CN103267423A - Heat exchanger in nuclear power plant containment vessel - Google Patents
Heat exchanger in nuclear power plant containment vessel Download PDFInfo
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- CN103267423A CN103267423A CN2013101735462A CN201310173546A CN103267423A CN 103267423 A CN103267423 A CN 103267423A CN 2013101735462 A CN2013101735462 A CN 2013101735462A CN 201310173546 A CN201310173546 A CN 201310173546A CN 103267423 A CN103267423 A CN 103267423A
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- heat exchanger
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- plant containment
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Abstract
The invention relates to a heat exchanger in a nuclear power plant containment vessel. The heat exchanger comprises a plurality of heat transfer tubes (1), a lower connecting box (2), an upper connecting box (3), an inlet tee joint (4), an outlet tee joint (5) and seal heads (6). The lower connecting box (2) and the upper connecting box (3) are arranged at two ends of the plurality of heat transfer tubes (1) and communicated with the plurality of heat transfer tubes (1), the inlet tee joint (4) is arranged on the middle portion of the lower connecting box (2) and communicated with the lower connecting box (2), the outlet tee joint (5) is arranged on the middle portion of the upper connecting box (3) and communicated with the upper connecting box (3), and the seal heads (6) are sealed at two ends of the upper connecting box (3) and the lower connecting box (2). By adopting the technical scheme, the heat exchanger in the nuclear power plant containment vessel does not need an energy and power system and is simple in structure, reliable in performance and good in cooling effect.
Description
Technical field
The invention belongs to the nuclear industry field, be specifically related to the heat exchanger in a kind of nuclear power plant containment shell.
Background technology
Containment is that nuclear power plant prevents the 3rd road barrier that radioactive substance leaks, and double-decker is adopted in main flow design at present.The double containment structure of one quasi-representative is that the interior metal containment is in conjunction with external prestress concrete shield mill construction, this technical scheme is applied among the third generation nuclear power system AP1000 of the U.S., when having an accident, in order to give the containment decrease temperature and pressure, the available overhead water tank that is arranged on sprays inner metal containment, continue evaporation by moisture film, can reach the purpose that makes the containment decrease temperature and pressure.
Another kind of double containment structure adopts the double layer concrete containment, cooled off timely and effectively in order to make when accident takes place, need adopt heat exchanger to be connected with outer tank (or external heat exchanger) in inside, rely on the mode of Natural Circulation to derive heat in the containment.The technological process of this type systematic is normally: inner heat exchanger (heat exchanger in the containment) is by the heating of high-temperature gas in the containment (the highest 150 ℃), working medium expanded by heating in the heat exchanger, density reduces, produce internal float lift, upwards flow into containment and cool off water tank (or the external heat exchanger that is submerged in the cooling water tank cools off) outward, after hot working fluid mixes with cold working medium and cools off, low temperature, the higher working medium of density along down-comer from the containment outer tank (or be submerged in the cooling water tank external heat exchanger) flowing downward enters inner heat exchanger, whole process relies on Natural Circulation to finish the heat export function.
Heat exchanger is the nucleus equipment of above-mentioned double layer concrete containment heat-exchange system, and its validity and function are the deciding factors of entire system performance.
Summary of the invention
In order to guarantee the derivation of heat in the above-mentioned double layer concrete structural safety shell, the invention provides the heat exchanger in a kind of nuclear power plant containment shell, this heat exchanger, is derived the heat in the nuclear power plant containment shell as the periodic duty medium by water and air, need not energy power system.The present invention is simple in structure, and is easy to operate, and good cooling effect.
Heat exchanger in the nuclear power plant containment shell provided by the invention, comprise many heat-transfer pipes, lower collecting box, upper header, import threeway, outlet threeway and end socket, described upper and lower header is located at the two ends of described many heat-transfer pipes respectively and communicates with it, described import threeway is located at the middle part of described lower collecting box and communicates with it, described outlet threeway is located at the middle part of described upper header and communicates with it, and described end socket is encapsulated in the two ends of described upper and lower header.Adopt this technical scheme, need not energy power system, simple in structure, dependable performance, and good heat dissipation effect.
Further, the diameter range of described upper header is DN200-DN450mm, and the diameter range of lower collecting box is DN150-DN400mm.
Further, the length of described upper and lower header is identical, respectively is 2.5-7m.
Further, the difference in height of described upper and lower header is 4-6m, and the spacing of upper and lower header center line is 0-2m.
Further, the quantity of described heat-transfer pipe is the 100-152 root, and the external diameter of described heat-transfer pipe is 32-45mm.
Further, described heat-transfer pipe adopts two row or multi-row to arrange that the spacing between the described every heat-transfer pipe is 47.5-76mm.
Further, described heat-transfer pipe is C shape, comprises horizontal part and vertical component effect, and the length of described horizontal part accounts for the 1/8-1/4 of described heat-transfer pipe total length.
Further, the arrangement mode between the described heat-transfer pipe adopts triangular form to arrange that the angle between described heat-transfer pipe and the vertical direction is the 0-30 degree.
Further, the entrance caliber that is connected with described import threeway is DN200-DN450mm, and the outlet caliber that is connected with described outlet threeway is DN150-DN400mm.
Further, described end socket is spherical.
Useful technique effect of the present invention is: adopt technical scheme of the present invention, this heat exchanger interior media adopts water, external agency adopts air, in when, in the nuclear power plant containment shell cut accident taking place when, high-temperature steam discharges, and the heat exchanger in the nuclear power plant containment shell passes through the steam condensation process of heat-transfer pipe outer wall the water in the heat transferred heat exchanger, continues to derive heat in the containment, reduce its pressure, thereby guarantee the safety of nuclear power plant containment shell.It is simple in structure, and dependable performance is easy to operate, good cooling effect, and need not energy power system.
Description of drawings
Fig. 1 is the front view of the heat exchanger in the nuclear power plant containment shell of the present invention;
Fig. 2 is the side view of the heat exchanger in the nuclear power plant containment shell of the present invention;
Fig. 3 is the rearview of the heat exchanger in the nuclear power plant containment shell of the present invention;
Fig. 4 is the structural representation of the heat exchanger in the nuclear power plant containment shell of the present invention;
Fig. 5 is the structural representation that the heat transfering tube of heat exchanger triangle in the nuclear power plant containment shell of the present invention distributes.
Among the figure:
1-heat-transfer pipe 2-lower collecting box 3-upper header 4-import threeway 5-exports threeway
The 6-end socket
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Shown in Fig. 1-4, the heat exchanger in the nuclear power plant containment shell provided by the invention comprises many heat-transfer pipes 1, lower collecting box 2, upper header 3, import threeway 4, outlet threeway 5 and dome head 6.Upper header 3 and lower collecting box 2 are located at the two ends of many heat-transfer pipes 1 respectively and communicate with it, and import threeway 4 is located at the middle part of lower collecting box 2 and communicates with it, and outlet threeway 5 is located at the middle part of upper header 3 and communicates with it, and dome head 6 is encapsulated in the two ends of upper and lower header.Adopt this technical scheme, it is simple in structure, and is easy to operate, and dependable performance need not the energy, and can reach desirable cooling-down effect.
Wherein, the diameter range of upper header is DN200-DN450, and the diameter range of lower collecting box is DN150-DN400; The length of upper and lower header is identical, respectively is 2.5-7m; The difference in height of upper and lower header is 4-6m; The spacing of last lower collecting box center line is 0-2m.
As shown in Figure 2, the material of heat-transfer pipe adopts stainless steel, and good heat conductivity, quantity are the 100-152 root, and the heat-transfer pipe diameter adopts 32-45mm.Heat-transfer pipe is C shape, comprises horizontal part and vertical component effect, and the length of horizontal part accounts for the 1/8-1/4 of heat-transfer pipe total length; Spacing between each heat-transfer pipe is 47.5mm-76mm; The angle of the angle between heat-transfer pipe and the vertical direction is the 0-30 degree.
As shown in Figure 5, heat-transfer pipe adopts two row or multi-row to arrange, is staggered between two adjacent row's heat-transfer pipes, observes from the cross-sectional direction of heat-transfer pipe, and the arrangement mode between the heat-transfer pipe adopts triangular arrangement.
The entrance caliber that is connected with the import threeway is DN200-DN450mm, and the outlet caliber that is connected with the outlet threeway is DN150-DN400mm.
The following describes the course of work of the heat exchanger in the nuclear power plant containment shell:
The heat exchanger interior media adopts water, and external agency adopts air.When in the containment cut accident taking place, high-temperature steam discharges, and heat exchanger passes through the condensation of heat-transfer pipe the water in the heat transferred heat exchanger, thereby guarantees the safety of containment.Heat exchanger adopts the pattern of centre type one-in-and-one-out, and interior media is entered the structure that flows out from upper header by lower collecting box.The inner heat exchanger that adopts of containment, the outside water tank that adopts; Or the inner heat exchanger that adopts of containment, the outside heat exchanger that adopts.
Heat exchanger in the nuclear power plant containment shell of the present invention is not limited to the above-mentioned specific embodiment, and those skilled in the art's technical scheme according to the present invention draws other embodiment, belongs to technological innovation scope of the present invention equally.
Claims (10)
1. the heat exchanger in the nuclear power plant containment shell, comprise many heat-transfer pipes (1), it is characterized in that: also comprise lower collecting box (2), upper header (3), import threeway (4), outlet threeway (5) and end socket (6), described upper and lower header is located at the two ends of described many heat-transfer pipes (1) respectively and communicates with it, described import threeway (4) is located at the middle part of described lower collecting box (2) and communicates with it, described outlet threeway (5) is located at the middle part of described upper header (3) and communicates with it, and described end socket (6) is encapsulated in the two ends of described upper and lower header (3,2).
2. the heat exchanger in the nuclear power plant containment shell as claimed in claim 1, it is characterized in that: the diameter range of described upper header (3) is DN200-DN450mm, the diameter range of lower collecting box (2) is DN150-DN400mm.
3. the heat exchanger in the nuclear power plant containment shell as claimed in claim 2, it is characterized in that: the length of described upper and lower header (3,2) is identical, respectively is 2.5-7m.
4. the heat exchanger in the nuclear power plant containment shell as claimed in claim 3, it is characterized in that: the difference in height of described upper and lower header (3,2) is 4-6m, the spacing of upper and lower header (3,2) center line is 0-2m.
5. the heat exchanger in the nuclear power plant containment shell as claimed in claim 4, it is characterized in that: the quantity of described heat-transfer pipe (1) is the 100-152 root, the external diameter of described heat-transfer pipe (1) is 32-45mm.
6. the heat exchanger in the nuclear power plant containment shell as claimed in claim 5, it is characterized in that: described heat-transfer pipe (1) adopts two row or multi-row to arrange that the spacing between the described every heat-transfer pipe (1) is 47.5-76mm.
7. the heat exchanger in the nuclear power plant containment shell as claimed in claim 6, it is characterized in that: described heat-transfer pipe (1) is C shape, comprises horizontal part and vertical component effect, and the length of described horizontal part accounts for the 1/8-1/4 of described heat-transfer pipe (1) total length.
8. as the heat exchanger in each described nuclear power plant containment shell of claim 1-7, it is characterized in that: be staggered between the described heat-transfer pipe of adjacent two rows, the angle between described heat-transfer pipe (1) and the vertical direction is the 0-30 degree.
9. as the heat exchanger in each described nuclear power plant containment shell of claim 1-7, it is characterized in that: the entrance caliber that is connected with described import threeway is DN200-DN450mm, and the outlet caliber that is connected with described outlet threeway is DN150-DN400mm.
10. the heat exchanger in the nuclear power plant containment shell as claimed in claim 9, it is characterized in that: described end socket (6) is for spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013101735462A CN103267423A (en) | 2013-05-10 | 2013-05-10 | Heat exchanger in nuclear power plant containment vessel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101735462A CN103267423A (en) | 2013-05-10 | 2013-05-10 | Heat exchanger in nuclear power plant containment vessel |
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| CN103267423A true CN103267423A (en) | 2013-08-28 |
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| CN2013101735462A Pending CN103267423A (en) | 2013-05-10 | 2013-05-10 | Heat exchanger in nuclear power plant containment vessel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170105004A (en) * | 2014-12-04 | 2017-09-18 | 조인트-스톡 컴퍼니 사이언티픽 리서치 앤드 디자인 인스티튜트 포 에너지 테크놀로지스 아톰프로엑트 (제이에스씨 아톰프로엑트) | System for passively removing heat from inside a containment shell |
| CN108154941A (en) * | 2016-12-05 | 2018-06-12 | 国家电投集团科学技术研究院有限公司 | The external air cooler of containment vessel |
| CN108630328A (en) * | 2017-03-24 | 2018-10-09 | 国家电投集团科学技术研究院有限公司 | Passive containment built-in heat exchanger system |
| CN108630329A (en) * | 2017-03-24 | 2018-10-09 | 国家电投集团科学技术研究院有限公司 | Containment built-in heat exchanger |
| CN108630327A (en) * | 2017-03-24 | 2018-10-09 | 国家电投集团科学技术研究院有限公司 | Passive containment heat exchanger system |
| EP3869134A4 (en) * | 2018-10-17 | 2022-07-20 | China Nuclear Power Engineering Co., Ltd. | Passive condenser for nuclear power plant |
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| JP4660270B2 (en) * | 2005-05-17 | 2011-03-30 | 株式会社東芝 | Heat exchanger, manufacturing method thereof, and reactor containment system |
| CN102737738A (en) * | 2012-06-25 | 2012-10-17 | 中国核电工程有限公司 | Passive direct evaporation type cooling system for double-layer concrete containment |
| CN102867548A (en) * | 2012-09-27 | 2013-01-09 | 中国核电工程有限公司 | Active and passive combined secondary side reactor core heat derivation device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4660270B2 (en) * | 2005-05-17 | 2011-03-30 | 株式会社東芝 | Heat exchanger, manufacturing method thereof, and reactor containment system |
| CN102737738A (en) * | 2012-06-25 | 2012-10-17 | 中国核电工程有限公司 | Passive direct evaporation type cooling system for double-layer concrete containment |
| CN102867548A (en) * | 2012-09-27 | 2013-01-09 | 中国核电工程有限公司 | Active and passive combined secondary side reactor core heat derivation device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170105004A (en) * | 2014-12-04 | 2017-09-18 | 조인트-스톡 컴퍼니 사이언티픽 리서치 앤드 디자인 인스티튜트 포 에너지 테크놀로지스 아톰프로엑트 (제이에스씨 아톰프로엑트) | System for passively removing heat from inside a containment shell |
| CN107210071A (en) * | 2014-12-04 | 2017-09-26 | 原子能技术科学研究设计院股份公司 | Passive heat removal system inside containment |
| EP3229239A4 (en) * | 2014-12-04 | 2018-05-30 | Joint-stock Company Scientific Research and Design Institute for Energy Technologies Atomproekt (JSC Atomproekt ) | System for passively removing heat from inside a containment shell |
| CN107210071B (en) * | 2014-12-04 | 2019-06-21 | 原子能技术科学研究设计院股份公司 | Passive heat removal system inside containment |
| US10720250B2 (en) * | 2014-12-04 | 2020-07-21 | Joint-Stock Company Scientific Research And Design Institute For Energy Technologies Atomproekt | Containment internal passive heat removal system |
| KR102198440B1 (en) | 2014-12-04 | 2021-01-07 | 조인트-스톡 컴퍼니 사이언티픽 리서치 앤드 디자인 인스티튜트 포 에너지 테크놀로지스 아톰프로엑트 (제이에스씨 아톰프로엑트) | Containment internal passive heat removal system |
| CN108154941A (en) * | 2016-12-05 | 2018-06-12 | 国家电投集团科学技术研究院有限公司 | The external air cooler of containment vessel |
| CN108630328A (en) * | 2017-03-24 | 2018-10-09 | 国家电投集团科学技术研究院有限公司 | Passive containment built-in heat exchanger system |
| CN108630329A (en) * | 2017-03-24 | 2018-10-09 | 国家电投集团科学技术研究院有限公司 | Containment built-in heat exchanger |
| CN108630327A (en) * | 2017-03-24 | 2018-10-09 | 国家电投集团科学技术研究院有限公司 | Passive containment heat exchanger system |
| CN108630327B (en) * | 2017-03-24 | 2023-08-25 | 国核示范电站有限责任公司 | Passive containment heat exchanger system |
| EP3869134A4 (en) * | 2018-10-17 | 2022-07-20 | China Nuclear Power Engineering Co., Ltd. | Passive condenser for nuclear power plant |
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Application publication date: 20130828 |