CN102054571A - Dry type power transformer with voltage ratio of 33/22kV voltage level - Google Patents
Dry type power transformer with voltage ratio of 33/22kV voltage level Download PDFInfo
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- CN102054571A CN102054571A CN2010105504158A CN201010550415A CN102054571A CN 102054571 A CN102054571 A CN 102054571A CN 2010105504158 A CN2010105504158 A CN 2010105504158A CN 201010550415 A CN201010550415 A CN 201010550415A CN 102054571 A CN102054571 A CN 102054571A
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Abstract
The invention relates to a dry type power transformer with voltage ratio of 33/22kV voltage level. The dry type power transformer comprises upper clamping pieces, lower clamping pieces and an iron core which are arranged on a supporting frame, and a low-tension coil and a high-tension coil which are mounted on the iron core in sequence in a jacketing manner from inside to outside; an upper spacer block and a lower spacer block are arranged between the high-tension coil and the low-tension coil as well as between the upper clamping pieces and the lower clamping pieces respectively; a pressing nail penetrating a pressing nail sleeve on the upper clamping piece is pressed against a long circular groove on the upper surface of the upper spacer block through a pressing nail pad; a pair of a low-tension coil positioning rod and a high-tension coil positioning rod for fixing the low-tension coil and the high-tension coil is arranged on the opposite surfaces of the upper spacer blocks and the lower spacer blocks from inside to outside; insulating cylinders are arranged between the high-tension coil and the low-tension coil as well as between the low-tension coil and the iron core; and the upper ends and the lower ends of the two insulating cylinders are respectively inserted into corresponding circular long grooves on the opposite surfaces of the upper spacer blocks and the lower spacer blocks. The dry type power transformer has the advantages of good electric insulating property, high anti-lightning impact property, flame retardance, environmental protection, maintenance-free, security and reliability, and is suitable for a load center of urban electricity supply.
Description
Technical field:
The present invention relates to a kind of dry-type power transformer, especially a kind of voltage ratio is the dry-type power transformer of 33/22kV electric pressure.
Background technology:
At present, voltage ratio is the transformer of 33/22kV electric pressure in the electric power system, owing to require very high to electrical insulation properties, so it is in the majority in using with oil-filled transformer, need periodic maintenance but oil-filled transformer exists, detect oil, and inflammable and explosive, to problems such as environment pollute, can't use at the city load center.But continuous increase along with quickening of urbanization process and electricity need load, load centers such as downtown area, residential quarter, big-and-middle-sized factories and miness more and more go deep in high voltage, jumbo city web area electric substation, for appropriate cable is gone down town, put cable underground, the fire-fighting requirement of no oiling and fire protection flame retarding, the transformer of being badly in need of a kind of novel voltage levels replaces traditional oil-filled transformer.
Summary of the invention:
The invention provides the dry-type power transformer that a kind of voltage ratio is the 33/22kV electric pressure, its electrical insulation properties is good, and the lightning impulse resistant ability is strong, fire-retardant, environmental protection, non-maintaining, safe and reliable, be applicable to the urban electricity supply load center, solved problems of the prior art.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be: it comprises bracing frame, be located at upper clamping piece, lower clamping piece and iron core on the bracing frame, be sleeved on low-voltage coil and high-tension coil on the iron core from inside to outside successively, be respectively equipped with cushion block and lower cushion block between high and low pressure coil and upper clamping piece and lower clamping piece, the pressure nail that passes the pressure nail cover on the upper clamping piece is pressed against in the oblong slots of cushion block upper surface through pressing the nail pad; On the opposite face of last cushion block and lower cushion block, be respectively equipped with the low-voltage coil locating bar and the high-tension coil locating bar of a pair of fixedly low-voltage coil and high-tension coil from inside to outside, be respectively equipped with an insulating cylinder between high-tension coil and the low-voltage coil and between low-voltage coil and the iron core, insert respectively on the opposite face of cushion block and lower cushion block in each self-corresponding round elongated slot at the two ends up and down of two insulating cylinders.
The line cake of low-voltage coil and high-tension coil all adopts the multistage paper tinsel around structure, the outside band filler resin that coats of line cake.
Being provided with locking in the pressure portion of nailing on is equipped with female.
Dry-type transformer of the present invention adopts said structure, and electrical insulation properties is good, and the lightning impulse resistant ability is strong, fire-retardant, environmental protection, non-maintaining, safe and reliable, well satisfied the requirement that the urban electricity supply load center does not have oiling, fire protection flame retarding, guaranteed the normal safe operation of electrical network.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A portion structure for amplifying schematic diagram among Fig. 1.
Among the figure, 1, bracing frame; 2, upper clamping piece; 3, lower clamping piece; 4, iron core; 5, low-voltage coil; 6, high-tension coil; 7, go up cushion block; 8, lower cushion block; 9, press the nail cover; 10, press nail; 11, press the nail pad; 12, oblong slots; 13, low-voltage coil locating bar; 14, high-tension coil locating bar; 15, insulating cylinder; 16, justify elongated slot; 17, locking is equipped with female.
Embodiment:
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the present invention will be described in detail.
Shown in Fig. 1～2, the present invention includes bracing frame 1, be located at upper clamping piece 2, lower clamping piece 3 and iron core 4 on the bracing frame 1, be sleeved on low-voltage coil 5 and high-tension coil 6 on the iron core 4 from inside to outside successively, be respectively equipped with cushion block 7 and lower cushion block 8 between high and low pressure coil and upper clamping piece 2 and lower clamping piece 3, the pressure nail 10 that passes the pressure nail cover 9 on the upper clamping piece 2 is pressed against in the oblong slots 12 of cushion block 7 upper surfaces through pressing nail pad 11; On the opposite face of last cushion block 7 and lower cushion block 8, be respectively equipped with the low-voltage coil locating bar 13 and the high-tension coil locating bar 14 of a pair of fixedly low-voltage coil 5 and high-tension coil 6 from inside to outside, insert respectively at the two ends up and down that are respectively equipped with an insulating cylinder 15, two insulating cylinders 15 between high-tension coil 6 and the low-voltage coil 5 and between low-voltage coil 5 and the iron core 4 on the opposite face of cushion block 7 and lower cushion block 8 in each self-corresponding round elongated slot 16.
The line cake of low-voltage coil 5 and high-tension coil 6 all adopts the multistage paper tinsel around structure, the outside band filler resin that coats of line cake.
Pressing nail 10 tops to be provided with locking mother 17 fully.After pressing nail 10 to compress high-tension coil 6 and low-voltage coil 5, rotation lock is equipped with female 17 will press nail 10 lockings, and the preventer body is loosening.
Dry-type transformer of the present invention adopts said structure, and electrical insulation properties is good, and the lightning impulse resistant ability is strong, fire-retardant, environmental protection, non-maintaining, safe and reliable, well satisfied the requirement that the urban electricity supply load center does not have oiling, fire protection flame retarding, guaranteed the normal safe operation of electrical network.
The present invention does not describe part in detail, is those skilled in the art of the present technique's known technology.
Claims (3)
1. dry-type power transformer that voltage ratio is the 33/22kV electric pressure, comprise bracing frame, be located at upper clamping piece, lower clamping piece and iron core on the bracing frame, be sleeved on low-voltage coil and high-tension coil on the iron core from inside to outside successively, it is characterized in that: be respectively equipped with cushion block and lower cushion block between high and low pressure coil and upper clamping piece and lower clamping piece, the pressure nail that passes the pressure nail cover on the upper clamping piece is pressed against in the oblong slots of cushion block upper surface through pressing the nail pad; On the opposite face of last cushion block and lower cushion block, be respectively equipped with the low-voltage coil locating bar and the high-tension coil locating bar of a pair of fixedly low-voltage coil and high-tension coil from inside to outside, be respectively equipped with an insulating cylinder between high-tension coil and the low-voltage coil and between low-voltage coil and the iron core, insert respectively on the opposite face of cushion block and lower cushion block in each self-corresponding round elongated slot at the two ends up and down of two insulating cylinders.
2. a kind of voltage ratio according to claim 1 is the dry-type power transformer of 33/22kV electric pressure, it is characterized in that: the line cake of low-voltage coil and high-tension coil all adopts the multistage paper tinsel around structure, the outside band filler resin that coats of line cake.
3. a kind of voltage ratio according to claim 1 is the dry-type power transformer of 33/22kV electric pressure, it is characterized in that: be provided with locking in the pressure portion of nailing on and be equipped with female.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105504158A CN102054571A (en) | 2010-11-19 | 2010-11-19 | Dry type power transformer with voltage ratio of 33/22kV voltage level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105504158A CN102054571A (en) | 2010-11-19 | 2010-11-19 | Dry type power transformer with voltage ratio of 33/22kV voltage level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102054571A true CN102054571A (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105504158A Pending CN102054571A (en) | 2010-11-19 | 2010-11-19 | Dry type power transformer with voltage ratio of 33/22kV voltage level |
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| CN (1) | CN102054571A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882258A (en) * | 2015-06-26 | 2015-09-02 | 镇江天力变压器有限公司 | Epoxy pouring dry-type transformer cushion block structure |
| CN105304291A (en) * | 2014-07-18 | 2016-02-03 | 扬州华鼎电器有限公司 | Foil winding dry type transformer and production method thereof |
| CN106158300A (en) * | 2015-04-24 | 2016-11-23 | 上海飞晶电气股份有限公司 | A kind of dry-type transformer main airway insulation system of tape insulation cylinder |
| CN108010685A (en) * | 2017-10-12 | 2018-05-08 | 安徽省神虹变压器股份有限公司 | A kind of distribution transformer iron core fastener |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5383266A (en) * | 1993-03-17 | 1995-01-24 | Square D Company | Method of manufacturing a laminated coil to prevent expansion during coil loading |
-
2010
- 2010-11-19 CN CN2010105504158A patent/CN102054571A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5383266A (en) * | 1993-03-17 | 1995-01-24 | Square D Company | Method of manufacturing a laminated coil to prevent expansion during coil loading |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304291A (en) * | 2014-07-18 | 2016-02-03 | 扬州华鼎电器有限公司 | Foil winding dry type transformer and production method thereof |
| CN105304291B (en) * | 2014-07-18 | 2017-06-16 | 扬州华鼎电器有限公司 | A kind of paper tinsel is around dry-type transformer and its production method |
| CN106158300A (en) * | 2015-04-24 | 2016-11-23 | 上海飞晶电气股份有限公司 | A kind of dry-type transformer main airway insulation system of tape insulation cylinder |
| CN104882258A (en) * | 2015-06-26 | 2015-09-02 | 镇江天力变压器有限公司 | Epoxy pouring dry-type transformer cushion block structure |
| CN108010685A (en) * | 2017-10-12 | 2018-05-08 | 安徽省神虹变压器股份有限公司 | A kind of distribution transformer iron core fastener |
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Application publication date: 20110511 |