ELECTROHYDRAULIC SYSTEM OF AUTOMATIC CONTROL OF ROTOR SPEED OF STEAM TURBINE OF ELECTRIC GENERATOR DRIVE OF SHIP PROPULSION SYSTEM Russian patent published in 2018 - IPC F01D17/22 

FIELD: turbines or turbomachines; power engineering.

SUBSTANCE: invention relates to the field of heat power engineering and can be used in the regulation of ship steam turbines. Electrohydraulic system of automatic control of the rotor speed of the steam turbine of the electric generator drive of the ship propulsion system comprises a speed controller, to the input of which the nominal and the actual speed sensor of the turbine rotor are connected together with the feedback sensor by the position of the control valve, and the output through the proportional electrohydraulic converter is connected to the hydraulic actuator hydraulic actuator of the control valve of the steam turbine, and also contains a health monitoring device. In order to increase the reliability and safety of the ship's turbogenerator propulsion system to the hydrocylinder of the power hydraulic drive by hydraulic channels, a discrete electrovalve is connected in parallel with the proportional electrohydraulic converter, to the electrical input of which is connected a device for generating a discrete electrical signal exceeding the actual rotor speed of the turbine above a given maximum permissible value. Also in the hydraulic channels between the proportional electrohydraulic converter and hydraulic actuator hydraulic cylinder are installed discrete electrovalves, to the electrical inputs of which the device for monitoring the serviceability of the electrohydraulic control system is connected.

EFFECT: invention makes it possible to increase the reliability and safety of the ship's turbogenerator propulsion system.

1 cl, 1 dwg