CN201859679U - High-inductance electromagnetic wire - Google Patents
High-inductance electromagnetic wire Download PDFInfo
- Publication number
- CN201859679U CN201859679U CN2010202883586U CN201020288358U CN201859679U CN 201859679 U CN201859679 U CN 201859679U CN 2010202883586 U CN2010202883586 U CN 2010202883586U CN 201020288358 U CN201020288358 U CN 201020288358U CN 201859679 U CN201859679 U CN 201859679U
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- electromagnetic wire
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- magnetic conduction
- insulating barrier
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Abstract
The utility model discloses a high-inductance electromagnetic wire. The electromagnetic wire adopts a single core single-strand structure or a single-core multi-strand structure; the innermost layer of the electromagnetic wire is a conductor; a layer outside the conductor is a magnetic conduction strip layer; and a layer outside the magnetic conduction strip layer is a glass tape insulating layer or a polyethylene insulating layer or an insulating paper layer or an insulating paint layer, and the like. When the electromagnetic wire is compared with the structure of the conventional electromagnetic wire, a layer of magnetic conduction strip is arranged between the conductor of the electromagnetic wire and the insulating layer, so that the inductance in a unit length of the electromagnetic wire is increased greatly; simultaneously, the surface action and eddy current loss of the cable are lowered greatly, and the electromagnetic wire has a small stress and a low external electromagnetic interference.
Description
Technical field
The utility model relates to a kind of electromagnetic wire, the big inductance electromagnetic wire that particularly a kind of inductance is bigger.
Background technology
A series of specific questions that special parameter requires and running produces at some power equipment that extensively adopts at present both at home and abroad, electric power cable.For example:
(1) at some are applied to the high-impedance transformer of special dimension at present, its short-circuit impedance percentage sometimes can be up to 40%～60%, often adjust at present by structure to transformer, winding adopts alternating expression or concentric type structure, to increase its short-circuit impedance percentage, but correspondingly because high leakage field must increase the stray loss of high-impedance transformer and fuel tank loss etc., caloric value is big.
(2) along with China's electrical network develops to ultra high voltage 750kV and 1000kV direction, high anti-being widely used in the electrical network in parallel, because high anti-inductance value in parallel is very big,, must cause the bulky of reactor if adopt hollow-core construction, floor space is big.Therefore, the in parallel high anti-height that mostly is band air gap core construction of China's employing at present resists.But because the deficiency of iron-core reactor self makes the height of hoping in parallel resist the noise in running very big, environment is unfriendly.
(3) along with the continuous propelling of Chinese Urbanization pace of construction, urban distribution network is constantly extended and is extended, requirement such as be subjected to that the city is planned, beautified, and it is the electric network composition pattern of assisting that urban power distribution network has been built based on cable outlet, overhead outlet.Urban power distribution network adopts cable in a large number, has significantly increased single-phase capacity current over the ground, and when system's generation single phase ground fault, because capacity current is very big, ground arc can not reliably extinguish.Therefore, at present urban power distribution network adopts neutral by arc extinction coil grounding more, but along with the dilatation in city, arc suppression coil and grounding transformer need constantly to change, and have increased system reform cost.
The utility model content
Existing electromagnetic wire kelvin effect is serious in order to solve, electromagnetic stress reaches technical problems such as external electromagnetic interference greatly, and the utility model provides the high-inductance power cable that a kind of kelvin effect is little, eddy current loss is little, electromagnetic stress is little and external electromagnetic interference is little.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: cable adopts single core sub-thread or single core multiply structure, and the electromagnetic wire innermost layer is a conductor, and the conductor skin is the magnetic conduction belt, and magnetic conduction belt skin is an insulating barrier.
In the above-mentioned big inductance electromagnetic wire, described insulating barrier is for being glass tape insulating barrier or polyethylene layer or insulating paper layer or insulation enamelled coating etc.
In the above-mentioned big inductance electromagnetic wire, described magnetic conduction belt is made of permeability magnetic material.
A kind of big inductance electromagnetic wire, electromagnetic wire adopts single core multiply structure, and the innermost layer of electromagnetic wire is a conductor, is formed by the stranded conductor coiling, conductor outer wrapping magnetic conduction belt, magnetic conduction belt outer wrapping glass tape insulating barrier or polyethylene layer or insulating paper layer or insulation enamelled coating etc.
In the above-mentioned big inductance electromagnetic wire, described magnetic conduction belt is made of permeability magnetic material.
Technique effect of the present utility model is: compare with traditional electrical magnet-wire structure, big inductance electromagnetic wire has increased one deck magnetic conducting band between conductor and insulating barrier, the magnetic conduction belt has the advantage of following two aspects: (1) adds one deck magnetic conducting band between conductor and insulating barrier, reduce the magnetic resistance in the flux closure path that produces by electric current in the conductor, helped improving the inductance value of unit length electromagnetic wire; (2) the magnetic field major part that the electric current that circulates in the conductor produces is passed through by the outer magnetic conduction belt of conductor, reduced the magnetic flux of conductor inside, reduced electromagnetic interference to outside power equipment, help reducing the kelvin effect in the conductor, reduce the electromagnetic stress of electromagnetic wire, helped protecting its insulation; (3) for the electromagnetic wire of big electric current, inner conductor adopts stranded conductor formation in parallel, can reduce eddy current effect, reduces line loss and the utilance that improves material.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is that the utility model is implemented 1 structural representation.
Fig. 2 is that the utility model is implemented 2 structural representation.
Embodiment
Fig. 1 is that the utility model is implemented 1 structural representation.Big inductance electromagnetic wire as shown in Figure 1 is single core sub-thread structure, and innermost layer is a conductor 1, and magnetic conduction belt 2 is wrapped in conductor 1, and magnetic conduction belt 2 outer wrapping insulating barrier 3, and insulating barrier 3 is glass tape insulating barrier or polyethylene layer or insulating paper layer or insulation enamelled coating etc.
Fig. 2 is that the utility model is implemented 2 structural representation.Big inductance electromagnetic wire as shown in Figure 2 is single core multiply structure, the conductor 1 of innermost layer for constituting by multiple conducting wires, gap between conductor 1 inside conductor can be air or insulation filler 4, magnetic conduction belt 2 is wrapped in conductor 1 and filler 4, magnetic conduction belt 2 coated outside insulating barrier 3, and insulating barrier 3 is glass tape insulating barrier or polyethylene layer or insulating paper layer or insulation enamelled coating.
Claims (6)
1. one kind big inductance electromagnetic wire, it is characterized in that: electromagnetic wire adopts single core sub-thread structure, and innermost layer is the sub-thread conductor, and the conductor skin is the magnetic conduction belt, and magnetic conduction belt skin is an insulating barrier.
2. big inductance electromagnetic wire according to claim 1 is characterized in that: described magnetic conduction belt is made of permeability magnetic material.
3. big inductance electromagnetic wire according to claim 1 is characterized in that: described insulating barrier is glass tape insulating barrier or polyethylene layer or insulating paper layer or insulation enamelled coating.
4. one kind big inductance electromagnetic wire, it is characterized in that: electromagnetic wire adopts single core multiply structure, and innermost layer is a conductor, and this conductor is made of the stranded conductor coiling, and the conductor skin is the magnetic conduction belt, and magnetic conduction belt skin is an insulating barrier.
5. big inductance electromagnetic wire according to claim 4 is characterized in that: described magnetic conduction belt is made of permeability magnetic material.
6. big inductance electromagnetic wire according to claim 4 is characterized in that: described insulating barrier is glass tape insulating barrier or polyethylene layer or insulating paper layer or insulation enamelled coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202883586U CN201859679U (en) | 2010-08-12 | 2010-08-12 | High-inductance electromagnetic wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202883586U CN201859679U (en) | 2010-08-12 | 2010-08-12 | High-inductance electromagnetic wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201859679U true CN201859679U (en) | 2011-06-08 |
Family
ID=44105480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202883586U Expired - Fee Related CN201859679U (en) | 2010-08-12 | 2010-08-12 | High-inductance electromagnetic wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201859679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114171293A (en) * | 2020-09-10 | 2022-03-11 | 北京小米移动软件有限公司 | Coil assembly and terminal |
-
2010
- 2010-08-12 CN CN2010202883586U patent/CN201859679U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114171293A (en) * | 2020-09-10 | 2022-03-11 | 北京小米移动软件有限公司 | Coil assembly and terminal |
| CN114171293B (en) * | 2020-09-10 | 2024-04-23 | 北京小米移动软件有限公司 | Coil assembly and terminal |
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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: STATE GRID HUNAN ELECTRIC POWER COMPANY HUNAN HUAD Effective date: 20131204 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Luo Longfu Inventor after: Xu Jiazhu Inventor after: Chen Yuehui Inventor after: Zhou Guandong Inventor after: Ma Fang Inventor before: Luo Longfu Inventor before: Xu Jiazhu |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LUO LONGFU XU JIAZHU TO: LUO LONGFU XU JIAZHU CHEN YUEHUI ZHOU GUANDONG MAFANG |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131204 Address after: Yuelu District City, Hunan province 410082 Changsha Lushan Road No. 2 Patentee after: Hunan University Patentee after: State Grid Hunan Electric Power Company Patentee after: Hunan Huada Electrician Hi-Tech Co., Ltd. Address before: Yuelu District City, Hunan province 410082 Changsha Lushan Road No. 2 Patentee before: Hunan University |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20140812 |
|
| EXPY | Termination of patent right or utility model |