CN209960462U - Device for heating boiler feed water by utilizing heat pump to absorb waste heat of steam turbine - Google Patents
Device for heating boiler feed water by utilizing heat pump to absorb waste heat of steam turbine Download PDFInfo
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- CN209960462U CN209960462U CN201920883379.3U CN201920883379U CN209960462U CN 209960462 U CN209960462 U CN 209960462U CN 201920883379 U CN201920883379 U CN 201920883379U CN 209960462 U CN209960462 U CN 209960462U
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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
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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Abstract
The utility model relates to a device for heating boiler feed water by utilizing a heat pump to absorb waste heat of a steam turbine, in order to solve the problem that heat is wasted due to the heat dissipation of a cooling tower by circulating cooling water discharged by the steam turbine in non-heating seasons, the utility model comprises a condenser, a shaft seal heater, a first heater, a second heater, a deaerator, a heat pump system and a cooling tower; the heat pump system comprises a condenser, a compressor, an evaporator and a valve; the steam inlet end of condenser inner loop passes through the tube coupling with the steam exhaust end of steam turbine, and the play water end of condenser inner loop passes through the pipeline intercommunication with the entry end of bearing seal heater, and the exit end of bearing seal heater passes through the pipeline intercommunication with the entry end of first heater, and first heater and second heater intercommunication, second heater and oxygen-eliminating device intercommunication, the exit end and the boiler feed water mechanism of oxygen-eliminating device pass through the pipeline intercommunication, the utility model is used for the thermal power generation field.
Description
Technical Field
The utility model relates to a heat pump feedwater heating device, concretely relates to utilize heat pump absorption steam turbine waste heat to carry out the device that heats to boiler feedwater.
Background
With the development of modern science and technology, energy conservation and emission reduction become the focus of attention, the surplus energy utilization space in the industrial field of China is large, and a large amount of heat energy is contained in industrial cooling water, industrial wastewater and geothermal tail water, but the waste heat is almost completely discarded due to low grade and difficult extraction. Thermal power plants, coal, steel, chemical industry, petroleum, food, printing and dyeing and other industries have a large amount of energy consumption and release. In the process of power generation of thermal power plants around cities, a large amount of low-grade heat is discharged to the atmosphere through a cooling tower, so that huge energy waste and obvious environmental damp-heat influence are caused. Therefore, if the waste heat of the circulating cooling water can be fully utilized, not only can the water evaporation loss and the environmental heat pollution caused by the heat dissipation of the cooling water of the power plant be reduced, but also the situation that the gas and the electric power resources are in shortage due to heating can be relieved. Meanwhile, the cascade utilization of energy is realized, a large amount of fuel is saved, and the comprehensive utilization rate of the energy is improved. The condenser of the steam turbine in the thermal power generation equipment has the functions of condensing the exhaust steam of the steam turbine into condensed water and enabling the interior of the condenser to be in a vacuum state, and the condensed water is pumped to the steam generator through the condensed water for recycling. However, the circulating cooling water used to cool the turbine exhaust is wasted heat by relying on the cooling tower to dissipate heat. The main purpose of the invention is to recover the heat lost by the heat pump technology and use the heat to heat the boiler feed water. The prior art is only limited to recovering the heat of circulating cooling water in heating seasons for heat supply, and the heat of circulating cooling water is completely dissipated by a cooling tower due to no heat supply requirement in non-heating seasons, so that great heat waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the recirculated cooling water of non-heating season cooling steam turbine exhaust, owing to rely on the cooling tower heat dissipation, cause the extravagant problem of heat, and then provide one kind and utilize the heat pump to absorb the device that the steam turbine waste heat carries out the heating to the boiler feedwater.
The utility model discloses a solve above-mentioned problem and the technical scheme who adopts is:
the device comprises a condenser, a shaft seal heater, a first heater, a second heater, a deaerator, a heat pump system and a cooling tower; the heat pump system comprises a condenser, a compressor, an evaporator and a valve; the steam inlet end of the internal circulation of the condenser is connected with the steam exhaust end of the steam turbine through a pipeline, the water outlet end of the internal circulation of the condenser is communicated with the inlet end of the shaft seal heater through a pipeline, the outlet end of the shaft seal heater is communicated with the inlet end of the first heater through a pipeline, the outlet end of the first heater is communicated with the inlet end of the second heater through a pipeline, the outlet end of the second heater is communicated with the inlet end of the deaerator, the outlet end of the deaerator is communicated with the boiler water supply mechanism through a pipeline,
the condenser is arranged on a pipeline between the outlet end of the shaft seal heater and the inlet end of the first heater and a pipeline between the outlet end of the compressor and the valve, the other water outlet end of the flow-dividing tee joint is communicated with the other inlet end of the flow-converging tee joint through a pipeline, and the evaporator is arranged on a pipeline connected with the inlet end of the compressor and the other water outlet end of the flow-dividing tee joint and a pipeline connected with the other inlet end of the flow-converging tee joint through a pipeline The above.
The utility model has the advantages that:
1. the absorption heat pump system is driven by waste heat by taking circulating cooling water of a power plant as a heat source, and the heat pump system ensures the temperature difference between the supply water and the return water of the circulating cooling water to meet the vacuum requirement of a condenser by adjusting the circulating water quantity in a mode of connecting a condenser and a cooling tower in parallel. The heat pump system is installed behind the shaft seal heater to prevent cavitation of the condensate pump. The heat of the circulating cooling water of the power plant is recovered to be used for heating the boiler feed water, the boiler feed water is not limited by a heating period and a non-heating period, and the boiler feed water can be operated all the year round, so that the energy is saved, and the waste of the energy is reduced.
Drawings
Fig. 1 is a schematic view of the connection of the whole structure of the present application, wherein the direction of arrows is the flow direction of water vapor, water or medium.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1, and the apparatus for heating boiler feed water by using a heat pump to absorb waste heat of a steam turbine according to the present embodiment includes a condenser 1, a shaft seal heater 2, a first heater 4, a second heater 5, a deaerator 6, a heat pump system, and a cooling tower 7; the heat pump system comprises a condenser 3, a compressor 8, an evaporator 9 and a valve 10; the steam inlet end of the internal circulation of the condenser 1 is connected with the steam exhaust end of the steam turbine through a pipeline, the water outlet end of the internal circulation of the condenser 1 is communicated with the inlet end of the shaft seal heater 2 through a pipeline, the outlet end of the shaft seal heater 2 is communicated with the inlet end of the first heater 4 through a pipeline, the outlet end of the first heater 4 is communicated with the inlet end of the second heater 5 through a pipeline, the outlet end of the second heater 5 is communicated with the inlet end of the deaerator 6, the outlet end of the deaerator 6 is communicated with the boiler water supply mechanism through a pipeline,
a shunting tee joint is arranged at the water outlet end of the external circulation of the condenser 1, the water outlet end of the external circulation of the condenser 1 is communicated with the inlet end of the shunting tee joint, one outlet end of the shunting tee joint is communicated with the inlet end of the cooling tower 7, a converging tee joint is arranged at the outlet end of the cooling tower 7, the outlet end of the cooling tower 7 is communicated with one inlet end of the converging tee joint, the outlet end of the converging tee joint is communicated with the water return end of the external circulation of the condenser 1 through a pipeline, a compressor 8 is communicated with a valve 10 through a circulating pipeline, a condenser 3 is arranged on the pipeline between the outlet end of a shaft seal heater 2 and the inlet end of a first heater 4 and the pipeline between the outlet end of the compressor 8 and the valve 10, the other water outlet end of the shunting tee joint is communicated with the other inlet end of the converging tee joint through a pipeline, and an evaporator 9 is arranged on the pipeline between the inlet The other inlet end of the three-way joint is connected with a pipeline.
The second embodiment is as follows: referring to fig. 1, the present embodiment will be described, in which the heat pump absorbs the waste heat of the steam turbine to heat the boiler feed water, the valve 10 is a throttle regulating valve, and the flow rate of the circulating medium between the compressor 8 and the condenser 3 and the evaporator 9 in the heat pump system is regulated by the throttle regulating valve, and other methods are the same as those in the first embodiment.
The third concrete implementation mode: the present embodiment will be described with reference to fig. 1, and the first heater 4 is a low-pressure heater in the apparatus for heating boiler feed water by absorbing the exhaust heat of the steam turbine by the heat pump according to the present embodiment. The other methods are the same as those in the first embodiment.
The fourth concrete implementation mode: the present embodiment will be described with reference to fig. 1, in which the second heater 5 is a high-pressure heater, and the heat pump of the present embodiment absorbs the exhaust heat of the steam turbine to heat the boiler feed water. The other methods are the same as those in the first embodiment.
The fifth concrete implementation mode: the present embodiment will be described with reference to fig. 1, and the apparatus for heating boiler feed water by absorbing the waste heat of the steam turbine with the heat pump according to the present embodiment further includes a condensate pump 11, and the condensate pump 11 is installed on a pipeline between the condenser 1 and the shaft seal heater 2. The other methods are the same as those in the first embodiment.
Principle of operation
This application during operation steam turbine exhaust steam gets into condenser 1 in and cools down, the internal circulating water after will cooling heats through bearing seal heater 2, and heat again the water through bearing seal heater 2 through condenser 3, and heat the water after will heating in flowing into first heater 4 and second heater 5 in proper order, the internal circulating water flows into among the water supply system of boiler at last, external circulating water flows into cooling tower 7 and evaporimeter 9 respectively in the condenser 1 simultaneously, the external circulating water that flows into cooling tower 7 cools down and flows back to the external circulating water of condenser 1, the water that flows into evaporimeter 9 carries out the heat exchange through evaporimeter 9 and the water in compressor 8 entry end and the valve 10 connecting line, and heat the water in compressor 8 entry end and the valve 10 connecting line, and the effect that the circulating medium between compressor 8 and valve 10 flows down the exit end of bearing seal heater 2 and the first heater 4 pipeline in the axle The water is heated by heat exchange, and the purpose of the application is further achieved.
Claims (5)
1. The utility model provides an utilize heat pump absorption steam turbine waste heat to carry out device that heats boiler feed water which characterized in that: the device comprises a condenser (1), a shaft seal heater (2), a first heater (4), a second heater (5), a deaerator (6), a heat pump system and a cooling tower (7); the heat pump system comprises a condenser (3), a compressor (8), an evaporator (9) and a valve (10); the steam inlet end of the internal circulation of the condenser (1) is connected with the steam exhaust end of the steam turbine through a pipeline, the water outlet end of the internal circulation of the condenser (1) is communicated with the inlet end of the shaft seal heater (2) through a pipeline, the outlet end of the shaft seal heater (2) is communicated with the inlet end of the first heater (4) through a pipeline, the outlet end of the first heater (4) is communicated with the inlet end of the second heater (5) through a pipeline, the outlet end of the second heater (5) is communicated with the inlet end of the deaerator (6), the outlet end of the deaerator (6) is communicated with the boiler water supply mechanism through a pipeline,
a water outlet end of the external circulation of the condenser (1) is provided with a shunt three-way joint, the water outlet end of the external circulation of the condenser (1) is communicated with an inlet end of the shunt three-way joint, one outlet end of the shunt three-way joint is communicated with an inlet end of a cooling tower (7), an outlet end of the cooling tower (7) is provided with a confluence three-way joint, an outlet end of the cooling tower (7) is communicated with an inlet end of the confluence three-way joint, an outlet end of the confluence three-way joint is communicated with a water return end of the external circulation of the condenser (1) through a pipeline, a compressor (8) is communicated with a valve (10) through a circulation pipeline, a condenser (3) is arranged on a pipeline between the outlet end of a shaft seal heater (2) and the inlet end of a first heater (4) and a pipeline between the outlet end of the compressor (8) and the valve (10), and the other water, the evaporator (9) is arranged on a pipeline connecting the inlet end of the compressor (8) with the valve (10) and a pipeline connecting the other water outlet end of the flow dividing three-way joint with the other inlet end of the confluence three-way joint.
2. The apparatus for heating boiler feed water by using heat pump to absorb waste heat of steam turbine according to claim 1, wherein: the valve (10) is a throttle regulating valve.
3. The apparatus for heating boiler feed water by using heat pump to absorb waste heat of steam turbine according to claim 1, wherein: the first heater (4) is a low pressure heater.
4. The apparatus for heating boiler feed water by using heat pump to absorb waste heat of steam turbine according to claim 1, wherein: the second heater (5) is a high-pressure heater.
5. The apparatus for heating boiler feed water by using heat pump to absorb waste heat of steam turbine according to claim 1, wherein: the steam condenser also comprises a condensate pump (11), wherein the condensate pump (11) is arranged on a pipeline between the steam condenser (1) and the shaft seal heater (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920883379.3U CN209960462U (en) | 2019-06-12 | 2019-06-12 | Device for heating boiler feed water by utilizing heat pump to absorb waste heat of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920883379.3U CN209960462U (en) | 2019-06-12 | 2019-06-12 | Device for heating boiler feed water by utilizing heat pump to absorb waste heat of steam turbine |
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| Publication Number | Publication Date |
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| CN209960462U true CN209960462U (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920883379.3U Active CN209960462U (en) | 2019-06-12 | 2019-06-12 | Device for heating boiler feed water by utilizing heat pump to absorb waste heat of steam turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607479A (en) * | 2022-03-17 | 2022-06-10 | 西安热工研究院有限公司 | Energy storage peak shaving system for recovering waste heat of thermal power system of thermal power plant |
-
2019
- 2019-06-12 CN CN201920883379.3U patent/CN209960462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607479A (en) * | 2022-03-17 | 2022-06-10 | 西安热工研究院有限公司 | Energy storage peak shaving system for recovering waste heat of thermal power system of thermal power plant |
| CN114607479B (en) * | 2022-03-17 | 2023-11-07 | 西安热工研究院有限公司 | Energy storage peak regulation system for recovering waste heat of thermal power plant thermodynamic system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201221 Address after: 100089 room 705, 7 / F, Yinhai building, No.10, Zhongguancun South Street, Haidian District, Beijing Patentee after: BEIJING KELIJIE ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co.,Ltd. Patentee after: NORTH UNITED POWER Co.,Ltd. Patentee after: Xilinguole Thermal Power Co.,Ltd. Address before: 100081 room 705, 7 / F, Yinhai building, No.10, Zhongguancun South Street, Haidian District, Beijing Patentee before: BEIJING KELIJIE ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |