CN103377722B - Out-pile fused mass arresting device after a kind of nuclear power plant accident - Google Patents
Out-pile fused mass arresting device after a kind of nuclear power plant accident Download PDFInfo
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- CN103377722B CN103377722B CN201210127011.7A CN201210127011A CN103377722B CN 103377722 B CN103377722 B CN 103377722B CN 201210127011 A CN201210127011 A CN 201210127011A CN 103377722 B CN103377722 B CN 103377722B
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- reactor core
- fused mass
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- melt retention
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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 relates to V-type out-pile fused mass arresting device after a kind of nuclear power plant accident, including interior wall, the steam channel wall being fixed on the inside of interior wall, the pressure vessel being placed within steam channel wall, the also reactor core fused mass cooling device for being fixed on exterior wall including enclosing exterior wall outside interior wall, be fixed on the reactor core melt retention device of interior wall bottom and be in close contact with reactor core melt retention device bottom；Cooling agent decline passway is formed between interior wall and exterior wall, coolant channel is provided between interior wall and reactor core melt retention device；Reactor core melt retention device upper surface is provided with reactor core melt retention groove positioned at pressure vessel location directly below, and reactor core melt retention device lower surface is plane；Reactor core melt retention device is made up of inorganic non-metallic refractory material.The present invention is detained design using the fused mass of out-pile, and fused mass is contained with different materials, and fused mass is cooled down with coolant loop and reactor core fused mass cooling device, improves the full property of height of nuclear power station.
Description
Technical field
It is more particularly to a kind of complete using reactor core fused mass the present invention relates to out-pile fused mass arresting device after a kind of nuclear power plant accident
Complete passive Cooling Design, improves out-pile fused mass arresting device after the nuclear power plant accident of nuclear plant safety.
Background technology
It is an important mitigation strategy of the nuclear power for major accident that fused mass is detained technology, can effectively solve radioactivity release,
Maintain the complete of secure border.Current generation Ⅲ nuclear power all employs the severe accident relieving measure after pressure vessel breakage.
AP-1000 mainly includes that setting melting reactor core is detained facility using the measure of the passive gentle solution major accident of prevention
(IVR), occur reactor core melt accident when, heap chamber flood system is injected water into while in heap, be also injected into pressure vessel outer wall with
Space between reactor pit heat insulation layer, to cool down the reactor core fused mass fallen from reactor core in lower head of pressure vessel, it is ensured that low head is not
It is fused, reactor core fused mass is maintained in reactor pressure vessel, it is to avoid reactor core fused mass occurs with containment concrete floor
Exothermic reaction, so prevents containment base plate to be directly heated the generation of damaged and vapour explosion.Once it is worth noting that, heap
Core fused mass burn through pressure vessel, then IVR will be helpless.Therefore out-pile melts after needing a kind of new nuclear power plant accident of offer badly
Melt thing arresting device.
The content of the invention
The technical problem to be solved in the present invention is to provide out-pile fused mass arresting device after a kind of nuclear power plant accident, including surrounding closure
Interior wall, steam channel wall, the pressure vessel that is placed within steam channel wall of bottom opening that are fixed on the inside of interior wall, pressure
Steam rising passway is formed between container and steam channel wall, also including enclosing the closure of the surrounding on base plate outside interior wall
Exterior wall, be fixed on interior wall bottom reactor core melt retention device and with reactor core melt retention device bottom be in close contact
The reactor core fused mass cooling device for being fixed on exterior wall；Cooling agent decline passway is formed between interior wall and exterior wall, interior wall melts with reactor core
Melt and be provided with coolant channel between thing arresting device；Reactor core melt retention device upper surface is located at pressure vessel location directly below
Reactor core melt retention groove is provided with, reactor core melt retention device lower surface is plane；Reactor core melt retention device is by nothing
Machine non-metallic refractory is constituted.
Inorganic non-metallic refractory material is acid refractory, neutral refractory, basic refractory or high-temperature composite material.
Acid refractory is silica.
Neutral refractory is aluminum oxide, chromium oxide or graphite.
Basic refractory is magnesia, calcium oxide, lanthana, beryllium oxide or zirconium oxide.
High-temperature composite material is cermet or fiber reinforced ceramic.
If reactor core fused mass cooling device includes the dried layer heat pipe for contacting successively, every layer of heat pipe includes some crisscross heat pipes；
The sealing of every end of heat pipe is inserted among exterior wall.
If reactor core fused mass cooling device includes the dried layer thermoelectric conversion device for contacting successively, every layer of thermoelectric conversion device is including some
The crisscross thermoelectric conversion device of bar；The sealing of every end of thermoelectric conversion device is inserted among exterior wall.
The number of plies of heat pipe or thermoelectric conversion device is 1~5 layer.
A diameter of 4m~8m of reactor core melt retention groove, depth be 1.8m~4m, reactor core melt retention groove bottom away from
Thickness from reactor core melt retention device bottom is 0.5m~2m.
When there is major accident, after core meltdown, because fused mass retentivity mechanism is complicated in heap, it is difficult to recognize completely, therefore deposit
In the possibility that pressure vessel is damaged.After pressure vessel is damaged, fused mass outflow, it will the concrete with former cavity bottom is sent out
Raw reaction, produces a large amount of on-condensible gases, it is possible to make containment superpressure, simultaneously because fused mass inside constantly produces decay heat,
If cannot be sufficiently cool, fused mass constantly downward burn through can be directly heated finally to containment, last one protective screen of burn through
Barrier, causes radioactivity largely to leak.
The present invention is detained design using the fused mass of out-pile, contains fused mass with the material different from pressure vessel, then use cooling agent
Loop and reactor core fused mass cooling device are cooled down to fused mass, it is ensured that derive the decay heat of fused mass in time, prevent fused mass
Directly heated with coagulation soil interaction and containment, maintain safety curtain complete, prevent radioactivity from largely leaking, greatly
Improve the full property of height of nuclear power station.
Brief description of the drawings
Fig. 1 is the structural representation of out-pile fused mass arresting device after a kind of nuclear power plant accident provided by the present invention.
Fig. 2 is the reactor core fused mass cooling device of out-pile fused mass arresting device after a kind of nuclear power plant accident provided by the present invention
Top view.
In figure：1 is pressure vessel, and 2 is cooling agent decline passway, and 3 is exterior wall, and 4 is coolant channel, and 5 melt for reactor core
Thing arresting device, 6 is reactor core fused mass cooling device, and 7 is reactor core fused mass, and 8 is steam rising passway, and 9 is interior wall, 10
It is steam channel wall.
Specific embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and examples.
The present invention includes pressure vessel 1, exterior wall 3, interior wall 9, reactor core melt retention device 5, reactor core fused mass cooling device
6。
The surrounding of interior wall 9 closure is opened wide up and down, the steam channel wall of the bottom opening that the inner side of interior wall 9 is fixed with by concreting
10.Pressure vessel 1 is placed in steam channel wall 10 by pipeline support.Formed between pressure vessel 1 and steam channel wall 10
Steam rising passway 8.
Reactor core melt retention device 5 is fixed on the bottom of interior wall 9 by concreting.Interior wall 9 and reactor core melt retention device
Coolant channel 4 is provided between 5.Reactor core melt retention device 5 is not less than 1580 degrees Celsius inorganic by bearing ceiling temperature
Non-metallic refractory is constituted, and has preferable heat shock resistance and the ability of chemical erosion, thermal conductivity factor are low and the coefficient of expansion is low.Nothing
Having a plurality of micro-channel inside machine non-metallic refractory can export to steam rising passway 8 by coolant vapours.Inorganic non-gold
Category refractory material can be acid refractory, neutral refractory, basic refractory or high-temperature composite material.Wherein acid
Property refractory material is preferably silica.Neutral refractory is preferably aluminum oxide, chromium oxide or graphite.Basic refractory is preferred
It is magnesia, calcium oxide, lanthana, beryllium oxide or zirconium oxide.High-temperature composite material is preferably cermet or fiber reinforcement pottery
Porcelain.
The upper surface of reactor core melt retention device 5 is provided with reactor core melt retention groove positioned at pressure vessel location directly below,
A diameter of 4m~8m of reactor core melt retention groove catches area to provide enough reactor core, depth requirements be greater than 1.8m~
4m, to bear reactor core fused mass.The lower surface of reactor core melt retention device 5 is plane.Reactor core melt retention groove bottom away from
Thickness from the bottom of reactor core melt retention device 5 is 0.5m~2m.
The overall surrounding closure of exterior wall 3, is fixed on base plate, by being welded with the inner bottom plating of exterior wall by concrete
Reactor core fused mass cooling device 6.Reactor core fused mass cooling device 6 includes 1~5 layer of heat pipe for contacting successively, every layer of hot and cold tube bag
Include some fixed heat pipes of crisscross welding connection.Among every two ends insertion exterior wall 3 of heat pipe, and sealed with exterior wall 3
It is fixed.Heat pipe is preferably high-temperature heat pipe, and to receive or water is used as working media, inwall is provided with capillary structure.Reactor core fused mass is cold
But device 6 can also be made up of some alkali metal electricity-heat converters, and concrete structure is consistent with heat pipe.
Interior wall 9 and reactor core melt retention device 5 are integrally placed within exterior wall 3, by some fixing points realize interior wall 9 with it is outer
Fixation between wall 3.Cooling agent decline passway 2 is formed between interior wall 9 and exterior wall 3, reactor core fused mass cooling device 6 is located at
Reactor core melt retention device lower section, the top of reactor core fused mass cooling device 6 and the bottom phase of reactor core melt retention device 5
Away from 0.1~0.5m.
For nuclear power station, in the case of major accident, pressure vessel 1 ruptures, core meltdown reactor core fused mass 7, when reactor core is molten
Melt thing 7 to flow out, out-pile fused mass arresting device 6, be detained reactor core fused mass 7, but reactor core fused mass can be produced continuously
Decay heat, if not in time by heat derives, reactor core fused mass 7 produce and the heat that gathers can burn through base plate, cooling agent is from cold
But agent decline passway 2 declines, and enters from coolant channel 4, and the top of cooling reactor core fused mass 7, cooling agent still further below, leads to
The entrance of reactor core fused mass cooling device 6 is crossed, is flowed out from the gap of reactor core fused mass cooling device 6, cool down out-pile fused mass
Arresting device 5, after cooling agent evaporation, through out-pile fused mass arresting device 5, containment is entered along steam rising passway 8,
After being cooled in containment, become coolant water, then entered by cooling agent decline passway 2, so that circulation is formed, herein together
When reactor core fused mass cooling device 6 heat can also be led to exterior wall 3 by the mechanism of heat pipe or thermoelectric conversion device, play
The effect of cooling out-pile fused mass arresting device 5.
Claims (9)
1. a kind of interior wall of out-pile fused mass arresting device after nuclear power plant accident, including surrounding closure, the bottom being fixed on the inside of interior wall
The steam channel wall of portion opening, the pressure vessel being placed within steam channel wall, shape between the pressure vessel and steam channel wall
Into steam rising passway, it is characterised in that：Also include enclosing the exterior wall of the closure of the surrounding on base plate outside interior wall, consolidate
Due to the reactor core melt retention device of interior wall bottom and the fixation being in close contact with the reactor core melt retention device bottom
In the reactor core fused mass cooling device of exterior wall；Cooling agent decline passway, the interior wall and reactor core are formed between the interior wall and exterior wall
Coolant channel is provided between fused mass arresting device；The reactor core melt retention device upper surface is located at immediately below pressure vessel
Position be provided with reactor core melt retention groove, the reactor core melt retention device lower surface is plane；The reactor core melting
Thing arresting device is made up of inorganic non-metallic refractory material；
If the reactor core fused mass cooling device includes the dried layer heat pipe that contacts successively, every layer of heat pipe include some it is crisscross
Heat pipe；The sealing of every end of heat pipe is inserted among exterior wall.
2. out-pile fused mass arresting device after a kind of nuclear power plant accident according to claim 1, it is characterised in that：The nothing
Machine non-metallic refractory is acid refractory, neutral refractory, basic refractory or high-temperature composite material.
3. out-pile fused mass arresting device after a kind of nuclear power plant accident according to claim 2, it is characterised in that：The acid
Property refractory material be silica.
4. out-pile fused mass arresting device after a kind of nuclear power plant accident according to claim 2, it is characterised in that：In described
Property refractory material be aluminum oxide, chromium oxide or graphite.
5. out-pile fused mass arresting device after a kind of nuclear power plant accident according to claim 2, it is characterised in that：The alkali
Property refractory material be magnesia, calcium oxide, lanthana, beryllium oxide or zirconium oxide.
6. out-pile fused mass arresting device after a kind of nuclear power plant accident according to claim 2, it is characterised in that：The height
Warm composite is cermet or fiber reinforced ceramic.
7. out-pile fused mass arresting device after a kind of nuclear power plant accident according to claim 1, it is characterised in that：The heap
If core fused mass cooling device includes the dried layer thermoelectric conversion device for contacting successively, every layer of thermoelectric conversion device includes some
Crisscross thermoelectric conversion device；The sealing of the end of every thermoelectric conversion device is inserted among exterior wall.
8. out-pile fused mass arresting device after a kind of nuclear power plant accident according to claim 7, it is characterised in that：The heat
The number of plies of pipe or thermoelectric conversion device is 1~5 layer.
9. out-pile fused mass arresting device after a kind of nuclear power plant accident according to claim 1, it is characterised in that：The heap
Core fused mass is detained a diameter of 4m~8m of groove, and depth is 1.8m~4m, the reactor core melt retention groove distance from bottom
The thickness of the reactor core melt retention device bottom is 0.5m~2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127011.7A CN103377722B (en) | 2012-04-27 | 2012-04-27 | Out-pile fused mass arresting device after a kind of nuclear power plant accident |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127011.7A CN103377722B (en) | 2012-04-27 | 2012-04-27 | Out-pile fused mass arresting device after a kind of nuclear power plant accident |
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| CN103377722A CN103377722A (en) | 2013-10-30 |
| CN103377722B true CN103377722B (en) | 2017-05-31 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017045159A1 (en) * | 2015-09-16 | 2017-03-23 | 中广核工程有限公司 | Nuclear power plant reactor pressure vessel and shielding wall combination structure |
| CN105513649B (en) * | 2016-01-14 | 2019-10-29 | 中国核电工程有限公司 | A kind of grouping of reactor core fusant is detained and cooling system |
| CN107978378B (en) * | 2017-10-19 | 2021-06-25 | 中国核电工程有限公司 | Reactor core melt trapping device |
| CN109346196B (en) * | 2018-11-13 | 2022-04-15 | 中国核动力研究设计院 | Active and passive cooling combined molten material in-pile retention system |
| CN111883269B (en) * | 2020-08-12 | 2022-04-22 | 中国核动力研究设计院 | System and method for cooling stagnant passive in molten material reactor of floating nuclear power station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN85100182A (en) * | 1985-04-01 | 1986-08-20 | 清华大学 | Adopt the nuclear power station light water reactor of double pressure shell |
| JP4612558B2 (en) * | 2006-02-22 | 2011-01-12 | 株式会社東芝 | Core catcher and reactor containment |
| JP4987681B2 (en) * | 2007-12-12 | 2012-07-25 | 株式会社東芝 | Primary containment vessel and leak detection floor |
| CN202102730U (en) * | 2011-05-09 | 2012-01-04 | 中科华核电技术研究院有限公司 | Out-of-pile cooling and curing device of reactor core fusant in reactor severe accident and system |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: Shanghai Nuclear Engineering Research & Design Institute |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |