Intertangled continuous type high-voltage coil tapping wire outlet structure of transformer
By adopting a tangled continuous high-voltage coil structure in the transformer, the problems of low tap fill rate and high tap height were solved, resulting in more stable and efficient transformer operation and reduced material consumption and production costs.
Patent Information
- Application Number
- CN202423100792.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-16
AI Technical Summary
The existing transformers have low tap fill rate and excessively high effective tap height, resulting in high material consumption and insufficient stability.
The high-voltage coil structure is entangled and continuous. By setting a combination of entangled and continuous sections of wire on the high-voltage coil, the height of the tap changer is reduced, the inter-turn capacitance is increased, the overvoltage distribution is improved, and the short-circuit withstand capability is enhanced.
The effective height of the tap changer area was reduced, which improved the stability and heat dissipation of the transformer, reduced material consumption, and lowered production costs.
Smart Images
Figure CN223842738U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of transformer manufacturing, and in particular to a transformer entangled continuous high-voltage coil tap-out structure. Background Technology
[0002] In transformers, to make the output voltage adjustable, a tap section is generally used in the coil. By changing the number of coil turns, the transformer voltage ratio is changed, thus adjusting the output voltage. To facilitate tapping, the tap section must have eight segments. The disadvantage of this structure is low tap fill rate and excessively high effective height of the tap area, resulting in high material consumption. Therefore, based on the above technical problems, this application proposes a low-cost, highly stable transformer entangled continuous high-voltage coil tapping structure. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a low-cost, high-stability transformer entanglement continuous high-voltage coil tap-out structure.
[0004] To achieve the above objectives, this utility model provides a transformer entangled continuous high-voltage coil tap-out structure, comprising an upper high-voltage coil and a lower high-voltage coil. Both the upper and lower high-voltage coils consist of an entangled section and two continuous sections, with the entangled section located between the two continuous sections. Wires are wound around the entangled section and the two continuous sections, sequentially wound along the sequence of continuous section-entangled section-another continuous section. The wires are tightly wound from top to bottom in the continuous sections, wound at equal intervals from bottom to top in the entangled section, and tightly wound from top to bottom in the other continuous section. After the wires are tightly wound from top to bottom in the other continuous section, they are wound from bottom to top along the entangled section at pre-reserved equal intervals. Each entangled section and continuous section has a tap-out head leading out.
[0005] Furthermore, when the upper half of the winding has 21 full turns and the tap spacing is 32 turns, the upper half of the winding has a total of 3 tap segments. Among them, the number of turns in the entangled segment in the upper half of the winding is 21, the number of turns in any continuous segment is 20, and the number of turns in another continuous segment is 21.
[0006] Furthermore, when the full number of turns in the lower half of the winding is 21 and the tap spacing is 32 turns, the total number of tap segments in the lower half of the winding is 3, wherein the number of turns in each entangled segment and continuous segment in the lower half of the winding is 21.
[0007] Furthermore, the tap outlet of the high-voltage coil entanglement section is externally connected to a lead wire for connecting to a tap changer.
[0008] The present invention adopts the above-described solution, and its beneficial effects are as follows:
[0009] By reducing the effective height of the tap changer, the transformer operates with a more balanced ampere-turn ratio, reducing the axial electrodynamic force caused by the ampere-turn imbalance during operation, thereby improving the stability of transformer operation.
[0010] By reducing the number of taps in a transformer from eight to six, the insulation padding within the taps is reduced, improving the heat dissipation of the coil and the fill rate of the coil taps, thus reducing the consumption cost of producing the transformer. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the transformer entangled continuous high-voltage coil tap-out structure in this example. Detailed Implementation
[0012] To facilitate understanding of this utility model, a more complete description of it is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0013] See appendix Figure 1 As shown in this embodiment, a transformer entangled continuous high-voltage coil tap-out structure includes an upper part of the high-voltage coil and a lower part of the high-voltage coil. Both the upper part and the lower part of the high-voltage coil are composed of an entangled section and two continuous sections. The entangled section is located between the two continuous sections. By setting the entangled section, the inter-turn capacitance is increased, the overvoltage distribution is improved, and the short-circuit withstand capability of the coil is enhanced.
[0014] It should be noted that, in this embodiment, see Appendix Figure 1 As shown, A to F represent 6 tap segments, and Y2 to Y7 represent 6 tap outlets. Among them, A to C are the tap segments of the lower half of the winding, and D to F are the tap segments of the upper half of the winding.
[0015] See appendix Figure 1 As shown, in this embodiment, a wire is wound around the tangled section and two continuous sections. The wire is wound sequentially along the continuous section-tangled section-another continuous section. The wire is tightly wound from top to bottom in the continuous section, wound at equal intervals from bottom to top in the tangled section, and tightly wound from top to bottom in the other continuous section. After the wire is tightly wound from top to bottom in the other continuous section, the wire is wound from bottom to top along the reserved equal intervals on the tangled section. A tap is led out from the tangled section and each continuous section.
[0016] In this embodiment, when the number of full turns in the upper half of the winding is 21 and the tap spacing is 32 turns, the total number of tap segments in the upper half of the winding is 3 (Y2, Y4 and Y6). Among them, the number of turns in the entangled segment in the upper half of the winding is 21, the number of turns in any continuous segment is 20, and the number of turns in another continuous segment is 21.
[0017] Furthermore, when the full number of turns in the lower half of the winding is 21 and the tap spacing is 32 turns, the total number of tap segments in the lower half of the winding is 3 (Y3, Y5 and Y7), among which the number of turns in each entangled segment and continuous segment in the lower half of the winding is 21.
[0018] In this embodiment, the tap outlet of the tangled section is externally connected to a lead wire for connecting to a tap changer, see Appendix. Figure 1 As shown, at the Y7 tap outlet on tap section B, there is an external lead for connecting the tap changer.
[0019] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or alterations made by those skilled in the art to the technical solution of this utility model without departing from its scope are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its scope should be covered within the protection scope of this utility model.
Claims
1. A transformer entangled continuous high-voltage coil tap-out structure, characterized in that: The device includes an upper half and a lower half of a high-voltage coil. Both the upper and lower half of the high-voltage coil consist of a tangled section and two continuous sections, with the tangled section located between the two continuous sections. Wires are wound around the tangled section and the two continuous sections in a sequential order of continuous section-tangled section-another continuous section. The wires are tightly wound from top to bottom in the continuous sections, wound at equal intervals from bottom to top in the tangled section, and tightly wound from top to bottom in the other continuous section. After the wires are tightly wound from top to bottom in the other continuous section, they are wound from bottom to top along the tangled section at pre-reserved equal intervals. Each tangled section and each continuous section has a tap outlet.
2. The transformer entangled continuous high-voltage coil tap-out structure according to claim 1, characterized in that: When the upper half of the high-voltage coil has 21 full turns and the tap spacing is 32 turns, the upper half of the high-voltage coil has a total of 3 tap segments. Among them, the number of turns in the tangled section in the upper half of the high-voltage coil is 21, the number of turns in any continuous segment is 20, and the number of turns in another continuous segment is 21.
3. The transformer entangled continuous high-voltage coil tap-out structure according to claim 1, characterized in that: When the full number of turns in the lower half of the high-voltage coil is 21, and the tap spacing is 32 turns, the total number of tap segments in the lower half of the high-voltage coil is 3. Among them, the number of turns in each tangled segment and continuous segment in the lower half of the high-voltage coil is 21.
4. The transformer entangled continuous high-voltage coil tap-out structure according to claim 1, characterized in that: The tap outlet of the tangled section is connected to a lead wire for connecting to a tap changer.