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首页> 外文期刊>Thermal engineering >Shaft Seals with an Easily Removable Cylinder Holder for Low-Pressure Steam Turbines
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Shaft Seals with an Easily Removable Cylinder Holder for Low-Pressure Steam Turbines

机译：带有易于拆卸的气缸架的轴封，用于低压蒸汽轮机

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摘要

The article is devoted to the problems that occur at the operation of LPC shaft seals (SS) of turbines, particularly, their bearings. The problems arising from the deterioration of oil-protecting rings of SS and bearings and also the consequences in which they can result are considered. The existing SS housing construction types are considered. Their operational features are specified. A new SS construction type with an easily removable holder is presented. The construction of its main elements is described. The sequence of operations of the repair personnel at the restoration of the new SS type spacings is proposed. The comparative analysis of the new and the existing SS construction types is carried out. The assessment results of the efficiency, the operational convenience, and the economic effect after the installation of the new type seals are given. The conclusions about the offered construction prospects are made by results of the comparative analysis and the carried-out assessment. The main advantage of this design is the possibility of spacings restoration both in SS and in oil-protecting rings during a short-term stop of a turbine, even without its cooling. This construction was successfully tested on the working K-300-23.5 LMP turbine. However, its adaptation for other turbines is quite possible.
机译：本文专门讨论在涡轮机的LPC轴封（SS）运转时出现的问题，特别是在其轴承上。考虑了由于SS和轴承的防油环损坏而引起的问题，以及可能导致的后果。考虑现有的SS房屋建筑类型。指定了它们的操作功能。提出了一种新型的SS结构类型，其支架易于拆卸。描述了其主要元素的构造。提出了维修人员在恢复新的SS型间距时的操作顺序。对新的和现有的SS结构类型进行了比较分析。给出了安装新型密封件后的效率，操作便利性和经济效果的评估结果。通过比较分析和实施评估，得出了所提供的施工前景的结论。这种设计的主要优点是，即使在涡轮机不进行冷却的情况下，也可以在涡轮机短期停机期间在SS和防油环中恢复间距。此结构已在正常工作的K-300-23.5 LMP涡轮机上成功测试。但是，它很可能适用于其他涡轮机。

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