CN115549404A - Hydraulic generator stator and rotor camera shooting inspection device and hydraulic generator maintenance method - Google Patents
Hydraulic generator stator and rotor camera shooting inspection device and hydraulic generator maintenance method Download PDFInfo
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- CN115549404A CN115549404A CN202211166979.0A CN202211166979A CN115549404A CN 115549404 A CN115549404 A CN 115549404A CN 202211166979 A CN202211166979 A CN 202211166979A CN 115549404 A CN115549404 A CN 115549404A
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- 238000007689 inspection Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012423 maintenance Methods 0.000 title abstract description 10
- 230000000712 assembly Effects 0.000 claims abstract description 15
- 238000000429 assembly Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 8
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- 230000005284 excitation Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0006—Disassembling, repairing or modifying dynamo-electric machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention discloses a camera inspection device for a stator and a rotor of a hydraulic generator and a maintenance method for the hydraulic generator, wherein the device comprises an annular track and a circumferential moving device, transmission teeth are constructed on the outer peripheral surface of the annular track, the circumferential moving device comprises a supporting seat, four groups of roller assemblies are fixedly connected to the bottom of the supporting seat, and the four groups of roller assemblies and the annular track form stable rolling connection; the supporting seat is fixedly provided with a first servo motor, a driving gear and a transmission gear which are arranged on a rotating shaft of the first servo motor are meshed, the supporting seat is further fixedly provided with a second servo motor, a rotating shaft of the second servo motor is connected with a winch and a take-up reel, the supporting seat is further connected with two supporting arms, the supporting arms are hinged with a vertical track assembly, and the vertical track assembly is slidably connected with a camera shooting inspection device. The device provided by the invention realizes the movement and control in the circumferential direction and the vertical direction, and realizes the purpose of inspecting the stator, the rotor and related accessory equipment of the large-scale hydraulic generator under the condition that the rotor is not lifted out.
Description
Technical Field
The invention belongs to the technical field of hydraulic turbine maintenance, and particularly relates to a hydraulic generator stator and rotor camera shooting inspection device and a hydraulic generator maintenance method.
Background
The hydro-generator is used as the heart of the hydroelectric power station, so that the quality of output electric energy and the safe operation of the power station are related, and the regular maintenance and repair work is required. The inspection of generator stator rotor need be hung out the rotor from the stator bore at traditional maintenance in-process, and there is very big potential safety hazard in the hoist and mount process to the inspection process needs to consume a large amount of manpower and materials, and the check cycle is long, and the inspection efficiency is low, and the inspection quality also receives operation personnel's professional skill level restriction, can't obtain the abundant guarantee.
According to the traditional large hydraulic generator inner chamber inspection method, the rotor is lifted out, an inspection platform is erected in the stator inner chamber, manual visual inspection and evaluation are carried out point by point, the construction period is long, the inspection resource consumption is large, and the production stoppage loss caused between inspections is quite large. In order to improve the inspection efficiency of the large-scale hydraulic generator, improve the maintenance quality and reduce the resource input, specialized inspection technology needs to be continuously introduced, and the automatic inspection without lifting the rotor is realized by researching and developing a special device for inspecting the generator. At the present stage, no automatic inspection device for the inner bore of the generator for realizing the functions is available in the domestic market.
Disclosure of Invention
The invention aims to provide a photographic inspection device for a stator and a rotor of a hydraulic generator aiming at the defects of the prior art, which realizes the circumferential movement and the control in the vertical direction and realizes the purpose of inspecting the stator, the rotor and related auxiliary equipment of a large hydraulic generator under the condition of not lifting the rotor out.
The technical purpose of the invention is realized by the following technical scheme: hydroelectric generator stator and rotor inspection device that makes a video recording, it includes:
the annular track is provided with transmission teeth on the outer peripheral surface; the circumferential moving device comprises a supporting seat, four groups of roller assemblies are fixedly connected to the bottom of the supporting seat, and the four groups of roller assemblies are stably in rolling connection with the annular track; a first servo motor is fixedly arranged on the supporting seat, a driving gear arranged on a rotating shaft of the first servo motor is meshed with the transmission gear, a second servo motor is also fixedly arranged on the supporting seat, and a rotating shaft of the second servo motor is connected with a winch and a take-up reel;
the supporting seat is further connected with two supporting arms, the supporting arms are hinged with vertical track assemblies, the vertical track assemblies are connected with a camera shooting inspection device in a sliding mode, a steel wire rope is wound on the winch, the free end of the steel wire rope is connected with the camera shooting inspection device, and the take-up reel is used for winding cables of the camera shooting inspection device.
Preferably, the camera shooting inspection device comprises a sliding block, two ends of the sliding block are connected with rollers, and the rollers are embedded in the vertical track assembly; the utility model discloses a portable electronic device, including sliding block, camera, vertical camera mounting panel and horizontal camera mounting panel, be equipped with the cavity in the sliding block, the cavity in-connection of sliding block is two sets of vertical camera mounting panels and a set of horizontal camera mounting panel, all install the camera on vertical camera mounting panel and the horizontal camera mounting panel, still install the light on vertical camera mounting panel and the horizontal camera mounting panel.
Preferably, the vertical track assembly comprises two slide rails arranged in parallel, and the end parts of the two slide rails are connected through a cross rod.
Preferably, each group of roller assemblies comprises an upper roller connected to the bottom of the supporting seat through a supporting column and a lower roller attached to the lower surface of the annular rail; and a universal ball is also arranged on the supporting column in the roller component positioned on the inner peripheral surface of the annular track, and the universal ball is abutted against the inner peripheral surface of the annular track.
Preferably, two driven gears are further rotatably mounted on the supporting seat, the two driven gears are meshed with the transmission gear, and the two driven gears are respectively located on two sides of the driving gear.
Preferably, the supporting seat is connected with a box body, a system power supply is arranged in the box body, an image acquisition computer is installed in the box body and connected with the camera shooting inspection device, and a display screen is installed at the top of the box body.
Preferably, the vertical track assembly further comprises a connecting block detachably connected to the middle of the sliding rail, and the connecting block is used for quickly disassembling and assembling the track assembly.
The invention also provides a hydro-generator maintenance method, which is characterized in that the hydro-generator stator and rotor camera inspection device is used, the annular track is arranged on a rotor magnetic yoke of the hydro-generator under the condition that the rotor is not lifted out, the first servo motor is controlled to enable the circumferential moving device to move circumferentially, and the second servo motor is controlled to enable the camera inspection device to move up and down, so that the hydro-generator rotor, the stator and accessory components thereof are subjected to camera inspection.
Compared with the prior art, the invention has the following beneficial effects:
1. the stator and rotor camera shooting inspection device for the hydraulic generator provided by the invention is small in size and light in weight, realizes the movement and control in the circumferential direction and the vertical direction, and realizes the purpose of inspecting the stator, the rotor and related accessory equipment of the large hydraulic generator under the condition that the rotor is not lifted out.
2. The stator and rotor camera shooting inspection device for the hydraulic generator provided by the invention has the advantages that when the rotor and the stator of the hydraulic generator are inspected, the auxiliary work is less, the rotor does not need to be lifted out, the inspection efficiency is high, and the inspection difficulty is reduced, so that the inspection period can be shortened according to the operation plan of a power station, and the important effect on improving the safe operation of a hydraulic power station is realized.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of the circumferential moving device of the present invention.
Fig. 3 is an enlarged schematic view of a portion a in fig. 1.
Fig. 4 is a schematic structural diagram of the image pickup inspection apparatus of the present invention.
Fig. 5 is a schematic structural view of the roller assembly of the present invention.
Fig. 6 is a partially enlarged schematic view of the scroll wheel assembly of the present invention.
In the above drawings: 10. an annular track; 11. a transmission gear; 20. a circumferential moving device; 21. a supporting seat; 22. a roller assembly; 23. a first servo motor; 24. a driving gear; 25. a second servo motor; 26. a winch; 27. a take-up reel; 28. a support arm; 30. a vertical track assembly; 31. a slide rail; 32. a cross bar; 33. connecting blocks; 40. a camera inspection device; 41. a slider; 42. a roller; 43. a cavity; 44. a vertical camera mounting plate; 45. a horizontal camera mounting plate; 46. a camera; 47. a lighting lamp; 48. a support column; 49. an upper roller; 50. a lower roller; 51. a universal ball; 52. a driven gear; 60. a box body; 61. a system power supply; 62. an image acquisition computer; 63. a display screen; 70. a magnetic base.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The air gaps of the stator and the rotor of the hydraulic generator are safe intervals between the stator and the rotor, and in order to provide higher excitation strength, the air gaps are often very narrow, and for a large generator, the rotor is about 18 meters in diameter and about 3 meters in height, but the air gaps between the stator and the rotor are only about 30mm. The inspection work of accomplishing deciding, rotor in so long and thin narrow and small space is extremely difficult, and the tradition mode is to hang out the back with the rotor, and the inspection personnel enters into and carries out artifical inspection in the stator, and the supplementary link of overhauing on the one hand is more to need hang out the rotor, the degree of difficulty is great, still has great potential safety hazard, and on the other hand is examined and is assembled the required precision when equipment once more higher, seriously influences hydroelectric power plant's production operation.
Based on this, the present invention provides a preferred embodiment, which provides a hydro-generator stator and rotor camera inspection device, referring to fig. 1 to fig. 6, comprising:
an annular rail 10 having a transmission gear 11 formed on an outer circumferential surface thereof; the circumferential moving device 20 comprises a supporting seat 21, four groups of roller assemblies 22 are fixedly connected to the bottom of the supporting seat 21, and the four groups of roller assemblies 22 form stable rolling connection with the annular rail 10; a first servo motor 23 is fixedly installed on the support seat 21, a driving gear 24 installed on a rotating shaft of the first servo motor 23 is meshed with the transmission gear 11, a second servo motor 25 is also fixedly installed on the support seat 21, and a winch 26 and a take-up reel 27 are connected to a rotating shaft of the second servo motor 25;
the support seat 21 is further connected with two support arms 28, the support arms 28 are hinged with a vertical track assembly 30, the vertical track assembly 30 is connected with a camera shooting inspection device 40 in a sliding mode, a steel wire rope is wound on the winch 26, the free end of the steel wire rope is connected with the camera shooting inspection device 40, the take-up reel 27 is used for winding a cable of the camera shooting inspection device 40, the wire diameter of the steel wire rope is far smaller than that of the cable of the camera, so that the cable of the camera shooting in the process of taking up and paying off the cable is loose and does not bear pulling force, the camera shooting inspection device 40 moves up and down and is stressed by the steel wire rope, meanwhile, the take-up and pay-off length is in direct proportion to the rotation angle, the diameter of the take-up reel is not enlarged and desynchronized due to cable superposition, and the direct proportion relation between the rotation angle of the motor and the vertical displacement of the trolley is guaranteed.
In the above embodiment, the vertical rail assembly 30 includes two slide rails 31 arranged in parallel, the slide rails 31 have high rigidity, so that the camera inspection device 40 is prevented from shaking back and forth and left and right, the camera view distance is always kept stable, reliable fixed-focus shooting inspection is realized, and the end parts of the two slide rails 31 are connected through the cross rod 32; the camera inspection device 40 comprises a sliding block 41, two ends of the sliding block 41 are connected with rollers 42, and the rollers 42 are embedded in the vertical track assembly 30; the structure has the cavity 43 in the sliding block 41, two sets of vertical camera mounting panels 44 and a set of horizontal camera mounting panel 45 of cavity 43 in-connection of sliding block 41, all install camera 46 on vertical camera mounting panel 44 and the horizontal camera mounting panel 45, still install light 47 on vertical camera mounting panel 44 and the horizontal camera mounting panel 45.
In order to realize accurate walking, an encoder is arranged on a rotating shaft of the first servo motor 23, the rotating angle of the first servo motor 23 is recorded, and the first servo motor 23 is transmitted to the transmission gear 11, so that no accumulative error is generated.
In some preferred embodiments, each set of the roller assemblies 22 comprises an upper roller 49 connected to the bottom of the supporting seat 21 through a supporting column 48 and a lower roller 50 attached to the lower surface of the circular rail 10; in the roller assembly 22 located on the inner circumferential surface of the circular track 10, a universal ball 51 is further mounted on the supporting column, and the universal ball 51 abuts against the inner circumferential surface of the circular track 10.
In some preferred embodiments, two driven gears 52 are further rotatably mounted on the supporting seat 21, the two driven gears 52 are engaged with the driving gear 11, and the two driven gears 52 are respectively located at two sides of the driving gear 24.
In some preferred embodiments, a box body 60 is connected to the supporting seat 21, a system power supply 61 is arranged in the box body 60, the system power supply 61 supplies power to the first servo motor 23, the second servo motor 25, the camera 46 and the illuminating lamp 47, an image acquisition computer 62 is installed in the box body 60, the image acquisition computer 52 is connected to the image pickup inspection device 40, a display screen 63 is installed on the top of the box body 60, a visual controller is integrated in the image acquisition computer 62, a desktop-level intel sixth generation SkyLake architecture CPU is mounted, and a SURF algorithm is used for processing images to obtain panoramic stitched image data.
The hydro-generator maintenance method uses the hydro-generator stator and rotor camera inspection device in the above embodiment, the annular track 10 is installed on the rotor yoke of the hydro-generator without hanging the rotor out, the first servo motor 23 is controlled to make the circumferential moving device move circumferentially, the second servo motor 25 is controlled to make the camera inspection device 40 move up and down, thereby the hydro-generator rotor, the stator and the accessory parts are camera inspected.
In another preferred embodiment, the bottom of the circular track 10 is connected with a plurality of magnetic force seats 70, when in use, the circular track 10 can be quickly and fixedly connected with a magnetic yoke of a hydraulic generator rotor through the magnetic force seats 70, and after the inspection is finished, the circular track can be quickly disassembled without damaging the rotor.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (8)
1. Hydroelectric generator stator and rotor inspection device that makes a video recording, it characterized in that, it includes:
an annular track, on the outer peripheral surface of which transmission teeth are constructed; the circumferential moving device comprises a supporting seat, the bottom of the supporting seat is fixedly connected with four groups of roller assemblies, and the four groups of roller assemblies and the annular track form stable rolling connection; a first servo motor is fixedly arranged on the supporting seat, a driving gear arranged on a rotating shaft of the first servo motor is meshed with the transmission gear, a second servo motor is also fixedly arranged on the supporting seat, and a rotating shaft of the second servo motor is connected with a winch and a take-up reel;
the supporting seat is further connected with two supporting arms, the supporting arms are hinged with vertical track assemblies, the vertical track assemblies are connected with a camera shooting inspection device in a sliding mode, a steel wire rope is wound on the winch, the free end of the steel wire rope is connected with the camera shooting inspection device, and the take-up reel is used for winding cables of the camera shooting inspection device.
2. The hydro-generator stator and rotor camera inspection device according to claim 1, wherein: the camera inspection device comprises a sliding block, two ends of the sliding block are connected with rollers, and the rollers are embedded in the vertical track assembly; the utility model discloses a camera, including sliding block, vertical camera mounting panel and horizontal camera mounting panel, be equipped with the cavity in the sliding block, the cavity in-connection of sliding block is two sets of vertical camera mounting panels and a set of horizontal camera mounting panel, all install the camera on vertical camera mounting panel and the horizontal camera mounting panel, still install the light on vertical camera mounting panel and the horizontal camera mounting panel.
3. The hydro-generator stator and rotor photographic inspection device according to claim 1, wherein: the vertical track assembly comprises two sliding rails which are arranged in parallel, and the end parts of the two sliding rails are connected through a cross rod.
4. The hydro-generator stator and rotor camera inspection device according to claim 1, wherein: each group of the roller assemblies comprises an upper roller connected to the bottom of the supporting seat through a supporting column and a lower roller attached to the lower surface of the annular track; and in the roller assembly positioned on the inner peripheral surface of the annular track, a universal ball is also arranged on the supporting column and is abutted against the inner peripheral surface of the annular track.
5. The hydro-generator stator and rotor camera inspection device according to claim 1, wherein: still rotate on the supporting seat and install two driven gear, two driven gear with the driving tooth meshing, two driven gear is located respectively the both sides of driving gear.
6. The hydro-generator stator and rotor camera inspection device according to claim 1, wherein: the image acquisition device comprises a supporting seat, a box body is connected to the supporting seat, a system power supply is arranged in the box body, an image acquisition computer is installed in the box body and connected with a camera shooting inspection device, and a display screen is installed at the top of the box body.
7. The hydro-generator stator and rotor camera inspection device according to claim 3, wherein: the vertical track assembly further comprises a connecting block detachably connected to the middle of the sliding rail, and the connecting block is used for quickly assembling and disassembling the track assembly.
8. The hydro-generator overhauling method is characterized in that: the hydro-generator stator and rotor camera inspection device according to any one of claims 1 to 7 is used, wherein the annular rail is mounted on a rotor yoke of the hydro-generator without hanging the rotor out, the first servo motor is controlled to move the circumferential moving device in the circumferential direction, and the second servo motor is controlled to move the camera inspection device in the up-and-down direction, so that the hydro-generator rotor, the stator and the accessory parts thereof are camera inspected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211166979.0A CN115549404B (en) | 2022-09-23 | 2022-09-23 | Imaging inspection device for stator and rotor of hydraulic generator and maintenance method of hydraulic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211166979.0A CN115549404B (en) | 2022-09-23 | 2022-09-23 | Imaging inspection device for stator and rotor of hydraulic generator and maintenance method of hydraulic generator |
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| Publication Number | Publication Date |
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| CN115549404A true CN115549404A (en) | 2022-12-30 |
| CN115549404B CN115549404B (en) | 2023-11-21 |
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| CN202211166979.0A Active CN115549404B (en) | 2022-09-23 | 2022-09-23 | Imaging inspection device for stator and rotor of hydraulic generator and maintenance method of hydraulic generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116545186A (en) * | 2023-04-25 | 2023-08-04 | 中国长江电力股份有限公司 | Annular sliding rail car operation vehicle for overhauling generator stator |
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| CN113270982A (en) * | 2021-04-27 | 2021-08-17 | 湖南省水利投地方电力有限公司 | Vertical hydraulic generator rotor installation and maintenance device |
| CN113315318A (en) * | 2021-05-11 | 2021-08-27 | 中国长江电力股份有限公司 | Inspection device and inspection method suitable for large-scale hydraulic generator stator and rotor |
| CN114813197A (en) * | 2022-06-24 | 2022-07-29 | 湖南大学 | Overhauling device and method for ultrathin suspension type vertical generator |
-
2022
- 2022-09-23 CN CN202211166979.0A patent/CN115549404B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101474996B1 (en) * | 2014-08-22 | 2014-12-22 | 주식회사 아이티아이씨앤씨 | Monitoring camera apparatus using solar energy |
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| CN113270982A (en) * | 2021-04-27 | 2021-08-17 | 湖南省水利投地方电力有限公司 | Vertical hydraulic generator rotor installation and maintenance device |
| CN113315318A (en) * | 2021-05-11 | 2021-08-27 | 中国长江电力股份有限公司 | Inspection device and inspection method suitable for large-scale hydraulic generator stator and rotor |
| CN114813197A (en) * | 2022-06-24 | 2022-07-29 | 湖南大学 | Overhauling device and method for ultrathin suspension type vertical generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116545186A (en) * | 2023-04-25 | 2023-08-04 | 中国长江电力股份有限公司 | Annular sliding rail car operation vehicle for overhauling generator stator |
| CN116545186B (en) * | 2023-04-25 | 2024-03-29 | 中国长江电力股份有限公司 | Annular sliding rail car operation vehicle for overhauling generator stator |
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| CN115549404B (en) | 2023-11-21 |
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