CN102543369A - Novel voltage transformer iron core and manufacturing method thereof - Google Patents
Novel voltage transformer iron core and manufacturing method thereof Download PDFInfo
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- CN102543369A CN102543369A CN2010106091491A CN201010609149A CN102543369A CN 102543369 A CN102543369 A CN 102543369A CN 2010106091491 A CN2010106091491 A CN 2010106091491A CN 201010609149 A CN201010609149 A CN 201010609149A CN 102543369 A CN102543369 A CN 102543369A
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Abstract
The invention provides a novel voltage transformer iron core and a manufacturing method thereof. The manufacturing method comprises the following steps of: winding an iron core strip along the longitudinal direction of a mould in a spiral way to form a square-shaped iron core, and taking the iron core strip down from the mould; carrying out high temperature annealing and solidification processing on the wound iron core; and after the iron core is cooled, cutting the iron core into an iron core limb and an iron yoke. Each iron chip of the novel voltage transformer iron core is formed by winding the iron core strip; and compared with the voltage transformer iron core in the prior art, the novel voltage transformer iron core has the advantages of increasing the lamination coefficient of the iron core, and adopting the whole high temperature annealing processing in a manufacturing process so that the whole performance of the iron core is more stable and physical performance difference of each part of the iron core is effectively reduced, effectively reducing the loss in an electromagnetism transmission process, and enabling the electromagnetism transmission on the iron core to be more stable, and thus improving the performances of the iron core.
Description
Technical field
The present invention relates to a kind of transformer iron core, relate in particular to a kind of new-type voltage transformer iron core and manufacturing approach thereof.
Background technology
Voltage transformer is to be used for measuring high tension loop voltage, with the requisite instrument of normal operation of other instruments in the normal operation of guaranteeing high tension loop and the high tension loop.It introduces an operating voltage U1 through the principle of mutual inductance on a winding, this voltage just produces a magnetic flux φ in iron core, according to the law of electromagnetic induction, then in secondary winding, just produce a secondary voltage U2.Voltage transformer converts high voltage to low-voltage in proportion thus.In different ratios, the unified voltage equally that becomes just can be measured the voltage up to several ten thousand volts with a kind of electric meter of voltage specification like this, and detects the normal operation of high tension loop the voltage of appearance not of uniform size on the circuit.
By inferior visible, as the critical elements in the voltage transformer, the accuracy of the stable measurement data for voltage transformer of the performance of iron core has played crucial effects.
The iron core of at present general voltage transformer piles up by several layers rectangle iron core sheet and forms, and the general employing of these rectangle iron core sheets four stripe shape silicon steel sheets dock from beginning to end and form.A common voltage lamination is made up of thousands of described rectangle iron core sheets.In the device body assembling process of voltage transformer, elder generation builds each layer rectangle iron core sheet and finishes, and forms iron core; Again the iron core of putting up is wherein simultaneously dismantled afterwards; On iron core, install once, secondary coil winding cover, last will pull down again that part of built in order again.The the tearing down and building in the process repeatedly of iron core, the plane of silicon steel sheet is prone to cause damage, and the air gap that between lamination, increases, and this all can near the magnetic flux distribution its produce distortion, thereby the voltage transformer no-load current is increased, and no-load error strengthens.And because an iron core has just comprised thousands of chip, the physical property difference of its each layer chip chamber, and the tie point when building between each chip all can influence for core current and conduct; Influence the stability of iron core voltage detecting, and because iron core constitutes complicacy, its complex installation process; The difficulty of building is big, and efficient is low, and an experienced operator need build with three hours time; If go wrong, the part that just must build is before dismantled, and builds again.
Chinese patent CN101546643A provides a kind of and has piled up the New Electromagnetic Voltage Transformer iron core that forms by " U " font silicon steel sheet and bar shaped silicon steel sheet; It has improved the efficient of iron core in assembling process; Reduce iron core air gap; Thereby low iron core no-load current of the distortion that reduces magnetic circuit and no-load error, the performance of raising iron core.This invention changes the shape of iron core member, thereby improves the efficient that iron core is built, also alleviated to a certain extent since in the build process in the iron core process for the loss of iron core, thereby improve the performance of iron core.But improve limited for the performance of iron core own.
Summary of the invention
A kind of new-type voltage transformer iron core of the present invention and manufacturing approach thereof, its purpose are to improve the stability of the current delivery of iron core, and make iron core simpler in assembling process, improve the efficiency of assembling of iron core.
New-type voltage transformer iron core of the present invention and manufacturing approach thereof realize its purpose through following technical scheme:
A kind of new-type voltage transformer iron core, wherein, said iron core is " mouth " font, said iron core comprises the multilayer lamination; Said iron core is divided into iron core column and iron yoke two parts, and said iron core column and iron yoke interfix.
Above-mentioned new-type voltage transformer iron core, wherein, said iron core is provided with a mutual induction of voltage coil, and said mutual induction of voltage coil is placed on the rib of said iron core column, and is fixed by said iron yoke.
Above-mentioned new-type voltage transformer iron core, wherein, the structure of the rib of said iron core and the structure of said mutual inductor are complementary.
Above-mentioned new-type voltage transformer iron core, wherein, the outer ledge of the rib of said iron core is stepped, is positioned at the lamination width of the lamination width of mid portion greater than said iron core upper/lower terminal.
Above-mentioned new-type voltage transformer iron core, wherein, said iron core is processed by silicon steel.
Above-mentioned new-type voltage transformer iron core; Wherein, Said iron core column and iron yoke are " U " font, and the iron core column of said " U " font and " U " font iron yoke all comprise two rib arms, and the length of two rib arms of said iron core column is all greater than the length of two rib arms of said iron yoke; The end face structure of the end face of two rib arms of iron core column and two rib arms of iron yoke matches.
Above-mentioned new-type voltage transformer iron core, wherein, the rib arm end face of said iron core column and iron yoke is a broken line type.
A kind of manufacturing approach of above-mentioned new-type voltage transformer iron core wherein, may further comprise the steps:
The first step: with the iron core bar along mould vertically turn to " mouth " font iron core with spiral form, and take off from mould;
Second step: the iron core that coiling is formed carries out The high temperature anneal;
The 3rd step: after treating said iron core cooling, said iron core is cut into iron core column and iron yoke.
The manufacturing approach of above-mentioned new-type voltage transformer iron core; Wherein, in said the 3rd step, will be through the whole japanning cured of the cooled iron core of The high temperature anneal; Make each layer lamination of iron core form an integral body, more said iron core is cut into iron core column and iron yoke two parts.
The manufacturing approach of above-mentioned new-type voltage transformer iron core, wherein, in the first step of said iron core in manufacturing process, said iron core is formed by the coiling that overlaps of an iron core bar or many iron core bars.
Adopt the advantage of the new-type voltage transformer iron core of the present invention to be:
1. each layer lamination of the new-type voltage transformer iron core of the present invention adopts the coiling of iron core bar to form; Increased the lamination coefficient of iron core, and in manufacture process, adopted the integral high-temperature annealing in process, made that the iron core overall performance is more stable; And effectively reduce the physical property difference of iron core each several part; Effectively reduce the loss in the electromagnetic transfer process, make that the electromagnetic transmission on the iron core is more stable, thereby improve the iron core performance.
2. after the new-type voltage transformer core annealing of the present invention is finished dealing with; Use the laser cutting breach; Iron core is cut into iron core column and iron yoke, be used for the suit mutual inductor, make the step of saving lapping in the iron core assembling process; Effectively improve in the voltage transformer assembling process iron core and miscellaneous part assembling speed.
Description of drawings
Fig. 1 is the structural representation of the new-type voltage transformer iron core of the present invention;
Fig. 2 is the structural representation behind the mutual inductor of loading onto of the new-type voltage transformer iron core of the present invention.
Embodiment
As depicted in figs. 1 and 2: a kind of new-type voltage transformer iron core 1, said iron core 1 is " mouth " font structure, it comprises four seamed edges.The lamination 12 that said iron core is processed by multilayer silicon steel piles up and forms.Said iron core 1 is divided into iron core column 2 and iron yoke 3.Said iron core column 2 is fastened to each other with iron yoke 3.When voltage transformer assembles, mutual induction of voltage coil 4 is enclosed within on the rib of said iron core column 2.Said iron core 1 is the enwinding type structure, and the lamination 12 of its multilayer adopts the iron core bar to form along the vertical coiling of mould, can effectively increase the lamination coefficient of said iron core 1 like this; And this iron core 1 is after piling up completion, and the iron core 1 of moulding is whole through the integral high-temperature annealing in process, makes the each several part grain refinement of iron core 1; Effectively adjust iron core each several part tissue; Eliminate tissue defects, reduce the loss in the electromagnetic transfer process, improve the performance of iron core 1.
The preparation process of said iron core may further comprise the steps:
With the iron core bar along mould vertically turn to " mouth " font iron core 1 with the helical form, and take off from mould; Second step: the iron core 1 that coiling is formed carries out The high temperature anneal; The 3rd step: after treating said iron core 1 cooling, adopt laser technology to cut into iron core column 2 and iron yoke 3 said iron core 1.Wherein, in said the 3rd step, treat 1 cooling of said iron core after; With iron core japanning cured, and make bonding formation one integral body of each lamination of whole iron core 1, more said iron core 1 is cut into iron core column 2 and iron yoke 3 two parts; Make the iron core column 2 of moulding be a monolithic devices like this, in the assembling of said iron core 1 and the miscellaneous part of voltage transformer, removed the trouble that iron core is built from iron core 3; Make assembling process simpler and easy, efficiency of assembling is significantly improved.In the winding process of iron core 1, can confirm the quantity of lamination 12 according to actual needs, can adopt an iron core silver or many iron core bars are connected coiling mutually.
As shown in Figure 1; Said iron core 1 is after cutting; The iron core column 2 and iron yoke 3 that are divided into " U " type, said iron core column 2 is " U " font with iron yoke 3, and iron core column 2 and " U " font iron yoke 3 of said " U " font all comprise two rib arms; Said iron core column 2 comprises rib arm 21 and 22, and said iron yoke 3 comprises rib arm 31 and 32.Two rib arms 21 of said iron core column 2 and 22 length are all greater than two rib arms 31 of said iron yoke 3 and 32 length; Two rib arms 31 of two rib arms 21 of iron core column 2 and 22 end face and said iron yoke 3 and 32 end face all are broken line type, and structure matches, and make said iron core column 2 be connected more firm with iron yoke 3 like this.
When assembling, the mutual induction of voltage coil is enclosed within on the rib arm of said iron core column 11, and employing bundlees or bolt is relative in twos with the end face of the rib arm of iron core column 2 and iron yoke 3, overlaps, thereby said iron core column 2 and iron yoke 3 are fixed.Because iron core column 2 formed by belonging to an iron core cutting through the integral high-temperature annealing in process originally with iron yoke 3; So its goodness of fit that connects end face is high; And effectively reduced the performance difference of iron core 1 each several part; Reduce the loss of iron core 1 electromagnetism in the electromagnetic transfer process so greatly, improved the performance of iron core 1 greatly.And simplified the build process of iron core and mutual inductor greatly, and make that the assembling of iron core 1 is simpler, quick.
In Fig. 2, mutual induction of voltage coil 4 is enclosed within on the rib arm of said iron core column 2, and the seamed edge outer ledge of said iron core 1 is stepped; Be positioned at lamination 12 width of lamination 12 width of mid portion greater than said iron core upper/lower terminal, the structure of such structure and mutual induction of voltage coil 4 is complementary, and has increased in the electromagnetic transfer process; The sectional area of magnetic conduction; Reduce the loss of voltage in the electromagnetic transfer process, increased the stability of electromagnetic sensing, improved the measuring accuracy of voltage transformer.Through experimental test, a kind of new-type voltage transformer iron core of the present invention is compared with unidimensional voltage transformer iron core, and the iron core performance improves 30%, the lossy of its electromagnetic transfer more a little less than, performance is more stable, and has more high-tension measuring accuracy.
More than specific embodiment of the present invention is described in detail, but it is just as example, the present invention is not restricted to the specific embodiment of above description.To those skilled in the art, any equivalent modifications that the present invention is carried out with substitute also all among category of the present invention.Therefore, not breaking away from impartial conversion and the modification of being done under the spirit and scope of the present invention, all should contain within the scope of the invention.
Claims (10)
1. a new-type voltage transformer iron core is characterized in that, said iron core is " mouth " font, and said iron core comprises the multilayer lamination; Said iron core is divided into iron core column and iron yoke two parts, and said iron core column and iron yoke interfix.
2. new-type voltage transformer iron core according to claim 1 is characterized in that said iron core is provided with a mutual induction of voltage coil, and said mutual induction of voltage coil is placed on the rib of said iron core column, and is fixed by said iron yoke.
3. new-type voltage transformer iron core according to claim 1 is characterized in that the structure of the rib of said iron core and the structure of said mutual inductor are complementary.
4. new-type voltage transformer iron core according to claim 3 is characterized in that the outer ledge of the rib of said iron core is stepped, is positioned at the lamination width of the lamination width of mid portion greater than said iron core upper/lower terminal.
5. new-type voltage transformer iron core according to claim 1 is characterized in that said iron core is processed by silicon steel.
6. new-type voltage transformer iron core according to claim 1; It is characterized in that; Said iron core column and iron yoke are " U " font; The iron core column of said " U " font and " U " font iron yoke all comprise two rib arms, and the length of two rib arms of said iron core column is all greater than the length of two rib arms of said iron yoke; The end face structure of the end face of two rib arms of iron core column and two rib arms of iron yoke matches.
7. new-type voltage transformer iron core according to claim 1 is characterized in that, the rib arm end face of said iron core column and iron yoke is a broken line type.
8. the manufacturing approach according to the said new-type voltage transformer iron core of claim 1 is characterized in that, may further comprise the steps:
The first step: with the iron core bar along mould vertically turn to " mouth " font iron core with spiral form, and take off from mould;
Second step: the iron core that coiling is formed carries out The high temperature anneal;
The 3rd step: after treating said iron core cooling, said iron core is cut into iron core column and iron yoke.
9. the manufacturing approach of new-type voltage transformer iron core according to claim 8; It is characterized in that; In said the 3rd step; To make each layer lamination of iron core form an integral body through the whole japanning cured of the cooled iron core of The high temperature anneal, more said iron core cut into iron core column and iron yoke two parts.
10. the manufacturing approach of new-type voltage transformer iron core according to claim 8 is characterized in that, in the first step of said iron core in manufacturing process, said iron core is formed by the coiling that overlaps of an iron core bar or many iron core bars.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106091491A CN102543369A (en) | 2010-12-28 | 2010-12-28 | Novel voltage transformer iron core and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106091491A CN102543369A (en) | 2010-12-28 | 2010-12-28 | Novel voltage transformer iron core and manufacturing method thereof |
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| CN102543369A true CN102543369A (en) | 2012-07-04 |
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| CN2010106091491A Pending CN102543369A (en) | 2010-12-28 | 2010-12-28 | Novel voltage transformer iron core and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113470954A (en) * | 2021-06-03 | 2021-10-01 | 河南平高电气股份有限公司 | Mutual inductor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125871U (en) * | 1992-04-18 | 1992-12-23 | 陆建军 | Transformer core |
| CN1276910A (en) * | 1997-08-21 | 2000-12-13 | 联合讯号公司 | Segmented transformer core |
| WO2005027155A1 (en) * | 2003-09-17 | 2005-03-24 | Vijai Electricals Limited | A method of making a three-phase transformer with triangular core structure and a three-phase transformer with triangular core structure thereof |
| CN1808643A (en) * | 2006-02-15 | 2006-07-26 | 张长增 | Sectional iron core transformer/reactor |
| CN101067983A (en) * | 2007-03-26 | 2007-11-07 | 沈永其 | Symmetric three-phase transformer |
| CN201054297Y (en) * | 2007-05-30 | 2008-04-30 | 上海吴淞电气实业有限公司 | A novel electromagnetic voltage mutual inductor iron core |
-
2010
- 2010-12-28 CN CN2010106091491A patent/CN102543369A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125871U (en) * | 1992-04-18 | 1992-12-23 | 陆建军 | Transformer core |
| CN1276910A (en) * | 1997-08-21 | 2000-12-13 | 联合讯号公司 | Segmented transformer core |
| WO2005027155A1 (en) * | 2003-09-17 | 2005-03-24 | Vijai Electricals Limited | A method of making a three-phase transformer with triangular core structure and a three-phase transformer with triangular core structure thereof |
| CN1808643A (en) * | 2006-02-15 | 2006-07-26 | 张长增 | Sectional iron core transformer/reactor |
| CN101067983A (en) * | 2007-03-26 | 2007-11-07 | 沈永其 | Symmetric three-phase transformer |
| CN201054297Y (en) * | 2007-05-30 | 2008-04-30 | 上海吴淞电气实业有限公司 | A novel electromagnetic voltage mutual inductor iron core |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113470954A (en) * | 2021-06-03 | 2021-10-01 | 河南平高电气股份有限公司 | Mutual inductor |
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Application publication date: 20120704 |