CN103489490A - Passive containment vessel spraying device - Google Patents
Passive containment vessel spraying device Download PDFInfo
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- CN103489490A CN103489490A CN201210193939.5A CN201210193939A CN103489490A CN 103489490 A CN103489490 A CN 103489490A CN 201210193939 A CN201210193939 A CN 201210193939A CN 103489490 A CN103489490 A CN 103489490A
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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 belongs to a device for spraying and cooling of the outer surface of a containment vessel in a passive mode, and particularly relates to the nuclear reactor containment vessel spraying and cooling device. The passive containment vessel spraying device comprises a safe spraying box, the safe spraying box is connected with an annular spraying header through a water transmission pipeline, the annular spraying header is arranged above a containment vessel dome, and a normally closed valve assembly is arranged between the water transmission pipeline and the annular spray header. The passive containment vessel spraying device has the advantages that the passive containment vessel spraying device is different from an active containment vessel interior spraying system of a conventional nuclear power plant and adopts an external spraying mode, does not need a safety-level emergency power supply and active components, and can realize short-term and long-term cooling of the containment vessel during superposition of a reactor loss-of-coolant accident or a main steam pipeline fracture accident with a station blackout accident and other superposition of multiple extreme accidents.
Description
Technical field
The invention belongs to a kind of with non-enabling fashion to containment outside surface spray cooling device, be specifically related to a kind of nuclear reactor safety shell spray cooling device.
Background technology
Containment is as the engineered safeguards features of nuclear power plant, but the protective reaction heap avoids the harm of external event, last one barrier contained as the nuclear reactor radioactivity after accident, but protection of the environment and the public avoid excess radiation.After reactor generation loss of-coolant accident (LOCA) or main steam pipe break accident, a large amount of mass-energy is released in containment, causes that containment temperature and pressure raise rapidly.For preventing the containment over-temp and over-pressure, must in time the containment heat be derived.
At present, the common nuclear power plant in countries in the world mostly adopts active pump to drive the spray equipment water to carry out decrease temperature and pressure to containment inside spray, must configuration safe level emergency power pack, can't realization response heap loss of-coolant accident (LOCA) or containment short-term and cooling for a long time during the multiple extreme accidents stack such as main steam line rupture accident stack station blackout accident.
The AP1000 unit Passive containment cooling system of US Westinghouse company's exploitation relies on gravity spraying cooling metal containment by the elevated tank of being located on the shielding factory building, but there is following shortcoming in it: 1. 3000 tons of elevated tanks are given shielding factory building antidetonation because of liquid-solid coupling effect and are brought totally unfavorable impact, and the engineering cost is high; 2. the metal containment cooling system is provided with current distribution system and the air guide structure of bulky complex, and construction costs and maintenance cost are high; Although 3. adopted the current distribution structure, still can't eliminate the current channel effect, can't realize containment surface moisture film uniform fold, considerable part containment surface, can't heat conduction in dry state.
Summary of the invention
The object of the present invention is to provide a kind of system simple, cost and maintenance cost are low, reliability is high, can be after the major accidents such as reactor loss of-coolant accident (LOCA) or main steam aqueduct break accident the station blackout that superposes with non-enabling fashion to containment outside surface spraying cooling, guarantee the non-passive safety shell spray equipment of the integrality of containment.
The present invention realizes like this, a kind of non-passive safety shell spray equipment, it comprises the peace spray box, the peace spray box connects annular spray thrower by aqueduct, the annular spray thrower is arranged on the top of containment dome, between aqueduct and annular spray thrower, the normally close valve group is installed.
Described annular spray thrower comprises 2 ring shape showers, and every ring shape shower all is connected with aqueduct, has spillway hole on circular spray tube.
Described normally close valve group comprises respectively one of electrical ball valve in parallel and hand valve.
Advantage of the present invention is, non-passive safety shell spray equipment is different from the inner spray system of the active containment in traditional core power station, but adopt outside spray, do not need safe level emergency power pack and active component, can realization response containment short-term and cooling for a long time during the multiple extreme accidents stack such as heap loss of-coolant accident (LOCA) or main steam line rupture accident stack station blackout accident.Also being different from the AP1000 elevated tank relies on gravity spraying cooling metal containment and complicated current to distribute patent structure, but employing compressed air-driven, realize that by the multi-ring annular spray thrower containment dome outside surface evenly sprays, the basic current channel effect of eliminating, can realize that containment outside surface maximum area is awash.System of the present invention is simple, and cost and maintenance cost are low, and reliability is high, further improves security and the economy of nuclear energy.
The accompanying drawing explanation
Fig. 1 is a kind of non-passive safety shell spray equipment structural representation provided by the present invention;
Fig. 2 is annular spray thrower structural representation.
In figure, 1 peace spray box, 2 aqueducts, 3 annular spray throwers, 4 normally close valve groups, 5 containment domes, 6 steam outlets, 7 steam-condensations, 8 pressurized air, 9 spillway holes.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, it comprises the spherical peace spray box 1 of steel a kind of non-passive safety shell spray equipment, be filled with water and pressurized air 8 in peace spray box 1, peace spray box 1 connects annular spray thrower 3 by aqueduct 2, annular spray thrower 3 is arranged on the top of containment dome 5, between aqueduct 2 and annular spray thrower 3, normally close valve group 4 is installed, wherein, normally close valve group 4 comprises respectively one of electrical ball valve in parallel and hand valve.
As shown in Figure 2, annular spray thrower 3 comprises 2 ring shape showers, and every ring shape shower all is connected with aqueduct 2, has a plurality of spillway holes 9 on circular spray tube.
The present embodiment heat output of reactor is about 500MW, and the metal containment internal diameter is 28m, and steel peace spray box structure is hybrid five spherical storage tanks, adopts the inside and outside rust protection paint that is coated with of carbon steel or low alloy steel material, and its internal diameter is 15m, and the internal water loading amount is 1500m
3, internal compression air original pressure is about 9bar, adopts the supporting of reinforced concrete skirt to be fixed on ground elevation.The normally close valve group is provided with each of electrical ball valve and hand valve.As shown in Figure 2, the aqueduct diameter is 158mm, and annular spray thrower is established with high inside and outside 2 circle (can establish multi-turn according to the containment diameter) annular spray throwers with one heart, and annular spray thrower is provided with numerous spillway hole, and ejection water droplet mean diameter is 2mm.
After reactor generation loss of-coolant accident (LOCA) or main steam pipe break accident, a large amount of mass-energy is released in containment, causes that containment temperature and pressure raise rapidly.For preventing the containment over-temp and over-pressure, must in time the containment heat be derived.Non-passive safety shell spray equipment is after receiving containment high-voltage signal (pressure is 0.24MPa), motorized valve in the normally close valve group is opened automatically, and the water in compressed air-driven steel peace spray box is realized evenly spray by the annular spray thrower of being located at containment dome top to containment dome outside surface.The present invention can maintain the metal containment spray and reach 72 hours.Steel peace spray box also can be fire-fighting provides alternate source.
The invention provides a kind of non-passive safety shell spray equipment, device is comprised of the spherical peace spray box of steel, aqueduct, annular spray thrower and normally close valve group etc., and annular spray thrower is provided with several spillway holes.After reactor generation loss of-coolant accident (LOCA) or main steam pipe break accident, a large amount of mass-energy is released in containment, causes that containment temperature and pressure raise rapidly.For preventing the containment over-temp and over-pressure, must in time the containment heat be derived.Non-passive safety shell spray equipment is after receiving containment High Temperature High Pressure signal, the normally close valve group is opened automatically, and the water in compressed air-driven steel peace spray box is realized evenly spray by 2 circles or the multi-ring annular spray thrower of being located at containment dome top to containment dome outside surface.Steel peace spray box independently is arranged on ground elevation, also can be fire-fighting alternate source is provided.Can establish the spherical peace spray box of a plurality of steel according to the containment diameter is that containment dome outside surface sprays simultaneously or successively.
The present invention can be used for nuclear power station and core heat supply factory containment outside surface is implemented spraying cooling, can improve security and the economy of nuclear energy.It neither needs the safe level emergency power pack, also is different from the AP1000 elevated tank and relies on gravity spraying cooling metal containment.
Claims (3)
1. a non-passive safety shell spray equipment, it is characterized in that: it comprises peace spray box (1), peace spray box (1) connects annular spray thrower (3) by aqueduct (2), annular spray thrower (3) is arranged on the top of containment dome (5), between aqueduct (2) and annular spray thrower (3), normally close valve group (4) is installed.
2. a kind of non-passive safety shell spray equipment as claimed in claim 1, it is characterized in that: described annular spray thrower (3) comprises at least 1 ring shape shower, every ring shape shower all is connected with aqueduct (2).Have spillway hole (9) on circular spray tube.
3. a kind of non-passive safety shell spray equipment as claimed in claim 1 is characterized in that: described normally close valve group (7) comprises each of electrical ball valve in parallel and hand valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193939.5A CN103489490A (en) | 2012-06-13 | 2012-06-13 | Passive containment vessel spraying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193939.5A CN103489490A (en) | 2012-06-13 | 2012-06-13 | Passive containment vessel spraying device |
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| CN103489490A true CN103489490A (en) | 2014-01-01 |
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| CN201210193939.5A Pending CN103489490A (en) | 2012-06-13 | 2012-06-13 | Passive containment vessel spraying device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790855A (en) * | 2014-02-21 | 2014-05-14 | 清华大学 | Nuclear main pump mechanical seal system with active and passive shutdown sealing |
| CN104021822A (en) * | 2014-05-13 | 2014-09-03 | 中国核电工程有限公司 | Passive containment spray and heat removal system |
| CN105788675A (en) * | 2016-05-06 | 2016-07-20 | 上海核工程研究设计院 | Long-time containment cooling system of nuclear power station |
| CN105825899A (en) * | 2016-05-06 | 2016-08-03 | 上海核工程研究设计院 | Containment cooling system of nuclear power station |
| CN106158056A (en) * | 2015-04-17 | 2016-11-23 | 国核（北京）科学技术研究院有限公司 | Cooling system and cooling means for nuclear power plant containment shell |
| CN104021822B (en) * | 2014-05-13 | 2016-11-30 | 中国核电工程有限公司 | A kind of passive containment spray and heat-extraction system |
| CN106251916A (en) * | 2016-08-31 | 2016-12-21 | 长江勘测规划设计研究有限责任公司 | A kind of underground nuclear power station cavern type double containment |
| CN107123448A (en) * | 2017-06-09 | 2017-09-01 | 四川行之智汇知识产权运营有限公司 | A kind of containment cooling system for improving cooling agent utilization rate |
| CN107256727A (en) * | 2017-06-09 | 2017-10-17 | 四川行之智汇知识产权运营有限公司 | A kind of nuclear reactor cooling system |
| CN107274938A (en) * | 2017-06-09 | 2017-10-20 | 四川行之智汇知识产权运营有限公司 | A kind of containment cooling device |
| CN111785398A (en) * | 2020-07-01 | 2020-10-16 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Passive residual heat removal system suitable for containment |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790855A (en) * | 2014-02-21 | 2014-05-14 | 清华大学 | Nuclear main pump mechanical seal system with active and passive shutdown sealing |
| CN104021822A (en) * | 2014-05-13 | 2014-09-03 | 中国核电工程有限公司 | Passive containment spray and heat removal system |
| CN104021822B (en) * | 2014-05-13 | 2016-11-30 | 中国核电工程有限公司 | A kind of passive containment spray and heat-extraction system |
| CN106158056A (en) * | 2015-04-17 | 2016-11-23 | 国核（北京）科学技术研究院有限公司 | Cooling system and cooling means for nuclear power plant containment shell |
| CN105788675A (en) * | 2016-05-06 | 2016-07-20 | 上海核工程研究设计院 | Long-time containment cooling system of nuclear power station |
| CN105825899A (en) * | 2016-05-06 | 2016-08-03 | 上海核工程研究设计院 | Containment cooling system of nuclear power station |
| CN106251916A (en) * | 2016-08-31 | 2016-12-21 | 长江勘测规划设计研究有限责任公司 | A kind of underground nuclear power station cavern type double containment |
| CN106251916B (en) * | 2016-08-31 | 2018-01-23 | 长江勘测规划设计研究有限责任公司 | A kind of underground nuclear power station cavern type double containment |
| CN107256727A (en) * | 2017-06-09 | 2017-10-17 | 四川行之智汇知识产权运营有限公司 | A kind of nuclear reactor cooling system |
| CN107274938A (en) * | 2017-06-09 | 2017-10-20 | 四川行之智汇知识产权运营有限公司 | A kind of containment cooling device |
| CN107123448A (en) * | 2017-06-09 | 2017-09-01 | 四川行之智汇知识产权运营有限公司 | A kind of containment cooling system for improving cooling agent utilization rate |
| CN107256727B (en) * | 2017-06-09 | 2019-04-09 | 安徽科创智慧知识产权服务有限公司 | A kind of nuclear reactor cooling system |
| CN107274938B (en) * | 2017-06-09 | 2019-05-21 | 安徽科创智慧知识产权服务有限公司 | A kind of containment cooling device |
| US10784003B2 (en) | 2017-06-09 | 2020-09-22 | Sichuan Xingzhi Zhihui Intellectual Property Operation Co., Ltd. | Containment cooling apparatus |
| US10784002B2 (en) | 2017-06-09 | 2020-09-22 | Sichuan Xingzhi Zhihui Intellectual Property Operation Co., Ltd. | Nuclear reactor cooling system |
| CN111785398A (en) * | 2020-07-01 | 2020-10-16 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Passive residual heat removal system suitable for containment |
| CN111785398B (en) * | 2020-07-01 | 2023-03-14 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Passive residual heat removal system suitable for containment |
| RU2788081C1 (en) * | 2021-12-29 | 2023-01-16 | Акционерное Общество "Атомэнергопроект" | System for pressure reduction in the hermetic shell, recharge of the reactor plant and the spent fuel pool |
| RU2788081C9 (en) * | 2021-12-29 | 2023-03-02 | Акционерное Общество "Атомэнергопроект" | System for pressure reduction in the hermetic shell, recharge of the reactor plant and the spent fuel pool |
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Application publication date: 20140101 |