专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2004072433A3 DOWNHOLE TRACTOR WITH IMPROVED VALVE SYSTEM 审中-公开
标题翻译：具有改进阀门系统的卧式牵引车
公开(公告)号：WO2004072433A3
公开(公告)日：2004-12-02
申请号：PCT/US2004004171
申请日：2004-02-10
申请人： WESTERN WELL TOOL INC , MOCK PHILLIP A , KRUEGER ERNST , BLOOM DUANE , MOORE N BRUCE
发明人： MOCK PHILLIP A , KRUEGER ERNST , BLOOM DUANE , MOORE N BRUCE
IPC分类号： E21B4/18 , E21B23/00
CPC分类号： E21B4/18 , E21B2023/008
摘要： A hydraulically powered tractor 100 adapted for advancement through a borehole including an elongate body, aft and forward gripper assemblies 104, 106, and a valve control assembly 102 housed within the elongate body. The aft and forward gripper assemblies 104, 106 are adapted for selective engagement with the inner surface of the borehole. The valve control assembly 102 includes a gripper control valve 312 for directing pressurized fluid to the aft and forward gripper assemblies 104, 106. The valve control assembly 102 also includes a propulsion control valve 310 for directing fluid to an aft or forward power chamber for advancing the body relative to the actuated gripper assembly. Aft and forward mechanically actuated valves 322, 324 may be provided for controlling the position of the gripper control valve 312 by detecting and signaling when the body has completed an advancement stroke relative to an actuated gripper assembly. Aft and forward sequence valves 314, 316 may be provided for controlling the propulsion control valve 310 by detecting when the gripper assemblies become fully actuated. Furthermore, a pressure relief valve 306 is preferably provided along an input supply line 302, 352 for limiting the pressure of the fluid entering the valve control assembly 102.
摘要翻译：液压动力拖拉机100适于通过钻孔前进，包括细长主体，后部和前部夹持器组件104,106以及容纳在细长主体内的阀门控制组件102。后部和前部夹持器组件104,106适于与钻孔的内表面选择性地接合。阀控制组件102包括用于将加压流体引导到尾部和向前夹持器组件104,106的夹持器控制阀312.阀控制组件102还包括推进控制阀310，用于将流体引导到前进或后退的动力室，用于前进主体相对于致动的夹持器组件。可以设置后向和向前的机械致动阀322,324，用于通过检测并发出身体相对于致动的夹持器组件完成前进行程的信号来控制夹持器控制阀312的位置。可以提供后向顺序阀314,316，用于通过检测夹具组件何时完全致动来控制推进控制阀310。此外，优选地，沿着输入供应管线302,352设置减压阀306，以限制进入阀控制组件102的流体的压力。

IPRDB

热门服务

关于我们

友情链接

联系方式