CN209859785U - Air dry-type transformer high-voltage coil - Google Patents
Air dry-type transformer high-voltage coil Download PDFInfo
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- CN209859785U CN209859785U CN201920619675.2U CN201920619675U CN209859785U CN 209859785 U CN209859785 U CN 209859785U CN 201920619675 U CN201920619675 U CN 201920619675U CN 209859785 U CN209859785 U CN 209859785U
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Abstract
The utility model discloses an air dry-type transformer high-voltage coil, which comprises an insulating cylinder, four long comb-shaped stays and six short comb-shaped stays, wherein the short comb-shaped stays are arranged at the middle point and two end points of the outer wall of each section of circular arc section of the insulating cylinder, and one long comb-shaped stay is arranged between any two adjacent short comb-shaped stays on the outer wall of the circular arc section of any section of insulating cylinder; the middle points of the long comb-shaped supporting strips and the short comb-shaped supporting strips arranged on the insulating cylinder are aligned; the length of the long comb-shaped stay is consistent with the height of the insulating cylinder, and the length of the long comb-shaped stay is greater than that of the short comb-shaped stay; the long comb-shaped stay and the short comb-shaped stay respectively comprise comb backs, toothless ends formed at two end parts of the outer sides of the comb backs and two comb tooth sections which are formed at two ends of the outer sides of the comb backs and are symmetrically arranged, wherein each comb tooth section consists of a plurality of comb teeth, and a comb tooth groove for winding and matching a coil of a high-voltage coil is formed between every two adjacent comb teeth.
Description
Technical Field
The utility model belongs to the technical field of the technique of transformer structure and specifically relates to indicate an air dry-type transformer high tension coil.
Background
The air dry type transformer is a transformer using air as main insulation, and the air dry type transformer has the advantages of obvious heat dissipation effect, strong overload capacity, good environmental protection, short manufacturing period and the like and is popular with users because the coil surface is not encapsulated, the insulation resistance level is high (H level), and the combustibles are low. The conventional high voltage coil is formed by separating wire cakes by ceramic blocks, and the ceramic blocks are strung on dovetail supporting bars.
The structure has the defects that the cushion block and the supporting strips are of separate structures, the supporting strips are single and thin, and when the transformer is subjected to an external sudden short circuit, the coils are easy to destabilize due to insufficient mechanical strength of the supporting strips, so that the transformer burnout accident is easy to cause.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a rational in infrastructure air dry-type transformer high-voltage coil.
In order to achieve the above object, the present invention provides a high voltage coil of an air dry-type transformer, which comprises an insulating cylinder, wherein the insulating cylinder is of a long circular structure, and further comprises four long comb-shaped stays and six short comb-shaped stays, the short comb-shaped stays are disposed at the middle point and the two end points of the outer wall of each section of circular arc section of the insulating cylinder, and a long comb-shaped stay is disposed between any two adjacent short comb-shaped stays on the outer wall of the circular arc section of any section of insulating cylinder; the middle points of the long comb-shaped supporting strips and the short comb-shaped supporting strips arranged on the insulating cylinder are aligned; the length of the long comb-shaped stay is consistent with the height of the insulating cylinder, and the length of the long comb-shaped stay is greater than that of the short comb-shaped stay; the long comb-shaped stay and the short comb-shaped stay respectively comprise comb backs, toothless ends formed at two end parts of the outer sides of the comb backs and two comb tooth sections which are formed at two ends of the outer sides of the comb backs and are symmetrically arranged, wherein each comb tooth section consists of a plurality of comb teeth, and a comb tooth groove for winding and matching a coil of a high-voltage coil is formed between every two adjacent comb teeth.
The insulation cylinder is characterized by further comprising a pressure regulating support seat and a pressure regulating panel fixed on the pressure regulating support seat, wherein the pressure regulating support seat is clamped and fixed in a comb back area between two comb tooth sections of the short comb-shaped stay on the short comb-shaped stay at the midpoint position of the outer wall of any section of the circular arc section of the insulation cylinder; six bolt hole sites for fixing the wiring bolts are formed on the pressure regulating panel.
Furthermore, the height of the comb tooth groove is 0.4mm larger than the width of the lead of the high-voltage coil.
Furthermore, on each long comb-shaped stay or each short comb-shaped stay, the height of the four comb tooth grooves on one side of the comb tooth section adjacent to the tooth-free end is 0.5mm higher than that of other comb tooth grooves.
Further, the length of the long comb-shaped stay is 40mm greater than that of the short comb-shaped stay.
Furthermore, the depth of the comb tooth groove is 5-7mm larger than the width of the line cake in the width direction.
Furthermore, any one long comb-shaped stay and two adjacent comb-shaped stays are arranged at an included angle of 45 degrees.
The utility model adopts the above technical scheme, its beneficial effect lies in: the specific structural arrangement of the four long comb-shaped supporting strips and the six short comb-shaped supporting strips is utilized, so that the structural hierarchy of the high-voltage coil of the transformer is clear, the integral use stability is ensured, the heat dissipation space distribution is reasonable, and the supporting strength is improved by utilizing the long comb-shaped supporting strips and the short comb-shaped supporting strips of the integral structure, so that the safety performance is ensured.
Drawings
Fig. 1 is a schematic diagram of the high-voltage coil of the present invention.
Fig. 2 is a top view of the high-voltage coil of the present invention.
Fig. 3 is a schematic view of the long comb-shaped stay of the present invention.
Fig. 4 is a schematic view of the short comb stay of the present invention.
Fig. 5 is a schematic view of the pressure regulating support seat of the present invention.
Fig. 6 is a schematic view of the pressure adjusting panel of the present invention.
The device comprises an insulating cylinder 1, a long comb-shaped stay 2, a short comb-shaped stay 3, a wire cake 4, a pressure regulating support seat 5, a pressure regulating panel 6, a comb back 71, a toothless end 72, a comb tooth section 73 and a comb tooth groove 74.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Referring to fig. 1 to 6, in the present embodiment, an air dry-type transformer high-voltage coil includes an insulating cylinder 1, four long comb-shaped stays 2 and six short comb-shaped stays 3, where the insulating cylinder 1 of the present embodiment is an oblong ring-shaped structure and is made of glass fiber reinforced plastic, that is, the insulating cylinder 1 is composed of an arc section, a straight section, an arc section and a straight section which are sequentially connected end to end.
In this embodiment, the middle point and two end points of the outer wall of each circular arc section of the insulating cylinder 1 are respectively provided with a short comb-shaped stay 3, that is, as shown in fig. 2, six short comb-shaped stays 3 are respectively arranged at positions a, c, e, f, h, and j, and on the outer wall of the circular arc section of any one section of the insulating cylinder 1, a long comb-shaped stay 2 is arranged between any two adjacent short comb-shaped stays 3, that is, as shown in fig. 2, four long comb-shaped stays 2 are respectively arranged at positions b, d, g, and i, and secondly, any one long comb-shaped stay 2 and two adjacent comb-shaped stays are arranged at an included angle of 45 °. For easy understanding, the insulating cylinder 1 is firstly placed on a preset mold, then four long comb-shaped supporting strips 2 and six short comb-shaped supporting strips 3 are respectively placed at corresponding positions and are tightly bound by binding bands, and finally, the high-voltage coil is wound.
In this embodiment, the middle points of the long comb-like stays 2 and the short comb-like stays 3 disposed on the insulating cylinder 1 are aligned, the length of the long comb-like stays 2 is the same as the height of the insulating cylinder 1, and the length of the long comb-like stays 2 is greater than the length of the short comb-like stays 3, so that the height difference between the upper end and the lower end of the long comb-like stay 2 disposed on the insulating cylinder 1 and the upper end and the lower end of the short comb-like stay 3 is 20mm because the length of the long comb-like stay 2 is greater than the length of the short comb-like stay 3 by 40 mm.
In this embodiment, each of the long comb-shaped stay 2 and the short comb-shaped stay 3 includes a comb back 71, toothless ends 72 formed at two ends of the outside of the comb back 71, and two comb tooth sections 73 formed at two ends of the outside of the comb back 71 and symmetrically arranged, wherein each comb tooth section 73 is composed of a plurality of comb teeth and a comb tooth groove 74 for winding and matching the wire cake 4 of the high-voltage coil is formed between two adjacent comb teeth, secondly, the groove depth of the comb tooth groove 74 is 5-7mm greater than the width of the wire cake 4, and the groove height of the comb tooth groove 74 is 0.4mm greater than the wire width of the high-voltage coil, so that the wire cake 4 can smoothly enter the comb tooth groove 74. In addition, on each long comb-like stay 2 or short comb-like stay 3, the four comb tooth grooves 74 on the side of the comb tooth section 73 adjacent to the toothless end 72 have a groove height 0.5mm higher than that of the other comb tooth grooves 74, and the purpose is to insulate the cakes 4 wound in the comb tooth grooves 74 by multiple pairs, thereby improving the lightning protection capability.
In the present embodiment, on any one of the long comb stays 2 or the short comb stays 3, the area of the comb back 71 between the two comb-tooth segments 73 is a toothless area (located at the middle position of the comb back 71). The pressure regulating device further comprises a pressure regulating support seat 5 and a pressure regulating panel 6 fixed on the pressure regulating support seat, wherein on the short comb-shaped stay 3 at the midpoint position of the outer wall of any section of the circular arc section of the insulating cylinder 1 (namely, as shown in the attached drawing 2, the short comb-shaped stay 3 at the position c), the pressure regulating support seat 5 is clamped and fixed in a comb back 71 area between two comb-tooth sections 73 of the short comb-shaped stay 3, namely, a clamping groove is formed in the back of the pressure regulating support seat 5, and the clamping groove is clamped and matched with a toothless area of the short comb-shaped stay 3, so that the pressure regulating support seat 5 is fixedly installed on the short comb-shaped stay 3; the pressure regulating panel 6 is fixedly installed on the front surface of the pressure regulating supporting seat 5 through screws, six bolt hole positions for fixing the wiring bolts are formed on the pressure regulating panel 6, namely, the tapping lead on the wire cake 4 is fixed on the pressure regulating surface through the wiring bolts, and then the unit decomposing sheet and the dust-proof box can be installed.
The above-described embodiments are merely preferred embodiments of the present invention, which are not intended to limit the present invention in any way. Those skilled in the art can make many changes, modifications, and equivalents of the embodiments of the invention without departing from the scope of the invention. Therefore, the content of the technical scheme of the utility model, according to the equivalent change made by the idea of the utility model, should be covered in the protection scope of the utility model.
Claims (7)
1. The high-voltage coil of the air dry type transformer comprises an insulating cylinder (1), wherein the insulating cylinder (1) is of an oblong annular structure, and is characterized in that: the insulation cylinder is characterized by further comprising four long comb-shaped supporting strips (2) and six short comb-shaped supporting strips (3), wherein the short comb-shaped supporting strips (3) are arranged at the middle points and two end points of the outer wall of each section of the arc section of the insulation cylinder (1), and one long comb-shaped supporting strip (2) is arranged between any two adjacent short comb-shaped supporting strips (3) on the outer wall of the arc section of any section of the insulation cylinder (1); the middle points of the long comb-shaped supporting strips (2) and the short comb-shaped supporting strips (3) arranged on the insulating cylinder (1) are aligned; the length of the long comb-shaped stay (2) is consistent with the height of the insulating cylinder (1), and the length of the long comb-shaped stay (2) is greater than that of the short comb-shaped stay (3); the long comb-shaped stay (2) and the short comb-shaped stay (3) respectively comprise a comb back (71), toothless ends (72) formed at two ends of the outer side of the comb back (71) and two comb tooth sections (73) formed at two ends of the outer side of the comb back (71) and symmetrically arranged, wherein each comb tooth section (73) is formed by a plurality of comb teeth, and a comb tooth groove (74) for winding and matching a coil (4) of a high-voltage coil is formed between two adjacent comb teeth.
2. An air dry type transformer high voltage coil according to claim 1, characterized in that: the insulation tube is characterized by further comprising a pressure regulating support seat (5) and a pressure regulating panel (6) fixed on the pressure regulating support seat, wherein the pressure regulating support seat (5) is clamped and fixed in a comb back (71) area between two comb tooth sections (73) of the short comb-shaped stay (3) on the short comb-shaped stay (3) at the midpoint position of the outer wall of any section of circular arc section of the insulation tube (1); six bolt hole sites for fixing the wiring bolts are formed on the pressure regulating panel (6).
3. An air dry type transformer high voltage coil according to claim 1, characterized in that: the height of the comb tooth groove (74) is 0.4mm larger than the width of the lead of the high-voltage coil.
4. A high voltage coil for an air dry type transformer according to claim 3, wherein: on each long comb-shaped stay (2) or each short comb-shaped stay (3), the height of four comb tooth grooves (74) on one side of a comb tooth section (73) adjacent to the toothless end (72) is 0.5mm higher than that of other comb tooth grooves (74).
5. An air dry type transformer high voltage coil according to claim 1, characterized in that: the length of the long comb-shaped stay (2) is 40mm greater than that of the short comb-shaped stay (3).
6. An air dry type transformer high voltage coil according to claim 1, characterized in that: the depth of the comb tooth grooves (74) is 5-7mm larger than the width of the line cake (4) in the width direction.
7. An air dry type transformer high voltage coil according to claim 1, characterized in that: any one long comb-shaped stay (2) and two adjacent comb-shaped stays are arranged at an included angle of 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920619675.2U CN209859785U (en) | 2019-04-30 | 2019-04-30 | Air dry-type transformer high-voltage coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920619675.2U CN209859785U (en) | 2019-04-30 | 2019-04-30 | Air dry-type transformer high-voltage coil |
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| Publication Number | Publication Date |
|---|---|
| CN209859785U true CN209859785U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920619675.2U Active CN209859785U (en) | 2019-04-30 | 2019-04-30 | Air dry-type transformer high-voltage coil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284722A (en) * | 2021-05-19 | 2021-08-20 | 云南电网有限责任公司电力科学研究院 | Supporting structure for improving radial short-circuit resistance of transformer |
| CN114300238A (en) * | 2021-12-29 | 2022-04-08 | 江苏神马电力股份有限公司 | Winding body of high-voltage winding and high-voltage winding |
-
2019
- 2019-04-30 CN CN201920619675.2U patent/CN209859785U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284722A (en) * | 2021-05-19 | 2021-08-20 | 云南电网有限责任公司电力科学研究院 | Supporting structure for improving radial short-circuit resistance of transformer |
| CN113284722B (en) * | 2021-05-19 | 2024-04-19 | 云南电网有限责任公司电力科学研究院 | Supporting structure for improving radial short-circuit resistance of transformer |
| CN114300238A (en) * | 2021-12-29 | 2022-04-08 | 江苏神马电力股份有限公司 | Winding body of high-voltage winding and high-voltage winding |
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