CN209540988U - A kind of high back pressure coupling great temperature difference heat supply system for air cooling unit - Google Patents
A kind of high back pressure coupling great temperature difference heat supply system for air cooling unit Download PDFInfo
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- CN209540988U CN209540988U CN201822025356.7U CN201822025356U CN209540988U CN 209540988 U CN209540988 U CN 209540988U CN 201822025356 U CN201822025356 U CN 201822025356U CN 209540988 U CN209540988 U CN 209540988U
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
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Abstract
The utility model relates to a kind of high back pressures for air cooling unit to couple great temperature difference heat supply system, belong to cogeneration of heat and power field of energy-saving technology.The utility model includes cogeneration units, Gateway Station in Heating Network and secondary heat exchange station, cogeneration units include steam turbine, Air-Cooling Island and back pressure condenser, Gateway Station in Heating Network includes heat exchangers for district heating and hydrophobic heat exchanger, and secondary heat exchange station includes hot water type absorption heat pump and water water- to-water heat exchanger；Back pressure condenser, hydrophobic heat exchanger, heat exchangers for district heating, absorption heat pump and water water- to-water heat exchanger are successively installed on primary net water pipe loop, by opening or closing corresponding valve, the switching connection and hot water type absorption heat pump for realizing the primary net water side series and parallel of back pressure condenser and hydrophobic heat exchanger are connect with the switching of the secondary network water side series and parallel of water water- to-water heat exchanger.The utility model, which is realized, heats the step temperature rising of primary net water and secondary network water, effectively reduces the irreversible loss of heat transfer process, practice value with higher.
Description
Technical field
The utility model relates to a kind of high back pressures for air cooling unit to couple great temperature difference heat supply system, belong to cogeneration of heat and power
Field of energy-saving technology.
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 nets the waste heat of recycling once for water-driven heat pump return water using primary net to heat the secondary network water close to heat source, 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.The utility model is innovated mainly for above 3 technical deficiencies and in conjunction with the characteristic of air cooling unit, practical new
Type creates a kind of high back pressure coupling great temperature difference heat supply system for air cooling unit.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide it is a kind of design rationally,
Reliable performance, the high back pressure for air cooling unit couple great temperature difference heat supply system.
The technical scheme in the invention for solving the above technical problem is: a kind of high back pressure coupling for air cooling unit
Great temperature difference heat supply system, it is characterised in that: including cogeneration units, Gateway Station in Heating Network and secondary heat exchange station；
The cogeneration units include steam turbine, Air-Cooling Island and back pressure condenser, the steam drain difference of the steam turbine
It is connect by air-cooled gland steam exhauster and back pressure gland steam exhauster with Air-Cooling Island and back pressure condenser, and No.1 is installed on air-cooled gland steam exhauster
Valve is equipped with No. two valves, the water inlet of the condensation water out and air-cooled condensate pipe of the Air-Cooling Island on back pressure gland steam exhauster
End connection, the water outlet of the air-cooled condensate pipe is connect with boiler feed pipe, and No. three are equipped on air-cooled condensate pipe
The condensation water out of valve, the back pressure condenser is connect with the water inlet end of back pressure condensate pipe, the back pressure condensate pipe
Water outlet is connect with boiler feed pipe, and No. four valves are equipped on back pressure condensate pipe；
The Gateway Station in Heating Network includes heat exchangers for district heating and hydrophobic heat exchanger, and the air intake of the heat exchangers for district heating passes through heating
The connection of the heating extraction opening of extraction steam pipe and steam turbine, and heating valve is installed on heating extraction steam pipe, the heat exchangers for district heating
Hydrophobic outlet connected by the hydrophobic import of the hydrophobic level-one pipe of heat supply network and hydrophobic heat exchanger, and in the hydrophobic level-one Guan Shangan of heat supply network
Equipped with No. seven valves, the hydrophobic outlet of the hydrophobic heat exchanger is connect by the hydrophobic diode of heat supply network with boiler feed pipe, and
No. eight valves are installed on the hydrophobic diode of heat supply network, the heat supply network water inlet of the hydrophobic heat exchanger by heat supply network return water level-one pipe with
The cooling water outlet of back pressure condenser connects, and is equipped with No. six valves, the hydrophobic heat exchanger on heat supply network return water level-one pipe
Heat supply network water out connected by the heat supply network water inlet of heat supply network return water diode and heat exchangers for district heating, and in the heat of hydrophobic heat exchanger
Net water inlet and heat supply network water out are separately installed with No. ten valves and ride on Bus No. 11 valve, the heat supply network water out of the heat exchangers for district heating
It is connect with the water inlet end of heating water supplying pipe, and is separately installed with 13 in the heat supply network water inlet of heat exchangers for district heating and heat supply network water out
Number valve and ten No. four valves；
The secondary heat exchange station includes hot water type absorption heat pump and water water- to-water heat exchanger, the hot water type absorption heat pump
High temperature heat source import is connect with the water outlet of heating water supplying pipe, and the high temperature heat source outlet of the hot water type absorption heat pump passes through heat
The high temperature water inlet of net water supply level-one Guan Yushui water- to-water heat exchanger connects, and in the high temperature heat source import of hot water type absorption heat pump and
High temperature heat source outlet is separately installed with ten No. six valves and ten No. seven valves, and the high temperature water out of the water water- to-water heat exchanger passes through heat
The low-temperature heat source import of net water supply diode and hot water type absorption heat pump connects, the Low Temperature Thermal of the hot water type absorption heat pump
Source outlet is connect with the water inlet end of heating return pipe, and is gone out in the low-temperature heat source import of hot water type absorption heat pump and low-temperature heat source
Mouth is separately installed with 20 No. four valves and 20 No. five valves, and the water outlet of the heating return pipe passes through the first heating respectively
The heat supply network water inlet of the cooling water inlet and hydrophobic heat exchanger of return branch and the second heating return branch and back pressure condenser connects
It connects, and No. five valves is installed in the first heating return branch, No. nine valves are installed in the second heating return branch；Two
Secondary net return pipe passes through the water at low temperature of the first branch pipe of secondary network return water and secondary network return water the second branch pipe and water water- to-water heat exchanger respectively
Import is connected with the medium temperature water inlet of hot water type absorption heat pump, and ten No. nine valves are equipped on the first branch pipe of secondary network return water
Door, is equipped with two No. ten valves on the second branch pipe of secondary network return water, and the middle warm water export of the hot water type absorption heat pump is logical
It crosses heat-pump hot water supply pipe to connect with secondary network water supplying pipe, and 20 No. three valves, the water is installed on heat pump heat supply water pipe
The low temperature water out of water- to-water heat exchanger passes through heating the first branch pipe of water and heating the second branch pipe of water and hot water type absorption heat pump respectively
Medium temperature water inlet connected with secondary network water supplying pipe, and heating the first branch pipe of water on two ride on Bus No. 11 valves are installed, heating
20 No. two valves are installed on the second branch pipe of water.
Furthermore, the boiler feed pipe simultaneously with air-cooled condensate pipe, back pressure condensate pipe and heat supply network hydrophobic two
Grade pipe connection.
Furthermore, the hot net water side of the hydrophobic heat exchanger is provided with hydrophobic heat exchange bypass, and by hydrophobic heat exchange
Road is equipped with ten No. two valves；The hot net water side of the heat exchangers for district heating is provided with heat supply network heating bypass, and heats in heat supply network
Ten No. five valves are installed in bypass.
Furthermore, the primary net water side of the back pressure condenser and hydrophobic heat exchanger can be series connection, can also
To be to be connected in parallel；The primary net water side of the back pressure condenser or hydrophobic heat exchanger and heat exchangers for district heating is to be connected in series；Institute
The secondary network water side for stating hot water type absorption heat pump and water water- to-water heat exchanger can be series connection, be also possible to be connected in parallel.
Furthermore, the high temperature heat source side of the hot water type absorption heat pump is provided with the bypass of heat pump high temperature, and in heat
Ten No. eight valves are installed in pump high temperature bypass；The Low Temperature Thermal source of the hot water type absorption heat pump is provided with by heat pump low temperature
Road, and 20 No. six valves are installed in the bypass of heat pump low temperature.
Furthermore, the heat supply network of the heat exchangers for district heating is hydrophobic after hydrophobic heat exchanger secondary heat exchange, and temperature obtains
It further decreases, is then sent to the low pressure heat regenerative system of steam turbine；The high temperature heat source water of the hot water type absorption heat pump exists
After driving hot water type absorption heat pump acting, water water- to-water heat exchanger secondary heat exchange is entered back into, so that temperature is further decreased.
Furthermore, the hot water type absorption heat pump is supplied water using primary net as driving heat source, is netted back with primary
Water is low-temperature heat source, recycles the waste heat of primary net return water, and Lai Jiare secondary network water realizes great temperature difference heat supply.
The operation method of the above-mentioned high back pressure coupling great temperature difference heat supply system for air cooling unit is as follows:
In non-heating season, No.1 valve and No. three valves are only opened, steam turbine is in the operation of pure condensate operating condition, steam turbine
Steam discharge condenses into condensed water by air cooling in Air-Cooling Island；
In Heating Season, No.1 valve and No. three valves are closed, open No. two valves and No. four valves, Air-Cooling Island stops fortune
Row, steam turbine are in the operation of back pressure operating condition, and the steam discharge of steam turbine condenses into condensed water by hot net water cooling in back pressure condenser；
At this point, the operational mode of heating system has following three kinds:
Operational mode one:
No. five valves, No. six valves, ten No. two valves and ten No. five valves are opened, heating valve, No. seven valves, eight are closed
Number valve, No. nine valves, No. ten valves, ride on Bus No. 11 valve, ten No. three valves and ten No. four valves, heat exchangers for district heating and hydrophobic are changed
Hot device is out of service, and the primary net return water from secondary heat exchange station is delivered to back pressure condenser by the first heating return branch, benefit
Primary net return water is heated with the steam discharge of steam turbine, primary net return water forms primary net and supplies water after being heated, then successively
It is delivered to by heat supply network return water level-one pipe, hydrophobic heat exchange bypass, heat supply network return water diode, heat supply network heating bypass and heating water supplying pipe
Secondary heat exchange station；At this point, heating system is using the external heat supply of back pressure heat-supplying mode；
Operational mode two:
Open heating valve, No. seven valves, No. eight valves, No. five valves, No. six valves, No. ten valves, ride on Bus No. 11 valve,
Ten No. three valves and ten No. four valves, close No. nine valves, ten No. two valves and ten No. five valves, and back pressure condenser hydrophobic changes
The primary net water side of hot device and heat exchangers for district heating is sequentially connected in series, and the primary net return water from secondary heat exchange station is by the first heating
Return branch is delivered to back pressure condenser, level-one heating is carried out to primary net return water using the steam discharge of steam turbine, later by heat supply network
Return water level-one pipe is delivered to hydrophobic heat exchanger, carries out second level heating to primary net return water using heat supply network is hydrophobic, is returned later by heat supply network
Water diode is delivered to heat exchangers for district heating, carries out three-level heating, primary net to primary net return water using the heating steam extraction of steam turbine
Return water forms primary net and supplies water after being heated by three-level, be finally delivered to secondary heat exchange station by heating water supplying pipe；At this point, heating system
Using the external heat supply of mode of the back pressure heat supply in conjunction with heating extraction for heat supply；
Operational mode three:
Open heating valve, No. seven valves, No. eight valves, No. five valves, No. six valves, No. nine valves, ride on Bus No. 11 valve,
Ten No. two valves, ten No. three valves and ten No. four valves, close No. ten valves and ten No. five valves, back pressure condenser and hydrophobic change
The primary net water side of hot device is connected in parallel, and is then connected in series with the primary net water side of heat exchangers for district heating, and secondary heat exchange station is come from
Primary net return water be delivered to back pressure condenser respectively by the first heating return branch and the second heating return branch and hydrophobic changed
Hot device carries out level-one heating to primary net return water respectively using the steam discharge and heat supply network of steam turbine are hydrophobic, is mixed later, then by
Heat supply network return water diode is delivered to heat exchangers for district heating, carries out second level heating to primary net return water using the heating steam extraction of steam turbine,
Primary net return water forms primary net and supplies water after being heated by second level, be finally delivered to secondary heat exchange station by heating water supplying pipe；At this point, for
Hot systems are using the external heat supply of mode of the back pressure heat supply in conjunction with heating extraction for heat supply.
Heating Season heating system be operational mode for the moment, close ten No. six valves, ten No. seven valves, two No. ten valves,
Two ride on Bus No. 11 valves, 20 No. three valves, 20 No. four valves and 20 No. five valves open ten No. eight valves, ten No. nine valves
Door, 20 No. two valves and 20 No. six valves, hot water type absorption heat pump is out of service, and the primary net from Gateway Station in Heating Network supplies
Water is successively delivered to water water- to-water heat exchanger by the bypass of heat pump high temperature and heat supply network water supply level-one pipe, heats two from secondary network return pipe
Secondary net return water forms primary net return water after primary net water supply cooling, is successively bypassed and adopted by heat supply network water supply diode, heat pump low temperature
Warm return pipe is delivered to the back pressure condenser of cogeneration units, and secondary network return water forms secondary network after being heated and supplies water, successively
Heat user is supplied by the second branch pipe of heating water and secondary network water supplying pipe；
When Heating Season heating system is operational mode two, ten No. eight valves and 20 No. six valves are closed, open 16
Number valve, ten No. seven valves, 20 No. four valves and 20 No. five valves, the primary net water supply from Gateway Station in Heating Network are introduced into heat
Water type absorption heat pump enters water water- to-water heat exchanger later and obtains second level cooling, enter hot-water type later and absorb as driving heat source
Formula heat pump is as low-temperature heat source, and primary net, which supplies water, to be obtained forming primary net return water after three-level cooling, then by heating return pipe
It is delivered to the back pressure condenser of cogeneration units, hot water type absorption heat pump recycles low-temperature heat source using driving heat source as power
Heat heat secondary network return water；
At this point, closing two No. ten valves and 20 if opening ten No. nine valves, two ride on Bus No. 11 valves and 20 No. three valves
The secondary network water side of No. two valves, hot water type absorption heat pump and water water- to-water heat exchanger is connected in series, from secondary network return pipe
Secondary network return water enter water water- to-water heat exchanger carry out level-one heating, later enter hot water type absorption heat pump carry out second level heating, two
Secondary net return water obtains forming secondary network water supply after second level heating, successively supplies heat by heat pump heat supply water pipe and secondary network water supplying pipe
User；
At this point, closing 20 if opening ten No. nine valves, two No. ten valves, 20 No. two valves and 20 No. three valves
The secondary network water side of No.1 valve, hot water type absorption heat pump and water water- to-water heat exchanger is connected in parallel, from secondary network return pipe
Secondary network return water respectively enters hot water type absorption heat pump and water water- to-water heat exchanger is heated, shape after secondary network return water is heated
It supplies water at secondary network, is exported and mixed by heat pump heat supply water pipe and heating the second branch pipe of water respectively later, later by secondary
Net water supplying pipe supplies heat user；
When Heating Season heating system is operational mode three, ten No. eight valves and 20 No. six valves are closed, open 16
Number valve, ten No. seven valves, 20 No. four valves and 20 No. five valves, the primary net water supply from Gateway Station in Heating Network are introduced into heat
Water type absorption heat pump enters water water- to-water heat exchanger later and obtains second level cooling, enter hot-water type later and absorb as driving heat source
Formula heat pump is as low-temperature heat source, and primary net, which supplies water, to be obtained forming primary net return water after three-level cooling, then by heating return pipe
It is delivered to the back pressure condenser of cogeneration units and the hydrophobic heat exchanger of Gateway Station in Heating Network respectively, hot water type absorption heat pump is to drive
Dynamic heat source is power, recycles the heat of low-temperature heat source to heat secondary network return water；
At this point, closing two No. ten valves and 20 if opening ten No. nine valves, two ride on Bus No. 11 valves and 20 No. three valves
The secondary network water side of No. two valves, hot water type absorption heat pump and water water- to-water heat exchanger is connected in series, from secondary network return pipe
Secondary network return water enter water water- to-water heat exchanger carry out level-one heating, later enter hot water type absorption heat pump carry out second level heating, two
Secondary net return water obtains forming secondary network water supply after second level heating, successively supplies heat by heat pump heat supply water pipe and secondary network water supplying pipe
User；
At this point, closing 20 if opening ten No. nine valves, two No. ten valves, 20 No. two valves and 20 No. three valves
The secondary network water side of No.1 valve, hot water type absorption heat pump and water water- to-water heat exchanger is connected in parallel, from secondary network return pipe
Secondary network return water respectively enters hot water type absorption heat pump and water water- to-water heat exchanger is heated, shape after secondary network return water is heated
It supplies water at secondary network, is exported and mixed by heat pump heat supply water pipe and heating the second branch pipe of water respectively later, later by secondary
Net water supplying pipe supplies heat user.
Furthermore, when Heating Season heating system is operational mode two or operational mode three, when being delivered to secondary change
When heating load needed for the primary smaller and secondary net side of net water supply flow of heat stations is larger, due to by hot water type absorption heat pump
The limitation of COP size, the primary net water supply flow into secondary heat exchange station is limited；At this point it is possible to open and adjust ten No. eight valves
The aperture of door, the primary net in part supply water and are directly first delivered to water water- to-water heat exchanger by the bypass of heat pump high temperature, increase water water- to-water heat exchanger
External heating load, be then delivered to hot water type absorption heat pump again as low-temperature heat source, thus also can accordingly increase hot-water type
Thus the driving heat source consumption of absorption heat pump meets two to increase the external heating load of hot water type absorption heat pump
Heating demand needed for secondary net side.
The utility model compared with prior art, has the following advantages that and effect: (1) the utility model is designed reasonably, knot
Structure is simple, reliable performance, for air cooling unit, realizes and couples big temperature difference heat pump in Low Vacuum Heating System, reduce work
Journey initial cost, realizes effective recycling of thermal power plant's low temperature exhaust heat, while improving the conveying capacity of heating network；(2) this reality
It is connect by hydrophobic heat exchanger with the switching of back pressure condenser series and parallel with novel, effectively controls disengaging back pressure condenser
Primary net circling water flow rate and temperature had both realized primary net return water step heating and had reduced turbine back pressure, reduced acting ability
Loss, and realize and steam turbine can flexibly be adjusted under back pressure supplying thermal condition；(3) the utility model passes through secondary
The big temperature difference heat pump of net side is connect with the switching of water water- to-water heat exchanger series and parallel, realizes the adjusting to secondary network supply water temperature, improves heat
The heating quality of user；(4) principle of the utility model based on cascaded utilization of energy rationally designs coupled system, realizes to one
The heating of the step temperature rising of secondary net water and secondary network water, effectively reduces the irreversible loss of heat transfer process, reality with higher
Applying value.
Detailed description of the invention
Fig. 1 is that the structure of the high back pressure coupling great temperature difference heat supply system in the utility model embodiment for air cooling unit is shown
It is intended to.
Fig. 2 is that the high back pressure coupling for air cooling unit in the utility model embodiment with multiple secondary heat exchange stations is big
The structural schematic diagram of temperature difference heat supply system.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
Referring to Fig. 1, the high back pressure for air cooling unit in the present embodiment couples great temperature difference heat supply system, including thermoelectricity connection
Produce unit 1, Gateway Station in Heating Network 3 and secondary heat exchange station 5；
Cogeneration units 1 include steam turbine 11, Air-Cooling Island 12 and back pressure condenser 13, and the steam drain of steam turbine 11 is distinguished
It is connect by air-cooled gland steam exhauster 21 and back pressure gland steam exhauster 22 with Air-Cooling Island 12 and back pressure condenser 13, and on air-cooled gland steam exhauster 21
No.1 valve 14 is installed, No. two valves 15 are installed on back pressure gland steam exhauster 22, the condensation water out of Air-Cooling Island 12 with it is air-cooled
The water inlet end of condensate pipe 23 connects, and the water outlet of air-cooled condensate pipe 23 is connect with boiler feed pipe 25, and in air-cooled condensation
No. three valves 16 are installed, the condensation water out of back pressure condenser 13 and the water inlet end of back pressure condensate pipe 24 connect on water pipe 23
It connects, the water outlet of back pressure condensate pipe 24 is connect with boiler feed pipe 25, and No. four valves are equipped on back pressure condensate pipe 24
Door 17；
Gateway Station in Heating Network 3 includes heat exchangers for district heating 31 and hydrophobic heat exchanger 32, and the air intake of heat exchangers for district heating 31 passes through heating
Extraction steam pipe 26 is connect with the heating extraction opening of steam turbine 11, and heating valve 18 is equipped on heating extraction steam pipe 26, and heat supply network adds
The hydrophobic outlet of hot device 31 is connect by the hydrophobic level-one pipe 42 of heat supply network with the hydrophobic import of hydrophobic heat exchanger 32, and hydrophobic in heat supply network
No. seven valves 33 are installed, the hydrophobic outlet of hydrophobic heat exchanger 32 is given by the hydrophobic diode 43 of heat supply network with boiler on level-one pipe 42
Water pipe 25 connects, and No. eight valves 34 are equipped on the hydrophobic diode 43 of heat supply network, and the heat supply network water inlet of hydrophobic heat exchanger 32 is logical
It crosses heat supply network return water level-one pipe 28 to connect with the cooling water outlet of back pressure condenser 13, and is equipped on heat supply network return water level-one pipe 28
No. six valves 20, the heat supply network water out of hydrophobic heat exchanger 32 pass through the hot net water of heat supply network return water diode 46 and heat exchangers for district heating 31
Import connection, and No. ten valves 36 and ride on Bus No. 11 are separately installed in the heat supply network water inlet of hydrophobic heat exchanger 32 and heat supply network water out
Valve 37, the hot net water side of hydrophobic heat exchanger 32 is provided with hydrophobic heat exchange bypass 45, and is equipped in hydrophobic heat exchange bypass 45
The heat supply network water out of ten No. two valves 38, heat exchangers for district heating 31 is connect with the water inlet end of heating water supplying pipe 48, and is heated in heat supply network
The heat supply network water inlet and heat supply network water out of device 31 are separately installed with ten No. three valve 39 and ten No. four valves 40, heat exchangers for district heating 31
Hot net water side be provided with heat supply network heating bypass 47, and heat supply network heating bypass 47 on ten No. five valves 41 are installed；
Secondary heat exchange station 5 includes hot water type absorption heat pump 51 and water water- to-water heat exchanger 52, hot water type absorption heat pump 51
High temperature heat source import is connect with the water outlet of heating water supplying pipe 48, and the high temperature heat source outlet of hot water type absorption heat pump 51 passes through heat
Net water supply level-one pipe 65 is connect with the high temperature water inlet of water water- to-water heat exchanger 52, and in the high temperature heat source of hot water type absorption heat pump 51
Import and high temperature heat source outlet are separately installed with ten No. six valve 53 and ten No. seven valves 54, the height of hot water type absorption heat pump 51
Warm source is provided with heat pump high temperature bypass 64, and ten No. eight valves 55 are equipped in heat pump high temperature bypass 64, the heat exchange of water water
The high temperature water out of device 52 is connect by heat supply network water supply diode 66 with the low-temperature heat source import of hot water type absorption heat pump 51, heat
The low-temperature heat source outlet of water type absorption heat pump 51 is connect with the water inlet end of heating return pipe 68, and in hot water type absorption heat pump
51 low-temperature heat source import and low-temperature heat source outlet are separately installed with 20 No. four valve 61 and 20 No. five valves 62, hot-water type
The Low Temperature Thermal source of absorption heat pump 51 is provided with heat pump low temperature bypass 67, and is equipped with 26 in heat pump low temperature bypass 67
Number valve 63, the water outlet of heating return pipe 68 pass through respectively the first heating return branch 27 and the second heating return branch 44 with
The cooling water inlet of back pressure condenser 13 is connected with the heat supply network water inlet of hydrophobic heat exchanger 32, and in the first heating return branch 27
On No. five valves 19 are installed, No. nine valves 35 are installed in the second heating return branch 44；Secondary network return pipe 69 is distinguished
Pass through the low temperature water inlet and heat of the first branch pipe of secondary network return water 70 and the second branch pipe of secondary network return water 71 and water water- to-water heat exchanger 52
The medium temperature water inlet of water type absorption heat pump 51 connects, and ten No. nine valves are equipped on the first branch pipe of secondary network return water 70
56, two No. ten valves 57, the middle warm water export of hot water type absorption heat pump 51 are installed on the second branch pipe of secondary network return water 71
It is connect by heat pump heat supply water pipe 74 with secondary network water supplying pipe 75, and 20 No. three valves is installed on heat pump heat supply water pipe 74
60, the low temperature water out of water water- to-water heat exchanger 52 passes through heating the first branch pipe of water 72 and heating the second branch pipe of water 73 and hot-water type respectively
The medium temperature water inlet and secondary network water supplying pipe 75 of absorption heat pump 51 connect, and are equipped with 20 on heating the first branch pipe of water 72
No.1 valve 58 is equipped with 20 No. two valves 59 on heating the second branch pipe of water 73.
In the present embodiment, the primary net water side of back pressure condenser 13 and hydrophobic heat exchanger 32 can be series connection,
It can be and be connected in parallel；Back pressure condenser 13 or hydrophobic heat exchanger 32 are the companies of series connection with the primary net water side of heat exchangers for district heating 31
It connects；The secondary network water side of hot water type absorption heat pump 51 and water water- to-water heat exchanger 52 can be series connection, be also possible in parallel connect
It connects.
In the present embodiment, boiler feed pipe 25 is dredged with air-cooled condensate pipe 23, back pressure condensate pipe 24 and heat supply network simultaneously
Water diode 43 connects.
In the present embodiment, the heat supply network of heat exchangers for district heating 31 is hydrophobic after 32 secondary heat exchange of hydrophobic heat exchanger, and temperature obtains
To further decreasing, it is then sent to the low pressure heat regenerative system of steam turbine 11；The high temperature heat source water of hot water type absorption heat pump 51
After driving hot water type absorption heat pump 51 does work, 52 secondary heat exchange of water water- to-water heat exchanger is entered back into, so that temperature obtains further
It reduces.
In the present embodiment, hot water type absorption heat pump 51 is supplied water using primary net as driving heat source, is netted back with primary
Water is low-temperature heat source, recycles the waste heat of primary net return water, and Lai Jiare secondary network water realizes great temperature difference heat supply.
In the present embodiment, all valves all have the function of adjusting pipeline flow, and can remotely carry out opening for valve
Degree is adjusted, and is remotely operated particular by the DCS system of heating system.
The carrying out practically method of the present embodiment is as follows:
In non-heating season, No.1 valve 14 and No. three valves 16 are only opened, steam turbine 11 is in the operation of pure condensate operating condition, vapour
The steam discharge of turbine 11 condenses into condensed water by air cooling in Air-Cooling Island 12.
In Heating Season, No.1 valve 14 and No. three valves 16 are closed, No. two valves 15 and No. four valves 17 are opened, it is air-cooled
Island 12 is out of service, and steam turbine 11 is in the operation of back pressure operating condition, and the steam discharge of steam turbine 11 is in back pressure condenser 13 by hot net water
Cooling condenses into condensed water；At this point, the operational mode of heating system has following three kinds:
Operational mode one:
Open valve 38 and ten No. five valve 41 of valve 20,12 of No. five valves 19, six, close heating valve 18,
37, ten No. three 35, No. ten valves 36 of No. seven valves of valve 34, nine of valve 33, eight, ride on Bus No. 11 valve valves 39 and ten No. four
Valve 40, heat exchangers for district heating 31 and hydrophobic heat exchanger 32 are out of service, and the primary net return water from secondary heat exchange station 5 is adopted by first
Warm return branch 27 is delivered to back pressure condenser 13, is heated using the steam discharge of steam turbine 11 to primary net return water, primary net
Return water forms primary net and supplies water after being heated, then pass sequentially through heat supply network return water level-one pipe 28, hydrophobic heat exchange bypasses 45, heat supply network and returns
Water diode 46, heat supply network heating bypass 47 and heating water supplying pipe 48 are delivered to secondary heat exchange station 5；At this point, what heating system used
It is the external heat supply of back pressure heat-supplying mode；
Operational mode two:
Open the valve 33, eight of heating valve 18, seven valve 34, five 20, No. ten valves of valve of valve 19, six
36,37, ten No. three valve 39 and ten No. four valves 40 of ride on Bus No. 11 valve close 35, ten No. two valves 38 and 15 of No. nine valves
Number valve 41, the primary net water side of back pressure condenser 13, hydrophobic heat exchanger 32 and heat exchangers for district heating 31 is sequentially connected in series, comes from
The primary net return water at secondary heat exchange station 5 is delivered to back pressure condenser 13 by the first heating return branch 27, utilizes steam turbine 11
Steam discharge carries out level-one heating to primary net return water, is delivered to hydrophobic heat exchanger 32 by heat supply network return water level-one pipe 28 later, utilizes heat
Net it is hydrophobic to primary net return water carry out second level heating, heat exchangers for district heating 31 is delivered to by heat supply network return water diode 46 later, utilize
The heating steam extraction of steam turbine 11 carries out three-level heating to primary net return water, and primary net return water forms primary net and supplies after being heated by three-level
Water is finally delivered to secondary heat exchange station 5 by heating water supplying pipe 48；At this point, heating system is taken out using back pressure heat supply and heating
Mode external heat supply of the vapour for thermal；
Operational mode three:
Open the valve 33, eight of heating valve 18, seven valve 34, five 20, No. nine valves of valve of valve 19, six
35, the valve 38,13 of ride on Bus No. 11 valve 37,12 valve 39 and ten No. four valve 40, closes No. ten valves 36 and 15
The primary net water side of number valve 41, back pressure condenser 13 and hydrophobic heat exchanger 32 is connected in parallel, then with heat exchangers for district heating 31
Primary net water side is connected in series, and the primary net return water from secondary heat exchange station 5 is by the first heating return branch 27 and the second heating
Return branch 44 is delivered to back pressure condenser 13 and hydrophobic heat exchanger 32 respectively, utilizes hydrophobic point of steam discharge and heat supply network of steam turbine 11
It is other that level-one heating is carried out to primary net return water, it is mixed later, then heat exchangers for district heating is delivered to by heat supply network return water diode 46
31, second level heating is carried out to primary net return water using the heating steam extraction of steam turbine 11, primary net return water is formed after being heated by second level
Primary net supplies water, and is finally delivered to secondary heat exchange station 5 by heating water supplying pipe 48；At this point, heating system is using back pressure heat supply
The external heat supply of mode in conjunction with heating extraction for heat supply.
In the carrying out practically method of the present embodiment, Heating Season heating system is operational mode a period of time, closes ten No. six valves
53, ten No. seven valves of door, 54, two No. ten valves 57, the valve 60,24 of two ride on Bus No. 11 valve 58,23 61 and of valve
20 No. five valves 62 open ten No. eight valve 59 and 20 No. six valves 63 of valve 56,22 of valve 55,19,
Hot water type absorption heat pump 51 is out of service, and the primary net from Gateway Station in Heating Network 3 supplies water successively by heat pump high temperature bypass 64 and heat
Net water supply level-one pipe 65 is delivered to water water- to-water heat exchanger 52, heats the secondary network return water from secondary network return pipe 69, and primary net supplies
Primary net return water is formed after water cooling, it is successively defeated by heat supply network water supply diode 66, heat pump low temperature bypass 67 and heating return pipe 68
It send to the back pressure condenser 13 of cogeneration units 1, secondary network return water forms secondary network after being heated and supplies water, successively by heating water
Second branch pipe 73 and secondary network water supplying pipe 75 supply heat user.
In the carrying out practically method of the present embodiment, when Heating Season heating system is operational mode two, ten No. eight valves are closed
55 and 20 No. six valves 63 of door, open ten No. six valve 61 and 20 No. five valves of valve 54,24 of valve 53,17
Door 62, the primary net water supply from Gateway Station in Heating Network 3 are introduced into hot water type absorption heat pump 51 as driving heat source, enter water later
Water- to-water heat exchanger 52 obtains second level cooling, enters hot water type absorption heat pump 51 later and is used as low-temperature heat source, primary net, which supplies water, to be obtained
Primary net return water is formed after three-level cooling, the back pressure condenser of cogeneration units 1 is then delivered to by heating return pipe 68
13, hot water type absorption heat pump 51 recycles the heat of low-temperature heat source using driving heat source as power to heat secondary network return water；
At this point, closing two No. ten valves if opening ten No. nine valves 56, two ride on Bus No. 11 valve 58 and 20 No. three valves 60
The secondary network water side of 57 and 20 No. two valves 59, hot water type absorption heat pump 51 and water water- to-water heat exchanger 52 is connected in series, and comes from
The secondary network return water of secondary network return pipe 69 enters water water- to-water heat exchanger 52 and carries out level-one heating, enters hot-water type absorption type heat later
Pump 51 carries out second level heating, and formation secondary network supplies water after secondary network return water obtains second level heating, successively by heat pump heat supply water pipe
74 and secondary network water supplying pipe 75 supply heat user；
At this point, if opening ten No. nine valve 59 and 20 No. three valves 60 of valve 57,22 of valve 56,20,
Close two ride on Bus No. 11 valves 58, the secondary network water side of hot water type absorption heat pump 51 and water water- to-water heat exchanger 52 is connected in parallel, and is come from
The secondary network return water of secondary network return pipe 69 respectively enters hot water type absorption heat pump 51 and water water- to-water heat exchanger 52 is heated, and two
Secondary net return water forms secondary network after being heated and supplies water, defeated by heat pump heat supply water pipe 74 and heating water the second branch pipe 73 respectively later
It out and is mixed, heat user is supplied by secondary network water supplying pipe 75 later.
In the carrying out practically method of the present embodiment, when Heating Season heating system is operational mode three, ten No. eight valves are closed
55 and 20 No. six valves 63 of door, open ten No. six valve 61 and 20 No. five valves of valve 54,24 of valve 53,17
Door 62, the primary net water supply from Gateway Station in Heating Network 3 are introduced into hot water type absorption heat pump 51 as driving heat source, enter water later
Water- to-water heat exchanger 52 obtains second level cooling, enters hot water type absorption heat pump 51 later and is used as low-temperature heat source, primary net, which supplies water, to be obtained
Primary net return water is formed after three-level cooling, is then coagulated by the back pressure that heating return pipe 68 is delivered to cogeneration units 1 respectively
The hydrophobic heat exchanger 32 of vapour device 13 and Gateway Station in Heating Network 3, hot water type absorption heat pump 51 recycle Low Temperature Thermal using driving heat source as power
The heat in source heats secondary network return water；
At this point, closing two No. ten valves if opening ten No. nine valves 56, two ride on Bus No. 11 valve 5 and 20 No. three valves 60
The secondary network water side of 57 and 20 No. two valves 59, hot water type absorption heat pump 51 and water water- to-water heat exchanger 52 is connected in series, and comes from
The secondary network return water of secondary network return pipe 69 enters water water- to-water heat exchanger 52 and carries out level-one heating, enters hot-water type absorption type heat later
Pump 51 carries out second level heating, and formation secondary network supplies water after secondary network return water obtains second level heating, successively by heat pump heat supply water pipe
74 and secondary network water supplying pipe 75 supply heat user；
At this point, if opening ten No. nine valve 59 and 20 No. three valves 60 of valve 57,22 of valve 56,20,
Close two ride on Bus No. 11 valves 58, the secondary network water side of hot water type absorption heat pump 51 and water water- to-water heat exchanger 52 is connected in parallel, and is come from
The secondary network return water of secondary network return pipe 69 respectively enters hot water type absorption heat pump 51 and water water- to-water heat exchanger 52 is heated, and two
Secondary net return water forms secondary network after being heated and supplies water, defeated by heat pump heat supply water pipe 74 and heating water the second branch pipe 73 respectively later
It out and is mixed, heat user is supplied by secondary network water supplying pipe 75 later.
Furthermore, specific as shown in Fig. 2, when Heating Season heating system is operational mode two or operational mode three,
When the heating load needed for the primary smaller and secondary net side of net water supply flow for being delivered to secondary heat exchange station 5 is larger, due to by
The COP size of hot water type absorption heat pump 51 limits, and the primary net water supply flow into secondary heat exchange station 5 is limited；At this point it is possible to
The aperture of ten No. eight valves 55 is opened and adjusts, the primary net in part supplies water and is directly first delivered to water water by heat pump high temperature bypass 64
Heat exchanger 52 increases the external heating load of water water- to-water heat exchanger 52, is then delivered to hot-water type absorption type heat again as low-temperature heat source
Pump 51, thus also can accordingly increase the driving heat source consumption of hot water type absorption heat pump 51, so that it is absorption to increase hot-water type
The external heating load of heat pump 51, thus come heating demand needed for meeting secondary net side.
It is guidance with " temperature counterpart, cascade utilization ", by opening or closing in the carrying out practically method of the present embodiment
Corresponding valve, to realize following different connection types and function:
It (A), can be by closing corresponding valve, so that heating system is supplied only with back pressure at Heating Season initial stage or latter stage
Hot mode heat supply；Hereby it is achieved that passing through the external heat supply of low temperature exhaust heat of steam turbine 11, disappear to reduce the heating steam extraction of high-quality
Consumption, to reduce the acting capacity loss of heating system.
It (B), can be by closing corresponding valve, so that heating system uses back pressure heat supply and adopts in the Heating Season high and cold phase
The mode heat supply that warm extraction for heat supply combines, and the primary net water of back pressure condenser 13, hydrophobic heat exchanger 32 and heat exchangers for district heating 31
Side is sequentially connected in series；Hereby it is achieved that the step heating of primary net return water, reduces the primary net water that back pressure condenser 13 exports
Temperature reaches while sufficiently recycling 11 low temperature exhaust heat of steam turbine, 11 back pressure of steam turbine is effectively reduced, reduces steam turbine 11
Do work capacity loss.
It (C), can be by closing corresponding valve, so that heating system uses back pressure heat supply and adopts in the Heating Season high and cold phase
The mode heat supply that warm extraction for heat supply combines, and the primary net water side of back pressure condenser 13 and hydrophobic heat exchanger 32 is connected in parallel, so
It is connected in series afterwards with the primary net water side of heat exchangers for district heating 31；Thus, it is possible to by the aperture for changing corresponding valve, according to vapour
The variation of 11 load of turbine changes the flow for entering the primary net return water of back pressure condenser 13, to realize in back pressure for thermal technology
Steam turbine 11 can flexibly be adjusted under condition.
In the carrying out practically method of the present embodiment, by opening or closing corresponding valve, realize that hot-water type is absorption
Heat pump 51 is connect with the switching of the secondary network water side series and parallel of water water- to-water heat exchanger 52, realizes the adjusting to secondary network supply water temperature,
Improve the heating quality of heat user.
Although the utility model is disclosed as above with embodiment, its protection scope being not intended to limit the utility model,
Any technical staff for being familiar with this technology, it is made in the conception and scope for not departing from the utility model to change and retouch,
It all should belong to the protection range of the utility model.
Claims (5)
1. a kind of high back pressure for air cooling unit couples great temperature difference heat supply system, it is characterised in that: including cogeneration units
(1), Gateway Station in Heating Network (3) and secondary heat exchange station (5)；
The cogeneration units (1) include steam turbine (11), Air-Cooling Island (12) and back pressure condenser (13), the steam turbine
(11) steam drain passes through air-cooled gland steam exhauster (21) and back pressure gland steam exhauster (22) and Air-Cooling Island (12) and back pressure condenser respectively
(13) it connects, and No.1 valve (14) is installed on air-cooled gland steam exhauster (21), be equipped with No. two on back pressure gland steam exhauster (22)
The condensation water out of valve (15), the Air-Cooling Island (12) is connect with the water inlet end of air-cooled condensate pipe (23), described air-cooled solidifying
The water outlet for bearing water pipe (23) is connect with boiler feed pipe (25), and No. three valves are equipped on air-cooled condensate pipe (23)
(16), the condensation water out of the back pressure condenser (13) is connect with the water inlet end of back pressure condensate pipe (24), and the back pressure is solidifying
The water outlet for bearing water pipe (24) is connect with boiler feed pipe (25), and No. four valves are equipped on back pressure condensate pipe (24)
(17)；
The Gateway Station in Heating Network (3) includes heat exchangers for district heating (31) and hydrophobic heat exchanger (32), the heat exchangers for district heating (31) into
Steam ports is connect by heating extraction steam pipe (26) with the heating extraction opening of steam turbine (11), and is equipped on heating extraction steam pipe (26)
The hydrophobic outlet of heating valve (18), the heat exchangers for district heating (31) passes through the hydrophobic level-one pipe (42) of heat supply network and hydrophobic heat exchanger
(32) hydrophobic import connection, and No. seven valves (33), the hydrophobic heat exchanger are installed on the hydrophobic level-one pipe (42) of heat supply network
(32) hydrophobic outlet is connect by the hydrophobic diode of heat supply network (43) with boiler feed pipe (25), and in the hydrophobic diode of heat supply network
(43) No. eight valves (34) are installed, the heat supply network water inlet of the hydrophobic heat exchanger (32) passes through heat supply network return water level-one pipe (28) on
It is connect with the cooling water outlet of back pressure condenser (13), and No. six valves (20) is installed on heat supply network return water level-one pipe (28),
The heat supply network water out of the hydrophobic heat exchanger (32) passes through the hot net water of heat supply network return water diode (46) and heat exchangers for district heating (31)
Import connection, and No. ten valves (36) and ten are separately installed in the heat supply network water inlet of hydrophobic heat exchanger (32) and heat supply network water out
The heat supply network water out of No.1 valve (37), the heat exchangers for district heating (31) is connect with the water inlet end of heating water supplying pipe (48), and
The heat supply network water inlet and heat supply network water out of heat exchangers for district heating (31) are separately installed with ten No. three valves (39) and ten No. four valves
(40)；
The secondary heat exchange station (5) includes hot water type absorption heat pump (51) and water water- to-water heat exchanger (52), and the hot-water type absorbs
The high temperature heat source import of formula heat pump (51) is connect with the water outlet of heating water supplying pipe (48), the hot water type absorption heat pump (51)
High temperature heat source outlet connect with the high temperature water inlet of water water- to-water heat exchanger (52) by heat supply network water supply level-one pipe (65), and in hot water
The high temperature heat source import of type absorption heat pump (51) and high temperature heat source outlet are separately installed with ten No. six valves (53) and ten No. seven
The high temperature water out of valve (54), the water water- to-water heat exchanger (52) passes through heat supply network water supply diode (66) and hot-water type absorption type heat
Pump the low-temperature heat source import connection of (51), low-temperature heat source outlet and the heating return pipe of the hot water type absorption heat pump (51)
(68) water inlet end connection, and installed respectively in the low-temperature heat source import of hot water type absorption heat pump (51) and low-temperature heat source outlet
There are No. five valves (62) of 20 No. four valve (61) He Ershi, the water outlet of the heating return pipe (68) passes through first respectively and adopts
The cooling water inlet and hydrophobic heat exchanger of warm return branch (27) and the second heating return branch (44) and back pressure condenser (13)
(32) heat supply network water inlet connection, and No. five valves (19) are installed in the first heating return branch (27), in the second heating
No. nine valves (35) are installed in return branch (44)；Secondary network return pipe (69) passes through the first branch pipe of secondary network return water respectively
(70) and the low temperature water inlet and hot water type absorption heat pump of the second branch pipe of secondary network return water (71) and water water- to-water heat exchanger (52)
(51) medium temperature water inlet connection, and ten No. nine valves (56) are installed on the first branch pipe of secondary network return water (70), secondary
Two No. ten valves (57), the middle warm water export of the hot water type absorption heat pump (51) are installed on the second branch pipe of net return water (71)
It is connect by heat pump heat supply water pipe (74) with secondary network water supplying pipe (75), and is equipped with 23 on heat pump heat supply water pipe (74)
Number valve (60), the low temperature water out of the water water- to-water heat exchanger (52) pass through heating the first branch pipe of water (72) respectively and heat water the
Two branch pipes (73) are connect with the medium temperature water inlet of hot water type absorption heat pump (51) and secondary network water supplying pipe (75), and in heating water
Two ride on Bus No. 11 valves (58) are installed on the first branch pipe (72), 20 No. two valves are installed in heating the second branch pipe of water (73)
(59).
2. the high back pressure according to claim 1 for air cooling unit couples great temperature difference heat supply system, it is characterised in that: institute
Boiler feed pipe (25) is stated to connect with air-cooled condensate pipe (23), back pressure condensate pipe (24) and the hydrophobic diode of heat supply network (43) simultaneously
It connects.
3. the high back pressure according to claim 1 for air cooling unit couples great temperature difference heat supply system, it is characterised in that: institute
The hot net water side for stating hydrophobic heat exchanger (32) is provided with hydrophobic heat exchange bypass (45), and is equipped in hydrophobic heat exchange bypass (45)
Ten No. two valves (38)；The hot net water side of the heat exchangers for district heating (31) is provided with heat supply network heating bypass (47), and adds in heat supply network
Ten No. five valves (41) are installed on thermal bypass (47).
4. the high back pressure according to claim 1 or 3 for air cooling unit couples great temperature difference heat supply system, feature exists
In: the primary net water side of the back pressure condenser (13) and hydrophobic heat exchanger (32) is to be connected in series, or be connected in parallel；Institute
The primary net water side for stating back pressure condenser (13) or hydrophobic heat exchanger (32) and heat exchangers for district heating (31) is to be connected in series；The heat
The secondary network water side of water type absorption heat pump (51) and water water- to-water heat exchanger (52) is to be connected in series, or be connected in parallel.
5. the high back pressure according to claim 1 for air cooling unit couples great temperature difference heat supply system, it is characterised in that: institute
The high temperature heat source side for stating hot water type absorption heat pump (51) is provided with heat pump high temperature bypass (64), and bypasses (64) in heat pump high temperature
On ten No. eight valves (55) are installed；The Low Temperature Thermal source of the hot water type absorption heat pump (51) is provided with the bypass of heat pump low temperature
(67), 20 No. six valves (63) and in heat pump low temperature bypass (67) are installed.
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| CN201822025356.7U CN209540988U (en) | 2018-12-04 | 2018-12-04 | A kind of high back pressure coupling great temperature difference heat supply system for air cooling unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520808A (en) * | 2020-03-09 | 2020-08-11 | 华电电力科学研究院有限公司 | Complex combined heat and power heating system based on low-temperature waste heat recovery and electric heating load adjusting method |
| CN114440296A (en) * | 2021-12-10 | 2022-05-06 | 山西大唐国际云冈热电有限责任公司 | Large-temperature-difference central heating system and heating method |
-
2018
- 2018-12-04 CN CN201822025356.7U patent/CN209540988U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520808A (en) * | 2020-03-09 | 2020-08-11 | 华电电力科学研究院有限公司 | Complex combined heat and power heating system based on low-temperature waste heat recovery and electric heating load adjusting method |
| CN111520808B (en) * | 2020-03-09 | 2021-04-13 | 华电电力科学研究院有限公司 | Complex combined heat and power heating system based on low-temperature waste heat recovery and electric heating load adjusting method |
| CN114440296A (en) * | 2021-12-10 | 2022-05-06 | 山西大唐国际云冈热电有限责任公司 | Large-temperature-difference central heating system and heating method |
| CN114440296B (en) * | 2021-12-10 | 2024-05-07 | 山西大唐国际云冈热电有限责任公司 | Large-temperature-difference central heating system and heating method |
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