CN2426636Y - Open ventilating dry type power transformer - Google Patents
Open ventilating dry type power transformer Download PDFInfo
- Publication number
- CN2426636Y CN2426636Y CN 00215100 CN00215100U CN2426636Y CN 2426636 Y CN2426636 Y CN 2426636Y CN 00215100 CN00215100 CN 00215100 CN 00215100 U CN00215100 U CN 00215100U CN 2426636 Y CN2426636 Y CN 2426636Y
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- China
- Prior art keywords
- voltage coil
- low
- type power
- coil
- power transformer
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- Expired - Fee Related
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Abstract
The utility model relates to an open ventilating dry type power transformer, which comprises an iron core, a high-voltage coil, a low-voltage coil, an insulating cylinder which is arranged between the iron core, the high-voltage coil and the low-voltage and a supporting bar which is arranged at the outside of the insulating cylinder. The end part of the iron core, the end part of the high-voltage coil and the end part of the low-voltage coil are provided with insulating mechanisms. The utility model is characterized in that the end part of the high-voltage coil and the end part of the low-voltage coil are provided with independent insulators. The insulators are connected with clamping pieces after the insulators are connected by press plates. The utility model makes the end parts of the coils and the inner side of the iron core be in an open state, improve the ventilating radiating conditions of the coils and the iron core and enhances a fireproof performance, wherein, the insulators can be made of ceramic materials to enhance the moistureproof performance of the utility model.
Description
The utility model is a kind of open-ventilating dry-type power transformer.
Transformer mainly contains the cast dry-type power transformer and floods two kinds of dry-type power transformers at present.The cast dry-type power transformer mainly is the cast raw material with epoxy resin, the interpolation silica flour that has, and what have does not add silica flour, forms but coil poured into a mould in vacuum equipment.This transformer manufacturing equipment and mould costliness, complex manufacturing, thermal endurance class can only reach the F level; And epoxy resin is organic substance, at high temperature also has combustibility, can produce a large amount of cigarettes when meeting fire.The winding of impregnated dry-type power transformer forms with the glass fiber covered wire coiling, the insulating cylinder of device body insulation and stay by respectively independently paper material make, add the man-hour stay and just lean against simply outside the insulating cylinder, be fixed by the winding lead, stay moves easily, and the location is difficult for accurately.And the insulating cylinder of papery and the stay humidity resistance is poor, the high temperature insulation grade is low.In addition, the insulation with high-tension coil and low-voltage coil end unshakable in one's determination of existing dry-type power transformer is all-in-one-piece end insulation and core insulation, its insulating material dispels the heat its inner being difficult to the sealing of the gap between the three, thereby has influenced the useful life of transformer.
The purpose of this utility model is: design the good open-ventilating dry-type power transformer of a kind of handling ease, ventilation and heat and humidity resistance.
Basic structure of the present utility model is same as the prior art, it comprises insulating cylinder and the outer stay of insulating cylinder between iron core, high-tension coil, low-voltage coil, the three, there is insulating mechanism iron core, high-tension coil and low-voltage coil end, characteristics of the present utility model are at high-tension coil and low-voltage coil end independently insulator to be housed separately, and they connect the back by pressing plate and are connected with core clamping.
The technical solution of the utility model is that the enclosed construction with the two ends of former iron core, high-tension coil and low-voltage coil changes unenclosed construction into, because the gap between the insulator is bigger, thereby can make end winding and inboard unshakable in one's determination be in opening-wide state, improve coil and ventilation and heat condition unshakable in one's determination, improved fire protecting performance.Insulator wherein can also be made by ceramic material, thereby improves humidity resistance of the present utility model.
In the utility model, insulating cylinder and stay can be made as one with pottery or other material, this structure needn't be considered the orientation problem of stay when adding the formula coil, and it can also guarantee the crudy of transformer, and make its processing more easy, thereby alleviate working strength of workers.If use ceramic material can also make it have the good characteristics of moisture effect.
For adapting to the technological requirement of pottery processing, at least a portion in the cross section of the utility model stay can be trapezoidal: be part trapezoidal or its close its outside as its whole cross section and be trapezoidal and rectangular near inboard part.
In addition, for improving radiating effect of the present utility model, high-tension coil can adopt the disc coil structure, cushion block between each line cake also can be made by ceramic material, equally, for ease of processing, the coupling part between its notch of the groove of cushion block side and the bottom land is a plane inclined, and promptly the groove of cushion block side is a dovetail groove.For further guaranteeing protection against the tide and heat-resisting effect, the insulator in the utility model is preferably also made by ceramic material.
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
Fig. 1 is the cutaway view of the utility model embodiment front view;
Fig. 2 is the cross section phantom of Fig. 1;
Fig. 3 is the vertical view of insulating cylinder and stay between the high and low pressure coil;
Fig. 4 is the vertical view of present embodiment cushion block;
Wherein, 1-core clamping, 2-iron core, 3-pressing plate, 4-insulating cylinder, 5-low-voltage coil, 6-insulating cylinder, 7-high-tension coil, 8-cushion block, 9-stay, 10-insulator.
As shown in the figure, present embodiment comprises two insulating cylinders 4,6 between unshakable in one's determination 2, low-voltage coil 5, high-tension coil 7 and the three and the insulator 10 between high and low pressure coil and the core clamping 1.In the present embodiment, unshakable in one's determination 2 and and low-voltage coil 5 between insulating cylinder 4 structures same as the prior art, repeat no more here, but this insulating cylinder 4 is made by ceramic material.The high-tension coil 7 of present embodiment adopts cake formula structures, and cushion block between each line cake 8 is made by ceramic material, and the groove of its side is a dovetail groove.The insulating cylinder 6 between high-tension coil 7 and low-voltage coil 5 and the stay 9 of lateral surface thereof are also made by ceramic material, and insulating cylinder 6 is made as one with stay 9, and wherein, stay 9 cross sections are following shape: its inside part is rectangular, and its Outboard Sections is trapezoidal.Removed the end insulation of low-voltage coil 5 in the present embodiment, the high and low pressure coil respectively by separately independently pottery compress insulator 10 and be connected with pressing plate 3, pressing plate 3 is fixed on the core clamping 1.
Claims (4)
1, a kind of open-ventilating dry-type power transformer, comprise the outer stay (9) of insulating cylinder (4), (6) and insulating cylinder (6) between iron core (2), high-tension coil (7), low-voltage coil (5), the three, there is insulating mechanism (2) unshakable in one's determination, high-tension coil (7) and low-voltage coil (5) end, it is characterized in that: independently insulator (10) is equipped with separately in high-tension coil (7) and low-voltage coil (5) end, and they connect the back by pressing plate (3) and are connected with core clamping (1).
2, open-ventilating dry-type power transformer according to claim 1 is characterized in that: the insulating cylinder between the high and low pressure coil (6) is made as one with stay (9).
3, open-ventilating dry-type power transformer according to claim 2 is characterized in that: the Outboard Sections in said stay (9) cross section is trapezoidal, and its inside part is rectangular.
4, according to claim 1 or 2 or 3 described open-ventilating dry-type power transformers, it is characterized in that: high-tension coil (7) is formed cushion block 98 by cushion block (8) and the isolated line cake of cushion block (8)) notch and the face between the bottom land of side be plane inclined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00215100 CN2426636Y (en) | 2000-06-15 | 2000-06-15 | Open ventilating dry type power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00215100 CN2426636Y (en) | 2000-06-15 | 2000-06-15 | Open ventilating dry type power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2426636Y true CN2426636Y (en) | 2001-04-11 |
Family
ID=33581108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00215100 Expired - Fee Related CN2426636Y (en) | 2000-06-15 | 2000-06-15 | Open ventilating dry type power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2426636Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522184A (en) * | 2011-12-28 | 2012-06-27 | 上海施能电器设备厂 | Ventilation and interlayer partition structure for high-power transformer coils |
| CN101834058B (en) * | 2010-05-12 | 2013-01-02 | 济南特变电气有限公司 | Fully-closed ceramic sintered dry-type transformer coil and manufacturing method thereof |
| CN104795212A (en) * | 2015-04-14 | 2015-07-22 | 海鸿电气有限公司 | Three-dimensional wound core open-type dry type transformer with voltage grade being 110kV and above |
| CN105679503A (en) * | 2016-01-13 | 2016-06-15 | 王丹 | High-performance distribution transformer |
| CN105826052A (en) * | 2016-06-09 | 2016-08-03 | 苏州高精特专信息科技有限公司 | Low-voltage coil and high-voltage coil for dry-type transformer |
| WO2022134755A1 (en) * | 2020-12-22 | 2022-06-30 | 上海置信电气有限公司 | Insulating device for open-type dry-type transformer, and open-type dry-type transformer |
-
2000
- 2000-06-15 CN CN 00215100 patent/CN2426636Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834058B (en) * | 2010-05-12 | 2013-01-02 | 济南特变电气有限公司 | Fully-closed ceramic sintered dry-type transformer coil and manufacturing method thereof |
| CN102522184A (en) * | 2011-12-28 | 2012-06-27 | 上海施能电器设备厂 | Ventilation and interlayer partition structure for high-power transformer coils |
| CN104795212A (en) * | 2015-04-14 | 2015-07-22 | 海鸿电气有限公司 | Three-dimensional wound core open-type dry type transformer with voltage grade being 110kV and above |
| CN105679503A (en) * | 2016-01-13 | 2016-06-15 | 王丹 | High-performance 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 |
| CN105826052A (en) * | 2016-06-09 | 2016-08-03 | 苏州高精特专信息科技有限公司 | Low-voltage coil and high-voltage coil for dry-type transformer |
| WO2022134755A1 (en) * | 2020-12-22 | 2022-06-30 | 上海置信电气有限公司 | Insulating device for open-type dry-type transformer, and open-type dry-type transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |