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 PDF

Info

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
Authority
CN
China
Prior art keywords
water supply
supply tank
cooling system
water
auxiliary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2012206855565U
Other languages
Chinese (zh)
Inventor
黄伟
任云
曾畅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nuclear Power Institute of China
Original Assignee
Nuclear Power Institute of China
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nuclear Power Institute of China filed Critical Nuclear Power Institute of China
Priority to CN2012206855565U priority Critical patent/CN203026167U/en
Application granted granted Critical
Publication of CN203026167U publication Critical patent/CN203026167U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Landscapes

  • 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

A kind of auxiliary feed-water tank stores hydrologic cycle cooling system
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).
CN2012206855565U 2012-12-13 2012-12-13 Circulating cooling system for stored water in auxiliary water supply tank Expired - Lifetime CN203026167U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN105810256B (en) A kind of nuclear power station passive residual heat removal system
CN105810257B (en) A kind of passive nuclear power station pressure release condensation heat exchange system
GB2540708A (en) Passive safe cooling system
CN101720488B (en) Nuclear power plant using nanoparticles in closed circuits of emergency systems and related method
CN103413581B (en) passive containment cooling system
CN202948738U (en) Kinetic and non-kinetic combined waste heat discharging system
CN204242601U (en) Non-passive safety cooling system
CN103778976A (en) Passive waste heat discharging system on secondary side of steam generator
CN102867548A (en) Active and passive combined secondary side reactor core heat derivation device
CN204480678U (en) A kind of nuclear power station Heat Discharging System of Chinese
GB2523949A (en) High-pressure safe injection system for nuclear power stations
CN102903402A (en) Advanced secondary side core heat lead-out device
WO2014048291A1 (en) Combined active and passive emergency shutdown system and method
CN201698776U (en) Continuous-operation safety injection and spray system for nuclear power station
CN204029398U (en) Non-active Spent Fuel Pool cooling system
CN202887749U (en) Active and passive combined secondary side reactor core heat leading-out device
CN203026167U (en) Circulating cooling system for stored water in auxiliary water supply tank
CN203366752U (en) Passive pressurized water reactor depressurizing system
CN103778974A (en) Kinetic and non-kinetic combined waste heat discharging system
CN202855317U (en) Passive started cooling system
CN104134474A (en) Passive cooling system
CN103871508A (en) Auxiliary water supply tank stored water circulation cooling system
CN202948737U (en) Passive residual heat removal system directly connected with main loop
Chun et al. Safety evaluation of small-break LOCA with various locations and sizes for SMART adopting fully passive safety system using MARS code
CN202887750U (en) Advanced secondary side reactor core heat leading-out device

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