Conic Springs Block Calculation for Pressure Stabilization Power Accumulator of Powerful Turbogenerator Stator Core

Abstract

The results of an analytical review of modern methods and means of restoring and stabilizing the pressing pressure of the stator core of a powerful turbogenerator (TG) during operation are presented. The advantages and features of the use of power accumulators (PA) with blocks of disk springs for pressure stabilization, which are installed under the tightening nuts or instead of them on the threaded ends of the tightening prisms, are described. A number of TG and PA parameters that must be known to calculate the mechanical characteristics of the conic springs unit are outlined. It is shown that the optimal method of assembling disc springs into blocks in CA is combined (series-parallel). Based on the specified design parameters, the dependence of the force created by the disc spring and the spring block on the spring thickness was obtained. The dependence of the force of the spring block on the displacement of the pressure plate of the stator core for different values of the spring thickness was determined. The method of calculating the strength of disc springs is given. Ref. 12, fig. 9.