CN104409115B - A kind of auxiliary for pool liquid heavy metal cooled reactor heats and Residual heat removal hybrid device - Google Patents
A kind of auxiliary for pool liquid heavy metal cooled reactor heats and Residual heat removal hybrid device Download PDFInfo
- Publication number
- CN104409115B CN104409115B CN201410789194.8A CN201410789194A CN104409115B CN 104409115 B CN104409115 B CN 104409115B CN 201410789194 A CN201410789194 A CN 201410789194A CN 104409115 B CN104409115 B CN 104409115B
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- stop valve
- secondary circuit
- circuit coolant
- heater
- coolant system
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
- G21C15/182—Emergency cooling arrangements; Removing shut-down heat comprising powered means, e.g. pumps
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of auxiliary for pool liquid heavy metal cooled reactor to heat and Residual heat removal hybrid device, including pond, serpentine pipe, stop valve 6, heater, water pump, water tank, the secondary circuit coolant outlet end of heat exchanger, secondary circuit coolant inlet end, the arrival end of secondary circuit coolant system and the port of export of secondary circuit coolant system of heat exchanger.Hybrid device of the present invention discharges the function of residual heat of nuclear core when achieving heating function and the reactor secondary circuit coolant system disabler of the liquid heavy metal coolant in primary tank when pool liquid heavy metal cooled reactor is out of service, system structure is simple, need not increase additional components in primary tank, be effectively improved reliability and the safety of reactor.
Description
Technical field
The present invention relates to a kind of reactor coolant auxiliary heating and residual heat removal facility technology, be used for particularly to one
Auxiliary heating and the Residual heat removal hybrid device of pool liquid heavy metal cooled reactor.
Background technology
When pool liquid heavy metal cooled reactor is out of service, liquid heavy metal coolant temperature reduces, due to liquid
Heavy metal fusing point is higher as easy as rolling off a log causes solidification accident when liquid heavy metal coolant temperature is less than its fusing point, though liquid weight
Coolant metal temperature is higher than its fusing point smaller range, it is also possible to the local solidification accident of liquid heavy metal coolant occur,
It is therefore necessary to the auxiliary heating system of liquid heavy metal coolant heating in being designed to realize primary tank.
At present, the auxiliary heating system in pool liquid heavy metal cooled reactor, mainly there is a following several types:
The first is to be passed through high temperature nitrogen in the toroidal cavity between reactor primary tank and safety container, passes through high temperature nitrogen
Gas realizes the heating function of liquid heavy metal coolant in primary tank with the heat exchange of primary tank, but this mode heat transfer efficiency
Relatively low, and the change of gas pressure in toroidal cavity can be caused to affect the security function of safety container.
The second is to load heater strip below reactor core to realize liquid heavy metal coolant in primary tank is added hot merit
Can, but under the influence of the Elevated temperature irradiation corrosive environment that reactor is long-term, the availability of heater strip will be under some influence.
After pool liquid heavy metal cooled reactor breakdown, main pump is out of service, and secondary circuit circulating pump is out of service,
Drastically being reduced by the coolant flow of reactor core, core power reduces, and main coolant loop temperature raises, and there is fuel can and melts
The risk changed, for ensureing to be taken away by residual heat of nuclear core in time, it is necessary to design residual heat removal system ensures the cooling capacity of reactor core.
At present, the residual heat removal system in pool liquid heavy metal cooled reactor, mainly there is a following several types:
The first is to install heat exchanger tube in primary tank outside wall surface, relies on spoke by the natural-circulation capacity of heat exchange inner air tube
Penetrate heat exchange to be taken away by the heat of primary tank wall, thus coolant temperature in reducing primary tank, take away residual heat of nuclear core, but this
The heat exchange efficiency of method is relatively low.
The second is installing afterheat heat exchanger in primary tank, leads back by reducing with the direct heat transfer of main coolant loop
Road coolant temperature, takes away reactor core heat, but this method needs additionally to install afterheat heat exchanger in primary tank, adds
The complexity that in primary tank, equipment is arranged.
Summary of the invention
It is an object of the invention to provide a kind of auxiliary for pool liquid heavy metal cooled reactor to heat and waste heat row
Go out hybrid device.
The technology of the present invention solution is as follows: a kind of auxiliary for pool liquid heavy metal cooled reactor heats with remaining
Hot type goes out hybrid device, including: pond, serpentine pipe, stop valve one, stop valve two, stop valve three, stop valve four, stop valve
Five, stop valve six, heater, water pump, water tank, the secondary circuit coolant outlet end of heat exchanger, the secondary circuit of heat exchanger
Coolant inlet end, the arrival end of secondary circuit coolant system and the port of export of secondary circuit coolant system；Hybrid device with
Secondary circuit coolant system is a loop in parallel, and the arrival end of secondary circuit coolant system passes through stop valve five and heat exchanger
Secondary circuit coolant outlet end be connected, by stop valve six and heat exchanger two times of the port of export of secondary circuit coolant system
Road coolant inlet end is connected, and it is cold with the secondary circuit of heat exchanger that one end of heater passes sequentially through stop valve two and stop valve four
But the agent port of export is connected, and the other end of heater is connected with one end of water tank by water pump, and the other end of water tank is by cutting
Only valve three is connected with the secondary circuit coolant inlet end of heat exchanger, and one end of serpentine pipe passes sequentially through stop valve one and stop valve
Four are connected with the secondary circuit coolant outlet end of heat exchanger, and the other end of serpentine pipe is connected with water tank, and serpentine pipe is immersed in
In pond, stop valve two, heater and water pump are a loop in parallel with stop valve one and serpentine pipe.
Further, during reactor operation, with the arrival end of secondary circuit coolant system and secondary circuit coolant system
Stop valve five, stop valve six that the port of export is connected are opened, and the stop valve three, the stop valve four that are connected with water tank and heater close
Closing, the stop valve two being connected with heater is closed, and the stop valve one being connected with serpentine pipe is closed, by secondary circuit coolant system
Take away the heat that reactor core produces in primary tank；When reactor is out of service, with the arrival end of secondary circuit coolant system and two times
Stop valve five, stop valve six that the port of export of road coolant system is connected are closed, the stop valve being connected with water tank and heater
Three, stop valve four is opened, and the stop valve two being connected with heater is opened, and the stop valve one being connected with serpentine pipe is closed, by auxiliary
Help heater that liquid heavy metal coolant in primary tank is heated, prevent liquid heavy metal coolant from solidifying；Instead
When answering heap secondary circuit coolant system disabler, with the arrival end of secondary circuit coolant system and secondary circuit coolant system
Stop valve five, stop valve six that the port of export is connected are closed, the stop valve three that is connected with water tank and heater, stop valve four dozens
Opening, the stop valve two being connected with heater is closed, and the stop valve one being connected with serpentine pipe is opened, will be main by residual heat removal facility
The Residual heat removal that in container, reactor core produces.
Compared with prior art, the invention have the characteristics that
The present invention assists heating and Residual heat removal hybrid device simple in construction, it is not necessary to increase extra portion in primary tank
Part, is effectively improved reliability and the safety of reactor.
The operation of auxiliary heating and Residual heat removal hybrid device does not interferes with the safety of other system, and heat exchange efficiency is relatively
High.
Auxiliary heating and Residual heat removal hybrid device have function and the row of heating liquid in container heavy metal coolant
Go out the function of residual heat of nuclear core.
Accompanying drawing explanation
A kind of auxiliary for pool liquid heavy metal cooled reactor that Fig. 1 provides for the present invention heats and Residual heat removal
Hybrid device schematic diagram, wherein, 1 is pond, and 2 is serpentine pipe, and 3 is stop valve one, and 4 is stop valve two, and 5 is heater, and 6 are
Water pump, 7 is water tank, and 8 is stop valve three, and 9 is stop valve four, and 10 is stop valve five, and 11 is stop valve six, 12 heat exchangers
Secondary circuit coolant outlet end, the secondary circuit coolant inlet end of 13 heat exchangers, the arrival end of 14 secondary circuit coolant systems,
The port of export of 15 secondary circuit coolant systems.
Detailed description of the invention
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings:
As it is shown in figure 1, a kind of auxiliary for pool liquid heavy metal cooled reactor of the present invention heats and Residual heat removal
Hybrid device, including pond 1, serpentine pipe 2, stop valve 3, stop valve 4, stop valve 8, stop valve 9, stop valve 10, stop valve
11, the secondary circuit cooling of heater 5, water pump 6, water tank 7, the secondary circuit coolant outlet end 12 of heat exchanger, heat exchanger
Agent entrance point 13, the arrival end 14 of secondary circuit coolant system and the port of export 15 of secondary circuit coolant system；Hybrid device
Being a loop in parallel with secondary circuit coolant system, the arrival end 14 of secondary circuit coolant system is handed over heat by stop valve 10
The secondary circuit coolant outlet end 12 of parallel operation is connected, and the port of export 15 of secondary circuit coolant system is by stop valve 11 and heat exchange
The secondary circuit coolant inlet end 13 of device is connected, and stop valve 4, stop valve 9 and two times of heat exchanger are passed through in one end of heater 5
Road coolant outlet end 12 is connected, and the other end of heater 5 is connected with one end of water tank 7 by water pump 6, water tank 7 another
One end is connected with the secondary circuit coolant inlet end 13 of heat exchanger by stop valve 8, one end of serpentine pipe 2 pass through stop valve 3,
Stop valve 9 is connected with the secondary circuit coolant outlet end 12 of heat exchanger, and the other end of serpentine pipe 2 is connected with water tank 7, spiral
Pipe 2 is immersed in pond 1, and stop valve 4, heater 5, water pump 6 are a loop in parallel with stop valve 3, serpentine pipe 2.
During reactor operation, with arrival end 14 and the port of export 15 of secondary circuit coolant system of secondary circuit coolant system
The stop valve 10, the stop valve 11 that are connected are opened, and the stop valve 8, the stop valve 9 that are connected with water tank 7 and heater 5 are closed, and add
The stop valve 4 that hot device 5 is connected is closed, and the stop valve 3 being connected with serpentine pipe 2 is closed, and the secondary circuit coolant of low temperature is from secondary circuit
The port of export 15 of coolant system is by entering the secondary circuit coolant inlet end 13 of heat exchanger after stop valve 11, in heat exchange
After absorbing the heat of primary Ioops coolant in device, temperature raises, and flows out, so from the secondary circuit coolant outlet end 12 of heat exchanger
After after stop valve 10 enter secondary circuit coolant system arrival end 14, in secondary circuit coolant system, secondary circuit is cold
But the heat that agent absorbs is taken away, and completes a circulation；
When reactor is out of service, with arrival end 14 and the outlet of secondary circuit coolant system of secondary circuit coolant system
Stop valve 10, stop valve 11 that end 15 is connected are closed, and the stop valve 8, the stop valve 9 that are connected with water tank 7 and heater 5 are opened,
The stop valve 4 being connected with heater 5 is opened, and the stop valve 3 being connected with serpentine pipe 2 is closed, and heater 5 brings into operation, by water storage
Water in tank 7 and loop is heated to uniform temperature, and then water pump 6 brings into operation, and by stop valve 8, the water of high temperature is sent into heat friendship
The secondary circuit coolant inlet end 13 of parallel operation, after transferring heat to primary Ioops coolant in a heat exchanger, temperature reduces, from
The secondary circuit coolant outlet end 12 of heat exchanger flows out, and is then passed through stop valve 9, stop valve 4 flows in heater 5 and continues to add
Heat, is completed a circulation, is heated liquid heavy metal coolant in primary tank by auxiliary heating system, reach to prevent liquid
There is the purpose of solidification in state heavy metal coolant.
During reactor secondary circuit coolant system disabler, with arrival end 14 and the secondary circuit of secondary circuit coolant system
Stop valve 10, stop valve 11 that the port of export 15 of coolant system is connected are closed, the cut-off being connected with water tank 7 and heater 5
Valve 8, stop valve 9 are opened, and the stop valve 4 being connected with heater 5 is closed, and the stop valve 3 being connected with serpentine pipe 2 is opened, in main appearance
High-temperature water after absorbing reactor core heat in device flows out from the secondary circuit coolant outlet end 12 of heat exchanger, by stop valve 9, cuts
Only flowing into serpentine pipe 2 after valve 3, the high-temperature water in serpentine pipe 2 is flowed with stop valve 8 by water tank 7 after discharging heat in pond 1
Enter the secondary circuit coolant inlet end 13 of heat exchanger, continue to absorb in primary tank the heat that reactor core produces, complete one and follow
Ring, reaches the purpose of the Residual heat removal produced by reactor core in primary tank by residual heat removal facility.
Compared with prior art, the present invention assists heating and Residual heat removal hybrid device simple in construction, it is not necessary to leading
Increase additional components in container, be effectively improved reliability and the safety of reactor.Auxiliary heating and the compound dress of Residual heat removal
The operation put does not interferes with the safety of other system, and heat exchange efficiency is higher.
Claims (2)
1., for auxiliary heating and the Residual heat removal hybrid device of pool liquid heavy metal cooled reactor, its feature exists
In including: pond (1), serpentine pipe (2), stop valve one (3), stop valve two (4), stop valve three (8), stop valve four (9), cut-off
Valve five (10), stop valve six (11), heater (5), water pump (6), water tank (7), the secondary circuit coolant outlet of heat exchanger
End (12), secondary circuit coolant inlet end (13) of heat exchanger, the arrival end (14) of secondary circuit coolant system and secondary circuit
The port of export (15) of coolant system；Hybrid device is a loop in parallel with secondary circuit coolant system, and secondary circuit cools down
The arrival end (14) of agent system is connected with secondary circuit coolant outlet end (12) of heat exchanger by stop valve five (10), two times
The port of export (15) of road coolant system is by secondary circuit coolant inlet end (13) phase of stop valve six (11) with heat exchanger
Even, one end of heater (5) passes sequentially through the secondary circuit coolant of stop valve two (4) and stop valve four (9) and heat exchanger and goes out
Mouthful end (12) is connected, and the other end of heater (5) is connected with one end of water tank (7) by water pump (6), water tank (7) another
One end is connected with secondary circuit coolant inlet end (13) of heat exchanger by stop valve three (8), and one end of serpentine pipe (2) is successively
It is connected with secondary circuit coolant outlet end (12) of heat exchanger with stop valve four (9) by stop valve one (3), serpentine pipe (2)
The other end be connected with water tank (7), serpentine pipe (2) is immersed in pond (1), stop valve two (4), heater (5) and water pump
(6) it is a loop in parallel with stop valve one (3) and serpentine pipe (2).
Auxiliary heating the most according to claim 1 and Residual heat removal hybrid device, it is characterised in that: reactor operation
Time, the stop valve five being connected with the arrival end (14) of secondary circuit coolant system and the port of export (15) of secondary circuit coolant system
(10), stop valve six (11) open, the stop valve three (8) that is connected with water tank (7) and heater (5), stop valve four (9) close
Closing, the stop valve two (4) being connected with heater (5) is closed, and the stop valve one (3) being connected with serpentine pipe (2) is closed, by two times
Road coolant system takes away the heat that reactor core produces in primary tank；When reactor is out of service, with secondary circuit coolant system
Stop valve five (10), stop valve six (11) that arrival end (14) is connected with the port of export (15) of secondary circuit coolant system are closed,
The stop valve three (8), the stop valve four (9) that are connected with water tank (7) and heater (5) are opened, the cut-off being connected with heater (5)
Valve two (4) is opened, and the stop valve one (3) being connected with serpentine pipe (2) is closed, by assisted heating device to liquid weight in primary tank
Coolant metal heats, and prevents liquid heavy metal coolant from solidifying；Reactor secondary circuit coolant system function is lost
During effect, the stop valve being connected with the arrival end (14) of secondary circuit coolant system and the port of export (15) of secondary circuit coolant system
Five (10), stop valve six (11) is closed, and the stop valve three (8), the stop valve four (9) that are connected with water tank (7) and heater (5) are beaten
Opening, the stop valve two (4) being connected with heater (5) is closed, and the stop valve one (3) being connected with serpentine pipe (2) is opened, and passes through waste heat
The Residual heat removal that reactor core in primary tank is produced by discharger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410789194.8A CN104409115B (en) | 2014-12-17 | 2014-12-17 | A kind of auxiliary for pool liquid heavy metal cooled reactor heats and Residual heat removal hybrid device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410789194.8A CN104409115B (en) | 2014-12-17 | 2014-12-17 | A kind of auxiliary for pool liquid heavy metal cooled reactor heats and Residual heat removal hybrid device |
Publications (2)
| Publication Number | Publication Date |
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| CN104409115A CN104409115A (en) | 2015-03-11 |
| CN104409115B true CN104409115B (en) | 2016-11-30 |
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| CN201410789194.8A Active CN104409115B (en) | 2014-12-17 | 2014-12-17 | A kind of auxiliary for pool liquid heavy metal cooled reactor heats and Residual heat removal hybrid device |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5499277A (en) * | 1994-08-19 | 1996-03-12 | General Electric Company | Method and apparatus for enhancing reactor air-cooling system performance |
| JPH0862373A (en) * | 1994-08-24 | 1996-03-08 | Hitachi Ltd | Heat eliminating device of reactor container |
| US5828714A (en) * | 1996-12-19 | 1998-10-27 | Westinghouse Electric Corporation | Enhanced passive safety system for a nuclear pressurized water reactor |
| CN102623072A (en) * | 2012-03-30 | 2012-08-01 | 中国科学院合肥物质科学研究院 | Compound accident residual heat removal system for accelerator-driven sub-critical reactor |
| CN103021483B (en) * | 2012-12-31 | 2015-08-19 | 中国科学院合肥物质科学研究院 | A kind of auxiliary heating system for liquid metal cooling natural circulation reactor |
| CN103065693B (en) * | 2013-01-13 | 2015-04-22 | 中国科学院合肥物质科学研究院 | Liquid metal cooling tank type separation system for in-pile cold tank and in-pile hot tank of reactor |
| CN103928064B (en) * | 2013-01-14 | 2017-05-17 | 上海核工程研究设计院 | Thermally-operated conversion system |
| CN103337264A (en) * | 2013-07-17 | 2013-10-02 | 中国科学院上海应用物理研究所 | Residual heat removal system for molten salt reactor buffer salt accident |
| CN103903657B (en) * | 2013-12-17 | 2016-04-20 | 中广核核电运营有限公司 | The non-active ultimate heat sink cooling system of nuclear power plant and method |
| CN103730171B (en) * | 2014-01-12 | 2016-03-02 | 中国科学技术大学 | A kind of liquid heavy metal cooling natural circulation bath-type reactor auxiliary heating system |
| CN104200852B (en) * | 2014-09-16 | 2017-01-25 | 中国科学院合肥物质科学研究院 | Condensed liquid heavy metal choke valve |
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