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    • 6. 发明申请
    • VALVE ACTUATOR
    • 阀门执行器
    • WO2003085302A1
    • 2003-10-16
    • PCT/US2003/009859
    • 2003-04-01
    • CANRIG DRILLING TECHNOLOGY, LTD.YORK, Lemuel, T.RICHARDSON, Allan, S.KUTTEL, Beat
    • YORK, Lemuel, T.RICHARDSON, Allan, S.KUTTEL, Beat
    • F16K31/143
    • F15B15/065F16K31/122F16K31/54
    • A valve actuator (10) is provided in which a complementary set of pinions (18), each driven by a pair of racks (16), are located on opposite sides of the valve (11) to be actuated. The racks (16) are part of an annular bearing assembly (25) and are coupled to one another through a hydraulic cylinder (30) or some other displacement device. A pinion-retaining sleeve (20) is provided to shield the racks (16) and pinions (18) and prevents parts of the valve actuator (10) from being thrown in operation. The piston retaining sleeve (20) may include a maintenance aperture for installing or repairing a pinion (18) and a second aperture for viewing the rotation of the pinion (18). The bearing assemblies (25) each include a bearing housing (26) and a bearing retainer (28) that cooperate to shield the bearing assembly (25).
    • 提供了一种阀致动器(10),其中由一对机架(16)驱动的互补的一组小齿轮(18)位于阀(11)的相对侧上以被致动。 机架(16)是环形轴承组件(25)的一部分,并且通过液压缸(30)或一些其它排量装置彼此联接。 提供小齿轮保持套(20)以屏蔽齿条(16)和小齿轮(18),并防止阀致动器(10)的部件投入运转。 活塞保持套(20)可以包括用于安装或修理小齿轮(18)的维护孔和用于观察小齿轮(18)的旋转的第二孔。 轴承组件(25)各自包括轴承壳体(26)和协作以屏蔽轴承组件(25)的轴承保持器(28)。