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Passive containment heat exchanger system

A passive containment and heat exchanger technology, applied in the field of nuclear reactors, can solve the problems of large deformation, poor anti-seismic performance, and low heat exchange efficiency of air coolers and built-in heat exchangers, and achieve enhanced installation firmness and improved anti-seismic performance , Increase the effect of heat transfer capacity

Active Publication Date: 2018-10-09
国核示范电站有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since a group of air coolers is composed of two air cooler units, and the finned tubes adopt a structure of 4 rows of tubes, this type of air cooler requires more finned tubes, the water side flow rate is small, the water side thermal resistance is large, and the heat transfer Low efficiency, not suitable for reactor containment heat removal
[0004] In addition, in related technologies, the installation of the external air cooler and the built-in heat exchanger on the containment is not firm enough, and the shock resistance performance is poor. Under the action of external force, the air cooler and the built-in heat exchanger deform greatly
And the installation structure used to place the air cooler affects the cooling and heat exchange of the containment air duct of the nuclear power plant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] The built-in upper header 10 is formed as a straight pipe extending in the horizontal direction, and the built-in lower header 20 is also formed as a straight pipe extending in the horizontal direction. The heat exchanger outlet 11 is located on the middle upper side of the built-in upper header 10, that is, the built-in heat exchanger inlet 21 and the built-in heat exchanger outlet 11 are coaxially arranged and the openings are facing oppositely, that is, the built-in heat exchanger inlet 21 is at the bottom of the built-in lower header 20. The lower side opening is downward, the outlet 11 of the built-in heat exchanger is opened upward on the upper side of the built-in upper header 10, and the exhaust pipes 30 are respectively arranged on both sides of the built-in upper header 10 and the built-in lower The upper header 10 and the built-in lower header 20 are arranged symmetrically on both sides in the length direction.

[0117] The fluid can enter the built-in lower ...

Embodiment 2

[0119]The built-in upper header 10 is formed as a straight pipe extending in the horizontal direction. The built-in lower header 20 is mainly composed of a first straight pipe section 22 and two second straight pipe sections 23. The first straight pipe section 22 is located between the two second straight pipe sections. 23, both ends of the first straight pipe section 22 are respectively connected with two second straight pipe sections 23, the two second straight pipe sections 23 are spaced apart, and the built-in heat exchanger inlet 21 is located in the first straight pipe section of the built-in lower header 20 22, the outlet 11 of the built-in heat exchanger is located on the upper side of the middle of the built-in upper header 10, that is, the inlet 21 of the built-in heat exchanger and the outlet 11 of the built-in heat exchanger are arranged coaxially and have the same opening orientation, that is, the outlet of the built-in heat exchanger The inlet 21 opens upward on t...

Embodiment 3

[0122] The built-in upper header 10 and the built-in lower header 20 are respectively formed as circular tubes of the same size. The built-in heat exchanger 100 includes a built-in heat exchanger inlet 21 and a built-in heat exchanger outlet 11. The built-in heat exchanger inlet 21 is located in the built-in heat exchanger. On the outside of the lower header 20, the built-in heat exchanger outlet 11 is located outside the built-in upper header 10, and the built-in heat exchanger inlet 21 and the built-in heat exchanger outlet 11 are at the same position on the built-in lower header 20 and the built-in upper header 10 , the upper end of the row pipe 30 is bent inwardly and connected to the built-in upper header 10, the lower end of the row pipe 30 is bent inwardly and connected to the built-in lower header 20, and the row pipe 30 is along the built-in upper header 10 and the built-in lower header The circumferential distribution of 20 is arranged in a cylindrical shape.

[0123...

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Abstract

The invention discloses a passive containment heat exchanger system, comprising a concrete containment; a steel containment, a built-in support member, a built-in heat exchanger, an external support frame, an external air cooler and a penetration member, wherein the steel containment is arranged in the concrete containment; the built-in support member is arranged on the inner wall of the steel containment; the built-in heat exchanger is arranged on a mounting part of the built-in support member; the external air cooler is arranged in an installation cavity of the external support frame; the penetration piece member is arranged on the built-in support member and is in communication with an inlet and an outlet of the built-in heat exchanger, and the two ends of the penetration member extendout of the steel containment and the concrete containment to communicate with an inlet and an outlet of the external air cooler, respectively. The passive containment heat exchanger system disclosed by the embodiment of the invention has a compact structure and saves space, and has the advantages that the seismic performance is improved, the system integrity is ensured and the heat exchange capability is enhanced.

Description

technical field [0001] The invention relates to the technical field of nuclear reactors, in particular to a passive containment heat exchanger system. Background technique [0002] When an accident occurs in a nuclear reactor, the heat in the containment needs to be exported. In related technologies, the method of spraying cooling water to the containment is usually used to export the heat. However, this spray cooling needs to be provided with a large cooling water tank, and the water volume is limited, which limits the cooling time and cannot really achieve unlimited cooling. For this reason, in the related art, it is proposed to install air coolers inside and outside the containment to form a heat exchange system. The air coolers outside the containment are usually called external air coolers, and the heat exchangers inside the containment are usually called built-in air coolers. Heat Exchanger. In related technologies, the external air cooler of the reactor containment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C15/18
CPCG21C15/18Y02E30/30
Inventor 沈峰张圣君孟现珂何丹丹彭翊高彬
Owner 国核示范电站有限责任公司
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