CN201204118Y - Resin insulated dry power transformer - Google Patents
Resin insulated dry power transformer Download PDFInfo
- Publication number
- CN201204118Y CN201204118Y CNU2008200494251U CN200820049425U CN201204118Y CN 201204118 Y CN201204118 Y CN 201204118Y CN U2008200494251 U CNU2008200494251 U CN U2008200494251U CN 200820049425 U CN200820049425 U CN 200820049425U CN 201204118 Y CN201204118 Y CN 201204118Y
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Abstract
The utility model relates to a transformer technology, particularly to a resin insulation dry type transformer, comprising a three-phase three-post type iron core post arranged in parallel, a low tension coil and a high tension coil sleeved axially on the iron core post from inside to outside, wherein the low tension coil is composed of an inner low tension coil and an outer low tension coil connected in series, and a plurality of separating bars are arranged between the inner low tension coil and the outer low tension coil, and a first heat emission flue is formed between the inner low tension coil and the outer low tension coil. A resin insulation protective layer including quartz powder fillers are arranged by vacuum casting on the high tension coil. A positioning cushion is respectively arranged on two ends of the outer low tension coil and the high tension coil. A second heat emission flue is formed between the outer lower tension coil and the inner wall protective layer of the high tension coil. The utility model has the advantages of compact structure, small volume, light weight, excellent insulatibity and fire security, which is widely applied in a power transmission and transformation system.
Description
Technical field:
The utility model relates to a kind of transformer technology, especially a kind of resin-insulated dry power transformer.
Background technology:
The kind of transformer is a lot, and oil-filled transformer, dry-type transformer etc. are arranged.The poured with epoxy resin dry-type transformer has its unique advantage, rises since the middle and later periods in last century, and dry-type transformer is worldwide developed rapidly.At present, along with the energy-conservation needs of power transformer, electricity consumption department constantly requires low-loss, high performance transformer, and resin-insulated dry power transformer is widely used in city and the skyscraper, and is strict more to energy-conservation and reliable requirement.
Summary of the invention
The purpose of this utility model is comprehensively the function and the characteristics of existing dry-type transformer, and a kind of compact conformation that has is provided, and volume is little, in light weight, good insulation properties and fire savety and resin-insulated dry power transformer that can satisfy market demand.
The utility model, comprise the three-phase three-limb iron core column that is set up in parallel, low-voltage coil and the high-tension coil of coaxial package on iron core column successively from the inside to the outside, low-voltage coil adopts DMD insulated with material and protection, between iron core column and low-voltage coil, the support rubber bar is set; Low-voltage coil is made of interior low-voltage coil and outer low-voltage coil, interior low-voltage coil and outer low-voltage coil are for being connected in series, be provided with some dividers between interior low-voltage coil and the outer low-voltage coil, between interior low-voltage coil, outer low-voltage coil and divider, form first heat dissipation wind channel; Vacuum pouring contains the insulation resin protective layer of silica flour on described high-tension coil, and the two ends between low-voltage coil and the high-tension coil are provided with spacer pad outside, forms second heat dissipation wind channel between outer low-voltage coil and the high-tension coil inner wall protection layer.
The utility model, on described iron core, be provided with upper clamping piece and lower clamping piece, be provided with arm-tie and form framework between upper clamping piece and lower clamping piece, low-voltage coil and high-tension coil are fixed on the described framework by resin cushion block roof pressure, and framework is connected with footing by the footing cushion block.
The utility model can be provided with blower fan on described footing, the air outlet of blower fan is corresponding with heat dissipation wind channel.
The utility model, described spacer pad can be selected "T"-shaped silicon rubber cushion block for use.
The utility model also can be provided with 2-8 bar binding strap on described iron core column.
The utility model has compact conformation, volume is little, in light weight, good insulation properties and fire savety etc. advantage, its performance all meets national standard, major parameter all is better than national standard.Can be widely used in places, particularly installing space such as power transmission and transformation system, skyscraper, commercial center, stadiums limited, must more can give full play to little, the fire-retardant superiority of its volume near load center and have the occasion of special fire protection requirement.
Description of drawings:
Fig. 1 is the structural principle front view of embodiment;
Fig. 2 is the longitudinal sectional view of single-phase transformer;
Fig. 3 is the transverse sectional view of single-phase transformer.
Among the figure, 1, iron core column 2, low-voltage coil 21, interior low-voltage coil 22, outer low-voltage coil 3, high-tension coil 4, insulating protective layer 5, support rubber bar 6, divider 7, first heat dissipation wind channel 8, second heat dissipation wind channel 9, silicon rubber cushion block 10, upper clamping piece 11, lower clamping piece 12, arm-tie 13, resin cushion block 14, footing cushion block 15, footing 16, blower fan 17, air outlet 18, binding strap 19, temperature display control unit.
Embodiment:
With reference to Fig. 1-Fig. 3, this resin-insulated dry power transformer comprises the three-phase three-limb iron core column 1 that is set up in parallel, and on each iron core column phase transformer is set, and every phase transformer just constitutes three-phase power transformer by the connection of coil lead.Every phase transformer comprises from the inside to the outside low-voltage coil and the high-tension coil 3 of coaxial package on iron core column 1 successively.
Low-voltage coil 2 adopts Copper Foil and epoxy resin impregnated cloth together to twine, adopt same Copper Foil coiling during coiling and divide inside and outside two sections, that is: low-voltage coil 2 is made of interior low-voltage coil 21 and outer low-voltage coil 22, interior low-voltage coil 21 and outer low-voltage coil 22 are for being connected in series, be provided with some (present embodiment is 12) divider 6 between interior low-voltage coil 21 and the outer low-voltage coil 22, thereby form heat dissipation wind channel 7, for the cooling of coil provides gas passage, after the low-voltage coil coiling is finished, be put into and be cured processing in the drying oven, the coil two ends cover with epoxy resin then, with assurance coil complete closed, and form rigid unitary.Because low-voltage coil has adopted foil coil, has reduced brow leakage, has improved the product reliability of operation greatly, has strengthened the ability of anti-sudden short circuit.This winding method of low-voltage coil has following advantage: 1, thermal diffusivity is good.2, temperature rise is even.3, can reduce potential focus.
It is the enamel-cover flat type copper wire coiling of 155 grades that high-tension coil 3 adopts heatproof; adopt multistage (present embodiment adopts 4 sections) drum type brake pagoda structure; adopt the resin vacuum pouring of band quartz powder filler; behind hot setting, form the coil of a fiberglass body; the surface forms insulation resin protective layer 4, to obtain stable insulation property and higher reliability.Because the resin coefficient of expansion and the copper of band quartz powder filler reach unanimity, and both reduce production costs, also solved the coil problem of cracking easily, make coil can bear the impact of internal stress and external stress well.
Iron core adopts 30Q-120 grain orientation cold-reduced silicon sheet, 45 ℃ of full sloping step formula four-seams, iron core column 1 adopts 3-8 bar (present embodiment is 5) binding strap 18 colligations, and the surface is coated with overcoat (not drawing among the figure), help reducing no-load loss and no-load current, effectively reduce noise of transformer.Take drawplate type to press pin structure on the structure, guaranteed the reliability of transformer.
When assembling, between iron core column and low-voltage coil, support rubber bar 5 is set; Two ends between low-voltage coil 22 and the high-tension coil 3 are provided with "T"-shaped silicon rubber cushion block 9 outside, make between low-voltage coil 2 and the high-tension coil 3 inner wall protection layers 4 and form the gap, and promptly heat dissipation wind channel 8; On "T"-shaped silicon rubber cushion block 9, resin cushion block 13 is set again, low-voltage coil and high-tension coil are fixed on the framework that is made of upper clamping piece 10, lower clamping piece 11 and arm-tie 12 by "T"-shaped silicon rubber cushion block 9 and resin cushion block 13 roof pressures, and framework is connected with footing 15 by footing cushion block 14.
For helping the transformer heat radiation, 6 blower fans 16 are set on footing 15,1 blower fan promptly is set in the both sides of every phase transformer, the air outlet 17 of blower fan is aimed at heat dissipation wind channel 7 and 8.For saves energy and useful life of improving blower fan, temperature display control unit 19 is set, when the transformer temperature inside surpasses set point, control device will start blower fan work, to the transformer cooling of drying.
Claims (5)
1, a kind of resin-insulated dry power transformer, comprise the three-phase three-limb iron core column (1) that is set up in parallel, low-voltage coil (2) and the high-tension coil (3) of coaxial package on iron core column successively from the inside to the outside, low-voltage coil adopts DMD insulated with material and protection, it is characterized in that: between iron core column and low-voltage coil, support rubber bar (5) is set; Low-voltage coil is made of interior low-voltage coil (21) and outer low-voltage coil (22), interior low-voltage coil (21) and outer low-voltage coil (22) are for being connected in series, be provided with some dividers (6) between interior low-voltage coil (21) and the outer low-voltage coil (22), between interior low-voltage coil (21), outer low-voltage coil (22) and divider (6), form first heat dissipation wind channel (7); Go up the insulation resin protective layer (4) that vacuum pouring contains quartz powder filler at described high-tension coil (3); two ends between low-voltage coil (22) and the high-tension coil (3) outside; be provided with spacer pad (9), form second heat dissipation wind channel (8) between outer low-voltage coil (22) and high-tension coil (3) the inner wall protection layer (4).
2, resin-insulated dry power transformer according to claim 1, it is characterized in that: on iron core, be provided with upper clamping piece (10) and lower clamping piece (11), between upper clamping piece (10) and lower clamping piece (11), be provided with arm-tie (12) and form framework, low-voltage coil (2) and high-tension coil (3) are fixed on the described framework by resin cushion block (13) roof pressure, and framework is connected with footing (15) by footing cushion block (14).
3, resin-insulated dry power transformer according to claim 2 is characterized in that: on described footing (15), blower fan (16) is set, the air outlet of blower fan (17) is corresponding with heat dissipation wind channel (7,8).
4, resin-insulated dry power transformer according to claim 1 is characterized in that: described spacer pad (9) is "T"-shaped silicon rubber cushion block.
5, according to the arbitrary described resin-insulated dry power transformer of claim 1-4, it is characterized in that: on described iron core column (1), be provided with 3-8 bar binding strap (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200494251U CN201204118Y (en) | 2008-06-18 | 2008-06-18 | Resin insulated dry power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200494251U CN201204118Y (en) | 2008-06-18 | 2008-06-18 | Resin insulated dry power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201204118Y true CN201204118Y (en) | 2009-03-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200494251U Expired - Fee Related CN201204118Y (en) | 2008-06-18 | 2008-06-18 | Resin insulated dry power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201204118Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903493A (en) * | 2012-10-29 | 2013-01-30 | 常熟市森源电气科技有限公司 | Cushion block for epoxy resin pouring dry type transformer |
| CN104240907A (en) * | 2014-08-28 | 2014-12-24 | 江苏亚威变压器有限公司 | Novel energy-saving resin insulation dry-type electric transformer |
| CN105244149A (en) * | 2015-11-18 | 2016-01-13 | 苏州安泰变压器有限公司 | Photovoltaic power generation dry-type transformer |
| CN105448496A (en) * | 2016-01-11 | 2016-03-30 | 吴优 | Dry-type power transformer |
| CN105448495A (en) * | 2016-01-11 | 2016-03-30 | 吴优 | High-voltage power transformer |
| CN105448497A (en) * | 2016-01-11 | 2016-03-30 | 吴优 | Dry-type distribution transformer |
| CN105469961A (en) * | 2016-01-13 | 2016-04-06 | 王丹 | Three-phase dried transformer |
| CN105679503A (en) * | 2016-01-13 | 2016-06-15 | 王丹 | High-performance distribution transformer |
| CN107204233A (en) * | 2016-03-18 | 2017-09-26 | 福建新大陆环保科技有限公司 | A kind of Large Copacity dry type high frequency high voltage transformer |
| CN107887139A (en) * | 2017-11-30 | 2018-04-06 | 浙江派尔电气有限公司 | A kind of 10KV dry-type transformers new coil structure |
| CN108511163A (en) * | 2018-03-26 | 2018-09-07 | 江苏亚威变压器有限公司 | A kind of high frequency transformer and its resin-cast method |
| WO2018176867A1 (en) * | 2017-04-01 | 2018-10-04 | 海鸿电气有限公司 | Novel three-dimensional wound core pull plate structure for transformer |
| CN110021472A (en) * | 2019-03-21 | 2019-07-16 | 南京智达电气设备有限公司 | A kind of new dry-type transformer |
| CN113708705A (en) * | 2021-08-17 | 2021-11-26 | 乐山一拉得电网自动化有限公司 | Prefabricated cabin type intelligent high-power variable frequency drilling machine electric control system |
-
2008
- 2008-06-18 CN CNU2008200494251U patent/CN201204118Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903493A (en) * | 2012-10-29 | 2013-01-30 | 常熟市森源电气科技有限公司 | Cushion block for epoxy resin pouring dry type transformer |
| CN104240907A (en) * | 2014-08-28 | 2014-12-24 | 江苏亚威变压器有限公司 | Novel energy-saving resin insulation dry-type electric transformer |
| CN105244149A (en) * | 2015-11-18 | 2016-01-13 | 苏州安泰变压器有限公司 | Photovoltaic power generation dry-type transformer |
| CN105448496A (en) * | 2016-01-11 | 2016-03-30 | 吴优 | Dry-type power transformer |
| CN105448495A (en) * | 2016-01-11 | 2016-03-30 | 吴优 | High-voltage power transformer |
| CN105448497A (en) * | 2016-01-11 | 2016-03-30 | 吴优 | Dry-type distribution transformer |
| CN105679503B (en) * | 2016-01-13 | 2018-06-22 | 京瑞恒诚电气(北京)股份有限公司 | A kind of distribution transformer |
| CN105469961A (en) * | 2016-01-13 | 2016-04-06 | 王丹 | Three-phase dried transformer |
| CN105679503A (en) * | 2016-01-13 | 2016-06-15 | 王丹 | High-performance distribution transformer |
| CN107204233A (en) * | 2016-03-18 | 2017-09-26 | 福建新大陆环保科技有限公司 | A kind of Large Copacity dry type high frequency high voltage transformer |
| WO2018176867A1 (en) * | 2017-04-01 | 2018-10-04 | 海鸿电气有限公司 | Novel three-dimensional wound core pull plate structure for transformer |
| US11295889B2 (en) | 2017-04-01 | 2022-04-05 | Haihong Electric Co., Ltd. | Pulling plate structure for a three-dimensional wound core of transformer |
| CN107887139A (en) * | 2017-11-30 | 2018-04-06 | 浙江派尔电气有限公司 | A kind of 10KV dry-type transformers new coil structure |
| CN108511163A (en) * | 2018-03-26 | 2018-09-07 | 江苏亚威变压器有限公司 | A kind of high frequency transformer and its resin-cast method |
| CN110021472A (en) * | 2019-03-21 | 2019-07-16 | 南京智达电气设备有限公司 | A kind of new dry-type transformer |
| CN113708705A (en) * | 2021-08-17 | 2021-11-26 | 乐山一拉得电网自动化有限公司 | Prefabricated cabin type intelligent high-power variable frequency drilling machine electric control system |
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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: 20090304 Termination date: 20150618 |
|
| EXPY | Termination of patent right or utility model |