CN203456258U - Main insulation structure of oil-immersed transformer - Google Patents
Main insulation structure of oil-immersed transformer Download PDFInfo
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- CN203456258U CN203456258U CN201320600708.1U CN201320600708U CN203456258U CN 203456258 U CN203456258 U CN 203456258U CN 201320600708 U CN201320600708 U CN 201320600708U CN 203456258 U CN203456258 U CN 203456258U
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- oil
- tension coil
- main insulation
- insulation structure
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- 238000009413 insulation Methods 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 claims abstract description 22
- 239000011521 glass Substances 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 238000004026 adhesive bonding Methods 0.000 claims description 13
- 235000003283 Pachira macrocarpa Nutrition 0.000 claims description 12
- 241001083492 Trapa Species 0.000 claims description 12
- 235000014364 Trapa natans Nutrition 0.000 claims description 12
- 235000009165 saligot Nutrition 0.000 claims description 12
- 239000011087 paperboard Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 229910003460 diamond Inorganic materials 0.000 abstract 2
- 239000010432 diamond Substances 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 241001070941 Castanea Species 0.000 description 1
- 235000014036 Castanea Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a main insulation structure of an oil-immersed transformer. The main insulation structure is characterized in that a high-tension coil and a low-tension coil of the oil-immersed transformer are both of a cylinder-shaped structure, and the high-tension coil surrounds the periphery of the low-tension coil and is concentric with the low-tension coil; the main insulation structure is arranged between the high-tension coil and the low-tension coil, the main insulation structure is a composite insulating layer and comprises a corrugated board layer, an electrician resin pre-impregnated glass plate layer and a diamond grid gumming electrician soft composite film layer, the corrugated board layer, the electrician resin pre-impregnated glass plate layer and the diamond grid gumming electrician soft composite film layer are successively coated on the outer wall of the low-tension coil in a rolling manner, and the electrician resin pre-impregnated glass plate layer is of a grid structure. The main insulation structure disclosed by the utility model has the advantages that the heat dissipation condition of the oil-immersed transformer is remarkably improved, the heat dissipation capacity of the oil-immersed transformer is improved, meanwhile, the volume of the coil is reduced, the size of the oil-immersed transformer is reduced, and the production cost of the oil-immersed transformer is reduced.
Description
Technical field
The utility model relates to a kind of Main Insulation Structure of Electric of oil-filled transformer.
Background technology
Low capacity oil-immersed power transformer (containing Wound iron-core transformer) is because winding volume is little, lightweight, during operation, caloric value is less, often not too focus on its main insulation (being the insulation between high and low pressure coil) structure heat dissipation problem, current way is, after low-voltage coil coiling, follow wrapped one deck corrugated board, insulating board that layer 2-3 1mm is thick, more then coiling high-tension coil, its shortcoming is:
1. corrugated board, insulating board are traditional insulating material, compare with the new insulation material of present exploitation, and its dielectric strength and thermal conductivity are all very low, and dielectric strength is poor, and heat-transfer effect is poor.
2. the gauge of main insulation is very large, and the 10kV level oil-filled transformer of take is example, between high-voltage coil and low-voltage coil between main insulation size minimum 7mm and more than, cause the diameter dimension of high-tension coil larger, consume winding wire rod many, winding wire rod is copper, aluminium noble metal, and material cost is high.
3. because coil dimension is large, the size of iron core, fuel tank is corresponding amplification also, and the overall dimension of transformer is also large, and material consumption is many.
4. high-tension coil is directly on insulating board, and unfavorable its inwall heat radiation, is equivalent to lose a radiating surface, causes the temperature rise of high-tension coil higher, or to meet the requirement of its temperature rise, causes cost to increase by reducing current density or increasing oil duct.
Summary of the invention
The technical problems to be solved in the utility model is: the Main Insulation Structure of Electric that the oil-filled transformer that a kind of heat dispersion is good is provided.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
The utility model has been described a kind of Main Insulation Structure of Electric of oil-filled transformer, the high-tension coil of described oil-filled transformer, low-voltage coil are all tubular structure, high-tension coil is looped around the peripheral also arranged concentric of low-voltage coil, described Main Insulation Structure of Electric is between high-tension coil, low-voltage coil, described Main Insulation Structure of Electric is composite insulation layer, comprise wrapped corrugated paper board layer, electrician's resin prepreg glass plies, water chestnut lattice gluing electrical soft composite film on low-voltage coil outer wall successively, described electrician's resin prepreg glass plies is network.
The multilayer that described water chestnut lattice gluing electrical soft composite film is continuous coiling.
The beneficial effects of the utility model:
1. the electrician's resin prepreg glass plate in the novel Main Insulation Structure of Electric of the utility model is network, the space that the warp of grid and parallel form forms the passage that transformer oil immerses composite insulation layer, the heat that makes high-tension coil inwall passes to transformer oil by the water chestnut lattice gluing electrical soft composite film of less thickness, by transformer oil, heat is taken away again, thereby significantly improve high-tension coil heat dispersion, also can reduce the ambient temperature of low-voltage coil simultaneously, reach the remarkable object of improving transformer heat dispersion, be beneficial to and extend oil-filled transformer useful life;
2. electrician's resin prepreg glass plate and two kinds of new insulation materials of water chestnut lattice gluing electrical soft composite membrane in Main Insulation Structure of Electric of the present utility model, have been adopted, dielectric strength is high, good insulation preformance, in the situation that obtaining equal insulation property, can reduce the thickness of main insulation, thereby dwindle the diameter dimension of high-tension coil, improve intensity, save winding wire rod, and can correspondingly dwindle iron core, the size of fuel tank, reduce the cost of transformer, simultaneously, because the thermal conductivity of electrician's resin prepreg glass plate and water chestnut lattice gluing electrical soft composite membrane is better than insulating board, further improve transformer heat dispersion.
Accompanying drawing explanation
Fig. 1 is the Main Insulation Structure of Electric schematic diagram of oil-filled transformer of the present utility model.
The implication of each code name in figure: 1-low-voltage coil; 2-corrugated paper board layer; 3-electrician's resin prepreg glass plies; 4-water chestnut lattice gluing electrical soft composite film; 5-high-tension coil.
Embodiment
For describing technical characterictic of the present utility model and practical effect in detail, and can realize according to the content of this specification, below in conjunction with accompanying drawing, execution mode of the present utility model is further illustrated.
Referring to Fig. 1, the oil-filled transformer of typical 10kV of now take illustrates the Main Insulation Structure of Electric of oil-filled transformer of the present utility model as example, the high-tension coil 5 of this oil-filled transformer, low-voltage coil 1 is all tubular structure, high-tension coil 5 is looped around the peripheral also arranged concentric of low-voltage coil 1, Main Insulation Structure of Electric of the present utility model is between high-tension coil 5, between low-voltage coil 1, this Main Insulation Structure of Electric is composite insulation layer, this composite insulation layer comprises wrapped corrugated paper board layer 2 on low-voltage coil 1 outer wall successively, the water chestnut lattice gluing electrical soft composite film 4 that is electrician's resin prepreg glass plies 3 and the number floor height dielectric strength of network.The stupefied height of corrugated board is about 4mm conventionally, what in the present embodiment, select is that stupefied height is corrugated board coiling one deck of 4mm, the thickness of resin prepreg glass plies 3 is not more than 1 mm conventionally, what in the present embodiment, select is that thickness is resin prepreg glass plate coiling one deck of 0.6mm, water chestnut lattice gluing electrical soft composite bed 4 thickness of coiling in the present embodiment are no more than 1mm, the dielectric strength that can improve so whole Main Insulation Structure of Electric can guarantee again the capacity of heat transmission of water chestnut lattice gluing electrical soft composite bed 4, by the control to each layer thickness of Main Insulation Structure of Electric of the present utility model, can reduce its gross thickness, therefore the gross thickness that can control Main Insulation Structure of Electric of the present utility model is no more than 6 mm.The object that holds electrician's resin prepreg glass plies 4 at the outer surface of corrugated paper board layer 2 is to form an even curface, be unlikely the grid space in the rear obstruction of the water chestnut lattice gluing electrical soft composite film 4 of wrapped high dielectric strength electrician resin prepreg glass plies 4, the passage that guarantees transformer oil immersion composite insulation layer is unobstructed, also can reduce the thickness of Main Insulation Structure of Electric simultaneously.
The Main Insulation Structure of Electric formula of transformer of the present utility model is to make like this: after low-voltage coil 1 coiling, follow wrapped corrugated paper board layer 2, wrapped electrician's resin prepreg glass grid flaggy 3 again, the continuous water chestnut lattice gluing electrical soft composite film 4 of the wrapped several floor height dielectric strengths of free of discontinuities again, last coiling high-tension coil 5.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, under any, in technical field, have and conventionally know the knowledgeable, if within not departing from the scope of technical characterictic that the utility model is put forward, utilize technology contents that the utility model discloses to do the local equivalent embodiment that changes or modify, all still belong in the scope of the utility model technical characterictic.
Claims (2)
1. the Main Insulation Structure of Electric of an oil-filled transformer, the high-tension coil of described oil-filled transformer (5), low-voltage coil (1) is all tubular structure, high-tension coil (5) is looped around the peripheral also arranged concentric of low-voltage coil (1), described Main Insulation Structure of Electric is between high-tension coil (5), between low-voltage coil (1), it is characterized in that, described Main Insulation Structure of Electric is composite insulation layer, comprise wrapped corrugated paper board layer (2) on low-voltage coil (1) outer wall successively, electrician's resin prepreg glass plies (3), water chestnut lattice gluing electrical soft composite film (4), described electrician's resin prepreg glass plies (3) is network.
2. the Main Insulation Structure of Electric of oil-filled transformer as claimed in claim 1, is characterized in that, the multilayer that described water chestnut lattice gluing electrical soft composite film (4) is continuous coiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320600708.1U CN203456258U (en) | 2013-09-27 | 2013-09-27 | Main insulation structure of oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320600708.1U CN203456258U (en) | 2013-09-27 | 2013-09-27 | Main insulation structure of oil-immersed transformer |
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| Publication Number | Publication Date |
|---|---|
| CN203456258U true CN203456258U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320600708.1U Expired - Fee Related CN203456258U (en) | 2013-09-27 | 2013-09-27 | Main insulation structure of oil-immersed transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389653A (en) * | 2018-05-04 | 2018-08-10 | 无锡市曙光电缆有限公司 | A kind of aluminium core polyvinyl chloride insulation flame-proof power cable |
| CN110993288A (en) * | 2019-12-22 | 2020-04-10 | 河北金水电工科技有限公司 | Gauze mixed winding insulation cylinder and manufacturing process thereof |
| CN112562997A (en) * | 2020-12-04 | 2021-03-26 | 国网河北省电力有限公司沧州供电分公司 | Insulating damping structure and transformer |
-
2013
- 2013-09-27 CN CN201320600708.1U patent/CN203456258U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389653A (en) * | 2018-05-04 | 2018-08-10 | 无锡市曙光电缆有限公司 | A kind of aluminium core polyvinyl chloride insulation flame-proof power cable |
| CN110993288A (en) * | 2019-12-22 | 2020-04-10 | 河北金水电工科技有限公司 | Gauze mixed winding insulation cylinder and manufacturing process thereof |
| CN112562997A (en) * | 2020-12-04 | 2021-03-26 | 国网河北省电力有限公司沧州供电分公司 | Insulating damping structure and transformer |
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| 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: 20140226 Termination date: 20180927 |
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| CF01 | Termination of patent right due to non-payment of annual fee |