论文部分内容阅读
1.绪论根据实验研究的结果可知,可逆机组甩负荷吋,出现nZr成份的水压脉动的原因,是由于在水轮机制动区域,转轮进口处的轮叶腹背两面的压力差受到逸速影。向而增大所引起的。(在第一篇中已有叙述) 关于转轮内流动的分析已有较多的研究,但其大部分是有关正规流动状态的。虽然有关部分负荷状态或低流量区域状态的研究也曾进行过,但对在逸速状态下,水轮机制动区域所发生的上述那种现象的分析几乎没有见过。我们就这个问题进行了理论解析并得到了一些满
1. INTRODUCTION According to the experimental results, it can be seen that the cause of nZr component water pressure pulsation in the reversing unit is due to the pressure difference between the ventral and abdomen surfaces of the impeller at the turbine inlet, . To increase caused by. (Described in the first article) There has been much research into the analysis of flow in runners, but much of it is about formal fluidity. Although studies have also been conducted on the state of partially loaded or low-flow areas, the analysis of the above phenomena occurring at the braking area of the turbine at Yat speed has been almost unseen. We conducted a theoretical analysis of this issue and got some fullness