CN203690084U - Miniature mutual inductor - Google Patents
Miniature mutual inductor Download PDFInfo
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- CN203690084U CN203690084U CN201320886754.2U CN201320886754U CN203690084U CN 203690084 U CN203690084 U CN 203690084U CN 201320886754 U CN201320886754 U CN 201320886754U CN 203690084 U CN203690084 U CN 203690084U
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- iron
- layer
- core layer
- amorphous alloy
- mutual inductor
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Abstract
The utility model discloses a miniature mutual inductor which comprises a housing and a circular iron core ring. The housing is provided with a cross-core aperture sleeve which is sleeved by the circular iron core ring. The circular iron core ring is formed by the recombination of an iron-based nanocrystalline-alloy magnetic core layer, an iron-based amorphous-alloy magnetic core layer, and a cobalt-based amorphous-alloy layer. The lower half part of the circular iron core ring is provided with a coil, and two ends of the coil are respectively connected with two leading-out wires extending out of the housing. The mutual inductor provided by the utility model is small in size, is clear in structure, is reasonable in material selection, is high in magnetic conductivity, and is good in temperature characteristic. An iron core is formed by the stacking of various types of materials, and is a soft magnet with low power consumption and anti-electromagnetic interference. The mutual inductor can iron out the defects of a conventional product, improves the accuracy of measurement, and can monitor the stability and reliability of a system.
Description
Technical field
The utility model relates to a kind of electronic component, especially relates to a kind of micro mutual inductor.
Background technology
Electric power system is for electric energy transmitting; often adopt alternating voltage, large current circuit that electric power is sent to user; cannot directly measure by instrument; the effect of instrument transformer is exactly that alternating voltage and large electric current are down to the numerical value that can directly measure by instrument in proportion, simultaneously for relaying protection and automatics provide power supply.Instrument transformer claims again instrument transformer, is the general designation of current transformer and voltage transformer.It is not only for measuring or standardization and the miniaturization of protection system and automatic control equipment, and it can also isolated high voltage system simultaneously, guarantees the safety of the person and equipment.
The performance of instrument transformer, as indexs such as iron core magnetic permeability, loss, temperature characterisitics, directly has influence on the accuracy of power system measuring, metering and automatically controls the reliability of monitoring equipment.
Summary of the invention
The utility model object is to provide a kind of micro mutual inductor, not ideal enough to solve existing transformer iron core magnetic permeability, loss, temperature characterisitic, affects the technical problems such as power measurement, metering accuracy and monitoring equipment reliability.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of micro mutual inductor, comprises shell, circular iron core ring; Described shell is provided with punching borehole jack, and center hole puts and is arranged with circular iron core ring; Described circular iron core ring is composited by iron-base nanometer crystal alloy core layer, Fe-based amorphous alloy core layer, cobalt base amorphous alloy layer, what be wherein positioned at circular iron core ring innermost layer is iron-base nanometer crystal alloy core layer, iron-base nanometer crystal alloy core layer is arranged with Fe-based amorphous alloy core layer outward, and Fe-based amorphous alloy core layer is arranged with cobalt base amorphous alloy layer outward; Described circular iron core ring Lower Half is wound with one group of coil, and these coil two ends are connected with two lead-out wires that stretch out shell respectively.
As preferably, between described circular iron core ring and the space of shell, be filled with epoxy adhesive layer.
As preferably, described iron-base nanometer crystal alloy core layer, Fe-based amorphous alloy core layer, cobalt base amorphous alloy layer thickness are than being 3:1:1.
As preferably, described Fe-based amorphous alloy core layer is the loop configuration being turned to by Fe-based amorphous nanometer band.
As preferably, described cobalt base amorphous alloy layer is the loop configuration being turned to by cobalt base amorphous alloy band.
As preferably, described iron-base nanometer crystal alloy core layer is the loop configuration being turned to by iron-base nanometer crystal alloy band.
The utlity model has that volume is little, structure is clearly demarcated, selection is reasonable, magnetic permeability is high, good temp characteristic, high reliability.Iron core is formed by stacking by various material, is the soft magnetic bodies of a kind of low-power consumption, anti-electromagnetic interference, and Fe-based amorphous alloy core layer magnetic is strong, and iron loss is extremely low.Iron-base nanometer crystal alloy core layer has high initial magnetic permeability and saturation flux density, and magnetic permeability is very little with magnetic flux density and variations in temperature, and mechanical strength is high, without the flexible phenomenon of magnetic hysteresis.Cobalt base amorphous alloy layer magnetic permeability is high.The utility model micro mutual inductor can finely improve the deficiency of existing product, improves the accuracy of measurement and stability and the reliability of monitoring system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the cutaway view of Fig. 1;
Fig. 3 is use view of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model, and Fig. 2 is the cutaway view of Fig. 1, and Fig. 3 is use view of the present utility model.
As seen from the figure, this micro mutual inductor, comprises shell 1, circular iron core ring 3 etc.Its shell 1 is provided with punching borehole jack 2, is arranged with circular iron core ring 3 on punching borehole jack 2.Circular iron core ring 3 is composited by iron-base nanometer crystal alloy core layer 4, Fe-based amorphous alloy core layer 5, cobalt base amorphous alloy layer 6, what be wherein positioned at circular iron core ring 3 innermost layers is iron-base nanometer crystal alloy core layer 4, the outer Fe-based amorphous alloy core layer 5 that is arranged with of iron-base nanometer crystal alloy core layer 4, Fe-based amorphous alloy core layer 5 is outer is arranged with cobalt base amorphous alloy layer 6, and iron-base nanometer crystal alloy core layer 4, Fe-based amorphous alloy core layer 5, cobalt base amorphous alloy layer 6 Thickness Ratio are 3:1:1.
Circular iron core ring 3 Lower Halves are wound with one group of coil 7, and 7 liang of ends of this coil are connected with two lead-out wires 8 that stretch out shell 1 respectively.Between the space of circular iron core ring 3 and shell 1, be filled with epoxy adhesive layer 9.
Fe-based amorphous alloy core layer 5 is the loop configuration that turned to by the Fe-based amorphous band of thickness 25-30um.Turn to after annular, annular workpieces can be carried out under inert gas shielding atmosphere to two sections of heating and heat preservation, first paragraph programming rate is 6-9 ℃/min, intensification 50-65min, insulation 30-60min, between soak, apply longitudinal magnetic field, magnetic field intensity 0.8-16KA/m, magnetic direction is along annular circumferential direction, second segment programming rate is 0.5-3.5 ℃/min, intensification 30-80min, insulation 60-120min, before reaching crystallization temperature, Fe-based amorphous nano material applies transverse magnetic field, magnetic field intensity is 16-32KA/m, and remain to heat treatment and finish, after finishing dealing with, obtain the Fe-based amorphous alloy core layer of better performances.
Cobalt base amorphous alloy layer 6 is the loop configuration that turned to by cobalt base amorphous alloy band.
The loop configuration that iron-base nanometer crystal alloy core layer 4 is turned to by iron-base nanometer crystal alloy band.Iron-base nanometer crystal alloy (Nanocrystalline alloy) is to be main by ferro element, a kind of amorphous material that the alloy that adds a small amount of Nb, Cu, Si, B element to form forms through fast solidification technology, this amorphous material after heat treatment can obtain the crystallite that diameter is 10-20 nm, disperse is distributed on amorphous matrix, is called as crystallite, nanocrystalline material or nanocrystalline material.
When this micro mutual inductor uses, it is a winding that single or many buses 10 are passed through to center hole 2(bus 10), high voltage in bus 10, large electric current can be in the interior generation of circular iron core ring 3 magnetic field, this magnetic field makes the interior generation induced current of coil 7 (coil 7 is secondary winding), and lead-out wire 8 is connected with the load of secondary side and formed closed-loop path.Can recently determine its no-load voltage ratio through the number of turn of center hole 2 and the number of turn of coil 7 according to bus 10, to select suitable output voltage, electric current.Circular iron core ring is formed by stacking by various material, and Fe-based amorphous alloy core layer magnetic is strong, and iron loss is extremely low.Iron-base nanometer crystal alloy core layer has high initial magnetic permeability and saturation flux density, and magnetic permeability is very little with magnetic flux density and variations in temperature, and mechanical strength is high, without the flexible phenomenon of magnetic hysteresis.Cobalt base amorphous alloy layer magnetic permeability is high.Can guarantee that instrument transformer has high permeability, low-loss and excellent temperature performance, precision is high, and insulation property are good.
Finally, it should be pointed out that above embodiment is only the more representational example of the utility model.Obviously, the utility model is not limited to above-mentioned embodiment, can also have many distortion.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all should think and belong to protection range of the present utility model.
Claims (6)
1. a micro mutual inductor, comprises shell, circular iron core ring; It is characterized in that described shell is provided with punching borehole jack, center hole puts and is arranged with circular iron core ring; Described circular iron core ring is composited by iron-base nanometer crystal alloy core layer, Fe-based amorphous alloy core layer, cobalt base amorphous alloy layer, what be wherein positioned at circular iron core ring innermost layer is iron-base nanometer crystal alloy core layer, iron-base nanometer crystal alloy core layer is arranged with Fe-based amorphous alloy core layer outward, and Fe-based amorphous alloy core layer is arranged with cobalt base amorphous alloy layer outward; Described circular iron core ring Lower Half is wound with one group of coil, and these coil two ends are connected with two lead-out wires that stretch out shell respectively.
2. micro mutual inductor according to claim 1, is characterized in that being filled with epoxy adhesive layer between described circular iron core ring and the space of shell.
3. micro mutual inductor according to claim 1, is characterized in that described iron-base nanometer crystal alloy core layer, Fe-based amorphous alloy core layer, cobalt base amorphous alloy layer thickness are than being 3:1:1.
4. according to the micro mutual inductor described in claim 1 or 2 or 3, it is characterized in that described Fe-based amorphous alloy core layer is the loop configuration being turned to by Fe-based amorphous nanometer band.
5. according to the micro mutual inductor described in claim 1 or 2 or 3, it is characterized in that described cobalt base amorphous alloy layer is the loop configuration being turned to by cobalt base amorphous alloy band.
6. according to the micro mutual inductor described in claim 1 or 2 or 3, it is characterized in that described iron-base nanometer crystal alloy core layer is the loop configuration being turned to by iron-base nanometer crystal alloy band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320886754.2U CN203690084U (en) | 2013-12-31 | 2013-12-31 | Miniature mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320886754.2U CN203690084U (en) | 2013-12-31 | 2013-12-31 | Miniature mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203690084U true CN203690084U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320886754.2U Expired - Fee Related CN203690084U (en) | 2013-12-31 | 2013-12-31 | Miniature mutual inductor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203690084U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107025987A (en) * | 2017-05-26 | 2017-08-08 | 云南电网有限责任公司电力科学研究院 | A kind of distribution transformer and core manufacturing method with iron based nano crystal iron core |
-
2013
- 2013-12-31 CN CN201320886754.2U patent/CN203690084U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107025987A (en) * | 2017-05-26 | 2017-08-08 | 云南电网有限责任公司电力科学研究院 | A kind of distribution transformer and core manufacturing method with iron based nano crystal iron core |
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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: 20140702 Termination date: 20211231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |