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Hydroelectric units generally use Babbitt Alloy with strong friction reduction properties as the bearing bush material. However, due to the bearing bush made by Babbitt Alloy material has lower strength, it can not be used in the need to withstand the larger pressure of large-scale hydropower generating sets. The Steel Kogu (SK) can withstand large loads while having good wear resistance. Therefore, the oil film temperature, bearing bush body temperature and power of SK bearing pad and Babbitt Metal bearing bush are studied comparatively through experiments. The thickness, pressure, maximum temperature of oil film, base deformation and power loss of the two types of bearing bush are studied comparatively by numerical calculation. The results show that at the same oil inlet temperature, the base deformation and maximum oil film temperature of SK bearing bush are lower than that of Babbitt Alloy by 0.06-0.08 mm and 9.6-14.6 ℃, respectively, and the oil film thickness of SK bearing bush is higher than that of Babbitt Alloy by 13-15 μm. The SK bearing bush can be used as a potential choice of bearing bush material for large-scale hydroelectric units because of its lower oil film temperature and smaller base deformation during the operating process.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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