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Containment built-in efficient heat exchanger adopting cutting type air suction system

A heat exchanger and containment technology, which is applied in the field of high-efficiency heat exchangers built into the containment to achieve the effects of increasing the mass share, rapidly reducing temperature and pressure, and enhancing convective heat transfer in the tube

Pending Publication Date: 2021-06-25
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] During the development of the accident, the PCCS will gradually dissipate the heat in the containment during the long-term operation. During the operation of the PCCS, a large amount of steam will condense on the surface of the heat exchanger inside the containment At the same time, a large amount of non-condensable gas will accumulate on the outer surface of the heat exchanger inside the containment, so that a gas film will be formed on the outer surface of each heat exchange tube to inhibit steam condensation and heat transfer. The published patents have not formed an effective solution to this problem

Method used

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  • Containment built-in efficient heat exchanger adopting cutting type air suction system
  • Containment built-in efficient heat exchanger adopting cutting type air suction system
  • Containment built-in efficient heat exchanger adopting cutting type air suction system

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] to combine figure 1 -5. The present invention provides a high-efficiency heat exchanger built into the containment using a slash-type suction system. Mainly include containment built-in heat exchanger 1, heat exchanger inlet header 2, heat exchanger outlet header 3, upper pipe section 4, lower pipe section 5, water delivery structure 6, jet flow structure 7, suction structure 8, suction Air pipe 9 , exhaust pipe 10 , drain pipe 11 , containment gas space pipe 12 , containment inner wall surface 13 , and support column 14 .

[0029] The invention discloses a high-efficiency heat exchanger built in a containment using a slash-type air intake system, including a heat exchanger inlet header, a heat exchange tube, a heat exchanger outlet header, and a slash-type air intake system. The tube bundles of the heat exchanger inside the ...

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Abstract

The invention provides a containment built-in efficient heat exchanger adopting a cutting type air suction system. The cutting type air suction system comprises a water conveying structure, a jet flow structure, an air suction structure, a drainage pipe and an exhaust pipe. The cutting type air suction system can convert water flow potential energy of steam condensation into jet flow kinetic energy to drive the air suction structure to rotate to generate suction force, so that a non-condensable gas film near the heat exchange pipe is sucked away, and steam can be better condensed on the outer surface of the heat exchange pipe for heat exchange. The heat in the containment can be efficiently taken away when a crevasse accident occurs in the containment, a non-condensable gas film can be effectively thinned by utilizing the cutting type air suction system, the contact between steam and a pipe bundle is enhanced, efficient heat transfer is realized, efficient temperature and pressure reduction in the containment can be ensured under the accident condition, and the safety of the containment is ensured. The safety of the containment is enhanced; and a feasible scheme is provided for reducing the construction cost of the containment.

Description

technical field [0001] The invention relates to high-efficiency heat exchange equipment for a passive containment cooling system, and specifically refers to a high-efficiency heat exchanger built in a containment that adopts a slash-type suction system. Background technique [0002] The 21st century is an important stage of human development, and it is also a stage of shortage of conventional energy. Because of its clean and efficient characteristics, nuclear energy has attracted people's attention since its discovery. With the continuous development and maturity of nuclear energy technology, nuclear energy has gradually become a new major energy source. Its high energy density, clean and efficient characteristics make it more and more widely used. [0003] While nuclear energy brings clean and efficient energy to mankind, it also brings many risks. With the development of nuclear power technology, more and more attention has been paid to the safety of nuclear power plants....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C15/18G21C15/14G21C15/02G21C15/253G21C15/26
CPCG21C15/18G21C15/14G21C15/02G21C15/253G21C15/26Y02E30/30
Inventor 边浩志周书航曹博洋丁铭曹夏昕邢继孙中宁孟兆明王辉张楠
Owner HARBIN ENG UNIV
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