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Method for testing air leakage of multi-ported valve

A test method and multi-way valve technology, applied in the testing of mechanical components, testing of fluid tightness, testing of machine/structural components, etc., can solve problems such as large equipment and complex structure

Inactive Publication Date: 2018-08-03
程冬青
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The multi-way valve is a commonly used valve component, which is suitable for many different occasions. In some occasions, the requirements for the air tightness of the valve are relatively high. Some valve air tightness testing devices generally have a complex structure and relatively large equipment, so that proper measurement accuracy can be achieved

Method used

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  • Method for testing air leakage of multi-ported valve
  • Method for testing air leakage of multi-ported valve
  • Method for testing air leakage of multi-ported valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: When testing the multi-way valve, firstly connect the first silicone tube 5 and the second silicone tube 6 to two joints in the multi-way valve, and a plurality of the flexible lines 7 are connected at one end. The plug 8 is connected to the remaining joints in the multi-way valve. After the device connection is completed, sealing measures should be taken; Inflate, observe the pointer of the pointer gas pressure gauge 1, the pointer gradually increases from zero until it reaches the maximum position and remains stable, when the pointer of the pointer gas pressure gauge 1 is observed to be stable, disconnect the small The switch of the air pump 3; then observe the pointer of the pointer gas pressure gauge 1 at regular intervals, if the pointer remains motionless, it means that the tested multi-way valve joint does not leak, if the pointer turns, it means that the tested The air leakage of the multi-way valve is measured, and the speed of the pointer rotatio...

Embodiment 2

[0022] Embodiment 2: The device also includes a reduced-diameter joint 9, which can be installed on the extension ends of the first silicone tube 5 and the second silicone tube 6, such as the tested multi-way valve joint When it does not match the first silicone tube 5 and the second silicone tube 6, it is only necessary to install the matched reducing joint 9 to the extension end of the silicone tube. In this way, the The multi-way valve air leakage test device can meet the air leakage inspection test of multi-way valve joints of different specifications on the market.

Embodiment 3

[0023] Embodiment 3: When testing the multi-way valve, first connect the first silicone tube 5 and the second silicone tube 6 to two joints in the multi-way valve, and a plurality of the flexible lines 7 are connected at one end. The plug 8 described above is connected to the rest of the joints in the multi-way valve. At this time, the sealing between the plug 8 connected to one end of the expansion line 7 and the rest of the joints in the multi-way valve is very important for the test of the multi-way valve. The degree of sealing between the two is guaranteed to be airtight. The expansion line 7 is made of silicone tube material, and the interior is a hollow pipeline. One end of the expansion line 7 is connected to the air outlet of the small air pump 3, and the other end is connected to the plug 8 , the expansion line 7 and the plug 8 are integrally formed, and the inside of the plug 8 is also hollow. When performing a multi-way valve test, the switch of the small air pump 3...

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Abstract

The invention discloses a method for testing the air leakage of a multi-ported valve, and the method comprises the steps: opening a switch of a small air pump, enabling the small air pump to import air into a detected multi-ported valve, enabling the small air pump to inflate an end cap through an internal pipe of a telescoping line, and enabling the end cap to be expanded; observing the pointer of a pointer-type air pressure meter, wherein the pointer gradually increases from zero till to the maximum position, and then remains steady; observing the pointer of the pointer-type air pressure meter: determining that the detected multi-ported valve does not leak air if the pointer always remains still, or determining that the detected multi-ported valve leaks air if the pointer returns, wherein the returning speed of the pointer indicates that the severity of the air leakage of the detected multi-ported valve. The beneficial effects of the invention are that the method, compared with a conventional soap-suds detection method, is more accurate and quicker; the method just needs several seconds for the detection of whether the multi-ported valve leaks air; in particular, the method is more accurate for a condition that the air leakage is very small.

Description

technical field [0001] The invention relates to a valve testing method, in particular to a multi-way valve air leakage testing method. Background technique [0002] The multi-way valve is a commonly used valve component, which is suitable for many different occasions. In some occasions, the requirements for the air tightness of the valve are relatively high. Some valve air tightness testing devices generally have a relatively complicated device structure and relatively large equipment, so that proper measurement accuracy can be achieved. Therefore, how to design a multi-way valve air leakage test device with simple and reasonable structure, low cost and can meet the accuracy requirements urgently needs to be developed. Contents of the invention [0003] The object of the present invention is to solve the above problems, design a multi-way valve leakage testing device, and provide a multi-way valve leakage testing method. [0004] To achieve the above object, the technica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/28G01M13/00
CPCG01M3/2876G01M13/00
Inventor 程冬青
Owner 程冬青