公开(公告)号：US5056599A

公开(公告)日：1991-10-15

申请号：US480246

申请日：1990-02-15

申请人： Walter B. Comeaux ,  Larry Johnson

发明人： Walter B. Comeaux ,  Larry Johnson

IPC分类号： E21B34/06 ,  E21B37/06 ,  E21B41/02 ,  E21B43/12

CPC分类号： E21B41/02 ,  E21B34/06 ,  E21B37/06 ,  E21B43/123 ,  Y10S166/902 ,  Y10T137/2934

摘要： The invention relates to a valve suitable for use in high-pressure environment for transmitting a treatment fluid from exterior of which is affected by a pre-charged compression gas which keeps the bellows in contracted position and a piston preventing fluid communication between the tubing and the casing through the valve body. The interior of the bellows is affected by the tubing pressure, one half of which is transmitted to the bellows through radial sensing ports, and the other half of which is transmitted to the bellows through the bottom of the piston. When the pressure inside the bellows exceeds the pre-charged pressure, the bellows expands, pulling the piston upwardly and opening fluid communication from the tubing into the casing through the valve. A controlled-size fluid outlet port allows the tubing fluid to exit into the casing.

摘要翻译： 本发明涉及一种适于在高压环境中使用的阀，用于将外部的处理流体从预充气压缩气体中吸收，所述预充气压缩气体将波纹管保持在收缩位置，并且活塞防止管道与管路之间的流体连通 套管通过阀体。 波纹管的内部受到管道压力的影响，其中一半通过径向传感端口传输到波纹管，另一半通过活塞的底部传递到波纹管。 当波纹管内部的压力超过预充电压力时，波纹管膨胀，向上拉动活塞，并通过阀门打开液体从管道进入壳体的流体连通。 可控尺寸的流体出口允许管道流体离开壳体。