CN103871508A - Auxiliary water supply tank stored water circulation cooling system - Google Patents
Auxiliary water supply tank stored water circulation cooling system Download PDFInfo
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- CN103871508A CN103871508A CN201210536861.2A CN201210536861A CN103871508A CN 103871508 A CN103871508 A CN 103871508A CN 201210536861 A CN201210536861 A CN 201210536861A CN 103871508 A CN103871508 A CN 103871508A
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- water supply
- supply tank
- auxiliary
- water
- water tank
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The present invention belongs to a pressurized water reactor nuclear power plant subsystem, and specifically relates to an auxiliary water supply tank stored water circulation cooling system, which comprises a circulation pump connected with an auxiliary water supply tank, wherein the other end of the circulation pump is connected with one end of a heat exchanger, the other end of the heat exchanger is connected with the auxiliary water supply tank, and the heat exchanger is connected with an external source. The auxiliary water supply tank stored water circulation cooling system has the following advantages that: the stored water in the auxiliary water supply tank can be cooled after the high water temperature alarm is generated during the water supply operation of the auxiliary water supply tank or during the circulation oxygen removing process, such that the condition that the water temperature is further increased to achieve the high temperature limitation value so as to cause unit recession can be prevented so as to increase safety and economy of the nuclear power plant.
Description
Technical field
The invention belongs to a kind of PWR nuclear power plant subsystem, be specifically related to a kind of auxiliary feed-water tank and store hydrologic cycle cooling system.
Background technology
Auxiliary feedwater system belongs to PWR nuclear power plant engineered safeguards features.In the time that arbitrary bio-occlusion water system has an accident, auxiliary feedwater system operation, derives residual heat of nuclear core, until reactor coolant loop reaches the state that residual heat removal system can drop into.
Auxiliary feedwater system is provided with auxiliary feed-water tank, and according to existing design, the design temperature of the auxiliary feed-water tank of auxiliary feedwater system is 7 ~ 50 ℃.Auxiliary feed-water tank, in the time that water level is low, will carry out moisturizing by the direct moisturizing of conventional island condensate water extraction system or conventional island demineralized water after thermal de-aeration.Auxiliary feed-water tank need to regularly carry out water analysis, before sampling, need to carry out circulation deoxygenation operation to auxiliary feed-water tank.
If from the moisturizing temperature exceeding standard of conventional island condensate water extraction system or conventional island DW system demineralized water system, or auxiliary feed-water tank water temperature is higher before execution circulation deoxygenation, very likely make auxiliary feed-water tank cause water temperature to exceed the temperature limit of 50 ℃ in carrying out moisturizing operation or circulation deoxygenation work, cause unit to be carried out and drop back to the operation of shutdown, the safe operation of nuclear power station has been caused to hidden danger.If location, power plant factory site belongs to summer high temperature region, the risk of water tank overtemperature is larger.
Summary of the invention
The object of this invention is to provide a kind of auxiliary feed-water tank and store hydrologic cycle cooling system, it is undertaken after cooling sending auxiliary feed-water tank back to by extracting water in auxiliary feed-water tank, reaches the object that auxiliary feed-water tank is lowered the temperature by circulation.
The present invention is achieved in that a kind of auxiliary feed-water tank stores hydrologic cycle cooling system, and it comprises that with auxiliary feed-water tank, by the ebullator being connected, the other end of ebullator is connected with one end of heat exchanger, and the other end of heat exchanger is connected with auxiliary feed-water tank.
Described heat exchanger is also connected with external source.
Advantage of the present invention is, native system can be carried out and store water in to auxiliary feed-water tank after occurring in moisturizing operation or circulation oxygen removal process that water temperature is high and reporting to the police and lower the temperature at auxiliary feed-water tank, prevent that water temperature from further rising to high temperature limit value and causing unit recession, improved security and the economy of nuclear power plant.
Accompanying drawing explanation
Fig. 1 is that a kind of auxiliary feed-water tank provided by the present invention stores hydrologic cycle cooling system schematic diagram.
In figure, 1 auxiliary feed-water tank, 2 ebullators, 3 heat exchangers, 4 external sources.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
Auxiliary feed-water tank stores hydrologic cycle cooling system, and it utilizes auxiliary feedwater system circulation deoxygenation pump after cools down, to send the auxiliary feed-water tank storage water of extraction back to an auxiliary feed-water tank, after circulation, reduces gradually and stores water water temperature.
A kind of auxiliary feed-water tank stores hydrologic cycle cooling system, and it comprises the ebullator 2 being connected by pipeline with auxiliary feed-water tank 1, and the other end of ebullator 2 is connected with one end of heat exchanger 3, and the other end of heat exchanger 3 is connected with auxiliary feed-water tank 1.Heat exchanger 3 is also connected with external source 4.
The applied critical component of the present invention is as follows:
1) ebullator
In two circulation deoxygenation pumps of auxiliary feedwater system that ebullator is used one, for circulating cooling provides driving force.
2) heat exchanger
Heat exchanger is heat-exchangers of the plate type, and hot side is the water in auxiliary feed-water tank, and cold side is conventional island closed cycle water.
When occurring that auxiliary feed-water tank stores after the high warning of coolant-temperature gage, opened the valve of heat exchanger entrance and outlet feedwater piping by operator's on-site manual, start ebullator system is dropped into.Below water temperature is reduced to assigned temperature time, system is stopped transport, and revert to stand-by state.Auxiliary feed-water tank stores a kind of innovative approach of hydrologic cycle cooling system as auxiliary feedwater system.There is the high warning of water temperature in auxiliary feed-water tank execution moisturizing operation or circulation oxygen removal process time, this system can reduce water temperature, prevents that water temperature from further rising to high temperature limit value and causing unit recession.Security and the economy of nuclear power station are improved.
Claims (2)
1. an auxiliary feed-water tank stores hydrologic cycle cooling system, it is characterized in that: it comprises the ebullator (2) being connected with auxiliary feed-water tank (1), the other end of ebullator (2) is connected with one end of heat exchanger (3), and the other end of heat exchanger (3) is connected with auxiliary feed-water tank (1).
2. a kind of auxiliary feed-water tank as claimed in claim 1 stores hydrologic cycle cooling system, it is characterized in that: described heat exchanger (3) is also connected with external source (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536861.2A CN103871508A (en) | 2012-12-13 | 2012-12-13 | Auxiliary water supply tank stored water circulation cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536861.2A CN103871508A (en) | 2012-12-13 | 2012-12-13 | Auxiliary water supply tank stored water circulation cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103871508A true CN103871508A (en) | 2014-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210536861.2A Pending CN103871508A (en) | 2012-12-13 | 2012-12-13 | Auxiliary water supply tank stored water circulation cooling system |
Country Status (1)
| Country | Link |
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| CN (1) | CN103871508A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110246597A (en) * | 2019-06-12 | 2019-09-17 | 岭澳核电有限公司 | The cooling system and method for million kilowatt nuclear power station auxiliary feedwater system water storage tank |
| CN113140338A (en) * | 2021-03-26 | 2021-07-20 | 中广核工程有限公司 | Emergency waste heat discharging and water supplementing system for nuclear power plant |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08201559A (en) * | 1995-01-30 | 1996-08-09 | Toshiba Corp | Cooling equipment of reactor container |
| US5828714A (en) * | 1996-12-19 | 1998-10-27 | Westinghouse Electric Corporation | Enhanced passive safety system for a nuclear pressurized water reactor |
| CN101350232A (en) * | 2007-07-13 | 2009-01-21 | 通用电气-日立核能美国有限责任公司 | Feedwater temperature control methods and systems |
| CN101625905A (en) * | 2009-07-22 | 2010-01-13 | 中国广东核电集团有限公司 | Auxiliary water feed system of nuclear power plant |
| CN201387730Y (en) * | 2009-04-01 | 2010-01-20 | 中广核工程有限公司 | Auxiliary feed-water sub-system |
| CN203026167U (en) * | 2012-12-13 | 2013-06-26 | 中国核动力研究设计院 | Circulating cooling system for stored water in auxiliary water supply tank |
-
2012
- 2012-12-13 CN CN201210536861.2A patent/CN103871508A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08201559A (en) * | 1995-01-30 | 1996-08-09 | Toshiba Corp | Cooling equipment of reactor container |
| US5828714A (en) * | 1996-12-19 | 1998-10-27 | Westinghouse Electric Corporation | Enhanced passive safety system for a nuclear pressurized water reactor |
| CN101350232A (en) * | 2007-07-13 | 2009-01-21 | 通用电气-日立核能美国有限责任公司 | Feedwater temperature control methods and systems |
| CN201387730Y (en) * | 2009-04-01 | 2010-01-20 | 中广核工程有限公司 | Auxiliary feed-water sub-system |
| CN101625905A (en) * | 2009-07-22 | 2010-01-13 | 中国广东核电集团有限公司 | Auxiliary water feed system of nuclear power plant |
| CN203026167U (en) * | 2012-12-13 | 2013-06-26 | 中国核动力研究设计院 | Circulating cooling system for stored water in auxiliary water supply tank |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110246597A (en) * | 2019-06-12 | 2019-09-17 | 岭澳核电有限公司 | The cooling system and method for million kilowatt nuclear power station auxiliary feedwater system water storage tank |
| CN113140338A (en) * | 2021-03-26 | 2021-07-20 | 中广核工程有限公司 | Emergency waste heat discharging and water supplementing system for nuclear power plant |
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Application publication date: 20140618 |