CN2359788Y - Resin pouring winding air flue shielding structure of power transformer - Google Patents
Resin pouring winding air flue shielding structure of power transformer Download PDFInfo
- Publication number
- CN2359788Y CN2359788Y CN 98221831 CN98221831U CN2359788Y CN 2359788 Y CN2359788 Y CN 2359788Y CN 98221831 CN98221831 CN 98221831 CN 98221831 U CN98221831 U CN 98221831U CN 2359788 Y CN2359788 Y CN 2359788Y
- Authority
- CN
- China
- Prior art keywords
- winding
- power transformer
- resin
- air flue
- shielding structure
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides an air passage shielding structure of a resin pouring winding of a power transformer, which is composed of epoxy resins, a shielding layer and an air passage. The steps of the pouring, high temperature solidification, stripping, etc. of the vacuum epoxy resins are completed by manufacturing the shielding layer, winding the winding and laying a template and the shielding layer. The winding of the air passage shielding structure manufactured by using the novel technology solves the technical problems that the performance of resin composite insulating power transformers can not meet the requirement of a high voltage due to the low dielectric coefficient of air in an insulating layer. The utility model reduces the geometric dimension of an epoxy resin transformer and decreases load consumption and production cost.
Description
The utility model relates to a kind of device of Winding in Power Transformer layer insulation, specifically is exactly power transformer resin-cast winding air flue shielding construction.
In the prior art, the layer insulation mode of Winding in Power Transformer is the compound inslation mode, and its insulating barrier is made of air channel and epoxy resin, the dielectric coefficient height of epoxy resin, and the dielectric coefficient of air is low, easily produces discharge between air flue.
The purpose of this utility model provides a kind of improved Winding in Power Transformer layer insulation structure, i.e. power transformer resin-cast winding air flue shielding construction, and this structure can be avoided the atmospherical discharges between air flue effectively.
The purpose of this utility model is achieved in that the interlayer insulating film with winding changes by air channel, screen and epoxy resin and forms.Screen is positioned at the periphery of air channel, and screen is made by conductor or semi-conducting material, because the electrical characteristics of its material can make the current potential of air channel both sides equal or close, avoids producing between air flue atmospherical discharges.
Below in conjunction with drawings and Examples concrete structure of the present utility model is done following detailed description the in detail.
Fig. 1 is the horizontal section schematic diagram of power transformer resin-cast winding air flue shielding construction.
Fig. 2 is the longitudinal profile schematic diagram of power transformer resin-cast winding air flue shielding construction.
Resin pouring winding air flue shielding structure of power transformer of the present utility model is by screen layer [1], epoxy resin [2] and air channel [3] form, screen layer [1] is positioned at the periphery of air channel [3], From the concrete distribution situation of the air flue shielding structure between its longitudinal profile winding layers [4] be: Winding layers [4] → epoxy resin [2] → screen layer [1] → epoxy resin [2] → air channel [3] → Epoxy resin [2] → screen layer [1] → epoxy resin [2] → winding layers [4].
Embodiment:
The first step: with conductor or semi-conducting material manufacturing screen, its shape is similar to the shape of template, and physical dimension is slightly larger than the physical dimension of template.
Second step: on the winding former of transformer, use electromagnetic wire coiling Transformer Winding.
The 3rd step: in the process of coiling Transformer Winding, screen is sleeved on the outside of template, template and screen are placed between the winding layers together, winding layers can be that individual layer electromagnetic wire or multilayer electromagnetic wire are formed.
The 4th goes on foot: the winding that winds is put into watered in the injection molding, send into and carry out the epoxide resin vacuum cast in the vacuum pouring equipment, after cast finishes, send into and make epoxy resin cure in the sintering oven, after curing finishes, to water injection molding and from sintering oven, take out the demoulding, extract template out, promptly make the winding that air channel has screen.
The utility model is compared with existing technology, solved resin compounded insulating power transformer because of The air dielectric coefficient is low, makes properties of product can not satisfy the technical barrier of high voltage requirement, greatly Dwindle the physical dimension of epoxy resin transformer, reduced load loss and production cost.
Claims (2)
1, power transformer resin-cast winding air flue shielding construction is made up of screen, epoxy resin and air channel, it is characterized in that the air channel periphery has screen.
2, power transformer resin-cast winding air flue shielding construction according to claim 1 is characterized in that screen made by conductor or semi-conducting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98221831 CN2359788Y (en) | 1998-07-17 | 1998-07-17 | Resin pouring winding air flue shielding structure of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98221831 CN2359788Y (en) | 1998-07-17 | 1998-07-17 | Resin pouring winding air flue shielding structure of power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2359788Y true CN2359788Y (en) | 2000-01-19 |
Family
ID=33973301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98221831 Expired - Fee Related CN2359788Y (en) | 1998-07-17 | 1998-07-17 | Resin pouring winding air flue shielding structure of power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2359788Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794663A (en) * | 2010-04-08 | 2010-08-04 | 崔贵峰 | Dry-type iron-core reactor with resin molded coil |
| CN101996751A (en) * | 2010-11-03 | 2011-03-30 | 天津市特变电工变压器有限公司 | Epoxy resin pouring shielding cylinder of transformer |
| CN107946048A (en) * | 2017-12-31 | 2018-04-20 | 江苏天奇新能源集成有限公司 | 110kV resin casting dry-type transformers |
-
1998
- 1998-07-17 CN CN 98221831 patent/CN2359788Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794663A (en) * | 2010-04-08 | 2010-08-04 | 崔贵峰 | Dry-type iron-core reactor with resin molded coil |
| CN101996751A (en) * | 2010-11-03 | 2011-03-30 | 天津市特变电工变压器有限公司 | Epoxy resin pouring shielding cylinder of transformer |
| CN107946048A (en) * | 2017-12-31 | 2018-04-20 | 江苏天奇新能源集成有限公司 | 110kV resin casting dry-type transformers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |