Welding method of low-voltage and large-current stranded conductor and bus bar
A welding method and high-current technology, applied in welding equipment, arc welding equipment, gas flame welding equipment, etc., can solve the problems of unfixable multi-strand wires, unsightly appearance, weak welding, etc., and achieve simple and convenient assembly of lead wires. Beautiful appearance, time-saving and labor-saving effect of welding
Active Publication Date: 2015-07-15
天津市特变电工变压器有限公司
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Problems solved by technology
The existing welding methods have technical problems such as multi-strand wires cannot be fixed, the temperature is too high, the solder will flow off directly, the welding is not firm, and the appearance is not beautiful.
Method used
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Embodiment 1
[0023] A low-voltage, high-current multi-strand wire and busbar welding method, the welding process includes two steps, first welding the connection bar and busbar through argon arc welding, and then welding the multi-strand wire and busbar with oxygen acetylene way to weld.
[0024] The connection row is a U-shaped structure, and the U-shaped dimension is consistent with the total width and total thickness of the multi-strand wires. When multi-strand wires and busbars are welded by oxygen acetylene welding, the number of multi-strand wires is 15-50, and the multi-strand wires are inserted into the busbar groove, and the gap is filled with copper wires to ensure Positioning of busbars. The positioned multi-strand wires and busbars are welded by oxygen acetylene welding, and the solder is phosphor copper solder.
[0025] Concrete structure and operation process of the present embodiment:
[0026] See attached Figure 1 to Figure 4 .
[0027] Low-voltage, high-current multi...
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The invention relates a welding method of a low-voltage and large-current stranded conductor and a bus bar and belongs to the technical field of a dry type transformer. The welding method of the low-voltage and large-current stranded conductor and the bus bar is characterized in that a welding process of the stranded conductor and the bus bar comprises the following two steps of: firstly, welding a connecting bar and the bus bar through argon arc welding; and then, welding the stranded conductor and the bus bar by adopting a welding manner of oxygen acetylene. The welding method disclosed by the invention has the advantages that a lead wire is easy and convenient to assemble, the welding saves time and labor, and the position of the product stranded conductor is guaranteed; after the stranded conductor and the bus bar are welded, the arrangement is ordered and attractive; and the welding quality is guaranteed, the cost is reduced, the production efficiency is improved and the like.
Description
technical field [0001] The invention belongs to the technical field of dry-type transformers, in particular to a method for welding low-voltage, high-current multi-strand wires and busbars. Background technique [0002] At present, the low-voltage outgoing wires of dry-type transformers usually use copper discharge wires, and then connect the low-voltage outgoing wires to the lead wires through bolts. This method is simple, convenient and fast, and is usually applied to products with small capacity and low current. For low-voltage and high-current products, due to the large current of the low-voltage coil, the low-voltage coil uses multi-strand wires to lead out, and the multi-strand wires are welded to the lead copper bar, that is, the bus bar. There is greater difficulty in welding the multi-strand wires to the bus bar. The existing welding method has technical problems such as multi-strand wires cannot be fixed, the temperature is too high, the solder directly flows off, ...
Claims
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IPC IPC(8): B23K28/02B23K5/00B23K9/16
Inventor 彭小波宋吉普蔡会艳马广娟
Owner 天津市特变电工变压器有限公司