Hydraulic fail-safe valve operator
    8.
    发明授权
    Hydraulic fail-safe valve operator 失效
    液压失效安全阀操作器

    公开(公告)号:US3750404A

    公开(公告)日:1973-08-07

    申请号:US3750404D

    申请日:1972-01-17

    申请人: HYDRIL CO

    发明人: MURMAN F HIATT L

    CPC分类号: E21B33/0355 Y10S60/903

    摘要: The invention relates generally to the control of sub-surface oil tools. A fail-safe operator for such tools is characterized as hydraulically operated and adapted to be connected in a system wherein hydraulic fluid is not wasted to the sea, in order to obviate contamination problems.

    摘要翻译: 本发明一般涉及地下油工具的控制。 用于这种工具的故障安全操作器的特征在于液压操作并且适于连接在其中液压流体不被浪费到海洋的系统中,以便消除污染问题。