Novel air impermeability detecting sealing plug

A technology of air tightness detection and sealing plug, which is applied in the direction of using liquid/vacuum degree for liquid tightness measurement and measuring the fluid's acceleration and deceleration rate, etc., can solve the problems affecting the accuracy and repeatability of the tightness test, etc. Achieve the effect of shortening the layout design workload, increasing the sealing contact area, and optimizing the layout

Inactive Publication Date: 2018-11-16
WISDRI WUHAN AUTOMATION
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  • Abstract
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  • Claims
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Problems solved by technology

The sealing effect of the sealing structure will directly affect the accuracy and repeatability of the sealing test

Method used

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  • Novel air impermeability detecting sealing plug
  • Novel air impermeability detecting sealing plug

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] The invention provides a novel air tightness detection sealing plug, such as figure 1 As shown, it includes a plug housing 1 , a plug cover 2 , a plug piston 3 , a plug piston rod 4 , a plug rubber ring 5 and a sealing ventilation joint 6 .

[0018] Wherein, one end of the plug housing 1 is provided with an opening, the aperture of the opening is larger than the aperture of the nozzle 9 to be plugged, and the other end is sealed by the plug cover 2; the plug piston 3 passes through the sealing ring 8 The air-tight cooperation is arranged in the plug housing 1; the plug piston rod 4 is arran...

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Abstract

The invention discloses a novel air impermeability detecting sealing plug which comprises a plug housing, a plug piston, a plug piston rod, a sealing rubber ring and a sealing ventilation joint. A cavity with a sealed end is formed by the plug housing and a plug sealing cover. The sealing ventilation joint introduces a gas into a rod cavity in order that the plug piston and the plug piston rod push the sealing rubber ring. The sealing rubber ring is deformed in the radial direction so as to cover and seal the outer wall of a pipe opening and seal the open end of the plug housing. Thus, the opening of a pipe body to be tested is wrapped in the sealing cavity formed by a sealing plug, thereby greatly reducing the direct damage of a pipe opening component to a sealing component and prolongingthe service life of the sealing component.

Description

technical field [0001] The invention relates to a sealing device, in particular to a novel air-tightness detection sealing plug. Background technique [0002] In recent years, due to the rapid development of my country's automobile industry, the demand for leak detection in the automobile production process has also grown rapidly. As a technical indicator closely related to products, airtightness has been valued by more and more enterprises. Especially for pipes and cavity parts with strict sealing requirements. Sealing test is a major process in the production process of such parts, and is a technical indicator closely related to product quality and use safety. It is also a key step to verify the leak-proof or waterproof performance of ordinary products. Generally, it is carried out after product assembly or welding. [0003] The plugging structure is an important structural component in the leak detection process. The sealing effect of the sealing structure will direc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/02G01M3/28
Inventor 雒金强李阳李传涛
Owner WISDRI WUHAN AUTOMATION
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