CN107610917A - A kind of dry-type transformer expoxy glass insulating cylinder improved structure - Google Patents
A kind of dry-type transformer expoxy glass insulating cylinder improved structure Download PDFInfo
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- CN107610917A CN107610917A CN201711009789.7A CN201711009789A CN107610917A CN 107610917 A CN107610917 A CN 107610917A CN 201711009789 A CN201711009789 A CN 201711009789A CN 107610917 A CN107610917 A CN 107610917A
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- insulating cylinder
- expoxy glass
- dry
- type transformer
- glass insulating
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Abstract
The invention discloses a kind of dry-type transformer expoxy glass insulating cylinder improved structure, the dry-type transformer includes low-voltage coil, high-tension coil and iron core, main channel is formed between the high-tension coil and low-voltage coil, the expoxy glass insulating cylinder of inner hollow is set in main channel, the thickness of the expoxy glass insulating cylinder is 10mm, the upper end of expoxy glass insulating cylinder is higher by high-tension coil upper end 300mm, lower end it is low go out high-tension coil lower end 300mm, helical groove is offered on the insulation drum outer wall circumference, the whole drum outer wall that insulate is axially corrugated.In this programme, by the groove that the thick expoxy glass insulation drum outer walls of the 10mm installed additional between transformer high-voltage coil and low-voltage coil main channel are opened up to spiral, increase the pressure-resistant electric field creep distance in insulating cylinder both ends, solve the problems, such as that creepage phenomenon is serious, pressure-resistant ability is enhanced, makes voltage endurance capability being improved to significant on the basis of national standard, disposable qualification rate increase of dispatching from the factory, also by former height reduction 200mm unshakable in one's determination, production cost is reduced.
Description
Technical field
The present invention relates to the dry-type power transformer of poured with epoxy resin to have a taste of aspect, more particularly to a kind of dry-type transformer
Expoxy glass improved structure.
Background technology
At present, existing expoxy glass dry type transformer insulating cylinder outer surface is smooth, in the case of raising electric-field intensity
The creepage phenomenon on expoxy glass insulating cylinder surface is serious, causes insulation tube outer surface to have electric discharge arc light, therefore in increase electric-field strength
When spending, high-tension coil outer surface is easily breakdown, causes the damage of transformer, and shielding is fabricated separately in domestic majority now
Layer, and between screen layer is placed on into high-low pressure winding, high-tension coil is placed in internal layer, and low-voltage coil is placed in outer layer, screen layer
It is wrapped in a copper foil or aluminium foil outside coil, this structure operation is complex, and shield effectiveness is bad.
The content of the invention
It is an object of the invention to：Overcome the deficiencies in the prior art, there is provided it is a kind of simple in construction, insulating cylinder surface can be improved
Creepage phenomenon is serious, and a kind of dry-type transformer expoxy glass insulating cylinder improved structure that shield effectiveness is bad.
The technical solution adopted by the present invention is as follows：
A kind of dry-type transformer expoxy glass insulating cylinder improved structure, the dry-type transformer include low-voltage coil, high pressure
Coil and iron core, main channel is formed between the high-tension coil and low-voltage coil, the epoxy glass of inner hollow is set in main channel
Glass insulating cylinder, the thickness of the expoxy glass insulating cylinder is 10mm, and the upper end of expoxy glass insulating cylinder is higher by high-tension coil upper end
300mm, lower end it is low go out high-tension coil lower end 300mm, it is described insulation drum outer wall circumference on offer helical groove, whole insulating cylinder
Outer wall is axially corrugated.
In this programme, pass through the thick expoxy glass of the 10mm that will be installed additional between transformer high-voltage coil and low-voltage coil main channel
Insulation drum outer wall opens up the groove of spiral, increases expoxy glass insulating cylinder both ends and applies pressure-resistant electric field creep distance outside, solves
The problem of creepage phenomenon is serious, enhances and apply pressure-resistant ability outside anti-, make voltage endurance capability arriving significantly on the basis of national standard
Raising, the disposable qualification rate of dispatching from the factory increase.
Further, the helical groove depth that opens up of insulation drum outer wall is 5mm, width 5mm, phase helical groove bottom
Distance is 10mm between portion.
Further, the height reduction 200mm unshakable in one's determination of the dry-type transformer, reduces production cost.
Preferably, the insulating cylinder inwall solidifies one layer of screen layer, and it is complex to solve existing structure operation, and shields
The problem of ineffective.
Further, the screen layer in the insulating barrier is a copper foil or aluminium foil.
Further, the insulation tube outer surface, which is coated, has one layer of PRTV anti-soil to dodge coating.Enhance insulating cylinder anti-soil energy
Power, and meet Anti-corrosion design.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, in the present invention, the thick epoxy glass of the 10mm that will be installed additional between transformer high-voltage coil and low-voltage coil main channel is passed through
Glass insulation drum outer wall opens up the groove of spiral, increases expoxy glass insulating cylinder both ends and applies pressure-resistant electric field creep distance outside, solves
The problem of creepage phenomenon is serious, enhances pressure-resistant ability, make voltage endurance capability on the basis of national standard to significantly carrying
Height, disposable qualification rate increase of dispatching from the factory.
2nd, the height reduction 200mm unshakable in one's determination of dry-type transformer, reduces production cost.
3rd, insulating cylinder inwall solidifies one layer of copper foil or foil shielding layer.It is complex to solve existing structure operation, and
The problem of shield effectiveness is bad.
4th, insulation tube outer surface, which is coated, has one layer of PRTV anti-soil to dodge coating.Insulating cylinder stain resistance is enhanced, and is met
Anti-corrosion design.
Brief description of the drawings
Fig. 1 is insulating cylinder plane explosion views of the present invention；
Fig. 2 is insulating cylinder top view of the present invention；
Fig. 3 is insulating cylinder front view of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
A kind of dry-type transformer expoxy glass insulating cylinder improved structure, the dry-type transformer include low-voltage coil, high pressure
Coil and iron core, main channel is formed between the high-tension coil and low-voltage coil, the epoxy glass of inner hollow is set in main channel
Glass insulating cylinder, the thickness of the expoxy glass insulating cylinder is 10mm, and the upper end of expoxy glass insulating cylinder is higher by high-tension coil upper end
300mm, lower end it is low go out high-tension coil lower end 300mm, it is described insulation drum outer wall circumference on offer helical groove, whole insulating cylinder
Outer wall is axially corrugated.
In this programme, pass through the thick expoxy glass of the 10mm that will be installed additional between transformer high-voltage coil and low-voltage coil main channel
Insulation drum outer wall opens up the groove of spiral, increases expoxy glass insulating cylinder both ends and applies pressure-resistant electric field creep distance outside, solves
The problem of creepage phenomenon is serious, measuring body ability is enhanced, makes voltage endurance capability being improved to significant on the basis of national standard,
Disposable qualification rate of dispatching from the factory increases.
Further, the helical groove depth that opens up of insulation drum outer wall is 5mm, width 5mm, adjoining spiral groove
Distance is 10mm between bottom.
Further, the height reduction 200mm unshakable in one's determination of the dry-type transformer, reduces production cost.
For example, 35kv voltage class epoxy resin pouring dry type power transformers, requirements of the national standard delivery test voltage
72kv, when voltage is added to 68kv, high-tension coil outer surface electric field creepage phenomenon is more serious, in expoxy glass insulating cylinder appearance
There is electric discharge arc light in face, easily punctures high-tension coil outer surface, and this voltage tester is less than national factory calibration 5%, when in transformation
The thick expoxy glass insulating cylinders of 10mm, edge cylinder upper and lower end are installed in device general assembly additional between high-tension coil and low-voltage coil main channel
High-tension coil upper and lower side 300mm is higher by, it is 5mm that glass insulation cylinder is processed into a depth on lathe, and width is 5mm circumferentials
Groove, circumferential groove interval 5mm, insulating cylinder upper and lower end needs to be higher by high-tension coil upper and lower end 300mm, dispatch from the factory it is outer apply it is pressure-resistant
In experiment, when test voltage raises, just reduced in the creepage phenomenon for being machined with helical form expoxy glass insulating cylinder surface, simultaneously
Also by former window height reduction 200mm unshakable in one's determination, apply outside it is pressure-resistant reach 77kv, 6% is improved on the basis of national standard, first-time qualification rate
Reach 95%, improve 45% than former first-time qualification rate, cost unshakable in one's determination reduces by 8%.
Preferably, the insulating cylinder inwall solidifies one layer of screen layer.It is complex to solve existing structure operation, and shields
The problem of ineffective.
Further, the screen layer in the insulating barrier is a copper foil or aluminium foil.
Further, the insulation tube outer surface, which is coated, has one layer of PRTV anti-soil to dodge coating.Enhance insulating cylinder anti-soil energy
Power, and meet Anti-corrosion design.
Embodiment 1
A kind of dry-type transformer expoxy glass insulating cylinder improved structure, the dry-type transformer include low-voltage coil, high pressure
Coil and iron core, main channel is formed between the high-tension coil and low-voltage coil, the epoxy glass of inner hollow is set in main channel
Glass insulating cylinder, the thickness of the expoxy glass insulating cylinder is 10mm, and the upper end of expoxy glass insulating cylinder is higher by high-tension coil upper end
300mm, lower end it is low go out high-tension coil lower end 300mm, it is described insulation drum outer wall circumference on offer helical groove, whole insulating cylinder
Outer wall is axially corrugated.
Embodiment 2
On the basis of embodiment 1, the helical groove depth that opens up of insulation drum outer wall is 5mm, width 5mm, phase spiral shell
Distance is 10mm between revolving bottom portion of groove.
Embodiment 3
On the basis of embodiment 1, the height reduction 200mm unshakable in one's determination of the dry-type transformer.
Embodiment 4
On the basis of embodiment 1, the insulating cylinder inwall solidifies one layer of screen layer.
Embodiment 5
On the basis of embodiment 3, the screen layer in the insulating barrier is a copper foil or aluminium foil.
Embodiment 6
On the basis of embodiment 1, the insulation tube outer surface is coated and has one layer of PRTV anti-soil to dodge coating.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (6)
- A kind of 1. dry-type transformer expoxy glass insulating cylinder improved structure, it is characterised in that：The dry-type transformer includes low pressure Coil, high-tension coil and iron core, main channel is formed between the high-tension coil and low-voltage coil, inner hollow is set in main channel Expoxy glass insulating cylinder, the thickness of the expoxy glass insulating cylinder is 10mm, and the upper end of expoxy glass insulating cylinder is higher by high pressure Coil upper end 300mm, lower end it is low go out high-tension coil lower end 300mm, it is described insulation drum outer wall circumference on offer helical groove, it is whole Individual insulation drum outer wall is axially corrugated.
- A kind of 2. dry-type transformer expoxy glass insulating cylinder improved structure according to claim 1, it is characterised in that：It is described The helical groove depth that opens up of insulation drum outer wall is 5mm, width 5mm, and distance is 10mm between adjoining spiral bottom portion of groove.
- A kind of 3. dry-type transformer expoxy glass insulating cylinder improved structure according to claim 1, it is characterised in that：It is described The height reduction 200mm unshakable in one's determination of dry-type transformer.
- A kind of 4. dry-type transformer expoxy glass insulating cylinder improved structure according to claim 1, it is characterised in that：It is described Insulating cylinder inwall solidifies one layer of screen layer.
- A kind of 5. dry-type transformer expoxy glass insulating cylinder improved structure according to claim 3, it is characterised in that：It is described Screen layer in insulating barrier is a copper foil or aluminium foil.
- A kind of 6. dry-type transformer expoxy glass insulating cylinder improved structure according to claim 4, it is characterised in that：It is described Insulation tube outer surface is coated and has one layer of PRTV anti-soil to dodge coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009789.7A CN107610917A (en) | 2017-10-25 | 2017-10-25 | A kind of dry-type transformer expoxy glass insulating cylinder improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009789.7A CN107610917A (en) | 2017-10-25 | 2017-10-25 | A kind of dry-type transformer expoxy glass insulating cylinder improved structure |
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| Publication Number | Publication Date |
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| CN107610917A true CN107610917A (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711009789.7A Pending CN107610917A (en) | 2017-10-25 | 2017-10-25 | A kind of dry-type transformer expoxy glass insulating cylinder improved structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562995A (en) * | 2020-12-10 | 2021-03-26 | 中国人民解放军国防科技大学 | High-power pulse transformer with corrugated winding structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201859755U (en) * | 2010-10-26 | 2011-06-08 | 河南逐鹿电器有限公司 | Coil of dry type transformer |
| CN204303517U (en) * | 2014-12-31 | 2015-04-29 | 金盘电气集团（上海）有限公司 | Dry type many pulse waves output transformer |
| CN205177586U (en) * | 2015-11-19 | 2016-04-20 | 扬州市鑫源电气有限公司 | Outdoor use insulating cylinder testing transformer |
-
2017
- 2017-10-25 CN CN201711009789.7A patent/CN107610917A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201859755U (en) * | 2010-10-26 | 2011-06-08 | 河南逐鹿电器有限公司 | Coil of dry type transformer |
| CN204303517U (en) * | 2014-12-31 | 2015-04-29 | 金盘电气集团（上海）有限公司 | Dry type many pulse waves output transformer |
| CN205177586U (en) * | 2015-11-19 | 2016-04-20 | 扬州市鑫源电气有限公司 | Outdoor use insulating cylinder testing transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562995A (en) * | 2020-12-10 | 2021-03-26 | 中国人民解放军国防科技大学 | High-power pulse transformer with corrugated winding structure |
| CN112562995B (en) * | 2020-12-10 | 2021-11-05 | 中国人民解放军国防科技大学 | High-power pulse transformer with corrugated winding structure |
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Application publication date: 20180119 |
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