Device for automatically adjusting power of turbine pump

The invention relates to a device for automatically adjusting the power of a turbine pump. The device comprises a lift valve arranged outside a turbine air inlet casing, an air inlet valve arranged in the turbine air inlet casing, and an inlet chamber control channel and an outlet chamber control channel which are used for connecting an air inlet valve oil circuit and a lift valve oil circuit. The device solves the technical problem that the jet pipe and air inlet passage of an aspirated engine, which works under large airspace, high Mach number and large-scale variable working conditions, are difficult to adjust, ensures that the output power of the turbine pump is within a rated value range and improves the processing and assembly manufacturability of the turbine pump.