CN203631293U - Outer shielding case of voltage transformer - Google Patents
Outer shielding case of voltage transformer Download PDFInfo
- Publication number
- CN203631293U CN203631293U CN201320818780.1U CN201320818780U CN203631293U CN 203631293 U CN203631293 U CN 203631293U CN 201320818780 U CN201320818780 U CN 201320818780U CN 203631293 U CN203631293 U CN 203631293U
- Authority
- CN
- China
- Prior art keywords
- voltage transformer
- shielding case
- shading ring
- case body
- aluminium alloy
- 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 discloses an outer shielding case of a voltage transformer. The outer shielding case of the voltage transformer includes a shielding case body and a shielding ring which is integrated with the shielding case body at the bottom of the shielding case body. The shielding case body and the shielding ring are made of aluminium alloy. With the adoption of the scheme, the advantages of the outer shielding case of the voltage transformer reside in that: as the shielding case body and the shielding ring are integrated in one piece which is made of aluminium alloy, the internal and external surfaces of the piece are smooth and uniform, and the radius of curvature of the piece is increased. The uniform radius of curvature of the piece enables induced electric fields to distribute uniformly, and accuracy and safety reliable performance are enhanced, thereby reducing influences of the voltage transformer on other devices.
Description
Technical field
The utility model patent relates to voltage transformer, relates in particular to a kind of radome being applied on voltage transformer.
Background technology
At present large multivoltage transformer outer cover is all to adopt steel to be bent into cover body, then is bent into the shape of radome with reinforcing bar, then the shading ring of bending is welded on to cover body bottom.This voltage transformer external shield, its surfaces externally and internally is coarse, and the radius of curvature of shading ring is little, to around Electric Field Distribution and changes of magnetic field, make interiors of products non-uniform electric, disturb instrument transformer normally to work, cause the accuracy of voltage transformer and Power System Security And Reliability is reduced.
Utility model content
The purpose of this utility model is in order to overcome above-mentioned defect, and voltage transformer external shield is provided, and its surfaces externally and internally is smooth evenly, and radius of curvature increases by designing requirement, thereby ensures that Electric Field Distribution is even.
For achieving the above object, the utility model is by the following technical solutions:
A kind of voltage transformer external shield, comprises radome body and the shading ring that is arranged on radome body bottom, and described radome body and shading ring are complex as a whole.
Above-mentioned voltage transformer external shield, the top of shading ring is 3-10mm apart from the distance L of lowermost end.
Above-mentioned voltage transformer external shield, radome body and shading ring are aluminium alloy radome body and aluminium alloy shading ring.
Adopt technique scheme, the utility model has following advantage: owing to adopting radome and the shading ring of aluminium alloy integral type, its surfaces externally and internally is smooth evenly, radius of curvature increases, and radius of curvature uniformity, induction field is evenly distributed, has improved accuracy and the safety and reliability of voltage transformer, thereby reduced the impact of Current Mutual Inductance on other instruments.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of voltage transformer external shield as shown in Figure 1, comprises radome body 1 and the shading ring 2 that is arranged on radome body bottom, and described radome body and shading ring are complex as a whole.The top of shading ring is 3-10mm apart from the distance L of lowermost end.Radome body and shading ring are aluminium alloy radome body and aluminium alloy shading ring.
(traditional method is: by aluminium alloy plate one Edge Bend through compression casting technique for aluminium alloy radome body and shading ring, bending part is as shading ring, and then roll into radome, radome body and shading ring are integrated like this), disposal molding, again according to designing requirement, through machining center, it is carried out to fine finishining, then carry out surface treatment, make its entirety inside and outside smooth even, thereby ensure that Electric Field Distribution is even, improved accuracy and the safety and reliability of voltage transformer, thereby reduced the impact of Current Mutual Inductance on other instruments.
Claims (3)
1. a voltage transformer external shield, comprises radome body (1) and is arranged on the shading ring (2) of radome body bottom, it is characterized in that: described radome body and shading ring are complex as a whole.
2. voltage transformer external shield according to claim 1, is characterized in that: the top of shading ring is 3-10mm apart from the distance L of lowermost end.
3. voltage transformer external shield according to claim 1 and 2, is characterized in that: radome body and shading ring are aluminium alloy radome body and aluminium alloy shading ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320818780.1U CN203631293U (en) | 2013-12-13 | 2013-12-13 | Outer shielding case of voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320818780.1U CN203631293U (en) | 2013-12-13 | 2013-12-13 | Outer shielding case of voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203631293U true CN203631293U (en) | 2014-06-04 |
Family
ID=50817748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320818780.1U Expired - Fee Related CN203631293U (en) | 2013-12-13 | 2013-12-13 | Outer shielding case of voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203631293U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107578900A (en) * | 2017-09-27 | 2018-01-12 | 广东电网有限责任公司中山供电局 | A kind of hollow inductor shield device |
-
2013
- 2013-12-13 CN CN201320818780.1U patent/CN203631293U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107578900A (en) * | 2017-09-27 | 2018-01-12 | 广东电网有限责任公司中山供电局 | A kind of hollow inductor shield device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20171213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |