| 摘要 |
PURPOSE:To make it possible to control quickly the valves belonging to a gas- fuel system in proportion to the density of the gas fuel by a method wherein the number of revolutions of a gas compressor, the temperature and the pressure on the upstream and the downstream sides of the gas compressor are measured to analyze the density of the gas fuel and the valves belonging to the gas fuel system are automatically opened and closed on the base of the results of the analysis. CONSTITUTION:The titled gas turbine plant comprises a driving device including an air compressor 1, a burner 2 and a gas turbine 3 and a driven device including a blast furnace blower 4, a blast furnace gas compressor 5 and a generator 6 and in this case, both of the driving and driven devices are connected to each other through a coupling or a gear 7. The gas fuel (b) is supplied to the burner 2 after it is compressed by the compressor 5 driven by a blast furnace pressure. In this case, thermosensers 41 and 43 and pressure sensers 42 and 44 are arranged on the upstream and the downstream sides of the gas compressor 5, respectively, and the outputs of these sensers are inputted to an operation device 48 to thereby detect the density of the fuel gas. With the above arrangement, the valves at various sections of the gas turbine plant are controlled in proportion to the results of detection of the density of the gas fuel in such a manner that for example, a fuel check valve 13 is opened and a bypass valve 14 is closed when the plant is started. |
