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A FLUID VALVE ASSEMBLY AND A PROCESS VALVE POSITIONER
专利权人:
METSO FLOW CONTROL OY
发明人:
GUNELL, Jan,VUORIO, Kalle
申请号:
WO2016FI50159
公开号:
WO2016146890(A9)
申请日:
2016.03.15
申请国别(地区):
世界知识产权组织国际局
年份:
2016
代理人:
摘要:
A fluid valve assembly (20) for controlling a single-acting or double-acting actuator comprises a valve body (201) having a central bore (202) with at least one supply port for receiving a supply of fluid under pressure, at least one actuator port (C1,C2) for providing a control fluid pressure to an actuator, and at least one exhaust port (EX1,EX2). The fluid valve assembly comprises at least one pair of counter acting metering edges operationally tied together by a stem (203) movable within said central bore in an axial direction by the pilot force. Each metering edge of each counter-acting pair comprises a mating seat surface (PS1,PS2,PS3,PS4) on the valve body or the stem, and a poppet ring (PR1,PR2, PR3.PR4) supported by a flexible element (SD1,SD2,SD3,SD4) to the valve body or the stem in a manner allowing a relative axial movement of the poppet ring and the supporting valve body or stem also in a closed state of the respective metering edge. The present invention also relates to a process valve position
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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