CN202109702U - Water source heat pump system of thermal power plant - Google Patents

Water source heat pump system of thermal power plant Download PDF

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Publication number
CN202109702U
CN202109702U CN2011202139129U CN201120213912U CN202109702U CN 202109702 U CN202109702 U CN 202109702U CN 2011202139129 U CN2011202139129 U CN 2011202139129U CN 201120213912 U CN201120213912 U CN 201120213912U CN 202109702 U CN202109702 U CN 202109702U
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CN
China
Prior art keywords
water
heat pump
source
pipeline
source heat
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Expired - Lifetime
Application number
CN2011202139129U
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Chinese (zh)
Inventor
于海洪
李静宜
张书梅
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China Electric Power Construction Group Hebei electric survey and Design Research Institute Co., Ltd.
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Hebei Electric Power Design and Research Institute
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Priority to CN2011202139129U priority Critical patent/CN202109702U/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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine

Abstract

The utility model relates to a water source heat pump system of a thermal power plant, which comprises a source water circulating device, an air-conditioning water circulating device and a water source heat pump unit. The source water circulating device and the water source heat pump unit are connected by a pipeline; the air-conditioning water circulating device and the water source heat pump unit are connected by a pipeline; the source water circulating device comprises a pump forebay, a source water circulating pump and a circulating cooling water system which are connected by a pipeline; and a water inlet end of the pump forebay is connected with a circulating cooling water supply pipeline and a circulating cooling water return pipeline through a pipeline provided with an adjusting valve. The water source heat pump system adopts circulating cooling water in the power plant as source water of the water source heat pump unit, requirements for refrigerating and heating of the water source heat pump system can be met, water resources on the earth can also be saved, waste heat of the circulating cooling water in the thermal power plant is used sufficiently, and energy utilization rate is increased.

Description

The thermal power plant water source heat pump system
Technical field
The utility model relates to a kind of water source heat pump system, particularly a kind of water source heat pump system that is applied to the thermal power plant.
Background technology
Water source heat pump system be utilize the stored solar energy resources of earth water body and geothermal energy and the low temperature Lowlevel thermal energy resource that forms as Cooling and Heat Source, carry out the refrigeration and heating air-conditioning system of power conversion.The water source heat pump system main function components is a water source heat pump units, and water source heat pump units comprises evaporimeter and condenser.Usually the earth water body as the water source heat pump units source water is underground water or surface water etc.; The temperature of these water bodys is relatively stable throughout the year; Be generally 10~25 ℃, winter is higher than environment temperature, and summer is lower than environment temperature; Be good source heat pump heat and cold source of air conditioning; Therefore as the source water of water source heat pump units, can reach the refrigeration purpose with the transfer of heat in the air-conditioning system summer through condenser in source water, then can from source water, extract heat through evaporimeter winter and reach the heating purpose.But because surface water and groundwater resources are limited; And in order to reduce the heat exchange property that evaporimeter and condenser produce fouling and guarantee unit in the water source heat pump units; Usually need to increase the flow velocity of source water; This must cause water source heat pump units flow when water intaking and recharge water bigger, increases the energy consumption of source pump, and even more serious is can the geological hydrology on water intaking ground be exerted an influence.
Only some changes electric energy into to the total amount of heat of fuel combustion in the thermal power plant, and another part then is lost in the environment through the recirculated cooling water of boiler chimney and turbine condenser.If can this part heat recovery be utilized and be loaded with the source water of the recirculated cooling water of waste heat as water source heat pump units, the energy utilization rate of power plant is improved greatly, can practice thrift earth water body simultaneously, the protection geological form.
The utility model content
The utility model technical issues that need to address provide a kind of in saving earth water resource; Can make full use of the waste heat of thermal power plant recirculated cooling water, the water source heat pump system that adopts recirculated cooling water to freeze and heat as the source water of water source heat pump units.
For solving the problems of the technologies described above, the technical scheme that the utility model is taked is:
The thermal power plant water source heat pump system; Comprise water source heat pump units, pass through source water EGR and air conditioner water EGR that pipeline is connected with water source heat pump units; Said air conditioner water EGR comprises air-conditioning water supply line, air-conditioning water return pipeline and is arranged on the air conditioner water circulating pump in the air-conditioning water return pipeline; The air-conditioning water supply line connects the evaporimeter and the condenser of water source heat pump units through the pipeline that is provided with the switching valve in season, and the air-conditioning water return pipeline connects the evaporimeter and the condenser of water source heat pump units through the pipeline that is provided with the switching valve in season; Said source water EGR comprises pump forebay, source water circulating pump and the recirculating cooling water system that connects through pipeline; The water inlet end of pump forebay connects recirculated cooling water water supply line and cooling water return pipeline through the pipeline that is provided with control valve; The water side of source water circulating pump connects the evaporimeter and the condenser of water source heat pump units through the pipeline that is provided with the switching valve in season, and water source heat pump units is connected with recirculating cooling water system through the pipeline that is provided with the switching valve in season.
Because the technological progress of having adopted technique scheme, the utility model to obtain is:
The utility model combines the gas waste heat that coagulates in water source heat pump technology and thermal power plant; Utilize the gas waste heat with fixed attention that carries in the recirculated cooling water; As the refrigerating and heat-supplying source of air-conditioning, adopt the utility model, because available recirculated cooling water amount is very abundant; The source water constant flow is carried; Therefore no matter be winter or the Energy Efficiency Ratio that can both improve water source heat pump units summer to greatest extent, in the refrigeration phase, the comprehensive Energy Efficiency Ratio of water source heat pump units can reach 4.67; And can reach 4.05 in the comprehensive Energy Efficiency Ratio of heating phase water source heat pump units, surpassed 3.85 (refrigeration phase and liquid-ring type source pump are relatively) of national standard refrigeration phase and 3.6 (heating phase and underground ability of swimming source pump are relatively) of heating phase.The utility model source water system only need dispose a cover water circulating pump, just can make system reliable, has practiced thrift cost greatly.The utility model has been owing to adopted two-way to supply water and the pump forebay has been set in the pipeline before the source water circulating pump, thereby can fully guarantee the interval of source water temperature stabilization a setting, makes water source heat pump units efficient operation all the time.
Description of drawings
Fig. 1: the structural representation of the utility model.
Wherein: 1. recirculated cooling water water supply line, 2. cooling water return pipeline, 3. pump forebay, 4. source water circulating pump; 5. water source heat pump units, 51. condensers, 52. evaporimeters, 53. compressors; 54. expansion valve, 6. air-conditioning water return pipeline, 7. air-conditioning water supply line, 8. recirculating cooling water system; 9. air conditioner water circulating pump, 11~12. control valves, 13~20. season switching valve.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further to specify:
A kind of thermal power plant water source heat pump system, as shown in Figure 1.Comprise source water EGR, air conditioner water EGR and water source heat pump units 5, be connected through pipeline between source water EGR and the water source heat pump units, be connected through pipeline between air conditioner water EGR and the water source heat pump units.
Water source heat pump units comprises other auxiliary equipment such as condenser 51, evaporimeter 52, compressor 53, expansion valve 54 and refrigerant circulation line; The cold-producing medium of low-temp low-pressure gets into compressor 53 after evaporimeter 52 heat absorptions heat up; Improved pressure after the adiabatic compression, simultaneous temperature also raises, and gets into condenser 51 then; Get into expansion valve 54 after the heat release again; Pressure reduction simultaneous temperature also reduces after the adiabatic expansion, and the cold-producing medium of low-temp low-pressure heats up in evaporimeter 52 heat absorptions again, and (heating) circulation of freezing goes round and begins again.
The source water EGR comprises pump forebay 3, source water circulating pump 4 and the recirculating cooling water system 8 that connects through pipeline; The water inlet end of pump forebay connects recirculated cooling water water supply line 1 and cooling water return pipeline 2 through the pipeline that is provided with control valve 11,12; The water side of source water circulating pump connects the evaporimeter 52 and the condenser 51 of water source heat pump units through being provided with season switching valve 13,15 pipeline, and water source heat pump units is connected with recirculating cooling water system 8 through being provided with season switching valve 14,16 pipeline.
The air conditioner water EGR comprises air-conditioning water return pipeline 6, air-conditioning water supply line 7 and air conditioner water circulating pump 9; The air-conditioning water return pipeline connects the evaporimeter 52 and the condenser 51 of water source heat pump units through being provided with season switching valve 17,19 pipeline, the air-conditioning water supply line through pipeline be connected with condenser 51 with the evaporimeter 52 of water source heat pump units through being provided with season switching valve 18,20 pipeline.
When the utility model is worked under the operating mode in the winter time, adopt heating mode, open control valve 11,12, season switching valve 13,14,19,20.Control valve 11 and 12 aperture are regulated coupling according to the needed water temperature of water source heat pump units.After recirculated cooling water in recirculated cooling water water supply line 1 and the cooling water return pipeline 2 fully mixes through pipeline inflow pump forebay 3 as source water; Through source water circulating pump 4, season switching valve 13 flow to the evaporimeter 52 of water source heat pump units; In evaporimeter, carry out heat exchange with low-temperature low-pressure refrigerant, the source water release heat, cold-producing medium absorbs heat; After accomplishing heat exchange; The source water temperature descends, and 14 carries back recirculating cooling water system 8, the continuation repeated use through flow through season switching valve of pipeline; Temperature raise after cold-producing medium absorbed heat, after compressor 53 compressions, entered condenser 51 and carried out heat exchange with air-conditioner water system.The air-conditioning backwater of accomplishing the heat supply task through air-conditioning water return pipeline 6, air-conditioning circulating pump 9, season switching valve 19 flow to condenser 51, in condenser, carry out heat exchange with high-temperature high-pressure refrigerant, air conditioner water absorbs heat; Cold-producing medium is emitted heat; After accomplishing heat exchange, the air conditioner water temperature raises, and the season switching valve 20 of flowing through is through air-conditioning water supply line 7; With the heat transferred user, carry out heat supplying process; Cold-producing medium gets into expansion valve 54 after emitting heat, gets into evaporimeter 52 after the adiabatic expansion once more and carries out heat exchange with the source water system.Under the general winter condition; The inflow temperature of water source heat pump units source water is about 25 ℃, and the leaving water temperature of source water is about 20 ℃, and the available temperature difference is 5 ℃; The comprehensive Energy Efficiency Ratio of water source heat pump units can reach 4.05, is higher than 3.6 (underground ability of swimming source pump) of national standard.
When the utility model is worked, adopt refrigeration mode under summer condition, open control valve 11, season switching valve 15,16,17,18.Recirculated cooling water in the recirculated cooling water water supply line 1 as source water through pipeline inflow pump forebay 3 through source water circulating pump 4, season switching valve 15 flow to the condenser 51 of water source heat pump units; In condenser, carry out heat exchange with high-temperature high-pressure refrigerant, source water absorbs heat, and cold-producing medium is emitted heat; After accomplishing heat exchange; The source water temperature raises, and 16 carries back recirculating cooling water system 8, the continuation repeated use through flow through season switching valve of pipeline; Cold-producing medium gets into expansion valve 54 after emitting heat, gets into evaporimeter 52 after the adiabatic expansion once more and carries out heat exchange with air-conditioner water system.The air-conditioning backwater of accomplishing the air-conditioning task through air-conditioning water return pipeline 6, air conditioner water circulating pump 9, season switching valve 17 flow to evaporimeter 52, in evaporimeter, carry out heat exchange, air-conditioning backwater release heat with low-temperature low-pressure refrigerant; Cold-producing medium absorbs heat; After accomplishing heat exchange, the air conditioner water temperature descends, and the season switching valve 18 of flowing through is through air-conditioning water supply line 7; Cold is passed to the user, carry out air-conditioning process; Temperature raise after cold-producing medium absorbed heat, after compressor 53 compressions, entered condenser 51 and carried out heat exchange with the source water system.Generally under summer condition, the inflow temperature of source water is about 31 ℃, and the leaving water temperature of source water is about 36 ℃, and the available temperature difference is 5 ℃, and the comprehensive Energy Efficiency Ratio of water source heat pump units can reach 4.67, is higher than 3.85 (liquid-ring type source pump) of national standard.

Claims (1)

1. thermal power plant water source heat pump system; Comprise water source heat pump units (5), pass through source water EGR and air conditioner water EGR that pipeline is connected with water source heat pump units; Said air conditioner water EGR comprises air-conditioning water return pipeline (6), air-conditioning water supply line (7) and is arranged on the air conditioner water circulating pump (9) in the air-conditioning water return pipeline; The air-conditioning water return pipeline connects the evaporimeter (52) and the condenser (51) of water source heat pump units through the pipeline that is provided with switching valve in season (17,19), and the air-conditioning water supply line is connected with condenser (51) with the evaporimeter (52) of water source heat pump units through the pipeline that is provided with switching valve in season (18,20); It is characterized in that: said source water EGR comprises pump forebay (3), source water circulating pump (4) and the recirculating cooling water system (8) that connects through pipeline; The water inlet end of pump forebay connects recirculated cooling water water supply line (1) and cooling water return pipeline (2) through the pipeline that is provided with control valve (11,12); The water side of source water circulating pump connects the evaporimeter (52) and the condenser (51) of water source heat pump units through the pipeline that is provided with switching valve in season (13,15), and water source heat pump units is connected with recirculating cooling water system (8) through the pipeline that is provided with switching valve in season (14,16).
CN2011202139129U 2011-06-23 2011-06-23 Water source heat pump system of thermal power plant Expired - Lifetime CN202109702U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202139129U CN202109702U (en) 2011-06-23 2011-06-23 Water source heat pump system of thermal power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202139129U CN202109702U (en) 2011-06-23 2011-06-23 Water source heat pump system of thermal power plant

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CN202109702U true CN202109702U (en) 2012-01-11

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135746A (en) * 2015-09-18 2015-12-09 北京百度网讯科技有限公司 Chilled water waste heat reuse system and method for data center
CN108895710A (en) * 2018-08-10 2018-11-27 青岛艳阳天环保科技有限公司 A kind of refrigeration heating system coupling gas heating function
CN112178980A (en) * 2020-09-29 2021-01-05 国电龙源节能技术有限公司上海分公司 Waste heat utilization system and method based on electrically driven water source heat pump unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135746A (en) * 2015-09-18 2015-12-09 北京百度网讯科技有限公司 Chilled water waste heat reuse system and method for data center
CN108895710A (en) * 2018-08-10 2018-11-27 青岛艳阳天环保科技有限公司 A kind of refrigeration heating system coupling gas heating function
CN108895710B (en) * 2018-08-10 2024-01-23 青岛艳阳天环保科技有限公司 Refrigerating and heating system with coupling fuel gas heating function
CN112178980A (en) * 2020-09-29 2021-01-05 国电龙源节能技术有限公司上海分公司 Waste heat utilization system and method based on electrically driven water source heat pump unit

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GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 050031 No. 6 Jianhua Street, Shijiazhuang City, Hebei Province

Patentee after: China Electric Power Construction Group Hebei electric survey and Design Research Institute Co., Ltd.

Address before: 050031 No. 6 Jianhua Street, Shijiazhuang City, Hebei Province

Patentee before: Hebei Province Power Surveying Design & Research Institute

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120111