CN202221122U - Heat supply system directly recycling condensation waste heat of auxiliary machine in thermal power plant - Google Patents
Heat supply system directly recycling condensation waste heat of auxiliary machine in thermal power plant Download PDFInfo
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- CN202221122U CN202221122U CN 201120250844 CN201120250844U CN202221122U CN 202221122 U CN202221122 U CN 202221122U CN 201120250844 CN201120250844 CN 201120250844 CN 201120250844 U CN201120250844 U CN 201120250844U CN 202221122 U CN202221122 U CN 202221122U
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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]
- Y02B30/12—Hot water central heating systems using heat pumps
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Abstract
The utility model relates to a heat supply system directly recycling condensation waste heat of auxiliary machines in a thermal power plant. The heat supply system comprises an auxiliary steam turbine (1), a first water-cooled condenser (2) and absorption type heat pumps (XR1-n). The absorption type heat pumps (XR1-n) are additionally provided with subcoolers (4). The system is further provided with a second water-cooled condenser (3). Backwater in a heating network is divided into two branches before or after entering the power plant. One branch first enters an absorber of the first absorption type heat pump (XR1) serially connected with other heat pumps until the branch enters an aspirator of the nth absorption type heat pump (XRn). The first branch gets outs of the aspirator of the nth absorption type heat pump (XRn) and then enters a condenser of the nth absorption type heat pump (XRn) serially connected with other heat pumps until the branch gets out of the condenser of the first absorption type heat pump (XR1). The other branch enters the subcooler (4) of each absorption type heat pump (XR1-n) in a parallel-connection way. The auxiliary steam turbine (1) accesses an evaporator of each absorption type heat pump (XR1-n) in a parallel-connection way. The heat supply system in the utility model can recycle more condensation waste heat of the thermal power plant and improve the running efficiency of the heat pumps.
Description
Technical field
The utility model relates to a kind of cogeneration heating system, is applicable to that the auxiliary steam turbine exhaust steam of cogeneration power plant is more energy-conservation, utilizes safely and reliably, and heat network system more utilizes condensation waste heat.
Background technology
Along with the shortage of the energy and the requirement of energy-saving and emission-reduction improve day by day, the comprehensive utilization technique of the energy is in continuous lifting.Urban planning cogeneration in the north carries out central heating, to substitute original independent boiler central heating, realizes the requirement of energy-saving and emission-reduction.Make full use of steam power plant's used heat, to improve the heat capacity of steam power plant, realize energy-saving and emission-reduction better, guarantee the safe and reliable operation of steam power plant and heat supply network simultaneously again, various new flow processs require study.Realize the more auxiliary steam turbine exhaust steam used heat that reclaims in the power plant, the most important condition is that adopting on this basis with the electricity is the source pump of power, or is the absorption type heat pump assembly of power with the heat supply network high-temperature water with the secondary net return water temperature reduction of hot user side.Heat supply network backwater through power plant is confessed carries out refrigeration cool-down, supplies the secondary net to use again as the waste heat source of heat pump, makes the heat supply network return water temperature reduce back telegram in reply factory.Power plant heat supply network backwater is introduced into former plant condenser after getting into power plant, with electric power plant circulating water be blended in heat up in the condenser after, get into absorption heat pump again, see off after in heat pump, heating up.In this system, the temperature that recirculated water goes out heat pump is the keys of heat supply network in many recovery of whole heating season condensation heat, in same outlet temperature, can reclaim more condensation waste heat, and become the another difficult problem of steam power plant's central heating technology with high-grade drawing gas less.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency; A kind of condensation waste heat of realizing directly reclaiming more steam power plants auxiliary steam turbine is provided, and operational efficiency and the heat network system that the improves heat pump more steam power plant of reliability service directly reclaims the heating system of subsidiary engine condensation waste heat.
The purpose of the utility model is achieved in that a kind of steam power plant directly reclaims the heating system of subsidiary engine condensation waste heat; Comprise auxiliary steam turbine, first water-cooled condenser, vapor-water heat exchanger and absorption heat pump; Said absorption heat pump has the n platform; N is >=2 natural number, and high steam is extracted the thermal source of part steam as absorption heat pump and vapor-water heat exchanger out in sucking condensing turbine work done generating back.The auxiliary steam turbine exhaust steam condenses into water by condenser and evaporimeter, and condensation waste heat is recycled.Said absorption heat pump has additional subcooler; The increase of said system has one second water-cooled condenser; The heat supply network backwater is divided into the absorber that two tunnel: one road heat supply network backwater is introduced into first absorption heat pump before or after entering power plant; The absorber that gets into second absorption heat pump again is connected in series successively, and until the aspirator that gets into n platform absorption heat pump, the aspirator that goes out n platform absorption heat pump gets into the condenser of n platform absorption heat pump again; Be connected in series successively from n-1, n-2 then, the condenser from first absorption heat pump goes out at last; Another road heat supply network backwater parallel connection gets into the subcooler of each absorption heat pump; Two road heat supply network backwater merge at last; Directly or again behind vapor-water heat exchanger, see off; The auxiliary steam turbine exhaust steam is divided into the evaporimeter that three tunnel: one road auxiliary steam turbine exhaust steam parallel connection inserts each absorption heat pump, and second water-cooled condenser is inserted on another road; Also have one the road to insert first water-cooled condenser, the cooling circulating water of first water-cooled condenser is discharged the cooling device that inserts steam power plant.
The utility model steam power plant directly reclaims the heating system of subsidiary engine condensation waste heat; The heat supply network backwater gets into and to be divided into two tunnel: one road heat supply network backwater earlier after the steam power plant and to get into second water-cooled condenser, goes out the absorber that gets into first absorption heat pump behind second water-cooled condenser again; Another road heat supply network backwater does not get into second water-cooled condenser and the directly parallelly connected subcooler that gets into each absorption heat pump.
The utility model steam power plant directly reclaims the heating system of subsidiary engine condensation waste heat; The heat supply network backwater is introduced into second water-cooled condenser after getting into steam power plant; Be further divided into two the tunnel after going out second water-cooled condenser; One road heat supply network backwater is introduced into each absorption heat pump of serial connection behind the absorber of first absorption heat pump, and another road heat supply network backwater parallel connection gets into the subcooler of each absorption heat pump.
The utility model steam power plant directly reclaims the heating system of subsidiary engine condensation waste heat; The subcooler of said each absorption heat pump is merged into a subcooler; The water as refrigerant pipeline parallel connection of each absorption heat pump inserts the subcooler after this merging, and subcooler and another road heat supply network backwater that the heat supply network backwater goes out after this merging merge at last.
The beneficial effect of the utility model is:
Absorption heat pump in steam power plant has increased when subcooler and water-cooled condenser supply heat supply in winter to do heat supply season and has moved.Heat supply network recirculated water and power plant's cool cycles water separation isolated operation.Guaranteed the water quality of hot net water, guaranteed that all kinds of heat transmission equipments can safe and reliable energy-efficient operation.And because heat supply network backwater and condensing direct heat transfer, compare with employing cellular-type heat-exchange system and can reclaim used heat more.Adopt heat supply network recirculated water directly to reclaim the COP value that the heat pump waste heat has more effectively improved heat pump.The working steam of heat pump will be practiced thrift more than 8% than original system.Because heat pump has been used high-grade energy less in reclaiming steam power plant's condensation waste heat process; So compare with former heat pump; Under the situation that reclaims same condensation waste heat; The temperature that goes out heat pump is lower than originally, can guarantee that so more heat supply network reclaims condenser heat and realizes maximization when heating demand descends, and is utilizing more auxiliary steam turbine exhaust steam to be used for heating in whole heating season.On the other hand, owing to reclaim same condensation heat, the circulating water temperature that goes out heat pump is low, under same outlet temperature situation, and the recyclable more condensation waste heat of heat pump.Flow through heat supply network recirculated water and auxiliary steam turbine exhaust steam corresponding series and parallel in the absorber condenser of each heat pump and evaporimeter, make the performance of heat pump obtain better optimize.The volume of heat pump, weight indicator can descend greatly, and manufacturing cost can descend simultaneously.On the other hand, because the performance optimization of heat pump, each item economic technology economic indicator of steam power plant is further enhanced.
Description of drawings
The heat supply network backwater that Fig. 1 (a) relates to for the utility model is shunted before second water-cooled condenser and subsidiary engine exhaust steam parallel connection gets into the evaporator with heat pump sketch map.
The heat supply network backwater that Fig. 1 (b) relates to for the utility model is shunted behind second water-cooled condenser and subsidiary engine exhaust steam parallel connection gets into the evaporator with heat pump sketch map.
Reference numeral among the figure:
Auxiliary steam turbine 1, first water-cooled condenser (former) 2, second water-cooled condenser (increasing newly) 3, subcooler 4, outlet pipe 5, cooling device 6, heat supply network return branch 7, heat supply network return branch 8, vapor-water heat exchanger 9, main steam turbine extraction steam pipe 10, auxiliary steam turbine exhaust steam pipe 11, auxiliary steam turbine exhaust steam pipe 12, auxiliary steam turbine exhaust steam pipe 13, absorption heat pump XR1 ... N.
Heat supply network backwater A, heat supply network water supply A2, main steam turbine draw gas B, high steam C, coagulate water and go out D.The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Shown in Fig. 1 (a), the heat supply network backwater that Fig. 1 (a) relates to for the utility model is shunted before second water-cooled condenser and subsidiary engine exhaust steam parallel connection gets into the evaporator with heat pump sketch map.Can find out that by Fig. 1 (a) heating system is by auxiliary steam turbine 1, first water-cooled condenser (former) 2, second water-cooled condenser (increasing newly) 3, subcooler 4, outlet pipe 5, cooling device 6, heat supply network return branch 7, heat supply network return branch 8, vapor-water heat exchanger 9, main steam turbine extraction steam pipe 10, auxiliary steam turbine exhaust steam pipe 11, auxiliary steam turbine exhaust steam pipe 12, auxiliary steam turbine exhaust steam pipe 13, absorption heat pump XR1 ... Compositions such as n and water pump, valve and connecting line.Said absorption heat pump XR1 ... N has the n platform, and n is >=2 natural number.The heat supply network backwater is divided into two the tunnel after getting into power plant: heat supply network return branch 7 and heat supply network return branch 8; One road heat supply network backwater inserts second water-cooled condenser 3, goes out the absorber that second water-cooled condenser 3 back heat supply network return branch 7 get into first absorption heat pump XR1, goes out the absorber that gets into second absorption heat pump XR2 behind the absorber of first absorption heat pump XR1; All the other and the like;, go out the absorber that gets into n platform absorption heat pump XRn behind the absorber of n-1 platform absorption heat pump again, get into the condenser of n platform absorption heat pump XRn again; Get into the condenser of n-1 platform absorption heat pump XR2 then; All the other and the like ..., after the condenser of first absorption heat pump XR1 go out.Just get into the condenser of absorption heat pump XR2 after the minimum absorber from absorption heat pump XR2 of this one road hot net water goes out, go out the condenser that returns absorption heat pump XR1 behind the condenser of absorption heat pump XR2, the condenser from absorption heat pump XR1 goes out at last.This road heat supply network backwater is heated through second water-cooled condenser 3; Again through first absorption heat pump XR1, second absorption heat pump XR2 ... The absorber of n platform absorption heat pump XRn add gentle n platform absorption heat pump XRn ... The condenser of second absorption heat pump XR2, first absorption heat pump XR1 is heated, and the heat supply network return water temperature is raise.Another road heat supply network return branch 8 directly parallel connection gets into each absorption heat pump XR1 ... The subcooler 4 of n.Heat exchange heats up in subcooler 4, has taken away the heat of absorption heat pump condensation water as refrigerant, and the heat of the water as refrigerant that the heat pump generator produces has obtained effective utilization.Two road heat supply network backwater merge at last, directly or again after vapor-water heat exchanger 9 heats up, see off.Because water as refrigerant cooling back gets into evaporimeter; Basically eliminated the liquid state loss that water as refrigerant gets into behind the evaporimeter self flash distillation cooling; Make water as refrigerant can all be used for refrigeration, the COP value of heat pump is improved, reached the effect that one action two gets cooling circulating water.Auxiliary steam turbine 1 exhaust steam is divided into three the tunnel: auxiliary steam turbine exhaust steam pipe 13 parallel connections of leading up to insert each absorption heat pump XR1 ... The evaporimeter of n condenses into the water outflow and gathers after the heat release.Evaporimeter is directly advanced in exhaust steam, has reduced the thermal loss of intermediate conversion, helps the lifting of heat pump efficiency; Second water-cooled condenser 3 is inserted through auxiliary steam turbine exhaust steam pipe 12 in another road; The cooling circulating water discharge that the auxiliary steam turbine exhaust steam pipe 11 of leading up in addition inserts first water-cooled condenser, 2, the first water-cooled condensers 2 enters atmosphere to unnecessary heat through cooling device 6.In this system heat supply network recirculated water and auxiliary steam turbine exhaust steam two at the most the series and parallel in the platform heat pump flow and make the performance of heat pump obtain optimization, each item technical-economic index of power plant's cogeneration operation is further improved.
Shown in Fig. 1 (b), the heat supply network backwater that Fig. 1 (b) relates to for the utility model is shunted behind second water-cooled condenser and subsidiary engine exhaust steam parallel connection gets into the evaporator with heat pump sketch map.Fig. 1 (b) is behind second water-cooled condenser, to be divided into two the tunnel after the heat supply network backwater gets into power plant with Fig. 1 (a) difference.
Described heat supply network backwater also can carry out heat exchange with a shared subcooler (not drawing among the figure) of many heat pumps.The water as refrigerant pipeline of each heat pump (not drawing among the figure) is connected in parallel with subcooler, through backheat pump after the subcooler heat release.After heating up in subcooler, the heat supply network backwater merges with another road.
Claims (4)
1. a steam power plant directly reclaims the heating system of subsidiary engine condensation waste heat; Comprise auxiliary steam turbine (1), first water-cooled condenser (2), vapor-water heat exchanger (9) and absorption heat pump (XR1 ... N); Said absorption heat pump (XR1 ... N) the n platform is arranged; N is >=2 natural number, it is characterized in that: said absorption heat pump (XR1 ... N) have additional subcooler (4), the increase of said system has one second water-cooled condenser (3); The heat supply network backwater is divided into the absorber that two tunnel: one road heat supply network backwater is introduced into first absorption heat pump (XR1) before or after entering power plant; The absorber that gets into second absorption heat pump (XR2) again is connected in series successively, and until the aspirator that gets into n platform absorption heat pump (XRn), the aspirator that goes out n platform absorption heat pump (XRn) gets into the condenser of this n platform absorption heat pump (XRn) again; Be connected in series successively from n-1, n-2 then, the condenser from first absorption heat pump (XR1) goes out at last; Another road heat supply network backwater parallel connection gets into each absorption heat pump (XR1 ... N) subcooler (4); Two road heat supply network backwater merge at last; Directly or again behind vapor-water heat exchanger (9), see off; Auxiliary steam turbine (1) exhaust steam is divided into three tunnel: one road auxiliary steam turbine exhaust steam parallel connection and inserts each absorption heat pump (XR1 ... N) evaporimeter, another road auxiliary steam turbine exhaust steam inserts second water-cooled condenser (3); Also have one road auxiliary steam turbine exhaust steam to insert first water-cooled condenser (2), the cooling circulating water of first water-cooled condenser (2) is discharged the cooling device (6) that inserts steam power plant.
2. a kind of steam power plant according to claim 1 directly reclaims the heating system of subsidiary engine condensation waste heat; It is characterized in that: the heat supply network backwater gets into and to be divided into two tunnel: one road heat supply network backwater earlier after the steam power plant and to get into second water-cooled condenser (3), goes out the absorber that gets into first absorption heat pump (XR1) behind second water-cooled condenser (3) again; Another road heat supply network backwater does not get into second water-cooled condenser (3) and directly parallelly connected each absorption heat pump (XR1 that gets into ... N) subcooler (4).
3. a kind of steam power plant according to claim 1 directly reclaims the heating system of subsidiary engine condensation waste heat; It is characterized in that: the heat supply network backwater is introduced into second water-cooled condenser (3) after getting into steam power plant; Be further divided into two the tunnel after going out second water-cooled condenser (3); One road heat supply network backwater is introduced into serial connection each absorption heat pump (XRn) behind the absorber of first absorption heat pump (XR1), and another road heat supply network backwater parallel connection gets into each absorption heat pump (XR1 ... N) subcooler (4).
4. directly reclaim the heating system of subsidiary engine condensation waste heat according to claim 1 or 2 or 3 described a kind of steam power plants; It is characterized in that: said each absorption heat pump (XR1 ... N) subcooler (4) is merged into a subcooler; Each absorption heat pump (XR1 ... N) water as refrigerant pipeline parallel connection inserts the subcooler after this merging, and subcooler and another road heat supply network backwater that the heat supply network backwater goes out after this merging merge at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120250844 CN202221122U (en) | 2011-07-16 | 2011-07-16 | Heat supply system directly recycling condensation waste heat of auxiliary machine in thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120250844 CN202221122U (en) | 2011-07-16 | 2011-07-16 | Heat supply system directly recycling condensation waste heat of auxiliary machine in thermal power plant |
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| Publication Number | Publication Date |
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| CN202221122U true CN202221122U (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120250844 Withdrawn - After Issue CN202221122U (en) | 2011-07-16 | 2011-07-16 | Heat supply system directly recycling condensation waste heat of auxiliary machine in thermal power plant |
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| CN (1) | CN202221122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338407A (en) * | 2011-07-16 | 2012-02-01 | 双良节能系统股份有限公司 | Heat supply system for directly recycling condensate waste heat of auxiliary machine in thermal power plant |
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2011
- 2011-07-16 CN CN 201120250844 patent/CN202221122U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338407A (en) * | 2011-07-16 | 2012-02-01 | 双良节能系统股份有限公司 | Heat supply system for directly recycling condensate waste heat of auxiliary machine in thermal power plant |
| CN102338407B (en) * | 2011-07-16 | 2013-03-27 | 双良节能系统股份有限公司 | Heat supply system for directly recycling condensate waste heat of auxiliary machine in thermal power plant |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120516 Effective date of abandoning: 20130327 |
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| RGAV | Abandon patent right to avoid regrant |