DEVICE FOR AUTOMATIC SUPPLY OF FUEL INTO COMBUSTION CHAMBER OF GAS-TURBINE ENGINE Russian patent published in 1995 - IPC

FIELD: gas-turbine engineering. SUBSTANCE: device has inlet pipe line through which fuel is fed to a cut-off cock, cock for batching fuel, and unit for control of position of the cut-off cock constructed as a piston. Downstream of the batching cock fuel is fed to the nozzles of the combustion chamber through the inlet pipe line. The control unit comprises solenoid valve for actuating, solenoid valve for cutting-off, and two opposite servo- pistons with a rod. The rod passes through a seat with a spaced relation and enters the intermediate chamber wherein a gate is received. The gate is mounted at the end of the rod. One of the seats has the inlet pipe line, and the other seat has outlet pipe line. The chamber is in communication with the piston space. In addition, the control unit has a double-step slide valve provided with the dummy passage. The grater step of the slide valve forms a spring space with the housing. The spring space is in communication with the drain. The slide valve also has the control space which is connected to the unit for arresting of speed of rotation of the free turbine. The space of the servo-piston is connected to the unit for arresting the speed of rotation of the gas-generator through a passage. EFFECT: enhanced accuracy of control. 2 cl, 1 dwg