Abstract
In this paper, based on the servo valve controlled pressure cylinder, a scheme of hydraulic pipeline adjustable parameters water hammer wave test system is proposed. By changing the quality of pressure cylinder piston rod and controlling the opening of servo valve, the overshoot, pressure rise rate and oscillation of water hammer wave can be controlled. On this basis, based on AMESim simulation software, the paper studies the influence of different parameters of pressure cylinder and servo valve on water hammer wave, which provides the basis for the selection of main components. Finally, the experimental research is carried out on the designed system, and the results are consistent with the simulation results. The generated water hammer wave meets the requirements of the test standard, which proves that the hydraulic adjustable parameters water hammer test system developed in this paper is successful and feasible.
Highlights
When the hydraulic system is working, the sudden closing or opening of the valve will lead to the rapid change of oil flow rate, it will cause strong pressure impact in the pipeline, which is called water hammer phenomenon [1]
Let the inlet of the pressure cylinder is provided with a fixed pressure, when the servo valve is suddenly opened, the piston of pressure cylinder drives the load with mass of m downward
In order to explore the influence of different parameters on the water hammer wave test system, this chapter uses the simulation and dynamic analysis software AMESim based on the bond graph to simulate the system [6]
Summary
When the hydraulic system is working, the sudden closing or opening of the valve will lead to the rapid change of oil flow rate, it will cause strong pressure impact in the pipeline, which is called water hammer phenomenon [1]. In the field of aerospace, the requirements for the impact resistance of hydraulic pipes are higher and higher [2]. The development of high-performance water hammer pulse test system is of great significance to meet the test requirements of high-quality and high-performance hydraulic pipelines
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