formed into condenser, it is total that condensation heat usually accounts for its non-renewable energy
30% or more of input heat, which generally passes through cooling tower or Air-Cooling Island is directly discharged into atmosphere, forms huge cold end damage
It loses.The characteristics of this partial heat be concentrate but grade it is lower, be difficult to find that for a long time it is direct utilize method.In addition,
With national economic and social development, the improvement of the quickening of Development of China's Urbanization and living standards of the people, resident's heat supply increasingly by
Pay attention to, National urban Areas benefiting from central heating have reached 73.9 hundred million square metres within 2016；For the heat demand for meeting resident, how
On the basis of existing heating network, the conveying capacity of pipe network is promoted, then is extremely urgent.
Currently, promoting the effective technological means of pipe network conveying capacity is great temperature difference heat supply technology, existing technical measures master
It to be following two: first is that application No. is a kind of 201110195467.2 patent " utilization heat pump techniques raising central heating pipes
The heating system of net heat capacity ", system are mainly characterized by (1) in the heat exchange station setting absorption type heat pump machine close to heat source
Group heats the secondary network water close to heat source for the waste heat of the primary net return water of water-driven heat pump return water using primary net, is close
The heat user heat supply of heat source；(2) the primary net water to be cooled down after driving heat pump, then conventional heat transfer station is delivered to heat
From the farther away secondary network water of heat source, for from the farther away heat user heat supply of heat source；(3) advanced by secondary network water and primary net return water
Row heat exchange, so that primary net return water temperature reduces, the primary net return water after cooling is re-used as low-temperature heat source and enters absorption heat pump,
The temperature of primary net return water is further decreased, and is sufficiently recycled to realize to the waste heat of primary net return water, is realized big
Temperature difference heat supply.Second is that application No. is the patent of 200810101065.X " a kind of big temperature-difference central heating system ", the master of system
Wanting feature is (1) in heat source side, utilizes the low-temperature circulating water waste heat of steam type absorption heat pump recycling steam power plant, reduction steam power plant
Cold end loss；(2) in secondary net side, hot water absorption heat pump and water water- to-water heat exchanger are to be connected in series, and secondary network is for water temperature
Degree can not be adjusted by changing into the secondary network water flow of hot water absorption heat pump or water water- to-water heat exchanger.
Deficiency existing for both the above technical measures is: (1) absorption type heat pump assembly being arranged at heat source, realizing big
Temperature difference heat supply, and from the farther away heat exchange station of heat source, it just can not effectively use great temperature difference heat supply；(2) steam absorption heat is utilized
The mode of circulating-water in thermal power plant waste heat is received in blowback, and investment is larger, and much higher than the mode of direct Heat Supplying with Low Vacuum, (3) are in secondary network
Side, hot water absorption heat pump and water water- to-water heat exchanger are to be connected in series, and secondary network supply water temperature can not be carried out by adjusting flow
It adjusts.It is innovated present invention is generally directed to above 3 technical deficiencies, innovation and creation are a kind of to couple big temperature difference heat pump
Low Vacuum Heating System and operation method.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide it is a kind of design rationally, performance
Reliably, the Low Vacuum Heating System and operation method for coupling big temperature difference heat pump are realized.
Technical solution used by the present invention solves the above problems is: a kind of Heat Supplying with Low Vacuum system coupling big temperature difference heat pump
System, it is characterised in that: including steam turbine, condenser, cooling tower, heat supply network heat exchanger, hydrophobic heat exchanger and secondary heat exchange station；It is described
Secondary heat exchange station includes big temperature difference heat pump and water water- to-water heat exchanger；The steam drain of the steam turbine is connect with condenser, the condensing
Device is connect by circulating water supply pipe and recirculation return pipe with cooling tower, and is installed respectively on circulating water supply pipe and recirculation return pipe
There are the second valve and third valve, the steam inlet of the heat supply network heat exchanger passes through the heating steam extraction of heating extraction steam pipe and steam turbine
Mouth connection, and the first valve is installed on heating extraction steam pipe, the hydrophobic outlet of the heat supply network heat exchanger passes through the first drain pipe
It is connect with the hydrophobic import of hydrophobic heat exchanger, the hydrophobic outlet of the hydrophobic heat exchanger is connect with the second drain pipe；Once net back
One end of water pipe is connect with the primary net water out of water water- to-water heat exchanger, the other end and the third valve of the primary net return pipe
Circulating water outlet connection, and big temperature difference heat pump and hydrophobic heat exchange are sequentially installed with along water flowing direction on primary net return pipe
Device；One end of primary net water supplying pipe is connect with the primary net water inlet of water water- to-water heat exchanger, the other end of the primary net water supplying pipe
It is connect with the circulating water intake of the second valve, and is sequentially installed with heat supply network heat exchange along water flowing direction on primary net water supplying pipe
Device and big temperature difference heat pump；The secondary network return pipe by secondary network return water A branch pipe and secondary network return water B branch pipe respectively with water water
Heat exchanger is connected with big temperature difference heat pump, and is separately installed with the 17th on secondary network return water A branch pipe and secondary network return water B branch pipe
The secondary network water out of valve and the 18th valve, the water water- to-water heat exchanger passes through secondary network water supply A branch pipe and secondary network water supply B
Branch pipe is connect with the heat supply network water out of the 18th valve and secondary network water supplying pipe respectively, and in secondary network water supply A branch pipe and secondary
The 16th valve and the 19th valve, the secondary network water inlet of the secondary network water supplying pipe are separately installed on net water supply B branch pipe
It is connect with big temperature difference heat pump.
Furthermore, the primary net return water side of the hydrophobic heat exchanger is provided with the bypass of the first return water, and changes hydrophobic
Primary net return water import, primary net backwater outlet and the first return water of hot device bypass and are separately installed with the 8th valve, the 7th valve
Door and the 9th valve；The hydrophobic side of hydrophobic heat exchanger is provided with the first drain by-pass, and in the hydrophobic import of hydrophobic heat exchanger and
The 22nd valve and the 21st valve are separately installed on first drain by-pass.
Furthermore, the primary net return water import of the 7th valve is followed by third bypass of supplying water with the second valve
The connection of ring water inlet, and the 20th valve is installed on third supplies water and bypasses.
Furthermore, the primary net return water side of the big temperature difference heat pump is provided with the bypass of the second return water, and in the big temperature difference
Primary net return water import, primary net backwater outlet and the second return water of heat pump bypass and are separately installed with the 14th valve, the tenth
Three valves and the 15th valve.
Furthermore, the primary net water supply side of the heat supply network heat exchanger is provided with the first water supply bypass, and changes in heat supply network
The primary net of hot device, which supplies water to bypass for water inlet, primary net service water outlet and first, is separately installed with the 4th valve, the 5th valve
Door and the 6th valve.
Furthermore, the primary net water supply side of the big temperature difference heat pump is provided with the second water supply bypass, and in the big temperature difference
The primary net of heat pump, which supplies water to bypass for water inlet, primary net service water outlet and second, is separately installed with the tenth valve, the 11st
Valve and the 12nd valve.
Furthermore, the big temperature difference heat pump is supplied water using primary net as driving heat source, is low with primary net return water
Temperature-heat-source recycles the waste heat of primary net return water, to heat secondary network water, realizes great temperature difference heat supply.
Furthermore, the heat supply network of the heat supply network heat exchanger is hydrophobic after hydrophobic heat exchanger secondary heat exchange, and temperature obtains
It further decreases, the hydrophobic low pressure heat regenerative system that steam turbine is delivered to by the second drain pipe of heat supply network after secondary heat exchange cooling.
The operation method of the Low Vacuum Heating System of the above-mentioned big temperature difference heat pump of coupling is as follows:
In non-heating season, the second valve and third valve are only opened, steam turbine is in the operation of pure condensate operating condition, and recirculated water is in condensing
It is delivered to cooling tower after heating in device to be cooled down, recirculated water after cooling, which is returned again to condenser, to be heated；
At Heating Season initial stage and latter stage, the 6th valve, the 9th valve, the 12nd valve, the 15th valve, the 17th are only opened
Valve and the 19th valve, steam turbine are in the operation of back pressure operating condition；Primary net water is delivered to secondary after being heated in condenser
The water water- to-water heat exchanger of heat exchange station, heats secondary network water, and the secondary network water after then heating is delivered to heat user and is supplied
Heat；
In the Heating Season high and cold phase, the first valve, the 4th valve, the 5th valve, the 7th valve, the 8th valve, the tenth are only opened
Valve, the 11st valve, the 13rd valve, the 14th valve, the 16th valve, the 17th valve and the 22nd valve are dredged
Water- to-water heat exchanger, condenser and heat supply network heat exchanger are to be connected in series, and steam turbine is in the operation of back pressure operating condition, big temperature difference heat pump investment fortune
Row, big temperature difference heat pump and water water- to-water heat exchanger are to be connected in series, and primary net return water carries out primary heating in hydrophobic heat exchanger, are entered back into
Condenser carries out reheating, enters heat supply network heat exchanger later and is heated three times, is delivered to finally by primary net water supplying pipe
Secondary heat exchange station；The driving heat source that primary net supplies water first as big temperature difference heat pump is once cooled down, and Shui Shui is then entered back into
Heat exchanger is cooled down twice, and is entered back into big temperature difference heat pump as low-temperature heat source later and is cooled down three times, finally by primary
Net return pipe is back to steam power plant；The secondary network return water conveyed by secondary network return pipe carries out primary add in water water- to-water heat exchanger first
Heat enters back into big temperature difference heat pump and carries out reheating, is delivered to heat user by secondary network water supplying pipe later and carries out heat supply.
It furthermore, can also be by opening and adjusting the 9th valve and the 21st valve in the Heating Season high and cold phase
Door aperture, and adjust the 8th valve and the 22nd valve aperture, adjust enter hydrophobic heat exchanger in hydrophobic flow and
Primary net circling water flow rate, so that the primary net return water temperature for entering condenser be adjusted；
In the Heating Season high and cold phase, if the temperature of primary net return water is higher than specified value, the 7th valve is closed at this time, opens the 9th valve
Door and the 20th valve, hydrophobic heat exchanger become in parallel with condenser, connect again with heat supply network heat exchanger later, and primary net return water exists
After hydrophobic heat exchanger and condenser carry out primary heating respectively, then enters heat supply network heat exchanger simultaneously and carry out reheating；
In the Heating Season high and cold phase, by opening and adjusting the 17th valve, the 18th valve, the 16th valve and the 19th valve
The aperture of door adjusts the secondary network circling water flow rate for entering big temperature difference heat pump and water water- to-water heat exchanger, thus the temperature to supply water to secondary network
Degree is adjusted；
In the Heating Season high and cold phase, if secondary network supply water temperature needed for heat user is lower than specified value, the 16th valve is closed at this time
Door, opening the 18th valve and the 19th valve, big temperature difference heat pump and water water- to-water heat exchanger becomes being connected in parallel, secondary network return water point
Two-way is heated into big temperature difference heat pump and water water- to-water heat exchanger simultaneously, and the secondary network water after heating passes through secondary after being mixed
Net water supplying pipe is delivered to heat user and carries out heat supply；At this time by adjust the 17th valve and the 18th valve aperture, change into
Enter the secondary network water flow of big temperature difference heat pump and water water- to-water heat exchanger, so that the temperature to supply water to secondary network is adjusted.
Compared with prior art, the present invention having the following advantages that and effect: (1) the present invention has rational design, and structure is simple, property
Can be reliable, big temperature difference heat pump is coupled in Low Vacuum Heating System, reduces engineering initial cost, realizes thermal power plant's low temperature exhaust heat
Effective recycling, while improving the conveying capacity of heating network；(2) present invention by hydrophobic heat exchanger and condenser string, simultaneously
The switching of connection connects, and effectively controls the primary net return water temperature into condenser, improves the heat transfer property of condenser；(3)
The present invention is connect by the big temperature difference heat pump of secondary net side with the switching of water water- to-water heat exchanger series and parallel, is realized to secondary network for water temperature
The adjusting of degree improves the heating quality of heat user；(4) the present invention is based on the principles of cascaded utilization of energy, rationally design coupled systemes
System is realized and is heated to the step temperature rising of primary net water and secondary network water, effectively reduces the irreversible loss of heat transfer process, have
Higher practice value.
Detailed description of the invention
Fig. 1 is the schematic diagram that the Low Vacuum Heating System of big temperature difference heat pump is coupled in the present embodiment.
Low Vacuum Heating System structural schematic diagram when Fig. 2 is Heating Season just latter stage back pressure operating condition operation in the present embodiment.
Fig. 3 is the structural schematic diagram that a net side hydrophobic heat exchanger and condenser are connected in parallel in the present embodiment.
Fig. 4 is the structural schematic diagram that a net side hydrophobic heat exchanger and condenser are connected in series in the present embodiment.
Fig. 5 is the structural schematic diagram that the secondary big temperature difference heat pump of net side and water water- to-water heat exchanger are connected in parallel in the present embodiment.
Fig. 6 is the structural schematic diagram that the secondary big temperature difference heat pump of net side and water water- to-water heat exchanger are connected in series in the present embodiment.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1, the Low Vacuum Heating System of the big temperature difference heat pump of coupling in the present embodiment, it includes: steam turbine 1, coagulates
Vapour device 2, cooling tower 3, heat supply network heat exchanger 4, hydrophobic heat exchanger 5 and secondary heat exchange station 6, secondary heat exchange station 6 include: big temperature difference heat pump
61 and water water- to-water heat exchanger 62；The steam drain of steam turbine 1 is connect with condenser 2, and condenser 3 is by circulating water supply pipe 12 and is recycled back to
Water pipe 13 is connect with cooling tower 3, and is separately installed with the second valve 32 and third in circulating water supply pipe 12 and recirculation return pipe 13
The steam inlet of valve 33, heat supply network heat exchanger 4 is connect by heating extraction steam pipe 11 with the heating extraction opening of steam turbine 1, and is being adopted
First valve 31 is installed, the hydrophobic outlet of heat supply network heat exchanger 4 passes through the first drain pipe 20 and hydrophobic heat exchange on warm extraction steam pipe 11
The hydrophobic import of device 5 connects, and the hydrophobic outlet of hydrophobic heat exchanger 5 is connect with the second drain pipe 21, the hydrophobic side of hydrophobic heat exchanger 5
It is provided with the first drain by-pass 29, and is separately installed in the hydrophobic import of hydrophobic heat exchanger 5 and the first drain by-pass 29
22 valves 52 and the 21st valve 51, one end of primary net return pipe 14 and the primary net water out of water water- to-water heat exchanger 62
Connection, the other end of primary net return pipe 14 are connect with the circulating water outlet of third valve 33, and on primary net return pipe 14
It is sequentially installed with big temperature difference heat pump 61 and hydrophobic heat exchanger 5 along water flowing direction, the primary net return water side of hydrophobic heat exchanger 5 is set
It is equipped with the first return water bypass 15, and by the primary net return water import in hydrophobic heat exchanger 5, primary net backwater outlet and the first return water
The 8th valve 38, the 7th valve 37 and the 9th valve 39, the primary net return water import of the 7th valve 37 are separately installed on road 15
It is connect by third water supply bypass 28 with the circulating water intake of the second valve 32, and supplies water to bypass in third and be equipped with second on 28
Ten valves 50, the primary net return water side of big temperature difference heat pump 61 are provided with the second return water bypass 16, and the one of big temperature difference heat pump 61
The 14th valve 44, the 13rd valve are separately installed in secondary net return water import, primary net backwater outlet and the second return water bypass 16
The 43 and the 15th valve 45 of door, one end of primary net water supplying pipe 17 are connect with the primary net water inlet of water water- to-water heat exchanger 62, once
The other end of net water supplying pipe 17 is connect with the circulating water intake of the second valve 32, and along water flowing on primary net water supplying pipe 17
Direction is sequentially installed with heat supply network heat exchanger 4 and big temperature difference heat pump 61, and the primary net water supply side of heat supply network heat exchanger 4 is provided with the first confession
Water bypass 18, and supply water and bypass on 18 respectively for water inlet, primary net service water outlet and first in the primary net of heat supply network heat exchanger 4
4th valve 34, the 5th valve 35 and the 6th valve 36 are installed, the primary net water supply side of big temperature difference heat pump 61 is provided with second
It supplies water and bypasses 19, and supply water in bypass 19 in the primary net of big temperature difference heat pump 61 for water inlet, primary net service water outlet and second
It is separately installed with the tenth valve 40, the 11st valve 41 and the 12nd valve 42, secondary network return pipe 22 passes through secondary network return water A
Branch pipe 23 and secondary network return water B branch pipe 24 are connect with water water- to-water heat exchanger 62 and big temperature difference heat pump 61 respectively, and in secondary network return water A
The 17th valve 47 and the 18th valve 48, water water- to-water heat exchanger 62 are separately installed on branch pipe 23 and secondary network return water B branch pipe 24
Secondary network water out pass through secondary network water supply A branch pipe 25 and secondary network water supply B branch pipe 26 heat with the 18th valve 48 respectively
Net water out and secondary network water supplying pipe 27 connect, and pacify respectively on secondary network water supply A branch pipe 25 and secondary network water supply B branch pipe 26
Equipped with the 16th valve 46 and the 19th valve 49, the secondary network water inlet of secondary network water supplying pipe 27 and big temperature difference heat pump 61 connect
It connects.
In the present embodiment, big temperature difference heat pump 61 is supplied water using primary net as driving heat source, is low with primary net return water
Temperature-heat-source recycles the waste heat of primary net return water, to heat secondary network water, realizes great temperature difference heat supply.
In the present embodiment, the heat supply network of heat supply network heat exchanger 4 is hydrophobic after 5 secondary heat exchange of hydrophobic heat exchanger, and temperature obtains
It further decreases, the hydrophobic low pressure backheat system that steam turbine 1 is delivered to by the second drain pipe 21 of heat supply network after secondary heat exchange cooling
System.
The operation method of-Fig. 6 referring to fig. 2, the Low Vacuum Heating System of the above-mentioned big temperature difference heat pump of coupling are as follows:
In non-heating season, the second valve 32 and third valve 33 are only opened, steam turbine 1 is in the operation of pure condensate operating condition, recirculated water
It is delivered to cooling tower 3 after heating in condenser 2 to be cooled down, recirculated water after cooling is returned again to condenser 2 and is heated；
At Heating Season initial stage and latter stage, the 6th valve 36, the 9th valve 39, the 12nd valve 42, the 15th valve are only opened
45, the 17th valve 47 and the 19th valve 49, steam turbine 1 are in the operation of back pressure operating condition；Primary net water is added in condenser 2
It is delivered to the water water- to-water heat exchanger 62 at secondary heat exchange station 6 after heat, secondary network water is heated, the secondary network water after then heating is defeated
It send to heat user and carries out heat supply；
In the Heating Season high and cold phase, the first valve 31, the 4th valve 34, the 5th valve 35, the 7th valve 37, the 8th valve are only opened
Door the 38, the tenth valve 40, the 11st valve 41, the 13rd valve 43, the 14th valve 44, the 16th valve 46, the 17th valve
The 47 and the 22nd valve 52 of door, hydrophobic heat exchanger 5, condenser 2 and heat supply network heat exchanger 4 are to be connected in series, and steam turbine 1 is in back
Operating condition operation is pressed, big temperature difference heat pump 61 puts into operation, and big temperature difference heat pump 61 and water water- to-water heat exchanger 62 are to be connected in series, and once nets back
Water carries out primary heating in hydrophobic heat exchanger 5, enters back into condenser 2 and carries out reheating, enters heat supply network heat exchanger 4 later and carries out
It heats three times, is delivered to secondary heat exchange station 6 finally by primary net water supplying pipe 17；Primary net supplies water is used as big temperature difference heat pump first
61 driving heat source is once cooled down, and is then entered back into water water- to-water heat exchanger 62 and is cooled down twice, and is used as low-temperature heat source later
It enters back into big temperature difference heat pump 62 to be cooled down three times, is back to steam power plant finally by primary net return pipe 14；It is returned by secondary network
The secondary network return water that water pipe 22 conveys carries out primary heating in water water- to-water heat exchanger 62 first, enters back into big temperature difference heat pump 61 and carries out two
Secondary heating is delivered to heat user by secondary network water supplying pipe 27 later and carries out heat supply.
It, can also be by opening and adjusting opening for the 9th valve 39 and the 21st valve 51 in the Heating Season high and cold phase
Degree, and the aperture of the 8th valve 38 and the 22nd valve 52 is adjusted, adjust the hydrophobic flow and one entered in hydrophobic heat exchanger 5
Secondary net circling water flow rate, so that the primary net return water temperature for entering condenser 2 be adjusted；
If the temperature of primary net return water is higher than specified value, the 7th valve 37 is closed at this time, opens the 9th valve 39 and the 20th valve
Door 50, hydrophobic heat exchanger 5 becomes in parallel with condenser 2, connects again with heat supply network heat exchanger 4 later, and primary net return water is changed hydrophobic
After hot device 5 and condenser 2 carry out primary heating respectively, then enters heat supply network heat exchanger 4 simultaneously and carry out reheating；
It, can also be by opening and adjusting the 17th valve 47, the 18th valve 48, the 16th valve in the Heating Season high and cold phase
The aperture of 46 and the 19th valve 49 adjusts the secondary network circling water flow rate for entering big temperature difference heat pump 61 and water water- to-water heat exchanger 62, from
And the temperature to supply water to secondary network is adjusted；
If secondary network supply water temperature needed for heat user is lower than specified value, the 16th valve 46 is closed at this time, opens the 18th valve
The 48 and the 19th valve 49 of door, big temperature difference heat pump 61 and water water- to-water heat exchanger 62 become being connected in parallel, and secondary network return water divides two-way same
When enter big temperature difference heat pump 61 and water water- to-water heat exchanger 62 and heated, the secondary network water after heating passes through secondary network after being mixed
Water supplying pipe 27 is delivered to heat user and carries out heat supply；At this time by adjusting the aperture of the 17th valve 47 and the 18th valve 48, change
Become the secondary network water flow for entering big temperature difference heat pump 61 and water water- to-water heat exchanger 62, so that the temperature to supply water to secondary network is adjusted
Section.
In the carrying out practically method of the present embodiment, to flowing through the primary net of each equipment for return water, secondary network for return water
Flow when being adjusted, mainly pass through the opening amount signal of DCS system remote transmission valve, to the aperture of each valve into
Row is adjusted, to realize the adjusting to flow.
In the carrying out practically method of the present embodiment, used to the primary net return water temperature and supply heat that enter condenser 2
When the secondary network supply water temperature at family is adjusted, mainly realized by changing the aperture of valve, concrete measure include: first is that
Change the fluid flow for flowing through each equipment, second is that changing the connection type of system.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology changes and retouches made without departing from the spirit and scope of the invention, should belong to this hair
Bright protection scope.
Claims (10)
1. a kind of Low Vacuum Heating System for coupling big temperature difference heat pump, it is characterised in that: including steam turbine (1), condenser (2),
Cooling tower (3), heat supply network heat exchanger (4), hydrophobic heat exchanger (5) and secondary heat exchange station (6)；The secondary heat exchange station (6) includes big
Temperature difference heat pump (61) and water water- to-water heat exchanger (62)；The steam drain of the steam turbine (1) is connect with condenser (2), the condenser
(3) it is connect by circulating water supply pipe (12) and recirculation return pipe (13) with cooling tower (3), and in circulating water supply pipe (12) and circulation
The second valve (32) and third valve (33), the steam inlet of the heat supply network heat exchanger (4) are separately installed on return pipe (13)
It is connect by heating extraction steam pipe (11) with the heating extraction opening of steam turbine (1), and is equipped with first on heating extraction steam pipe (11)
Valve (31), the hydrophobic outlet of the heat supply network heat exchanger (4) by the first drain pipe (20) and hydrophobic heat exchanger (5) it is hydrophobic into
Mouth connection, the hydrophobic outlet of the hydrophobic heat exchanger (5) is connect with the second drain pipe (21)；One end of primary net return pipe (14)
It is connect with the primary net water out of water water- to-water heat exchanger (62), the other end of the primary net return pipe (14) and third valve (33)
Circulating water outlet connection, and be sequentially installed with big temperature difference heat pump (61) along water flowing direction on primary net return pipe (14)
With hydrophobic heat exchanger (5)；Primary one end of net water supplying pipe (17) is connect with the primary net water inlet of water water- to-water heat exchanger (62), described
The other end of primary net water supplying pipe (17) is connect with the circulating water intake of the second valve (32), and on primary net water supplying pipe (17)
Heat supply network heat exchanger (4) and big temperature difference heat pump (61) are sequentially installed with along water flowing direction；The secondary network return pipe (22) is logical
Cross secondary network return water A branch pipe (23) and secondary network return water B branch pipe (24) respectively with water water- to-water heat exchanger (62) and big temperature difference heat pump
(61) it connects, and is separately installed with the 17th valve on secondary network return water A branch pipe (23) and secondary network return water B branch pipe (24)
(47) and the 18th valve (48), the secondary network water out of the water water- to-water heat exchanger (62) pass through secondary network water supply A branch pipe (25)
It is connect respectively with the heat supply network water out of the 18th valve (48) and secondary network water supplying pipe (27) with secondary network water supply B branch pipe (26),
And the 16th valve (46) and the tenth are separately installed on secondary network water supply A branch pipe (25) and secondary network water supply B branch pipe (26)
Nine valves (49), the secondary network water inlet of the secondary network water supplying pipe (27) are connect with big temperature difference heat pump (61).
2. the Low Vacuum Heating System of the big temperature difference heat pump of coupling according to claim 1, it is characterised in that: described hydrophobic to change
The primary net return water side of hot device (5) be provided with the first return water bypass (15), and the primary net return water of hydrophobic heat exchanger (5) into
Mouthful, be separately installed with the 8th valve (38), the 7th valve (37) and the in primary net backwater outlet and the first return water bypass (15)
Nine valves (39)；The hydrophobic side of hydrophobic heat exchanger (5) is provided with the first drain by-pass (29), and dredging in hydrophobic heat exchanger (5)
The 22nd valve (52) and the 21st valve (51) are separately installed on water inlet and the first drain by-pass (29).
3. the Low Vacuum Heating System of the big temperature difference heat pump of coupling according to claim 2, it is characterised in that: the 7th valve
The primary net return water import of door (37) is connect by third water supply bypass (28) with the circulating water intake of the second valve (32), and
Third, which supplies water to bypass, is equipped with the 20th valve (50) on (28).
4. the Low Vacuum Heating System of the big temperature difference heat pump of coupling according to claim 1, it is characterised in that: the big temperature difference
The primary net return water side of heat pump (61) be provided with the second return water bypass (16), and the primary net return water of big temperature difference heat pump (61) into
The 14th valve (44), the 13rd valve (43) are separately installed in mouth, primary net backwater outlet and the second return water bypass (16)
With the 15th valve (45).
5. the Low Vacuum Heating System of the big temperature difference heat pump of coupling according to claim 1, it is characterised in that: the heat supply network changes
The primary net water supply side of hot device (4) be provided with the first water supply bypass (18), and the primary net of heat supply network heat exchanger (4) supply water into
Mouthful, primary net service water outlet and first supplies water and is separately installed with the 4th valve (34), the 5th valve (35) and the in bypass (18)
Six valves (36).
6. the Low Vacuum Heating System of the big temperature difference heat pump of coupling according to claim 1, it is characterised in that: the big temperature difference
The primary net water supply side of heat pump (61) be provided with the second water supply bypass (19), and the primary net of big temperature difference heat pump (61) supply water into
Mouthful, primary net service water outlet and second supply water bypass (19) on be separately installed with the tenth valve (40), the 11st valve (41) and
12nd valve (42).
7. the Low Vacuum Heating System of the big temperature difference heat pump of coupling according to claim 1, it is characterised in that: the big temperature difference
Heat pump (61) is supplied water using primary net as driving heat source, using primary net return water as low-temperature heat source, recycles the remaining of primary net return water
Heat realizes great temperature difference heat supply to heat secondary network water.
8. the Low Vacuum Heating System of the big temperature difference heat pump of coupling according to claim 1, it is characterised in that: the heat supply network changes
The heat supply network of hot device (4) is hydrophobic, and temperature is further decreased after hydrophobic heat exchanger (5) secondary heat exchange, secondary heat exchange cooling
The hydrophobic low pressure heat regenerative system that steam turbine (1) is delivered to by the second drain pipe (21) of heat supply network afterwards.
9. a kind of Low Vacuum Heating System of the big temperature difference heat pump of coupling as claimed in any one of claims 1-8
Operation method, it is characterised in that: the operation method is as follows:
In non-heating season, the second valve (32) and third valve (33) are only opened, steam turbine (1) is in the operation of pure condensate operating condition,
Recirculated water is delivered to cooling tower (3) after heating in condenser (2) and is cooled down, and recirculated water after cooling is returned again to condenser
(2) it is heated；
At Heating Season initial stage and latter stage, the 6th valve (36), the 9th valve (39), the 12nd valve (42), the tenth are only opened
Five valves (45), the 17th valve (47) and the 19th valve (49), steam turbine (1) are in the operation of back pressure operating condition；Primary net water
It is delivered to the water water- to-water heat exchanger (62) at secondary heat exchange station (6) after being heated in condenser (2), secondary network water is heated,
Then the secondary network water after heating is delivered to heat user and carries out heat supply；
In the Heating Season high and cold phase, the first valve (31), the 4th valve (34), the 5th valve (35), the 7th valve are only opened
(37), the 8th valve (38), the tenth valve (40), the 11st valve (41), the 13rd valve (43), the 14th valve (44),
16th valve (46), the 17th valve (47) and the 22nd valve (52), hydrophobic heat exchanger (5), condenser (2) and heat supply network
Heat exchanger (4) is to be connected in series, and steam turbine (1) is in the operation of back pressure operating condition, and big temperature difference heat pump (61) is put into operation, big temperature difference heat
It pumps (61) and water water- to-water heat exchanger (62) is to be connected in series, primary net return water carries out primary heating in hydrophobic heat exchanger (5), enters back into
Condenser (2) carries out reheating, enters heat supply network heat exchanger (4) later and is heated three times, finally by primary net water supplying pipe
(17) secondary heat exchange station (6) are delivered to；The driving heat source that primary net supplies water first as big temperature difference heat pump (61) is once dropped
Then temperature enters back into water water- to-water heat exchanger (62) and is cooled down twice, enter back into big temperature difference heat pump (62) as low-temperature heat source later
Cooled down three times, is back to steam power plant finally by primary net return pipe (14)；By the two of secondary network return pipe (22) conveying
Secondary net return water carries out primary heating in water water- to-water heat exchanger (62) first, enters back into big temperature difference heat pump (61) and carries out reheating, it
Heat user, which is delivered to, by secondary network water supplying pipe (27) afterwards carries out heat supply.
10. the operation method of the Low Vacuum Heating System of the big temperature difference heat pump of coupling according to claim 9, feature exist
In:
In the Heating Season high and cold phase, by opening and adjusting the aperture of the 9th valve (39) and the 21st valve (51), and adjust
The aperture of the 8th valve (38) and the 22nd valve (52) is saved, the hydrophobic flow and one entered in hydrophobic heat exchanger (5) is adjusted
Secondary net circling water flow rate, so that the primary net return water temperature for entering condenser (2) be adjusted；
In the Heating Season high and cold phase, if the temperature of primary net return water is higher than specified value, the 7th valve (37) is closed at this time, opens the
Nine valves (39) and the 20th valve (50), hydrophobic heat exchanger (5) become in parallel with condenser (2), exchange heat again with heat supply network later
Device (4) series connection, primary net return water is after hydrophobic heat exchanger (5) and condenser (2) carry out primary heating respectively, then enters heat simultaneously
Net heat exchanger (4) carries out reheating；
In the Heating Season high and cold phase, by opening and adjusting the 17th valve (47), the 18th valve (48), the 16th valve
(46) and the aperture of the 19th valve (49), adjusting enter the secondary network return water of big temperature difference heat pump (61) and water water- to-water heat exchanger (62)
Flow, so that the temperature to supply water to secondary network is adjusted；
In the Heating Season high and cold phase, if secondary network supply water temperature needed for heat user is lower than specified value, the 16th valve is closed at this time
Door (46), opening the 18th valve (48) and the 19th valve (49), big temperature difference heat pump (61) and water water- to-water heat exchanger (62) becomes
It is connected in parallel, secondary network return water divides two-way while being heated into big temperature difference heat pump (61) and water water- to-water heat exchanger (62), heats
Secondary network water afterwards is delivered to heat user by secondary network water supplying pipe (27) after being mixed and carries out heat supply；At this time by adjusting the
The aperture of 17 valves (47) and the 18th valve (48) changes and enters the two of big temperature difference heat pump (61) and water water- to-water heat exchanger (62)
Secondary net water flow, so that the temperature to supply water to secondary network is adjusted.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230521A (en) * | 2019-03-12 | 2019-09-13 | 华电电力科学研究院有限公司 | A kind of thermoelectricity unit cuts off low pressure (LP) cylinder into vapour coupling heat pump step heating system and adjusting method |
| CN110274291A (en) * | 2019-05-28 | 2019-09-24 | 华电电力科学研究院有限公司 | The online Water quality processing system of hot net water of one kind and its operation method |
| CN110715347A (en) * | 2019-10-30 | 2020-01-21 | 瑞纳智能设备股份有限公司 | One-network balancing device and control method |
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| CN114263957A (en) * | 2021-12-06 | 2022-04-01 | 河北工业大学 | Self-capacity-increasing heating system with energy coupling of primary/secondary heating power pipe network |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231004A (en) * | 2008-02-28 | 2008-07-30 | 清华大学 | Large temperature-difference central heating system |
| CN102297467A (en) * | 2011-08-19 | 2011-12-28 | 清华大学 | Centralized heat supply system for low-temperature backwater |
| CN102338408A (en) * | 2011-07-16 | 2012-02-01 | 双良节能***股份有限公司 | Series-type heat supply system of circulating water in thermal power plant |
| CN202303595U (en) * | 2011-11-02 | 2012-07-04 | 同方节能工程技术有限公司 | Low-vacuum heating device for thermal power plant |
| CN106610044A (en) * | 2016-12-29 | 2017-05-03 | 大连葆光节能空调设备厂 | System for enlarging cogeneration centralized heat supply scale |
| CN106989430A (en) * | 2017-05-17 | 2017-07-28 | 清华大学 | The central heating system and its application method of a kind of integrated utilization industrial exhaust heat |
| US20180223699A1 (en) * | 2015-01-08 | 2018-08-09 | Tsinghua University | Gas-steam combined cycle centralized heat supply device and heat supply method |
-
2018
- 2018-09-13 CN CN201811065016.5A patent/CN109237587B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231004A (en) * | 2008-02-28 | 2008-07-30 | 清华大学 | Large temperature-difference central heating system |
| CN102338408A (en) * | 2011-07-16 | 2012-02-01 | 双良节能***股份有限公司 | Series-type heat supply system of circulating water in thermal power plant |
| CN102297467A (en) * | 2011-08-19 | 2011-12-28 | 清华大学 | Centralized heat supply system for low-temperature backwater |
| CN202303595U (en) * | 2011-11-02 | 2012-07-04 | 同方节能工程技术有限公司 | Low-vacuum heating device for thermal power plant |
| US20180223699A1 (en) * | 2015-01-08 | 2018-08-09 | Tsinghua University | Gas-steam combined cycle centralized heat supply device and heat supply method |
| CN106610044A (en) * | 2016-12-29 | 2017-05-03 | 大连葆光节能空调设备厂 | System for enlarging cogeneration centralized heat supply scale |
| CN106989430A (en) * | 2017-05-17 | 2017-07-28 | 清华大学 | The central heating system and its application method of a kind of integrated utilization industrial exhaust heat |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230521A (en) * | 2019-03-12 | 2019-09-13 | 华电电力科学研究院有限公司 | A kind of thermoelectricity unit cuts off low pressure (LP) cylinder into vapour coupling heat pump step heating system and adjusting method |
| CN110230521B (en) * | 2019-03-12 | 2023-09-19 | 华电电力科学研究院有限公司 | Cascade heating system for heat pump by cutting off steam inlet coupling of low-pressure cylinder of thermoelectric unit and adjusting method |
| CN110274291A (en) * | 2019-05-28 | 2019-09-24 | 华电电力科学研究院有限公司 | The online Water quality processing system of hot net water of one kind and its operation method |
| CN110274291B (en) * | 2019-05-28 | 2023-08-29 | 华电电力科学研究院有限公司 | Online water quality treatment system for primary heat supply network water and operation method thereof |
| CN110715347A (en) * | 2019-10-30 | 2020-01-21 | 瑞纳智能设备股份有限公司 | One-network balancing device and control method |
| CN110947298A (en) * | 2019-12-27 | 2020-04-03 | 浙江德创环保科技股份有限公司 | Desulfurizing tower slurry condensation white-removing system |
| CN114263957A (en) * | 2021-12-06 | 2022-04-01 | 河北工业大学 | Self-capacity-increasing heating system with energy coupling of primary/secondary heating power pipe network |
| CN114909696A (en) * | 2022-04-28 | 2022-08-16 | 哈尔滨工业大学 | Adsorption type low-pressure CO 2 Gas-heat combined storage and supply device and operation method thereof |
| CN114909696B (en) * | 2022-04-28 | 2024-06-25 | 哈尔滨工业大学 | Adsorption type low-pressure CO2Gas-heat combined storage and combined supply device and operation method thereof |
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