CN201751964U - Insulated pressure balancing device of a current transformer - Google Patents
Insulated pressure balancing device of a current transformer Download PDFInfo
- Publication number
- CN201751964U CN201751964U CN2010202823157U CN201020282315U CN201751964U CN 201751964 U CN201751964 U CN 201751964U CN 2010202823157 U CN2010202823157 U CN 2010202823157U CN 201020282315 U CN201020282315 U CN 201020282315U CN 201751964 U CN201751964 U CN 201751964U
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- CN
- China
- Prior art keywords
- paper
- wire
- aluminum foil
- current transformer
- semicircle aluminum
- 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 relates to an insulated pressure balancing device of a current transformer, comprising a primary coil, wherein an insulated paper winds one end of a zero mask lead on the primary coil and another end of the zero mask lead extends outside and a layer of aluminum foil is arranged on the surface of the insulated paper and one end of the zero mask lead extending outside recurves along the reverse direction and in butt-joint with the aluminum foil and the insulated layer is winded on the surface of the aluminum foil thus the zero mask lead is closedly adhered on the aluminum foil. The aluminum foil replaces the prior metal strip, on one hand the insulated pressure balancing device conquers the defects of the metal strip that: cold joint, leak joint easily happens during the soldering process and meanwhile it is not necessary to grind the burr; on the other hand, because the aluminum foil is relative soft, it is not necessary to solder the aluminum foil and the aluminum foil is conveniently wrapped. Thus the production technology is simple and the cost is relative low.
Description
Technical field
The utility model relates to a kind of zero screen device, especially a kind of insulation pressure-equalizing device of current transformer.
Background technology
At present, the primary winding of existing current transformer is made up of two semicircle aluminum pipes, as shown in Figure 1, two semicircle aluminum pipe 10 outer carpenter's glues of smearing, and crimped paper twined semicircle aluminum pipe 10 respectively, the twill strap is cemented on the tube wall of semicircle aluminum pipe 10, after making insulating barrier respectively on the two semicircle aluminum pipes 10, two semicircle aluminum pipes 10 are closed up again, tighten around one deck with strap, strap twines cable paper outward, use metal tape 11 stacked packages again, along strip tape 12 of total length soldering, metal tape 11 is connected as a single entity reliably as zero screen at last, zero screen lead-in wire 13 is drawn.
This manufacture craft is comparatively complicated, cost is higher, metal tape is in the soldering process, problems such as rosin joint, leakage weldering take place easily, in addition, because the burr of metal tape itself is more, need be to the metal tape burr of polishing, otherwise the partial discharge quantity that causes product easily exceeds standard, and causes product to have potential safety hazards such as insulation breakdown, blast.
The utility model content
The purpose of this utility model is to provide that a kind of cost is low, the insulation pressure-equalizing device of the simple current transformer of production process.
For achieving the above object, the utility model has adopted following technical scheme: a kind of insulation pressure-equalizing device of current transformer, comprise primary winding, insulating paper is wrapped in an end of zero screen lead-in wire on the primary winding, the other end of zero screen lead-in wire is protruding, and the surface of insulating paper is provided with one deck aluminium foil, and the zero screen outwardly directed end reverse reflex of lead-in wire is also docked with aluminium foil, insulating barrier is twined on the surface of aluminium foil, and insulating barrier is close on the aluminium foil zero screen lead-in wire.
As shown from the above technical solution, the utility model adopts aluminium foil to substitute original metal tape and makes zero screen, has overcome the problem that metal tape rosin joint takes place in the soldering process easily, leaks weldering on the one hand, also need not the burr of polishing simultaneously; On the other hand,, need not welding, hold conveniently because aluminium foil is softer.As seen, manufacture craft of the present utility model is simple, and cost is lower.
Description of drawings
Fig. 1 is the prior art constructions schematic diagram;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the vertical view of B part among Fig. 2.
Embodiment
A kind of insulation pressure-equalizing device of current transformer, comprise primary winding, insulating paper 6 is wrapped in an end of zero screen lead-in wire 2 on the primary winding, the other end of zero screen lead-in wire 2 is protruding, the surface of insulating paper 6 is provided with one deck aluminium foil 3, and zero screen lead-in wire 2 outwardly directed end reverse reflex also docks with aluminium foil 3, make aluminium foil 3 become zero and shield, insulating barrier is twined on the surface of aluminium foil 3, and insulating barrier is close on the aluminium foil 3 zero screen lead-in wire 2.Described insulating barrier comprises paper tape 4 and strap 5, and paper tape 4 and strap 5 are wrapped on the zero screen lead-in wire 2, shown in Fig. 2,3 successively.Because the material of aluminium foil 3 is softer, need not it is welded on the aluminum pipe, only need hold it and get final product; Simultaneously, aluminium foil 3 also need not the burr of polishing, and cost is lower, and is easy to process, and manufacture craft is simple.
Shown in Fig. 2,3,4, described primary winding is made up of two relative semicircle aluminum pipes 1, offer a plurality of connecting holes 8 that are used to connect lead on the two ends of described semicircle aluminum pipe 1 respectively, in the utility model, offer 4 connecting holes 8 on the two ends of semicircle aluminum pipe 1 respectively.Described insulating paper 6 comprises crimped paper and cable paper, and crimped paper is twined on the surface of two semicircle aluminum pipes 1 respectively, and described crimped paper is provided with 4 layers.Separate with cardboard 9 between two semicircle aluminum pipes 1, cardboard 9 is positioned at the two ends of two semicircle aluminum pipes 1, and cable paper is wrapped in the surface of crimped paper, and cable paper is wound up as a pipe with two semicircle aluminum pipes 1.Zero screen lead-in wire 2 is used for semicircle aluminum pipe 1 and aluminium foil 3 are coupled together, and plays the effect of reliable connection, uniform electric field distribution.
Shown in Fig. 2,3,4, one end of described zero screen lead-in wire 2 is welded on the aluminium sheet 7, aluminium sheet 7 is attached on the pipe shaft of one of them semicircle aluminum pipe 1, zero screen lead-in wire 2 is between aluminium sheet 7 and semicircle aluminum pipe 1, the end that crimped paper will be welded with zero screen lead-in wire 2 of aluminium sheet 7 is wrapped on the semicircle aluminum pipe 1, and the other end of zero screen lead-in wire 2 is protruding.Aluminium sheet 7 is used to increase zero screen lead-in wire 2 and as the contact area between the aluminium foil 3 of zero screen, guarantees that annexation is more reliable.
Claims (6)
1. the insulation pressure-equalizing device of a current transformer, it is characterized in that: comprise primary winding, insulating paper (6) is wrapped in an end of zero screen lead-in wire (2) on the primary winding, the other end of zero screen lead-in wire (2) is protruding, the surface of insulating paper (6) is provided with one deck aluminium foil (3), zero screen lead-in wire (2) outwardly directed end reverse reflex also dock with aluminium foil (3), and insulating barrier is twined on the surface of aluminium foil (3), insulating barrier make zero screen go between (2) be close on the aluminium foil (3).
2. the insulation pressure-equalizing device of current transformer according to claim 1, it is characterized in that: described primary winding is made up of two relative semicircle aluminum pipes (1), described insulating paper (6) comprises crimped paper and cable paper, crimped paper is twined on the surface of two semicircle aluminum pipes (1) respectively, separate with cardboard (9) between two semicircle aluminum pipes (1), cardboard (9) is positioned at the two ends of two semicircle aluminum pipes (1), cable paper is wrapped in the surface of crimped paper, and cable paper is wound up as a pipe with two semicircle aluminum pipes (1).
3. the insulation pressure-equalizing device of current transformer according to claim 1 and 2, it is characterized in that: an end of described zero screen lead-in wire (2) is welded on the aluminium sheet (7), aluminium sheet (7) is attached on the pipe shaft of one of them semicircle aluminum pipe (1), zero screen lead-in wire (2) is positioned between aluminium sheet (7) and the semicircle aluminum pipe (1), the end that crimped paper will be welded with zero screen lead-in wire (2) of aluminium sheet (7) is wrapped on the semicircle aluminum pipe (1), and the other end of zero screen lead-in wire (2) is protruding.
4. the insulation pressure-equalizing device of current transformer according to claim 1 and 2, it is characterized in that: offer a plurality of connecting holes (8) that are used to connect lead on the two ends of described semicircle aluminum pipe (1) respectively, described insulating barrier comprises paper tape (4) and strap (5), and paper tape (4) and strap (5) are wrapped on the zero screen lead-in wire (2) successively.
5. the insulation pressure-equalizing device of current transformer according to claim 2, it is characterized in that: described crimped paper is provided with 4 layers.
6. the insulation pressure-equalizing device of current transformer according to claim 4 is characterized in that: offer 4 connecting holes (8) on the two ends of described semicircle aluminum pipe (1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202823157U CN201751964U (en) | 2010-07-29 | 2010-07-29 | Insulated pressure balancing device of a current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202823157U CN201751964U (en) | 2010-07-29 | 2010-07-29 | Insulated pressure balancing device of a current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201751964U true CN201751964U (en) | 2011-02-23 |
Family
ID=43602374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202823157U Expired - Fee Related CN201751964U (en) | 2010-07-29 | 2010-07-29 | Insulated pressure balancing device of a current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201751964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456478A (en) * | 2013-09-13 | 2013-12-18 | 中国能源建设集团有限公司湖南电力电瓷电器厂 | Insulation wrapping method for current transformer and current transformer |
-
2010
- 2010-07-29 CN CN2010202823157U patent/CN201751964U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456478A (en) * | 2013-09-13 | 2013-12-18 | 中国能源建设集团有限公司湖南电力电瓷电器厂 | Insulation wrapping method for current transformer and current transformer |
| CN103456478B (en) * | 2013-09-13 | 2016-05-25 | 中国能源建设集团有限公司湖南电力电瓷电器厂 | Current transformer insulating wrapping method and current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ANHUI JIYUAN ELECTRIC NETWORK TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ANHUI HONGDING INSTRUMENT TRANSFORMER CO., LTD. Effective date: 20110318 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 230088 NO. 1696, XIYOU ROAD, NEW AND HIGH TECHNOLOGY AREA, HEFEI CITY, ANHUI PROVINCE TO: 230088 KEXUE AVENUE, NO. 669, CHANGJIANG WEST ROAD, HEFEI CITY, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110318 Address after: 230088 science Road, No. 669 Changjiang West Road, Anhui, Hefei, China Patentee after: Anhui Jiyuan Power System Technology Co., Ltd. Address before: 230088 Anhui city of Hefei province high tech Zone Xiyou Road No. 1696 Patentee before: Anhui Hongding Mutual Inductor Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110223 Termination date: 20170729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |