蒲石河抽水蓄能电站总装机容量1200 MW,年发电量为18.6亿kW.h。转轮是水轮机的关键部件,它是由上冠、下环和叶片构成的。下环类铸件一般具有轮廓尺寸大、断面不均匀等特点,铸造时容易产生缩孔、缩松、变形等缺陷。尤其下环铸造时易出现椭圆尺寸问题,导致内外圆加工量均不够,须焊补才能满足加工要求,质量不易保证。 Pushihe Pumped Storage Power Station has a total installed capacity of 1,200 MW and an annual generating capacity of 1.86 billion kW.h. The runner is a key component of the turbine and consists of a crown, a lower ring and blades. Under the ring castings generally have the contour size, cross-sectional features such as non-uniform, prone to shrinkage when casting, shrinkage, deformation and other defects. In particular, when the next ring casting ellipse size problems arise, resulting in both internal and external circular processing are not enough to be welded to meet the processing requirements, quality is not easy to guarantee.