CN204678472U - A kind of system of waste heat for heating reclaiming circulating cooling water of power plant - Google Patents

A kind of system of waste heat for heating reclaiming circulating cooling water of power plant Download PDF

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Publication number
CN204678472U
CN204678472U CN201520353951.7U CN201520353951U CN204678472U CN 204678472 U CN204678472 U CN 204678472U CN 201520353951 U CN201520353951 U CN 201520353951U CN 204678472 U CN204678472 U CN 204678472U
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cooling water
heating
water
pump
power plant
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CN201520353951.7U
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Chinese (zh)
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王正
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China Huadian Engineering (group) Co Ltd Design Institute
China Huadian Engineering Group Co Ltd
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Abstract

The utility model discloses a kind of system of waste heat for heating reclaiming circulating cooling water of power plant, comprise steam turbine, steam turbine is connected with condenser, condenser is connected with condensate pump, condenser is connected with cooling tower by cooling water return pipeline, also be connected with water circulating pump by recirculated cooling water supply channel, heat pump is connected with condenser through heat pump supply channel, also be connected with water circulating pump through heat pump water return pipeline road, heat pump is also connected with heating feed pipe and heating return pipe respectively.This system makes full use of the waste heat of the circulating cooling water of power plant of low temperature, adopt the efficient combination of heat pump techniques and heating system and steam turbine cycle water system, the circulating cooling water of power plant of low temperature is generated the high-temperature-hot-water being used for heating, decrease the thermal pollution to environment, improve energy efficiency; Reduce simultaneously and draw gas for the vapour amount of heating, improve the efficiency of steam turbine, add generated energy.

Description

A kind of system of waste heat for heating reclaiming circulating cooling water of power plant
Technical field
The utility model relates to a kind of system extracting circulating cooling water afterheat, particularly a kind of system of waste heat for heating reclaiming circulating cooling water of power plant.
Background technology
General large thermal power plant BTHE is only 40%, and the heat of about 60% is taken away by condenser recirculated cooling water and is discharged in environment.Circulating cooling water of power plant temperature at discharging condensate, below 50 DEG C, belongs to low grade heat energy, directly utilizes narrow scope, is all the mode adopting cooling tower directly to discharge in the past.These heats were all do not add utilize and be directly discharged in the middle of environment in the past, and the heat of these discharges, not only causes the thermal pollution to environment, also reduce the energy efficiency in thermal power plant.
At present, the domestic power plant carrying out its UTILIZATION OF VESIDUAL HEAT IN is little, 16% of Jin Zhan thermal power plant sum.In order to respond the policy of the energy-saving and emission-reduction that country proposes, the necessary research carrying out high efficiency residual-heat utilization technology.Heat pump techniques utilizes at residual heat of electric power plant and can play very large effect in energy conservation, circulating cooling water of power plant is more more superior than municipal sewage, river, seawater and underground water as the low-temperature heat source of water resource heat pump, circulating cooling water of power plant has the water quality of relative clean, metastable flow and higher temperature, hot equipment adopted by heat pump just can be relatively simple, and the coefficient of performance can keep higher level.The automaticity of heat pump equipment is high, and energy utilization efficiency is high.
Utility model content
The purpose of this utility model is, provides a kind of system of waste heat for heating reclaiming circulating cooling water of power plant.The utility model adopts heat pump techniques to make full use of the waste heat of circulating cooling water of power plant for heating of living, and improves energy efficiency, decreases the thermal pollution to environment.
The technical solution of the utility model: a kind of system of waste heat for heating reclaiming circulating cooling water of power plant, comprise steam turbine, condenser, condensate pump, cooling tower, water circulating pump, heat pump, feed pipe and return pipe, steam turbine is connected with condenser, the power conversion of steam is mechanical power by steam turbine, the steam discharge of steam turbine is condensed into water by condenser, recirculated cooling water is in condenser, after absorbing turbine discharge condensation liberated heat, temperature raises, condenser is connected with condensate pump, condensate pump is in order to carry the condensate water in condenser, condenser is connected with cooling tower by cooling water return pipeline, used for cooling tower with cooling circulating cooling water, condenser is also connected with water circulating pump by recirculated cooling water supply channel, heat pump is drawn from cooling water return pipeline, then heat pump is received again on recirculated cooling water supply channel, heat pump is also connected with heating feed pipe and heating return pipe respectively.Low-temperature circulating cooling water carries out first time heating through heat pump.
The waste heat of aforesaid recovery circulating cooling water of power plant in the system that heats, described heat pump respectively with draw gas import and draw gas to export and be connected.Recirculated cooling water through heat pump first time heating completes second time heating through what draw gas again, generates high-temperature-hot-water.
The waste heat of aforesaid recovery circulating cooling water of power plant is in the system that heats, and described cooling tower is connected with cistern, and cistern is connected with water circulating pump.Recirculated cooling water cools in cooling tower, enters cistern after cooling.
The waste heat of aforesaid recovery circulating cooling water of power plant is in the system that heats, and described heat pump supply channel is provided with the first stop valve and circulating pump.
The waste heat of aforesaid recovery circulating cooling water of power plant is in the system that heats, and described heat pump water return pipeline is provided with the second stop valve.Arrange the first stop valve and the second stop valve break down with heat pump under preventing fortuitous event thus cut off heat pump, condenser is cooled by cooling tower.
The waste heat of aforesaid recovery circulating cooling water of power plant is in the system that heats, and described heating return pipe is provided with heating circulation pump.
Compared with prior art, the utility model makes full use of the waste heat of the circulating cooling water of power plant of low temperature, adopt the efficient combination of heat pump techniques and heating system and steam turbine cycle water system, the circulating cooling water of power plant of low temperature is converted to the high-temperature-hot-water for heating, decrease the thermal pollution to environment, improve energy efficiency; Reduce simultaneously and draw gas for the steam consumption of heating system, improve the efficiency of steam turbine, add generated energy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Being labeled as in accompanying drawing: 1-steam turbine, 2-condenser, 3-condensate pump, 4-cooling tower, 5-water circulating pump, 6-heat pump, 7-heating feed pipe, 8-heating return pipe, 9-cooling water return pipeline, 10-recirculated cooling water supply channel, 11-heat pump supply channel, 12-heat pump water return pipeline, 13-first stop valve, 14-circulating pump, 15-second stop valve, 16-extraction line, 17-draws gas condensing water conduit, 18-cistern, 19-heating circulation pump, 20-heating system.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described.
Embodiment of the present utility model: a kind of system of waste heat for heating reclaiming circulating cooling water of power plant, comprise impulse turbine 1, impulse turbine 1 is connected with direct-contact type condenser 2, the power conversion of steam is become mechanical power by impulse turbine 1, direct-contact type condenser 2 is in order to be condensed into water by the steam discharge of impulse turbine 1, recirculated cooling water is in direct-contact type condenser 2, and after absorbing impulse turbine 1 steam discharge condensation liberated heat, temperature raises.Direct-contact type condenser 2 is connected with condensate pump 3, condensate pump 3 is in order to carry the condensate water in direct-contact type condenser 2, direct-contact type condenser 2 is connected with glass fibre reinforced plastics cooling tower 4 by cooling water return pipeline 9, glass fibre reinforced plastics cooling tower 4 is in order to cool low-temperature circulating cooling water, direct-contact type condenser 2 is also connected with water circulating pump 5 by recirculated cooling water supply channel 10, and water circulating pump 5 is in order to carry cooled recirculated cooling water.Heat pump 6 is connected with cooling water return pipeline 9 by heat pump supply channel 11, is also connected with recirculated cooling water supply channel 10 by heat pump water return pipeline 12.Heat pump 6 is also connected with heating feed pipe 7 and heating return pipe 8 respectively, and heating return pipe 8 is provided with heating circulation pump 19.Heat pump 6 is connected with extraction line 16 and the condensing water conduit 17 that draws gas respectively.The circulating cooling water of power plant of low temperature carries out first time heating through heat pump 6, and then through second time heating of having drawn gas, generate high-temperature-hot-water, high-temperature-hot-water is delivered to heating system 20 by heating feed pipe 7, through heating circulation pump 19 after high-temperature-hot-water cooling, and get back to direct-contact type condenser 2 to recycle by heating return pipe 8.Heat pump 6, can backheat condensate water by after the UTILIZATION OF VESIDUAL HEAT IN of low-temperature circulating cooling water, improves the mean temperature of feedwater endothermic process, reduces the steam consumption that low-pressure pumping steam is used for heating system 20.As heat pump 6 breaks down, direct-contact type condenser 2 enters glass fibre reinforced plastics cooling tower 4 by cooling water return pipeline 9 and connects cistern 18, and recirculated cooling water enters cistern 18 after glass fibre reinforced plastics cooling tower 4 cools.Cistern 18 connects water circulating pump 5, cooled recirculated cooling water through the defeated direct-contact type condenser 2 of getting back to of recirculated cooling water supply channel 10 to recycle.Heat pump supply channel 11 is provided with the first stop valve 13 and circulating pump 14, arranges circulating pump 14 in order to low-temperature circulating cooling water is delivered to heat pump 6.Heat pump water return pipeline 12 is provided with the second stop valve 15.Arrange the first stop valve 13 and the second stop valve 15 to break down with heat pump 6 under preventing fortuitous event, thus cut off heat pump 6, direct-contact type condenser 2 is cooled by glass fibre reinforced plastics cooling tower 4.
Operation principle of the present utility model: recirculated cooling water is as the low-temperature heat source of heat pump 6, and after absorbing steam turbine 1 steam discharge condensation liberated heat, temperature raises, and a part of recirculated cooling water directly enters cooling tower 4, gets back to cistern 18 to recycle after cooling; Another part recirculated cooling water is delivered to heat pump 6 from the outlet of condenser 2 through the first branch road 11, first time heating is carried out through heat pump 6, and then through second time heating of having drawn gas, generate high-temperature-hot-water, high-temperature-hot-water is delivered to heating system 20 through heating feed pipe 7, in order to life heating; Through the high-temperature-hot-water of heat exchange cooling through heating circulation pump 19, and be back to condenser 2 by heating return pipe 8 is defeated, again recycle.

Claims (6)

1. one kind is reclaimed the system of waste heat for heating of circulating cooling water of power plant, it is characterized in that: comprise steam turbine (1), steam turbine (1) is connected with condenser (2), condenser (2) is connected with condensate pump (3), condenser (2) is connected with cooling tower (4) by cooling water return pipeline (9), also be connected with water circulating pump (5) by recirculated cooling water supply channel (10), heat pump (6) is drawn heat pump supply channel (11) from cooling water return pipeline (9) and is connected with condenser (2), also be connected with recirculated cooling water supply channel (10) through heat pump water return pipeline (12), heat pump (6) is also connected with heating feed pipe (7) and heating return pipe (8) respectively.
2. a kind of waste heat reclaiming circulating cooling water of power plant according to claim 1 is for the system heated, and it is characterized in that: described heat pump (6) is also connected with extraction line (16) and the condensing water conduit that draws gas (17) respectively.
3. a kind of waste heat reclaiming circulating cooling water of power plant according to claim 1 is for the system heated, and it is characterized in that: be provided with cistern (18) between described cooling tower (4) and water circulating pump (5).
4. a kind of waste heat reclaiming circulating cooling water of power plant according to claim 1 is for the system heated, and it is characterized in that: described heat pump supply channel (11) is provided with the first stop valve (13) and circulating pump (14).
5. a kind of waste heat reclaiming circulating cooling water of power plant according to claim 1 is for the system heated, and it is characterized in that: described heat pump water return pipeline (12) is provided with the second stop valve (15).
6. a kind of waste heat reclaiming circulating cooling water of power plant according to claim 1 is for the system heated, and it is characterized in that: described heating return pipe (8) is provided with heating circulation pump (19).
CN201520353951.7U 2015-05-28 2015-05-28 A kind of system of waste heat for heating reclaiming circulating cooling water of power plant Expired - Fee Related CN204678472U (en)

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CN201520353951.7U CN204678472U (en) 2015-05-28 2015-05-28 A kind of system of waste heat for heating reclaiming circulating cooling water of power plant

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104963735A (en) * 2015-06-21 2015-10-07 中国能源建设集团广东省电力设计研究院有限公司 Method and device for heating gas fuel through condenser cooling water return water waste heat
CN105972676A (en) * 2016-06-29 2016-09-28 杭州华电双冠能源科技有限公司 Heat pump system and method for recycling condenser waste heat for water supply of heat supply network
CN113431654A (en) * 2021-05-31 2021-09-24 国投云顶湄洲湾电力有限公司 Condensation heat recycling device and working method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104963735A (en) * 2015-06-21 2015-10-07 中国能源建设集团广东省电力设计研究院有限公司 Method and device for heating gas fuel through condenser cooling water return water waste heat
CN105972676A (en) * 2016-06-29 2016-09-28 杭州华电双冠能源科技有限公司 Heat pump system and method for recycling condenser waste heat for water supply of heat supply network
CN105972676B (en) * 2016-06-29 2019-05-17 杭州华电双冠能源科技有限公司 A kind of recycling condenser waste heat is used for the heat pump system and method for heat supply network moisturizing
CN113431654A (en) * 2021-05-31 2021-09-24 国投云顶湄洲湾电力有限公司 Condensation heat recycling device and working method thereof

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CP01 Change in the name or title of a patent holder

Address after: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11

Patentee after: CHINA HUADIAN ENGINEERING CO., LTD.

Patentee after: China Huadian Engineering (Group) Co., Ltd. Design Institute

Address before: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11

Patentee before: China Huadian Engineering (Group) Co., Ltd.

Patentee before: China Huadian Engineering (Group) Co., Ltd. Design Institute

TR01 Transfer of patent right

Effective date of registration: 20170606

Address after: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11

Patentee after: CHINA HUADIAN ENGINEERING CO., LTD.

Address before: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11

Co-patentee before: China Huadian Engineering (Group) Co., Ltd. Design Institute

Patentee before: CHINA HUADIAN ENGINEERING CO., LTD.

TR01 Transfer of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150930

Termination date: 20200528

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