CN202228142U - Water-water heating system capable of recycling waste heat of absorption heat pump in thermal power plant - Google Patents
Water-water heating system capable of recycling waste heat of absorption heat pump in thermal power plant Download PDFInfo
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- CN202228142U CN202228142U CN 201120268733 CN201120268733U CN202228142U CN 202228142 U CN202228142 U CN 202228142U CN 201120268733 CN201120268733 CN 201120268733 CN 201120268733 U CN201120268733 U CN 201120268733U CN 202228142 U CN202228142 U CN 202228142U
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- water
- heat pump
- absorption heat
- absorption
- heating system
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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]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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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
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
The utility model relates to a water-water heating system capable of recycling waste heat of an absorption heat pump in a thermal power plant. The heating system comprises an extraction condensing steam turbine (1), a steam turbine extraction steam pipe (3), a water-cooling condenser (5), a water-water heat exchanger (6), subcoolers (7), an aerated water heat exchanger (9) and n absorption heat pumps, wherein the backwater of a heat supply network enters a thermal power plant so as to be in parallel connection with the subcooler (7) of each absorption heat pump (XR1...n) through parallel connection, and then enters an absorber of a first absorption heat pump (XR1) through the water-water heat exchanger (6) so as to be connected in series with each absorption heat pump (XR1...n), the backwater of the heat supply network leaves the absorber of the nth absorption heat pump (XRn) so as to reenter the condenser of the nth absorption heat pump (XRn) and then is connected in series with the condenser of each absorption heat pump (XRn...1), and the backwater of the heat supply network is directly sent out or is sent out after being heated. The heating system provided by the utility model has the advantages of recovering more condensing waste heat of the thermal power plant, improving the operating efficiency of each heat pump, and enabling a heat supply network system to operate 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 technique
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 heat supply, to substitute original independent boiler central heat supply, realizes the requirement of energy-saving and emission-reduction.Make full use of thermoelectricity plant's used heat, to improve the heat capacity of thermoelectricity plant, realize energy-saving and emission-reduction better, guarantee the safe and reliable operation of thermoelectricity 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 heat pump unit 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 vapour condenser after, get into absorption heat pump again, see off after in heat pump, heating up.In this system, the temperature that circulating water goes out heat pump is the keys of heat supply network in many recovery of whole heating season heat of condensation, in same outlet temperature, can reclaim more condensation waste heat, and become the another difficult problem of thermoelectricity plant's central heat supply 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 thermoelectricity plants is provided, and the operational efficiency of raising heat pump and the heat network system more thermoelectricity plant of reliable operation reclaim absorption heat pump remaining hot water ability of swimming heating system.
The purpose of the utility model is achieved in that a kind of thermoelectricity plant reclaims absorption heat pump remaining hot water ability of swimming heating system; Comprise sucking condensing turbine, extracted steam from turbine pipe, water-cooled condenser, vapor-water heat exchanger and absorption heat pump; Said absorption heat pump has the n platform, and n is >=2 natural number.High pressure 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 vapour condenser, and condensation waste heat is recycled.It is characterized in that: described absorption heat pump has additional subcooler, in thermoelectricity plant, increases a water water-to-water heat exchanger and former water-cooled condenser cooperation.The heat supply network backwater gets into the parallelly connected subcooler that gets into each absorption heat pump after the thermoelectricity plant; Gather after the outflow and get into the water water-to-water heat exchanger; Be introduced into the adsorber of first absorption heat pump after heating up once more, get into the adsorber of second absorption heat pump again ... Be connected in series successively, until the adsorber that gets into n platform absorption heat pump; Go out the condenser that gets into this n platform absorption heat pump behind the adsorber of n platform absorption heat pump again; Then from n-1, n-2 ... Be connected in series successively, from the condenser of first absorption heat pump, flow out at last, directly or again behind vapor-water heat exchanger, see off.The cool cycles water out of said water-cooled condenser is divided into three the road or two the tunnel, get into respectively absorption heat pump vaporizer, water water-to-water heat exchanger and thermoelectricity plant cooling system or get into the former two respectively.The cooling system of thermoelectricity plant can be that air and this water-cooled condenser go out water direct heat-exchange, also can be that air and water-cooled condenser water outlet indirect exchange enter atmosphere with heat.
A kind of thermoelectricity plant of the utility model reclaims absorption heat pump remaining hot water ability of swimming heating system; The subcooler of said each absorption heat pump is merged into a subcooler; The cryogen water pipeline parallel connection of each absorption heat pump inserts the subcooler after this merging, and the heat supply network backwater goes out the laggard entry water-to-water heat exchanger of subcooler after this merging.
A kind of thermoelectricity plant of the utility model reclaims absorption heat pump remaining hot water ability of swimming heating system; The cooling circulating water of said water-cooled condenser be divided into three the tunnel: the one tunnel be introduced into n platform absorption heat pump vaporizer; Return successively then; Get into the vaporizer of second, first absorption heat pump, from the vaporizer of first absorption heat pump, go out at last, return water-cooled condenser; Another road gets into the circulation of water water-to-water heat exchanger; Third Road gets into the cooling system of thermoelectricity plant.
A kind of thermoelectricity plant of the utility model reclaims absorption heat pump remaining hot water ability of swimming heating system; The cool cycles water out of said water-cooled condenser is divided into two the tunnel; One the tunnel is introduced into the vaporizer of n platform absorption heat pump, returns successively then, gets into the vaporizer of second, first absorption heat pump; From the vaporizer of first absorption heat pump, go out at last, and then get into the cooling system of thermoelectricity plant; Another road gets into the circulation of water water-to-water heat exchanger.
A kind of thermoelectricity plant of the utility model reclaims absorption heat pump remaining hot water ability of swimming heating system, and the cooling system of said thermoelectricity plant is a cooling tower or a device for cooling.
A kind of thermoelectricity plant of the utility model reclaims absorption heat pump remaining hot water ability of swimming heating system, and described absorption heat pump is a separate unit multi-section type absorption heat pump.
Cold power plant between this thermoelectricity plant recovery absorption heat pump remaining hot water ability of swimming heating system also is applicable to.
The beneficial effect of the utility model is:
Absorption heat pump in thermoelectricity plant has increased when subcooler and water water-to-water heat exchanger supply heat supply in winter to do heat supply season and has moved.Heat supply network circulating 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 separated type heat-exchange system and can reclaim used heat more.Adopt heat supply network circulating 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 thermoelectricity 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 heat of condensation, 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 circulating water and cooling circulating water corresponding series flow in adsorber, condenser and the vaporizer of each heat pump, make the performance of heat pump obtain better optimize.The volume of heat pump, weight indicator can descend greatly, and manufacture cost can descend simultaneously.On the other hand, because the performance optimization of heat pump, each item economic technology economic indicator of thermoelectricity plant is further enhanced.
Description of drawings
The heat supply network backwater that Fig. 1 (a) relates to for the utility model directly advances heat pump subcooler and cooling circulating water three circulation schematic representation.
The heat supply network backwater that Fig. 1 (b) relates to for the utility model directly advances heat pump subcooler and cooling circulating water bigeminy circulation schematic representation.
Reference character among the figure:
Sucking condensing turbine 1, generator 2, extracted steam from turbine pipe 3, coagulate water pipe 4, water-cooled condenser 5 (former), water water-to-water heat exchanger 6 (increasing newly), subcooler 7, cool cycles water discharge pipe 8, vapor-water heat exchanger 9, heat supply network return branch 10, cooling tower 11, a device for cooling 12, absorption heat pump XR1 ... N.
Heat supply network backwater A1, heat supply network water supply A2, high pressure steam B, exhaust steam in steam turbine C, coagulate water and go out D.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Embodiment 1:
Shown in Fig. 1 (a), the heat supply network backwater that Fig. 1 (a) relates to for the utility model directly advances heat pump subcooler and cooling circulating water three circulation schematic representation.Can find out by Fig. 1 (a), thermoelectricity plant reclaim absorption heat pump remaining hot water ability of swimming heating system by sucking condensing turbine 1, generator 2, extracted steam from turbine pipe 3, coagulate water pipe 4, water-cooled condenser 5, water water-to-water heat exchanger 6, subcooler 7, cool cycles water discharge pipe 8, vapor-water heat exchanger 9, heat supply network return branch 10, cooling tower 11, a device for cooling 12, absorption heat pump XR1 ... Compositions such as n and water pump, valve and connecting pipeline.Said absorption heat pump XR1 ... N has the n platform, and n is >=2 natural number.Parallel connection got into each absorption heat pump XR1 after heat supply network return branch 10 got into power plant ... The subcooler 7 of n; Gather after the intensification and get into water water-to-water heat exchanger 6, the back of heating up once more gets into the adsorber of first absorption heat pump XR1, goes out the adsorber that gets into second absorption heat pump XR2 behind the adsorber of first absorption heat pump XR1; All the other and the like;, go out the adsorber that gets into n platform absorption heat pump XRn behind the adsorber 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 adsorber 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 subcooler 7, water water-to-water heat exchanger 6; Again through first absorption heat pump XR1, second absorption heat pump XR2 ... The adsorber 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; The heat supply network return water temperature is raise, directly or again after vapor-water heat exchanger 9 heats up, see off.The heat exchange in subcooler 7 of this one road heat supply network backwater heats up, and has taken away the heat of absorption heat pump condensation cryogen water, and the heat of the cryogen water that the heat pump generator produces has obtained effective utilization.Because cryogen water cooling back gets into vaporizer; Basically eliminated the liquid state loss that cryogen water gets into behind the vaporizer self flash distillation cooling; Make cryogen water 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.Cool cycles water discharge pipes 8 in the water-cooled condenser 5 of thermoelectricity plant be divided into three the tunnel: the one tunnel be introduced into n platform absorption heat pump XRn vaporizer; Return successively then; Get into the vaporizer of second absorption heat pump XR2, first absorption heat pump XR1, heat again from returning water-cooled condenser 5 after the vaporizer of first absorption heat pump XR1 flows out at last.Another road gets into water water-to-water heat exchanger 6, returns water-cooled condenser 5 behind the heating heat supply network backwater and heats.Third Road enters atmosphere to unnecessary heat through a cooling tower 11 or a device for cooling 12.In this system heat supply network circulating 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.
Embodiment 2:
Shown in Fig. 1 (b), the heat supply network backwater that Fig. 1 (b) relates to for the utility model directly advances heat pump subcooler and cooling circulating water bigeminy circulation schematic representation.Fig. 1 (b) is the circulation of cooling circulating water bigeminy 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 cryogen water 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 (6)
1. a thermoelectricity plant reclaims absorption heat pump remaining hot water ability of swimming heating system; Comprise sucking condensing turbine (1), extracted steam from turbine pipe (3), 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 a water water-to-water heat exchanger (6); The parallel connection after getting into thermoelectricity plant of heat supply network backwater gets into each absorption heat pump (XR1 ... N) subcooler (7); Gathering after the outflow connects gets into the adsorber of water water-to-water heat exchanger (6) and first absorption heat pump (XR1), gets into the adsorber of second absorption heat pump (XR2) again ... Be connected in series successively, until the adsorber that gets into n platform absorption heat pump (XRn); Go out the condenser that gets into this n platform absorption heat pump (XRn) behind the adsorber of n platform absorption heat pump (XRn) again; Then from n-1, n-2 ... Be connected in series successively, from the condenser of first absorption heat pump (XR1), go out at last, directly or again behind vapor-water heat exchanger (9), see off; The cooling circulating water of said water-cooled condenser (5) is divided into three the road or two the tunnel after going out said water-cooled condenser (5), get into respectively absorption heat pump (XRn) vaporizer, water water-to-water heat exchanger (6) and thermoelectricity plant cooling system or get into the former two respectively.
2. a kind of thermoelectricity plant according to claim 1 reclaims absorption heat pump remaining hot water ability of swimming 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) cryogen water pipeline parallel connection inserts the subcooler after this merging, and the heat supply network backwater goes out the laggard entry water-to-water heat exchanger of subcooler (6) after this merging.
3. a kind of thermoelectricity plant according to claim 1 and 2 reclaims absorption heat pump remaining hot water ability of swimming heating system; It is characterized in that: the cooling circulating water of said water-cooled condenser (5) be divided into three the tunnel: the one tunnel be introduced into n platform absorption heat pump (XRn) vaporizer; Return successively then; Get into the vaporizer of second, first absorption heat pump, from the vaporizer of first absorption heat pump (XR1), go out at last, return water-cooled condenser (5); Another road gets into water water-to-water heat exchanger (6) circulation; Third Road gets into the cooling system of thermoelectricity plant.
4. a kind of thermoelectricity plant according to claim 1 and 2 reclaims absorption heat pump remaining hot water ability of swimming heating system; It is characterized in that: the cool cycles water out of said water-cooled condenser (5) is divided into two the tunnel; One the tunnel is introduced into the vaporizer of n platform absorption heat pump (XRn), returns successively then, gets into the vaporizer of second, first absorption heat pump; From the vaporizer of first absorption heat pump (XR1), go out at last, and then get into the cooling system of thermoelectricity plant; Another road gets into water water-to-water heat exchanger (6) circulation.
5. a kind of thermoelectricity plant according to claim 1 reclaims absorption heat pump remaining hot water ability of swimming heating system, and it is characterized in that: the cooling system of said thermoelectricity plant is a cooling tower (11) or a device for cooling (12).
6. a kind of thermoelectricity plant according to claim 1 reclaims absorption heat pump remaining hot water ability of swimming heating system, and it is characterized in that: described absorption heat pump is a separate unit multi-section type absorption heat pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120268733 CN202228142U (en) | 2011-07-27 | 2011-07-27 | Water-water heating system capable of recycling waste heat of absorption heat pump in thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120268733 CN202228142U (en) | 2011-07-27 | 2011-07-27 | Water-water heating system capable of recycling waste heat of absorption heat pump in thermal power plant |
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| Publication Number | Publication Date |
|---|---|
| CN202228142U true CN202228142U (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120268733 Withdrawn - After Issue CN202228142U (en) | 2011-07-27 | 2011-07-27 | Water-water heating system capable of recycling waste heat of absorption heat pump in thermal power plant |
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| CN (1) | CN202228142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331029A (en) * | 2011-07-27 | 2012-01-25 | 双良节能系统股份有限公司 | Water-water type heating system for recovering waste heat in absorption heat pumps in heat power plant |
-
2011
- 2011-07-27 CN CN 201120268733 patent/CN202228142U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331029A (en) * | 2011-07-27 | 2012-01-25 | 双良节能系统股份有限公司 | Water-water type heating system for recovering waste heat in absorption heat pumps in heat power plant |
| CN102331029B (en) * | 2011-07-27 | 2013-03-27 | 双良节能系统股份有限公司 | Water-water type heating system for recovering waste heat in absorption heat pumps in heat 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: 20120523 Effective date of abandoning: 20130327 |
|
| RGAV | Abandon patent right to avoid regrant |