CN115058708A - In-place additive repair equipment for failure component of hydroelectric generating set and use method of in-place additive repair equipment - Google Patents

In-place additive repair equipment for failure component of hydroelectric generating set and use method of in-place additive repair equipment Download PDF

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Publication number
CN115058708A
CN115058708A CN202210582561.1A CN202210582561A CN115058708A CN 115058708 A CN115058708 A CN 115058708A CN 202210582561 A CN202210582561 A CN 202210582561A CN 115058708 A CN115058708 A CN 115058708A
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module
laser
focusing
optical
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CN115058708B (en
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彭芳瑜
周林
杨岑岑
喻云
邓犇
唐小卫
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Wuhan Digital Design And Manufacturing Innovation Center Co ltd
China Yangtze Power Co Ltd
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Wuhan Digital Design And Manufacturing Innovation Center Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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Abstract

The invention discloses in-place additive repair equipment for a failure component of a hydroelectric generating set and a using method thereof. The invention utilizes the free adsorption characteristic of the magnetic attraction device of the movement mechanism, can realize the on-site additive repair processing with quick response, can focus and radiate light spots with different sizes and light spot scanning ranges due to the characteristics of variable focusing and deflection of the optical module of the variable light spot laser cladding processing head, can pertinently solve the additive repair of different failure components of the hydroelectric generating set and the additive repair processing of local selection areas, has the advantages of energy concentration, small heat accumulation, high repair layer quality and good effect, can also utilize the characteristic of flexible output of laser fibers, can better adapt to the on-site multi-scene and multi-angle additive repair processing tasks of the hydroelectric generating set, and meets the maintenance requirement of quick response.

Description

In-place additive repair equipment for failure component of hydroelectric generating set and use method of in-place additive repair equipment
Technical Field
The invention relates to the technical field of additive repair, in particular to in-place additive repair equipment for a failure component of a hydroelectric generating set and a using method of the in-place additive repair equipment.
Background
China is one of the most abundant countries of hydraulic resources in the world, hydropower stations are widely distributed, but various components of a hydropower unit of the hydropower station are continuously lost to different degrees in the working process, such as: the corrosion, the oxidation and the like of the electrical assembly, the abrasion, the cavitation erosion, the scouring and the wear and the like of the mechanical assembly greatly reduce the service life if the maintenance is not timely, and once the assembly fails, the generating efficiency of the hydroelectric generating set is influenced, and the accidents such as shutdown and the like can be caused if the assembly is serious.
When various components of the existing hydroelectric generating set are damaged, generally, spare parts are integrally replaced or local repair is carried out on a damaged area by means of surfacing, spraying, brushing and the like during maintenance, but the cost of integrally replacing the failed components is high, the period is long, and the problems of poor surface repair precision, poor brushing and plating bonding strength and the like exist in the processing modes of surfacing, spraying and the like; there is therefore a need for a flexible processing apparatus that achieves low heat build-up and high repair quality.
Disclosure of Invention
The invention aims to provide in-place additive repair equipment for a failure component of a hydroelectric generating set and a using method thereof, aiming at the defects in the prior art.
The equipment comprises a variable-light-spot laser cladding processing device and a movement mechanism with a magnetic suction device, wherein the variable-light-spot laser cladding processing device is arranged on the movement mechanism, the movement mechanism drives the variable-light-spot laser cladding processing device to move, and the variable-light-spot laser cladding processing device comprises a variable-light-spot laser cladding processing head, a laser generator and an airborne powder feeder; the variable-spot laser cladding machining head comprises a laser cladding machining head body and a cladding nozzle arranged on the laser cladding machining head body, a powder feeding channel is arranged on the cladding nozzle, and the air-borne powder feeder is communicated with the cladding nozzle through the powder feeding channel; the laserThe inside of the optical cladding processing head body is
Figure BDA0003664617220000022
A mold cavity body, the
Figure BDA0003664617220000021
The horizontal segment of type cavity has set gradually variable focusing optics collimation module, variable focusing optics focus module, deflectable optics reflection module along laser light path direction, the laser incident end of laser cladding processing head body is provided with optical fiber splice for with laser generator's transmission optical fiber butt joint, the laser that laser generator sent is passed through transmission optical fiber, optical fiber splice and is transmitted extremely
Figure BDA0003664617220000023
A cavity for reflecting laser to the cavity after passing through the variable focusing optical collimation module, the variable focusing optical focusing module and the deflecting optical reflection module in sequence
Figure BDA0003664617220000024
The vertical section of the cavity body is output to the surface of a workpiece to be processed by a cladding nozzle to form a molten pool, the powder feeding channel is used for being connected with an external air-borne powder feeder, and cladding powder sent by the air-borne powder feeder is conveyed to the molten pool in a light spot irradiation area through the powder feeding channel to realize laser cladding processing; the diameter of the circular light spot is variable by independently adjusting or jointly adjusting the axial position of a variable focusing mechanism of the variable focusing optical collimation module and the variable focusing optical focusing module; the deflectable optical reflection module comprises a reflection module deflection motor, a deflection reflector and a focusing module, wherein the reflection module deflection motor is used for adjusting and controlling the deflection angle of the deflectable optical reflection module, so that circular light spots with variable diameters irradiated on the surface of a region to be processed by laser focusing are scanned in a single direction on the surface of the region to be processed to form light spots with specific linear or rectangular set sizes.
Further, the device also comprises a water chilling unit for cooling the variable-facula laser cladding processing head and the laser generator.
Furthermore, the device also comprises a protective glass module which is arranged on the device
Figure BDA0003664617220000025
In the vertical section of the cavity, laser beams sequentially pass through the variable focusing optical alignment module, the variable focusing optical focusing module, the deflectable optical reflection module and the protective lens module in the variable light spot laser cladding processing head, and are focused and irradiated on an area to be processed to form light spots with set sizes.
Further, the variable focusing structure of the optical collimation module or the optical focusing module can enable the diameter size of the circular light spot to be variable within the range of 1-6mm through independent adjustment or joint adjustment.
Furthermore, the scanning field range of the scanning to form a specific linear or rectangular light spot can be adjusted within 1-30mm by controlling the deflection angle of the deflectable optical reflecting module.
Further, the laser generator is an infrared band laser generator with the wavelength of 900-.
Further, the air-borne powder feeder adopts a high-precision motor to control the rotating speed of a powder disc filled with powder inside in unit time so as to adjust the powder supply amount in unit time, and meanwhile, inert gas-borne powder is conveyed to a cladding nozzle of the variable-spot laser cladding processing head through an externally-connected flexible conveying pipeline; the inert gas is one of argon, nitrogen and helium.
Furthermore, the powder feeding mode of the cladding nozzle of the variable-spot laser cladding processing head can be a coaxial optical inner powder feeding mode or an optical outer included angle bypass powder feeding mode.
Furthermore, the motion mechanism is a combination of a multi-degree-of-freedom industrial robot or a multi-degree-of-freedom module.
A use method of in-place additive repair equipment for a failure component of a hydroelectric generating set comprises the following specific steps: determining the failure component part of the hydroelectric generating set, installing a movement mechanism with a magnetic suction device near the failure component, and mounting the variable-light-spot laser cladding processing head by the movement mechanism, wherein a laser beam emitted by a laser generator is output by a transmission optical fiber coupled with the movement mechanism and is connected and locked with an optical fiber connector module at the tail part of the variable-light-spot laser cladding processing head; the deflection angle of the deflectable optical reflection module can be adjusted and controlled through a deflection motor of the reflection module, so that the circular light spot with the variable diameter can be scanned in a certain scanning field range on the surface of the area to be processed to form a linear or rectangular light spot with a set size; the laser power can be set in a laser generator control system, so that the light spots with the set sizes can obtain laser energy to melt an irradiated area to form a molten pool, meanwhile, a conveying pipeline connected with an air-borne powder feeder and a variable-light-spot laser cladding processing head conveys powder materials for material increase into the molten pool by using inert gas to be rapidly sintered and cooled to form a coating with a certain thickness in metallurgical combination with a base material, finally, a moving mechanism drives the mounted variable-light-spot laser cladding processing head to complete material increase repair processing of a design track according to the design track, a water cooling unit is used for cooling the laser generator and the variable-light-spot laser cladding processing head, and a power supply system supplies power for the devices.
The invention provides equipment and a method for in-place material increase repair of a failure component of a hydroelectric generating set, which utilize the free adsorption characteristic of a magnetic device of a movement mechanism, can realize in-place material increase repair machining with quick response, can focus and radiate light spots with different sizes and light spot scanning ranges due to the characteristics of variable focusing and deflection of an optical module of a variable light spot laser cladding machining head, can pertinently solve the material increase repair of different failure components of the hydroelectric generating set and the material increase repair machining of local selection areas, has the advantages of energy concentration, small heat accumulation, high repair layer quality and good effect, can also utilize the characteristic of flexible output of laser fibers, can better adapt to the in-place multi-scene and multi-angle material increase repair machining task of the hydroelectric generating set, and meets the maintenance requirement of quick response.
Drawings
Fig. 1 is a schematic structural diagram of a variable spot laser cladding processing head;
fig. 2 is a schematic diagram of the overall optical path structure of the variable spot laser cladding processing head;
FIG. 3 is a schematic diagram of an optical principle of variable focus;
FIG. 4 is a schematic diagram of an optical principle structure of a deflectable angle control;
fig. 5 is a schematic diagram of the representation of the variable spot during laser cladding processing.
Fig. 6 is a schematic layout of the in-place additive repair device for a failed component of a hydroelectric generating set according to the present invention.
1. A variable spot laser cladding processing device; 2. a motion mechanism; 3. the variable facula laser cladding processing head; 4. a laser generator; 5. an airborne powder feeder; 6. laser cladding processing head body; 7. cladding nozzles; 8. a powder feeding channel; 9. a variable focus optical collimating module; 10. a variable focus optical focus module; 11. a deflectable optical reflective module; 12. an optical fiber splice; 13. a transmission optical fiber; 14. a reflective module deflection motor; 15. a deflection mirror; 16. a focusing module; 17. a protective glass module; 18. a water cooling unit; 19. a variable focus mechanism; 20. a power supply system; 21. and (5) controlling the system.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 6, the in-place material increase repair equipment for the failure component of the hydroelectric generating set comprises a variable-spot laser cladding processing device 1 and a moving mechanism 2 with a magnetic absorption device, wherein the variable-spot laser cladding processing device 1 is arranged on the moving mechanism 2, the moving mechanism 2 drives the variable-spot laser cladding processing device 1 to move, and the variable-spot laser cladding processing device 1 is subjected to variable-spot laser cladding and material increase repairThe device 1 comprises a variable-spot laser cladding processing head 3, a laser generator 4 and an airborne powder feeder 5; the variable-spot laser cladding processing head 3 comprises a laser cladding processing head body 6 and a cladding nozzle 7 arranged on the laser cladding processing head body 6, a powder feeding channel 8 is arranged on the cladding nozzle 7, and the airborne powder feeder 5 is communicated with the cladding nozzle 7 through the powder feeding channel 8; the interior of the laser cladding processing head body 6 is
Figure BDA0003664617220000051
The mould cavity body is provided with a cavity body,
Figure BDA0003664617220000052
the horizontal section of the cavity body is sequentially provided with a variable focusing optical collimation module 9, a variable focusing optical focusing module 10 and a deflectable optical reflection module 11 along the laser light path direction, the laser incident end of the laser cladding processing head body 6 is provided with an optical fiber joint 12 for butt joint with a transmission optical fiber 13 of the laser generator 4, and the laser sent by the laser generator 4 is transmitted to the transmission optical fiber 13 and the optical fiber joint 12 through the transmission optical fiber 13 and the optical fiber joint 12
Figure BDA0003664617220000053
A cavity, and sequentially passes through the variable focusing optical collimation module 9, the variable focusing optical collimation module 10 and the deflectable optical reflection module 11 to reflect the laser to
Figure BDA0003664617220000054
The vertical section of the cavity is output to the surface of a workpiece to be processed by a cladding nozzle 7 to form a molten pool, a powder feeding channel 8 is used for being connected with an external airborne powder feeder 5, and cladding powder sent by the airborne powder feeder 5 is conveyed to the molten pool in a spot irradiation area through the powder feeding channel 8 to realize laser cladding processing; the diameter of the circular light spot is variable by independently adjusting or jointly adjusting the lifting of the axial position of the variable focusing mechanism 19 of the variable focusing optical collimation module 9 and the variable focusing optical collimation module 10; the deflectable optical reflection module 11 comprises a reflection module deflection motor 14, a deflection mirror 15 and a focusing module 16, wherein the reflection module deflection motor 14 deflects the deflectable optical reflection module 11 by a deflection angleAnd adjusting and controlling to realize that the laser is focused and irradiated on the round light spot with variable diameter size on the surface of the area to be processed to form the light spot with a specific linear or rectangular set size in a unidirectional scanning manner on the surface of the area to be processed.
The invention provides a hydroelectric generating set failure component in-place additive repair device and a method, which utilize the free adsorption characteristic of a magnetic device of a movement mechanism 2, can realize quick-response in-place additive repair machining, can focus and radiate light spots with different sizes and light spot scanning ranges due to the characteristics of variable focusing and deflection of an optical module of a variable light spot laser cladding machining head 3, can pertinently solve the additive repair of different failure components of a hydroelectric generating set and the additive repair machining of local selection areas, has the advantages of energy concentration, small heat accumulation, high repair layer quality and good effect, can better adapt to the in-place multi-scene and multi-angle additive repair machining task of the hydroelectric generating set by utilizing the characteristic of flexible output of laser fibers, and meets the maintenance requirement of quick response.
The magnetic attraction device of the motion mechanism 2 is formed by combining a plurality of magnetic attraction areas, and can realize that the magnetic attraction device is attracted around the invalid component in a subarea or full area to fix the motion mechanism 2.
The apparatus may further comprise a water chilling unit for cooling the variable spot laser cladding processing head 3 and the laser generator 4.
The device may further comprise a protective glass module 17, the protective glass module 17 being arranged at
Figure BDA0003664617220000061
In the vertical section of the cavity, after laser beams sequentially pass through the variable focusing optical collimating module 9, the variable focusing optical focusing module 10, the deflectable optical reflecting module 11 and the protective mirror module 17 in the variable light spot laser cladding processing head 3, the laser beams are focused and irradiated in an area to be processed to form light spots with set sizes.
The variable focusing structure of the optical collimating module or the optical focusing module 16 can make the diameter size of the circular light spot variable within the range of 1-6mm by independent adjustment or joint adjustment.
The control of the deflection angle of the deflectable optical reflection module 11 can enable the scanning field range of 1-30mm for scanning to form a specific linear or rectangular light spot to be adjustable.
The laser generator 4 is an infrared band laser generator with the wavelength of 900-.
The air-borne powder feeder 5 adopts a high-precision motor to control the rotating speed of a powder disc filled with powder in the air-borne powder feeder in unit time so as to adjust the powder supply amount in unit time, and meanwhile, inert gas is used for carrying powder and is sent to a cladding nozzle 7 of the variable-spot laser cladding processing head 3 through an external flexible conveying pipeline; the inert gas is one of argon, nitrogen and helium.
The powder feeding mode of the cladding nozzle 7 of the variable-spot laser cladding processing head 3 can be a coaxial optical inner powder feeding mode or an optical outer included angle bypass powder feeding mode.
The motion mechanism 2 is a combination of a multi-degree-of-freedom industrial robot or a multi-degree-of-freedom module.
A use method of in-place additive repair equipment for a failure component of a hydroelectric generating set comprises the following specific steps: determining a failure component part of the hydroelectric generating set, installing a movement mechanism 2 with a magnetic suction device near the failure component, and mounting a variable-spot laser cladding processing head 3 by the movement mechanism 2, wherein a laser beam emitted by a laser generator 4 is output through a transmission optical fiber 13 coupled with the movement mechanism and is connected and locked with an optical fiber connector 12 module at the tail part of the variable-spot laser cladding processing head 3, the laser beam passes through a variable-focusing optical alignment module 9, a variable-focusing optical focusing module 10, a deflectable optical reflection module 11 and a protective mirror module 17 in sequence inside the variable-spot laser cladding processing head 3, and is focused and irradiated on a to-be-processed area to form a spot with a set size, and the variable-focusing mechanism 19 of the optical alignment module and the optical focusing module 16 can be adjusted to realize the variable diameter of the circular spot; the deflection angle of the deflectable optical reflection module 11 can be adjusted and controlled by the reflection module deflection motor 14, so that the circular light spot with the variable diameter can be scanned in a certain scanning field range on the surface of the area to be processed to form a linear or rectangular light spot with a set size; the laser power can be set in a control system of a laser generator 4, so that the light spots with set sizes can obtain laser energy to melt an irradiated area to form a molten pool, meanwhile, a conveying pipeline connected with an air-borne powder feeder 5 and a variable light spot laser cladding processing head 3 conveys powder materials used for material increase into the molten pool by using inert gas to rapidly sinter and cool the powder materials to form a coating with a certain thickness which is metallurgically combined with a base material, finally, a moving mechanism 2 drives the mounted variable light spot laser cladding processing head 3 to complete material increase repairing processing of a designed track according to the designed track, a water cooling unit 18 is used for cooling the laser generator 4 and the variable light spot laser cladding processing head 3, a power supply system 20 supplies power for the devices, and the control system 21 controls the operation.
With reference to fig. 2, 3 and 5, a laser beam is input into the variable spot laser cladding processing head 3 and sequentially passes through the variable focusing optical collimating module 9 and the variable focusing optical focusing module 10; the variable focusing optical collimating module 9 and the variable focusing optical focusing module 10 provided by the invention can move in the axial direction according to the size of a light spot obtained as required to realize the variable diameter of a circular light spot irradiated on the surface of a region to be processed by laser focusing; the specific implementation mode is as follows: the diameter of the circular light spot can be changed within the range of 1-6mm by independently adjusting or jointly adjusting the axial position of the variable focusing mechanism 19 of the optical collimation module and the optical focusing module 16.
As shown in fig. 2, 3, 4, and 5, after the deflectable optical reflection module 11 built in the variable spot laser cladding processing head 3 provided by the present invention reflects the laser beam, the deflectable optical reflection module 11 can be adjusted and controlled by the reflection module deflection motor 14 to adjust the deflection angle, so that the circular spot with variable diameter and irradiated on the surface of the region to be processed is scanned in a single direction on the surface of the region to be processed to form a spot with a specific linear or rectangular set size, and the deflection angle can make the field scanning range in the single direction adjustable within 1-30 mm.
The above is not relevant and is applicable to the prior art.
While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the invention, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the invention as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention are included in the scope of the present invention.

Claims (10)

1. The in-place material increase repairing equipment for the failure component of the hydroelectric generating set is characterized by comprising a variable-light-spot laser cladding processing device (1) and a moving mechanism (2) with a magnetic suction device, wherein the variable-light-spot laser cladding processing device (1) is arranged on the moving mechanism (2), the moving mechanism (2) drives the variable-light-spot laser cladding processing device (1) to move, and the variable-light-spot laser cladding processing device (1) comprises a variable-light-spot laser cladding processing head (3), a laser generator (4) and an airborne powder feeder (5); the variable-spot laser cladding machining head (3) comprises a laser cladding machining head body (6) and a cladding nozzle (7) arranged on the laser cladding machining head body (6), a powder feeding channel (8) is arranged on the cladding nozzle (7), and the airborne powder feeder (5) is communicated with the cladding nozzle (7) through the powder feeding channel (8); the interior of the laser cladding processing head body (6) is
Figure FDA0003664617210000011
A mold cavity body, the
Figure FDA0003664617210000012
The horizontal section of the cavity body is sequentially provided with a variable focusing optical collimation module (9), a variable focusing optical focusing module (10) and a deflectable optical reflection module (11) along the direction of a laser light path, and the laser incident end of the laser cladding machining head body (6) is provided with an optical fiber connector (12) for transmitting light with a laser generator (4)The fibers (13) are butted, and the laser sent by the laser generator (4) is transmitted to the fibers through the transmission fibers (13) and the fiber joints (12)
Figure FDA0003664617210000013
The cavity body sequentially passes through the variable focusing optical collimation module (9), the variable focusing optical focusing module (10) and the deflectable optical reflection module (11) and then reflects laser to the cavity body
Figure FDA0003664617210000014
The vertical section of the cavity is output to the surface of a workpiece to be processed by a cladding nozzle (7) to form a molten pool, the powder feeding channel (8) is used for being connected with an external airborne powder feeder (5), and cladding powder sent by the airborne powder feeder (5) is conveyed to the molten pool of a light spot irradiation area through the powder feeding channel (8) to realize laser cladding processing; the diameter of a circular light spot is variable by independently adjusting or jointly adjusting the lifting of the axial position of a variable focusing mechanism (19) of a variable focusing optical collimation module (9) and a variable focusing optical focusing module (10); the deflectable optical reflection module (11) comprises a reflection module deflection motor (14), a deflection reflector (15) and a focusing module (16), wherein the reflection module deflection motor (14) is used for adjusting and controlling the deflection angle of the deflectable optical reflection module (11), so that circular light spots with variable diameters irradiated on the surface of a region to be processed by laser focusing are scanned in a single direction on the surface of the region to be processed to form light spots with specific linear or rectangular set sizes.
2. The in-place additive repair equipment for the failed component of the hydroelectric generating set as claimed in claim 1, further comprising a water chilling unit (18) for cooling the variable-spot laser cladding processing head (3) and the laser generator (4).
3. The in-place additive repair device for the failed component of the hydroelectric generating set according to claim 1, further comprising a protective mirror module (17), wherein the protective mirror module (17) is arranged on the in-place additive repair device
Figure FDA0003664617210000021
In the vertical section of the cavity, laser beams sequentially pass through a variable focusing optical alignment module (9), a variable focusing optical focusing module (10), a deflectable optical reflection module (11) and a protective mirror module (17) in a variable light spot laser cladding processing head (3) and then are focused and irradiated on an area to be processed to form light spots with set sizes.
4. The in-place additive repair device for the hydroelectric generating set failure component as recited in claim 1, wherein the variable focusing structure of the optical alignment module or the optical focusing module (16) can be adjusted individually or jointly to enable the diameter size of the circular light spot to be variable within a range of 1-6 mm.
5. The in-place additive repair device for the hydroelectric generating set failure component as recited in claim 1, wherein the sweep field range of the scanning to form a specific linear or rectangular light spot is adjustable within 1-30mm by controlling the deflection angle of the deflectable optical reflection module (11).
6. The in-place material increase repair device for the hydroelectric generating set failure component as claimed in claim 1, wherein the laser generator (4) is an infrared band laser generator with a wavelength of 900-.
7. The in-place additive repair equipment for the failed component of the hydroelectric generating set as claimed in claim 1, wherein the airborne powder feeder (5) controls the rotation speed of a powder tray filled with powder inside in unit time by using a high-precision motor so as to adjust the amount of powder supplied in unit time, and meanwhile, the powder is carried by using inert gas and is sent to a cladding nozzle (7) of the variable-spot laser cladding processing head (3) through an externally-connected flexible conveying pipeline; the inert gas is one of argon, nitrogen and helium.
8. The utility model provides a hydroelectric generating set subassembly that loses is vibration material disk repair equipment in place which characterized in that: the powder feeding mode of the cladding nozzle (7) of the variable-spot laser cladding processing head (3) can be a coaxial optical inner powder feeding mode or an optical outer included angle bypass powder feeding mode.
9. The in-place additive repair device for the failed component of the hydroelectric generating set according to claim 1, wherein: the movement mechanism (2) is a combination of a multi-degree-of-freedom industrial robot or a multi-degree-of-freedom module.
10. The use method of the in-place additive repair device for the failed hydroelectric generating set component, according to claim 1, wherein the in-place additive repair device comprises: the using method comprises the following specific steps: determining the failure component part of the hydroelectric generating set, installing a movement mechanism (2) with a magnetic attraction device near the failure component, mounting the variable-spot laser cladding processing head (3) by the movement mechanism (2), wherein a laser beam emitted by a laser generator (4) is output by a transmission optical fiber (13) coupled with the movement mechanism and is connected and locked with an optical fiber joint (12) module at the tail part of the variable-spot laser cladding processing head (3), the laser beam is focused and irradiated in a to-be-processed area to form a spot with a set size after sequentially passing through a variable-focusing optical alignment module (9), a variable-focusing optical focusing module (10), a deflectable optical reflection module (11) and a protective mirror module (17) in the variable-spot laser cladding processing head (3), and can adjust the variable-focusing mechanism (19) of the optical alignment module and the optical focusing module (16), the diameter of the circular light spot can be changed; the adjusting control of the deflection angle of the deflectable optical reflection module (11) can be carried out by a reflection module deflection motor (14), the circular facula with variable diameter can be scanned in a certain scanning field range on the surface of a region to be processed to form linear or rectangular facula with set size, the laser power can be set in a laser generator (4) control system to ensure that the facula with set size obtains laser energy to melt an irradiated region to form a molten pool, meanwhile, a conveying pipeline connected with an air-borne powder feeder (5) and a variable facula laser cladding processing head (3) conveys powder materials used for material increase into the molten pool by inert gas to carry out rapid sintering and cooling to form a coating layer with a certain thickness which is metallurgically combined with a base material, and finally, the suspended variable facula laser processing head (3) is driven by a movement mechanism (2) according to a design track to complete the material increase repairing processing of the design track, the water cooling unit (18) is used for cooling the laser generator (4) and the variable-spot laser cladding processing head (3), and a power supply system supplies power to the devices.
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