CN203377706U - Moisture-proof structure of stator coil end portion - Google Patents
Moisture-proof structure of stator coil end portion Download PDFInfo
- Publication number
- CN203377706U CN203377706U CN201320476063.5U CN201320476063U CN203377706U CN 203377706 U CN203377706 U CN 203377706U CN 201320476063 U CN201320476063 U CN 201320476063U CN 203377706 U CN203377706 U CN 203377706U
- Authority
- CN
- China
- Prior art keywords
- stator coil
- end portion
- coil end
- moisture
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims abstract description 8
- 239000010445 mica Substances 0.000 claims abstract description 6
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 6
- 229920006335 epoxy glue Polymers 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 abstract description 6
- 239000003292 glue Substances 0.000 abstract description 6
- 229920000647 polyepoxide Polymers 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model relates to a moisture-proof structure of a stator coil end portion. The structure comprises a stator coil. The stator coil possesses a linear portion and an end portion. An epoxy resin glue layer is coated on a mica insulation banding layer of the stator coil end portion. An alkali-free glass fiber banding layer is used to bind the epoxy resin glue layer. The structure of the utility model uses an epoxy resin glue as a main material. Therefore, the structure possesses characteristics that heat resistance, high insulativity and corrosion resistance are possessed; moisture absorption is less and so on. An alkali-free glass fiber ribbon is used to bind an outer surface of the stator coil end portion so as to increase fireproof performance and tensile resistance strength of the coil.
Description
Technical field
The utility model relates to a kind of stator coil end moisture-proof construction of hydraulic generator.
Background technology
The stator coil of hydraulic generator, adopt 180 ℃～200 ℃ semi-solid preparation techniques to make usually.So-called semi-solid preparation, the straight line portion only referred to coil carries out hot molded curing, end is without mould pressing process, also without the curing temperature of 180 ℃～200 ℃, just after rolling off the production line and connecing operation and complete, with the integrally curing of 155 ℃ of whole stator experience, therefore, the epoxy glue overflow state of cure of the overhang insulation layer of stator coil is incomplete, causes overhang insulation layer density not high, moisture-sensitive.If stator coil end is also carried out to the hot press method the same with straight line portion simultaneously, required hot pressing die is very complicated, from the economy aspect, considers, may without practicality.
Summary of the invention
The utility model, in order to address the above problem, provides a kind of insulation property, the fire protecting performance that improves coil and stator coil end moisture-proof construction of Tensile strength of improving.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: the utility model comprises stator coil, and the mica insulation band layer of the end of described stator coil is provided with one deck epoxy glue layer outward.Epoxy glue layer can complete by brushing.
As preferably, described epoxy glue layer has dressed outside alkali-free glass fibre band layer.
The beneficial effects of the utility model are: the main material that the utility model is used is epoxide-resin glue, thereby has the characteristics such as thermal endurance, high-insulativity, corrosion resistance and moisture absorption are few.The stator coil end appearance is wrapped up with the alkali-free glass fibre silk ribbon again, improves fire protecting performance and the Tensile strength of coil.
The accompanying drawing explanation
Fig. 1 is a kind of structural representation of traditional stator coil end.
Fig. 2 is a kind of structural representation after stator coil end brushwork epoxy resin glue in the utility model.
Fig. 3 is a kind of structural representation of wrapping up again after stator coil end brushwork epoxy resin glue in the utility model after the alkali-free glass fibre band.
Fig. 4 is a kind of cross section structure schematic diagram of stator coil end in the utility model.
1. straight line portioies in figure, 2. mica insulation band layer, 3. epoxy glue layer, 4. alkali-free glass fibre band layer, 5. wire.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the stator coil end moisture-proof construction of the present embodiment, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, comprise stator coil, stator coil has straight line portion 1 and end, the stator coil end innermost layer is wire 5, and wire has dressed outside mica insulation band layer 2, and the 2 outer painting of mica insulation band layer are brushed with epoxy glue layer 3, be covered in the whole appearance of end winding, epoxy glue layer is wrapped up alkali-free glass fibre band layer 4 is arranged again outward.
The insulation property that end has the integral insulation performance of stator coil of moisture-proof construction and a traditional stator coil relatively, the quantizating index improved is as follows: stator coil end is placed in to humidity and reaches 80%～85% medium (generally adopting the towel parcel end of corresponding humidity), insulating resistance value is enhanced about more than once, and is not less than 2500M Ω; DC break down voltage leakage current values under three times of rated voltages is less than 30%, not higher than 10 μ A.
Claims (2)
1. a stator coil end moisture-proof construction, comprise stator coil, it is characterized in that the mica insulation band layer of the end of described stator coil is provided with one deck epoxy glue layer outward.
2. stator coil end moisture-proof construction according to claim 1, is characterized in that described epoxy glue layer has dressed outside alkali-free glass fibre band layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320476063.5U CN203377706U (en) | 2013-08-06 | 2013-08-06 | Moisture-proof structure of stator coil end portion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320476063.5U CN203377706U (en) | 2013-08-06 | 2013-08-06 | Moisture-proof structure of stator coil end portion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203377706U true CN203377706U (en) | 2014-01-01 |
Family
ID=49840211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320476063.5U Expired - Lifetime CN203377706U (en) | 2013-08-06 | 2013-08-06 | Moisture-proof structure of stator coil end portion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203377706U (en) |
-
2013
- 2013-08-06 CN CN201320476063.5U patent/CN203377706U/en not_active Expired - Lifetime
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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 |
Granted publication date: 20140101 |
|
| CX01 | Expiry of patent term |