CN210157009U - Dustproof generator rotor insulation monitoring brush device - Google Patents
Dustproof generator rotor insulation monitoring brush device Download PDFInfo
- Publication number
- CN210157009U CN210157009U CN201921408801.6U CN201921408801U CN210157009U CN 210157009 U CN210157009 U CN 210157009U CN 201921408801 U CN201921408801 U CN 201921408801U CN 210157009 U CN210157009 U CN 210157009U
- Authority
- CN
- China
- Prior art keywords
- brush
- lifting
- cylinder
- generator rotor
- insulation monitoring
- 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.)
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- 238000009413 insulation Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 229910052701 rubidium Inorganic materials 0.000 claims abstract description 13
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- 239000000428 dust Substances 0.000 claims description 11
- 230000001680 brushing effect Effects 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Abstract
A dustproof generator rotor insulation monitoring electric brush device comprises a lifting brush cylinder, wherein a rubidium magnet is arranged in the lifting brush cylinder, an electromagnet comprises an electromagnetic iron core and an electromagnetic coil, when the electromagnetic coil is electrified, the same poles of the magnetic pole of the electromagnet and the rubidium magnet repel each other, the lifting brush cylinder is jacked up, a sealing film on the device is lifted along with the lifting brush cylinder, and a positioning pin arranged on the side face of the device limits the lifting height of the lifting brush cylinder; in the lifting process of the brush lifting cylinder, external air enters the breathing hole through the filter disc and enters a gap between the brush lifting cylinder and the base; after the electromagnetic coil is de-energized, the brush lifting cylinder rapidly falls back under the action of the attraction force of the rubidium magnet and the electromagnetic iron core.
Description
Technical Field
This utility model relates to an electrical control field, concretely relates to dust-protection type generator rotor insulation monitoring brush device.
Background
The existing large-scale generator rotor mostly adopts an injection type grounding protection device, and an independent brush lifting device is adopted to lift a brush regularly to contact with a slip ring shaft, so that the insulation resistance value of a rotor winding is measured. At present, the brush lifting devices which are important components of the protection device are few in types on the market, and the existing carbon brushes are all of open structures and do not have a dustproof function. However, because the industrial field environment is complex, the brushing device is generally installed inside the excitation end of the generator and is in a high-temperature, dusty, electromagnetic and air-cooled circulating environment for a long time, and impurities such as dust, condensed water and the like in circulating cold air easily enter the brushing device, so that the dirt and corrosion in the device are easily caused, the device is finally stuck, the normal operation of the protection device is directly influenced, and even false alarm is caused to cause the generator to trip.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in view of the situations that the existing brush-lifting device is few in types, does not have a dustproof function and is poor in operation reliability, in order to adapt to the environment of industrial site dustiness, high temperature, electromagnetism and air cooling circulation, a sealing filtering type dustproof brush-lifting device is designed, and the device can be ensured to operate reliably in a severe site environment.
The technical scheme of the utility model as follows: a dustproof generator rotor insulation monitoring electric brush device comprises a lifting brush cylinder, wherein a rubidium magnet is arranged in the lifting brush cylinder, an electromagnet comprises an electromagnetic iron core and an electromagnetic coil, when the electromagnetic coil is electrified, the same poles of the magnetic pole of the electromagnet and the rubidium magnet repel each other, the lifting brush cylinder is jacked up, a sealing film on the device is lifted along with the lifting brush cylinder, and a positioning pin arranged on the side face of the device limits the lifting height of the lifting brush cylinder; in the lifting process of the brush lifting cylinder, external air enters the breathing hole through the filter disc and enters a gap between the brush lifting cylinder and the base; after the electromagnetic coil is de-energized, the brush lifting cylinder rapidly falls back under the action of the attraction force of the rubidium magnet and the electromagnetic iron core.
The single-core wire connected to the carbon brush is connected to a contact pin of the aviation plug.
The external measurement loop is communicated with the carbon brush through the aviation plug, and the rotor which is in contact with the carbon brush is connected into the measurement loop after the carbon brush is lifted.
The device is mounted to other components using bolts through bolt holes.
The device is mounted to the bracket using bolts through bolt holes.
The sealing film is adhered to the side surface of the device, the middle of the film is pressed by the carbon brush, and the sealing film is coated on the surface of the device all the time in the whole lifting and brushing process.
The utility model discloses a show the effect and lie in: dustproof test and high temperature resistance test: the brush lifting device is placed in a dust collection cover, the cover is filled with impurities such as dust, flour and the like, and the environment temperature of the electric brush is heated to 80 ℃ by an industrial fan heater. Through 5000 times of brush lifting tests, the device has no jamming phenomenon, no dust and impurities are accumulated inside the device, the running current waveform of the electric brush is good, and the electric performance is stable.
Drawings
FIG. 1 is a side view of a dust protected generator rotor insulation monitoring brush assembly.
Fig. 2 is a front view of a dust-proof generator rotor insulation monitoring brush device.
FIG. 3 is a breathing hole diagram of a dustproof generator rotor insulation monitoring brush device.
Fig. 4 is a top view of a brush lifting device of a dustproof generator rotor insulation monitoring brush device.
In the figure: 1-a machine base 2-an aviation plug 3-an electromagnetic iron core 4-an electromagnetic coil 5-a breathing hole 6-a positioning pin 7-a brush lifting cylinder 8-an insulating sleeve 9-a sealing film 10-a carbon brush 11-a single-core wire 12-a rubidium magnet 13-a filter disc 14-a baffle 15-a bolt hole.
Detailed Description
The utility model provides a dustproof type generator rotor insulation monitoring brush device, is equipped with rubidium magnet 12 including lifting brush section of thick bamboo 7 in lifting brush section of thick bamboo 7, and the electro-magnet includes electromagnetic core 3, solenoid 4, and after solenoid 4 circular telegram, the magnetic pole of electro-magnet and rubidium magnet 12 homopolar repulsion will lift brush section of thick bamboo 7 jack-up, and sealing film 9 above the device promotes along with lifting brush section of thick bamboo 7 together this moment, and the locating pin 6 of installing in the device side is used for restricting to lift brush section of thick bamboo 7 and lifts the height. During the lifting process of the brush lifting cylinder, external air enters the breathing hole 5 through the filter sheet 13 and finally enters a gap between the brush lifting cylinder 7 and the base 1. After the electromagnetic coil 4 is de-energized, the lifting brush cylinder 7 rapidly falls back under the action of the attraction force of the rubidium magnet 12 and the electromagnetic iron core 3, and air filled in a gap between the lifting brush cylinder and the machine base is exhausted through the breathing holes and the filter disc. At this point, the device completes a brush lifting process.
The single core wire 11 connected to the carbon brush 10 is finally connected to a pin of the aviation plug 2, an external measuring circuit is communicated with the carbon brush 10 through the aviation plug 2, and a rotor in contact with the carbon brush 10 can be connected to the measuring circuit after the carbon brush 10 is lifted.
The device can be mounted to other components (such as a bracket) using bolts through bolt holes 15.
The sealing film 9 is adhered to the side face of the device, the middle of the film is pressed by the carbon brush, and the film is coated on the surface of the device all the time in the whole lifting and brushing process, so that external dust and impurities can be prevented from entering the device.
Claims (6)
1. The utility model provides a dustproof type generator rotor insulation monitoring brush device which characterized in that: the device comprises a lifting brush barrel (7), wherein a rubidium magnet (12) is arranged in the lifting brush barrel (7), the electromagnet comprises an electromagnetic iron core (3) and an electromagnetic coil (4), when the electromagnetic coil (4) is electrified, the same poles of the electromagnet and the rubidium magnet (12) repel each other, the lifting brush barrel (7) is jacked, a sealing film (9) on the device is lifted along with the lifting brush barrel (7), and a positioning pin (6) arranged on the side face of the device limits the lifting height of the lifting brush barrel (7); in the lifting process of the brush lifting cylinder, external air enters the breathing hole (5) through the filter disc (13) and enters a gap between the brush lifting cylinder (7) and the base (1); after the electromagnetic coil (4) is de-energized, the brush lifting cylinder (7) rapidly falls back under the action of the attraction force of the rubidium magnet (12) and the electromagnetic iron core (3).
2. The dust protected generator rotor insulation monitoring brush assembly of claim 1, wherein: a single conductor (11) connected to the carbon brush (10) is connected to a pin of the aircraft plug (2).
3. The dust protection type generator rotor insulation monitoring brush device according to claim 2, wherein: an external measuring loop is communicated with the carbon brush (10) through the aviation plug (2), and when the carbon brush (10) is lifted, a rotor in contact with the carbon brush (10) is connected into the measuring loop.
4. The dust protected generator rotor insulation monitoring brush assembly of claim 1, wherein: the device is mounted to other components using bolts through bolt holes (15).
5. The dust protected generator rotor insulation monitoring brush assembly of claim 4, wherein: the device is mounted to the bracket using bolts through bolt holes (15).
6. The dust protected generator rotor insulation monitoring brush assembly of claim 1, wherein: the sealing film (9) is adhered to the side surface of the device, the middle of the film is pressed by the carbon brush (10), and the sealing film is coated on the surface of the device all the time in the whole lifting and brushing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921408801.6U CN210157009U (en) | 2019-08-28 | 2019-08-28 | Dustproof generator rotor insulation monitoring brush device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921408801.6U CN210157009U (en) | 2019-08-28 | 2019-08-28 | Dustproof generator rotor insulation monitoring brush device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210157009U true CN210157009U (en) | 2020-03-17 |
Family
ID=69767170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921408801.6U Active CN210157009U (en) | 2019-08-28 | 2019-08-28 | Dustproof generator rotor insulation monitoring brush device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210157009U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429740A (en) * | 2019-08-28 | 2019-11-08 | 福建福清核电有限公司 | A kind of dust-protection type generator rotor insulation monitoring brushgear |
-
2019
- 2019-08-28 CN CN201921408801.6U patent/CN210157009U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429740A (en) * | 2019-08-28 | 2019-11-08 | 福建福清核电有限公司 | A kind of dust-protection type generator rotor insulation monitoring brushgear |
| CN110429740B (en) * | 2019-08-28 | 2024-04-09 | 福建福清核电有限公司 | Dustproof generator rotor insulation monitoring brush device |
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