Novel rectifier transformer with low-voltage coil transposition structure

Abstract

The utility model relates to the field of rectifier transformers, and discloses a novel rectifier transformer with a low-voltage coil transposition structure, which comprises 16 wires wound in parallel, the transposition span of the wires is doubled through transposition positions, the span between the transposition positions is L / 8, the end parts of the wires are in contact with end insulators, and the end insulators are arranged at the two ends of the wires. Paper filler strips are arranged between the transposition positions, the wires are divided into two groups along two circles of the circumference of the coil for transposition, and multiple groups of wires are arranged. According to the utility model, the transposition span is doubled, so that the requirement of wire transposition spacing is met, and mutual extrusion during wire transposition is effectively avoided, so that the transposition operation is more convenient, fine shaping treatment is not needed, the operation time is greatly saved, and meanwhile, the insulation damage and short circuit risk caused by the wire transposition problem is reduced; and the operation safety of the transformer is remarkably improved, and a powerful guarantee is provided for stable operation of the transformer.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectifier transformer field especially relates to a novel low voltage coil transposition structure rectifier transformer. BACKGROUND

[0002] Rectifier transformer is the power transformer of rectifier equipment, and the rectifier equipment is characterized in that the primary side inputs alternating current, and the secondary side outputs direct current after passing through rectifier element, and it is mainly used for converting the alternating voltage of power grid into alternating voltage suitable for rectifier device to meet the power supply demand of direct current electrical equipment (such as electrolysis, electroplating, direct current motor etc.

[0003] In the prior art, the following defects exist: each transposition pitch of the traditional transposition structure cannot completely meet the wire transposition spacing requirement, which can lead to steep transposition transition, insufficient safety distance between adjacent transpositions, and further lead to the situation that the wires are pressed against each other, which not only makes the transposition operation extremely inconvenient, needs careful shaping treatment, increases the operation time, and even can not transposition, and when the transformer is running, due to the influence of wire stress and vibration, the insulation at the transposition position is easy to be damaged, thereby causing short circuit, and seriously hidden dangers for the safe operation of the transformer. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a novel low voltage coil transposition structure rectifier transformer, which aims at improving the problems of steep transposition transition of the traditional low voltage layer type coil, insufficient safety distance between adjacent transpositions and mutual pressing of the wires in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a novel low voltage coil transposition structure rectifier transformer, comprising a wire, the wire is 16 turns, the wire is increased by one time through the transposition pitch at the transposition position, the pitch between the transposition positions is L / 8, and the end of the wire is in contact with the end insulation.

[0006] Further description of the above technical scheme is as follows:

[0007] Paper mat strips are arranged between the transposition positions.

[0008] Further description of the above technical scheme is as follows:

[0009] The wire transposition is carried out in two groups along the circumference of the coil, the wire is provided with multiple groups, one group of the wire is transposed once along the upper part of the circumference at the transposition center of 1 / 2 turns of each layer.

[0010] Further description of the above technical scheme is as follows:

[0011] One group of the conductor is transposed once along the lower part of the circle at the center of 1 / 2 line turn transposition in each layer.

[0012] As a further description of the above technical solutions:

[0013] The paper mat strip is 0.2DMD-0.3DMD paper, which is used to improve the insulation strength.

[0014] The utility model has the advantages of:

[0015] 1、The utility model discloses a transposition pitch is increased by one time, meets the requirement of conductor transposition spacing, effectively avoids the mutual extrusion when the conductor is transposed, which makes the transposition operation more convenient, and detailed shaping treatment is not needed, greatly saves the operation time, reduces the insulation damage and short circuit risk caused by the conductor transposition problem, and the safety of transformer operation is improved, which provides a powerful guarantee for the stable operation of the transformer.

[0016] 2、The utility model discloses a paper mat strip is used at the transposition position to improve the insulation strength, compared with the traditional 0.5 paperboard paper groove, the mechanical strength is higher, and the insulation and electrical performance are better, and the overall structure makes the layer type coil winding simple, which helps to improve the production efficiency and has high application value in the transformer manufacturing field. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A novel low-voltage coil transposition structure rectifier transformer transposition structure plane development schematic view is provided for the utility model;

[0018] Figure 2 A traditional low-voltage coil transposition structure schematic view of a novel low-voltage coil transposition structure rectifier transformer is provided for the utility model;

[0019] Figure 3 A plurality of conductor overall display schematic view of a novel low-voltage coil transposition structure rectifier transformer is provided for the utility model;

[0020] Figure 4 A conductor overall display schematic view of a novel low-voltage coil transposition structure rectifier transformer is provided for the utility model.

[0021] LEGEND:

[0022] 1, end insulation;2, conductor;3, transposition position;4, paper mat strip. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] With reference to Figures 1-3 The utility model provides an embodiment: a novel low -voltage coil transposition structure rectifier transformer, including wire 2, wire 2 is 16 and is wound, wire 2 is transposed pitch interval and is increased by one, the transposition interval of wire 2 meets the size required by the width b of wire 2 transposition, there is enough space between transposition, and the pitch interval between transposition position 3 is L / 8, increases the distance used by the pitch interval, reduces the contact or extrusion between wire 2, and wire 2 is contacted with end insulation 1 at the end, paper mat strip 4 is arranged between transposition position 3, paper mat strip 4 is mainly used between wire 2, guarantees the insulation between it, wire 2 transposition is along the circumference 2 weeks and is divided into 2 groups, wire 2 is provided with multiple groups, and one group of wire 2 is transposed along the upper part of the circumference at every layer 1 / 2 turns transposition center, and one group of wire 2 is transposed along the lower part of the circumference at every layer 1 / 2 turns transposition center.

[0025] With reference to Figures 1-3 Paper mat strip 4 is 0.2DMD-0.3DMD paper, which is used to improve the insulation strength.

[0026] Working principle: first wire 2 is 16 and is wound, transposition is along the circumference 2 weeks and is divided into 2 groups, one group of wire 2 is transposed along the upper part of the circumference at every layer 1 / 2 turns transposition center, and the other group is transposed along the lower part of the circumference at the corresponding position, by increasing the transposition pitch interval to L / 8, effectively meet the wire 2 transposition interval requirement, this avoids the transposition transition steep in the traditional transposition structure due to the insufficient pitch interval, and the mutual extrusion of wire 2, paper mat strip 4 of 0.2DMD-0.3DMD paper is arranged between transposition position 3, improves the insulation strength, and the mechanical and electrical properties are superior to the traditional 0.5 paperboard paper groove, the optimization structure makes the layer type coil winding simple, the current distribution is more uniform, reduces the insulation damage and short circuit risk caused by poor transposition.

[0027] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A novel low voltage coil commutation structure rectifier transformer comprising a conductor (2), characterized in that: The conductor (2) is 16 and winding, the conductor (2) through the transposition position (3) transposition pitch increases by one, the pitch between the transposition position (3) is L / 8, the end of the conductor (2) contact end insulation (1).

2. The novel low voltage coil commutation structure rectifier transformer as claimed in claim 1, wherein: The transposition position (3) is provided with paper mat strip (4).

3. The novel low voltage coil commutation structure rectifier transformer as claimed in claim 1, wherein: The conductor (2) transposition along the coil circumference 2 weeks group transposition, the conductor (2) is provided with a plurality of groups, wherein a group of the conductor (2) at every layer 1 / 2 wire turn transposition center along the upper part of the circumference transposition once.

4. The novel low voltage coil commutation structure rectifier transformer as claimed in claim 1, wherein: One of the groups of the conductor (2) at every layer 1 / 2 wire turn transposition center along the lower part of the circumference transposition once.

5. The novel low voltage coil commutation structure rectifier transformer as claimed in claim 2, wherein: The paper mat strip (4) is 0.2DMD-0.3DMD paper, used to improve the insulation strength.

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