Mitigating check valve slamming and subsequentwater hammer events for PPFS using MOC

TIAN Wenxi; SU Guanghui; WANG Gaopeng; QIU Suizheng; XIAO Zejun

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Mitigating check valve slamming and subsequentwater hammer events for PPFS using MOC

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The method of characteristic(MOC) was adopted to analyze the check valve-induced water hammer behaviors for a Parallel Pumps Feedwater System(PPFS) during the alternate startup process.The motion of check valve disc was simulated using inertial valve model.Transient parameters including the pressure oscillation,local flow velocity and slamming of the check valve disc etc.have been obtained.The results showed that severe slamming between the valve disc and valve seat occurred during the alternate startup of parallel pumps.The induced maximum pressure vibration amplitude is up to 5.0 MPa.The scheme of appending a damping torque to slow down the check valve closing speed was also performed to mitigate of water hammer.It has been numerically approved to be an effective approach.

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来源
《核技术：英文版》 |2009年第2期|118-123|共6页
作者
TIAN Wenxi; SU Guanghui; WANG Gaopeng; QIU Suizheng; XIAO Zejun;
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作者单位

State Key Laboratory of Multiphase Flow in Power Engineering;

Department of Nuclear Science and Technology;

Xi＇an Jiaotong University;

Xi＇an 710049;

China;

National Key Laboratory of Bubble Physics ＆ Natural Circulation;

Nuclear Power Institute of China;

Chengdu 610041;

China;

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原文格式 PDF
正文语种 chi
中图分类控制机件;
关键词
止回阀; 建设部; 事件; 水锤泵; 给水系统; 启动过程; 压力振动; 瞬态参数;

Mitigating check valve slamming and subsequentwater hammer events for PPFS using MOC

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