256 results about "Pipe welding" patented technology

The application relates to the field of pipeline welding, in particular to a pipeline efficient welding device integrating centering and clamping functions, which comprises a rotating disc and two groups of pipelines movably sleeved in the rotating disc, the outer surface of the rotating disc is provided with push clutches, the inner wall surface of the rotating disc is fixedly installed with four groups of hydraulic rods II, the output ends of the hydraulic rods II are provided with abutting positioning plates movably sleeved on the outer surfaces of the pipelines. When the butt joint between the two pipelines deviates, the hydraulic rod III moves the sliding block, and the swing plate at the end of the supporting arm is tightly abutted on the surface of the pipeline; when the swing plate is pushed, the swing plate cannot move on the surface of the pipeline due to the antiskid property and adhesive material of the polyurethane antiskid layer; when the sliding block slides in the supporting frame II, the supporting arm pushes the swing plate, the swing plate is continuously raised, and the pipeline on one side of the rotating disc is slightly tilted.

The application discloses a butt joint device for pipeline welding and belongs to the technical field of pipeline welding, which comprises a holding mechanism and a butt joint mechanism. The holding mechanism comprises two holding arc plates which are hingedly connected, and arc-shaped insertion grooves are formed in the holding arc plates. The butt joint mechanism comprises two butt joint outer plates which are hingedly connected, and a butt joint inner plate which is movably inserted into the butt joint outer plates and is slidably matched with the arc-shaped insertion grooves. Welding ports are formed in the butt joint outer plates in a penetrating manner. In the scheme, the holding mechanism and the butt joint mechanism are connected, so that the pipelines on both sides can be centrally positioned, the operation of assisting in the central positioning of the pipelines by additional workers is avoided, the central positioning error can be greatly reduced, the conditions such as incomplete welding and large butt joint ports in the pipeline welding are prevented, and the welding quality is improved. One person can operate the butt joint device, the labor cost and a large amount of time are saved, the construction efficiency is remarkably improved, the construction period is reduced, and the butt joint device has great popularization and application values.

A kind of 1000MPa grade pressure steel pipe welding is opened slope device, including chuck fixed component, rotating assembly, angle adjusting assembly and polishing device, wherein: rotating assembly is arranged on chuck fixed component, angle adjusting assembly for adjusting cutting angle is arranged in the inside of rotating assembly, polishing device is arranged in angle adjusting assembly execution end.The chuck fixed component can be fixed concentrically in the circumferential direction of steel pipe by being set, and the cutting assembly can be driven to rotate in the circumferential direction of steel pipe by being set rotating assembly, and then the purpose of opening slope is achieved, so that the opening slope method will make the opening slope surface smooth and neat, not convenient for welding, and the device body is relatively small, easy to carry.And by setting angle adjusting assembly, the angle of opening slope can be adjusted, and the opening slope effect is enhanced.

This utility model relates to the field of steel pipe welding protective gear technology, and in particular to a protective device for steel pipe welding, including a head cap, a brim plate fixedly connected to the front end of the head cap, a protective face shield assembly fixedly connected to the bottom end of the brim plate, a rotating protective mechanism installed inside the protective face shield assembly, and a grooved cover plate fixed to the back of the protective face shield assembly by bolts; the protective face shield assembly includes a face shield body, an adjusting shaft rotatably connected to the bottom of the inner side of the face shield body, a half gear fixedly connected to one end of the adjusting shaft, a support spring rotatably connected to the middle of the inner side of the adjusting shaft, and a connecting mechanism fixedly connected to the center of the inner side of the face shield body. This utility model significantly improves the clarity of vision and ease of operation during the welding process, can quickly restore a clear field of vision, and has high angle adjustment accuracy, avoiding the tedious process of traditional on-site cleaning and wiping, and greatly improving the overall efficiency of welding work.

This invention discloses a welding device and process for steel manufacturing, relating to the field of steel pipe welding technology. The device includes: a rotating base on which a steel pipe body is centrally placed; an outer welding mechanism is circumferentially mounted on the rotating base; and a liftable inner welding mechanism is suspended above the rotating base. The inner welding mechanism includes an annular shell, an annular barrier, a telescopic component, a drive mechanism, a contact mechanism, a movable frame with a polishing wheel, and an inner welding gun. The annular shell and the annular barrier are coaxially arranged and connected by a rotatable telescopic component. The movable end of the telescopic component extends to the outside of the annular barrier and connects to the movable frame. The inner welding gun is mounted on the movable frame, and the drive mechanism is installed between the annular shell and the polishing wheel. This invention solves the problem of difficult welding on the inner side of steel pipes by coordinating the inner and outer welding mechanisms, and integrates grinding, welding, and polishing processes into one, significantly improving processing efficiency and weld quality.

The utility model discloses a kind of auxiliary tool convenient for pipe welding, it is related to pipeline welding technical field, specifically a kind of auxiliary tool convenient for pipe welding, including mobile support, top plate and roller stand, the mobile support is provided with two groups, and is dynamically connected with adjusting mechanism on mobile support, the bottom of top plate is equipped with universal wheel, roller stand is installed on the surface of mobile support, one side of roller is provided with start-stop mechanism, and one end of sliding seat is detachably connected with support clamping seat. The auxiliary tool convenient for pipe welding, by adopting the setting of support clamping seat and level, the effect of quick and accurate butt joint is realized, the welding efficiency is improved, by the detachable setting of adjusting mechanism and connecting sleeve and sliding seat, the purpose of improving the applicability of the device is achieved, by the setting of start-stop mechanism, the roller can be frictionally fixed during use, prevent the pipe box from rotating during welding, improve the welding quality.

The application discloses a pipeline welding execution method and a testing machine in a mountainous environment and relates to the technical field of pipeline welding. The pipeline welding execution method in the mountainous environment comprises a testing machine, the testing machine is provided with a pendulum, the pendulum is provided with a force sensor, and the pipeline welding execution method further comprises the following methods: test piece preparation, testing machine preparation, starting test and selecting a welding mode. The testing machine comprises a test main body, the test main body is provided with a protractor, a test table and a protection frame, the pendulum is provided with the force sensor for recording an impact dynamic process, the pendulum is connected with the test main body, the test table is placed with a pipeline test piece aligned with the pendulum, the pendulum comprises a swing arm and a U-shaped hammer head connected with each other, the U-shaped hammer head is provided with a pair of detachable counterweights on the front face and the back face, and the U-shaped hammer head is provided with a striker for impacting the test main body in a groove. The pipeline welding execution method and the testing machine in the mountainous environment have the beneficial effects that a correct welding mode is adopted, and the service life of the pipeline is longer.

The utility model relates to the field of pipe fitting welding discloses a pipe fitting welding device, including mutually perpendicular first guide station and second guide station, first guide station and second guide station are slidably provided with the mounting seat for installing pipe fitting, the welding mechanism for welding pipe fitting respectively on, the mounting seat includes the mounting plate of sliding setting in the first guide station, the mounting part of detachable connection in the mounting plate, and the mounting part is used for installing the pipe fitting in the mounting plate, through setting up mutually perpendicular first guide station and second guide station, through the mounting seat, the pipe fitting to be welded is fixed in the mounting seat, and is spliced at the welding, and the second guide station drives the welding mechanism to reciprocate and heat at the weld, can effectively avoid the problem that the local temperature is too high at the weld, thereby improving the welding quality, in addition, through several kinds of detachable mounting parts, different mounting parts can be selected and installed according to different pipe fittings, and the selectivity of pipe fitting welding can be improved.

The application discloses a kind of preferred methods of welding technology in mountainous environment, it is related to workpiece welding technical field;Including the following steps: target mountainous welding pipeline is sampled in situ, and welding material is obtained;Welding material is welded using multiple welding technologies, to obtain the welding joint corresponding to each welding technology;Welding joint is detected in structure and performance;According to the detection result, the preferred standard of each welding technology is determined.The preferred method of welding technology in mountainous environment provided by the application first obtains welding material by sampling target mountainous welding pipeline in situ, to restore mountain pipeline welding environment truly, guarantee the accuracy of detection and analysis;Then welding material is welded using multiple welding technologies, to obtain the welding joint corresponding to each welding technology, then welding joint is detected in structure and performance, and the preferred standard of each welding technology is determined according to the detection result, to provide reliable automated selection method for engineering project managers, site construction.

This invention discloses a welding alignment device and method for large-diameter pipes. The large-diameter pipe welding alignment device includes a central base, with a traveling mechanism arranged circumferentially around the central base. A central shaft is located at the center of the central base and is rotatably connected to the central base. Multiple primary positioning mechanisms are evenly arranged around the central shaft, each primary positioning mechanism including a primary positioning seat parallel to the central shaft, which is connected to the central shaft via a parallelogram linkage mechanism. Each primary positioning seat has a secondary positioning mechanism, including a secondary first positioning mechanism corresponding to a first pipe to be welded and a secondary second positioning mechanism corresponding to a second pipe to be welded. This invention is designed for large-diameter pipes, achieving alignment of two pipes to be welded from within the pipe itself. It occupies a small area and can be applied on-site.

The present application relates to the technical field of detection equipment, and more particularly to a seamless stainless steel pipe welding defect sensing and detection equipment, which comprises a rack, one side of the upper end of the rack is provided with a three-jaw chuck, the other side of the upper end of the rack is fixedly connected with a detection ring seat, one side of the rack is fixedly connected with a fixing frame, the fixing frame is fixedly connected with a feeding assembly, the bottom end of the fixing frame is fixedly connected with a pre-buried seat, a discharging chute is fixedly connected through the middle of the rack, and a material receiving assembly is symmetrically arranged above the discharging chute. Through the feeding assembly, the steel pipe on the ground can be automatically conveyed into the material receiving assembly and fixed by the three-jaw chuck, manual carrying is not needed, the demand for manual carrying is reduced, the work intensity of workers is reduced, and when the feeding assembly is retracted to the reset position, the protective plate on the pre-buried seat can be automatically closed, the workers are prevented from stumbling, the safety is improved, the efficiency is improved, the time is saved, the cost is reduced, and the product quality is steadily improved.

The utility model belongs to pipe welding machine technical field, specifically disclose a kind of for pipe welding machine's non-stop horizontal feeding machine, including device ontology, the side fixedly connected with support plate of device ontology, the upper surface of support plate is fixedly connected with motor, the output of motor is fixedly connected with second gear, the inside rotationally connected with transmission rod of device ontology, when using in the application, utilize motor drive second gear to rotate, make second gear and first gear engage transmission, respectively make two transmission rods rotate, two transmission rods drive two screw rods to rotate inside support rod, wherein the transmission effect occurs between the outer surface of screw rod and the inside of one end of friction roller, while transmission rod drives second slider to make friction roller rotate, friction roller occurs axial movement on the surface of screw rod, so that the surface of friction roller to material not only occurs rotation cleaning, also carries out axial movement cleaning, so that the surface cleaning to material is more clean.

The utility model relates to steel pipe welding technical field, and disclose steel pipe welding auxiliary fixing tool, including bottom plate, the side of bottom plate is equipped with the adjustable adjusting plate of bottom plate length direction position, adjusting plate moves through the positioning mechanism restriction adjusting plate, the upper surface fixed connection of bottom plate has the positioning plate for positioning steel pipe position, the upper surface fixed connection of adjusting plate has first fixed plate and extension board, the side of positioning plate and first fixed plate all fixed connection has the compact mechanism for with fixed steel pipe, one side of extension board is equipped with the vertical fixing mechanism for with fixed vertical direction's steel pipe, the utility model provides steel pipe welding auxiliary fixing tool, through the cooperation setting of positioning plate, first fixed plate and compact mechanism, when welding to two section steel pipes, can be more convenient to the positioning and fixed of two section steel pipes, reduce the shaking of steel pipe in the welding process, improve the welding efficiency of steel pipe.

This utility model discloses a positioning clamp for welding refrigerant pipes in air source water heaters, relating to the field of pipe installation technology. The utility model includes a base and a pipe. Two limiting plates are fixedly connected to the top of the base. It also includes: a positioning mechanism disposed on the top of the base, used to align the pipe with other pipes; and a fixing mechanism disposed on the top of the base, used to fix the positioning mechanism. Specifically, this utility model uses a positioning mechanism where a cylinder is activated to continuously move the pipe vertically via a support plate, thereby changing the pipe's height and aligning the positioning hole of the pipe with a positioning pin. After alignment, an electric push rod is driven to mechanically insert the positioning pin into the positioning hole of the pipe. This not only maintains the stability of the pipe axis but also greatly improves the welding quality.

This invention discloses a pipe welding device and method, belonging to the field of pipe welding technology. It mainly includes a support and guide assembly, a displacement clamping assembly, a welding assembly, a shielding assembly with a deformable drag shield, and a drive assembly equipped with a main drive shaft, a rigid cam, a flexible cam, and an overload friction structure. The main drive shaft drives the two cams to synchronously press the deformable drag shield. When the drag shield abuts against the pipe wall, generating a reverse torque greater than the maximum static friction torque, the flexible cam slips and stops rotating via the overload friction structure, while the rigid cam continues to press down. The dynamic differential stroke formed on both sides forces the deformable drag shield to flexibly bend and adaptively and tightly conform to different pipe walls. This invention solves the defects of traditional rigid drag shields, such as fixed curvature, frequent replacement of spare parts, and air leakage. It achieves automatic morphological wrapping of multi-specification pipe fittings and high-quality flexible laminar gas protection, improving welding efficiency.

The application belongs to the technical field of plasma arc positioning welding, in particular to a positioning device for metal pipeline welding, which comprises a working base plate, a moving support frame and a multi-axis welding mechanical arm, the end of the multi-axis welding mechanical arm is fixedly provided with a plasma arc welding head, the welding station comprises a circular arc strip plate and positioning members one and two movably installed on the inner side of the top of the circular arc strip plate, the metal belt in the form of a ring outside the clamping structure is wound, the diameter of the ring is reduced, gradually adheres to the outer side of the curved part of the L-shaped metal pipe, when the metal belt is gradually tightened, the metal belt is inclined and closely adheres to the outer side of the curved part of the L-shaped metal pipe, and the clamping structure abuts against the outer side of the curved part of the L-shaped metal pipe, because the positioning member one and the positioning member two are arranged in the same way, the positioning member one and the positioning member two will exert a cross tension on the curved part of the L-shaped metal pipe, thereby positioning the curved part of the L-shaped metal pipe.

This invention relates to the field of wear-resistant pipe welding, specifically to a wear-resistant pipe circumferential welding device. The device includes a base with a sliding support platform on its upper end. Clamps are symmetrically arranged at one end of the support platform. Each set of clamps includes an inner edge clamping member and an outer edge clamping member arranged opposite each other, enabling bidirectional end-face positioning and fixation of the curved wear-resistant pipe end. A double-end welding mechanism is located on the side of the support platform near the clamps. The double-end welding mechanism includes two coaxially rotating trays with radial clearance notches. Welding torches are mounted on the facing end faces of the trays. The two welding torches can be adjusted to an initial position with a 180° included angle, and rotate synchronously and in the same direction with the trays to complete the circumferential welding of the curved wear-resistant pipe. This device offers high clamping and positioning accuracy for curved wear-resistant pipes, effectively suppressing welding deformation, significantly improving welding quality and work efficiency, and solving the technical problems of clamping instability, low coaxiality accuracy, and large welding deformation in existing technologies for welding curved wear-resistant pipes.

The utility model discloses a kind of butt joint of different diameter steel pipe joint welder, belong to steel pipe welding technical field, including base, rotating circular pipe for butt joint of different diameter steel pipe and be used for the welding machine of butt joint weld of different diameter steel pipe, the inside fixedly connected with second fixed plate of rotating circular pipe, the side of second fixed plate is equipped with second motor, the output fixedly connected with round gear of second motor, the side of round gear is engaged with rack slidingly connected with rotating disc, the downside fixedly connected with support plate of rack, the side of support plate away from rack is equipped with press switch, the device is rotated by second motor and drives round gear, rack is moved, rack moves and support plate moves, support plate supports inside steel pipe, and different diameter steel pipe is fixed at the same center.

This utility model discloses a thin-walled stainless steel pipe welding equipment, relating to the field of stainless steel pipe welding technology. The equipment includes a base with a rotating groove on its upper surface. A positioning shaft is located inside the rotating groove, with both ends of the positioning shaft welded and fixed to the inner walls of both sides of the rotating groove. Multiple fixing components are slidably connected to the outside of the positioning shaft. A movable groove is located on the front surface of the base, penetrating the base and communicating with the rotating groove. This solution solves the problem that existing stainless steel pipe welding methods, which use fixed structures at both ends for fixing, require disassembling the fixing structures and adjusting the position before welding. This necessitates removing the stainless steel pipe, which is time-consuming and labor-intensive. Furthermore, this adjustment alters the original orientation of the fixed stainless steel pipe, leading to poor accuracy and uniformity during subsequent welding.

The application discloses a sandbank short-distance entry section pipe-pulling construction method, which comprises the following steps: S1, preparation before construction; S2, measurement and lofting; S3, well chamber foundation pit construction; S4, equipment positioning and guide drilling; S5, hole expansion and mud hole blocking; S6, secondary hole expansion and hole cleaning; S7, pipe welding, pipe pulling back, and high-pressure grouting; S8, mud cleaning, pipe cutting at the well access, and equipment transfer; and S9, well chamber construction, foundation pit backfilling and cleaning. The application makes full use of the sandbank short-distance entry section pipe-pulling construction method, reasonably uses the trenchless technology to solve the problems of one-end construction site obstruction, pipe-pulling pipe hole forming failure, pipe-pulling construction resistance being too large, pipe deformation being affected by flowing sand and water level, sand surface appearing grouting and settlement, and the like, solves the problems of high cost and inability to carry out pipe jacking construction under the condition of shallow covering, and realizes the pipe-pulling construction of the entry section.

This invention provides a welding method and application for circumferential welds on cylindrical bodies, belonging to the field of pipeline welding. The welding method includes the following steps: 1) accessory preparation; 2) pre-welding preparation: including setting the assembly gap, opening the welding bevel, and opening the blunt edge; wherein, when the wall thickness t of the cylindrical body is 10mm≤t≤40mm, the assembly gap g is 3mm~10mm; when the wall thickness t>40mm, the assembly gap g is 0mm; opening a single V-groove or a double V-groove; the bevel angle θ of the single V-groove is 35°~40°; the upper bevel angle θ of the double V-groove is 30°~35°, and the lower bevel angle α is 35°~40°; 3) performing single-pass welding of the circumferential weld on the cylindrical body using gas electric welding; during the welding process, carbon dioxide gas shielded welding is used; 4) post-weld treatment. This invention uses gas electric welding and single-pass welding to reduce welding defects in the circumferential weld of the cylindrical body, improving welding quality and efficiency.

The utility model discloses a kind of cold coil pipe welding equipment, comprising: rack, welding station is arranged on the rack;Coil bracket, the coil bracket is used to place coil pipe;Traction straightening device, the traction straightening device is used to be pulled to welding station after straightening coil pipe;Rotary jaw device, the rotary jaw device is used to chuck cold tank and drive cold tank rotation, the rotary jaw device includes jaw driving mechanism and several clamping pieces, the jaw driving mechanism is connected with the clamping piece transmission;Telescopic device, the rotary jaw device is connected with the telescopic device transmission;Pipe clamping device, the pipe clamping device is used to clamp coil pipe;Welding device, the welding device includes wire pulling mechanism and high-frequency welding mechanism, the wire pulling mechanism is used to pull welding wire to the rotary jaw device, the high-frequency welding mechanism is arranged at the welding station.The utility model can improve welding quality and welding efficiency.

The present application belongs to the technical field of pipeline welding, in particular to a butt welding device and method for butt welding flanges with necks, aiming to solve the problems of large gas consumption, slow air replacement, metal particle splashing and inaccurate butt joint of flange pipelines in traditional methods. The device comprises two semi-ring clamps hinged to each other, which form a sleeve ring after being combined. A clamping mechanism for installing the sleeve ring on the outer wall of the pipeline is arranged in the sleeve ring. An abutting mechanism is arranged in the sleeve ring. The device further comprises an isolation mechanism. The abutting mechanism comprises a fixed ring seat and two latch rods fixed to one side of the fixed ring seat. The isolation mechanism comprises a mandrel, a moving seat I, a moving seat II and a connecting rod. A silica glass fiber ring belt is arranged between the two rubber sealing rings. A dust collecting cover is arranged on the outer wall of the welding gun. A spiral guide groove is arranged on the inner wall of the dust collecting cover. A barb is arranged in the spiral guide groove. The device can reduce argon consumption, improve gas replacement efficiency and effectively capture welding splashes.