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    • 9. 发明申请
    • Maintenance and Emergency Run Secondary Seal
    • 维护和紧急运行二次密封
    • US20130113163A1
    • 2013-05-09
    • US13290435
    • 2011-11-07
    • George ThomsonGuojun RenKenneth OgleRoberto Garcia
    • George ThomsonGuojun RenKenneth OgleRoberto Garcia
    • F16J15/40F16J15/16
    • F16J15/008
    • A maintenance and emergency run secondary seal mountable to a rotatable shaft is described. The seal includes a housing; a sealing ring having a double-tapered receiving channel located between two exterior surfaces and an interior wear surface; a lantern ring having a double-tapered profile for enabling engagement within the receiving channel of the sealing ring to form an air chamber between the sealing ring and the lantern ring; and an arrangement for directing and controlling pressurized air to the air chamber. The operating positions for the sealing ring are: where the sealing ring is spaced from the shaft, where a portion of the interior wear surface of the sealing ring is closed-in on the shaft to enable an emergency run secondary seal to permit shaft rotation and where the sealing ring is in full contact with the shaft to enable a static seal.
    • 描述了可安装到可旋转轴的维护和应急运行二次密封件。 密封件包括壳体; 密封环,其具有位于两个外表面和内部磨损表面之间的双锥形接收通道; 具有双锥形轮廓的灯笼环,用于能够在密封环的接收通道内接合,以在密封环和灯笼环之间形成空气室; 以及用于将加压空气引导和控制到空气室的装置。 密封环的操作位置是:密封环与轴间隔开的位置,其中密封环的内部磨损表面的一部分被封闭在轴上,以使紧急运行的二次密封件允许轴旋转, 其中密封环与轴完全接触以实现静态密封。