Underwater angle-adjustable normal-pressure drainage welding device based on folding cavity

Abstract

The invention discloses an underwater angle-adjustable normal-pressure drainage welding device based on a folding cavity. A main frame of the device is provided with double cavities and is used for welding work after underwater drainage; the angle of the folding cavity system can be adjusted so as to adapt to welding operation wall faces of different forms, and the main frame is installed in the folding cavity system and communicates with the folding cavity system. The air pressure adjusting system is communicated with the double cavities of the main frame to realize independent adjustment of pressure, so that water drainage and water blocking are performed; the operation window system is installed on the main frame to conduct visual welding work, and the adsorption mechanism is installed on the folding type cavity system and used for adsorption of a welding operation wall face. According to the underwater welding robot, a dry environment of an underwater welding surface with a complex angle can be created and maintained, precise welding operation is completed through the observation window and the operation glove, efficient and stable underwater welding operation of a multi-angle wall surface can be achieved, meanwhile, the sealing performance and stability in the operation process are ensured, and the underwater welding robot can be widely applied to the fields of underwater welding, repairing and the like.

Description

Technical Field

[0001] The invention relates to an underwater drainage welding device, relates to the technical field of underwater welding, and particularly relates to an underwater angle-adjustable normal-pressure drainage welding device based on a foldable cavity. Background Art

[0002] In underwater welding operations, due to the influence of environmental factors such as water depth, pressure, and temperature, traditional underwater operation equipment often faces technical difficulties such as sealing failure and pressure imbalance during operation. Especially when working at complex angles or on irregular surfaces, traditional underwater welding equipment lacks sufficient adaptability and stability and is easily disturbed by water pressure and environmental factors, resulting in incomplete sealing and unstable welding results. In addition, since the equipment usually needs to operate in a high water pressure environment, how to maintain the pressure difference between the inner and outer cavities and effectively control the sealing performance have become key issues in the design. Therefore, it is of great practical significance to develop an underwater welding device that can adapt to changes in complex underwater environments and has adaptive sealing functions. Summary of the Invention

[0003] To address the challenges presented by the prior art, the present invention provides an underwater, angle-adjustable, atmospheric-pressure, drainage welding device based on a foldable cavity. This device combines precise underwater pressure regulation, sealing control, and a welding operating system, enabling efficient and stable underwater welding of multi-angle surfaces while ensuring sealing and stability during operation. It is widely applicable in underwater welding, repair, and other fields.

[0004] The technical solution adopted in the present invention is:

[0005] The underwater angle-adjustable normal-pressure drainage welding device based on the foldable cavity of the present invention comprises:

[0006] The main frame is provided with a double chamber and is used for welding work after underwater drainage.

[0007] The foldable cavity system is used for angle adjustment during underwater welding work to adapt to different shapes of welding work surfaces. The main frame is installed in the middle of the foldable cavity system and is interconnected.

[0008] The air pressure regulating system is installed on the main frame and is connected to the dual chambers of the main frame to achieve independent regulation of the pressure of the two chambers, thereby draining water and blocking water.

[0009] Operating window system, hermetically mounted on the main frame to allow visualization of welding work.

[0010] The adsorption mechanism is installed on the foldable cavity system and is used for adsorption of the welding working wall.

[0011] The foldable cavity system includes two symmetrically arranged foldable cavity components and both are connected to the main frame. Each foldable cavity component includes an adsorption plate and a corrugated plate group. One side of the adsorption plates of the two foldable cavity components is arranged parallel to each other and hinged to each other. A rectangular window penetrating the plate surface is symmetrically opened at the center of the opposite side of the two adsorption plates. The corrugated plate group is installed on each adsorption plate and is located directly above the rectangular window. Each corrugated plate group is composed of two outer fan annular corrugated plates, two inner fan annular corrugated plates, and an outer fan annular corrugated plate. The hollow cylindrical body is composed of an outer layer of corrugated plates and an inner layer of corrugated plates. The bottom surface of the hollow cylindrical body is a fan-shaped bottom surface composed of an outer layer of fan-shaped corrugated plates and an inner layer of fan-shaped corrugated plates with the same center and is perpendicular to the adsorption plate. The outer layer of corrugated plates is coaxial as the outer peripheral surface of the hollow cylindrical body, and the inner layer of corrugated plates is coaxially located in the middle of the hollow cylindrical body; the first side of the inner layer of corrugated plates is connected to the first side of the rectangular window of the adsorption plate away from the center of the two adsorption plates, and the second side of the inner layer of corrugated plates facing the first side is connected to the main frame. In the middle of one side, for the other two adjacent sides of the inner corrugated plate, the adjacent sides are connected to the inner edge of the outer fan-shaped corrugated plate and the outer edge of the inner fan-shaped corrugated plate in the bottom surface of the hollow cylinder, and the inner edge of the inner fan-shaped corrugated plate is close to the center of the two adsorption plates; one of the radial edges of the two inner fan-shaped corrugated plates is respectively connected to the adjacent two sides of the first side of the rectangular window of the adsorption plate and does not exceed the plate surface of the adsorption plate, and the other radial edges of the two inner fan-shaped corrugated plates are respectively connected to one side of the main frame; one of the radial edges of the two outer fan-shaped corrugated plates is respectively connected to the top surface of the adsorption plate and does not exceed the plate surface of the adsorption plate, and the other radial edges of the two outer fan-shaped corrugated plates are respectively connected to one side of the main frame; the first side of the outer corrugated plate is connected to the top surface of the adsorption plate and is parallel to the first side of the inner corrugated plate, the second side of the outer corrugated plate facing the first side is connected to one side end of the main frame, and the other two adjacent sides of the outer corrugated plate are respectively connected to the outer edge of the outer fan-shaped corrugated plate.

[0012] Each of the corrugated plate groups also includes a cavity frame, which includes N support rods. The two bottom surfaces of the hollow cylindrical body are respectively provided with N / 2 support rods. For each bottom surface of the hollow cylindrical body, one end of the N / 2 support rods is evenly spaced and connected to the inner ring edge of the inner fan annular corrugated plate, and the other end of the N / 2 support rods is evenly spaced and connected to the outer ring edge of the outer fan annular corrugated plate and an adjacent side edge connected to the outer corrugated plate. The rod body of each support rod is connected to the plate surface of the inner fan annular corrugated plate and the outer fan annular corrugated plate; the outer fan annular corrugated plate, inner fan annular corrugated plate, outer corrugated plate and inner corrugated plate of each corrugated plate group are all extended and retracted under the support of the cavity frame to achieve angle adjustment between each adsorption plate and the side of the main frame.

[0013] The main frame is a double-layer columnar cavity structure, and the bottom surfaces on both sides of the main frame are fan-shaped and perpendicular to the adsorption plate; the interior of the main frame is provided with an arc-shaped isolation plate with the same central axis and divides the interior of the main frame into a completely separated inner low-pressure cavity and an outer high-pressure cavity; the center of the outer peripheral top surface of the main frame and the center of the outer peripheral top surface of the arc-shaped isolation plate directly below are both provided with a through rectangular operation window, and the four sides of the two rectangular operation windows are sealed and connected to form an operation space through the isolation plate, and the operation space is isolated from the high-pressure cavity and connected to the low-pressure cavity; the symmetrical sides of the outer peripheral top surface of the main frame are respectively connected to the two outer layers The second side of the corrugated plate and the symmetrical two side edges of the arc-shaped isolation plate are respectively connected to the second side edges of the two inner corrugated plates. For each fan-shaped bottom surface composed of the inner fan-shaped corrugated plate and the outer fan-shaped corrugated plate, the other radius edge of the fan-shaped bottom surface is connected to the radius edge of the bottom surface of the main frame through a support rod; the space between the inner corrugated plate and the two inner fan-shaped corrugated plates of each corrugated plate group is connected to the low-pressure cavity, and the space formed by the outer corrugated plate, the two outer fan-shaped corrugated plates and the inner corrugated plate of each corrugated plate group is connected to the high-pressure cavity; the operation window system is installed in the rectangular operation window on the outer peripheral top surface of the main frame.

[0014] The lengths of the outer peripheral top surface of the main frame and the symmetrical two side edges of the arc-shaped isolation plate, the lengths of the first and second side edges of the rectangular window of the adsorption plate, the lengths of the first and second side edges of the outer corrugated plate and the length of the first side edge of the inner corrugated plate are all equal, and the lengths of the other two adjacent side edges of the inner corrugated plate are equal to the inner ring edge of the outer fan-shaped corrugated plate and the lengths of the outer ring edge of the inner fan-shaped corrugated plate; the length of one of the radial edges of the two inner fan-shaped corrugated plates is less than the lengths of the adjacent two side edges of the first side edge of the rectangular window of the adsorption plate; the lengths of the other two adjacent side edges of the outer corrugated plate are equal to the lengths of the outer ring edge of the outer fan-shaped corrugated plate; the outer ring edge of the fan-shaped bottom surface of the main frame and the adjacent side edges of the two outer corrugated plates on the same side are located on the same circle, the inner ring edge of the fan-shaped bottom surface of the main frame and the inner ring edges of the two inner fan-shaped corrugated plates on the same side are located on the same circle, and the arc edge of the arc-shaped isolation plate and the adjacent side edges of the two inner corrugated plates on the same side are located on the same circle.

[0015] The operation window system includes a double operation port assembly and a transparent observation window with double operation ports. The double operation port assembly is located inside the main frame. The double operation port assembly includes two sealing gloves. The root ends of the two sealing gloves are respectively sealed and connected to the double operation ports of the transparent observation window.

[0016] The air pressure regulating system is specifically an air pressure controller, which is installed on the outer peripheral top surface of the main frame. The air pressure controller is provided with an air inlet, a low-pressure vent and a high-pressure vent. The air inlet is connected to an external air source, and the low-pressure vent and the high-pressure vent are respectively connected to the low-pressure chamber and the high-pressure chamber of the main frame to ensure stable gas circulation. By independently adjusting the pressure of the low-pressure chamber and the high-pressure chamber, the pressure difference between the low-pressure chamber and the high-pressure chamber is maintained.

[0017] The adsorption mechanism includes four high-power suction cup motor assemblies and two low-power suction cup motor assemblies. The high-power suction cup motor assembly and the low-power suction cup motor assembly have the same structure, both including a suction cup body, a centrifugal impeller, a waterproof motor and a suction cup cover. Two large adsorption through holes are provided on both sides of each adsorption plate and a small adsorption through hole is provided in the middle. A high-power suction cup motor assembly and a low-power suction cup motor assembly are installed in each large adsorption through hole and small adsorption through hole respectively; the bottom of the suction cup body is coaxially installed in the adsorption through hole, the suction cup cover is sealed on the top of the suction cup body, the body of the waterproof motor is installed inside the suction cup body and the suction cup cover, the inner bottom of the suction cup body serves as a centrifugal chamber, the body of the centrifugal impeller is installed in the centrifugal chamber and is located directly below the waterproof motor, and the output shaft of the waterproof motor is synchronously connected to the center of the centrifugal impeller; the adsorption plate is adsorbed on the working wall surface through the flow field generated by the rotation of each centrifugal impeller.

[0018] The device of the present invention can realize underwater welding operations at different angles according to the different requirements of the underwater working environment through an adaptive folding cavity sealing system, and maintain the normal pressure drainage function in the working environment. The device includes multiple functional modules to ensure the stable and safe operation of the equipment in the underwater environment.

[0019] The beneficial effects of the present invention are:

[0020] 1. The device of the present invention is highly adaptable and can adapt to changes in wall angles from 90° to 270°. It can create and maintain a dry environment for underwater welding surfaces with complex angles, ensuring that it can work stably in complex underwater environments. At the same time, precision welding operations can be completed through the observation window and operating gloves. It is particularly suitable for working on walls with different angle requirements in tasks such as underwater welding and repair.

[0021] 2. The device of the present invention adopts a double-layer structure design, with the inner layer being a low-pressure working chamber and the outer layer being a high-pressure protective chamber. It can effectively cope with different underwater depths and pressure environments, enhances sealing, and ensures stable operation of the equipment.

[0022] 3. The device of the present invention uses the adaptive sealing technology of the foldable cavity system. The present invention can achieve normal pressure drainage operations in underwater environments, avoid the impact of underwater high pressure, maintain a stable environment inside the working chamber, and ensure the accuracy and safety of welding operations.

[0023] 4. The device of the present invention adopts a multi-stage adsorption mechanism, which can stably adsorb in an underwater environment, prevent the displacement or falling of the equipment, and improve the safety and accuracy of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of the device of the present invention;

[0025] Figure 2 is a cross-sectional view of the device of the present invention;

[0026] Figure 3 A top view of the device of the present invention;

[0027] Figure 4 It is a cross-sectional view of the adsorption mechanism of the device of the present invention.

[0028] Figure 5 It is a three-dimensional diagram of the main frame of the device of the present invention.

[0029] Figure 6 This is a diagram of the 90° wall working state of the device of the present invention;

[0030] Figure 7 This is a 270° wall working state diagram of the device of the present invention;

[0031] In the figure: 1. Main frame, 2. Folding cavity system, 3. Air pressure regulating system, 4. Operation window system, 5. Adsorption mechanism, 6. Adsorption plate, 7. Outer corrugated plate, 8. Inner corrugated plate, 9. Low-pressure cavity, 10. High-pressure cavity, 11. Low-pressure vent, 12. Air pressure controller, 13. High-pressure vent, 14. Cavity frame, 15. Double operation port assembly, 16. Transparent observation window, 17. Suction cup body, 18. Centrifugal impeller, 19. Waterproof motor, 10. Suction cup cover. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1As shown, the underwater adjustable angle normal pressure drainage welding device based on the foldable cavity of the present invention includes a main frame 1, a foldable cavity system 2, an air pressure regulating system 3, an operating window system 4 and an adsorption mechanism 5. The main frame 1 is provided with a double chamber and is used for welding work after underwater drainage; the foldable cavity system 2 is used for angle adjustment during underwater welding work to adapt to welding work walls of different shapes. The main frame 1 is installed in the middle of the foldable cavity system 2 and is interconnected; the air pressure regulating system 3 is installed on the main frame 1 and is respectively connected to the double chambers of the main frame 1 to realize independent adjustment of the pressure of the two chambers, thereby draining water and blocking water; the operating window system 4 is sealed and installed on the main frame 1 for visual welding work; the adsorption mechanism 5 is installed on the foldable cavity system 2 and is used for adsorption of the welding work wall.

[0034] like Figure 2As shown, the foldable cavity system 2 includes two symmetrically arranged foldable cavity components and both are connected to the main frame 1. Each foldable cavity component includes an adsorption plate 6 and a corrugated plate group. One side of the adsorption plates 6 of the two foldable cavity components are arranged parallel to each other and hinged to each other. A rectangular window penetrating the plate surface is symmetrically opened at the center of the side of the two adsorption plates 6 facing each other. The corrugated plate group is installed on each adsorption plate 6 and is located directly above the rectangular window. Each corrugated plate group is composed of two outer fan-shaped corrugated plates, two inner fan-shaped corrugated plates, and an outer layer. The hollow cylindrical body is composed of a corrugated plate 7 and an inner corrugated plate 8. The bottom surface of the hollow cylindrical body is a fan-shaped bottom surface composed of an outer fan-shaped corrugated plate and an inner fan-shaped corrugated plate with the same center and is perpendicular to the adsorption plate 6. The outer corrugated plate 7 is coaxial as the outer peripheral surface of the hollow cylindrical body, and the inner corrugated plate 8 is coaxially located in the middle of the hollow cylindrical body; the first side of the inner corrugated plate 8 is connected to the first side of the rectangular window of the adsorption plate 6 away from the center of the two adsorption plates 6, and the second side of the inner corrugated plate 8 facing the first side is connected to the main frame 1 In the middle of one side, for the other two adjacent sides of the inner corrugated plate 8, the adjacent sides are connected to the inner ring edge of the outer fan annular corrugated plate and the outer ring edge of the inner fan annular corrugated plate in the bottom surface of the hollow cylindrical body, and the inner ring edge of the inner fan annular corrugated plate is close to the center of the two adsorption plates 6; one of the radial edges of the two inner fan annular corrugated plates is respectively connected to the adjacent two side edges of the first side of the rectangular window of the adsorption plate 6 and does not exceed the plate surface of the adsorption plate 6, and the other radial edges of the two inner fan annular corrugated plates are respectively connected to the One side; one of the radius edges of the two outer fan-shaped corrugated plates is respectively connected to the top surface of the adsorption plate 6 and does not exceed the plate surface of the adsorption plate 6, and the other radius edges of the two outer fan-shaped corrugated plates are respectively connected to one side of the main frame 1; the first side edge of the outer corrugated plate 7 is connected to the top surface of the adsorption plate 6 and is parallel to the first side edge of the inner corrugated plate 8, the second side edge of the outer corrugated plate 7 opposite the first side edge is connected to one end of the main frame 1, and the other two adjacent sides of the outer corrugated plate 7 are respectively connected to the outer ring edge of the outer fan-shaped corrugated plate. The outer corrugated plate 7 is used to isolate the surrounding water environment and the high-pressure gas layer, and the inner corrugated plate 8 is used to isolate the high-pressure gas and the low-pressure gas layer. There is one plate on each side to isolate the external water environment from the internal gas environment.

[0035] Each corrugated plate group also includes a cavity skeleton 14, which includes N support rods. The two bottom surfaces of the hollow cylindrical body are respectively provided with N / 2 support rods. For each bottom surface of the hollow cylindrical body, one end of the N / 2 support rods is evenly spaced and connected to the inner ring edge of the inner fan annular corrugated plate, and the other end of the N / 2 support rods is evenly spaced and connected to the outer ring edge of the outer fan annular corrugated plate and an adjacent side edge of the outer corrugated plate 7. The rod body of each support rod is connected to the inner fan annular corrugated plate and the outer The plate surface of the layer fan annular corrugated plate; the outer layer fan annular corrugated plate, the inner layer fan annular corrugated plate, the outer layer corrugated plate 7 and the inner layer corrugated plate 8 of each corrugated plate group are all expanded and contracted under the support of the cavity skeleton 14 to achieve 0°-90° angle adjustment between each adsorption plate 6 and the side of the main frame 1; all corrugated plates are supported by the high-strength cavity skeleton 14, and the cavity skeleton 14 is made of high-strength carbon fiber material, which has compressive and corrosion resistance. It can effectively withstand the pressure and mechanical impact of the underwater environment and can support the pressure of the underwater environment.

[0036] like Figure 5 As shown, the main frame 1 is a double-layer cylindrical cavity structure, specifically a double-layer quarter-cylindrical support structure, that is, a 90° arc-shaped cavity structure; the bottom surfaces on both sides of the main frame 1 are fan-shaped and perpendicular to the adsorption plate 6; the interior of the main frame 1 is provided with an arc-shaped isolation plate with the same central axis and divides the interior of the main frame 1 into a completely separated inner low-pressure chamber 9 and an outer high-pressure chamber 10; a through rectangular operating window is provided at the center of the outer peripheral top surface of the main frame 1 and the center of the outer peripheral top surface of the arc-shaped isolation plate directly below, and the four sides of the two rectangular operating windows are sealed and connected to form an operating space through the isolation plate, thereby forming an operating space, which is isolated from the high-pressure chamber 10 and connected to the low-pressure chamber 9; the symmetrical two sides of the outer peripheral top surface of the main frame 1 are respectively connected to the second side of the two outer corrugated plates 7 The symmetrical two side edges of the arc-shaped isolation plate are respectively connected to the second side edges of the two inner corrugated plates 8. For each fan-shaped bottom surface composed of the inner fan-shaped corrugated plate and the outer fan-shaped corrugated plate, the other radius edge of the fan-shaped bottom surface is connected to the radius edge of the bottom surface of the main frame 1 through a support rod; the space between the inner corrugated plate 8 and the two inner fan-shaped corrugated plates of each corrugated plate group is connected to the low-pressure chamber 9, and the space composed of the outer corrugated plate 7, the two outer fan-shaped corrugated plates and the inner corrugated plate 8 of each corrugated plate group is connected to the high-pressure chamber 10; the operating window system 4 is installed in the rectangular operating window on the outer peripheral top surface of the main frame 1; the maximum telescopic amount of each corrugated plate of the folding cavity system 2 is 90°, so that the overall device can adapt to the wall angle change of 90°-270°.

[0037] The lengths of the outer peripheral top surface of the main frame 1 and the symmetrical two side edges of the arc-shaped isolation plate, the lengths of the first and second side edges of the rectangular window of the adsorption plate 6, the lengths of the first and second side edges of the outer corrugated plate 7, and the length of the first side edge of the inner corrugated plate 8 are all equal; the lengths of the other two adjacent side edges of the inner corrugated plate 8 are equal to the inner ring edge of the outer fan-shaped corrugated plate and the outer ring edge of the inner fan-shaped corrugated plate; the length of one of the radial edges of the two inner fan-shaped corrugated plates is less than the lengths of the adjacent two side edges of the first side edge of the rectangular window of the adsorption plate 6; the lengths of the other two adjacent side edges of the outer corrugated plate 7 are equal to the lengths of the outer ring edge of the outer fan-shaped corrugated plate; the outer ring edge of the fan-shaped bottom surface of the main frame 1 and the adjacent side edges of the two outer corrugated plates 7 on the same side are located on the same circle; the inner ring edge of the fan-shaped bottom surface of the main frame 1 and the inner ring edges of the two inner fan-shaped corrugated plates on the same side are located on the same circle; the arc edge of the arc-shaped isolation plate and the adjacent side edges of the two inner corrugated plates 8 on the same side are located on the same circle.

[0038] like Figure 3 As shown, the operation window system 4 includes a dual operation port assembly 15 and a transparent observation window 16 with dual operation ports. The dual operation port assembly 15 is located inside the main frame 1. The dual operation port assembly 15 includes two sealing gloves, and the root ends of the two sealing gloves are respectively sealed to the dual operation ports of the transparent observation window 16; the transparent observation window 16 is connected to the main frame through a sealing interface to ensure that the internal air pressure is maintained stable during operation and prevent water from entering the interior of the device. The transparent observation window 16 is made of high-strength transparent material with waterproof and pressure-resistant properties. It can maintain transparency in an underwater high-pressure environment, allowing the operator to observe the work area in real time. The operation window system 4 can provide accurate vision and operation channels in complex underwater operating environments. The operator controls the welding tool through the sealing gloves to complete high-precision welding operations on the external wall surface at the rectangular window of the adsorption plate 6, greatly improving operating efficiency and safety.

[0039] The air pressure regulating system 3 is specifically an air pressure controller 12, which is installed on the outer peripheral top surface of the main frame 1. An air inlet, a low-pressure vent 11 and a high-pressure vent 13 are provided in the air pressure controller 12. The air inlet is connected to an external air source, and the low-pressure vent 11 and the high-pressure vent 13 are respectively connected to the low-pressure chamber 9 and the high-pressure chamber 10 of the main frame 1 to ensure stable gas circulation. By independently adjusting the pressure of the low-pressure chamber 9 and the high-pressure chamber 10, the pressure difference between the low-pressure chamber 9 and the high-pressure chamber 10 is maintained. The air pressure regulating system 3 utilizes a dual-channel vent design, which can effectively control the air pressure difference and the water pressure difference during underwater operations, ensuring the stability and sealing performance of the equipment in the underwater environment and avoiding any leakage or pressure imbalance problems. The air pressure controller 12 uses two AVENTICS TM ED05 series E / P pressure regulator is used to achieve independent regulation of the pressure in the two chambers.

[0040] like Figure 4 As shown, the adsorption mechanism 5 includes four high-power suction cup motor assemblies and two low-power suction cup motor assemblies. The high-power suction cup motor assembly and the low-power suction cup motor assembly have the same structure, both including a suction cup body 17, a centrifugal impeller 18, a waterproof motor 19 and a suction cup cover 20. Two large adsorption through holes are opened on both sides of each adsorption plate 6 and a small adsorption through hole is opened in the middle. A high-power suction cup motor assembly and a low-power suction cup motor assembly are installed in each large adsorption through hole and small adsorption through hole respectively; the bottom of the suction cup body 17 is coaxially installed in the adsorption through hole, the suction cup cover 20 is sealed on the top of the suction cup body 17, the body of the waterproof motor 19 is installed inside the suction cup body 17 and the suction cup cover 20, the inner bottom of the suction cup body 17 serves as a centrifugal chamber, the body of the centrifugal impeller 18 is installed in the centrifugal chamber and is located directly below the waterproof motor 19, and the output shaft of the waterproof motor 19 is synchronously connected to the center of the centrifugal impeller 18; the adsorption plate 6 is adsorbed on the working wall surface through the flow field generated by the rotation of each centrifugal impeller 18.

[0041] The waterproof motor 19 drives the centrifugal impeller 18 via its output shaft. The impeller 18 adjusts the suction force by adjusting its speed, creating a flow field in the water. This flow field facilitates suction to the desired surface. The large suction cup motor has three times the power of the small suction cup motor, creating a graded suction pattern with primary and auxiliary suction zones. The bottom surface of the suction plate 6 also features a micro-raised texture to enhance friction with the working surface, ensuring stability and strength during the suction process.

[0042] The specific implementation process of the underwater adjustable angle normal pressure drainage welding device based on the foldable cavity proposed by the present invention is as follows:

[0043] Before the equipment is launched into the water, the welding tools and welding rods have been pre-loaded into the low-pressure chamber 9. After the equipment is launched into the water, it is first necessary to fix the device on the working wall of the area to be welded. The fixing operation process includes firstly attaching the bottom surfaces of the two adsorption plates 6 of the foldable cavity system 2 to the working wall respectively. The adjustment angle of the adsorption plate 6 can be adjusted by the hinged cavity frame 14, ranging from 0° to 90°, to ensure that the adsorption plate 6 can adapt to working walls of different shapes. After the fixation is completed, the waterproof motor 19 of the high-power suction cup motor assembly and the low-power suction cup motor assembly in the adsorption mechanism 5 is started. The centrifugal impeller 18 is integrated inside the suction cup motor assembly. By adjusting the speed of the waterproof motor 19, the adsorption force between the centrifugal impeller 18 and the working wall is changed, thereby realizing the strong adsorption of the adsorption plate 6 on the working wall, ensuring that the device can be firmly attached to the underwater working position. The surface of the adsorption plate 6 is provided with a micro-raised texture to further enhance the friction between the wall and improve the stability and strength of the adsorption process.

[0044] After the device is secured, the drainage preparation phase begins. The air pressure controller 12 of the air pressure control system 3 begins to synchronously regulate the pressures of the low-pressure chamber 9 and the high-pressure chamber 10. Specifically, the inner low-pressure chamber 9 is connected to an external air pump via a low-pressure vent 11, and the outer high-pressure chamber 10 is connected to a high-pressure air source via a high-pressure vent 13. The air pressure controller 12 is responsible for independently regulating the air pressures of the low-pressure chamber 9 and the high-pressure chamber 10, ensuring a reasonable control of the pressure difference between the low-pressure chamber 9 and the high-pressure chamber 10.

[0045] During the drainage phase, the air pressure controller 12 first synchronizes the air pressure in the low-pressure chamber 9 and the high-pressure chamber 10 to a level close to the water pressure in the working wall area, effectively removing water from the work area and ensuring a dry working environment. After completing the initial drainage, the ventilation pressure of the inner low-pressure chamber 9 is gradually reduced or stopped, forming a low-pressure working environment, while the outer high-pressure chamber 10 continues to flow high-pressure gas to prevent surrounding water from flowing into the working area. At this point, the working area of ​​the device has achieved normal pressure drainage, and the internal space has formed a stable, controllable dry environment suitable for underwater welding operations.

[0046] As the working environment stabilizes, the operator can observe the welding process in real time through the operating window system 4 on the top of the main frame 1. The operator can precisely control the welding tool and perform the welding operation through the sealed gloves in the transparent observation window 16. The design of the operating window system 4 ensures a tight seal and safe operation during operation, preventing water from entering the device while maintaining stable internal air pressure.

[0047] During the welding process, the operator can adjust the angle of the foldable cavity system 2 according to different welding requirements and environmental demands to achieve flexible adjustment of the welding angle, such as Figure 6 As shown, the 90° wall working state of the device of the present invention is shown. Figure 7 As shown, it is the 270° wall working state of the device of the present invention.

[0048] Furthermore, the adsorption mechanism 5 achieves stable adsorption force regulation during operation through a graded adsorption mode. High-power and low-power suction cup motor assemblies act on the primary and auxiliary adsorption zones, respectively, ensuring the device can stably adhere to underwater surfaces of varying shapes, further enhancing the stability and safety of welding operations.

[0049] Finally, after the device completes the welding operation, the working environment can be restored to normal by adjusting the air pressure control system 3, ensuring that the device can smoothly leave the working wall area after completing the task and be ready for the next operation.

[0050] In summary, the specific implementation of the present invention not only achieves efficient and stable underwater welding operations through precise design and reasonable pressure regulation control, but also has excellent adaptability in sealing, drainage and angle adjustment, etc., providing an innovative and efficient technical solution for underwater welding, repair and other operations.

Claims

1. An underwater adjustable angle normal pressure drainage welding device based on a foldable cavity, characterized in that: include: A main frame (1) is provided with a double chamber and is used for welding work after underwater drainage; The foldable cavity system (2) is used for adjusting the angle during underwater welding to adapt to different shapes of welding working surfaces. The main frame (1) is installed in the middle of the foldable cavity system (2) and is interconnected. An air pressure regulating system (3) is installed on the main frame (1) and is connected to the two chambers of the main frame (1) to achieve independent regulation of the pressure of the two chambers, thereby draining water and blocking water; An operating window system (4) is sealed and mounted on the main frame (1) to allow for visual welding work; The adsorption mechanism (5) is installed on the foldable cavity system (2) and is used for adsorbing the wall surface of the welding operation.

2. The underwater adjustable angle normal pressure drainage welding device based on the foldable cavity according to claim 1 is characterized in that: The foldable cavity system (2) includes two symmetrically arranged foldable cavity components and both are connected to the main frame (1), each foldable cavity component includes an adsorption plate (6) and a corrugated plate group, one side of the adsorption plates (6) of the two foldable cavity components are arranged parallel to each other and hinged to each other, and a rectangular window penetrating the plate surface is symmetrically opened at the center of the one side of the two adsorption plates (6), and the corrugated plate group is installed on each adsorption plate (6) and is located directly above the rectangular window; each corrugated plate group is composed of two outer fan-shaped corrugated plates, two inner fan-shaped corrugated plates, and a plurality of corrugated plates. The hollow cylindrical body is composed of an outer corrugated plate (7) and an inner corrugated plate (8), the bottom surface of the hollow cylindrical body is a fan-shaped bottom surface composed of an outer fan-shaped corrugated plate and an inner fan-shaped corrugated plate with the same center and is perpendicular to the adsorption plate (6), the outer corrugated plate (7) is coaxially connected to the outer peripheral surface of the hollow cylindrical body, and the inner corrugated plate (8) is coaxially located in the middle of the hollow cylindrical body; the first side edge of the inner corrugated plate (8) is connected to the first side edge of the rectangular window of the adsorption plate (6) away from the center of the two adsorption plates (6), and the inner corrugated plate (8) is directly opposite to the first side edge. The second side edge of the edge is connected to the middle of one side of the main frame (1), and for the other two adjacent side edges of the inner layer corrugated plate (8), the adjacent side edges are connected between the inner ring edge of the outer layer fan annular corrugated plate and the outer ring edge of the inner layer fan annular corrugated plate in the bottom surface of the hollow cylindrical body, and the inner ring edge of the inner layer fan annular corrugated plate is close to the center of the two adsorption plates (6); one of the radial edges of the two inner layer fan annular corrugated plates is respectively connected to the adjacent two side edges of the first side edge of the rectangular window of the adsorption plate (6), and the other radial edges of the two inner layer fan annular corrugated plates are respectively connected to the main frame (1) one side; one of the radial edges of the two outer fan annular corrugated plates is respectively connected to the top surface of the adsorption plate (6), and the other radial edges of the two outer fan annular corrugated plates are respectively connected to one side of the main frame (1); the first side of the outer corrugated plate (7) is connected to the top surface of the adsorption plate (6) and is parallel to the first side of the inner corrugated plate (8), the second side of the outer corrugated plate (7) opposite to the first side is connected to one end of the main frame (1), and the other two adjacent sides of the outer corrugated plate (7) are respectively connected to the outer ring edge of the outer fan annular corrugated plate.

3. The underwater adjustable angle normal pressure drainage welding device based on the foldable cavity according to claim 2 is characterized in that: Each of the corrugated plate groups further comprises a cavity frame (14), the cavity frame (14) comprising N support rods, and the two bottom surfaces of the hollow cylindrical body are respectively provided with N / 2 support rods, and for each bottom surface of the hollow cylindrical body, one end of the N / 2 support rods is respectively evenly spaced and connected to the inner ring edge of the inner fan annular corrugated plate, and the other end of the N / 2 support rods is respectively evenly spaced and connected to the outer ring edge of the outer fan annular corrugated plate and the outer corrugated plate (7), and the rod body of each support rod is connected to the plate surface of the inner fan annular corrugated plate and the outer fan annular corrugated plate; the outer fan annular corrugated plate, the inner fan annular corrugated plate, the outer corrugated plate (7) and the inner corrugated plate (8) of each corrugated plate group are all extended and retracted under the support of the cavity frame (14) to achieve angle adjustment between each adsorption plate (6) and the side surface of the main frame (1).

4. The underwater adjustable angle normal pressure drainage welding device based on the foldable cavity according to claim 2 is characterized in that: The main frame (1) is a double-layer columnar cavity structure, and the bottom surfaces on both sides of the main frame (1) are fan-shaped and perpendicular to the adsorption plate (6); the interior of the main frame (1) is provided with an arc-shaped isolation plate with the same central axis and divides the interior of the main frame (1) into a completely separated inner low-pressure chamber (9) and an outer high-pressure chamber (10); the center of the outer peripheral top surface of the main frame (1) and the center of the outer peripheral top surface of the arc-shaped isolation plate directly below are both provided with a through rectangular operation window, and the four sides of the two rectangular operation windows are respectively sealed and connected by the isolation plate to form an operation space, and the operation space is isolated from the high-pressure chamber (10) and connected to the low-pressure chamber (9); the symmetrical two sides of the outer peripheral top surface of the main frame (1) are respectively connected To the second side of the two outer corrugated plates (7), the symmetrical two side edges of the arc-shaped isolation plate are respectively connected to the second side of the two inner corrugated plates (8), and for each fan-shaped bottom surface composed of the inner fan-shaped corrugated plate and the outer fan-shaped corrugated plate, the other radius edge of the fan-shaped bottom surface is connected to the radius edge of the bottom surface of the main frame (1); the space between the inner corrugated plate (8) and the two inner fan-shaped corrugated plates of each corrugated plate group is connected to the low-pressure chamber (9), and the space formed between the outer corrugated plate (7), the two outer fan-shaped corrugated plates and the inner corrugated plate (8) of each corrugated plate group is connected to the high-pressure chamber (10); the operation window system (4) is installed in the rectangular operation window on the outer peripheral top surface of the main frame (1).

5. The underwater angle-adjustable normal-pressure drainage welding device based on a foldable cavity according to claim 4 is characterized in that: The lengths of the outer peripheral top surface of the main frame (1) and the symmetrical two sides of the arc-shaped isolation plate, the lengths of the first and second sides of the rectangular window of the adsorption plate (6), the lengths of the first and second sides of the outer corrugated plate (7) and the length of the first side of the inner corrugated plate (8) are all equal, and the lengths of the other two adjacent sides of the inner corrugated plate (8) are equal to the lengths of the inner ring edge of the outer fan annular corrugated plate and the outer ring edge of the inner fan annular corrugated plate; the length of one of the radius sides of the two inner fan annular corrugated plates is less than the length of the rectangular window of the adsorption plate (6). The lengths of the adjacent two sides of the first side of the shaped window are equal to the lengths of the other two adjacent sides of the outer corrugated plate (7); the lengths of the outer ring edge of the outer fan-shaped corrugated plate (7) are equal to the lengths of the outer ring edge of the outer fan-shaped corrugated plate; the outer ring edge of the fan-shaped bottom surface of the main frame (1) and the adjacent side edges of the two outer-layer corrugated plates (7) on the same side are located on the same circle, the inner ring edge of the fan-shaped bottom surface of the main frame (1) and the inner ring edges of the two inner fan-shaped corrugated plates on the same side are located on the same circle, and the arcuate edge of the arc-shaped isolation plate and the adjacent side edges of the two inner-layer corrugated plates (8) on the same side are located on the same circle.

6. The underwater angle-adjustable normal-pressure drainage welding device based on a foldable cavity according to claim 4 is characterized in that: The operating window system (4) comprises a double operating port assembly (15) and a transparent observation window (16) provided with the double operating ports. The double operating port assembly (15) is located inside the main frame (1). The double operating port assembly (15) comprises two sealing gloves, the root ends of the two sealing gloves being respectively sealed and connected to the double operating ports of the transparent observation window (16).

7. The underwater angle-adjustable normal-pressure drainage welding device based on a foldable cavity according to claim 4 is characterized in that: The air pressure regulating system (3) is specifically an air pressure controller (12), which is installed on the outer peripheral top surface of the main frame (1). The air pressure controller (12) is provided with an air inlet, a low-pressure vent (11) and a high-pressure vent (13). The air inlet is connected to an external air source, and the low-pressure vent (11) and the high-pressure vent (13) are respectively connected to the low-pressure chamber (9) and the high-pressure chamber (10) of the main frame (1). By independently adjusting the pressure of the low-pressure chamber (9) and the high-pressure chamber (10), the pressure difference between the low-pressure chamber (9) and the high-pressure chamber (10) is maintained.

8. The underwater adjustable angle normal pressure drainage welding device based on a foldable cavity according to claim 2 is characterized in that: The adsorption mechanism (5) includes four high-power suction cup motor assemblies and two low-power suction cup motor assemblies. The high-power suction cup motor assemblies and the low-power suction cup motor assemblies have the same structure, and both include a suction cup body (17), a centrifugal impeller (18), a waterproof motor (19) and a suction cup cover (20). Two large adsorption through holes are provided on both sides of each adsorption plate (6) and a small adsorption through hole is provided in the middle. A high-power suction cup motor assembly and a low-power suction cup motor assembly are respectively installed in each large adsorption through hole and each small adsorption through hole; the bottom of the suction cup body (17) is coaxial with the bottom of the suction cup body (17). The device is installed in the adsorption through hole, the suction cup cover (20) is sealed on the top of the suction cup body (17), the body of the waterproof motor (19) is installed inside the suction cup body (17) and the suction cup cover (20), the inner bottom of the suction cup body (17) serves as a centrifugal chamber, the body of the centrifugal impeller (18) is installed in the centrifugal chamber and is located directly below the waterproof motor (19), and the output shaft of the waterproof motor (19) is synchronously connected to the center of the centrifugal impeller (18); the adsorption plate (6) is adsorbed on the working wall surface by the flow field generated by the rotation of each centrifugal impeller (18).

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