GAS-TURBINE ENGINE ROTOR SPEED AUTOMATIC CONTROL SYSTEM Russian patent published in 2004 - IPC

FIELD: mechanical engineering; turbocompressors.

SUBSTANCE: invention relates to rotor speed automatic control systems of turbine engines. In proposed system containing constant pressure main oil line, control valves with hydraulic servodrive and spool distributor with recirculating oil main line after distributor in which electrohydraulic converter and hydrodynamic speed regulator are placed, and automatic control system with turbine engine rotor speed pickups operated by commands of automatic control system, electrohydraulic converter and hydrodynamic speed regulator are provided with position pickups to provide synchronous tracing recirculating oil drain area in hydrodynamic speed regulator equal to regulated recirculating oil drain area in electrohydraulic converter. Selector spool is placed in recirculating oil main line between electrohydraulic converter and hydradynamic speed regulator to which constant pressure main oil line is additionally connected accommodating also quick-acting three-way valve operated by automatic control system to control operation of selector spool.

EFFECT: increased reliability of automatic control system of turbine engines, particularly, rotor speed control circuit of turbine engine with electrohydraulic converter.

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