Abstract—

The article presents the results of experimental studies on the effect of circulation pump operating modes on the wear of a double reciprocating slit throttling hydrostatic bearing operating in a lead coolant environment. The experiments were conducted on a high-temperature circulation test bench at a lead coolant temperature of 420–450°C. Results were obtained for operation modes with a high number of start-stop cycles (approximately 100 cycles per 100 h of operation), sustained operation with a low number of start–stop cycles and nominal speeds of 1000–1100 rpm (not exceeding 8 cycles per 100 h of operation), with 25 start–stop cycles per 100 h, and at low pump speeds below nominal values of 600–700 rpm with a maximum of 8 start–stop cycles per 100 h of operation. Data on the wear of the bearing bush and shaft are presented in the article. Processing and analysis of the research results led to the conclusion that this type of bearing can be used in low-pressure axial pump systems only under conditions where the pump creates a head exceeding 1.1 m of liquid lead.

中文翻译：

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双往复狭缝节流轴承在铅冷却液环境下的适用性研究

摘要-

本文介绍了循环泵运行模式对在铅冷却剂环境中运行的双往复狭缝节流静压轴承磨损影响的实验研究结果。实验在高温循环试验台上进行，铅冷却液温度为420-450℃。结果是针对具有大量启停循环（每运行 100 小时大约 100 个循环）、具有少量启停循环和标称速度 1000–1100 rpm（不超过 8 个循环）的持续运行模式获得的。每 100 小时运行），每 100 小时 25 次启停循环，并且在低于 600-700 rpm 标称值的低泵速下，​​每 100 小时运行最多 8 次启停循环。文章中提供了轴瓦和轴的磨损数据。对研究结果的处理和分析得出的结论是，这种类型的轴承只能在泵产生超过 1.1 m 液铅扬程的条件下用于低压轴流泵系统。