CN212726622U - Stator winding insulation structure of offshore wind driven generator - Google Patents
Stator winding insulation structure of offshore wind driven generator Download PDFInfo
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- CN212726622U CN212726622U CN202021051905.9U CN202021051905U CN212726622U CN 212726622 U CN212726622 U CN 212726622U CN 202021051905 U CN202021051905 U CN 202021051905U CN 212726622 U CN212726622 U CN 212726622U
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- tape layer
- polyimide film
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- stator winding
- glass cloth
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Abstract
The utility model discloses an offshore wind driven generator stator winding insulation structure, the stator winding includes lead wire portion, tip part and linear part; the outer layer of the bare wire of the lead part is sequentially provided with a polyimide film self-adhesive tape layer, a polyimide film glass cloth reinforced three-in-one medium rubber powder mica tape layer and a polyester tape layer; the outer layer of the electromagnetic wire at the end part is sequentially provided with a polyimide film glass cloth reinforced three-in-one medium rubber powder mica tape layer, a sodium polytetrafluoroethylene tape layer and a polyester tape layer; the outer layer of the electromagnetic wire of the straight line part is sequentially provided with a polyimide film glass cloth reinforced less rubber powder mica tape layer, a sodium polytetrafluoroethylene tape layer and a terylene tape layer. The utility model discloses can effectively reduce the trouble that the generator causes because of stator winding insulation damage.
Description
Technical Field
The utility model relates to a marine full power rectification contravariant aerogenerator's technical field especially indicates an offshore aerogenerator stator winding insulation system.
Background
With the vigorous development of the offshore wind power industry, the development difficulty of offshore wind turbines is high, the technical requirement is high, and the environmental humidity and salt fog are high, so that the research and development of generators suitable for offshore use environments are urgent. The armature of the generator is used as the heart of the motor in the industry, the stator winding insulation is the heart of the motor, and statistics of years shows that more than 50% of faults of the wind driven generator are caused by insulation damage of the stator winding of the motor, so that the design of the insulation performance of the stator winding of the motor is very important.
The wind driven generator is arranged at a height of hundreds of meters, can be influenced by lightning overvoltage, and can be impacted by high-frequency harmonic waves generated by a converter for a full-power rectification inverter type generator, so that the insulation performance of a stator winding of the wind driven generator has corona resistance. The wind driven generator is also subjected to the actions of mechanical force, electromagnetic force and vibration during operation, so that the insulation of the generator is under the action of alternating stress, the aging of the insulation of the motor is accelerated, and the insulation of a stator winding of the wind driven generator is influenced by the comprehensive action of the factors. The wind driven generator is installed on the sea, the environment of humidity and salt fog is severe, once rainwater, moisture and the like enter the stator winding, the insulation resistance of the stator winding is low, the risk of burning the generator is caused, and the waterproof performance of the stator winding insulation of the generator is very important.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide an offshore wind power generation machine stator winding insulation system, electrical strength and mechanical strength are high, and heat resistance and dampproofing and waterproofing can be good, can effectively reduce the trouble that the generator causes because of stator winding insulation damage.
In order to achieve the above object, the present invention provides a technical solution: an offshore wind turbine stator winding insulation structure, the stator winding comprising a lead portion, an end portion and a straight portion; the outer layer of the bare wire of the lead part is sequentially provided with a polyimide film self-adhesive tape layer, a polyimide film glass cloth reinforced three-in-one medium rubber powder mica tape layer and a polyester tape layer; the outer layer of the electromagnetic wire at the end part is sequentially provided with a polyimide film glass cloth reinforced three-in-one medium rubber powder mica tape layer, a sodium polytetrafluoroethylene tape layer and a polyester tape layer; the outer layer of the electromagnetic wire of the straight line part is sequentially provided with a polyimide film glass cloth reinforced less rubber powder mica tape layer, a sodium polytetrafluoroethylene tape layer and a terylene tape layer.
Furthermore, corona-resistant polyimide film sintering layers and polyimide film mica tape layers are sequentially wrapped between the electromagnetic wires at the end parts and the polyimide film glass cloth reinforced three-in-one medium rubber powder mica tape layers; a corona-resistant polyimide film sintering layer and a polyimide film mica tape layer are sequentially wrapped between the electromagnetic wires on the straight line part and the polyimide film glass cloth reinforced less rubber powder mica tape layer.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
the utility model discloses an insulation system makes stator winding's electrical strength and mechanical strength improve, and heat resistance and dampproofing and waterproofing can be good, can effectively reduce the trouble that the generator causes because of stator winding insulation damage.
Drawings
Fig. 1 is a schematic structural diagram of the stator winding according to the present invention.
Fig. 2 is a cross-sectional view of a lead portion of the present invention.
Fig. 3 is a cross-sectional view of an end portion of the present invention.
Fig. 4 is a cross-sectional view of a straight portion of the present invention.
Fig. 5 is a cross-sectional view of the magnet wire of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
As shown in fig. 1 to 5, the stator winding insulation structure of the offshore wind turbine according to the present embodiment includes a lead portion 1, an end portion 2 and a straight portion 3; the outer layer of the bare wire of the lead part 1 is sequentially provided with a polyimide film self-adhesive tape layer 11, a polyimide film glass cloth reinforced three-in-one medium rubber powder mica tape layer 12 and a terylene tape layer 13; the outer layer of the electromagnetic wire 4 of the end part 2 is sequentially wrapped with a corona-resistant polyimide film sintered layer 41 and a polyimide film mica tape layer 42, and the outer layer of the polyimide film mica tape layer 42 is sequentially provided with a polyimide film glass cloth reinforced three-in-one medium rubber powder mica tape layer 21, a sodium polytetrafluoroethylene tape layer 22 and a terylene tape layer 23; the outer layer of the electromagnetic wire 4 of the straight line part 3 is sequentially wrapped with a corona-resistant polyimide film sintered layer 41 and a polyimide film mica tape layer 42, and the outer layer of the polyimide film mica tape layer 42 is sequentially provided with a polyimide film glass cloth reinforced low-rubber powder mica tape layer 31, a sodium polytetrafluoroethylene tape layer 32 and a terylene tape layer 33.
The stator winding and the stator core notch are treated by a proper sealing technology, and a VPI (vacuum pressure impregnation) process of horizontal immersion and rotary baking is adopted, so that insulating paint in the stator winding groove is well filled without air gaps, a paint film on the surface of a product is continuous and uniform, the whole insulating structure is compact, and the environment resistance is high; the insulation structure has excellent and reliable electrical strength, mechanical strength and heat resistance, is very safe and reliable in salt mist, mould and water resistance, and ensures that the generator can operate healthily and stably on the sea.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (2)
1. An offshore wind turbine stator winding insulation structure, the stator winding comprising a lead portion, an end portion and a straight portion; the method is characterized in that: the outer layer of the bare wire of the lead part is sequentially provided with a polyimide film self-adhesive tape layer, a polyimide film glass cloth reinforced three-in-one medium rubber powder mica tape layer and a polyester tape layer; the outer layer of the electromagnetic wire at the end part is sequentially provided with a polyimide film glass cloth reinforced three-in-one medium rubber powder mica tape layer, a sodium polytetrafluoroethylene tape layer and a polyester tape layer; the outer layer of the electromagnetic wire of the straight line part is sequentially provided with a polyimide film glass cloth reinforced less rubber powder mica tape layer, a sodium polytetrafluoroethylene tape layer and a terylene tape layer.
2. An offshore wind turbine stator winding insulation structure according to claim 1, characterized in that: a corona-resistant polyimide film sintering layer and a polyimide film mica tape layer are sequentially wrapped between the electromagnetic wire at the end part and the polyimide film glass cloth reinforced three-in-one medium rubber powder mica tape layer; a corona-resistant polyimide film sintering layer and a polyimide film mica tape layer are sequentially wrapped between the electromagnetic wires on the straight line part and the polyimide film glass cloth reinforced less rubber powder mica tape layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021051905.9U CN212726622U (en) | 2020-06-10 | 2020-06-10 | Stator winding insulation structure of offshore wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021051905.9U CN212726622U (en) | 2020-06-10 | 2020-06-10 | Stator winding insulation structure of offshore wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212726622U true CN212726622U (en) | 2021-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021051905.9U Active CN212726622U (en) | 2020-06-10 | 2020-06-10 | Stator winding insulation structure of offshore wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212726622U (en) |
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2020
- 2020-06-10 CN CN202021051905.9U patent/CN212726622U/en active Active
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