CN207558572U - A kind of high-performance variable transformer coil - Google Patents
A kind of high-performance variable transformer coil Download PDFInfo
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- CN207558572U CN207558572U CN201721673767.6U CN201721673767U CN207558572U CN 207558572 U CN207558572 U CN 207558572U CN 201721673767 U CN201721673767 U CN 201721673767U CN 207558572 U CN207558572 U CN 207558572U
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Abstract
The utility model provides a kind of high-performance variable transformer coil,Belong to transformer technology field,Including spiral wire cake,The upper and lower side of spiral wire cake is equipped with insulating end ring,The inside and outside of spiral wire cake is respectively equipped with interior insulation cylinder and external insulation cylinder,In spiral wire cake the radial oil clearance cushion block being made by insulating board is equipped between neighbouring line cake,Reduce width in coil to insulate between line cake the height of oil clearance cushion block,So that the compressible space of insulation becomes smaller,The space smaller of corresponding magnet wire cake deformation,Loop construction is more firm,When transformer encounters external short circuit failure,The ability that coil bears short-circuit force is stronger,Improve accounting of the conducting wire in coil,That is the fill factor higher of transformer,So as to substantially cost-effective,When being used especially as Inside coil,It is more notable to save material effect,Material is saved up to 10~15%；The energy per volume density of transformer is improved simultaneously, it is small, light-weight, it is readily transported.
Description
Technical field
The utility model belongs to transformer technology field, is to be related to a kind of high-performance variable transformer coil more specifically.
Background technology
Transformer is the static electromagnetism instrument to be worked based on electromagnetic induction principle, and two big core components of transformer are lines
Electric energy, secondary side is transmitted to by the coupling of magnetic by circle and iron core from primary side.It and can be by the exchange of a certain voltage value
Voltage transformation into the required voltage value of same frequency alternating current, to meet high voltage power transmission, low-voltage power supply and the needs of other purposes.
Wherein, coil belongs to circuit part, and iron core belongs to magnetic circuit part.Under the premise of iron core material and structure are substantially stationary, coil
The good and bad quality for directly determining transformer technology and economic performance of technology.
For concentric coil, coil is plain conductor by being wound on the spiral shape formed on the objects such as spool or circle
Annular object, conducting wire are combined into an entirety with various insulating parts, and the effect of these insulating parts is that composition is transformer insulated and cold
But oil duct, and conducting wire is fixed on the position that calculating and structure determined.There are many winding wire types, wherein widely applying
One kind on low-voltage and high-current coil is net pack transposition conducting wire, it is the product developed by paper bag transposed conductor
Kind, insulating paper is not wrapped up outside it, but thermal-shrinkage mesh band is wrapped up, this transposed conductor is conducive to heat dissipation；But its own exist with
Lower shortcoming：Since thermal-shrinkage mesh band is than sparse, in production and winding process, the insulation of conducting wire paint film is susceptible to abrasion, influences
Electric property may cause to climb electricity along stay between coil cake.Using the coil of net pack transposition conducting wire, paper bag has still been continued to use at present and has been changed
The designing technique of position lead loop does not give full play to the characteristic of the excellent radiation performance of net pack transposition conducting wire, and insulation accounting is big,
It is less economical.
High-power transformer low-voltage coil is mostly using net pack transposition conducting wire coiling, since existing net pack transposition conducting wire technology is deposited
In defect, coil design techniques fall behind, and coil is caused to bear, and short-circuit capacity is low, and consumptive material is more, volume is big, and transport is inconvenient.
Utility model content
The purpose of this utility model is to provide a kind of high-performance variable transformer coil, to solve line in the prior art
Circle bears the technical issues of short-circuit capacity is low, consumptive material is more, the big transport of volume is inconvenient.
To achieve the above object, the technical solution adopted in the utility model is：A kind of high-performance variable transformer coil is provided, is wrapped
Spiral wire cake is included, the top and bottom of the spiral wire cake are equipped with insulating end ring, the spiral conducting wire
The internal side diameter and outside diameter of line cake are respectively equipped with interior insulation cylinder and external insulation cylinder, neighbouring in the spiral wire cake
The radial oil clearance cushion block being made by insulating board is equipped between line cake.
Further, interior longitudinal oil duct, the spiral are equipped between the inboard of the spiral wire cake and interior insulation cylinder
Be equipped with outer longitudinal oil duct between the outside of formula wire cake and external insulation cylinder, interior longitudinal oil duct, outer longitudinal oil duct with it is described
Radial oil duct connection in spiral wire cake between neighbouring line cake, longitudinal oil duct of the spiral wire cake and
The insulating oil for cooling is filled in radial oil duct；It is equipped at intervals with interior oil baffle, institute from top to bottom in interior longitudinal oil duct
State and be equipped at intervals with outer oil baffle in outer longitudinal oil duct from top to bottom, the internal side diameter and outside diameter of the interior oil baffle respectively with it is interior absolutely
Edge cylinder and line cake are connected, and the internal side diameter and outside diameter of the outer oil baffle are connected respectively with line cake and external insulation cylinder, the interior gear
Scraper ring and interlaced arrangement above and below outer oil baffle make to form oil guiding radiator structure in spiral wire cake.
Further, the spiral wire cake is formed using net packet tack winding transposition wire, and the net packet is certainly
Sticky transposed conductor includes transposition core and guipure, and insulating paper is equipped between the internal side diameter and guipure of the transposition core.
Further, the equivalent width of the width of the insulating paper and net packet tack transposed conductor internal side diameter.
Further, the insulating paper is Nomex insulating paper.
Further, the thickness of the Nomex insulating paper is 0.05mm.
Further, the radial oil clearance cushion block is made by insulating board.
Further, longitudinal oil road width is not less than 8mm.
Further, the radial oil clearance cushion block in the spiral wire cake arranges that each column is radial in column from top to bottom
The inside and outside of oil clearance cushion block are equipped with inner bracing strip and outer stay for fixing radial oil clearance cushion block.
Further, the thickness of the radial oil clearance cushion block is 2.5mm~3.5mm.
The advantageous effect of high-performance variable transformer coil provided by the utility model is：Compared with prior art, this practicality
It is novel to reduce width in coil and insulate between line cake the height of oil clearance cushion block so that the compressible space of insulation becomes smaller, accordingly
The space smaller of magnet wire cake deformation, loop construction is more firm, and when transformer encounters external short circuit failure, coil bears short circuit
The ability of power is stronger；It insulate between cake the height of oil clearance cushion block due to reducing width in coil, is equivalent to that improve conducting wire online
The fill factor higher of accounting in circle, i.e. transformer so as to substantially cost-effective, is used especially as Inside coil
When, section material effect is more notable, and section material is up to 10~15%；The energy per volume density of transformer is improved, small product size is small,
It occupies little space, it is light-weight, it is readily transported, transformer loss is low, efficient, meets transformer miniaturization and light-weighted technology
Development trend.
Description of the drawings
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing is briefly described needed in description, it should be apparent that, the accompanying drawings in the following description is only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the vertical view of a kind of high-performance variable transformer coil that the utility model embodiment provides；
Fig. 2 is the A-A sectional views in Fig. 1；
Fig. 3 is a kind of winding method figure of high-performance variable transformer coil provided in an embodiment of the present invention；
Fig. 4 is the sectional view of net packet tack transposed conductor；
Wherein, each reference numeral in figure：
1- insulating end rings, the spiral wire cakes of 2-, 3- interior insulation cylinders, 4- external insulation cylinders, longitudinal oil duct in 5- are vertical outside 6-
To oil duct, the radial oil ducts of 7-, the radial oil clearance cushion blocks of 8-, oil baffle in 9-, the outer oil baffles of 10-, 11- transposition cores, 12- guipures,
13- insulating papers, 14- inner bracing strips, 15- outer stays.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and advantageous effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention is further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " top ", " bottom " " interior ", " outer " are to be closed based on orientation shown in the drawings or position
System is for only for ease of description the utility model and simplifies description rather than instruction or imply that signified device or element are necessary
With specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
Also referring to Fig. 1 to Fig. 3, now high-performance variable transformer coil provided by the utility model is illustrated.It is described
High-performance variable transformer coil, including spiral wire cake 2, the top and bottom of the spiral wire cake 2 are equipped with absolutely
Acies circle 1, the internal side diameter and outside diameter of the spiral wire cake 2 are respectively equipped with interior insulation cylinder 3 and external insulation cylinder 4, described
In spiral wire cake 2 the radial oil clearance cushion block 8 being made by insulating board is equipped between neighbouring line cake.
High-performance variable transformer coil provided by the utility model, compared with prior art, spoke in the coil of the utility model
Highly it is reduced by about 1/3 to oil clearance cushion block so that the compressible space of insulation becomes smaller, and the space of corresponding magnet wire cake deformation is more
Small, loop construction is more firm, and when transformer encounters external short circuit failure, the ability that coil bears short-circuit force is stronger；Due to subtracting
Lack width in coil to insulate between cake the height of oil clearance cushion block, be equivalent to the accounting for improving conducting wire in coil, i.e. transformer
Fill factor higher, so as to substantially cost-effective, especially as Inside coil in use, section material effect it is more notable,
Material is saved up to 10~15%；The energy per volume density of transformer is improved, small product size is small, occupies little space, light-weight,
It is readily transported, transformer loss is low, efficient, meets transformer miniaturization and light-weighted technology trends.
Further, also referring to Fig. 2, one kind as high-performance variable transformer coil provided by the utility model is specific
Embodiment is equipped with interior longitudinal oil duct 5, the spiral conducting wire between the inboard of the spiral wire cake 2 and interior insulation cylinder 3
Be equipped with outer longitudinal oil duct 6 between the outside of line cake 2 and external insulation cylinder 4, interior longitudinal oil duct 5, outer longitudinal oil duct 6 with the spiral shell
Radial oil duct 7 in rotating wire cake 2 between neighbouring line cake connects, the interior longitudinal oil of the spiral wire cake 2
The insulating oil for cooling is filled in road 5, outer longitudinal oil duct 6 and radial oil duct 7；In interior longitudinal oil duct 5 from top to bottom
Interior oil baffle 9 is equipped at intervals with, outer oil baffle 10 is equipped at intervals with from top to bottom in outer longitudinal oil duct 6, the interior oil baffle 9
Internal side diameter and outside diameter are connected respectively with interior insulation cylinder 3 and line cake, the internal side diameter and outside diameter of the outer oil baffle 10 respectively with
Line cake and external insulation cylinder 4 are connected, and the interior oil baffle 9 and outer oil baffle interlaced arrangement about 10 make in spiral wire cake 2
It forms oil and is oriented to radiator structure.Arrow in Fig. 2 represents the flow direction of insulating oil, insulating oil longitudinal oil duct, outer longitudinal oil duct inside
And Tortuous flow in the line cake gap of spiral wire cake, amplitude peak line cake can be cooled down.
Further, referring to Fig. 2, a kind of specific implementation as high-performance variable transformer coil provided by the utility model
Mode, the spiral wire cake 2 are formed using net packet tack winding transposition wire, the net packet tack transposed conductor
Including transposition core 11 and guipure 12, insulating paper 13 is equipped between the transposition internal side diameter of core 11 and guipure 12.Conducting wire is bent
It takes intensity and bears short-circuit capacity by real transformer and chosen.
Further, in a specific embodiment of the utility model, width and the net packet self-adhesion of the insulating paper 13
The equivalent width of property transposed conductor internal side diameter, the dielectric strength of reinforcing mat packet tack transposed conductor.
Further, a kind of specific embodiment as high-performance variable transformer coil provided by the utility model, it is described
Insulating paper 13 is Nomex insulating paper.Wherein, the thickness of the Nomex insulating paper is 0.05mm.It is exhausted by Nomex
The excellent mechanical tenacity of edge paper, thermal stability, chemical compatibility have very low dielectric constant, electric field can be made to be more evenly distributed.
Further, referring to Fig. 2, a kind of specific implementation as high-performance variable transformer coil provided by the utility model
The width of mode, interior longitudinal oil duct 5 and outer longitudinal oil duct 6 is not less than 8mm.It is interior vertical in the case that dielectric strength allows
It is more big more be conducive to radiate to oil duct and outer longitudinal oil duct.
Wherein, Fig. 3 is single spiral coil coiling schematic diagram, and coil can be radial single or several paralleled conductor, or
It is axial and around it is mostly spiral.
Further, referring to Fig. 1, a kind of specific implementation as high-performance variable transformer coil provided by the utility model
Mode, the radial oil clearance cushion block 8 in the spiral wire cake 2 arrange in column from top to bottom, the radial oil clearance cushion block 8 of each column
Inside and outside are equipped with to fix the inner bracing strip 14 of radial oil clearance cushion block 8 and outer stay 15.Utilize inner bracing strip and outer stay
Radial oil clearance cushion block is reinforced, ensures the stability of coil winding.
Further, a kind of specific embodiment as high-performance variable transformer coil provided by the utility model, it is described
The thickness of radial oil clearance cushion block is 2.5mm~3.5mm.The radial oil clearance pad thickness is chosen by following principles：Transformer wire
The circle type of cooling is Natural Oil Circulation Power air cooling, Natural Oil Circulation Power quenching, forced oil are oriented to cycle quenching, works as line
When enclosing radial thickness less than 80mm, 2.5mm is taken；When the radial thickness of coil is between 80mm~110mm, 3mm is taken；Work as coil
When radial thickness is between 110mm~150mm, 3.5mm is taken.Conventional transformer coil is radial bigger, radial in order to be conducive to radiate
Oil clearance pad thickness is also bigger, and the thickness of radial oil clearance cushion block is not less than 3.5mm.
In conclusion the utility model has simple and compact for structure, small convenience in transport, bears strong excellent of short-circuit capacity
Point reduces width in coil and insulate between cake the height of oil clearance cushion block, reduces the compressible space in transformer, make coil knot
Structure is more firm, improves the ability that coil bears short circuit；It also corresponds to improve accounting of the conducting wire in coil simultaneously, improve
The fill factor of transformer saves material significant effect；The loss of transformer is reduced, improves efficiency.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of high-performance variable transformer coil, it is characterised in that：Including spiral wire cake, the spiral wire cake
Top and bottom are equipped with insulating end ring, the internal side diameter and outside diameter of the spiral wire cake be respectively equipped with interior insulation cylinder and
External insulation cylinder is equipped with the radial oil clearance being made by insulating board in the spiral wire cake between neighbouring line cake
Cushion block.
2. a kind of high-performance variable transformer coil as described in claim 1, it is characterised in that：In the spiral wire cake
Interior longitudinal oil duct is equipped between side and interior insulation cylinder, outer longitudinal oil is equipped between the outside of the spiral wire cake and external insulation cylinder
Road, interior longitudinal oil duct, radial oil of the outer longitudinal oil duct between line cake neighbouring in the spiral wire cake
Road connection, interior longitudinal oil duct, outer longitudinal oil duct and interior be filled with of radial oil duct of the spiral wire cake are used for cooling
Insulating oil；Interior oil baffle is equipped at intervals in interior longitudinal oil duct from top to bottom, is spaced from top to bottom in outer longitudinal oil duct
Equipped with outer oil baffle, the internal side diameter and outside diameter of the interior oil baffle are connected respectively with interior insulation cylinder and line cake, the outer gear oil
The internal side diameter and outside diameter of circle are connected respectively with line cake and external insulation cylinder, and the interior oil baffle and outer oil baffle interlock cloth up and down
It puts.
3. a kind of high-performance variable transformer coil as claimed in claim 2, it is characterised in that：The spiral wire cake uses
Net packet tack winding transposition wire forms, and the net packet tack transposed conductor includes transposition core and guipure, the transposition
Insulating paper is equipped between the internal side diameter and guipure of core.
4. a kind of high-performance variable transformer coil as claimed in claim 3, it is characterised in that：The width of the insulating paper is wrapped with net
The equivalent width of tack transposed conductor internal side diameter.
5. a kind of high-performance variable transformer coil as claimed in claim 4, it is characterised in that：The insulating paper is exhausted for Nomex
Edge paper.
6. a kind of high-performance variable transformer coil as claimed in claim 5, it is characterised in that：The thickness of the Nomex insulating paper
It spends for 0.05mm.
7. such as a kind of high-performance variable transformer coil of claim 2-6 any one of them, it is characterised in that：Interior longitudinal oil duct
And the width of outer longitudinal oil duct is not less than 8mm.
8. a kind of high-performance variable transformer coil as claimed in claim 7, it is characterised in that：In the spiral wire cake
Radial oil clearance cushion block arranges that the inside and outside of the radial oil clearance cushion block of each column are equipped with to fix radial oil in column from top to bottom
The inner bracing strip and outer stay of gap cushion block.
9. a kind of high-performance variable transformer coil as claimed in claim 8, it is characterised in that：The thickness of the radial oil clearance cushion block
For 2.5mm~3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721673767.6U CN207558572U (en) | 2017-12-05 | 2017-12-05 | A kind of high-performance variable transformer coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721673767.6U CN207558572U (en) | 2017-12-05 | 2017-12-05 | A kind of high-performance variable transformer coil |
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| Publication Number | Publication Date |
|---|---|
| CN207558572U true CN207558572U (en) | 2018-06-29 |
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ID=62664782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721673767.6U Active CN207558572U (en) | 2017-12-05 | 2017-12-05 | A kind of high-performance variable transformer coil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768103A (en) * | 2017-12-05 | 2018-03-06 | 保定天威集团特变电气有限公司 | A kind of high-performance variable transformer coil |
| CN109841402A (en) * | 2019-02-22 | 2019-06-04 | 正泰电气股份有限公司 | Transformer coil pressure method |
-
2017
- 2017-12-05 CN CN201721673767.6U patent/CN207558572U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768103A (en) * | 2017-12-05 | 2018-03-06 | 保定天威集团特变电气有限公司 | A kind of high-performance variable transformer coil |
| CN109841402A (en) * | 2019-02-22 | 2019-06-04 | 正泰电气股份有限公司 | Transformer coil pressure method |
| CN109841402B (en) * | 2019-02-22 | 2023-08-08 | 正泰电气股份有限公司 | Transformer coil pressurizing method |
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