43 results about "Underwater welding" patented technology

The invention relates to the technical field of equipment corrosion prevention, and discloses a life self-sensing sacrificial anode and cathode protection device which comprises a protection execution unit, a data acquisition unit and a remote sensing unit. Wherein the protection execution unit comprises an anode block, a conductive connecting piece and an adsorption device, one end of the conductive connecting piece is embedded into the anode block, the other end of the conductive connecting piece is fixed with the adsorption device, and the adsorption device is detachably connected with the protected steel structure. A working electrode of an electric quantity metering device of the data acquisition unit is electrically connected with the conductive connecting piece, and a counter electrode is electrically connected with the steel structure in the adsorption device combination area. And the remote sensing unit is in signal connection with the data acquisition unit and is used for receiving the acquired current data. According to the invention, remote real-time monitoring of cathode protection current is realized, the defect that the state of a traditional anode is unknown is overcome, and predictive maintenance is facilitated; meanwhile, the adsorption type detachable structure does not need underwater welding, the installation and replacement process is greatly simplified, and the engineering applicability and the maintenance efficiency are improved.

The invention belongs to the technical field of underwater welding, and discloses an underwater double-path ultrasonic synergistic laser-electric arc hybrid welding repair device and method. The device comprises a two-way ultrasonic synergistic TIG welding gun and a laser head which are both fixed on an external drainage cover, and sealing penetration pieces are arranged on the external drainage cover for the two-way ultrasonic synergistic TIG welding gun and the laser head; the double-path ultrasonic synergistic TIG welding gun comprises a tungsten electrode sound path and an end part sound path; the tungsten electrode sound path transmits ultrasonic energy to a welding gun tungsten electrode through a tungsten electrode ultrasonic transducer, the electric field at the root of the welding gun tungsten electrode and the micro-motion behavior of the welding gun tungsten electrode are affected, and therefore the electric arc is compressed, and the position of the root of the electric arc is finely adjusted. The end sound path acts on the end of the welding gun through the end ultrasonic transducers in an annular array, directional sound radiation pressure is applied, an electric arc column and the surface of a molten pool are adjusted, heat input is promoted to be evenly distributed, and the symmetry of the molten pool is improved. The welding quality and the process stability are remarkably improved.

The invention provides an underwater welding device and welding equipment. A first channel is formed in a first rod piece; the second rod piece is connected with the first rod piece; a second channel is formed in the second rod piece and communicates with the first channel; the welding assembly is arranged at the end, away from the first rod piece, of the second rod piece and used for welding a to-be-welded area. The laser optical fiber is arranged on the first rod piece and used for outputting laser to the first channel, and the laser is used for being output to the welding assembly through the first channel and the second channel; the shielding gas pipeline is arranged in the first channel and the second channel in a penetrating mode and extends in the axial direction of the first channel and the axial direction of the second channel so as to be used for outputting shielding gas to the welding assembly, and the shielding gas is used for forming a dry operation environment in the to-be-welded area during underwater operation; and the length directions of the first rod piece and the second rod piece are different, so that the operation flexibility and the space adaptability of the underwater welding device in the underwater narrow and complex environment are improved.

The invention belongs to the technical field of underwater welding, and particularly relates to pipeline joint welding equipment which comprises a base, the top end of the base is fixedly connected with a welding assembly, the outer side of the welding assembly is sleeved with an anti-vortex cover, the side wall of the anti-vortex cover is provided with an air inlet pipe, and the top end of the welding assembly is in transmission connection with a first waterproof motor. A clamping seat is arranged on one side of the first waterproof motor; clamping assemblies are arranged on one side of the base and one side of the clamping base. Pipeline cleaning and welding fixing requirements are considered through the two-stage type clamping assembly, pipe wall attachments are removed in advance in cooperation with the pipeline cleaning assembly, then a dry type welding environment is constructed through cooperation of the anti-vortex cover and the inflation sealing structure, and precise welding is achieved in cooperation with the surrounding type welding assembly; the problems that underwater welding water flow interference is large, clamping is not stable, sealing fails, and the welding seam quality is poor are effectively solved, and the underwater pipeline connector welding device is suitable for efficient and stable welding operation of underwater pipeline connectors.

The utility model relates to the technical field of underwater welding, in particular to a ship underwater welding robot which comprises a robot body, a sealing box is fixed at the rear end of the robot body, an air box is fixed in the robot body, an air pipe is fixed at the rear end of the air box, and an attaching rod is arranged in the robot body. A supporting disc is fixed to the rear end of the attaching rod, a moving rod is arranged at the rear end of the supporting disc, a positioning plate is fixed to the rear end of the moving rod, a laser welding machine is fixed to the rear end of the positioning plate, a welding wire positioning disc is arranged at the left end of the laser welding machine, a water outlet pipe is arranged at the bottom of the sealing box, and a plurality of positioning rods are further arranged outside the robot body. An electromagnet is arranged at the rear end of each positioning rod; a place is provided for welding of the laser welding machine through the sealing box, the sealing ring can guarantee that the whole robot is tightly attached to the position needing to be welded, and therefore it is guaranteed that the interior of the sealing box is dry, and the welding effect is guaranteed.

The application discloses an underwater magnetic field coupling magnetostrictive backfill type friction spot welding device, which comprises a stirring needle, a compression ring, welding material, a compression ring chuck, a top end clamp, a top rod, a cap, an electromagnetic transducer, a magnetic conducting ring, a fixed connecting rod and a water tank; the top end clamp is fixed on the compression ring chuck and cooperates with the internal top rod to fix the welding material at the bottom end of the electric spindle; the fixed connecting rod is sequentially sleeved with the electromagnetic transducer and the cap, and the three are concentrically matched and located at the bottom of the welding point center; the magnetic field energy is converted into electric energy and mechanical energy to the welding point through the electromagnetic transducer. The stirring needle is opposite to the surface of the welding material; the welding material is submerged in the pool of the water tank, and the pool water flow in the water tank is adjusted according to the temperature change; the electronic converter is added at the bottom to improve the temperature distribution of the welding point and the material flow; the underwater welding reduces the heat input and the heat affected zone structure area, and ensures the effective implementation of electromagnetic induction.

This utility model relates to the field of laser welding technology and proposes an underwater welding laser head, including a stainless steel tube cover; a connecting plate fixedly connected to the inner wall of the stainless steel tube cover, one end of which is fixedly connected to the end of the laser welding head; a spray disc fixedly connected to the lower end of the inner wall of the stainless steel tube cover, with spray holes at equal angles at the bottom of the spray disc; a connecting pipe extending to the outside of the stainless steel tube cover fixedly connected to one side of the top of the spray disc, with the bottom end of the connecting pipe communicating with the interior of the spray disc; and a protective cover movably connected to the bottom of the stainless steel tube cover, with fixing components at the top of the protective cover and the bottom of the stainless steel tube cover. Through the spray disc, connecting pipe, and spray holes, an umbrella-shaped protective gas curtain can be sprayed out, ensuring that a small area below the end of the laser welding head is free of water, facilitating welding operations. At the same time, high-pressure gas blows away welding fumes, ensuring smooth welding.

The invention discloses an underwater dry type welding device and an underwater robot, and relates to the technical field of underwater welding. The underwater dry type welding device comprises a housing, a welding assembly and a water draining and gas supplying assembly. A containing cavity is formed in the housing, and one end of the housing is provided with a butt joint opening communicated with the containing cavity and used for being in butt joint with a to-be-welded workpiece. The welding assembly comprises a welding piece and a driving piece, and the driving piece is installed on the housing, is in transmission connection with the welding piece and can drive the welding piece to move in the containing cavity to conduct welding. The water drainage and gas supply assembly comprises a water drainage part and a gas supply part which are both communicated with the containing cavity and control introduction and discharge of water in the cavity and introduction and discharge of protective gas respectively. A closed space for isolating an external water body is defined by the housing and the workpiece, a stable and water-free dry type welding environment is constructed through the water drainage and gas supply assembly, welding automation is achieved through the driving part, the water body is prevented from making contact with a welding arc and a welding pool, the defects of water quenching, hydrogen-induced cracks and the like are reduced, and the operation stability and the welding seam quality of underwater welding are improved.

The application discloses a ship underwater welding seam quality detection device, and relates to the technical field of ship welding seam detection.The device comprises a detector, a gooseneck pipe, a pipe body limiting assembly, an end portion frame, a clamping and fixing assembly and a detection unit.The top end of the detector is provided with a receiving end.The detection unit is fixed below the end portion frame and comprises a camera body, an illuminating lamp and a protective shell.The top of the camera body is provided with a transmitting end and is fixed below the gooseneck pipe.The illuminating lamp is fixed on the camera body.The protective shell is a hollow capsule structure and is fixed outside the camera body.The protective shell is made of transparent silica gel material, is communicated with an external air pump through a pipeline, and protects the camera body through inflation and contraction.The device can realize the technical effects of expanding the detection range, reducing the damage risk of the equipment, improving the detection efficiency and improving the detection accuracy.

The invention relates to the technical field of underwater welding, and provides an underwater oxyacetylene flame preheating integrated welding gun device which solves the technical problems that a preheating device of existing underwater welding equipment is difficult to carry out effective preheating, the operation is tedious in the using process, the simplicity and the convenience are poor, and the using flexibility is poor, the underwater oxyacetylene flame preheating integrated welding gun device comprises a shell, an end cover, a wire feeding welding gun and an oxyacetylene flame gun, the wire feeding welding gun and the oxyacetylene flame gun are connected with the shell and are arranged in parallel, the nozzle and the gun head are arranged adjacently, the oxyacetylene flame gun outputs flames to achieve preheating, and preheating and welding are continuously connected in a space adjacent area. According to the underwater welding device, the welding seam quality, the welding efficiency and the stability can be guaranteed, the underwater welding device is suitable for various underwater operation environments, and reliable welding performance can be provided no matter in a deep sea, a high-pressure water area or a special underwater maintenance environment.

The application discloses an underwater solid-phase additive manufacturing device, which comprises a coaxial underwater dry area mechanism, a shell and an underwater welding torch mechanism. The shell is arranged above the underwater dry area mechanism. The upper half of the underwater welding torch mechanism is arranged in the shell, and the lower half of the underwater welding torch mechanism is arranged in the underwater dry area mechanism. The underwater dry area mechanism can create a local dry area in an underwater environment, the underwater welding torch mechanism can rotate at a high speed, heat is generated through friction to realize underwater solid-phase additive manufacturing, and the underwater welding torch itself is cooled by using the water environment. The application can efficiently carry out solid-phase additive manufacturing in the underwater environment. The application is based on the creation of a local dry area in the underwater environment, and the problems of low deposition efficiency and poor flowability of the deposited layer caused by the too fast heat dissipation of the welding torch and the deposited layer due to the water environment are avoided. The application is also based on active temperature measurement and the water of the external environment to regulate the temperature of the welding torch, and realizes continuous and stable solid-phase additive manufacturing in the underwater environment.

The utility model relates to the technical field of water level gauge installation, in particular to a large underwater structure water level gauge installation device which comprises a base, a balancing weight is fixedly arranged in the center of the interior of the base, an installation frame is fixedly arranged at the upper end of the base through bolts, and a first fixing limiting ring and a second fixing limiting ring are fixedly arranged on the two sides of the installation frame respectively. An elastic mechanism is fixedly arranged on the inner side of the second fixed limiting ring, a movable limiting ring is installed on the surface of the elastic mechanism, and a bubble water level gauge is arranged on the inner side of the movable limiting ring and the inner side of the first fixed limiting ring in a sleeving mode and is installed by adopting the structure that the elastic mechanism is matched with the first fixed limiting ring and the second fixed limiting ring. The installation can be completed only by pressing the movable limiting ring to enable the elastic mechanism to contract, placing the water level gauge and then loosening the water level gauge, complex underwater welding, bolt fixing and other operations are not needed, the installation time is greatly shortened, and the installation efficiency is improved.

The modular multifunctional operation platform comprises a stable clamping platform and an assembling platform, a water jet control module is fixedly installed on the upper surface of the assembling platform, and an underwater welding control module is fixedly installed on the upper surface of the assembling platform; a clamping control and controller module is fixedly installed on the upper surface of the stable clamping platform, and a fixing mechanism is arranged at the joint of every two adjacent platforms. Various operation devices can be replaced and carried at will according to different environments and unexploded ammunition states, each assembly platform can serve as a module to work independently and is not limited by the single function of an execution device, the assembly is assisted to be grabbed, the unexploded ammunition is clamped in the operation process, the position relation between the unexploded ammunition and the robot is more stable, and the working efficiency is improved. And various explosive ordnance disposal tasks can be accurately and efficiently completed.

The invention belongs to the technical field of bridge construction, and particularly relates to a deepwater large-span cable-stayed bridge composite construction method. The method comprises the following steps: firstly, scanning a riverbed through a multi-beam depth finder to generate a three-dimensional geologic model, inputting a tide load spectrum and material mechanics parameters on a BIM platform, simulating open caisson structure deformation and marking a fault zone risk area; after the steel open caisson is prefabricated section by section, a pressure-resistant sealing magnetic levitation module and a hydraulic jack are integrated on the outer wall of the open caisson, a three-dimensional laser scanner is installed on the top, and a dual-mode deviation rectifying system is formed through a water pressure sealing test; during sinking, laser-sonar-inertial navigation multi-source fusion positioning is adopted, the sinking speed is controlled, and collaborative deviation adjustment is achieved through high-frequency fine adjustment of a magnetic levitation module and anchoring deviation correction of a hydraulic jack; a multi-degree-of-freedom mechanical arm is matched with an inert gas local drying cabin, and photoelectric positioning layering is combined to complete welding of the steel jacket box; self-compacting concrete is poured on the bearing platform, temperature is controlled in a zoned mode through pre-buried circulating water pipes and electromagnetic induction heating, and the temperature gradient is monitored in real time through optical fiber sensors; and the problems of structural displacement, welding deformation and concrete temperature overrun are corrected in real time through the sensor network in the whole cycle. The problems of open caisson deflection control, underwater welding sealing failure and mass concrete crack in the deepwater environment are solved, and the construction precision and the structural safety are remarkably improved.

The utility model relates to the technical field of underwater welding, and discloses a telescopic insulating operation arm for underwater welding, which comprises a main base, the top of the main base is fixedly connected with a square waterproof block, and the top of the square waterproof block is fixedly connected with an adjustable operation arm mechanism. The outer portion of the adjustable operation arm structure is fixedly connected with an anti-creeping mechanism, the inner portion of the adjustable operation arm structure is fixedly connected with a telescopic adjusting mechanism, and the top of the adjustable operation arm mechanism is fixedly connected with a welding clamping mechanism. According to the underwater welding device, the telescopic push rod is started to push the telescopic arm to slide, so that the device can adapt to welding of different distances, meanwhile, when the underwater welding device works underwater, the device completes protection on the working angle adjusting motor and the working position adjusting motor with the help of the first waterproof block and the second waterproof block, and therefore the risk of accidents caused by underwater electric leakage is reduced.

The invention discloses a floating type draught fan foundation with impressed current protection and a design method, the floating type draught fan foundation comprises a plurality of stand columns and floating boxes, and the stand columns are fixedly installed on the floating boxes; the system further comprises an impressed current system, the impressed current system comprises a plurality of auxiliary anodes and reference electrodes, and the auxiliary anodes and the reference electrodes are installed on the outer wall of the fan foundation. The power supply device is installed on one of the stand columns, the positive electrode of the power supply device is electrically connected with the auxiliary anodes through cables, the negative electrode of the power supply device is electrically connected with the fan base, and the reference electrode is electrically connected with the power supply device through a cable. The problems that consumption is too fast, underwater supplementary welding installation is needed in the operation and maintenance period and the like due to sacrificial anode corrosion prevention can be solved, and effective corrosion prevention protection of the floating type draught fan foundation in the whole life cycle is achieved.

The invention provides a pile replacing and splicing device, and belongs to the technical field of seabed pile driving engineering, the pile replacing and splicing device comprises an external connecting mechanism and an internal butt joint mechanism, the external connecting mechanism comprises a first lug plate and a second lug plate, the first lug plate is arranged on a pile replacing pile, and the second lug plate is arranged on an engineering pile; a connecting mechanism is detachably connected between the first lug plate and the second lug plate, the internal butt joint mechanism comprises a first connector, a butt joint ring and a second connector, in the connected state, the first connector is located in the pile replacement pile, the second connector is located in the engineering pile, and the two sides of the butt joint ring abut against the end of the pile replacement pile and the end of the engineering pile correspondingly. By arranging the internal butt joint mechanism and the external connecting mechanism, the replacement pile and the engineering pile can be stably connected together, welding and cutting are not needed, cost increase and safety risks caused by underwater welding and cutting are avoided, and the device is simple and stable in structure, convenient and fast to manufacture, high in field use efficiency and high in applicability to the sizes of a pile hammer and a steel pile.

The invention relates to a welding process for computer cabinets with rapid heat conduction and heat dissipation to prevent deformation, comprising the following steps: a liquid storage chamber (2) is set up, the size of which is defined as the size after assembly of the base, top cover, frame, and components (1) to be welded, and the liquid storage chamber contains a working fluid (3); an underwater welding device (4) is provided, the underwater welding device (4) having a welding head (41) that can extend to the liquid storage chamber (2) to perform the welding process at a predetermined distance (L) below the liquid surface of the working fluid (3); a welding fixture (5) is provided to temporarily fix the components (1) to be welded and then insert them into the liquid storage chamber (2);The welding head (41) of the underwater welding apparatus (4) penetrates the working fluid (3) to assemble the components (1) to be welded; and the welding device (5) cools down in the working fluid (3) together with the welded components (1) and they are then removed from the working fluid. Since the heat generated during the welding process is dissipated quickly, deformations are avoided and the quality of the final product is significantly improved.

The application provides a pile-replacing and splicing device, and belongs to the technical field of submarine piling engineering. The device comprises an external connecting mechanism and an internal splicing mechanism. The external connecting mechanism comprises a first ear plate and a second ear plate. The first ear plate is arranged on a replacement pile, and the second ear plate is arranged on an engineering pile. A connecting mechanism is detachably connected between the first ear plate and the second ear plate. The internal splicing mechanism comprises a first joint, a splicing ring and a second joint. In a connected state, the first joint is located inside the replacement pile, the second joint is located inside the engineering pile, and the two sides of the splicing ring abut against the end of the replacement pile and the end of the engineering pile, respectively. The internal splicing mechanism and the external connecting mechanism can stably connect the replacement pile and the engineering pile together without welding and cutting, thereby avoiding the cost increase and safety risks caused by underwater welding and cutting. The device has a simple and stable structure, is convenient to manufacture, has high efficiency in field use, and is suitable for pile hammers and steel piles of various sizes.

The utility model relates to an inflammable underwater welding and cutting strip, which comprises a plurality of flux cores and wrapping pieces sleeved on the flux cores, and further comprises copper plating heads arranged at two ends of the flux cores; the flammable underwater welding and cutting strip comprises a plurality of flux cores and a wrapping piece, the flux cores are arranged on the wrapping piece, the flammable coating is arranged at the end of one of the flux cores, the flux cores are arranged in an annular array mode, the multiple flux cores form an oxygen outlet hole, the wrapping piece comprises a polytetrafluoroethylene tube, a metal layer and a waterproof layer, and the polytetrafluoroethylene tube, the metal layer and the waterproof layer are sequentially arranged on the flux cores in a sleeving mode from inside to outside. Through the copper plating heads arranged at the two ends of the flux cores, stable transmission of current is facilitated, the welding stability is improved, the multiple flux cores are arranged in the annular array, a combustion-supporting agent is arranged in one flux core, and therefore one flux core assists other flux cores in combustion, and the flux cores can be rapidly ignited.

This invention provides an underwater welding stress in-situ measurement device and method based on neutron diffraction. The device includes a wire feeding mechanism, an underwater welding module, a neutron diffraction testing module, a molten pool camera module, and a water supply and drainage system. The underwater welding module includes a welding torch, a robotic arm, and an underwater welding table. The underwater welding table has a welding test chamber. An inclined pressure plate is provided in the welding test chamber. The pressure plate divides the welding test chamber into a water-side chamber and an air-side chamber. The pressure plate is used to press the workpiece. The molten pool camera module is used to acquire welding images. The neutron diffraction testing module includes a neutron incident device and two sets of detectors. The neutron incident device is used to inject a neutron beam into the workpiece test area. The two sets of detectors are respectively set at ±90° positions along the neutron beam diffraction direction. This device can simulate the underwater environment and achieve stable welding, and can acquire stress evolution data of the weld and its surrounding area in real time and continuously during the welding thermal cycle.

The application provides an underwater welding robot and a continuous welding method, which comprises a carrying welding module, a drainage cover and a fixing part, the drainage cover is installed on the carrying welding module, the fixing part is arranged in the drainage cover, and the fixing part extends out through a drainage hole; the underwater welding robot further comprises a passive telescopic mechanism and a displacement mechanism, the passive telescopic mechanism is arranged in the drainage cover, and the displacement mechanism is arranged on the passive telescopic mechanism; and the carrying welding module is a power source for changing the passive telescopic mechanism from a reset state to a contraction state. According to the above structure, the passive telescopic mechanism does not need to be driven by a separate power mechanism, so that the overall structure of the underwater welding robot is simplified, the volume, weight and failure risk are reduced, and meanwhile, the carrying welding module can apply a pushing force to the displacement mechanism to resist the to-be-welded object, so that the stability of displacement is maintained.

The invention provides a multi-limb diagonal bracing reinforcing system for machine changing and capacity increasing of an old single pile foundation and a construction method. The reinforcing system comprises an outer sleeve arranged outside the original single pile foundation in a sleeving mode, a supporting structure and a foundation anchoring structure. Shear keys are arranged on the inner wall of the outer sleeve, the supporting structure comprises supporting seats arranged on the periphery of the outer sleeve and at least three inclined struts, the upper ends of the inclined struts are hinged to the corresponding supporting seats through first pin shafts, and the lower ends of the inclined struts are hinged to the corresponding suction anchors through second pin shafts. Reinforcing girders and a center cylinder which are distributed in a radial mode are arranged below the suction anchor top cover. According to the construction method, grouting locking is conducted between the outer sleeve and the original single-pile foundation, and the outer sleeve and the original single-pile foundation are hinged and matched with the double pin shafts, so that in-situ reinforcement is achieved. According to the invention, the unit load after machine changing and capacity increasing is synergistically shared through multiple components, the overall rigidity of the foundation is improved, the problem that the prior art depends on preset convex rings or underwater welding is solved, the construction alignment precision requirement is reduced, and the method is suitable for reinforcing and transforming the offshore wind turbine foundation.

This invention relates to the field of underwater welding technology and discloses a method and system for modeling and coherently enhancing the error propagation of underwater phased array nonlinear ultrasonic echoes. The method includes: establishing a unified error propagation model encompassing array element amplitude deviation, additional phase error, array element position deviation, and sound velocity disturbance; constructing a channel frequency domain transfer function based on a standard scatterer with known scattering characteristics and compensating for the measured echo; introducing a minimum variance distortionless response beamforming method based on amplitude and phase correction; optimizing the array output power distribution; and achieving real-time updating and stable output of the array channel response based on laboratory calibration and on-site dynamic correction phase calibration mechanisms, and by introducing an environmental correction factor. This invention enables quantitative analysis of the coherent superposition efficiency of nonlinear harmonics and accurate recovery of the amplitude and phase consistency of array channels under complex environments; it can improve the distinguishability of nonlinear harmonic signals and the stability and reliability of detection results in complex underwater environments.

The utility model relates to the technical field of underwater welding equipment, in particular to underwater cutting welding tongs. Comprising a handle, a front end connecting piece arranged at the front end of the handle and used for being connected with a working part, and a cable connector arranged at the rear end of the handle and used for being connected with a cable, the rear end of the welding head and the rear end of the cutting head are each provided with a rear end connecting piece matched with the front end connecting piece. According to the cutting electrode holder, the connector of the underwater cutting head and the connector of the underwater welding head are uniformly arranged at the front end of the handle, a diver can achieve the underwater welding or underwater cutting function by replacing different accessories, and the cutting electrode holder is simple in structure and convenient to use.

The invention relates to the technical field of underwater laser welding, in particular to a laser welding torch special for underwater welding and provided with a transverse vent valve, which comprises a sealing module, a collimation module, a focusing module, a gas distribution module, a drainage module and an optical component, the underwater laser welding torch is composed of a plurality of modules, and the modules are connected through threads. The laser optical assembly is fixed to the corresponding module through a clamping ring, the gas distribution module is provided with a transverse vent valve, and the drainage module is provided with a coaxial observation camera and a silica gel protection cover. According to the laser welding torch special for underwater welding and provided with the transverse vent valve, complete water entry of the laser welding torch and the optical fiber is creatively achieved through the sealing module, protective gas is introduced to the uppermost portion through the transverse vent valve for the first time during underwater positioning, and the influence of drainage bubbles on the underwater view is effectively avoided; the position searching speed is improved; after preliminary locating is completed, a transverse vent valve is closed, protective gas is used for drainage, precise welding locating is conducted through a coaxial observation camera, and real-time monitoring of the welding process is achieved; the silica gel protection cover is used for providing soft contact with the welding surface, the drainage efficiency is improved, fine adjustment of different defocusing amounts is achieved, the requirements of different welding defocusing amounts are met, and the industrial applicability of underwater laser welding can be effectively popularized.

The underwater welding robot comprises a frame module, a buoyancy module, a mechanical arm welding module, a wheel type moving module, a thrust module, a damping ball stability adjusting module, a multi-mode environment sensing module and an electric control module, and the frame module is used for carrying other modules of the welding robot; the buoyancy module provides buoyancy for the welding robot; the mechanical arm welding module is used for executing underwater welding operation; the wheel type moving module is used for moving the welding robot on the surface of the hull; the thrust module is used for enabling the welding robot to be tightly attached to the surface of the ship body and providing multi-degree-of-freedom propelling power for the welding robot; the damping ball stability adjusting module is used for improving the dynamic stability of the welding robot in the water body; the multi-mode environment sensing module is used for the welding robot to detect the underwater environment and avoid obstacles in water. When the robot is close to the surface of the ship body, reliable attachment to the ship body is achieved through thrust adsorption, and in the adsorption state, the thrust module and the wheel type moving module are fused to achieve movement on the surface of the ship body.

The invention discloses an underwater cabin water leakage process repairing device, and belongs to the technical field of underwater welding repairing. The device comprises an out-cabin conical head, a rounding cover plate, an extension plate, a guide screw, a spring, a guide nut, an in-cabin conical tail, a water stop valve and the like. When water leaks from a broken hole in a cabin body, the device is pushed to the broken hole from the inside of the cabin, and the extension plate and the rounding cover plate are pushed to extend outwards by utilizing high pressure generated by a water hammer effect, cover and press the outer side cabin wall of the broken hole, so that temporary plugging is realized. And repair personnel can perform welding repair on the broken hole in the cabin. The emergency repair device is reasonable in structure, convenient to operate and suitable for emergency repair of the underwater cabin in the running process, and the repair efficiency and safety are remarkably improved.

This invention discloses an integrated device and method for underwater weld inspection and laser repair, relating to the field of underwater welding processing technology. The device includes an ultrasonic inspection system, a laser repair system, a drainage system, an inflation system, and a working sealed chamber. The device uses a flexible coupling lip to tightly adhere to the weld surface and maintain the stability of the sealed dry chamber during movement. A miniature suction pump discharges seawater while simultaneously filling the chamber with protective gas to maintain pressure and dryness, providing a dry, oxygen-free environment for laser cladding. The ultrasonic inspection system employs an elastic sliding device to effectively conform to the weld. Integrated intelligent control and underwater visual monitoring enable fully automated operation. A dual-independent, time-sharing collaborative structure allows for physical separation of the inspection and repair mechanisms. This invention effectively improves the accuracy and efficiency of underwater weld inspection and repair, reduces operational risks, and is suitable for weld maintenance of underwater steel structures such as subsea pipelines and offshore platforms, showing broad application prospects.

This invention provides an underwater wire feeder with a wire-cutting mechanism, relating to the field of underwater welding technology. The underwater wire feeder includes a first waterproof sealed housing, within which are a wire storage mechanism for storing welding wire, a wire straightening mechanism for straightening the welding wire, and a wire feeding mechanism. It also includes a second waterproof sealed housing located outside the first waterproof sealed housing, close to the welding station. The second waterproof sealed housing and the first waterproof sealed housing are connected via a wire feeding tube. The second waterproof sealed housing contains a wire-cutting mechanism for cutting the welding wire. If the welding wire adheres to the target structure, obstructing the operation of the welding equipment, the wire-cutting mechanism quickly cuts the welding wire, ensuring the movement of the welding equipment is not affected. Furthermore, when the wire feeding tube bends, causing wire bending, the mechanism quickly cuts and separates the bent welding wire, preserving the unaffected portion, thereby improving the efficiency of underwater welding operations.