拉杆转子轮盘结合面接触传热试验研究  

Experimental Investigation on Contact Heat Transfer of Joint Interfaces of Rod Fastening Rotor

作　　者：李俊南 张锁怀 祝梦洁 纪林章 LI Jun-nan;ZHANG Suo-huai;ZHU Meng-jie;JI Lin-zhang(School of Mechanical Engineering,Shanghai Institute of Technology,Shanghai,China,Post Code :201418)

机构地区：[1]上海应用技术大学机械工程学院,上海201418

出　　处：《热能动力工程》2018年第12期72-77,共6页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金(51475311)~~

摘　　要：为了研究分布式拉杆转子在不同拉杆预紧力和轮盘表面粗糙度影响下轮盘结合面接触传热特性,建立了分布式拉杆转子轮盘结合面接触热阻分形模型,对拉杆转子进行了热力学计算。设计搭建拉杆转子轮盘结合面接触传热特性试验台,测量了拉杆转子温度场随拉杆预紧力和轮盘表面粗糙度的变化。结果表明:结合面接触传热系数随着拉杆预紧力增大而增大,随着轮盘表面粗糙度的增大而减小,并验证了结合面接触热阻分形模型适用于分布式拉杆转子轮盘结合面接触传热特性分析。In order to study the contact heat transfer characteristics on the joint interface of the distribu- ted rod fastening rotor under the influence of different pull rod pretension and the surface roughness of dif- ferent wheel disk,the thermal contact resistance fractal model on the joint interface of the distributed rod fastening rotor is established,and the thermodynamic calculation of the rod fastening rotor is carried out.A contact heat transfer characteristic test rig for the joint interface of the distributed rod fastening rotor is de- signed and built.The temperature field of the rod rotor is measured by varying the tension force of the pull rod and the surface roughness of the wheel.The results show that the heat transfer coefficient of the joint interface increases with the increase of the pretension of the rod,and decreases with the increase of the surface roughness of the wheel.The thermal contact resistance fractal model of the joint interface is veri- fied,and it is proved that it is suitable for the study of the thermal contact resistance on joint interfaces of distributed rod fastening rotor.

关 键 词：拉杆转子 预紧力 表面粗糙度 接触传热试验 

分 类 号：TK47[动力工程及工程热物理—动力机械及工程] TK311