核废料用行星搅拌器设计及分析

The Design and Analysis of Nuclear Waste Planet Wheeled Agitators

作为核废料贮桶内混合固化的关键设备,搅拌器的性能和效率直接关系到固化用时及质量。针对传统的行星搅拌器的自转运动依靠流体推动产生而无法确定其具体数值的不足,提出了自转运动由电机驱动的设计思路。推导了搅拌器工作时搅拌桨的运动轨迹计算式,运用Matlab对其运动轨迹进行仿真。并采用Fluent对搅拌器工作对象—废料桶内的流场进行模拟。结果表明:搅拌器的搅拌效率与其自转与公转运动角速度比值关系密切。从而论证了需要确定自转运动的必要性,也为搅拌器的设计及工况选择提供了相应的理论依据。

As a key equipmentofnuclearwaste mixture solidified in storage barrel, the agitatoris directlyrelated to the performance and efficiency of the curing time and quality. The rotation motion of a conventional planet wheeled agitators depends on fluid thrust, and the specific values can not be determined. In order to overcome this shortcoming, it thinks that the rotation motion should be drived by motor. The movement trajectories calculation formula of the impeller is deduced, it also uses Matlab to simulate the movement trajectories, and uses Fluent to simulate the flow field. The results showe that ratio of revolution speed to rotation speed of the planet wheeled agitators is closely related to mixing efficiency. It demonstrates that it is necessary to determine the rotation motion, and provides reference for work condition choice and product design of planet wheeled agitators.