CN208126996U - A kind of abnormity distribution transformer winding construction - Google Patents
A kind of abnormity distribution transformer winding construction Download PDFInfo
- Publication number
- CN208126996U CN208126996U CN201820539012.5U CN201820539012U CN208126996U CN 208126996 U CN208126996 U CN 208126996U CN 201820539012 U CN201820539012 U CN 201820539012U CN 208126996 U CN208126996 U CN 208126996U
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- winding
- insulating
- insulating board
- stay
- orthodrome
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- 238000004804 winding Methods 0.000 title claims abstract description 73
- 238000010276 construction Methods 0.000 title claims abstract description 12
- 238000009413 insulation Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Insulating Of Coils (AREA)
Abstract
The utility model relates to a kind of special-shaped distribution transformer winding constructions.Winding includes the high-voltage winding positioned at the low pressure winding of inner ring and positioned at outer ring, insulating board is equipped between low pressure winding and high-voltage winding, the two sides of insulating board are equipped with stay, several oil ducts are separated to form by stay between insulating board and low pressure winding and insulating board and high-voltage winding, two diameters equal small arc-shaped of the insulating cylinder outer diameter profile by the equal orthodrome of two diameters and positioned at orthodrome both ends forms, and orthodrome and small arc-shaped junction are tangent.The utility model is by changing the internal diameter profile of winding, holding the structure of insulation and oil duct, for improving the anti-sudden short circuit performance of winding and temperature rise model, compared with traditional oblong winding, its mechanical strength is stronger, electric property is more preferable, the anti-sudden short circuit ability of transformer can effectively be enhanced, the oil channel structure of winding can make oil stream more unimpeded, transformer temperature rise is effectively reduced.
Description
Technical field
The utility model relates to transformer technology fields, and in particular to a kind of abnormity distribution transformer winding construction.
Background technique
Traditional transformer winding generallys use round or oblong structure, although the winding anti-short circuit capability of circular configuration
It is relatively strong, but cost is excessively high.And as the requirement that short-circuit capacity bears to distribution transformer in Guo Wang company is higher and higher, short circuit is tried
The variation for testing rear winding deformation degree and reactance is increasingly stringenter, and capacity 400kVA and the above oblong winding would become hard to meet and want
It asks.
The defect of traditional oblong winding is：
1, oblong winding is made of straight line portion and two semicircles, in coiling, position that straight line and circular arc cross
Arc-shaped can be presented, need to beat or shaping, under the action of short-circuit force, winding is easy rebound and deformation.
2, the power transformer product of resistance to shorting requires cushion block and paper in winding upper end other than enclosing outside winding tightly
Plate compresses or stretching, causes oil stream unimpeded, temperature rise is excessively high.
Utility model content
In order to overcome the shortcomings of background technique, the utility model provides a kind of special-shaped distribution transformer winding construction.
Technical solution used by the utility model is：A kind of abnormity distribution transformer winding construction, including insulating cylinder；If
Set the insulating end at insulating cylinder both ends；It is wrapped in the winding of the insulating cylinder between two insulating ends, the winding includes being located at
The low pressure winding of inner ring and high-voltage winding positioned at outer ring are equipped with insulating board between the low pressure winding and high-voltage winding,
The two sides of the insulating board are equipped with stay, lead between insulating board and low pressure winding and insulating board and high-voltage winding
It crosses stay and is separated to form several oil ducts, the insulating cylinder outer diameter profile is by the equal orthodrome of two diameters and is located at big
The equal small arc-shaped composition of two diameters at circular arc both ends, orthodrome and small arc-shaped junction are tangent.
Further, inwardly protruded step is equipped on the inside of the insulating end.
Further, the both ends of the stay to insulating board two sides there are the distances of distance 5mm-6mm.
Further, between the stay and stay between be divided into 28mm-32mm.
Further, the insulating board with a thickness of 2mm.
The utility model has the beneficial effects that：Due to taking above-mentioned technical proposal, the utility model is by changing winding
The structure of internal diameter profile, end insulation and oil duct, it is and traditional oval for improving the anti-sudden short circuit performance of winding and temperature rise model
Shape winding is compared, and mechanical strength is stronger, and electric property is more preferable, can effectively enhance the anti-sudden short circuit ability of transformer, around
The oil channel structure of group can make oil stream more unimpeded, and transformer temperature rise is effectively reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the schematic cross-section of A-A in Fig. 1.
Fig. 3 and Fig. 4 is the distribution schematic diagram of stay on insulating board.
1, insulating cylinder in figure；2, insulating end；3, low pressure winding；4, high-voltage winding；5, insulating board；6, stay；7, oil duct；
8, orthodrome；9, small arc-shaped；10, step.
Specific embodiment
The utility model embodiment is described further with reference to the accompanying drawing.
As shown in Figures 1 to 4, a kind of special-shaped distribution transformer winding construction, including insulating cylinder 1；It is arranged at 1 liang of insulating cylinder
The insulating end 2 at end；It is wrapped in the winding of the insulating cylinder between two insulating ends 2, the winding includes the low pressure positioned at inner ring
Winding 3 and high-voltage winding 4 positioned at outer ring are equipped with insulating board 5 between the low pressure winding 3 and high-voltage winding 4, described
The two sides of insulating board 5 are equipped with stay 6, lead between insulating board 5 and low pressure winding 3 and insulating board 5 and high-voltage winding 4
It crosses stay 6 and is separated to form several oil ducts 7, the 1 outer diameter profile of insulating cylinder is by the equal orthodrome 8 of two diameters and position
The equal small arc-shaped 9 of two diameters in 8 both ends of orthodrome forms, and orthodrome 8 and 9 junction of small arc-shaped are tangent.
The insulating cylinder outer diameter profile is made of four arcs, and shape is close to ellipse, because circular arc intersection is also close to circle
Arc will not have wire turn protrusion phenomenon in winding technique, and change the global shape of winding, therefore not need to beat and shaping,
Will not have a rebound phenomenon.This contour structure saves the process beaten when coiling with shaping, improves the speed of coiling, together
When, winding is beaing with after big pressure shaping, and how much winding itself can have damage if insulating, therefore such structure more ensures
The reliability that winding itself insulate.
In the present invention, inwardly protruded step 10 is equipped on the inside of the insulating end 2；It is exhausted due to winding both ends
2 current potential of acies is higher, non-uniform electric, by lightning impulse and when switching overvoltage, is being easy breakdown, is passing through setting
Step 10 increases the end insulation height of preceding several layers of high pressures, and rear several layers of end insulation reduce, and play the excessive effect of wire turn, this
The shock resistance of winding can be improved in structure, can also reduce the height of end insulation on the whole, reduce cost；
In the present invention, the both ends of the stay 6 to 5 two sides of insulating board there are distance 5mm-6mm's
Distance；28mm-32mm is divided between the stay 6 and stay 6；The insulating board 5 with a thickness of 2mm.Oil duct 7
Using curtain oil channel structure, i.e., the structure of stay is stained in cardboard two sides.Oil duct between traditional high-low pressure uses corrugated board
As its major insulation, in coiling due to very big around clamp force, the mechanical strength of corrugated board is insufficient, and corrugated board is easy to be pressed
It is flat, cause main insulating structure to reduce, oil duct narrows, and influences temperature rise and insulation performance.And curtain oil duct is due to adding paper using stay
The structure of plate, therefore its mechanical strength is higher, will not narrow because deforming around clamp force, ensure that insulation between high-voltage coil and low-voltage coil away from
From.In addition, overall length=oil duct perimeter+30 of cardboard ~ 40mm (faying surface), both ends the staying to insulating board two sides of stay
There is the distance of distance 6mm, when guaranteeing that axial oil stream is stopped by cardboard or cushion block, oil stream can pass through the gap transverse flow of this 6mm
Out, the unimpeded of oil stream has been ensured, for this oil channel structure compared with traditional oil duct, mechanical strength is stronger, and the temperature rise of winding is lower.
The utility model is anti-prominent for improving winding by changing the internal diameter profile of winding, holding the structure of insulation and oil duct
Short-circuit capability and temperature rise model are sent out, compared with traditional oblong winding, mechanical strength is stronger, and electric property is more preferable, can have
The anti-sudden short circuit ability of the enhancing transformer of effect, the oil channel structure of winding can make oil stream more unimpeded, transformer are effectively reduced
Temperature rise.
Every technical staff's notice：Although the utility model is described according to above-mentioned specific embodiment, this
The invention thought of utility model is not limited to that utility model, and any repacking with inventive concept will all be included in this specially
In sharp scope of patent protection.
Claims (5)
1. a kind of abnormity distribution transformer winding construction, including insulating cylinder；The insulating end at insulating cylinder both ends is set；It is wrapped in two
The winding of insulating cylinder between a insulating end, it is characterised in that：The winding includes being located at the low pressure winding of inner ring and being located at
The high-voltage winding of outer ring is equipped with insulating board, the two sides of the insulating board between the low pressure winding and high-voltage winding
It is equipped with stay, is separated to form several by stay between insulating board and low pressure winding and insulating board and high-voltage winding
Oil duct, the insulating cylinder outer diameter profile is by the equal orthodrome of two diameters and positioned at two diameter phases at orthodrome both ends
Equal small arc-shapeds composition, orthodrome and small arc-shaped junction are tangent.
2. a kind of special-shaped distribution transformer winding construction according to claim 1, it is characterised in that：In the insulating end
Side is equipped with inwardly protruded step.
3. a kind of special-shaped distribution transformer winding construction according to claim 1 or 2, it is characterised in that：The stay
Both ends to insulating board two sides there are the distances of distance 5mm-6mm.
4. a kind of special-shaped distribution transformer winding construction according to claim 3, it is characterised in that：The stay and support
28mm-32mm is divided between item.
5. a kind of special-shaped distribution transformer winding construction according to claim 4, it is characterised in that：The insulating board
With a thickness of 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820539012.5U CN208126996U (en) | 2018-04-16 | 2018-04-16 | A kind of abnormity distribution transformer winding construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820539012.5U CN208126996U (en) | 2018-04-16 | 2018-04-16 | A kind of abnormity distribution transformer winding construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208126996U true CN208126996U (en) | 2018-11-20 |
Family
ID=64190233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820539012.5U Expired - Fee Related CN208126996U (en) | 2018-04-16 | 2018-04-16 | A kind of abnormity distribution transformer winding construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208126996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312493A (en) * | 2020-03-31 | 2020-06-19 | 济南清河电气有限公司 | Distribution transformer |
-
2018
- 2018-04-16 CN CN201820539012.5U patent/CN208126996U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312493A (en) * | 2020-03-31 | 2020-06-19 | 济南清河电气有限公司 | Distribution transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181120 Termination date: 20190416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |