Hydraulic Shock Test Method

Abstract

The invention discloses a hydraulic impact test method for testing the impact resistance performance of a pressure accumulator on a pipeline, which is mainly realized based on a hydraulic impact test system. The system is mainly composed of an impact table and a hydraulic cylinder. The inner cavity of the cylinder is divided into the first and second chambers by a piston, the piston is connected with the piston rod, and the piston rod cooperates with the table top of the impact table, the first chamber is close to the table top of the impact table, and filled with compressible fluid medium, Whereas the second chamber communicates with the accumulator liquid chamber, and both are also filled with an incompressible fluid medium. The hydraulic impact test method of the present invention utilizes the impact table to realize the hydraulic impact, is simple and convenient to operate, can effectively realize the impact resistance test of the pressure accumulator, and can be accurately set by simply adjusting the impact table working parameters such as the height of the impact table and the time for holding the brake. The pressure shock amplitude can be set to meet different precise test requirements.

Description

technical field [0001] The invention particularly relates to a hydraulic shock test system, which can be applied to simulate the pressure shock in a rocket fuel delivery pipeline and assess the shock resistance performance of a pressure accumulator on the pipeline. Background technique [0002] In the pressure shock test in the simulated rocket fuel delivery pipeline, the simulated medium is water, which is used to evaluate the shock resistance performance of the pressure accumulator. The impact force cannot be determined in advance either. [0003] At present, using the traditional impact table with the impact controller can provide more accurate impact peak and pressure rise time, but because the impact peak value provided by the impact table is an accurate value, it cannot be directly applied to the pressure shock simulation test. [0004] In addition, most of the current hydraulic shock test equipment can compress the bellows air cavity of the pressure accumulator throu...

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Problems solved by technology

[0002] In the pressure shock test in the simulated rocket fuel delivery pipeline, the simulated medium is water, which is used to evaluate the shock resistance performance of the pressure accumulator. Impact force cannot be determined in advance

[0003] At present, the use of the traditional impact table with the impact controller can provide more accurate impact peak value and pressure rise time, but precisely because the impact peak value provided by the impact table is an accurate value, it cannot be directly applied to the pressure shock simulation test

[0004] In addition, most of the current hydraulic shock test equipment can compress the bellows air cavity of the pressure accumulator through the transmission of the actuator to achieve impact, but due to the requirements of hydraulic shock (directly impacting the bellows air cavity through the pressurized liquid) and the pressure accumulator Its own structure is complex, and it is difficult to use it directly

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