CN203026167U - Circulating cooling system for stored water in auxiliary water supply tank - Google Patents
Circulating cooling system for stored water in auxiliary water supply tank Download PDFInfo
- Publication number
- CN203026167U CN203026167U CN2012206855565U CN201220685556U CN203026167U CN 203026167 U CN203026167 U CN 203026167U CN 2012206855565 U CN2012206855565 U CN 2012206855565U CN 201220685556 U CN201220685556 U CN 201220685556U CN 203026167 U CN203026167 U CN 203026167U
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- China
- Prior art keywords
- water supply
- supply tank
- cooling system
- water
- auxiliary
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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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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model belongs to a pressurized water reactor nuclear power plant subsystem, and specifically relates to a circulating cooling system for stored water in an auxiliary water supply tank. The circulating cooling system comprises a circulating pump connected with the auxiliary water supply tank, wherein the other end of the circulating pump is connected with one end of a heat exchanger, and the other end of the heat exchanger is connected with the auxiliary water supply tank; and the heat exchanger is also connected with an external source. The circulating cooling system has the advantages of being capable of cooling the stored water in the auxiliary water supply tank after an alarm is given for the reason of high water temperature when the auxiliary water supply tank performs water supply operation or circulating deoxidization, preventing the water temperature from further rising to a high temperature limiting value and causing set recession, and improving the safety and the economical efficiency of the nuclear power plants.
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 the PWR nuclear power plant engineered safeguards features.When arbitrary bio-occlusion water system had an accident, the auxiliary feedwater system operation was derived 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 will carry out moisturizing by the direct moisturizing of conventional island condensate water extraction system or conventional island demineralized water after thermal de-aeration when water level is low.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 the moisturizing temperature exceeding standard from conventional island condensate water extraction system or conventional island DW system demineralized water system, perhaps the auxiliary feed-water tank water temperature is higher before carrying out the circulation deoxygenation, very likely make auxiliary feed-water tank cause water temperature to surpass the temperature limit of 50 ℃ when 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 hidden danger.If location, power plant factory site belongs to the summer high temperature zone, the risk of water tank overtemperature is larger.
Summary of the invention
The purpose of this invention is to provide a kind of auxiliary feed-water tank and store hydrologic cycle cooling system, it is undertaken sending auxiliary feed-water tank back to after cooling by extracting water in auxiliary feed-water tank, reaches purpose to the auxiliary feed-water tank cooling by circulation.
The present invention is achieved in that a kind of auxiliary feed-water tank stores hydrologic cycle cooling system, and it comprises and the ebullator of auxiliary feed-water tank by being connected, and the other end of ebullator is connected with an end of heat exchanger, and the other end of heat exchanger is connected with auxiliary feed-water tank.
Described heat exchanger also is connected with external source.
Advantage of the present invention is, native system can be carried out at auxiliary feed-water tank 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, prevent that water temperature from further rising to the high temperature limit value and causing the unit recession, improved security and the economy of nuclear power plant.
Description of drawings
Fig. 1 is that a kind of auxiliary feed-water tank provided by the present invention stores the 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:
A kind of auxiliary feed-water tank stores hydrologic cycle cooling system, and it utilizes auxiliary feedwater system circulation deoxygenation pump to send the auxiliary feed-water tank storage water that extracts back to auxiliary feed-water tank after cools down, reduces gradually storing the water water temperature after circulation.
A kind of auxiliary feed-water tank stores hydrologic cycle cooling system, and it comprises the ebullator 2 that is connected by pipeline with auxiliary feed-water tank 1, and the other end of ebullator 2 is connected with an end of heat exchanger 3, and the other end of heat exchanger 3 is connected with auxiliary feed-water tank 1.Heat exchanger 3 also is connected with external source 4.
The applied critical component of the present invention is as follows:
1) ebullator
In two circulation deoxygenation pumps of the auxiliary feedwater system that ebullator is used one is 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.
After high warning of auxiliary feed-water tank storage coolant-temperature gage occurring, open heat exchanger entrance and the valve that exports feedwater piping by operator's on-site manual, start ebullator system is dropped into.Be reduced to assigned temperature when following in water temperature, system stopped transport, and revert to stand-by state.Auxiliary feed-water tank stores hydrologic cycle cooling system as a kind of innovative approach of auxiliary feedwater system.When the high warning of water temperature occurring in auxiliary feed-water tank execution moisturizing operation or circulation oxygen removal process, this system can reduce water temperature, prevents that water temperature from further rising to the high temperature limit value and causing the unit recession.Security and the economy of nuclear power station have been improved.
Claims (2)
1. an auxiliary feed-water tank stores hydrologic cycle cooling system, it is characterized in that: it comprises the ebullator (2) that is connected with auxiliary feed-water tank (1), the other end of ebullator (2) is connected with an 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, and it is characterized in that: described heat exchanger (3) also is connected with external source (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206855565U CN203026167U (en) | 2012-12-13 | 2012-12-13 | Circulating cooling system for stored water in auxiliary water supply tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206855565U CN203026167U (en) | 2012-12-13 | 2012-12-13 | Circulating cooling system for stored water in auxiliary water supply tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203026167U true CN203026167U (en) | 2013-06-26 |
Family
ID=48650133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206855565U Expired - Lifetime CN203026167U (en) | 2012-12-13 | 2012-12-13 | Circulating cooling system for stored water in auxiliary water supply tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203026167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871508A (en) * | 2012-12-13 | 2014-06-18 | 中国核动力研究设计院 | Auxiliary water supply tank stored water circulation cooling system |
-
2012
- 2012-12-13 CN CN2012206855565U patent/CN203026167U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871508A (en) * | 2012-12-13 | 2014-06-18 | 中国核动力研究设计院 | Auxiliary water supply tank stored water circulation cooling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |