CN110085403A - A kind of transformer three-limb core end magnet shielding structure and its method for shielding - Google Patents
A kind of transformer three-limb core end magnet shielding structure and its method for shielding Download PDFInfo
- Publication number
- CN110085403A CN110085403A CN201910423850.5A CN201910423850A CN110085403A CN 110085403 A CN110085403 A CN 110085403A CN 201910423850 A CN201910423850 A CN 201910423850A CN 110085403 A CN110085403 A CN 110085403A
- Authority
- CN
- China
- Prior art keywords
- magnetic screen
- clamping piece
- end magnetic
- iron core
- side column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000009413 insulation Methods 0.000 claims abstract description 41
- 238000004080 punching Methods 0.000 claims abstract description 14
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 230000001680 brushing effect Effects 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 230000002459 sustained effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
The present invention relates to a kind of transformer three-limb core end magnet shielding structure and its method for shielding, belong to technical field of transformer manufacturing.Technical solution is: end magnetic screen (3) is located at the outside of iron core side column (1), insulation board (4) are equipped between end magnetic screen (3) and iron core side column (1), end magnetic screen (3) is fixed between upper clamping piece (2a) and lower clamping piece (2b) by fastening screw (6), it is equipped with clamp insulation part (5) between end magnetic screen (3) and upper clamping piece (2a) and between end magnetic screen (3) and lower clamping piece (2b) and clamps insulation board (7), mutually insulated between punching screw rod (6) and upper clamping piece (2a) and lower clamping piece (2b).The beneficial effects of the present invention are: shielding and guidance magnetic flux can be played the role of, reduces leakage field and enter oil tank of transformer and core structure part, so as to avoid transformer hot-spot.
Description
Technical field
The present invention relates to a kind of transformer three-limb core end magnet shielding structure and its method for shielding, belong to transformer system
Make technical field.
Background technique
The biggish power transformer product of leakage magnetic flux total amount, core structure part and fuel tank are affected by leakage field, are easily generated
Hot-spot problem.For three-limb core, the area portions that the winding overhang of two side columns is covered due to iron core are seldom, end
Leakage field can largely enter in the structural members such as fuel tank and iron core, folder, generate compared with lossy, there are the risk of hot-spot,
Therefore, solve the problems, such as that side column leakage field is the key that control three pillar type transformer loss.
Summary of the invention
The object of the present invention is to provide a kind of transformer three-limb core end magnet shielding structure and its method for shielding, by iron
The leakage field of core side column winding overhang imports in iron core main magnetic circuit, reduces the flux density in oil tank of transformer and core structure part, solves
The problem of background technique.
The technical scheme is that
A kind of transformer three-limb core end magnet shielding structure, comprising iron core side column, upper clamping piece, lower clamping piece, end magnetic screen, absolutely
Listrium, clamp insulation part, fastening screw and clamping insulation board, end magnetic screen are located at the outside of iron core side column, end magnetic screen
Insulation board is equipped between iron core side column, end magnetic screen is fixed between upper clamping piece and lower clamping piece by fastening screw, end
It is equipped with clamp insulation part between the magnetic screen of between magnetic screen and upper clamping piece and end and lower clamping piece and clamps insulation board, punching
Mutually insulated between screw rod and upper clamping piece and lower clamping piece.
The end magnetic screen is two-piece, and the magnetic screen of two pieces end is located at the upper lower yoke of iron core side column same respectively
One height.
The end magnetic screen is formed by silicon steel sheet stack, and the stack direction of silicon steel sheet is identical as iron core side column, silicon steel sheet
Between brushing resin be mutually bonded for a rigidity it is whole.
A kind of transformer three-limb core end method for shielding includes iron core side column, upper clamping piece, lower clamping piece, end magnetic cup
Cover, insulation board, clamp insulation part, fastening screw and clamp insulation board, the end magnetic screen is by different length and the silicon of width
Steel disc stack forms, and silicon steel sheet is bonded integral by brushing resin between silicon steel sheet；In end, the two sides of magnetic screen, which are installed, clamps
Insulation board, and be fastened as a whole in the thickness direction of end magnetic screen using punching screw rod；The end magnetic screen is located at iron core
The outside of side column, each one up and down, the magnetic screen of two pieces end is located at sustained height with the upper lower yoke of iron core side column respectively；It is described
End magnetic screen is fixed between upper clamping piece and lower clamping piece with punching screw rod, between end magnetic screen and upper clamping piece and lower clamping piece
Folder insulating part is installed, mutually insulated between punching screw rod and upper clamping piece and lower clamping piece guarantees that end magnetic screen can be more independently
Ground connection；The end magnetic screen and the corner of iron core side column grade iron mutually stagger, and set between end magnetic screen and iron core side column
Insulation board is set, end magnetic screen and the grade iron of iron core side column are spaced from each other by insulation board, prevent end magnetic screen and iron core side column
Grade iron phase mutually overlap；Play the role of shielding and guidance magnetic flux by end magnetic screen, reduces leakage field and enter oil tank of transformer
And core structure part, so as to avoid transformer hot-spot.
The beneficial effects of the present invention are: shielding and guidance magnetic flux can be played the role of, reduces leakage field and enter transformer oil
Case and core structure part, so as to avoid transformer hot-spot.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
In figure: iron core side column 1, upper clamping piece 2a, lower clamping piece 2b, end magnetic screen 3, insulation board 4, clamp insulation part 5, punching screw rod
6, insulation board 7 is clamped.
Specific embodiment
Below in conjunction with attached drawing, by example, the invention will be further described.
Referring to attached drawing 1, a kind of transformer three-limb core end magnet shielding structure, comprising iron core side column 1, upper clamping piece 2a, under
Folder 2b, end magnetic screen 3, insulation board 4, clamp insulation part 5, fastening screw 6 and clamping insulation board 7, end magnetic screen 3 are located at
The outside of iron core side column 1, is equipped with insulation board 4 between end magnetic screen 3 and iron core side column 1, end magnetic screen 3 passes through fastening screw
6 are fixed between upper clamping piece 2a and lower clamping piece 2b, between end magnetic screen 3 and upper clamping piece 2a and end magnetic screen 3 and lower folder
It is equipped with clamp insulation part 5 between part 2b and clamps insulation board 7, between punching screw rod 6 and upper clamping piece 2a and lower clamping piece 2b mutually
Insulation.
In the present embodiment, referring to attached drawing 1, the end magnetic screen 3 by the silicon steel sheet stack of different length and width and
At silicon steel sheet is bonded integral by brushing resin between silicon steel sheet；In end, the two sides installation of magnetic screen 3 clamps insulation board 7, and
In end, the thickness direction of magnetic screen 3 is fastened as a whole using punching screw rod 6；
The end magnetic screen 3 is located at the outside of iron core side column 1, each one up and down, two pieces end magnetic screen 3 respectively with iron core side
The upper lower yoke of column 1 is located at sustained height；
The end magnetic screen 3 is fixed between upper clamping piece 2a and lower clamping piece 2b with punching screw rod 6, end magnetic screen 3 and upper folder
Clamp insulation part 5 is respectively mounted between part 2a and lower clamping piece 2b, between punching screw rod 6 and upper clamping piece 2a and lower clamping piece 2b mutually absolutely
Edge guarantees that end magnetic screen 3 can independent one point earth；
The corner of 1 grade of iron of the end magnetic screen 3 and iron core side column mutually staggers, and gap requirement is as small as possible, is conducive to end
The leakage field importing iron core side column 1 as much as possible that magnetic screen 3 sucks；
Insulation board 4 is set between end magnetic screen 3 and iron core side column 1, and insulation board 4 is by end magnetic screen 3 and iron core side column 1
Grade iron is spaced from each other, and is prevented from mutually overlapping due to end magnetic screen 3 and the grade iron phase of iron core side column 1, is made magnetic flux in end magnetic screen 3
Circulation is formed between iron yoke；
It is cooperated by the magnetic screen in end magnetic screen 3 and power transformer product folder, play shielding and guides the work of magnetic flux
With reduction leakage field enters oil tank of transformer and core structure part, so as to avoid transformer hot-spot.
Claims (4)
1. a kind of transformer three-limb core end magnet shielding structure, it is characterised in that: comprising iron core side column (1), upper clamping piece (2a),
Lower clamping piece (2b), end magnetic screen (3), insulation board (4), clamp insulation part (5), fastening screw (6) and clamping insulation board (7),
End magnetic screen (3) is located at the outside of iron core side column (1), and insulation board is equipped between end magnetic screen (3) and iron core side column (1)
(4), end magnetic screen (3) is fixed between upper clamping piece (2a) and lower clamping piece (2b) by fastening screw (6), end magnetic screen
(3) it is equipped with clamp insulation part (5) between upper clamping piece (2a) and between end magnetic screen (3) and lower clamping piece (2b) and clamps
Insulation board (7), mutually insulated between punching screw rod (6) and upper clamping piece (2a) and lower clamping piece (2b).
2. a kind of transformer three-limb core end according to claim 1 magnet shielding structure, it is characterised in that: the end
Magnetic screen (3) is two-piece, and two pieces end magnetic screen (3) is located at sustained height with the upper lower yoke of iron core side column (1) respectively.
3. a kind of transformer three-limb core end according to claim 2 magnet shielding structure, it is characterised in that: the end
Magnetic screen (3) is formed by silicon steel sheet stack, and the stack direction of silicon steel sheet is identical as iron core side column (1), and tree is brushed between silicon steel sheet
Rouge is mutually bonded as a rigidity entirety.
4. a kind of transformer three-limb core end method for shielding, it is characterised in that: comprising iron core side column (1), upper clamping piece (2a),
Lower clamping piece (2b), end magnetic screen (3), insulation board (4), clamp insulation part (5), fastening screw (6) and clamping insulation board (7),
The end magnetic screen (3) is formed by the silicon steel sheet stack of different length and width, and brushing resin is by silicon steel sheet between silicon steel sheet
It is bonded integral；In end, the two sides installation of magnetic screen (3) clamps insulation board (7), and the thickness direction in end magnetic screen (3)
It is fastened as a whole using punching screw rod (6)；The end magnetic screen (3) is located at the outside of iron core side column (1), and each one up and down,
Two pieces end magnetic screen (3) is located at sustained height with the upper lower yoke of iron core side column (1) respectively；The end magnetic screen (3) is used
Punching screw rod (6) is fixed between upper clamping piece (2a) and lower clamping piece (2b), end magnetic screen (3) and upper clamping piece (2a) and lower clamping piece
It is respectively mounted between (2b) clamp insulation part (5), mutually insulated between punching screw rod (6) and upper clamping piece (2a) and lower clamping piece (2b),
Guarantee that end magnetic screen (3) can independent one point earth；The end magnetic screen (3) and the corner of iron core side column (1) grade iron are mutual
Be staggered, between end magnetic screen (3) and iron core side column (1) be arranged insulation board (4), insulation board (4) by end magnetic screen (3) with
The grade iron of iron core side column (1) is spaced from each other, and prevents end magnetic screen (3) and the grade iron phase of iron core side column (1) from mutually overlapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423850.5A CN110085403B (en) | 2019-05-21 | 2019-05-21 | Magnetic shielding structure and magnetic shielding method for end part of three-post iron core of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423850.5A CN110085403B (en) | 2019-05-21 | 2019-05-21 | Magnetic shielding structure and magnetic shielding method for end part of three-post iron core of transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110085403A true CN110085403A (en) | 2019-08-02 |
| CN110085403B CN110085403B (en) | 2024-04-26 |
Family
ID=67421165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910423850.5A Active CN110085403B (en) | 2019-05-21 | 2019-05-21 | Magnetic shielding structure and magnetic shielding method for end part of three-post iron core of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110085403B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029114A (en) * | 2019-12-30 | 2020-04-17 | 山东泰开变压器有限公司 | Magnetic shielding device of large-capacity transformer |
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| CN201829323U (en) * | 2010-06-12 | 2011-05-11 | 特变电工沈阳变压器集团有限公司 | Clamping piece magnetic shielding structure in transformer |
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| CN202940112U (en) * | 2012-01-12 | 2013-05-15 | 洛阳恒光特种变压器有限公司 | Strip-shaped magnetic shielding structure |
| CN103426616A (en) * | 2012-05-14 | 2013-12-04 | 特变电工股份有限公司 | Magnetic shielding structure and single-phase transformer |
| JP2014216524A (en) * | 2013-04-26 | 2014-11-17 | 株式会社日立製作所 | Stationary induction apparatus |
| CN204088033U (en) * | 2014-09-26 | 2015-01-07 | 山东电力设备有限公司 | A kind of super, paralleling reactor of extra-high voltage magnetic screen |
| CN204390888U (en) * | 2015-03-12 | 2015-06-10 | 山东电力设备有限公司 | A kind of New Magnetic Field Controlled shielding radiator structure |
| CN106373762A (en) * | 2016-10-26 | 2017-02-01 | 山东电力设备有限公司 | Transformer capable of controlling magnetic flux leakage |
| CN206282708U (en) * | 2016-08-31 | 2017-06-27 | 卧龙电气集团股份有限公司 | A kind of magnet shielding structure for being applied to super-pressure auto-transformer folder |
| CN207097640U (en) * | 2017-06-22 | 2018-03-13 | 山东泰开变压器有限公司 | Folder magnetic shielding device for transformer core |
-
2019
- 2019-05-21 CN CN201910423850.5A patent/CN110085403B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4485368A (en) * | 1981-11-30 | 1984-11-27 | Alsthom-Atlantique | Electrical shunt reactor coil |
| CN201829323U (en) * | 2010-06-12 | 2011-05-11 | 特变电工沈阳变压器集团有限公司 | Clamping piece magnetic shielding structure in transformer |
| CN202102845U (en) * | 2011-05-19 | 2012-01-04 | 卧龙电气烟台东源变压器有限公司 | Casting screw type magnetic shielding structure |
| CN202159564U (en) * | 2011-06-21 | 2012-03-07 | 青岛海沃电气设备有限公司 | Controllable noise reduction device for reactors |
| CN202940112U (en) * | 2012-01-12 | 2013-05-15 | 洛阳恒光特种变压器有限公司 | Strip-shaped magnetic shielding structure |
| CN103426616A (en) * | 2012-05-14 | 2013-12-04 | 特变电工股份有限公司 | Magnetic shielding structure and single-phase transformer |
| JP2014216524A (en) * | 2013-04-26 | 2014-11-17 | 株式会社日立製作所 | Stationary induction apparatus |
| CN204088033U (en) * | 2014-09-26 | 2015-01-07 | 山东电力设备有限公司 | A kind of super, paralleling reactor of extra-high voltage magnetic screen |
| CN204390888U (en) * | 2015-03-12 | 2015-06-10 | 山东电力设备有限公司 | A kind of New Magnetic Field Controlled shielding radiator structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029114A (en) * | 2019-12-30 | 2020-04-17 | 山东泰开变压器有限公司 | Magnetic shielding device of large-capacity transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110085403B (en) | 2024-04-26 |
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