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Novel ball valve opening and closing piece and spherical monoclinic weld joint type all-welded ball valve comprising same

A technology of fully welded ball valves and opening and closing parts, which is applied in the direction of cocks including cutting devices, valve devices, engine components, etc., can solve the problems of easy abrasion and damage, maintain contact friction, etc., to ensure welding quality and high material utilization rate Effect

Active Publication Date: 2016-05-18
曲德湖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, during the opening and closing process of the existing ball valve, due to the need to rely on the floating valve seat on the upstream and downstream sides under the action of the spring force, the sealing surface of the valve seat is always attached to the surface of the ball and contacted with the initial sealing ratio. Pressure to ensure low-pressure sealing, so that the sealing surface of the valve seat and the surface of the ball are always in contact with friction, so it is easy to be scratched and damaged during long-term operation
The bolted assembled ball valve can be disassembled, repaired or replaced, but not for the fully welded ball valve, so the internal parts (sealing surface) of the existing fully welded ball valve cannot have the same life as the welded valve body

Method used

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  • Novel ball valve opening and closing piece and spherical monoclinic weld joint type all-welded ball valve comprising same
  • Novel ball valve opening and closing piece and spherical monoclinic weld joint type all-welded ball valve comprising same
  • Novel ball valve opening and closing piece and spherical monoclinic weld joint type all-welded ball valve comprising same

Examples

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Embodiment

[0054] Such as Figure 1-7 As shown, it is a schematic diagram of the assembly of the spherical monoclinic welded seam fully welded ball valve without friction in the valve seat switching process of the present invention.

[0055] A spherical single-slope fully welded ball valve with no friction in the process of opening and closing of the ball and seat, mainly including: a right hemispherical valve body assembly Z1, a left hemispherical valve body assembly Z2, two valve seat assemblies Z3, a ball 15, two A valve seat support disc 16.

[0056] The right hemispherical valve body assembly Z1 and the left hemispherical valve body assembly Z2 each include a hemispherical shell 1, a connecting pipe 2 and a pivot sleeve 3; the inner wall of the passage of the connecting pipe 2 is provided with a valve seat assembly setting part; the pivot sleeve The central axis of 3 is vertically intersected with the channel axis of the connecting pipe 2; the ring surface of the butt welding groov...

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Abstract

The invention discloses a novel ball valve opening and closing piece. The novel ball valve opening and closing piece comprises two valve seat assemblies, a ball and two valve seat supporting disks. According to the opening and closing piece, by the adoption of the valve seat supporting disks and a cam structure of a valve seat, friction between the ball and the valve seat of a ball valve is avoided in the opening and closing process. The invention further discloses a spherical monoclinic weld joint type all-welded ball valve comprising the novel ball valve opening and closing piece.

Description

technical field [0001] The invention relates to the field of valves, in particular to a novel opening and closing part of a ball valve and a spherical monoclinic fully welded ball valve containing the same. Background technique [0002] After nearly a hundred years of continuous evolution and development, so far, there are two main types of ball valve structures. One is a multi-stage assembled ball valve (two-stage, three-stage). The sections are connected and assembled by bolts, and the sections are sealed by seals to prevent leakage. During use, if leakage occurs, the internal parts can be replaced or repaired by disassembling. The other type is a fully welded ball valve. After assembly, welding and forming, the valve body has no leakage point. During use, if the internal parts are damaged, they cannot be disassembled for maintenance. [0003] At present, there are mainly two types of fully welded ball valves at home and abroad: cylindrical and approximately spherical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/08
CPCF16K5/0605F16K5/08
Inventor 曲德湖
Owner 曲德湖
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