Watermedium hydraulic systems are widely used in coal miningmachinery. As the power of hydraulic system becomes higher, the\nflow and pressure of water medium relief valve are also higher, and the flow may reach 2000 L/min. However, there is no relevant\ntest-bed which could provide instantaneous high-pressure and high-flow to support the experiment for high-flow relief valve;\nconsequently, this impact test-bed for high-flow water medium relief valve is designed to satisfy fast loading demand. Through\nbuilding model, simulation analysis, and construction of an impact test-bed of high-flow water medium relief valve, the dynamic\nperformance of high-flow water medium relief valve is detected. The setting pressure of relief valve, the accumulator volume and\nthe filling fluid pressure, and the damping of cartridge valve can be changed, and the dynamic performance of high-flow water\nmedium relief valve under different impact loads is detected.The results show that the designed impact test-bed of high-flow water\nmedium relief valve could provide required high-pressure and high-flow emulsion for the tested water medium relief valve, and it\ncould control the strength of impact load, which is an energy saving, high efficiency, and low cost method.
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