MSR system steam control valve in high temperature,high pressure,variable working conditions for a long time,easy to appear internal erosion,vibration and noise.In order to guide the research and development of steam regulating valve of steam water separation system,CFD is used as an auxiliary means to carry out flow field simulation calculation for two sets of design schemes with different structure of valve body and sleeve surface respectively,analyze the flow line distribution of flow field,and judge whether its flow capacity,flow characteristics and slope deviation meet the design input requirements.The simulation and test results are compared by the flow characteristic test.The results show that the simulation error is within the allowable range and the simulation results are credible.The flow capacity,flow characteristics and slope deviation of the valve in Scheme 2 can all meet the design input requirements,and can simultaneously meet the adjustment requirements of the three operating conditions in the design input.
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