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Test device for rotary valve pneumatic actuator

A pneumatic actuator and pneumatic actuation technology, which is used in the testing of machine/structural components, measuring devices, and testing of mechanical components, etc. Instability, inability to guarantee the quality of the valve pneumatic actuator, and failure of the force value to meet the specified requirements, etc., to achieve the effects of low pressure, convenient testing, and accurate average transmission ratio

Inactive Publication Date: 2015-07-29
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 for valve pneumatic actuators for no-load test, load test, sealing test, strength test and action life test for single-acting rotary valve pneumatic actuators and double-acting rotary valve pneumatic actuators. The quality of the valve pneumatic actuator cannot be guaranteed. After being put into use, it is found that the quality of the single-acting rotary valve pneumatic actuator and the double-acting rotary valve pneumatic actuator is unstable. After a period of use, the output force value cannot meet the specified requirements. Lead to inaccurate control, as well as rubber film or rubber seals in single-acting rotary valve pneumatic actuators and double-acting rotary valve pneumatic actuators, due to wear caused by sliding friction, or poor-quality rubber aging, it is easy to cause cylinder seals Leakage, resulting in insufficient output force value, failure of opening and closing, etc. Since the cylinder piston rod and composite bearing are sealed, there is a certain oil film on the surface, and the pipeline is exposed to the site for a long time and is easily bonded by the dust on site, resulting in the cylinder being stuck when opening and closing. Resistance and beating phenomenon, and cause cylinder seal failure and leakage
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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  • Test device for rotary valve pneumatic actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] The working principle of Embodiment 1 is as follows: the first gas storage tank 26, the second gas storage tank 19 and the third gas storage tank 11 do not operate during the no-load test, sealing test, and strength test, and the gas source 1 passes through the first gas storage tank. The high-pressure supply pipeline supplies air to the first port 72-1 of the rotary valve pneumatic actuator sample for experiments, and the gas source 1 passes through the second high-pressure supply pipeline to supply air to the second port 72-2 of the rotary pneumatic actuator sample. The experiment was carried out by using the first high-pressure solenoid valve 62 to control the compressed air in the first high-pressure supply pipeline and the second high-pressure solenoid valve 63 to control the compressed air in the second high-pressure supply pipeline. The double-acting rotary pneumatic actuator was tested. Sample 72 carries out reversing action.

[0087] During the load test and th...

Embodiment 2

[0097] The working principle of Embodiment 2 also refers to Embodiment 1. The difference from Embodiment 1 is: the high-pressure supply pipeline formed by the high-pressure solenoid valve, high-pressure exhaust valve and high-pressure pressure gauge during the no-load test, sealing test and strength test Push the single-acting rotary valve pneumatic actuator sample action; when carrying out the load test and action life test, the first gas storage tank 26 provides pressure through the three-position five-way double-control solenoid valve 64 to push the single-acting rotary valve pneumatic actuator For the sample action, there is no need to add the second pressure supply pipeline as the reverse power of the single-acting rotary valve pneumatic actuator sample, and the rest of the working principle is the same as that of the first embodiment.

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Abstract

The invention relates to a testing device for a rotary valve pneumatic actuator. The testing device for the rotary valve pneumatic actuator can respectively carry out no-load tests, load tests, seal tests, strength tests and action life tests on a single-action rotary valve pneumatic actuator and a double-action rotary valve pneumatic actuator, the device is overall a digitized closed-loop control system, the rotary valve pneumatic actuator which is long in service life and stable is tested, testing precision is high, stability is high, testing is convenient, detection speed is high, and the whole testing device is simple in structure and low in maintenance cost.

Description

technical field [0001] The invention relates to a testing device for a valve pneumatic actuator, in particular to a testing device 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 trans...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00G01M3/26G01N3/12
Inventor 林美王一翔陈敬秒陈振吴建东
Owner QUALITY INSPECTING CENT OF PUMP & VALVE PROD OF ZHEJIANG PROVINCE
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