CN119973543A - Pipeline welding device and method - Google Patents
Pipeline welding device and method Download PDFInfo
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- CN119973543A CN119973543A CN202510231158.8A CN202510231158A CN119973543A CN 119973543 A CN119973543 A CN 119973543A CN 202510231158 A CN202510231158 A CN 202510231158A CN 119973543 A CN119973543 A CN 119973543A
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Abstract
The invention discloses a pipeline welding device and a method, comprising a frame, a pipeline supporting plate and a pivoting assembly, wherein a plurality of groups of guide rods are arranged in the frame, two groups of backing plates are movably sleeved on the plurality of groups of guide rods, the two groups of backing plates are connected through a traction assembly, the two groups of pipeline supporting plates are respectively fixedly connected on one group of backing plates, the pivoting assembly comprises a movable frame, a fixed frame and two groups of arc rings, the fixed frame is positioned in the frame, one side of the movable frame is provided with a supporting block, the supporting block is hinged with the frame, the movable frame is provided with a power part, the two groups of arc rings are connected through a transmission plate, a detachable welding part is arranged on the transmission plate, the power part is used for driving the two groups of arc rings to rotate, each group of arc rings is provided with a miniature electric cylinder, the movable rod of the miniature electric cylinder is provided with a cleaning and polishing part which can be contacted with a pipeline port, the positions of the pipeline on the backing plates are positioned and clamped automatically, the pipeline is not required to be manually pushed and adjusted for many times, the operation efficiency is high, and the welding precision is effectively improved.
Description
Technical Field
The invention relates to the technical field of pipeline welding, in particular to a pipeline welding device and a pipeline welding method.
Background
The pipeline is widely used in the industrial conveying fields of petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments and the like, mechanical structural parts and the like, and can convey liquid, gas and the like, and a plurality of pipelines can be connected through welding to form a long pipeline so as to meet the use requirement.
At present, in the pipeline welding process, the pipeline is often supported and aligned by means of on-site materials, so that long-time adjustment operation is needed, the instability is high during welding, meanwhile, the pipeline opening is also required to be cleaned and polished, attached mud, oil, paint, rust, burrs and the like are removed, the cleaning and polishing precision is difficult to control during cleaning by manpower, the welding quality is affected due to the uneven alignment positions of two pipelines, and therefore, the invention provides a pipeline welding device and a pipeline welding method capable of solving the problems.
Disclosure of Invention
The present invention is directed to a pipe welding apparatus and method, which solve the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A pipe welding apparatus comprising:
the frame is internally provided with a plurality of groups of guide rods, two groups of backing plates are movably sleeved on the plurality of groups of guide rods, and the two groups of backing plates are connected through a traction assembly;
The pipeline supporting plates are respectively fixedly connected to one group of the backing plates, and each group of the pipeline supporting plates is provided with an adjusting component for positioning and clamping the pipeline;
The pivot subassembly, including adjustable shelf, mount and two sets of arc circles, the mount is located in the frame, adjustable shelf one side is provided with the supporting shoe, the supporting shoe with the frame articulates mutually, be provided with power portion on the adjustable shelf, two sets of the arc circle passes through the drive plate and connects, install detachable welding portion on the drive plate, power portion is used for driving two sets of the arc circle rotates, and every group all install miniature electric jar on the arc circle, be provided with the clearance portion of polishing that can contact with the pipeline mouth on the movable rod of miniature electric jar.
As a preferable technical scheme, the traction assembly comprises traction arms rotatably connected with the inner wall of the frame, two ends of each traction arm are rotatably connected with movable arms respectively, and two groups of movable arms are hinged with one group of base plates respectively.
As a preferable technical scheme, the frame is provided with a transverse cylinder body, a movable rod of the transverse cylinder body is connected with one group of base plates, and the movable rod of the transverse cylinder body stretches and contracts to drive two groups of base plates to be close to or far away from each other.
As a preferable technical scheme, the adjusting component comprises a first longitudinal cylinder body and a second longitudinal cylinder body which are arranged on the lower side of the base plate, and a first straight groove and a second straight groove which are arranged on the pipeline supporting plate, wherein the first straight groove and the second straight groove are symmetrically distributed and are respectively inserted with a first supporting rod and a second supporting rod, the movable rod of the first longitudinal cylinder body is connected with the first supporting rod through a push plate, and the movable rod of the second longitudinal cylinder body is connected with the second supporting rod through a push plate.
The movable rods of the first longitudinal cylinder body and the second longitudinal cylinder body are contracted, and the movable rods of the first longitudinal cylinder body and the second longitudinal cylinder body are driven by the push plate to approach to push the pipeline to move towards the center and clamp the pipeline.
As an optimal technical scheme, the other side of the movable frame is provided with a supporting block, the supporting block is provided with a bolt, and the bolt can be in threaded connection with the frame to fix the movable frame.
As a preferable technical scheme, two groups of first tracks are arranged on the movable frame at intervals, two groups of second tracks are arranged on the fixed frame at intervals, the movable frame can pivot to enable the first tracks and the second tracks to be in butt joint one by one to form a circumferential channel, and the two groups of arc rings can rotate along the formed circumferential channels respectively.
As a preferable technical scheme, the power part comprises two groups of motor bodies arranged on the movable frame, the output ends of the two groups of motor bodies are respectively connected with gears, one group of arc rings are provided with arc gear rings, and at least one group of gears are meshed with the arc gear rings when the arc rings rotate.
As a preferred technical solution, the cleaning and polishing part comprises an end surface contact section and a slope surface contact section.
The invention also provides a pipeline welding method which is used for any one of the technical schemes, and specifically comprises the following steps:
S1, respectively placing two groups of pipelines on a group of pipeline supporting plates, and enabling the distances between the pipeline supporting plates extending out of two groups of pipeline ports to be consistent;
S2, controlling the adjusting assembly to position and clamp the pipelines, so that two groups of pipelines respectively keep a central position on the pipeline supporting plate and are fixed;
s3, rotating the movable frame and screwing the bolts with the frame, so that the movable frame is kept fixed, two groups of arc rings respectively move one sides of the mouth ends of two groups of pipelines to be welded, the arc rings are collinear with the central line of the pipelines, and the cleaning and polishing part driven by the miniature electric cylinder is controlled to extend towards the center of the arc plate;
S4, pushing the backing plate to drive the pipelines to be welded on the two groups of pipeline supporting plates to be close to each other and contact with the cleaning and polishing parts, enabling the two groups of arc rings of the power part to rotate, and driving the cleaning and polishing parts to polish and clean pipeline ports when the arc rings rotate;
s5, installing the welding part on the transmission plate, controlling the driving cleaning and polishing part of the miniature electric cylinder to be far away from the center of the arc plate, pushing the base plate to enable two groups of polished pipelines to be opposite, and finally driving the arc ring to rotate through the power part to weld the two groups of pipelines.
Compared with the prior art, the invention has the beneficial effects that:
The positioning and clamping of the pipeline on the pipeline supporting plate are automatically realized, manual repeated pushing and adjusting are not needed, the operation efficiency is high, and the welding precision is effectively improved;
the arc ring rotates and drives the cleaning and polishing part to polish and clean the pipeline opening of the pipeline, so that attached mud, oil, paint, rust, burrs and the like are removed, the cleaning and polishing precision of the pipeline opening is uniform and consistent, and the welding quality is effectively improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a pulling assembly according to the present invention;
FIG. 3 is a schematic view of the structure of the adjusting assembly of the present invention;
FIG. 4 is a schematic view of a pivot assembly according to the present invention;
FIG. 5 shows the present invention a structural schematic diagram of the fixing frame;
FIG. 6 is a schematic view of a movable frame structure according to the present invention;
FIG. 7 is a schematic diagram of a connection relationship between two sets of arc rings according to the present invention;
10, frame, 11, guide rod, 12, backing plate, 20, pulling component, 21, pulling arm, 22, movable arm, 23, transverse cylinder, 30, pipeline supporting plate, 40, adjusting component, 41, first longitudinal cylinder, 42, second longitudinal cylinder, 43, first straight groove, 44, second straight groove, 45, first supporting rod, 46, second supporting rod, 47, push plate, 50, pivoting component, 51, fixing frame, 511, second track, 52, movable frame, 521, first track, 522, supporting block, 523, supporting block, 524, bolt, 53, arc ring, 54, power part, 541, motor body, 542, gear, 543, arc gear ring, 55, transmission plate, 56, welding part, 57, miniature electric cylinder, 58, cleaning part, 581, end surface contact section, 582, slope contact section.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Please refer to fig. 1-7
In a first embodiment, a pipe welding apparatus is provided:
a supporting frame is arranged below the frame 10, and is connected with the frame 10 through a lifting cylinder body, so that the frame 10 can be driven to vertically lift.
The frame 10 is internally provided with a plurality of groups of guide rods 11, two groups of base plates 12 are movably sleeved on the plurality of groups of guide rods 11, the two groups of base plates 12 are connected through the traction assembly 20, each group of base plates 12 is fixedly connected with a pipeline supporting plate 30, and the pipeline supporting plates 30 are used for lifting pipelines, so that the pipelines can move on the guide rods 11 through the two groups of base plates 12 on the pipeline supporting plates 30, and the position of the pipelines can be adjusted.
Each group of pipeline support plates 30 is provided with an adjusting component 40 for positioning and clamping the pipeline, and the pipelines cannot be positioned and fixed after being placed on the support plates, so that the pipelines are positioned and clamped through the adjusting component 40, the two groups of pipelines are respectively kept at the central positions of the pipeline support plates 30, and the two groups of pipelines are convenient to be aligned.
The adjusting assembly 40 comprises a first longitudinal cylinder 41 and a second longitudinal cylinder 42 which are arranged on the lower side of the mounting base plate 12, and a first straight groove 43 and a second straight groove 44 which are arranged on the pipeline supporting plate 30, wherein the number of the first straight grooves 43 and the number of the second straight grooves 44 are preferably multiple groups and the same, the multiple groups of the first straight grooves 43 and the multiple groups of the second straight grooves 44 are symmetrically distributed on the central vertical plane of the pipeline supporting plate 30, a first supporting rod 45 is inserted into each group of the first straight grooves 43, a second supporting rod 46 is inserted into each group of the second straight grooves 44, the movable rod of the first longitudinal cylinder 41 is connected with the first supporting rod 45 through a pushing plate 47, and the movable rod of the second longitudinal cylinder 42 is connected with the second supporting rod 46 through the pushing plate 47.
The first supporting rod 45 can longitudinally move along the first straight groove 43, and the second supporting rod 46 can longitudinally move along the second straight groove 44;
The movable rods of the first longitudinal cylinder body 41 and the second longitudinal cylinder body 42 extend out, and the push plate 47 drives the first supporting rod 45 and the second supporting rod 46 to be away from each other, namely, the distance between the first supporting rod 45 and the second supporting rod 46 is enlarged, so that the pipeline can be taken and placed on the pipeline supporting plate 30;
The movable rods of the first longitudinal cylinder body 41 and the second longitudinal cylinder body 42 are contracted, the push plate 47 drives the first support rod 45 and the second support rod 46 to mutually approach to push the pipeline to move towards the center and clamp the pipeline, and after the pipeline is placed on the pipeline supporting plate 30, the first support rod 45 and the second support rod 46 mutually approach to each other to push the pipeline to move towards the center and finally clamp the pipeline;
The pipeline positioning and clamping device has the advantages that the pipeline positioning and clamping device automatically positions the pipeline on the pipeline supporting plate 30, manual repeated pushing and adjusting are not needed, the operation efficiency is high, and the welding precision is effectively improved.
The pivot subassembly 50 includes movable frame 52, mount 51 and two sets of arc circles 53, and mount 51 is located frame 10, and movable frame 52 one side is provided with supporting shoe 522, and supporting shoe 522 is articulated mutually with frame 10, is provided with power portion 54 on the movable frame 52, and two sets of arc circles 53 pass through drive plate 55 to be connected, and power portion 54 is used for driving two sets of arc circles 53 and rotates, and all installs miniature electric jar 57 on every set of arc circle 53, is provided with the clearance portion of polishing 58 that can contact with the pipeline mouth on the movable rod of miniature electric jar 57.
Two groups of first rails 521 are arranged on the movable frame 52 at intervals, two groups of second rails 511 are arranged on the fixed frame 51 at intervals, the movable frame 52 can pivot to enable the first rails 521 and the second rails 511 to be in butt joint one by one to form a circumferential channel, and the two groups of arc rings 53 can rotate along the formed circumferential channel respectively;
The other side of the movable frame 52 is provided with a supporting block 523, the supporting block 523 is provided with a bolt 524, after two groups of pipelines to be welded are positioned and clamped, the movable frame 52 is rotated and the bolt 524 is in threaded connection with the frame 10, so that the movable frame 52 is kept fixed, the first rail 521 and the second rail 511 are in one-to-one butt joint to form a circumferential channel, two groups of arc rings 53 are driven to move to one side of the mouth ends of the two groups of pipelines to be welded respectively, the arc rings 53 are collinear with the central line of the pipelines, the cleaning and polishing part 58 is driven to extend towards the center of the arc plates by controlling the miniature electric cylinders 57, and the miniature electric cylinders 57 provide electric power support through own battery packs;
Then, a group of backing plates 12 are pushed to move on the guide rod 11, so that the two groups of backing plates 12 synchronously move through the traction component 20, the pipelines to be welded on the two groups of pipeline supporting plates 30 are driven to be close to each other and contact with the cleaning polishing part 58, the cleaning polishing part 58 comprises an end surface contact section 581 and a slope surface contact section 582, the end surface contact section 581 and the slope surface contact section 582 are made of silicon carbide materials, and as the two groups of arc rings 53 are connected through the transmission plate 55, the power part 54 is used for driving the one group of arc rings 53 to rotate so as to synchronously drive the other group of arc rings 53 to rotate, and the arc rings 53 drive the cleaning polishing part 58 to polish and clean the pipeline openings of the pipelines when rotating, so that the cleaning polishing precision of the pipeline openings is uniform and consistent, and the welding quality is effectively improved.
The transmission plate 55 is provided with a detachable welding part 56, after the pipeline opening is cleaned and polished, the welding part 56 is arranged on the transmission plate 55, the welding part 56 comprises a bracket, a laser welding head and a plurality of connecting screws, the cleaning and polishing part 58 driven by the micro electric cylinder 57 is controlled to be far away from the center of the arc plate, the backing plate 12 is pushed to enable two groups of polished pipelines to be relatively opened, and finally the power part 54 drives the arc ring 53 to rotate so as to weld the two groups of pipelines.
In a second embodiment, a pipe welding apparatus is provided:
The traction component 20 comprises a traction arm 21 rotationally connected with the inner wall of the frame 10, two ends of the traction arm 21 are respectively rotationally connected with movable arms 22, two groups of movable arms 22 are respectively hinged with one group of base plates 12, a transverse cylinder 23 is mounted on the frame 10, movable rods of the transverse cylinder 23 are connected with one group of base plates 12, and the movable rods of the transverse cylinder 23 stretch to drive the two groups of base plates 12 to be close to or far away from each other;
The transverse cylinder 23 provides power for the movement of the base plate 12 on the guide rod 11, manual pushing is not needed, and the movable rod of the transverse cylinder 23 is controlled to stretch and retract and then can be maintained, so that the two groups of pipelines cannot move transversely during cleaning, polishing and welding.
The power part 54 comprises two groups of motor bodies 541 arranged on the movable frame 52, the output ends of the two groups of motor bodies 541 are respectively connected with gears 542, an arc gear ring 543 is arranged on one group of arc rings 53, and at least one group of gears 542 are meshed with the arc gear ring 543 when the arc rings 53 rotate, so that smooth driving of the arc rings 53 is ensured.
After two groups of pipelines are welded to form longer pipelines, the movable frame 52 is rotated to reset and the clamping action of the adjusting component 40 on the pipelines is canceled, so that the welded longer pipelines can be separated vertically relative to the welding device, namely, the welded pipelines do not need to be pulled and moved, the operation convenience is good, and the space occupied by pipeline welding is effectively reduced.
In a third embodiment, a method for welding a pipe is provided:
s1, respectively placing two groups of pipelines on a group of pipeline supporting plates 30, and enabling the distances between the pipeline supporting plates 30 extending out of the two groups of pipeline ports to be consistent;
s2, controlling the adjusting assembly 40 to position and clamp the pipelines so that two groups of pipelines respectively keep a central position on the pipeline supporting plate 30 and are fixed;
S3, rotating the movable frame 52 and screwing the bolts 524 with the frame 10, so that the movable frame 52 is kept fixed, two groups of arc rings 53 are respectively moved to one side of the mouth end of the two groups of pipelines to be welded, the arc rings 53 are collinear with the central line of the pipelines, and the cleaning and polishing part 58 driven by the miniature electric cylinder 57 is controlled to extend towards the center of the arc plates;
S4, pushing the backing plate 12 to drive the pipelines to be welded on the two groups of pipeline supporting plates 30 to be close to each other and contact the cleaning and polishing parts 58, enabling the two groups of arc rings 53 of the power part 54 to rotate, and driving the cleaning and polishing parts 58 to polish and clean pipeline openings when the arc rings 53 rotate;
S5, installing a welding part 56 on a transmission plate 55, controlling a miniature electric cylinder 57 to drive a cleaning and polishing part 58 to be far away from the center of the arc plate, pushing a backing plate 12 to enable two groups of polished pipelines to be opposite, and finally driving an arc ring 53 to rotate through a power part 54 to weld the two groups of pipelines.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A pipe welding apparatus, comprising:
The frame (10) is internally provided with a plurality of groups of guide rods (11), two groups of base plates (12) are movably sleeved on the guide rods (11), and the two groups of base plates (12) are connected through a traction assembly (20);
two groups of pipeline supporting plates (30) are respectively fixedly connected to one group of the backing plates (12), and each group of pipeline supporting plates (30) is provided with an adjusting component (40) for positioning and clamping a pipeline;
The pivot subassembly (50), including movable frame (52), mount (51) and two sets of arc circle (53), mount (51) are located in frame (10), movable frame (52) one side is provided with supporting shoe (522), supporting shoe (522) with frame (10) are articulated mutually, be provided with power portion (54) on movable frame (52), two sets of arc circle (53) are connected through drive plate (55), install detachable welding portion (56) on drive plate (55), power portion (54) are used for driving two sets of arc circle (53) are rotated, and every group all install miniature electric jar (57) on arc circle (53), be provided with clearance portion of polishing (58) that can contact with the pipeline mouth on the movable rod of miniature electric jar (57).
2. A pipe welding apparatus according to claim 1, wherein the pulling assembly (20) comprises a pulling arm (21) rotatably connected to the inner wall of the frame (10), two ends of the pulling arm (21) are rotatably connected to movable arms (22), and two groups of movable arms (22) are hinged to one group of backing plates (12).
3. A pipe welding device according to claim 2, characterized in that the frame (10) is provided with a transverse cylinder (23), a movable rod of the transverse cylinder (23) is connected with one group of the backing plates (12), and the movable rod of the transverse cylinder (23) stretches to drive two groups of the backing plates (12) to be close to or far from each other.
4. The pipe welding device according to claim 1, wherein the adjusting assembly (40) comprises a first longitudinal cylinder body (41) and a second longitudinal cylinder body (42) which are arranged on the lower side of the base plate (12), and a first straight groove (43) and a second straight groove (44) which are formed in the pipe supporting plate (30), the first straight groove (43) and the second straight groove (44) are symmetrically distributed and are respectively inserted with a first supporting rod (45) and a second supporting rod (46), the movable rod of the first longitudinal cylinder body (41) is connected with the first supporting rod (45) through a pushing plate (47), and the movable rod of the second longitudinal cylinder body (42) is connected with the second supporting rod (46) through the pushing plate (47).
5. The pipe welding device according to claim 4, wherein the movable rods of the first longitudinal cylinder body (41) and the second longitudinal cylinder body (42) extend out, the first supporting rod (45) and the second supporting rod (46) are driven by the pushing plate (47) to be away from each other, the movable rods of the first longitudinal cylinder body (41) and the second longitudinal cylinder body (42) are contracted, and the first supporting rod (45) and the second supporting rod (46) are driven by the pushing plate (47) to be close to each other to push the pipe to move towards the center and clamp the pipe.
6. The pipe welding device according to claim 1, wherein a supporting block (523) is provided on the other side of the movable frame (52), a bolt (524) is provided on the supporting block (523), and the bolt (524) can be screwed with the frame (10) to fix the movable frame (52).
7. The pipe welding device according to claim 1, wherein two groups of first rails (521) are arranged on the movable frame (52) at intervals, two groups of second rails (511) are arranged on the fixed frame (51) at intervals, the movable frame (52) can pivot to enable the first rails (521) and the second rails (511) to be in butt joint one by one to form a circumferential channel, and the two groups of arc rings (53) can rotate along the formed circumferential channels respectively.
8. A pipe welding apparatus according to claim 7, wherein the power unit (54) comprises two sets of motor bodies (541) mounted on the movable frame (52), the output ends of the two sets of motor bodies (541) are respectively connected with gears (542), one set of arc rings (53) is provided with an arc gear ring (543), and at least one set of gears (542) is meshed with the arc gear ring (543) when the arc rings (53) rotate.
9. A pipe welding apparatus according to claim 1, wherein the cleaning and sanding section (58) comprises an end surface contact section (581) and a ramp surface contact section (582).
10. A method of pipe welding for a welding apparatus according to any one of the preceding claims 1-9, characterized in that it comprises in particular the following steps:
s1, respectively placing two groups of pipelines on a group of pipeline supporting plates (30), and enabling the distances between the pipeline supporting plates (30) extending out of two groups of pipeline ports to be consistent;
S2, controlling an adjusting assembly (40) to position and clamp the pipelines, so that two groups of pipelines respectively keep a central position on a pipeline supporting plate (30) and are fixed;
S3, rotating the movable frame (52) and screwing the bolts (524) with the frame (10), so that the movable frame (52) is kept fixed, two groups of arc rings (53) are respectively moved to one side of the mouth end of the two groups of pipelines to be welded, the arc rings (53) are collinear with the central line of the pipelines, and the miniature electric cylinder (57) is controlled to drive the cleaning and polishing part (58) to extend towards the center of the arc plates;
S4, pushing the backing plate (12) to drive the pipelines to be welded on the two groups of pipeline supporting plates (30) to be close to each other and contact the cleaning and polishing part (58), enabling the power part (54) to rotate the two groups of arc rings (53), and driving the cleaning and polishing part (58) to polish and clean pipeline orifices when the arc rings (53) rotate;
S5, installing a welding part (56) on a transmission plate (55), controlling a miniature electric cylinder (57) to drive a cleaning and polishing part (58) to be far away from the center of the arc plate, pushing a backing plate (12) to enable two groups of polished pipelines to be opposite, and finally driving an arc ring (53) to rotate through a power part (54) to weld the two groups of pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510231158.8A CN119973543A (en) | 2025-02-28 | 2025-02-28 | Pipeline welding device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510231158.8A CN119973543A (en) | 2025-02-28 | 2025-02-28 | Pipeline welding device and method |
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| Publication Number | Publication Date |
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| CN119973543A true CN119973543A (en) | 2025-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202510231158.8A Pending CN119973543A (en) | 2025-02-28 | 2025-02-28 | Pipeline welding device and method |
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| CN (1) | CN119973543A (en) |
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| CN221159630U (en) * | 2023-11-29 | 2024-06-18 | 段宝美 | Pressure pipeline grinding device |
| CN118616883A (en) * | 2024-07-22 | 2024-09-10 | 江苏正泰不锈钢产业有限公司 | A stainless steel pipe welding equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100739104B1 (en) * | 2006-12-20 | 2007-07-12 | 웰텍 주식회사 | TIG automatic welding device and method of field construction |
| CN218533405U (en) * | 2022-09-30 | 2023-02-28 | 建始县通龙天然气有限责任公司 | Natural gas line maintenance of equipment |
| CN115740946A (en) * | 2022-12-01 | 2023-03-07 | 山东晟博安装工程有限公司 | Petrochemical engineering pipeline installation and welding auxiliary structure and using method thereof |
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| CN116441808A (en) * | 2023-06-14 | 2023-07-18 | 高密鼎泰锅炉配件有限公司 | Welding equipment for enamel pipe and welding method thereof |
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