CN202141114U - Vapor-water type heating system of thermal power plant - Google Patents
Vapor-water type heating system of thermal power plant Download PDFInfo
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- CN202141114U CN202141114U CN201120257212U CN201120257212U CN202141114U CN 202141114 U CN202141114 U CN 202141114U CN 201120257212 U CN201120257212 U CN 201120257212U CN 201120257212 U CN201120257212 U CN 201120257212U CN 202141114 U CN202141114 U CN 202141114U
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- heat pump
- absorption heat
- water
- power plant
- supply network
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The utility model relates to a vapor-water type heating system of a thermal power plant, which comprises an extraction condensing turbine (1), a first water-cooling condenser (5), a vapor-water heat exchanger (9), and absorption heat pumps (XR1....XRn). Subcoolers (7) are additionally arranged on the absorption heat pumps (XR1...XRn); a second water-cooling condenser (6) is additionally arranged on the system; and the heat supply network backwater of the thermal power plant is divided into two paths after entering into the thermal power plant, wherein one path enters into the absorber of the first absorption heat pump (XR1), then the absorber of the second absorption heat pump (XR2)...at last the absorber of the last absorption heat pump (XRn), in a sequentially series connection manner, then comes out of the absorber of the last absorption heat pump (XRn), and enters into the condenser of the last absorption heat pump (XRn); and the other path enters into the subcoolers (7) of all the absorption heat pumps. The two paths of the heat supply network backwater are combined at last, and then sent out directly or sent out after being heated. The vapor-water type heating system can reclaim more condensation waste heat of the thermal power plant, so as to improve the running efficiency of the heat pumps and lead the heat supply network system to run more reliably.
Description
Technical field
The utility model relates to a kind of cogeneration heating system, is applicable to that the exhaust steam of cogeneration power plant steam turbine 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 turbine discharge 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, and a kind of condensation waste heat of realizing reclaiming more steam power plants is provided, and the operational efficiency of raising heat pump and heat network system be steam power plant's carbonated drink formula heating system of reliability service more.
The purpose of the utility model is achieved in that a kind of steam power plant carbonated drink formula heating system; Comprise sucking condensing turbine, extracted steam from turbine pipe, 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.Exhaust steam in steam turbine condenses into water by condenser, and condensation waste heat is recycled.Said absorption heat pump has additional subcooler; The increase of said system has one second water-cooled condenser; Steam power plant's 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 after getting into power plant; Get into the absorber of second absorption heat pump again ... Be connected in series successively, until the absorber that gets into n platform absorption heat pump, the absorber that goes out n platform absorption heat pump gets into the condenser of this n platform absorption heat pump again; Then from n-1, n-2 ... Be connected in series successively, the condenser from first absorption heat pump flows out at last; Another road heat supply network backwater parallel connection gets into the subcooler of each absorption heat pump, and two road heat supply network backwater merge at last, directly or again behind vapor-water heat exchanger, see off; The evaporimeter recirculated water of second water-cooled condenser goes out the evaporimeter that is introduced into n platform absorption heat pump behind said second water-cooled condenser; Return successively then; Get into the evaporimeter of second absorption heat pump, first absorption heat pump at last, after the evaporimeter outflow of first absorption heat pump, return second condenser; The cool cycles water discharge pipe of first water-cooled condenser and the cooling system of steam power plant are connected.
The utility model steam power plant carbonated drink formula heating system, the cooling system of said steam power plant are cooling tower, air cooling device or a device for cooling.The cooling system of steam power plant can be that air and this first water-cooled condenser go out water direct heat-exchange, also can be that the air and the first water-cooled condenser water outlet indirect heat exchange enter atmosphere with heat.
The utility model steam power plant carbonated drink formula heating system; 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.
This steam power plant carbonated drink formula heating system also is applicable to an air cooling power plant and a cold power plant.
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 cooling circulating water 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 exhaust steam in steam turbine 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.Through heat supply network recirculated water and cooling circulating water corresponding series flow in the absorber of each heat pump and condenser 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 sketch map that the heat supply network backwater is directly shunted and evaporator with heat pump recirculated water circulates through second water-cooled condenser that Fig. 1 relates to for the utility model.
Reference numeral among the figure:
Sucking condensing turbine 1, generator 2, extracted steam from turbine pipe 3, coagulate water pipe 4, first water-cooled condenser 5 (former), second water-cooled condenser 6 (increasing newly), subcooler 7, cool cycles water discharge pipe 8, vapor-water heat exchanger 9, heat supply network return branch 10, heat supply network return branch 11, cooling tower 12, air cooling device 13, a device for cooling 14, evaporimeter circulating water pipe 15, absorption heat pump XR1 ... N.
Heat supply network backwater A, heat supply network water supply A2, high steam B, exhaust steam in steam turbine C, coagulate water and go out D.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
The sketch map that the heat supply network backwater is directly shunted and evaporator with heat pump recirculated water circulates through second water-cooled condenser as shown in Figure 1, that Fig. 1 relates to for the utility model.Can find out by Fig. 1, heating system by sucking condensing turbine 1, generator 2, extracted steam from turbine pipe 3, coagulate water pipe 4, first water-cooled condenser 5 (former), second water-cooled condenser 6 (increasing newly), subcooler 7, cool cycles water discharge pipe 8, vapor-water heat exchanger 9, heat supply network return branch 10, heat supply network return branch 11, cooling tower 12, air cooling device 13, a device for cooling 14, evaporimeter circulating water pipe 15, 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 10 and heat supply network return branch 11.One road heat supply network return branch 10 gets into the absorber of first absorption heat pump XR1; Go 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 XR2 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 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 11 directly parallel connection gets into each absorption heat pump XR1 ... The subcooler 7 of n.Heat exchange heats up in subcooler 7, 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.The evaporimeter recirculated water of second water-cooled condenser 6 of steam power plant after heating as the low-temperature heat source of heat pump; The evaporimeter circulating water pipe 15 that goes out said second water-cooled condenser 6 is introduced into the evaporimeter of n platform absorption heat pump XRn; Return successively then; Get into the evaporimeter of second absorption heat pump XR2, first absorption heat pump XR1, heat again from returning second condenser 6 after first absorption heat pump XR1 flows out at last.The first water-cooled condenser cool cycles water discharge pipe 8 is connected with a cooling tower 12 or a device for cooling 14, enters atmosphere to unnecessary heat.Direct Air-Cooled power plant second water-cooled condenser 6 links to each other with the admission pipeline of air cooler, a part of second water-cooled condenser 6 that gets into of exhaust steam in steam turbine, a part of air cooler that gets into.In this system heat supply network recirculated water and cooling circulating water two at the most the series flow in the platform heat pump make the performance of heat pump obtain optimization, each item technical-economic index of power plant's cogeneration operation is further improved.
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 (3)
1. steam power plant's carbonated drink formula heating system; Comprise sucking condensing turbine (1), extracted steam from turbine pipe (3), first water-cooled condenser (5), 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 (7), the increase of said system has one second water-cooled condenser (6); Steam power plant's 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) after getting into power plant; Get into the absorber of second absorption heat pump (XR2) again ... Be connected in series successively, until the absorber that gets into n platform absorption heat pump (XRn), the absorber that goes out n platform absorption heat pump (XRn) gets into the condenser of this n platform absorption heat pump (XRn) again; Then from n-1, n-2 ... Be connected in series successively, the condenser from first absorption heat pump (XR1) flows out at last; Another road heat supply network backwater parallel connection gets into each absorption heat pump (XR1 ... N) subcooler (7), two road heat supply network backwater merge at last, directly or again behind vapor-water heat exchanger (6), see off; The evaporimeter recirculated water of second water-cooled condenser (6) goes out the evaporimeter that is introduced into n platform absorption heat pump (XRn) behind said second water-cooled condenser (6); Return successively then; Get into the evaporimeter of second absorption heat pump (XR2), first absorption heat pump (XR1) at last, after the evaporimeter outflow of first absorption heat pump (XR1), return second condenser (6); The cool cycles water discharge pipe (8) of first water-cooled condenser (5) and the cooling system of steam power plant are connected.
2. a kind of steam power plant according to claim 1 carbonated drink formula heating system is characterized in that: the cooling system of said steam power plant is cooling tower (12), air cooling device (13) or a device for cooling (14).
3. a kind of steam power plant according to claim 1 and 2 carbonated drink formula heating system; It is characterized in that: said each absorption heat pump (XR1 ... N) subcooler (7) 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 |
|---|---|---|---|
| CN201120257212U CN202141114U (en) | 2011-07-20 | 2011-07-20 | Vapor-water type heating system of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120257212U CN202141114U (en) | 2011-07-20 | 2011-07-20 | Vapor-water type heating system of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141114U true CN202141114U (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120257212U Withdrawn - After Issue CN202141114U (en) | 2011-07-20 | 2011-07-20 | Vapor-water type heating system of thermal power plant |
Country Status (1)
| Country | Link |
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| CN (1) | CN202141114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345895A (en) * | 2011-07-20 | 2012-02-08 | 双良节能系统股份有限公司 | Steam-water heating system for thermal power plant |
-
2011
- 2011-07-20 CN CN201120257212U patent/CN202141114U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345895A (en) * | 2011-07-20 | 2012-02-08 | 双良节能系统股份有限公司 | Steam-water heating system for thermal power plant |
| CN102345895B (en) * | 2011-07-20 | 2013-06-05 | 双良节能系统股份有限公司 | Steam-water heating system for thermal power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120208 Effective date of abandoning: 20130605 |
|
| RGAV | Abandon patent right to avoid regrant |