Automatic testing method and apparatus for performance of breathing relief valve

An automatic testing device and automatic testing technology, which is applied in fluid tightness testing, measuring devices, testing of machine/structural components, etc., can solve problems such as inability to realize automatic control, large influence of human factors, large detection errors, etc., and achieve Analyze and improve the effect of safety valve performance, strong anti-interference ability and easy operation

Inactive Publication Date: 2009-07-22
XI AN RAILWAY TRANSPORTATION EQUIP
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an automatic test method and device for the performance of a breathing safety valve, which solves the technical problems that the detection in the background technology cannot realize automatic control, is greatly affected by human factors, has large detection errors, and has unsafe factors.

Method used

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  • Automatic testing method and apparatus for performance of breathing relief valve
  • Automatic testing method and apparatus for performance of breathing relief valve
  • Automatic testing method and apparatus for performance of breathing relief valve

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Embodiment Construction

[0049] The invention can simulate the actual application situation. According to the pressure change in the tank body of the tanker, the valve plate of the safety valve will move. The invention judges whether the performance of the safety valve meets the design requirements by detecting the opening pressure value of the valve plate of the safety valve.

[0050] see figure 1 , 2 , the implementation steps of the breathing safety valve performance automatic testing method of the present invention include:

[0051] (1) The first is identity verification. Identity verification is to input the user information including user name and user password into the computer control device, and verify and confirm the user authority through the computer control device.

[0052] (2) Connect the interface of the breathing safety valve to be tested with the interface of the test gas circuit system.

[0053] (3.1) Determine the test category: the test category includes breath test, inhalation ...

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Abstract

An automatic testing method and device for the performance of a breathing safety valve, which are used for automatic testing of the performance of the breathing safety valve. The present invention is mainly composed of a test device and a control device. The air intake valve communicates with the exhalation air bag through the decompression valve, the exhalation air bag communicates with the air storage bag through the exhalation control valve, and the vacuum pump communicates with the suction air bag. The air bag is communicated with the air storage bag through the suction control valve, and the air storage bag is provided with exhalation, suction, airtight pressure sensors and an interface connected with the valve cavity of the breathing safety valve. The present invention firstly determines the test category and method, sets standard pressure parameters, then collects and tests pressure parameters such as exhalation, inhalation and air tightness, and compares and analyzes the control device to obtain test results. The invention solves the technical problems in the background technology that the detection cannot realize automatic control, is greatly influenced by human factors, has large detection errors, and has unsafe factors. The detection method of the invention is flexible and easy to operate.

Description

technical field [0001] The invention relates to an automatic testing method and device for the performance of a breathing safety valve controlled by a microcomputer, and is especially suitable for the performance testing of the breathing safety valve for railway tank cars. Background technique [0002] The development and promotion of new 70-ton railway freight cars will increase the applicability, safety and reliability requirements of railway tank cars. The power-assisted manholes used in 70-ton railway tank cars have higher requirements on the sealing performance of the manholes. Therefore, higher requirements are put forward for the performance and quality of breathing safety valves. The existing test bench for testing the performance of breathing safety valves mainly relies on manual operation, and the test methods and equipment performance are backward, which can no longer meet the technical requirements of 70-ton tank trucks for breathing safety valves. It mainly has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M19/00G01M3/00G01M3/28G01M99/00
Inventor 张豫生万华
Owner XI AN RAILWAY TRANSPORTATION EQUIP
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