CN209804425U - Amorphous alloy transformer winding framework with short circuit resistance - Google Patents
Amorphous alloy transformer winding framework with short circuit resistance Download PDFInfo
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- CN209804425U CN209804425U CN201920711593.0U CN201920711593U CN209804425U CN 209804425 U CN209804425 U CN 209804425U CN 201920711593 U CN201920711593 U CN 201920711593U CN 209804425 U CN209804425 U CN 209804425U
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- steel plate
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- amorphous alloy
- alloy transformer
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Abstract
an amorphous alloy transformer winding bobbin with short circuit resistance, comprising: the amorphous alloy transformer comprises an amorphous alloy transformer high-voltage winding, an amorphous alloy transformer low-voltage winding, an insulating soft composite material, a U-shaped stainless steel plate, a J-shaped stainless steel plate, a stainless steel packing buckle, a PET binding band and a fixing and mounting plate; the utility model discloses beneficial effect: the insulating soft composite material has excellent adsorbability, can be well attached to a coil wire, and avoids displacement; after baking, the whole body forms a rigid body, the rigidity of the low-voltage winding is enhanced, and the impact of the low-voltage winding on the amorphous iron core is reduced; the stainless steel plate framework enables the external tensile stress of the radial short circuit of the high-voltage coil and the inward shrinkage stress of the low-voltage coil to be mutually offset; the two ends of the transformer winding are restrained, the outward expansion stress of the high-voltage coil and the low-voltage coil is counteracted, and the sudden short circuit resistance of the transformer is improved; and the PET binding band and the stainless steel packing buckle are adopted for binding and fastening, so that the stress of the winding coil is effectively reduced, and the sudden short circuit resistance of the transformer is improved.
Description
Technical Field
The utility model relates to a power equipment field, in particular to metallic glass transformer winding skeleton with anti short circuit ability.
background
With the continuous development of the power industry, the system capacity and the capacity of a single large power transformer are continuously increased, the short-circuit electric power of the transformer is also rapidly increased, and the operating environment of a power grid is worse and worse. When the power transformer is suddenly short-circuited, huge short-circuit current flows in the winding, the current can generate strong leakage magnetic fields around the winding, and under the interaction of the winding and the leakage magnetic fields, the winding of the transformer can bear short-circuit electrodynamic force which is hundreds of times higher than a rated value. If the short-circuit resistance of the transformer is not enough, under the huge impact force, the insulation of the winding and the structural part are damaged lightly, and the insulation performance of the transformer is influenced; the winding is loosened, twisted, deformed and broken, and even the whole winding collapses; or because of insulation damage, turn-to-turn short circuit is caused, so that the winding is burnt, and the economic loss is very huge.
The short-circuit resistance is widely regarded as the evaluation standard of the comprehensive technical capability and the process level of transformer manufacturing. The transformer winding is under the action of axial force and radial force, so that the problems of deformation, looseness and the like of the winding are caused. At present, the existing technology for overcoming short circuit electrodynamic force is mainly that a rectangular cylinder structure surrounded by thick paper boards is used as a framework of a low-voltage winding of an amorphous transformer, and the short circuit resistance of a rectangular coil is poorer than that of a circular coil. Therefore, the transformer winding framework structure is provided to protect the deformation of the rectangular winding and has important influence on improving the anti-burst short circuit capability of the amorphous transformer.
Disclosure of Invention
For overcoming the not enough of prior art, the utility model provides an amorphous alloy transformer winding skeleton with anti short circuit ability for overcome because the transformer winding that short circuit electrodynamic force leads to is loose, twist reverse, warp the scheduling problem, improve the ability that amorphous alloy transformer bore proruption short circuit, guarantee amorphous alloy transformer's operational quality.
The utility model provides a technical scheme that its technical problem adopted is:
an amorphous alloy transformer winding bobbin with short circuit resistance, comprising: the amorphous alloy transformer comprises an amorphous alloy transformer high-voltage winding, an amorphous alloy transformer low-voltage winding, an insulating soft composite material, a U-shaped stainless steel plate, a J-shaped stainless steel plate, a stainless steel packing buckle, a PET binding band and a fixing and mounting plate;
Wherein; the amorphous alloy transformer winding is a rectangular winding, wherein the amorphous alloy transformer high-voltage winding is sleeved outside the amorphous alloy transformer low-voltage winding; the high-voltage winding and the low-voltage winding are isolated by an insulating soft composite material; the outer side of the high-voltage winding is wound with an insulating soft composite material; the four sides of the rectangular winding are all stainless steel plate frameworks, each stainless steel plate framework is composed of a U-shaped stainless steel plate and a J-shaped stainless steel plate, the U-shaped stainless steel plates are placed on the upper portion, and the J-shaped stainless steel plates are placed on the lower portion; the J-shaped stainless steel plate is vertically sleeved on the outer side of the lower end of the high-low voltage winding, the U-shaped stainless steel plate is vertically sleeved on the outer side of the upper end of the high-low voltage winding, the U-shaped stainless steel plate and the J-shaped stainless steel plate are fixed on the inner side of the low-voltage winding through a fixed mounting plate, and the fixed mounting plate can be detached;
Wherein the insulating flexible composite material is DMD or NMN;
the J-shaped stainless steel plate outside the high-voltage winding is a short edge, two edges of the U-shaped stainless steel plate and the J-shaped stainless steel plate are bound and fixed through PET binding bands respectively, and the upper end and the lower end of each PET binding band are fixed through stainless steel packing buckles.
Compared with the prior art, the utility model has the advantages of it is following:
1. The insulating soft composite material on the surface of the winding has excellent adsorbability, and the composite material is well attached to the coil wire, so that displacement during operation is avoided; after being baked, the low-voltage winding is combined with the transformer low-voltage winding into a rigid body, so that the rigidity of the low-voltage winding is enhanced, and the impact of the low-voltage winding on the amorphous iron core is reduced.
2. After the transformer winding is provided with the U-shaped stainless steel plate and the J-shaped stainless steel plate framework, the outward expansion stress generated by the high-voltage coil due to the radial short-circuit electrodynamic force and the inward contraction stress generated by the low-voltage coil are mutually offset; meanwhile, the upper end face and the lower end face of the transformer winding are also restrained by the U-shaped stainless steel plate and the J-shaped stainless steel plate, outward-expanding stress generated by axial short-circuit electrodynamic force of the high-voltage coil and the low-voltage coil is offset, and the sudden short-circuit resistance of the amorphous alloy transformer is improved.
3. Adopt PET bandage and stainless steel packing to detain two stainless steel sheet ligature fastenings about with, the ligature is efficient, saves time, and the atress of more effectual reduction winding coil improves amorphous alloy transformer's anti proruption short circuit ability.
Drawings
FIG. 1 is a front view of a winding frame of an amorphous alloy transformer with short-circuit resistance;
FIG. 2 is a top view of an amorphous alloy transformer winding bobbin with short-circuit resistance;
FIG. 3 is a schematic diagram of the short side connection of a stainless steel plate of an amorphous alloy transformer winding framework with short-circuit resistance:
FIG. 4 is a schematic diagram of a long side connection of a stainless steel plate of a winding frame of an amorphous alloy transformer with short-circuit resistance;
In the figure: 1. a high voltage winding; 2. a low voltage winding; 3. an insulating flexible composite material; 4. u-shaped stainless steel plates and J-shaped stainless steel plates; 5. stainless steel packing buckles; 6. a PET bandage; 7. and fixing the mounting plate.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings and examples, which are provided for illustration of the present invention and are not intended to limit the scope of the present invention.
An amorphous alloy transformer winding bobbin with short circuit resistance as shown in fig. 1-4 comprises: the amorphous alloy transformer comprises an amorphous alloy transformer high-voltage winding 1, an amorphous alloy transformer low-voltage winding 2, an insulating soft composite material 3, a U-shaped stainless steel plate, a J-shaped stainless steel plate 4, a stainless steel packing buckle 5, a PET binding band 6 and a fixing and mounting plate 7.
Pressing a layer of insulating soft composite material DMD on the outer side of the low-voltage winding 2 by using a pressing die; pressing a layer of insulating soft composite material DMD on the outer side of the high-voltage winding 1 by using a pressing die; and after pressing, sending the high-voltage winding and the low-voltage winding into a drying room for baking.
Taking out the baked winding group, firstly sleeving a J-shaped stainless steel plate 42 on the outer sides of the lower ends of the high-voltage winding 1 and the low-voltage winding 2, and then vertically sleeving another U-shaped stainless steel plate 41 on the outer sides of the upper ends of the high-voltage winding 1 and the low-voltage winding 2; and the long sides of the J-shaped stainless steel plates 42 are connected and placed, and finally, the upper stainless steel plate and the lower stainless steel plate are fixedly connected with the fixed mounting plate 7 through bolts, and the two stainless steel plates are fixed on the inner side of the low-voltage winding.
the PET bandage 6 is bound on the other side of the U-shaped stainless steel plate 41 and the outer side of the short side of the J-shaped stainless steel plate 42; the upper stainless steel plate 41 and the lower stainless steel plate 42 outside the high-voltage winding are preliminarily fixed and connected together, and then the packaging machine is used for buckling the stainless steel buckle 5 at the joint of the PET bandage 6 and the stainless steel plates, so that the stainless steel plates are fixed with the PET bandage 6. And (4) repeating the steps 3 and 4 by using the other three winding steel frameworks of the rectangular winding.
Claims (3)
1. an amorphous alloy transformer winding skeleton with short circuit resistance, characterized by comprising: the amorphous alloy transformer comprises an amorphous alloy transformer high-voltage winding, an amorphous alloy transformer low-voltage winding, an insulating soft composite material, a U-shaped stainless steel plate, a J-shaped stainless steel plate, a stainless steel packing buckle, a PET binding band and a fixing and mounting plate; the amorphous alloy transformer winding is a rectangular winding, and the amorphous alloy transformer high-voltage winding is sleeved outside the amorphous alloy transformer low-voltage winding; the high-voltage winding and the low-voltage winding are isolated by an insulating soft composite material; the outer side of the high-voltage winding is wound with an insulating soft composite material; the four sides of the rectangular winding are all stainless steel plate frameworks, each stainless steel plate framework is composed of a U-shaped stainless steel plate and a J-shaped stainless steel plate, the U-shaped stainless steel plate is arranged on the upper portion, and the J-shaped stainless steel plate is arranged on the lower portion; the vertical cover of J type stainless steel plate is in the outside of high-low voltage winding lower extreme, and the vertical cover of U type stainless steel plate is in the outside of high-low voltage winding upper end, and U type stainless steel plate and J type stainless steel plate pass through fixed mounting panel to be fixed at the low-voltage winding inboard, and fixed mounting panel can be dismantled.
2. the amorphous alloy transformer winding skeleton with short circuit resistance capability of claim 1, wherein: the insulating flexible composite material is DMD or NMN.
3. the amorphous alloy transformer winding skeleton with short circuit resistance capability of claim 1, wherein: the J-shaped stainless steel plate outside the high-voltage winding is a short edge, two edges of the U-shaped stainless steel plate and the J-shaped stainless steel plate are respectively bound and fixed by a PET (polyethylene terephthalate) binding band, and the upper end and the lower end of the PET binding band are fixed by stainless steel packing buckles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920711593.0U CN209804425U (en) | 2019-05-17 | 2019-05-17 | Amorphous alloy transformer winding framework with short circuit resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920711593.0U CN209804425U (en) | 2019-05-17 | 2019-05-17 | Amorphous alloy transformer winding framework with short circuit resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209804425U true CN209804425U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920711593.0U Expired - Fee Related CN209804425U (en) | 2019-05-17 | 2019-05-17 | Amorphous alloy transformer winding framework with short circuit resistance |
Country Status (1)
| Country | Link |
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| CN (1) | CN209804425U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085401A (en) * | 2019-05-17 | 2019-08-02 | 沈阳工业大学 | Amorphous alloy transformer winding skeleton with anti-short circuit capability and preparation method thereof |
-
2019
- 2019-05-17 CN CN201920711593.0U patent/CN209804425U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085401A (en) * | 2019-05-17 | 2019-08-02 | 沈阳工业大学 | Amorphous alloy transformer winding skeleton with anti-short circuit capability and preparation method thereof |
| CN110085401B (en) * | 2019-05-17 | 2024-04-09 | 沈阳工业大学 | Amorphous alloy transformer winding framework with short circuit resistance and manufacturing method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 |