Low-voltage winding structure with two wire gauges for transformer of high-capacity power plant
By adopting a low-voltage winding structure with two wire gauges, opposite winding directions, and a multi-helix design, the low-voltage winding of a large-capacity substation transformer has been optimized, solving the problems of large size and high cost, and achieving a compact design and improved economic efficiency of the transformer.
Patent Information
- Application Number
- CN202423049431.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-11
AI Technical Summary
The large volume of the low-voltage windings of transformers in large-capacity substations results in a large overall transformer size, high transportation altitude, and high material costs, which cannot meet the limitations of transportation and on-site conditions.
The low-voltage winding structure employs two different wire gauges. The first and second coils are wound in opposite directions to form a multi-helix structure. Combined with self-adhesive transposed wires and insulating mesh tape, the winding layout is optimized, reducing material usage and overall size.
It significantly reduces the volume of low-voltage windings, lowers material costs and transportation height, and improves transportation convenience and efficiency, reflecting the rational use of resources and technological progress, and providing support for the optimization and upgrading of the power system.
Smart Images
Figure CN223692975U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to oil -immersed transformer technical field more specifically, the utility model relates to a kind of low voltage winding structure of two wire gauge for large capacity power plant change. BACKGROUND
[0002] Large capacity transformer substation, usually refers to the transformer capacity larger substation, they can undertake large-scale power conversion and distribution tasks, meet the needs of a large number of power supply in city, industrial area etc.
[0003] Large capacity transformer substation, i. e. large capacity substation, is an important part of power system, for power conversion, distribution, control and protection. They convert high voltage power into low voltage power through transformer, supply for industrial, commercial and civilian users.
[0004] With the rapid development of China's economy, large capacity power plant transformer demand is increasing, but its size is restricted by transportation and site conditions, cannot expand infinitely with capacity, so need to reduce the size of transformer.
[0005] At present, large capacity power plant transformer low voltage winding often adopts the same specification U type spiral structure, is divided into inner and outer two layers, outgoing line is all arranged at top, is connected through bottom transition transposition, this design leads to low voltage winding bulky, in turn makes transformer overall volume, transportation height, material cost is high, thus needs to be reformed and optimized. UTILITY MODEL CONTENT
[0006] In order to overcome the deficiencies of prior art, the utility model provides a kind of low voltage winding structure of two wire gauge for large capacity power plant change, with the advantage of small volume.
[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of low voltage winding structure of two wire gauge for large capacity power plant change, including iron core main column, first coil, second coil;
[0008] The second coil is wound on the outer surface of the first coil, the iron core main column is located on one side of the first coil, the first coil is provided with a first group of conductors at both ends, the second coil is provided with a second group of conductors at both ends, the first coil is provided with a first coil lower end outgoing line in the inside, the first coil lower end outgoing line is provided with a first coil lower end tinned copper terminal at one end, the second coil is provided with a second coil lower end outgoing line in the inside, the second coil lower end outgoing line is provided with a second coil lower end tinned copper terminal at one end, the first coil lower end tinned copper terminal is connected with the second coil lower end tinned copper terminal by copper bar two, the first coil and the second coil are in series.
[0009] As a preferred technical scheme of the utility model, the winding direction of the first coil is from right to left, the winding direction of the second coil is from left to right, the first coil is formed by winding a first group of conductive wires, and the second coil is formed by winding a second group of conductive wires.
[0010] As a preferred technical scheme of the utility model, the structure formed by the first coil and the second coil is a multiple spiral structure, N columns of 2-section structures, and N is an integer multiple of 4.
[0011] As a preferred technical scheme of the utility model, the first group of conductive wires is made of self-adhesive transposed wire single conductive wires, the material of the second group of conductive wires is made of self-adhesive transposed wire single conductive wires, the outer surface of the self-adhesive transposed wire single conductive wire is movably sleeved with self-adhesive transposed wire outer covering insulation mesh belts, the thickness of the self-adhesive transposed wire outer covering insulation mesh belt is 0.56 mm, and the outer surface of the self-adhesive transposed wire outer covering insulation mesh belt is sleeved with a self-adhesive transposed wire single conductive wire paint film.
[0012] As a preferred technical scheme of the utility model, the diameter value of the first coil is different from the diameter value of the second coil, and the diameter value of the first coil and the diameter value of the second coil range between 10 mm and 100 mm.
[0013] As a preferred technical scheme of the utility model, the number of self-adhesive transposed wire single conductive wires in the first group of conductive wires is different from the number of self-adhesive transposed wire single conductive wires in the second group of conductive wires, the number of the two self-adhesive transposed wire single conductive wires ranges between 11 and 63, and the number is a prime number, the size of the self-adhesive transposed wire single conductive wire in the first group of conductive wires ranges between 1 mm and 10 mm, the size of the self-adhesive transposed wire single conductive wire in the second group of conductive wires ranges between 1 mm and 10 mm, and the size of the self-adhesive transposed wire single conductive wire in the first group of conductive wires is different from the size of the self-adhesive transposed wire single conductive wire in the second group of conductive wires.
[0014] As a preferred technical scheme of the utility model, a copper bar one is arranged between the first coil and the second coil, the outer surface of the first group of conductive wires is sleeved with a pressing ring, the outer surface of the wire outlet at the lower end of the first coil is sleeved with a lower clamp piece support plate, the surface of a copper bar two is provided with an oil channel plate, the oil channel plate is connected with the copper bar two through bolts, the lower end of the lower clamp piece support plate is provided with an insulation support piece, the upper portion of the insulation support piece is provided with an iron core pull plate, and the bottom of the insulation support piece is provided with a lower clamp piece web.
[0015] Compared with the prior art, the utility model has the beneficial effects as follows:
[0016] The utility model discloses a low -voltage winding structure that two different wire gauge are adopted, the volume of low -voltage winding whole is reduced significantly, this innovative design not only greatly reduces the material consumption, effectively reduces the production cost, and make the overall size of transformer more compact, in addition, the volume reduction also directly reduces the transportation height of transformer, improves the convenience and efficiency of transportation, this design not only embodies the rational use of resources, also shows the technical progress and innovative thinking in the field of power equipment manufacturing, provides strong support for the optimization and upgrading of power system. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is structural schematic diagram of the utility model;
[0018] Figure 2 It is winding structure schematic diagram of the utility model;
[0019] Figure 3 It is single wire section view of self -adhesion transposition conductor wire of the utility model;
[0020] Figure 4 It is copper bar connection front structure schematic diagram of first coil lower end outgoing line and second coil lower end outgoing line of the utility model;
[0021] Figure 5 It is copper bar connection side structure schematic diagram of first coil lower end outgoing line and second coil lower end outgoing line of the utility model.
[0022] In the drawing: 1, iron core main column;2, first coil;3, second coil;4, copper bar one;5, first group of conductor;6, second group of conductor;7, single wire of self -adhesion transposition conductor wire;8, single wire paint film of self -adhesion transposition conductor wire;9, the insulating mesh belt of self -adhesion transposition conductor wire outer cladding;10, lower pressing ring;11, first coil lower end outgoing line;12, first coil lower end tinned copper terminal;13, lower clamp piece support plate;14, copper bar two;15, oil channel board;16, second coil lower end outgoing line;17, second coil lower end tinned copper terminal;18, insulating support piece;19, iron core pull plate;20, lower clamp piece web. DETAILED DESCRIPTION
[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.
[0024] As Figures 1 to 5As shown, the utility model provides 1. A large capacity power plant changes with two kinds of wire gauge low voltage winding structure, including iron core main column 1, first coil 2, second coil 3;
[0025] Second coil 3 is wound on the outer surface of first coil 2, iron core main column 1 is located at one side of first coil 2, both ends of first coil 2 are equipped with first group of wires 5, both ends of second coil 3 are equipped with second group of wires 6, the inside of first coil 2 is equipped with first coil lower end outgoing line 11, one end of first coil lower end outgoing line 11 is equipped with first coil lower end tinned copper terminal 12, the inside of second coil 3 is equipped with second coil lower end outgoing line 16, one end of second coil lower end outgoing line 16 is equipped with second coil lower end tinned copper terminal 17, first coil lower end tinned copper terminal 12 is connected with second coil lower end tinned copper terminal 17 through copper bar two 14, and first coil 2 and second coil 3 are in series.
[0026] By adopting two kinds of different wire gauge low voltage winding structure, the volume of the low voltage winding is significantly reduced, the innovative design not only greatly reduces the amount of material, effectively reduces the production cost, and makes the overall size of the transformer more compact, in addition, the reduction of volume directly reduces the transportation height of the transformer, improves the convenience and efficiency of transportation, this design not only embodies the rational use of resources, also shows the technical progress and innovative thinking in the field of power equipment manufacturing, provides strong support for the optimization and upgrading of power system.
[0027] Wherein, the winding direction of first coil 2 is from right to left, the winding direction of second coil 3 is from left to right, first coil 2 is wound by first group of wires 5, and second coil 3 is wound by second group of wires 6.
[0028] By winding in opposite directions and using different wire gauges, the volume of the low voltage winding is effectively reduced, the material cost is reduced, and the transportation height of the transformer is reduced, thereby improving the overall performance and economic benefits.
[0029] Wherein, the structure formed by first coil 2 and second coil 3 is a multiple spiral structure, N columns of 2 segments structure, and N is an integer multiple of 4.
[0030] By adopting N column 2 segment design, this structure not only optimizes the layout of the low voltage winding, but also further reduces the volume and cost, while maintaining good electrical performance, thereby providing strong support for efficient operation and cost saving of the transformer.
[0031] The first group of conductors 5 is made of self-adhesive transposed conductor single conductors 7, and the material of the second group of conductors 6 is made of self-adhesive transposed conductor single conductors 7, the outer surface of the self-adhesive transposed conductor single conductors 7 is sleeved with a self-adhesive transposed conductor outer covering insulation mesh belt 9, the thickness of the self-adhesive transposed conductor outer covering insulation mesh belt 9 is 0.56mm, and the outer surface of the self-adhesive transposed conductor outer covering insulation mesh belt 9 is sleeved with a self-adhesive transposed conductor single conductor paint film 8.
[0032] By enhancing the insulation performance and self-adhesion of the conductors, the stability and durability of the winding are improved, while maintaining good electrical conductivity, providing protection for the efficient and safe operation of the transformer.
[0033] The diameter of the first coil 2 is different from the diameter of the second coil 3, and the diameter of the first coil 2 and the diameter of the second coil 3 are within the range of 10mm to 100mm.
[0034] The winding structure is optimized, which adapts to different current and voltage requirements, improves the flexibility and application range of the transformer, and maintains good electrical performance and winding process.
[0035] The number of self-adhesive transposed conductor single conductors 7 in the first group of conductors 5 is different from the number of self-adhesive transposed conductor single conductors 7 in the second group of conductors 6, the number of two self-adhesive transposed conductor single conductors 7 is within the range of 11 to 63, and the number is a prime number, the size of the self-adhesive transposed conductor single conductors 7 in the first group of conductors 5 is within the range of 1mm to 10mm, the size of the self-adhesive transposed conductor single conductors 7 in the second group of conductors 6 is within the range of 1mm to 10mm, and the size of the self-adhesive transposed conductor single conductors 7 in the first group of conductors 5 is different from the size of the self-adhesive transposed conductor single conductors 7 in the second group of conductors 6.
[0036] Optimizing the current distribution, improving the winding efficiency, and enhancing the adaptability and performance of the transformer.
[0037] The copper bar one 4 is arranged between the first coil 2 and the second coil 3, the outer surface of the first group of conductors 5 is sleeved with a pressing ring 10, the outer surface of the first coil lower end outgoing line 11 is sleeved with a lower clamp piece support plate 13, the surface of the copper bar two 14 is provided with an oil channel plate 15, the oil channel plate 15 is connected with the copper bar two 14 through bolts, the lower end of the lower clamp piece support plate 13 is provided with an insulation support piece 18, the upper side of the insulation support piece 18 is provided with a core pull plate 19, and the bottom of the insulation support piece 18 is provided with a lower clamp piece web plate 20.
[0038] The structure stability and insulation performance can be improved to ensure the safe and efficient operation of the transformer.
[0039] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0040] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.
Claims
1. A large capacity power plant transformer with two gauge low voltage winding structure comprising a core limb (1), a first coil (2), a second coil (3), characterized in that: The second coil (3) is wound on the outer surface of the first coil (2), the core main column (1) is located on one side of the first coil (2), both ends of the first coil (2) are provided with a first group of wires (5), both ends of the second coil (3) are provided with a second group of wires (6), the inside of the first coil (2) is provided with a first coil lower end outgoing line (11), one end of the first coil lower end outgoing line (11) is provided with a first coil lower end tinned copper terminal (12), the inside of the second coil (3) is provided with a second coil lower end outgoing line (16), one end of the second coil lower end outgoing line (16) is provided with a second coil lower end tinned copper terminal (17), the first coil lower end tinned copper terminal (12) is connected with the second coil lower end tinned copper terminal (17) through the copper bar two (14), and the first coil (2) and the second coil (3) are in series.
2. A large capacity power plant transformer with two gauge low voltage winding construction as claimed in claim 1, wherein: The winding direction of the first coil (2) is from right to left, the winding direction of the second coil (3) is from left to right, the first coil (2) is formed by winding the first group of wires (5), and the second coil (3) is formed by winding the second group of wires (6).
3. A large capacity power plant transformer with two gauge low voltage winding construction as claimed in claim 1, wherein: The structure formed by the first coil (2) and the second coil (3) is a multiple spiral structure, N columns of 2 segments, and N is an integer multiple of 4.
4. A large capacity power plant transformer with two gauge low voltage winding construction as claimed in claim 1, wherein: The first group of wires (5) is made of self-adhesive transposition wire single wire (7), the material of the second group of wires (6) is made of self-adhesive transposition wire single wire (7), the outer surface of the self-adhesive transposition wire single wire (7) is movably sleeved with a self-adhesive transposition wire outer covering insulation mesh belt (9), the thickness of the self-adhesive transposition wire outer covering insulation mesh belt (9) is 0.56mm, and the outer surface of the self-adhesive transposition wire outer covering insulation mesh belt (9) is sleeved with a self-adhesive transposition wire single wire paint film (8).
5. A large capacity power plant transformer with two gauge low voltage winding construction as claimed in claim 1, wherein: The diameter value of the first coil (2) is different from the diameter value of the second coil (3), and the diameter value of the first coil (2) and the diameter value of the second coil (3) are in the range of 10mm to 100mm.
6. A large capacity power plant transformer with two gauge low voltage winding construction as claimed in claim 1, wherein: The number of self-adhesive transposition wire single wires (7) in the first group of wires (5) is different from the number of self-adhesive transposition wire single wires (7) in the second group of wires (6), the number of the two self-adhesive transposition wire single wires (7) is between 11 and 63, and the number is a base number, the size of the self-adhesive transposition wire single wire (7) in the first group of wires (5) is in the range of 1mm to 10mm, the size of the self-adhesive transposition wire single wire (7) in the second group of wires (6) is in the range of 1mm to 10mm, and the size of the self-adhesive transposition wire single wire (7) in the first group of wires (5) is different from the size of the self-adhesive transposition wire single wire (7) in the second group of wires (6).
7. A large capacity power plant transformer with two gauge low voltage winding construction as claimed in claim 1, wherein: The first coil (2) and the second coil (3) are provided with copper bar one (4), the outer surface of the first group of wires (5) is sleeved with the lower pressing ring (10), the outer surface of the first coil lower end outgoing line (11) is sleeved with the lower clamp piece support plate (13), the surface of the copper bar two (14) is provided with the oil channel plate (15), the oil channel plate (15) is connected with the copper bar two (14) through bolts, the lower end of the lower clamp piece support plate (13) is provided with the insulating support piece (18), the upper side of the insulating support piece (18) is provided with the iron core pull plate (19), the bottom of the insulating support piece (18) is provided with the lower clamp piece web (20).