Novel continuous coil structure
By using a three-fold structure in the transformer coil and a T-shaped strap and oil channel pad on the winding mold, the accuracy of turns adjustment and operation convenience are achieved, and the temperature rise and safety of the coil are improved.
Patent Information
- Application Number
- CN202422266016.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The number of wire turns adjustments in the existing continuous coils are not fine enough, resulting in uneven temperature rise of the transformer coil, making it difficult to choose a suitable wire gauge, affecting the temperature rise performance of the transformer.
The number of wires in the wire group is multiples of three, and by dividing into one-third and two-thirds of the wire parts, the number of turns adjustments such as 1 turn, 1+1/3 turns, 1+2/3 turns, etc. are achieved. Combined with the T-shaped straps and oil channel pads on the winding mold, the distribution and insulation protection of the wire cake are optimized.
It realizes the accuracy of wire turns adjustment and the convenience of operation, improves the temperature rise performance of the transformer coil, and improves the mechanical strength and safety of the coil.
Smart Images
Figure CN223155796U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of transformer coils, and in particular to a novel continuous coil structure. Background Art
[0002] A transformer continuous coil is generally formed by continuously winding a single or multiple wires, and is a typical pancake coil; each turn of wire is continuously wound in the radial direction to form a wire pancake, and multiple positive and negative wire pancakes are axially overlapped to form a continuous coil.
[0003] Reference Figure 1 and Figure 2 , the existing continuous coil includes a winding mold 1 and several wire pancakes 2. The wire pancakes 2 are distributed along the axis of the winding mold 1, and the wire pancakes 2 are wound by a wire group 21; the wire pancakes 2 are all wound with integer turns. Sometimes the number of pancakes between two adjacent integer turns differs too much, resulting in too large a difference in the wire width of the electromagnetic wire, making it difficult to select a suitable wire gauge. Moreover, since the temperature rise of the transformer continuous coil is linearly related to the number of turns per pancake, the above problems will also have an adverse impact on the temperature rise of the transformer coil. Summary of the Utility Model
[0004] In order to improve the temperature rise of the transformer coil, this application provides a novel continuous coil structure.
[0005] A novel continuous coil structure provided by this application adopts the following technical solution:
[0006] A novel continuous coil structure includes a winding mold, on which several wire pancakes are arranged along the axis direction of the winding mold. The wire pancakes are wound by a wire group, and the wire group includes several detachable wires. The number of wires is a multiple of three, and the wire group can be wound into the wire pancakes with N turns, N + 1 / 3 turns, N + 2 / 3 turns by splitting the wires.
[0007] Limited by the wire gauge of the transformer electromagnetic wire, the thickness and width of the coil wound in the transformer have a range, neither too thin nor too thick, neither too wide nor too narrow. Therefore, it is only possible to control the temperature rise of the transformer within a suitable range by adjusting the number of wires on each core column and the number of wire windings.
[0008] By adopting the above technical solution, the number of wires in the wire group is set as a multiple of three, and then multiple wires are divided into one-third wire parts and two-thirds wire parts by different numbers of wires. Thus, compared with the traditional continuous coil where only integer-turn coil adjustment is possible, the above coil structure can achieve turn adjustments such as 1 turn, 1 + 1 / 3 turns, 1 + 2 / 3 turns, and so on, making the adjustment range more refined and accurate, and the operation is also more quick and convenient, improving the temperature rise of the transformer coil.
[0009] Optionally, the winding mold includes a cylinder, a paper tube, and a plurality of T-shaped braces. The paper tube is sleeved on the cylinder, and the plurality of T-shaped braces are evenly distributed circumferentially along the axis of the cylinder. The T-shaped braces are arranged on the paper tube, and the wire group is wound on the T-shaped braces.
[0010] By adopting the above technical solution, the paper tube is an insulating part for protecting the wire cake formed by winding the wire group. The T-shaped braces are arranged on the paper tube and can be used to support the wire cake formed by winding the wire group, and a gap is formed between the wire cake and the paper tube to provide a space for the transformer oil to cool, ensuring the long-term stable and safe operation of the coil.
[0011] Optionally, a plurality of oil duct pads are arranged between the connected wire cakes, and the plurality of oil duct pads correspond to the plurality of T-shaped braces one by one. The oil duct pads are arranged on the T-shaped braces.
[0012] By adopting the above technical solution, the oil duct pads are used to control the distance between adjacent wire cakes, reduce the deformation and movement of the coil during transportation, thereby improving the performance and safety of the transformer. Moreover, the oil duct pads provide insulation protection, reduce the contact between adjacent wire cakes, and reduce the generation of short circuits and arcs.
[0013] Optionally, the oil duct pads are made of insulating cardboard.
[0014] By adopting the above technical solution, the oil duct pads are made of insulating cardboard with a relatively high density, which can better support the wire cakes. Moreover, the insulating cardboard has insulation properties, making the oil duct pads more reasonable.
[0015] Optionally, the oil duct pads are trapezoidal, and the short sides of the oil duct pads are arranged on the T-shaped braces.
[0016] By adopting the above technical solution, there is a large circumferential difference between the inner diameter turns and the outer diameter turns of the wire cake formed by winding the wire group, and the percentage of the pressing area of the pads for the inner diameter turns and the outer diameter turns in the total area of the turn is quite different, resulting in uneven pressing force. The trapezoidal oil duct pads can reduce the percentage of the pressing area of the pads for the inner diameter turns and the outer diameter turns in the total area of the turn, making the pressing force of the wire coil more uniform and the mechanical strength more reliable.
[0017] Optionally, grooves are formed on the oil duct pads. The grooves are T-shaped and are matched with the T-shaped braces.
[0018] By adopting the above technical solution, after the staff completes the winding of the wire cake of one layer, the oil duct spacer is slid into the groove, and the oil duct spacer is placed on the wire cake of the wire. Then, the wire group is wound to form a new layer of wire cake. Through the cooperation of the groove and the T-shaped support bar, wire cakes of different thicknesses can be used, and the structure of the oil duct spacer is more reasonable.
[0019] Optionally, a plurality of arc-shaped ridges for guiding the winding of the wire group are provided on the oil duct spacer.
[0020] By adopting the above technical solution, the arc-shaped ridges can facilitate the winding of the wire cake, guide the wire cake, and improve the compactness during the winding of the wire cake.
[0021] Optionally, the circumferential side of the oil duct spacer is provided with rounded corners.
[0022] By adopting the above technical solution, the rounded corners on the circumferential side of the oil duct spacer can reduce the insulation of the wire from being scratched during the winding process of the wire group.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. By setting the number of wires in the wire group to a multiple of three, and then dividing multiple wires into a one-third wire part and a two-thirds wire part according to different numbers of wires. Compared with the traditional continuous coil where only integer turns of coil adjustment can be performed, the above coil structure can achieve turn adjustments such as 1 turn, 1 + 1 / 3 turns, 1 + 2 / 3 turns, and so on. This makes the adjustment range more refined and accurate, and the operation is also more rapid and convenient, improving the temperature rise of the transformer coil. Description of the Drawings
[0025] Figure 1 is a schematic structural diagram of the prior art.
[0026] Figure 2 is Figure 1 the sectional view of.
[0027] Figure 3 is a schematic structural diagram of the new continuous coil.
[0028] Figure 4 is Figure 3 the sectional view of.
[0029] Figure 5 is Figure 3 the exploded view of the oil duct spacer in.
[0030] Reference numerals: 1, winding mold; 11, cylinder; 12, paper tube; 13, T-shaped support bar; 2, wire cake; 21, wire group; 22, wire; 3, oil duct spacer; 31, groove; 32, arc-shaped ridge. Detailed implementation manners
[0031] The following further elaborates on this application in conjunction with the Figure 3-5 accompanying drawings.
[0032] The embodiment of this application discloses a novel continuous coil structure. Referring to Figure 3 and Figure 4 , a novel continuous coil structure includes a winding mold 1 and a plurality of wire bobbins 2. The winding mold 1 includes a cylinder 11, a paper tube 12, and eight T-shaped braces 13. The cylinder 11 is cylindrical, the cylinder 11 is vertically arranged, the paper tube 12 is sleeved on the outer side wall of the cylinder 11, the eight T-shaped braces 13 are evenly distributed circumferentially along the axis of the paper tube 12, the T-shaped braces 13 are vertically arranged, and the T-shaped braces 13 are fixedly arranged on the outer side wall of the paper tube 12.
[0033] Referring to Figure 3 and Figure 4 , a plurality of wire bobbins 2 are distributed in the vertical direction. The inner diameter of the wire bobbin 2 abuts against the T-shaped brace 13. The wire bobbin 2 is wound by a wire group 21. The wire group 21 includes three detachable wires 22. One winding of the wire group 21 around the winding mold 1 is one turn. The wire bobbin 2 can be composed of multiple turns of the wire group 21 and a single wire 22 that is detached and wound for one turn. The wire group 21 and the detachable wire 22 can form wire bobbins 2 with N turns, N + 1 / 3 turns, and N + 2 / 3 turns.
[0034] Referring to Figure 3 and Figure 5 , eight oil duct pads 3 are arranged between adjacent wire bobbins 2. The eight oil duct pads 3 correspond to the eight T-shaped braces 13 one by one. The oil duct pad 3 is made of insulating cardboard. The vertical projection of the oil duct pad 3 is an equilateral trapezoid. A groove 31 is opened on the short side of the oil duct pad 3. The groove 31 is T-shaped. The oil duct pad 3 is slidably connected to the T-shaped brace 13 through the groove 31. A plurality of arc-shaped protrusions 32 are opened on the upper end surface of the oil duct pad 3. The arc-shaped protrusions 32 are used to guide the wire group 21 to wind around the T-shaped brace 13, and the circumferential side of the arc-shaped protrusions 32 is provided with rounded corners.
[0035] The implementation principle of a novel continuous coil structure in the embodiment of this application is as follows: The wire group 21 is detachable, enabling the wire bobbin 2 to be composed of multiple turns of the wire group 21 and a single wire 22. The wire bobbin 2 can achieve turn adjustments such as 1 turn, 1 + 1 / 3 turns, 1 + 2 / 3 turns, etc., making the adjustment range more refined and accurate, and the operation is also more rapid and convenient, improving the temperature rise of the transformer coil.
[0036] During the winding process of the conductor coil 2, the staff first aligns the groove 31 on the oil duct spacer 3 with the T-shaped support bar 13 and slidably connects it to the T-shaped support bar 13. Then, the conductor group 21 is wound around the T-shaped support bar 13. The conductor group 21 is continuously wound N turns, and the individual conductor 22 is wound one more turn from the inside to the outside to form the first conductor coil 2. After that, the conductor group 21 is lifted to the position of the previous conductor coil 2 for winding, and the individual conductor 22 is wound one more turn from the outside to the inside to form the second conductor coil 2. The above operations are repeated to form the coil.
[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A novel continuous coil structure, characterized in that: It includes a winding die (1), on which a number of wire bobbins (2) are arranged along the axis direction of the winding die (1). The wire bobbins (2) are wound by wire groups (21). The wire groups (21) include several detachable wires (22). The number of the wires (22) is a multiple of three. The wire groups (21) can be wound into the wire bobbins (2) with N turns, N + 1 / 3 turns, and N + 2 / 3 turns by splitting the wires (22).
2. A novel continuous coil structure according to claim 1, characterized in that: The winding die (1) includes a cylinder (11), a paper tube (12), and several T-shaped braces (13). The paper tube (12) is sleeved on the cylinder (11). Several T-shaped braces (13) are evenly distributed circumferentially along the axis of the cylinder (11). The T-shaped braces (13) are arranged on the paper tube (12). The wire groups (21) are wound on the T-shaped braces (13).
3. A novel continuous coil structure according to claim 2, characterized in that: Several oil channel pads (3) are arranged between adjacent wire bobbins (2). The several oil channel pads (3) correspond to the several T-shaped braces (13) one by one. The oil channel pads (3) are arranged on the T-shaped braces (13).
4. A novel continuous coil structure according to claim 3, characterized in that: The oil channel pads (3) are made of insulating cardboard.
5. A novel continuous coil structure according to claim 3, characterized in that: The oil channel pads (3) are trapezoidal. The short sides of the oil channel pads (3) are arranged on the T-shaped braces (13).
6. A novel continuous coil structure according to claim 5, characterized in that: Grooves (31) are formed on the oil channel pads (3). The grooves (31) are T-shaped and are matched with the T-shaped braces (13).
7. A novel continuous coil structure according to claim 3, characterized in that: Several arc-shaped ridges (32) for guiding the winding of the wire groups (21) are arranged on the oil channel pads (3).
8. A novel continuous coil structure according to claim 3, characterized in that: The circumferences of the oil channel pads (3) are provided with rounded corners.