CN102750993A - Passive containment accident pressure-releasing system capable of containing discharged gas - Google Patents
Passive containment accident pressure-releasing system capable of containing discharged gas Download PDFInfo
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- CN102750993A CN102750993A CN2012102219546A CN201210221954A CN102750993A CN 102750993 A CN102750993 A CN 102750993A CN 2012102219546 A CN2012102219546 A CN 2012102219546A CN 201210221954 A CN201210221954 A CN 201210221954A CN 102750993 A CN102750993 A CN 102750993A
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- containment
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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 invention relates to a passive containment accident pressure-releasing system capable of containing discharged gas. The system comprises a containment (19) provided with a containment penetration piece (17) through which the containment (19) is provided with an accident pressure-releasing channel (1) penetrating the containment (19), wherein an inlet of the accident pressure-releasing channel (1) is provided with a high-efficiency filter (2) and a isolating valve, and the end part is connected with a pressure-releasing airbag (7) which is arranged outside the containment (19) through a pipeline butt-joint mechanism (6). Accordingly, the system can introduce part of high-pressure mixed gas into the pressure-releasing airbag (7) through the pressure-releasing channel (1) to realize inhibition of pressure rising in the containment, and starting and the whole operating process of the accident pressure-releasing system do not depend on external power supply completely by using a generalized passive control unit (18), thereby having passive features.
Description
Technical field
The invention belongs to the containment pressure relief system, be specially a kind of non-passive safety shell accidental depressurization system that pressure release gas contains function that has.
Background technology
Airtight containment is a nuclear power plant when having an accident, and prevents the important barrier that radiomaterial leaks.Generally, the back containment that has an accident will be isolated, and become enclosure space, and the temperature and pressure that sharply raises is born by containment structure entirely.This design demand containment has bigger free volume and thickness of shell, also needs after the supporting accident containment step-down and thermal conductance to go out system and has higher performance.After the accident, the airtight containment of nuclear power plant need face two problems, and a problem is the derivation of reactor waste, derives mechanism if lose waste heat, and the temperature and pressure in the containment can continue to rise, until containment rupture; Another problem is, in major accident, possibly produce the considerable hydrogen of volume in the containment, if these hydrogen assemble in the part or total amount reaches explosion limits, then contingent hydrogen explosion will make containment thoroughly lose efficacy.Derive problem for accident afterreaction heap waste heat, second generation nuclear power technology (M310) and European third generation nuclear power technology (EPR) are mainly taked active means; U.S. third generation nuclear power technology (AP1000) then takes non-active means, and the evaporation that non-passive safety shell cooling system relies on steel containment vessel outside surface spray moisture film fully exports to the atmospheric heat trap with reactor waste.In serious thing, produce the problem of hydrogen in the containment, the mode of taking usually hydrogen recombiner or hydrogen lighter are set solves.
Summary of the invention
To existing deficiency in the prior art; The object of the present invention is to provide a kind of non-passive safety shell accidental depressurization system that pressure release gas contains function that has; Can the part high pressure mixed gas be imported the pressure release air bag through special pressure release passage, with the inhibition that realizes the containment internal pressure is raise.
The technical scheme that the present invention adopts by solving the problems of the technologies described above is described as follows:
A kind of non-passive safety shell accidental depressurization system with the gas containing function of releasing; Comprise containment; Containment penetration is set on the containment; It is characterized in that: said containment runs through the accidental depressurization passage of containment through the containment penetration setting, and the porch of accidental depressurization passage is provided with high efficiency particulate air filter and isolation valve, and the end of accidental depressurization passage is connected through the pipeline docking mechanism pressure release air bag outer with being arranged on containment.
Further, described isolation valve has two, and two isolation valve series connection are arranged on the accidental depressurization passage.
Further, said pressure release air bag comprises layer structure and inner bag, and the inner bottom of pressure release air bag is provided with condensate water and is detained structure, and the top of pressure release air bag is provided with expansion mechanism step by step.
Further, said pressure release air bag is arranged on the guide rail car, and the guide rail car below is provided with horizontal guide rail and inclined guide rails.
Further, said pressure release air bag is provided with dragrope, and dragrope is connected with haulage gear.
Further, said isolation valve is provided with the non-active control module of broad sense as driving mechanism.
Further again, said accidental depressurization passage is provided with the stage casing non-return valve in the centre of two isolation valves.
Beneficial effect of the present invention is following: the present invention runs through the accidental depressurization passage of containment through setting; And the isolation valve of high efficiency particulate air filter and two series connection is set in the porch of accidental depressurization passage; Be connected with pressure release air bag outside being arranged on containment through the pipeline docking mechanism at the end of accidental depressurization passage, have following effect: can suppress sharply boosting of containment after nuclear power plant's accident; Can discharge the part air in the containment at the accident initial stage, the whole heat exchanger efficiency of containment in accident process promoted; Can reduce the risk that hydrogen explosion takes place in the major accident working condition safety shell; Can be used for the containing (when containment being carried out pressure release) of accident middle and later periods containment pressure release gas according to administrative instruction; Through adopting the non-active fluid control module of broad sense, the startup of this containment pressure relief system and whole service process can not rely on the external impetus supply fully, therefore have non-ability dynamic characteristic.
Description of drawings
Fig. 1 is a containment accidental depressurization system architecture synoptic diagram;
Fig. 2 is the non-active control module structural representation of broad sense.
Embodiment
Present invention is described below in conjunction with accompanying drawing and specific embodiment.
When extensive mass-energy release accident takes place in the npp safety shell when; Airtight containment need face two problems, and a problem is the derivation of reactor waste, derives mechanism if lose waste heat; Temperature and pressure in the containment can continue to rise, until containment rupture; Another problem is, in major accident, possibly produce the considerable hydrogen of volume in the containment, if these hydrogen assemble in the part or total amount reaches explosion limits, then contingent hydrogen explosion will make containment thoroughly lose efficacy.Of the present invention when having non-passive safety shell accidental depressurization system that the gas of releasing contains function extensive mass-energy release accident can take place in the npp safety shell; The part high pressure mixed gas is imported the pressure release air bag after filtering through special pressure release passage, with the inhibition that realizes the containment internal pressure is raise.Non-passive safety shell accidental depressurization system has the pressure release air bag that is used for containment accidental depressurization and gas containing, and this pressure release air bag internal freedom volume when unaerated is very little, can ignore; And the pressure release air bag has double-decker, has the impermeability of height, after can preventing to inflate; The gas leak of radioactive particulate is contained in inside; The surface of this pressure release air bag has certain heat-sinking capability, and its internal gas is lowered the temperature gradually, and makes the water vapor condensation in the gas; This pressure release air bag links to each other with containment through the pipeline docking mechanism; This pipeline docking mechanism can the butt joint that keeps realizing under the situation of leakproofness containment and pressure release air bag with separate; The pressure release air bag that inflation is accomplished can move to preset processing region through operated from a distance; Relief pipeline can connect subsequent use pressure release air bag again, to realize repeatedly pressure release according to demand.Except that the transfer of pressure release air bag and again the access operation, the startup and the whole service process of non-passive safety shell accidental depressurization system can not rely on the external impetus supply fully, therefore have non-can dynamic characteristic.
Non-passive safety shell accidental depressurization system with the gas containing function of releasing of the present invention; As shown in Figure 1; Comprise containment 19, comprise pressure vessel 20 and steam generator 21 in the containment 19, pressure vessel 20 is connected with steam generator 21; Containment penetration 17 is set on the containment 19; Containment 19 is provided with the accidental depressurization passage 1 that runs through containment 19 through containment penetration 17, and the porch of accidental depressurization passage 1 is provided with the isolation valve 3,5 of high efficiency particulate air filter 2 and two series connection, and the quantity of isolation valve is not limited to two; The centre of isolation valve 3,5 is provided with stage casing non-return valve 4, and the end of accidental depressurization passage 1 is connected through the pipeline docking mechanism 6 pressure release air bags 7 outer with being arranged on containment 19.Wherein, high efficiency particulate air filter 2 is in order to reduce the radioactive level of pressure release gas; Isolation valve 3 is used for the isolation of containment under the nominal situation; General maintenance is normally closed, under accident conditions, opens, so that pressure release passage can be used; The containment that another isolation valve 5 is used for after accidental depressurization finishes is isolated; General maintenance is often opened, and after pressure release is accomplished, closes, and realizes the isolation under the containment accident conditions; The unlatching of stage casing non-return valve 4 needs certain pressure reduction, if non-return valve 4 front and back gas forward pressure reduction in stage casing do not reach threshold value, then stage casing non-return valve 4 keeps shut, or goes to closed condition from opening; Pipeline docking mechanism 6 has the impermeability of height; Can prevent in the gas replenishment process; The containment internal gas leaks, and after pressure release finished, 6 pairs of accidental depressurization passages of pipeline docking mechanism 1 were implemented to block; Then be divided into two and realize separating of pressure release air bag 7 and accidental depressurization passage 1, and make non-passive safety shell accidental depressurization system change the preparation mated condition over to.
Pressure release air bag 7 comprises layer structure 15 and inner bag 8, has the impermeability of height, after can preventing to inflate; The gas leak of radioactive particulate is contained in inside, and pressure release air bag 7 is for tight structure designs, and the internal freedom volume is very little when unaerated; Can ignore, pressure release air bag 7 surfaces have certain heat-sinking capability, and its internal gas is lowered the temperature gradually; And make the water vapor condensation in the gas; The inner bottom of pressure release air bag 7 is provided with condensate water and is detained structure 14, is used to collect have radioactive condensate water in the air bag, and the top of pressure release air bag 7 is provided with expansion mechanism 16 step by step; Condensate water is detained structure 14 and in industry, has mature technology with expansion mechanism 16 step by step and can utilize, and belongs to common practise to those skilled in the art.Pressure release air bag 7 is arranged on the guide rail car 9; Guide rail car 9 belows are provided with horizontal guide rail 12 and inclined guide rails 13; Pressure release air bag 7 is provided with dragrope 10; Dragrope 10 is connected with haulage gear 11, and pressure release air bag 7 can glide along inclined guide rails 13 and horizontal guide rail 12, to realize and being connected of accidental depressurization passage 1; Or after pressure release air bag 7 is accomplished inflation, via haulage gear 11 and the extremely preset processing region of dragrope 10 tractions.
Isolation valve 3,5 is provided with the non-active control module 18 of broad sense; As shown in Figure 2; The non-active control module 18 of broad sense has a structural container 30, a unit fluid intake 27 and a unit fluid egress point 28; The inside of the non-active control module 18 of broad sense couples together H type hydro powered mechanism 23, pressure transducer 24, subsequent use ups power 22 and PLC control module 29 through unit supply line 26, through cell data line 25 H type hydro powered mechanism 23, pressure transducer 24 and PLC control module 29 is coupled together.
Non-passive safety shell accidental depressurization system with the gas containing function of releasing of the present invention runs through the accidental depressurization passage of containment through setting; And the isolation valve of high efficiency particulate air filter and two series connection is set in the porch of accidental depressurization passage; Be connected with pressure release air bag outside being arranged on containment through the pipeline docking mechanism at the end of accidental depressurization passage, have following effect: can suppress sharply boosting of containment after nuclear power plant's accident; Can discharge the part air in the containment at the accident initial stage, the whole heat exchanger efficiency of containment in accident process promoted; Can reduce the risk that hydrogen explosion takes place in the major accident working condition safety shell; Can be used for the containing (when containment being carried out pressure release) of accident middle and later periods containment pressure release gas according to administrative instruction; Through adopting the non-active fluid control module of broad sense, the startup of this containment pressure relief system and whole service process can not rely on the external impetus supply fully, therefore have non-ability dynamic characteristic.
It should be noted that; Above-mentioned specific embodiment only is 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 the foregoing description, 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 top specific descriptions just in order to explain the object of the invention, are not to be used to limit the present invention.Protection scope of the present invention is limited claim and equivalent thereof.
Claims (7)
1. one kind has the non-passive safety shell accidental depressurization system that the gas of releasing contains function; Comprise containment (19); Containment penetration (17) is set on the containment (19); It is characterized in that: said containment (19) runs through the accidental depressurization passage (1) of containment (19) through containment penetration (17) setting; The porch of accidental depressurization passage (1) is provided with high efficiency particulate air filter (2) and isolation valve, and the end of accidental depressurization passage (1) is connected through pipeline docking mechanism (6) the pressure release air bag (7) outer with being arranged on containment (19).
2. a kind of non-passive safety shell accidental depressurization system that the gas of releasing contains function that has as claimed in claim 1, it is characterized in that: described isolation valve has two, and two isolation valves (3,5) series connection is arranged on the accidental depressurization passage (1).
3. a kind of non-passive safety shell accidental depressurization system that the gas of releasing contains function that has as claimed in claim 1; It is characterized in that: said pressure release air bag (7) comprises layer structure (15) and inner bag (8); The inner bottom of pressure release air bag (7) is provided with condensate water and is detained structure (14), and the top of pressure release air bag (7) is provided with expansion mechanism (16) step by step.
4. a kind of non-passive safety shell accidental depressurization system that the gas of releasing contains function that has as claimed in claim 1; It is characterized in that: said pressure release air bag (7) is arranged on the guide rail car (9), and the guide rail car below is provided with horizontal guide rail (12) and inclined guide rails (13).
5. like claim 1 or 3 or 4 described a kind of non-passive safety shell accidental depressurization systems that the gas of releasing contains function that have, it is characterized in that: said pressure release air bag (7) is provided with dragrope (10), and dragrope (10) is connected with haulage gear (11).
6. according to claim 1 or claim 2 a kind of has the non-passive safety shell accidental depressurization system that the gas of releasing contains function, and it is characterized in that: said isolation valve (3,5) is provided with the non-active control module of broad sense (18) as driving mechanism.
7. a kind of non-passive safety shell accidental depressurization system that the gas of releasing contains function that has as claimed in claim 2, it is characterized in that: said accidental depressurization passage (1) is provided with stage casing non-return valve (4) in the centre of two isolation valves (3,5).
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 |
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN102750993A true CN102750993A (en) | 2012-10-24 |
| CN102750993B CN102750993B (en) | 2015-09-30 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311872A (en) * | 2013-06-28 | 2013-09-18 | 3M中国有限公司 | Air bag type protection box for cable joint |
| CN103871495A (en) * | 2014-03-07 | 2014-06-18 | 长江勘测规划设计研究有限责任公司 | Containment pressure relieving system of underground nuclear power station in serious accidents |
| CN104332189A (en) * | 2014-09-18 | 2015-02-04 | 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 |
| CN104409112A (en) * | 2014-12-03 | 2015-03-11 | 中国核动力研究设计院 | Containment recycling system |
| CN107123447A (en) * | 2017-04-14 | 2017-09-01 | 合肥工业大学 | A kind of nuclear power plant's reinforced concrete containment explosion-proof decompression device |
| CN107221361A (en) * | 2017-05-10 | 2017-09-29 | 中国核电工程有限公司 | A kind of npp safety shell accident early stage depressurizing 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 |
| 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 |
| CN112071454A (en) * | 2020-09-15 | 2020-12-11 | 哈尔滨工程大学 | Passive combined heat removal system with integrated heat release trap |
| CN113421662A (en) * | 2021-06-18 | 2021-09-21 | 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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Cited By (18)
| 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 |
| CN103311872A (en) * | 2013-06-28 | 2013-09-18 | 3M中国有限公司 | Air bag type protection box for cable joint |
| CN103871495A (en) * | 2014-03-07 | 2014-06-18 | 长江勘测规划设计研究有限责任公司 | Containment pressure relieving system of underground nuclear power station in serious accidents |
| 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 |
| CN104332189A (en) * | 2014-09-18 | 2015-02-04 | 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 |
| 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 |
| CN104409112A (en) * | 2014-12-03 | 2015-03-11 | 中国核动力研究设计院 | Containment recycling system |
| 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 |
| CN107123447A (en) * | 2017-04-14 | 2017-09-01 | 合肥工业大学 | A kind of nuclear power plant's reinforced concrete containment explosion-proof decompression device |
| CN107123447B (en) * | 2017-04-14 | 2019-04-09 | 合肥工业大学 | A kind of nuclear power plant's reinforced concrete containment explosion-proof decompression device |
| CN109935372A (en) * | 2017-04-14 | 2019-06-25 | 合肥工业大学 | A kind of pressure relief device of nuclear power plant's reinforced concrete containment |
| CN107221361A (en) * | 2017-05-10 | 2017-09-29 | 中国核电工程有限公司 | A kind of npp safety shell accident early stage depressurizing system |
| 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 |
| CN112071454A (en) * | 2020-09-15 | 2020-12-11 | 哈尔滨工程大学 | Passive combined heat removal system with integrated heat release trap |
| 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 |
| CN113421662A (en) * | 2021-06-18 | 2021-09-21 | 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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