CN101266875A - 3-D triangle open mouth coiling iron core - Google Patents
3-D triangle open mouth coiling iron core Download PDFInfo
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- CN101266875A CN101266875A CNA2007100379817A CN200710037981A CN101266875A CN 101266875 A CN101266875 A CN 101266875A CN A2007100379817 A CNA2007100379817 A CN A2007100379817A CN 200710037981 A CN200710037981 A CN 200710037981A CN 101266875 A CN101266875 A CN 101266875A
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- yoke
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Abstract
A three-dimensional triangular opening curling iron core with high performances and easy for production and maintenance is disclosed. The iron core uses three single phase opening curling iron cores (4), (5), (6) with the same shape to combine, at the central angle of 120 degrees, into the three-dimensional triangular opening curling iron whose section is elliptical or polygonal (an external ellipse). An core post section of each single phase opening curling iron core is semi-elliptical or polygonal (an external semi-ellipse), and a yoke section is the semi-ellipse which is as (2/3-1) time as the post section. Due to the opening of the iron core, windings can be singly manufactured, and when producing and maintaining, the iron core can be opened at the opening gaps for installation or replacement of the windings, the windings are sleeved within three core posts (1), (2), (3).
Description
Affiliated technical field
Type of the present invention relates to a kind of three-phase power transformer iron core, and the cross section of its three stem stem is oval entirely, and face shaping is that cross section is the cylinder of equilateral triangle.
Background technology
The iron core of domestic three-phase power transformer roughly is divided into laminated core structure and takeup type iron core two big classes: laminated core structure, and it is that single piece of silicon steel band closed assembly by all size forms; The takeup type iron core claims to roll up iron core again, and it is to be reeled by the silicon strip that a width does not wait to form.Laminated transformer since when the iron core closed assembly every layer intersection have many places mitre, thereby the change in magnetic flux density of intersection is excessive, can cause having produced a series of technical barriers, cause technical performance index to descend and used silicon steel sheet more.The volume iron core has two kinds of versions: a kind of is that the plane is horizontal day shape structure, three iron core column of this structure all in one plane, three-phase magnetic circuit is closed mutually, but the imbalance of three-phase magnetic circuit no-load current causes no-load loss to increase; Another kind is the 3-D triangle structure, and it is assembled according to the equilateral triangle structure that core structure is semicircular single-phase iron core by three structures and the identical and column section of size and yoke cross section.The intact iron core column of assembly unit is that the cross section is a sub-circular by the cylinder-shaped iron core cylinder of stem stem assembly to becoming of two single-phase iron cores.This structure iron core three-phase magnetic loop is equal fully, three-phase magnetic circuit no-load current balance.But this technology itself exists the magnetic flux density and the inconsistent problem of post magnetic flux density of yoke.The ideal structure of tridimensional triangle iron core be every single-phase iron core the iron yoke sectional area should greater than the stem stem sectional area of every single-phase iron core (
) doubly (about 16%), the requirement that can reach this process Installation at present all is difficult to realize.In addition, no seam volume iron core is also in problems, as dedicated manufacturing equipment, production capacity is limited, complex procedures is loaded down with trivial details, inconvenient maintenance, can not produce large-capacity power transformer etc.
Summary of the invention
Type of the present invention provides a kind of 3-D triangle open mouth coiling iron core.Open coil iron core is exactly in volume iron core manufacture process, carries out continuously coiling successively by curve silicon steel sheet billot after disconnection and forms, thereby a fracture is all arranged in every layer, and every layer of fracture site arranged by regular linear, and fracture site is located at yoke or following yoke.The cross sectional shape of three stem stems of the iron core of type narration of the present invention can be ellipse or polygon (external ellipse).Because this iron core has open nature, make that the manufacturing of iron core is all extremely convenient with maintenance.
The technical scheme that its technical problem that solves type of the present invention adopts is: this iron core becomes 3-D triangle open mouth coiling iron core with the identical single-phase open coil iron core of three independences and shape with the angle assembling combination of 120 ° at central angle.The core section of type of the present invention is ellipse or polygon (external ellipse), the major axis of the iron core of corresponding different capabilities transformer and the proportion of minor axis (being a and b) are 1: 0.4～1: 0.7, the size range of major axis be 20mm to 500mm, the size range of minor axis is that 10mm is to 350mm.Every the single-phase iron core of reeling all adopt thickness at 0.18mm to the cold-reduced silicon sheet billot between the 0.35mm, the stem stem cross section of these three single-phase open coil iron cores is half elliptic or polygon (external half elliptic), the sectional area of every single-phase iron core yoke be greater than its stem stem sectional area (
) doubly.Three the single-phase iron cores that whole iron core adopted of reeling all be silicon strip after cut-out continuously coiling form, rather than the iron core that coiling is good successively cuts off, the advantage of coiling is to make iron core more closely reach the iron core fracture neatly not have burr continuously.Realize single-phase open coil iron core yoke sectional area greater than column section long-pending (
) doubly scheme: when the open core up-coiler carries out coiling iron core, from motion tracking, in being wound up into the certain thickness that configures in advance, upper and lower yoke section is carried out clocklike double-deck lap wound action around the machine digital control system.Double-deck lap wound action is exactly when being wound in this section thickness, every coiling one encloses only reel upper and lower yoke and a cylinder, thereby miss a cylinder, be actually 3/4 circle of having reeled, so side column only increased one deck when upper and lower yoke respectively increased one deck (amounting to two-layer), after the double-deck lap wound action of finishing this section thickness, just recover normal the coiling.Can realize single-phase iron core yoke sectional area for greater than column section long-pending (
) doubly.Coupling part between stem stem and the stem stem is the iron yoke, in design and production process to iron core, all cuts off out a fracture site at every layer of iron core, and every layer of fracture site is broken line arrangement clocklike, and aperture position can descend yoke, also can be at last yoke.
The beneficial effect of type of the present invention is, each has the loop mutually of one's own iron circuit, have magnetic circuit weak point, three-phase magnetic circuit symmetry fully, characteristics such as the ability of anti-sudden short circuit is strong, saving material, volume is little, processing performance is good are met the requirement of Chinese electrical network fully by the transformer that it was equipped with.Do not need special-purpose spooling equipment in manufacturing process, coil coiling separately in installation or more opening part can be opened direct replacing layer by layer during emat coil, has improved production efficiency.And in a single day coil break down, and the transformer core opening part can be opened and keep in repair, and makes that maintenance is extremely convenient.Each has the loop balance mutually of one's own the three-phase magnetic circuit of 3-D triangle open mouth coiling iron core, and third-harmonic component has reduced the harmonic component of no-load current largely forming the closed-loop path in the frame separately, and three-phase magnetic circuit is symmetry equivalent fully.Since the sectional area that has satisfied tridimensional triangle iron core iron yoke under the perfect condition greater than its column section long-pending (
) doubly condition, make that the magnetic flux density of iron yoke is consistent with the magnetic flux density of its post.The cross section is that ellipse makes magnetic circuit shorten, and loss reduces.
Description of drawings
Below in conjunction with drawings and Examples type of the present invention is further specified.
The plan view of Fig. 1 type of the present invention.
The three-dimensional view of Fig. 2 type of the present invention.
Fig. 3 fracture site is at the view of the single-phase iron core of following yoke.
Fig. 4 fracture site is at the view of the single-phase iron core of last yoke.
The stem stem cross section of Fig. 5 type of the present invention is oval-shaped view.
The stem stem cross section of Fig. 6 type of the present invention is the view of polygon (external ellipse).
The view of every layer of silicon steel sheet of the single-phase iron core of Fig. 7.
The scope of the size range of the iron core of corresponding different capabilities: H is that 500mm is to 2000mm among Fig. 1; The scope of H1 is that 400mm is to 1800mm; The scope of Hw is that 300mm is to 1500mm; The scope of L1 is that 175mm is to 800mm; The scope of L is that 400mm is to 1000mm; The scope of Mo is that 300mm is to 800mm; The diameter of section scope of circle is that 60mm is to 450mm; The yoke wide region is that 100mm is to 400mm.
(7) among Fig. 3 are fracture site, and (8) are yoke; (9) among Fig. 4 are fracture site, and (10) are yoke.
(11), (12) are for carrying out the silicon steel sheet shape of double-deck lap wound action among Fig. 7; (14) be fracture site shape of every when last yoke; (16) be fracture site when yoke down every shape.
Specific embodiments
Referring to Fig. 2, this iron core has adopted three to become tridimensional triangle iron core with single-phase open coil iron core (4)～(6) of shape by the angle assembling combination of 120 ° at central angle, coil can be enclosed within three posts (1)～(3), and the cross section of three stem stems of iron core that assembling finishes is ellipse or polygon (external ellipse).Three the single-phase iron cores that whole iron core adopted of reeling all are that silicon strip continuous coiling after cut-out forms, rather than the iron core that coiling is good successively cuts off.Referring to Fig. 3, Fig. 7, every single-phase open coil iron core is the silicon steel sheet billot of being left by the curve cutting machine, under the coiling of numerical control open core up-coiler, make, the iron core aperture slots is well-regulated even distribution, fracture site is when descending yoke (7), every layer be shaped as (16), fracture site (15); Referring to Fig. 4, Fig. 7, fracture site when last yoke (9), every layer be shaped as (14), fracture site (13).Referring to Fig. 5, if the cross sectional shape of every single-phase open coil iron core is a half elliptic, the cross section of three stem stems of iron core that assembling finishes is ellipse.Referring to Fig. 6, if the cross sectional shape of every single-phase open coil iron core is polygon (an external half elliptic), the cross section of three stem stems of iron core that assembling finishes is polygon (external ellipse).The aperture slots of every single-phase open coil iron core is that well-regulated broken line evenly distributes, when each single-phase iron core of coiling, the upper and lower yoke double-deck lap wound action that hockets when being wound up into certain thickness, the sectional area that makes its iron core yoke greater than column section long-pending (
) doubly, referring to Fig. 7, the laminate shape of double-deck lap wound be (11), (12), alternately coiling and upper and lower yoke position are overlapping all the time for they.The 3-D triangle open mouth iron core that assembly unit is finished is opened into a U type at the aperture slots place, can go in three iron core column by the mounting coil that coiling is good, the more closed layer by layer recovery colligation of iron core can be assembled power transformer.
Claims (8)
1. 3-D triangle open mouth coiling iron core, it is characterized in that: whole iron core is to be formed by the angle assembling combination of 120 ° at central angle by three identical single-phase open coil iron core (4), (5), (6) of shape.
2. 3-D triangle open mouth coiling iron core according to claim 1, it is characterized in that: the fracture site of every single-phase open coil iron core can be two positions, fracture site is when descending yoke (7), the shape of every layer of silicon steel sheet is (16), fracture site when last yoke (9), being shaped as of every layer of silicon steel sheet (14).
3. 3-D triangle open mouth coiling iron core according to claim 1 is characterized in that: the stem stem cross section of every single-phase iron core is a half elliptic, the sectional area of every single-phase open coil iron core yoke greater than its stem stem sectional area (
) doubly.
4. 3-D triangle open mouth coiling iron core according to claim 1 is characterized in that: every the single-phase iron core of reeling all adopts thickness 0.18mm is to the silicon steel sheet billot between the 0.35mm.
5. 3-D triangle open mouth coiling iron core according to claim 1, it is characterized in that: the stem stem cross section of every single-phase iron core is a half elliptic, the cross section of three posts of the tridimensional triangle iron core that assembly unit finishes is for oval, the proportion of the major axis of every single-phase core section and minor axis (being a and b) is 1: 0.4～1: 0.7, the size range of major axis be 20mm to 500mm, the size range of minor axis is that 10mm is to 350mm.
6. 3-D triangle open mouth coiling iron core according to claim 1, it is characterized in that: the stem stem cross section of every single-phase iron core is polygon (an external half elliptic), the cross section of three posts of the tridimensional triangle iron core that assembly unit finishes is polygon (an external ellipse), the external long axis of ellipse of every single-phase core section and minor axis (being a and b) proportion is 1: 0.4～1: 0.7, the size range of major axis be 20mm to 500mm, the size range of minor axis is that 10mm is to 350mm.
7. 3-D triangle open mouth coiling iron core according to claim 1 is characterized in that: the size range of the iron core of corresponding different capabilities, the scope of H are that 500mm is to 2000mm; The scope of H1 is that 400mm is to 1800mm; The scope of Hw is 300mm to the scope of 1500mm L1 is that 175mm is to 800mm; The scope of L is that 400mm is to 1000mm; The scope of Mo is that 300mm is to 800mm; The yoke wide region is that 100mm is to 400mm.
8. 3-D triangle open mouth coiling iron core according to claim 1 is characterized in that: in the thickness that carries out double-deck lap wound action, silicon steel sheet (11), (12) are for alternately reeling, and upper and lower yoke position is overlapping all the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100379817A CN101266875A (en) | 2007-03-12 | 2007-03-12 | 3-D triangle open mouth coiling iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100379817A CN101266875A (en) | 2007-03-12 | 2007-03-12 | 3-D triangle open mouth coiling iron core |
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| Publication Number | Publication Date |
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| CN101266875A true CN101266875A (en) | 2008-09-17 |
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| CNA2007100379817A Pending CN101266875A (en) | 2007-03-12 | 2007-03-12 | 3-D triangle open mouth coiling iron core |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117693A (en) * | 2010-12-28 | 2011-07-06 | 广西仙河变压器科技有限公司 | Energy-saving three-dimensional iron core-coiled transformer |
| CN102938298A (en) * | 2012-09-05 | 2013-02-20 | 广东岭先技术投资企业（有限合伙） | Transformer iron core and manufacturing method thereof |
| CN102945734A (en) * | 2012-09-05 | 2013-02-27 | 广东岭先技术投资企业（有限合伙） | Power transformer based on modular combination |
| CN107170561A (en) * | 2017-07-31 | 2017-09-15 | 齐会南 | A kind of stereo amorphous alloy open core resin casting dry-type transformer |
-
2007
- 2007-03-12 CN CNA2007100379817A patent/CN101266875A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117693A (en) * | 2010-12-28 | 2011-07-06 | 广西仙河变压器科技有限公司 | Energy-saving three-dimensional iron core-coiled transformer |
| CN102938298A (en) * | 2012-09-05 | 2013-02-20 | 广东岭先技术投资企业（有限合伙） | Transformer iron core and manufacturing method thereof |
| CN102945734A (en) * | 2012-09-05 | 2013-02-27 | 广东岭先技术投资企业（有限合伙） | Power transformer based on modular combination |
| CN102945734B (en) * | 2012-09-05 | 2015-09-02 | 广东岭先技术投资企业（有限合伙） | A kind of power transformer of modular combination |
| CN102938298B (en) * | 2012-09-05 | 2016-01-06 | 广东岭先技术投资企业（有限合伙） | Transformer core and manufacture method thereof |
| CN107170561A (en) * | 2017-07-31 | 2017-09-15 | 齐会南 | A kind of stereo amorphous alloy open core resin casting dry-type transformer |
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Open date: 20080917 |