CN202454401U - Dry type transformer - Google Patents
Dry type transformer Download PDFInfo
- Publication number
- CN202454401U CN202454401U CN2012200487220U CN201220048722U CN202454401U CN 202454401 U CN202454401 U CN 202454401U CN 2012200487220 U CN2012200487220 U CN 2012200487220U CN 201220048722 U CN201220048722 U CN 201220048722U CN 202454401 U CN202454401 U CN 202454401U
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- CN
- China
- Prior art keywords
- pressure winding
- low
- voltage winding
- type transformer
- winding
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- Expired - Fee Related
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Abstract
The utility model discloses a dry type transformer and relates to the technical field of transformer equipment. The dry type transformer comprises an iron core, wherein a low-voltage winding and a high-voltage winding are wound on the iron core, the high-voltage winding is wound on the outer side of the low-voltage winding, the center axis lines of the low-voltage winding and the high-voltage winding are consistent, an insulating cloth cylinder is arranged between the low-voltage winding and the high-voltage winding, the low-voltage winding is formed by winding multiple sections of copper strips, and insulation layers are respectively arranged between the adjacent two layers of the copper strips. The dry type transformer disclosed by the utility model has the advantages of strong anti-short circuit capability, good heat radiation effect, low loss, good moisture-proof and pollution-proof performances, high reliability in operation, low operation cost, long service life and the like.
Description
Technical field
The utility model relates to the transformer equipment technical field, particularly a kind of dry-type transformer.
Background technology
Transformer is to utilize the principle of electromagnetic induction to change the device of alternating voltage, and it has a public iron core and the several windings crosslinked with it, and the locus between them is constant.When some windings when power supply is accepted AC energy, through the inductance magnetisation, magnetic electromagnetic induction principle induced electricity changes voltage, on remaining winding with same frequency, different voltage transmission AC energies.Transformer can be divided into oil-filled transformer and dry-type transformer by the type of cooling, and at present, mostly the low pressure winding of dry-type transformer is that the copper conductor coiling forms; It is little that this low-voltage, big electric current have an anti-short circuit capability with the coil of lead coiling, the ampere-turn imbalance, and radiating effect is poor; It is inhomogeneous to replace; Supplementary load loss are big, and outstanding problems such as artificial welding quality instability have seriously influenced the normal operation of transformer.
The utility model content
The utility model purpose is in order to overcome above-mentioned deficiency, provides that a kind of anti-short circuit capability is big, good heat dissipation effect, the low dry-type transformer of loss.
For solving the problems of the technologies described above, the technical scheme of the utility model is: a kind of dry-type transformer comprises iron core; Be wound with low pressure winding and high pressure winding on the said iron core; Said high pressure winding technique is in the outside of said low pressure winding, and said low pressure winding is consistent with the central axis of high pressure winding, is provided with the empire cloth tube between said low pressure winding and the high pressure winding; Said low pressure winding is formed by the coiling of multistage copper strips, is equipped with insulating barrier between the described adjacent two layers copper strips.
As a kind of improvement, said dry-type transformer also comprises attemperating unit.Said attemperating unit comprises the temperature element that is embedded in the low pressure winding.
As further improvement, the high pressure winding of said high pressure winding for adopting resin-cast to be shaped.
As further improvement, the class of insulation of said insulating barrier is the F level.
The beneficial effect of the utility model is: because the said dry-type transformer of the utility model comprises iron core and is wound on low pressure winding and the high pressure winding on the said iron core; Said high pressure winding technique is in the outside of said low pressure winding, and said low pressure winding is consistent with the central axis of high pressure winding, and said low pressure winding is formed by whole section Copper Foil coiling; Be equipped with insulating barrier between described every layer of Copper Foil; Strengthened the anti-short circuit capability of transformer, made the transformer ampere-turn equilibrium, good heat dissipation effect; Loss is low, has improved the operational reliability of transformer.
Because said transformer also comprises attemperating unit, said attemperating unit comprises the temperature element that is embedded in the low pressure winding, can detect the working temperature of winding automatically; And can overtemperature alarm; The normal operation of transformer has effectively been protected in tripping operations etc., has prolonged the useful life of transformer.
Because the high pressure winding adopts resin-cast to be shaped, and can play the effect of anti-moisture and soil-repellent, has strengthened the humidity resistance of transformer, draw through test, said transformer can normally operation under 100% humidity.
In sum, it is strong to the utlity model has anti-short circuit capability, good heat dissipation effect, and loss is low, and the anti-moisture and soil-repellent performance is good, and operational reliability is high, and operating cost is low, advantages such as long service life.
Description of drawings
Accompanying drawing is the structural representation of the utility model;
Among the figure: 1, low pressure winding, 2, the high pressure winding, 3, iron core, 4, the insulation folder, 5, the empire cloth tube, 6, temperature element, 7, blower fan.
Embodiment
Below in conjunction with accompanying drawing and embodiment, further set forth the utility model.
Shown in accompanying drawing, a kind of dry-type transformer comprises iron core 3; Be wound with low pressure winding 1 and high pressure winding 2 on the said iron core 3, said high pressure winding 2 is wound on the outside of said low pressure winding 1, and said low pressure winding 1 is consistent with the central axis of high pressure winding 2; Be provided with empire cloth tube 5 between said low pressure winding 1 and the high pressure winding 2; Said low pressure winding 1 is formed by the coiling of multistage copper strips, is equipped with insulating barrier between the described adjacent two layers copper strips, and the class of insulation of insulating barrier is the F level.Strengthen the anti-short circuit capability of transformer, made the transformer ampere-turn equilibrium, good heat dissipation effect, loss is low, has improved the operational reliability of transformer.
Said dry-type transformer also comprises attemperating unit, and said attemperating unit comprises the temperature element 6 that is embedded in the low pressure winding 1.Transformer adopting BWDK serial transformer thermometer; Temperature element 6 can measure temperature signal with PT100 temperature-sensitive temperature detecting resistance; Also the available heat galvanic couple measures temperature signal; Temperature element 6 is embedded in the first half of low pressure winding 1, can detect automatically and the touring working temperature that shows winding, and the function of overtemperature alarm and tripping operation is arranged.When the transformer load increase, operating temperature rises, when winding temperature reaches more than 110 ℃, and system alarm and 7 coolings of startup blower fan, blower fan 7 is arranged on the both sides of winding, and totally six, each one of every phase winding both sides; When winding temperature was low to moderate below 90 ℃, system stopped blower fan 7 automatically; When temperature always more than 110 ℃, and when in setting-up time, not descending, the normal operation of transformer has effectively been protected in system's automatic trip, has prolonged the useful life of transformer.
The high pressure winding of said high pressure winding 2 for adopting resin-cast to be shaped, resin embedding, solidified forming are adopted in the end of high pressure winding 2; Can play the effect of anti-moisture and soil-repellent; Strengthened the humidity resistance of transformer, drawn through test, said transformer can normally operation under 100% humidity.
The high magnetic conduction silicon steel sheet of said iron core 3 usefulness processes; 4 clampings of insulation folder also play a part to support winding; The lead-in wire copper bar welds through argon arc welding automatically.
The utility model is not limited to above-mentioned concrete execution mode, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within the protection range of the utility model.
Claims (5)
1. dry-type transformer; Comprise iron core, be wound with low pressure winding and high pressure winding on the said iron core, said high pressure winding technique is in the outside of said low pressure winding; Said low pressure winding is consistent with the central axis of high pressure winding; Be provided with the empire cloth tube between said low pressure winding and the high pressure winding, it is characterized in that: said low pressure winding is formed by the coiling of multistage copper strips, is equipped with insulating barrier between the described adjacent two layers copper strips.
2. dry-type transformer according to claim 1 is characterized in that: said dry-type transformer also comprises attemperating unit.
3. dry-type transformer according to claim 2 is characterized in that: said attemperating unit comprises the temperature element that is embedded in the low pressure winding.
4. dry-type transformer according to claim 1 is characterized in that: the high pressure winding of said high pressure winding for adopting resin-cast to be shaped.
5. dry-type transformer according to claim 1 is characterized in that: the class of insulation of said insulating barrier is the F level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200487220U CN202454401U (en) | 2012-02-15 | 2012-02-15 | Dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200487220U CN202454401U (en) | 2012-02-15 | 2012-02-15 | Dry type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202454401U true CN202454401U (en) | 2012-09-26 |
Family
ID=46870243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200487220U Expired - Fee Related CN202454401U (en) | 2012-02-15 | 2012-02-15 | Dry type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202454401U (en) |
-
2012
- 2012-02-15 CN CN2012200487220U patent/CN202454401U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20120926 Termination date: 20180215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |