CN105448482A - Magnetic flux leakage connected type magnetic shielding structure among transformer core limbs and loss reducing method - Google Patents
Magnetic flux leakage connected type magnetic shielding structure among transformer core limbs and loss reducing method Download PDFInfo
- Publication number
- CN105448482A CN105448482A CN201510988356.5A CN201510988356A CN105448482A CN 105448482 A CN105448482 A CN 105448482A CN 201510988356 A CN201510988356 A CN 201510988356A CN 105448482 A CN105448482 A CN 105448482A
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- Prior art keywords
- magnetic screen
- transformer
- magnetic
- magnetic shielding
- screen
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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
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- 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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to a magnetic flux leakage communication type magnetic shielding structure among transformer core limbs and a loss reducing method and belongs to the transformer manufacturing technical field. The technical solution is that: a first magnetic shielding (3) and a second magnetic shielding (4) are respectively arranged on the front and rear tank walls of a transformer oil tank (1); the first magnetic shielding (3) and the second magnetic shielding (4) are arranged transversely and symmetrically; a fourth magnetic shielding (7) and a fifth magnetic shielding (8) are respectively arranged on the two side tank walls of the transformer oil tank (1); the fourth magnetic shielding (7) and the fifth magnetic shielding (8) are arranged transversely and symmetrically; a third magnetic shielding (5) and a sixth magnetic shielding (9) are respectively arranged on the upper and lower clamping elements of the core limbs; the third magnetic shielding (5) and the sixth magnetic shielding (9) are arranged transversely and symmetrically; the first magnetic shielding (3) and the second magnetic shielding (4), the fourth magnetic shielding and the fifth magnetic shielding, and the third magnetic shielding and the sixth magnetic shielding are respectively located among different core limbs. The invention has advantages of preventing the structure element from heating or local overheating, putting an end to electricity shielding and reducing loss of the transformer.
Description
Technical field
The present invention relates to a kind of transformer core intercolumniation leakage field communicate-type magnet shielding structure and the method that reduces the wastage, the magnet shielding structure of the large-scale three-phase transformer of especially many core limbs parallel connection, belong to transformer making apparatus technical field.
Background technology
In large-scale three-phase power transformer, because product capacity is increasing, product impedance is also comparatively large, so product leakage field total amount is also increasing, the transformer device structure part causing leakage field to affect is overheated.
Traditional magnet shielding structure arranges magnetic screen on folder, and this traditional clamping piece magnetic shielding structure coordinates fuel tank shielding to use, and is only leakage field path in this core limb of conducting to the conducting of leakage field.And when transformer uses detachable lead-in wire, tank side carries out leakage field conducting because the reason of perforate cannot arrange magnetic screen, and electric screen can only be used, the principle of electric screen is the anti-magnetic of eddy current, cause leakage field conducting not thorough, leakage flux passes through core construction part phenomenon seriously, causes structural member to generate heat comparatively serious.And even if conducting can be carried out to the leakage flux of a core limb, this conventional method also has that magnetic circuit is long, waste material, and the inferior positions such as magnetic resistance is larger, when magnetic flux leakage is increasing, become more and more inapplicable.
Summary of the invention
The object of the invention is to provide a kind of transformer core intercolumniation leakage field communicate-type magnet shielding structure and the method that reduces the wastage, on transformer oil tank wall and on folder from top to bottom unshakable in one's determination, laterally place magnetic screen respectively, the position of magnetic screen between different core limbs, solves Problems existing in background technology.
Technical scheme of the present invention is:
A kind of transformer core intercolumniation leakage field communicate-type magnet shielding structure, comprise oil tank of transformer, magnetic screen one, magnetic screen two, magnetic screen three, magnetic screen four, magnetic screen five and magnetic screen six, the front and back tank wall of oil tank of transformer is respectively equipped with magnetic screen one and magnetic screen two, magnetic screen one and magnetic screen two lateral symmetry are arranged, the both sides box wall of oil tank of transformer is respectively equipped with magnetic screen four and magnetic screen five, magnetic screen four and magnetic screen five lateral symmetry are arranged, folder from top to bottom unshakable in one's determination is respectively equipped with magnetic screen three and magnetic screen six, magnetic screen three and magnetic screen six lateral symmetry are arranged, described magnetic screen one and magnetic screen two, magnetic screen four and magnetic screen five, magnetic screen three and magnetic screen six lay respectively between different core limbs.
Described magnetic screen one, magnetic screen two, magnetic screen three, magnetic screen four, magnetic screen five are identical with core lamination with the material of magnetic screen six.
A kind of reduction transformer loss method, comprises following processing step:
adopt a kind of transformer core intercolumniation leakage field communicate-type magnet shielding structure, this structure comprises oil tank of transformer, magnetic screen one, magnetic screen two, magnetic screen three, magnetic screen four, magnetic screen five and magnetic screen six, the front and back tank wall of oil tank of transformer is respectively equipped with magnetic screen one and magnetic screen two, magnetic screen one and magnetic screen two lateral symmetry are arranged, the both sides box wall of oil tank of transformer is respectively equipped with magnetic screen four and magnetic screen five, magnetic screen four and magnetic screen five lateral symmetry are arranged, folder from top to bottom unshakable in one's determination is respectively equipped with magnetic screen three and magnetic screen six, magnetic screen three and magnetic screen six lateral symmetry are arranged, described magnetic screen one and magnetic screen two, magnetic screen four and magnetic screen five, magnetic screen three and magnetic screen six lay respectively between different core limbs,
the thickness direction of magnetic screen 1, magnetic screen 24, magnetic screen 35, magnetic screen 47, magnetic screen 58 and magnetic screen 69 is just placed leakage flux direction, folder from top to bottom unshakable in one's determination is respectively equipped with magnetic screen 35 and magnetic screen 69, for being communicated with intercolumniation leakage field, improve leakage flux flow cycle, offset part leakage field, restriction leakage field trend, makes it reduce through core construction part and fuel tank, reduces transformer loss.
In three-phase transformer and many core limbs shunt transformer, leakage field direction difference angle between each core limb, and it is incomplete same, by the magnetic screen arranged on transformer oil tank wall and on folder from top to bottom unshakable in one's determination, not only can offset part leakage field effect, more can limit leakage field trend, make it reduce through core construction part and fuel tank, reach the object of saving material, reducing transformer load loss.
The invention has the beneficial effects as follows: avoid structural member to generate heat and local overheating.Structure is simple, has very strong versatility, has stopped the use of electric screen, reduced transformer loss further.
Accompanying drawing explanation
Fig. 1 is vertical view of the present invention;
Fig. 2 is end view of the present invention;
In figure: oil tank of transformer 1, iron core 2, magnetic screen 1, magnetic screen 24, magnetic screen 35, coil 6, magnetic screen 47, magnetic screen 58, magnetic screen 69.
Embodiment
Below in conjunction with accompanying drawing, by example, the invention will be further described.
With reference to accompanying drawing 1, 2, a kind of transformer core intercolumniation leakage field communicate-type magnet shielding structure, comprise oil tank of transformer 1, magnetic screen 1, magnetic screen 24, magnetic screen 35, magnetic screen 47, magnetic screen 58 and magnetic screen 69, the front and back tank wall of oil tank of transformer 1 is respectively equipped with magnetic screen 1 and magnetic screen 24, magnetic screen 1 and magnetic screen 24 lateral symmetry are arranged, the both sides box wall of oil tank of transformer 1 is respectively equipped with magnetic screen 47 and magnetic screen 58, magnetic screen 47 and magnetic screen 58 lateral symmetry are arranged, folder from top to bottom unshakable in one's determination is respectively equipped with magnetic screen 35 and magnetic screen 69, magnetic screen 35 and magnetic screen 69 lateral symmetry are arranged, described magnetic screen 1 and magnetic screen 24, magnetic screen 47 and magnetic screen 58, magnetic screen 35 and magnetic screen 69 lay respectively between different core limbs.
A kind of reduction transformer loss method, comprises following processing step:
adopt a kind of transformer core intercolumniation leakage field communicate-type magnet shielding structure, this structure comprises oil tank of transformer, magnetic screen one, magnetic screen two, magnetic screen three, magnetic screen four, magnetic screen five and magnetic screen six, the front and back tank wall of oil tank of transformer is respectively equipped with magnetic screen one and magnetic screen two, magnetic screen one and magnetic screen two lateral symmetry are arranged, the both sides box wall of oil tank of transformer is respectively equipped with magnetic screen four and magnetic screen five, magnetic screen four and magnetic screen five lateral symmetry are arranged, folder from top to bottom unshakable in one's determination is respectively equipped with magnetic screen three and magnetic screen six, magnetic screen three and magnetic screen six lateral symmetry are arranged, described magnetic screen one and magnetic screen two, magnetic screen four and magnetic screen five, magnetic screen three and magnetic screen six lay respectively between different core limbs,
the thickness direction of magnetic screen 1, magnetic screen 24, magnetic screen 35, magnetic screen 47, magnetic screen 58 and magnetic screen 69 is just placed leakage flux direction, folder from top to bottom unshakable in one's determination is respectively equipped with magnetic screen 35 and magnetic screen 69, for being communicated with intercolumniation leakage field, improve leakage flux flow cycle, offset part leakage field, restriction leakage field trend, makes it reduce through core construction part and fuel tank, reduces transformer loss.
In the present embodiment, magnetic screen 1, magnetic screen 24, magnetic screen 35, magnetic screen 47, magnetic screen 58 and magnetic screen 69 all adopt silicon steel sheet material with core lamination.The thickness direction of magnetic screen 1, magnetic screen 24, magnetic screen 35, magnetic screen 47, magnetic screen 58 and magnetic screen 69 is just placed leakage flux direction, folder from top to bottom unshakable in one's determination is respectively equipped with magnetic screen 35 and magnetic screen 69, for being communicated with intercolumniation leakage field, improve leakage flux flow cycle.
Claims (3)
1. a transformer core intercolumniation leakage field communicate-type magnet shielding structure, it is characterized in that comprising oil tank of transformer (1), magnetic screen one (3), magnetic screen two (4), magnetic screen three (5), magnetic screen four (7), magnetic screen five (8) and magnetic screen six (9), the front and back tank wall of oil tank of transformer (1) is respectively equipped with magnetic screen one (3) and magnetic screen two (4), magnetic screen one (3) and magnetic screen two (4) lateral symmetry are arranged, the both sides box wall of oil tank of transformer (1) is respectively equipped with magnetic screen four (7) and magnetic screen five (8), magnetic screen four (7) and magnetic screen five (8) lateral symmetry are arranged, folder from top to bottom unshakable in one's determination is respectively equipped with magnetic screen three (5) and magnetic screen six (9), magnetic screen three (5) and magnetic screen six (9) lateral symmetry are arranged, described magnetic screen one (3) and magnetic screen two (4), magnetic screen four (7) and magnetic screen five (8), magnetic screen three (5) and magnetic screen six (9) lay respectively between different core limbs.
2. transformer core intercolumniation leakage field communicate-type magnet shielding structure according to claim 1, is characterized in that described magnetic screen one (3), magnetic screen two (4), magnetic screen three (5), magnetic screen four (7), magnetic screen five (8) are identical with core lamination with the material of magnetic screen six (9).
3. reduce a transformer loss method, it is characterized in that comprising following processing step:
adopt a kind of transformer core intercolumniation leakage field communicate-type magnet shielding structure, this structure comprises oil tank of transformer, magnetic screen one, magnetic screen two, magnetic screen three, magnetic screen four, magnetic screen five and magnetic screen six, the front and back tank wall of oil tank of transformer is respectively equipped with magnetic screen one and magnetic screen two, magnetic screen one and magnetic screen two lateral symmetry are arranged, the both sides box wall of oil tank of transformer is respectively equipped with magnetic screen four and magnetic screen five, magnetic screen four and magnetic screen five lateral symmetry are arranged, folder from top to bottom unshakable in one's determination is respectively equipped with magnetic screen three and magnetic screen six, magnetic screen three and magnetic screen six lateral symmetry are arranged, described magnetic screen one and magnetic screen two, magnetic screen four and magnetic screen five, magnetic screen three and magnetic screen six lay respectively between different core limbs,
the thickness direction of magnetic screen 1, magnetic screen 24, magnetic screen 35, magnetic screen 47, magnetic screen 58 and magnetic screen 69 is just placed leakage flux direction, folder from top to bottom unshakable in one's determination is respectively equipped with magnetic screen 35 and magnetic screen 69, for being communicated with intercolumniation leakage field, improve leakage flux flow cycle, offset part leakage field, restriction leakage field trend, makes it reduce through core construction part and fuel tank, reduces transformer loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988356.5A CN105448482A (en) | 2015-12-28 | 2015-12-28 | Magnetic flux leakage connected type magnetic shielding structure among transformer core limbs and loss reducing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988356.5A CN105448482A (en) | 2015-12-28 | 2015-12-28 | Magnetic flux leakage connected type magnetic shielding structure among transformer core limbs and loss reducing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105448482A true CN105448482A (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510988356.5A Pending CN105448482A (en) | 2015-12-28 | 2015-12-28 | Magnetic flux leakage connected type magnetic shielding structure among transformer core limbs and loss reducing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273221A (en) * | 2018-11-29 | 2019-01-25 | 山东达驰电气有限公司 | A kind of magnet shielding structure of transformer |
| JP2020043217A (en) * | 2018-09-11 | 2020-03-19 | 富士電機株式会社 | Transformer |
| CN113571307A (en) * | 2021-07-13 | 2021-10-29 | 西安交通大学 | Power transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB218918A (en) * | 1923-09-18 | 1924-07-17 | Gen Electric | Improvements in and relating to electric transformers |
| CN101770854A (en) * | 2008-12-30 | 2010-07-07 | 特变电工沈阳变压器集团有限公司 | Magnetic leakage shielding method of ultra-large capacity transformer |
| 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 |
| CN102368428A (en) * | 2011-11-02 | 2012-03-07 | 山东电力设备有限公司 | Double-capacity power transformer |
| 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 |
-
2015
- 2015-12-28 CN CN201510988356.5A patent/CN105448482A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB218918A (en) * | 1923-09-18 | 1924-07-17 | Gen Electric | Improvements in and relating to electric transformers |
| CN101770854A (en) * | 2008-12-30 | 2010-07-07 | 特变电工沈阳变压器集团有限公司 | Magnetic leakage shielding method of ultra-large capacity transformer |
| 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 |
| CN102368428A (en) * | 2011-11-02 | 2012-03-07 | 山东电力设备有限公司 | Double-capacity power transformer |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020043217A (en) * | 2018-09-11 | 2020-03-19 | 富士電機株式会社 | Transformer |
| CN109273221A (en) * | 2018-11-29 | 2019-01-25 | 山东达驰电气有限公司 | A kind of magnet shielding structure of transformer |
| CN113571307A (en) * | 2021-07-13 | 2021-10-29 | 西安交通大学 | Power transformer |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |