CN203051143U - Cooling system capable of improving capacity of water ring vacuum pump - Google Patents
Cooling system capable of improving capacity of water ring vacuum pump Download PDFInfo
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- CN203051143U CN203051143U CN 201220645683 CN201220645683U CN203051143U CN 203051143 U CN203051143 U CN 203051143U CN 201220645683 CN201220645683 CN 201220645683 CN 201220645683 U CN201220645683 U CN 201220645683U CN 203051143 U CN203051143 U CN 203051143U
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Abstract
The utility model discloses a cooling system capable of improving the capacity of a water ring vacuum pump, in order to solve the problem that when a refrigerating unit in the cooling system of the water ring vacuum pump malfunctions, adverse effects can be generated to safety operation of a power generating unit of a power plant. The cooling system capable of improving the capacity of the water ring vacuum pump comprises a water ring vacuum pump, a refrigerating unit, a steam-water generator and a circulation cooling water heat exchanger; a working liquid pipe of the water ring vacuum pump is communicated with the steam-water separator; and the circulation cooling water heat exchanger is arranged on the working liquid pipe. The cooling system capable of improving the capacity of the water ring vacuum pump is characterized in that the working liquid pipe is connected with the circulation freezing water heat exchanger in series, and freezing water obtained by a refrigerating unit flows in a freezing water circulation pipeline of the circulation freezing water heat exchanger. The utility model provides two implementation schemes, the original circulation cooling water heat exchangers of the water ring vacuum pump is kept; through connecting the circulation freezing water heat exchanger in series or in parallel to the working liquid pipe of the water ring vacuum pump, the working liquid in the water ring vacuum pump is cooled further, the capacity of the water ring vacuum pump is improved, and meanwhile, the safety and economical running of the power generating unit of the power plant is also ensured at the same time.
Description
Technical field
The utility model relates to a kind of improved water ring vacuum pump system, particularly can improve the cooling system that water ring vaccum pump is exerted oneself.
Background technique
Thermal power generation unit vapour condenser generally all is equipped with vacuum pumping device and is used for getting rid of the incoagulable gas that enters vapour condenser, and using many at present is water ring vaccum pump.The impeller of water ring vaccum pump is installed in the pump housing prejudicially, is marked with the water of certain altitude in the pump as working solution, relies on the rotation of impeller constantly to finish processes such as air-breathing, compression and exhaust.In the course of the work, because acting is condensed with water vapour, the working solution temperature is constantly raise.The working solution temperature is elevated to the water vapor that to a certain degree can cause in the vacuum pump, and vacuum pump ties up the vacuum pump rate of air sucked in required because aspirating the gas that the vaporization of self working medium produces, and causes the vacuum pump wretched insufficiency of exerting oneself.Therefore need cool off working solution, guarantee that vacuum pump can reach desired performance index.At present working solution generally adopts power station open cycle cooling water or closed-type circulating cooling water cooling, but raises because of cooling water temperature summer, and the working solution temperature also raises, and makes vacuum pump declines of exerting oneself, and condenser vacuum descends, the increase of unit hear rate.Simultaneously because the working solution vaporization can influence equipment safety operation because of the vacuum pump impeller cavitation erosion.For addressing the above problem, application number is in 200820077554.1 Chinese patent " a kind of water ring vaccum pump that the improves condensing steam turbine efficient " file, the technology that a kind of cryogenic freezing water that adopts cooling machine set to produce cools off the vacuum pump working solution is disclosed, thereby reduced the temperature of working solution, above-mentioned engineering is transformed fairly simple.But the problem that exists is: when cooling machine set broke down maintenance, chilled water temperature constantly raise, and former cooling water pipeline has been cut off, needs the operations staff to switch to former cooling system in a short period of time.Like this, very unfavorable to the safe operation of power generator group, need further improvement.
The model utility content
The purpose of this utility model is the drawback at prior art, provides a kind of and can improve the cooling system that water ring vaccum pump is exerted oneself when guaranteeing the safe operation of power generator group.
Problem described in the utility model realizes with following technical proposals:
A kind ofly improve the cooling system that water ring vaccum pump is exerted oneself, it comprises water ring vaccum pump, cooling machine set, steam-water separator, recirculated cooling water heat exchanger, the working solution pipe of described water ring vaccum pump is communicated with steam-water separator, the recirculated cooling water heat exchanger is arranged on the working solution pipe, specialization is, series circulation chilled water heat exchanger on the described working solution pipe, the chilled water that is flowing and produced by cooling machine set in the chilled water circulation loop of circulating frozen water-to-water heat exchanger.
A kind ofly improve the cooling system that water ring vaccum pump is exerted oneself, it comprises water ring vaccum pump, cooling machine set, steam-water separator, the recirculated cooling water heat exchanger, the working solution pipe of described water ring vaccum pump is communicated with steam-water separator, the recirculated cooling water heat exchanger is arranged on the working solution pipe, specialization is, in working solution pipe advancing by the recirculated cooling water heat exchanger, outlet end circulated refrigerated water heat exchange in parallel branch road, circulated refrigerated water heat exchange branch road is provided with the circulating frozen water-to-water heat exchanger, the chilled water that is flowing and produced by cooling machine set in the chilled water circulation loop of circulating frozen water-to-water heat exchanger; In import and the outlet port of working solution pipe by the recirculated cooling water heat exchanger recirculated cooling water heat exchanger working solution inlet valve and recirculated cooling water heat exchanger working solution outlet valve are set respectively; By the import of circulating frozen water-to-water heat exchanger and outlet circulating frozen water-to-water heat exchanger working solution inlet valve and circulating frozen water-to-water heat exchanger working solution outlet valve are set respectively at circulated refrigerated water heat exchange branch road.
Above-mentionedly improve the cooling system that water ring vaccum pump is exerted oneself, be respectively equipped with chilled water inlet shutoff valve and chilled water outlet stop valve at outlet end and the entrance point of described chilled water circulation loop by the circulating frozen water-to-water heat exchanger.
Above-mentionedly improve the cooling system that water ring vaccum pump is exerted oneself, described chilled water circulation loop is provided with chilled water pump, and described chilled water circulation loop forms closed cycle by vaporizer, circulating frozen water-to-water heat exchanger, chilled water pump.
Above-mentionedly improve the cooling system that water ring vaccum pump is exerted oneself, described cooling machine set is made up of the refrigeration compressor, condenser, throttle valve and the vaporizer that are communicated with successively.
The utility model breaks down and can improve the power generator group safe operation problem of having a negative impact at cooling machine set in the existing water ring vaccum pump cooling system, its main feature is as follows: keep the original recirculated cooling water heat exchanger of water ring vaccum pump cooling system, on this basis, cryogenic freezing water-to-water heat exchanger of serial or parallel connection on water ring vaccum pump working solution pipe, the chilled water of described chilled water heat exchanger is produced by cooling machine set.When the cooling machine set proper functioning, by the effective steady decrease working solution of cryogenic freezing water-to-water heat exchanger temperature, improve exerting oneself of vacuum pump.In case cooling machine set breaks down or in the winter time, for the system of series connection cryogenic freezing water-to-water heat exchanger, original recirculated cooling water heat exchanger is being worked always; And for the system of cryogenic freezing water-to-water heat exchanger in parallel, then can control by valve, switch to original recirculated cooling water heat exchanger immediately working solution is lowered the temperature, to guarantee the normal cooling of vacuum pump working solution, therefore can not have a negative impact to the safe operation of power generator group.The utility model has guaranteed the safety and economic operation of power generator group when water ring vaccum pump working solution reinforcement cooling raising water ring vaccum pump is exerted oneself.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model first embodiment schematic diagram;
Fig. 2 is the utility model second embodiment schematic diagram.
Each list of reference numerals is among Fig. 1: 1. refrigeration compressor, 2. condenser, 3. throttle valve, 4. vaporizer, 5. chilled water pump, 6a. recirculated cooling water heat exchanger working solution inlet valve, 6b. recirculated cooling water heat exchanger working solution outlet valve, 6c. circulating frozen water-to-water heat exchanger working solution inlet valve, 6d. circulating frozen water-to-water heat exchanger working solution outlet valve, 7. working solution pipe, 8. water ring vaccum pump, 9. steam-water separator, 10. recirculated cooling water heat exchanger, 11. chiller plant cooling water pipeline, 12. chilled water circulation loop, 13. circulating frozen water-to-water heat exchanger, 14-1. chilled water inlet shutoff valve, 14-2. chilled water outlet stop valve.
Embodiment
Referring to Fig. 1, the utility model first embodiment comprises water ring vaccum pump 8, cooling machine set, steam-water separator 9, recirculated cooling water heat exchanger 10.The working solution pipe 7 of water ring vaccum pump is communicated with steam-water separator 9, the original recirculated cooling water heat exchanger 10 of system arranges on the working solution pipe, at the working solution pipe 7 circulating frozen water-to-water heat exchanger 13 of having connected, the chilled waters that flow and provided by cooling machine set in the chilled water circulation loop 12 by the circulating frozen water-to-water heat exchanger.Described cooling machine set is made up of the refrigeration compressor 1, condenser 2, throttle valve 3 and the vaporizer 4 that are communicated with successively, and chiller plant cooling water pipeline 11 is by condenser 2.Chilled water circulation loop 12 is provided with chilled water pump 5, and the chilled water circulation loop forms closed cycle by vaporizer 4, circulating frozen water-to-water heat exchanger 13, chilled water pump 5.
Still referring to Fig. 1, the working procedure of this embodiment is as follows: compressor 1 is discharged High Temperature High Pressure gaseous state refrigeration working medium and is entered condenser 2, become high-pressure liquid working medium after the heat release and enter throttle valve 3, low-temp low-pressure refrigeration working medium absorption refrigerating hydro-thermal amount in vaporizer 4 after the throttling.After chilled waters in the chilled water circulation loop 12 reduce through vaporizer 4 exothermic temperatures through chilled water pump 5, then by the water ring vaccum pump working solution in the circulating frozen water-to-water heat exchanger 13 cooling work liquid pipes 7, converge after the chilled water endothermic temperature raises and enter vaporizer 4 heat releases cooling again.When equipment failure maintenance or winter, cooling machine set out of service, then working solution is cooled by recirculated cooling water heat exchanger 10.
Referring to Fig. 2, the utility model second embodiment comprises water ring vaccum pump 8, cooling machine set, steam-water separator 9, recirculated cooling water heat exchanger 10.The working solution pipe 7 of water ring vaccum pump is communicated with steam-water separator 9, and the original recirculated cooling water heat exchanger 10 of system arranges on the working solution pipe.At the inlet/outlet end in parallel circulated refrigerated water heat exchange branch road of working solution pipe by recirculated cooling water heat exchanger 10, circulated refrigerated water heat exchange branch road is provided with circulating frozen water-to-water heat exchanger 13, the chilled water that flows and provided by cooling machine set in the chilled water circulation loop 12 of circulating frozen water-to-water heat exchanger.In import and the outlet port of working solution pipe by recirculated cooling water heat exchanger 10 recirculated cooling water heat exchanger working solution inlet valve 6a and recirculated cooling water heat exchanger working solution outlet valve 6b are set respectively; By the import of circulating frozen water-to-water heat exchanger 13 and outlet circulating frozen water-to-water heat exchanger working solution inlet valve 6c and circulating frozen water-to-water heat exchanger working solution outlet valve 6d are set respectively at circulated refrigerated water heat exchange branch road.In addition, be respectively equipped with chilled water inlet shutoff valve 14-1 and chilled water outlet stop valve 14-2 at entrance point and the outlet end of chilled water circulation loop 12 by the circulating frozen water-to-water heat exchanger.Described cooling machine set is made up of the refrigeration compressor 1, condenser 2, throttle valve 3 and the vaporizer 4 that are communicated with successively, and chiller plant cooling water pipeline 11 is by condenser 2.Chilled water circulation loop 12 is provided with chilled water pump 5, and the chilled water circulation loop forms closed cycle by vaporizer 4, circulating frozen water-to-water heat exchanger 13, chilled water pump 5.
Still referring to Fig. 2, the working procedure of this embodiment is as follows: under the summer normal working, compressor 1 is discharged High Temperature High Pressure gaseous state refrigeration working medium and is entered condenser 2, become high-pressure liquid working medium after the heat release and enter throttle valve 3, low-temp low-pressure refrigeration working medium absorption refrigerating hydro-thermal amount in vaporizer 4 after the throttling.After chilled waters in the chilled water circulation loop 12 reduce through vaporizer 4 exothermic temperatures through chilled water pump 5, then by the water ring vaccum pump working solution in the circulating frozen water-to-water heat exchanger 13 cooling work liquid pipes 7, converge after the chilled water endothermic temperature raises and enter vaporizer 4 heat releases cooling again.In this working state, recirculated cooling water heat exchanger working solution inlet valve 6a and recirculated cooling water heat exchanger working solution outlet valve 6b close, circulating frozen water-to-water heat exchanger working solution inlet valve 6c and circulating frozen water-to-water heat exchanger working solution outlet valve 6d and chilled water inlet shutoff valve 14-1 and chilled water outlet stop valve 14-2 open, and working solution is through the heat exchange of circulated refrigerated water heat exchange branch road.When equipment failure maintenance or winter, cooling machine set out of service, then working solution is cooled by recirculated cooling water heat exchanger 10.In this working state, recirculated cooling water heat exchanger working solution inlet valve 6a and recirculated cooling water heat exchanger working solution outlet valve 6b open, circulating frozen water-to-water heat exchanger working solution inlet valve 6c and circulating frozen water-to-water heat exchanger working solution outlet valve 6d and chilled water inlet shutoff valve 14-1 and chilled water outlet stop valve 14-2 close, and working solution is through 10 heat exchange of recirculated cooling water heat exchanger.
Claims (5)
1. one kind can be improved the cooling system that water ring vaccum pump is exerted oneself, it comprises water ring vaccum pump (8), cooling machine set, steam-water separator (9), recirculated cooling water heat exchanger (10), the working solution pipe (7) of described water ring vaccum pump is communicated with steam-water separator, the recirculated cooling water heat exchanger is arranged on the working solution pipe, it is characterized in that, described working solution pipe (7) is gone up series circulation chilled water heat exchanger (13), the chilled water that is flowing and produced by cooling machine set in the chilled water circulation loop (12) of circulating frozen water-to-water heat exchanger.
2. one kind can be improved the cooling system that water ring vaccum pump is exerted oneself, it comprises water ring vaccum pump (8), cooling machine set, steam-water separator (9), recirculated cooling water heat exchanger (10), the working solution pipe (7) of described water ring vaccum pump is communicated with steam-water separator, the recirculated cooling water heat exchanger is arranged on the working solution pipe, it is characterized in that, in working solution pipe advancing by recirculated cooling water heat exchanger (10), outlet end circulated refrigerated water heat exchange in parallel branch road, circulated refrigerated water heat exchange branch road is provided with circulating frozen water-to-water heat exchanger (13), the chilled water that flows and produced by cooling machine set in the chilled water circulation loop (12) of circulating frozen water-to-water heat exchanger; In import and the outlet port of working solution pipe by recirculated cooling water heat exchanger (10) recirculated cooling water heat exchanger working solution inlet valve (6a) and recirculated cooling water heat exchanger working solution outlet valve (6b) are set respectively; By the import of circulating frozen water-to-water heat exchanger (13) and outlet circulating frozen water-to-water heat exchanger working solution inlet valve (6c) and circulating frozen water-to-water heat exchanger working solution outlet valve (6d) are set respectively at circulated refrigerated water heat exchange branch road.
3. according to claim 2ly improve the cooling system that water ring vaccum pump is exerted oneself, it is characterized in that, be respectively equipped with chilled water inlet shutoff valve (14-1) and chilled water outlet stop valve (14-2) at outlet end and the entrance point of chilled water circulation loop (12) by circulating frozen water-to-water heat exchanger (13).
4. describedly improve the cooling system that water ring vaccum pump is exerted oneself according to claim 1 or 2 or 3, it is characterized in that, described chilled water circulation loop (12) is provided with chilled water pump (5), and described chilled water circulation loop forms closed cycle by vaporizer (4), circulating frozen water-to-water heat exchanger (13), chilled water pump (5).
5. according to claim 4ly improve the cooling system that water ring vaccum pump is exerted oneself, it is characterized in that described cooling machine set is made up of the refrigeration compressor (1), condenser (2), throttle valve (3) and the vaporizer (4) that are communicated with successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645683 CN203051143U (en) | 2012-11-30 | 2012-11-30 | Cooling system capable of improving capacity of water ring vacuum pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645683 CN203051143U (en) | 2012-11-30 | 2012-11-30 | Cooling system capable of improving capacity of water ring vacuum pump |
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| CN203051143U true CN203051143U (en) | 2013-07-10 |
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| CN 201220645683 Expired - Fee Related CN203051143U (en) | 2012-11-30 | 2012-11-30 | Cooling system capable of improving capacity of water ring vacuum pump |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953601A (en) * | 2016-06-30 | 2016-09-21 | 深圳市国电投资有限公司 | Power plant condenser vacuum maintaining unit provided with water chilling unit |
| CN107062934A (en) * | 2017-05-15 | 2017-08-18 | 华电电力科学研究院 | A kind of energy-conservation vacuumizes cooling system and method |
| CN108799130A (en) * | 2017-04-27 | 2018-11-13 | 上海漕泾热电有限责任公司 | It is a kind of that there is the water-ring vacuum pump for reducing sealing coolant-temperature gage |
| CN111828322A (en) * | 2020-06-29 | 2020-10-27 | 武汉助力节能环保技术服务有限公司 | Vacuumizing device for steam turbine condenser |
| CN111852870A (en) * | 2020-05-06 | 2020-10-30 | 中国电力工程顾问集团中南电力设计院有限公司 | Coal-fired power plant vacuum pump multistage cooling water system and cooling method |
| CN112414158A (en) * | 2019-08-22 | 2021-02-26 | 涟源钢铁集团有限公司 | Vacuum pump system, condenser vacuum system and control method thereof |
| CN113777507A (en) * | 2021-08-03 | 2021-12-10 | 中国民用航空飞行学院 | Thermal runaway vacuum cooling device under lithium ion battery variable-voltage environment |
| CN114308419A (en) * | 2020-09-30 | 2022-04-12 | 中核兰州铀浓缩有限公司 | System and method for changing double-loop operation of centrifugal machine cooling system into single-loop operation |
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2012
- 2012-11-30 CN CN 201220645683 patent/CN203051143U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953601A (en) * | 2016-06-30 | 2016-09-21 | 深圳市国电投资有限公司 | Power plant condenser vacuum maintaining unit provided with water chilling unit |
| CN108799130A (en) * | 2017-04-27 | 2018-11-13 | 上海漕泾热电有限责任公司 | It is a kind of that there is the water-ring vacuum pump for reducing sealing coolant-temperature gage |
| CN107062934A (en) * | 2017-05-15 | 2017-08-18 | 华电电力科学研究院 | A kind of energy-conservation vacuumizes cooling system and method |
| CN107062934B (en) * | 2017-05-15 | 2022-11-25 | 华电电力科学研究院有限公司 | Energy-saving vacuumizing cooling system and method |
| CN112414158A (en) * | 2019-08-22 | 2021-02-26 | 涟源钢铁集团有限公司 | Vacuum pump system, condenser vacuum system and control method thereof |
| CN112414158B (en) * | 2019-08-22 | 2022-05-20 | 涟源钢铁集团有限公司 | Vacuum pump system, condenser vacuum system and control method thereof |
| CN111852870A (en) * | 2020-05-06 | 2020-10-30 | 中国电力工程顾问集团中南电力设计院有限公司 | Coal-fired power plant vacuum pump multistage cooling water system and cooling method |
| CN111828322A (en) * | 2020-06-29 | 2020-10-27 | 武汉助力节能环保技术服务有限公司 | Vacuumizing device for steam turbine condenser |
| CN114308419A (en) * | 2020-09-30 | 2022-04-12 | 中核兰州铀浓缩有限公司 | System and method for changing double-loop operation of centrifugal machine cooling system into single-loop operation |
| CN114308419B (en) * | 2020-09-30 | 2024-01-05 | 中核兰州铀浓缩有限公司 | Double-loop single-loop operation system and method for centrifugal machine cooling system |
| CN113777507A (en) * | 2021-08-03 | 2021-12-10 | 中国民用航空飞行学院 | Thermal runaway vacuum cooling device under lithium ion battery variable-voltage environment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20131130 |