COOLING MEDIUM PATH STRUCTURE FOR GAS TURBINE BLADE

摘要

An improved cooling medium path structure for cooling a gas turbine blade comprising a disk-side cooling medium path, a blade-side cooling medium path formed at the root portion of the blade and a delivery block disposed between the two cooling medium paths so as to establish communication between them. The delivery block is provided with an elastic engaging section which comes into elastic and line- contact with the disk-side cooling medium path and the blade-side cooling medium path whereby the sealing property of the contact portions of the structure is secured to allow a cooling medium to be supplied without leaking from the cooling medium paths and the heat of the cooling medium generated as a result of cooling the high-temperature portion of the gas turbine can be taken out so as to make the best use of it for other purposes.