CN212122076U - Petroleum pipeline laser electric arc hybrid welding device - Google Patents
Petroleum pipeline laser electric arc hybrid welding device Download PDFInfo
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- CN212122076U CN212122076U CN202020617813.6U CN202020617813U CN212122076U CN 212122076 U CN212122076 U CN 212122076U CN 202020617813 U CN202020617813 U CN 202020617813U CN 212122076 U CN212122076 U CN 212122076U
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Abstract
The utility model provides a petroleum pipeline laser electric arc hybrid welding device. The method comprises the following steps: a welding workbench; the two rotating devices are respectively provided with two petroleum pipelines for welding; the two rotating devices rotate synchronously, and the two petroleum pipelines are coaxially arranged and provided with butt joints; an arc welding device having a welding torch; and a laser having a laser head; the laser head and a gun nozzle of the welding gun are arranged on the outer side of the butt joint, and the gun nozzle is positioned on the downstream side of the laser head along the rotation direction of the petroleum pipeline; the laser beam emitted by the laser head extends along the radial direction of the butt joint, the included angle between the laser beam and the axis of a gun nozzle of the welding gun is 30-50 degrees, and the distance between a laser beam heat source formed at the butt joint and an electric arc heat source is 2-6 mm. The welding process has the advantages of short working period, improved welding efficiency, stable welding process, high repeatability, less splashing, stable and attractive welding line and improved welding speed by nearly 1 time.
Description
Technical Field
The utility model relates to a petroleum pipeline welding field especially relates to a petroleum pipeline laser electric arc hybrid welding device.
Background
The petroleum pipeline is usually made of low-carbon steel pipes which are not high in strength and hardness, good in plasticity and toughness and excellent in welding performance, so that the steel pipes made of the low-carbon steel pipes are applied to storage and transportation links and structural parts with low pressure-bearing conditions. With the progress of social development being accelerated, the use amount and application of the low-carbon steel pipe are gradually increased, which also means that requirements are made on the welding quality and efficiency of the low-carbon steel pipe. Compared with other arc welding, submerged arc welding has the characteristics of large fusion depth, good weld joint protection effect and less filling metal, so that the submerged arc welding is widely applied to the welding link of low-carbon steel pipes. However, the need to deposit and recover flux during the welding process greatly limits the efficiency of its operation. Meanwhile, due to the adoption of larger current, a heat affected zone and deformation are larger, and the difficulty of controlling the quality of the welding seam is increased. At present, the method for improving the butt welding of the low-carbon steel pipes mainly focuses on how to increase the voltage of an electric arc heat source or directly increase an electric arc welding gun or a wire feeding nozzle. Although the problems of insufficient penetration or too slow welding speed can be solved to a certain extent, the methods can increase the heat affected zone near the weld joint and improve the difficulty of controlling the quality of the weld joint.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defect of at least one of current low carbon steel pipe, providing a petroleum pipeline laser electric arc hybrid welding device and method, can improve welding efficiency and welding seam clearance adaptability as far as possible under the stable condition of assurance weld forming.
On the one hand, the utility model provides a petroleum pipeline laser electric arc hybrid welding device, include:
a welding workbench;
the two rotating devices are arranged on the welding workbench, and two petroleum pipelines for being welded are respectively arranged on the two rotating devices; the two rotating devices rotate synchronously, and the two petroleum pipelines are coaxially arranged and provided with butt joints;
an arc welding device attached to the welding table, the arc welding device having a welding torch; and
a laser mounted to the welding table, the laser having a laser head; and is
The laser head with the rifle mouth of welder set up in the outside of butt joint department, along petroleum pipeline's direction of rotation, the rifle mouth is in the downstream side of laser head.
Optionally, the laser beam emitted by the laser head extends along the radial direction of the butt joint, the included angle between the laser beam and the gun nozzle axis of the welding gun is 30 ° to 50 °, and the distance between the laser beam heat source and the arc heat source formed at the butt joint is 2mm to 6 mm.
Optionally, the petroleum pipeline laser arc hybrid welding device further comprises two translation devices, and the two translation devices are mounted on the welding workbench;
each rotating device is mounted on one translation device so as to move along the axial direction of the petroleum pipeline under the driving of the translation device.
Optionally, the laser-arc hybrid welding device for the petroleum pipeline further comprises a polishing device mounted on the welding workbench, so that when the translation device brings the corresponding petroleum pipeline to a polishing station, the polishing device performs groove polishing or butt ring polishing.
Optionally, the laser is a fiber laser, the arc welding device is a fornice welder, and the rotating device is a positioner.
Optionally, the petroleum pipeline is a low-carbon steel pipe, the wall thickness of the low-carbon steel pipe is 6mm to 20mm, and the groove at the butt joint is a Y-shaped groove.
Optionally, the diameter of the adopted welding wire is 1.2mm, the protrusion amount of the welding wire is controlled to be 10 mm-22 mm, and the welding speed is controlled to be 1.0m/min-1.4 m/min;
the power of the laser is 3000W to 4500W, the welding gun current of the arc welding device is 230A to 270A, the wire feeding speed of the arc welding device is 5m/min to 9m/min, the arc length correction of the arc welding device is controlled to be 10% to 30%, and the gas flow is controlled to be 15L/min to 28L/min.
Optionally, the number of the grinding devices is two, and the grinding devices are arranged on two sides of the laser head and the welding gun.
On the other hand, the utility model also provides a petroleum pipeline laser electric arc hybrid welding method, include:
grinding a groove on one petroleum pipeline and a butt joint ring on the other petroleum pipeline;
butting two petroleum pipelines and performing spot welding at multiple butted positions;
positioning a welding gun of an arc welding device and a laser head of a laser outside the butt joint, wherein the gun nozzle is positioned at the downstream side of the laser head along the rotation direction of the petroleum pipeline;
and synchronously rotating the two petroleum pipelines, and starting the electric arc welding device and the laser to weld.
Optionally, the laser beam emitted by the laser head extends along the radial direction of the butt joint, the included angle between the laser beam and the gun nozzle axis of the welding gun is 30 ° to 50 °, and the distance between the laser beam heat source and the arc heat source formed at the butt joint is 2mm to 6 mm.
Optionally, the petroleum pipeline is a low-carbon steel pipe, the wall thickness is 6mm to 20mm, and the groove at the butt joint is a Y-shaped groove;
the diameter of the adopted welding wire is 1.2mm, the extension amount of the welding wire is controlled to be 10 mm-22 mm, and the welding speed is controlled to be 1.0m/min-1.4 m/min;
the power of the laser is 3000W to 4500W, the welding gun current of the arc welding device is 230A to 270A, the wire feeding speed of the arc welding device is 5m/min to 9m/min, the arc length correction of the arc welding device is controlled to be 10% to 30%, and the gas flow is controlled to be 15L/min to 28L/min.
The embodiment of the utility model provides a following technological effect has:
the laser-arc hybrid welding relates to a laser beam and an arc welding gun and a specific arrangement position, and two heat sources are mutually compounded to act on a workpiece, so that the welding is carried out. The laser head and the welding gun do not need to be frequently replaced and position adjusted, so that the working procedures before welding are reduced, the working period is shortened, and the welding efficiency is improved. Meanwhile, the scheme also reduces the assembly requirement of the butt joint gap and reduces the possible influence of the environment on the welding process. Moreover, the welding process is stable, the repeatability is high, the splashing in the welding process is small, and the obtained welding line is stable and attractive. The welding speed of the traditional submerged arc welding is generally 0.5 m/min-0.8 m/min, while the welding speed of the scheme can reach 1.0m/min-1.4m/min, which is improved by nearly 1 time compared with the previous and the next welding. Meanwhile, the scheme can achieve the weld penetration of about 7mm even under the condition of lower laser power, has good gap bridging capacity and can ensure the gap processing error of 0.5 mm.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of a petroleum pipeline laser arc hybrid welding device provided according to an embodiment of the present invention;
FIG. 2 is a schematic partial block diagram of the laser arc hybrid welding apparatus for the petroleum pipeline shown in FIG. 1;
fig. 3 is a schematic flow chart of a petroleum pipeline laser arc hybrid welding method provided according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic structural diagram of a petroleum pipeline laser arc hybrid welding device provided according to an embodiment of the present invention. As shown in fig. 1 and referring to fig. 2, an embodiment of the present invention provides a petroleum pipeline laser arc hybrid welding device, which includes a welding bench 20, two rotating devices 30, an arc welding device 40 and a laser 50. Two rotating devices 30 are arranged on the welding workbench 20, and two petroleum pipelines 10 for being welded are respectively arranged on the two rotating devices 30. The two rotating devices 30 rotate synchronously, and the two petroleum pipelines 10 are coaxially arranged and provided with butt joints. The arc welding device 40 is attached to the welding table 20, and the arc welding device 40 includes a welding torch 41. The laser 50 is mounted on the welding table 20, and the laser 50 has a laser head 51.
The laser head 51 and the nozzle of the welding gun 41 are arranged outside the butt joint, and the nozzle is positioned at the downstream side of the laser head 51 along the rotation direction of the petroleum pipeline 10. The laser beam emitted by the laser head 51 extends in the radial direction of the butt joint, the angle alpha between the laser beam and the gun nozzle axis of the welding gun 41 is 30-50 degrees, and the distance between the laser beam heat source 11 and the arc heat source 12 formed at the butt joint is 2-6 mm. The relative position relationship between the laser beam heat source 11 and the arc heat source 12 formed at the butt joint is that the arc heat source 12 is positioned at the downstream side of the laser beam heat source 11, the arc heat source 12 and the laser beam heat source 11 are sequentially arranged along the circumferential direction of the butt joint, or the connecting line of the arc heat source 12 and the laser beam heat source 11 is crossed with the circumferential direction of the butt joint. That is, the laser beam is applied perpendicularly to the cut surface of the cylindrical docking ring of the petroleum pipeline 10, and the welding torch 41 is placed above the docking ring.
In some embodiments of the present invention, the laser-arc hybrid welding device for petroleum pipelines 10 further comprises two translation devices 60 installed on the welding bench 20. Each rotating device 30 is mounted to one of the translation devices 60 to move in the axial direction of the oil pipe 10 under the driving of the translation device 60. The rotating device 30 is moved by the translation device 60, so that the petroleum pipeline 10 can be conveniently installed, and after the petroleum pipeline 10 is installed, the rotating device 30 and the petroleum pipeline 10 on the rotating device 30 are conveyed to a preset position by the translation device 60 for welding. The rotating device 30 can be a positioner, and the maximum rotating speed is 2.211 rad/s. The translation device 60 may include a sliding table, a motor and a screw transmission mechanism, the motor drives the sliding table to move through the screw transmission mechanism, and the rotating device 30 may be installed on the sliding table.
In order to facilitate polishing of the petroleum pipeline 10, the laser-arc hybrid welding device for the petroleum pipeline 10 further comprises a polishing device 70 installed on the welding workbench 20, so that when the translation device 60 brings the corresponding petroleum pipeline 10 to the polishing station, the polishing device 70 performs groove polishing or butt ring polishing. The two polishing devices 70 are arranged on two sides of the laser head 51 and the welding gun 41 and respectively polish one oil pipeline 10, specifically polish a groove on one oil pipeline 10 and a butt-joint ring on the other oil pipeline 10. During operation, the translation device 60 can convey the petroleum pipeline 10 to the polishing station, and after being polished and cleaned, convey the petroleum pipeline 10 to the welding station for welding. Grinding device 70 is used for grinding the groove and the region within 5mm of the docking ring, and the cleanness of the welding region is guaranteed.
In some embodiments of the present invention, laser 50 is a fiber laser 50 with a maximum power of 10000W. The arc welding device 40 is a fornice welder, and the welding gun 41 can be a 45-degree welding gun 41 with a welding wire diameter of 1.2 mm. The petroleum pipeline 10 is a low-carbon steel pipe, the wall thickness is 6mm to 20mm, and the groove form at the butt joint is a Y-shaped groove. The diameter of the adopted welding wire is 1.2mm, the extension amount of the welding wire is controlled to be 10mm to 22mm, and the welding speed is controlled to be 1.0m/min to 1.4 m/min. The power of the laser 50 is 3000W to 4500W, the current of the welding gun 41 of the arc welding device 40 is 230A to 270A, the wire feeding speed of the arc welding device 40 is 5m/min to 9m/min, the arc length correction of the arc welding device 40 is controlled to be 10 percent to 30 percent, and the gas flow rate is controlled to be 15L/min to 28L/min.
Fig. 3 is a schematic flow chart of a laser-arc hybrid welding method for a petroleum pipeline 10 according to an embodiment of the present invention, as shown in fig. 3, the embodiment of the present invention further provides a laser-arc hybrid welding method for a petroleum pipeline 10, which includes:
the groove on one oil pipeline 10 and the butt ring on the other oil pipeline 10 are polished. And polishing the groove and the area within 5mm of the butt joint ring to ensure the cleanness of the welding area.
Two petroleum pipelines 10 are butted and spot welded at the butted joint. The two pipes are butted, and 4-8 different spot welding points can be applied according to the pipe diameter and the wall thickness.
The welding torch 41 of the arc welding apparatus 40 and the laser head 51 of the laser 50 are positioned outside the butt joint, and the torch tip is positioned downstream of the laser head 51 in the rotational direction of the petroleum pipeline 10. Specifically, the laser beam emitted by the laser head 51 extends in the radial direction of the butt joint, the angle α between the laser beam and the gun nozzle axis of the welding gun 41 is 30 ° to 50 °, and the interval between the laser beam heat source 11 and the arc heat source 12 formed at the butt joint is 2mm to 6 mm. The alignment can be performed by adjusting the position of the laser 50 and the arc welding gun 41 to align the docking collar, and the position of the petroleum pipeline 10 can also be adjusted to perform the alignment.
The two petroleum pipelines 10 are synchronously rotated, and the arc welding device 40 and the laser 50 are started for welding.
Preferably, the laser-arc hybrid welding method for the petroleum pipeline 10 can be implemented by using the laser-arc hybrid welding device for the petroleum pipeline 10 in any one of the above embodiments. The spot welding may be performed using the arc welding apparatus 40.
The utility model discloses an among some petroleum pipeline 10 laser arc hybrid welding methods, petroleum pipeline 10 is the low carbon steel pipe, and the wall thickness is 6mm to 20mm, and the groove form of butt joint department is Y shape groove. The diameter of the adopted welding wire is 1.2mm, the extension amount of the welding wire is controlled to be 10mm to 22mm, and the welding speed is controlled to be 1.0m/min to 1.4 m/min. The power of the laser 50 is 3000W to 4500W, the current of the welding gun 41 of the arc welding device 40 is 230A to 270A, the wire feeding speed of the arc welding device 40 is 5m/min to 9m/min, the arc length correction of the arc welding device 40 is controlled to be 10 percent to 30 percent, and the gas flow rate is controlled to be 15L/min to 28L/min.
The embodiment of the utility model provides a petroleum pipeline 10 laser electric arc hybrid welding device and welding method can have following advantage: by using laser-arc hybrid welding, which involves a laser beam and an arc welding gun 41 and a specific arrangement position, two heat sources are mutually compounded to act on a workpiece, so that welding is carried out. The laser head 51 and the welding gun 41 do not need to be frequently replaced and position adjusted, so that the processes before welding are reduced, the working period is shortened, and the welding efficiency is improved. Meanwhile, the scheme also reduces the assembly requirement of the butt joint gap and reduces the possible influence of the environment on the welding process. Moreover, the welding process is stable, the repeatability is high, the splashing in the welding process is small, and the obtained welding line is stable and attractive. The welding speed of the traditional submerged arc welding is generally 0.5 m/min-0.8 m/min, while the welding speed of the scheme can reach 1.0m/min-1.4m/min, which is improved by nearly 1 time compared with the previous and the next welding. Meanwhile, the scheme can achieve the weld penetration of about 7mm even under the condition of lower laser power, has good gap bridging capacity and can ensure the gap processing error of 0.5 mm.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (7)
1. The utility model provides a petroleum pipeline laser electric arc hybrid welding device, includes weldment work platform, its characterized in that still includes:
the two rotating devices are arranged on the welding workbench, and two petroleum pipelines for being welded are respectively arranged on the two rotating devices; the two rotating devices rotate synchronously, and the two petroleum pipelines are coaxially arranged and provided with butt joints;
an arc welding device attached to the welding table, the arc welding device having a welding torch; and
a laser mounted to the welding table, the laser having a laser head; and is
The laser head and a gun nozzle of the welding gun are arranged on the outer side of the butt joint, and the gun nozzle is positioned on the downstream side of the laser head along the rotation direction of the petroleum pipeline;
the laser beam of laser head transmission is followed the radial direction of butt joint department extends, the laser beam with the contained angle between the rifle mouth axis of welder is 30 to 50, and is in the interval between the laser beam heat source that the butt joint department formed and the electric arc heat source is 2mm to 6 mm.
2. The laser-arc hybrid welding device for petroleum pipelines as defined in claim 1, further comprising two translation devices mounted to said welding table;
each rotating device is mounted on one translation device so as to move along the axial direction of the petroleum pipeline under the driving of the translation device.
3. The laser-arc hybrid welding device for petroleum pipelines according to claim 2, further comprising a grinding device mounted on the welding bench to perform groove grinding or butt ring grinding when the translation device brings the corresponding petroleum pipeline to a grinding station.
4. The laser-arc hybrid welding device for petroleum pipelines according to claim 1,
the laser is a fiber laser, the electric arc welding device is a Foniss welding machine, and the rotating device is a positioner.
5. The laser-arc hybrid welding device for petroleum pipelines according to claim 1,
the petroleum pipeline is a low-carbon steel pipe, the wall thickness is 6mm to 20mm, and the groove form at the butt joint is a Y-shaped groove.
6. The laser-arc hybrid welding device for petroleum pipelines according to claim 1,
the diameter of the adopted welding wire is 1.2mm, the extension amount of the welding wire is controlled to be 10 mm-22 mm, and the welding speed is controlled to be 1.0m/min-1.4 m/min;
the power of the laser is 3000W to 4500W, the welding gun current of the arc welding device is 230A to 270A, the wire feeding speed of the arc welding device is 5m/min to 9m/min, the arc length correction of the arc welding device is controlled to be 10% to 30%, and the gas flow is controlled to be 15L/min to 28L/min.
7. The laser-arc hybrid welding device for petroleum pipelines as defined in claim 3,
grinding device is two, set up in the laser head with the both sides of welder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020617813.6U CN212122076U (en) | 2020-04-21 | 2020-04-21 | Petroleum pipeline laser electric arc hybrid welding device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020617813.6U CN212122076U (en) | 2020-04-21 | 2020-04-21 | Petroleum pipeline laser electric arc hybrid welding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113732548A (en) * | 2021-09-25 | 2021-12-03 | 宁波东鼎特种管业有限公司 | Automatic butt welding pipe machine and butt welding method thereof |
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- 2020-04-21 CN CN202020617813.6U patent/CN212122076U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113732548A (en) * | 2021-09-25 | 2021-12-03 | 宁波东鼎特种管业有限公司 | Automatic butt welding pipe machine and butt welding method thereof |
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