Stop valve sealing gas detecting gauge

A technology of stop valve and sealing gas, which is applied in fluid tightness testing, liquid tightness measurement using liquid/vacuum degree, and measurement of fluid growth and deceleration rates, etc. It can solve problems such as indetermination and product scrapping.

Inactive Publication Date: 2018-08-24
盾安(芜湖)中元自控有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The concentricity is mainly tested with a concentricity inspection tool, and the high-precision inspection tool can detect most defects. However, regarding the sealing performance, some products do not leak after water inspection, but it is impossible to determine whether it is a micro-leakage, resulting in the product being scrapped.

Method used

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  • Stop valve sealing gas detecting gauge
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The stop valve first-line sealing gas inspection fixture includes the inspection fixture body 10, a flow meter and a low-pressure air source.

[0017] The checking tool body 10 is a tendon stick.

[0018] Such as figure 2 A detection port is provided at the bottom of the inspection tool body 10, and a gas passage 11 is provided in the inspection device body, and the gas passage communicates with the detection port and the gas inlet on the inspection device body. A gas pipe connector 20 is provided at the gas inlet, and the gas pipe connector is connected to an external pipe, and a flow meter is arranged on the external pipe, and the external pipe is connected to a low-pressure gas source.

[0019] A cylinder is arranged above the checking fixture body 10, and the cylinder exerts pressure on the top of the checking fixture body.

[0020] combine figure 1 , figure 2 , A flange frame 30 is provided below the inspection tool body 10, and a positioning groove 32 and an...

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Abstract

The invention discloses a stop valve sealing gas detecting gauge comprising a gauge body, a flow meter and a low-pressure gas source. A detecting port is arranged at the bottom of the gauge body. A gas passage is disposed in the gauge body and communicates with the detecting port and a gas inlet on the gauge body. The gas inlet is connected to the flow meter and the low-pressure gas source. At least the bottom of the gauge body is elastic, and an external force acting downward on the gauge body can force the bottom of the gauge body to elastically deform such that the detecting port is in sealed connection with the stop valve port. If the reading of the flow meter is 0, no airflow flows through the entire pipeline loop, and the valve seat and the core of the stop valve are well sealed; otherwise a leakage exists. The stop valve sealing gas detecting gauge described in the design ensures that a product has no micro-leakage condition and is qualified and avoids scrap in batches.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a checking tool for a shut-off valve. Background technique [0002] The shut-off valve inspection of refrigeration and air conditioning includes concentricity inspection and tightness inspection. The concentricity is mainly tested with a concentricity gage, and the high-precision gage can detect most of the defects. However, regarding the sealing, some products are indeed leak-proof after water testing, but it is impossible to determine whether it is a micro-leakage, resulting in the product being scrapped. Contents of the invention [0003] The technical problem solved by the present invention is to simplify the structure of the stop valve sealing test tool and improve the test efficiency of the stop valve sealing. [0004] In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: the stop valve first-lin...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01M3/28
CPCG01M3/2876
Inventor吴强坤刘朝伟熊磊磊
Owner盾安(芜湖)中元自控有限公司