A method for manufacturing an insulating cylinder of a three-dimensional wound iron core resin insulated dry-type transformer
A three-dimensional wound iron core and dry-type transformer technology, which is applied in the field of transformers, can solve the problems of high cost of hard insulating cylinders, troublesome operation, and increased product costs, and achieve the effects of convenient on-site operation, simple manufacturing process, and low material cost
Active Publication Date: 2015-12-30
NANNING NANTE TRANSFORMER MFG
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Problems solved by technology
The common practice in the prior art is to place two semicircular hard insulating cylinders between the high-voltage coil and the low-voltage coil when assembling the transformer body, and then glue the butt joints of the hard insulating cylinders with a sealing plate. Combined, the operation is more troublesome, and the cost of the hard insulating cylinder is high, which increases the cost of the product
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[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0029] Such as figure 1 As shown, the present invention provides a method for manufacturing an insulating cylinder of a three-dimensional wound iron core resin insulated dry-type transformer, which is characterized in that the three-dimensional wound iron core 1 includes three iron core columns 17, and for each iron core column, the insulating cylinder The specific production process is:
[0030] (1) A low-voltage coil 2 is pre-wound on the iron core column, and a plurality of temporary stays 3 are arranged on the outside of the low-voltage coil, and at least one layer of epoxy prepreg is wound on the outside of the plurality of temporary stays. Insulating tape made of material, thereby forming an insulating cylinder to be cured on the outside of a plurality of temporary sta...
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Abstract
The invention discloses a production method for an insulating cylinder of a three-dimensional roll-core resin-insulation dry-type transformer. A three-dimensional roll core comprises three core limbs. For each core limb, the specific production process of the insulating cylinder includes: (1) winding a low-voltage coil on the core limb in advance, then arranging multiple temporary support strips on the outer side of the low-voltage coil, and winding at least one layer of insulating tape made of epoxy prepreg on the outer sides of the temporary support strips so as to form a to-be-cured insulating cylinder on the outer sides of the temporary support strips; (2) winding a high-pressure coil on the outer side of the to-be-cured insulating cylinder which completely isolates the low-pressure coil and the high-pressure coil; (3) after performing high-temperature curing treatment on the transformer, forming a hard insulating cylinder through the to-be-cured insulating cylinder; (4) pulling the temporary support strips out of the hard insulating cylinder. The production process of the insulating cylinder of the transformer is simple, field operation is facilitated, and material cost of the insulating barrel is low.
Description
technical field [0001] The invention relates to the technical field of transformers, in particular to a method for manufacturing an insulating cylinder of a three-dimensional wound iron core resin-insulated dry-type transformer. Background technique [0002] Since the high and low voltage coils of the three-dimensional wound core resin insulated dry-type transformer are all wound on the core column, after the low voltage coil is wound, the high voltage coil is wound outside the low voltage coil, and the low voltage coil and high voltage coil are wound and cured. Then remove the gear baffle. When assembling the device body, an insulating cylinder should be placed between the high-voltage coil and the low-voltage coil, and the insulating cylinder plays the role of electrical insulation between the high-voltage coil and the low-voltage coil; since the upper and lower iron yokes of the three-dimensional wound iron core are closed, So a complete closed cylindrical insulating cyl...
Claims
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IPC IPC(8): H01F41/12
Inventor 黎斌贺银涛高伟
Owner NANNING NANTE TRANSFORMER MFG