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    • 3. 发明授权
    • Seal Device
    • 密封装置
    • US07681889B2
    • 2010-03-23
    • US11658018
    • 2005-07-20
    • Hajime TsuboiYuji Igawa
    • Hajime TsuboiYuji Igawa
    • F16J15/34
    • F16J15/344
    • A seal device where, even if a fluid to be sealed is under high pressure, a seal surface of a seal ring is prevented from producing heat and the seal surface is prevented from wearing. The seal device has a first seal ring (5) having a first seal surface (5A) at an end surface and having, on the opposite side of the first seal surface (5A), a first pressing surface (5B) formed on an inclined surface: a first seal retainer (51) having a first inner periphery fixation surface (51A) facing the first pressing surface (5B); a first elastic seal ring (2) for pressing the first pressing surface (5B) in an axial direction by elastic force produced by sealed compression between the first pressing surface (5B) and the first inner periphery fixation surface (51A); a second seal ring (15) in tight contact with the first seal surface (5A) of the first seal ring (5) and having a second seal surface (15A) slidable relative to the first seal surface (5A); and a second seal retainer (61) in which the second seal ring (15) is sealedly held. The first pressing surface (5B) is formed as an inclined surface where the ratio H/L is in the range not exceeding 0.5, with H being the width in a radial direction, L the length in the axial direction of the first pressing surface (5B).
    • 一种密封装置,即使被密封的流体处于高压下,也能够防止密封环的密封面产生热量,防止密封面磨损。 密封装置具有在端面具有第一密封面(5A)的第一密封环(5),并且在第一密封面(5A)的相反侧具有形成在倾斜的第一密封面 表面:具有面向第一按压面(5B)的第一内周固定面(51A)的第一密封保持架(51) 第一弹性密封环(2),用于通过在第一按压表面(5B)和第一内周固定表面(51A)之间的密封压缩产生的弹力在轴向方向上按压第一按压表面(5B); 与第一密封环(5)的第一密封表面(5A)紧密接触并具有相对于第一密封表面(5A)可滑动的第二密封表面(15A)的第二密封环(15)。 以及密封保持第二密封环(15)的第二密封保持器(61)。 第一按压面(5B)形成为比例H / L在不超过0.5的范围内的倾斜面,H是径向宽度,L是第一按压面的轴向长度 5B)。