1718 results about "Pipe welding" patented technology

The invention provides an intelligent real-time detection method and system for PCCP welding quality, and relates to the technical field of online detection and intelligent evaluation of pipeline welding quality through machine learning. Light energy data and multi-light-source images of a spiral weld pool are collected, exposure parameters are dynamically adjusted through the energy difference of visible light near-infrared bands, and the real-time detection of the PCCP welding quality is achieved. Inhibiting strong light interference and generating a weld surface image; a stress concentration area is positioned by scanning a welding seam thermal deformation area and combining speckle pattern change, sound frequency change and the elastic characteristic of the thin-wall steel cylinder; inputting the surface image and the deformation data into a space-time convolutional neural network, fusing light energy change, image details and spatial features to construct a weld joint space structure diagram, and adaptively correcting the position of a sensor; and comparing the sinking depth of the three-dimensional point cloud reconstruction, analyzing the correlation between the sinking degree and the stress, and generating a probability thermodynamic diagram to output the pressure-bearing failure risk level, so that the probabilistic early warning of the pressure-bearing failure risk can be realized.

The invention relates to the technical field of pipeline welding automation, and discloses a pipeline multi-layer and multi-pass welding track self-adaptive planning method. The method comprises the steps that weld joint track poses, welding electrical parameters and temperature information are collected in real time, and a sliding time window data sequence is constructed; establishing an interlayer constraint model and a trajectory prediction model based on the sequence, and generating a plurality of trajectory deviation predictions through short-term recursive prediction and long-term sequence prediction; a residual error reciprocal weighted fusion strategy is combined with a welding seam forming quality evaluation function, fusion track deviation is obtained, and uncertainty is evaluated; the fusion deviation is superposed to an original planned trajectory, and a self-adaptive correction trajectory is generated through a multi-objective optimization model; and the welding robot is controlled to execute track correction and real-time feedback updating. According to the method, through dual-time scale prediction and trajectory-process parameter collaborative optimization, the problem of insufficient welding seam forming precision caused by lack of dynamic correction in traditional static planning is effectively solved, and the welding quality and efficiency are remarkably improved.

The invention relates to the field of steel pipe welding, and discloses a steel pipe welding device which comprises a workbench, a middle groove is formed in the middle of the upper face of the workbench, multi-directional limiting structures are arranged on the left side and the right side of the upper face of the workbench correspondingly, and U-shaped plates are fastened to the left side and the right side of the upper face of the workbench through bolts correspondingly; a pressing structure is arranged on the U-shaped plate, a rotating structure is arranged above the middle of the interior of the middle groove, abutting limiting structures are arranged on the two sides of the interior of the middle groove, and a collecting frame is arranged on the lower portion of the interior of the workbench. The steel pipes can be pressed on the multi-directional limiting structure, so that the steel pipes in different shapes can be directly limited and pressed, the operation is more labor-saving and convenient, the working cost is low, and the working efficiency is higher.

The invention discloses an automobile tubular part inner wall supporting type laser welding device and technology, and relates to the technical field of automobile tubular part machining, the automobile tubular part inner wall supporting type laser welding device comprises a pipe welding base, an inner wall self-adaption supporting unit and a vertical displacement adjusting assembly, radial guide bases are connected to the two sides of the pipe welding base, and a synchronous servo motor is installed on the outer side of the pipe welding base; an internal driving screw rod and a guide sliding rod drive a stroke frame and a bearing supporting plate to achieve radial positioning of the supporting unit, the inner wall self-adaptive supporting unit comprises a driving cabin and a synchronous power source, transmission is achieved through a lead screw, a transmission fluted disc and a vortex transmission cylinder, a sliding adjusting sleeve is pushed, a supporting rod drives an arc face attaching lining plate to open and attach to the inner wall of the tubular part, and the tubular part is fixed. A vertical displacement adjusting assembly is arranged in a frame supporting beam, a variable frequency motor and a fine adjustment motor drive a guide screw rod and a screw rod correspondingly, alignment of a laser welding head is adjusted, a welding slag collecting groove in the center of a base and a detachable storage box are convenient to remove slag, and the welding machine is suitable for welding of tubular parts of multiple specifications.

The invention provides an intelligent pipeline welding method and system based on data decision, and relates to the technical field of intelligent pipeline welding.The intelligent pipeline welding method comprises the steps that a welding request is responded, a groove image of a to-be-welded pipeline is obtained through an active visual sensor, groove morphology characteristic parameters of the to-be-welded pipeline are determined based on the groove image, and the to-be-welded pipeline is welded according to the groove morphology characteristic parameters. Based on the groove morphology characteristic parameters, corresponding basic layer channel arrangement rules and reference process parameters are determined from a preset layer channel arrangement database, a welding process scheme matched with the current groove is generated in combination with the groove morphology characteristic parameters, and the current groove is welded on the basis of the welding process scheme. And the welding operation is executed in the groove of the to-be-welded pipeline, the technical problems that in the prior art, the global planning capacity is deficient, the deviation correction strategy is locally lagged, and the whole-process accurate control is insufficient are solved, and the effect of improving the stability and reliability of the welding quality of the pipeline is achieved.

The invention provides a pipeline welding all-position welding seam identifying and tracking system and method, and belongs to the technical field of pipeline welding automation. In order to solve the problems of strong arc light interference, low tracking precision, slow response speed and insufficient robustness in the existing pipeline all-position welding tracking technology, the system comprises a sensing layer, a processing layer, a decision-making layer and an execution layer. The welding seam identifying and tracking method comprises the following steps: S1, calibrating the welding seam identifying and tracking system; s2, all-position welding tracking is carried out; and S3, performing adaptive adjustment on different scenes. According to the method, dynamic weighted fusion and fuzzy PID control are adopted, multi-posture welding such as flat welding, vertical position welding, horizontal position welding and overhead position welding can be automatically adapted, parameters do not need to be manually adjusted, and the operation threshold is lowered.

The invention provides an auxiliary device for steel pipe construction welding, and relates to the technical field of pipeline welding, and the auxiliary device comprises two arc-shaped bearing bodies, an auxiliary main frame, an aligning mechanism and a rotary driving system. The central angle of the arc-shaped bearing body is larger than 180 degrees, automatic centering of the steel pipes is achieved through the outer pressing supporting rod assembly and the inner positioning supporting rod assembly, and it is guaranteed that the two sections of steel pipes are concentric. And the welding head mounting seat is connected with the rotary driving piece through the arc-shaped movable clamping body to drive the welding head to continuously rotate around a welding seam, so that high-quality girth welding is completed. The device solves the problems of low centering precision and poor efficiency in traditional welding, has the advantages of high automation degree, high stability, convenience in assembly and disassembly and the like, and is suitable for quick welding of municipal steel pipe engineering.

The invention relates to the technical field of welding assistance, in particular to an auxiliary device for metal pipe welding, which comprises a welding machining table, a sliding groove is formed in the welding machining table, and a first moving frame and a second moving frame are arranged in the sliding groove in a sliding manner; the first moving frame and the second moving frame are each provided with a first through groove allowing a metal pipe to penetrate through, and the first moving frame and the second moving frame are each provided with a sealing mechanism used for sealing the corresponding first through groove. According to the auxiliary device for metal pipe welding, by starting air cylinders on a first fixing frame and a second fixing frame, a laser welding machine is located over a welding seam, and as two second moving frames drive a second annular frame to be attached to the surface of a rotating ring, multiple sealing rings can abut against one another, the welding seam is made to be in a relatively-sealed environment, and the welding seam is welded. At the moment, the welding seam can be located in the space filled with the protective gas without dead angles by introducing the protective gas.

The invention discloses a refrigeration pipe welding positioning method and device. The method comprises the following steps that S1, branch pipes are placed in all storage boxes; s2, the main pipeline is placed in a matching groove of the supporting frame, and the main pipeline is fixed through cooperation with a pressing ring; s3, a third electric cylinder is started, the third electric cylinder drives a supporting frame and the main pipeline to move to be close to the welding gun, and a branch pipe of the main pipeline moves to cross the welding gun; s4, a first electric cylinder is started, and the first electric cylinder drives a synchronous plate and an ejector sleeve to move; the motor, the first chain wheel, the second chain wheel, the chain and the hollow rotating disc are matched to drive the vortex line groove and linear groove linkage adjusting block and the rolling wheel to move, the purposes of clamping positioning and circle center correction of the branch pipe are achieved, the branch pipe is corrected to the position concentric with the disc, the coaxiality of the branch pipe and a main pipeline branch pipe is guaranteed, and the machining efficiency is improved. And the quality problems of insufficient welding, welding skips, poor welding seam forming and the like caused by positioning deviation are avoided.

The invention relates to the technical field of welding, and provides a steel pipe welding auxiliary device for steel furniture production, which comprises an adjusting mechanism, a control mechanism is fixedly mounted on the inner left side of the adjusting mechanism, a fixing mechanism is fixedly mounted at the inner upper end of the adjusting mechanism, and the adjusting mechanism comprises a base, a transmission rod and a gear motor. Mounting bins are fixedly connected to the two sides of the upper end of the base correspondingly, lifting bins are slidably connected to the interiors of the mounting bins correspondingly, first threaded rods are in threaded connection to the lower ends of the lifting bins correspondingly, and first bevel gears are fixedly connected to the lower ends of the first threaded rods correspondingly. Through the cooperation of the adjusting mechanism and the control mechanism, the adjusting mechanism of different welding surfaces at the welding seam is optimized, the height change amplitude of the seam can be effectively controlled, obvious lifting of the seam is avoided, the stability of the welding process and the welding quality are guaranteed, the operation intensity of workers is reduced, and the production efficiency is improved. And the comfort and the convenience in the operation process are improved.

The application discloses a submerged-arc welding straight seam steel pipe pre-welding deviation rectifying device and belongs to the field of steel pipe welding. The submerged-arc welding straight seam steel pipe pre-welding deviation rectifying device comprises supporting legs, the top of the supporting legs is fixedly connected with a working plate, the front end top of the working plate is fixedly installed with a first clamp, the rear end of the first clamp is provided with a second clamp, the right side top of the working plate is provided with a welder, the lower portion of the welder is provided with an alignment assembly, the alignment assembly comprises a supporting plate, the top of the supporting plate is fixedly connected with the bottom of the second clamp, the bottom of the supporting plate is fixedly connected with the top of a sliding block, and the bottom of the sliding block is slidingly connected in a limiting frame. Through the setting of the alignment assembly, the two ends of the pipeline can be centrally aligned when the welder welds the pipeline, and the welding result can be effectively prevented from being affected by the deviation problem during the welding of the steel pipe.

The invention discloses a mitre elbow waist section outer circular seam welding device, and particularly relates to the technical field of mitre elbow welding, which comprises a base, a fixing frame, a chuck for fixing a mitre elbow, a welding head fixing block and a welding head arranged at the top of the welding head fixing block, a central processing unit and a space adjusting mechanism are arranged on the top of the base, the space adjusting mechanism is used for adjusting the space position of the welding head, and the welding device further comprises a space distance collecting module and an included angle collecting module. The problem that in the welding process of the mitre waist elbow pipe multi-section splicing structure, due to weld joint space deviation, a welding head cannot be accurately aligned is solved, the weld joint distance and posture data are collected in real time, the space position of the welding head is dynamically adjusted, and automatic sensing and deviation rectifying of weld joint deviation are achieved; and the welding precision, the welding seam forming quality and the overall welding automation level are effectively improved, and the method is suitable for high-precision welding scenes of various complex pipe fittings.

The invention relates to the technical field of pipeline welding, in particular to a thermal power plant pipeline system circumferential welding device which comprises a positioning and clamping set used for fixing a pipeline and further comprises a position adjusting set which is arranged on one side of the positioning and clamping set and comprises a movable sliding block. And a mounting seat is mounted at the upper end of the sliding block through a plurality of spring telescopic rods. By means of the alignment welding set and the guide reserving sets evenly distributed in the circumferential direction, the moving pipelines can be automatically guided, self-adaptive fine adjustment can be provided in the butt joint process of the two pipelines, the coaxiality can be fed back in real time, it is ensured that the ends of the two pipelines and the supporting ring are coaxially distributed, manual repeated calibration is not needed, and the production efficiency is improved. And in addition, the width of the welding seam between the two pipelines can be determined in the one-time alignment process, a feeler gauge does not need to be used for repeatedly detecting and adjusting the distance between the pipelines, and the pipeline welding efficiency is improved.

The invention discloses a tunnel prefabricated pipeline sending system and a conveying method thereof, and belongs to the technical field of pipeline transportation, the system comprises at least two pipeline conveying trolleys located in a tunnel, and each pipeline conveying trolley comprises a roller base and a bearing assembly connected with the roller base; the bearing assembly is used for supporting a prefabricated pipeline; the conveying device is located outside the tunnel, and the conveying device is used for conveying the prefabricated pipeline into the tunnel; and the pipeline welding equipment is located outside the tunnel, and the pipeline welding equipment is used for welding the multiple pipe sections into the prefabricated pipeline. The prefabricated pipeline is installed outside the tunnel, and the installation efficiency and the installation safety of the prefabricated pipeline are improved; and the prefabricated pipeline outside the tunnel is dragged into the tunnel, the pipeline is fixed in the tunnel, and rapid installation and fixation of the pipeline in the tunnel are achieved.

The invention belongs to the technical field of welding process optimization, provides a pipeline welding parameter optimization method and system for natural gas conveying system construction, and is used for solving the technical problems of high hydrogen-induced cracking risk, parameter dependence on artificial experience and optimization process isolation lag in shallow hydrogen natural gas conveying pipeline welding. According to the method, a visual image of a molten pool, a joint thermal field, electric arc electrical parameters and environmental data are synchronously collected through a multi-source sensor, a hydrogen diffusion-thermal coupling model is constructed to calculate hydrogen concentration and stress, after reference parameters of a knowledge base are called, current, voltage and speed adjustment amounts are generated through a GBDT algorithm, and then real-time correction is conducted through a closed-loop module. According to the method, hydrogen-induced cracking can be quantitatively prevented and controlled, the weld joint failure probability in the shallow hydrogen environment is reduced, the process robustness and quality consistency are improved, the safe service life of the pipeline is effectively prolonged, and the high-safety energy conveying requirement is met.

The application belongs to the technical field of welding, and particularly relates to a pipe welding device for butt welding of self-positioning pipes. The following scheme is proposed and comprises a welding table, a butt joint mechanism, two top fixing mechanisms and a welding mechanism. The butt joint mechanism is fixed on the welding table, the two top fixing mechanisms are arranged on the two sides of the butt joint mechanism, the welding mechanism is fixed on the top of the welding table, and the top of the welding table is provided with a side edge fixing mechanism. The side edge fixing mechanism comprises a transmission assembly, a support frame, a rotary table, a guide rod, a push plate, a support plate, a side edge support seat and a side edge butt joint plate. One end of the support frame is fixed on the side edge of the butt joint mechanism, and the rotary table is rotationally connected in the support frame. The application can effectively improve the butt joint effect of the pipes, so as to facilitate the welding of the two pipes, prevent the misalignment of the two pipes during butt joint due to the poor fixing effect of the pipes, and thus affect the welding of the pipes.

The utility model relates to the technical field of welding devices, and discloses a thin-wall copper pipe welding device which comprises a working table, the top of the working table is fixedly connected with a welding frame, the side wall of the working table is fixedly connected with a first servo motor, the output end of the first servo motor is fixedly connected with a first threaded rod, and the output end of the first threaded rod is fixedly connected with a second threaded rod. The outer surface of the first threaded rod is in threaded connection with a moving block, the top of the moving block is fixedly connected with a moving plate, and the side wall of the moving plate is fixedly connected with a second servo motor. According to the pipeline welding part polishing device, through the buffer block, the connecting rod, the stabilizing frame, the reset spring and the polishing block, the stabilizing frame is used for supporting a welding part, meanwhile, the polishing block is used for polishing the welding part of a pipeline, and the situation that workers are injured in the taking process due to the fact that the welding part is inconvenient to polish is avoided; and the working efficiency of the welding device is improved.

The invention relates to the technical field of welding, in particular to a self-adaptive fusion steel pipe welding seam tracking method and system.The method comprises the following steps that a visual sensing subsystem collects a welding seam original laser image of a steel pipe welding plane in real time, and the transverse deviation of a welding gun of the visual sensing subsystem is calculated; the arc sensing subsystem collects original welding current signals in real time for filtering processing, and the transverse deviation of a welding gun of the arc sensing subsystem is calculated; the decision fusion subsystem performs dynamic multi-working-condition optimal fusion on the welding gun transverse deviation of the visual sensing subsystem and the welding gun transverse deviation of the electric arc sensing subsystem to obtain a final welding gun deviation value; and the executing mechanism drives the welding gun to act according to the final welding gun deviation value, and accurate tracking of the steel pipe welding seam is achieved. According to the method and the system provided by the invention, the information of the visual sensing subsystem and the electric arc sensing subsystem is fused, the steel pipe welding seam is tracked based on visual and electric arc composite sensing, and the precision and the reliability of welding seam tracking are greatly improved.

The invention provides a pipeline welding method and system fusing teleoperation teaching and visual recognition. The method comprises the steps that discrete key point positions in a pipeline welding seam path picked up by teleoperation equipment teaching are obtained; generating an initial welding track by using a track interpolation method based on the key point location; a guide point is generated based on three-dimensional contour data, collected when a line laser contour sensor scans along the initial welding track, of an actual pipeline welding seam; the deviation value between the guide point and a corresponding track point on the initial welding track is obtained, and the initial welding track is compensated and corrected according to the deviation value to generate an actual welding track; and the welding robot is controlled to execute multi-layer welding operation along the actual welding track. According to the method, the experience of people and the precision of laser vision are combined, the planning efficiency and the track precision of the welding path are remarkably improved, and the welding quality and the operation safety of the pipeline under the severe working condition are guaranteed.

The invention discloses a pipe welder online inner crator and burr removing equipment device, and relates to the technical field of steel pipe welding, the pipe welder online inner crator and burr removing equipment device comprises a fixing frame, two sliding rails are symmetrically and fixedly mounted at the top of the fixing frame, a plurality of mounting frames and moving frames are slidably mounted at the tops of the two sliding rails respectively, and the mounting frames and the sliding rails are fixed through bolts; and a feeding mechanism, a delivery mechanism and a conveying mechanism are arranged on one side of each of the multiple mounting frames and the movable frame. A second air cylinder, a lead screw and a crank of the high-pressure inner burr blowing mechanism can adjust the position of an air nozzle body, adapt to steel pipes of different specifications and cooperate with a first air cylinder and a lower pressing plate to achieve stable positioning, and inner burrs are efficiently removed; a fourth motor, a sixth gear and a rack of the driving mechanism drive a moving frame to slide along a sliding rail to flexibly adapt to steel pipes with different lengths; a first gear, a second gear and a third gear of the delivery mechanism are linked to drive a first clamping piece on a moving plate to synchronously transfer multiple sets of steel pipes, and it is guaranteed that the rhythms of all procedures are matched.

The invention relates to the technical field of automatic welding of pipe fittings, and provides automatic welding equipment for hubbed butt welding flanges for pipe fittings, which comprises a workbench, and the workbench is provided with a roller assembly, two clamping assemblies, a flange feeding assembly, a pipe fitting feeding assembly, a receiving box and a welding assembly, the rolling wheel assembly is located between the two clamping assemblies, the flange feeding assembly and the pipe fitting feeding assembly are located on one side of the rolling wheel assembly and the clamping assemblies, and the material collecting box is located on the other side of the rolling wheel assembly and the clamping assemblies. The pipe fitting is moved through the roller assembly, the center of the pipe fitting is aligned with the center of the three-jaw chuck, alignment is not needed during welding, and therefore the adjusting time is saved, and the efficiency is improved; a plurality of pipe fittings and flanges are stored in a fixed-axis mode through the flange feeding assembly and the pipe fitting feeding assembly, convenience is provided for welding, the adjusting time is shortened, and the efficiency is improved.

The invention discloses a steel pipe welding positioning and correcting method based on laser ranging, which belongs to the field of steel pipe welding and comprises the following steps: clamping and moving a to-be-welded steel pipe to an automatic welding unit through a mechanical arm; image acquisition is performed on the to-be-welded steel pipe, and a welding starting point is positioned; a target laser range finder is activated, space positioning is conducted on a welding starting point, and welding position parameters are obtained; welding gun position parameters of the welding robot are obtained; a welding gun displacement track is analyzed and generated; welding track correction is conducted, and a welding moving path is obtained; and the welding robot is subjected to combined control, and automatic welding is completed. The technical problems that in the prior art, in the steel pipe welding process, the positioning precision is insufficient, different entering angles are difficult to adapt, and weld joint deviation caused by deformation in the welding process is solved, the steel pipe welding positioning precision is improved, automatic tracking welding of entering steel pipes at any angle is achieved, and the welding efficiency is improved. And the position of the welding seam is corrected in real time in the welding process.

The application discloses a large pipe welding device and relates to the technical field of pipe welding. The device comprises a welding table, two parallel guide rails fixedly connected to the top surface of the welding table, movable pipe pushers arranged at the two ends of the guide rails, and support members arranged on the two sides of the welding table and used for supporting the pipe. When the large pipe welding device supports the large pipe, the first support device and the second support device on the two sides of the welding table support the large pipe. When the large pipe is supported, the straight surface of the special-shaped support block faces the outer wall of the large pipe, the rotating rod one which is perpendicular to the large pipe rolls against the pipe wall, the pipe pusher facilitates the transverse movement of the large pipe, the two ends of the large pipe to be welded are aligned, the special-shaped support block is rotated during welding, the rotating rod two of the arc surface of the special-shaped support block rolls against the large pipe, the pipe pusher facilitates the rotation of the large pipe, and the ring seam welding is realized.

The invention relates to a pipe laser welding device for building construction, and belongs to the technical field of pipe welding, the pipe laser welding device comprises a frame body assembly, a laser welding machine, a pretreatment assembly, an adjusting assembly and a pipe fixing assembly, the frame body assembly is composed of a table body with a notch formed in one side of the upper surface, and a supporting frame is installed in the table body; the laser welding machine is fixedly installed on one side of the upper surface of the table body, the pretreatment assembly is fixedly installed in the table body, the adjusting assemblies are symmetrically distributed on the two sides of the pretreatment assembly, and the pipe fixing assemblies are installed at the movable ends of the upper portions of the adjusting assemblies. According to the pipe welding device, the pipe is driven to rotate, moves up and down and left and right and drives the pipe to rotate, a grinding wheel and a polishing brush are adopted for pretreatment in the pretreatment assembly, the smoothness of the position of a welding end is improved, then the butt joint effect of the welding end face is improved in the subsequent welding process, and the welding effect is improved by enabling the pipe to rotate to form the circumferential laser welding effect in the welding process.

The invention discloses a thin-wall stainless steel pipe welding seam polishing device, and belongs to the technical field of metal processing machine tools, the thin-wall stainless steel pipe welding seam polishing device comprises a main shaft, a through hole used for containing a thin-wall steel pipe to be polished is formed in the middle of the main shaft, a clamping groove is formed in the circumferential side wall of the through hole, and an electromagnetic strip is movably embedded in the clamping groove; and the ejector rod is coaxially opposite to the through hole and is driven by an ejector rod sliding table to be horizontally close to or far away from the main shaft. By means of the highly-integrated dual-mode power relay part, integration and rapid lossless switching of the grinding function and the ultrasonic peening function are achieved, the two working procedures are combined into one, the production efficiency is greatly improved, and positioning errors caused by multiple times of clamping are avoided.

An assisted machining apparatus for pipe welding, which relates to the technical field of assisted machining for welding and comprises a positioning unit (100), which comprises a driving assembly (101), two movable pressing assemblies (102) symmetrically arranged at two ends of the driving assembly (101), a limiting assembly (103) arranged at one end of each movable pressing assembly (102), a locking assembly (104) arranged outside of each limiting assembly (103), and a protection assembly (105) arranged at one end of each limiting assembly (104). The positioning unit (100) is provided to activate the driving assembly (101) to drive the two movable pressing assemblies (102) to each move toward the middle until a pushing rod (102b) is in contact with a contraction member (104f) and pushes the contraction member (104f) to pull the locking assembly (104) fixedly connected at the top to move toward the middle and release the limiting assembly (103) from a locked state. When the movement continues until the movable pressing assemblies (102) are each engaged inside of a locking assembly (104), the contraction member (104f), pushed by an unlocking rod (104f-8), is unlocked from a locked state and then loses contact with the pushing rod (102b), and the locking assembly (104) returns to the initial position to lock the limiting assembly (103) and the movable pressing assembly (102) that are in an engaged state, thus improving the accuracy of positioning in the radial direction during pipe docking. Each protection assembly (105), pushed by the movement of a locking assembly (104), is completely unfolded to achieve locking by means of engagement, and protect against strong light and spatter generated during welding.

The invention provides a pipeline welding windproof device and a using method thereof.The pipeline welding windproof device comprises a windproof cover and two hoops, each hoop is composed of two semicircular hoop bodies which are in butt joint through a fastener and used for clamping a pipeline, the windproof cover is an arc cover with the arc length larger than that of a semicircle, and the two ends of the windproof cover are each provided with two symmetrical rotary connecting pieces capable of being pulled outwards; the opposite ends of the rotary connecting piece capable of being pulled outwards are in sliding connection through hoops, so that the windproof cover can rotate around the hoops and can be detachably fixed to the middles of the two semicircular hoop bodies, after fastening between the semicircular hoop bodies is removed, the semicircular hoop bodies are separated towards the two sides, the two ends of the windproof cover are each provided with an end cover capable of being turned over, and the two ends of the windproof cover are provided with end covers capable of being turned over. The end cover is used for preventing wind at the end of the hoop and can be turned upwards, and detachable sliding fit is formed between the end cover and the side face of the hoop. By the adoption of the design that the separable hoop is matched with the connecting piece capable of being pulled outwards and rotated, the windproof device can be rapidly installed along the pipeline in a penetrating mode under the condition that installed welding equipment is not disassembled, and the operation efficiency is remarkably improved.

The invention discloses a magnetic attraction synchronous walking type inert gas protection titanium alloy pipe welding robot which comprises a titanium alloy pipe to be welded, an active welding robot, a follow-up inert gas protection robot and a mechanical arm. After the two titanium alloy to-be-welded pipes are coaxially spliced, a circle of to-be-welded seam is formed at the splicing position; the active welding robot walks and is attached to the outer wall face of a titanium alloy to-be-welded pipe under connection of the mechanical arm, the follow-up inert gas protection robot walks and is attached to the inner wall of the titanium alloy to-be-welded pipe, and the follow-up inert gas protection robot and the active welding robot magnetically attract each other through a magnetic attraction device. The follow-up inert gas protection robot follows the active welding robot under the action of magnetic force; and no oxidation of a welding area is realized in an invisible pipeline by the equipment.

The invention belongs to the technical field of thermal insulation pipe welding, and particularly relates to a thermal insulation pipe end welding device and an operation method thereof.The welding device comprises a welding gun and an outer supporting frame arranged on the ground, the outer supporting frame is used for supporting a pipeline, and the welding device further comprises a fixing rod and a set of inner supporting mechanisms arranged on the fixing rod; the two adjacent pipelines are placed on the outer supporting frame, the inner supporting mechanism sequentially penetrates into the two adjacent pipelines and is opened to be attached to the inner walls of the pipelines to be used for supporting the pipelines and centering the pipelines, the welding ends of the two adjacent pipelines are adjacent to the welding gun, centering and gap adjustment between the pipelines can be automatically achieved, manual participation is not needed, and the welding efficiency is improved. And the improvement of the welding quality between the pipelines is facilitated.

The invention relates to a municipal heat distribution pipeline welding positioning device and method, and relates to the technical field of pipeline welding auxiliary equipment. Comprising a positioning frame, the positioning frame comprises a base and a fixing seat, the fixing seat comprises two n-shaped frames, and the two n-shaped frames are connected through a supporting rod. The positioning frame is provided with a clamping unit for positioning and fixing a pipeline; and the synchronization unit facilitates cooperative work of a plurality of positioning frames. According to the pipeline welding assisting device, the following problems existing in the pipeline welding assisting process in the prior art can be solved: the matching blocks of the synchronization units can horizontally rotate, the horizontal included angle between the multiple positioning frames can be flexibly changed in combination with height adjustment of the multi-stage telescopic rods, and the design trend of a bent pipe is accurately reproduced; the problem that a traditional device lacks a bent pipe angle adjusting and fixing mechanism is solved. And through synchronous adjustment of a first clamping jaw, a second clamping jaw and a third clamping jaw in the clamping unit, automatic centering of the pipelines is achieved, and it is guaranteed that the coaxiality of the two pipelines is consistent with the distance of the welding position.