摘要
本文针对水泵叶轮、混流式水轮机转轮止漏密封的磨损和汽蚀破坏情况,对圆柱面间隙式密封、迷宫式密封和反螺旋式密封间隙的压力分布及其泄漏量变化规律进行了模拟试验研究。结果表明:用新设计的反螺旋式密封代替传统的迷宫式密封,可以减轻止漏密封磨蚀破坏,延长水泵和水轮机使用寿命,提高水力机械的容积效率。
The pressure distribution in the clearances of cylinder-type gap seal, labyrinth-type seal, and inverse-spiral seal as well as the variation patterns of leakage through these clearances are investigated by simulating test in this paper for reducing the wear and cavitation damage of runner sealing ring of water pump and francis turbine. The result obtained shows that it is an effective way of reducing the wear and cavitation damage of sealing ring and improving the volumetric effeciency of water pump and turbine to replace traditional labyrinth-type seal with new designed inverse-spiral seal.
出处
《甘肃工业大学学报》
1989年第1期16-22,共7页
Journal of Gansu University of Technology
关键词
水轮机
密封装置
止漏
water turbine, pump, seal, wear and cavitation, leakage
