CN106373762B - A kind of transformer controlling leakage field - Google Patents
A kind of transformer controlling leakage field Download PDFInfo
- Publication number
- CN106373762B CN106373762B CN201610944063.1A CN201610944063A CN106373762B CN 106373762 B CN106373762 B CN 106373762B CN 201610944063 A CN201610944063 A CN 201610944063A CN 106373762 B CN106373762 B CN 106373762B
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- Prior art keywords
- transformer
- magnetic screen
- copper
- oil tank
- leakage field
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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
A kind of transformer controlling leakage field including the lobe of the lung type magnetic screen being set in the upper and lower end iron yoke cushion block of transformer body, the copper shield being set on transformer oil chamber interior wall and is layed in bar shaped magnetic screen that copper shield upper and lower ends are made of at least one magnetic screen item respectively and is set to the L-type copper sheet that upper lower box connect at copper shield.Inside transformer hardware hot-spot and oil tank of transformer and up and down section connection bolt hot-spot can be effectively solved the problems, such as through the invention.
Description
Technical field
The present invention relates to transformer manufacturing field more particularly to a kind of transformers for controlling leakage field.
Background technique
As electric system develops to super extra-high voltage, large capacity, remote direction, large capacity 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, generates additional damage
It consumes and causes inside transformer hardware local pyrexia, if temperature is excessively high, will accelerate to contact oily aging.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 analysis of oil,
Transformer is influenced to operate normally.In addition, the leakage field of high-power transformer, which is connected with, greatly forms closure magnetic force by fuel tank
Circuit causes transformer box wall to overheat.With the increase of leakage field, transformer saves up and down generates a large amount of vortex inside connection bolt
Loss and magnetic hystersis loss cause hot-spot, and this phenomenon is all the more obvious with the increase of transformer single-column capacity.Cause
How this carries out leakage field control to high-power transformer, and avoiding the occurrence of hot-spot phenomenon is current art difficulties.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of transformer for controlling leakage field.
To solve the above problems, the technical scheme adopted by the invention is as follows: a kind of transformer controlling leakage field, including be set to
Lobe of the lung type magnetic screen in the upper and lower end iron yoke cushion block of transformer body, the copper shield being set on transformer oil chamber interior wall and
It is layed in the bar shaped magnetic screen and be set to upper lower box that copper shield upper and lower ends are made of at least one magnetic screen item respectively
The L-type copper sheet being connect at copper shield.
The magnetic screen of lobe of the lung type can solve the problems, such as inside transformer hardware hot-spot, copper shield, bar shaped magnetic screen
Oil tank of transformer and up and down section connection bolt hot-spot can be solved the problems, such as with L-type copper sheet.
The magnetic screen item is layed in copper shield surface by the bent plate of its surrounding, and copper shield is equipped with opening, bent plate
It is welded on inner wall of oil tank across opening.
The magnetic screen item passes through paper groove and cardboard package from inside to outside, guarantees that wedge angle does not occur in bar shaped magnetic screen surrounding
Electrode, and bound by no latitude glass tape.
One end is equipped with ground strip and is grounded on inner wall of oil tank by bolt on the magnetic screen item.
The bar shaped magnetic screen is surrounded by stainless steel round steel and stainless steel round steel is welded by pin and inner wall of oil tank,
Carry out corner shielding.
The L-type copper sheet and copper strips welds, and glue stick is enclosed with inside copper strips, guarantees L-type copper sheet using glue stick elasticity
Reliable contacts after lower section is installed on the transformer avoid transformer from saving connection bolt and case up and down along appearance because of leakage field concentration of local
The problems of excessive heat of generation.
It is equipped at least one layer of insulating barrier between the magnetic screen item and transformer body, prevents from becoming for improving electric field
There is shelf depreciation in depressor.
The insulating barrier is layered by insulated bolt and at least one insulating nut, and is welded in oil tank of transformer
On wall.
The lobe of the lung type magnetic screen is divided into tri- kinds of thickness of 50mm, 65mm and 80mm according to transformer capacity difference.
Can effectively solve through the invention inside transformer hardware hot-spot and oil tank of transformer and up and down
Section connection bolt hot-spot problem.
Detailed description of the invention
Fig. 1 is lobe of the lung type magnetic screen schematic diagram；
Fig. 2 is copper shield and bar shaped magnetic screen schematic diagram；
Fig. 3 is bar shaped magnetic screen connection schematic diagram；
Fig. 4 is magnetic screen connection schematic diagram；
Fig. 5 is L-type copper sheet schematic diagram；
Fig. 6 is insulating barrier schematic diagram.
Wherein, 1, lobe of the lung type magnetic screen, 2, oil tank of transformer, 3, magnetic screen item, 4, copper shield, 5, bent plate, 6, round steel, 7,
Ground strip, 8, pin, 9, paper groove, 10, cardboard, 11, L-type copper sheet, 12, glue stick, 13, copper strips, 14, case edge, 15, insulating barrier,
16, insulating nut, 17, insulated bolt.
Specific embodiment
As described in Figure 1, the lobe of the lung type magnetic screen 1 being set in the upper and lower end iron yoke cushion block of transformer body, 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 set on 2 inner wall of oil tank of transformer and it is layed in copper shield 4 respectively
The bar shaped magnetic screen that upper and lower ends are made of at least one magnetic screen item 3, magnetic screen item 3 are layed in by the bent plate 5 of its surrounding
4 surface of copper shield, copper shield 4 are equipped with opening, and bent plate 5 passes through opening and is welded on inner wall of oil tank, and magnetic screen item 3 is from inside to outside
It is wrapped up by 0.5mm paper groove 9 and 1mm cardboard 10, and is bound by no latitude glass tape, one end is equipped with ground connection on magnetic screen item 3
Piece 7 and on inner wall of oil tank by bolt be grounded, bar shaped magnetic screen is surrounded by stainless steel round steel 6 and stainless steel round steel 6 passes through
Pin 8 and inner wall of oil tank weld.
As described in Figure 5, be set to the L-type 2mm copper sheet 11 that lower box is connect at 14 with copper shield 4, L-type copper sheet 11 with
0.5mm copper strips 13 welds, and 12 glue stick 12 of Φ is enclosed with inside copper strips 13.
As described in Figure 6, two layers of 3mm insulating barrier 15 is equipped between magnetic screen item 3 and transformer body, insulating barrier 15 is logical
Cross insulated bolt 17 and three insulating nuts 16 to divide be two layers, and be welded on 2 inner wall of oil tank of transformer.
Claims (5)
1. a kind of transformer for controlling leakage field, it is characterised in that: including being set in the upper and lower end iron yoke cushion block of transformer body
Lobe of the lung type magnetic screen (1), the copper shield (4) that is set on oil tank of transformer (2) inner wall and be layed on copper shield (4) respectively
Bar shaped magnetic screen that lower both ends are made of at least one magnetic screen item (3) and upper lower box is set at (14) and copper shield
(4) the L-type copper sheet (11) connected, the magnetic screen item (3) are layed in copper shield (4) surface by the bent plate (5) of its surrounding,
Copper shield (4) is equipped with opening, and bent plate (5) passes through opening and is welded on inner wall of oil tank；The bar shaped magnetic screen is surrounded by
Stainless steel round steel (6) and stainless steel round steel (6) pass through pin (8) and inner wall of oil tank welds；The magnetic screen item (3) and transformation
At least one layer of insulating barrier (15) is equipped between device body；The insulating barrier (15) passes through insulated bolt (17) and at least one
A insulating nut (16) is longitudinal layered, and is welded on oil tank of transformer (2) inner wall.
2. it is according to claim 1 it is a kind of control leakage field transformer, it is characterised in that: the magnetic screen item (3) by
It is wrapped up by paper groove (9) and cardboard (10), and is bound by no latitude glass tape from inside to outside.
3. a kind of transformer for controlling leakage field according to claim 1, it is characterised in that: on the magnetic screen item (3)
One end is equipped with ground strip (7) and is grounded on inner wall of oil tank by bolt.
4. a kind of transformer for controlling leakage field according to claim 1, it is characterised in that: the L-type copper sheet (11) with
Copper strips (13) welding, and glue stick (12) are enclosed with inside copper strips (13).
5. a kind of transformer for controlling leakage field according to claim 1, it is characterised in that: the lobe of the lung type magnetic screen
(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 CN106373762A (en) | 2017-02-01 |
| CN106373762B true CN106373762B (en) | 2019-02-22 |
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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 |
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| CN (1) | CN106373762B (en) |
Families Citing this family (2)
| 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 |
| 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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| 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 |
| 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 |
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| 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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| 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 |
| 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 |
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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 |
| 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 |
| 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 |
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| CN106373762A (en) | 2017-02-01 |
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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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