公开(公告)号：US5890450A

公开(公告)日：1999-04-06

申请号：US886589

申请日：1997-07-01

申请人： Robert S. Hamell ,  Harold B. Skeels ,  Christopher D. Bartlett ,  Christopher E. Cunningham

发明人： Robert S. Hamell ,  Harold B. Skeels ,  Christopher D. Bartlett ,  Christopher E. Cunningham

IPC分类号： F16K37/00

CPC分类号： F16K37/0008

摘要： The present invention is directed to a valve position indicator for indicating an open or closed position of a valve having a valve stem, the valve position indicator comprising a body adapted to be mounted to a subsea xmas tree structure, a traveling block movably connected to the body by at least one guide bolt, the traveling block including a threaded hole for engaging a threaded extension shaft which is coupled to the valve stem, a rigid tube connected to the body and having first and second open ends, and a coiled spring member having one end connected to the traveling block and the other end extending through the first end of the rigid tube, wherein the extension of the spring member beyond the second end by a predetermined amount provides a visual indication that the valve is in its open or closed position, whereby movement of the traveling block in response to actuation of the valve will push or pull the spring member through the tube to provide the desired visual indication.

摘要翻译： 本发明涉及一种用于指示具有阀杆的阀的打开或关闭位置的阀位置指示器，所述阀位置指示器包括适于安装到海底圣诞树结构的主体，所述主体可移动地连接到 主体由至少一个导向螺栓组成，所述移动块包括用于接合连接到所述阀杆的螺纹延伸轴的螺纹孔，连接到所述主体并具有第一和第二开口端的刚性管，以及螺旋弹簧构件， 一端连接到移动块，另一端延伸穿过刚性管的第一端，其中弹簧构件超出第二端预定量的延伸提供了阀处于其打开或关闭位置的视觉指示 由此，响应于阀的致动而移动块的移动将推动或拉动弹簧构件通过管以提供期望的视觉指示。