CN106057440A - Local-overheating cooling device for end portion of dry type transformer winding - Google Patents
Local-overheating cooling device for end portion of dry type transformer winding Download PDFInfo
- Publication number
- CN106057440A CN106057440A CN201610577597.5A CN201610577597A CN106057440A CN 106057440 A CN106057440 A CN 106057440A CN 201610577597 A CN201610577597 A CN 201610577597A CN 106057440 A CN106057440 A CN 106057440A
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- China
- Prior art keywords
- circular
- ventilator
- semi
- silicon steel
- supporting plate
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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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- 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
- H01F27/085—Cooling by ambient air
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention relates to a local-overheating cooling device for an end portion of a dry type transformer winding. With the device, a technical problem of local over heating of the end portion of the transformer winding can be solved. The cooling device comprises a ventilator; and an air outlet is formed in the inner side of the ventilator. The ventilator, flat-top trapezoidal vertical type cylindrical silicon steel blocks (11) arranged at intervals along the peripheral, and inclined-top trapezoidal horizontal type cylindrical silicon steel blocks (12) arranged at intervals along the peripheral are arranged between an annular base support plate and an annular top plate. A magnetic shielding inner groove (13) is formed between the inner side surface of one flat-top trapezoidal vertical type cylindrical silicon steel blocks (11) and each two adjacent inclined-top trapezoidal horizontal type cylindrical silicon steel blocks (12); and a wedge-shaped ventilating groove (14) is formed between the top surface of one inclined-top trapezoidal horizontal type cylindrical silicon steel blocks (12) and each two adjacent flat-top trapezoidal vertical type cylindrical silicon steel blocks (11). With the local-overheating cooling device, a conflict between omnibearing overheating preventing of the three-dimensional space and inconvenient heat radiation caused by vertical type dense accumulation can be eliminated. For the air cooling channel arranged at the end portion, a problem of easy local overheating at the end portion of the winding can be solved.
Description
Technical field
The present invention relates to the chiller of a kind of transformator, particularly to a kind of dry-type transformer winding overhang hot-spot
Chiller.
Background technology
Transformator is in operation, and when especially the capacity of transformator is bigger, winding overhang is connected with iron yoke in iron core column
Corner magnetic secret meeting is relatively big, and leakage magnetic flux also can be more, and leakage magnetic flux not only can cause whirlpool by the arm-tie of winding overhang and folder
Stream loss, but also eddy-current loss can be caused by contamination thing near support member or corner, therefore, at this, easily cause local to send out
Hot stall.Existing dry type air cooling method is to carry out cold by air cooling system to the coil windings of transformator especially transformator
But, but little to above-mentioned hot-spot phenomenon effect.At present, also have and Transformer Winding end is taked local magnetic shield arrange
It is overheated to execute prevention, but owing to the shielding vertical dense accumulation of material is in winding overhang, can affect its heat radiation, can cause the most on the contrary
Bigger eddy-current loss, shields, although so can reduce shielding so forming debris shield face, bottom surface frequently with stalloy
Leakage magnetic flux outside face, but in the whole solid space of the Transformer Winding end (especially around corner) within ground plane still
The overheated hidden danger of leakage field can be there is.
Summary of the invention
The invention provides a kind of dry-type transformer winding overhang hot-spot chiller, solve Transformer Winding end
The technical problem of portion's hot-spot.
The present invention is to solve above technical problem by the following technical programs:
A kind of dry-type transformer winding overhang hot-spot chiller, including dry-type transformer winding iron core, in dry type transformation
The root of device winding iron core connects iron yoke, is connected with left half in the root of dry-type transformer winding iron core and the junction of iron yoke
Annular supporting plate and right semi-circular supporting plate, left semi-circular supporting plate and right semi-circular supporting plate are spliced into a ring-type anchor ear, at left semi-circular
It is provided with left semi-circular ventilator on the cylindrical of supporting plate, the cylindrical of right semi-circular supporting plate is provided with right semi-circular ventilator,
The medial surface of left semi-circular ventilator is provided with air outlet inside left semi-circular ventilator, in right semi-circular ventilator
It is provided with air outlet inside right semi-circular ventilator on side, the inner circle of left semi-circular supporting plate has been positioned apart from flat-top ladder
Shape vertical type columnar silicon steel block, is provided with the trapezoidal horizontal columnar silicon of oblique top between two adjacent flat-top trapezoidal vertical type columnar silicon steel blocks
Bloom, is provided with left semi-circular top board on the end face of left semi-circular ventilator, arranges on the end face of right semi-circular ventilator
There is right semi-circular top board, at medial surface and the two adjacent trapezoidal horizontal column silicon steel of oblique top of flat-top trapezoidal vertical type columnar silicon steel block
Being provided with magnetic shield inner groovy between block, the flat-top adjacent at the end face of the trapezoidal horizontal columnar silicon bloom of oblique top and two is trapezoidal vertical
Wedge ventilation groove it is provided with between columnar silicon bloom.
The air intake vent of left semi-circular ventilator and the air intake vent of right semi-circular ventilator connect and has aerator.
The present invention is by arranging spaced cuboid silicon steel bar at dry-type transformer winding overhang, playing in three-dimensional
Solid space not only shields leakage field but also increase the effect of heat radiation, solves the comprehensive prevention of three-dimensional space overheated and vertical intensive
Accumulation can cause the contradiction being unfavorable for heat radiation.Simultaneously by being specifically designed for the air-cooled passage of end, efficiently solve winding terminal
The difficult problem that local, portion is the most overheated.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the fiting relation figure of the present invention and dry-type transformer iron core.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings:
A kind of dry-type transformer winding overhang hot-spot chiller, including dry-type transformer winding iron core 1, in dry type transformation
The root of device winding iron core 1 connects iron yoke 2, is connected with the junction of iron yoke 2 at the root of dry-type transformer winding iron core 1
Left semi-circular supporting plate 3 and right semi-circular supporting plate 4, left semi-circular supporting plate 3 is spliced into a ring-type anchor ear with right semi-circular supporting plate 4,
It is provided with left semi-circular ventilator 7 on the cylindrical of left semi-circular supporting plate 3, the cylindrical of right semi-circular supporting plate 4 is provided with right half
Loop vent cylinder 8, is provided with air outlet 9 inside left semi-circular ventilator on the medial surface of left semi-circular ventilator 7, on the right side partly
Air outlet 10 inside right semi-circular ventilator it is provided with, in the inner circle of left semi-circular supporting plate 3 on the medial surface of loop vent cylinder 8
It is positioned apart from flat-top trapezoidal vertical type columnar silicon steel block 11, has set between two adjacent flat-top trapezoidal vertical type columnar silicon steel blocks 11
It is equipped with the trapezoidal horizontal columnar silicon bloom 12 of oblique top, the end face of left semi-circular ventilator 7 is provided with left semi-circular top board 5,
Right semi-circular top board 6 it is provided with, at the medial surface of flat-top trapezoidal vertical type columnar silicon steel block 11 on the end face of right semi-circular ventilator 8
It is provided with magnetic shield inner groovy 13, in the trapezoidal horizontal column of oblique top between the trapezoidal horizontal columnar silicon bloom 12 of the oblique top adjacent with two
It is provided with wedge ventilation groove 14 between the end face of silicon steel block 12 and two adjacent flat-top trapezoidal vertical type columnar silicon steel blocks 11.
The air intake vent of left semi-circular ventilator 7 and the air intake vent of right semi-circular ventilator 8 connect and has aerator.
Remote transformer core end is low for nearly transformer core end is high for the upper end face of the trapezoidal horizontal columnar silicon bloom 12 of oblique top
Oblique section, inclined-plane and horizontal plane angle scope are 25 °-30 °, have both decreased vertical direction and level at nearly transformer core
Direction leakage field enters the probability of end structural member, after vertical type columnar silicon steel block 11 trapezoidal with flat-top is spaced, integral surface
Long-pending increase, increases area of dissipation.The height of flat-top trapezoidal vertical type columnar silicon steel block 11 and the trapezoidal horizontal columnar silicon bloom of oblique top
The height of the highest point of 12 is identical.Left semi-circular supporting plate 3 and right semi-circular supporting plate 4 form annular backing board, left semi-circular top board 5
Annular roof plate is formed, magnetic shield inner groovy 13 set between annular backing board and annular roof plate with right semi-circular top board 6
Increase effectively area of dissipation, wedge ventilation groove 14 set between annular backing board and annular roof plate increase effectively
Area of dissipation.Annular backing board and annular roof plate are the steel disc of low magnetic conduction surface insulation.
Claims (2)
1. a dry-type transformer winding overhang hot-spot chiller, including dry-type transformer winding iron core (1), in dry type
The root of Transformer Winding iron core (1) connects iron yoke (2), it is characterised in that at the root of dry-type transformer winding iron core (1)
It is connected with left semi-circular supporting plate (3) and right semi-circular supporting plate (4), left semi-circular supporting plate (3) and right half with the junction of iron yoke (2)
Annular supporting plate (4) is spliced into a ring-type anchor ear, is provided with left semi-circular ventilator (7) on the cylindrical of left semi-circular supporting plate (3),
The cylindrical of right semi-circular supporting plate (4) is provided with right semi-circular ventilator (8), at the medial surface of left semi-circular ventilator (7)
On be provided with air outlet (9) inside left semi-circular ventilator, the medial surface of right semi-circular ventilator (8) is provided with right semi-ring
Air outlet (10) inside shape ventilator, have been positioned apart from the trapezoidal vertical type columnar of flat-top in the inner circle of left semi-circular supporting plate (3)
Silicon steel block (11), is provided with the trapezoidal horizontal column silicon steel of oblique top between two adjacent flat-tops trapezoidal vertical type columnar silicon steel block (11)
Block (12), is provided with left semi-circular top board (5), right semi-circular ventilator (8) on the end face of left semi-circular ventilator (7)
Right semi-circular top board (6) it is provided with, at adjacent oblique of the medial surface of flat-top trapezoidal vertical type columnar silicon steel block (11) and two on end face
Push up and be provided with magnetic shield inner groovy (13) between trapezoidal horizontal columnar silicon bloom (12), at the trapezoidal horizontal columnar silicon bloom of oblique top
(12) it is provided with wedge ventilation groove (14) between end face and two adjacent flat-tops trapezoidal vertical type columnar silicon steel block (11).
A kind of dry-type transformer winding overhang hot-spot chiller the most according to claim 1, it is characterised in that
Connect on the air intake vent of left semi-circular ventilator (7) and the air intake vent of right semi-circular ventilator (8) and have aerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577597.5A CN106057440B (en) | 2016-07-21 | 2016-07-21 | A kind of dry-type transformer winding overhang hot-spot cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577597.5A CN106057440B (en) | 2016-07-21 | 2016-07-21 | A kind of dry-type transformer winding overhang hot-spot cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106057440A true CN106057440A (en) | 2016-10-26 |
| CN106057440B CN106057440B (en) | 2017-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610577597.5A Active CN106057440B (en) | 2016-07-21 | 2016-07-21 | A kind of dry-type transformer winding overhang hot-spot cooling device |
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| CN (1) | CN106057440B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516589A (en) * | 2017-10-02 | 2017-12-26 | 国网山西省电力公司电力科学研究院 | Anti- the overheat magnetic shielding device and method for shielding of a kind of Transformer Winding end |
| US11915850B2 (en) | 2017-12-20 | 2024-02-27 | Applied Materials, Inc. | Two channel cosine-theta coil assembly |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08195315A (en) * | 1995-01-13 | 1996-07-30 | Meidensha Corp | Air-cooled stationary induction apparatus |
| JPH11176651A (en) * | 1997-12-11 | 1999-07-02 | Hitachi Ltd | Static induction electric apparatus |
| CN201383405Y (en) * | 2008-10-20 | 2010-01-13 | 保定天威集团有限公司 | Cooling device for dry-type transformer |
| JP4882853B2 (en) * | 2007-04-27 | 2012-02-22 | 株式会社明電舎 | Air-cooled transformer board |
| CN202996501U (en) * | 2012-12-29 | 2013-06-12 | 江苏中联电气股份有限公司 | Dry-type transformer cooling system for mining |
| CN104303399A (en) * | 2012-05-17 | 2015-01-21 | 埃尔瓦有限公司 | Electrical device with emergency cooling system |
| CN105469953A (en) * | 2016-01-13 | 2016-04-06 | 王丹 | Novel power transformer |
| CN105788828A (en) * | 2016-05-23 | 2016-07-20 | 江苏中容科技有限公司 | Insulation and heat dissipation device for high-voltage and low-voltage coils |
| CN205862956U (en) * | 2016-07-21 | 2017-01-04 | 国网山西省电力公司电力科学研究院 | A kind of dry-type transformer winding overhang hot-spot chiller |
-
2016
- 2016-07-21 CN CN201610577597.5A patent/CN106057440B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08195315A (en) * | 1995-01-13 | 1996-07-30 | Meidensha Corp | Air-cooled stationary induction apparatus |
| JPH11176651A (en) * | 1997-12-11 | 1999-07-02 | Hitachi Ltd | Static induction electric apparatus |
| JP4882853B2 (en) * | 2007-04-27 | 2012-02-22 | 株式会社明電舎 | Air-cooled transformer board |
| CN201383405Y (en) * | 2008-10-20 | 2010-01-13 | 保定天威集团有限公司 | Cooling device for dry-type transformer |
| CN104303399A (en) * | 2012-05-17 | 2015-01-21 | 埃尔瓦有限公司 | Electrical device with emergency cooling system |
| CN202996501U (en) * | 2012-12-29 | 2013-06-12 | 江苏中联电气股份有限公司 | Dry-type transformer cooling system for mining |
| CN105469953A (en) * | 2016-01-13 | 2016-04-06 | 王丹 | Novel power transformer |
| CN105788828A (en) * | 2016-05-23 | 2016-07-20 | 江苏中容科技有限公司 | Insulation and heat dissipation device for high-voltage and low-voltage coils |
| CN205862956U (en) * | 2016-07-21 | 2017-01-04 | 国网山西省电力公司电力科学研究院 | A kind of dry-type transformer winding overhang hot-spot chiller |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516589A (en) * | 2017-10-02 | 2017-12-26 | 国网山西省电力公司电力科学研究院 | Anti- the overheat magnetic shielding device and method for shielding of a kind of Transformer Winding end |
| CN107516589B (en) * | 2017-10-02 | 2019-04-16 | 国网山西省电力公司电力科学研究院 | A kind of anti-overheat magnetic shielding device and method for shielding of transformer winding end |
| US11915850B2 (en) | 2017-12-20 | 2024-02-27 | Applied Materials, Inc. | Two channel cosine-theta coil assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106057440B (en) | 2017-09-26 |
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