The results of experiments indicated that the usage of buffer tank had good steady effects on the pressure in both sides of the reducing valve.

实验结果表明，缓冲罐的使用对减压阀前、后压力均能起到很好的稳定作用。

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In the steady state, the control room water, drainage same, the main valve opening constant outlet pressure stability.

在稳定状态下，控制室进水、排水相同，主阀开度不变，出口压力稳定。

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The result shows that in big pressure ratio and valve open conditions, gas fluctuation in valve seat throat is small and flow is steady.

在大压比、大升程条件下，喉部各测点的脉动压力不大，流动稳定。

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