CN206947142U - Insulation encapsulated transformer and its high pressure winding skeleton - Google Patents
Insulation encapsulated transformer and its high pressure winding skeleton Download PDFInfo
- Publication number
- CN206947142U CN206947142U CN201720848669.5U CN201720848669U CN206947142U CN 206947142 U CN206947142 U CN 206947142U CN 201720848669 U CN201720848669 U CN 201720848669U CN 206947142 U CN206947142 U CN 206947142U
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- Prior art keywords
- pressure winding
- high pressure
- skeleton
- winding skeleton
- low pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
Abstract
The utility model discloses a kind of insulation encapsulated transformer, including：Iron core；Both ends insertion is in the high pressure winding skeleton of straight barrel type；And both ends insertion is in the low pressure winding skeleton of straight barrel type；Wherein, high pressure winding skeleton and low pressure winding skeleton head and the tail compartment of terrain alignment on the same line, iron core is through being arranged with the high pressure winding skeleton of high pressure winding and be arranged with the low pressure winding skeleton of low pressure winding, also, the side of high pressure winding skeleton one end and iron core away from low pressure winding skeleton is arranged at intervals；It is arranged with the high pressure winding skeleton of high pressure winding and the gap embedding insulating materials that is arranged between the low pressure winding skeleton of low pressure winding and iron core is formed with insulating barrier.By above-mentioned embodiment, the insulation path of insulator interface can be effectively increased, while saves material, while the insulating properties of transformer are improved, reduces cost.
Description
Technical field
The structure design and technique that the utility model is related to insulation encapsulated transformer manufacture, more particularly to a kind of insulation encapsulated
Transformer and its high pressure winding skeleton.
Background technology
Insulation encapsulated transformer is a kind of dry-type transformer of special construction, is mainly used in a variety of high-tension apparatuses and high pressure
Instrument.
The main member of transformer is armature winding, secondary windings, skeleton, insulation system and iron core（Magnetic core）.Insulation fills
The effect of envelope is the space for making solid insulating material fill up between winding, skeleton and iron core, improves transformer in high-pressure work bar
Dielectric strength under part.The advantages of solid insulating material is dielectric strength height, and major defect is that insulation is once damaged, can not
Recover.In insulation encapsulated transformer insulation structure, the interface that can be formed between different materials between skeleton and Embedding Material.Such as
Fruit forms chemical bond crosslinking between different insulating materials molecules, is insulated along the dielectric strength at interface and two kinds of materials weaker
The dielectric strength ratio of material, it is essentially identical.But consider actual dosing technology, under the working condition of most of product, embedding
Material and other insulating materials are intermolecular simply partly to form chemical bond, while miscellaneous caused by production environment interface is unclean
The defects of matter, micro-bubble, dielectric strength of the real material interface along interface are far below the dielectric strength of material.As long as interface
It is not vertical with direction of an electric field, it is easy for occurring along interface shelf depreciation, causes insulation constantly to decline, aging, until breakdown.
The high pressure Winding Design of conventional high-tension transformer is passed through frequently with layer coiling.The advantages of layer coiling is turn-to-turn voltage
Low, voltage between layers is easily separated, and turn-to-turn insulation, layer insulation easily solve, and skeleton structure is simple, can make straight tube shape, such as
Shown in Fig. 1.Straight tube skeleton can be molded production, and mould and production cost are relatively low.
Straight tube skeleton is in high-tension transformer using extensive.Current insulation encapsulated design of transformer, straight tube skeleton are enclosed on
On iron core, skeleton one end contacts with iron core, the other end contacts with secondary framework, and winding and iron core or secondary framework is exhausted after embedding
Edge is on the interface between Embedding Material and skeleton, and interface length is exactly air line distance of the winding to side iron core, such as Fig. 2 institutes
Show.Therefore, using the insulation encapsulated transformer of such a design, only using longer core window and longer skeleton, insulation
Intensity just can guarantee that, cause volume of transformer bigger than normal, cost is higher.
Utility model content
The utility model provides a kind of insulation encapsulated transformer to solve above-mentioned technical problem, can be effectively increased insulation circle
The insulation path in face, while material is saved, while the insulating properties of transformer are improved, reduce cost.
In order to solve the above technical problems, the utility model provides a kind of insulation encapsulated transformer, including：Iron core；Both ends are passed through
The logical high pressure winding skeleton in straight barrel type；And both ends insertion is in the low pressure winding skeleton of straight barrel type；Wherein, the high pressure winding
Head and the tail compartment of terrain alignment, the iron core pass through and are arranged with high voltage winding on the same line for skeleton and the low pressure winding skeleton
The high pressure winding skeleton of group and the low pressure winding skeleton for being arranged with low pressure winding, also, the high pressure winding skeleton
One end and the side of the iron core away from the low pressure winding skeleton are arranged at intervals；Further, it is arranged with high pressure winding
The high pressure winding skeleton and the gap embedding being arranged between the low pressure winding skeleton of low pressure winding and the iron core
Insulating materials is formed with insulating barrier.
Further, the high pressure winding skeleton both ends respectively between the iron core and the low pressure winding skeleton between
Away from equal.
Further, the wall thickness of the high pressure winding skeleton is 4mm.
Further, the minimum spacing between the high pressure winding skeleton and the iron core is 2mm.
Further, the high pressure winding to the distance of the high pressure winding skeleton end face be 4mm.
Further, the one end of the low pressure winding skeleton away from the high pressure winding skeleton and the opposite side of the iron core
Abut.
Further, the high pressure winding skeleton is skeleton made of PBT material.
Further, the low pressure winding skeleton is skeleton made of PBT material.
Further, the insulating materials for forming the insulating barrier is epoxy resin.
Further, coated on the outside of the iron core by insulation crust.
Insulation encapsulated transformer of the present utility model and its high pressure winding skeleton, have the advantages that：
On the premise of existing transformer overall structure is not changed, the length only by merely shortening high pressure winding skeleton
And then causing a determining deviation between high pressure winding skeleton and iron core be present, at least part for adding high pressure winding skeleton end face can
As insulation path, and then it increase effectively the insulation path of insulator interface.In addition, so saving material, transformation is being improved
While the insulating properties of device, cost is reduced.
Brief description of the drawings
Fig. 1 is the structural representation of prior art high pressure winding skeleton.
Fig. 2 is sectional structure chart of the transformer formed using skeleton shown in Fig. 1 along A-A directions.
Fig. 3 is the sectional structure chart of the utility model insulation encapsulated transformer.
Embodiment
The utility model is described in detail with embodiment below in conjunction with the accompanying drawings.
As shown in figure 3, the utility model provides a kind of insulation encapsulated transformer, including：Iron core 1, high pressure winding skeleton 2 with
And low pressure winding skeleton 5.
Specifically, high pressure winding skeleton 2 is the straight barrel type structure of both ends insertion, low pressure winding skeleton 5 also penetrates for both ends
Straight barrel type structure.Head and the tail compartment of terrain is arranged on the same line and alignment is set for high pressure winding skeleton 2 and low pressure winding skeleton 5
Put, wherein alignment refers to the center line of high pressure winding skeleton 2 and low pressure winding skeleton 5（That is axis）On same straight line.High pressure
High pressure winding 3 is arranged with winding skeleton 2, low pressure winding 6 is arranged with low pressure winding skeleton 5.Iron core 1 passes through high pressure winding bone
Frame 2 and low pressure winding skeleton 5.Its federation is sad, 2 one end away from low pressure winding skeleton 5 of high pressure winding skeleton and the one of iron core 1
Side is arranged at intervals, also, is being arranged with the high pressure winding skeleton 2 of high pressure winding 3 and is being arranged with the low pressure winding bone of low pressure winding 6
Gap embedding between frame 5 and iron core 1 has insulating materials to form insulating barrier 4.
By by the one end of high pressure winding skeleton 2 and 1 setting spaced apart of iron core, having discharged high pressure winding skeleton 2
The a part of of end face can be used as insulation path, and then increase effectively the insulation path of insulator interface.Wherein, insulator interface has
The interface that body phalanges frame and embedding are formed between the insulating materials of the outer wall of the skeleton, insulation path refer specifically to insulator interface
Length.
In above-described embodiment, the one end of low pressure winding skeleton 5 away from high pressure winding skeleton 2 can be directly another with iron core 1
Side abuts.The outside of iron core 1 can generally be coated by insulation crust 7, and the insulation crust 7 can be plastic shell.Separately
Outside, same embedding insulating materials forms insulating barrier 4 between insulation crust 7 and iron core 1.
Wherein it is possible to by the both ends of high pressure winding skeleton 2, the spacing between iron core 1 and low pressure winding skeleton 5 is set respectively
To be equal, it is of course also possible to be arranged to according to demand.
In above-described embodiment, high pressure winding skeleton 2 can be PBT（Polybutylene terephthalate, gather to benzene
Dioctyl phthalate butanediol ester）Skeleton made of material.And low pressure winding skeleton 5 can also be skeleton made of PBT material.And formed
The insulating materials of insulating barrier 4 is epoxy resin.
In actual use, the operating voltage of high pressure winding 3 may be up to 10kV, under this operational voltage level, use
The highest work field strength of the long-term work of insulating barrier 4 made of high pressure winding skeleton 2 made of PBT material and use epoxy resin is about
For 10KV/mm, the insulation minimum safe thickness of high pressure winding skeleton 2 and the long-term work of insulating barrier 4 is 1mm.Safety coefficient（It is actual
The ratio between insulation thickness and dielectric minimum safe thickness）Usually 4, then the thickness of high pressure winding skeleton 2（Refer specifically to wall
It is thick）n=1mm×4=4mm.
Further, need to prevent d positions from stomata occur and influenceing high pressure winding bone during embedding insulating materials
The validity of insulation path corresponding to the end face of frame 2, wherein, spacing of the d between high pressure winding skeleton 2 and iron core 1, d is most
Small value is 2mm；Also, d, which is less than, is equal to (1/2) M, and then M minimum value is 4mm, meanwhile, if considering interface problem, M is also
Need the thickness n more than high pressure winding skeleton 2.M be improvement as shown in Figure 2 before high pressure winding skeleton 2 ' insulator interface it is exhausted
Edge path（The air line distance that high pressure winding 3 ' is arrived between iron core 1 ' i.e. on high pressure winding skeleton 2 '）.
In the utility model embodiment, on the premise of the above situation is met, as shown in figure 3, can be by shortening high pressure
The length of winding skeleton 2 is realized, and meets L1+d=M, and L1 is that high pressure winding 3 arrives high pressure winding skeleton on high pressure winding skeleton 2
The length of 2 end faces.Specifically, M=6mm, d=2mm can be selected, then, L1=M-d=6-2=4mm.And n=4mm is selected, thus
Insulation path L=L1+n=4+4=8mm of insulator interface.It can be seen that after improvement insulator interface of the present utility model insulation path L=
1.33 times of 8mm equal to insulation path M=6mm of the insulator interface of prior art before improving.
Insulation encapsulated transformer of the present utility model and its high pressure winding skeleton, have the advantages that：
On the premise of existing transformer overall structure is not changed, the length only by merely shortening high pressure winding skeleton 2
Spend and then cause a determining deviation between high pressure winding skeleton 2 and iron core 1 be present, add the end face of high pressure winding skeleton 2 at least
Part can be used as insulation path, and then increase effectively the insulation path of insulator interface.In addition, so saving material, carrying
While the insulating properties of high transformer, cost is reduced.
Embodiment of the present utility model is these are only, not thereby limits the scope of the claims of the present utility model, every profit
The equivalent structure or equivalent flow conversion made with the utility model specification and accompanying drawing content, or directly or indirectly it is used in it
The technical field of his correlation, is similarly included in scope of patent protection of the present utility model.
Claims (10)
- A kind of 1. insulation encapsulated transformer, it is characterised in that including：Iron core；Both ends insertion is in the high pressure winding skeleton of straight barrel type；And both ends insertion is in the low pressure winding skeleton of straight barrel type；Wherein, the high pressure winding skeleton and the low pressure winding skeleton head and the tail compartment of terrain alignment on the same line, institute Iron core is stated through being arranged with the high pressure winding skeleton of high pressure winding and be arranged with the low pressure winding skeleton of low pressure winding, Also, the one end of the high pressure winding skeleton away from the low pressure winding skeleton and the side of the iron core are arranged at intervals；Further, it is arranged with the high pressure winding skeleton of high pressure winding and is arranged with the low pressure winding bone of low pressure winding Gap embedding insulating materials between frame and the iron core is formed with insulating barrier.
- 2. insulation encapsulated transformer according to claim 1, it is characterised in that：Spacing of the high pressure winding skeleton both ends respectively between the iron core and the low pressure winding skeleton is equal.
- 3. insulation encapsulated transformer according to claim 1, it is characterised in that：The wall thickness of the high pressure winding skeleton is 4mm.
- 4. insulation encapsulated transformer according to claim 1, it is characterised in that：Minimum spacing between the high pressure winding skeleton and the iron core is 2mm.
- 5. insulation encapsulated transformer according to claim 1, it is characterised in that：The high pressure winding to the distance of the high pressure winding skeleton end face be 4mm.
- 6. insulation encapsulated transformer according to claim 1, it is characterised in that：The one end of the low pressure winding skeleton away from the high pressure winding skeleton abuts with the opposite side of the iron core.
- 7. insulation encapsulated transformer according to claim 1, it is characterised in that：The high pressure winding skeleton is skeleton made of PBT material.
- 8. insulation encapsulated transformer according to claim 1, it is characterised in that：The low pressure winding skeleton is skeleton made of PBT material.
- 9. insulation encapsulated transformer according to claim 1, it is characterised in that：The insulating materials for forming the insulating barrier is epoxy resin.
- 10. insulation encapsulated transformer according to claim 1, it is characterised in that：Coated on the outside of the iron core by insulation crust.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720848669.5U CN206947142U (en) | 2017-07-13 | 2017-07-13 | Insulation encapsulated transformer and its high pressure winding skeleton |
| PCT/CN2017/094892 WO2019010729A1 (en) | 2017-07-13 | 2017-07-28 | Insulated encapsulated transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720848669.5U CN206947142U (en) | 2017-07-13 | 2017-07-13 | Insulation encapsulated transformer and its high pressure winding skeleton |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206947142U true CN206947142U (en) | 2018-01-30 |
Family
ID=61368713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720848669.5U Active CN206947142U (en) | 2017-07-13 | 2017-07-13 | Insulation encapsulated transformer and its high pressure winding skeleton |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206947142U (en) |
| WO (1) | WO2019010729A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11307358A (en) * | 1998-04-24 | 1999-11-05 | Canon Inc | Transformer and assembling method therefor |
| CN201465733U (en) * | 2009-07-10 | 2010-05-12 | 上海西艾爱电子有限公司 | Transformer for epoxy pouring printed circuit board |
| CN201562535U (en) * | 2009-11-03 | 2010-08-25 | 湖北大二互科技有限公司 | Control transformer |
| KR101240854B1 (en) * | 2011-11-11 | 2013-03-11 | 삼성전기주식회사 | Transformer |
| CN203812700U (en) * | 2014-05-04 | 2014-09-03 | 上海美星电子有限公司 | Safety LED convertor |
| CN105405612A (en) * | 2015-11-11 | 2016-03-16 | 铜陵瑞博电子科技有限公司 | Transformer for high-voltage output |
-
2017
- 2017-07-13 CN CN201720848669.5U patent/CN206947142U/en active Active
- 2017-07-28 WO PCT/CN2017/094892 patent/WO2019010729A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2019010729A1 (en) | 2019-01-17 |
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