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Ball valve stem airtight performance testing device

A test equipment and valve stem technology, which is used in fluid tightness testing, liquid tightness measurement using liquid/vacuum, and machine/structural component testing. It can solve problems such as difficult air tightness testing and difficult sealing. , to achieve the effect of comprehensive testing and high degree of automation

Pending Publication Date: 2018-02-23
宁波宇华实业股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of its irregular shape, it is difficult for conventional testing equipment to seal it, and it is also difficult to test its airtightness

Method used

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  • Ball valve stem airtight performance testing device
  • Ball valve stem airtight performance testing device
  • Ball valve stem airtight performance testing device

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Experimental program
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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] A ball valve stem airtight performance test equipment, such as Figure 1 to Figure 19 As shown, it includes a lower base plate 2, an upper base plate 1 located directly above the lower base plate 2, two vertical rods 3 connecting the upper base plate 1 and the lower base plate 2, and a cylinder 4 fixed upside down on the upper base plate 1. The upper base plate 1 and The lower base plate 2 is arranged in parallel, the cylinder body of the cylinder 4 is fixed to the upper base plate 1, the piston rod 401 of the cylinder 4 is set through the upper base plate 1, the lower seal sleeve 6 is arranged on the lower base plate 2, and the upper base plate 1 An upper sealing sleeve 5 is fixed on the piston rod 401 on the side, and the upper sealing sleeve 5 is located directly above the lower base plate 2 .

[0036] The lower sealing sleeve 6 incl...

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PUM

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Abstract

The invention discloses a ball valve stem airtight performance testing device, which relates to the field of ball valve stem testing. The ball valve stem airtight performance testing device comprisesa lower base plate, an upper base plate above the lower base plate, a vertical pole making the upper base plate connected with the lower base plate, and an air cylinder inverted on the upper base plate, wherein a piston rod of the air cylinder is arranged to pass through the upper base plate, a lower sealing sleeve is arranged on the lower base plate, an upper sealing sleeve is fixed to a piston rod on the lower side of the upper base plate, and the upper sealing sleeve is located directly above the lower base plate. The invention aims to propose a polyethylene ball valve stem air tightness performance testing device which can seal a valve stem and can perform segmented monitoring.

Description

technical field [0001] The invention relates to the field of ball valve stem test, in particular to a polyethylene ball valve stem airtight performance test equipment. Background technique [0002] In the gas pipeline system, the polyethylene ball valve acts as a switch in the process of pipeline gas transmission, and the pipeline in operation usually needs to control the downstream gas transmission through the switch of the ball valve. Compared with water conservancy transportation, the risk factor caused by leakage during gas transportation is higher. Therefore, the quality requirements for pipe valves used for gas transportation are correspondingly higher. Before leaving the factory, pipe valves will undergo strict airtight performance tests. . Since the middle valve seat of the polyethylene ball valve and the connecting walls on both sides are assembled by welding, the disassembly and assembly are irreversible. Some parts of the ball valve can be tested for airtight pe...

Claims

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Application Information

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IPC IPC(8): G01M3/28G01M3/04
CPCG01M3/04G01M3/2876Y02E30/30
Inventor 孙斌陈建强赵立刚王广
Owner 宁波宇华实业股份有限公司