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Passive permanent magnetic valve for emergent tide storage for water intake in nuclear industry

A nuclear industry, passive technology, applied in the direction of valve details, valve device, valve shell structure, etc., can solve the problem that the valve cannot be opened, and achieve the effect of low production cost, simple manufacture and use

Active Publication Date: 2016-06-22
SHENYANG HUADA R & D CENT OF POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under harsh conditions, such as earthquakes, electricity and labor cannot open the valve and inject a large amount of cooling water into the required parts of the nuclear plant, such as the Fukushima earthquake in Japan in 2011

Method used

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  • Passive permanent magnetic valve for emergent tide storage for water intake in nuclear industry
  • Passive permanent magnetic valve for emergent tide storage for water intake in nuclear industry
  • Passive permanent magnetic valve for emergent tide storage for water intake in nuclear industry

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Effect test

Embodiment 1

[0057] The valve conduit is a 316L stainless steel tube with an inner diameter of 210mm and an outer diameter of 220mm. The pole surface of the permanent magnet 40N: DT4 pure iron yoke=1:5, the height of the yoke is 20mm, the arc length of the magnet is 71.31mm, and the magnetic resistance is 6010 aluminum alloy.

[0058] The switching stroke of the permanent magnet valve is 90 degrees, and four NdFeB permanent magnets are respectively installed in the rotatable disc magnetic system layer and the fixed disc magnetic system layer.

[0059] Installation sequence: first fix the magnetic resistance part / air gap disc of the disc magnetic layer (disk) on the valve guide with the sealing surface (disk), and then press each arc-shaped permanent magnet according to the inner and outer arc ends (magnet Extreme) N, S, N, S magnetic poles are alternately clamped with inner and outer yokes, embedded in the air gap disc, that is, the fixed disc magnetic layer (disk) is installed;

[0060] T...

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Abstract

The invention relates to a passive permanent magnetic valve for emergent tide storage for water intake in the nuclear industry. The passive permanent magnetic valve comprises a flange plate (1), a valve guide pipe (2), permanent magnets (3), air gaps (4), magnet yokes (5), a bearing (6), a rotary handle (7), a floating ball rope (8), a positioning pin (9), a magnetic valve deck (10), a sealing ring (10a), a floating ball (11), a magnetic valve deck cover (12) and a valve shell. According to the permanent magnetic valve disclosed by the invention, magnetic path and structure design and verification are performed with a finite element method according to working conditions and practical application requirements. A magnetic path is formed by the permanent magnets, the magnet yokes and magnetic resistance components to control the operation of the valve. No power or manual operation is needed, and the valve is opened and closed according to requirements under special design. The passive permanent magnetic valve is simple in structure, low in manufacture cost, outward-leakage-free, good in sealing performance, high in reliability and good in corrosion-resistance, and has a passive property. The passive permanent magnetic valve is especially applicable to passive automatic water intake in a nuclear power plant and gas and liquid fluid transportation under various emergency conditions.

Description

technical field [0001] The invention relates to a passive permanent magnet valve for emergency tidal water intake in the nuclear industry, in particular to a passive permanent magnet valve suitable for passive automatic water intake in nuclear power plants and for transporting gas and liquid fluids in various emergency situations. Background technique [0002] Large-scale industrial facilities such as nuclear power plants generally have emergency water intake cooling facilities, and emergency water intake cooling facilities generally use electricity and labor to control emergency water supply when needed. However, under harsh conditions, such as earthquakes, electricity and labor cannot open the valve and inject a large amount of cooling water into the required parts of the nuclear plant, such as the 2011 Fukushima earthquake in Japan. [0003] Therefore, how to solve the problem of opening the valve in emergency situations of power loss and manual completion, injecting the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/18F16K31/08F16K27/00
CPCF16K27/00F16K31/08F16K31/18
Inventor 陈尔凡付耕瑜
Owner SHENYANG HUADA R & D CENT OF POLYMER MATERIALS CO LTD
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