CN110085401B - Amorphous alloy transformer winding framework with short circuit resistance and manufacturing method thereof - Google Patents
Amorphous alloy transformer winding framework with short circuit resistance and manufacturing method thereof Download PDFInfo
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- CN110085401B CN110085401B CN201910410957.6A CN201910410957A CN110085401B CN 110085401 B CN110085401 B CN 110085401B CN 201910410957 A CN201910410957 A CN 201910410957A CN 110085401 B CN110085401 B CN 110085401B
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- 238000004804 winding Methods 0.000 title claims abstract description 113
- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000010935 stainless steel Substances 0.000 claims abstract description 82
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 82
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 238000012856 packing Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000000452 restraining effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 230000005520 electrodynamics Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
An amorphous alloy transformer winding former with short circuit resistance, comprising: the high-voltage winding of the amorphous alloy transformer, the low-voltage winding of the amorphous alloy transformer, 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 belt and a fixed mounting plate; the invention has the beneficial effects that: the insulating soft composite material has excellent adsorptivity, can be well attached to a coil wire, and avoids displacement; a rigid body is integrally formed after baking, 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; the stainless steel plate skeleton makes the outward tensile stress of the radial short circuit of the high-voltage coil and the inward shrinkage stress of the low-voltage coil offset each other; restraining two ends of a transformer winding, counteracting the outwards expanding stress of the high-low voltage coil, and improving the sudden short circuit resistance of the transformer; the PET binding belt 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 invention relates to the field of power equipment, in particular to an amorphous alloy transformer winding framework with short circuit resistance and a manufacturing method thereof.
Background
With the continuous development of the power industry, the system capacity and the single capacity of a large power transformer are continuously increased, the short-circuit electric power of the transformer is also rapidly increased, and the running environment of a power grid is more and more severe. When the power transformer is suddenly short-circuited, a huge short-circuit current flows through the windings, the current can generate a strong leakage magnetic field around the windings, and under the interaction of the current and the leakage magnetic field, the windings of the transformer bear short-circuit electromotive force which is hundreds of times higher than a rated value. If the short-circuit resistance of the transformer is insufficient, the winding insulation and structural members are damaged under the condition of light impact force, and the insulation performance of the transformer is affected; the winding is loosened, twisted, deformed and broken, even the whole winding collapses; or because of insulation damage, turn-to-turn short circuit is caused, so that windings are burnt out, and the economic loss is huge.
The ability to resist short circuits is widely appreciated as an evaluation criterion for the comprehensive technical ability and the state of the art of transformer manufacturing. The transformer winding is subjected to axial force and radial force, so that the winding is deformed, loosened and the like. At present, the existing technology for overcoming short-circuit electrodynamic force mainly uses a rectangular cylinder structure surrounded by thick paper plates 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 round coil. Therefore, the transformer winding framework structure is provided to protect the rectangular winding from deformation, and has an important effect on improving the sudden short circuit resistance of the amorphous transformer.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an amorphous alloy transformer winding framework with short circuit resistance and a manufacturing method thereof, the method is used for solving the problems of loosening, torsion, deformation and the like of the transformer winding caused by short-circuit electrodynamic force, improving the capability of the amorphous alloy transformer for bearing sudden short-circuit and ensuring the operation quality of the amorphous alloy transformer.
The technical scheme adopted for solving the technical problems is as follows:
an amorphous alloy transformer winding former with short circuit resistance, comprising: the high-voltage winding of the amorphous alloy transformer, the low-voltage winding of the amorphous alloy transformer, 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 belt and a fixed mounting plate;
wherein; the amorphous alloy transformer winding is a rectangular winding, wherein the amorphous alloy transformer high-voltage winding group is sleeved outside the amorphous alloy transformer low-voltage winding; the high-voltage winding and the low-voltage winding are blocked 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 stainless steel plate frameworks, each stainless steel plate framework consists of a U-shaped stainless steel plate and a J-shaped stainless steel plate, the U-shaped stainless steel plate is placed on the upper part, and the J-shaped stainless steel plate is placed under the upper part; 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 is detachable;
wherein the insulating soft composite material is DMD or NMN;
the high-voltage winding is characterized in that the J-shaped stainless steel plate at the outer side of the high-voltage winding is a short side, two sides of the U-shaped stainless steel plate and the J-shaped stainless steel plate are respectively bound and fixed by PET binding bands, and the upper end and the lower end of each PET binding band are respectively fixed by stainless steel packing buckles.
A manufacturing method of an amorphous alloy transformer winding skeleton with short circuit resistance comprises the following steps:
step 1: transversely winding a circle of insulating soft composite material outside the low-voltage winding;
step 2: the high-voltage winding set is sleeved outside the low-voltage winding, a circle of insulating soft composite material is transversely wound outside the high-voltage winding set, and the high-voltage winding set is sent to a drying room for baking after being wrapped;
step 3: taking out the baked winding, sleeving a J-shaped stainless steel plate on the outer sides of the lower ends of the high-voltage winding and the low-voltage winding, sleeving another U-shaped stainless steel plate on the outer sides of the upper ends of the high-voltage winding and the low-voltage winding, and fixing the two steel plates on one side of the U-shaped stainless steel plate and the long side of the J-shaped stainless steel plate through a fixing and mounting plate;
step 4: the short side of the J-shaped stainless steel plate at the outer side of the high-voltage winding is fixedly bound with the other side of the U-shaped stainless steel plate by using a PET binding belt, and the PET binding belt is fixed with the steel plate by using a packing machine by using a stainless steel packing buckle.
Compared with the prior art, the invention has the following advantages:
1. the insulating soft composite material on the surface of the winding has excellent adsorptivity, and the composite material is well adhered to the coil wire, so that displacement is avoided during operation; and the baked low-voltage winding is combined with the low-voltage winding of the transformer to form 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 U-shaped stainless steel plate and the J-shaped stainless steel plate framework are arranged on the transformer winding, the outward expansion stress generated by the radial short-circuit electrodynamic force of the high-voltage coil and the inward contraction stress generated by the low-voltage coil are mutually counteracted; meanwhile, the upper end face and the lower end face of the transformer winding are restrained by the U-shaped stainless steel plate and the J-shaped stainless steel plate, so that outward expansion stress of the high-low voltage coil caused by axial short-circuit electrodynamic force is counteracted, and the sudden short-circuit resistance of the amorphous alloy transformer is improved.
3. The upper stainless steel plate and the lower stainless steel plate are bound and fastened by adopting the PET binding belt and the stainless steel packing buckle, so that the binding efficiency is high, the time is saved, the stress of the winding coil is effectively reduced, and the burst short circuit resistance of the amorphous alloy transformer is improved.
Drawings
FIG. 1 is a front view of an amorphous alloy transformer winding former with short circuit resistance;
FIG. 2 is a top view of an amorphous alloy transformer winding former with short circuit resistance;
fig. 3 is a schematic diagram of short side connection of a stainless steel plate of an amorphous alloy transformer winding frame with short circuit resistance:
FIG. 4 is a schematic diagram of the connection of the long sides of stainless steel plates of an amorphous alloy transformer winding frame with short circuit resistance;
in the figure: 1. a high voltage winding; 2. a low voltage winding; 3. an insulating soft composite material; 4. u-shaped stainless steel plate and J-shaped stainless steel plate; 5. stainless steel packing buckles; 6. PET binding band; 7. and fixing the mounting plate.
Detailed Description
The following detailed description of the present invention is further detailed in conjunction with the accompanying drawings and examples, which are provided to illustrate, but not to limit the scope of the invention.
An amorphous alloy transformer winding former with short circuit resistance as shown in fig. 1-4, comprising: the high-voltage winding 1 of the amorphous alloy transformer, the low-voltage winding 2 of the amorphous alloy transformer, the insulating soft composite material 3, the U-shaped stainless steel plate and the J-shaped stainless steel plate 4, the stainless steel packing buckle 5, the PET binding belt 6 and the fixed mounting plate 7;
a manufacturing method of an amorphous alloy transformer winding skeleton with short circuit resistance comprises the following steps:
step 1: pressing the outer side of the low-voltage winding 2 into a layer of insulation soft composite material DMD by using a pressing die;
step 2: pressing the outer side of the high-voltage winding 1 into a layer of insulation soft composite material DMD by using a pressing die; after the pressing is finished, the high-low voltage winding is sent into a drying room for baking;
step 3: taking out the baked winding group, firstly sleeving one 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 sleeving the other 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 vertically; placing the two stainless steel plates in connection with the long side of the J-shaped stainless steel plate 42, and finally fixedly connecting the upper and lower 2 stainless steel plates with the fixed mounting plate 7 through bolts, and fixing the two stainless steel plates at the inner side of the low-voltage winding;
step 4: the PET binding band 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 and lower stainless steel plates 41, 42 outside the high-voltage winding are preliminarily fixed and connected together, then the packer is used, the stainless steel packing buckle 5 is used, the connection part of the PET binding belt 6 and the stainless steel plates is nailed, and the stainless steel plates and the PET binding belt 6 are fixed. The remaining three winding steel skeletons of the rectangular winding repeat steps 3 and 4.
Claims (4)
1. An amorphous alloy transformer winding former with short circuit resistance, comprising: the high-voltage winding of the amorphous alloy transformer, the low-voltage winding of the amorphous alloy transformer, 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 belt and a fixed mounting plate; the amorphous alloy transformer winding is a rectangular winding, and the amorphous alloy transformer high-voltage winding group is sleeved outside the amorphous alloy transformer low-voltage winding; the high-voltage winding and the low-voltage winding are blocked by an insulating soft composite material; the outer side of the high-voltage winding is wound with an insulating soft composite material; four sides of the rectangular winding are stainless steel plate frameworks, each stainless steel plate framework consists 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 part, and the J-shaped stainless steel plate is arranged on the lower part; 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 is detachable;
one side of the U-shaped stainless steel plate and the long side of the J-shaped stainless steel plate are fixed on the inner side of the low-voltage winding, and the other side of the U-shaped stainless steel plate and the short side of the J-shaped stainless steel plate are fixed on the outer side of the high-voltage winding.
2. An amorphous alloy transformer winding former with short circuit resistance as claimed in claim 1, wherein: the insulating soft composite material is DMD or NMN.
3. An amorphous alloy transformer winding former with short circuit resistance as claimed in claim 1, wherein: the two edges of the U-shaped stainless steel plate and the J-shaped stainless steel plate are respectively bound and fixed by PET binding bands, and the upper end and the lower end of each PET binding band are respectively fixed by stainless steel packing buckles.
4. The method for manufacturing the amorphous alloy transformer winding skeleton with the short circuit resistance, which is disclosed in claim 1, is characterized in that: the manufacturing method comprises the following steps:
step 1: transversely winding a circle of insulating soft composite material outside the low-voltage winding;
step 2: the high-voltage winding set is sleeved outside the low-voltage winding, a circle of insulating soft composite material is transversely wound outside the high-voltage winding set, and the high-voltage winding set is sent to a drying room for baking after being wrapped;
step 3: taking out the baked winding, sleeving a J-shaped stainless steel plate on the outer sides of the lower ends of the high-voltage winding and the low-voltage winding, sleeving another U-shaped stainless steel plate on the outer sides of the upper ends of the high-voltage winding and the low-voltage winding, and fixing the two steel plates on one side of the U-shaped stainless steel plate and the long side of the J-shaped stainless steel plate through a fixing and mounting plate;
step 4: j-type stainless steel outside high-voltage winding by PET binding band the short side of the steel plate is fixedly bound with one side of the U-shaped stainless steel plate, the PET binding belt is fixed with a steel plate by a packing machine through stainless steel packing buckles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910410957.6A CN110085401B (en) | 2019-05-17 | 2019-05-17 | Amorphous alloy transformer winding framework with short circuit resistance and manufacturing method thereof |
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| CN201910410957.6A CN110085401B (en) | 2019-05-17 | 2019-05-17 | Amorphous alloy transformer winding framework with short circuit resistance and manufacturing method thereof |
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| CN110085401A CN110085401A (en) | 2019-08-02 |
| CN110085401B true CN110085401B (en) | 2024-04-09 |
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| CN101388279A (en) * | 2008-07-11 | 2009-03-18 | 中国科学院电工研究所 | Body of shell type amorphous alloy transformer |
| CN103680862A (en) * | 2013-12-11 | 2014-03-26 | 上海置信电气非晶有限公司 | Amorphous transformer rectangular wire-wound winding and manufacturing method thereof |
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| CN209804425U (en) * | 2019-05-17 | 2019-12-17 | 沈阳工业大学 | Amorphous alloy transformer winding framework with short circuit resistance |
Family Cites Families (1)
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| CN105244148B (en) * | 2015-10-30 | 2017-09-01 | 江苏华鹏变压器有限公司 | It is a kind of solve the problems, such as amorphous alloy transformer resistance to shorting from clamp structure |
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2019
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Patent Citations (11)
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| CN101388279A (en) * | 2008-07-11 | 2009-03-18 | 中国科学院电工研究所 | Body of shell type amorphous alloy transformer |
| CN203552893U (en) * | 2013-08-23 | 2014-04-16 | 衢州巨变电气设计有限公司 | Amorphous alloy transformer coil structure |
| CN103680862A (en) * | 2013-12-11 | 2014-03-26 | 上海置信电气非晶有限公司 | Amorphous transformer rectangular wire-wound winding and manufacturing method thereof |
| CN106611649A (en) * | 2015-10-23 | 2017-05-03 | 上海置信电气非晶有限公司 | Low-voltage winding skeleton of amorphous alloy transformer |
| CN105551773A (en) * | 2016-01-21 | 2016-05-04 | 王永法 | Anti-short-circuit transformer coil and preparation method therefor |
| CN105702424A (en) * | 2016-04-21 | 2016-06-22 | 佛山市中研非晶科技股份有限公司 | Amorphous-alloy oil-immersed transformer capable of noise reduction and short-circuit resistance and fabrication method of amorphous-alloy oil-immersed transformer |
| CN205845634U (en) * | 2016-07-28 | 2016-12-28 | 博罗达鑫电子有限公司 | Amorphous magnetic core flat wire is vertical around inductance |
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| CN107768111A (en) * | 2017-10-12 | 2018-03-06 | 安徽省神虹变压器股份有限公司 | A kind of machine body structure of the non-billon transformer of high resistance to shorting |
| CN209804425U (en) * | 2019-05-17 | 2019-12-17 | 沈阳工业大学 | Amorphous alloy transformer winding framework with short circuit resistance |
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| CN110085401A (en) | 2019-08-02 |
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