摘要
针对CO_(2)热泵压缩机在高压工况下易出现的齿顶应力集中与密封磨损问题,建立关键部件的热-力耦合模型,刻画涡旋盘与主轴的受力与温度分布特性,并提出由锻造、调质、渗氮与喷涂构成的制造工艺优化方案。仿真与试验结果显示,优化后齿顶最大等效应力由682 MPa降至595 MPa,主轴疲劳寿命由1.2×10^(6)次提高至1.7×10^(6)次,泄漏量与振动幅值随运行时间整体呈下降趋势,为CO_(2)热泵在高压工况下稳定运行提供了技术依据。
To address the issues of tooth tip stress concentration and seal wear that are prone to occur in CO_(2)heat pump compressors under high-pressure conditions,a thermal-mechanical coupling model of key components is established to characterize the force and temperature distribution characteristics of the vortex disk and main shaft.A manufacturing process optimization scheme consisting of forging,tempering,nitriding,and spraying is proposed.Simulation and experimental results show that the maximum equivalent stress of the optimized tooth tip has decreased from 682 MPa to 595 MPa,and the fatigue life of the main shaft has increased from 1.2×10^(6)cycles to 1.7×10^(6)cycles.The leakage rate and vibration amplitude show an overall decreasing trend with operating time,providing technical basis for the stable operation of CO_(2)heat pumps under high-pressure operating conditions.
作者
蒋春光
JIANG Chunguang(Ningbo Chunguang Hot Water Co.,Ltd.,Ningbo 315502)
出处
《现代制造技术与装备》
2026年第1期156-159,共4页
Modern Manufacturing Technology and Equipment
