| 摘要 |
955,457. Valves. ADOLPH SAURER Ltd. Nov. 21, 1962 [Jan. 29, 1962], No. 44007/62. Heading F2V. [Also in Division G3] The main shaft 2 of a gas turbine drives both a fuel pump and an electric generator, the generator being connected to an electromagnetic control valve 12 for the fuel supply to the combustion chamber. When the turbine is operated at a desired speed, the fuel, which enters the valve through duet 11, is adjusted to the correct rate of flow by piston 16 co-operating with surface 17. The fuel leaves the valve through duct 13 bored in the shaft 2. If the turbine speed now increases, the generator voltage rises and solenoid 15 moves armature 20 against the force of spring 21 to throttle the fuel supply. Similarly, if the speed is reduced, the piston 16 is moved to allow the passage of more fuel. If the solenoid circuit is broken, the spring 21 pushes armature 20 and piston 16 against surface 18 so that the fuel supply is interrupted. A damping member 30 is positioned between springs 21, 31. The generator forms, with the solenoid 15, a circuit including a variable resistor and a switch. |
