CN201866832U - Steam turbine bearing cooling water heat pump heating system of power plant - Google Patents
Steam turbine bearing cooling water heat pump heating system of power plant Download PDFInfo
- Publication number
- CN201866832U CN201866832U CN 201020616192 CN201020616192U CN201866832U CN 201866832 U CN201866832 U CN 201866832U CN 201020616192 CN201020616192 CN 201020616192 CN 201020616192 U CN201020616192 U CN 201020616192U CN 201866832 U CN201866832 U CN 201866832U
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- water
- steam turbine
- heat pump
- steam
- bearing cooling
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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]
- Y02B30/12—Hot water central heating systems using heat pumps
Abstract
The utility model belong to the field of energy sources, and relates to a bearing cooling water heat pump heating system of power plant and a method. The system consists of a steam turbine, a steam turbine bearing cooling system, a steam absorption heat pump, a water-water heat exchanger, a low-pressure heater, a heater for heating network as well as corresponding pipes and auxiliary apparatuses. In the system, the bearing cooling water of the power plant is used as the low-temperature heat source of the absorption heat pump; the medium-pressure steam that did work in the steam turbine unit is used as the driving heat source of the heat pump; the driving heat source is used for heating the evaporator of the absorption heat pump; the medium-pressure steam is condensed after heat exchanging, and then the condensed water is supplied to the corresponding low-pressure regenerative heater of the regenerative system of the steam turbine unit as the boiler feed water; the heat of the high-temperature heat source obtained by the heat pump system is supplied to users independently or/and in combination with the conventional cogeneration system in winter, and is used for heating the condensed water of the steam turbine unit through the regenerative heater in summer so as to improve the temperature of the boiler feed water.
Description
Technical field
The utility model belongs to energy field, be particularly related to a kind of heating system of power plant steam turbine bearing cooling water heat pump, this system is by the work of power plant steam turbine bearing cooling water heat pump, reduce power plant steam turbine group bearing temperature and realized the safe operation of unit, on the other hand the heat that obtains is outwards exported heat supply by heat pump, realize the cascade utilization of energy, improved the heat-economy of Steam Turbine system.
Background technology
The bearing cooling of Thermal Power Station's Steam Turbine is one of problem that influences unit operation safety, and during the steam turbine high speed operation, friction can produce a large amount of heats in the bearing, if bearing temperature is too high, can cause the vibration even the shutdown of unit.By the continuous circular flow kinetic energy of the lubricating oil system in the bearing these heats are taken away in the unit operation, lubricating oil is cooled off by other cooling water system then, thereby unit operation is played the heat radiation cooling effect.In the actual motion, the cooling water system here needs external environment to cool off the reduction temperature, and a large amount of heats is lost in the environment, on the other hand, summer, cooling effect was poor owing to the environment temperature height, and bearing cools off the operation that frequent poor effect influences whole Steam Turbine.
The utility model content
The purpose of this utility model is the safety that directly influences unit operation at the bearing cooling of Thermal Power Station's Steam Turbine in the prior art, particularly summer is because the environment temperature height, cooling effect is poor, bearing cools off the operation that frequent poor effect influences whole Steam Turbine, a large amount of heats is lost to the deficiency in the environment simultaneously, proposes a kind of power plant steam turbine group bearing cooling water heat pump heating system.
A kind of power plant steam turbine group bearing cooling water heat pump heating system is characterized in that this system comprises steam turbine, steam turbine bearing cooling system, steam absorption heat pump, water water-to-water heat exchanger, low-pressure heater and heat exchangers for district heating; The arbor of the steam turbine 1 of this system connects steam turbine bearing cooling system 3, and steam turbine bearing cooling system 3 connects the evaporimeter 7-2 of steam absorption heat pump 7 by the recirculated cooling water pipeline; Drawing gas of steam turbine 1 connects the generator 7-1 of steam absorption heat pump 7 by pipeline, the cooling back forms among the generator 7-1 hydrophobic passes through the feedwater side that drain water piping is connected to the low-pressure heater 6 of Steam Turbine Regenerative System; The water supply end of the condenser 7-4 of steam absorption heat pump 7 connects Water-supplying tee joint valve 9, a road of Water-supplying tee joint valve 9 connect to be supplied with hot user's 11 heat exchangers for district heating 10, condenser 7-4 the backwater end connect the heat exchangers for district heating 10 of supplying with hot users 11 by backwater triple valve 8 and form water-flow circuits; Water-supplying tee joint valve 9 and backwater triple valve 8 are connected the water water-to-water heat exchanger 5 high-temperature water lateral line two ends of Steam Turbine Regenerative System respectively; The two ends of the water at low temperature side of the water water-to-water heat exchanger 5 of Steam Turbine Regenerative System connect the bleeder heater water side of feedwater side with the relevant corresponding temperature of condensate pump 4 sides of low-pressure heater 6 respectively.
The beneficial effects of the utility model are on the one hand to have reduced the safe operation that power plant steam turbine group bearing temperature has been realized unit, the heat that obtains in the heat pump high temperature heat source is outwards supplied with hot user in winter on the other hand, the condensate water raising boiler feed temperature in summer by heat exchanger heating Steam Turbine.
Description of drawings
Fig. 1 is the heating system version schematic diagram of power plant steam turbine group bearing cooling water heat pump.
Among the figure: the 1st, steam turbine, the 2nd, condenser, the 3rd, steam turbine bearing cooling system, the 4th, condensate pump, the 5th, water water-to-water heat exchanger, the 6th, low-pressure heater, the 7th, steam absorption heat pump, the 8th, backwater triple valve, the 9th, Water-supplying tee joint valve, the 10th, heat exchangers for district heating, the 11st, hot user, 7-1 are generators, and 7-2 is an evaporimeter, 7-3 is a throttling arrangement, and 7-4 is a condenser.
The specific embodiment
The utility model proposes a kind of power plant steam turbine group bearing cooling water heat pump heating system.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the heating system version schematic diagram of power plant steam turbine group bearing cooling water heat pump, this system comprises steam turbine, condenser, steam turbine bearing cooling system, steam absorption heat pump, condensate pump, water water-to-water heat exchanger, low-pressure heater, supplies backwater triple valve, heat exchangers for district heating and auxiliary device etc., adopts corresponding pipeline to connect to form.
Concrete workflow is as follows: the steam discharge of steam turbine 1 enters in the condenser 2 and is condensed into water, is sent to boiler as feedwater after the heat regenerative system of compositions such as condensate pump 4, low-pressure heater 6; Liberated heat is by 3 coolings of steam turbine bearing cooling system in rotating at a high speed for steam turbine 1, and recirculated water cooling pipeline connects the low-temperature heat source of the evaporimeter 7-2 of steam absorption heat pump 7 as absorption heat pump 7; Do drawing gas of merit in the steam turbine 1 and connected the generator 7-1 of steam absorption heat pump 7 by pipeline, this steam is as the driving heat source of absorption heat pump 7, be cooled after the steam heat release, the hydrophobic of cooling formation is connected to the part of the low-pressure heater 6 of Steam Turbine Regenerative System as boiler feedwater by drain water piping; Condenser 7-4 is the high temperature heat source of steam absorption heat pump 7, and it emits heat to the external world, and the high-temperature water among the condenser 7-4 connects Water-supplying tee joint valve 9; In winter, by the switching of Water-supplying tee joint valve 9, the high-temperature water that steam absorption heat pump 7 produces is supplied with heat exchangers for district heating 10 and is further supplied with hot user and is used for heating; In summer, by the switching of Water-supplying tee joint valve 9, the high-temperature water that steam absorption heat pump 7 produces is by the feedwater of water water-to-water heat exchanger 5 heating Steam Turbine Regenerative System; Heat exchangers for district heating 10 and heater 5 all are the water water-to-water heat exchangers, and its backwater all connects backwater triple valve 8, and the condenser 7-4 by triple valve connection steam absorption heat pump 7 forms water-flow circuit; Throttling arrangement 7-3 is connected the end of condenser 7-4 and evaporimeter 7-2, and generator 7-1 is connected the other end of condenser 7-4 and evaporimeter 7-2.
At last, it is also to be noted that what more than enumerate only is specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, and many distortion can also be arranged.Therefore, above-mentioned embodiment of the present utility model all can only be thought can not limit the utility model to explanation of the present utility model, and claims have been pointed out scope of the present utility model, and scope of the present utility model is not all pointed out in above-mentioned explanation.Therefore, in implication suitable and any change in the scope, all should think to be included in the scope of claims with claims of the present utility model.
Claims (1)
1. the heating system of power plant's bearing cooling water heat pump is characterized in that, this system comprises steam turbine, steam turbine bearing cooling system, steam absorption heat pump, water water-to-water heat exchanger, low-pressure heater and heat exchangers for district heating; The arbor of the steam turbine of this system (1) connects steam turbine bearing cooling system (3), and steam turbine bearing cooling system (3) connects the evaporimeter (7-2) of steam absorption heat pump (7) by the recirculated cooling water pipeline; Drawing gas of steam turbine (1) connects the generator (7-1) of steam absorption heat pump (7), the hydrophobic feedwater side that is connected to the low-pressure heater (6) of Steam Turbine Regenerative System by drain water piping of generator (7-1) by pipeline; The water supply end of the condenser (7-4) of steam absorption heat pump (7) connects Water-supplying tee joint valve (9), a road of Water-supplying tee joint valve (9) connects the heat exchangers for district heating (10) of supplying with hot user (11), and the backwater end of condenser (7-4) connects the heat exchangers for district heating (10) of supplying with hot user (11) by backwater triple valve (8) and forms the loop; By the control of triple valve, in another loop, backwater triple valve (8) and Water-supplying tee joint valve (9) are connected water water-to-water heat exchanger (5) the high temperature heat release side of Steam Turbine Regenerative System respectively; The two ends of water water-to-water heat exchanger (5) the water at low temperature side of Steam Turbine Regenerative System connect the feed-water inlet of low-pressure heater (6) and the bleeder heater water side of the relevant corresponding temperature of condensate pump (4) side respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020616192 CN201866832U (en) | 2010-11-18 | 2010-11-18 | Steam turbine bearing cooling water heat pump heating system of power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020616192 CN201866832U (en) | 2010-11-18 | 2010-11-18 | Steam turbine bearing cooling water heat pump heating system of power plant |
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| Publication Number | Publication Date |
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| CN201866832U true CN201866832U (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020616192 Expired - Fee Related CN201866832U (en) | 2010-11-18 | 2010-11-18 | Steam turbine bearing cooling water heat pump heating system of power plant |
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| CN (1) | CN201866832U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052702A (en) * | 2010-11-18 | 2011-05-11 | 华北电力大学 | Heating system and method by using power plant steam turbine bearing cooling water through heat pump |
| CN102278786A (en) * | 2011-08-13 | 2011-12-14 | 双良节能系统股份有限公司 | Central heating system using waste heat of direct air cooling power plant |
| CN105298565A (en) * | 2015-11-06 | 2016-02-03 | 中国科学院工程热物理研究所 | Variable working condition active-control light-coal complementation indirect air-cooling generation system and method |
-
2010
- 2010-11-18 CN CN 201020616192 patent/CN201866832U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052702A (en) * | 2010-11-18 | 2011-05-11 | 华北电力大学 | Heating system and method by using power plant steam turbine bearing cooling water through heat pump |
| CN102052702B (en) * | 2010-11-18 | 2013-01-16 | 华北电力大学 | Heating method by using power plant steam turbine bearing cooling water through heat pump |
| CN102278786A (en) * | 2011-08-13 | 2011-12-14 | 双良节能系统股份有限公司 | Central heating system using waste heat of direct air cooling power plant |
| CN102278786B (en) * | 2011-08-13 | 2013-11-27 | 双良节能系统股份有限公司 | Central heating system using waste heat of direct air cooling power plant |
| CN105298565A (en) * | 2015-11-06 | 2016-02-03 | 中国科学院工程热物理研究所 | Variable working condition active-control light-coal complementation indirect air-cooling generation system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20131118 |