发明授权
US06726213B2 Bi-direction rotatable face seal with spiral grooves 有权
双向旋转面密封带螺旋槽

  • 专利标题: Bi-direction rotatable face seal with spiral grooves
  • 专利标题(中): 双向旋转面密封带螺旋槽
  • 申请号: US10046774
    申请日: 2002-01-17
  • 公开(公告)号: US06726213B2
    公开(公告)日: 2004-04-27
  • 发明人: Yuming Wang
  • 申请人: Yuming Wang
  • 主分类号: F16J1534
  • IPC分类号: F16J1534
Bi-direction rotatable face seal with spiral grooves
摘要:
A bi-direction rotatable face seal with spiral grooves is provided comprising: a rotating ring with a sealing face sealed and fixed on a rotary shaft; a stationary ring with a sealing face mounted in a casing, which is sealed and axially aligned by means of an elastomeric O-ring, a thrust ring, springs and anti-rotating pins; the sealing face of the stationary ring is pushed into engagement with the sealing face of the rotating ring to form a sealing interface; sealing fluid is located on high pressure side of the sealing interface; the rotating ring can rotate relative to the stationary ring in bi-direction without contact. The spiral groove groups near a high pressure side are arranged on at least one sealing face of the rotating ring and the stationary ring; the equally-spaced spiral groove groups with segment lands distribute in circumferential direction; each spiral groove group is composed of one radial fluid feed-in groove and at least three rows of spiral grooves with spiral lands arranged in radial direction at equal pitch; the spiral grooves with spiral lands distribute symmetrically or quasi-symmetrically on the left side and the right side of the radial fluid feed-in groove, which can pump the sealing fluid downstream in bi-directional rotation; a non-grooved annular flat clam nearby low pressure side is arranged on the sealing face acting as a flow restrict dam and static sealing area.
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