CN107993816A - A kind of SCB types dry-type transformer - Google Patents
A kind of SCB types dry-type transformer Download PDFInfo
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- CN107993816A CN107993816A CN201711385411.7A CN201711385411A CN107993816A CN 107993816 A CN107993816 A CN 107993816A CN 201711385411 A CN201711385411 A CN 201711385411A CN 107993816 A CN107993816 A CN 107993816A
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- coil
- scb
- dry
- type transformer
- insulation
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- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 11
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- 238000004519 manufacturing process Methods 0.000 abstract description 23
- 238000013461 design Methods 0.000 abstract description 15
- 229920006267 polyester film Polymers 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 7
- 238000012797 qualification Methods 0.000 abstract description 6
- 239000011810 insulating material Substances 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000006227 byproduct Substances 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 26
- 239000010410 layer Substances 0.000 description 22
- 238000009826 distribution Methods 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
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- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
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- 239000011521 glass Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
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- 230000009467 reduction Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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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
-
- 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
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- 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
The invention belongs to electric apparatus technical field, discloses a kind of SCB types dry-type transformer, be provided with six coils and join end to end etc.；Wire insulation of the present invention uses the double glazing silk of insulation thickness 0.3mm, and the processing and fabricating expense of this wire insulation is higher.The present invention uses six sections of technique for coiling, has canceled this part of layer insulation, has directly made the polyester film and layer of non-woven fabric around the 0.05mm that double-bags, total insulation thickness 0.4mm in conducting wire；SCB type partial discharge of dry-type transformer detection values are controlled in below 5pc excellent measures；Six sections of coiling designs are taken, by product partial discharge quantity qualification rate lifting to more than 99%；By using polyester film and non-woven fabrics as the direct canoe of insulating materials, by layer insulation capability improving to more than 6000V；Production cost reduces by more than 20%.
Description
Technical field
The invention belongs to electric apparatus technical field, more particularly to a kind of SCB types dry-type transformer.
Background technology
At present,《2013-2017 China's dry-type transformer industry market requirement forecastings and investment strategy planning application report
Accuse》It has been shown that, China have become dry in the world and have sold of one's property the most salable country so far.External various high and low voltage electrical equipments production at present
Product, in occupation of some domestic staple markets, only dry-type transformer after at the end of the 20th century, almost again not from foreign countries into
Mouthful, in emphasis invention and Important Project at home, it is difficult to find the external dry trace become.Currently, urban and rural power grids pace of construction accelerates,
China's generated energy and power consumption are growing day by day.Typically, the generated energy of 1kW is often increased, it is necessary to which the transformer for increasing 11kVA is total
Capacity.It is estimated that dry-type distribution transformer accounts for the 1/5-1/4 of whole distribution transformers.Pulled, become by power grid construction investment
Depressor Industrial Cycle degree is higher, after 2010 yield by keep 20% or so speedup.According to historical experience and transformer electricity
Hierarchical organization change is pressed, distribution transformer ratio is 40% or so, and according to 40% ratio calculating, this year, China increased dry type change newly
Depressor yield will be up to 200,000,000 KVA or so.
In the past 20 years, with the development of world economy, dry become achieves swift and violent development in the whole world, especially in distribution
In transformer, it is more and more big to do the ratio for becoming shared, according to statistics, in the developed countries such as America and Europe, it accounted for distribution transforming 40~
50%.In China, 50% or so is accounted for.From yield, China is done from after 1989 second urban network restructuring meeting
The yield of formula transformer has significant growth, from the 1990s, shows 20% or so speed increase greatly every year,
The total output of 1999 has approached 10,000 MVA (value greatly exceed 10 years before predict 4,005 MVA), and 2002 years total
Yield is up to 20,000 MVA, and 2004 up to 30,000 2 thousand MVA.Such speedup, is also unprecedented in the world.
From above-mentioned data as it can be seen that China has become dry type in the world and sells of one's property one of the most salable country at present, no matter
Plant layout, the capacity of product, voltage etc. are in world lead level.
But since the design of China's dry-type transformer and manufacturing process backwardness, traditional design structure and production technology restrict
Production cost reduces and the lifting of product reliability.So it is badly in need of being innovated in product design and manufacture view.
In conclusion problem existing in the prior art is：China's dry-type transformer design falls behind with manufacturing process, and tradition is set
Meter structure and production technology constrain production cost reduction and the lifting of product reliability.So it is badly in need of in product design and manufacture
Aspect is innovated.
The content of the invention
In view of the problems of the existing technology, the present invention provides a kind of SCB types dry-type transformer.
The present invention is achieved in that a kind of SCB types dry-type transformer, is provided with first coil, the second coil, the 3rd line
Circle, the 4th coil, the 5th coil, the 6th coil and head and the tail connect；The first coil, the second coil, tertiary coil, the 4th line
Circle, the 5th coil, the 6th coil are equipped with two layers polyester film and layer of non-woven fabric between each other.
The present invention uses six sections of coilings, has canceled this part of layer insulation, directly makes in conducting wire around double-baging
The polyester film and layer of non-woven fabric of 0.05mm, total insulation thickness 0.4mm.
Further, the first coil joins end to end with the second coil, and the second coil is connected with tertiary coil tail tail.
Further, the 6th coil joins end to end with the 5th coil, and the 5th coil is connected with the 4th coil tail tail.
Further, the tertiary coil draws the first binding post, the 3rd binding post, the 5th binding post respectively.
Further, the 4th coil draws the second binding post, the 4th binding post, the 6th binding post respectively.
Further, the first coil draws A (B, C) binding post, the 6th coil draws X (Y, Z) binding post.
Advantages of the present invention and good effect are：The SCB type dry-type transformers, by SCB type partial discharge of dry-type transformer
Detection values are controlled in below 5pc excellent measures.Six sections of coiling designs are taken, the lifting of product partial discharge quantity qualification rate is arrived
More than 99%.By using polyester film and non-woven fabrics as the direct canoe of insulating materials, by layer insulation capability improving
To more than 6000V.By varying manufacture craft, production cost is reduced by more than 20%.
In terms of product structure design：The four sections of high-tension coil coiling designs of traditional dry-type transformer are overturned, according to product
Voltage class and parameter request be changed to six sections and the coiling of the above multistage design.By between conducting wire voltage between layers control 300V with
It is interior so that the voltage of whole coil can be uniformly distributed, and substantially reduce electric charge undue concentration, so that the part for effectively reducing product is put
It is electric horizontal.
In terms of product manufacture：In traditional four sections of technique for coiling, high-tension coil is using DMD composite polyester materials as layer
Between insulate, general thickness 0.2-0.4mm, material price is also cheap.Wire insulation is then using the double of insulation thickness 0.3mm
Layer glass fiber, the processing and fabricating expense of this wire insulation are higher.New process uses six sections of technique for coiling, has canceled interlayer
Insulate this part, directly make the polyester film and layer of non-woven fabric around the 0.05mm that double-bags, total insulation thickness in conducting wire
0.4mm.Single-layer polyester film can pressure-resistant more than 3000V, greatly improve the dielectric strength and compression strength of conducting wire, reduce because of office
Portion, which discharges, causes the possibility of insulation breakdown.Non-woven fabrics is easily infiltrated in epoxy resin, it is easier to resin-bonded, formed with
The entirety of machine.Consider that non-woven membrane bag flat type copper wire is about the half of glass silk-covered copper wire processing charges from processing charges.Removed layers
Between the high-tension coil that insulate, the axial outside diameter of coil reduces, and the consumption of material also will be reduced accordingly.The performance of product is had
The raising of effect, and correspondingly reduce cost of manufacture.
The present invention passes through in optimization dry-type transformer product design scheme, using new material, adopt new technology etc.
Analysis, to reach reduction production cost, reduces partial discharge of dry-type transformer amount, improves product qualification rate and operational reliability
Purpose.
On the basis of existing four sections of high-tension coil coilings of SCB types dry-type transformer, the winding method design of analysis multistage will
Voltage between layers is controlled within 300V so that the voltage of whole coil can be uniformly distributed, and electric charge undue concentration be reduced, so as to set
The partial discharge quantity of product is effectively reduced on meter.
In terms of using new material, determine how to reduce the production cost of the high-voltage line of traditional four sections of coilings.Six sections of experiment
Technique for coiling, using polyester film and non-woven fabrics as insulating materials, improves the dielectric strength and compression strength of conducting wire, reduces
Because shelf depreciation causes the possibility of insulation breakdown, while reduce production cost.
In terms of improving production efficiency, when overcoming four sections of coilings, it will often stop around complete one layer and be laid with layer insulation material
Expect, the problems such as efficiency is low.Six sections of continuous coiling modes are tested, are combined together insulating materials is organic with conducting wire, reduce centre
Link, improves production efficiency.
The expected technical indicator reached of invention：SCB type partial discharge of dry-type transformer detection values are controlled in below 5pc
Excellent measure.Six sections of coiling designs are taken, by product partial discharge quantity qualification rate lifting to more than 99%.By using polyester
Film and non-woven fabrics are as the direct canoe of insulating materials, by layer insulation capability improving to more than 6000V.By varying making
Technique, more than 20% is reduced by production cost.
Brief description of the drawings
Fig. 1 is the structure diagram of SCB types dry-type transformer provided in an embodiment of the present invention；
In figure：1st, the first binding post；2nd, the second binding post；3rd, the 3rd binding post；4th, the 4th binding post；5th, the 5th wiring
Column；6th, the 6th binding post；7th, A (B, C) binding post；8th, X (Y, Z) binding post；9th, first coil；10th, the second coil；11st, the 3rd
Coil；12nd, the 4th coil；13rd, the 5th coil；14th, the 6th coil.
Embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and coordinate attached drawing
Describe in detail as follows.
The structure of the present invention is explained in detail below in conjunction with the accompanying drawings.
Fig. 1, SCB types dry-type transformer provided in an embodiment of the present invention is different from traditional transformer, and traditional transformer uses
Four sections around form, the transformer using six sections around form.The transformer is made of altogether six coils, is respectively First Line
Enclose the 9, second coil 10, tertiary coil 11, the 4th coil 12, the 5th coil 13, the 6th coil 14.Six sections of coilings of the transformer
Technique, has canceled this part of layer insulation, directly makes in conducting wire around the polyester film for the 0.05mm that double-bags and one layer of nonwoven
Cloth, total insulation thickness 0.4mm.
The first coil 9 joins end to end with the second coil 10, and the second coil 10 is connected with 11 tail tail of tertiary coil.It is described
6th coil 14 joins end to end with the 5th coil 13, and the 5th coil 13 is connected with 12 tail tail of the 4th coil.The tertiary coil 11
The first binding post 1, the 3rd binding post 3, the 5th binding post 5 are drawn respectively.4th coil 12 draws the second binding post respectively
2nd, the 4th binding post 4, the 6th binding post 6.The first coil draws A (B, C) binding post 7, the 6th coil is drawn X (Y, Z) and connect
Terminal 8.
Invention feasibility comprehensive analysis
1st, technical Analysis
Product of the present invention will be analyzed from designing scheme, application material, production technology etc., the key technical indexes point
Analysis is as follows：
(1) product design scheme feasibility analysis
From conventional SCB dry-type transformers production practices and test data analyzer, the partial discharge quantity of four sections of coiling designs closes
Lattice rate is about 85% or so, and six sections of coiling designing schemes, and the voltage between layers between conducting wire can be controlled within 300V so that whole
The voltage of a coil can be uniformly distributed, and substantially reduce electric charge undue concentration, so as to reduce product partial discharge quantity, shelf depreciation
The most of detection data of amount are less than 5pc, and qualification rate can reach more than 99%.
With this as it can be seen that using six sections and multistage above coiling designing scheme, the shelf depreciation of product can be largely reduced
Amount, improves product qualification rate, not only improves the safe operation of electric product, and can prolong the service life.
(2) product material uses feasibility analysis
The high-tension coil of traditional four sections of coilings is using DMD composite polyester materials as layer insulation, general thickness 0.2-
0.4mm, pressure-resistant to be more than 3000V, wire insulation is then the double glazing silk using insulation thickness 0.3mm, this wire insulation
Processing and fabricating is costly.
Six sections of coiling schemes that the present invention uses, have just canceled this part of layer insulation, wrapped directly on conducting wire
The polyester film non-woven fabrics of two layers of 0.05mm thickness, total insulation thickness 0.4mm.Single-layer polyester film can pressure-resistant more than 3000V, two layers
In theory can be with pressure-resistant more than 6000V.Analyzed from processing charges, non-woven membrane bag flat type copper wire is about glass silk-covered copper wire processing charges
Half.Remove the high-tension coil of layer insulation, the axial outside diameter of coil reduces, and the consumption of material also will be reduced accordingly.
Compared to the high-tension coil of traditional four sections of coilings, greatly improve the dielectric strength and compression strength of conducting wire, reduce because
Shelf depreciation causes the possibility of insulation breakdown, and the performance of product is effectively lifted, and correspondingly reduces cost of manufacture.
2nd, industry and market analysis
《2013-2017 China's dry-type transformer industry market requirement forecastings are reported with investment strategy planning application》It is aobvious
Show, China has become dry in the world and sold of one's property the most salable country so far.External various high and low voltage electrical equipment products at present, occupy
Some staple markets of the country, dry-type transformer is after at the end of the 20th century only, almost again not from external import, at home
Emphasis invention and Important Project in, be difficult to find the external dry trace become.In the past 20 years, with the development of world economy, do and become
The whole world achieves swift and violent development, and especially in distribution transformer, the ratio done shared by becoming is more and more big, according to statistics,
In the developed countries such as America and Europe, it has accounted for the 40-50% of distribution transforming.
With economic liftoff, China is also continuous with 20% speedup to the demand of dry-type transformer.Currently, urban and rural power grids
Pace of construction accelerates, and China's generated energy and power consumption are growing day by day.Typically, the generated energy of 1kW is often increased, it is necessary to increase
The transformer total capacity of 11kVA；It is estimated that dry-type distribution transformer accounts for the 1/5-1/4 of whole distribution transformers.Built by power grid
If the pulling of investment, the transformer industry degree of prosperity is higher, after 2010 yield by keep 20% or so speedup.According to history
Experience and the change of transformer voltage hierarchical organization, distribution transformer ratio is 40% or so, according to 40% ratio calculating, this year
China increases dry-type transformer yield newly will be up to 200,000,000 KVA or so.The fast development of national economy, power supply, power grid are benefited from recent years
The constantly increase of construction input, the market demand of equipment for power transmission and distribution rises appreciably, it is contemplated that China is to becoming in a long time
The market demand of the equipment for power transmission and distribution such as depressor will keep higher level.
3rd, financial analysis (investment payback time, the input-output ratio that calculate invention)
The invention declared need to provide the laboratory report of product in research and development or pilot scale stage, and the invention declared is in industrialization
Stage need to provide product testing survey report；
The above is only the preferred embodiments of the present invention, and not makees limitation in any form to the present invention,
Every technical spirit according to the present invention belongs to any simple modification made for any of the above embodiments, equivalent variations and modification
In the range of technical solution of the present invention.
Claims (6)
1. a kind of SCB types dry-type transformer, it is characterised in that the SCB types dry-type transformer, is provided with first coil, second
Coil, tertiary coil, the 4th coil, the 5th coil, the 6th coil and head and the tail connection；
The first coil, the second coil, tertiary coil, the 4th coil, the 5th coil, the 6th coil are equipped with two between each other
Strata ester film and layer of non-woven fabric.
2. SCB types dry-type transformer as claimed in claim 1, it is characterised in that the first coil and the second coil head and the tail phase
Even, the second coil is connected with tertiary coil tail tail.
3. SCB types dry-type transformer as claimed in claim 1, it is characterised in that the 6th coil and the 5th coil head and the tail phase
Even, the 5th coil is connected with the 4th coil tail tail.
4. SCB types dry-type transformer as claimed in claim 1, it is characterised in that the tertiary coil draws the first wiring respectively
Column, the 3rd binding post, the 5th binding post.
5. SCB types dry-type transformer as claimed in claim 1, it is characterised in that the 4th coil draws the second wiring respectively
Column, the 4th binding post, the 6th binding post.
6. SCB types dry-type transformer as claimed in claim 1, it is characterised in that described first coil extraction A (B, C) binding post,
6th coil draws X (Y, Z) binding post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711385411.7A CN107993816A (en) | 2017-12-20 | 2017-12-20 | A kind of SCB types dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711385411.7A CN107993816A (en) | 2017-12-20 | 2017-12-20 | A kind of SCB types dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107993816A true CN107993816A (en) | 2018-05-04 |
Family
ID=62039363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711385411.7A Pending CN107993816A (en) | 2017-12-20 | 2017-12-20 | A kind of SCB types dry-type transformer |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05283247A (en) * | 1992-04-03 | 1993-10-29 | Sony Corp | Transformer |
| CN1274165A (en) * | 1999-05-12 | 2000-11-22 | 魏胜璋 | High-voltage winding with resin insulation for transformer and its manufacture method |
| TW559318U (en) * | 2003-02-14 | 2003-10-21 | Lien Chang Electronic Entpr Co | Sealing type transformer |
| CN101556864A (en) * | 2009-01-23 | 2009-10-14 | 广东海鸿变压器有限公司 | Method for winding resin insulating dry type transformer coil |
| CN101923944A (en) * | 2009-06-15 | 2010-12-22 | 苏州工业园区隆盛电器成套设备制造有限公司 | Longitudinal insulating structure of high-voltage segmental layered coil of casting dry type transformer |
| CN103117156A (en) * | 2013-03-01 | 2013-05-22 | 重庆祥龙电气有限公司 | Special-structure epoxy resin encapsulated dry-type transformer |
| CN204117813U (en) * | 2014-09-13 | 2015-01-21 | 广东百胜电气有限公司 | A kind of high-tension coil of resin-insulated dry power transformer |
| CN105280361A (en) * | 2015-11-17 | 2016-01-27 | 国家电网公司 | High-voltage coil of dry-type transformer, winding method of the high-voltage coil and dry-type transformer thereof |
| CN205564508U (en) * | 2016-04-08 | 2016-09-07 | 天津天能变压器有限公司 | Large -scale dry -type on -load voltage regulation power transformer high -pressure coil structure of 35kV |
| CN206505807U (en) * | 2017-01-05 | 2017-09-19 | 奇宏（厦门）电力变压器有限公司 | A kind of improved transformation coil |
| CN207993633U (en) * | 2017-12-20 | 2018-10-19 | 湖北三峡职业技术学院 | A kind of SCB types dry-type transformer |
-
2017
- 2017-12-20 CN CN201711385411.7A patent/CN107993816A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05283247A (en) * | 1992-04-03 | 1993-10-29 | Sony Corp | Transformer |
| CN1274165A (en) * | 1999-05-12 | 2000-11-22 | 魏胜璋 | High-voltage winding with resin insulation for transformer and its manufacture method |
| TW559318U (en) * | 2003-02-14 | 2003-10-21 | Lien Chang Electronic Entpr Co | Sealing type transformer |
| CN101556864A (en) * | 2009-01-23 | 2009-10-14 | 广东海鸿变压器有限公司 | Method for winding resin insulating dry type transformer coil |
| CN101923944A (en) * | 2009-06-15 | 2010-12-22 | 苏州工业园区隆盛电器成套设备制造有限公司 | Longitudinal insulating structure of high-voltage segmental layered coil of casting dry type transformer |
| CN103117156A (en) * | 2013-03-01 | 2013-05-22 | 重庆祥龙电气有限公司 | Special-structure epoxy resin encapsulated dry-type transformer |
| CN204117813U (en) * | 2014-09-13 | 2015-01-21 | 广东百胜电气有限公司 | A kind of high-tension coil of resin-insulated dry power transformer |
| CN105280361A (en) * | 2015-11-17 | 2016-01-27 | 国家电网公司 | High-voltage coil of dry-type transformer, winding method of the high-voltage coil and dry-type transformer thereof |
| CN205564508U (en) * | 2016-04-08 | 2016-09-07 | 天津天能变压器有限公司 | Large -scale dry -type on -load voltage regulation power transformer high -pressure coil structure of 35kV |
| CN206505807U (en) * | 2017-01-05 | 2017-09-19 | 奇宏（厦门）电力变压器有限公司 | A kind of improved transformation coil |
| CN207993633U (en) * | 2017-12-20 | 2018-10-19 | 湖北三峡职业技术学院 | A kind of SCB types dry-type transformer |
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