本文提出一种外径密封的螺旋槽推力轴承新结构，并利用螺旋槽近似理论对该轴承进行了分析计算。
This paper deals with a newly designed spiral-groove thrust bearing, with a slit seal around it. By the approximate theory of spiral-groove bearing, this new type bearing is analysed.
通过运行实践 ，本文对该水轮发电机组的推力轴承、水导轴承、主轴密封、转轮密封等主要结构进行了分析 ，仅供参考。
The article presents structural characteristics of upper guide bearing as well as structure and working principles of upper guide cooler of 700MW turbine generator at Longtan Hydropower Station.
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