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    A GAS TURBINE ENGINE CONTROL SYSTEM AND METHOD FOR LIMITING TURBINE OVERSPEED IN CASE OF A SHAFT FAILURE
    1.
    发明公开
    A GAS TURBINE ENGINE CONTROL SYSTEM AND METHOD FOR LIMITING TURBINE OVERSPEED IN CASE OF A SHAFT FAILURE 审中-公开

    公开(公告)号：EP4390064A1

    公开(公告)日：2024-06-26

    申请号：EP22216427.9

    申请日：2022-12-23

    申请人： Rolls-Royce Deutschland Ltd & Co KG

    发明人： CALDERON, Jorge

    IPC分类号： F01D21/04 ,  F01D17/16 ,  F02C9/52 ,  F02C9/54

    CPC分类号： F01D21/045 ,  F02C9/52 ,  F02C9/54 ,  F01D17/162 ,  F05D2270/02120130101 ,  F05D2270/0920130101

    摘要： The invention regards a gas turbine engine control system and a method for limiting turbine overspeed in case of a shaft failure. The control system comprises an overspeed protection system (4) which is able to detect a shaft failure, a variable stator vane mechanism (6), wherein the variable stator vane mechanism (6) is configured to adjust variable stator vanes (66) of a compressor in their rotational position, wherein the variable stator vane mechanism (6) is activated to move at least one row of the variable stator vanes (66) into a closed position which blocks air flow through the compressor in case a shaft failure is detected, and bleed valves (121) in the compressor having a closed position and an opened position, wherein the bleed valves (121) are configured to divert in the opened position airflow through the compressor to a bypass channel of the gas turbine engine. It is further provided a detection system (67) detecting directly or indirectly the position of at least one row of the variable stator vanes (66), wherein the control system is configured to set the bleed valves (121) to the opened position when the detection system (67) detects that the at least one row of variable stator vanes (66) has moved into the closed position.