CN219040224U - High-voltage winding for transformer and dry-type transformer - Google Patents
High-voltage winding for transformer and dry-type transformer Download PDFInfo
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- CN219040224U CN219040224U CN202222917160.5U CN202222917160U CN219040224U CN 219040224 U CN219040224 U CN 219040224U CN 202222917160 U CN202222917160 U CN 202222917160U CN 219040224 U CN219040224 U CN 219040224U
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- insulating cylinder
- insulating
- peripheral wall
- voltage winding
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- 238000004804 winding Methods 0.000 title claims abstract description 63
- 230000002093 peripheral effect Effects 0.000 claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 38
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011889 copper foil Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000011888 foil Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Regulation Of General Use Transformers (AREA)
Abstract
The utility model provides a high-voltage winding for transformer, including high-voltage coil (4), first insulating cylinder (1) that cover in proper order is established from inside to outside, first metal shielding cylinder (2), second insulating cylinder (3), third insulating cylinder (5), second metal shielding cylinder (6) and fourth insulating cylinder (7), high-voltage coil (4) are located between second, third insulating cylinder, and the interval is relative between the periphery wall of second insulating cylinder (3) and the inner peripheral wall of high-voltage coil (4) and is formed with annular first air flue (41), the interval is relative between the periphery wall of high-voltage coil (4) and the inner peripheral wall of third insulating cylinder (5) and is formed with annular second air flue (42), first metal shielding cylinder (2), second metal shielding cylinder (6) link to each other with ground wire (8). The application also discloses a dry-type transformer with the high-voltage winding. The surface of the high-voltage winding can be touched, the distance between the high-voltage winding and the low-voltage winding can be reduced, and the manufacturing cost of the transformer is reduced.
Description
Technical Field
The utility model belongs to the technical field of transformers, and particularly relates to a high-voltage winding for a transformer and a dry-type transformer.
Background
A dry transformer is a transformer in which the iron core and windings are cooled by air without being immersed in insulating oil. The dry type transformer can be divided into single-phase transformer and three-phase dry type transformer according to the number of phases, taking three-phase dry type transformer as an example, it includes three groups of connected windings. The structure of each winding is shown in fig. 1, and the winding comprises a low-voltage winding 1', a high-voltage winding 2' sleeved on the periphery of the low-voltage winding 1', and an insulating layer 3' arranged between the low-voltage winding 1 'and the high-voltage winding 2'. The existing winding has the problem that the outer surface of the high-voltage winding is electrified and cannot be touched, and meanwhile, the distance between the low-voltage winding and the high-voltage winding is large.
Disclosure of Invention
The first technical problem to be solved by the present utility model is to provide a high-voltage winding for a transformer with a touchable surface, aiming at the current state of the art.
The second technical problem to be solved by the utility model is to provide a dry-type transformer with the high-voltage winding.
The technical scheme adopted by the utility model for solving the first technical problem is as follows: the utility model provides a high-voltage winding for transformer, includes high-voltage coil, still includes first insulating cylinder, first metal shielding cylinder, second insulating cylinder, third insulating cylinder, second metal shielding cylinder, fourth insulating cylinder that cover in proper order from interior to exterior establishes, high-voltage coil is located between second insulating cylinder and the third insulating cylinder, just the interval is relative between the outer perisporium of second insulating cylinder and the inner perisporium of high-voltage coil and is formed with annular first air flue, the interval is relative between the outer perisporium of high-voltage coil and the inner perisporium of third insulating cylinder and is formed with annular second air flue, first metal shielding cylinder, second metal shielding cylinder link to each other with the ground wire.
Preferably, the surface of the high-voltage coil is wrapped with an insulating outer layer. The high-voltage coil surface refers to the inner peripheral wall, the outer peripheral wall and the two end surfaces of the high-voltage coil.
Preferably, the distance between the outer peripheral wall of the second insulating cylinder and the inner peripheral wall of the high-voltage coil is smaller than the distance between the outer peripheral wall of the high-voltage coil and the inner peripheral wall of the third insulating cylinder.
Preferably, the thickness of the side wall of the first insulating cylinder is smaller than the thickness of the side wall of the second insulating cylinder; the thickness of the side wall of the third insulating cylinder is larger than that of the side wall of the fourth insulating cylinder.
Further, the first metal shielding cylinder is formed by winding copper foil, aluminum foil or tin foil with the thickness not more than 2 mm; the second metal shielding cylinder is formed by winding copper foil, aluminum foil or tin foil with the thickness not more than 2 mm.
Further, at least one of the first insulating cylinder, the second insulating cylinder, the third insulating cylinder and the fourth insulating cylinder is formed by winding insulating cloth with holes layer by layer from inside to outside and is a multi-layer cylinder body, and gaps in each hole of the grid cloth and between adjacent layers of cylinder bodies are filled with insulating materials. The insulating material can be epoxy resin or silica gel.
Preferably, the outer peripheral wall of the first insulating cylinder is attached to the inner peripheral wall of the first metal shielding cylinder, and the outer peripheral wall of the first metal shielding cylinder is attached to the inner peripheral wall of the second insulating cylinder; the outer peripheral wall of the third insulating cylinder is attached to the inner peripheral wall of the second metal shielding cylinder, and the outer peripheral wall of the second metal shielding cylinder is attached to the inner peripheral wall of the fourth insulating cylinder.
In each of the above embodiments, the high-voltage winding cross-sectional profile shape is preferably a circle, an ellipse, an oblong, or a rectangle. The oblong shape is waist-shaped or runway-shaped.
The utility model solves the second technical problem by adopting the technical proposal that: the dry-type transformer comprises an iron core and a low-voltage winding wound on the periphery of the iron core, and is characterized by further comprising the high-voltage winding, wherein the high-voltage winding is sleeved on the periphery of the low-voltage winding.
Compared with the prior art, the utility model has the advantages that: the high-voltage winding is designed to be provided with a first insulating cylinder, a first metal shielding cylinder, a second insulating cylinder, a high-voltage coil, a third insulating cylinder, a second metal shielding cylinder and a fourth insulating cylinder which are sleeved in sequence from inside to outside, a first air passage is formed between the second insulating cylinder and the high-voltage coil, a second air passage is formed between the high-voltage coil and the third insulating cylinder, and the first metal shielding cylinder and the second metal shielding cylinder are grounded, so that the whole high-voltage winding is good in insulating effect and can be touched on the surface; and the design of the first air passage and the second air passage can improve the integral heat dissipation and anti-cracking effects of the high-voltage winding.
And the structural design of the high-voltage winding in the application can reduce the distance between the high-voltage winding and the low-voltage winding, reduce the design cost of the transformer, reduce the installation distance of the dry-type transformer and improve the reliability of the safe operation of the transformer.
Drawings
FIG. 1 is a schematic diagram of a prior art winding;
FIG. 2 is a schematic diagram of a winding structure according to an embodiment of the present utility model;
fig. 3 is an enlarged view of a portion a in fig. 2;
fig. 4 is an enlarged view of a portion B in fig. 2.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 2 to 4, a preferred embodiment of a high voltage winding for a transformer and a dry type transformer according to the present utility model includes a core, a low voltage winding 200 sleeved on the outer circumference of the core, and a high voltage winding 100 sleeved on the outer circumference of the low voltage winding 200.
The high-voltage winding 100 is circular, elliptical, oblong or rectangular in cross-section outline, and comprises a first insulating cylinder 1, a first metal shielding cylinder 2, a second insulating cylinder 3, a high-voltage coil 4, a third insulating cylinder 5, a second metal shielding cylinder 6 and a fourth insulating cylinder 7 which are sequentially sleeved from inside to outside, wherein the outer peripheral wall of the first insulating cylinder 1 is attached to the inner peripheral wall of the first metal shielding cylinder 2, the outer peripheral wall of the first metal shielding cylinder 2 is attached to the inner peripheral wall of the second insulating cylinder 3, an annular first air passage 41 is formed by the outer peripheral wall of the second insulating cylinder 3 and the inner peripheral wall of the high-voltage coil 4 in a relative mode, an annular second air passage 42 is formed by the outer peripheral wall of the high-voltage coil 4 and the inner peripheral wall of the third insulating cylinder 5 in a relative mode, the outer peripheral wall of the third insulating cylinder 5 is attached to the inner peripheral wall of the second metal shielding cylinder 6, and the outer peripheral wall of the second metal shielding cylinder 6 is attached to the inner peripheral wall of the fourth insulating cylinder 7.
In this embodiment, the surface of the high-voltage coil 4 is covered with an insulating outer layer 4b. The first air passage 41 and the second air passage 42 are formed by facing the inner peripheral wall and the outer peripheral wall of the high-voltage coil 4 and the outer peripheral wall of the second insulating cylinder 3 and the inner peripheral wall of the third insulating cylinder 5, respectively, in a part of the insulating outer layer 4b. And the distance between the outer peripheral wall of the second insulating cylinder 3 and the inner peripheral wall of the high-voltage coil 4 is smaller than the distance between the outer peripheral wall of the high-voltage coil 4 and the inner peripheral wall of the third insulating cylinder 5. And the thickness of the side wall of the second insulating cylinder 3 is larger than that of the side wall of the first insulating cylinder 1 in this embodiment, and the thickness of the side wall of the third insulating cylinder 5 is larger than that of the side wall of the fourth insulating cylinder 7. The first insulating cylinder 1, the second insulating cylinder 3, the third insulating cylinder 5 and the fourth insulating cylinder 7 are formed by winding grid insulating cloth with holes layer by layer from inside to outside and are multi-layer cylinder bodies, insulating materials are filled in the holes of the insulating cloth and gaps between adjacent layers of cylinder bodies, and the insulating materials are made of epoxy resin or silica gel.
Simultaneously, the first metal shielding cylinder 2 and the second metal shielding cylinder 6 are connected with the ground wire 8, and the first metal shielding cylinder 2 is formed by winding copper foil, aluminum foil or tin foil with the thickness not more than 2 mm; the second metal shielding cylinder 6 is wound with copper foil, aluminum foil or tin foil with the thickness not more than 2 mm.
Claims (9)
1. The utility model provides a high-voltage winding for transformer, including high-voltage coil (4), its characterized in that still includes first insulating cylinder (1), first metal shielding cylinder (2), second insulating cylinder (3), third insulating cylinder (5), second metal shielding cylinder (6) and fourth insulating cylinder (7) that cover in proper order from interior to exterior establishes, high-voltage coil (4) are located between second insulating cylinder (3) and third insulating cylinder (5), just interval between the outer perisporium of second insulating cylinder (3) and the inner perisporium of high-voltage coil (4) is relative and is formed with annular first air flue (41), interval between the outer perisporium of high-voltage coil (4) and the inner perisporium of third insulating cylinder (5) is relative and is formed with annular second air flue (42), first metal shielding cylinder (2), second metal shielding cylinder (6) link to each other with ground wire (8).
2. The high voltage winding of claim 1, wherein: an insulating outer layer (4 b) is wrapped on the surface of the high-voltage coil (4).
3. The high voltage winding of claim 1, wherein: the interval distance between the outer peripheral wall of the second insulating cylinder (3) and the inner peripheral wall of the high-voltage coil (4) is smaller than the interval distance between the outer peripheral wall of the high-voltage coil (4) and the inner peripheral wall of the third insulating cylinder (5).
4. The high voltage winding of claim 1, wherein: the thickness of the side wall of the first insulating cylinder (1) is smaller than that of the side wall of the second insulating cylinder (3); the thickness of the side wall of the third insulating cylinder (5) is larger than that of the side wall of the fourth insulating cylinder (7).
5. The high voltage winding of claim 1, wherein: the first metal shielding cylinder (2) is formed by winding copper foil, aluminum foil or tin foil with the thickness not more than 2 mm; the second metal shielding cylinder (6) is formed by winding copper foil, aluminum foil or tin foil with the thickness not more than 2 mm.
6. The high voltage winding of claim 1, wherein: at least one of the first insulating cylinder (1), the second insulating cylinder (3), the third insulating cylinder (5) and the fourth insulating cylinder (7) is formed by winding insulating cloth with holes layer by layer from inside to outside and is a multi-layer cylinder body, and gaps in all holes of the insulating cloth and between adjacent layers of cylinder bodies are filled with insulating materials.
7. The high voltage winding of claim 1, wherein: the outer peripheral wall of the first insulating cylinder (1) is attached to the inner peripheral wall of the first metal shielding cylinder (2), and the outer peripheral wall of the first metal shielding cylinder (2) is attached to the inner peripheral wall of the second insulating cylinder (3); the outer peripheral wall of the third insulating cylinder (5) is attached to the inner peripheral wall of the second metal shielding cylinder (6), and the outer peripheral wall of the second metal shielding cylinder (6) is attached to the inner peripheral wall of the fourth insulating cylinder (7).
8. The high voltage winding according to any one of claims 1 to 7, wherein: the high-voltage winding cross-section profile shape is circular, elliptical, oblong or rectangular.
9. A dry-type transformer comprising an iron core, a low-voltage winding (200) wound around the outer periphery of the iron core, and a high-voltage winding according to any one of claims 1 to 8, wherein the high-voltage winding (100) is sleeved around the outer periphery of the low-voltage winding (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222917160.5U CN219040224U (en) | 2022-10-31 | 2022-10-31 | High-voltage winding for transformer and dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222917160.5U CN219040224U (en) | 2022-10-31 | 2022-10-31 | High-voltage winding for transformer and dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219040224U true CN219040224U (en) | 2023-05-16 |
Family
ID=86312590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222917160.5U Active CN219040224U (en) | 2022-10-31 | 2022-10-31 | High-voltage winding for transformer and dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219040224U (en) |
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2022
- 2022-10-31 CN CN202222917160.5U patent/CN219040224U/en active Active
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