论文部分内容阅读
在初步设计阶段中,必须概略地进行水轮发电机组的调节保证条件计算,从而初步确定水轮机导水翼的关闭时间T_s;水锤的最大相对压力昇高ζмакс,尾水管的真空度H_е;转数的相对变化值β;以及机组所必须的回转力矩GD~2。以上几个因素,决定了机组的运转调节稳定,我们进行计算的目的,在于初步选定一个合适的导水翼关闭时间T_5,使上述各因素均在允许的范围内,本文着重于阐述有关计算的步骤和计算方法的简化。机组的回转力矩GD~2值,在我们初步选定了发电机型号以后,便可根据厂家提供的资料获得,当没有厂家资料时,一般发电机的回转力矩GD~2值,
In the preliminary design stage, the adjustment guarantee conditions of the hydrogenerator must be roughly calculated, so as to initially determine the closing time T_s of the turbine hydrofoil; the maximum relative pressure of the water hammer is increased by ζмакс, the degree of vacuum of the draft tube is H_е; The relative change of the number β; and the necessary torque of the unit GD ~ 2. The above several factors determine the stability of the operation regulation of the unit. The purpose of our calculation lies in the preliminary selection of a suitable water-shut-off wing closing time T_5, so that the above factors are within the allowable range. This article focuses on the relevant calculation The simplification of steps and calculation methods. The rotating torque GD ~ 2 of the unit can be obtained according to the information provided by the manufacturer after we have initially selected the generator model. When there is no manufacturer’s data, the general torque of the generator is GD ~ 2,