Liquid nitrogen ice jam device for nuclear power plants and ice jam control method thereof

A control method and technology for nuclear power plants, applied in power plant safety devices, nuclear power generation, cooling devices, etc., can solve the problems of fast gasification, short residence time, and fast liquid nitrogen consumption.

Pending Publication Date: 2019-03-26
JIANGSU NUCLEAR POWER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a nuclear power plant liquid nitrogen ice plug device and its ice plug control method in view of the deficiencies of the above-mentioned prior art, which is used to solve the problem of short residence time of liquid nitrogen on the pipe wall of the liquid nitrogen ice plug fixture in the prior art, and The technical problem of rapid chemical transformation, rapid loss of liquid nitrogen, and easy release of liquid nitrogen to the environment causes nitrogen poisoning

Method used

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  • Liquid nitrogen ice jam device for nuclear power plants and ice jam control method thereof
  • Liquid nitrogen ice jam device for nuclear power plants and ice jam control method thereof
  • Liquid nitrogen ice jam device for nuclear power plants and ice jam control method thereof

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Embodiment Construction

[0024] The technology of the present invention is further described below:

[0025] Such as figure 1 with 5 As shown, a liquid nitrogen ice plug device for a nuclear power plant includes: clamp 8, several clamp inlets 1, several clamp outlets 2, clamp outer wall 3, end sealing plate 4, temperature sensor well 5, clamp inner wall 6 and temperature sensor 7; The clamp outer wall 3 of the clamp 8 is provided with a clamp inlet 1 and a clamp outlet 2; a temperature sensor well 5 is provided on the clamp inner wall 6, and a temperature sensor 7 is arranged in the temperature sensor well 5; the inner wall 6 and the clamp outer wall 3 The two ends are welded and connected by the end sealing plate 4, and the inside of the clamp 8 is a hollow structure.

[0026] The overall exterior of the clamp 8 is a C-shaped structure; the number of clamps 8 is two, and the two clamps 8 are placed symmetrically as mirror images.

[0027] The upper and lower ends of the fixture outer wall 3 of eac...

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Abstract

The invention belongs to the technical field of pipeline freezing of nuclear power plants and specifically relates to a liquid nitrogen ice jam device for nuclear power plants and an ice jam control method thereof. The liquid nitrogen ice jam device comprises a clamp, a plurality of clamp inlets, a plurality of clamp outlets, an external clamp wall, end sealing plates, a temperature sensor well, an internal clamp wall and a temperature sensor; the external clamp wall of the clamp is equipped with the clamp inlets and the clamp outlets; the temperature sensor well is formed on the internal clamp wall; the temperature sensor is arranged in the temperature sensor well; the two ends of the internal clamp wall and the external clamp wall are welded with each other through the end sealing plates; a hollow structure is formed in the clamp.

Description

technical field [0001] The invention belongs to the technical field of pipeline freezing in nuclear power plants, and in particular relates to a liquid nitrogen ice plug device in a nuclear power plant and an ice plug control method thereof. Background technique [0002] The particularity of the unit operation of nuclear power plants, the safe and stable operation of the unit is very important for nuclear power plants, but equipment failures may occur during unit operation, and unit shutdown and maintenance will cause unnecessary economic costs, or the processing equipment needs to empty the system medium, but Certain systems in nuclear power plants (such as the boric acid solution in the primary circuit) have certain radioactivity, and the system medium cannot be emptied. In order to meet the maintenance and repair needs of these equipment, an isolation method is sought to compensate for the lack of operational isolation. The ice plug is used The refrigerant freezes the pip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C15/18G21C15/22G21D3/04
CPCG21C15/18G21C15/22G21D3/04Y02E30/30Y02E30/00
Inventor 朱友学芮守龙黄磊孙旭孙传福胡银龙郭光亮顾柏晓崔冀涂冉
Owner JIANGSU NUCLEAR POWER CORP
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