Marine engineering structure corrosion image acquisition device

Abstract

This invention discloses a marine engineering structure corrosion image acquisition device, relating to the field of engineering inspection. The device includes a propulsion unit, a collision avoidance device, a sonar sensor, a camera, and a data processing unit. The invention can obtain clear corrosion images of marine engineering structures through the sonar sensor, camera, and data processing unit. The collision avoidance device protects the camera, reducing impact and wear. Furthermore, the invention provides a propulsion unit with a more easily controllable propeller that reduces water flow interference, resulting in clearer images and improved environmental safety.

Description

Technical Field

[0001] This invention belongs to the field of engineering inspection, and specifically relates to a device for acquiring images of corrosion of marine engineering structures. Background Technology

[0002] The description in this section provides only background information relevant to the disclosure of this application and does not constitute prior art.

[0003] Metallic materials are widely used due to their excellent physical, chemical, and mechanical properties. However, exposure to complex and diverse environments leads to the gradual formation of corrosion. Corrosion damage not only thins the metal layer but also alters the mechanical properties of the metal structure, ultimately damaging equipment and causing safety accidents. Statistics show that corrosion-related losses in my country account for approximately 5% of the country's GDP annually. Therefore, it is crucial to monitor the corrosion status of engineering structures in a timely manner to implement effective corrosion protection.

[0004] Prior art, such as application number KR1020120087721, entitled "APPARARTUS AND METHOD FORGENERATING AN AROUND VIEW OF A REMOTELY OPERATED VEHICLE," relates to an underwater robot imaging device, specifically a device for generating images of the underwater robot's surroundings. This device, mounted on the underwater robot, includes a sonar sensor, a video camera, and a data processing device. The invention acquires images of the underwater robot's surroundings based on the imaging device and sonar sensor mounted on the robot. By imaging the images acquired by the imaging device from the three-dimensional position information detected by the underwater robot's sonar sensor, and through matching, three-dimensional video information can be generated.

[0005] Currently, commonly used methods for assessing the corrosion state of metals include manual inspection, field imaging, non-destructive testing methods such as laser holography and X-rays, and electrochemical impedance spectroscopy and noise analysis. Manual inspection relies on personal experience to describe the corrosion morphology and determine the corrosion level, but due to significant subjective differences, a lack of standardized criteria, high labor intensity, low efficiency, and relatively crude detection results, it is ineffective. Field imaging involves welding probes or electrodes to the outside of the pipeline or container under test in a matrix arrangement, then measuring minute changes in the electric field passing through the metal structure. However, the significant electromagnetic noise at substation sites hinders its effectiveness. X-rays and lasers are costly and require demanding testing environments, limiting their applicability. Electrochemical impedance spectroscopy and noise analysis require sampling and stable testing conditions, and data analysis demands a high level of expertise from the testing personnel. In conclusion, improving the efficiency and accuracy of corrosion detection on engineering structures remains a pressing issue.

[0006] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Summary of the Invention

[0007] The purpose of this invention is to provide a marine engineering structure corrosion image acquisition device, which can obtain clear images of marine engineering structure corrosion. This image acquisition device can also improve environmental safety, reduce water flow interference, and reduce the impact and wear on the camera device.

[0008] The technical solution adopted by the present invention to achieve the above objectives is as follows:

[0009] A marine engineering structure corrosion image acquisition device includes: a frame; the frame includes an upper frame, a lower frame, and four vertical columns connecting the upper and lower frames; a sonar sensor, a data processing device, and a propulsion device are installed between the upper and lower frames; a camera device is installed around each of the four sides of the upper frame; a lighting device is installed on each side of each camera device; and a collision protection device is installed above each camera device to protect the camera; the collision protection device includes an elastic energy dissipation structure; the elastic energy dissipation structure includes a spring sheet structure and a collision protection beam.

[0010] This invention provides a marine engineering structure corrosion image acquisition device. This device can obtain clear images of marine engineering structure corrosion through a sonar sensor, a camera device, and a data processing device. This invention also provides an anti-collision device to protect the camera device and reduce the impact and wear on the camera during the acquisition of marine engineering structure corrosion images. In addition, the propulsion device provided by this invention is easier to control and can reduce the interference of water flow, enabling the camera device to obtain clearer images during the shooting process.

[0011] According to a specific embodiment of the present invention, the above-mentioned camera device is used to capture images of the structure; the above-mentioned lighting device can provide illumination for the shooting area of ​​each corresponding camera device; the above-mentioned sonar sensor is used to detect the three-dimensional position information image of the marine engineering structure; the above-mentioned data processing device performs matching processing on the image data acquired by the camera device in the three-dimensional position information detected by the sonar sensor to generate three-dimensional image information.

[0012] According to a specific embodiment of the present invention, the propulsion device includes a propeller, which is driven by a drive device. The propeller includes an enclosing ring, fins, and a hub. The fins are uniformly distributed within the enclosing ring around the hub. The hub is provided with uniformly distributed small blades in the circumferential direction.

[0013] According to a specific embodiment of the present invention, the aforementioned surrounding ring is fixed around the hub, the surrounding ring includes one or more concentric rings, the spacing between adjacent concentric rings is the same, and fins are uniformly distributed around the adjacent concentric rings; fins are also uniformly distributed around the hub and the adjacent concentric rings.

[0014] This invention provides a propulsion device whose propeller is easier to control and pushes small marine organisms that might approach the propulsion device structure away from the system, significantly improving the environmental safety of the propulsion device. Furthermore, because the surrounding rings of the propeller are fixed around the hub, and fins are evenly distributed around adjacent surrounding rings, the propeller's resistance is reduced, allowing it to rotate more easily. Large rotational torque is transmitted to the drive shaft with less resistance and loss, thus allowing the propeller to rotate very slowly. The uniform pressure distribution on the propeller fins ensures smooth water flow, reducing cavitation and erosion damage, and minimizing vertical sway of the device. Additionally, because the propeller reduces or eliminates suspended sediment in the water flow under smooth water conditions, it reduces water flow interference around the camera equipment and data acquisition devices, improving the clarity of the images acquired by the camera.

[0015] According to a specific embodiment of the present invention, the above-mentioned anti-collision device further includes a housing; the housing is a hollow structure; the upper and lower shells of the housing are connected by a V-shaped connector; and the housing contains an elastic energy dissipation structure.

[0016] According to a specific embodiment of the present invention, the above-mentioned spring structure includes a fixing plate, the fixing plate being connected to one end of a support plate via a bent edge a, the other end of the support plate being connected to one end of a connecting arm a via a bent edge b; the other end of the connecting arm a being connected to one end of the connecting arm b via a bent edge c; the other end of the connecting arm b being connected to one end of the connecting arm c via a bent edge d; the other end of the connecting arm c being connected to one end of the connecting arm d via a bent edge e; and the other end of the connecting arm d being connected to the connecting arm e via a bent edge f.

[0017] According to a specific embodiment of the present invention, the above-mentioned anti-collision beam has a large triangular hole in the middle; small triangular holes are interspersed between the large triangular holes; there is a groove between the small triangular holes and the top plate of the anti-collision beam; the above-mentioned spring sheet structure is fixed to the top plate of the anti-collision beam by a fixing plate; the elastic energy dissipation structure composed of the above-mentioned spring sheet structure and the anti-collision beam is located between the V-shaped connectors on both sides of the outer shell.

[0018] This invention also provides an anti-collision structure that reduces the impact and wear of collisions on the camera device in the acquisition device, achieving the effects of water diversion and force dispersion, resulting in excellent anti-collision performance of the underwater robot camera device. Furthermore, the elastic structure of the anti-bullet plate and the impact beam prevents irreversible deformation caused by overpressure. In addition, the hollow structure of the anti-collision device weakens the intensity of turbulence. This is likely because the smaller mesh openings on the anti-collision device promote a more uniform distribution of the average velocity downstream, reducing mutual disturbance between water flows and lowering the intensity of turbulence. Since the intensity of the light beam decreases after passing through turbulence, and the increased transmission distance of light in turbulence causes the light to deviate further from its ideal trajectory, the light beam becomes deformed. Therefore, the reduction in turbulence intensity can reduce the chromatic aberration and distortion of light in the water, thereby improving the stability of the image acquisition device and the clarity of the captured images.

[0019] According to a specific embodiment of the present invention, the upper frame further includes a buoyancy adjustment device; the buoyancy adjustment device includes a piston and a cylinder, the piston dividing the cylinder into a water chamber and an air chamber; the water chamber is divided into chamber A and chamber B; the volume ratio of seawater in chamber A to air in the air chamber is determined.

[0020] According to a specific embodiment of the present invention, one end of the piston shaft is connected to the upper surface of the piston, and the other end of the piston shaft is disposed outside the cylinder and connected to the drive shaft, which is driven by a drive motor through a reducer.

[0021] According to a specific embodiment of the present invention, the above-mentioned buoyancy adjustment device has two sets of sealed parts: air chamber 321 and chamber A.

[0022] According to a specific embodiment of the present invention, the lower surface of the piston is connected to one end of the telescopic tube, and the other end of the telescopic tube is connected to the cylinder through a sealing device; this can prevent seawater from invading from chamber B in the water chamber into chamber A; the telescopic tube is a flexible component.

[0023] This invention provides a buoyancy adjustment device with two sets of sealing parts and a double-layer structure in the telescopic tube, which further ensures the required water tightness and air tightness, continuously provides the required buoyancy, and can withstand long-term operation. In addition, the buoyancy adjustment device can consume water flow energy during operation, reduce the impact force of water flow, reduce the shaking of the image acquisition device, and improve the stability of the camera device, resulting in clearer images.

[0024] The beneficial effects of this invention include:

[0025] This invention provides a marine engineering structure corrosion image acquisition device, which includes a propulsion device, a collision avoidance device, a sonar sensor, a camera device, and a data processing device. The sonar sensor, camera device, and data processing device can obtain clear images of marine engineering structure corrosion. The collision avoidance device protects the camera device, reducing impact and wear. Furthermore, this invention provides a propulsion device whose propeller rotates more easily and reduces water flow interference, resulting in clearer images for the camera device and improving environmental safety.

[0026] Therefore, the present invention provides a marine engineering structure corrosion image acquisition device, which can obtain clear images of marine engineering structure corrosion. The image acquisition device can also improve environmental safety, reduce water flow interference, and reduce the impact and wear on the camera device. Attached Figure Description

[0027] Figure 1 Schematic diagram of a marine engineering structure corrosion image acquisition device;

[0028] Figure 2 This is a schematic diagram of a buoyancy adjustment device;

[0029] Figure 3 This is a schematic diagram of the anti-collision device;

[0030] Figure 4 This is a schematic diagram of the spring clip structure;

[0031] Figure 5 This is a schematic diagram of a crash beam.

[0032] Figure 6 This is a schematic diagram of a propeller.

[0033] Icon labels:

[0034] Frame 1, Upper Frame 101, Lower Frame 102, Vertical Column 103, Sonar Sensor 2, Data Processing Device 4, Drive Device 5, Anti-collision Device 6, Propeller 7, Camera Device 8, Lighting Device 9, Drive Motor 302, Reducer 303, Sealing Device 304, Drive Shaft 305, Piston 306, Telescopic Tube 307, Cylinder 308, Piston Shaft 309, Air Chamber 321, Water Chamber 322, Outer Shell 601, V-Connector 602, Spring Structure 603, Anti-collision Beam 604, Fixing Plate 610, Bending Edge a 611, Bending Edge b 613, Bending Edge c 615, Bending Edge d 617, Bending Edge e 619, Bending Edge f 621, Support Plate 612, Connecting Arm a 614, Connecting Arm b 616, Connecting Arm c 618, Connecting Arm d 620, Connecting Arm e 622, large triangular hole 631, small triangular hole 632, recess 633, anti-collision beam top plate 634, surround ring 701, fin 702, wheel hub 703, small blade 704. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be further described in detail below with reference to specific embodiments:

[0036] Example 1:

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a marine engineering structure corrosion image acquisition device includes: a frame 1; the frame 1 includes an upper frame 101, a lower frame 102, and four vertical columns 103 connecting the upper and lower frames; a sonar sensor 2, a data processing device 4, and a propulsion device are installed between the upper frame 101 and the lower frame 102; a camera device 8 is installed around each of the four sides of the upper frame 101; a lighting device 9 is installed on each side of each camera device 8; and an anti-collision device 6 is installed above each camera device 8 to protect the camera; the anti-collision device 6 includes an elastic energy dissipation structure; the elastic energy dissipation structure includes a spring sheet structure 603 and an anti-collision beam 604.

[0038] The marine engineering structure corrosion image acquisition device can obtain clear images of marine engineering structure corrosion through sonar sensor 2, camera device 8 and data processing device 4. The anti-collision device 6 can be used to protect the camera device 8 and reduce the impact and wear on the camera during the acquisition of marine engineering structure corrosion images. In addition, the propulsion device provided by the present invention is easier to rotate and can reduce the interference of water flow, so that the camera device 8 can obtain clearer images during the shooting process.

[0039] The camera device 8 is used to capture images of marine engineering structures; the lighting device 9 can provide illumination for the shooting areas of each corresponding camera device 8; the sonar sensor 2 is used to detect the three-dimensional position information images of marine engineering structures; the data processing device 4 performs matching processing on the image data acquired by the camera device 8 in the three-dimensional position information detected by the sonar sensor 2 to generate three-dimensional image information.

[0040] The propulsion device includes a propeller 7, which is driven by a drive device 5. The propeller 7 includes an enclosing ring 701, fins 702 and a hub 703. The fins 702 are evenly distributed in the enclosing ring 701 around the hub 703. Small blades 704 are evenly distributed in the circumferential direction of the hub 703.

[0041] The surrounding ring 701 is fixed around the hub 703. The surrounding ring 701 includes one or more concentric rings with the same spacing between adjacent concentric rings. Fins 702 are evenly distributed around adjacent concentric rings. Fins 702 are also evenly distributed around the hub 703 and adjacent concentric rings.

[0042] The propeller 7 of the propulsion device is easier to control and pushes small marine organisms that might approach the propulsion device structure away from the system, greatly improving the environmental safety of the propulsion device. Furthermore, because the surrounding rings of the propeller 7 are fixed around the hub 703, and fins 702 are evenly distributed around adjacent surrounding rings, the drag of the propeller 7 is reduced, allowing it to rotate more easily. Large rotational torque is transmitted to the drive shaft with less resistance and loss, so the propeller 7 can also rotate very slowly. The uniform pressure distribution on the fins 702 of the propeller 7 results in smooth water flow, reducing cavitation and erosion damage, and also reducing vertical sway of the device. In addition, because the propeller 7 reduces or eliminates suspended sediment in the water flow when the water flow is smooth, it reduces water flow interference around the camera equipment and data acquisition equipment, improving the clarity of the images acquired by the camera device 8.

[0043] The anti-collision device 6 also includes a housing 601; the housing 601 is a hollow structure; the upper and lower housings of the housing 601 are connected by a V-shaped connector 602; the housing 601 contains an elastic energy dissipation structure.

[0044] The spring clip structure 603 includes a fixing plate 610, which is connected to one end of a support plate 612 via a bent edge a 611. The other end of the support plate 612 is connected to one end of a connecting arm a 614 via a bent edge b 613. The other end of the connecting arm a 614 is connected to one end of a connecting arm b 616 via a bent edge c 615. The other end of the connecting arm b 616 is connected to one end of a connecting arm c 618 via a bent edge d 617. The other end of the connecting arm c 618 is connected to one end of a connecting arm d 620 via a bent edge e 619. The other end of the connecting arm d 620 is connected to a connecting arm e 622 via a bent edge f 621.

[0045] The anti-collision beam 604 has a large triangular hole 631 in the middle; small triangular holes 632 are interspersed between the large triangular holes 631; there is a groove 633 between the small triangular holes 632 and the top plate 634 of the anti-collision beam; the spring sheet structure 603 is fixed to the top plate 634 of the anti-collision beam by a fixing plate; the elastic energy dissipation structure composed of the spring sheet structure 603 and the anti-collision beam 604 is located between the V-shaped connectors 602 on both sides of the shell.

[0046] The anti-collision structure in the anti-collision device 6 can reduce the impact and wear of collisions on the camera device 8 in the image acquisition device, achieving the effects of water flow and force dispersion, resulting in excellent anti-collision performance of the underwater robot camera device 8. Furthermore, the elastic structure of the spring sheet 603 and the anti-collision beam 604 avoids irreversible deformation caused by overpressure. In addition, the anti-collision device 6 is a hollow structure, which weakens the intensity of turbulence. This may be because the smaller mesh pores on the anti-collision device 6 can promote a more uniform distribution of the average velocity downstream, reduce the mutual disturbance between water flows, and reduce the intensity of turbulence. Since the intensity of the light beam decreases after passing through turbulence, and the light travels a greater distance in turbulence, the light beam deviates more and more from the ideal light trajectory, and the light beam is deformed. Therefore, the reduction of turbulence intensity can reduce the chromatic aberration and distortion of light in the water, thereby improving the stability of the image acquisition device and the clarity of the image during shooting.

[0047] The upper frame 101 also contains a buoyancy adjustment device; the buoyancy adjustment device includes a piston 306 and a cylinder 308, the piston 306 divides the cylinder 308 into a water chamber 322 and an air chamber 321; the water chamber 322 is divided into chamber A and chamber B; the volume ratio of seawater in chamber A to air in chamber 321 is determined.

[0048] One end of the piston shaft 309 is connected to the upper surface of the piston 306. The other end of the piston shaft 309 is located outside the cylinder 308 and is connected to the drive shaft 305. The drive shaft 305 is driven by the drive motor 302 through the reducer 303.

[0049] The buoyancy adjustment device has two sets of sealed parts: air chamber 321 and chamber A.

[0050] The lower surface of piston 306 is connected to one end of telescopic tube 307, and the other end of telescopic tube 307 is connected to cylinder 308 through sealing device 304; it can prevent seawater from invading from chamber B in water chamber 322 into chamber A; telescopic tube 307 is a flexible component.

[0051] The buoyancy adjustment device has two sets of sealing parts, and the telescopic tube 307 in the buoyancy adjustment device has a double-layer structure, which can further ensure the required water tightness and air tightness, continuously provide the required buoyancy, and the buoyancy adjustment device can withstand long-term operation; in addition, the buoyancy adjustment device can consume water flow energy during operation, reduce the impact force of water flow, reduce the shaking of the image acquisition device, and improve the stability of the camera device 8, making the captured image clearer.

[0052] The conventional techniques described in the above embodiments are existing technologies known to those skilled in the art, and therefore will not be described in detail here.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for acquiring images of corrosion of marine engineering structures, comprising: Frame (1); The frame (1) includes an upper frame (101), a lower frame (102) and four vertical columns (103) connecting the upper and lower frames; A sonar sensor (2), a data processing device (4) and a propulsion device are installed between the upper frame (101) and the lower frame (102); A camera device (8) is installed around each of the four sides of the upper frame (101); A lighting device (9) is installed on each side of each camera device (8); A collision protection device (6) is installed above each camera device (8) to protect the camera; The collision protection device (6) includes an elastic energy dissipation structure; The elastic energy dissipation structure includes a spring sheet structure (603) and a collision protection beam (604); The spring structure (603) includes a fixing plate (610), which is connected to one end of a support plate (612) via a bent edge a (611). The other end of the support plate (612) is connected to one end of a connecting arm a (614) via a bent edge b (613). The other end of the connecting arm a (614) is connected to one end of a connecting arm b (616) via a bent edge c (615). The other end of the connecting arm b (616) is connected to one end of a connecting arm c (618) via a bent edge d (617). The other end of the connecting arm c (618) is connected to one end of a connecting arm d (620) via a bent edge e (619). The other end of the connecting arm d (620) is connected to the connecting arm e (622) via a bent edge f (621). The anti-collision device (6) is a hollow structure, which can reduce the intensity of turbulence to reduce the chromatic aberration and distortion amplitude of light in the water.

2. The marine engineering structure corrosion image acquisition device according to claim 1, characterized in that: The camera device (8) is used to capture images of the structure; the lighting device (9) can provide lighting for the shooting area of ​​each corresponding camera device (8); the sonar sensor (2) is used to detect the three-dimensional position information image of the marine engineering structure; the data processing device (4) performs matching processing on the image data obtained by the camera device (8) in the three-dimensional position information detected by the sonar sensor (2) to generate three-dimensional image information.

3. The marine engineering structure corrosion image acquisition device according to claim 1, characterized in that: The propulsion device includes a propeller (7), which is driven by a drive device (5). The propeller (7) includes an enclosing ring (701), fins (702) and a hub (703). The fins (702) are evenly distributed around the hub (703) within the enclosing ring (701). The hub (703) is provided with evenly distributed small blades (704) in the circumferential direction.

4. The marine engineering structure corrosion image acquisition device according to claim 3, characterized in that: The surrounding ring (701) is fixed around the hub (703). The surrounding ring (701) includes one or more concentric rings with the same spacing between adjacent concentric rings. Fins (702) are evenly distributed around the adjacent concentric rings. Fins (702) are also evenly distributed around the hub (703) and the adjacent concentric rings.

5. The marine engineering structure corrosion image acquisition device according to claim 1, characterized in that: The anti-collision device (6) also includes a shell (601); the shell (601) is a hollow structure; the upper and lower shells of the shell (601) are connected by a V-shaped connector (602); the shell (601) contains an elastic energy dissipation structure.

6. The marine engineering structure corrosion image acquisition device according to claim 1, characterized in that: The anti-collision beam (604) has a large triangular hole (631) in the middle; small triangular holes (632) are interspersed between the large triangular holes (631); there is a groove (633) between the small triangular holes (632) and the top plate (634) of the anti-collision beam.

7. The marine engineering structure corrosion image acquisition device according to claim 1, characterized in that: The upper frame (101) also contains a buoyancy adjustment device; the buoyancy adjustment device includes a piston (306) and a cylinder (308), the piston (306) dividing the cylinder (308) into a water chamber (322) and an air chamber (321); the water chamber (322) is divided into chamber A and chamber B; the ratio of the volume of seawater in chamber A to the volume of air in chamber (321) is determined.

8. The marine engineering structure corrosion image acquisition device according to claim 7, characterized in that: The piston (306) has one end of a piston shaft (309) connected to its upper surface. The other end of the piston shaft (309) is located outside the cylinder (308) and connected to a drive shaft (305). The drive shaft (305) is driven by a drive motor (302) through a reducer (303). The lower surface of the piston (306) is connected to one end of the telescopic tube (307), and the other end of the telescopic tube (307) is connected to the cylinder (308) through a sealing device (304); it can suppress seawater from invading from chamber B in the water chamber (322) into chamber A; the telescopic tube (307) is a flexible component.

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