CN104752037A - Method for improving mechanical strength of transformer coil and winding method of coil - Google Patents
Method for improving mechanical strength of transformer coil and winding method of coil Download PDFInfo
- Publication number
- CN104752037A CN104752037A CN201510194565.2A CN201510194565A CN104752037A CN 104752037 A CN104752037 A CN 104752037A CN 201510194565 A CN201510194565 A CN 201510194565A CN 104752037 A CN104752037 A CN 104752037A
- Authority
- CN
- China
- Prior art keywords
- coil
- bayonet socket
- winding
- inner bracing
- bracing strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses a method for improving mechanical strength of a transformer coil. The method is that an external supporting strip is added to the outer side of the coil; a first clamping opening is formed in one end of an insulation cushion block, and while a second clamping opening is formed in the other end of the insulation cushion block; the shape of the first clamping opening is in match with the structure of an inner supporting strip; the inner supporting strip is clamped on the first clamping opening; the shape of the second clamping opening is in match with the structure of the external supporting strip, and the external supporting strip is clamped on the second clamping opening; the thickness of an insulation barrel is increased, and the thickness of the inner supporting strip is reduced. The invention further discloses a coil winding method. The method comprises the steps of manufacturing a winding die; fixing the insulation barrel on the winding die; fixing the inner supporting strip on the outer surface of the insulation barrel; clamping the first clamping opening on the inner supporting strip; winding the coil by a continuous manner, wherein the insulation cushion block between cakes are compressed and arranged in order during winding; clamping the external supporting strip on the second clamping opening; compressing the coil. With the adoption of the method, the mechanical strength of the coil can be obviously improved, and the service life of the coil can be prolonged.
Description
Technical field
The invention belongs to transformer technology field, particularly relate to a kind of method improving transformer coil mechanical strength.
Background technology
The Winding in Power Transformer made by insulating cylinder, inner bracing strip, cross-over block etc.; Insulating cylinder is formula integrally, and its effect is the predominating insulation between coil and iron core, plays a supportive role to the diametral force inside coil simultaneously; Inner bracing strip is the axial support point of coil, and its effect improves coil overall mechanical strength, is also asphalt channel inside coil; Cross-over block is the strong point and asphalt channel between coil cake, and as shown in Figure 1, traditional cross-over block 100 only has one end to have bayonet socket 101, and this bayonet socket 101 and inner bracing strip clamping, clamp inner bracing strip.
Power transformer is in running, inevitably suffer the impact of various short circuit current, when particularly there is short trouble in the outlet of power transformer or near region, short time current suddenlys change, ampere-turn is uneven, leakage field is under normal circumstances tens times even hundred times, huge short-circuit impact electric current is subject to very large electric power by making Transformer Winding, and winding is sharply generated heat and produces higher temperature, at a higher temperature, the mechanical strength of wire diminishes, again due to insulating cylinder, inner bracing strip and cross-over block are all the intermediaries that electric power is transmitted, adopt traditional insulating cylinder, the winding that inner bracing strip and cross-over block are made, because the mechanical strength of transformer coil is inadequate, under huge electrodynamic action, inner bracing strip will be caused, cross-over blocks etc. are shifted, thus cause coil gross distortion normally not use, transformer can not be worked, transformer is short for useful life.
Summary of the invention
Technical problem to be solved by this invention is to provide and a kind ofly improves the method for transformer coil mechanical strength and the winding method of coil, can significantly improve the mechanical strength of coil, the useful life of extension coil.
The present invention solves a kind of method improving transformer coil mechanical strength that its technical problem adopts:
A, the outside of coil increase outer stay;
B, cross-over block is made into one end has the first bayonet socket, the other end has the second bayonet socket; The described shape of the first bayonet socket and the structure of inner bracing strip match, and described inner bracing strip is connected on the first bayonet socket; The described shape of the second bayonet socket and the structure of outer stay match, and described outer stay is connected on the second bayonet socket;
The thickness of C, increase insulating cylinder, reduces the thickness of inner bracing strip.
Preferably, the thickness of the copper cash of coiling and width are all increased.
Preferably, described first bayonet socket and the second bayonet socket are T-shaped groove.
The present invention also provides a kind of winding method of coil, comprises the following steps:
A, making winding former, be fixed on insulating cylinder on winding former;
B, inner bracing strip is fixed on the outer surface of insulating cylinder;
C, the first bayonet socket of cross-over block is connected on inner bracing strip;
D, employing Continuous winding coiling, in winding process, compress the cross-over block between cake and marshalling;
E, be connected to outer stay by cross-over block the second bayonet socket on, coil pressing.
The invention has the beneficial effects as follows: by changing the shape of cross-over block, the two ends of cross-over block arrange the first bayonet socket 41 respectively, second bayonet socket, increase outer stay simultaneously, the shape of the first bayonet socket and the structure of inner bracing strip match, inner bracing strip is connected on the first bayonet socket, the shape of the second bayonet socket and the structure of outer stay match, outer stay is connected on the second bayonet socket, inner bracing strip is connected by cross-over block with outer stay, coil is placed between inner bracing strip and outer stay, like this, inner bracing strip, outer stay, cross-over block becomes as a whole with coil, thus can inner bracing strip be reinforced, the strong point of outer stay and cross-over block, improve the mechanical strength of coil, by increasing the thickness of insulating cylinder, reducing the thickness of inner bracing strip, being increased on insulating cylinder by the portion size of the reduction of inner bracing strip, reduce the thickness of inner bracing strip, the thickness of inner bracing strip reduces, and inner bracing strip is more not easily shifted, meanwhile, increase the thickness of insulating cylinder, the thickness of insulating cylinder is thickening, and the mechanical strength of whole coil is improved further.
This design can be applied in the overhaul of power transformer, is particularly useful for the maintenance coil winding operation of Circuit Fault on Secondary Transformer winding deformation fault; This design operation is simple, easy to make, practical, easily grasps; This design can make coil overall mechanical strength degree increase, and improves anti-short circuit capability, increases the service life; The method can be commonly used to transformer coil and reinforces and improve mechanical strength.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional cross-over block;
Fig. 2 is the schematic side view of Fig. 1;
Shown in Fig. 1 and Fig. 2: 100-cross-over block, 101-bayonet socket;
Fig. 3 is cross-over block structural representation of the present invention;
Fig. 4 is the schematic side view of Fig. 3;
Fig. 5 is winding cross-section schematic diagram of the present invention;
Fig. 6 is the enlarged diagram in A portion in Fig. 5;
Shown in Fig. 3 ~ Fig. 6: 1-coil, 2-insulating cylinder, 3-inner bracing strip, 4-cross-over block, 41-first bayonet socket, 42-second bayonet socket, 5-outer stay.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figures 3 to 6, the method for raising transformer coil mechanical strength of the present invention,
A, the outside of coil 1 increase outer stay 5;
B, cross-over block 4 is made into one end has the first bayonet socket 41, the other end has the second bayonet socket 42; The described shape of the first bayonet socket 41 and the structure of inner bracing strip 3 match, and described inner bracing strip 3 is connected on the first bayonet socket 41; The described shape of the second bayonet socket 42 and the structure of outer stay 5 match, and described outer stay 5 is connected on the second bayonet socket 42;
The thickness of C, increase insulating cylinder 2, reduces the thickness of inner bracing strip 3.
By changing the shape of cross-over block 4, the two ends of cross-over block 4 arrange the first bayonet socket 41 respectively, second bayonet socket 42, increase outer stay 5 simultaneously, the shape of the first bayonet socket 41 and the structure of inner bracing strip 3 match, inner bracing strip 3 is connected on the first bayonet socket 41, the shape of the second bayonet socket 42 and the structure of outer stay 5 match, outer stay 5 is connected on the second bayonet socket 42, inner bracing strip 3 is connected by cross-over block 4 with outer stay 5, coil 1 is placed between inner bracing strip 3 and outer stay 5, like this, inner bracing strip 3, outer stay 5, cross-over block 4 is as a whole with coil 1 one-tenth, thus inner bracing strip 3 can be reinforced, the strong point of outer stay 5 and cross-over block 4, improve the mechanical strength of coil 1, by increasing the thickness of insulating cylinder 2, reducing the thickness of inner bracing strip 3, being increased to by the portion size of the reduction of inner bracing strip 3 on insulating cylinder 2, reduce the thickness of inner bracing strip 3, the thickness of inner bracing strip 3 reduces, and inner bracing strip 3 is more not easily shifted, meanwhile, increase the thickness of insulating cylinder 2, the thickness of insulating cylinder 2 is thickening, and the mechanical strength of whole coil is improved further.
As preferred embodiment, the thickness of the copper cash of coiling 1 and width are all increased.By increasing thickness and the width of copper cash, the mechanical strength of whole coil can be improved further.
In order to make cross-over block 4, inner bracing strip 3 and outer stay 5 are blocked more firm, be not easy to loosen, the mechanical strength of further raising coil, as preferred embodiment, described first bayonet socket 41 and the second bayonet socket 42 are T-shaped groove, meanwhile, the clamping joint of inner bracing strip 3 and outer stay 5 be also designed to match with the first bayonet socket 41, second bayonet socket 42 T-shaped head.
A winding method for coil, comprises the following steps:
A, making winding former, be fixed on winding former by insulating cylinder 2;
B, inner bracing strip 3 is fixed on the outer surface of insulating cylinder 2; Such as: with glue, inner bracing strip 3 is bonded on the outer surface of insulating cylinder 2;
C, the first bayonet socket 41 of cross-over block 4 is connected on inner bracing strip 3;
D, employing Continuous winding coiling 1, in winding process, compress the cross-over block 4 between cake and marshalling;
E, be connected to outer stay 5 by cross-over block 4 the second bayonet socket 42 on, coil pressing 1.Outer stay 5 is installed, prevents from destroying electromagnetic wire insulation, and coil pressing 1, prevent cross-over block 4 to be shifted.
Embodiment 1
Improve the method for transformer coil mechanical strength:
The thickness of insulating cylinder 2 is increased to 6mm by 3.5mm, and the thickness of inner bracing strip 3 is reduced to 11mm by 16mm, and the size of the copper cash of coiling becomes 2.8X12.5mm from 2X12mm, and the thickness of the outer stay 5 increased is 5mm; Cross-over block 4 has bayonet socket by only one end and changes two ends into and all have bayonet socket, be respectively the first bayonet socket 41, the other end has the second bayonet socket 42, first bayonet socket 41 and the second bayonet socket 42 are T-shaped groove, the clamping joint of inner bracing strip 3 and outer stay 5 be also designed to match with the first bayonet socket 41, second bayonet socket 42 T-shaped head, inner bracing strip 3 is connected on the first bayonet socket 41, and outer stay 5 is connected on the second bayonet socket 42.
Embodiment 2
The winding method of coil:
A, making winding former, be fixed on 6mm insulating paper cylinder on winding former;
B, with glue, inner bracing strip is fixed on insulating paper cylinder outer surface again;
C, cross-over block first bayonet socket is connected on inner bracing strip;
D, electromagnetic wire is placed on shelf, adopts Continuous winding coiling; Between winding process coil cake, cross-over block must compress marshalling;
After E, coil winding are complete, outer stay is connected on the second bayonet socket by cross-over block; When adding outer stay, prevent from destroying electromagnetic wire insulation, and coil pressing, prevent cushion block to be shifted.
Claims (4)
1. improve a method for transformer coil mechanical strength, it is characterized in that:
A, the outside of coil (1) increase outer stay (5);
B, cross-over block (4) is made into one end has the first bayonet socket (41), the other end has the second bayonet socket (42); The shape of described first bayonet socket (41) and the structure of inner bracing strip (3) match, and described inner bracing strip (3) is connected on the first bayonet socket (41); The shape of described second bayonet socket (42) and the structure of outer stay (5) match, and described outer stay (5) is connected on the second bayonet socket (42);
The thickness of C, increase insulating cylinder (2), reduces the thickness of inner bracing strip (3).
2. the method improving transformer coil mechanical strength as claimed in claim 1, is characterized in that: the thickness of the copper cash of coiling (1) and width are all increased.
3. the method improving transformer coil mechanical strength as claimed in claim 1 or 2, is characterized in that: described first bayonet socket (41) and the second bayonet socket (42) are T-shaped groove.
4. a winding method for coil, comprises the following steps:
A, making winding former, be fixed on winding former by insulating cylinder (2);
B, inner bracing strip (3) is fixed on the outer surface of insulating cylinder (2);
C, first bayonet socket (41) of cross-over block (4) is connected on inner bracing strip (3);
D, employing Continuous winding coiling (1), in winding process, compress the cross-over block (4) between cake and marshalling;
E, be connected to outer stay (5) by cross-over block (4) the second bayonet socket (42) on, coil pressing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194565.2A CN104752037A (en) | 2015-04-22 | 2015-04-22 | Method for improving mechanical strength of transformer coil and winding method of coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194565.2A CN104752037A (en) | 2015-04-22 | 2015-04-22 | Method for improving mechanical strength of transformer coil and winding method of coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104752037A true CN104752037A (en) | 2015-07-01 |
Family
ID=53591573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510194565.2A Pending CN104752037A (en) | 2015-04-22 | 2015-04-22 | Method for improving mechanical strength of transformer coil and winding method of coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104752037A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109727754A (en) * | 2017-10-30 | 2019-05-07 | 特变电工沈阳变压器集团有限公司 | A kind of loop construction and its winding method |
-
2015
- 2015-04-22 CN CN201510194565.2A patent/CN104752037A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109727754A (en) * | 2017-10-30 | 2019-05-07 | 特变电工沈阳变压器集团有限公司 | A kind of loop construction and its winding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203760288U (en) | Low-voltage foil winding structure used for onload capacity regulating transformer | |
| CN201478060U (en) | Clamping device of transformer yoke | |
| CN209071072U (en) | A kind of audio-frequency transformer of maintenance easy to disassemble | |
| CN104752037A (en) | Method for improving mechanical strength of transformer coil and winding method of coil | |
| CN206148248U (en) | A insulation system that is used for oval transformer ware body | |
| CN205069348U (en) | Iron core single -phase auto -transformer is rolled up to dry -type | |
| CN101599346A (en) | A kind of low-loss high-impedance electric power transformer | |
| CN201112071Y (en) | Pie type silicon steel sheet magnetic conductive iron core | |
| CN201369220Y (en) | Foil winding structure of low-voltage coil | |
| CN201570357U (en) | Amorphous alloy transformer and low-voltage coil structure thereof | |
| CN209515418U (en) | A kind of power transformer assembled iron nail pressing | |
| CN102629514B (en) | Oil duct structure in press fitting of high voltage converter transformer and handling method of oil duct | |
| CN206558326U (en) | A kind of insulation system of oil immersed type high overload transformer body | |
| CN205943735U (en) | A wire winding mould for epoxy dry type transformer high pressure segmentation laminar rectangular coil | |
| CN202205561U (en) | Transformer tap lead bracket | |
| CN201562773U (en) | Center tap of high-fit adjustable tubular bus | |
| CN205178693U (en) | Novel motor stator | |
| CN204117825U (en) | A kind of electromagnetic potential transformer | |
| CN202816613U (en) | Insulation structure of transformer | |
| CN109817434A (en) | Amorphous alloy transformer and its winding assembly | |
| CN208507419U (en) | Copper foil winding switching mode power supply transformer | |
| CN103050250A (en) | Coil end insulation structure of transformer | |
| CN203085331U (en) | Dry type transformer tapping nut structure | |
| CN208256475U (en) | A kind of transformer coil casting die | |
| CN201859752U (en) | 220kV-level power transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150701 |
|
| RJ01 | Rejection of invention patent application after publication |