石墨纸对带散热装置压电变压器磨损改善研究  

Study on Improvement of the Contact Wear of Piezoelectric Transformers With Heat Transfer Equipment by Using Graphite Papers

作　　者：张萌 邵维维[1] 苗源民 李培洋 韩志乐[1] 崔崤峣[1] 

机构地区：[1]中国科学院苏州生物医学工程技术研究所,江苏苏州215163 [2]中国科学院大学,北京100049

出　　处：《压电与声光》2017年第6期839-842,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金青年科学基金资助项目(61301041);中国博士后科学基金面上资助项目(2015M580252);江苏省博士后科研资助计划基金资助项目(1501135B);江苏省基础研究计划(自然科学基金)-面上基金资助项目(BK20161235);苏州市科技计划基金资助项目(SYG201607)

摘　　要：压电变压器的散热问题限制了其在高功率场合的应用。接触式散热装置为压电变压器提供了良好的散热途径,对其功率密度带来了革命性的提升,同时,也带来了压电变压器表面电极的摩擦、磨损问题。因此,该文提出在压电变压器和散热装置中插入厚22μm石墨纸垫片的方式。实验结果表明,持续工作80h时,使用石墨纸垫片方式的电极磨损是直接接触电极磨损的53%。两种方式的散热装置温升无明显差别,对减缓压电变压器电极磨损的研究有一定的参考意义。The piezoelectric transformers（PTs）are greatly restricted in high-power applications due to the deficiency of its heat dissipation.The contact heat transfer equipment,which provides a good heat dissipation path for PT,has brought a revolutionary upgrade for the power density of PTs.However,this method brought contact friction and wear between the PT and heat transfer equipment surface.In this paper,we present a method inserting a 22μm thick graphite paper between the PT and its heat transfer equipment to decrease the contact wear.The experimental result shows that the electrode wear using agraphite paper is 53% of that without graphite paper when continuously works for 80 h.The temperature rises of two heat dissipation equipments are almost the same.It provides some reference for slowing down the contact wear of electrode of piezoelectric transformer.

关 键 词：散热装置 石墨纸 转换效率 接触磨损量 温升 

分 类 号：TN384[电子电信—物理电子学]