High-efficiency energy-saving transformer winding

Abstract

The high-efficiency energy-saving transformer winding comprises a high-voltage coil, an outer insulating layer, a low-voltage coil, an inner insulating layer and an iron core are sequentially arranged in the high-voltage coil from outside to inside, the inner insulating layer comprises an inner insulating plate, an inner wire groove and an inner oil groove, the inner wire groove is formed in the circumferential surface of the inner insulating plate, and the inner oil groove is formed in the circumferential surface of the inner insulating plate. The inner wire groove is spiral, and an inner oil groove is formed in the top of the inner insulating plate. By arranging the high-voltage coil, the iron core, the inner insulating layer, the low-voltage coil and the outer insulating layer, the inner insulating layer and the outer insulating layer form a more uniform supporting structure, and the inner insulating layer and the outer insulating layer are both provided with the wire grooves, so that the low-voltage coil and the high-voltage coil can be uniformly distributed along the wire grooves; the insulating oil can be uniformly distributed between the insulating layer and the coil, so that the heat dissipation efficiency of the coil and the overall performance and the assembly efficiency of the winding are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a high-efficiency energy-saving transformer winding. Background Art

[0002] Transformer winding refers to the circuit part of the transformer, which is wound by copper or aluminum wire with high conductivity and is used in power systems. The winding should have sufficient insulation strength, mechanical strength and heat resistance. Windings are usually divided into two types: layer type and pancake type. The turns of the winding are arranged in sequence along its axial direction and wound continuously, which is called layer winding. Generally, each layer of the layer winding is like a cylinder, so the winding composed of two layers is called double-layer cylindrical type; the winding composed of multiple layers is called multi-layer cylindrical type.

[0003] In the existing high-efficiency and energy-saving transformer windings, there are generally insulating layers between layers and between high-voltage coils and low-voltage coils. The insulating layers need to be wound up layer by layer, which makes the winding of the coils very inconvenient and easily causes uneven distribution of the coils. Moreover, the coils will generate a lot of heat when working, which cannot be discharged in time, greatly reducing the performance of the windings. Utility Model Content

[0004] The utility model aims to provide a high-efficiency and energy-saving transformer winding, in which an inner insulating layer and an outer insulating layer form a more uniform supporting structure, and wire grooves are arranged on the inner insulating layer and the outer insulating layer, so that the low-voltage coil and the high-voltage coil can be evenly distributed along the wire grooves, and oil grooves are arranged through the inner insulating layer and the outer insulating layer from top to bottom, so that the insulating oil can be evenly distributed between the insulating layer and the coil, thereby improving the heat dissipation efficiency of the coil and the overall performance of the winding and the assembly efficiency.

[0005] To achieve the above-mentioned purpose, a high-efficiency and energy-saving transformer winding is provided, comprising: a high-voltage coil, wherein an outer insulating layer, a low-voltage coil, an inner insulating layer and an iron core are sequentially arranged inside the high-voltage coil from the outside to the inside, wherein the inner insulating layer comprises an inner insulating plate, an inner wire groove and an inner oil groove, wherein the inner wire groove is arranged on the circumferential surface of the inner insulating plate, wherein the inner wire groove is in a spiral shape, wherein an inner oil groove is arranged on the top of the inner insulating plate, wherein the inner oil groove penetrates the inner wire groove up and down, wherein the outer insulating layer comprises an outer insulating plate, an outer wire groove and an outer oil groove, wherein the outer wire groove is arranged on the circumferential surface of the outer insulating plate, wherein the outer wire groove is in a spiral shape, wherein an outer oil groove is arranged on the top of the outer insulating plate, wherein the outer oil groove penetrates the outer wire groove up and down.

[0006] According to the high-efficiency energy-saving transformer winding, the outer insulating layer, the low-voltage coil, the inner insulating layer and the iron core are nested and connected in sequence from the outside to the inside, which is more convenient in assembly and disassembly.

[0007] According to the high-efficiency energy-saving transformer winding, the high-voltage coil and the low-voltage coil are both oxygen-free copper wires and are distributed in an up-and-down spiral shape.

[0008] According to the described high-efficiency energy-saving transformer winding, the wires of the high-voltage coil are embedded in the outer wire slots of the outer insulation layer, which not only makes the wire distribution of the high-voltage coil more uniform, but also forms more effective and uniform support for the high-voltage coil.

[0009] According to the described high-efficiency energy-saving transformer winding, the conductors of the low-voltage coil are embedded in the inner wire grooves of the inner insulating layer, which not only makes the conductor distribution of the low-voltage coil more uniform, but also forms a more effective and uniform support for the low-voltage coil, thereby improving the overall performance of the winding.

[0010] According to the described high-efficiency energy-saving transformer winding, the number of the inner oil grooves is multiple and evenly distributed in an annular shape on the inner insulating plate, the number of the outer oil grooves is multiple and evenly distributed in an annular shape on the outer insulating plate, and when the winding is placed inside the transformer, the inner oil grooves and the outer oil grooves are filled with insulating oil, which can bring out the heat generated by the high-voltage coil and the low-voltage coil, thereby improving the heat dissipation efficiency.

[0011] The above scheme has the beneficial effects: by arranging the high-voltage coil, the iron core, the inner insulating layer, the low-voltage coil and the outer insulating layer, the inner insulating layer and the outer insulating layer form a more uniform supporting structure, and wire grooves are arranged on the inner insulating layer and the outer insulating layer, so that the low-voltage coil and the high-voltage coil can be evenly distributed along the wire grooves, and oil grooves are arranged through the inner insulating layer and the outer insulating layer from top to bottom, so that the insulating oil can be evenly distributed between the insulating layer and the coil, thereby improving the heat dissipation efficiency of the coil, the overall performance of the winding and the assembly efficiency.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a front view of a high-efficiency energy-saving transformer winding of the utility model;

[0015] Figure 2 This is a front view of the inner insulation layer of a high-efficiency energy-saving transformer winding of the utility model

[0016] Figure 3 This is a front view of the outer insulation layer of a high-efficiency energy-saving transformer winding of the utility model;

[0017] Figure 4 This is a top view of the outer insulation layer of a high-efficiency energy-saving transformer winding of the utility model;

[0018] Figure 5This is a cross-sectional view of a high-efficiency energy-saving transformer winding of the utility model.

[0019] Legend:

[0020] 1. High-voltage coil; 2. Iron core; 3. Inner insulation layer; 301. Inner insulation board; 302. Inner wire slot; 303. Inner oil tank; 4. Low-voltage coil; 5. Outer insulation layer; 501. Outer insulation board; 502. Outer wire slot; 503. Outer oil tank. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-4 The utility model embodiment provides a high-efficiency energy-saving transformer winding, which includes: a high-voltage coil 1, wherein the interior of the high-voltage coil 1 is sequentially provided with an outer insulating layer 5, a low-voltage coil 4, an inner insulating layer 3 and an iron core 2 from the outside to the inside, the high-voltage coil 1 and the low-voltage coil 4 are both oxygen-free copper wires, and are distributed in an up-and-down spiral shape, the inner insulating layer 3 includes an inner insulating plate 301, an inner wire groove 302 and an inner oil groove 303, the inner wire groove 302 is provided on the circumferential surface of the inner insulating plate 301, the inner wire groove 302 is spiral, and the top of the inner insulating plate 301 is provided with an inner oil groove 303, The inner oil groove 303 penetrates the inner wire groove 302 up and down, and there are multiple inner oil grooves 303, which are evenly distributed in an annular shape on the inner insulating plate 301. The outer insulating layer 5 includes an outer insulating plate 501, an outer wire groove 502 and an outer oil groove 503. The outer wire groove 502 is provided on the circumferential surface of the outer insulating plate 501, and the outer wire groove 502 is spiral. The outer oil groove 503 is provided on the top of the outer insulating plate 501, and the outer oil groove 503 penetrates the outer wire groove 502 up and down, and there are multiple outer oil grooves 503, which are evenly distributed in an annular shape on the outer insulating plate 501.

[0023] The outer insulating layer 5 , the low-voltage coil 4 , the inner insulating layer 3 and the iron core 2 are nested and connected in sequence from the outside to the inside. The wire of the high-voltage coil 1 is embedded in the outer wire groove 502 of the outer insulating layer 5 , and the wire of the low-voltage coil 4 is embedded in the inner wire groove 302 of the inner insulating layer 3 .

[0024] The outer insulating plate 501 separates the low-voltage coil 4 from the iron core 2, and the inner insulating plate 301 separates the high-voltage coil 1 from the low-voltage coil 4. The outer insulating plate 501 and the inner insulating plate 301 form a more uniform and effective support for the inner and outer coil parts. At the same time, the wires of the low-voltage coil 4 and the high-voltage coil 1 are evenly distributed in the inner wire groove 302 of the inner insulating layer 3 and the outer wire groove 502 of the outer insulating layer 5, so that the winding and distribution of the wires are more uniform, and the outer oil groove 503 running through the upper and lower parts improves the heat dissipation efficiency of the wires.

[0025] Working principle: The inner insulating layer 3 is sleeved on the iron core 2, and the wire is evenly wound along the inner wire groove 302 on the inner insulating layer 3 to form a low-voltage coil 4, and then the outer insulating layer 5 is sleeved on the low-voltage coil 4, and the wire is evenly wound along the outer wire groove 502 on the outer insulating layer 5 to form a high-voltage coil 1, thereby completing the assembly of the winding. When the winding is placed inside the transformer, the insulating oil inside the transformer fills the oil grooves in the inner insulating layer 3 and the outer insulating layer 5, so that the heat of the winding can be dissipated.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A high-efficiency energy-saving transformer winding, characterized in that: include: A high-voltage coil (1), wherein the interior of the high-voltage coil (1) is provided with an outer insulating layer (5), a low-voltage coil (4), an inner insulating layer (3) and an iron core (2) in sequence from the outside to the inside, the inner insulating layer (3) comprises an inner insulating plate (301), an inner wire groove (302) and an inner oil groove (303), the inner wire groove (302) is provided on the circumferential surface of the inner insulating plate (301), the inner wire groove (302) is spiral-shaped, and the inner oil groove (303) is provided on the top of the inner insulating plate (301). The inner oil groove (303) penetrates the inner wire groove (302) vertically, the outer insulating layer (5) comprises an outer insulating plate (501), an outer wire groove (502) and an outer oil groove (503), the outer wire groove (502) is arranged on the circumferential surface of the outer insulating plate (501), the outer wire groove (502) is spiral-shaped, the outer oil groove (503) is arranged on the top of the outer insulating plate (501), and the outer oil groove (503) penetrates the outer wire groove (502) vertically.

2. The high-efficiency energy-saving transformer winding according to claim 1, characterized in that: The outer insulating layer (5), the low-voltage coil (4), the inner insulating layer (3) and the iron core (2) are nested and connected in sequence from the outside to the inside.

3. The high-efficiency energy-saving transformer winding according to claim 1, characterized in that: The high-voltage coil (1) and the low-voltage coil (4) are both oxygen-free copper conductors and are distributed in an up-and-down spiral shape.

4. The high-efficiency energy-saving transformer winding according to claim 3, characterized in that: The conducting wires of the high-voltage coil (1) are embedded in the outer wire grooves (502) of the outer insulating layer (5).

5. The high-efficiency energy-saving transformer winding according to claim 3, characterized in that: The conducting wires of the low-voltage coil (4) are embedded in the inner wire groove (302) of the inner insulating layer (3).

6. The high-efficiency energy-saving transformer winding according to claim 1, characterized in that: The number of the inner oil grooves (303) is multiple and evenly distributed in an annular shape on the inner insulating plate (301); the number of the outer oil grooves (503) is multiple and evenly distributed in an annular shape on the outer insulating plate (501).

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