Research on the Nominal Flow Testbench of the Safety Valve
The demand for the nominal flow of the leg safety valve is increasing,with the application of large mining height fully-mechanized face becomes more and more widespread.The nominal flow opening,overflow and closing performance is the main perform-ance indicator of the safety valves,the test requirements for high pressure,large flow and high pressure gradient make the construction of the testbench more difficult.In view of this problem,a solution of the testbench was designed,and the key parameters of accumulator,cylinder and two-port valve were obtained through theoretical calculation.The feasibility of the testbench solution and the parameters of equipments were verified by AMESim and Fluent simulations.Finally,the 3 000 L/min safety valve testbench was built,and the test-bench could satisfy the standard requirements through experiments.
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