An underwater high-power laser deposition continuous operation device and method

Abstract

The present invention relates to an underwater high-power laser deposition continuous operation device and method. The device includes a drainage cover. Inside the drainage cover, there are a cladding nozzle and an adhesive removal mechanism. The bottom of the drainage cover is open, enabling the cladding nozzle to be aligned with the area to be processed. An air duct is provided in the drainage cover to drain the water in the area to be processed to create a local dry area. The adhesive removal mechanism has a push knife with adjustable position and angle, which is used to remove the powder adhesive of the cladding nozzle during the underwater high-power deposition process. A cooling water delivery mechanism is also provided on the drainage cover to cool the cladding nozzle with the water in the working environment. It also includes a control system, which is used to control the operation of the adhesive removal mechanism according to the generation situation of the powder adhesive of the cladding nozzle. It can perform continuous operation of high-power laser deposition repair on the underwater damaged parts of offshore engineering equipment, extend the service life of the cladding nozzle, ensure the forming quality and performance, and shorten the operation time.

Description

Technical Field

[0001] The present invention relates to the technical field of laser processing and manufacturing, and in particular to an underwater high-power laser deposition continuous operation device and method. Background Art

[0002] The large-scale development and utilization of marine resources require the support of various offshore platforms, such as oil drilling platforms, subsea oil and gas transportation pipelines, port terminals, ship repairs, etc. Different from land-based platforms, in addition to the loads under normal working conditions, offshore platforms need to withstand the influence of external environments such as seawater corrosion, scouring, impacts of marine garbage and organisms, temperature stress changes, and human errors. Various defects are likely to appear on the surface of structural components, seriously affecting the service safety of offshore equipment. In-situ repair of damaged parts underwater can significantly improve the repair efficiency and reduce the repair cost. Laser cladding technology is an advanced material surface modification technology, which has the characteristics of fast cooling speed, low coating dilution rate, wide range of cladding materials, and easy automation, and is widely used in structural repair. At present, the underwater local dry zone method laser cladding is an effective method to achieve underwater laser cladding.

[0003] Compared with the currently widely used low-power (less than 6000W) laser deposition process, the high-power (6000W - 15000W) laser deposition process can significantly improve the deposition efficiency and deposition quality of formed parts. However, high-power laser beams usually cause obvious overheating problems at the laser cladding nozzle, resulting in thermal deformation of the nozzle, seriously affecting the high-power deposition quality. Currently, the cooling technical solutions for laser cladding equipment mostly focus on the cooling of the optical lens position of the laser cladding head. For example, Patent 202220764391.4 discloses an internally fully water-cooled annular powder feeding adjustable high-speed laser cladding head, which realizes water cooling inside the cladding head and reduces the number of exposed pipelines to avoid pipeline burnout. However, it only cools the laser cladding head body and cannot solve the problem of excessive temperature of the laser cladding nozzle. During the laser deposition process, when the temperature of the cladding nozzle is too high, on the one hand, it will damage the nozzle structure and affect the service life of the cladding nozzle; on the other hand, the high temperature will cause partial phase change of some cladding powders at the powder outlet of the cladding nozzle, generating adhesives, reducing the cladding efficiency and affecting the forming quality.

[0004] During the high-power laser cladding process, powder usually adheres to the nozzle of the laser cladding head. As the processing accumulates, the adhered powder forms an adhesive with a certain mass and volume. The adhesive will affect the uniformity of the powder phase distribution at the powder outlet, thereby reducing the processing quality and affecting the forming efficiency. The generation of the adhesive is mainly due to the rebound of some powder near the molten pool, which adheres to the nozzle of the laser cladding head, and during the powder discharging process of the cladding nozzle, due to the adhesion caused by the overheating of the cladding head, some powder adheres to the nozzle outlet during the flowing process. In the air environment laser cladding processing, when obvious adhesives appear, the method of manual cleaning is adopted. However, on the one hand, a large amount of plasma smoke and dust are generated during the laser processing process, which will seriously endanger human health and it is difficult to ensure the continuity of the processing process; on the other hand, the underwater laser processing environment is relatively special and complex. At this time, manual cleaning of the adhesive on the cladding nozzle cannot be relied on. Therefore, the applicant believes that it is urgent to develop a device and method that can realize automatic water cooling and cleaning of adhesives for underwater high-power laser deposition. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a device and method for realizing continuous operation of underwater high-power laser deposition, which can automatically clean the adhesive at the powder outlet of the cladding nozzle, ensure the normal progress of continuous operation of underwater high-power laser deposition, and improve the deposition operation efficiency.

[0006] The technical solution adopted by the present invention is as follows:

[0007] The present application provides a device for realizing continuous operation of underwater high-power laser deposition, including a drainage cover. Inside the drainage cover, there are a cladding nozzle and an adhesive removal mechanism. The bottom of the drainage cover is open, so that the cladding nozzle can be aligned with the area to be processed. An air channel is provided in the drainage cover to drain the water in the area to be processed to generate a local dry area. The adhesive removal mechanism has a push knife with adjustable position and angle, which is used to remove the powder adhesive on the cladding nozzle during the underwater high-power deposition process. A cooling water conveying mechanism is also provided on the drainage cover to cool the cladding nozzle with the water in the working environment; and a control system is further included to control the operation of the adhesive removal mechanism according to the generation situation of the powder adhesive on the cladding nozzle.

[0008] The further technical solution is:

[0009] A cooling water channel is provided on the cladding nozzle. The structure of the cooling water conveying mechanism includes a filter, a booster pump and a water distributor. The inlet of the filter is used to connect with the water source of the working environment. The outlet of the filter is connected to the inlet of the booster pump in sequence, the outlet of the booster pump is connected to the inlet of the water distributor, and the outlet of the water distributor is connected to the inlet of the cooling water channel. The outlet of the cooling water channel is used to connect with the water source of the working environment.

[0010] The filter and the booster pump are arranged outside the drainage hood, the water separator is arranged inside the drainage hood, the outlet of the booster pump is connected to the inlet of the water separator and the outlet of the cooling water channel is connected to the water source of the working environment through hoses respectively, and through holes for the hoses to pass through are provided on the drainage hood.

[0011] The structure of the cooling water channel is: a hollow interlayer arranged circumferentially in the circumferential side wall of the cladding nozzle.

[0012] The air channels are uniformly arranged circumferentially on the side wall of the drainage hood, an air inlet pipe is provided on the upper end face of the drainage hood, its outlet is connected to the inlet of the air channel, and the outlet of the air channel is located on the lower end face of the drainage hood.

[0013] The structure of the adhesive removing mechanism is: including an installation platform rotatable around a rotating shaft, a transverse push rod mechanism is provided on the installation platform, the push knife is arranged at the output end of the transverse push rod mechanism, both ends of the rotating shaft are respectively rotatably connected to one end of a vertical push rod mechanism, and the other end of the vertical push rod mechanism is fixedly connected to the cladding nozzle; it also includes an inclined push rod mechanism, which is respectively hinged to the vertical push rod mechanism and the installation platform to drive the installation platform to rotate around the rotating shaft.

[0014] The width of the push knife is greater than the diameter of the powder outlet of the cladding nozzle.

[0015] The control system includes a control module and a high-definition waterproof camera arranged inside the drainage hood and connected to the control module, which is used to monitor the generation of powder adhesives on the cladding nozzle in real time.

[0016] This application also provides a method for realizing continuous underwater high-power laser deposition operation, including:

[0017] Adjust the working device to the normal working position, inject pressurized gas into the air channel of the drainage hood, the gas sprays out from the outlet of the air channel to form a stable high-pressure drainage air curtain, and drain the water in the area to be processed to generate a local dry area;

[0018] The cooling water conveying mechanism conveys the water in the working environment as cooling water to the cladding nozzle for cooling it;

[0019] Turn on the laser light source for loading and perform underwater high-power laser cladding operation. Monitor the generation of adhesives at the cladding nozzle in real time through the control system. When it is monitored that obvious adhesives are generated at the bottom of the cladding nozzle and may affect the processing quality, stop the laser light source loading;

[0020] Lift the working device, start the adhesive removing mechanism, and use the push knife to remove the adhesives at the bottom of the cladding nozzle;

[0021] Repeat the above steps to achieve continuous operation.

[0022] A further technical solution is as follows:

[0023] It further includes monitoring the temperature of the cladding nozzle and regulating the water inlet flow rate of the cooling water delivery mechanism according to the temperature of the cladding nozzle.

[0024] The beneficial effects of the present invention are as follows:

[0025] The present invention can perform continuous high-power laser deposition repair on the underwater damaged parts of offshore engineering equipment according to the designed device and steps, extend the service life of the cladding nozzle, ensure the forming quality and performance, shorten the operation time and reduce the operation cost, and is easy to realize mechanization and automation throughout the process. Specifically, the advantages are as follows:

[0026] (1) The present invention can realize in-situ repair of underwater damaged structural parts using high-power lasers. By designing a cladding nozzle with a water-cooling function and a cooling water delivery structure for the cladding nozzle, it effectively solves the problem of overheating of the cladding head nozzle under high-power laser conditions, reduces the thermal deformation of the cladding nozzle, and improves the laser deposition efficiency and quality.

[0027] (2) The present invention can observe the generation of adhesives at the powder outlet of the cladding nozzle in real time. By designing a cladding nozzle adhesive removal mechanism with a lifting and folding function to remove the adhesives in a timely manner, it extends the service life of the cladding nozzle, ensures the forming quality and performance, shortens the operation time and reduces the operation cost, and is easy to realize mechanization and automation throughout the process.

[0028] (3) The adhesive removal mechanism of the present invention has the functions of lifting and folding. When it is not working, it is in a folded and raised state. When it is necessary to clean the adhesives at the powder outlet of the cladding nozzle, it works by controlling the expansion of each push rod mechanism, which can effectively avoid interfering with the normal underwater high-power laser deposition operation and ensure the continuity of the laser deposition operation.

[0029] Other features and advantages of the present invention will be described in the following specification, and some of them will be obvious from the specification or understood by implementing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the working device of the present invention.

[0031] Figure 2 It is a front view of the working device of the present invention.

[0032] Figure 3 It is a three-dimensional structural schematic diagram of the cladding nozzle of the present invention.

[0033] Figure 4 It is a front view of the cladding nozzle of the present invention.

[0034] Figure 5 It isFigure 4 Cross-sectional view of the A-A section

[0035] Figure 6 Schematic installation structure diagram of the bonding material removal mechanism of the present invention

[0036] Figure 7 is Figure 6 front view

[0037] Figure 8 Schematic structure diagram of the vertical push rod mechanism of the bonding material removal mechanism of the present invention

[0038] In the figure: 1. Filter; 2. Booster pump; 3. Water separator; 4. Drain cover; 5. Cladding nozzle; 6. Vertical push rod mechanism; 7. Oblique push rod mechanism; 8. Horizontal push rod mechanism; 9. Rotating shaft; 10. Installation platform; 11. High-definition waterproof camera; 12. Cladding layer; 13. Workpiece substrate; 14. Air duct; 15. Bonding material removal mechanism

[0039] 101. Filter water inlet; 102. Filter water outlet

[0040] 201. Small booster pump water inlet; 202. Small booster pump water outlet

[0041] 301. First water outlet of the one-to-three pipeline quick connector; 302. Second water outlet of the one-to-three pipeline quick connector; 303. Water inlet of the one-to-three pipeline quick connector; 304. Third water outlet of the one-to-three pipeline quick connector

[0042] 401. Reserved hole for the cooling water inlet pipeline; 402. First reserved hole for the cooling water outlet pipeline; 403. Countersunk hole; 404. Air inlet pipe; 405. Second reserved hole for the cooling water outlet pipeline; 406. Third reserved hole for the cooling water outlet pipeline

[0043] 501. First cooling water inlet pipe; 502. First cooling water outlet pipe; 503. Second cooling water outlet pipe; 504. Through hole one; 505. Through hole two; 506. Third cooling water outlet pipe; 507. Second cooling water inlet pipe; 508. Third cooling water inlet pipe; 509. Cooling water channel

[0044] 601. Vertical push rod servo motor; 602. Vertical push rod electric cylinder; 603. Vertical push rod telescopic rod

[0045] 701. Oblique push rod servo motor; 702. Oblique push rod electric cylinder; 703. Oblique push rod telescopic rod

[0046] 801. Horizontal push rod servo motor; 802. Horizontal push rod electric cylinder; 803. Horizontal push rod telescopic rod; 804. Pushing knife Detailed implementation mode

[0047] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0048] As Figure 1 shown, an embodiment of the present application provides a device for realizing continuous underwater high-power laser deposition operation, including a drainage hood 4. Inside the drainage hood 4, there are a cladding nozzle 5 and an adhesive removal mechanism 15. The bottom of the drainage hood 4 is open, so that the cladding nozzle 5 can be aligned with the area to be processed. An air duct 14 is provided in the drainage hood 4 for discharging the water in the area to be processed to generate a local dry area. The adhesive removal mechanism 15 has a push knife 804 with adjustable position and angle, which is used to remove the powder adhesive of the cladding nozzle 5 during underwater high-power deposition. A cooling water delivery mechanism is also provided on the drainage hood 4 for cooling the cladding nozzle 5 with the water in the working environment; and a control system is further included for controlling the operation of the adhesive removal mechanism 15 according to the generation situation of the powder adhesive of the cladding nozzle 5.

[0049] As Figure 1 shown, the structure of the cooling water delivery mechanism includes a filter 1, a booster pump 2 and a water distributor 3. The inlet of the filter 1 is used to connect with the water source of the working environment. The outlet of the filter 1 is connected to the inlet of the booster pump 2 in sequence, the outlet of the booster pump 2 is connected to the inlet of the water distributor 3, and the outlet of the water distributor 3 is connected to the inlet of the cooling water channel 509 in the cladding nozzle 5. The outlet of the cooling water channel 509 is used to connect with the water source of the working environment.

[0050] As Figures 3 to 5 shown, the structure of the cooling water channel 509 is: a hollow interlayer arranged along the circumferential direction in the circumferential side wall of the cladding nozzle 5. At the bottom of the cladding nozzle 5, there are a first cooling water inlet pipe 501, a second cooling water inlet pipe 507 and a third cooling water inlet pipe 508. At the top, there are a first cooling water outlet pipe 502, a second cooling water outlet pipe 503 and a third cooling water outlet pipe 506. Each inlet pipe and outlet pipe are respectively connected through the cooling water channel 509. After the cooling water enters the cooling water channel 509 through three cooling water inlet pipelines to cool the cladding nozzle, it flows out through three cooling water outlet pipelines, realizing the overall cooling of the laser cladding nozzle.

[0051] Specifically, the adhesive removal mechanism 15 and the cladding nozzle 5 are fixedly connected by fastening bolts through a first through hole 504 and a second through hole 505.

[0052] The water distributor 3 can specifically adopt a one-to-three quick connector.

[0053] As Figure 1 and Figure 2As shown, the filter 1 and the booster pump 2 are arranged outside the drainage cover 4, the water distributor 3 is arranged inside the drainage cover 4, the outlet of the booster pump 2 is connected to the inlet of the water distributor 3 through a hose, and the outlet of the cooling water channel 509 is connected to the water source of the working environment through a hose respectively. There is a through hole on the drainage cover 4 for the hose to pass through.

[0054] Specifically, the water in the working environment enters the filter 1 through the filter water inlet 101 under the action of the booster pump 2, enters the small booster pump water inlet 201 through the filter water outlet 102, and enters the tee pipeline quick connector water inlet 303 through the small booster pump water outlet 202 and the connecting hose. It respectively enters the first cooling water inlet pipe 501, the second cooling water inlet pipe 507 and the third cooling water inlet pipe 508 through the first outlet 301 of the tee pipeline quick connector, the second outlet 302 of the tee pipeline quick connector and the third outlet 304 of the tee pipeline quick connector through the connecting hose. After cooling the cladding nozzle 5, it is discharged through the first cooling water outlet pipe 502, the second cooling water outlet pipe 503 and the third cooling water outlet pipe 506 respectively, and hoses are externally connected to the first cooling water outlet pipe 502, the second cooling water outlet pipe 503 and the third cooling water outlet pipe 506 respectively.

[0055] Specifically, the top of the drainage cover 4 is provided with a reserved hole 401 for the cooling water inlet pipeline, a first reserved hole 402 for the cooling water outlet pipeline, several counterbore holes 403, several drainage air inlet pipes 404, a second reserved hole 405 for the cooling water outlet pipeline, and a third reserved hole 406 for the cooling water outlet pipeline.

[0056] The connecting hose between the small booster pump water outlet 202 and the tee pipeline quick connector water inlet 303 passes through the reserved hole 401 for the cooling water inlet pipeline on the drainage cover 4, and the hoses externally connected to the first cooling water outlet pipe 502, the second cooling water outlet pipe 503 and the third cooling water outlet pipe 506 pass through the first reserved hole 402 for the cooling water outlet pipeline, the second reserved hole 405 for the cooling water outlet pipeline and the third reserved hole 406 for the cooling water outlet pipeline on the drainage cover 4 respectively, and the cooling water is directly discharged into the water environment.

[0057] Specifically, the drainage cover 4 is bolted to the cladding nozzle 5 through the counterbore holes 403.

[0058] As Figure 1 shown, the air channels 14 are uniformly arranged on the side wall of the drainage cover 4 in the circumferential direction. The upper end surface of the drainage cover 4 is provided with an air inlet pipe 404, the outlet of which is connected to the inlet of the air channel 14, and the outlet of the air channel 14 is located on the lower end surface of the drainage cover 4. The air channel 14 is inflated through the air inlet pipe 404 to form a drainage air curtain around the exhaust cover 4.

[0059] As Figure 1 and Figure 6As shown in the figure, the structure of the adhesive removal mechanism 15 is as follows: It includes an installation platform 10 that can rotate around a rotating shaft 9. A transverse push rod mechanism 8 is provided on the installation platform 10. A push knife 804 is arranged at the output end of the transverse push rod mechanism 8. Both ends of the rotating shaft 9 are respectively rotatably connected to one end of a vertical push rod mechanism 6, and the other end of the vertical push rod mechanism 6 is fixedly connected to the cladding nozzle 5. It also includes an inclined push rod mechanism 7, which is respectively connected to the vertical push rod mechanism 6 and the installation platform 10, and drives the installation platform 10 to rotate around the rotating shaft 9.

[0060] Specifically, the vertical push rod mechanisms 6 are symmetrically arranged. The structure of each vertical push rod mechanism 6 includes a vertical push rod servo motor 601, a vertical push rod electric cylinder 602, and a vertical push rod telescopic rod 603. The output end of the vertical push rod servo motor 601 is power-connected to the input end of the screw in the vertical push rod electric cylinder 602. The vertical push rod telescopic rod 603 is fixedly connected to the nut screwed on the screw, realizing a linear contraction movement in the vertical direction. A circular through-hole is opened at the bottom of the vertical push rod telescopic rod 603 for connecting with the rotating shaft 9, and the rotating shaft 9 passes through the through-hole at the tail of the installation platform 10.

[0061] Specifically, the inclined push rod mechanisms 7 are also symmetrically arranged. The structure of each inclined push rod mechanism 7 includes an inclined push rod servo motor 701, an inclined push rod electric cylinder 702, and an inclined push rod telescopic rod 703. The output end of the inclined push rod servo motor 701 is power-connected to the input end of the screw in the inclined push rod electric cylinder 702. The inclined push rod telescopic rod 703 is fixedly connected to the nut screwed on the screw, realizing a linear contraction movement in the inclined direction. The top of the inclined push rod electric cylinder 702 is hinged to the vertical push rod telescopic rod 603, and the end of the inclined push rod telescopic rod 703 is hinged to the installation platform 10, realizing the folding of the installation platform 10 under the drive of the inclined push rod servo motor 701.

[0062] Specifically, as Figure 7 shown in the figure, the structure of the transverse push rod mechanism 8 includes a transverse push rod servo motor 801, a transverse push rod electric cylinder 802, and a transverse push rod telescopic rod 803. The output end of the transverse push rod servo motor 801 is power-connected to the input end of the screw in the transverse push rod electric cylinder 802. The transverse push rod telescopic rod 803 is fixedly connected to the nut screwed on the screw, realizing a linear contraction movement in the transverse direction. The push knife 804 is installed at the end of the transverse push rod telescopic rod 803. Preferably, the width of the push knife 804 should be slightly larger than the diameter of the powder outlet of the cladding nozzle. Under the drive of the transverse push rod servo motor 801, the removal of the adhesive at the cladding nozzle is realized.

[0063] Specifically, as Figure 8 shown in the figure, the top of the vertical push rod mechanism 6 is provided with a mounting hole for fixedly connecting with the cladding nozzle 5.

[0064] As Figure 1As shown in the figure, the control system includes a control module and a high-definition waterproof camera 11 disposed in the drainage hood 4 and connected to the control module, which is used to monitor the generation of powder adhesives on the cladding nozzle 5 in real time.

[0065] The underwater high-power laser deposition continuous operation device of the embodiment of the present application uses a cooling water delivery mechanism to use the water in the environment as cooling water to cool the cladding nozzle with water-cooling function, uses an adhesive removal mechanism to remove the powder adhesives during the underwater high-power deposition process, uses a drainage hood to drain the water in the area to be processed to create a local dry area, and a high-definition waterproof camera is installed at the bottom of the inner wall for real-time monitoring of the generation of adhesives on the cladding nozzle. It can perform continuous operation of high-power laser deposition repair on the underwater damaged parts of offshore engineering equipment according to the designed device and steps, extend the service life of the cladding nozzle, ensure the forming quality and performance, shorten the operation time and reduce the operation cost, and it is easy to realize mechanization and automation throughout the process.

[0066] The embodiment of the present application also provides a method for realizing underwater high-power laser deposition continuous operation, including:

[0067] Adjust the operation device to the normal working position so that it is above the working substrate 13, inject pressurized gas into the air duct 14 of the drainage hood 4, and the gas sprays out from the outlet of the air duct 14 to form a stable high-pressure drainage air curtain to drain the water in the area to be processed to create a local dry area;

[0068] The cooling water delivery mechanism transports the water in the operation environment as cooling water to the cladding nozzle 5 to cool it;

[0069] Turn on the laser light source loading to perform underwater high-power laser cladding operation, form a cladding layer 12 on the working substrate 13, and monitor the generation of adhesives at the cladding nozzle 5 in real time through the control system. When it is monitored that obvious adhesives are generated at the bottom of the cladding nozzle 5 and may affect the processing quality, stop the laser light source loading;

[0070] Lift the operation device, start the adhesive removal mechanism 15, and use the push knife 804 to remove the adhesives at the bottom of the cladding nozzle 5;

[0071] Repeat the above steps to realize the continuous operation of underwater high-power laser deposition repair or remanufacturing work.

[0072] Specifically, the working process of the adhesive removal mechanism 15 includes:

[0073] After the vertical push rod servo motor 601 is powered on and the vertical push rod telescopic rod 603 makes an extending motion to lower the installation platform 10 by an appropriate distance, the inclined push rod servo motor 701 is powered on, and the inclined push rod telescopic rod 703 makes an extending motion to drive the installation platform 10 to rotate around the rotating shaft 9 to a horizontal state. The vertical push rod telescopic rod 603 is finely adjusted so that the top of the push knife 804 and the powder outlet of the cladding nozzle are basically in the same plane. Then the horizontal push rod servo motor 801 is powered on, and the horizontal push rod telescopic rod 803 drives the push knife 804 to extend forward until the adhesive at the powder outlet of the cladding nozzle 5 is pushed out.

[0074] After the push knife 804 pushes out the adhesive at the powder outlet of the cladding nozzle, the horizontal push rod servo motor 801 is powered on, and the horizontal push rod telescopic rod 803 contracts to a suitable position. Then the inclined push rod servo motor 701 is controlled to be powered on, and the inclined push rod telescopic rod 703 makes a contracting motion to drive the installation platform 10 to rotate around the rotating shaft 9 to a suitable angle to fold it.

[0075] The vertical push rod servo motor 601 is controlled to be powered on, and the vertical push rod telescopic rod 603 makes a contracting motion until its lowest point is not lower than the plane where the powder outlet of the cladding nozzle is located, so as to avoid the interference of the adhesive removal mechanism of the cladding nozzle on the normal processing process.

[0076] Specifically, the water inlet flow rate of the cooling water conveying mechanism (the water inlet of the small booster pump 201) is regulated according to the temperature of the cladding nozzle 5. The water inlet flow rate and the temperature have a linear dynamic relationship, which effectively cools the cladding nozzle 5 and avoids high-temperature deformation and the generation of adhesives on the cladding nozzle 5.

[0077] Those of ordinary skill in the art can understand that the above description is only a preferred embodiment of the present invention and is not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An underwater high-power laser deposition continuous operation device, characterized in that It includes a drainage cover (4). Inside the drainage cover (4), there are a cladding nozzle (5) and an adhesive removal mechanism (15). The bottom of the drainage cover (4) is open, enabling the cladding nozzle (5) to be aligned with the area to be processed. An air duct (14) is provided in the drainage cover (4) to drain the water in the area to be processed and create a local dry area. The adhesive removal mechanism (15) has a push knife (804) with adjustable position and angle, which is used to remove the powder adhesive on the cladding nozzle (5) during the underwater high-power deposition process. A cooling water conveying mechanism is also provided on the drainage cover (4) to cool the cladding nozzle (5) with the water in the working environment. It also includes a control system for controlling the operation of the adhesive removal mechanism (15) according to the generation situation of the powder adhesive on the cladding nozzle (5). The structure of the adhesive removal mechanism (15) is as follows: It includes a mounting platform (10) that can rotate around a rotating shaft (9). A transverse push rod mechanism (8) is provided on the mounting platform (10). The push knife (804) is arranged at the output end of the transverse push rod mechanism (8). Both ends of the rotating shaft (9) are respectively rotatably connected to one end of a vertical push rod mechanism (6), and the other end of the vertical push rod mechanism (6) is fixedly connected to the cladding nozzle (5). It also includes an inclined push rod mechanism (7) that is respectively hinged to the vertical push rod mechanism (6) and the mounting platform (10) to drive the mounting platform (10) to rotate around the rotating shaft (9).

2. The underwater high-power laser deposition continuous operation device according to claim 1, wherein A cooling water channel (509) is provided in the cladding nozzle (5). The structure of the cooling water conveying mechanism includes a filter (1), a booster pump (2), and a water distributor (3). The inlet of the filter (1) is used to connect to the water source in the working environment. The outlet of the filter (1) is connected to the inlet of the booster pump (2) in sequence, the outlet of the booster pump (2) is connected to the inlet of the water distributor (3), and the outlet of the water distributor (3) is connected to the inlet of the cooling water channel (509). The outlet of the cooling water channel (509) is used to connect to the water source in the working environment.

3. The underwater high-power laser deposition continuous operation device according to claim 2, wherein The filter (1) and the booster pump (2) are arranged outside the drainage cover (4), and the water distributor (3) is arranged inside the drainage cover (4). The outlet of the booster pump (2) is connected to the inlet of the water distributor (3) and the outlet of the cooling water channel (509) is connected to the water source in the working environment respectively through hoses. Through holes are provided on the drainage cover (4) for the hoses to pass through.

4. The underwater high-power laser deposition continuous operation device according to claim 2, characterized in that The structure of the cooling water channel (509) is a hollow interlayer arranged circumferentially in the circumferential side wall of the cladding nozzle (5).

5. The underwater high-power laser deposition continuous operation device according to claim 1, wherein, The air ducts (14) are uniformly arranged along the circumferential direction on the side wall of the drainage cover (4). An air inlet pipe (404) is provided on the upper end surface of the drainage cover (4), and its outlet is connected to the inlet of the air duct (14). The outlet of the air duct (14) is located on the lower end surface of the drainage cover (4).

6. The underwater high-power laser deposition continuous operation device according to claim 1, wherein The width of the push knife (804) is greater than the diameter of the powder outlet of the cladding nozzle (5).

7. The underwater high-power laser deposition continuous operation device according to claim 1, wherein The control system includes a control module and a high-definition waterproof camera (11) disposed in the drainage hood (4) and connected to the control module, which is used to monitor the generation of powder adhesives on the cladding nozzle (5) in real time.

8. A working method of the underwater high-power laser deposition continuous working device according to any one of claims 1 to 7, characterized in that, Including: Adjust the working device to the normal working position, inject pressurized gas into the air duct (14) of the drainage hood (4), and the gas sprays out from the outlet of the air duct (14) to form a stable high-pressure drainage air curtain to drain the water in the area to be processed and create a local dry area. The cooling water delivery mechanism delivers the water in the working environment as cooling water to the cladding nozzle (5) for cooling. Turn on the laser light source loading and perform underwater high-power laser cladding operations. Monitor the generation of adhesives at the cladding nozzle (5) in real time through the control system. When it is monitored that obvious adhesives are generated at the bottom of the cladding nozzle (5) and may affect the processing quality, stop the laser light source loading. Lift the working device, start the adhesive removal mechanism (15), and use the push knife (804) to remove the adhesives at the bottom of the cladding nozzle (5). Repeat the above steps to achieve continuous operation.

9. The operation method according to claim 8, wherein, Also including: Monitor the temperature of the cladding nozzle (5) and regulate the water inlet flow rate of the cooling water delivery mechanism according to the temperature of the cladding nozzle (5).

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