CN106373762A - Transformer capable of controlling magnetic flux leakage - Google Patents
Transformer capable of controlling magnetic flux leakage Download PDFInfo
- Publication number
- CN106373762A CN106373762A CN201610944063.1A CN201610944063A CN106373762A CN 106373762 A CN106373762 A CN 106373762A CN 201610944063 A CN201610944063 A CN 201610944063A CN 106373762 A CN106373762 A CN 106373762A
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- CN
- China
- Prior art keywords
- transformer
- transformator
- magnetic shield
- copper
- leakage field
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Classifications
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- 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)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
The invention discloses a transformer capable of controlling magnetic flux leakage. The transformer comprises lung lobe type shields which are arranged in yoke cushion blocks at the upper end and the lower end of a transformer body, a copper shield which is arranged on the inner wall of a transformer oil tank, bar-type magnetic shields which are paved at the upper end and the lower end of the copper shield and are composed of at least one magnetic shielding bar respectively, and L-shaped copper plates which are arranged at the positions of tank edges of an upper joint and a lower joint to be connected with the copper shield. According to the transformer, the problems such as local overheating of metal structural members inside the transformer and local overheating of the transformer oil tank and connecting bolts of the upper joint and the lower joint can be solved effectively.
Description
Technical field
The present invention relates to transformer manufacture technology, more particularly, to a kind of transformator controlling leakage field.
Background technology
Develop to super extra-high voltage, Large Copacity, remote direction with power system, Large Copacity AC transformer and direct current become
Depressor will be used widely.The usual leakage magnetic flux of high-power transformer is very big, and leakage magnetic flux enters hardware, produces additional damage
Consume and cause inside transformer hardware local pyrexia, if temperature is too high, will accelerate to contact the aging of oil.Transformation
Device oil starts to decompose when more than 140 DEG C～150 DEG C, forms alkane, alkene and hydrogen and is reflected in the gas chromatographic analysiss of oil,
Impact transformator normally runs.Additionally, the leakage field of high-power transformer is connected with greatly forms closure magnetic force by fuel tank
Loop, causes transformer box wall overheated.With the increase of leakage field, transformator saves up and down and produces substantial amounts of vortex inside connecting bolt
Loss and magnetic hystersis loss, cause hot-spot, and this phenomenon are all the more obvious with the increase of transformator single-column capacity.Cause
How this, carry out leakage field control to high-power transformer, it is to avoid hot-spot phenomenon is current art difficulties.
Content of the invention
For the problems referred to above, the present invention provides a kind of transformator controlling leakage field.
For solving the above problems, the technical scheme that the present invention takes is: a kind of transformator controlling leakage field, including being arranged at
Lobe of the lung type magnetic shield in the iron yoke cushion block of transformer body upper and lower end, the copper shield being arranged on transformer oil chamber interior wall and
It is layed in the bar shaped magnetic shield that copper shield upper and lower ends are made up of at least one magnetic shield bar respectively and be arranged at upper lower box
The l type copper coin being connected with copper shield at edge.
Lobe of the lung type magnetic shield can solve the problems, such as inside transformer hardware hot-spot, copper shield, bar shaped magnetic shield
Oil tank of transformer can be solved the problems, such as with l type copper coin and save connecting bolt hot-spot up and down.
Described magnetic shield bar is layed in copper shield surface by the bent plate of its surrounding, and copper shield is provided with opening, bent plate
It is welded on inner wall of oil tank through opening.
Described magnetic shield bar is wrapped up it is ensured that bar shaped magnetic shield surrounding occurs without wedge angle by paper groove and cardboard from inside to outside
Electrode, and pass through no latitude glass tape colligation.
On described magnetic shield bar, one end is provided with ground strip and is grounded by bolt on inner wall of oil tank.
Described bar shaped magnetic shield is formed around rustless steel round steel and rustless steel round steel is passed through pin and welded with inner wall of oil tank,
Carry out corner shielding.
Described l type copper coin is welded with copper strips, and copper strips internal package has glue stick, ensures l type copper coin using glue stick elasticity
Reliable contacts after lower section is installed on the transformer, it is to avoid transformator saves connecting bolt and case along appearance up and down because of leakage field concentration of local
The problems of excessive heat producing.
It is provided with least one of which insulating barrier between described magnetic shield bar and transformer body, prevent from becoming for improving electric field
Shelf depreciation in depressor.
Described insulating barrier passes through insulated bolt and at least one insulating nut is layered, and is welded in oil tank of transformer
On wall.
Described lobe of the lung type magnetic shield is divided into tri- kinds of thickness of 50mm, 65mm and 80mm according to transformer capacity difference.
Can effectively solving inside transformer hardware hot-spot and oil tank of transformer and up and down by the present invention
Section connecting bolt hot-spot problem.
Brief description
Fig. 1 is lobe of the lung type magnetic shield schematic diagram；
Fig. 2 is copper shield and bar shaped magnetic shield schematic diagram；
Fig. 3 is bar shaped magnetic shield connection diagram；
Fig. 4 is magnetic shield bar connection diagram；
Fig. 5 is l type copper coin schematic diagram；
Fig. 6 is insulating barrier schematic diagram.
Wherein, 1, lobe of the lung type magnetic shield, 2, oil tank of transformer, 3, magnetic shield bar, 4, copper shield, 5, bent plate, 6, round steel, 7,
Ground strip, 8, pin, 9, paper groove, 10, cardboard, 11, l type copper coin, 12, glue stick, 13, copper strips, 14, case edge, 15, insulating barrier,
16th, insulating nut, 17, insulated bolt.
Specific embodiment
As described in Figure 1, it is arranged at the lobe of the lung type magnetic shield 1 in the iron yoke cushion block of transformer body upper and lower end, lobe of the lung type magnetic
Shielding 1 is divided into tri- kinds of thickness of 50mm, 65mm and 80mm according to transformer capacity difference.
As described in Fig. 2 Fig. 4, the 6mm copper shield 4 that is arranged on oil tank of transformer 2 inwall and be layed in copper shield 4 respectively
The bar shaped magnetic shield that upper and lower ends are made up of at least one magnetic shield bar 3, magnetic shield bar 3 is layed in by the bent plate 5 of its surrounding
Copper shield 4 surface, copper shield 4 is provided with opening, and bent plate 5 is welded on inner wall of oil tank through opening, and magnetic shield bar 3 is from inside to outside
Wrapped up by 0.5mm paper groove 9 and 1mm cardboard 10, and pass through no latitude glass tape colligation, on magnetic shield bar 3, one end is provided with ground connection
Piece 7 and being grounded by bolt on inner wall of oil tank, bar shaped magnetic shield is formed around rustless steel round steel 6 and rustless steel round steel 6 passes through
Pin 8 and inner wall of oil tank welding.
As described in Figure 5, be arranged at the l type 2mm copper coin 11 that lower box is connected along at 14 with copper shield 4, l type copper coin 11 with
0.5mm copper strips 13 welds, and copper strips 13 internal package has φ 12 glue stick 12.
As described in Figure 6, it is provided with two-layer 3mm insulating barrier 15 between magnetic shield bar 3 and transformer body, insulating barrier 15 leads to
Cross insulated bolt 17 and three insulating nuts 16 are divided into two-layer, and be welded on oil tank of transformer 2 inwall.
Claims (9)
1. a kind of control leakage field transformator it is characterised in that: include be arranged in the iron yoke cushion block of transformer body upper and lower end
Lobe of the lung type magnetic shield (1), the copper shield (4) being arranged on oil tank of transformer (2) inwall and being layed in respectively in copper shield (4)
Bar shaped magnetic shield that lower two ends are made up of at least one magnetic shield bar (3) and be arranged at upper lower box along (14) place and copper shield
(4) l type copper coin (11) connecting.
2. a kind of transformator controlling leakage field according to claim 1 it is characterised in that: described magnetic shield bar (3) leads to
The bent plate (5) crossing its surrounding is layed in copper shield (4) surface, and copper shield (4) is provided with opening, and bent plate (5) passes through opening to weld
On inner wall of oil tank.
3. according to claim 1 a kind of control leakage field transformator it is characterised in that: described magnetic shield bar (3) by
Pass through paper groove (9) and cardboard (10) parcel from inside to outside, and pass through no latitude glass tape colligation.
4. according to claim 1 a kind of control leakage field transformator it is characterised in that: on described magnetic shield bar (3)
One end is provided with ground strip (7) and is grounded by bolt on inner wall of oil tank.
5. according to claim 1 a kind of control leakage field transformator it is characterised in that: described bar shaped magnetic shield surrounding
It is provided with rustless steel round steel (6) and rustless steel round steel (6) is passed through pin (8) and welded with inner wall of oil tank.
6. a kind of transformator controlling leakage field according to claim 1 it is characterised in that: described l type copper coin (11) with
Copper strips (13) welds, and copper strips (13) internal package has glue stick (12).
7. a kind of transformator controlling leakage field according to claim 1 it is characterised in that: described magnetic shield bar (3) with
It is provided with least one of which insulating barrier (15) between transformer body.
8. a kind of transformator controlling leakage field according to claim 7 it is characterised in that: described insulating barrier (15) leads to
Cross insulated bolt (17) and at least one insulating nut (16) layering, and be welded on oil tank of transformer (2) inwall.
9. according to claim 1 a kind of control leakage field transformator it is characterised in that: described lobe of the lung type magnetic shield
(1) tri- kinds of thickness of 50mm, 65mm and 80mm are divided into according to transformer capacity difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610944063.1A CN106373762B (en) | 2016-10-26 | 2016-10-26 | A kind of transformer controlling leakage field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610944063.1A CN106373762B (en) | 2016-10-26 | 2016-10-26 | A kind of transformer controlling leakage field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106373762A true CN106373762A (en) | 2017-02-01 |
| CN106373762B CN106373762B (en) | 2019-02-22 |
Family
ID=57893405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610944063.1A Active CN106373762B (en) | 2016-10-26 | 2016-10-26 | A kind of transformer controlling leakage field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106373762B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978436A (en) * | 2017-12-26 | 2018-05-01 | 吴江变压器有限公司 | A kind of transformer body insulating compressing structure |
| CN110085403A (en) * | 2019-05-21 | 2019-08-02 | 保定天威保变电气股份有限公司 | A kind of transformer three-limb core end magnet shielding structure and its method for shielding |
| CN110085403B (en) * | 2019-05-21 | 2024-04-26 | 保定天威保变电气股份有限公司 | Magnetic shielding structure and magnetic shielding method for end part of three-post iron core of transformer |
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| JPH1126262A (en) * | 1997-07-03 | 1999-01-29 | Hitachi Ltd | Stationary induction electric apparatus |
| CN201562564U (en) * | 2009-10-29 | 2010-08-25 | 保定天威集团有限公司 | Connection structure for upper and lower electric shields of large transformer |
| CN201898022U (en) * | 2010-12-01 | 2011-07-13 | 中电电气(江苏)股份有限公司 | Magnetic shielding structure of high-capacity transformer |
| CN102376423A (en) * | 2011-11-26 | 2012-03-14 | 山东电力设备有限公司 | Shield structure of transformer oil tank and mounting method thereof |
| 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 |
| CN203617105U (en) * | 2013-12-25 | 2014-05-28 | 保定天威保变电气股份有限公司 | Magnetic-shielding external grounding structure of transformer oil tank |
| CN203746634U (en) * | 2014-02-21 | 2014-07-30 | 天威保变(合肥)变压器有限公司 | Vertical magnetic shielding structure |
| CN105428044A (en) * | 2015-12-28 | 2016-03-23 | 保定天威保变电气股份有限公司 | Lung-shaped shield stacking technology for transformer |
| CN206179666U (en) * | 2016-10-26 | 2017-05-17 | 山东电力设备有限公司 | Transformer of control magnetic leakage |
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2016
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| JPS55118615A (en) * | 1979-03-06 | 1980-09-11 | Toshiba Corp | Inductive electric apparatus |
| JPH1126262A (en) * | 1997-07-03 | 1999-01-29 | Hitachi Ltd | Stationary induction electric apparatus |
| CN201562564U (en) * | 2009-10-29 | 2010-08-25 | 保定天威集团有限公司 | Connection structure for upper and lower electric shields of large transformer |
| CN201898022U (en) * | 2010-12-01 | 2011-07-13 | 中电电气(江苏)股份有限公司 | Magnetic shielding structure of high-capacity transformer |
| CN102376423A (en) * | 2011-11-26 | 2012-03-14 | 山东电力设备有限公司 | Shield structure of transformer oil tank and mounting method thereof |
| 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 |
| CN203617105U (en) * | 2013-12-25 | 2014-05-28 | 保定天威保变电气股份有限公司 | Magnetic-shielding external grounding structure of transformer oil tank |
| CN203746634U (en) * | 2014-02-21 | 2014-07-30 | 天威保变(合肥)变压器有限公司 | Vertical magnetic shielding structure |
| CN105428044A (en) * | 2015-12-28 | 2016-03-23 | 保定天威保变电气股份有限公司 | Lung-shaped shield stacking technology for transformer |
| CN206179666U (en) * | 2016-10-26 | 2017-05-17 | 山东电力设备有限公司 | Transformer of control magnetic leakage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978436A (en) * | 2017-12-26 | 2018-05-01 | 吴江变压器有限公司 | A kind of transformer body insulating compressing structure |
| CN110085403A (en) * | 2019-05-21 | 2019-08-02 | 保定天威保变电气股份有限公司 | A kind of transformer three-limb core end magnet shielding structure and its method for shielding |
| CN110085403B (en) * | 2019-05-21 | 2024-04-26 | 保定天威保变电气股份有限公司 | Magnetic shielding structure and magnetic shielding method for end part of three-post iron core of transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106373762B (en) | 2019-02-22 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20180723 Address after: 250109 Lu Yixi, 2, No. 35 Road, Sun Village, Ji'nan high tech Zone, Shandong. Applicant after: Shandong power transmission and Transformation Equipment Co., Ltd. Applicant after: STATE GRID JIANGXI ELECTRIC POWER COMPANY Address before: 250022 No. 3, No. 1 West Road, machine No. 1, Shizhong District, Ji'nan, Shandong Applicant before: Shandong Power Equipment Company Applicant before: STATE GRID JIANGXI ELECTRIC POWER COMPANY |
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