基于脉动热管和强制风冷的同轴式磁齿轮高效热管理  

Efficient thermal management of coaxial magnetic gears with pulsating heat pipe and forced air cooling

作　　者：周钰峰 罗帅 陈航 郝秀红[2] ZHOU Yufeng;LUO Shuai;CHEN Hang;HAO Xiuhong(Carbon Neutral Research Center,State Power Investment Corporation Research Institute,Beijing 102209,China;School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]国家电投集团科学技术研究院有限公司碳中和研究中心,北京102209 [2]燕山大学机械工程学院,秦皇岛066004

出　　处：《机械传动》2025年第4期117-125,138,共10页Journal of Mechanical Transmission

基　　金：河北省自然科学基金项目(E2022203090);河北省省级科技计划(236Z1902G);河北省高等学校科学技术研究项目(ZD2022090);云南省重大科技专项计划(202202AD080008)。

摘　　要：【目的】磁场调制型磁齿轮以其同轴式结构大幅度提升了传动能力,使其可以与机械齿轮相媲美。但狭长气隙的同轴式结构使其面临散热难题,高温容易导致永磁体性能下降,甚至退磁,传动失效。基于此,提出了基于脉动热管相变冷却和强制风冷的组合高效热管理技术。【方法】基于流固耦合仿真,描述了脉动热管由启动至动态平衡循环的工作过程,研究了充液率等参数对等效热导率的影响规律,分析了不同散热方式时磁齿轮的温度场分布情况。【结果】有限元分析和试验结果表明,单独脉动热管和强制风冷在磁齿轮散热方面均存在一定的局限性,热管与强制风冷的组合冷却方式具有高效的散热效果,可以为高功率密度磁齿轮的实现提供技术支持。[Objective] The field modulated magnetic gear(FMMG) with the coaxial structure has a higher transmission capacity,which can be comparable with mechanical gears.While,the coaxial structure with the narrow and long air gap makes FMMG face the problem of heat dissipation.High temperature is easy to cause the performance degradation of the permanent magnets,or even demagnetization,and transmission failure.In view of the seriousness of the problem,a combined heat dissipation based on the pulsating heat pipe(PHP) and forced air cooling was proposed.[Methods] The PHP working process from start-up to dynamic equilibrium cycle based on the fluid-solid coupling simulation was analyzed.Influence of the liquid filling rate and other parameters on the equivalent thermal conductivity was discussed.The temperature field distributions of the FMMG under the different heat dissipation modes were analyzed.[Results] The finite element analyses and test results show that there are specific shortcomings for single PHP heat dissipation and single forced air cooling heat dissipation in FMMG,and the combined cooling method with both PHP and forced air cooling can dissipate heat more efficiently.This technology can provide support for the realization of high-power density FMMGs.

关 键 词：磁齿轮 磁场调制 脉动热管 强制风冷 组合散热 

分 类 号：TH132[机械工程—机械制造及自动化]