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Manufacturing method of high-efficiency annular transformer

A toroidal transformer and the technology of its manufacturing method, which are applied in the field of transformers, can solve the problems of short service life, high temperature resistance, moisture resistance, shock resistance, modularization, and low air pressure, etc., and achieve long service life, Good insulation effect

Inactive Publication Date: 2015-03-11
NANTONG XINYUAN ELECTRICAL MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The existing transformers cannot withstand high temperatures, and the entire power supply system cannot meet the requirements for moisture resistance, shock resistance, modularization, and low air pressure, and the service life is short, so maintenance is required

Method used

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Experimental program
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Effect test

Embodiment Construction

[0016] This specific embodiment adopts following technical scheme: its preparation method is:

[0017] Step 1: Make a ring-shaped iron core according to the size, wind the wire through the magnetic core perpendicular to the magnetic direction, and wind around multiple magnetic circuits;

[0018] Step 2: The outer surface of the iron core is covered with a polyurethane foam layer formed by a curing reaction of a polyurethane foaming agent;

[0019] Step 3: Insulation treatment: use insulating varnish for spraying, and then bake after spraying. The baking time is 4-6 hours, and then cool down after baking;

[0020] Step 4: Inspect the iron core produced in Step 3, the qualified ones are ready for use, and the unqualified ones are recycled;

[0021] Step 5: Make the transformer frame, assemble the finished iron core, inspect and pack after the assembly is completed;

[0022] Step 6: Storage: Register the finished transformer and put it into storage.

[0023] The above descript...

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Abstract

The invention discloses a manufacturing method of a high-efficiency annular transformer, and relates to the technical field of transformers. The manufacturing method of the high-efficiency annular transformer comprises the following steps: I, manufacturing an annular iron core according to a size, vertically winding a wire around a magnetic core in a magnetic direction and winding around a plurality of magnetic paths; II, wrapping the outer surface of the iron core with a polyurethane foam layer formed by curing reaction of a polyurethane foaming agent; III, performing insulating treatment: spraying by using an insulating paint, baking for 4-6 hours after spraying, and cooling after baking; IV, checking the iron core manufactured by the step III, drawing the qualified iron core aside for later use and recycling the unqualified iron core; V, manufacturing a transformer frame, assembling the finished iron core, and checking and packaging after the assembly is performed; VI, warehousing: registering and warehousing a finished transformer. The manufacturing method has the advantages of high temperature resistance, good insulation effect, long service life and capability of meeting the requirements on moisture resistance, shock resistance, modularization and low air pressure of an entire power system.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a method for manufacturing a high-efficiency toroidal transformer. Background technique [0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. The main components are primary coil, secondary coil and iron core (magnetic core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. According to the purpose, it can be divided into: distribution transformers, fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, electric furnace transformers, rectifier transformers, etc. [0003] There are about 1,500 transformer manufacturing enterprises in my country. There are nearly 30 manufacturers of transformers above 500kV; about 50 companies of 220kV and abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/00H01F30/16
Inventor 邵海燕
Owner NANTONG XINYUAN ELECTRICAL MFG CO LTD
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