CN114301251A - Protection method for magnetic pole box of wind driven generator - Google Patents
Protection method for magnetic pole box of wind driven generator Download PDFInfo
- Publication number
- CN114301251A CN114301251A CN202111447693.5A CN202111447693A CN114301251A CN 114301251 A CN114301251 A CN 114301251A CN 202111447693 A CN202111447693 A CN 202111447693A CN 114301251 A CN114301251 A CN 114301251A
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- Prior art keywords
- magnetic pole
- pole box
- resin
- box
- vacuum
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000003292 glue Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 238000010892 electric spark Methods 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims description 14
- 239000003365 glass fiber Substances 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 239000011241 protective layer Substances 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 6
- 238000007605 air drying Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 229920005992 thermoplastic resin Polymers 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 8
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 238000007598 dipping method Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
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- Wind Motors (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a protection method for a magnetic pole box of a wind driven generator, which comprises the steps of paving a layer of resin on the surface of the magnetic pole box, enabling the resin to reach a certain thickness, and effectively isolating air from entering the magnetic pole box by the resin to form effective sealing protection for the magnetic pole box. The method adopts a vacuum resin glue injection process, utilizes vacuum suction to enable resin to completely cover the surface of the magnetic pole box, uses electric sparks to detect surface air holes after glue injection is completed, uses a hole sealing agent to repair the air holes existing on the surface, realizes 100% sealing protection on the surface of the magnetic pole box, enables magnetic steel to be completely isolated from air for protection, and completes production efficiency improvement work of the generator rotor magnetic pole and protection quality improvement work of the magnetic pole box. The invention has simple operation and greatly improves the production efficiency of the magnetic pole box.
Description
Technical Field
The invention belongs to the field of wind driven generators, and particularly relates to a protection method for a magnetic pole box of a wind driven generator.
Background
At present, a paint dipping process is adopted for a magnetic pole box of a wind driven generator, anti-corrosion paint is used for carrying out rolling dipping and baking treatment on a rotor magnetic pole after the paint dipping of the magnetic pole box is finished, the anti-corrosion paint used for the rolling dipping of the rotor is a hazardous chemical product, meanwhile, the volatilization of the anti-corrosion paint in the baking process causes environmental pollution, a large-scale baking oven used in the baking process causes large kinetic energy loss, and the production cost is increased. The existing rotor magnetic pole has long production period, low efficiency and higher cost.
Disclosure of Invention
In order to solve the problems, the invention discloses a protection method for a magnetic pole box of a wind driven generator, which aims to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a method of shielding a pole box for a wind turbine, comprising the steps of:
(1) laying a resin protective layer on the surface of the magnetic pole box;
(2) using a vacuum system to make the resin protective layer completely cover the surface of the magnetic pole box by using vacuum suction;
(3) removing the vacuum system;
(4) detecting surface pores by using an electric spark detector, and marking the pores on the surface;
(5) and repairing the marked pores by using a sealant.
As a modification of the invention, the resin protective layer in step (1) comprises glass fiber cloth, a flow guide net and resin glue, and the vacuum system in step (2) comprises a vacuum film, a sealing rubber strip and a vacuum pump.
As an improvement of the invention, the glass fiber cloth covers the surface of the magnetic pole box, and the flow guide net covers the surface of the glass fiber cloth.
As an improvement of the invention, resin glue is uniformly sprayed on the surface of the magnetic pole box covered with the glass fiber cloth and the flow guide net by using a glue spraying device, the resin glue is solidified by using an air drying device, and the thickness of the solidified resin glue is in the range of 0.6-1.0 mm.
As an improvement of the invention, the sealing rubber strips are arranged at the upper end part and the lower end part of the rotor bracket of the magnetic pole box of the wind driven generator, vacuum films are bonded, the vacuum films are sealed and fixed on the outer surface of the magnetic pole box, and an air suction port of the vacuum pump is connected with the vacuum films in a sealing way.
As a modification of the invention, the resin adhesive is made of thermoplastic resin.
As a modification of the invention, the sealant used in step (5) is an instant adhesive.
As a refinement of the present invention, the removing operation described in step (3) includes further removing the drainage net.
The invention has the beneficial effects that:
1) the problem of realizing the vacuum degree of rotor glue injection is solved, and the rotor of the permanent magnet wind driven generator is vacuum-sealed by using the method of the invention, so that the surface filling property of the resin glue on the surface of the magnetic pole box is ensured;
2) the method solves the problems of consistency and uniformity of the thickness of the resin adhesive on the surface of the magnetic pole box, and ensures that the resin layer covers the surface of the magnetic pole box in all directions to form a certain protection thickness, thereby ensuring the sealing effect of the surface of the magnetic pole box;
3) the process is simple to operate, various large-scale equipment is not needed, the production period of the rotor magnetic pole is effectively shortened, the product quality and the production efficiency are improved, the production cost is reduced, the totally-enclosed treatment of the magnetic steel is realized, and the service life of the magnetic pole of the generator is effectively prolonged.
Drawings
FIG. 1 is a front view of a pole box for a wind turbine;
fig. 2 is a top view of a pole box for a wind turbine.
List of reference symbols:
1. a magnetic pole box; 2. glass fiber cloth; 3. a flow guide net; 4. a vacuum film; 5. sealing rubber strips; 6. a vacuum pump; 7. a glue spraying device; 8. and (5) air-drying the device.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
As shown in fig. 1-2, the invention designs a protection method for a magnetic pole box of a wind driven generator, which comprises the steps of firstly, uniformly laying a layer of glass fiber cloth 2 on the outer surface of the magnetic pole box 1, enabling the glass fiber cloth 2 to completely cover the surface of the magnetic pole box 1, then laying a layer of flow guide net 3 outside the glass fiber cloth 2, and enabling the flow guide net 3 to completely cover the glass fiber cloth 2. And then, covering the whole outer surface of the magnetic pole box 1 with a vacuum film 4 by adopting a vacuum resin injection process. A layer of sealing rubber strip 5 is respectively laid on the upper end part and the lower end part of a rotor support of the magnetic pole box 1, the surface of the magnetic pole box 1 is protected by using the vacuum film 4, and the upper end and the lower end of the vacuum film 4 are bonded on the sealing rubber strip 5, so that the inner space of the whole vacuum film 4 is in a vacuum state, and space sealing is realized. The surface of the magnetic pole box 1 is subjected to vacuum glue injection by using the glue spraying device 7, a layer of resin is uniformly laid outside the flow guide net 3, the resin reaches a certain thickness, the resin glue flows and fills at a constant speed on the surface of the magnetic pole box 1, a resin protective layer with a certain thickness is formed on the surface of the magnetic pole box 1, and then the resin is solidified by using the air drying device 8. After the resin is solidified, the volume is reduced, and the flow guide net 3 floats outside the resin layer. In embodiments of the invention, the resin thickness is preferably 0.6-1.0 mm, most preferably 0.8 mm, after solidification. In the embodiment of the present invention, the resin is preferably a thermoplastic resin. The thermoplastic resin can effectively isolate air from entering the magnetic pole box 1, and forms extremely high-efficiency sealing protection for the magnetic pole box 1. Then, the inside of the vacuum film 4 is vacuumized by using the vacuum suction force of the vacuum pump 6, so that the vacuum film 4 is completely covered outside the resin protective layer, and pressure is generated on the resin layer to enable the resin to be more attached to the glass fiber cloth 2 and completely cover the surface of the magnetic pole box 1. And finally, after the glue injection is finished, removing the vacuum pump 6, taking down the vacuum film 4 and the flow guide net 3, detecting the air holes on the surface of the resin layer by using an electric spark detector, repairing the air holes on the surface by using a sealing agent, realizing 100% sealing protection on the surface of the magnetic pole box 1, completely isolating the magnetic steel from air for protection, and finishing the production efficiency improvement work of the magnetic pole of the generator rotor and the protection quality improvement work of the magnetic pole box 1. The hole sealing agent adopts instant adhesive, and after hole sealing, the surface is leveled by using sand paper or a shovel. The invention has simple operation, does not need to adopt various large-scale equipment and does not need to contact toxic substances by workers, is safe and environment-friendly, and can greatly improve the production efficiency of the magnetic pole box 1 while reducing energy loss.
After the protection tool is implemented, the protection process tool for the rotor of the megawatt wind driven generator can be reliably, efficiently and safely implemented, the equipment investment is reduced, the kinetic energy consumption is reduced, the magnetic steel protection quality of a magnetic pole box is effectively improved, and the magnetic pole service life of the rotor of the generator is prolonged.
It should be noted that the above-mentioned contents only illustrate the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and it is obvious to those skilled in the art that several modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations fall within the protection scope of the claims of the present invention.
Claims (8)
1. A protection method for a magnetic pole box of a wind driven generator is characterized by comprising the following steps: comprises the following steps:
(1) laying a resin protective layer on the surface of the magnetic pole box (1);
(2) using a vacuum system to make the resin protective layer completely cover the surface of the magnetic pole box (1) by using vacuum suction;
(3) removing the vacuum system;
(4) detecting surface pores by using an electric spark detector, and marking the pores on the surface;
(5) and repairing the marked pores by using a sealant.
2. The shielding method for a pole box of a wind turbine according to claim 1, characterized in that: the resin protective layer in the step (1) comprises glass fiber cloth (2), a flow guide net (3) and resin glue, and the vacuum system in the step (2) comprises a vacuum film (4), a sealing rubber strip (5) and a vacuum pump (6).
3. The shielding method for a pole box of a wind turbine according to claim 2, characterized in that: the glass fiber cloth (2) covers the surface of the magnetic pole box (1), and the flow guide net (3) covers the surface of the glass fiber cloth (2).
4. A protection method for a pole box of a wind generator according to claim 3, characterized in that: the resin adhesive is uniformly sprayed on the surface of the magnetic pole box (1) covered with the glass fiber cloth (2) and the flow guide net (3) by using an adhesive spraying device (7), the resin adhesive is solidified by using an air drying device (8), and the thickness of the solidified resin adhesive is in the range of 0.6-1.0 mm.
5. The shielding method for a pole box of a wind turbine according to claim 2, characterized in that: the sealing rubber strips (5) are arranged at the upper end part and the lower end part of the rotor support of the magnetic pole box (1) of the wind driven generator and are adhered with the vacuum film (4), the vacuum film (4) is sealed and fixed on the outer surface of the magnetic pole box (1), and the air suction port of the vacuum pump (6) is hermetically connected with the vacuum film (4).
6. The shielding method for a pole box of a wind turbine according to claim 4, characterized in that: the resin adhesive is thermoplastic resin.
7. The shielding method for a pole box of a wind turbine according to claim 1, characterized in that: the hole sealing agent used in the step (5) is instant adhesive.
8. The shielding method for a pole box of a wind turbine according to claim 1, characterized in that: the removal operation described in step (3) may be followed by further removal of the drainage network (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111447693.5A CN114301251A (en) | 2021-11-30 | 2021-11-30 | Protection method for magnetic pole box of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111447693.5A CN114301251A (en) | 2021-11-30 | 2021-11-30 | Protection method for magnetic pole box of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114301251A true CN114301251A (en) | 2022-04-08 |
Family
ID=80964990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111447693.5A Pending CN114301251A (en) | 2021-11-30 | 2021-11-30 | Protection method for magnetic pole box of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114301251A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4160926A (en) * | 1975-06-20 | 1979-07-10 | The Epoxylite Corporation | Materials and impregnating compositions for insulating electric machines |
| JP2014132802A (en) * | 2012-03-01 | 2014-07-17 | Sumitomo Bakelite Co Ltd | Resin composition for fixation, rotor, and automobile |
| CN206283347U (en) * | 2016-12-30 | 2017-06-27 | 北京金风科创风电设备有限公司 | Rotor magnetic pole sealed protective structure and wind-driven generator |
| CN107070033A (en) * | 2017-05-08 | 2017-08-18 | 北京金风科创风电设备有限公司 | Magnetic pole module, rotor and manufacturing method thereof |
| CN109968694A (en) * | 2019-01-15 | 2019-07-05 | 北京金风科创风电设备有限公司 | Vacuum-assisted resin infusion method for motor rotors |
-
2021
- 2021-11-30 CN CN202111447693.5A patent/CN114301251A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4160926A (en) * | 1975-06-20 | 1979-07-10 | The Epoxylite Corporation | Materials and impregnating compositions for insulating electric machines |
| JP2014132802A (en) * | 2012-03-01 | 2014-07-17 | Sumitomo Bakelite Co Ltd | Resin composition for fixation, rotor, and automobile |
| CN206283347U (en) * | 2016-12-30 | 2017-06-27 | 北京金风科创风电设备有限公司 | Rotor magnetic pole sealed protective structure and wind-driven generator |
| CN107070033A (en) * | 2017-05-08 | 2017-08-18 | 北京金风科创风电设备有限公司 | Magnetic pole module, rotor and manufacturing method thereof |
| CN109968694A (en) * | 2019-01-15 | 2019-07-05 | 北京金风科创风电设备有限公司 | Vacuum-assisted resin infusion method for motor rotors |
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Application publication date: 20220408 |
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