DEVICE FOR CONTROLLING AIR FLOW IN A TURBINE BLADE

摘要

The present invention relates to gas turbines and more particularly to a device for controlling the flow of cooling air through a flowpath in a turbine blade (10). The device can be inserted in the inlet opening (20) of the blade flowpath (24) and be retained therein. The device comprises a plug member (26) for adjusting the flow of cooling air through the flowpath (24). The plug member (26) comprises a retaining portion for retaining the plug member at the inlet opening (20) of the flowpath (24) and a blocking portion inserted within the flowpath for reducing the cross-sectional area of the inlet opening (20). Such a device is inexpensive and can be easily inserted in the inlet opening of a blade flowpath and retained therein.