CN204492910U - A kind of exhaust steam residual heat reclaiming system based on absorption heat pump technology - Google Patents

A kind of exhaust steam residual heat reclaiming system based on absorption heat pump technology Download PDF

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Publication number
CN204492910U
CN204492910U CN201420848126.XU CN201420848126U CN204492910U CN 204492910 U CN204492910 U CN 204492910U CN 201420848126 U CN201420848126 U CN 201420848126U CN 204492910 U CN204492910 U CN 204492910U
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China
Prior art keywords
pump
heat
water
vapour condenser
supply network
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Expired - Fee Related
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CN201420848126.XU
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Chinese (zh)
Inventor
刘军
尤丽
朱蒙
胡永逵
郭占强
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Beijing Huayu energy technology Limited by Share Ltd
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Beijing Zhongke Huayu Energy Technology Development Co Ltd
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Priority to CN201420848126.XU priority Critical patent/CN204492910U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52Heat 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Abstract

The utility model relates to a kind of exhaust steam residual heat reclaiming system based on absorption heat pump technology, belong to residual heat of electric power plant and reclaim field, this system comprises steam turbine, vapour condenser, condensate pump, and lithium bromide absorption type heat pump, circulation pump of heat-supply network, waste heat circulation water pump and circulating water pipeline are formed; The steam inlet of vapour condenser is connected with high temperature and high pressure steam pipeline by steam turbine, and the water of condensation outlet of vapour condenser is connected with main condensate pipeline by condensate pump; The bleeding point of steam turbine is connected with condensing water conduit by the high-pressure generator of lithium bromide absorption type heat pump; The heat supply network heated side entrance of vapour condenser is connected with heating water return pipeline by circulation pump of heat-supply network; The outlet of the heat supply network heated side of vapour condenser is connected with heat supply network water supply line by the heated side of lithium bromide absorption type heat pump; The vaporizer of lithium bromide absorption type heat pump is connected to circulation waterway by the cooling water side of waste heat circulation water pump and vapour condenser.The utility model can save the energy, emissions reduction, improves the utilization ratio of primary energy.

Description

A kind of exhaust steam residual heat reclaiming system based on absorption heat pump technology
Technical field
The utility model belongs to residual heat of electric power plant and reclaims field, particularly a kind of exhaust steam residual heat reclaiming system based on absorption heat pump technology.
Background technique
In the main heating system in northern cities and towns, cogeneration of heat and power, because unit heating coal consumption is far below region boiler and all kinds of dispersion heating system, is the heat resource form that energy conversion efficiency generally acknowledged is at present the highest.At present, power plant heating system have two kinds of modes, the first utilizes the mode of the direct heating circulating water that draws gas of steam turbine, this kind of mode utilizes the low-pressure pumping steam of turbine low pressure cylinder directly to heat heat supply network circulating water by vapor-water heat exchanger, this kind of mode has the advantages that heating temperature is higher, supply backwater temperature difference large and heating service Area comparison is large, be applicable to large, medium and small sucking condensing turbine, adopt some the exhaust steam heat of condensation of this kind of mode to be lost in air eventually through cooling water; It two is adopt the mode of low vacuum heating, this kind of mode improves exhaust steam pressure and the temperature of steam turbine, utilize the steam discharge of steam turbine directly by vapour condenser heating heat supply network circulating water, this kind of mode is applicable to that a secondary net return water temperature is lower and the occasion that supply water temperature is not too high, heating service area is less, adopts this kind of mode to have the high advantage of the thermal efficiency.But above two kinds of modes have the shortcoming of oneself, mode one has a large amount of exhaust steam heats of condensation when operation and discharges into the atmosphere, and the supply water temperature of mode two can not be too high, otherwise will affect generated energy.
Model utility content
The purpose of this utility model is the deficiency for overcoming existing two kinds of heat-supplying modes, a kind of exhaust steam residual heat reclaiming system based on absorption heat pump technology is proposed, utilize the half of vapour condenser as heat source heat supply network backwater, utilize lithium bromide absorption heat pump to absorb the remaining exhaust steam residual heat of vapour condenser simultaneously, thus improve the supply water temperature of heat supply network further.With aforesaid way two Comparatively speaking, have under the prerequisite of equal heating load, the generated energy of steam turbine is more, and supply water temperature is higher.
A kind of exhaust steam residual heat reclaiming system based on absorption heat pump technology that the utility model proposes, this system comprises steam turbine, vapour condenser, condensate pump, it is characterized in that, also comprise lithium bromide absorption type heat pump, circulation pump of heat-supply network, waste heat circulation water pump and circulating water pipeline and form; Its annexation is: the entrance of steam turbine is connected with high temperature and high pressure steam pipeline, and the outlet of steam turbine is connected with the steam inlet of vapour condenser, and the water of condensation outlet of vapour condenser is connected with the entrance of condensate pump, and water of condensation delivery side of pump is connected with main condensate pipeline; The bleeding point of steam turbine is connected with the high-pressure generator entrance of lithium bromide absorption type heat pump, and the high-pressure generator outlet of lithium bromide absorption type heat pump is connected with condensing water conduit; The entrance of circulation pump of heat-supply network is connected with heating water return pipeline, the outlet of circulation pump of heat-supply network is connected with the entrance of the heat supply network heated side of vapour condenser, the outlet of the heat supply network heated side of vapour condenser is connected with the heated side entrance of lithium bromide absorption type heat pump, and the heated side outlet of lithium bromide absorption type heat pump is connected with heat supply network water supply line; The evaporator inlet of lithium bromide absorption type heat pump is connected with waste heat circulation water delivery side of pump, and the evaporator outlet of lithium bromide absorption type heat pump is connected with the cooling water side entrance of vapour condenser, and the cooling water side outlet of vapour condenser is connected with the entrance of waste heat circulation water pump.
Feature of the present utility model and useful achievement:
The utility model is based on the exhaust steam residual heat reclaiming system of absorption heat pump technology, by improving steam turbine exhaust pressure, the side of vapour condenser is utilized directly to heat a secondary net backwater, utilize steam turbine low-pressure to draw gas as driving simultaneously, drive the heat in lithium bromide absorption type heat pump recovery vapour condenser opposite side, further heating one secondary net backwater, and then the function of cooling tower can be replaced.The utility model can reclaim whole exhaust steam in steam turbine waste heats, and step heats a secondary net backwater, thus saves the energy, emissions reduction, improves the utilization ratio of primary energy, reduces the user cost of user.
Accompanying drawing explanation
Fig. 1 is a kind of exhaust steam residual heat reclaiming system structure based on absorption heat pump technology of the present utility model and workflow sketch.
Embodiment
The exhaust steam residual heat reclaiming system Structure Figure based on absorption heat pump technology that the utility model proposes and being described in detail as follows:
As shown in Figure 1, this system is formed primarily of steam turbine 1, vapour condenser 2, condensate pump 3, lithium bromide absorption type heat pump 4, circulation pump of heat-supply network 5, waste heat circulation water pump 6 and circulating water pipeline structure of the present utility model; Its annexation is: the entrance 11 of steam turbine 1 is connected with high temperature and high pressure steam pipeline a, the outlet 13 of steam turbine is connected with the exhaust steam entrance 21 of vapour condenser 2, the water of condensation outlet 22 of vapour condenser 2 is connected with the entrance of condensate pump 3, and the outlet of condensate pump 3 is connected with main condensate pipeline b; The extraction opening 12 of steam turbine 1 is connected with the high-pressure generator entrance 41 of lithium bromide absorption type heat pump 4, and the high-pressure generator outlet 42 of lithium bromide absorption type heat pump 4 is connected with condensing water conduit e; The entrance of circulation pump of heat-supply network 5 is connected with heating water return pipeline c, the outlet of circulation pump of heat-supply network 5 is connected with the entrance 23 of the heat supply network heated side of vapour condenser 2, the outlet 24 of the heat supply network heated side of vapour condenser 2 is connected with the heated side entrance 43 of lithium bromide absorption type heat pump 4, and the heated side outlet 44 of lithium bromide absorption type heat pump 4 is connected with heat supply network water supply line d; The evaporator inlet 45 of lithium bromide absorption type heat pump 4 is connected with the outlet of waste heat circulation water pump 6, the evaporator outlet 46 of lithium bromide absorption type heat pump 4 is connected with the cooling water side entrance 25 of vapour condenser 2, and the cooling water side outlet 26 of vapour condenser 2 is connected with the entrance of waste heat circulation water pump 6.
Feature of the present utility model is: this system is suitably improving on the basis of steam turbine exhaust pressure, originally two parts are divided into after being blocked by the cooling water leading to cooling tower, directly be connected with lithium bromide absorption type heat pump with heat supply network respectively, wherein a part directly heats heat supply network circulating water as direct heat source, another part, as the waste heat source of lithium bromide absorption type heat pump, utilizes lithium bromide absorption type heat pump to reclaim this part of waste heat in order to double heating heating backwater.
Working procedure of the present utility model is: enter vapour condenser condensation heat release after becoming the wet vapor of low-temp low-pressure after the steam of High Temperature High Pressure is done work by turbine expansion and become water of condensation, water of condensation by by condensate pump by entering into boiler of power plant after heater at different levels and thermal deaerator; After adopting native system, improve exhaust steam pressure and the temperature (as exhaust steam pressure is brought up to 30kPa, corresponding saturation temperature is 69.1 DEG C) of steam turbine, allow hot net water enter the side of vapour condenser simultaneously, utilize exhaust steam direct heat hot net backwater.Utilize drawing gas of steam turbine to reclaim second half waste heat of vapour condenser for double heating heat supply network backwater as the driving of lithium bromide absorption type heat pump main frame simultaneously.
Equipment in the utility model all can adopt matured product, and in specific embodiment, the specific implementation of each parts is respectively described below:
1, steam turbine: being the sucking condensing turbine group of maturation, is power plant's existing equipment, as C6-4.9/0.49;
2, vapour condenser: being the double-flow dividing wall type vapour condenser of maturation, is power plant's existing equipment, as heat exchange area 2000 ㎡ of vapour condenser;
3, condensate pump is the condensate pump of maturation, is power plant's existing equipment;
4, lithium bromide absorption type heat pump: be matured product, according to adding heat, the temperature of the out temperature of waste heat side and the import and export of heated side determines, as RHP20
5, circulation pump of heat-supply network, according to the flow of heat load and supply and return water temperature determination heat supply network, according to index circuit determination water lift of pump, according to the model of lift and flow determination water pump;
6, waste heat side circulating water pump: according to the flow of the carrying capacity of waste heat side, the temperature difference determination water pump of import and export, according to index circuit determination lift, according to the model of lift and flow determination water pump.

Claims (1)

1. based on an exhaust steam residual heat reclaiming system for absorption heat pump technology, this system comprises steam turbine, vapour condenser, condensate pump, it is characterized in that, also comprises lithium bromide absorption type heat pump, circulation pump of heat-supply network, waste heat circulation water pump and circulating water pipeline and forms; Its annexation is: the entrance of steam turbine is connected with high temperature and high pressure steam pipeline, and the outlet of steam turbine is connected with the exhaust steam entrance of vapour condenser, and the water of condensation outlet of vapour condenser is connected with the entrance of condensate pump, and water of condensation delivery side of pump is connected with main condensate pipeline; The extraction opening of steam turbine is connected with the high-pressure generator entrance of lithium bromide absorption type heat pump, and the high-pressure generator outlet of lithium bromide absorption type heat pump is connected with condensing water conduit; The entrance of circulation pump of heat-supply network is connected with heating water return pipeline, the outlet of circulation pump of heat-supply network is connected with the entrance of the heat supply network heated side of vapour condenser, the outlet of the heat supply network heated side of vapour condenser is connected with the heated side entrance of lithium bromide absorption type heat pump, and the heated side outlet of lithium bromide absorption type heat pump is connected with heat supply network water supply line; The evaporator inlet of lithium bromide absorption type heat pump is connected with waste heat circulation water delivery side of pump, and the evaporator outlet of lithium bromide absorption type heat pump is connected with the cooling water side entrance of vapour condenser, and the cooling water side outlet of vapour condenser is connected with the entrance of waste heat circulation water pump.
CN201420848126.XU 2014-12-26 2014-12-26 A kind of exhaust steam residual heat reclaiming system based on absorption heat pump technology Expired - Fee Related CN204492910U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420848126.XU CN204492910U (en) 2014-12-26 2014-12-26 A kind of exhaust steam residual heat reclaiming system based on absorption heat pump technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420848126.XU CN204492910U (en) 2014-12-26 2014-12-26 A kind of exhaust steam residual heat reclaiming system based on absorption heat pump technology

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CN204492910U true CN204492910U (en) 2015-07-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113375211A (en) * 2021-06-28 2021-09-10 大唐环境产业集团股份有限公司 Coal-fired unit heating system and operation method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113375211A (en) * 2021-06-28 2021-09-10 大唐环境产业集团股份有限公司 Coal-fired unit heating system and operation method

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Address after: 100190 Beijing, Zhongguancun, building two, floor 333, No.

Patentee after: Beijing Huayu energy technology Limited by Share Ltd

Address before: 100190 Beijing, Zhongguancun, building two, floor 333, No.

Patentee before: Beijing Zhongke Huayu Energy Technology Development Co., Ltd.

CP01 Change in the name or title of a patent holder
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150722

Termination date: 20181226

CF01 Termination of patent right due to non-payment of annual fee