Stator blade suitable for low-pressure cylinder of high-power thermal power steam turbine and generation method of stator blade

The invention discloses a stator blade suitable for a low-pressure cylinder of a high-power thermal power steam turbine and a generation method of the stator blade, and relates to the field of thermal power steam turbines, the stator blade is formed by modeling, bending and stacking five to nine characteristic sections located at different blade heights, and each characteristic section selects a proper mother type according to an actual outlet Mach number; and the mother type is any one of a subsonic mother type, a transonic mother type and a supersonic mother type. According to the invention, the loss of the stationary blade can be obviously reduced, the uniformity and stability of steam flow in the stationary blade runner are improved, and the stationary blade is better matched with a downstream movable blade to obtain higher efficiency. 本发明公开了一种适用大功率火电汽轮机低压缸的静叶片及其生成方法，涉及火电汽轮机领域，由五至九个位于不同叶片高度处的特征截面经过模化、弯曲后积叠而成，每个特征截面根据实际出口马赫数选择合适的母型，母型为亚音速母型、跨音速母型和超音速母型中的任意一种。本发明能够显著降低静叶损失，提高静叶流道内汽流的均匀性和稳定性，并与下游动叶更好地匹配，获得更高