CN208271709U - A kind of oil-immersed transformer coil assembly preventing deformation - Google Patents
A kind of oil-immersed transformer coil assembly preventing deformation Download PDFInfo
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- CN208271709U CN208271709U CN201820950464.2U CN201820950464U CN208271709U CN 208271709 U CN208271709 U CN 208271709U CN 201820950464 U CN201820950464 U CN 201820950464U CN 208271709 U CN208271709 U CN 208271709U
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Abstract
The utility model discloses a kind of oil-immersed transformer coil assemblies for preventing deformation, and including iron core and the coil being wound on the outside of iron core, the cross section of coil is in oblong structure；Respectively equipped with sizing cushion block on the end face of coil left and right side；The sizing cushion block is processed into rectangular configuration using insulation board, respectively offers globoidal structure in the sizing positive left and right side of cushion block, respectively offers chamfering structure in the left and right side at the sizing cushion block back side, and be also provided with radiating groove at its back side；Two sizing cushion blocks are respectively attached on the end face of coil left and right side with its back side, and constitute oval end face structure with coil；The utility model is of simple structure and low cost, oval end face structure is constituted by matching the oblong coil of oil-immersed transformer with two sizing cushion blocks, effectively preventing coil, deformation occurs during power transformation operation, its mechanical structure performance is stablized, and anti-short circuit capability is significantly enhanced.
Description
Technical field
The utility model relates to oil-immersed transformer technical field, especially a kind of oil-immersed transformer line for preventing deformation
Enclose assembly.
Background technique
Oil-immersed transformer coil assembly includes iron core and the coil that is wound on the outside of iron core.Transformer is actually being become
When electric operation, when short trouble occurs in load-side, it can be increased moment by the electric current of transformer coil, correspondingly coil turn-to-turn
Lorentz force will increase, this will lead to the coil of transformer, and deformation occurs, and impedance increases, and output power reduces, and with
The deterioration of coil deformation, the insulated paint in coil windings can be damaged, and then the phenomenon that turn-to-turn short circuit occur, even result in
Transformer is burnt, to effectively prevent transformer coil, deformation occurs, is just seemed especially to the anti-short circuit capability for improving coil
It is important.
Currently, usually there are three types of winding structures for the coil of oil-immersed transformer, can be divided into the end surface shape of its coiling
Round, ellipse and oblong structure, wherein the anti-short circuit capability of circular coil is most strong, cost highest, and oblong coil is anti-
Short-circuit capacity is worst, and cost is minimum, and oval coil falls between, and for cost consideration, most of producer will at this stage
Loop construction designs long circle coil.Thus, how effectivelying prevent oblong coil, deformation occurs, to improve the machine of the coil
Tool intensity and anti-short circuit capability are current technical problems urgently to be solved.
Summary of the invention
The purpose of this utility model seeks to solve the oblong structure that current producer generallys use oil-immersed transformer
Coil exist be easy to happen deformation, bad mechanical property, and the problem of anti-short circuit capability difference, providing one kind thus prevents deformation
Oil-immersed transformer coil assembly.
The concrete scheme of the utility model is: a kind of oil-immersed transformer coil assembly preventing deformation, including iron core and
The cross section of the coil being wound on the outside of iron core, coil is in oblong structure, it is characterized in that: at the end of coil left and right side
Respectively equipped with sizing cushion block on face；The sizing cushion block is processed into rectangular configuration using insulation board, in the sizing positive left and right of cushion block
Side respectively offers globoidal structure, respectively offers chamfering structure in the left and right side at the sizing cushion block back side, and also open at its back side
Equipped with radiating groove；Two sizing cushion blocks are respectively attached on the end face of coil left and right side with its back side, and constitute ellipse with coil
Shape end face structure.
What the back side of sizing cushion block described in the utility model was arranged symmetrically there are two opening up along its vertically symmetrical center line
Radiating groove.
The vertical side length 300mm, horizontal side length 190mm of sizing cushion block described in the utility model;The slot of the radiating groove
Width is 20mm, groove depth 4mm；The cambered surface radius of the globoidal structure is 10mm；Two side lengths of the chamfering structure are respectively
2mm and 5mm.
The utility model is of simple structure and low cost, by the way that the oblong coil of oil-immersed transformer and two are formed
Cushion block matches the oval end face structure of composition, and effectively preventing coil, deformation occurs during power transformation operation, mechanical
Structural behaviour is stablized, and anti-short circuit capability is significantly enhanced.
Detailed description of the invention
Fig. 1 is the overlooking structure diagram of the utility model；
Fig. 2 is the A-A view of Fig. 1；
Fig. 3 is the schematic view of the front view of sizing cushion block in the utility model；
Fig. 4 is the overlooking structure diagram of sizing cushion block in the utility model.
In figure: 1-iron core, 2-coils, 3-sizing cushion blocks, 3a-globoidal structure, 3b-chamfering structure, 3c-heat dissipation
Slot.
Specific embodiment
Referring to Fig. 1-4, a kind of oil-immersed transformer coil assembly preventing deformation, including iron core 1 and be wound on outside iron core 1
The coil 2 of side, the cross section of coil 2 are in oblong structure, respectively equipped with sizing cushion block on the end face of 2 left and right side of coil
3；The sizing cushion block 3 is processed into rectangular configuration using insulation board, and wherein epoxy resin bonded fiber can be selected in insulation board；In shaped pad
The positive left and right side of block 3 respectively offers globoidal structure 3a, and globoidal structure 3a and the cambered surface of the forward and backward side of coil 2 match, with
Ensure the handsome in appearance of coil assembly；Chamfering structure 3b is respectively offered in the left and right side at sizing 3 back side of cushion block, to prevent shaped pad
The seamed edge of block 3 hurts the insulating layer in coil windings, and then the phenomenon that lead to turn-to-turn short circuit；It is also opened up at sizing 3 back side of cushion block
There is the heat for issuing to transformer power transformation operation coil 2 to carry out the radiating groove 3c of heat dissipation discharge；Two sizing cushion blocks 3 are each
It is attached on the end face of 2 left and right side of coil from its back side, and constitutes oval end face structure with coil 2.
The back side of sizing cushion block 3 described in the present embodiment opens up scattered there are two being arranged symmetrically along its vertically symmetrical center line
Heat channel 3c.
The vertical side length 300mm, horizontal side length 190mm of sizing cushion block 3 described in the present embodiment;The slot of the radiating groove 3c
Width is 20mm, groove depth 4mm；The cambered surface radius of the globoidal structure 3a is 10mm；Two side lengths of the chamfering structure 3b point
It Wei not 2mm and 5mm.
The production technology of the utility model is as follows:
Step 1: around the coil for producing oblong structure arrangement on the outside of iron core, the secondary side of the coil is equipped with more
A tap, to realize the output of different stalls no-load voltage ratio voltage, wherein the 1 gear voltage change ratio of coil is the change of 45.5,3 gear voltages
Than being 41.1 for 43.3,5 gear voltage change ratios；
Step 2: respectively installing one piece of sizing cushion block on the end face of coil left and right side, and binding and fixing are integrated；
Step 3: the coil assembly bound is carried out dipping lacquer and drying and processing.
Anti-short circuit capability analysis for the utility model, has carried out following comparative experiments.
Coil two sides do not install sizing cushion block when, detect each gear reactance change rate of coil as shown in following table 1.1,
Wherein, the coil reactance change rate standard value of national regulations should be less than 7.5%.
Table 1.1:
When sizing cushion block is installed in coil two sides, detect each gear reactance change rate of coil as shown in following table 1.2.
Table 1.2:
Through the data in contrast table 1.1 and table 1.2 it is found that when sizing cushion block is installed in coil two sides, each shelves of coil
The change rate of position reactance is obviously reduced, it is indicated above that transformer is when carrying out power transformation operation, the deformation quantity of coil generation compared with
Small, mechanical structure performance is stablized, so that the anti-short circuit capability of the oil-immersed transformer coil be significantly increased.
Claims (3)
1. a kind of oil-immersed transformer coil assembly for preventing deformation, including iron core and the coil being wound on the outside of iron core, wherein
The cross section of coil is in oblong structure, it is characterized in that: respectively equipped with sizing cushion block on the end face of coil left and right side；It is described fixed
Type cushion block is processed into rectangular configuration using insulation board, globoidal structure is respectively offered in the sizing positive left and right side of cushion block, fixed
The left and right side at the type cushion block back side respectively offers chamfering structure, and is also provided with radiating groove at its back side；Two sizing cushion blocks are each
It is attached on the end face of coil left and right side from its back side, and constitutes oval end face structure with coil.
2. a kind of oil-immersed transformer coil assembly for preventing deformation according to claim 1, it is characterized in that: the sizing
The back side of cushion block opens up that there are two the radiating grooves that are arranged symmetrically along its vertically symmetrical center line.
3. a kind of oil-immersed transformer coil assembly for preventing deformation according to claim 1, it is characterized in that: the sizing
The vertical side length 300mm of cushion block, horizontal side length 190mm;The groove width of the radiating groove is 20mm, groove depth 4mm；The cambered surface knot
The cambered surface radius of structure is 10mm；Two side lengths of the chamfering structure are respectively 2mm and 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820950464.2U CN208271709U (en) | 2018-06-20 | 2018-06-20 | A kind of oil-immersed transformer coil assembly preventing deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820950464.2U CN208271709U (en) | 2018-06-20 | 2018-06-20 | A kind of oil-immersed transformer coil assembly preventing deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208271709U true CN208271709U (en) | 2018-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820950464.2U Active CN208271709U (en) | 2018-06-20 | 2018-06-20 | A kind of oil-immersed transformer coil assembly preventing deformation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597812A (en) * | 2018-06-20 | 2018-09-28 | 湖北网安科技有限公司 | A kind of oil-immersed transformer coil assembly preventing deformation |
-
2018
- 2018-06-20 CN CN201820950464.2U patent/CN208271709U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597812A (en) * | 2018-06-20 | 2018-09-28 | 湖北网安科技有限公司 | A kind of oil-immersed transformer coil assembly preventing deformation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An oil immersed transformer coil assembly for preventing deformation Effective date of registration: 20220113 Granted publication date: 20181221 Pledgee: CITIC Bank Limited by Share Ltd. Huangshi branch Pledgor: HUBEI WANGAN TECHNOLOGY Co.,Ltd. Registration number: Y2022420000011 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |