| 摘要 |
<p>1,028,657. Fluid-pressure servomotor systems. BENDIX CORPORATION. March 31, 1964, [April 30, 1963], No. 13185/64. Heading G3P. [Also in Division F1 ] A load sharing system for a bank of gas turbine engines 10a. . . d driving a common load 30 comprises a governing system 32a... d for the fuel supply of each engine responsive to the output shaft speed of its associated engine, means 74a... d to produce a power output signal for each engine, selecting means 128 to select the highest power output signal and comparison means 106a to compare an individual power output signal with the aforesaid highest signal each comparison means being connected to adjusting means 104a to adjust the governor device to average out the load. The fuel supply valve 42a of each engine is controlled by a capsule 62a responsive through pipe 74a to the compression discharge pressure of its associated engine, which is a measure of power output, and is connected by a speed responsive system comprising a governor 96a, driven from the output shaft 24a of the associated engine, controlling a bleed off valve 88a in a pressurized air line 78a tapped off from the line 74a, the pressure in line 78a acting upon a capsule 64a opposing the capsule 62a. The sensitivity of the governor system 96a, 88a, is varied by an adjusting valve 104a in the line 78a controlled by a diaphragm 106a which composes the individual engine power output, represented by the pressure in pipe 74a, with the highest power output signal represented by a pressure in pipe 113. The various valves 104a in each governor system 32a... d are adjusted, thereby adjusting the pressures in pipes 78a and correspondingly adjusting the respective fuel valves, until the power outputs of the engines are balanced. The highest pressure selecting system 128 comprises loose disc valves 114, 124 which are pressure operated to select the higher pressure from two engines each, which higher pressures are passed on to pipes 122, 126 from which valve 128 selects the final highest pressure. An overspeed valve 86a in each system, driven from the corresponding compressor shaft, is opened at overspeed conditions to release the pressure in pipe 78a and reduce the fuel supply. The output shafts 24a... d may be interconnected mechanically or may drive loads 28a... d such as generators interconnected mechanically or electrically.</p> |
