In this paper,the full scale experiment data are stated and compared with API nominal value to ascertain actual casing strength margin.
统计检验分析表明,国内主要套管生产厂的API套管强度性能趋于稳定并达到较高水平,存在高于API额定值的强度余量。
The rated speed of the hydro-turbine generator units can be selected by calculation with parameters as the optimum unit rated speed of turbine,turbine weighted average head,turbine runner diameter.
水轮发电机组额定转速 n_r 的常用计算公式中,涉及最优单位转速、加权平均水头、水轮机转轮直径三个参数,其目的在于通过合理选择 n_r 使水轮机经常运行在其最优效率区域,以提高电站发电效益。