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一、开发1米级长叶片的技术经济意义随着电网容量的增大,汽轮机的单机功率也不断增大。合理地增大单机功率既能提高发电设备的经济性,又能降低电站的造价。因此提高型汽大轮机的单机功率是当代汽轮机发展方面的特点之一,而制约汽轮机功率的最重要元件之一是低压末级长叶片。这首先适用于轻水堆核电站用汽轮机,因为其低压排汽量在同样功率情况下,要比常规电站的再热汽轮机大一倍。图1表示BBC公
First, the development of 1 meter-long blade of the technical and economic significance As the grid capacity increases, steam turbine power is also increasing. Reasonably increase the stand-alone power can not only improve the economy of power generation equipment, but also reduce the cost of power station. Therefore, it is one of the characteristics of contemporary steam turbine development to improve the stand-alone steam turbine power. One of the most important components that restrict the steam turbine power is the low-pressure end-stage long blade. This applies firstly to turbines for light-water reactor plants because its low-pressure exhaust volume is twice as large at the same power as reheat turbines in conventional power plants. Figure 1 shows the BBC