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Method for testing rotary valve pneumatic actuator

A pneumatic actuator and testing method technology, applied in the testing of machine/structural components, testing of mechanical components, using stable tension/pressure to test the strength of materials, etc., can solve the problem of testing methods for pneumatic actuators that do not have rotary valves , The quality of the valve pneumatic actuator cannot be guaranteed, and the force value cannot meet the specified requirements, etc., to achieve the effect of small pressure, convenient testing, and accurate average transmission ratio

Inactive Publication Date: 2013-11-27
QUALITY INSPECTING CENT OF PUMP & VALVE PROD OF ZHEJIANG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that there is no test method for rotary valve pneumatic actuators, and the quality of valve pneumatic actuators cannot be guaranteed. After being put into use, it is found that the quality of single-acting rotary valve pneumatic actuators and double-acting rotary valve pneumatic actuators Stable, after a period of use, the output force value does not meet the specified requirements, resulting in inaccurate control, and the rubber film or rubber seal in the single-acting rotary valve pneumatic actuator and the double-acting rotary valve pneumatic actuator, due to The wear and tear caused by sliding friction, or the aging phenomenon of inferior rubber can easily cause the leakage of the cylinder seal, resulting in insufficient output force value and failure of opening and closing. Since the cylinder piston polished rod and composite bearing are sealed, there is a certain oil film on the surface, which will last for a long time. The pipeline exposed on site is easily bonded by the dust on the site, resulting in jamming and jumping when the cylinder is opened and closed, and causing the cylinder seal to fail and leak
The quality problems of the above-mentioned single-acting rotary valve pneumatic actuators and double-acting rotary valve pneumatic actuators are often neglected by people, which eventually lead to problems in the automatic control of the pipeline and cause safety accidents

Method used

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  • Method for testing rotary valve pneumatic actuator

Examples

Experimental program
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Effect test

Embodiment 1

[0065] use as figure 1 The test device shown is used for no-load test, sealing test, strength test, load test and action life test of double-acting rotary valve pneumatic actuators.

[0066] The test device includes a first gas storage tank 26, a second gas storage tank 19, a third gas storage tank 11, a three-position five-way double-control solenoid valve 64, a first two-position five-way single-control solenoid valve 92, a second two-way Five-position single-control solenoid valve 94, automatic control system 23, double-acting rotary valve pneumatic actuator 72, back pressure cylinder 93, air source 1, water separation filter 2, inlet pressure gauge 3, pressure reducing valve 4, Outlet pressure gauge 5, lubricator 6, first high pressure solenoid valve 62, first high pressure exhaust valve 65, first high pressure gauge 66, second high pressure solenoid valve 63, second high pressure exhaust valve 67 and second high pressure pressure gauge 68,

[0067] The double-acting rot...

Embodiment 2

[0113] refer to figure 1 As shown in the test device of the first embodiment, the no-load test, sealing test, strength test, load test and action life test are carried out on the single-acting rotary valve pneumatic actuator.

[0114] The testing device in embodiment two is identical with the testing device in embodiment one in that:

[0115] Including air source 1, water separation filter 2, inlet pressure gauge 3, pressure reducing valve 4, outlet pressure gauge 5, lubricator 6, exhaust valve of the third air storage tank 7, air supply valve of the third air storage tank 8. The third gas storage tank pressure sensor 9, the third gas storage tank pressurization solenoid valve 10, the third gas storage tank 11, the third gas storage tank pressure relief solenoid valve 12, the third gas storage tank safety valve 13, the third gas storage tank Three gas tank pressure gauges 14, the second gas tank exhaust valve 15, the second gas tank supply valve 16, the second gas tank pressure...

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Abstract

The invention relates to a method for testing a rotary valve pneumatic actuator. The method for testing the rotary valve pneumatic actuator can be used for precisely testing a single-acting rotary valve pneumatic actuator and a double-acting rotary valve pneumatic actuator. The method is used for carrying out no-load test detection, seal test detection, strength test detection, load test detection and action life test detection on the double-acting rotary valve pneumatic actuator and the single-acting rotary valve pneumatic actuator.

Description

technical field [0001] The invention relates to a testing method for a rotary valve pneumatic actuator. Background technique [0002] With the development of automatic control technology, intelligent control and remote control are increasingly used in pipeline transportation construction. Valves with automatic control technology replace manual valves, which greatly reduces the danger of operators operating valve pressure components at close range and improves Work efficiency, realize the opening and closing of the pipeline system, the adjustment and control of the flow, the automatic valve actuators include electric, electromagnetic, hydraulic and pneumatic actuators, of which single-acting rotary valve pneumatic actuators and double-acting rotary valves Valve pneumatic actuator is the most rapid valve control product developed and put into use in recent years. It is more and more widely used in pipeline transportation systems with high safety requirements such as power plan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M3/28G01N3/10
Inventor 吴建东林美陈敬秒王一翔金靖斌
Owner QUALITY INSPECTING CENT OF PUMP & VALVE PROD OF ZHEJIANG PROVINCE
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