公开(公告)号：US3989223A

公开(公告)日：1976-11-02

申请号：US429434

申请日：1973-12-28

申请人： Joseph A. Burkhardt ,  Thomas W. Childers ,  Roger J. Koerner

发明人： Joseph A. Burkhardt ,  Thomas W. Childers ,  Roger J. Koerner

IPC分类号： F16K31/163 ,  F16K31/12

CPC分类号： F16K31/163 ,  Y10T74/18592

摘要： An hydraulically operated failsafe valve actuator for use on non-rising valve stems, particularly in a subsea environment. A rotatable shaft is connected to the non-rising valve stem. In one embodiment the valve is actuated to open by a fluid pressure operated motor acting against the bias of a spring. Means connects means linearly movable along the shaft and converts the linear movement of the linear movable means to rotary movement of the shaft. Spring means moves the linearly movable means in one direction to cause the shaft to rotate in one direction. Fluid pressure means, including a fluid pressure operated motor, rotates the shaft in an opposite direction to cause the linearly movable means to move in an opposite direction along the shaft. In another embodiment the valve is actuated to open by a fluid pressure operated piston acting against the bias of the spring. The piston is mounted on the rotatable shaft and moves linearly along the shaft to cause the shaft to rotate. Spring means moves the piston in one linear direction to rotate the shaft in one direction. Fluid pressure moves the piston in an opposite direction to rotate the shaft in an opposite direction.

摘要翻译： 一种液压操作的故障安全阀执行器，用于非上升阀杆，特别是在海底环境中。 可旋转的轴连接到非上升阀杆。 在一个实施例中，阀被致动以由抵抗弹簧偏压的流体压力操作的马达打开。 装置连接装置可以沿着轴线性移动，并且将线性可移动装置的线性运动转换成轴的旋转运动。 弹簧意味着沿一个方向移动线性移动装置以使轴在一个方向上旋转。 包括流体压力操作的马达的流体压力装置使轴沿相反的方向旋转，以使直线运动装置沿着相反的方向运动。 在另一个实施例中，阀被致动以由抵抗弹簧偏压的流体压力操作的活塞打开。 活塞安装在可旋转的轴上，并沿轴线直线移动，使轴旋转。 弹簧意味着将活塞沿一个直线方向移动，以使轴在一个方向上旋转。 流体压力使活塞沿相反方向移动，以使轴沿相反方向旋转。