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公开(公告)号:US5156410A
公开(公告)日:1992-10-20
申请号:US623816
申请日:1991-01-04
Applicant: Jorgen Hom , Roy Edlund
Inventor: Jorgen Hom , Roy Edlund
CPC classification number: F16F9/36 , F15B1/24 , F16J15/3244 , F16J15/56 , F05C2225/04 , F15B2201/20 , F15B2201/205 , F15B2201/312 , F15B2201/3157 , F15B2201/61 , Y10S277/91
Abstract: For sealing between two opposed surfaces of two machine elements (1, 2) a combination seal is provided to be fitted into an open groove (3) in one of the machine elements (2). The seal comprises an electomeric expansion ring (4, 5) at the bottom of the groove (3), an intermediate ring (6) made of a viscous-elastic material, e.g. PTFE and having a sealing surface (6b) to contact the mating machine element (2), and an elastomeric outer ring (8) fitted into a separate groove (7) in the sealing surface (6b) of the intermediate ring. Especially in cases where the seal is to separate fluid and gas an improved distribution of the contact pressure at the sealing surface (6b) and also an effective hydrodynamic relief of the outer ring (8) preventing its exposure to injurious pressures and subsequent damage is obtained by designing the intermediate ring (6) at the ends of the sealing surface (6b) with comparatively sharp corners (16, 17), the parts of the sealing surface between these corners and the separate groove (7) forming conical faces (14, 15) which at a narrow slit angle converge towards the separate groove (7). The intermediate ring may also be biassed by the two expansion rings (4, 5) placed on each side of the separate groove (7).
Abstract translation: PCT No.PCT / DK88 / 00113 Sec。 371日期1991年1月4日 102(e)日期1991年1月4日PCT提交1988年7月7日PCT公布。 出版物WO90 / 00693 日期1990年1月25日。为了在两个机器元件(1,2)的两个相对表面之间进行密封,提供组合密封件以装配到机器元件(2)之一中的开口槽(3)中。 密封件包括在凹槽(3)的底部的电气膨胀环(4,5),由粘性弹性材料制成的中间环(6) PTFE并具有与配合机构元件(2)接触的密封表面(6b)和装配到中间环的密封表面(6b)中的单独凹槽(7)中的弹性体外圈(8)。 特别是在密封件分离流体和气体的情况下,获得了密封表面(6b)处的接触压力的改进分布以及外环(8)的有效的流体动力释放以防止其暴露于有害压力并且随后的损坏 通过在密封表面(6b)的端部设置具有较为尖锐的角部(16,17)的中间环(6),这些拐角处的密封表面的部分和形成圆锥面(14, 15),窄缝角度朝着分离槽(7)会聚。 中间环也可以通过放置在分离槽(7)的每一侧上的两个膨胀环(4,5)而偏置。
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公开(公告)号:US4709932A
公开(公告)日:1987-12-01
申请号:US9298
申请日:1987-01-30
Applicant: Roy Edlund , Jorgen Hom
Inventor: Roy Edlund , Jorgen Hom
IPC: F16J15/18 , F16J15/3204 , F16J15/3208 , F16J15/3232 , F16J15/56 , F16J15/32
CPC classification number: F16J15/56 , F16J15/3204 , F16J15/3208 , F16J15/3232
Abstract: In a double wiper arrangement, a wiper ring (5) and a stressing ring (6) are arranged in a groove (4) of a width which is only little larger than the width of the wiper ring (5). The stressing ring (6) loads the wiper ring (5) through a shoulder and an inclined circumferential surface (14) in such a manner that the wiper ring (5) is retained in contact with the flank (17) of the groove (4) on the high-pressure end and that a contact pressure is produced along a flat surface portion (7) which pressure diminishes at least nearly linearly along the said flat surface portion, starting from its inner end, but which is still defined at the outer end thereof.
Abstract translation: 在双擦拭器布置中,擦拭环(5)和应力环(6)布置在宽度仅略大于擦拭环(5)的宽度的凹槽(4)中。 应力环(6)通过肩部和倾斜圆周表面(14)将擦拭环(5)装载,使得擦拭环(5)保持与凹槽(4)的侧面(17)接触 ),并且沿着平坦表面部分(7)产生接触压力,所述平坦表面部分(7)的压力从其内端开始沿着所述平坦表面部分至少几乎线性地减小,但是仍然限定在外部 结束。
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