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摘要：
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电力机柜制造中，铜排连接一般采用螺钉连接，但其占用空间大而影响足够的电气间隙，在紧凑型机柜结构的限制下，结构设计困难，还会产生潜在的尖端放电，破坏空气绝缘水平。为解决此问题，研究出以铜排连接新工艺代替螺钉连接，包括无钉铆接和有钉铆接。分析了铆接的原理和成形工艺过程，同时，用ANSYS Workbench软件施以力学仿真以核对一致性。随后检测了连接后的振动、温升和电阻效果，并与传统螺钉连接工艺对比以验证其可行性。此外，建立了2种铜排搭接处电场的有限元分析模型，获得了电场分布特征及电场集中区域，这进一步显示了铆钉连接的价值。最后，总结了铆接工艺的优势及适用范围，为产品设计和工艺改进提供更多的技术方案。
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The bus-bars are usually connected by bolts in the manufacturing of electric power switchgear, but the space is occupied too much by bolts to get adequate electrical gap, so it not only makes the design of structure difficult due to the limit of compact switchgear construction, but also the tip discharge is produced potentially to destroy the air insulation level. To solve this problem, a new connection technology for bus-bar was proposed to replace screw connection including riveting without pin and riveting with pin, and the riveting principle and forming process were researched. Meanwhile, the mechanics simulation was conducted by software ANASYS Workbench to check the consistency. Then, the effects of vibration, temperature rising and resistance were tested after connection, and its feasibility was verified by comparing with the traditional screw connection process. In addition, two finite element analysis models of electric field in the connection scope of bus-bars were set up to obtain the distribution characteristic and the concentrated area of electric field, which further showed its value of riveting. Finally, the advantages and application range of riveting technology were summarized, which provided more technical proposals for product design and process improvement.
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基金项目：
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2018年度博瑞公司工艺攻关（GG18018）
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作者简介：
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何峋（1973-），男，学士，高级工程师，E-mail：hex_br@nrec.com
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