Self-operated protection device for pipeline

专利名称：Self-operated protection device for pipeline发明人：Xiangwei Zeng申请号：US10910380申请日：20040803公开号：US06895994B2公开日：20050524

专利附图：

摘要：A protection device which is capable of cutting off a pipeline when the pipelineleaks due to the rupture of the pipe self-operatedly closes the pipeline using fluid kineticenergy. A control rod converts linear movement of a piston into the opening and closingmovement of a main valve core. The piston separates a hydraulic cylinder chamber into a

first chamber and a second chamber. A restoring spring in the first chamber restores acontrol piston to an initial position. A control valve in the second chamber controlsdischarge of fluid from the second chamber. A flow state-sensing device introduces fluidin the fluid pipe to the second chamber when the fluid pipe ruptures and leaks.

申请人：Xiangwei Zeng

地址：11, 4th Section of Renmin Nanlu Chengou City, Sichuan Province 610041 CN

国籍：CN

代理机构：Nelson Mullins Riley & Scarborough, LLP

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