Primary winding structure of voltage transformer

Abstract

The utility model provides a primary winding structure of a voltage transformer, which realizes reduction of interlayer field intensity and optimization of electrical performance of products and comprises a framework and a plurality of copper wires. The framework comprises an inner core for winding the copper wire, limiting discs arranged at the two ends of the inner core, and a plurality of separation discs arranged between the two ends of the inner core; the inner core, the limiting disc and the separating disc are coaxially arranged; the surface of the inner core is coated with capacitor paper, the surface of the separation disc is coated with inner shielding copper foil, and the separation disc is provided with a through hole penetrating through the two end faces of the separation disc. A section of copper wire is wound on the surface of the capacitor paper of each inner core; the initial end of the copper wire during winding is taken as a first wire, the ending end of the copper wire during winding is taken as a tail wire, the two sections of copper wires at the two ends of the separation disc are taken as the first wire and are connected at the through hole, or the tail wires are connected at the through hole.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage transformers, in particular to a primary winding structure of a voltage transformer. Background Art

[0002] The basic structure of a voltage transformer is similar to that of a transformer, with two windings, namely the primary winding and the secondary winding. Both windings are mounted on or wound around an iron core. There is insulation between the two windings and between the windings and the iron core, so that there is electrical isolation between the two windings and between the windings and the iron core. When the voltage transformer is in operation, the primary winding N1 is connected in parallel to the line, and the secondary winding N2 is connected in parallel to the instrument or relay. Therefore, when measuring the voltage on the high-voltage line, although the primary voltage is very high, the secondary voltage is low, which can ensure the safety of the operator and the instrument.

[0003] The current primary winding method of voltage transformers distributes all the copper wires to each layer according to the demand and winds them evenly. Since the number of copper wires required for primary winding is generally large, the average number of copper wires per layer is large, resulting in a high interlayer field strength, which has a lot of impact on the subsequent electrical performance of the product. Utility Model Content

[0004] The utility model aims to provide a primary winding structure of a voltage transformer, solve the problems existing in the prior art, reduce the interlayer field strength, and optimize the electrical performance of the product.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] A primary winding structure of a voltage transformer comprises a skeleton and several sections of copper wire; the skeleton comprises an inner core for winding the copper wire, limit plates arranged at both ends of the inner core, and several separation plates arranged between the two ends of the inner core; the inner core, limit plates and separation plates are coaxially arranged; the surface of the inner core is coated with capacitor paper, the surface of the separation plate is coated with inner shielding copper foil, and the separation plate is provided with through holes penetrating its two end surfaces; a section of copper wire is wound on the surface of the capacitor paper of each inner core; the initial end of the copper wire when winding is taken as the head line and the ending end as the end line, and the two sections of copper wire at both ends of the separation plate are the head line and the head line are connected at the through hole, or the end line and the end line are connected at the through hole.

[0007] The axial spacing between the limiting disk and the separating disk and the axial spacing between adjacent separating disks are equal.

[0008] Copper foil is arranged in the through hole, and the two sections of copper wires at both ends of the separation plate are connected to the copper foil in the through hole at the same time between the first lines, or the last lines are connected to the copper foil in the through hole at the same time; the inner shielding copper foil on the surface of the separation plate is connected to the copper foil in its through hole.

[0009] Preferably, the copper foil is fixed in the through hole by gluing.

[0010] After adopting the above technical solution, the utility model has the following technical effects:

[0011] The utility model replaces the existing common frame with a frame having a plurality of separation plates, and adopts a layered winding method for the copper wire, so as to achieve the purpose of reducing the field strength between layers and realize the effect of optimizing the electrical performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model;

[0013] Figure 2 It is a three-dimensional diagram of the skeleton of a specific embodiment of the utility model;

[0014] Description of Figure Numbers:

[0015] 1----frame; 11---inner core; 12---limiting plate; 13---separating plate; 131--through hole;

[0016] 2----Copper wire;

[0017] 3----Copper foil. DETAILED DESCRIPTION

[0018] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention to be protected.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the embodiments of the present utility model, it should be understood that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use, or is the orientation or position relationship commonly understood by those skilled in the art. It is only to simplify the description for the convenience of describing the embodiments of the present utility model, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present utility model.

[0023] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0027] In addition, the present invention provides examples of various specific processes and materials, but a person skilled in the art may be aware of the application of other processes and / or the use of other materials.

[0028] refer to Figure 1 and Figure 2 As shown, the utility model discloses a primary winding structure of a voltage transformer, comprising a skeleton 1 and a plurality of copper wires 2;

[0029] The skeleton 1 comprises an inner core 11 for winding the copper wire 2, a limiting plate 12 arranged at both ends of the inner core 11, and a plurality of separating plates 13 arranged between the two ends of the inner core 11; the inner core 11, the limiting plate 12 and the separating plates 13 are coaxially arranged; the surface of the inner core 11 is coated with capacitor paper, the surface of the separating plates 13 is coated with inner shielding copper foil, and the separating plates 13 are provided with through holes 131 penetrating through the two end surfaces thereof;

[0030] A section of copper wire 2 is wound on the capacitor paper surface of each inner core 11; the initial end of the copper wire 2 when winding is the head line and the ending end is the tail line, the two sections of copper wire 2 at both ends of the separating plate 13 are the head lines and the head lines are connected at the through hole 131, or the tail lines are connected at the through hole 131.

[0031] Through the above scheme, the utility model replaces the existing ordinary skeleton with a skeleton 1 having a plurality of separation plates 13, and adopts a layered winding method for the copper wire 2, so as to achieve the purpose of reducing the field strength between layers and realize the effect of optimizing the electrical performance of the product.

[0032] The axial spacing between the limiting disk 12 and the separating disk 13 and the axial spacing between adjacent separating disks 13 are equal, so that the inner core 11 can be equally divided into multiple layers by a plurality of separating disks 13, thereby achieving layered winding of the copper wire.

[0033] The through hole 131 is provided with a smooth copper foil 3 without sharp corners. The two sections of copper wires 2 at both ends of the separator 13 are connected to the copper foil 3 in the through hole 131 at the same time as the first lines, or are connected to the copper foil 3 in the through hole 131 at the same time as the last lines, that is, the ends of adjacent copper wires 2 are connected by using the copper foil 3; the inner shielding copper foil on the surface of the separator 13 is connected to the copper foil 3 in its through hole 131. It can be understood that since the adjacent copper wires 2 are connected as the first lines or the last lines, the positions of the through holes 131 of adjacent separators 13 should be one inside and one outside.

[0034] Furthermore, the copper foil 3 is fixed in the through hole 131 by gluing.

[0035] Specific embodiments of the present utility model are shown below.

[0036] (1) preparing a skeleton 1 having a plurality of partition plates 13;

[0037] (2) Pass a smooth copper foil 3 with a thickness of 2 mm, a width of 3 mm, and a length of 6 mm without sharp corners through the through hole 131 of the separator plate 13 and fix it with glue;

[0038] (3) Covering the inner core 11 with capacitor paper, bonding the inner shielding copper foil to the separator 13, and connecting the inner shielding copper foil to the copper foil 3 in the through hole 131;

[0039] (4) Copper wires 2 are wound around each section of the inner core 11, and adjacent copper wires 2 are adjacent in the first line or connected in the last line, and adjacent first lines and last lines are connected to corresponding copper foils 3;

[0040] (5) After winding is completed, wrap it.

[0041] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A primary winding structure of a voltage transformer, characterized in that: Including skeleton and several sections of copper wire; The skeleton comprises an inner core for winding the copper wire, a limiting plate arranged at both ends of the inner core, and a plurality of separating plates arranged between the two ends of the inner core; the inner core, the limiting plate and the separating plates are coaxially arranged; the surface of the inner core is coated with capacitor paper, the surface of the separating plates is coated with inner shielding copper foil, and the separating plates are provided with through holes penetrating the two end surfaces thereof; A section of copper wire is wound on the capacitor paper surface of each inner core; the initial end of the copper wire when winding is the head wire, and the ending end is the tail wire, and the two sections of copper wire at both ends of the separation disk are the head wire and the head wire are connected at the through hole, or the tail wire and the tail wire are connected at the through hole.

2. The primary winding structure of a voltage transformer according to claim 1, characterized in that: The axial spacing between the limiting disk and the separating disk and the axial spacing between adjacent separating disks are equal.

3. The primary winding structure of a voltage transformer according to claim 1, characterized in that: Copper foil is arranged in the through hole, and the two sections of copper wires at both ends of the separation plate are connected to the copper foil in the through hole at the same time between the first lines, or the last lines are connected to the copper foil in the through hole at the same time; the inner shielding copper foil on the surface of the separation plate is connected to the copper foil in its through hole.

4. The primary winding structure of a voltage transformer according to claim 3, characterized in that: The copper foil is fixed in the through hole by gluing.

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