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    • 3. 发明授权
    • Full opening and reclosable explosion vent apparatus
    • 全开式和重合闸式防爆设备
    • US07798893B2
    • 2010-09-21
    • US11335082
    • 2006-01-19
    • Tom EijkelenbergGuido Dom
    • Tom EijkelenbergGuido Dom
    • F16K17/14E04H9/00F16K17/40
    • F16K17/36E05B65/102E05C19/00F16K15/03Y10T137/1677Y10T137/1789Y10T137/8811
    • Explosion vent apparatus is provided, which includes a vent support unit defining a vent opening adapted to be aligned with an area to be protected from an overpressure condition, a vent panel movably mounted on the support unit in a normal closed position blocking the outlet and movable through a first displacement away from its closed position to a first overpressure-relieving position upon application of an overpressure of one magnitude of pressure while allowing movement of the vent panel through a second and greater displacement to a second overpressure-relieving position upon application of a higher overpressure. The vent panel does not deform or rupture upon opening, and recloses after pressure relief, either under spring pressure when opened under a lower first pressure, or by a fluid actuated reclosing mechanism upon full opening of the vent panel under a higher second pressure.
    • 提供爆炸口装置,其包括通气支撑单元,其限定通气开口,其适于与要被保护的区域对准以防过压状态;通气面板,其可移动地安装在支撑单元上,在通常的关闭位置阻止出口并且可移动 通过在施加一个大小的压力的过压时从其关闭位置移动到第一过压释放位置,同时允许通气面板通过第二和更大的位移移动到第二过压释放位置 更高的超压。 通气面板在打开时不会变形或破裂,并且在压力释放之后重新关闭,无论是在较低的第一压力下打开时的弹簧压力下,还是在更高的第二压力下完全打开通气面板时,通过流体致动的重合闸机构。
    • 5. 发明授权
    • Releasable coupling
    • 可释放耦合
    • US4601492A
    • 1986-07-22
    • US435458
    • 1982-10-20
    • Flint R. George
    • Flint R. George
    • E21B17/06F16L37/08
    • E21B17/06Y10T137/1677
    • A releasable coupling has opposite ends adpated to be connected into a tool string or tubing string and run downhole into a borehole. A sealing member is passed down through the tubing string and allowed to become seated within the axial passageway of the releasable coupling. Pressure is applied through the axial passageway above the sealing member whereupon the differential in pressure effected across the sealing member is also effected across a slidable piston reciprocatingly received within the releasable coupling. The piston moves into a position which enables a male member to be released and separated from a female member. When the male and female members are released and separated from one another, the lower part of the tubing string is disconnected from the upper part of the tubing string.
    • 可释放的联接器具有相对的端部,其连接到工具串或管柱中并且在井下进入井眼。 密封构件向下通过管柱并允许其在可释放联接件的轴向通道内就位。 通过密封构件上方的轴向通道施加压力,于是穿过密封构件的压力差也跨越可释放联接器中往复运动的滑动活塞进行。 活塞移动到使得阳构件能够从阴构件释放和分离的位置。 当阳和阴构件彼此分离并分离时,管柱的下部与管柱的上部断开连接。
    • 6. 发明授权
    • Inflatable packer assembly with control valve
    • 带控制阀的充气封隔器组件
    • US4260164A
    • 1981-04-07
    • US48977
    • 1979-06-15
    • Eugene E. BakerErnest E. Carter, Jr.
    • Eugene E. BakerErnest E. Carter, Jr.
    • E21B33/127E21B33/12
    • E21B33/127Y10T137/1632Y10T137/1677Y10T137/1782Y10T137/7728Y10T137/87917
    • An inflatable packer assembly includes a cylindrical mandrel with a cylindrical valve body concentrically disposed about the mandrel. The valve body includes an inlet communicating with an interior of the mandrel and an outlet for directing fluid to an inflatable element of the packer assembly. First and second axial bores, containing first and second pistons, respectively, are disposed in said valve body and communicate with an end surface thereof. The first bore also communicates with said inlet. A first port connects the first and second bores. A second port connects the second bore and the outlet. The first piston is held in a first position blocking said first port until a pressure differential across the first piston reaches a first level at which the first piston is released and is moved to a second position allowing fluid communication between the inlet and the first port. The second piston is held in a first position allowing fluid communication between said first and second ports until a pressure differential across said second piston reaches a second level, higher than said first level, at which said second piston is released and is moved to a second position blocking said second port.
    • 充气封隔器组件包括圆柱形心轴,其具有围绕心轴同心设置的圆柱形阀体。 阀体包括与心轴的内部连通的入口和用于将流体引导到封隔器组件的可充气元件的出口。 分别包含第一和第二活塞的第一和第二轴向孔设置在所述阀体中并与其端表面连通。 第一孔还与所述入口连通。 第一口连接第一和第二孔。 第二个端口连接第二个孔和出口。 第一活塞被保持在阻挡所述第一端口的第一位置,直到穿过第一活塞的压力差达到第一水平,在第一水平处第一活塞被释放,并且移动到允许入口和第一端口之间的流体连通的第二位置。 第二活塞被保持在第一位置,允许所述第一和第二端口之间的流体连通,直到跨过所述第二活塞的压差达到高于所述第二水平的第二水平,在所述第一水平处所述第二活塞被释放并被移动到第二位置 位置阻塞所述第二端口。