CN205564493U - Contain air passage structure high -pressure coil suitable for dry -type transformer more than 35kV - Google Patents
Contain air passage structure high -pressure coil suitable for dry -type transformer more than 35kV Download PDFInfo
- Publication number
- CN205564493U CN205564493U CN201620290670.6U CN201620290670U CN205564493U CN 205564493 U CN205564493 U CN 205564493U CN 201620290670 U CN201620290670 U CN 201620290670U CN 205564493 U CN205564493 U CN 205564493U
- Authority
- CN
- China
- Prior art keywords
- coil
- section
- stem
- even number
- air flue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000005684 electric field Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model discloses a contain air passage structure high -pressure coil suitable for dry -type transformer more than 35kV. It includes stem stem and coil, and the coil leaves insulation gap around establishing on the stem stem and forming the multistage coil between the two double -phase adjacent lines circle, and it splits into the air flue board of inner coil and outer coil with each section coil still outside the stem stem is located to the ring, and the coil between stem stem and the air flue board is located for rich to the inner coil, and the coil outside the air flue board is located to outer coil for having mercy on, the hop count of coil is the N section, and wherein N is the even number to the coil of wire starting point section is as first section coil, between the inner coil of odd number section coil and the inner coil of even number section coil apart from L (E F, ) be less than between the outer coil of outer coil and the even number section coil of odd number section coil apart from L (C D, ), the cross -section of outer coil is the pagoda type, and the inner coil of even number section coil and the connecting wire between the outer coil are the slash coiling. It has, and the space occupies less, advantage such as with low costs.
Description
Technical field
This utility model relates to a kind of electric field, a kind of more than 35kV dry-type transformer that is applicable to
Containing air passage structure high-tension coil.
Background technology
Dry transformer high-tension coil many employings segmented layered structure, is equivalent to by multilamellar layer-type winding vertically
Being divided into some line segments composition, this coil Electric Field Distribution is uniform, it is possible to decrease the work electricity that layer insulation is born
Pressure.The reasonability arranged in view of Electric Field Distribution and wire turn, this type of coil is designed as pyramid-like structure more, as
Shown in figure one: coil is from bottom coiling to top, and upper strata wire turn is stacked on underlying turns near middle part coiling.
Now one rational section insulation of selection is apart from extremely important, because of first paragraph wire turn and second segment wire turn point pair
Voltage drop (example U will be produced between pointAB), when voltage drop exceedes the maximum voltage that insulant can bear,
Puncture intersegmental for generation, and then burn coil.For 10kV and following product, because electric field intensity is less, point
Less to point voltage pressure drop, insulation system can meet requirement completely as shown above.More than 35kV is produced
Product, point-to-point pressure drop is relatively big, if U shown in the upper figure of exampleABReach the breakdown voltage of insulation, then insulation has been produced
Raw harm, occurs for evading this kind of situation, it is necessary to increases section insulation distance and ensures insulation, i.e. wastes
Space adds again cost.
Summary of the invention
The purpose of this utility model is to provide a kind of space hold more than 35kV that is applicable to few, low cost to do
Formula transformator containing air passage structure high-tension coil.
The purpose of this utility model is achieved through the following technical solutions: include stem stem, and it is peripheral to be wound on stem stem
Wire constitute coil, described coil is around being located on stem stem and forming multistage coil, two-by-two adjacent windings
Between leave clearance for insulation, it is characterised in that:
It also includes being located on the air flue plate that stem stem is outer, each section of coil is divided into inner coil and outer coil,
Inner coil is to have mercy on to be located at the coil between stem stem and air flue plate, and outer coil is rich being located at outside air flue plate
Coil；
The hop count of coil is N section, and wherein N is even number, using the coil of wire starting point section as first section of coil,
Distance L between inner coil and the inner coil of even number section coil of odd number section coil(E-F)Less than odd number section line
Distance L between outer coil and the outer coil of even number section coil of circle(C-D)；
The cross section of outer coil is pagoda-shaped, the connection between inner coil and the outer coil of even number section coil
Wire is oblique line coiling.
For prior art, the utility model has the advantage of: 1 have adjusted overall structure, it is to avoid electricity
When pressure pressure drop exceedes the maximum voltage that insulant can bear, puncture intersegmental for generation, and then burn coil
Situation occur, 2 adjust during structures, optimize structure design, have saved space, decreased cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing dry transformer high-tension coil.
Fig. 2 is that 35KV contains air flue high-tension coil sectional view.
Fig. 3 is that voltage moves towards figure.
Fig. 4 design drawing.
Label declaration: 1 coil, 2 air flue plates, 11 inner coils, 12 outer coils.
Detailed description of the invention
Below in conjunction with Figure of description and embodiment, this utility model content is described in detail:
As Fig. 2-4 is shown as a kind of embodiment schematic diagram that this utility model provides, it includes stem stem, and around
At the coil 1 that the wire that stem stem is peripheral is constituted, described coil around being located on stem stem and formed multistage coil, two
Leave clearance for insulation between two adjacent windings, it also includes being located on, and stem stem is outer, each section of coil is divided in
The air flue plate 2 of layer line circle 11 and outer coil 12, inner coil is to have mercy on to be located at the line between stem stem and air flue plate
Circle, outer coil is to have mercy on to be located at the coil outside air flue plate；
The hop count of coil is N section, and wherein N is even number, using the coil of wire 3 starting point section as first section of coil,
Distance L between inner coil and the inner coil of even number section coil of odd number section coil(E-F)Less than odd number section line
Distance L between outer coil and the outer coil of even number section coil of circle(C-D)；
The cross section of outer coil is pagoda-shaped, the connection between inner coil and the outer coil of even number section coil
Wire is oblique line coiling.
Generally, for 35KV without the structure of air flue, due to partition and the support of depletion of QI guidance tape, although
Electric field intensity is relatively big, still needs to according to pagoda-shaped coiling.
As in figure 2 it is shown, for the product of 35kV band air flue, due to the partition supporting role of air flue plate, then may be used
Between employing air flue plate coiling leading portion, between insulation distance and coiling back segment, the method for insulation distance separate computations arranges
Wire turn.Second segment coil, after epithelium healing plate, utilizes isolation and the supporting role of air flue plate, and stagger air flue plate
Front wire turn, reselecting starting point is pagoda type coiling, then second segment entirety presents oblique line coiling (for expressing
Convenient, middle abbreviation oblique line winding process described below).This kind of winding method, Appropriate application space, big in pressure drop
Local increase insulation distance, reduce insulation distance little local of pressure drop, entirety reduces coil axial height,
Reduce the purpose of cost.
As shown in Figure 3: take six points of ABCDEF at Fig. 2 and make a concrete analysis of, electric current enters along upper figure institute from electrical network
Showing trend, the line segment of process is the longest between points, and the number of turn of process is the most, has i.e. added up the biggest voltage
Pressure drop.As shown above, maximum voltage drop is UAB, from A point, the line segment to B point is the longest, minimum
Voltage drop is UEF, and from E point, the line segment to F point is the shortest.Because of UABMaximum, then A point is to the insulation of B point
Distance should maximum, the pressure drop voltage of maximum can be born, otherwise and E point can be suitable to the insulation distance of F point
Reduce, only need to ensure the electric insulation distance of maximum pressure drop before air flue plate coiling.Coiling gas in practical operation
All in pagoda-shaped coiling before and after guidance tape coiling, before coiling, need first marker field spacing, therefore when designing coil,
Distance L marking between C and D is needed after coiling air flue plate(C-D).Need standard E to the F must be away from before coiling air flue plate
From L(E-F)。
Claims (2)
1. be applicable to more than 35kV dry-type transformer containing air passage structure high-tension coil, it includes stem stem, with
And it being wound on the coil (1) that the peripheral wire of stem stem is constituted, described coil is around being located on stem stem and forming multistage
Coil, leaves clearance for insulation between adjacent windings two-by-two, it is characterised in that:
It also includes being located on outside stem stem, each section of coil is divided into inner coil (11) and outer coil (12)
Air flue plate (2), inner coil is rich to be located at the coil between stem stem and air flue plate, and outer coil sets for rich
Coil outside air flue plate；
The hop count of coil is N section, and wherein N is even number, using the coil of wire (3) starting point section as first section of line
Circle, distance L between inner coil and the inner coil of even number section coil of odd number section coil(E-F)Less than odd number
Distance L between outer coil and the outer coil of even number section coil of section coil(C-D)。
The most according to claim 1 for more than 35kV dry-type transformer containing air passage structure high-voltage line
Circle, it is characterised in that: the cross section of outer coil is pagoda-shaped, the inner coil of even number section coil and outer layer line
Connection wire between circle is oblique line coiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620290670.6U CN205564493U (en) | 2016-04-08 | 2016-04-08 | Contain air passage structure high -pressure coil suitable for dry -type transformer more than 35kV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620290670.6U CN205564493U (en) | 2016-04-08 | 2016-04-08 | Contain air passage structure high -pressure coil suitable for dry -type transformer more than 35kV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205564493U true CN205564493U (en) | 2016-09-07 |
Family
ID=56810203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620290670.6U Expired - Fee Related CN205564493U (en) | 2016-04-08 | 2016-04-08 | Contain air passage structure high -pressure coil suitable for dry -type transformer more than 35kV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205564493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105719814A (en) * | 2016-04-08 | 2016-06-29 | 国家电网公司 | High voltage coil which is applicable to a dry type transformer of more than 35kV and contains an airway structure |
-
2016
- 2016-04-08 CN CN201620290670.6U patent/CN205564493U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105719814A (en) * | 2016-04-08 | 2016-06-29 | 国家电网公司 | High voltage coil which is applicable to a dry type transformer of more than 35kV and contains an airway structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202585047U (en) | Split rectifier transformer winding | |
| CN203617118U (en) | Oil-immersed inverted current transformer | |
| CN205564493U (en) | Contain air passage structure high -pressure coil suitable for dry -type transformer more than 35kV | |
| CN207319884U (en) | A kind of high-frequency impulse step-up transformer skeleton and include its transformer | |
| CN201904192U (en) | Rectangular coil of transformer | |
| CN201638666U (en) | 110kV single-phase electromagnetic type voltage transformer without partial discharge | |
| CN205542361U (en) | Voltage transformer with equalizer ring | |
| CN202650805U (en) | Low-voltage coil of three-voltage dry-type transformer | |
| CN203456257U (en) | Novel transformer insulation structure | |
| CN105070491A (en) | Double-splitting photovoltaic variable structure | |
| CN102005287A (en) | Insulation isolation structure of transformer coil | |
| CN105719814A (en) | High voltage coil which is applicable to a dry type transformer of more than 35kV and contains an airway structure | |
| CN203631279U (en) | Transformer coil insulating structure | |
| CN208738015U (en) | A kind of 35kV oil-immersed power transformer high-low pressure winding Main Insulation Structure of Electric | |
| CN103106999A (en) | Dry-type transformer | |
| CN202285190U (en) | Small-sized energy-saving dry-type transformer | |
| CN201608041U (en) | Single-phase five-winding electromagnetic type voltage transformer | |
| CN208385126U (en) | Transformer and coil block | |
| CN202308894U (en) | Gauge cabinet | |
| CN203338917U (en) | Transformer with split windings | |
| CN101968992A (en) | Railway traction transformer | |
| CN204257355U (en) | Transformer and winding structure thereof | |
| CN207116209U (en) | A kind of Current Transformer Secondary coil fixing structure | |
| CN205452013U (en) | Flame -proof type multivoltage unsteady flow is dry -type transformer and mobile substation for mobile substation | |
| CN205845681U (en) | Layer-type winding for oil immersion-type distribution transformer |
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 |
Granted publication date: 20160907 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |