J091014 蒸気加減弁の弁体に作用する流体力に関する研究([J09101]流体関連の騒音と振動(1))

概要

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A flow induced vibration of a control valve for main steam lines in thermal and nuclear power plants are examined. The steam control valve is used for control the main steam flow rate under various operation conditions. Therefore, the flow around the valve head can be transonic and high level dynamic fluid forces can act on the valve head. The flow oscillation around the valve head can cause the self-excited vibration of the valve head and the valve failure. In the present study, added damping forces are measured by exciting the valve and influences of trajectories of the valve head excitation is also examined. Numerical simulations are also conducted in order to clarify the flow characteristics under the valve head excitation.
一般社団法人日本機械学会の論文
2011-09-11