CN101871674A - System for supplying heat by utilizing steam extracted from extraction steam turbine to drive heat pump - Google Patents
System for supplying heat by utilizing steam extracted from extraction steam turbine to drive heat pump Download PDFInfo
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- CN101871674A CN101871674A CN 201010165574 CN201010165574A CN101871674A CN 101871674 A CN101871674 A CN 101871674A CN 201010165574 CN201010165574 CN 201010165574 CN 201010165574 A CN201010165574 A CN 201010165574A CN 101871674 A CN101871674 A CN 101871674A
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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
Abstract
The invention relates to a system for supplying heat by utilizing steam extracted from extraction steam turbine to drive heat pump, belonging to the heat supply technical field. The system mainly comprises a boiler, an extraction steam turbine, a condenser, a cooling water tower, a circulating water pump, a condensate water pump, a low pressure bleeder heater, a deaerator, a chemical water treatment device and a high pressure bleeder heater; and the invention is characterized in that the system also comprises an industrial turbine, an open-type heat pump and a heat exchanger. In the system of the invention, energy taken away by circulating cooling water can be recycled by the heat pump on one hand, on the other hand steam is used for directly driving the heat pump, one part of energy in waste steam is used for heating circulating water of heat supply pipe network, the other part is returned to the boiler along with condensate water, no energy is released in vain, thus causing heat loss to be minimum.
Description
Technical field
The invention belongs to the heat supply process field, particularly carry out the system of heat supply with the steam drive heat pump of extracting out in the extraction turbine.
Background technology
At present a lot of steam power plants adopt extraction turbine to carry out cogeneration of heat and power, thereby from steam turbine, extract a part of steam out and provide heat supply for the user by the recirculated water that heat-exchanger rig heats heating network, the then pushing turbine generating of all the other steam, the steam of these pushing turbine generatings becomes the exhaust steam that can not do work again after by steam turbine acting generating, being recycled water quench during by condenser is to get back to boiler behind the aqueous water, and recirculated cooling water is taken away the heat in these exhaust steam by cooling tower and is discharged in the atmosphere.
The existing system that utilizes the steam power plant that extraction turbine carries out cogeneration of heat and power as shown in Figure 1, this system comprises: boiler 1, extraction turbine 2, condenser 3, cooling tower 4, water circulating pump 5, condensate pump 6, low pressure bleeder heater 7, oxygen-eliminating device 8, Water Treatment device 9, high pressure bleeder heater 10, heat supply network heating heat exchanger 11; Its annexation is: the vapor outlet port of boiler 1 links to each other with the inlet of extraction turbine 2, and first outlet 21 of extraction turbine 2 links to each other with the inlet 31 of condenser 3, and second of extraction turbine 2 exports 22 and links to each other with the inlet of heat supply network heating heat exchanger 11; The outlet 32 of condenser 3 links to each other with the inlet of condensate pump 6; The outlet of condensate pump 6 links to each other with low pressure bleeder heater 7, oxygen-eliminating device 8, high pressure bleeder heater 10 successively; Oxygen-eliminating device 8 also links to each other with the outlet of Water Treatment device 9; Two other of condenser 3 imported and exported with cooling tower 4, water circulating pump 5 and connected into a cooling water circulation loop; Heat supply network heating heat exchanger 11 also links to each other with the outlet 32 of condenser 3.
The course of work of said system is: the steam that boiler 1 produces enters extraction turbine 2, extraction turbine 2 has two outlets: 21 primary outlets for the steam that is used to generate electricity, 22 is extraction opening, the steam that is used to generate electricity becomes after pushing turbine 2 generating and enters condenser 3 after the exhaust steam that can not do work is come out by primary outlet 21, in condenser 3, be recycled water quench and be liquid condensed water, these condensed waters enter by condensate pump 6 and enter oxygen-eliminating device 8 after low pressure bleeder heater 7 is heated, in oxygen-eliminating device 8, enter high pressure bleeder heater 10 after the deoxygenation, entered boiler after the heating once more in high pressure bleeder heater 10, the steam of extracting out from the extraction opening 22 of extraction turbine 2 enters heat supply network heating heat exchanger 11 water the heating network is heated.And the heat of a large amount of low taste that exhaust steam contained that the steam that is used for generating electricity forms in pushing turbine 2 generating back is recycled cooling water and takes away, and discharges into the atmosphere by cooling tower 4.
Because at present the maximal efficiency of steam turbine has only about 40%, the heat energy in the steam only has and changes useful electric energy about 40% into, and all the other 60% retains in the exhaust steam, and these energy recirculated water that is cooled is taken away, and is discharged in the atmosphere by cooling tower at last.Like this, not only a large amount of heat energy are discharged in the atmosphere, cause the significant wastage of energy and to the thermal pollution of air, and because cooling circulating water evaporation in a large number the time through cooling tower, cause a large amount of wastes of water resource, the water circulating pump of cooling water and the blower fan of cooling tower also will consume a large amount of electric energy simultaneously.
Summary of the invention
The objective of the invention is for overcoming the weak point of prior art, a kind of system with the steam drive heat pump heat supply of extracting out in the extraction turbine is proposed, can reclaim by heat pump on the one hand and be recycled the energy (heat energy in the exhaust steam that can not do work again just) that cooling water is taken away, directly drive heat pump with steam on the other hand, energy part in the exhaust steam is used to heat the recirculated water of heating network, another part is along with condensed water is got back in the boiler, do not have energy to be discharged in vain, thermal loss is reduced.
The present invention proposes the heating system of utilizing the steam drive heat pump of extracting out in the extraction turbine, this system mainly comprises: boiler, extraction turbine, condenser, cooling tower, water circulating pump, condensate pump, low pressure bleeder heater, oxygen-eliminating device, Water Treatment device, high pressure bleeder heater; It is characterized in that, also comprise industrial steam turbine, the open-type heat pump, heat exchanger, wherein: the outlet of boiler links to each other with the inlet of extraction turbine, the primary outlet of extraction turbine links to each other with the heat of condenser inlet, the heat outlet of condenser links to each other with the inlet of condensate pump, the cold outlet of condenser links to each other with the cold inlet of open-type heat pump with the inlet of cooling tower respectively, the outlet of cold outlet of open-type heat pump and cooling tower all links to each other with the inlet of water circulating pump, the recirculated water delivery side of pump links to each other with the cold inlet of condenser, the condensate water delivery side of pump successively with the low pressure bleeder heater, oxygen-eliminating device, the high pressure bleeder heater links to each other, and the outlet of high pressure bleeder heater links to each other with the inlet of boiler; Oxygen-eliminating device also links to each other with the Water Treatment device; The extraction opening of extraction turbine links to each other with the industrial steam turbine inlet, the industrial steam turbine outlet links to each other with the heat inlet of heat exchanger, the heat outlet of heat exchanger links to each other with the inlet of condensate pump, the cold inlet of heat exchanger links to each other with the outlet of the heat of open-type heat pump, the heat inlet of open-type heat pump links to each other with the heating network backwater, and the cold outlet of heat exchanger is supplied water with heating network and linked to each other; Industrial steam turbine links to each other with the open-type heat pump by shaft joint.
Technical characterstic of the present invention and beneficial effect:
The present invention has done improvement on the basis of above-mentioned power plant original system: increased industrial steam turbine, open-type heat pump and heat exchanger.System of the present invention can reclaim by heat pump on the one hand and be recycled the energy that cooling water is taken away, directly drive heat pump with steam on the other hand, energy part in the exhaust steam is used to heat the recirculated water of heating network, another part is along with condensed water is got back in the boiler, do not have energy to be discharged in vain, make the thermal loss minimum.
Accompanying drawing is described
Fig. 1 is conventional extraction turbine power generation and heat supply system architecture and workflow schematic diagram.
Fig. 2 carries out the structure and the workflow schematic diagram of the system of heat supply for the steam drive heat pump of extracting out with extraction turbine of the present invention.
The specific embodiment
The method structure drawings and Examples that the steam drive heat pump with the extraction turbine extraction that the present invention proposes carries out heat supply are described in detail as follows:
Structure of the present invention as shown in Figure 2, this system mainly comprises: boiler 1, extraction turbine 2, condenser 3, cooling tower 4, water circulating pump 5, condensate pump 6, low pressure bleeder heater 7, oxygen-eliminating device 8, Water Treatment device 9, high pressure bleeder heater 10; It is characterized in that, also comprise industrial steam turbine 12, open-type heat pump 13, heat exchanger 14, its annexation is: the outlet of boiler 1 links to each other with the inlet of extraction turbine 2, the outlet 21 of extraction turbine 2 is the primary outlet of the steam that is used to generate electricity, link to each other with the heat inlet 31 of condenser 3, the heat of condenser 3 outlet 32 links to each other with the inlet of condensate pump 6, the cold outlet 33 of condenser 3 links to each other with open-type heat pump 13 cold inlets 131 with the inlet of cooling tower 4 respectively, the outlet of 13 cold outlets 132 of open-type heat pump and cooling tower 4 all links to each other with the inlet of water circulating pump 5, the outlet of water circulating pump 5 links to each other with the cold inlet 34 of condenser 3, the outlet of condensate pump 6 successively with low pressure bleeder heater 7, oxygen-eliminating device 8, high pressure bleeder heater 10 links to each other, and the outlet of high pressure bleeder heater 10 links to each other with the inlet of boiler; Oxygen-eliminating device 8 also links to each other with Water Treatment device 9; The extraction opening 22 of extraction turbine 2 is an extraction opening, link to each other with the inlet of industrial steam turbine 12, the outlet of industrial steam turbine 12 links to each other with the heat inlet 141 of heat exchanger 14, the heat of heat exchanger 14 outlet 142 links to each other with the inlet of condensate pump 6, the cold inlet 143 of heat exchanger 14 links to each other with the heat of open-type heat pump 13 outlet 134, the heat of open-type heat pump 13 inlet 133 links to each other with the heating network backwater, and the cold outlet 144 of heat exchanger 14 links to each other with heating network water supply.Industrial steam turbine 12 links to each other with open-type heat pump 13 by (himself has) shaft joint.
Its course of work is: the steam of extracting out from the extraction opening of extraction turbine enters industrial steam turbine, industrial steam turbine drives the open-type source pump, the cold import that the cooling circulating water that is come out by the cold outlet of condenser enters the open-type heat pump, come out to get back to condenser from the cold outlet of heat pump after being cooled by water circulating pump, backwater enters heat pump from the hot import of heat pump once more, be heated and enter heat exchanger after back heat from heat pump exports out, come out to enter the heat supply network heat supply after the heating once more.Like this, can reclaim by heat pump on the one hand and be recycled the energy (heat energy in the exhaust steam that can not do manual work again just) that cooling water is taken away, directly drive heat pump with steam on the other hand, energy part in the exhaust steam is used to heat the recirculated water of heating network, another part is along with condensed water is got back in the boiler, do not have energy to be discharged in vain, make the thermal loss minimum.
The embodiment of capital equipment of the present invention is respectively described below:
1) boiler 1: power plant has boiler now
2) extraction turbine 2: the existing steam turbine of power plant, extract the steam turbine that steam is supplied with hot user out from intergrade, and extraction pressure is decided according to user's the needs and the requirement of product line, can adjust within the specific limits.
3) condenser 3, cooling tower 4, water circulating pump 5, condensate pump 6, low pressure bleeder heater 7, oxygen-eliminating device 8, Water Treatment device 9, high pressure bleeder heater 10 are the existing equipment of power plant.
4) industrial steam turbine 12, are the rotary power machinery that the power conversion of steam is become mechanical power, are conventional heat supply products, and himself has shaft joint.
5) the open-type heat pump 13:
Heat pump is the principle according to contrary Carnot cycle, by importing a spot of high-grade energy, from a kind of device of occurring in nature extraction low-grade energy, is a kind of matured product.
6) heat exchanger 14:
A kind of heat exchanger is matured product, can utilize water that steam is cooled to water by it.
Claims (1)
1. heating system of utilizing the steam drive heat pump of extracting out in the extraction turbine, this system mainly comprises: boiler, extraction turbine, condenser, cooling tower, water circulating pump, condensate pump, low pressure bleeder heater, oxygen-eliminating device, Water Treatment device, high pressure bleeder heater; It is characterized in that, also comprise industrial steam turbine, the open-type heat pump, heat exchanger, wherein: the outlet of boiler links to each other with the inlet of extraction turbine, the primary outlet of extraction turbine links to each other with the heat of condenser inlet, the heat outlet of condenser links to each other with the inlet of condensate pump, the cold outlet of condenser links to each other with the cold inlet of open-type heat pump with the inlet of cooling tower respectively, the outlet of cold outlet of open-type heat pump and cooling tower 4 all links to each other with the inlet of water circulating pump, the recirculated water delivery side of pump links to each other with the cold inlet of condenser, the condensate water delivery side of pump successively with the low pressure bleeder heater, oxygen-eliminating device, the high pressure bleeder heater links to each other, and the outlet of high pressure bleeder heater links to each other with the inlet of boiler; Oxygen-eliminating device also links to each other with the Water Treatment device; The extraction opening of extraction turbine links to each other with the industrial steam turbine inlet, the industrial steam turbine outlet links to each other with the heat inlet of heat exchanger, the heat outlet of heat exchanger links to each other with the inlet of condensate pump, the cold inlet of heat exchanger links to each other with the outlet of the heat of open-type heat pump, the heat inlet of open-type heat pump links to each other with the heating network backwater, and the cold outlet of heat exchanger is supplied water with heating network and linked to each other; Industrial steam turbine links to each other with the open-type heat pump by shaft joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010165574 CN101871674A (en) | 2010-04-30 | 2010-04-30 | System for supplying heat by utilizing steam extracted from extraction steam turbine to drive heat pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010165574 CN101871674A (en) | 2010-04-30 | 2010-04-30 | System for supplying heat by utilizing steam extracted from extraction steam turbine to drive heat pump |
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| CN101871674A true CN101871674A (en) | 2010-10-27 |
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| CN 201010165574 Pending CN101871674A (en) | 2010-04-30 | 2010-04-30 | System for supplying heat by utilizing steam extracted from extraction steam turbine to drive heat pump |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881437A (en) * | 2010-06-11 | 2010-11-10 | 北京中科华誉能源技术发展有限责任公司 | System for heating condensate water by extracting residual heat of power plant through heat pump |
| CN102410053A (en) * | 2011-11-17 | 2012-04-11 | 北京中科华誉能源技术发展有限责任公司 | Steam exhaust direct recycling system for absorption type waste heat recycling of water cooling thermal power plant |
| CN102519176A (en) * | 2011-12-03 | 2012-06-27 | 苏州方暨圆节能科技有限公司 | High-efficiency energy-saving composite heat pump |
| CN107091586A (en) * | 2017-03-15 | 2017-08-25 | 浙江大学 | Boiler fired coal electricity generation system with double tank heat storage type generating adjustments |
| CN107120713A (en) * | 2017-06-16 | 2017-09-01 | 华电郑州机械设计研究院有限公司 | A kind of anti-overtemperature cooling system of high back pressure thermal power plant unit condensate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201059819Y (en) * | 2007-07-12 | 2008-05-14 | 北京开源铭典技术有限公司 | Steam turbine driven open-type heat pump device |
| CN201779764U (en) * | 2010-04-30 | 2011-03-30 | 北京中科华誉能源技术发展有限责任公司 | Heat supply system by utilizing extracted steam in bleeder turbine to drive heat pump |
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2010
- 2010-04-30 CN CN 201010165574 patent/CN101871674A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201059819Y (en) * | 2007-07-12 | 2008-05-14 | 北京开源铭典技术有限公司 | Steam turbine driven open-type heat pump device |
| CN201779764U (en) * | 2010-04-30 | 2011-03-30 | 北京中科华誉能源技术发展有限责任公司 | Heat supply system by utilizing extracted steam in bleeder turbine to drive heat pump |
Non-Patent Citations (3)
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| 《区域供热》 20081231 吴星等 电厂循环水供热技术的研究与应用 4－6 , 2 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881437A (en) * | 2010-06-11 | 2010-11-10 | 北京中科华誉能源技术发展有限责任公司 | System for heating condensate water by extracting residual heat of power plant through heat pump |
| CN102410053A (en) * | 2011-11-17 | 2012-04-11 | 北京中科华誉能源技术发展有限责任公司 | Steam exhaust direct recycling system for absorption type waste heat recycling of water cooling thermal power plant |
| CN102519176A (en) * | 2011-12-03 | 2012-06-27 | 苏州方暨圆节能科技有限公司 | High-efficiency energy-saving composite heat pump |
| CN107091586A (en) * | 2017-03-15 | 2017-08-25 | 浙江大学 | Boiler fired coal electricity generation system with double tank heat storage type generating adjustments |
| CN107120713A (en) * | 2017-06-16 | 2017-09-01 | 华电郑州机械设计研究院有限公司 | A kind of anti-overtemperature cooling system of high back pressure thermal power plant unit condensate |
| CN107120713B (en) * | 2017-06-16 | 2022-09-13 | 华电郑州机械设计研究院有限公司 | High back pressure heat supply unit condensate water prevents super temperature cooling system |
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Owner name: SHENYANG HUAYU GROUND SOURCE HEAT PUMP HEATING CO. Free format text: FORMER OWNER: BEIJING ZHONGKE HUAYU ENERGY TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20110916 |
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Free format text: CORRECT: ADDRESS; FROM: 100190 HAIDIAN, BEIJING TO: 110027 SHENYANG, LIAONING PROVINCE |
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Effective date of registration: 20110916 Address after: 110027 Shenyang City Yuhong District Ji Li Lake Street No. 36-4 3-3-8 Applicant after: Shenyang Huayu Ground-Source Heat Pump Heating Co., Ltd. Address before: 100190 Beijing, Zhongguancun, building two, floor 333, No. Applicant before: Beijing Zhongke Huayu Energy Technology Development Co., Ltd. |
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Open date: 20101027 |