公开(公告)号：US20120121411A1

公开(公告)日：2012-05-17

申请号：US13292131

申请日：2011-11-09

申请人： Akira ENDO ,  Kazuyuki YAMAGUCHI ,  Yohei MAGARA ,  Toyomi YOSHIDA ,  Michiyuki TAKAGI ,  Kenichi MURATA ,  Takeshi KUDO

发明人： Akira ENDO ,  Kazuyuki YAMAGUCHI ,  Yohei MAGARA ,  Toyomi YOSHIDA ,  Michiyuki TAKAGI ,  Kenichi MURATA ,  Takeshi KUDO

IPC分类号： F01D11/00 ,  F16J15/447

CPC分类号： F01D11/02 ,  F05D2260/96

摘要： A labyrinth seal is provided that can suppress the occurrence of an unequal pressure pattern in the seal, suppress unstable vibration of a rotating shaft and ensure sealing performance.The labyrinth seal includes a seal ring 13 and a plurality of seal fins 11. Ring-like cavities 12 are defined on the outer circumference of the rotating shaft 2 with the seal ring 13 and the seal fins 11. The ring-like cavities 12 suppress a leakage flow LS moving along the outer circumference of the rotating shaft 2. Void portions 14 are each provided on the outer circumferential side of the cavity 12 in the seal ring 13 so as to extend in the circumferential direction of the rotating shaft 2 and communicate with the cavity 12 at circumferential intervals to temporarily relieve a leakage flow from inside the cavity in the circumferential direction.

摘要翻译： 提供了一种迷宫式密封件，可以抑制密封件中不均匀的压力图案的发生，抑制旋转轴的不稳定的振动并确保密封性能。 迷宫式密封件包括密封环13和多个密封翅片11.环形空腔12由密封环13和密封翅片11限定在旋转轴2的外圆周上。环状空腔12抑制 泄漏流LS沿着旋转轴2的外周移动。空隙部分14分别设置在密封环13中的空腔12的外周侧上，以沿着旋转轴2的圆周方向延伸并且连通 空腔12以周向间隔暂时缓解在圆周方向上的空腔内的泄漏流。