公开(公告)号：US10655475B2

公开(公告)日：2020-05-19

申请号：US15352468

申请日：2016-11-15

申请人： ROLLS-ROYCE plc

发明人： Alan R Maguire ,  Timothy J Scanlon

IPC分类号： F01D11/24 ,  F02C7/18 ,  F01D9/04 ,  F01D25/12 ,  F01D25/24 ,  F02C9/18 ,  F01D11/20 ,  F01D11/14 ,  F02C7/12 ,  F01D5/18 ,  F02C3/10 ,  F16K1/22 ,  F23R3/00

摘要： A gas turbine engine includes a turbine and a turbine cooling arrangement. The turbine includes a turbine rotor surrounded by a static rotor track liner, and a nozzle guide vane downstream of the rotor in a core main gas flow path. The cooling arrangement includes a first air duct that provides cooling airflow to a rotor track liner cooling plenum and a second air duct that provides a cooling airflow to the nozzle guide vane. A common manifold is upstream in the cooling airflow of the ducts and provides cooling air to the ducts. A two-way valve modulates air provided to the ducts from the manifold. The valve is operates in a first or second mode. In the first mode, air flow to the first duct is relatively high and airflow to the second duct is relatively low compared to where the valve is operated in the second mode.