CN201594454U - Epoxy resin casting exicitation/rectification dry type transformer - Google Patents
Epoxy resin casting exicitation/rectification dry type transformer Download PDFInfo
- Publication number
- CN201594454U CN201594454U CN2010203026871U CN201020302687U CN201594454U CN 201594454 U CN201594454 U CN 201594454U CN 2010203026871 U CN2010203026871 U CN 2010203026871U CN 201020302687 U CN201020302687 U CN 201020302687U CN 201594454 U CN201594454 U CN 201594454U
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- side winding
- winding
- epoxy resin
- type transformer
- valve
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Abstract
The utility model discloses an epoxy resin casting exicitation/rectification dry type transformer which relates to a transformer. In the prior art, the direct-current motor exicitation/rectification transformer can not take cost, safety and using performance all into account. The epoxy resin casting exicitation/rectification dry type transformer comprises a line winding and a valve winding which are concentric, wherein the line winding is positioned on the periphery of the valve winding; and the dry type transformer is characterized in that a grounding screen is arranged between the line winding and the valve winding and used for preventing electromagnetic interference; and the line winding and the valve winding both have an integral structure formed by casting of composite insulating material. The grounding screen is additionally arranged between the line winding and the valve winding, thus preventing electromagnetic interference and improving the performance of the transformer; the line winding and the valve winding both have an integral structure formed by casting of composite insulating material, thus leading to excellent moisture-proof property, and high corrosion resistance and short circuit resistance, and less mechanical stress, avoiding cracking, leading to good insulating property and high radiation efficiency, and taking cost, safety and using performance into account simultaneously.
Description
[technical field]
The utility model relates to a kind of transformer, outstanding finger ring epoxy resins cast excitation commutation dry-type transformer.
[background technology]
At present, multi-form motor adopts different excitation modes, exciting current must be a galvanic current, the harmonic wave stable, output voltage waveforms that could guarantee torque is little, along with great development metallurgical, mining industry, the excitation system of on-line operation also develops rapidly, and field power supply is powered to generator end by transformer and rectifier.
Excitation of direct current generator rectifier transformer of the prior art adopts oil-filled transformer mostly, when using oil-filled transformer, needs the oil hole to wait auxiliary building, and civil engineering cost height just in case seepage takes place, pollutes environment, and might cause fire; Maintenance in service and maintenance workload are big.Dry-type transformer has solved the problems referred to above, but brings another trouble thereupon, and the valve side winding of transformer is connected to rectifier cell, and the high order harmonic component of rectifier cell can be easy to generate electromagnetic interference by valve side winding to space radiation, influences the serviceability of transformer.
[utility model content]
The technical assignment of the technical problems to be solved in the utility model and proposition is that the prior art scheme is improved and improved, and provides a kind of poured with epoxy resin excitation commutation dry-type transformer, to reach the purpose of taking into account cost, performance.For this reason, the utility model is taked following technical scheme:
Poured with epoxy resin excitation commutation dry-type transformer, comprise concentric net side winding and valve side winding, described net side winding is positioned at the periphery of valve side winding, it is characterized in that: be provided with the ground connection screen that is used to prevent electromagnetic interference between described net side winding and the valve side winding, described net side winding and valve side winding pour into overall structure by composite insulating material.Exist bigger coupling capacitance between net side winding and valve side winding and valve side winding and the iron core.Poured with epoxy resin excitation rectifier transformer valve side has rectifier cell, the high order harmonic component of rectifier cell can be by valve side winding to space radiation, be easy to generate electromagnetic interference, adopt the ground connection screen can effectively suppress electromagnetic interference, higher harmonic components can improve the serviceability of transformer by the coupling capacitance between ground connection screen and the valve side winding directly into ground.Net side winding and valve side winding are in aggregates by the composite material cast, and moistureproof anti-corruption and anti-short circuit capability are strong.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature:
Described ground connection screen is tubular, and it is rolled by Copper Foil and forms.Easy to process, Copper Foil is rolled into tubular ground connection screen around the valve lateral coil and gets final product.
Described valve side winding is by the Copper Foil coiling.The Copper Foil periphery can be covered insulating coating, and insulating coating can be polyimide coating.
Described composite material comprises glass fibre and epoxy resin.The composite insulating material that resin and glass fibre solidify to form, the coefficient of expansion of used copper is approaching substantially in thermal coefficient of expansion and the winding, has eliminated the winding conductor that expands with heat and contract with cold and produce and the mechanical stress between the insulating material, has stopped crack performance.And this composite material has high electrical strength, and thickness of insulating layer is 1.5mm only, has improved the radiating efficiency on winding surface.
Be provided with insulating barrier between described ground connection screen and net side winding and the valve side winding.Insulating barrier can be the epoxy resins insulation tube.
Beneficial effect: increase the ground connection screen between valve side winding and net side winding, the ground connection screen adopts Copper Foil as shielding material, prevents electromagnetic interference, improves transformer performance.Net side winding and valve side winding are in aggregates by the composite insulating material cast, moistureproof anti-corruption and anti-short circuit capability are strong, the composite insulating material that resin and glass fibre solidify to form, the coefficient of expansion of used copper is approaching substantially in thermal coefficient of expansion and the winding, eliminate the winding conductor that expands with heat and contract with cold and produce and the mechanical stress between the insulating material, stopped crack performance, and this composite insulating material has had high electrical strength, thickness is 1.5mm only, has improved the radiating efficiency on winding surface.
[description of drawings]
Fig. 1 is the utility model master TV structure schematic diagram.
Fig. 2 is the utility model left side TV structure schematic diagram.
Fig. 3 is the utility model valve side winding construction schematic diagram.
[embodiment]
Below in conjunction with Figure of description the technical solution of the utility model is described in further detail.
As Figure 1-3, the utility model comprises concentric net side winding 1 and the valve side winding 2 that is positioned at iron core 3 peripheries, and net side winding 1 is positioned at the periphery of valve side winding 2.Be provided with the ground connection screen 4 that is used to prevent electromagnetic interference between net side winding 1 and the valve side winding 2, the composite insulating material that net side winding 1 and valve side winding 2 fibreglass and epoxy resin are formed pours into overall structure; Ground connection screen 4 is tubular, and it is rolled by Copper Foil and forms.Be provided with insulating barrier 5 between ground connection screen 4 and net side winding 1 and the valve side winding 2.
Add man-hour, net side winding 1 and valve side winding 2 are poured into a mould with pure resin under vacuum state, do not add any filler, have kept the resin flow performance.After the winding drying was solidified, the solid insulation that adopts resin and glass fibre to form had improved shock-resistant ability.The composite insulating material that resin and glass fibre solidify to form, the coefficient of expansion of used copper is approaching substantially in thermal coefficient of expansion and the winding, has eliminated the winding conductor that expands with heat and contract with cold and produce and the mechanical stress between the insulating material, has stopped crack performance.The composite insulating material that pure resin and glass fibre constitute has high electrical strength, and the composite insulating material layer thickness is 1.5mm only, has improved the radiating efficiency on winding surface.Iron core 3 adopts two components resin to apply.Before establishing ground connection screen 4, need at valve side winding 2 outermost layers around 4 layers of DMD composite membrane as insulating barrier 5, and then wrap up in ground connection screen 4, ground connection screen 4 adopts Copper Foils as shielding material, and draws ground connection with conductor wire, ground connection screen 4 outer one deck DMD, then the half lap shrink belts wrapped up in.
Poured with epoxy resin excitation commutation dry-type transformer shown in above Fig. 1-3 is a specific embodiment of the utility model; the utility model substantive distinguishing features and progress have been embodied; can be according to the use needs of reality; under enlightenment of the present utility model; it is carried out the equivalent modifications of aspects such as shape, structure, all at the row of the protection range of this programme.
Claims (5)
1. poured with epoxy resin excitation commutation dry-type transformer, comprise concentric net side winding (1) and valve side winding (2), described net side winding (1) is positioned at the periphery of valve side winding (2), it is characterized in that: be provided with the ground connection screen (4) that is used to prevent electromagnetic interference between described net side winding (1) and the valve side winding (2), described net side winding (1) and valve side winding (2) pour into overall structure by composite insulating material.
2. poured with epoxy resin excitation commutation dry-type transformer according to claim 1 is characterized in that: described ground connection screen (4) is tubular, is rolled by Copper Foil to form.
3. poured with epoxy resin excitation commutation dry-type transformer according to claim 1 is characterized in that: described valve side winding (2) is formed by the Copper Foil coiling.
4. poured with epoxy resin excitation commutation dry-type transformer according to claim 1, it is characterized in that: described composite insulating material comprises glass fibre and epoxy resin.
5. according to the described poured with epoxy resin excitation of the arbitrary claim of claim 1-4 commutation dry-type transformer, it is characterized in that: be provided with insulating barrier (5) between described ground connection screen (4) and net side winding (1) and the valve side winding (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203026871U CN201594454U (en) | 2010-02-09 | 2010-02-09 | Epoxy resin casting exicitation/rectification dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203026871U CN201594454U (en) | 2010-02-09 | 2010-02-09 | Epoxy resin casting exicitation/rectification dry type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201594454U true CN201594454U (en) | 2010-09-29 |
Family
ID=42776523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010203026871U Expired - Fee Related CN201594454U (en) | 2010-02-09 | 2010-02-09 | Epoxy resin casting exicitation/rectification dry type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201594454U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946048A (en) * | 2017-12-31 | 2018-04-20 | 江苏天奇新能源集成有限公司 | 110kV resin casting dry-type transformers |
| CN109585142A (en) * | 2018-10-29 | 2019-04-05 | 南瑞集团有限公司 | A kind of shielding and preparation method thereof suitable for poured with epoxy resin winding |
-
2010
- 2010-02-09 CN CN2010203026871U patent/CN201594454U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946048A (en) * | 2017-12-31 | 2018-04-20 | 江苏天奇新能源集成有限公司 | 110kV resin casting dry-type transformers |
| CN109585142A (en) * | 2018-10-29 | 2019-04-05 | 南瑞集团有限公司 | A kind of shielding and preparation method thereof suitable for poured with epoxy resin winding |
| CN109585142B (en) * | 2018-10-29 | 2020-05-19 | 南瑞集团有限公司 | Shielding suitable for epoxy resin cast winding and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312300 No. 1801 Renmin West Road, Zhejiang, Shangyu Co-patentee after: Wolong Electric Group Beijing Huatai Transformer Co., Ltd. Patentee after: Wolong Electric Group Co., Ltd. Address before: 312300 No. 1801 Renmin West Road, Zhejiang, Shangyu Co-patentee before: Wolong Electric (Group) Co., Ltd. Patentee before: Wolong Electric Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20130209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |