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。
This article is introduce the properties of roller guider, the calculations of the fixed load and life of roller guider were determined, theoretical basis and calculations were provided for evaluating performance of newroller guider.
概要介绍了滚柱导轨的特性,提出了滚柱导轨额定载荷和寿命和计算公式,通过实例为设计和评价新型的滚柱导轨提供了可靠的理论和实践依据。
