CN106449041A - Three-phase three-dimensional laminated iron core, three-phase three-dimensional laminated iron core-based power transformer and assembling method - Google Patents
Three-phase three-dimensional laminated iron core, three-phase three-dimensional laminated iron core-based power transformer and assembling method Download PDFInfo
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- CN106449041A CN106449041A CN201610809368.1A CN201610809368A CN106449041A CN 106449041 A CN106449041 A CN 106449041A CN 201610809368 A CN201610809368 A CN 201610809368A CN 106449041 A CN106449041 A CN 106449041A
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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
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
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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
- H01F27/24—Magnetic cores
-
- 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
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention relates to a three-phase three-dimensional laminated iron core, a three-phase three-dimensional laminated iron core-based power transformer and an assembling method. An iron core has three vertically-placed square-shaped iron core laminated sheet structures with the same structure; the cross section of the vertical core column part of each square-shaped structure is semicircular; the square-shaped structure is formed by multiple layers of square-shaped iron core sheets in a laminating manner; the square-shaped iron core sheets in each layer are positioned on the same plane, and a stepping structure is adopted between single layers or between multiple layers; the three adjacent square-shaped iron core laminated sheet structures are butt jointed two by two to form a three-phase three-dimensional laminated iron core structure which has three iron core columns having circular cross sections; the transformer is formed as follows: the exterior of the core column of each phase of the three-dimensional laminated iron core is sleeved with a hollow cylindrical transformer coil; and a three-phase integration pressing apparatus is arranged on each of the upper and lower end parts of the transformer coil separately. Compared with a three-dimensional reeled iron core transformer coil, the transformer coil provided by the invention is more convenient to wind, and a large amount of equipment cost is reduced; meanwhile, the capacity is not limited by limitation from reeled iron core equipment or coil winding equipment; and furthermore, the square-shaped structure of the transformer iron core is firm in structure, so that a practical value is achieved.
Description
Technical field
The present invention relates to Transformer Manufacturing Technology, specifically a kind of three-phase solid laminated core, three-phase solid laminated core
Power transformer and assembly method.
Background technology
At present, three-dimensional reel iron core transformer is widely used in the manufacture of distribution transformer, and volume iron core is originally in during coiling
Need special winding equipment, increase with transformer capacity, the requirement to winding equipment also accordingly increases, therefore transformer capacity
It is restricted.Because three-dimensional winding iron core is closed configuration, coil needs on iron core coiling in addition it is also necessary to the tooling device of complexity,
And coil is difficult with iron core stretching, causes transformator anti-short circuit capability to decline to a great extent.Iron core corner location is arc-shaped structure,
Lead to coil compression difficult, transformator anti-short circuit capability also can be made to decline.
Meanwhile, increase with transformer capacity, the requirement to coil winding equipment also can accordingly increase, therefore transformator holds
Amount is restricted.
The coil of the every kind of specification of three-dimensional reel iron core transformer is required to configure the tooling device of different model, transformator optimization
Original tooling device will be idle afterwards, causes huge waste.
Chinese invention patent (97105166.6) discloses a kind of three-balanced-weight three-junction transformer, adopts between its stalloy yoke and post
With docking mode, loosely organized, iron core overlapping process is extremely complex, needs lower yoke and post with paint (glue) such as in lamination
Stick to one, then after a series of consolidation process, also need into stove dry solidification, carry out again after cooling respectively post and yoke being carried out
Connect simultaneously, manufacture very difficult, practicality is very poor, and manufacturing man-hours is long, and core loss is larger, leads to not popularization and application.
Content of the invention
For transformator in prior art with three-dimensional winding iron core in the fabrication process, complex process, equipment cost is high, coil
Anti-short circuit capability difference and transformer capacity are restricted, and three-balanced-weight three-junction transformer manufactures very difficult, practicality simultaneously
Very poor wait not enough, the technical problem to be solved in the present invention is to provide one kind can improve anti-short circuit capability, iron core that need not be special and
Coil winding equipment, capacity is not limited by winding equipment, and manufacturing process is simple, has the three-phase solid laminated ferrum of practical value
Core, three-phase solid laminated core power transformer and assembly method.
For solving above-mentioned technical problem, the technical solution used in the present invention is：
A kind of three-phase solid laminated core of the present invention, has three vertically placement, structure identical square shape core lamination stack knots
Structure, square shape structural vertical stem portion cross section is semicircle, and square shape structure is made up of multilamellar square shape lamination closed assembly,
Every layer of square shape lamination, all in approximately the same plane, adopts step by step structure between single or multiple lift；Three adjacent square shape iron cores
Lamination docks two-by-two, and it is circular three-phase solid laminated core structure that formation has three iron core column cross sections.
The upper and lower yoke piece width of square shape iron core is equal with corresponding core column sheet width, and upper and lower yoke and post are 45 degree of mitres.
The upper yoke cross section of square shape iron core is asymmetric mountain font, and lower yoke cross section is inverted asymmetric mountain font,
Upper and lower yoke shape of cross section is mirror image relationship.
The upper and lower yoke cross section of square shape iron core is spindle.
Mountain font or fusiform pinnacle are processed as flat-top.
The power transformer of three-phase solid laminated core of the present invention, is set with hollow outside the stem stem of every phase three-phase solid laminated core
Tube transformer coil, is respectively adopted three-phase entirety hold down gag in transformer coil upper and lower end portion.
Three-phase entirety hold down gag includes pressing plate and cushion block, and wherein cushion block is adhered on pressing plate, forms oil duct between cushion block；Pad
Block is abutted against with coil, and pressing plate is passed through folder and compressed with iron yoke.
The assembly method of three-phase solid laminated core power transformer of the present invention, comprises the following steps：
Make three-phase solid laminated core and coil respectively；
Remove the upper yoke part of three-phase solid laminated core；
Place bottom entirety hold down gag；
Three-phase coil is set on the stem stem of three-phase solid laminated core；
Interior loop and iron core pass through stay and the excellent stretching of support；
Place top entirety hold down gag；
Upper yoke is installed, forms the device body of three-phase solid laminated core power transformer；
Complete the assembling of other parts by the assembling mode of three-phase stereo transformator, form three-phase solid laminated core electric power and become
Depressor.
The making of three-phase solid laminated core comprises the following steps：
The lamination of different size is stacked on support mould according to hierarchical order level according to design requirement, forms single mouth
Font lamination；
Each square shape lamination is carried out with binding fix；
Three square shape laminations are stood up, is vertically placed on respectively on lower clamping piece, adjacent square shape core lamination stack knot
Structure docks two-by-two, and it is circular three-phase solid laminated core structure that formation has three iron core column cross sections.
The invention has the advantages that and advantage：
1. the present invention is three-dimensional folded core structure, and iron core is lamination process, and coil is traditional independent winding method, more vertical
Body reel iron core transformer coil winding is convenient, eliminates iron core and coil winding tooling device simultaneously, saves and set in a large number
Standby cost, capacity is no longer subject to roll up iron core equipment and coil winding equipment is limited simultaneously；Transformer core square shape sound construction,
The three-phase stereo structure being formed is highly stable, firm, and manufacturing process is simple, has practical value.
2. the present invention is due to folding core structure, coil consistent with traditional folded core structure mounting coil technique for three-dimensional
Ensured with iron core stretching, also solve coil compression problem simultaneously, improve transformator anti-short circuit capability.
3. the more traditional appendiron core transformer of commonly folding of the present invention saves core material, reduces cost.
4. the Leakage flux distribution of the present invention is better than traditional commonly folded appendiron core transformer, reduces leakage field in folder, fuel tank
Eddy-current loss.
5. the stalloy of yoke up and down of the present invention is vertical placement, relatively ferrum three-dimensional winding iron core structure, the damage being caused by leakage field
Consumption is less, reduces iron yoke hot-spot.
6. transformator whole height of the present invention reduces, thus also reduces shipping height, can subtract for high-power transformer
Few substantial amounts of freight and dismounting take.
Brief description
Fig. 1 is present configuration iron core schematic diagram；
Fig. 2 is iron core schematic top plan view of the present invention；
Fig. 3 is iron core step by step structure schematic diagram of the present invention；
Fig. 4 assemble for iron-core coil of the present invention after schematic diagram；
Fig. 5 is upper and lower yoke cross-sectional view () in the present invention；
Fig. 6 is upper and lower yoke cross-sectional view (two) in the present invention；
Fig. 7 is that schematic diagram placed by tri-phase iron core post of the present invention.
Wherein, 1 is stem stem, and 2 is upper yoke, and 3 is lower yoke, and 4 is coil.
Specific embodiment
As shown in Figure 1, 2, a kind of power transformer of present invention three-phase solid laminated core, has three and vertically places, ties
Structure identical square shape core lamination stack structure, square shape structural vertical stem portion cross section be semicircle, square shape structure by
Multilamellar square shape lamination closed assembly forms, and every layer of square shape lamination, all in approximately the same plane, adopts step between single or multiple lift
Enter structure, as shown in figure 3, structure is very firm after closed assembly.Three adjacent square shape core lamination stack structures are docked two-by-two, form tool
Three iron core column cross sections are had to be circular three-phase solid laminated core structure.
The upper and lower yoke piece width of square shape iron core is equal with corresponding core column sheet width.
The upper yoke cross section of square shape iron core can be asymmetric mountain font, and lower yoke cross section can be inverted asymmetric mountain word
Shape, upper and lower yoke shape of cross section is mirror image relationship, as shown in Figure 5.
Or the upper and lower yoke cross section of square shape iron core is spindle, as shown in Figure 6.
In order to reduce shipping height, mountain font or fusiform pinnacle are processed as flat-top, also save iron core material simultaneously
Material.
The power transformer of three-phase solid laminated core of the present invention, using three-phase solid laminated core as device body agent structure,
It is set with hollow cylinder transformer coil outside the stem stem of every phase three-phase solid laminated core, in transformer coil upper and lower end part
Not Cai Yong three-phase entirety hold down gag, this three-phase entirety hold down gag includes pressing plate and cushion block, and wherein cushion block is adhered on pressing plate,
Form oil duct between cushion block；Cushion block is abutted against with coil, and pressing plate is passed through folder and compressed with iron yoke.This overall hold down gag and tradition
Folded core structure mounting coil technique consistent, compared with reel iron core transformer, coil and iron core stretching are ensured, simultaneously
Also solve coil compression problem, significantly improve the anti-short circuit capability of transformator, three-phase entirety hold down gag makes simple, reduction
Technology difficulty, improves efficiency of assembling.
As shown in figure 4, the three-phase solid laminated core of said structure is applied in the three-phase transformer of 400kVA, its three-phase
Coil can independent coiling, be set with the stem portion of three-dimensional folded iron core again after the completion of coiling, then fold again and plug yoke, this
Inventive structure can three people simultaneously fold plug yoke, installation time can be shortened.
The assembly method of three-phase solid laminated core power transformer of the present invention comprises the following steps：
Make three-phase solid laminated core and coil respectively；
Remove the upper yoke part of three-phase solid laminated core；
Place bottom entirety hold down gag；
Three-phase coil is set on the stem stem of three-phase solid laminated core；
Interior loop and iron core pass through stay and the excellent stretching of support；
Place top entirety hold down gag；
Upper yoke is installed, forms the device body of three-phase solid laminated core power transformer；
Complete the assembling of other parts by the assembling mode of three-phase stereo transformator, form three-phase solid laminated core electric power and become
Depressor.
Wherein, the making of three-phase solid laminated core comprises the following steps：
The lamination of different size is stacked on support mould according to hierarchical order level according to design requirement, forms single mouth
Font lamination；
Each square shape lamination is carried out with binding fix；
Three square shape laminations are stood up, is vertically placed on respectively on lower clamping piece, adjacent square shape core lamination stack knot
Structure docks two-by-two, and it is circular three-phase solid laminated core structure that formation has three iron core column cross sections.Tri-phase iron core post is placed
Schematic diagram is as shown in Figure 7.
The stem portion cross section of each square shape lamination is generally semicircle, and upper and lower yoke cross section can be asymmetric mountain
Mountain font or fusiform pinnacle also can be processed as flat-top by font or spindle.
Three-phase solid laminated core of the present invention is applicable to the power transformer of all size, especially more than 10000kVA
Large-scale power transformer, integrated level is higher, more save space, reduces the structural member eddy-current loss being caused by leakage field, it is to avoid
The generation of hot-spot.
Claims (9)
1. a kind of three-phase solid laminated core it is characterised in that：There are three vertically placement, structure identical square shape core lamination stacks
Structure, square shape structural vertical stem portion cross section is semicircle, and square shape structure is by multilamellar square shape lamination closed assembly group
Become, every layer of square shape lamination, all in approximately the same plane, adopts step by step structure between single or multiple lift；Three adjacent square shape ferrum
Core lamination docks two-by-two, and it is circular three-phase solid laminated core structure that formation has three iron core column cross sections.
2. the three-phase solid laminated core as described in claim 1 it is characterised in that：The upper and lower yoke piece width of square shape iron core with right
The core column sheet's width answered is equal, and upper and lower yoke and post are 45 degree of mitres.
3. the three-phase solid laminated core as described in claim 1 it is characterised in that：The upper yoke cross section of square shape iron core is not right
Claim mountain font, lower yoke cross section is inverted asymmetric mountain font, upper and lower yoke shape of cross section is mirror image relationship.
4. the three-phase solid laminated core as described in claim 1 it is characterised in that：The upper and lower yoke cross section of square shape iron core is
Spindle.
5. the three-phase solid laminated core as described in claim 3 or 4 it is characterised in that：Mountain font or fusiform pinnacle are processed
For flat-top.
6. the three-phase solid laminated core as described in claim 1 power transformer it is characterised in that：In every phase three-phase solid laminated
It is set with hollow cylinder transformer coil outside the stem stem of iron core, be respectively adopted three-phase in transformer coil upper and lower end portion and integrally press
Tight device.
7. the three-phase solid laminated core as described in claim 6 power transformer it is characterised in that：Three-phase entirety hold down gag
Including pressing plate and cushion block, wherein cushion block is adhered on pressing plate, forms oil duct between cushion block；Cushion block is abutted against with coil, and pressing plate passes through
Folder is compressed with iron yoke.
8. the assembly method of the three-phase solid laminated core power transformer as described in claim 6 is it is characterised in that include following
Step：
Make three-phase solid laminated core and coil respectively；
Remove the upper yoke part of three-phase solid laminated core；
Place bottom entirety hold down gag；
Three-phase coil is set on the stem stem of three-phase solid laminated core；
Interior loop and iron core pass through stay and the excellent stretching of support；
Place top entirety hold down gag；
Upper yoke is installed, forms the device body of three-phase solid laminated core power transformer；
Complete the assembling of other parts by the assembling mode of three-phase stereo transformator, form three-phase solid laminated core power transformer
Device.
9. the assembly method of the three-phase solid laminated core power transformer as described in claim 8 is it is characterised in that three-phase stereo
The making of folded iron core comprises the following steps：
The lamination of different size is stacked on support mould according to hierarchical order level according to design requirement, forms single square shape
Lamination；
Each square shape lamination is carried out with binding fix；
Three square shape laminations are stood up, is vertically placed on respectively on lower clamping piece, adjacent square shape core lamination stack structure two
Two docking, it is circular three-phase solid laminated core structure that formation has three iron core column cross sections, and each stem stem is unified again
Colligation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610809368.1A CN106449041A (en) | 2016-09-08 | 2016-09-08 | Three-phase three-dimensional laminated iron core, three-phase three-dimensional laminated iron core-based power transformer and assembling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610809368.1A CN106449041A (en) | 2016-09-08 | 2016-09-08 | Three-phase three-dimensional laminated iron core, three-phase three-dimensional laminated iron core-based power transformer and assembling method |
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| CN106449041A true CN106449041A (en) | 2017-02-22 |
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| CN201610809368.1A Pending CN106449041A (en) | 2016-09-08 | 2016-09-08 | Three-phase three-dimensional laminated iron core, three-phase three-dimensional laminated iron core-based power transformer and assembling method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331495A (en) * | 2017-07-14 | 2017-11-07 | 合肥天威众元电气有限公司 | A kind of three-dimensional grade laminated transformer core of the post of three frame three |
| CN107369534A (en) * | 2017-07-14 | 2017-11-21 | 合肥天威众元电气有限公司 | A kind of three-phase solid laminated core transformer |
| CN109698056A (en) * | 2017-10-20 | 2019-04-30 | 特变电工沈阳变压器集团有限公司 | A kind of three-phase solid laminated core structure |
| CN110556235A (en) * | 2019-10-19 | 2019-12-10 | 北京中热信息科技有限公司 | Star-shaped folding iron core transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2360918Y (en) * | 1998-12-18 | 2000-01-26 | 谢伟民 | Lamination three-dimensional transformer |
| WO2005027155A1 (en) * | 2003-09-17 | 2005-03-24 | Vijai Electricals Limited | A method of making a three-phase transformer with triangular core structure and a three-phase transformer with triangular core structure thereof |
| CN201041769Y (en) * | 2007-04-27 | 2008-03-26 | 黄成峰 | Triangle overlapping solid transformer |
| CN205984634U (en) * | 2016-09-08 | 2017-02-22 | 特变电工股份有限公司 | Three -dimensional iron core, three -dimensional iron core power transformer of folding of three -phase of folding of three -phase |
-
2016
- 2016-09-08 CN CN201610809368.1A patent/CN106449041A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2360918Y (en) * | 1998-12-18 | 2000-01-26 | 谢伟民 | Lamination three-dimensional transformer |
| WO2005027155A1 (en) * | 2003-09-17 | 2005-03-24 | Vijai Electricals Limited | A method of making a three-phase transformer with triangular core structure and a three-phase transformer with triangular core structure thereof |
| CN201041769Y (en) * | 2007-04-27 | 2008-03-26 | 黄成峰 | Triangle overlapping solid transformer |
| CN205984634U (en) * | 2016-09-08 | 2017-02-22 | 特变电工股份有限公司 | Three -dimensional iron core, three -dimensional iron core power transformer of folding of three -phase of folding of three -phase |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331495A (en) * | 2017-07-14 | 2017-11-07 | 合肥天威众元电气有限公司 | A kind of three-dimensional grade laminated transformer core of the post of three frame three |
| CN107369534A (en) * | 2017-07-14 | 2017-11-21 | 合肥天威众元电气有限公司 | A kind of three-phase solid laminated core transformer |
| CN107331495B (en) * | 2017-07-14 | 2024-04-12 | 合肥天威众元电气有限公司 | Three-frame three-column three-dimensional laminated transformer core |
| CN107369534B (en) * | 2017-07-14 | 2024-04-12 | 合肥天威众元电气有限公司 | Three-phase three-dimensional iron core transformer that stacks |
| CN109698056A (en) * | 2017-10-20 | 2019-04-30 | 特变电工沈阳变压器集团有限公司 | A kind of three-phase solid laminated core structure |
| CN110556235A (en) * | 2019-10-19 | 2019-12-10 | 北京中热信息科技有限公司 | Star-shaped folding iron core transformer |
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