公开(公告)号：US09359837B2

公开(公告)日：2016-06-07

申请号：US14650314

申请日：2013-12-05

Applicant: MHWIRTH AS

Inventor： Lars Poehner

IPC: E21B19/00 ,  E02B17/08 ,  E21B19/09

CPC classification number: E21B19/006 ,  E02B17/0809 ,  E21B19/002 ,  E21B19/09

Abstract: A hydraulic cylinder unit for connection to a wire line riser tensioner system includes a hydraulic cylinder comprising a cylinder piston separating a first cylinder chamber from a second cylinder chamber. A low pressure tank is arranged as a closed cylinder. A first conduit is inserted into the closed cylinder and provides a fluid communication between the low pressure tank and the first cylinder chamber. A second conduit provides a fluid communication between a high pressure fluid reservoir and the second cylinder chamber. A feedback conduit provides a fluid communication between the first cylinder chamber and the second cylinder chamber. A valve element comprising at least one valve is configured to be in a fluid communication with the at least one first conduit and the at least one feedback conduit. The valve element is configured to provide a reversible switching between a first alternative configuration and a second alternative configuration.

Abstract translation: 用于连接到线路提升管张紧器系统的液压缸单元包括液压缸，其包括将第一气缸室与第二气缸室分离的气缸活塞。 低压罐被设置为封闭的气缸。 第一导管插入封闭的气缸中，并在低压罐和第一气缸室之间提供流体连通。 第二导管提供高压流体储存器和第二气缸室之间的流体连通。 反馈管道提供第一气缸室和第二气缸室之间的流体连通。 包括至少一个阀的阀元件构造成与所述至少一个第一管道和所述至少一个反馈管道流体连通。 阀元件构造成在第一替代配置和第二备选配置之间提供可逆切换。