CN203521145U - Current transformer - Google Patents
Current transformer Download PDFInfo
- Publication number
- CN203521145U CN203521145U CN201320582634.3U CN201320582634U CN203521145U CN 203521145 U CN203521145 U CN 203521145U CN 201320582634 U CN201320582634 U CN 201320582634U CN 203521145 U CN203521145 U CN 203521145U
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- coil
- gauze screen
- current transformer
- base plate
- hole
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Abstract
The utility model discloses a current transformer (1) which comprises a coil (11) and a shielding net (12).The shielding net (12) is sleeved with the coil (11). An insulating connecting layer (13) is arranged between the coil (11) and the shielding net (12). The coil (11) and the shielding net (12) are connected together through the insulating connecting layer (13) and form a coil and shielding net assembly. Installing parts (15) are arranged at the two ends of the shielding net (12) respectively in an extending mode. A matching through hole (14) is formed in the inner side of the shielding net (12), wherein the matching through hole (14) is communicated with the two ends of the shielding net (12) and used for being matched with an external conductor (2). According to the current transformer, epoxy resin does not need to be poured, the local discharge phenomenon can be effectively avoided, the structural size is reduced, cost is lowered, the weight is reduced, as a result, the structure is simpler, and installation is more flexible.
Description
Technical field
The utility model relates to electronic component technology field, relates in particular to a kind of GIS Current Transformer simple in structure.
Background technology
10-35kV Cubicle Gas-Insulated Switchgear is equipped with current transformer conventionally, for the metering of electric current, measures or protection use.The outside of existing current transformer is used epoxy resin to pour into a mould conventionally, its complex structure, and volume is larger, and manufacturing cost is high.And in manufacturing process, do not adopt effective electric field all to press shielding measure, easily cause partial discharge phenomenon, affect the normal use of current transformer, to system, operation causes larger hidden danger.
Utility model content
Goal of the invention of the present utility model is to overcome defect of the prior art, provide a kind of simple in structure, volume is little, without partial discharge, cost current transformer low, flexible for installation.
Technical solutions of the utility model provide a kind of current transformer, comprise coil and gauze screen, described coil is enclosed within on described gauze screen, between described coil and described gauze screen, be provided with insulation connecting layer, described coil and described gauze screen link together by described insulation connecting layer, and form coil gauze screen assembly, and the two ends of described gauze screen are extended with respectively installation portion, the inner side of described gauze screen is formed with the two ends that connect described gauze screen, for the cooperation through hole coordinating with external conductor.
Further, described coil is making toroidal coil, and described gauze screen is annular gauze screen, and described annular gauze screen and described making toroidal coil coaxially arrange.
Further, described cooperation through hole is circular port.
Further, described insulation connecting layer is glue layer.
Further, described installation portion is mounting panel, is provided with installation through hole on described mounting panel.
Further, described installation portion comprises two described mounting panels, and two described mounting panels are relatively arranged on the end of described gauze screen, is provided with described installation through hole on every described mounting panel.
Further, described current transformer also comprises base plate, two are arranged on the first mounting bracket on described base plate and two and are arranged on described base plate, for the second mounting bracket of external conductor is installed, described coil gauze screen assembly is arranged on described base plate by two described the first mounting brackets.
Further, two described the first mounting brackets are distinguished support and connection at the two ends of described gauze screen.
Further, plural described coil gauze screen assembly is installed on described base plate, described in each, coil shielding assembly is arranged on described base plate by two described the first mounting brackets.
Adopt technique scheme, there is following beneficial effect:
This current transformer, by one deck gauze screen is set, is enclosed within coil on gauze screen, and by insulation connecting layer, coil and gauze screen is linked together, and forms a coil gauze screen assembly.By gauze screen is set, can balanced coil and external conductor between electric field, then at coil and gauze screen, one deck insulation connecting layer is set, when above-mentioned coil and gauze screen are connected to form to a coil gauze screen assembly, also prevent by electric field breakdown.It is without casting epoxy resin externally, and by gauze screen, coil and external conductor is isolated, and has avoided the generation of partial discharge phenomenon, has reduced structural volume, has reduced cost.
Because its parts are few, and without casting epoxy resin, it is simple in structure, lightweight; By installation portion is set, can as required above-mentioned current transformer be hung in GIS switch cubicle, also can by base plate by above-mentioned current transformer paperback in GIS switch cubicle, it is flexible for installation.
Accompanying drawing explanation
The structural representation of a kind of current transformer the first embodiment that Fig. 1 provides for the utility model;
The structural representation of a kind of current transformer the second embodiment that Fig. 2 provides for the utility model.
The Reference numeral table of comparisons:
1-current transformer; 11-coil; 12-gauze screen;
13-insulation connecting layer; 14-coordinates through hole; 15-installation portion;
151-mounting panel; 152-installing hole; 2-external conductor;
3-base plate; 4-the first mounting bracket; 5-the second mounting bracket.
Embodiment
Below in conjunction with accompanying drawing, further illustrate embodiment of the present utility model.
As shown in Figure 1, a kind of current transformer 1 that the utility model provides, comprises coil 11 and gauze screen 12.Above-mentioned coil cover 11 is on gauze screen 12, between coil 11 and gauze screen 12, be provided with insulation connecting layer 13, this coil 11 links together by insulation connecting layer 13 with gauze screen 12, and form coil gauze screen assembly, the two ends of this gauze screen 12 are extended with respectively installation portion 15, the inner side of gauze screen 12 is formed with the two ends that connect gauze screen 12, for the cooperation through hole 14 coordinating with external conductor.
This current transformer 1 is arranged in GIS switch cubicle, for the metering of electric current, measures or protection use.This current transformer 1 comprise coil 11, gauze screen 12 and be connected to coil 11 and gauze screen 12 between insulation connecting layer 13.Above-mentioned coil 11 can be secondary coil.
Above-mentioned gauze screen 12 is formed by copper mesh or aluminium net folding, and the shape of its shape and coil 11 matches, and its outside links together by insulation connecting layer 13 and coil 11, and its inner side is formed with the cooperation through hole 14 matching for the external conductor 2 with shown in Fig. 2.This cooperation through hole 14 is formed by gauze screen 12, and connects gauze screen 12 two ends along its length, is generally upper and lower two ends.In use, by external conductor 2(busbar) through this, coordinate through hole 14 and coil 11 that electromagnetic induction occurs, realize the output of coil 11 signals.These gauze screen 12 two ends have along its length extended to form respectively installation portion 15, and this installation portion 15 can be one-body molded with gauze screen 12.
This gauze screen 12, in use, is kept apart external conductor 2 and coil 11, with balanced electric field, provides and all presses shielding measure, prevents electric leakage.And by insulation connecting layer 13 being set between coil 11 and gauze screen 12, can avoid breakdown, affect the use of coil 11.By insulation connecting layer 13, coil 11 and gauze screen 12 are linked together simultaneously, form coil gauze screen assembly, during use, the installation portion of one end 15 is suspended on to desired location in GIS switch cubicle, conveniently install and use.
The current transformer 1 that the utility model provides, between coil 11 and external conductor 2, one deck gauze screen 12 is set, so that being provided, electric field all presses shielding measure, prevent the generation of partial discharge, without casting epoxy resin externally again, reduced structural volume, reduced cost, parts are few, simple in structure.
Preferably, as shown in Figure 1, above-mentioned coil 11 is making toroidal coil, and gauze screen 12 is annular gauze screen, and this annular gauze screen and making toroidal coil coaxially arrange.That is, this coil 11 is making toroidal coil, and this gauze screen 12 is the annular gauze screen being become by copper mesh or aluminium net volume, coordinates through hole 14 to be formed in winding process by copper mesh or aluminium net volume.This annular gauze screen coaxially arranges in making toroidal coil, can improve shield effectiveness, and is beneficial to assembling.
Preferably, as shown in Figure 1-2, above-mentioned cooperation through hole 14 is circular port.This circular port is formed in winding process by copper mesh or aluminium net volume, is positioned at the inner side of annular gauze screen, and connects the two ends up and down of gauze screen 12.External conductor 2(busbar) be correspondingly cylindrical, in use, by external conductor 2(busbar) through this circular port, and arrange with annular gauze screen same axis.
Preferably, above-mentioned insulation connecting layer 13 is glue layer.This glue layer consists of bi-component glue, for coil 11 and gauze screen 12 are bonded together, forms coil gauze screen assembly.
For convenient, install, above-mentioned installation portion 15 is designed to mounting panel 151, on mounting panel 151, be provided with through hole 152 is installed.In use, suspender, through through hole 152 is installed, can be suspended on to desired location by above-mentioned current transformer 1, fitting operation is simple and convenient.
In order to improve installation effect, above-mentioned installation portion 15 comprises that 151, two mounting panels 151 of two mounting panels are relatively arranged on the end of gauze screen 12, is provided with through hole 152 is installed on every mounting panel 151.Two mounting panels 151 are oppositely arranged, and at every mounting panel 151, at least one installation through hole 152 are set, through hole 152 is installed in both sides and hang, can improve the stability of installation.
As shown in Figure 2, the current transformer 1 that the utility model provides also has another kind of mounting means, this current transformer 1 also comprises base plate 3, two are arranged on the first mounting bracket 4 on base plate 3 and two and are arranged on base plate 3, for the second mounting bracket 5 of external conductor 2 is installed, coil gauze screen assembly is arranged on base plate 3 by two the first mounting brackets 4.
That is, can be by 1 square of current transformer in GIS switch cubicle.First coil gauze screen assembly is arranged on base plate 3 by two the first mounting brackets 4, again base plate 3 is placed in GIS switch cubicle, conductor 2(busbar externally) after the cooperation through hole 14 through gauze screen 12 inner sides in coil gauze screen assembly, by the second mounting bracket 5 by external conductor 2(busbar) be fixedly connected with base plate 3.So arrange, can be as required by 1 square of current transformer in GIS switch cubicle.
As shown in Figure 2, above-mentioned two the first mounting brackets 4 difference support and connection are at the two ends of gauze screen 12.The end of gauze screen 12 stretches out in coil 11, between the end of gauze screen 12 and overhang, be formed with thinner neck, this neck is between installation portion 15 and the main body of gauze screen 12, two the first mounting brackets 4 are distinguished to support and connection on the neck at gauze screen 12 two ends, can conveniently install, improve the stability connecting simultaneously.
As shown in Figure 2, plural coil gauze screen assembly is installed on above-mentioned base plate 3, each coil shielding assembly is arranged on described base plate by two the first mounting brackets 4.As required, two or more coil gauze screen assemblys can be arranged on above-mentioned base plate 3, then base plate 3 is positioned in GIS switch cubicle.
Above-mentioned the first mounting bracket 4 can also be made to an integral body with gauze screen 12, to improve the intensity of structure.Between above-mentioned each technical scheme, can be used in combination as required, to arrive required effect.
Thus, the current transformer that the utility model provides, without casting epoxy resin, can avoid the generation of partial discharge phenomenon, has reduced structural volume, has reduced cost, has alleviated weight, makes structure simpler; Can be as required, by through hole is installed, above-mentioned current transformer is hung in GIS switch cubicle, also can be as required, by base plate by above-mentioned current transformer paperback in GIS switch cubicle, it is flexible for installation.
Above-described is only principle of the present utility model and preferred embodiment.It should be pointed out that for the person of ordinary skill of the art, on the basis of the utility model principle, can also make some other modification, also should be considered as protection range of the present utility model.
Claims (9)
1. a current transformer (1), is characterized in that, comprises coil (11) and gauze screen (12),
It is upper that described coil (11) is enclosed within described gauze screen (12),
Between described coil (11) and described gauze screen (12), be provided with insulation connecting layer (13),
Described coil (11) links together by described insulation connecting layer (13) with described gauze screen (12), and forms coil gauze screen assembly,
The two ends of described gauze screen (12) are extended with respectively installation portion (15), and the inner side of described gauze screen (12) is formed with the two ends that connect described gauze screen (12), for the cooperation through hole (14) coordinating with external conductor (2).
2. a kind of current transformer according to claim 1 (1), is characterized in that, described coil (11) is making toroidal coil, and described gauze screen (12) is annular gauze screen, and described annular gauze screen and described making toroidal coil coaxially arrange.
3. a kind of current transformer according to claim 1 (1), is characterized in that, described cooperation through hole (14) is circular port.
4. a kind of current transformer according to claim 1 (1), is characterized in that, described insulation connecting layer (13) is glue layer.
5. a kind of current transformer according to claim 1 (1), is characterized in that, described installation portion (15) is mounting panel (151), is provided with through hole (152) is installed on described mounting panel (151).
6. a kind of current transformer according to claim 5 (1), it is characterized in that, described installation portion (15) comprises two described mounting panels (151), two described mounting panels (151) are relatively arranged on the end of described gauze screen (12), are provided with described installation through hole (152) on every described mounting panel (151).
7. according to a kind of current transformer (1) described in claim 1 or 2 any one claims, it is characterized in that, described current transformer (1) also comprises base plate (3), two are arranged on the first mounting bracket (4) on described base plate (3) and two and are arranged on described base plate (3), be used for installing second mounting bracket (5) of external conductor (2)
Described coil gauze screen assembly is arranged on described base plate (3) by two described the first mounting brackets (4).
8. a kind of current transformer according to claim 7 (1), is characterized in that, the support and connection of two described the first mounting brackets (4) difference are at the two ends of described gauze screen (12).
9. a kind of current transformer according to claim 8 (1), it is characterized in that, plural described coil gauze screen assembly is installed on described base plate (3), and described in each, coil shielding assembly is arranged on described base plate (3) by two described the first mounting brackets (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582634.3U CN203521145U (en) | 2013-09-18 | 2013-09-18 | Current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582634.3U CN203521145U (en) | 2013-09-18 | 2013-09-18 | Current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203521145U true CN203521145U (en) | 2014-04-02 |
Family
ID=50380036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320582634.3U Expired - Lifetime CN203521145U (en) | 2013-09-18 | 2013-09-18 | Current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203521145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653328A (en) * | 2016-12-16 | 2017-05-10 | 广东四会互感器厂有限公司 | Primary terminal voltage-balancing structure of current transformer |
-
2013
- 2013-09-18 CN CN201320582634.3U patent/CN203521145U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653328A (en) * | 2016-12-16 | 2017-05-10 | 广东四会互感器厂有限公司 | Primary terminal voltage-balancing structure of current transformer |
| CN106653328B (en) * | 2016-12-16 | 2017-12-12 | 广东四会互感器厂有限公司 | Equal laminated structure of terminal of current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180601 Address after: Baden, Switzerland Patentee after: ABB Switzerland Co.,Ltd. Address before: Zurich Patentee before: ABB TECHNOLOGY Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
|
| CX01 | Expiry of patent term |