Method for making high-voltage converter transformer insulating end loops
A technology of converter transformers and manufacturing methods, which is applied in the direction of transformer/inductor coil/winding/connection, coil manufacturing, etc., can solve the problems of low material utilization rate, high inventory, poor electrical performance, etc., to improve material utilization rate, The effect of high material utilization rate and high dimensional accuracy
Active Publication Date: 2015-03-11
SHANDONG DACHI ELECTRIC
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[0003] There are mainly three traditional manufacturing methods for insulating end rings: Method 1: Stack multi-layer thin cardboard rings to a specified height and then hot press and cut them. The application range of the processing method; Method 2 consists of multiple single-layer paper ring sticky pads arranged to the required height, but this method not only has poor mechanical strength, but also poor electrical performance; Method 3 is directly surrounded by multi-layer cardboard, but this method Poor mechanical strength and poorer dimensional accuracy
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[0016] Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment includes the following steps: cutting the cardboard into strips, gluing and stacking it to a required height, hot pressing it into one, and then milling grooves on the hot-pressed insulation board, adjusting the size, spacing and front and back positions of the milled grooves, so that It can be bent into different prescribed shapes. Milling slots are V-shaped slots that are evenly distributed longitudinally on the insulation board.
[0017] By adopting the manufacturing method of the insulating end ring of the high-voltage converter transformer of the present invention, no leftovers will be produced when the cardboard is cut into strips; the hot pressing process means that the cardboard strips cut in the previous process can be spliced, which makes this scheme usable The leftovers of other insulating components can improve the utilization rate of the overall material of the ...
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The invention belongs to a transformer body insulation processing method, in particular to a method for making high-voltage converter transformer insulating end loops. The method for making high-voltage converter transformer insulating end loops comprises the steps of: cutting paperboards into strips, gluing and laminating the strips to a required height, carrying out hot pressing to produce a whole part, then carrying out groove milling at the insulation board obtained by hot pressing, adjusting groove milling sizes, spacing and front-back positions so that different prescribed shapes can be obtained through bending. The method in the invention for making high-pressure converter transformer insulating end loops is advantaged in that a prepared material is provided with a high material utilization rate, the method can improve the high material utilization rate of other insulation parts, and simultaneously the high-pressure converter transformer insulating end loops have high mechanical strength, high size precision and good manufacturability.
Description
(1) Technical field [0001] The invention belongs to a method for treating insulation of a transformer body, in particular to a method for manufacturing an insulating end ring of a high-voltage converter transformer. (2) Background technology [0002] With the increase of power consumption and the need for energy saving and consumption reduction, the capacity of a single transformer is continuously increasing. Especially for ultra-UHV converter transformers, not only is the capacity of a single unit large, but also because of the high voltage and complex structure, the size of the insulating parts is huge. Among all kinds of insulating parts, the end ring has become the most frequently used and indispensable insulating component because of its simple manufacturing process, convenient installation and high mechanical strength. [0003] There are mainly three traditional manufacturing methods for insulating end rings: Method 1: Stack multi-layer thin cardboard rings to a s...
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IPC IPC(8): H01F41/12H01F27/32
Inventor 马立明侯世勇王江涛祝真涛
Owner SHANDONG DACHI ELECTRIC