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应用永磁传动原理和绝对密封技术设计出新型全封闭液化石油气泵 ,彻底解决了常规泵的泄漏及密封件更换频繁等问题。简述了泵的工作原理、传动与密封原理 ;对径向力的平衡、滑片安放角的确定、磁传动安全等设计问题做了讨论。泵的进出口呈直角 ,入口在上 ,出口在侧面 ,封油区偏置 4 5°布置 ,可达到径向力的部分平衡 ,减轻滑动轴承的径向载荷 ;滑片后倾安装5 7～ 11 3°可减小摩擦阻力 ;取消了易损密封件 ,实现了全封闭无泄漏 ,从而避免介质气化。新型泵除灌装液化石油气外 ,还可输送液态烃、液氨、丙烯等挥发性液体及石油产品
Application of permanent magnet drive principle and the absolute sealing technology to design a new fully enclosed liquefied petroleum gas pump, completely solve the conventional pump leaks and seal replacement frequent issues. The working principle, transmission and sealing principle of the pump are briefly described. The design problems such as the balance of the radial force, the setting of the sliding vane angle and the magnetic drive safety are discussed. Pump import and export at right angles to the entrance in the export side of the oil seal area offset 4 5 ° arrangement can be part of the radial force balance to reduce the radial load on the plain bearings; 11 3 ° to reduce the frictional resistance; the elimination of the fragile seal, to achieve a closed leak-free, thus avoiding the media gasification. In addition to filling the new pump liquefied petroleum gas, but also transport liquid hydrocarbons, liquid ammonia, propylene and other volatile liquids and petroleum products