针对目前水下应急抢修焊接作业过程所需线缆繁杂、准备周期长等不利因素，开展无缆水下焊接电源研究，进行电气设计、防水耐压结构设计和磁力接地机构设计。通过将散热元件固定到水冷外壳内壁方式解决水密机壳内的电源散热问题。磁力接地机构则不仅有效缩短焊机输出回路电缆长度，还为潜水员提供临时着力点，便于应急修复作业的开展。所开发的水下焊接电源坚固便携，能承受1MPa水压，防护等级达到IP68，仅由锂电池供电即可完成水下应急修复作业，焊接质量基本满足水下应急修复要求。
Aiming at the unfavorable factors such as the complexity of wires and cables and long preparation cycle in the process of underwater emergency repair welding, the research on underwater welding power source without cables is carried out.The electrical design, waterproof and pressure resistant structure design and magnetic grounding mechanism design are carried out.The problem of power dissipation inside the watertight enclosure is solved by fixing the heat dissipation element to the inner wall of the water-cooled outer enclosure.The magnetic grounding mechanism not only effectively shortens the length of the output circuit cable of the welding machine, but also provides a temporary focus for divers to facilitate the development of emergency repair operations.The developed underwater welding power source is solid and portable, can withstand 1MPa water pressure, and the protection grade reaches IP68.The underwater emergency repair operation can be completed only by the power source of lithium battery, and the welding quality basically meets the requirements of underwater emergency repair.
2022,44(15): 177-180 收稿日期：2022-04-11
DOI：10.3404/j.issn.1672-7649.2022.15.038
分类号：TG434.3
作者简介：薛延华（1974 - ），男，硕士，副教授，研究方向为潜水技术及水下作业装备
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