CN204792379U - High vertical insulation system who transships transformer - Google Patents
High vertical insulation system who transships transformer Download PDFInfo
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- CN204792379U CN204792379U CN201520564108.3U CN201520564108U CN204792379U CN 204792379 U CN204792379 U CN 204792379U CN 201520564108 U CN201520564108 U CN 201520564108U CN 204792379 U CN204792379 U CN 204792379U
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- layer
- insulation
- insulating
- polyimide film
- transformer
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- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model discloses a high vertical insulation system who transships transformer. It includes: the coil, it is formed by the coiling of multilayer wire original line, the circle is insulating, and it is the polyimide film layer to the winding is at the former on -line of circle wire, the layer is insulating, and it is the insulating ply of DMD to the setting is adjacent every two -layer the winding between the wire original line of circle insulation. The utility model discloses a coil side separator conduction temperature rise is little, and volume packing rate in coil space is high, and low in manufacturing cost, and the insulating restriction value of F level is satisfied in DMD and the temperature rise of polyimide film material simultaneously, satisfies high insulating requirement of transshipping the transformer.
Description
Technical field
The utility model relates to transformer insulated field, more particularly, relates to a kind of longitudinal insulating structure of high overload transformer.
Background technology
The cable paper of layer insulation employing 5 0.15mm between the former line of existing transformer wire, layer insulation thickness is large, and layer insulation conduction temperature rise is also larger.And turn-to-turn insulation adopts the paper covered wire of 0.45mm, coiling is loosened, and radial pre-degree is large, and coil space volumetric filling ratio is low, and the temperature rise of cable paper material only meets A class F insulation limits value.And to high overload transformer, just more need the problem solving its temperature rise and insulation breakdown, improve its coefficient of safety and extend its useful life.
Utility model content
An object of the present utility model solves at least the problems referred to above, and provide the advantage will illustrated at least below.
The utility model also has an object to be to provide a kind of longitudinal insulating structure of high overload transformer, its layer insulation conduction temperature rise is little, coil space volumetric filling ratio is high, and low cost of manufacture, DMD and polyimide film material temperature rise simultaneously meets F class F insulation limits value, meets the insulating requirements of high overload transformer.
In order to realize these objects of the present utility model and other advantage, the utility model provides a kind of longitudinal insulating structure of high overload transformer, and it comprises:
Coil, it is formed by the former wire-wound system of multi-layer conductor leads;
Turn insulation, it is polyimide film layer, and is wrapped on the former line of wire;
Layer insulation, it is DMD insulating paper layer, and is arranged between the adjacent often two-layer former line of wire being wrapped described turn insulation.
Preferably, polyimide film layer is formed by stacking by vacuum high-pressure by the polyimide film that three layers of 0.035mm is thick, and its thickness is 0.1mm.
Preferably, the thickness of DMD insulating paper layer is 0.15mm.
The utility model at least comprises following beneficial effect: in high overload transformer longitudinal insulation system described in the utility model, DMD layer itself has very high-breakdown-voltage, according to test data, the DMD insulating paper that 0.15mm is thick is minimum withstand voltagely reaches 5KV, between the adjacent former line of every two layer conductor, DMD insulating paper layer is set, compare the cable ply of paper that traditional layer insulation adopts 5 layers of 0.15mm, not only reduce layer insulation thickness, and reduce layer insulation conduction temperature rise.As long as be wound around polyimide film layer that one deck is formed by stacking by vacuum high-pressure by the thick polyimide film of three layers of 0.035mm on the former line of circle wire, six strata imide membranes can be reached between the adjacent former line of two circle wires to separate, damage in insulation when effectively can prevent coiling, and in winding process, compare traditional employing 0.45mm paper covered wire, coiling is tightr, reduce radial wish degree, coil space volumetric filling ratio can be improved while improving winding efficiency, insulated conductive temperature rise between reducing layer simultaneously, reduces manufacturing cost.
Part is embodied by explanation below by other advantage of the present utility model, target and feature, part also will by research and practice of the present utility model by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the longitudinal insulating structure of high overload transformer described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to specification word to make those skilled in the art.
With reference to Fig. 1, the longitudinal insulating structure of high overload transformer comprises:
Coil 11, it is formed by the coiling of multi-layer conductor leads former line 12;
Turn insulation 14, it is polyimide film layer, and is wrapped on the former line 12 of wire;
Layer insulation 13, it is DMD insulating paper layer, and is arranged between the adjacent often two-layer former line 12 of wire being wrapped described turn insulation.
Preferably, the thickness of DMD insulating paper layer is 0.15mm.
Wherein, polyimide film layer can be selected to be formed by stacking by vacuum high-pressure by the polyimide film that three layers of 0.035mm is thick, and its thickness is 0.1mm.Then the polyimide film layer of gained is wrapped on the former line 12 of described wire and obtains turn insulation 14, realize good insulation effect, damage in insulation when effectively can prevent coiling, coiling is tightr, reduce radial wish degree, coil space volumetric filling ratio can be improved while improving winding efficiency, simultaneously insulated conductive temperature rise between reducing layer, reduce manufacturing cost.Simultaneously, thickness can be selected to be the DMD insulating paper layer of 0.15mm, the DMD insulating paper that 0.15mm is thick is minimum withstand voltagely reaches 5KV, between the adjacent former line of every two layer conductor, DMD insulating paper layer is set, compare the cable ply of paper that traditional layer insulation adopts 5 layers of 0.15mm, not only reduce layer insulation thickness, and reduce layer insulation conduction temperature rise.Because DMD insulating paper layer and polyimide film material temperature rise meet F class F insulation limits value, high overload transformer is on the basis that normal temperature rise test requires, meet 1.5 times of rated capacity 6h, 1.75 times of rated capacity 3h, 2.0 times of interim operations continuously of rated capacity 1h, and do not affect transformer normal service life.The performance of the resistance to gentleness insulation of high overload transformer can be made so good, and coefficient of safety is high, longer service life.
In Fig. 1, A, X are top and the end of winding, and 2,4,6 and 3,5,7 leading-out terminals being respectively winding, its objective is the no-load voltage ratio changing winding by connecting different leading-out terminal, connect combination have respectively 2 connect 3,3 connect 4,4 connect 5,5 connect 6,6 connects 7, and winding only has a kind of connected mode at any time.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in specification and execution mode utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (3)
1. a longitudinal insulating structure for high overload transformer, is characterized in that, comprising:
Coil, it is formed by the former wire-wound system of multi-layer conductor leads;
Turn insulation, it is polyimide film layer, and is wrapped on the former line of wire;
Layer insulation, it is DMD insulating paper layer, and is arranged between the adjacent often two-layer former line of wire being wrapped described turn insulation.
2. the longitudinal insulating structure of high overload transformer according to claim 1, is characterized in that, described polyimide film layer is formed by stacking by vacuum high-pressure by the polyimide film that three layers of 0.035mm is thick, and its thickness is 0.1mm.
3. the longitudinal insulating structure of high overload transformer according to claim 1 and 2, is characterized in that, the thickness of described DMD insulating paper layer is 0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520564108.3U CN204792379U (en) | 2015-07-30 | 2015-07-30 | High vertical insulation system who transships transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520564108.3U CN204792379U (en) | 2015-07-30 | 2015-07-30 | High vertical insulation system who transships transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204792379U true CN204792379U (en) | 2015-11-18 |
Family
ID=54532379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520564108.3U Active CN204792379U (en) | 2015-07-30 | 2015-07-30 | High vertical insulation system who transships transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204792379U (en) |
-
2015
- 2015-07-30 CN CN201520564108.3U patent/CN204792379U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A longitudinal insulation structure of high overload transformer Effective date of registration: 20221008 Granted publication date: 20151118 Pledgee: Nanning Branch of Guilin Bank Co.,Ltd. Pledgor: GUANGXI NANBAOTE ELECTRIC MANUFACTURING CO.,LTD. Registration number: Y2022450000170 |