CN204596598U - A kind of transformer with continuous high pressure winding - Google Patents
A kind of transformer with continuous high pressure winding Download PDFInfo
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- CN204596598U CN204596598U CN201520277401.1U CN201520277401U CN204596598U CN 204596598 U CN204596598 U CN 204596598U CN 201520277401 U CN201520277401 U CN 201520277401U CN 204596598 U CN204596598 U CN 204596598U
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- high pressure
- pressure winding
- transformer
- insulating barrier
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Abstract
The utility model discloses a kind of transformer with continuous high pressure winding, comprise: fuel tank, minicrystal iron core, winding and insulating barrier are formed, described winding is three-phase windings, be arranged at the skin of described minicrystal iron core, comprise successively from inside to outside: the first winding, described first winding becomes several shank type loop constructions by coiling continuous coiling; High pressure winding, described high pressure winding adopts Z-type connecting structure; Wherein, the neutral point of described high pressure winding carries out lightning protection earthing, the neutral lead ground connection of described first winding, is provided with the first insulating barrier and is provided with the second insulating barrier between described first winding and described high pressure winding between described first winding and described minicrystal iron core.It is high that the utility model solves transformer voltage between layers, and the layer insulation number of plies is many, and compression resistance is low, the problem that induction lightening shock test not easily passs through.
Description
Technical field
The utility model relates to a kind of transformer technology, particularly relates to a kind of transformer with continuous high pressure winding.
Background technology
In electric equipment and radio-circuit, transformer is commonly used for buck/boost, matched impedance, Secure isolation etc., classifies according to methods for cooling, and transformer can be divided into dry-type transformer and oil-filled transformer.
Oil-filled transformer needs due to fireproof, is generally arranged on independent transformer indoor or outdoors, has that cost is low, easy to maintenance, reliable operation, good heat dissipation, capability of overload are strong, conform feature widely.
Existing transformer adopts radiused winding to be applied to 35KV and following high-tension coil.This transformer anti lightning ability, its anti-thunder device is weak, and when lightning surge intrusion, the high-tension coil of transformer and low-voltage coil are easy to because immediate current, voltage are excessive, and are damaged, and even cause the accident.The voltage between layers existed for the high pressure radiused coil of conventional 35KV is high, and the layer insulation number of plies is many, the problem that withstand voltage, induction lightening shock test not easily passs through, and designs a kind of transformer that can solve the problem.
Utility model content
An object of the present utility model solves at least the problems referred to above and/or defect, and provide the advantage will illustrated at least below.
For the problems referred to above, the utility model also has an object to be to provide a kind of transformer with continuous high pressure winding, improves the anti-lightning ability of transformer.
Another object of the utility model is to provide a kind of transformer, improves its voltage endurance capability, reduces the insulation number of plies.
In order to realize these objects of the present utility model and other advantage, providing a kind of transformer with continuous high pressure winding, comprising: fuel tank, minicrystal iron core, winding and insulating barrier are formed.
Described winding is three-phase windings, is arranged at the skin of described minicrystal iron core, comprises successively from inside to outside:
First winding, described first winding becomes several shank type loop constructions by coiling continuous coiling;
High pressure winding, described high pressure winding adopts Z-type connecting structure;
Wherein, the neutral point of described high pressure winding carries out lightning protection earthing, the neutral lead ground connection of described first winding, is provided with the first insulating barrier and is provided with the second insulating barrier between described first winding and described high pressure winding between described first winding and described minicrystal iron core.
Preferably, wherein, the coil of described first winding and high pressure winding is dual-fiberglass wrapped flat copper wire.
Preferably, wherein, outer half section of coil of described high pressure winding is provided with the pressure regulation number of turn.
Preferably, wherein, the head end of described first winding and arrester ground connect.
Preferably, wherein, the ellipsoidal cross section of described iron core.
Preferably, wherein, described first insulating barrier is that polyester film is formed.
Preferably, wherein, described second insulating barrier is that oil resistant layer of silica gel is formed.
Preferably, wherein, shielding device is provided with between described first winding and high pressure winding.
The utility model has following beneficial effect: the structure that the utility model adopts a kind of new coil to arrange; the transformer with continuous high pressure winding has protection against lightning strikes measure; its anti-lightning performance is extremely strong; ensure that transformer can not be broken by invaded lightning wave; carry out duplicate protection from high pressure winding terminal and the first winding terminal, thus ensure that the safe operation becoming power distribution network.The utility model has larger economic worth.Screening arrangement of the present utility model is as the triple protection measure of this transformer; overvoltage in transformer, electric current can be guided in time the earth; have also been changed the electric capacity between coil simultaneously, the impact strength of transformer anti lightning can be improved and reduce transferring over-voltage.The utility model mesohigh winding adopts Z-type connection; first winding adopts the 4th kind of safeguard measure of shank type loop construction; no matter high pressure winding or the first winding are subject to impulse stress effect; the logical magnetic that the winding be hit produces on iron core is cancelled out each other; neither can produce electromagnetic coupled effect; thus enhancing its lightning protection effect, the width reducing transformation, to size, reduces the cost of transformer.
Accompanying drawing explanation
Fig. 1 is the connecting structure schematic diagram with the transformer of continuous high pressure winding described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to specification word to make those skilled in the art.
Fig. 1 shows according to a kind of way of realization of the present utility model, provides a kind of transformer with continuous high pressure winding, comprising: fuel tank 3, minicrystal iron core, winding and insulating barrier are formed,
Described winding is three-phase windings, is arranged at the skin of described minicrystal iron core, comprises successively from inside to outside:
First winding 1, described first winding 1 becomes several shank type loop constructions by coiling continuous coiling;
High pressure winding 2, described high pressure winding 2 adopts Z-type connecting structure;
Specify in existing transformer national standard that the bind mode of high pressure winding generally adopts Y connection, although this method has the effect preventing thunder and lightning, but can only prevent from entering from low pressure winding terminal the direct transform voltage caused, can not prevent thunder and lightning from invading the reversing transformation overvoltage caused from high pressure winding, the utility model adopts Z-type connecting structure and shank type loop construction respectively to high pressure winding 2 and the first winding 1, can reduce the electromagnetic induction transmission between high pressure winding 2 and the first winding 1.
Wherein, the neutral point of described high pressure winding 2 carries out lightning protection earthing, can reduce the vibration overvoltage amplitude of high pressure neutral point, the neutral lead ground connection of described first winding 1,
Be provided with the first insulating barrier between described first winding 1 and described minicrystal iron core and be provided with the second insulating barrier between described first winding 1 and described high pressure winding 2.
Wherein, the coil of described first winding 1 and high pressure winding 2 is dual-fiberglass wrapped flat copper wire, and its Inverter fed motor ability is strong, and mechanical strength is high, and when coiling, thin layer is not fragile.
Wherein, outer half section of coil of described high pressure winding 2 is provided with the pressure regulation number of turn.
Wherein, the head end of described first winding 1 and lightning arrester 6 ground connection connect.
Wherein, the ellipsoidal cross section of described iron core, adopts oval iron core to strengthen the mechanical strength of winding, enhance transformer anti-short circuit capability, and the iron core of ellipse does not need the spooling equipment of specialty, improves production efficiency.
Wherein, described first insulating barrier is that polyester film is formed, and it is withstand voltage height, temperature characterisitic is stablized.
Wherein, described second insulating barrier is that oil resistant layer of silica gel is formed, and its heat aging property is good, long service life.
Wherein, shielding device 5 is provided with between described first winding and high pressure winding.
Be filled with transformer oil 4 in oil tank of transformer 3, transformer oil 4 wraps up described high pressure winding 2, first winding 1, first insulating barrier and the second insulating barrier.Transformer oil 4 can well realize insulating, heat radiation and the effect of extinguishing arc.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in specification and execution mode utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (8)
1. there is a transformer for continuous high pressure winding, comprising: fuel tank, minicrystal iron core, winding and insulating barrier are formed, and it is characterized in that,
Described winding is three-phase windings, is arranged at the skin of described minicrystal iron core, comprises successively from inside to outside:
First winding, described first winding becomes several shank type loop constructions by coiling continuous coiling;
High pressure winding, described high pressure winding adopts Z-type connecting structure;
Wherein, the neutral point of described high pressure winding carries out lightning protection earthing, the neutral lead ground connection of described first winding, is provided with the first insulating barrier and is provided with the second insulating barrier between described first winding and described high pressure winding between described first winding and described minicrystal iron core.
2. have the transformer of continuous high pressure winding as claimed in claim 1, it is characterized in that, the coil of described first winding and high pressure winding is dual-fiberglass wrapped flat copper wire.
3. have the transformer of continuous high pressure winding as claimed in claim 2, it is characterized in that, outer half section of coil of described high pressure winding is provided with the pressure regulation number of turn.
4. have the transformer of continuous high pressure winding as claimed in claim 3, it is characterized in that, head end and the arrester ground of described first winding connect.
5. there is the transformer of continuous high pressure winding as claimed in claim 4, it is characterized in that, the ellipsoidal cross section of described iron core.
6. have the transformer of continuous high pressure winding as claimed in claim 5, it is characterized in that, described first insulating barrier is that polyester film is formed.
7. have the transformer of continuous high pressure winding as claimed in claim 6, it is characterized in that, described second insulating barrier is that oil resistant layer of silica gel is formed.
8. there is the transformer of continuous high pressure winding as claimed in claim 7, it is characterized in that, between described first winding and high pressure winding, be provided with shielding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520277401.1U CN204596598U (en) | 2015-04-30 | 2015-04-30 | A kind of transformer with continuous high pressure winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520277401.1U CN204596598U (en) | 2015-04-30 | 2015-04-30 | A kind of transformer with continuous high pressure winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204596598U true CN204596598U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520277401.1U Expired - Fee Related CN204596598U (en) | 2015-04-30 | 2015-04-30 | A kind of transformer with continuous high pressure winding |
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| CN (1) | CN204596598U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112287519A (en) * | 2020-10-09 | 2021-01-29 | 南方电网科学研究院有限责任公司 | Lightning stroke simulation model of three-phase transformer and construction method |
-
2015
- 2015-04-30 CN CN201520277401.1U patent/CN204596598U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112287519A (en) * | 2020-10-09 | 2021-01-29 | 南方电网科学研究院有限责任公司 | Lightning stroke simulation model of three-phase transformer and construction method |
| CN112287519B (en) * | 2020-10-09 | 2024-03-22 | 南方电网科学研究院有限责任公司 | Lightning stroke simulation model of three-phase transformer and construction method |
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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: 20150826 Termination date: 20180430 |