Gas turbine with a spacer member and a turbine rotor disk defining an air cooling passage

摘要

In a gas turbine, in which a compressor (15) and a turbine (16) are connected by means of a distant piece (7,107), the distant piece and a turbine first-stagedisk (1,101) are connected by means of a joint portion. On the distant piece is formed a projection portion, and a spacer (8,108) is held by means of a spigot portion (7d,8d). Thin portion (8b) is formed on an outer diameter side of the spacer, and is in contact with a fin (13) of a turbine disk through a seal member (14). The turbine disk, the distant piece and the spacer define a cavity (8a,108a).