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Low-noise cutting ball valve

A cut-off ball valve, low-noise technology, applied to the cock, valve details, valve device and other directions including the cut-off device, can solve the health hazards of operators, large valve pressure difference, wear of valve body and ball, etc., to improve work environment, increasing friction loss, and eliminating cavitation effects

Inactive Publication Date: 2015-09-16
CHANGZHENG ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the ball valve has the characteristics of large flow capacity and rapid switching, which is easy to cause problems of high noise and strong vibration during the opening and closing process of the ball valve, especially under the working condition of high pressure difference
This is because during the opening and closing process of the ball valve, the pressure difference on both sides of the valve is very large, and the fluid velocity is very high. Body and sphere wear and damage
At the same time, the high noise and strong vibration during the opening and closing process of the cut-off ball valve also caused the energy loss of the valve, which brought great harm to the health of the operators.

Method used

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Embodiment Construction

[0028] Attached below Figure 1~4 The invention is described in further detail.

[0029] Such as Figure 1~4 As shown, the present invention proposes a low-noise cut-off ball valve, the structure of which includes a valve body composed of a first valve body part 1 and a second valve body part 2. In the valve body, a fixed shaft 7 supports a ball structure 4, and the ball body The structure 4 forms a spherical seal with the two valve seats 5, and the spring force provided by the spring 6 presses the valve seat 5 to the ball structure 4 to realize the sealing between the ball 4-1 and the valve seat 5, and the valve stem 3 drives the ball structure 4 to rotate to complete the switching action . By adopting the new spherical structure 4, the flow channel grille 4-2 is arranged in the spherical flow channel 4-4, so that when the cut-off ball valve is fully open, the resistance to the fluid is small, and the normal circulation of the fluid will not be affected. During the working...

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Abstract

The invention discloses a low-noise cutting ball valve. The low-noise cutting ball valve comprises a valve body and a ball body structure, wherein the ball body structure comprises a ball body, a runner grid plate and a ball body runner; the runner grid plate is arranged in the ball body runner and is X-shaped. Due to the fact that the runner grid plate is arranged in the ball body runner, the friction loss of a fluid is increased by a gradual pressure reducing and multi-grade throttling method, air pockets are reduced or even eliminated, the speed of the fluid flowing through the valve is greatly reduced, and the problem of high noise and strong vibration is solved.

Description

[0001] Technology area [0002] The invention relates to a pipeline control valve, in particular to a low-noise cut-off ball valve. Background technique [0003] Ball valves are widely used in coal chemical, petrochemical, iron and steel, metallurgy, air separation and other industries due to their characteristics of small flow resistance, fast switching, good sealing performance, long service life, and convenient air control and electric control. [0004] However, the ball valve has the characteristics of large flow capacity and rapid switching, which may easily cause problems of high noise and strong vibration during the opening and closing process of the ball valve, especially under the working condition of high pressure difference. This is because during the opening and closing process of the ball valve, the pressure difference on both sides of the valve is very large, and the fluid velocity is very high. Body and sphere wear and damage. At the same time, the high noise ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/10F16K47/02
CPCF16K5/0605F16K5/10F16K47/02
Inventor 赵海燕李伯文王松秦黎刘成钢
Owner CHANGZHENG ENG
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