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一、用一次转移法测定机组中心《水电机电安装技术》先后刊载了范竞成、胡金荣等同志关于用固定中心法(或称一次法)测定立轴水轮发电机组中心的方法,并从理论和实践上作了详细的说明。这种方法与传统的转移法相比,无论在提高测量精度还是简化施工程序等方面都显示了它的优越性。但是我们在某电站安装第一台HL263型立轴机组时也遇到了这样的难题。其一,当安装人员进入安装现场时,由于主厂房、主引水管等水工建筑已竣工,所以要在厂房顶部预埋机组中心测量装置已相当麻烦。其二,厂房的轴线即机组的x、y轴线原已基本
First, the use of a transfer method to determine the center of the unit “Hydropower Electrical and Mechanical Installation Technology” has published Fan Jingcheng, Hu Jinrong and other comrades on the use of fixed center method (or a method) Determination of vertical shaft hydrogenerator center method, and in theory and practice Made a detailed explanation. Compared with the traditional transfer method, this method shows its superiority both in improving measurement accuracy and simplifying construction procedures. But we also encountered such a problem when installing the first HL263 vertical shaft unit at a power plant. First, when the installer enters the installation site, it is quite troublesome to embed the center measuring device of the unit at the top of the plant due to the completion of the hydraulic works such as the main building and the main diversion pipe. Second, the axis of the plant that the unit x, y axis has been basic