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Nuclear-grade electric diaphragm valve

A diaphragm valve, electric technology, applied in the direction of diaphragm valve, diaphragm, valve details, etc., can solve problems such as complex overall structure, achieve compact overall structure, reduce cost, and avoid the effect of diaphragm compression that does not meet the standard or overcompression

Inactive Publication Date: 2018-06-12
SHANGHAI NO FIVE VALVE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent has a diaphragm pad structure, and the overall structure is relatively complicated.

Method used

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  • Nuclear-grade electric diaphragm valve
  • Nuclear-grade electric diaphragm valve
  • Nuclear-grade electric diaphragm valve

Examples

Experimental program
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Effect test

Embodiment

[0034] A nuclear grade electric diaphragm valve, such as Figure 1-Figure 3 As shown, it includes valve body 1, diaphragm 2, valve cover 5, valve stem 7, valve disc 8 and electric drive device 9, inlet and outlet are set on valve body 1, valve body 1 is connected with valve cover 5, and diaphragm 2 is set on At the connection between the valve body 1 and the valve cover 5, the diaphragm 2 is set on the outside of the valve disc 8, the valve disc 8 is connected to the lower end of the valve stem 7, the upper end of the valve stem 7 protrudes from the valve cover 5, and is connected to the electric drive device 9, the diaphragm The convolution part of 2 is provided with a support ring 3, and the support ring 3 is provided with a support claw 4, and the support claw 4 is fixed on the valve disc 8, and the support ring 3 is clamped between the support claw 4 and the diaphragm 2. During the opening and closing process of the diaphragm valve, the supporting ring 3 is always attached...

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Abstract

The invention relates to a nuclear-grade electric diaphragm valve. The nuclear-grade electric diaphragm valve comprises a valve body, a diaphragm, a valve deck, a valve rod, a valve clack and an electric driving device. A support ring is arranged at the convolution position of the diaphragm and provided with a support claw. The support claw is fixed to the valve clack. The support ring is clampedbetween the support claw and the diaphragm. On the switching-on and switching-off process of the diaphragm valve, the support ring is attached to the convolution position of the diaphragm all the timeso that the acting force, applied to the convolution position of the diaphragm, of a medium can be shared. Compared with the prior art, by means of the unique convolution support structure of the nuclear-grade electric diaphragm valve, the tension of the convolution position of the diaphragm is effectively reduced; the service life of the diaphragm valve is prolonged; and the thickness of the diaphragm is reduced. By means of the special connection mode of the valve body, the valve deck and the diaphragm, diaphragm seal ribs deform to achieve self-sealing through the acting force of the medium; high-pressure seal of the valve body and the valve deck is more reliable; and meanwhile, the requirement for machining precision of components is lowered.

Description

technical field [0001] The invention relates to a diaphragm valve, in particular to a nuclear-grade electric diaphragm valve. Background technique [0002] The diaphragm valve uses the diaphragm as the opening and closing part, and the valve stem is driven by the handwheel or electric drive device to move up and down along the axis, and the driving part is isolated from the medium. The main function is to connect or cut off the medium in the pipeline and control the medium. Flow opening and closing device. [0003] Since the diaphragm is a key part of the opening, closing and sealing of the diaphragm valve, its quality directly affects the sealing performance and service life of the valve. Therefore, the structure and material of the rubber diaphragm will play an important role in the sealing performance and service life of the diaphragm valve. critical use. [0004] Chinese patent CN101949460B discloses a diaphragm valve. The diaphragm pad is formed by stacking a pluralit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K7/12F16K31/04
CPCF16K7/12F16K31/04
Inventor 苏仕平陈锦崔东方刘涛卢隆兴苏智平苏素珍
Owner SHANGHAI NO FIVE VALVE FACTORY
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