FCD speed regulator
FCD speed regulator

FCD speed regulator



Speed ​​controller operates as follows. With an increase in speed increases the centrifugal force on the weights 1 of the sensor, at the same time they separate, overcoming

Tightening the 2 and 3 springs of the centrifugal regulator and opening the cross section of the 7 pendulum. There is a decrease in pressure in the control cavity 13 and the metering needle 12 moves towards the closing of the flow section, reducing fuel consumption and restoring the specified speed. Static attachment with a choke package 8 serves to create an isodromic effect. With sharp perturbations, the 11 piston of the static attachment moves, displacing the working fluid into the rodless cavity of the metering needle and thereby increasing its speed. As we approach the equilibrium regime, the piston of the static attachment under the action of the springs shifts to a neutral position, reducing the speed of the dosing needle. The 9 and 10 throttle packets serve to increase the speed of the dosing needle for large disturbances, for example, in pick-up and reset modes.

The desired speed is determined by the position of the throttle, which through a cam lever and provides the required force on the spring regulator. To configure and use the adjusting screw. Package bimetallic plates 4 compensates fuel temperature effect on the change speed. Hereinafter rpit - pressure regulators supply.

The fuel distributor. The fuel distribution or distribution valves perform the functions of distributing fuel through the manifolds or sectors of the injectors in the combustion chambers. To the bottom end of the spool 1 of the distributor fuel is supplied from the dispensing tap, and the spring cavity is connected to the drain. As the pressure at the inlet to the fuel distributor increases, the spool overcomes the force of the tightening of the spring, moves upwards, opens the profiled windows of the fuel supply to the manifolds in the bushing. The 2 and 3 shut-off valves are designed to prevent fuel leaks on the engine that is not running.

Currently, due to the introduction of management practices GTD electronic control systems of the hydro system is greatly simplified. The main functions are powered motor fuel and power actuators, electronic control execution of commands, which carries out the most complex control functions, as well as motor control in case of failure of the electronic controller.

The use of pneumatic jet regulators in gas turbine engines is mainly associated with the need to ensure reliability in operation at high temperature of the working environment, the impact on the control system of vibration, electromagnetic and radiation radiation and other strong external influences. 


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