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借鉴相关核电厂主泵已成熟应用的摩擦式防倒转装置工作原理,提出一种结构简单、尺寸较小、转动部件较少的凸轮防倒转装置。针对正向旋转时凸轮防倒转装置能否正常脱离这一关键问题,基于流体润滑理论建立仿真计算模型,并利用Matlab进行程序编制;最后结合某屏蔽泵结构尺寸,进行初步的凸轮防倒转装置结构设计,计算分析了转子正向转速、脱离程度与压紧力矩三者之间的关系,得到脱离转速。结果表明,转子正向旋转至一定转速时,凸轮防倒转装置能够正常脱离。
With reference to the working principle of the friction type anti-reversing device which has been applied in the relevant nuclear power plant main pump, a cam anti-reversing device with simple structure, small size and few rotating parts is proposed. Aimed at the key problem of whether the cam anti-reversing device can be properly disengaged during normal rotation, a simulation calculation model is established based on fluid lubrication theory and programmed by Matlab. Finally, the structure of a shield pump Design, calculation and analysis of the rotor forward speed, the degree of detachment and pressing the relationship between the three, get off speed. The results show that when the rotor rotates forward to a certain speed, the cam anti-backup device can be normally disengaged.