CN201174308Y - Transformer having epoxy resin layer casted under normal temperature and pressure - Google Patents
Transformer having epoxy resin layer casted under normal temperature and pressure Download PDFInfo
- Publication number
- CN201174308Y CN201174308Y CNU2007200746154U CN200720074615U CN201174308Y CN 201174308 Y CN201174308 Y CN 201174308Y CN U2007200746154 U CNU2007200746154 U CN U2007200746154U CN 200720074615 U CN200720074615 U CN 200720074615U CN 201174308 Y CN201174308 Y CN 201174308Y
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- transformer
- resin layer
- epoxy resin
- normal temperature
- pressure
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to the transformer field, in particular to a welding transformer with an epoxide resin layer cast at a normal temperature and pressure, comprising a coil assembly of a common transformer. The transformer with the epoxide resin layer at a normal temperature and pressure is characterized in that the outer part of the coil assembly is cast with the epoxide resin layer consisting of epoxide resin and a firming agent. With the technical proposal, the shortcomings of the epoxide cast of the prior transformer are completely overcome. The transformer adopts the epoxide resin layer cast at a normal temperature and pressure, saves electricity, protects the environment, improves the performance of the transformer, prolongs the service life of the transformer and improves the production efficiency.
Description
Technical field
The utility model relates to field transformer, the welding transformer of casting epoxy resin layer under particularly a kind of tool normal temperature and pressure.
Background technology
Hermetically sealed or the hermetically sealed insulation system of coil of transformer adopting epoxy resin is abroad with domestic very general.Because epoxy resin is by the modification of additive, filler etc., machinery, electric property are superior, and its positive role has been familiar with gradually by technical staff, thereby its range of application constantly enlarges.For transformer, the kind difference of low-voltage, high voltage, big current low voltage, service condition is different, and it is also different to some performance requirement of epoxy resin cured product.Welding transformer, its feature are through output voltage low (about 10 volts) after the transformation, output current big (1000 amperes-100 kilo-amperes).Because output current is very big, secondaryly will produce very high heat, so the secondary of welding transformer is by hollow copper tubing, takes away secondary heat by recirculated water, also will take away elementary heat simultaneously.Therefore elementary secondary requirement is fitted tight more well more.But,, under the effect of powerful electromagnetic force, will produce displacement between primary and secondary because secondary output current is big.Therefore, quality better, welding transformer that volume is relatively little all are with epoxy resin coil groups to be carried out integrated pouredly avoiding producing displacement between primary and secondary under the effect of powerful electromagnetic force with the purpose that reaches insulation.But traditional epoxy resin is mobile poor, therefore can produce air and bubble when cast.The online circle group of these air and bubble can produce explosion when producing the rising of heat temperature and make the explosion of epoxy resins insulation layer, and welding transformer is damaged.For this reason, traditional epoxy resin must be poured into a mould under vacuum state.Transformer after the cast also will carry out 24 hours baking-curing in electric dry oven simultaneously, and therefore, the process of epoxy casting is very complicated.
Summary of the invention
The purpose of this utility model is to overcome the defective of above-mentioned traditional transformer epoxy casting, and the transformer of casting epoxy resin layer under a kind of tool normal temperature and pressure is provided.
Realize that the object of the invention technical scheme is: the transformer of casting epoxy resin layer under a kind of tool normal temperature and pressure comprises it is characterized in that the coil groups of common transformer that its coil groups is outer to cover an epoxy resin layer of being made up of epoxy resin and curing agent.
Preferably, the transformer of casting epoxy resin layer under the above-mentioned tool normal temperature and pressure, described epoxy resin layer overall appearance is the cuboid shape, this cuboid size immerses in the epoxy body fully than transformer summary ambassador coil exceeds.
Owing to adopted above-mentioned technical solution, solved the defective of traditional transformer epoxy casting fully.The transformer adopting normal temperature and pressure of the present utility model epoxy resin layer of cast down has following beneficial effect:
1, economize on electricity: adopts transformer of common epoxy casting to need power consumption 20 degree approximately, for the factory that produces 2000 transformers per year, this just could economize on electricity and 40000 spend a time!
2, environmental protection: since epoxy resin of the present utility model in casting process without baking oven, in casting process, do not have the volatilization of a large amount of toxic and harmfuls.
3, improved transformer performance: electrical property, mechanical resistance pinking and the useful life etc. of adopting the transformer of casting epoxy resin layer under the normal temperature and pressure state are all above traditional transformer.
4, prolonged transformer's life span: because the epoxy resin body of transformer of the present utility model does not have bubble, stable performance when hot, good toughness can explosions, prolonged transformer's life span significantly.
5, improved production efficiency: because epoxy resin layer of the present utility model cast easily, do not need under vacuum, to operate, also need not toast, greatly simplified operation, thereby improved production efficiency highly.
Description of drawings
Fig. 1 is the schematic diagram of the transformer of casting epoxy resin layer under the utility model tool normal temperature and pressure.
Embodiment
The utility model is described in further detail below in conjunction with drawings and embodiments:
The transformer of casting epoxy resin layer under a kind of tool normal temperature and pressure, the coil groups that comprises common transformer, its coil groups are cast for the epoxy resin S7157-03SHMEDAR of German EPIC RESINC company and the epoxy resin layer that curing agent S7157-01 SHMEDAR forms outward.
The transformer of casting epoxy resin body under the above-mentioned tool normal temperature and pressure, described epoxy resin layer overall appearance is the cuboid shape, this cuboid size immerses in the epoxy body fully than transformer summary ambassador coil exceeds.
With reference to figure 1,2 is the coil groups of transformer among the figure, and 1 is the epoxy resin layer of epoxy casting.Epoxy resin layer of the present utility model can penetrate in the slit of coil equably, does not produce bubble, just can pour into a mould at normal temperatures and pressures.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (2)
1, the transformer of casting epoxy resin layer under a kind of tool normal temperature and pressure comprises it is characterized in that the coil groups of common transformer, and its coil groups is outer to cover an epoxy resin layer of being made up of epoxy resin and curing agent.
2, the transformer of casting epoxy resin layer under the tool normal temperature and pressure according to claim 1 is characterized in that described epoxy resin layer overall appearance is the cuboid shape, and this cuboid size immerses in the epoxy body fully than transformer summary ambassador coil exceeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200746154U CN201174308Y (en) | 2007-09-13 | 2007-09-13 | Transformer having epoxy resin layer casted under normal temperature and pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200746154U CN201174308Y (en) | 2007-09-13 | 2007-09-13 | Transformer having epoxy resin layer casted under normal temperature and pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201174308Y true CN201174308Y (en) | 2008-12-31 |
Family
ID=40201432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200746154U Expired - Lifetime CN201174308Y (en) | 2007-09-13 | 2007-09-13 | Transformer having epoxy resin layer casted under normal temperature and pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201174308Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104714130A (en) * | 2015-03-12 | 2015-06-17 | 广州供电局有限公司 | Dry type transformer epoxy resin thermo-oxidative aging test model and manufacturing method and application thereof |
| CN113113790A (en) * | 2021-04-08 | 2021-07-13 | 广东电网有限责任公司 | Male plug and heavy-load connector comprising same for oil-immersed transformer |
-
2007
- 2007-09-13 CN CNU2007200746154U patent/CN201174308Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104714130A (en) * | 2015-03-12 | 2015-06-17 | 广州供电局有限公司 | Dry type transformer epoxy resin thermo-oxidative aging test model and manufacturing method and application thereof |
| CN113113790A (en) * | 2021-04-08 | 2021-07-13 | 广东电网有限责任公司 | Male plug and heavy-load connector comprising same for oil-immersed transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081231 |