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    • 1. 发明授权
    • Face seal with automatic face convergence means
    • 具有自动脸部收敛手段的面部密封
    • US4722534A
    • 1988-02-02
    • US810137
    • 1985-12-18
    • Robert S. Wentworth
    • Robert S. Wentworth
    • F16J15/34
    • F16J15/3464
    • A controllable mechanical seal for sealing a rotating body relative to a housing of a fluid device. The mechanical seal includes a pair of seal rings supported in juxtaposed relation in said housing. Each seal ring has a cylindrical outer surface and a radial end sealing face which, at a given operating condition of the machine, has a predetermined optimum convergence angle relative to the other seal ring face. The sealing faces are yieldably biased into contact with one another to define a dynamic seal there between. A seal ring support member is telescopically arranged about the outer cylindrical surface of one of said ring such that exposed surface area end regions of the cylindrical surface of the support ring are subjected to selectable differential pressures which cause the associated seal ring to distort thereby causing the seal face of the associated ring to assume a select angle of convergence relative to the seal face of the other seal ring. A sensor may be provided for automatically controlling the angle of convergence between the seal faces as a function of machine operation.
    • 用于将旋转体相对于流体装置的壳体密封的可控机械密封。 机械密封件包括在所述壳体中以并列关系支撑的一对密封环。 每个密封环具有圆柱形的外表面和径向端密封面,其在机器的给定操作条件下相对于另一个密封环面具有预定的最佳会聚角。 密封面可屈服地偏置成彼此接触以在其间限定动态密封。 密封环支撑构件围绕所述环中的一个的外圆柱形表面可伸缩地布置,使得支撑环的圆柱形表面的暴露的表面区域端部区域受到可选择的差压,这导致相关联的密封环变形,从而导致 相关联的环的密封面相对于另一个密封环的密封面采取收敛的选择角。 可以设置传感器,用于根据机器操作来自动控制密封面之间的会聚角度。
    • 2. 发明授权
    • Pressure balanced seal
    • 压力平衡密封
    • US4557489A
    • 1985-12-10
    • US592494
    • 1984-03-23
    • Robert S. Wentworth
    • Robert S. Wentworth
    • E21B17/05E21B21/02F16J15/34F16L27/08
    • F16J15/3468E21B21/02F16L27/0804Y10S277/928
    • A pressure balanced mechanical seal, especially adaptable for use in a swivel in an oil well drilling arrangement comprising a pair of relatively rotatable seal rings constructed of silicon carbide or tungsten carbide each received in a cavity defined by a cylindrical and a radial wall in the respective housing for the ring with the inner cylindrical surface of each exposed to high pressure, high temperature drilling mud and with means to communicate drilling mud to the outer cylindrical surfaces thereof, and means for balancing the axial forces on the rings and to insure sufficient axial forces for perfecting the seal. Tensional and compressive forces on the rings are minimized insuring reasonable life to the seal, far in excess of that in the conventional packings now used in the oil drilling system.
    • 一种压力平衡的机械密封,特别适用于油井钻井装置中的旋转装置,包括由碳化硅或碳化钨构成的一对相对可旋转的密封环,每个碳化硅或碳化钨各自容纳在由相应的圆柱形和径向壁限定的空腔中 用于环的壳体,其每个的内圆柱表面暴露于高压,高温钻井泥浆以及将钻井泥浆与其外圆柱形表面相通的装置,以及用于平衡环上的轴向力并确保足够的轴向力 用于完善印章。 密封圈上的拉伸和压缩力最小化,确保了密封件的合理使用寿命,远远超过现在在石油钻井系统中使用的常规密封件。