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Test bed valve sealing and operation characteristic detection system and detection method

A technology of valve sealing and detection system, which is applied in the direction of liquid tightness measurement, measuring device, and mechanical component testing using liquid/vacuum degree, which can solve the problems of interference mixed with unreliable data, low accuracy and efficiency, and poor stability. , to achieve the effect of improving work efficiency and accuracy, high degree of automation and precision, and good stability

Inactive Publication Date: 2015-10-21
XIAN AEROSPACE PROPULSION TESTING TECHN INST
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the shortcomings of the existing valve detection system, such as few functions, low precision and efficiency, poor stability, and possible interference and unreliable data, the present invention provides a test bench valve sealing and action characteristic detection system and detection method

Method used

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  • Test bed valve sealing and operation characteristic detection system and detection method
  • Test bed valve sealing and operation characteristic detection system and detection method
  • Test bed valve sealing and operation characteristic detection system and detection method

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Embodiment Construction

[0041] Preferred modes of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] 1. System composition and working principle

[0043] This system is used to test the performance of the valves used in the test bench, control the solenoid valve of the process system, measure and record the relevant pressure and valve closing detection signal at the same time, and realize the valve action performance test and sealing test of the test bench. The measurement accuracy reaches 0.2%, the control ability range is wide, and the control time accuracy is 1ms.

[0044] 1.1 System composition

[0045] The valve sealing and action characteristic detection system of the test bench is composed of a gas circuit system and a measurement and control system, see figure 1 . Among them, the gas circuit system consists of gas source (the gas source pressure includes 35MPa high-pressure gas and 6MPa control gas, both of which are delivered to...

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Abstract

The invention relates to a test bed valve sealing and operation characteristic detection system and detection method. The detection system includes a plurality of pressure sensors, an acquisition card, an acquisition computer, a direct-current power source and a display; the plurality of pressure sensors are arranged at the outlets of pressure reducing valves; the acquisition card is provided with a digital quantity input and output interface and an analog quantity input interface; output signals of the pressure sensors are connected into the analog quantity input interface of the acquisition card; the acquisition card is connected with the acquisition computer and an air path control valve respectively through the digital quantity input and output interface; the display is connected with the output end of the acquisition computer; and the direct-current power source is used for providing power for the pressure sensors. With the test bed valve sealing and operation characteristic detection system and detection method of the invention adopted, the reliability of the process system of a test bed can be improved, the centralized management of equipment can be facilitated, detection data real-time entering and storage functions can be realized, and working efficiency and accuracy of a valve detection process can be improved.

Description

technical field [0001] The invention belongs to the technical field of liquid rocket engine testing, and relates to a valve sealing and action characteristic detection system and detection method of a liquid rocket engine test bench. Background technique [0002] Electro-pneumatic valves and pneumatic-hydraulic valves are often used in combination in the propellant supply system for conventional liquid rocket engine ground tests, directly controlling the working process of the engine. It brings huge potential safety hazards to the test tasks. Therefore, it is particularly important to conduct regular inspections and tests to find potential safety hazards in time. At present, the valve detection system used in the test bench has the following problems: the method of manually interpreting valve performance and manually recording data has disadvantages such as few system functions, low precision and efficiency, poor stability, and possible interference and mixing of unreliable ...

Claims

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Application Information

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IPC IPC(8): G01M3/28G01M13/00
Inventor 张俊锋单琳赵政社王乃世彭飞陈海峰白文义赵建军朱成亮李谦鱼凡超朱小江
Owner XIAN AEROSPACE PROPULSION TESTING TECHN INST
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