This paper describe the blade stress state of Francis turbine in the course of starting, load rejection, stalling by analysing the field test data.

本文通过分析近期的现场测试数据，给出了混流式水轮机转轮叶片在启动、甩负荷、停机三种过渡工况下的应力状态。

youdao

The results show that stalling torque increases and no load speed decreases with the increase of the pre-load and degree of vacuum.

结果表明，随着预紧力和真空度的增加，马达的堵转力矩增加而空载转速下降；

youdao

The results show that stalling torque increases and no load speed decreases with the increase of the pre-load and degree of vacuum.

结果表明，随着预紧力和真空度的增加，马达的堵转力矩增加而空载转速下降；

youdao