Patent ID: 6132173
Filing Date: 2000-10-17
Classification: F01D,F05D

Abstract:
A moving blade for a gas turbine, comprising:said blade leaving an internal passage for carrying s earn through the blade for steam cooling thereof, the blade passage being configured to carry steam into the blade through a radially inner base end of the blade and into a first portion of the passage formed within a edge portion of the blade and to carry steam out of the blade through a second portion of the passage formed within a leading edge portion of the blade and discharging through the base end of the blade;a platform attached to the base end of the blade, the platform including a peripheral portion surrounding the base end of the blade; anda steam passage formed in the peripheral portion of the platform and connected to the passage in the blade such that a portion o f steam supplied to the blade flows through the steam passage in the platform for cooling thereof, the passage in the platform including passages connected to the first portion of the blade passage for receiving steam therefrom and extending forward along the platform and connected to said second potion of the blade passage for discharging steam thereinto.