低熔点合金在电连接头中的应用性能研究

doi:10.16180/j.cnki.issn1007-7820.2020.03.013

摘要/Abstract

摘要：

针对输配电线路电连接头发热导致能源损耗甚至引发事故的问题,文中研究了低熔点合金在电连接头中的应用性能。选用在铜界面上润湿性较好的低熔点合金Sn-3.5Ag、Sn-1.6Cu、Sn-Zn-0.7Cu,设计其在电连接中的连接工艺并制作试样。利用ERESCO MF4便携式X光机判断连接后界面的可靠性,再搭建SLQ-2000A升流实验系统并模拟实际工况。最后,测试了低熔点合金和电力复合脂试样在额定通流值为180 A时,持续通流时间4 h过程中试件的发热情况。研究结果表明,低熔点合金作为电连接接触面材料后试样的发热量均低于电力复合脂连接试样的发热量。

关键词: 电连接头, 低熔点合金, 电力复合脂, 热稳定性, 接触面, 发热量

Abstract:

Aiming at the problem that the transmission and distribution lines are electrically connected to the hair heat and cause energy loss, the application performance of low melting point alloys in electrical connectors was studied. Low-melting alloys Sn-3.5Ag, Sn-1.6Cu, and Sn-Zn-0.7Cu with good wettability at the copper interface were selected and a joining process in the electrical connection was designed and constructed. The reliability of the interface after connection was judged by using the ERESCO MF4 portable X-ray machine. The SLQ-2000A up-flow experimental system was established and the actual working conditions were simulated. Finally, the low-melting alloy and electric composite grease samples were tested for the heat generation of the test piece during the continuous flow time of 4 hours at a rated flow rate of 180 A. The experimental results showed that the calorific value of the low melting point alloy as the electrical connection joint material is lower than the calorific value of the electric composite grease joint sample.

Key words: electrical connector, low melting point alloy, electric composite grease, thermal stability, contact surfaces, calorific value

中图分类号:

TM24

赵佳丽,尹志宏,张文斌. 低熔点合金在电连接头中的应用性能研究[J]. 电子科技, 2020, 33(3): 66-70.

ZHAO Jiali,YIN Zhihong,ZHANG Wenbin. Study on Application Performance of Low Melting Point Alloy in Electrical Connector[J]. Electronic Science and Technology, 2020, 33(3): 66-70.

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参考文献 16

[1]	王国刚 . 输变电设备电接触过热及劣化机理研究进展[J]. 电力建设, 2013,34(10):24-28.
	Wang Guogang . Progress on electrical contact overheating and deterioration mechanisms of power transmission and transformation equipment[J]. Electric Power Construction, 2013,34(10):24-28.
[2]	Chang J, Wang G, Liu H. Mechanisms analysis and countermeasure of electrical contact overheating of overhead line[C]. Chengdu:International Conference on Power System Technology, 2014.
[3]	刘航, 刘新宽, 刘平 , 等. Fe含量对Al-Fe合金组织及性能的影响[J]. 电子科技, 2016,29(4):6-8.
	Liu Hang, Liu Xinkuan, Liu Ping , et al. Effect of Fe content on micro-structure and electrical properties of Al-Fe aluminum alloys[J]. Electronic Science and Technology, 2016,29(4):6-8.
[4]	郭彬, 刘江涛 . 高压输电线路导线连接点发热问题的分析与探究[J]. 工业控制计算机, 2011,24(12):117-118.
	Guo Bin, Liu Jiangtao . Analysis and exploration of heating problems in connection points of high-voltage transmission line[J]. Industrial Control Computer, 2011,24(12):117-118.
[5]	Lin, Sheng, Lee Lun. Energy savings and emission reduction of nitrogen oxides, particulate matter, and polycyclic aromatic hydrocarbons by adding water-containing acetone and neat soybean oil to a diesel-fueled engine generator[J]. Energy & Fuels, 2010,24(8):4522-4533.
[6]	Li Xingwei, Guo Wang, Cao Qiang . Experimental study on the influence of electrical joint compound on anticorrosion property of electrical contact[J]. Electric Power Construction, 2011,32(8):99-102.
[7]	葛翔宇 . 电力复合脂在输变电设备中的导电理论与润滑技术研究[D]. 北京:华北电力大学, 2016.
	Ge Xiangyu . Study on conductive theory and lubrication technology of power composite grease in power transmission and transformation equipment[D]. Beijing: North China Electric Power University, 2016.
[8]	葛翔宇, 夏延秋, 冯欣 , 等. 锂盐型电力复合脂的导电性和摩擦学性能[J]. 机械工程学报, 2015,51(15):61-66.
	Ge Xiangyu, Xia Yanqiu, Feng Xin , et al. Electrical conductivities and tribological properties of lithium salts conductive grease[J]. Journal of Mechanical Engineering, 2015,51(15):61-66.
[9]	Chen J, Xia Y, Hu Y , et al. Tribological performance and conductive capacity of Ag coating under boundary lubrication[J]. Tribology International, 2017(3):161-172.
[10]	程鹏 . 电缆接头内部缺陷下的电磁-热-力特性及表征方法研究[D]. 重庆:重庆大学, 2016.
	Cheng Peng . Electromagnetic-thermal-force characteristics and characterization methods under internal defects of cable joints[D]. Chongqing:Chongqing University, 2016.
[11]	陆家滨 . 电网变压器类设备接点过热缺陷防范措施[J]. 油气田地面工程, 2012,31(7):64-65.
	Lu Jiabin . Measures to prevent overheating defects of transformer equipment in power grid[J]. Oil-Gas Field Surface Engineering, 2012,31(7):64-65.
[12]	朱迪锋 . 四分裂架空输电线路导线接续管的更换工艺[J]. 浙江电力, 2016,35(6):74-76.
	Zhu Difeng . Replacement technology for conductor connecting pipe of quad-bundle overhead transmission lines[J]. Zhejiang Electric Power, 2016,35(6):74-76.
[13]	李红云, 暴文斐, 粟俊 , 等. 智能输变电设备状态监测技术研究与系统设计[J]. 电子设计工程, 2017,25(20):144-147.
	Li Hongyun, Bao Wenfei, Su Jun , et al. Research and system design of condition monitoring technology for intelligent transmission and distribution equipment[J]. Electronic Design Engineering, 2017,25(20):144-147.
[14]	范颖, 杜双育, 耿大庆 , 等. 一种输变电设备缺陷快速定级方法的研制[J]. 自动化技术与应用, 2016,35(2):40-43.
	Fan Ying, Du Shuangyu, Geng Daqing , et al. Development of a rapid method for defects in power transmission and transformation equipment[J]. Automation Technology and Applications, 2016,35(2):40-43.
[15]	康宁 . 铝铜钎焊用Sn-Zn基无铅钎料的研究[D]. 大连:大连理工大学, 2012.
	Kang Ning . Study on Sn-Zn based lead-free solders for soldering Al and Cu[D]. Dalian:Dalian University of Technology, 2012.
[16]	中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. GB/T 5585.1-2005,电工用铜、铝及其合金母线第1部分:铜和铜合金母线[S]. 北京: 中国标准出版社, 2005.
	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China. GB/T 5585.1-2005 copper or aluminium and its alloy bus bars for electrical purposes-part 1:copper and copper alloy bus bars[S]. Beijing: China Standard Press, 2005.