CN203406126U - Hollow coil provided with closed magnetic circuit - Google Patents
Hollow coil provided with closed magnetic circuit Download PDFInfo
- Publication number
- CN203406126U CN203406126U CN201320485724.0U CN201320485724U CN203406126U CN 203406126 U CN203406126 U CN 203406126U CN 201320485724 U CN201320485724 U CN 201320485724U CN 203406126 U CN203406126 U CN 203406126U
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- China
- Prior art keywords
- printed
- coil
- hollow
- magnetic circuit
- closed magnetic
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- Expired - Fee Related
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Abstract
A hollow coil provided with a closed magnetic circuit comprises printed coil boards, a printed connecting board and a shielding shell. The hollow coil provided with the closed magnetic circuit is characterized in that the hollow coil is further provided with an annular core with air gaps formed in the periphery evenly in a cutting mode, the annular core is placed on the printed connecting board, each printed coil board is vertically placed in a corresponding air gap, printed coils are connected through printed connectors on the printed connecting board, a terminal is led out, and the periphery of the terminal is wrapped with the shielding shell. According to the hollow coil provided with the closed magnetic circuit, due to the fact that the annular core serving as the closed magnetic circuit is embedded among the hollow printed coil boards, the magnetic flux passing through the hollow printed coil boards is increased obviously, and then signal intensity of hollow coils is improved, meanwhile, outside flux leakage interference can be effectively inhibited; due to the fact that the air gaps are formed in the iron core, magnetic saturation is avoided; bandwidth is large, the dynamic measurement range is wide, the signal to noise ratio is high, stability is good, interference resistance is good, one coil can be used for measurement as well as protection, the size is small, the weight is low, and practicality is high.
Description
Technical field
The utility model relates to a kind of electric power mutual-inductor parts, particularly a kind of air core coil with closed magnetic circuit.
Background technology
At present, the measure portion of electronic current mutual inductor, protection part are generally to adopt respectively low power current transformer, two coils of air core coil.The advantage such as wherein low power current transformer has that signal to noise ratio is high, good stability, antijamming capability are strong, but still there is the narrow and magnetic saturation problem of frequency band; The secondary winding of air core coil on non magnetic skeleton, without ferroic material, have measure bandwidth, range of dynamic measurement is large, and there is not magnetic saturation problem, but very high to coiling technological requirement, temperature influence and electromagnetic interference are larger, and output signal is little, signal to noise ratio is low.If measure portion and a low power current transformer of the common employing of protection part, due to the impact of its magnetic saturation problem, just need to increase core section long-pending, volume is large, and cost is high.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned weak point, and provide that a kind of signal to noise ratio is high, good stability, antijamming capability are strong, bandwidth, range of dynamic measurement are large, do not have the air core coil with closed magnetic circuit of magnetic saturation problem.
The purpose of this utility model is achieved in that a kind of air core coil with closed magnetic circuit, comprise track girth sheets, printing connecting line plate, screening can, it is characterized in that it is also provided with the annular core that periphery decile cuts out air gap, annular core is placed on printing connecting line plate, in per pass air gap, vertically place respectively a slice track girth sheets, track girth sheets bottom is connected with printing connecting line plate, by the printing connecting line on printing connecting line plate, each printed coil is connected, and draw terminals, the coated screening can in neighboring.
The utility model is owing to adopting above design, between hollow track girth sheets, embed the annular core that forms closed magnetic circuit, cause the magnetic flux by hollow track girth sheets significantly to increase, thereby increased the signal strength signal intensity of air core coil, can effectively suppress extraneous leakage field disturbs simultaneously, owing to there being air gap in iron core, there is hardly magnetic saturation problem.Both air core coil bandwidth, advantage that range of dynamic measurement is large had been kept; the feature such as simultaneously also have that low power current transformer signal to noise ratio is high, good stability, antijamming capability are strong, has realized the function of only measuring simultaneously and protecting with a coil, and volume is little; lightweight, practical.
Accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is printed coil plate structure schematic diagram;
Fig. 3 is printing connecting line plate structure schematic diagram;
Fig. 4 is embodiment radial cross-section;
Fig. 5 is embodiment side sectional view.
Embodiment
Now illustrated embodiment is made detailed description to the utility model by reference to the accompanying drawings.
As shown in the figure, a kind of air core coil with closed magnetic circuit, comprise track girth sheets 1, printing connecting line plate 2, screening can 3, the annular core 5 that periphery decile cuts out four road air gaps 4 is placed on printing connecting line plate 2, in per pass air gap 4, vertically place respectively a slice track girth sheets 1, by being fixedly connected with in corresponding installing hole on the projection insertion printing connecting line plate 2 of track girth sheets 1 bottom, multiturn coil bar is set in the one side of track girth sheets 1, another side is laid output intercell connector, coil intercell connector is set above printing connecting line plate 2, on bottom surface, lay output intercell connector, by the printing connecting line on printing connecting line plate 2, each printed coil is connected, and draw terminals, the coated aluminium alloy screening can 3 in neighboring.
Claims (1)
1. the air core coil with closed magnetic circuit, comprise track girth sheets (1), printing connecting line plate (2), screening can (3), it is characterized in that the annular core (5) that it is also provided with periphery decile and cuts out air gap (4), annular core (5) is placed on printing connecting line plate (2), in per pass air gap (4), vertically place respectively a slice track girth sheets (1), track girth sheets (1) bottom is connected with printing connecting line plate (2), by the printing connecting line on printing connecting line plate (2), each printed coil is connected, and draw terminals, the coated screening can in neighboring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485724.0U CN203406126U (en) | 2013-08-09 | 2013-08-09 | Hollow coil provided with closed magnetic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485724.0U CN203406126U (en) | 2013-08-09 | 2013-08-09 | Hollow coil provided with closed magnetic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203406126U true CN203406126U (en) | 2014-01-22 |
Family
ID=49942050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320485724.0U Expired - Fee Related CN203406126U (en) | 2013-08-09 | 2013-08-09 | Hollow coil provided with closed magnetic circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203406126U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400680A (en) * | 2013-08-09 | 2013-11-20 | 衡阳一互电气有限公司 | Hollow coil with closed magnetic circuit |
| CN112614666A (en) * | 2020-12-07 | 2021-04-06 | 山东航天电子技术研究所 | Magnetic core structure and manufacturing method of large-size spliced transformer |
-
2013
- 2013-08-09 CN CN201320485724.0U patent/CN203406126U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400680A (en) * | 2013-08-09 | 2013-11-20 | 衡阳一互电气有限公司 | Hollow coil with closed magnetic circuit |
| CN112614666A (en) * | 2020-12-07 | 2021-04-06 | 山东航天电子技术研究所 | Magnetic core structure and manufacturing method of large-size spliced transformer |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20180809 |