How to determine the bearing height of steam turbine
With the use of a dummy shaft, the center between the bearing block and the cylinder body is re located so that the center of the pit is restored, and then the bearings are re - matched. Make sure the bearing seat is horizontal and vertical. Thus, the height positioning problem of the turbine bearing seat is completed,
After determining the elevation of the turbine body, the height of the bearing seat can be determined.
The domestic large-scale steam turbine sets, the manufacturer has stipulated the bearing seat's elevation size, the bearing pedestal's raise degree, the manufacture factory has not given the detailed numerical value.The installation of 1. new units when the elevation should meet the requirements of manufacturer, factory blowing requirements, should be installed according to the manufacturer, if the manufacturer no clear Yang degree requirements, should make the bearing and the rotor mounted on the shaft inside the neck of Yang remained the same (each rotor shaft neck Yang of factory are specific requirements)2. when the unit is overhauled, the bearing seat elevation shall not be adjusted. If there is a deviation of the rotor stiffness, the gasket under the bearing or tile pillow shall be adjusted. When the center of the cylinder is biased, the gasket under the hood of the cylinder cat shall be adjusted3. when the old unit is rebuilt, it is basically the same as the installation of the new machine
