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Valve with double sealing pairs

A double seal and valve technology, applied in the field of valve body seal ring, can solve the problems of mechanical strength, service life and sealing performance, and achieve the effect of high mechanical strength, good sealing performance and zero leakage

Inactive Publication Date: 2005-07-27
TIELING SPECIAL VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of ball valve, hemispherical valve or butterfly valve with only metal sealing pair or only elastic sealing pair cannot take into account mechanical strength, service life and sealing performance.

Method used

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  • Valve with double sealing pairs
  • Valve with double sealing pairs
  • Valve with double sealing pairs

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] figure 1 , figure 2 Among them, the valve with double sealing pair is a butterfly valve. The butterfly valve has a valve body 1, a valve core 2 in the valve body, and a metal sealing pair between the valve body and the valve core. The sealing ring 3 and the valve body metal sealing ring 4 inlaid on the inner circumference of the valve body are combined. There is also an elastic sealing pair between the valve body and the valve core. The elastic sealing pair is composed of the valve body elastic sealing ring 5 and the The metal sealing ring of the above-mentioned valve core is composed of cooperation, and the elastic sealing ring of the valve body can be made of rubber, plastic or a combination of rubber and plastic.

[0017] The metal seal ring of the valve body in the metal seal pair of the above-mentioned valve with double seal pairs is positioned and connected on the circumference of the valve body. When the valve is closed, the sealing ratio between the valve body...

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PUM

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Abstract

The valve with double sealing couple is ball valve or butterfly valve, which consists of valve body and valve core inside valve body. There is a metal sealing couple consisting of the valve core metal seal ring set in external circle of valve core and the valve body metal seal ring set in internal circle of valve body in between valve body and valve core; there is a flexible sealing couple consisting of the valve body flexible seal ring set in internal circle of valve body and above valve core metal seal ring in between valve body and valve core. In this invention, the sealing couples in between valve body and valve core include the metal sealing couple and the flexible sealing couple. The metal sealing couple has strong mechanical strength, long life, and can be used as the main sealing tool, that is working sealing; the flexible sealing couple has good sealing performance, after close the valve, make sure no leak, can be used as turnaround sealing tooo. This invention is applicable for the inlet valve of water turbine in the hydroelectric power station.

Description

technical field [0001] The invention relates to a ball valve, a hemispherical valve or a butterfly valve, in particular to a valve body sealing ring of a ball valve, a hemispherical valve or a butterfly valve. Background technique [0002] Ball valves, hemispherical valves and butterfly valves are used in the delivery pipeline of fluid, especially water. Sealing pair, the sealing pair is composed of a valve core sealing ring inlaid on the outer circumference of the valve core and a valve body sealing ring inlaid on the inner circumference of the valve body. On the sealing ring of the spool, a sealing specific pressure is generated to realize the sealing between the spool and the valve body. The sealing pair has a metal sealing pair and an elastic sealing pair. The valve core seal ring and valve body seal ring of the metal seal pair are made of metal; the valve core seal ring of the elastic seal pair is made of metal, and the valve body seal ring is made of elastic material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/226F16K5/06
Inventor 陈晓刚
Owner TIELING SPECIAL VALVE
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