CN102750993B - There is the passive containment accidental depressurization system of gas entrapments function of releasing - Google Patents
There is the passive containment accidental depressurization system of gas entrapments function of releasing Download PDFInfo
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- CN102750993B CN102750993B CN201210221954.6A CN201210221954A CN102750993B CN 102750993 B CN102750993 B CN 102750993B CN 201210221954 A CN201210221954 A CN 201210221954A CN 102750993 B CN102750993 B CN 102750993B
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- containment
- pressure release
- accidental depressurization
- air bag
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- 238000002955 isolation Methods 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000003032 molecular docking Methods 0.000 claims abstract description 11
- 230000035515 penetration Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000001629 suppression Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 11
- 239000001257 hydrogen Substances 0.000 description 11
- 229910052739 hydrogen Inorganic materials 0.000 description 11
- 238000004880 explosion Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000002285 radioactive effect Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The present invention relates to a kind of passive containment accidental depressurization system with gas entrapments function of releasing, comprise containment (19), containment (19) is arranged containment penetration (17), containment (19) arranges the accidental depressurization passage (1) running through containment (19) by containment penetration (17), the porch of accidental depressurization passage (1) arranges high efficiency particulate air filter (2) and isolation valve, the end of accidental depressurization passage (1) by pipeline docking mechanism (6) be arranged on containment (19) pressure release air bag (7) outward and be connected, therefore, partial high pressure mixed gas can be imported pressure release air bag (7) by accidental depressurization passage (1) by the present invention, to realize the suppression raised pressure in containment, and by adopting general passive control module (18), the startup of accidental depressurization system and whole service process is made not to rely on external impetus supply completely, therefore there is non-energy dynamic characteristic.
Description
Technical field
The invention belongs to containment pressure relief system, be specially a kind of passive containment accidental depressurization system with pressure release gas entrapments function.
Background technology
Airtight containment is nuclear power plant when having an accident, the important barrier preventing radiomaterial from leaking.Under normal circumstances, after having an accident, containment will be isolated, and become enclosure space, and the temperature and pressure sharply raised is born by containment structure entirely.This design needs containment to have larger free volume and thickness of shell, and after also needing supporting accident, containment step-down and hot guiding system have higher performance.After accident, the airtight containment of nuclear power plant needs to face two problems, and a problem is the derivation of reactor waste, if lose waste heat to derive mechanism, the temperature and pressure in containment can continue to rise, until containment rupture; Another problem is, in major accident, may produce the considerable hydrogen of volume in containment, if these hydrogen reach explosion limits at localized clusters or total amount, then contingent hydrogen explosion will make containment thoroughly lose efficacy.Derive problem for reactor waste after accident, second generation nuclear power technology (M310) and European Generation Ⅲ (EPR) mainly take active means; U.S.'s Generation Ⅲ (AP1000) then takes non-active means, and reactor waste is exported to atmospheric heat trap by the evaporation that Passive containment cooling system relies on steel containment vessel outside surface spray water film completely.For in serious thing, produce the problem of hydrogen in containment, usually take the mode that hydrogen recombiner or hydrogen igniter are set to solve.
Summary of the invention
For deficiency existing in prior art, the object of the present invention is to provide a kind of passive containment accidental depressurization system with pressure release gas entrapments function, partial high pressure mixed gas can be imported pressure release air bag by special pressure release passage, to realize the suppression raised pressure in containment.
The present invention is for solving the problems of the technologies described above adopted technical scheme as described below:
A kind of passive containment accidental depressurization system with gas entrapments function of releasing, comprise containment, containment arranges containment penetration, it is characterized in that: described containment arranges the accidental depressurization passage running through containment by containment penetration, the porch of accidental depressurization passage arranges high efficiency particulate air filter and isolation valve, and the end of accidental depressurization passage is connect by pipeline docking mechanism and the pressure release airbags be arranged on outside containment.
Further, described isolation valve has two, and two isolation valves are arranged in series on accidental depressurization passage.
Further, described pressure release air bag comprises layer structure and inner bag, and the inner bottom of pressure release air bag arranges condensate water retention structure, and the top of pressure release air bag arranges expansion mechanism step by step.
Further, described pressure release air bag is arranged on guide rail car, arranges horizontal guide rail and inclined guide rails below guide rail car.
Further, described pressure release air bag arranges dragrope, and dragrope is connected with haulage gear.
Further, described isolation valve arranges general passive control module as driving mechanism.
Further again, described accidental depressurization passage arranges stage casing non-return valve in the centre of two isolation valves.
Beneficial effect of the present invention is as follows: the present invention runs through the accidental depressurization passage of containment by arranging, and the isolation valve of high efficiency particulate air filter and two series connection is set in the porch of accidental depressurization passage, connect by pipeline docking mechanism and the pressure release airbags be arranged on outside containment at the end of accidental depressurization passage, there is following effect: the sharply boosting that can suppress containment after nuclear power plant's accident; The partial air in containment can be discharged at the accident initial stage, make the overall heat exchange enhancing efficiency of containment in accident process; The risk that hydrogen explosion occurs in major accident working condition safety shell can be reduced; Can be used for the containing (when pressure release being carried out to containment according to administrative instruction) of accident middle and later periods containment pressure release gas; By adopting general passive flow control unit, the startup of this containment pressure relief system and whole service process can not rely on external impetus supply completely, therefore have non-energy dynamic characteristic.
Accompanying drawing explanation
Fig. 1 is containment accidental depressurization system architecture schematic diagram;
Fig. 2 is general passive control module structural representation.
Embodiment
Below in conjunction with the drawings and specific embodiments, present invention is described.
When there is extensive Mass and energy release accident in npp safety shell, airtight containment needs to face two problems, and a problem is the derivation of reactor waste, if lose waste heat to derive mechanism, temperature and pressure in containment can continue to rise, until containment rupture; Another problem is, in major accident, may produce the considerable hydrogen of volume in containment, if these hydrogen reach explosion limits at localized clusters or total amount, then contingent hydrogen explosion will make containment thoroughly lose efficacy.When can there is extensive Mass and energy release accident in the passive containment accidental depressurization system with gas entrapments function of releasing of the present invention in npp safety shell, partial high pressure mixed gas is imported pressure release air bag after filtering by special pressure release passage, to realize the suppression raised pressure in containment.Passive containment accidental depressurization system has the pressure release air bag for containment accidental depressurization and gas entrapments, this pressure release air bag internal freedom volume when unaerated is very little, can ignore, inflation and pressure release air bag has double-decker, there is the impermeability of height, after can be prevented, the inner gas leak containing radioactive particulate, the surface of this pressure release air bag has certain heat-sinking capability, its internal gas can be made to lower the temperature gradually, and make the water vapor condensation in gas; This pressure release air bag is connected with containment by pipeline docking mechanism, this pipeline docking mechanism can realize containment and pressure release air bag docking when keeping leakproofness be separated, the pressure release air bag inflated moves to default processing region by operated from a distance, relief pipeline can reconnect pressure release air bag for subsequent use, to realize repeatedly pressure release according to demand.Except the transfer of pressure release air bag and again except access operation, the startup of passive containment accidental depressurization system and whole service process can not rely on external impetus supply completely, therefore have non-can dynamic characteristic.
The passive containment accidental depressurization system with gas entrapments function of releasing of the present invention, as shown in Figure 1, comprise containment 19, pressure vessel 20 and steam generator 21 is comprised in containment 19, pressure vessel 20 is connected with steam generator 21, containment 19 is arranged containment penetration 17, containment 19 arranges the accidental depressurization passage 1 running through containment 19 by containment penetration 17, the porch of accidental depressurization passage 1 arranges the isolation valve 3 of high efficiency particulate air filter 2 and two series connection, 5, the quantity of isolation valve is not limited to two, isolation valve 3, the centre of 5 arranges stage casing non-return valve 4, the end of accidental depressurization passage 1 is connected with the pressure release air bag 7 be arranged on outside containment 19 by pipeline docking mechanism 6.Wherein, high efficiency particulate air filter 2 is in order to reduce the radioactive level of pressure release gas; Isolation valve 3 is for the isolation of containment under nominal situation, general maintenance is normally closed, open under accident conditions, can use to make pressure release passage, containment isolation after another isolation valve 5 terminates for accidental depressurization, general maintenance is often opened, and closes, realize the isolation under containment accident conditions after pressure release completes; The unlatching of stage casing non-return valve 4 needs certain pressure reduction, if gas forward pressure reduction does not reach threshold value before and after stage casing non-return valve 4, then stage casing non-return valve 4 keeps cutting out, or goes to closed condition from opening; Pipeline docking mechanism 6 has the impermeability of height, can prevent in gas replenishment process, containment internal gas leaks, after pressure release terminates, pipeline docking mechanism 6 pairs of accidental depressurization passages 1 are implemented to block, then be divided into two and realize being separated of pressure release air bag 7 and accidental depressurization passage 1, and make passive containment accidental depressurization system proceed to preparation mated condition.
Pressure release air bag 7 comprises layer structure 15 and inner bag 8, there is the impermeability of height, after inflation can be prevented, the inner gas leak containing radioactive particulate, pressure release air bag 7 designs for tight structure, when unaerated, internal freedom volume is very little, can ignore, pressure release air bag 7 surface has certain heat-sinking capability, its internal gas can be made to lower the temperature gradually, and make the water vapor condensation in gas, the inner bottom of pressure release air bag 7 arranges condensate water retention structure 14, for collecting in air bag, there is radioactive condensate water, the top of pressure release air bag 7 arranges expansion mechanism 16 step by step, condensate water retention structure 14 and step by step expansion mechanism 16 in the industry existing mature technology can utilize, belong to common practise to those skilled in the art.Pressure release air bag 7 is arranged on guide rail car 9, horizontal guide rail 12 and inclined guide rails 13 are set below guide rail car 9, pressure release air bag 7 arranges dragrope 10, dragrope 10 is connected with haulage gear 11, pressure release air bag 7 can glide along inclined guide rails 13 and horizontal guide rail 12, to realize the connection with accidental depressurization passage 1; Or after pressure release air bag 7 completes inflation, draw to presetting processing region via haulage gear 11 and dragrope 10.
Isolation valve 3,5 arranges general passive control module 18, as shown in Figure 2, general passive control module 18 has a structural container 30, unit fluid intake 27 and unit fluid egress point 28, H type hydraulic drive mechanisms 23, pressure transducer 24, ups power for subsequent use 22 and PLC control module 29 are coupled together by unit supply line 26 by the inside of general passive control module 18, H type hydraulic drive mechanisms 23, pressure transducer 24 and PLC control module 29 are coupled together by cell data line 25.
The passive containment accidental depressurization system with gas entrapments function of releasing of the present invention runs through the accidental depressurization passage of containment by setting, and the isolation valve of high efficiency particulate air filter and two series connection is set in the porch of accidental depressurization passage, connect by pipeline docking mechanism and the pressure release airbags be arranged on outside containment at the end of accidental depressurization passage, there is following effect: the sharply boosting that can suppress containment after nuclear power plant's accident; The partial air in containment can be discharged at the accident initial stage, make the overall heat exchange enhancing efficiency of containment in accident process; The risk that hydrogen explosion occurs in major accident working condition safety shell can be reduced; Can be used for the containing (when pressure release being carried out to containment according to administrative instruction) of accident middle and later periods containment pressure release gas; By adopting general passive flow control unit, the startup of this containment pressure relief system and whole service process can not rely on external impetus supply completely, therefore have non-energy dynamic characteristic.
It should be noted that; above-mentioned specific embodiment is only exemplary; under above-mentioned instruction of the present invention, those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improve or distortion all drops in protection scope of the present invention.It will be understood by those skilled in the art that specific descriptions are above to explain object of the present invention, not for limiting the present invention.Protection scope of the present invention is by claim and equivalents thereof.
Claims (5)
1. one kind has the passive containment accidental depressurization system of gas entrapments function of releasing, comprise containment (19), containment (19) is arranged containment penetration (17), it is characterized in that: described containment (19) arranges the accidental depressurization passage (1) running through containment (19) by containment penetration (17), the porch of accidental depressurization passage (1) arranges high efficiency particulate air filter (2) and isolation valve, the end of accidental depressurization passage (1) by pipeline docking mechanism (6) be arranged on containment (19) pressure release air bag (7) outward and be connected, described isolation valve has two, and two isolation valves (3,5) are arranged in series on accidental depressurization passage (1), and the centre of two isolation valves (3,5) arranges stage casing non-return valve (4).
2. a kind of passive containment accidental depressurization system with gas entrapments function of releasing as claimed in claim 1, it is characterized in that: described pressure release air bag (7) comprises layer structure (15) and inner bag (8), the inner bottom of pressure release air bag (7) arranges condensate water retention structure (14), and the top of pressure release air bag (7) arranges expansion mechanism (16) step by step.
3. a kind of passive containment accidental depressurization system with gas entrapments function of releasing as claimed in claim 1, it is characterized in that: described pressure release air bag (7) is arranged on guide rail car (9), horizontal guide rail (12) and inclined guide rails (13) are set below guide rail car.
4. a kind of passive containment accidental depressurization system with gas entrapments function of releasing as described in claim 1 or 2 or 3, it is characterized in that: described pressure release air bag (7) arranges dragrope (10), and dragrope (10) is connected with haulage gear (11).
5. a kind of passive containment accidental depressurization system with gas entrapments function of releasing as claimed in claim 1, is characterized in that: described isolation valve (3,5) arranges general passive control module (18) as driving mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221954.6A CN102750993B (en) | 2012-06-28 | 2012-06-28 | There is the passive containment accidental depressurization system of gas entrapments function of releasing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221954.6A CN102750993B (en) | 2012-06-28 | 2012-06-28 | There is the passive containment accidental depressurization system of gas entrapments function of releasing |
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| Publication Number | Publication Date |
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| CN102750993A CN102750993A (en) | 2012-10-24 |
| CN102750993B true CN102750993B (en) | 2015-09-30 |
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| CN201210221954.6A Active CN102750993B (en) | 2012-06-28 | 2012-06-28 | There is the passive containment accidental depressurization system of gas entrapments function of releasing |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311872B (en) * | 2013-06-28 | 2016-06-15 | 3M中国有限公司 | Air bag type protection box for cable joint |
| CN103871495B (en) * | 2014-03-07 | 2016-06-29 | 长江勘测规划设计研究有限责任公司 | Containment pressure relief system under underground nuclear power station major accident |
| CN104332189B (en) * | 2014-09-18 | 2017-02-15 | 中国核电工程有限公司 | System for finally guaranteeing functions of containment vessel and preventing large-scale radioactive release and method thereof |
| CN104409112B (en) * | 2014-12-03 | 2017-07-04 | 中国核动力研究设计院 | Containment recirculating system |
| CN107314238A (en) * | 2016-04-26 | 2017-11-03 | 合肥艾普拉斯环保科技有限公司 | A kind of explosion-proof tank |
| CN109935372B (en) * | 2017-04-14 | 2021-04-20 | 合肥工业大学 | Pressure relief device of reinforced concrete containment vessel of nuclear power plant |
| CN107221361B (en) * | 2017-05-10 | 2020-10-16 | 中国核电工程有限公司 | Early depressurization system for containment accident of nuclear power plant |
| CN110440389A (en) * | 2019-08-15 | 2019-11-12 | 重庆众夏科技有限公司 | A kind of fire-fighting emergent evacuation overbottom pressure monitoring method and system |
| CN112071454B (en) * | 2020-09-15 | 2023-01-03 | 哈尔滨工程大学 | Passive combined heat removal system with integrated heat release trap |
| CN113421662B (en) * | 2021-06-18 | 2022-04-15 | 中国核动力研究设计院 | Natural circulation cooling method under failure of liquid level indication of pressure vessel of nuclear power plant |
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| JP5238649B2 (en) * | 2009-09-08 | 2013-07-17 | 株式会社東芝 | Reactor containment vessel and nuclear power plant using the same |
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| EP2366182A1 (en) * | 2008-11-17 | 2011-09-21 | Nuscale Power, Inc. | Seismically isolated containment vessel |
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| CN102750993A (en) | 2012-10-24 |
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