Variable gas leak rate valve
    3.
    发明授权
    Variable gas leak rate valve 失效
    可变气体泄漏阀

    公开(公告)号:US3981480A

    公开(公告)日:1976-09-21

    申请号:US534333

    申请日:1974-12-19

    CPC分类号: F16K31/004

    摘要: A variable gas leak rate valve which utilizes a poled piezoelectric element to control opening and closing of the valve. The gas flow may be around a cylindrical rod with a tubular piezoelectric member encircling the rod for seating thereagainst to block passage of gas and for reopening thereof upon application of suitable electrical fields.

    摘要翻译: 一种可变气体泄漏阀,其利用极化压电元件来控制阀的打开和关闭。 气流可以围绕圆柱形杆,其中管状压电元件环绕杆,用于在其上放置以阻止气体的通过并且在施加合适的电场时重新打开气体。