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END SURFACE CONTACT TYPE MECHANICAL SEAL

机译:端面接触型机械密封

摘要

PROBLEM TO BE SOLVED: To provide an end surface contact type mechanical seal for exhibiting the excellent seal function even in any of normal operation time and back pressure operation time.;SOLUTION: This end surface contact type mechanical seal: includes a fixed sealing ring (2) fixed to a seal case and a movable sealing ring (6) movably held by a rotary shaft (3) via a spring holding ring (4) and an O ring (5); has a relationship of d1D2, d2D1, 0.15≤(d2-d1)/(D2-D1)≤0.85 and 0.95≤(d1+d2)/(D1+D2)≤1.05 among an inner diameter D1 and an outer diameter D2 of relative rotation sliding contact parts of both sealing rings (2 and 6), a diameter d1 of a first seal surface (43a) and a diameter d2 of a second seal surface (65a); and is constituted so that the balance ratio becomes 0.6-0.9 in any of a case where a first fluid region (A) has higher pressure than a second fluid region (B) and a case where the second fluid region (B) has higher pressure than the first fluid region (A).;COPYRIGHT: (C)2013,JPO&INPIT
机译:解决的问题:提供一种端面接触式机械密封,即使在正常操作时间和反压操作时间内也能表现出出色的密封功能;解决方案:此端面接触式机械密封:包括一个固定密封环( 2)通过弹簧保持环(4)和O形环(5)固定在密封盒上,并通过旋转轴(3)可动地保持在可动密封环(6)上。内径D1与d之间的关系为d1 <D2,d2> D1、0.15≤(d2-d1)/(D2-D1)≤0.85、0.95≤(d1 + d2)/(D1 + D2)≤1.05。两个密封环(2、6)的相对旋转滑动接触部的外径D2,第一密封面(43a)的直径d1和第二密封面(65a)的直径d2。并且构成为在第一流体区域(A)的压力高于第二流体区域(B)的压力的情况下以及第二流体区域(B)的压力更高的情况下的平衡比变为0.6-0.9。比第一个流体区域(A)。;版权:(C)2013,JPO&INPIT

著录项

  • 公开/公告号JP2013057353A

    专利类型

  • 公开/公告日2013-03-28

    原文格式PDF

  • 申请/专利权人 NIPPON PILLAR PACKING CO LTD;

    申请/专利号JP20110195575

  • 发明设计人 OKUMACHI EIJI;KIKUYAMA TAKANORI;

    申请日2011-09-08

  • 分类号F16J15/36;

  • 国家 JP

  • 入库时间 2022-08-21 16:58:28

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