CN205080992U - Coil for oil -immersed transformer - Google Patents
Coil for oil -immersed transformer Download PDFInfo
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- CN205080992U CN205080992U CN201520929783.1U CN201520929783U CN205080992U CN 205080992 U CN205080992 U CN 205080992U CN 201520929783 U CN201520929783 U CN 201520929783U CN 205080992 U CN205080992 U CN 205080992U
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- coil
- oil
- insulating
- insulation
- filled transformer
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Abstract
The utility model discloses a coil for oil -immersed transformer, including coil body, coil body's an inboard fixed insulating ebonite section of thick bamboo that is provided with with covering with oil, fixed the linking to each other of low voltage coil that an insulating ebonite section of thick bamboo was equipped with rather than the outside, the high -pressure coil that low voltage coil's the outside was equipped with, leave the clearance between low voltage coil and the high -pressure coil to be equipped with the main empty insulation of saying in the clearance, low voltage coil links to each other through main sky way is insulating and high -pressure coil is fixed, low voltage coil and high -pressure coil's interior middle part all is provided with the intermediate layer to interbedded inside is provided with the insulating some adhesive tape of GS, low voltage coil and high -pressure coil's tip all leaves the clearance. This coil for oil -immersed transformer not only can play the insulation effect when the medium -term and long -term operation of oil, also have powerful machinery to the coil and support, can play insulating isolation, can satisfy anti burst short circuit's intensity demand, and the accessible heating cure was a whole after coil winding finished.
Description
Technical field
The utility model relates to transformer coil manufacturing technology field, is specially a kind of oil-filled transformer coil.
Background technology
Transformer utilizes the principle of electromagnetic induction to change the device of alternating voltage, main member is primary coil, secondary coil and magnetic core, circuit symbol commonly uses the beginning that T is used as numbering, and major function has: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilizing etc.Can be divided into by purposes: power transformer and special transformer, such as electric furnace change, rectification change, power frequency testing transformer, voltage regulator, mining change, audio frequency transformer, intermediate frequency transformer, high frequency transformer, impact transformer, instrument transformer, electronic transformer, reactor, instrument transformer etc.
Coil is needed to operate inside transformer.Divide by the number of phases: (1) single-phase transformer: for single-phase load and three phase transformers.(2) three-phase transformer: for the ascending, descending voltage of three-phase system.Divide by measure: the coil of miniature transformer is generally with the circular copper wire with insulation, and large-scale transformer is then with the flat type copper wire with insulating barrier.
There is following shortcoming in conventional coil, affects the anti-short circuit capability of transformer:
1, inner side adopts Xiang Shiyi millimeter cardboard to do liner, and cardboard is soft after oil immersion bubble, does not have mechanical strength, can only play insulating effect, do not have mechanical support to coil in oil during long-term operation.
2, coil interlayer insulating paper adopts multilayer 0. 08 millimeters of some gummed papers as insulation, and only play insulation buffer action, organically do not combined together by coil, coil overall mechanical strength is little.
3, end winding offset plate filler strip adopts offset plate filler strip, not as a whole with coil compound, and only play insulation buffer action, organically do not combined together by coil, coil overall mechanical strength is little.
Utility model content
The purpose of this utility model is to provide a kind of oil-filled transformer coil, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme: a kind of oil-filled transformer coil, comprise coil body, the inner side of described coil body is fixedly installed the insulation ebonite cylinder of useful oil immersion, described insulation ebonite cylinder and the low-voltage coil be provided with outside it are fixedly linked, the high-tension coil that the outside of described low-voltage coil is provided with, gap is left between described low-voltage coil and high-tension coil, and be provided with main empty path insulation in gap, described low-voltage coil is fixedly linked with high-tension coil by main empty path insulation, the interior middle part of described low-voltage coil and high-tension coil is provided with interlayer, and the inside of interlayer is provided with GS insulating point gummed paper, gap is all left in the end of described low-voltage coil and high-tension coil, and be filled with the glass fiber bundle of pre-epoxy resin dipping in gap, glass fiber bundle is all run through and the exposed two sides in coil body in the two ends of described GS insulating point gummed paper.
Preferably, described GS insulating point gummed paper comprises the soft complex of semi-solid preparation.
Preferably, complex is bonding forms by the modification gluing body in form diamond checks and electric insulation softness for the soft complex of described semi-solid preparation.
Preferably, described GS insulating point gummed paper also comprises the insulating paper of multilayer, and described insulating paper is positioned at the outer surface of the soft complex of semi-solid preparation, and insulating paper is bonding with modification gluing body and the soft complex of electric insulation respectively.
Preferably, the outer surface of described GS insulating point gummed paper is provided with antiskid thread.
Preferably, the thickness of described insulation ebonite cylinder is 12 millimeters.
Preferably, the end of described low-voltage coil and high-tension coil is also arranged with safety guard.
Preferably, the length of described glass fiber bundle is two millimeters.
Compared with prior art, the utility model has following beneficial effect:
(1), the utility model oil-filled transformer coil, inner side adopts item 12 millimeters insulation ebonite cylinder to do liner, offset plate is still hard after oil immersion bubble, there is enough mechanical strength support coils, in oil, not only can play insulating effect during long-term operation, to coil, also there is powerful mechanical support.
(2), the utility model oil-filled transformer coil, coil interlayer insulating paper adopts multilayer GS insulating point gummed paper as insulation, insulation buffer action can be played, coil organically can be combined together again, coil overall mechanical strength is large, the strength demand of anti-sudden short circuit can be met, GS insulating point gummed paper comprises the soft complex of semi-solid preparation, complex is bonding forms by the modification gluing body in form diamond checks and electric insulation softness for the soft complex of semi-solid preparation, during use, its coat is in coil dry run, fusing is started when uniform temperature, produce adhesive attraction, solidification is started again along with temperature raises, the neighboring layers of winding is made to be bonded into a solid unit reliably, the displacement of winding each layer when the bonding strength of epoxy resin is enough to prevent short circuit, thus ensure that the machinery that winding insulation structure is long-term and electric property.
(3), the utility model oil-filled transformer coil, the glass fiber bundle of the outer first coiling two millimeters of insulation ebonite cylinder pre-epoxy resin dipping afterwards, end winding is also filled with the glass fiber bundle of pre-epoxy resin dipping, the glass fiber bundle coiling of two millimeters of pre-epoxy resin dippings afterwards of coil outermost layer, as a whole by heating cure after coil winding, there is the mechanical strength of similar fiberglass.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model oil-filled transformer coil;
Fig. 2 is the part-structure schematic diagram of the GS insulating point gummed paper of the utility model oil-filled transformer coil.
In figure: 1 coil body, 2 insulation ebonite cylinders, 3 low-voltage coils, 4 high-tension coils, 5 main empty path insulation, 6GS insulating point gummed paper, the soft complex of 61 semi-solid preparations, 611 modification gluing bodies, 612 electric insulations soft complex, 62 insulating papers, 7 glass fiber bundles.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-2, the utility model provides a kind of technical scheme: a kind of oil-filled transformer coil, comprise coil body 1, the inner side of coil body 1 is fixedly installed the insulation ebonite cylinder 2 of useful oil immersion, the thickness of insulation ebonite cylinder 2 is 12 millimeters, insulation ebonite cylinder 2 and the low-voltage coil 3 be provided with outside it are fixedly linked, the high-tension coil 4 that the outside of low-voltage coil 3 is provided with, gap is left between low-voltage coil 3 and high-tension coil 4, and be provided with main empty path insulation 5 in gap, low-voltage coil 3 is fixedly linked with high-tension coil 4 by main empty path insulation 5, the interior middle part of low-voltage coil 3 and high-tension coil 4 is provided with interlayer, and the inside of interlayer is provided with GS insulating point gummed paper 6, GS insulating point gummed paper 6 comprises the soft complex 61 of semi-solid preparation, complex 612 is bonding forms by the modification gluing body 611 in form diamond checks and electric insulation softness for the soft complex 61 of semi-solid preparation, the outer surface of GS insulating point gummed paper 6 is provided with antiskid thread, GS insulating point gummed paper 6 is made up of the insulating paper 62 of multilayer, insulating paper 62 is positioned at the outer surface of the soft complex 61 of semi-solid preparation, and insulating paper 62 is bonding with modification gluing body 611 and the soft complex 612 of electric insulation respectively, gap is all left in the end of low-voltage coil 3 and high-tension coil 4, and be filled with the glass fiber bundle 7 of pre-epoxy resin dipping in gap, glass fiber bundle 7 is all run through and the exposed two sides in coil body 1 in the two ends of GS insulating point gummed paper 6, the length of glass fiber bundle 7 is two millimeters, the end of low-voltage coil 3 and high-tension coil 4 is also arranged with safety guard.
During use: this oil-filled transformer coil, inner side adopts item 12 millimeters insulation ebonite cylinder 2 to do liner, offset plate is still hard after oil immersion bubble, there is enough mechanical strengths and support low-voltage coil 3 and high-tension coil 4, not only insulating effect can be played during long-term operation in oil, to low-voltage coil 3 and high-tension coil 4, also there is powerful mechanical support, low-voltage coil 3 and high-tension coil 4 layer insulation paper adopt multilayer GS insulating point gummed paper 6 as insulation, insulation buffer action can be played, coil organically can be combined together again, low-voltage coil 3 and high-tension coil 4 overall mechanical strength large, the strength demand of anti-sudden short circuit can be met.GS insulating point gummed paper 6 comprises the soft complex 61 of semi-solid preparation, complex 612 is bonding forms by the modification gluing body 611 in form diamond checks and electric insulation softness for the soft complex 61 of semi-solid preparation, GS insulating point gummed paper 6 also comprises the insulating paper 62 of multilayer, insulating paper 62 is positioned at the outer surface of the soft complex 61 of semi-solid preparation, and insulating paper 62 is bonding with modification gluing body 611 and the soft complex 612 of electric insulation respectively, during use, its coat is in low-voltage coil 3 and high-tension coil 4 dry run, fusing is started when uniform temperature, produce adhesive attraction, solidification is started again along with temperature raises, the neighboring layers of winding is made to be bonded into a solid unit reliably, the displacement of winding each layer when the bonding strength of epoxy resin is enough to prevent short circuit, thus ensure that the machinery that winding insulation structure is long-term and electric property, the glass fiber bundle 7 of the outer first coiling two millimeters of insulation ebonite cylinder 2 pre-epoxy resin dipping afterwards, low-voltage coil 3 and high-tension coil 4 end are all also filled with the glass fiber bundle 7 of pre-epoxy resin dipping, glass fiber bundle 7 coiling of two millimeters of pre-epoxy resin dippings afterwards of low-voltage coil 3 and high-tension coil 4 outermost layer, as a whole by heating cure after low-voltage coil 3 and high-tension coil 4 coiling, there is the mechanical strength of similar fiberglass.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalents thereof.
Claims (8)
1. an oil-filled transformer coil, comprise coil body (1), it is characterized in that: the inner side of described coil body (1) is fixedly installed the insulation ebonite cylinder (2) of useful oil immersion, described insulation ebonite cylinder (2) and the low-voltage coil (3) be provided with outside it are fixedly linked, the high-tension coil (4) that the outside of described low-voltage coil (3) is provided with, gap is left between described low-voltage coil (3) and high-tension coil (4), and be provided with main empty path insulation (5) in gap, described low-voltage coil (3) is fixedly linked by main empty path insulation (5) and high-tension coil (4), the interior middle part of described low-voltage coil (3) and high-tension coil (4) is provided with interlayer, and the inside of interlayer is provided with GS insulating point gummed paper (6), gap is all left in the end of described low-voltage coil (3) and high-tension coil (4), and be filled with the glass fiber bundle (7) of pre-epoxy resin dipping in gap, glass fiber bundle (7) is all run through and the exposed two sides in coil body (1) in the two ends of described GS insulating point gummed paper (6).
2. a kind of oil-filled transformer coil according to claim 1, is characterized in that: described GS insulating point gummed paper (6) comprises the soft complex (61) of semi-solid preparation.
3. a kind of oil-filled transformer coil according to claim 2, is characterized in that: the soft complex (61) of described semi-solid preparation forms by the soft complex (612) of the modification gluing body (611) in form diamond checks and electric insulation is bonding.
4. a kind of oil-filled transformer coil according to claim 1, it is characterized in that: described GS insulating point gummed paper (6) also comprises the insulating paper (62) of multilayer, described insulating paper (62) is positioned at the outer surface of the soft complex (61) of semi-solid preparation, and insulating paper (62) is bonding with modification gluing body (611) and the soft complex (612) of electric insulation respectively.
5. a kind of oil-filled transformer coil according to claim 1, is characterized in that: the outer surface of described GS insulating point gummed paper (6) is provided with antiskid thread.
6. a kind of oil-filled transformer coil according to claim 1, is characterized in that: the thickness of described insulation ebonite cylinder (2) is 12 millimeters.
7. a kind of oil-filled transformer coil according to claim 1, is characterized in that: the end of described low-voltage coil (3) and high-tension coil (4) is also arranged with safety guard.
8. a kind of oil-filled transformer coil according to claim 1, is characterized in that: the length of described glass fiber bundle (7) is two millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520929783.1U CN205080992U (en) | 2015-11-20 | 2015-11-20 | Coil for oil -immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520929783.1U CN205080992U (en) | 2015-11-20 | 2015-11-20 | Coil for oil -immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205080992U true CN205080992U (en) | 2016-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520929783.1U Expired - Fee Related CN205080992U (en) | 2015-11-20 | 2015-11-20 | Coil for oil -immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205080992U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261463A (en) * | 2015-11-20 | 2016-01-20 | 济南清河电气有限公司 | Oil-immersed type transformer coil |
| CN108867152A (en) * | 2018-03-26 | 2018-11-23 | 江苏亚威变压器有限公司 | A kind of transformer insulating paper and preparation method thereof |
-
2015
- 2015-11-20 CN CN201520929783.1U patent/CN205080992U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261463A (en) * | 2015-11-20 | 2016-01-20 | 济南清河电气有限公司 | Oil-immersed type transformer coil |
| CN108867152A (en) * | 2018-03-26 | 2018-11-23 | 江苏亚威变压器有限公司 | A kind of transformer insulating paper and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160309 Termination date: 20171120 |