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Continuous pouring coil manufacturing method of cushion block without cake space

A technology for casting coils and manufacturing methods, applied in the field of transformer manufacturing, can solve the problems affecting the advancement of the overall structure, the material saving and energy saving effects are not obvious, and achieve the effect of improving the electrical strength

Active Publication Date: 2014-05-07
JIANGXI GANDIAN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Although the disclosed utility model patents (201220169592.6 dry continuous coil and 201220191929.3 cylindrical cast coil) disclose a continuous cast coil structure, the details of the starting cake, ending cake and tap cake There is no explanation on the principle of material selection and so on, which affects the advanced nature of the overall structure, and the effect of material saving and energy saving is not very obvious

Method used

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  • Continuous pouring coil manufacturing method of cushion block without cake space
  • Continuous pouring coil manufacturing method of cushion block without cake space

Examples

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Embodiment 1

[0030] Example 1: 10KV, D connection method continuous casting coil without spacer between cakes

[0031] A high-voltage 10±2×2.5% KV, D-connection distribution transformer is designed to have a total of 455 turns (basic number of turns 411, tapping number of 11 turns×4), basic number of pie=411 / 9=45.667 (Odd integers have decimals), the decimal is an even integer, that is 46 pie, plus 8 pie, the total number of pie is 54 pie, full-turn pie is 9 turns, the maximum voltage between the pie is 415.8V, tap X1 —X3, X3—X5, X2—X4, X4—X6 are set in the middle to the end of the pie at a position that is 1 pie, and each tap is 11 turns of continuous casting coils without pads between pie blocks, starting from the first The cake is wound to the 24th cake, a total of 24 cakes, wound with a 2.5X12.5 double glass fiber wrap and a film winding wire, and the odd number cake is coiled according to the inverted position, and the even number cake is coiled according to the normal winding. The firs...

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Abstract

The invention discloses a continuous pouring coil manufacturing method of a cushion block without a cake space. According to the continuous pouring coil manufacturing method, an edge winding wire (1) is directly wound on a pouring die; a glass fibre grid (2) coats the pouring die; starting from a starting cake (4) which adopts a cake turning transposition plate, the edge winding wire (1) is continuously wound to an ending cake (5); the ending cake (5) is a normal winding plate; the number of cakes of a basic number of coils is an even integer with decimals after carrying odd number; combined with 8 branching cakes, the total number of the cakes is used for controlling voltage between the cakes to be not higher than 500V; marks X1, X2, X3, X4, X5 and X6 of branching cakes (3) are arranged in the middle; coils are wound continuously along staggered cake turning transposition plate and a normal winding plate; no cushion block is generated between the cakes; after the pouring die is mounted, epoxy resin is poured in vacuum finally; and boosting process at 2-2.5Kg / cm<2> is performed. Due to the continuous pouring coil manufacturing method, an efficient energy-saving transformer is manufactured; and the efficient energy-saving transformer is compact in structure, small in volume, low in material consumption, low in cost and high in electric strength.

Description

technical field [0001] The invention belongs to the field of transformer manufacturing; it relates to a continuous casting coil manufacturing method without spacers between cakes. Background technique [0002] For the high-voltage coils of 10-35KV class epoxy resin casting transformers with large capacity, due to the large current, the copper winding wires used have a cross-sectional area greater than 4 square millimeters, and flat winding wires must be used. In order to make the insulating material operate reliably within the safe voltage range, the coil is usually designed as a multi-segment multi-layer cylindrical structure with more than 2 segments to reduce its inter-layer voltage and inter-segment voltage, and an extra insulating material is placed between the layers And the method of opening the distance between segments to meet the technical requirements of the transformer's electrical strength. The higher the voltage, the more segments. However, the greater the nu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/04H01F41/12
Inventor 魏胜璋魏日成魏海
Owner JIANGXI GANDIAN ELECTRIC
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