CN103000357B - A kind of magnet shielding structure and processing method thereof with bending - Google Patents
A kind of magnet shielding structure and processing method thereof with bending Download PDFInfo
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- CN103000357B CN103000357B CN201210521747.2A CN201210521747A CN103000357B CN 103000357 B CN103000357 B CN 103000357B CN 201210521747 A CN201210521747 A CN 201210521747A CN 103000357 B CN103000357 B CN 103000357B
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Abstract
The invention discloses a kind of magnet shielding structure and the processing method thereof with bending, magnet shielding structure comprises stack and forms silicon steel sheet, the upper and lower that described stack forms silicon steel sheet are respectively arranged with the first pressing plate and the second pressing plate, and described silicon steel sheet stack is between the first pressing plate and the second pressing plate; Described often open between silicon steel sheet bonding by epoxy glue.Because silicon steel sheet slightly firmly gets final product bending, therefore silicon steel sheet of the present invention realizes bending by the bending structure of pressing plate, then presses the second pressing plate again on silicon steel sheet upper strata, so, not only achieve the bending of silicon steel sheet, and warpage and distortion is less likely to occur silicon steel sheet.
Description
Technical field:
The invention belongs to transformer manufacture technology, relate to a kind of magnetic screen and the processing method thereof with bending.
Background technology:
In high-power transformer, in order to reduce the stray loss in various structural member (fuel tank, yoke clip piece, strutting piece etc.), the Structure composing one of magnetic screen is usually adopted to have high magnetic permeability, low-loss magnetic flux path, thus greatly reduce the leakage flux entered in structural member, effectively reduce the eddy current loss in structural member and magnetic hysteresis loss.
Fuel tank magnetic screen is generally only arranged on the part tank wall in the scope corresponding to winding of high and low pressure both sides, but along with more and more and by some Oiltank structure restrictions of high pressure, ultra high voltage production need to utilize special process, by magnetic screen being bent into specific angle, (magnetic screen bending angle will match with lower connected tank, and fix to prevent vibrations), special-shaped magnetic screen (lower oil tank and top side cover) is shielded with tank wall and is connected to meet the needs of production.
Summary of the invention:
The present invention proposes a kind of magnet shielding structure and the processing method thereof with bending, magnetic screen is bent into specific angle, magnetic screen bending angle and lower connected tank are matched, and fix prevent vibrations, special-shaped magnetic screen (lower oil tank and top side cover) is shielded with tank wall and is connected to meet the needs of production.
The technical solution adopted in the present invention is:
A kind of magnet shielding structure with bending, comprise stack and form silicon steel sheet, the upper and lower that described stack forms silicon steel sheet are respectively arranged with the first pressing plate and the second pressing plate, described first pressing plate and the second pressing plate all have the bending structure of requirement, and described silicon steel sheet stack is between the first pressing plate and the second pressing plate; Described often open between silicon steel sheet bonding by epoxy glue.
As the preferred embodiments of the present invention, described first pressing plate, silicon steel sheet, and the correspondence position of the second pressing plate is provided with location hole, ensures that the internal layer of silicon steel sheet is concordant with skin by location hole;
As the preferred embodiments of the present invention, be provided with keeper in described location hole, the outer setting of described keeper has demoulding protector, prevents keeper and magnetic screen from sticking together and departing from difficulty;
As the preferred embodiments of the present invention, the described epoxy glue often opened between silicon steel sheet is only coated in the position beyond location hole 5cm;
As the preferred embodiments of the present invention, the side of described first pressing plate and the second pressing plate is provided with C clamp further in order at end winding support silicon steel sheet;
There is a processing method for the magnetic screen of bending, comprise the following steps:
(1) the first pressing plate of the bending structure with requirement is provided, at the first pressing plate, keeper is installed, multiple silicon steel sheet is placed on successively on the first pressing plate, required angle is fixedly leaned on into by keeper, then on stack silicon steel sheet together, place the second pressing plate to compress silicon steel sheet, finally, by keeper, the first pressing plate, silicon steel sheet and the second pressing plate are fitted together;
(2) carry out fastening bonding in the end of silicon steel sheet with C clamp, finally in drying room, bending magnetic screen is cured, and tightens up to prevent workpiece deformation after solidification with Tightener.
As the preferred embodiments of the present invention, the outer setting of described keeper has demoulding protector, prevents keeper and magnetic screen from sticking together and departing from difficulty;
As the preferred embodiments of the present invention, undertaken bonding by epoxy glue between described silicon steel sheet, but, around location hole, can not epoxy glue be applied beyond 5cm;
As the preferred embodiments of the present invention, the spilling of epoxy glue in described silicon steel sheet bonding process, can not be had.
The present invention at least has the following advantages: present invention process scheme solves in some high voltage, extreme high voltage and causes because of the restriction of Oiltank structure using original conventional magnetic screen, adopts the abnormal shape of this structure (bending) magnetic screen to solve the problems referred to above and then reaches the object meeting the shielding requirements designed.
Accompanying drawing illustrates:
Fig. 1 is the structure chart of the first pressing plate, and wherein, Fig. 1 (A) is vertical view, and Fig. 1 (B) is end view;
Fig. 2 is the structure chart of the second pressing plate, and wherein, Fig. 2 (A) is vertical view, and Fig. 2 (B) is end view.
Embodiment:
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described:
The electromagnetic armouring structure that power transformer tank often adopts flat magnetic screen and copper shield to combine.Conventional magnetic screen processing is that the silicon steel sheet scribbling epoxy glue is carried out stack according to design quantity on bonding frame is bonding, after folded enough requested numbers, it is dried with special tooling clamping, makes it to become a solid entirety.Then place it on fuel tank, between magnetic screen and fuel tank, place insulation tank pad, use the fixed head welded on tank wall in advance magnetic screen to be fixed.Along with improving constantly of my Products electric pressure and capacity, high pressure, ultra high voltage production are more and more, for oversize transformer, its lower oil tank and top side cover also will install magnetic screen, the two ends up and down of magnetic screen are made to extend to Double layer iron yoke near center location unshakable in one's determination, this special process will using this is bent into specific angle, and the magnetic screen cover lower oil tank and top side and tank wall magnetic screen are made of one.
Below the core technology main points of producing special-shaped magnetic screen:
1, this special-shaped magnetic screen uses frock to assist bending to manufacture, bending auxiliary mould is made up of the first pressing plate (see accompanying drawing 1) and the second pressing plate (see accompanying drawing 2) two large divisions, first pressing plate and the second pressing plate all adopt steel plate to process the angle (must ensure radius bend and bending angle) ensureing designing requirement bending, utilize workpiece hole as location hole and adopt keeper to position, concordant with outer slice, thin piece with internal layer after ensureing folding type, ensure to coordinate with lower connected tank after bending contraposition is installed.
2, adopt this frock, when bonding, monolithic silicon steel sheet is directly carried out bending on bent plate, ensure that internal layer is concordant with outer lamination with keeper, do demoulding protection to prevent keeper and magnetic screen in magnetic screen bonding process from sticking together and departing from difficulty in keeper external demand.
3, to often open silicon steel sheet carry out painting epoxy glue (note location hole week about 5cm can not carry out gluing, the epoxy glue of the even brushing layer in all the other positions, can not have the spilling of epoxy glue in silicon steel sheet bonding process) carry out bonding stack.
4, (note when use C-type clamp coordinate bonding with C clamp with the use of clamping it with pressing plate after stack bonds to requested number, should according to the width of production bending magnetic screen, one is clamped every 100mm to 150mm,) and utilize special simple and easy drying room to be cured bending magnetic screen, use Tightener to tighten up (the every part of Tightener not etc. be less than 3) after solidification and prevent workpiece deformation.Preserve not beneficial to one week after solidifying and setting, to prevent from causing secondary deformation to magnetic screen.
Claims (9)
1. one kind has the magnet shielding structure of bending, it is characterized in that: comprise stack and form silicon steel sheet, the upper and lower that described stack forms silicon steel sheet are respectively arranged with the first pressing plate and the second pressing plate, described first pressing plate and the second pressing plate all have the bending structure of requirement, and described silicon steel sheet stack is between the first pressing plate and the second pressing plate; Described often open between silicon steel sheet bonding by epoxy glue; Described first pressing plate is provided with keeper, multiple silicon steel sheet is placed on successively on the first pressing plate, required angle is fixedly leaned on into by keeper, then on stack silicon steel sheet together, place the second pressing plate to compress silicon steel sheet, finally, by keeper, the first pressing plate, silicon steel sheet and the second pressing plate are fitted together.
2. a kind of magnet shielding structure with bending as claimed in claim 1, it is characterized in that: described first pressing plate, silicon steel sheet, and the correspondence position of the second pressing plate is provided with location hole, ensures that the internal layer of silicon steel sheet is concordant with skin by location hole.
3. a kind of magnet shielding structure with bending as claimed in claim 2, it is characterized in that: be provided with keeper in described location hole, the outer setting of described keeper has demoulding protector, prevents keeper and magnetic screen from sticking together and departing from difficulty.
4. a kind of magnet shielding structure with bending as claimed in claim 2, is characterized in that: the described epoxy glue often opened between silicon steel sheet is only coated in the position beyond location hole 5cm.
5. a kind of magnet shielding structure with bending as claimed in claim 1, is characterized in that: the side of described first pressing plate and the second pressing plate is provided with C clamp further in order at end winding support silicon steel sheet.
6. there is a processing method for the magnetic screen of bending, it is characterized in that: comprise the following steps:
(1) the first pressing plate of the bending structure with requirement is provided, at the first pressing plate, keeper is installed, multiple silicon steel sheet is placed on successively on the first pressing plate, required angle is fixedly leaned on into by keeper, then on stack silicon steel sheet together, place the second pressing plate to compress silicon steel sheet, finally, by keeper, the first pressing plate, silicon steel sheet and the second pressing plate are fitted together;
(2) carry out fastening being adhesively fixed with C clamp in the end of silicon steel sheet, finally in drying room, bending magnetic screen is cured, and tightens up to prevent workpiece deformation after solidification with Tightener.
7. a kind of processing method with the magnetic screen of bending as claimed in claim 6, is characterized in that: the outer setting of described keeper has demoulding protector, prevents keeper and magnetic screen from sticking together and departing from difficulty.
8. a kind of processing method with the magnetic screen of bending as claimed in claim 6, is characterized in that: undertaken bonding by epoxy glue between described silicon steel sheet, but, around location hole, can not epoxy glue be applied beyond 5cm.
9. a kind of processing method with the magnetic screen of bending as claimed in claim 8, is characterized in that: the spilling that can not have epoxy glue in described silicon steel sheet bonding process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210521747.2A CN103000357B (en) | 2012-12-07 | 2012-12-07 | A kind of magnet shielding structure and processing method thereof with bending |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210521747.2A CN103000357B (en) | 2012-12-07 | 2012-12-07 | A kind of magnet shielding structure and processing method thereof with bending |
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| Publication Number | Publication Date |
|---|---|
| CN103000357A CN103000357A (en) | 2013-03-27 |
| CN103000357B true CN103000357B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210521747.2A Active CN103000357B (en) | 2012-12-07 | 2012-12-07 | A kind of magnet shielding structure and processing method thereof with bending |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111075811B (en) * | 2019-12-09 | 2021-08-06 | 天威保变(合肥)变压器有限公司 | Oil tank magnetic shielding bonding method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689419Y (en) * | 2003-10-12 | 2005-03-30 | 文泽生 | Oil immersed hollow reactors with magnetic shielding |
| CN200986848Y (en) * | 2006-10-05 | 2007-12-05 | 文浩 | Initiative field full magnetic shading squirrel cage-shaped dry hollow reactor |
| CN201804691U (en) * | 2010-06-30 | 2011-04-20 | 特变电工沈阳变压器集团有限公司 | Single-phase super-capacity transformer for nuclear power station |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2712129B2 (en) * | 1988-11-30 | 1998-02-10 | 株式会社リケン | Composite magnetic shielding material |
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2012
- 2012-12-07 CN CN201210521747.2A patent/CN103000357B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689419Y (en) * | 2003-10-12 | 2005-03-30 | 文泽生 | Oil immersed hollow reactors with magnetic shielding |
| CN200986848Y (en) * | 2006-10-05 | 2007-12-05 | 文浩 | Initiative field full magnetic shading squirrel cage-shaped dry hollow reactor |
| CN201804691U (en) * | 2010-06-30 | 2011-04-20 | 特变电工沈阳变压器集团有限公司 | Single-phase super-capacity transformer for nuclear power station |
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| CN103000357A (en) | 2013-03-27 |
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Effective date of registration: 20160630 Address after: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee after: China XD Electronic Corporation Patentee after: Xi'an XD Transformer Co., Ltd. Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee before: China XD Electronic Corporation |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20130327 Assignee: Xi'an XD Transformer Co., Ltd. Assignor: Xi'an Xidian Transformer Co., Ltd.| China Xidian electric Limited by Share Ltd Contract record no.: 2016610000045 Denomination of invention: Magnetic shielding structure with bend and processing method thereof Granted publication date: 20160120 License type: Exclusive License Record date: 20160908 |
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