| 摘要 |
PROBLEM TO BE SOLVED: To provide a stator part seal structure capable of parting spaces of different pressures and restricting leakage of vapor even in the case of occurrence in axial and radial positional displacements.SOLUTION: A stator part seal structure 10 of this preferred embodiment comprises: an insertion groove 20 having a groove part 21 and protrusions 25, 26 formed in an annular shape in a circumferential direction at a wall surface 111a of an outer casing 111 so as to protrude from each of both side surfaces of the groove part 21 to narrow an opening part 22 of the groove part 21; an insertion groove 30 formed at a wall surface 110a of an inner casing 110 opposing against the insertion groove 20 in an annular shape in a circumferential direction having a groove part 31 and protrusions 35,36 that protrude from each of both side surfaces of the groove part 31 so as to narrow an opening part 32 of the groove par 31; and a flat plate annular seal member 40 having an outer diameter end part 41 inserted into the insertion groove 20 and having an inner diameter end part 42 inserted into the insertion groove 30. The seal member 40 is pushed against the protrusion 26 and the protrusion 36 due to a pressure difference between the partitioned spaces. |
