CN113315318A - Inspection device and inspection method suitable for large-scale hydraulic generator stator and rotor - Google Patents
Inspection device and inspection method suitable for large-scale hydraulic generator stator and rotor Download PDFInfo
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- CN113315318A CN113315318A CN202110512596.3A CN202110512596A CN113315318A CN 113315318 A CN113315318 A CN 113315318A CN 202110512596 A CN202110512596 A CN 202110512596A CN 113315318 A CN113315318 A CN 113315318A
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- 238000007689 inspection Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 1
- 238000010248 power generation Methods 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
-
- 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
-
- 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
-
- 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
-
- 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
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Manufacture Of Motors, Generators (AREA)
Abstract
The invention provides an inspection device and an inspection method suitable for a stator and a rotor of a large hydraulic generator, wherein the inspection device comprises a support frame, the bottom of the support frame is provided with a plurality of support arms supported on the rotor or/and the stator, an arc-shaped track is arranged on the support frame, a walking trolley is arranged on the arc-shaped track, the walking trolley is connected with a vertical moving mechanism through a connecting frame, the vertical moving mechanism comprises a vertical slide way, a slide block matched with the vertical slide way is arranged on the vertical slide way, the slide block is connected with a support seat, a camera device is arranged on the support seat, and the support seat is driven by a driving mechanism. The device and the method realize the inspection of the surfaces of the stator and the rotor under the condition of not hoisting the rotor out.
Description
Technical Field
The invention belongs to the field of auxiliary maintenance equipment of large-scale hydraulic generator stators and rotors, and particularly relates to an inspection device and an inspection method suitable for large-scale hydraulic generator stators and rotors.
Background
At present, the comprehensive inspection work of the stator and the rotor of the large-scale hydraulic generator needs to be carried out in a state of lifting out the rotor. A large number of parts such as an upper machine head, an upper guide bearing, a frame and the like need to be removed when the rotor is hoisted out, and the rotor with the hoisting weight of nearly 2000 tons is hoisted, so that a large number of professionals are involved, and the safety risk is high. Therefore, the power generation enterprise has the practical problems of large preorder workload, high safety risk, long construction period, more participated workers, high investment cost and the like for the comprehensive inspection work of the stator and the rotor of the hydraulic generator.
The gap between the rotor and the stator is narrow, and the turbine generator can be inspected by using the gap without lifting the rotor out.
Disclosure of Invention
The invention aims to provide a device and a method for inspecting a stator and a rotor of a large hydraulic generator, which are suitable for inspecting the surface of the stator and the rotor of the large hydraulic generator under the condition of not hanging the rotor out.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides an inspection device suitable for large-scale hydraulic generator stator and rotor, includes the support frame, and the support frame bottom is equipped with a plurality of support arms that support on rotor or/and stator, is equipped with the arc track on the support frame, is equipped with the walking dolly on the arc track, and the walking dolly passes through the link to be connected with vertical moving mechanism, and vertical moving mechanism includes vertical slide, is equipped with on the vertical slide rather than the complex slider, slider and supporting connection are equipped with camera device on the supporting seat, and the supporting seat passes through the actuating mechanism drive.
In the preferred scheme, actuating mechanism includes the mounting bracket, is equipped with the screw rod on the mounting bracket, is equipped with the nut on the screw rod, and the screw rod passes through gear motor drive, and the nut is connected with the supporting seat.
In a preferred scheme, a magnetic base is arranged at the lower end of the support arm.
In a preferred scheme, the camera device is a wireless micro camera.
The invention also provides an inspection method suitable for the stator and the rotor of the large hydraulic generator, which comprises the following steps:
firstly, hoisting the inspection device through a hoisting mechanism after the inspection device is assembled;
step two, adjusting the angle to enable the arc-shaped track to be arranged along the radian of an air gap between the rotor and the stator, arranging a vertical moving mechanism in the air gap, and adsorbing the magnetic base on the rotor to realize the installation of the support frame;
step three, the walking trolley moves along the arc-shaped track, after the walking trolley moves to a target position, the speed reduction motor is started to drive the supporting seat to move up and down, the image acquisition in the vertical range is realized by the camera device, and after the walking trolley moves to the end part of the arc-shaped track, the data acquisition of the stator and the rotor in the radiation range of the arc-shaped track is completed;
and step four, readjusting the position of the support frame, and repeating the operation of the step two and the operation of the step three until the stator and the rotor are inspected for one circle.
According to the inspection device and the inspection method suitable for the stator and the rotor of the large-scale hydraulic generator, provided by the invention, the gap between the rotor and the stator is used for inspection, and the inspection and analysis judgment work in an air gap can be completed without hanging the rotor, so that a large amount of disassembly work can be omitted, and the comprehensive inspection of the surface of the stator and the rotor can be realized. The method saves human resources and engineering quantity, reduces safety risks, shortens construction period and saves cost investment.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic structural view of the vertical moving mechanism;
in the figure: the device comprises a support frame 1, a rotor 2, a stator 3, a support arm 4, an arc-shaped track 5, a magnetic base 6, a walking trolley 7, a connecting frame 8, a vertical slide way 9, a slider 10, a support seat 11, a camera device 12, a mounting frame 13, a screw 14, a nut 15 and a speed reduction motor 16.
Detailed Description
As shown in fig. 1-3, an inspection device suitable for large-scale hydraulic generator stator and rotor, including support frame 1, support frame 1 bottom is equipped with a plurality of support arms 4 that support on rotor 2 or stator 3, be equipped with arc track 5 on the support frame 1, arc track 5 sets up along the clearance circumference between rotor 2 and the stator 3, be equipped with walking dolly 7 on the arc track 5, walking dolly 7 passes through AC direct current motor drive, walking dolly 7 is connected with vertical moving mechanism through link 8, vertical moving mechanism includes vertical slide 9, be equipped with on the vertical slide 9 rather than complex slider 10, slider 10 is connected with supporting seat 11, be equipped with camera device 12 on the supporting seat 11, in this embodiment, camera device 12 is wireless miniature camera, supporting seat 11 passes through actuating mechanism drive.
The driving mechanism comprises a mounting frame 13, a screw 14 is arranged on the mounting frame 13, the screw 14 is arranged in parallel with the vertical slide 9, the screw 14 is rotatably mounted on the mounting frame 13 through a bearing, a nut 15 matched with the screw 14 is arranged on the screw 14, the screw 14 is driven through a speed reduction motor 16, and the nut 15 is connected with the supporting seat 11.
The screw 14 is driven to rotate through the speed reducing motor 16, the nut 15 is driven to move up and down, the supporting seat 11 is driven to move up and down, and therefore the camera device 12 can conveniently take a picture of the surface of the rotor 2 or the stator 3, and the rotor 2 or the stator 3 can be inspected.
The driving mechanism can be replaced by a hydraulic cylinder and the like, the hydraulic cylinder is connected with the supporting seat 11, and the supporting seat 11 can move up and down through the stretching of the hydraulic cylinder.
Preferably, the lower end of the arm 4 is provided with a magnetic base 16. The support arm 4 is connected with the rotor 2 through the magnetic base 16, so that the stability of the support frame 1 is improved.
The inspection method suitable for the stator and the rotor of the large-scale hydraulic generator comprises the following steps:
firstly, hoisting the inspection device through a hoisting mechanism after the inspection device is assembled;
step two, adjusting the angle to enable the arc-shaped track 5 to be arranged along the radian of an air gap between the rotor 2 and the stator 3, arranging a vertical moving mechanism in the air gap, and adsorbing the magnetic base 16 on the rotor 2 to realize the installation of the support frame 1;
and step three, the walking trolley 7 moves along the arc-shaped track 5, after the walking trolley moves to a target position, the speed reduction motor 16 is started to drive the supporting seat 11 to move up and down, the camera device 12 realizes image acquisition in a vertical range, the walking trolley 7 is moved to different positions of the arc-shaped track 5, and the adjustment of the horizontal position of data acquisition is changed.
After the traveling trolley 7 moves to the end part of the arc-shaped track 5, data acquisition of the stator and the rotor within the radiation range of the arc-shaped track 5 is completed;
and step four, readjusting the position of the support frame 1, and repeating the operation of the step two and the operation of the step three until the stator and the rotor are inspected for one circle.
The device can not carry out a large amount of dismantlements work, realizes carrying out comprehensive inspection to the stator rotor surface. The method saves human resources and engineering quantity, reduces safety risks, shortens construction period and saves cost investment. The inspection, analysis and judgment work in the air gap can be finished without hanging the rotor.
The rotor is lifted out about 1200 working days in the original working mode, only 20 working days are needed by applying the method, and only one item of manpower resource is saved by 98%.
Claims (5)
1. The utility model provides an inspection device suitable for large-scale hydraulic generator stator and rotor, a serial communication port, including support frame (1), support frame (1) bottom is equipped with a plurality of support arms (4) of supporting on rotor (2) or/and stator (3), be equipped with arc track (5) on support frame (1), be equipped with walking dolly (7) on arc track (5), walking dolly (7) are connected with vertical moving mechanism through link (8), vertical moving mechanism includes vertical slide (9), be equipped with on vertical slide (9) rather than complex slider (10), slider (10) are connected with supporting seat (11), be equipped with camera device (12) on supporting seat (11), supporting seat (11) are through the actuating mechanism drive.
2. The inspection device for the stator and the rotor of the large-scale hydraulic generator according to claim 1, wherein the driving mechanism comprises a mounting frame (13), a screw (14) is arranged on the mounting frame (13), a nut (15) is arranged on the screw (14), the screw (14) is driven by a speed reduction motor (16), and the nut (15) is connected with the supporting seat (11).
3. The inspection device for the stator and the rotor of the large-scale hydraulic generator according to claim 1, wherein the lower end of the support arm (4) is provided with a magnetic base (6).
4. The inspection device for the stator and the rotor of the large-scale hydraulic generator according to claim 1, wherein the camera device (12) is a wireless micro camera.
5. The inspection method suitable for the stator and the rotor of the large-scale hydraulic generator is characterized by comprising the following steps of:
firstly, hoisting the inspection device through a hoisting mechanism after the inspection device is assembled;
step two, adjusting the angle to enable the arc-shaped track (5) to be arranged along the radian of an air gap between the rotor (2) and the stator (3), arranging a vertical moving mechanism in the air gap, and adsorbing a magnetic base (16) on the rotor (2) to realize the installation of the support frame (1);
step three, the walking trolley (7) moves along the arc-shaped track (5), after the walking trolley moves to a target position, the speed reduction motor (16) is started to drive the supporting seat (11) to move up and down, the camera device (12) realizes image acquisition in a vertical range, and after the walking trolley (7) moves to the end part of the arc-shaped track (5), data acquisition of a stator and a rotor in a radiation range of the arc-shaped track (5) is completed;
and step four, readjusting the position of the support frame (1), and repeating the operation of the step two and the operation of the step three until the stator and the rotor are inspected for one circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512596.3A CN113315318A (en) | 2021-05-11 | 2021-05-11 | Inspection device and inspection method suitable for large-scale hydraulic generator stator and rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512596.3A CN113315318A (en) | 2021-05-11 | 2021-05-11 | Inspection device and inspection method suitable for large-scale hydraulic generator stator and rotor |
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| CN113315318A true CN113315318A (en) | 2021-08-27 |
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| CN202110512596.3A Pending CN113315318A (en) | 2021-05-11 | 2021-05-11 | Inspection device and inspection method suitable for large-scale hydraulic generator stator and rotor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115549404A (en) * | 2022-09-23 | 2022-12-30 | 中国长江电力股份有限公司 | Hydraulic generator stator and rotor camera shooting inspection device and hydraulic generator maintenance method |
| CN116553380A (en) * | 2023-05-06 | 2023-08-08 | 中国长江电力股份有限公司 | Alignment monitoring system and method for automatic plugboard mechanism for hoisting hydro-generator rotor |
| CN116588809A (en) * | 2023-05-06 | 2023-08-15 | 中国长江电力股份有限公司 | Automatic plugboard device for hoisting rotor of hydraulic generator and operation method |
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| CN212752074U (en) * | 2020-08-19 | 2021-03-19 | 国家电网有限公司 | Vertical hydraulic generator stator overhauls platform |
| CN112147144A (en) * | 2020-09-27 | 2020-12-29 | 湖北文理学院 | Movable deep hole detection equipment |
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Application publication date: 20210827 |