压缩机转子过盈配合温差拆解松动量模型研究

为了对过盈配合的叶轮和轴进行无损拆解,对温差拆解过程中的温度加载进行规划,通过选取合理的温度加载参数,获得理想的拆解效果。通过理论推导和在ANSYS中进行仿真计算,建立温差拆解过程中叶轮和轴配合面松动量的数学模型。通过改变相关参数,分析温度加载位置、加载时间对轴孔配合松动量的影响规律,找出合理的加热温度、加热时间和加热位置。研究结果表明,当其他因素一定时,在叶轮轮毂加热优于在叶轮流道加热,温度加载时间为1 400s时轴和孔的配合面松动量最大,对拆解最有利。

Loose volume model research on the interference fit compressor rotor using the method of temperature difference

In order to dismantle non-destructively the impeller and shaft under interference fit, the loaded temperature is planned reasonably for the temperature difference dismantling process. Through selecting suitable loaded temperature parameters, the desired dismantling effect can be acquired. Through theoretical analysis and FEM calculation with ANSYS, the loose volume model of the mating surfaces between the impeller and the shaft during the temperature difference dismantling process is built. Besides, through changing relevant parameters, the influence of the temperature heating location and the heating time on the loose amount between the shaft and hole is analyzed, and the reasonable heating temperature, heating location and heating time are obtained. The results show: when the other factors are constant, the temperature loading on the impeller hub is better than on the flow channel, and when the heating time is 1 400 s, the loose amount between the shaft and hole is the largest.