A transformer coil structure

Abstract

The utility model discloses the technical field of coil structure, specifically a transformer coil structure, the utility model discloses a coil body, the coil body is combined by high voltage coil and medium voltage coil and low voltage coil constitution. The utility model discloses through setting up support mechanism, has set up the I -shaped insulating support strip between high voltage coil, medium voltage coil and low voltage coil, and the support strip equidistance arrangement, thickness is even, can strengthen high voltage coil, medium voltage coil and low voltage coil three bending -resistant, extrusion and heat dissipation, can also prevent each group coil from generating short circuit condition simultaneously. Simultaneously is provided with combination mechanism, and one side of coil usually will set up the lead -out terminal subassembly, is used for the connection of coil winding and external circuit, and the lead -out terminal subassembly is composed of connecting piece no.

Description

Technical Field

[0001] This utility model relates to the field of coil structure technology, specifically a transformer coil structure. Background Technology

[0002] The transformer coil is the core component of a transformer. It is usually made of copper or aluminum wire and achieves functions such as voltage and current transformation through the principle of electromagnetic induction.

[0003] In the existing technology, the coil structure is divided into high-voltage coil and low-voltage coil. Each coil is equipped with an insulation layer. However, the insulation layer is generally soft and shapeless, and is prone to deformation, which can easily lead to contact between the high-voltage coil and the low-voltage coil. Once the high-voltage coil and the low-voltage coil come into contact, it will affect the heat dissipation of both, and in severe cases, it can cause the insulation layer to be broken down, resulting in leakage and short circuit. Utility Model Content

[0004] The purpose of this invention is to provide a transformer coil structure to solve the problems in the prior art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A transformer coil structure includes a coil body, which is composed of a high-voltage coil, a medium-voltage coil, and a low-voltage coil, and a combination mechanism is provided on the right side of the coil body.

[0007] Preferably, the medium-voltage coil is located in the middle of the high-voltage coil and the low-voltage coil, with the high-voltage coil located outside the medium-voltage coil and the low-voltage coil located inside the medium-voltage coil.

[0008] Preferably, the high-voltage coil, medium-voltage coil, and low-voltage coil are all composed of an insulating layer and a winding conductor, with the winding conductor disposed inside the insulating layer.

[0009] Preferably, the high-voltage coil, medium-voltage coil, and low-voltage coil are configured as three groups, with a support bar between each group. The support bar is I-shaped and is arranged vertically at equal intervals between the high-voltage coil and the medium-voltage coil, as well as between the medium-voltage coil and the low-voltage coil.

[0010] Preferably, the combined mechanism includes a connector one disposed on the left side of the coil body. The connector one is respectively installed inside the high-voltage coil and the low-voltage coil. An insulating transition piece is engaged inside the connector one. A bolt one is disposed at the lower left end of the insulating transition piece and the middle part of the connector one.

[0011] Preferably, a second connector is engaged with the upper left side of the insulating transition piece, and a second bolt is provided inside the upper end of the insulating transition piece and the left side of the second connector. An insulating sleeve is installed on the inner side of the second connector by bolts.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model sets up a support mechanism, which sets up I-shaped insulating support bars between the high voltage coil, medium voltage coil and low voltage coil. The protrusions of the support bars contact the outer insulation layer of the coil. At the same time, the support bars are arranged at equal intervals and have uniform thickness, which can enhance the bending resistance, compression and heat dissipation of the high voltage coil, medium voltage coil and low voltage coil, and also prevent short circuits in each group of coils.

[0014] 2. By setting up a combination mechanism, the present invention typically sets a lead-out terminal assembly on one side of the coil for connecting the coil winding to the external circuit. The lead-out terminal assembly consists of a connector one, an insulating transition piece, and a connector two. In order to ensure that the insulating transition piece can be quickly coated with insulating material, the connector one, the insulating transition piece, and the connector two can be easily disassembled. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a front view schematic diagram of the coil structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the high-voltage coil and the medium-voltage coil of this utility model.

[0018] Figure 3 This is a front view cross-sectional view of the coil structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure of the coil structure connector, the insulating transition piece, and the bolt of this utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure of the coil structure connector 2, the insulating sleeve and the bolt 2 of this utility model.

[0021] The attached figures are labeled as follows:

[0022] 1. Coil body; 11. High voltage coil; 12. Medium voltage coil; 13. Low voltage coil; 2. Insulation layer; 21. Winding conductor; 3. Support bar; 4. Assembly mechanism; 41. Connector 1; 42. Insulation transition piece; 43. Bolt 1; 44. Connector 2; 45. Insulation sleeve; 46. Bolt 2. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] To address the problems existing in the prior art, this embodiment provides the following technical solution: a transformer coil structure comprising a coil body 1, which is composed of a high-voltage coil 11, a medium-voltage coil 12, and a low-voltage coil 13. The medium-voltage coil 12 is located in the middle of the high-voltage coil 11 and the low-voltage coil 13. Support bars 3 are arranged vertically at equal distances between the high-voltage coil 11 and the medium-voltage coil 12, as well as between the medium-voltage coil 12 and the low-voltage coil 13. The support bars 3 enhance the overall rigidity of the coil body 1 and improve its heat dissipation. A combination mechanism 4 is provided on the right side of the coil body 1, allowing the insulating transition piece 42 within the combination mechanism 4 to be easily combined and disassembled with the coil body 1. This enables rapid replacement of the insulating transition piece 42 if it malfunctions during the simultaneous installation of multiple coil bodies 1.

[0025] like Figures 1-5 As shown, a coil body 1 is provided, which is composed of a high-voltage coil 11, a medium-voltage coil 12, and a low-voltage coil 13. The medium-voltage coil 12 is located in the middle of the high-voltage coil 11 and the low-voltage coil 13. The high-voltage coil 11 is located on the outermost side of the coil body 1, and the low-voltage coil 13 is located on the innermost side of the coil body 1 and close to the iron core. The high-voltage coil 11, the medium-voltage coil 12, and the low-voltage coil 13 realize voltage transformation and power transmission through electromagnetic induction.

[0026] High voltage coil 11 is usually used as the main power input terminal with the highest voltage level. Low voltage coil 13 is usually directly connected to the load equipment with a lower voltage level. Medium voltage coil 12 is set between high voltage coil 11 and low voltage coil 13 and can supply power to low voltage coil 13 when the circuit breaker of high voltage coil 11 is cut off.

[0027] Meanwhile, the high-voltage coil 11, medium-voltage coil 12, and low-voltage coil 13 are all composed of an insulating layer 2 and a winding conductor 21. The winding conductor 21 is located inside the insulating layer 2, specifically, the winding conductor 21 is wound in multiple layers inside the insulating layer 2, and is usually a conductive material of copper or aluminum strip. The insulating layer 2 is located outside the winding conductor 21, and is usually an insulating material (epoxy alkali-free glass fiber). The outside of the alkali-free glass fiber can be covered with a thin layer of epoxy resin (thickness of 1-3mm), which can give the winding conductor 21 high insulation strength and anti-aging properties. After the epoxy resin is cured, it forms a composite structure with the glass fiber, which will enhance its tensile strength and ensure that the inner winding conductor 21 does not deform under mechanical stress.

[0028] In addition, the high voltage coil 11, the medium voltage coil 12 and the low voltage coil 13 are set in three groups. Each group is provided with a support bar 3. The support bar 3 is set in the shape of an I-beam and is arranged vertically at equal intervals between the high voltage coil 11 and the medium voltage coil 12 and between the medium voltage coil 12 and the low voltage coil 13.

[0029] The protruding part of the support bar 3 contacts the insulation layer 2 provided on the outside of the high voltage coil 11, medium voltage coil 12 and low voltage coil 13, providing uniform support between the high voltage coil 11, medium voltage coil 12 and low voltage coil 13, avoiding stress concentration in a few areas, and improving the overall strength and impact resistance of the coil body 1.

[0030] Secondly, the support bar 3 is made of inorganic or polymer insulating material (epoxy glass cloth board). The support bar 3 is uniformly filled with polymer composite materials such as boron nitride and aluminum oxide. The addition of aluminum oxide can enhance the compressive strength of the support bar 3, and the addition of boron nitride can improve the high-frequency insulation characteristics. At the same time, boron nitride and aluminum oxide have high thermal conductivity, which can improve the heat dissipation efficiency of the support bar 3. Furthermore, the support bar 3 effectively separates the high voltage coil 11, medium voltage coil 12 and low voltage coil 13. There will be gaps between the three groups, which can effectively improve the heat dissipation efficiency of the high voltage coil 11, medium voltage coil 12 and low voltage coil 13.

[0031] Meanwhile, a combination mechanism 4 is provided on the right side of the coil body 1. The combination mechanism 4 includes a connector 41 located on the left side of the coil body 1. The connector 41 is installed on the inner side of the high voltage coil 11 and the low voltage coil 13 respectively. An insulating transition piece 42 is engaged inside the connector 41. A bolt 43 is provided between the lower left end of the insulating transition piece 42 and the middle part of the connector 41. A connector 44 is engaged inside the upper left side of the insulating transition piece 42. A bolt 46 is provided inside the upper end of the insulating transition piece 42 and the left side of the connector 44 for fixing. At the same time, an insulating sleeve 45 is installed inside the connector 44 by bolts.

[0032] The surface of the insulating transition piece 42 is made of insulating material, and conductive leads are provided inside. It can be engaged with the connector 41 on the right side of the coil body 1 through its lower side. The connector 41 also has leads inside, which can connect the leads of the two. Threaded holes are opened in the lower side of the insulating transition piece 42 and the middle of the connector 41. When the lower side of the insulating transition piece 42 is engaged with the connector 41, the threaded holes of the two will fit together. Bolt 43 can be inserted into the threaded holes of the two to tighten and fix them, which can strengthen the connection between the connector 41 and the insulating transition piece 42.

[0033] Meanwhile, threaded holes are also provided on the upper end of the insulating transition piece 42 and the left side of the connector 44. When the upper end of the insulating transition piece 42 and the connector 44 are engaged, the threaded holes of the two can be fitted together. The bolt 46 can be inserted into the fitted threaded hole for limiting. The connector 44 is also provided with a lead wire, so that the lead wires provided on the inner side of the connector 41, the insulating transition piece 42 and the connector 44 can be connected.

[0034] In addition, an insulating sleeve 45 is installed inside the upper end of connector 2 44. The insulating sleeve 45 is used to isolate the lead wire from the grounding part to ensure electrical safety. The insulating transition piece 42 is easy to disassemble and assemble with connector 1 41 and connector 2 44. It is convenient to remove the insulating transition piece 42 separately and spray the outside of it with insulating material.

[0035] The working principle of the transformer coil structure is as follows: The coil body 1 is composed of a high-voltage coil 11, a medium-voltage coil 12, and a low-voltage coil 13. The high-voltage coil 11, medium-voltage coil 12, and low-voltage coil 13 are arranged in three groups. Support bars 3 are arranged vertically at equal distances between each group. The support bars 3 can effectively enhance the strength and heat dissipation of the coil body 1. At the same time, a combination mechanism 4 is set on the right side of the coil body 1 to facilitate the connection between the coil body 1 and the external circuit. The insulating transition piece 42 set in the combination mechanism 4 can be easily disassembled and assembled with the connecting piece 41 and connecting piece 44 set on the right side of the coil body 1. It is convenient to remove the insulating transition piece 42 separately and spray the insulating material on its exterior.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A transformer coil structure, characterized in that: It includes a coil body (1), which is composed of a high-voltage coil (11), a medium-voltage coil (12) and a low-voltage coil (13). A combination mechanism (4) is provided on the right side of the coil body (1).

2. The transformer coil structure according to claim 1, characterized in that, The medium-voltage coil (12) is located in the middle of the high-voltage coil (11) and the low-voltage coil (13). The high-voltage coil (11) is located on the outside of the medium-voltage coil (12), and the low-voltage coil (13) is located on the inside of the medium-voltage coil (12).

3. A transformer coil structure according to claim 2, characterized in that, The high-voltage coil (11), medium-voltage coil (12) and low-voltage coil (13) are all composed of an insulating layer (2) and a winding conductor (21), with the winding conductor (21) located inside the insulating layer (2).

4. A transformer coil structure according to claim 3, characterized in that, The high-voltage coil (11), medium-voltage coil (12) and low-voltage coil (13) are set in three groups, and each group is provided with a support bar (3). The support bar (3) is set in the shape of an I-beam. The support bars (3) are arranged vertically at equal distances between the high-voltage coil (11) and the medium-voltage coil (12) and between the medium-voltage coil (12) and the low-voltage coil (13).

5. A transformer coil structure according to claim 1, characterized in that, The combined mechanism (4) includes a connector (41) disposed on the left side of the coil body (1). The connector (41) is installed on the inner side of the high voltage coil (11) and the low voltage coil (13). An insulating transition piece (42) is engaged inside the connector (41). A bolt (43) is disposed on the lower left end of the insulating transition piece (42) and the middle part of the connector (41).

6. A transformer coil structure according to claim 5, characterized in that, The upper left side of the insulating transition piece (42) is engaged with the connecting piece two (44), and the upper inside of the insulating transition piece (42) and the left inside of the connecting piece two (44) are provided with bolt two (46), and the inner side of the connecting piece two (44) is fitted with an insulating sleeve (45) by bolts.

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