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Hydraulic low-pressure pulse experiment method of aircraft

A technology of low-pressure pulse, experimental method, applied in the field of hydraulic pulse

Active Publication Date: 2014-03-19
JIANGXI HONGDU AVIATION IND GRP
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

There is no pulse test for flexible connection components with working pressure between 0.35MPa and 2MPa

Method used

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  • Hydraulic low-pressure pulse experiment method of aircraft
  • Hydraulic low-pressure pulse experiment method of aircraft
  • Hydraulic low-pressure pulse experiment method of aircraft

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Embodiment Construction

[0024] The present invention is described in detail below in conjunction with accompanying drawing:

[0025] An experimental method of aircraft hydraulic low pressure pulse, the experimental method is realized in the low pressure pulse test system, the test method is characterized in that:

[0026] A) When performing the pulse test, firstly fill the pressurized oil tank 25 with the initial pressure required by the test piece 26, close the stop valve 21, start the oil source, and boost the pressure to the working pressure specified in the test; at this stage, the electromagnetic reversing valve 17 is in the closed position, the output flow of the oil pump 6 stops at the oil supply port of the electromagnetic reversing valve 17, and the pressure level at the front end of the electromagnetic reversing valve 17 is the system pressure; while the pipeline from the electromagnetic reversing valve 17 to the end of the test piece The flow rate is zero, and the pressure is the initia...

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Abstract

The invention relates to a hydraulic low-pressure pulse experiment method of an aircraft and belongs to a hydraulic pulse technology. The hydraulic low-pressure pulse experiment method comprises the steps of firstly providing initial pressure required by a test piece for a supercharged oil tank during a pulse experiment, driving a magnetic exchange valve by utilizing a signal generated by a control system when hydraulic pulse pressure begins to produce, and stilling keeping certain pressure after pulse waves attenuate, wherein the pressure is identical to rated pressure of the tested piece; adjusting a precise throttle valve, controlling flows entering a pressure reducing cylinder and achieving the purpose of accurately controlling pulse waveform parameters at an ascent stage. By adopting the hydraulic low-pressure pulse experiment method, the pulse experiment in a flexible connecting assembly qualification test of an aircraft fuel system is achieved, and conditions are provided for localization of flexible connecting assemblies of aircraft fuel systems in outer country.

Description

technical field [0001] The invention relates to an experimental method of aircraft hydraulic low pressure pulse, which belongs to hydraulic pulse technology. Background technique [0002] In the aircraft hydraulic pulse test system, the existing test bench is composed of a power system, a control system and a pressurized cylinder. Due to the large output power of the hydraulic power system, this test bench is only suitable for medium and high pressure pulse tests of hydraulic accessories. There is no pulse test for flexible connection components with working pressure between 0.35MPa and 2MPa. Contents of the invention [0003] In order to overcome the above defects, the object of the present invention is to provide an aircraft hydraulic low-pressure pulse experimental method for performing pulse tests on flexible connection components with working pressures between 0.35MPa and 2MPa. [0004] In order to achieve the above object, the present invention adopts the following...

Claims

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Application Information

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IPC IPC(8): F15B19/00B64F5/00B64F5/60
Inventor 商辉刘波刘渊王小峰沈福红吴军王宝亮汤琴
Owner JIANGXI HONGDU AVIATION IND GRP
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