CN105097234A - Anti-short-circuit amorphous-alloy oil-immersed transformer and preparation method thereof - Google Patents
Anti-short-circuit amorphous-alloy oil-immersed transformer and preparation method thereof Download PDFInfo
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- CN105097234A CN105097234A CN201510497181.8A CN201510497181A CN105097234A CN 105097234 A CN105097234 A CN 105097234A CN 201510497181 A CN201510497181 A CN 201510497181A CN 105097234 A CN105097234 A CN 105097234A
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- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 123
- 239000003822 epoxy resin Substances 0.000 claims abstract description 58
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 58
- 239000004744 fabric Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004020 conductor Substances 0.000 claims description 30
- 238000007654 immersion Methods 0.000 claims description 19
- 239000004593 Epoxy Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000011888 foil Substances 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract 1
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- 239000010410 layer Substances 0.000 description 107
- 239000003365 glass fiber Substances 0.000 description 11
- 239000003921 oil Substances 0.000 description 10
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- 239000011247 coating layer Substances 0.000 description 2
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- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
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- 238000007598 dipping method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- -1 promoter Substances 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Abstract
The invention relates to an anti-short-circuit amorphous-alloy oil-immersed transformer which comprises coils and iron cores. Each coil sequentially comprises a framework, an inner-layer winding, a main empty path and an outer-layer winding from inside to outside, the framework adopts an insulating support with a certain thickness, the insulating support is formed by flattening a grid cloth evenly coated with gel-state epoxy resin or winding DMD coated with epoxy resin adhesives on a mould, and gaps of the inner-layer winding and gaps between the inner-layer winding and the insulating support are filled with epoxy resin. The invention further relates to a preparation method of the transformer. According to the method, the inner-layer windings are closely connected with the frames in an adhering mode, therefore, the higher mechanical strength and anti-short-circuit capacity are achieved, and the service life of the transformer is improved; insulating tapes are adopted to bind the inner-layer windings and the outer-layer windings into a whole, when short-circuit force occurs, the inner short-circuit force and the outer short-circuit force can cancel each other out, therefore, the overall anti-short-circuit capacity of the inner-layer windings and the outer-layer windings is improved, the production cost is lowered, and the production efficiency is improved.
Description
Technical field
The present invention relates to distribution transformer technical field, specifically refer to a kind of Short Circuit withstand amorphous alloy oil immersion type transformer, the invention still further relates to the preparation method of above-mentioned transformer.
Background technology
Amorphous alloy transformer to enjoy the welcome of power department client because of its no-load loss compared with ordinary silicon steel disc iron-core transformer low 60 ~ 80%, state's net started large scale application amorphous alloy transformer from 2010, at present, amorphous alloy transformer substantially achieves comprehensively universal in distribution transformer.But due to reasons in structure, the anti-short circuit capability of amorphous alloy transformer still can not meet power grid user requirement, the sturdy power grid requirement of particularly Guo Wang company proposition, amorphous alloy transformer is given prominence to gradually in the defect of Short Circuit withstand aspect of performance.
At present, amorphous alloy transformer structure common on market is drum type brake winding construction, the short-circuit force with the transformer of drum type brake winding construction be internal layer winding shows width to power inwardly and axial force in the middle of winding, outer winding shows as width to power outwards and axial force to winding two ends, but winding is exoskeletal in general, winding not axially compacting and width to holding tightly, cause its anti-short circuit capability poor, during transformer short-circuit, low-voltage coil is to internal strain, high-tension coil axial deformation, and then cause transformer to burn.
In order to improve amorphous alloy transformer anti-short circuit capability, general producer adopts the skeleton that 6 ~ 10mm is thick during winding within preparing, coated glass fiber tape on winding outside, and to the process of winding dipping lacquer, finally by folder, inside and outside winding is compressed to the anti-short circuit capability improving transformer, but such preparation method's cost is higher, make inconvenience.
In addition, application publication number is that the Chinese invention patent application " a kind of amorphous transformer rectangular lines is around winding and manufacture method thereof " (application number: CN201310674485.8) of CN103680862A discloses a kind of method, although its outer winding have employed axial tightening, but junction does not have gluing, easily collapse out during short circuit, and do not avoid oil duct, easily affect the heat sinking function of transformer; Due to not bonding between its wire, depend merely on several places axial tightening limited efficiency; Meanwhile, the Short Circuit withstand problem solving interior winding is not had.For another Chinese utility model patent " transformer coil frame structure " (application number: CN201120542427.6) that Authorization Notice No. is CN202454411U, although provide the skeleton of interior winding, but because skeleton prefabricatedly carries out solidification, interior winding around above can not with its adhesion, and due to winding be all generally minor face one direction press curing, cause the winding of long side direction to be loose, when being subject to short-circuit force, winding is yielding, thus reduces the useful life of transformer.
Therefore, for the structure and preparation method thereof of current Short Circuit withstand amorphous alloy oil immersion type transformer, await doing further improvement.
Summary of the invention
Technical problem to be solved by this invention is the present situation for prior art, provides that a kind of mechanical strength is high, anti-short circuit capability good and the Short Circuit withstand amorphous alloy oil immersion type transformer of long service life.
Another technical problem to be solved by this invention is the present situation for prior art, and provide a kind of preparation method of above-mentioned Short Circuit withstand amorphous alloy oil immersion type transformer, the method technique is simple, preparation cost is low and preparation efficiency is high.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of Short Circuit withstand amorphous alloy oil immersion type transformer, the iron core comprising coil and match with this coil, described coil comprises skeleton, internal layer winding, main empty path and outer winding from inside to outside successively, it is characterized in that: described skeleton is with certain thickness insulating support, this insulating support is wound on mould by insulating material, is all filled with epoxy resin in the gap in the gap of described internal layer winding self and between internal layer winding and insulating support.
Preferably, described insulating material refers to evenly be coated with the grid cloth pressure of gel state epoxy resin or the DMD of precoating epoxide-resin glue.DMD is specially the soft composite insulating foil of polyester film and polyester fibre non woven fabric, is the three-layer insulated material be composited by two layers polyester nonwoven fabrics therebetween one deck insulation polyester film.
Preferably, the thick 2 ~ 6mm of described insulating support.This insulating support can make up the defect that internal layer winding and skeleton can not effectively bond, and makes internal layer winding and skeleton form mixed solid steel body, thus increases substantially the mechanical strength of transformer.
As preferably, described internal layer winding comprises multiple mutually stacked first module layer, and this first module layer comprises conductor layer No.1, first insulating paper layer of arranging from inside to outside.If wire be not foil need at conductor layer No.1 appearance coating gel state epoxy resin.Said structure makes internal layer winding form a firm entirety, and mechanical strength effectively improves.
As preferably, described outer winding comprises multiple mutually stacked second unit layer, and this second unit layer comprises the second conductor layer, the second epoxy resin layer, the second insulating paper layer and the some gummed paper layer arranged from inside to outside; The two ends of described second conductor layer are respectively by epoxy resin bar end-blocking.Adopt said structure, epoxy resin fills up the gap of turn-to-turn wire, and makes outer winding form a firm entirety by the second insulating paper layer and some gummed paper layer, substantially increases the mechanical strength of outer winding.
In order to improve the mechanical strength of outer winding further, the outer surface of described outer winding is coated with insulating barrier, and this insulating barrier is preferably alkali-free glass fibre band or is coated with the grid cloth of gel epoxy resin.
As improvement, the long limit of described coil has the insulating tape that internal layer winding and outer winding can be fastenedly connected along short transverse coiling, this insulating tape is preferably alkali-free glass fibre band.Adopt this structure, after internal layer winding, main empty path and the equal coiling of outer winding, with alkali-free glass fibre band by as a whole for the binding of internal layer winding, main empty path and outer winding, further enhancing the overall anti-short circuit capability of transformer.
In above-mentioned each scheme, the retainer ring that described transformer also comprises upper clamping piece, lower clamping piece and is located on lower clamping piece, described coil and iron core are located between upper clamping piece and lower clamping piece, the minor face of described coil have the drawstring along short transverse coiling, and the lower end of this drawstring is connected with described retainer ring.The material of described drawstring is preferably alkali-free glass fibre band, it can certainly be the insulating material of other high strength, utilizing drawstring to be fixed on lower clamping piece by coil, without the need to placing cushion block as in prior art between coil and lower clamping piece, making the preparation process of transformer simpler; And still can there is certain rocking between coil and lower clamping piece after placing cushion block in prior art, and in the present invention, drawstring and lower clamping piece adopt tension-type to fix, after having assembled, coil fixation between folder from top to bottom, has good mechanical strength.
A preparation method for Short Circuit withstand amorphous alloy oil immersion type transformer, is characterized in that comprising the following steps:
(1) epoxy resin of gel state to be evenly coated on grid cloth and flatten obtain with the flexible mesh cloth of epoxy resin or on DMD precoating epoxy resin, the DMD of this flexible mesh cloth or precoating epoxy resin is held the insulating support that several layers form specific thickness on mould;
(2) at the periphery coiling internal layer winding of above-mentioned insulating support, be specially: coiling one deck conductor layer No.1, then in conductor layer No.1 outer cladding one deck first insulating paper layer; As the first ring epoxy layer that need apply gel state between conductor layer No.1, the first insulating paper layer that wire is not foil.Repeat above-mentioned steps until internal layer winding reaches setting specification; Internal layer winding is inwardly extruded respectively from the vertical direction in internal layer winding four faces, the four sides of internal layer winding is made to be bonded as one respectively with insulating support, after extruding, filling epoxy resin in gap in the gap of internal layer winding self and between internal layer winding and insulating support, then moves into heating epoxy resin cure in drying room;
(3) at the periphery coiling main empty path of above-mentioned internal layer winding, be specially: the some gummed paper of first coiling specified quantity, described in then coiling aspect ratio, put the crimped paper of the large 50 ~ 120mm of gummed paper height, finally the some gummed paper of coiling specified quantity again;
(4) at the outer winding of the periphery coiling of above-mentioned main empty path, be specially: coiling one deck second conductor layer, then the second epoxy resin layer of layer of gel shape is applied outward at the second conductor layer, again at this second epoxy resin layer periphery successively coated one deck insulating paper and one deck point gummed paper, then place epoxy resin bar end-blocking at the two ends of the second conductor layer, repeat above-mentioned steps until outer winding reaches setting specification; From short side direction, given size is squeezed to outer winding, then moves in drying room and be heated to gelatinous epoxy resin cure, after having solidified, take off mould;
(5) place C shape dividing plate respectively in the both sides on the long limit of coil, then amorphous core is inserted in corresponding coil, then coil and iron core are contained between upper clamping piece and lower clamping piece.
As improvement, after outer winding technique completes described in step (4), take off mould, be wound around one deck with insulating tape along the long limit of short transverse coiling, then load mould, then extrude.Adopt this structure, in advance outer winding and internal layer winding are bundled as a whole, the mechanical strength of transformer can be improved.
Improve, before step (5) is carried out, be first wound around at least one deck with drawstring along the minor face of short transverse coiling, the two ends of this drawstring grow in coil bottom, after step (5) completes, are fastened on the retainer ring of lower clamping piece at the two ends of drawstring again.Such installation method without the need to using cross-over block, and does not need to compress further coil when assembling, and simplifies the structure and step of preparation process, reduces cost, improve efficiency.
Compared with prior art, the invention has the advantages that:
In transformer of the present invention, internal layer winding can be bonding as a whole under extruding force with insulating support, extruding after internal layer winding each layer between and often there is certain gap between internal layer winding and insulating support, the present invention is filled with epoxy resin in this gap, make internal layer winding bonding with between insulating support closely, transformer is possessed higher mechanical strength and anti-short circuit capability, thus improve the useful life of transformer;
Transformer of the present invention in the preparation, first on insulating support, be wound with internal layer winding, and after internal layer winding technique, first carry out four sides to compress, then gel filled shape epoxy resin in the gap in the gap of internal layer winding self and between internal layer winding and insulating support also solidifies, this step makes internal layer winding and skeleton be formed as a firm entirety, substantially increases the anti-short circuit capability of internal layer winding;
During coiling skin winding, every coiling one layer conductor, on wire, all apply the epoxy resin of layer of gel shape, outer winding is made to form a firm entirety after this gelatinous epoxy resin cure, there is higher mechanical strength, and compress from short side direction after outer winding technique, thus substantially increase the anti-short circuit capability of outer winding;
Meanwhile, the present invention adopts alkali-free glass fibre band to bundle as a whole by outer winding and internal layer winding, and when short-circuit force comes time, inside and outside short-circuit force can be cancelled out each other like this, thus considerably increases the anti-short circuit capability of inside and outside integral;
Preparation method of the present invention is simple, easy to assembly, reduces production cost to a certain extent, improves production efficiency.
Accompanying drawing explanation
Fig. 1 is the front view of the embodiment of the present invention;
Fig. 2 is the vertical view of the embodiment of the present invention;
Fig. 3 is the structural representation of embodiment of the present invention coil;
Fig. 4 is the section structure schematic diagram of first module layer in the embodiment of the present invention;
Fig. 5 is the section structure schematic diagram of second unit layer in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Fig. 1 ~ 5, the retainer ring 5 that the Short Circuit withstand amorphous alloy oil immersion type transformer of the present embodiment comprises coil 1, unshakable in one's determination 2, upper clamping piece 3, lower clamping piece 4 and is located on lower clamping piece 4.Iron core 2 and the inserting of coil 1 phase, the coil 1 of the present embodiment comprises skeleton 11, internal layer winding 13, main empty path 14 and outer winding 15 from inside to outside successively, skeleton 11 is with certain thickness insulating support, this insulating support is wound after being flattened by the grid cloth of epoxy resin or the DMD of precoating epoxy resin that are evenly coated with gel state on mould, the thick 2 ~ 6mm of the insulating support in the present embodiment.Epoxy resin is filled with in gap between internal layer winding 13 and insulating support.
In the present embodiment, internal layer winding 13 comprises multiple mutually stacked first module layer 130, and as shown in Figure 4, this first module layer 130 comprises conductor layer No.1 131, first insulating paper layer 133 of arranging from inside to outside; As wire be not foil need in conductor layer No.1 appearance coating gel state first ring epoxy layer 132, outer winding 15 comprises multiple mutually stacked second unit layer 150, as shown in Figure 5, this second unit layer 150 comprises second conductor layer 151, second epoxy resin layer 152, second insulating paper layer 153 and some gummed paper layer 154 of arranging from inside to outside, and the two ends of the second conductor layer 151 are respectively by epoxy resin bar 155 end-blocking.Outer winding 15 go back the grid cloth that outer surface is coated with alkali-free glass fibre band or is coated with gel epoxy resin.Above-mentioned first insulating paper layer 133 and the second insulating paper layer 153 are DMD epoxy preimpregnation material.
As shown in Figure 3, the long limit of coil 1 has the first alkali-free glass fibre band 16 that internal layer winding 13 and outer winding 15 can be fastenedly connected along short transverse coiling, after internal layer winding 13, main empty path 14 and outer winding 15 all coiling, internal layer winding 13, main empty path 14 and outer winding 15 bundle as a whole by this first alkali-free glass fibre band 16, when short-circuit force comes time, inside and outside short-circuit force can be cancelled out each other, thus considerably increases the anti-short circuit capability of inside and outside integral.
As shown in Figure 1, 2, coil 1 and unshakable in one's determination 2 is located between upper clamping piece 3 and lower clamping piece 4, and the minor face of coil 1 has the drawstring 6 along short transverse coiling, the lower end of this drawstring 6 is connected with retainer ring 5.The material of drawstring 6 can be alkali-free glass fibre band, it can certainly be the insulating material of other high strength, utilizing drawstring 6 to be fixed on lower clamping piece 4 by coil 1, without the need to placing cushion block as in prior art between coil 1 and lower clamping piece 4, making the preparation process of transformer simpler; And still can there is certain rocking between coil 1 and lower clamping piece 4 after placing cushion block in prior art, and in the present embodiment, drawstring 6 and lower clamping piece 4 adopt tension-type to fix, after having assembled, coil 1 fixation between folder from top to bottom, has good mechanical strength.
In the present embodiment, the preparation method of Short Circuit withstand amorphous alloy oil immersion type transformer comprises the following steps:
(1) epoxy resin of gel state to be evenly coated on grid cloth and to flatten the flexible mesh cloth obtained with epoxy resin, or on DMD precoating epoxy resin, the DMD of above-mentioned flexible mesh cloth or precoating epoxy resin is wound around on mould and holds several layers and form the thick insulating support of 2 ~ 6mm;
(2) at the periphery coiling internal layer winding 13 of above-mentioned insulating support, be specially: coiling one deck conductor layer No.1 131, then in conductor layer No.1 131 periphery coated one deck first insulating paper layer 133, if wire is not foil, then first in the first ring epoxy layer 132 of conductor layer No.1 131 outer coating layer of gel shape, coated one deck first insulating paper layer 133, then repeats above-mentioned steps until internal layer winding 13 reaches setting specification in this first ring epoxy layer 132 again; Internal layer winding 13 is inwardly extruded respectively from the vertical direction in internal layer winding 13 4 faces, the four sides of internal layer winding 13 is made to be bonded as one respectively with insulating support 11, after extruding, filling epoxy resin in gap in the gap of internal layer winding 13 self and between internal layer winding and insulating support, then moves in drying room and is heated to epoxy resin cure;
(3) at the periphery coiling main empty path 14 of above-mentioned internal layer winding 13, be specially: first coiling 2 ~ 6 some gummed papers, then the crimped paper of coiling 1 ~ 3 large 50 ~ 120mm of aspect ratio point gummed paper height, finally coiling 2 ~ 6 some gummed papers again;
(4) at the outer winding 15 of the periphery coiling of above-mentioned main empty path 14, be specially: coiling one deck second conductor layer 151, then at the second epoxy resin layer 152 of the second conductor layer 151 outer coating layer of gel shape, coated one deck first insulating paper 153 and one deck first gummed paper 154 successively in this second epoxy resin layer 152 periphery again, then place epoxy resin bar 155 end-blocking at the two ends of the second conductor layer 151, repeat above-mentioned steps until outer winding 15 reaches setting specification; Take off mould, be wound around one deck with the first alkali-free glass fibre band 16 along the long limit of short transverse coiling 1, then load mould, from short side direction, given size is squeezed to outer winding, then move in drying room and be heated to gelatinous epoxy resin cure, after having solidified, take off mould;
(5) at least one deck is wound around with drawstring 6 along the minor face of short transverse coiling 1, the two ends of this drawstring 6 grow bottom coil 1, C shape dividing plate 7 is placed respectively in the both sides on the long limit of coil 1, then amorphous core 2 is inserted in corresponding coil 1, be exposed to the iron core 3 point gummed paper encapsulating at coil 1 two ends, then coil 1 and unshakable in one's determination 3 are contained between upper clamping piece 3 and lower clamping piece 4, the two ends of drawstring 6 are fastened on the retainer ring 5 of lower clamping piece 4.
In above-mentioned preparation method, the gel epoxy resin used refers to epoxy resin, curing agent, promoter, silicon powder to be mixed according to weight ratio 1:1:0.1:2 ~ 3 and be heated to 75 ~ 85 DEG C and stirs 0.5 ~ 2h to fully mixing, be warming up to 85 ~ 130 DEG C of insulations again to not having mobility, this is conventional manufacture method.
Claims (10)
1. a Short Circuit withstand amorphous alloy oil immersion type transformer, the iron core comprising coil and match with this coil, described coil comprises skeleton, internal layer winding, main empty path and outer winding from inside to outside successively, it is characterized in that: described skeleton is with certain thickness insulating support, this insulating support is wound on mould by insulating material, is all filled with epoxy resin in the gap in the gap of described internal layer winding self and between internal layer winding and insulating support.
2. Short Circuit withstand amorphous alloy oil immersion type transformer according to claim 1, is characterized in that: described insulating material is the grid cloth of the epoxy resin being evenly coated with gel state or the DMD of precoating epoxide-resin glue.
3. Short Circuit withstand amorphous alloy oil immersion type transformer according to claim 1, is characterized in that: described internal layer winding comprises multiple mutually stacked first module layer, and this first module layer comprises conductor layer No.1, first insulating paper layer of arranging from inside to outside.
4. Short Circuit withstand amorphous alloy oil immersion type transformer according to claim 1, it is characterized in that: described outer winding comprises multiple mutually stacked second unit layer, this second unit layer comprises the second conductor layer, the second epoxy resin layer, the second insulating paper layer and the some gummed paper layer arranged from inside to outside; The two ends of described second conductor layer are respectively by epoxy resin bar end-blocking.
5. Short Circuit withstand amorphous alloy oil immersion type transformer according to claim 4, is characterized in that: the outer surface of described outer winding is coated with insulating barrier.
6. the Short Circuit withstand amorphous alloy oil immersion type transformer according to claim arbitrary in Claims 1 to 5, is characterized in that: the long limit of described coil has the insulating tape that internal layer winding and outer winding can be fastenedly connected along short transverse coiling.
7. the Short Circuit withstand amorphous alloy oil immersion type transformer according to claim arbitrary in Claims 1 to 5, it is characterized in that: the retainer ring also comprising upper clamping piece, lower clamping piece and be located on lower clamping piece, described coil and iron core are located between upper clamping piece and lower clamping piece, the minor face of described coil has the drawstring along short transverse coiling, the lower end of this drawstring is connected with described retainer ring.
8. a preparation method for Short Circuit withstand amorphous alloy oil immersion type transformer, is characterized in that comprising the following steps:
(1) epoxy resin of gel state to be evenly coated on grid cloth and flatten obtain with the flexible mesh cloth of epoxy resin or on DMD precoating epoxy resin, the DMD of above-mentioned flexible mesh cloth or precoating epoxy resin is wound on mould the insulating support of specific thickness;
(2) at the periphery coiling internal layer winding of above-mentioned insulating support, be specially: coiling one deck conductor layer No.1, then in conductor layer No.1 periphery coated one deck first insulating paper layer, if wire is not foil, the first ring epoxy layer of layer of gel shape is then first applied outward at conductor layer No.1, coated one deck first insulating paper layer again, repeats above-mentioned steps until internal layer winding reaches setting specification; Internal layer winding is inwardly extruded respectively from the vertical direction in internal layer winding four faces, the four sides of internal layer winding is made to be bonded as one respectively with insulating support, after extruding, filling epoxy resin in gap in the gap of internal layer winding self and between internal layer winding and insulating support, then moves in drying room and is heated to epoxy resin cure;
(3) at the periphery coiling main empty path of above-mentioned internal layer winding, be specially: the some gummed paper of first coiling specified quantity, described in then coiling aspect ratio, put the crimped paper of the large 50 ~ 120mm of gummed paper height, finally the some gummed paper of coiling specified quantity again;
(4) at the outer winding of the periphery coiling of above-mentioned main empty path, be specially: coiling one deck second conductor layer, then the second epoxy resin layer of layer of gel shape is applied outward at the second conductor layer, again at this second epoxy resin layer periphery successively coated one deck insulating paper and one deck point gummed paper, then place epoxy resin bar end-blocking at the two ends of the second conductor layer, repeat above-mentioned steps until outer winding reaches setting specification; From short side direction, given size is squeezed to outer winding, then moves in drying room and be heated to gelatinous epoxy resin cure, after having solidified, take off mould;
(5) place C shape dividing plate respectively in the both sides on the long limit of coil, then amorphous core is inserted in corresponding coil, then coil and iron core are contained between upper clamping piece and lower clamping piece.
9. the preparation method of Short Circuit withstand amorphous alloy oil immersion type transformer according to claim 8, it is characterized in that: after described in step (4), outer winding technique completes, take off mould, one deck is wound around along the long limit of short transverse coiling with insulating tape, then load mould, then extrude.
10. the preparation method of Short Circuit withstand amorphous alloy oil immersion type transformer according to claim 8, it is characterized in that: before step (5) is carried out, first be wound around at least one deck with drawstring along the minor face of short transverse coiling, the two ends of this drawstring grow in coil bottom, after step (5) completes, the two ends of drawstring are fastened on the retainer ring of lower clamping piece.
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| CN201510497181.8A CN105097234B (en) | 2015-08-13 | 2015-08-13 | Preparation method for anti-short-circuit amorphous-alloy oil-immersed transformer |
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| CN111029113A (en) * | 2019-12-30 | 2020-04-17 | 孙崇山 | Novel process structure and binding method for short-circuit-resistant electrodynamic force of transformer winding |
| US10902996B2 (en) * | 2015-10-30 | 2021-01-26 | Jiangsu Huapeng Transformer Co., Ltd. | Self-clamping structure for solving short-circuit resistance problem of amorphous alloy transformers |
| CN112309707A (en) * | 2020-10-26 | 2021-02-02 | 苏州速尼科测试设备有限公司 | Preparation process of driving coil |
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| WO2022099791A1 (en) * | 2020-11-10 | 2022-05-19 | 佛山市欧立电子有限公司 | Foil-wound transformer |
| CN115621039A (en) * | 2022-12-06 | 2023-01-17 | 扬州华鼎电器有限公司 | Manufacturing method of short-circuit-resistant three-dimensional triangular wound core oil-immersed transformer |
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| CN106098330A (en) * | 2016-08-18 | 2016-11-09 | 宁波新胜中压电器有限公司 | The winding construction of transformator and device body and the method producing this winding construction |
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| CN108806924B (en) * | 2017-05-05 | 2024-01-23 | 特变电工智能电气有限责任公司 | Short-circuit-resistant amorphous alloy transformer and manufacturing method thereof |
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| CN112309707A (en) * | 2020-10-26 | 2021-02-02 | 苏州速尼科测试设备有限公司 | Preparation process of driving coil |
| WO2022099791A1 (en) * | 2020-11-10 | 2022-05-19 | 佛山市欧立电子有限公司 | Foil-wound transformer |
| CN115621039A (en) * | 2022-12-06 | 2023-01-17 | 扬州华鼎电器有限公司 | Manufacturing method of short-circuit-resistant three-dimensional triangular wound core oil-immersed transformer |
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