SYSTEMS AND METHODS FOR PROVIDING FLOW OF PURGE AIR AND ADJUSTABLE FLOW OF COOLING AIR IN GAS TURBINE APPLICATION

摘要

PROBLEM TO BE SOLVED: To provide systems and methods for providing a flow of purge air and an adjustable flow of cooling air to a wheel space cavity or a stator cavity.SOLUTION: According to one embodiment, there is disclosed a turbine assembly. The turbine assembly may include a rotor assembly, a stator assembly positioned adjacent to the rotor assembly, and a wheel space cavity formed between the rotor assembly and the stator assembly. At least one fixed purge air orifice may be associated with the stator assembly. The fixed purge air orifice may be configured to provide a flow of purge air to the wheel space cavity. Moreover, at least one adjustable cooling air orifice may be associated with the stator assembly. The at least one adjustable cooling air orifice may be configured to provide a flow of cooling air to the wheel space cavity.