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Pull and insertion design technology for high-pressure flat valve

A design technology, flat valve technology, applied in sliding valves, valve details, valve devices, etc., can solve the problems of troublesome maintenance, labor-intensive, time-consuming, etc., and achieve the effect of convenient and fast maintenance and long maintenance-free period.

Inactive Publication Date: 2019-06-18
郑健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This maintenance method is quite troublesome, labor-intensive and time-consuming.

Method used

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  • Pull and insertion design technology for high-pressure flat valve
  • Pull and insertion design technology for high-pressure flat valve
  • Pull and insertion design technology for high-pressure flat valve

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Experimental program
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Embodiment Construction

[0010] as attached figure 1 , 2 As shown, two wave springs 4 are arranged on the contact surface between the valve body 7 and the valve seat 8 and the orientation of the two wave springs 4 is that the openings face each other. as attached figure 1 , 3 As shown, the lower ends of the planes on both sides of the gate 6 are designed as symmetrical slopes.

[0011] When the present invention is working, turning the hand wheel 1 clockwise drives the valve stem 3 to make the valve stem nut 2 move downward in a straight line along the axis of the valve stem 3, and the valve stem nut 2 presses the gate plate 6 to move downward, so that the valve stem 6 moves downward. The solid planes on both sides are engaged with the sealing surfaces of the left and right valve seats 8 under the lateral elastic force of the left and right wave springs 4 to achieve closure. Since the left and right valve seats 8 and the valve body 7 are in a gap floating fit and are provided with two lip-shaped s...

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Abstract

The invention relates to a pull and insertion design technology for a high-pressure flat valve, in particular to a pull and insertion structure of a valve plate in the high-pressure flat valve and belongs to the field of petroleum equipment machine manufacturing. By the adoption of the pull and insertion structure of the valve plate in the high-pressure flat valve, maintenance is quite convenientafter the valve plate in the high-pressure flat valve is worn. The pull and insertion structure of the valve plate in the high-pressure flat valve is composed of a valve body, a valve seat, a valve rod, a valve rod nut, a shutter, a wave spring, lip seal rings, a guide plate, a hand wheel and the like. The pull and insertion structure of the valve plate in the high-pressure flat valve is characterized in that the lower ends of the flat faces on the two sides of the shutter are provided with slope faces which are symmetrical slope faces, the shortest distance between the two symmetrical slope faces is smaller than the distance between the two parallel flat faces of the valve seat in the natural state, the wavy spring is arranged between the valve seat and the valve body, and two opposite circular-ring-shaped lip seal rings are arranged between the valve seat and the valve body. The pull and insertion structure of the valve plate in the high-pressure flat valve has the advantages of being long in maintenance period and convenient and rapid to maintain, saving labor and time and the like.

Description

technical field [0001] The invention relates to a high-pressure flat valve pull-out design technology, in particular to a pull-out structure for the middle gate of a high-pressure flat valve, which is particularly convenient for maintenance after the wear of the high-pressure flat valve, and belongs to petroleum equipment machinery manufacturing field. Background technique [0002] In the process of drilling and oil production, the plate valve is a common and necessary control valve in the pipeline fluid. Due to the unilateral hydraulic force of the gate in the traditional high-pressure slab valve when it is closed, there is a large positive pressure between the other side of the gate and the sealing surface of the valve seat, and this positive pressure causes the valve plate to The friction between the sealing surface on one side of the valve seat and the sealing surface of the valve seat increases during opening and closing, which intensifies the wear between the sealing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/16F16K3/30F16K31/50
Inventor 不公告发明人
Owner 郑健
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