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2372 results about "Pipe welding" patented technology

Rhombic internal support clamp for round pipe welding

The invention discloses a rhombic internal support clamp for round pipe welding. The rhombic internal support clamp comprises at least one rhombic internal support unit, push cylinders corresponding to the rhombic internal support units one to one, two end covers, a main shaft and a plurality of pressing back-blowing modules, wherein the main shaft is arranged at the center of a round pipe, and both ends of the main shaft are respectively fixed in the centers of the two end covers; each push cylinder is fixedly arranged on the main shaft; each rhombic internal support unit comprises a positioning ring, a movable ring and at least one rhombic supporting frame; the positioning rings fixedly sleeve the main shaft; the movable rings sleeve the main shaft and can move back and forth along the main shaft along with the pushing of the corresponding push cylinders; one pair of diagonals of each rhombic supporting frame is respectively hinged to the corresponding positioning ring and the corresponding movable ring, and the other pair of diagonals of each rhombic supporting frame is respectively hinged to two supporting platforms; at least one pressing back-blowing module is fixed on each supporting platform. According to the rhombic internal support clamp, the internal protection problem for pipe welding is solved, the quality of welds is improved, and thermal deformation is relieved.
Owner:SHANGHAI PURUIMA INTELLIGENT TECH CO LTD

Automatic welding treatment integrated machine for flange plates of pipeline installing and connecting joints

The invention relates to an automatic welding and processing integrated machine for pipe installation and connection joint flanges, which includes a supporting base plate, a fixing device, a grinding device, a welding device, a rotating device and a post-welding processing device. The fixing device is installed in the middle of the supporting base plate Above, the grinding device is located above the fixing device, the grinding device is installed on the supporting base plate, the rotating device is located outside the fixing device, the rotating device is connected with the supporting base plate, the welding device and the post-welding processing device are installed on the rotating device, the welding device Located on the front side of the post-weld treatment unit. The present invention can solve the existing problems that the flange cannot be fixed multiple times when the flange and the steel pipe are welded, the flange is not firmly fixed, the flange needs to be manually polished before welding, and the flange is not polished before welding. Good, the welding action cannot be performed automatically, the post-weld treatment of the flange and the steel pipe is required manually, and the manual post-weld treatment is not thorough, etc.
Owner:范满香

Heat exchanger with micro-channel, parallel-flow and all-aluminum flat pipe welding structure and application

The invention discloses a heat exchanger with a micro-channel, parallel-flow and all-aluminum flat pipe welding structure. The heat exchange part of the heat exchanger is formed by arranging flat pipes consisting of aluminum extruded thin-walled sections in parallel. Compared with the prior art, the heat exchanger with the micro-channel, parallel-flow and all-aluminum flat pipe welding structure has the advantages that: 1, the heat exchange efficiency of a refrigerant and the inner walls of the flat pipes is improved by 40 percent, and the flow resistance of the refrigerant in collecting pipes of the heat exchanger is reduced by 40 percent; 2, the heat exchange efficiency of fins on an air side is improved by 40 percent, and the wind resistance of the heat exchanger on the air side is reduced by 40 percent; 3, the heat exchange performance of the whole heat exchanger is improved by 40 percent; 4, compared with the prior art, the heat exchanger consumes 40 percent less refrigerant; and5, compared with the conventional copper-aluminum structure, the all-aluminum structure endows the heat exchanger with longer service life because of no copper-aluminum potential differences. The heat exchanger adopting the flat pipes has the characteristics of capability of bearing the conventional limitation of high-pressure resistance value of the refrigerant, compact product structure, light unit weight, short process flow, high manufacturing reliability and relatively lower cost. The invention also discloses the application of the heat exchanger.
Owner:王磊

Metal pipeline welding device for water conservancy construction

The invention discloses a metal pipeline welding device for water conservancy construction, and relates to the technical field of water conservancy construction machinery. The metal pipeline welding device comprises a supporting frame, wherein a servo motor is fixedly mounted on the top in the supporting frame; two supporting limiting mechanisms for supporting a pipeline are arranged in the supporting frame; a welding assembly which is in drive connection through a translation mechanism is arranged above the pipeline; and the welding assembly comprises a connecting disc, and a welding gun which is connected on the connecting disc through a steering mechanism. According to the metal pipeline welding device disclosed by the invention, the supporting limiting mechanisms are arranged to clampand fix from the inner part of the pipeline, so that the pipeline does not deviate while driven by a rotary roller to rotate, and the pipeline rotates for enabling welding efficiency of the welding gun to be higher; the arranged welding gun can regulate a welding inclination angle through the steering mechanism, and can meet welding operation of different process requirements; and a grinding roller can be arranged to grind a welding seam after the pipeline is welded, so that flatness of the welding seam is guaranteed after the pipeline is welded.
Owner:赵玉研

Metal pipe welding method and metal pipe welding assembly

The invention discloses a metal pipe welding method and a metal pipe welding assembly. The method comprises the steps of: (1) inserting one end of a liner tube into the pipe cavity at the welded end of a pipe to be welded in such a manner that the other end of the liner tube protrudes out of the welded end of the pipe to be welded; (2) inserting the portion of the liner tube protruding out of the welded end of the pipe to be welded into the pipe cavity of the welded end of another pipe to be welded, and butt-connecting the welded ends of the two pipes to be welded to form a seam to be welded; and (3) welding the pipes at the seam to be welded to form a fusion region so as to connect the welded ends of the two pipes to be welded. The metal pipe welding assembly comprises two pipes to be welded and a liner tube, wherein both ends of the liner tube are respectively inserted in the pipe cavity of one pipe to be welded; and a fusion region is formed by welding at the joint of the welded ends of the two pipes to be welded. During conducting gas shielded welding, the metal pipe welding method can ensure the final welding seam strength equal to the strength of the two pipes at both ends without filling the inner side of the welding seam with a protective gas, and can effectively prevent occurrence of hanging accretions.
Owner:浙江天力久田管业有限公司

Welding device for plastic pipe

The invention discloses a welding device for a plastic pipe. The technical scheme is characterized in that the welding device comprises a rack, a pipe clamp jig used for clamping a main pipe, a first clamp used for clamping a pipe welding head and a second clamp used for clamping branch pipes, which are arranged on the rack, a hot-melting heating device, a linear motion system for realizing the relative axial motion of the pipe clamp jig and the first clamp, and a three-axis motion system used for enabling the second clamp to move towards the sidewall of the main pipe and realizing the entrance of the hot-melting heating device to the axial directions of the branch pipes or the separation of the hot-melting heating device from the axial directions of the branch pipes, wherein the hot-melting heating device has two working state, the first one is that the hot-melting heating device is used for heating the sidewall of the main pipe and the end heads of the branch pipes respectively, and the second one is the hot-melting heating device is used for heating the sidewall of the main pipe and the sidewall of the pipe welding head respectively. Hot-melting heating among the same pipelines can be realized on one device, hot-melting heating for the pipe welding head and the main pipe can be realized, and hot-melting heating for the plurality of branch pipes arranged on the main pipe can be realized; and the hot-melting welding device is automatic in welding, high in efficiency, high in welding quality, and easy for working personnel to operate.
Owner:盛忆镐科技(江苏)有限公司

Four-wheel synchronous rail change welding material transfer trolley

The invention discloses a four-wheel synchronous rail change welding material transfer trolley. The trolley mainly comprises a trolley body, a workpiece lifting mechanism, a trolley body lifting mechanism, reversing mechanisms, advancing mechanisms, rails and a sliding electrifier; the workpiece lifting mechanism is mounted at the upper part of the trolley body; the trolley body lifting mechanism is mounted in a frame of a square steel pipe welding structure of the trolley body; the advancing mechanisms are mounted at four corners of the trolley body, and are connected with the reversing mechanisms; rails comprise longitudinal and transverse rails vertically intersected; the workpiece lifting mechanism can meet the requirements of lifting workpieces in different stations; when the transfer trolley is steered, the trolley body lifting mechanism lifts up the transfer trolley body, and the reversing mechanisms drive the advancing mechanisms to turn by 90 degrees; then, the trolley body lifting mechanism downwards move; and after the transfer trolley is descended, wheels are contacted with the rails to realize conversion of longitudinal and transverse directions of the transfer trolley. Compared with the prior art, the trolley is simple in overall structure, firm and fast in rail change mode, totally lifted, high in loading tonnage and stable in operation, and can greatly improve the production efficiency.
Owner:CHANGCHUN UNIV OF SCI & TECH
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