A combined conductor winding for a traction transformer
By installing heat dissipation fins on the outside of the insulation layer of the combined conductor windings of the traction transformer and using thermally conductive silicone grease, the problem of low heat dissipation efficiency was solved, achieving a more efficient heat dissipation effect and extending the service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG YUANJING ELECTRIC MATERIAL CO LTD
- Filing Date
- 2025-03-05
- Publication Date
- 2026-07-14
Smart Images
Figure CN224501628U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of conductor winding technology, specifically a combined conductor winding for a traction transformer. Background Technology
[0002] Composite conductor windings refer to windings made of a certain number of copper-clad flat wires or enameled wires arranged in a row and tightly wrapped with multiple layers of insulating paper. They are used in the windings of power transformers, traction transformers, etc. Typically, the number of wires in a composite winding is 2-6. The conventional arrangement is parallel, with each conductor running parallel to the others. Generally, bare copper flat wire is used as the conductor, but enameled flat wire or aluminum wire can also be used.
[0003] Existing combined conductor windings used in traction transformers cannot quickly dissipate the heat generated during operation, resulting in low heat dissipation efficiency and a shortened service life. Therefore, there is an urgent need for a new type of combined conductor winding for traction transformers to solve the above-mentioned technical problems. Utility Model Content
[0004] The purpose of this utility model is to provide a combined conductor winding for traction transformers, in order to solve the problem mentioned in the background art that the existing combined conductor windings for traction transformers cannot quickly dissipate the heat generated during operation, resulting in low heat dissipation efficiency and thus shortened service life.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A combined conductor winding for a traction transformer includes an outer insulation layer. Inside the outer insulation layer, a first copper flat conductor, a second copper flat conductor, a third copper flat conductor, and a fourth copper flat conductor are arranged in a row from top to bottom. The outer sides of the first copper flat conductor, the second copper flat conductor, the third copper flat conductor, and the fourth copper flat conductor are all wrapped with a turn insulation layer. The turn insulation layer is located between the first copper flat conductor, the second copper flat conductor, the third copper flat conductor, the fourth copper flat conductor, and the outer insulation layer. A plurality of heat dissipation fins are sleeved along the outer side of the outer insulation layer.
[0007] As a preferred embodiment of this utility model, a plurality of heat dissipation fins are arranged at equal intervals along the outer insulating layer.
[0008] As a preferred embodiment of this utility model, the heat dissipation fins are made of copper.
[0009] As a preferred embodiment of this utility model, the heat dissipation fins are rectangular in shape.
[0010] As a preferred embodiment of this invention, the contact surface between the heat dissipation fins and the outer insulating layer is coated with thermally conductive silicone grease.
[0011] As a preferred embodiment of this utility model, the material of the outer insulating layer is transformer turn-to-turn insulating paper.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] This invention features several heat dissipation fins, which increase the heat dissipation area and allow the heat generated by the wire windings during operation to be dissipated quickly, thereby improving heat dissipation efficiency and extending service life. Attached Figure Description
[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0015] Figure 1 This is a top view of the structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the conductor winding of this utility model;
[0017] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the mid-section structure.
[0018] In the diagram: 1. Outer insulation layer; 2. Heat dissipation fins; 3. First copper flat wire; 4. Second copper flat wire; 5. Third copper flat wire; 6. Fourth copper flat wire; 7. Turn insulation layer. Detailed Implementation
[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. In the embodiments of the present utility model, the different types of cross-sectional lines are not labeled according to national standards, nor do they specify material requirements for the components; they are used to distinguish the cross-sectional views of the components in the drawings.
[0020] Please see Figure 1-3A combined conductor winding for a traction transformer includes an outer insulation layer 1. Inside the outer insulation layer 1, a first copper flat conductor 3, a second copper flat conductor 4, a third copper flat conductor 5, and a fourth copper flat conductor 6 are arranged in a row from top to bottom. The outer sides of the first copper flat conductor 3, the second copper flat conductor 4, the third copper flat conductor 5, and the fourth copper flat conductor 6 are all wrapped with a turn insulation layer 7. The turn insulation layer 7 is located between the first copper flat conductor 3, the second copper flat conductor 4, the third copper flat conductor 5, the fourth copper flat conductor 6, and the outer insulation layer 4. A plurality of heat dissipation fins 2 are sleeved along the outer side of the outer insulation layer 1.
[0021] Among them, several heat dissipation fins 2 are arranged at equal intervals along the outer insulating layer 1.
[0022] The heat dissipation fin 2 is made of copper.
[0023] The heat dissipation fins 2 are rectangular in shape.
[0024] The contact surface between the heat dissipation fins 2 and the outer insulating layer 4 is coated with thermally conductive silicone grease.
[0025] The outer insulating layer 4 is made of transformer turn-to-turn insulating paper.
[0026] The working principle and usage process of this utility model are as follows: First, during operation, the heat generated by the first copper flat wire 3, the second copper flat wire 4, the third copper flat wire 5, and the fourth copper flat wire 6 is transferred to the turn insulation layer 7 and the outer insulation layer 1. Then, the heat is conducted to the heat dissipation fins 2 through the thermally conductive silicone grease applied to the contact surface between the heat dissipation fins 2 and the outer insulation layer 4. The heat dissipation area can be increased by several heat dissipation fins 2, which can quickly dissipate the heat generated by the wire winding during operation, improve the heat dissipation efficiency, and extend the service life. The contents not described in detail in this description belong to the prior art known to those skilled in the art.
[0027] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.
Claims
1. A combined conductor winding for a traction transformer, comprising an outer insulating layer (1), characterized in that: The outer insulating layer (1) has a first copper flat wire (3), a second copper flat wire (4), a third copper flat wire (5) and a fourth copper flat wire (6) arranged in a row from top to bottom. The outer sides of the first copper flat wire (3), the second copper flat wire (4), the third copper flat wire (5) and the fourth copper flat wire (6) are all wrapped with a turn insulating layer (7). The turn insulating layer (7) is located between the first copper flat wire (3), the second copper flat wire (4), the third copper flat wire (5), the fourth copper flat wire (6) and the outer insulating layer (1). A number of heat dissipation fins (2) are sleeved along the outer side of the outer insulating layer (1).
2. A combined conductor winding for a traction transformer according to claim 1, characterized in that: Several heat dissipation fins (2) are arranged at equal intervals along the outer insulating layer (1).
3. A combined conductor winding for a traction transformer according to claim 1, characterized in that: The heat dissipation fins (2) are made of copper.
4. A combined conductor winding for a traction transformer according to claim 1, characterized in that: The heat dissipation fins (2) are rectangular in shape.
5. A combined conductor winding for a traction transformer according to claim 1, characterized in that: The contact surface between the heat dissipation fins (2) and the outer insulating layer (1) is coated with thermally conductive silicone grease.
6. A combined conductor winding for a traction transformer according to claim 1, characterized in that: The outer insulating layer (1) is made of transformer turn-to-turn insulating paper.