Patent ID: 7186078
Filing Date: 2007-03-06
Classification: F01D,F02C,F05D

Abstract:
1. A shroud segment for being incorporated in a gas turbine engine so as to suppress influence of hot combustion gas on a turbine case of the gas turbine engine, comprising: a back plate formed in an arc shape and supported by the turbine case, the back plate comprising a first plate portion and a second plate portion integrally formed on an axially front end of the first plate portion and extended radially inward; a touching member integrally formed on an inner surface of the back plate for touching with a rotating turbine blade; a pair of first seal slots for receiving a pair of first spline seal plates, the first seal slots being formed on circumferentially both sides of the first plate portion and extended substantially across a whole length of the first plate portion; a pair of second seal slots for receiving a pair of second spline seal plates, the second seal slots being formed on circumferentially both sides of the second plate portion and extended substantially across a whole length of the second plate portion; and a pair of seal gaps respectively communicating with the first seal slots and the second seal slots to allow insertion of the first spline seal plates and the second spline seal plates, the seal gaps respectively comprising abutment surfaces recessed from front surfaces of the second seal slots so as to receive front ends of the first spline seal plates to prevent the first spline seal plates from displacing from the first seal slots.