摘要
在水轮发电机组自动化技术方面,至今尚无一个适用的温度控制子系统,只能采用监测的方法,对其升温进行超限报警、停机。因此温度场控制问题是为提高机组效益必须研究和解决的问题之一。而在温度场控制中,轴瓦温度的控制又是一个需要先解决的重要的课题。因为轴瓦的的运动状态依赖于时间和空间两个变量,所以其温度场控制要求用分布参数控制系统。本文对此作了一些探讨,建立了动态数学模型,对其薄壁厚度问题进行了讨论,得出了一些有益的推论。
Up to now there is no applicable temperature control subsy- stem but just monitoring and measuring in the field of automation of hydroelectric generating set. The temperature rise in set can only be alarmed when the temperature exceeds the limit or will result in machine stop. The temperature field control problem is one of the problems which should be taken into consideration and solved to increase the efficiency of the generating set. Moreover, the bush temperature control is a tather important question in the temperature field control. The bush temperature kinematics depends not only on the time variable, but also on the space variable, that is to say, the temperature field control requires to use a distributed-parameter control system. This paper makes an approach to this problem. Some dynamic mathematical midels have been set up, the problem of the thin-wall construction thickness disscused and some inferences drawn.
出处
《山东建材学院学报》
1989年第1期5-17,共13页
Journal of Shandong Institute of Building Materials
关键词
水轮发电机
轴瓦温度
控制系统
Hydroelectric generation
Control system
Bush temperature
