Patent ID: 6786488
Filing Date: 2004-09-07
Classification: F01D,F02C

Abstract:
A sealing structure for preventing a fluid from flowing from a high pressure to a low pressure region between a rotating shaft and a stator, the sealing structure comprising:a stator section having a groove on an inner surface thereof; the rotating shaft having a surface; a ring made of a plurality of portions formed in a circle and disposed in the groove; a seal disposed between a surface of the groove and the ring on the high pressure region configured to prevent a gas from a connecting hole to flow there between; a brush comprised of a plurality of wires attached at an inner surface of the ring, wherein tips of the plurality of wires are disposed toward at least a portion of the inner surface; a spring member which pushes the ring in a direction in which the ring departs from the rotating shaft so as to float the brush from the inner surface of the stator; and the connecting hole which induces fluid pressure which presses the ring in a direction in which the ring approaches the rotating shaft so as to be against a spring force of the spring member and make the brush contact the inner surface of the stator, wherein the sealing structure prevents the fluid from running between the rotating shaft and the stator in an axial direction of the rotating shaft and has a clearance from the surface of the rotating shaft.