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大型油罐中间抗风圈设计计算 被引量:1
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作者 靳永欣 孙思海 《石油工程建设》 2011年第6期20-22,88,共3页
文章通过对国内外标准中关于油罐中间抗风圈设计计算的分析,尤其通过对抗风圈截面尺寸选取方面的理论分析与工程实例的比较,指出采用GB 50341-2005《立式圆筒形钢制焊接油罐设计规范》选取的中间抗风圈截面尺寸往往小于API 650-2010《We... 文章通过对国内外标准中关于油罐中间抗风圈设计计算的分析,尤其通过对抗风圈截面尺寸选取方面的理论分析与工程实例的比较,指出采用GB 50341-2005《立式圆筒形钢制焊接油罐设计规范》选取的中间抗风圈截面尺寸往往小于API 650-2010《Welded Tanks for Oil Storage》设计的截面尺寸,罐壁抗风稳定性存在一定的危险,建议在设计计算时可采用API 650-2010进行验证。 展开更多
关键词 大型油罐 中间抗风圈 最小截面尺寸 抗风能力 稳定性
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Optimum Determination of Partial Transmission Ratios of Mechanical Driven Systems Using a V-belt and a Three-Step Helical Gearbox
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作者 Dang Anh Tuan Nguyen Khac Tuan Vu Ngoc Pi 《Journal of Environmental Science and Engineering(B)》 2017年第6期328-331,共4页
This paper introduces a new study on the optimum calculation of partial transmission ratios of a mechanical drive system using a V-belt and a three-step helical gearbox in order to get the minimum size of the system. ... This paper introduces a new study on the optimum calculation of partial transmission ratios of a mechanical drive system using a V-belt and a three-step helical gearbox in order to get the minimum size of the system. The chosen objective function was the cross section dimension of the system. In solving the optimization problem, the design equation for pitting resistance of a gear set was investigated and equations on moment equilibrium condition of a mechanic system including a V-belt and three helical gear units and their regular resistance condition were analysed. From the results of the study, effective formulas for determination of the partial ratios of the V-belt and three-step helical gearboxes were introduced. As using explicit models, the partial ratios can be determined accurately and simply. 展开更多
关键词 Transmission ratio gearbox design optimum design V-belt drive helical gearbox.
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