High-voltage coil air passage placing structure

Abstract

The invention belongs to the technical field of epoxy pouring dry-type power transformers, in particular to a high-voltage coil air passage placing structure which comprises a high-voltage coil and anair passage. The front surface of the high-voltage coil is provided with the through air passage, an air passage square pipe is installed in the air passage and is fixedly connected with the high-voltage coil, and an I-shaped supporting strip is installed at the side, close to the air passage square pipe, of the air passage. The wire is wound into the air passage, an internal insulator is placed,then an air passage square tube is placed in the air passage, and then another I-shaped supporting strip is placed, and the thickness of the I-shaped supporting strip is matched with that of the airpassage, so that the I-shaped supporting strip can be stably fixed in the air passage, the conection of the I-shaped supporting strips and the high-voltage coil are stable, and the air channel squaretubes are convenient to plug and pull. By continuously winding at the third section and the fourth section, and adopting the mode that one air channel square tube is arranged between every two I-shaped supporting strips, wires are prevented from being cut off and welded, the winding time of the coil is shortened, and the product quality is improved.

Description

technical field [0001] The application belongs to the technical field of epoxy casting dry-type power transformers, and in particular relates to a high-voltage coil airway placement structure. Background technique [0002] Epoxy dry-type power transformers are used as transformer insulation materials. Epoxy resin combined with off-duty fibers has the characteristics of being flammable and easy to extinguish, and will not cause arcs due to short circuits, flame-proof and explosion-proof. The transformer has the advantages of oil-free, fireproof, maintenance-free, safe and reliable. The products are used in high-rise buildings, commercial centers, hospitals, airports, stations, subways, ships, chemicals, tunnels, mines and residential quarters, etc., where fire protection is strictly required. It can also be used as a replacement product for oil-immersed transformers. It is used in places that require oil-free, maintenance-free or anti-theft requirements. Dry-type transformers...

AI Technical Summary

Problems solved by technology

[0003] Before placing the wire in the original high-voltage coil airway, the user needs to cut the wire, put it into the airway, and then weld the wire together, repeating this step in turn. The 10KV high-voltage coil is generally divided into 4 sections, so it needs to be spliced ​​4 times. If the voltage level is higher, more wires are spliced, which not only increases the man-hours of coil winding, but also causes local overheating of the transformer during welding, increased partial discharge and other quality risks, which reduces the quality of the product

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