CN204632536U - The electrical transformer cores structure of low no-load loss - Google Patents
The electrical transformer cores structure of low no-load loss Download PDFInfo
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- CN204632536U CN204632536U CN201520385342.XU CN201520385342U CN204632536U CN 204632536 U CN204632536 U CN 204632536U CN 201520385342 U CN201520385342 U CN 201520385342U CN 204632536 U CN204632536 U CN 204632536U
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- silicon steel
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- iron core
- core column
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Abstract
The utility model relates to a kind of electrical transformer cores structure of low no-load loss.Described core structure comprises iron yoke assembly and iron core column assembly.Described iron yoke assembly comprises the two iron yokes be laterally arranged in parallel, and described iron core column assembly is between described two iron yokes, and described iron core column assembly comprises three iron core column of parallel longitudinal layout.Described iron yoke assembly and iron core column assembly form " day " font fallen.The cross section of described three iron core column is all rounded, and the cross section of described two iron yokes is all arranged to octagon structure, and the inscribed circle radius of described octagon is equal with the radius of the circular cross section of described three iron core column.The utility model merely add the material of a small amount of iron yoke, achieves declining to a great extent of iron core no-load loss.
Description
Technical field
the utility model belongs to field of electrical equipment, is specifically related to a kind of electrical transformer cores structure.
Background technology
the no-load loss mainly core loss of transformer, it is made up of magnetic hysteresis loss and eddy current loss.Magnetic hysteresis loss is directly proportional to permeability magnetic material, and is directly proportional to the quadratic power of magnetic flux density; And the thickness of the quadratic power of eddy current loss and magnetic flux density, the quadratic power of permeability magnetic material thickness, the quadratic power of frequency and permeability magnetic material is directly proportional, reduce no-load loss and will reduce magnetic flux density, its result causes the weight of permeability magnetic material to increase.Or adopt high magnetic conduction, low-loss permeability magnetic material, or adopt the permeability magnetic material that thickness is thinner.Its result all causes the increase of transformer cost, and excessively thin silicon steel sheet makes the reduction of the flatness of iron core cause the mechanical strength of iron core to reduce.
as depicted in figs. 1 and 2, the core structure that conventional medium-small type distribution transformers is traditional comprises iron yoke assembly and iron core column assembly, described iron yoke assembly comprises the two iron yokes 10 be laterally arranged in parallel, described iron core column assembly is between described two iron yokes 10, described iron core column assembly comprises three iron core column 20 of parallel longitudinal layout, described iron yoke assembly and iron core column assembly form " day " font fallen, the cross section of described two iron yokes 10 and three iron core column 20 and the cross section at D-D place and C-C place all rounded.This makes the no-load loss of traditional core structure comparatively large, wastes a large amount of electric energy, is unfavorable for economic development.
Utility model content
for the defect of prior art, the technical problems to be solved in the utility model is to provide the electrical transformer cores structure of the low no-load loss that a kind of structure is simple, no-load loss is few.
in order to solve the problems of the technologies described above, a kind of technical scheme that the utility model adopts is: a kind of electrical transformer cores structure of low no-load loss, comprises iron yoke assembly and iron core column assembly.Described iron yoke assembly comprises the two iron yokes be laterally arranged in parallel, and described iron core column assembly is between described two iron yokes, and described iron core column assembly comprises three iron core column of parallel longitudinal layout.Described iron yoke assembly and iron core column assembly form " day " font fallen.The cross section of described three iron core column is all rounded, and the cross section of described two iron yokes is all arranged to octagon structure, and the inscribed circle radius of described octagon is equal with the radius of the circular cross section of described three iron core column.
concrete, described two iron yokes form by silicon steel sheet is stacked.
concrete, described octagon structure comprise center silicon steel sheet and centrally silicon steel sheet from the interior secondary silicon steel sheet of the multi-disc of stacked laminating successively outward.
preferably, the secondary silicon steel sheet of described multi-disc comprises the multi-disc width silicon steel sheet equal with center silicon steel sheet width and multi-disc width and is less than center silicon steel sheet width and the silicon steel sheet that successively decreases successively of width, the silicon steel sheet that described multi-disc width is equal with center silicon steel sheet width forms first level silicon steel sheet group, and described multi-disc width is less than center silicon steel sheet width and the silicon steel sheet that width successively decreases successively forms second subprime silicon steel sheet group.
concrete, from interior stacked first level silicon steel sheet group and second subprime silicon steel sheet group successively outward on the silicon steel sheet of described center.
concrete, the silicon steel sheet in described second subprime silicon steel sheet group centrally silicon steel sheet direction width is stepped from inside to outside successively decreases successively.
scope of the present utility model, is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should contain other technical scheme of being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed simultaneously.The technical characteristic that such as, disclosed in above-mentioned feature and the application (but being not limited to) has similar functions is replaced mutually and the technical scheme etc. formed.
because technique scheme is used, the utility model compared with prior art has following advantages: the utility model is by changing the structure of iron yoke, the cross section of iron yoke is changed into octagon structure described in utility model by the circular configuration of routine, and the inscribe radius of a circle of octagon structure is equal with the radius of conventional circle, this makes the cross-sectional area of iron yoke become large, and then when magnetic flux is certain, magnetic flux density diminishes, and the cross-sectional area of iron yoke becomes the large weight of iron yoke that also can make and becomes large simultaneously.Because no-load loss is directly proportional to the quadratic power of magnetic flux density, be directly proportional to the weight of iron yoke, so iron yoke flux amount diminishes and will to become greatly on the impact that no-load loss increases much larger than iron yoke weight the impact that no-load loss reduces.Namely the utility model merely add the material of a small amount of iron yoke, achieves declining to a great extent of iron core no-load loss.
Accompanying drawing explanation
accompanying drawing 1 is the structural representation of core structure in prior art.
accompanying drawing 2 is the generalized section at C-C and D-D place in accompanying drawing 1.
accompanying drawing 3 is the structural representation of the electrical transformer cores structure of the utility model low no-load loss.
accompanying drawing 4 is the generalized section of A-A in accompanying drawing 3.
accompanying drawing 5 is the generalized section of B-B in accompanying drawing 3.
wherein: 1, iron yoke; 2, iron core column; 11, center silicon steel sheet; 12, first level silicon steel sheet group; 13, second subprime silicon steel sheet group; 10, iron yoke; 20, iron core column.
Embodiment
as Fig. 3, shown in Fig. 4 and Fig. 5, the electrical transformer cores structure of a kind of low no-load loss described in the utility model, comprise iron yoke assembly and iron core column assembly, described iron yoke assembly comprises the two iron yokes 1 be laterally arranged in parallel, described iron core column assembly is between described two iron yokes 1, described iron core column assembly comprises three iron core column 2 of parallel longitudinal layout, described iron yoke assembly and iron core column assembly form " day " font fallen, the cross section of described three iron core column 2 is all rounded, the cross section of described two iron yokes 1 is all arranged to octagon structure, the inscribed circle radius of described octagon is equal with the radius of the circular cross section of described three iron core column 2.
described two iron yokes 1 form by silicon steel sheet is stacked.Described octagon structure comprise center silicon steel sheet 11 and centrally silicon steel sheet 11 from the interior secondary silicon steel sheet of the multi-disc of stacked laminating successively outward.
the secondary silicon steel sheet of described multi-disc comprises the multi-disc width silicon steel sheet equal with center silicon steel sheet 11 width and multi-disc width and is less than center silicon steel sheet 11 width and the silicon steel sheet that successively decreases successively of width, the silicon steel sheet that described multi-disc width is equal with center silicon steel sheet 11 width forms first level silicon steel sheet group 12, and described multi-disc width is less than center silicon steel sheet 11 width and the silicon steel sheet that width successively decreases successively forms second subprime silicon steel sheet group 13.From interior stacked first level silicon steel sheet group 12 and second subprime silicon steel sheet group 13 successively outward on described center silicon steel sheet 11.Silicon steel sheet in described second subprime silicon steel sheet group 13 centrally silicon steel sheet 11 direction width is stepped from inside to outside successively decreases successively.
the utility model merely add the cross-sectional area of iron yoke 1, when only increasing a small amount of iron yoke 1 weight, the no-load loss of iron core is declined to a great extent.Do not increase the cross-sectional area of iron core column 2, winding is not increased in the loop length of iron core column 2, and the cost of coil does not increase.
as mentioned above, we are illustrated according to aim of the present utility model completely, but the utility model is not limited to above-described embodiment and implementation method.Different changes and enforcement is carried out in the scope that the practitioner of correlative technology field can permit at technological thought of the present utility model.
Claims (6)
1. the electrical transformer cores structure of a low no-load loss, comprise iron yoke assembly and iron core column assembly, described iron yoke assembly comprises the two iron yokes (1) be laterally arranged in parallel, described iron core column assembly is positioned between described two iron yokes (1), described iron core column assembly comprises three iron core column (2) of parallel longitudinal layout, described iron yoke assembly and iron core column assembly form " day " font fallen, the cross section of described three iron core column (2) is all rounded, it is characterized in that: the cross section of described two iron yokes (1) is all arranged to octagon structure, the inscribed circle radius of described octagon is equal with the radius of the circular cross section of described three iron core column (2).
2. the electrical transformer cores structure of low no-load loss according to claim 1, is characterized in that: described two iron yokes (1) form by silicon steel sheet is stacked.
3. the electrical transformer cores structure of low no-load loss according to claim 2, is characterized in that: described octagon structure comprise center silicon steel sheet (11) and centrally silicon steel sheet (11) from the interior secondary silicon steel sheet of the multi-disc of stacked laminating successively outward.
4. the electrical transformer cores structure of low no-load loss according to claim 3, it is characterized in that: the secondary silicon steel sheet of described multi-disc comprises the multi-disc width silicon steel sheet equal with center silicon steel sheet (11) width and multi-disc width and is less than center silicon steel sheet (11) width and the silicon steel sheet that successively decreases successively of width, the silicon steel sheet that described multi-disc width is equal with center silicon steel sheet (11) width forms first level silicon steel sheet group (12), and described multi-disc width is less than center silicon steel sheet (11) width and the silicon steel sheet that width successively decreases successively forms second subprime silicon steel sheet group (13).
5. the electrical transformer cores structure of low no-load loss according to claim 4, is characterized in that: from interior stacked first level silicon steel sheet group (12) and second subprime silicon steel sheet group (13) successively outward on described center silicon steel sheet (11).
6. the electrical transformer cores structure of the low no-load loss according to claim 4 or 5, is characterized in that: the silicon steel sheet in described second subprime silicon steel sheet group (13) centrally silicon steel sheet (11) direction width is stepped from inside to outside successively decreases successively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520385342.XU CN204632536U (en) | 2015-06-05 | 2015-06-05 | The electrical transformer cores structure of low no-load loss |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520385342.XU CN204632536U (en) | 2015-06-05 | 2015-06-05 | The electrical transformer cores structure of low no-load loss |
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| CN204632536U true CN204632536U (en) | 2015-09-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390243A (en) * | 2015-11-24 | 2016-03-09 | 宜兴市兴益特种变压器有限公司 | Iron core structure for large-capacity rectifier transformer |
-
2015
- 2015-06-05 CN CN201520385342.XU patent/CN204632536U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390243A (en) * | 2015-11-24 | 2016-03-09 | 宜兴市兴益特种变压器有限公司 | Iron core structure for large-capacity rectifier transformer |
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