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    • 44. 发明授权
    • Mechanical end face seal ring having a compliant seal face
    • 机械端面密封环,具有柔顺密封面
    • US06299173B1
    • 2001-10-09
    • US09415845
    • 1999-10-12
    • Wei-Tang Lai
    • Wei-Tang Lai
    • F16J1534
    • F16J15/3468F16J15/3472
    • A mechanical end face seal includes one seal ring having two elements, a seal face extension portion immediately adjacent a sealing face and a seal ring body removed from the sealing face. Each of the ring elements has a radial outer diameter dimension and a radial inner dimension. The seal face extension portion is defined by an annular gap separating the seal ring body from the seal face extension portion. The annular gap opens out onto the high-pressure side of the seal. The axial thickness of the seal face extension portion is much smaller than the radial dimension of the sealing face. The seal face extension portion is connected to the thicker seal ring body by means of a thin connecting “neck”, which has a small radial dimension than the radial dimension of the sealing face. Preferably, the radial dimension of the neck has a ratio relative to the radial width of the ring sealing face between about 0.10 to about 0.70, more preferably about 0.25 to about 0.60, and most preferably about 0.35 to about 0.45. The relative ratio of the axial thickness of the seal face extension portion to the radial width of the second sealing face is in a preferable range of from about 0.03 to about 0.60, in a more preferable range of from about 0.05 to about 0.50, and in an optimal range of from about 0.08 to about 0.15.
    • 机械端面密封件包括具有两个元件的一个密封环,紧邻密封面的密封面延伸部分和从密封面移除的密封环体。 每个环形元件具有径向外径尺寸和径向内部尺寸。 密封面延伸部分由将密封环体与密封面延伸部分分开的环形间隙限定。 环形间隙打开到密封件的高压侧。 密封面延伸部分的轴向厚度远小于密封面的径向尺寸。 密封面延伸部分通过薄的连接“颈部”连接到较厚的密封环体,颈部的径向尺寸小于密封面的径向尺寸。 优选地,颈部的径向尺寸相对于环密封面的径向宽度的比率在约0.10至约0.70之间,更优选约0.25至约0.60,最优选约0.35至约0.45。 密封面延伸部的轴向厚度与第二密封面的径向宽度的相对比在约0.03至约0.60的优选范围内,更优选的范围为约0.05至约0.50,并且在 约0.08至约0.15的最佳范围。