Patent ID: 9464535
Filing Date: 2016-10-11
CPC Classification: F01D,F02C,F05D

Claim Text:
1. A stationary part sealing structure provided between a first stationary part and a second stationary part, the first stationary part being provided outside the second stationary part, and partitioning spaces under different pressures, the stationary part sealing structure comprising: a first insertion groove formed annularly across a circumferential direction in a wall surface, which opposes the second stationary part, of the first stationary part, the first insertion groove having a first groove part and a pair of first projections projecting respectively from two side faces of the first groove part so as to narrow an opening of the first groove part; a second insertion groove formed annularly across a circumferential direction in a wall surface, which opposes the first insertion groove, of the second stationary part, the second insertion groove having a second groove part and a pair of second projections projecting respectively from two side faces of the second groove part so as to narrow an opening of the second groove part; and a platy annular sealing member having an outer diameter side end inserted in the first insertion groove and an inner diameter side end inserted in the second insertion groove, wherein the sealing member is in contact with one of the projections in each of the first and second insertion grooves and not in contact with the other projections in each of the first and second insertion grooves due to a pressure difference between the partitioned spaces, and wherein one of an opening distance between the first projections and an opening distance a between the second projections is longer than the other opening distance.