Welding apparatus for a cylinder
By using a first welding machine and a second welding machine to weld the inner and outer sides of the gaps in the cylinder section in the cylinder welding equipment, the problem of insufficient welding strength of the existing equipment is solved, and efficient and stable cylinder welding is achieved, meeting the needs of assembly line production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 聚变新能(安徽)有限公司
- Filing Date
- 2026-05-12
- Publication Date
- 2026-06-09
AI Technical Summary
Existing cylinder welding equipment uses a single welding method for cylinder sections, resulting in insufficient welding strength, which affects welding quality and cannot meet the needs of automated production.
The first and second welding machines are used to weld the inner and outer sides of the gap in the cylinder section, respectively. By combining the support structure and the welding structure, composite welding of the inner and outer sides of the gap is achieved, which improves the welding strength and quality, and improves efficiency through automatic welding.
This improved the welding strength and quality of the cylinder, meeting the needs of streamlined industrial production and achieving a highly efficient welding process.
Smart Images
Figure CN122165076A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cylindrical welding technology, and more particularly to a cylindrical welding device. Background Technology
[0002] Fusion devices require a large number of austenitic stainless steel cryogenic storage tanks. The tanks are composed of multiple cylindrical sections, each of which needs to be welded together after bending. Existing welding equipment has a relatively simple welding method for the cylindrical sections, and the welding strength of the cylindrical sections is insufficient, which affects the welding quality of the cylindrical sections and thus cannot meet the needs of streamlined production. There is room for improvement. Summary of the Invention
[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a welding device for a cylinder, which uses a first welding machine and a second welding machine to weld the inner and outer sides of the gaps in the cylinder section, respectively, thereby improving the welding strength and welding quality of the cylinder. Furthermore, the first and second welding machines are automatic welding machines, which can improve welding efficiency and meet the needs of industrial production.
[0004] According to an embodiment of the present invention, a welding apparatus for a cylindrical body is provided, the cylindrical body being adapted to be formed by circumferentially splicing together cylindrical sections. The welding apparatus is used to weld the gaps formed by splicing the cylindrical sections, and the welding apparatus includes: a support structure supported on the bottom of the cylindrical body, the support structure being adapted to drive the cylindrical body to rotate to adjust the position of the gaps in the cylindrical body; and a welding structure including a welding machine assembly, the welding machine assembly being movable relative to the support structure and adapted to extend into or out of the cylindrical body, the welding machine assembly including at least one first welding machine and at least one second welding machine, the first welding machine being used to weld the gaps when the welding machine assembly extends into the cylindrical body, and the second welding machine being used to weld the gaps when the welding machine assembly extends out of the cylindrical body.
[0005] According to the embodiment of the present invention, the welding equipment for the cylinder body can weld the gap by setting a first welding machine when the welding machine assembly extends into the cylinder body and a second welding machine when the welding machine assembly extends out of the cylinder body. This can achieve welding on the inner and outer sides of the gap of the cylinder section respectively, thereby improving the welding strength and welding quality of the cylinder body. Furthermore, the first and second welding machines are automatic welding machines, which can improve welding efficiency and meet the needs of industrial production.
[0006] According to some embodiments of the present invention, the welding equipment for the cylinder body includes two first welding machines and one second welding machine. The two first welding machines and one second welding machine are distributed axially spaced apart along the cylinder body and are all movable relative to the support structure. The cylinder has an outer bevel formed on the radial exterior of the gap. One of the two first welding machines is adapted to weld the gap, and the other is adapted to weld the inner surface of the cylinder in the gap. The second welding machine is adapted to weld the outer bevel of the cylinder in the gap.
[0007] According to some embodiments of the present invention, the support structure of the cylindrical welding equipment includes a sliding guide rail and a rolling support member. The rolling support member is slidably mounted above the sliding guide rail along the axial direction of the cylindrical body, and is supported on the bottom of the cylindrical body. The rolling support member is adapted to drive the cylindrical body to rotate.
[0008] According to some embodiments of the present invention, the welding equipment for the cylinder further includes a back protection assembly located at the bottom of the gap and adapted to press against the outer bevel of the gap; One of the two first welding machines is configured as a plasma arc welding machine, which is adapted to move along the axial direction of the cylinder to weld the gap when the gap is at the bottom.
[0009] According to some embodiments of the present invention, the back protection assembly of the cylinder welding equipment includes a back protection gas cover and a lifting structure. The lifting structure is movably mounted above the sliding guide rail and is adapted to press the back protection gas cover upward against the outer bevel of the gap.
[0010] According to some embodiments of the present invention, in the welding equipment for a cylinder, there are multiple rolling supports, which are spaced apart and supported at the bottom of the cylinder, and are distributed radially spaced on both sides of the back protection assembly.
[0011] According to some embodiments of the present invention, in a cylindrical welding apparatus, the rolling support includes a connected connecting body and a roller, the connecting body being connected to the sliding guide rail, and the roller being supported on the bottom of the cylindrical body.
[0012] According to some embodiments of the present invention, in the cylinder welding apparatus, the other of the two first welding machines is configured as an automatic argon arc welding machine, which is adapted to move along the axial direction of the cylinder to weld the inner surface of the gap when the gap is at the bottom.
[0013] According to some embodiments of the present invention, in a cylindrical welding apparatus, the rolling support is adapted to rotate the cylindrical body to rotate the gap to the top when rotating, and the second welding device is configured as a submerged arc welding machine, which is adapted to move relative to the support structure to the top of the gap and move outside the cylindrical body along the axial direction of the cylindrical body to weld the outer bevel of the gap.
[0014] According to some embodiments of the present invention, the welding equipment for the cylinder further includes a telescopic structure, the telescopic structure including a first telescopic structure and a second telescopic structure, at least one first welding machine and at least one second welding machine are respectively installed on the first telescopic structure, the first telescopic structure is telescopic along the axial direction of the cylinder, and the first telescopic structure is vertically and vertically connected to the mounting platform through the second telescopic structure.
[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a welding device for a cylinder according to an embodiment of the present invention; Figure 2 This is a partial schematic diagram of the cylinder according to an embodiment of the present invention; Figure 3 This is a schematic diagram of plasma arc welding of a cylindrical welding device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the plasma arc weld of the gap joint of the cylinder section according to an embodiment of the present invention; Figure 5 This is a schematic diagram of automatic argon arc welding of a cylindrical welding device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of an automated argon arc weld for a gap joint of a cylindrical section according to an embodiment of the present invention; Figure 7 This is a schematic diagram of submerged arc welding of a welding device for a cylinder according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the submerged arc weld of the gap joint of the cylinder section according to an embodiment of the present invention.
[0017] Figure label: 100 welding equipment for the cylinder body 1. Cylinder body, 11. Gap, 12. External bevel, 13. Cylinder section, 14. Plasma arc weld, 15. Automatic argon arc weld, 16. Submerged arc weld, 2. Support structure, 21. Sliding guide rail, 22. Rolling support, 221. Connector, 222. Roller, 222. Welding structure, 3. Welding machine assembly, 31. First welder, 311. Second welder, 312. Back protection assembly, 4. Back protection gas cover, 41. Lifting structure, 42. Telescopic structure, 5. First telescopic structure, 51. Second telescopic structure, 52. Column, 6. Detailed Implementation
[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means three or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of three components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0020] The following is for reference. Figures 1-8 The welding equipment 100 for the cylinder according to an embodiment of the present invention is described. The first welding machine 311 and the second welding machine 312 respectively weld the inner and outer sides of the gap 11 of the cylinder section 13, thereby improving the welding strength and welding quality of the cylinder 1. The first welding machine 311 and the second welding machine 312 are automatic welding machines, which can improve welding efficiency and meet the needs of industrial production.
[0021] like Figures 1-8 As shown, according to an embodiment of the present invention, a welding device 100 for a cylindrical body is provided. The cylindrical body 1 is adapted to be formed by splicing cylindrical sections 13 in the circumferential direction. The welding device is used to weld the gap 11 formed by splicing the cylindrical sections 13. The welding device includes a support structure 2 and a welding structure 3.
[0022] Specifically, the cylinder 1 can be formed by splicing together cylinder sections 13 circumferentially. Multiple cylinder sections 13 can be joined together circumferentially after bending. The cylinder 1 can be an austenitic stainless steel cryogenic storage tank, used in fusion devices. When multiple cylinder sections 13 are spliced circumferentially, gaps 11 are formed. These gaps 11 can be welded together using welding equipment, allowing the multiple cylinder sections 13 to form a single, integrated cylinder 1. Welding equipment improves the connection strength and reliability of the cylinder sections 13, thereby enhancing the structural strength and operational stability of the cylinder 1. The cylinder sections 13 can be two, three, four, etc. In this embodiment, there is only one cylinder section 13. Each cylinder section 13 is bent to form a gap 11, which is then welded together using welding equipment.
[0023] The support structure 2 is supported at the bottom of the cylinder 1 and is adapted to drive the cylinder 1 to rotate in order to adjust the position of the gap 11 in the cylinder 1; the welding structure 3 includes a welding machine assembly 31, which is movable relative to the support structure 2 and is adapted to extend into or out of the cylinder 1.
[0024] The support structure 2 provides support and fixation. It is positioned at the bottom of the cylinder 1, providing upward support to ensure structural stability. This ensures stability and quality during the welding process of the welding structure 3, which welds the gap 11 of the cylinder section 13. Furthermore, the support structure 2 can drive the cylinder 1 to rotate, allowing adjustment of the gap 11's position to match the welding method of the welding structure 3. This enhances welding convenience and versatility. When rotation of the cylinder 1 is not required, the support structure 2 provides support to the bottom of the cylinder 1.
[0025] The welding structure 3 includes a welding machine assembly 31, which is used to weld the gap 11 of the cylinder 1. The welding machine assembly 31 is movable relative to the support structure 2, that is, the position of the support structure 2 is relatively fixed. The movement mode of the welding machine assembly 31 relative to the support structure 2 can be linear motion, curvilinear motion, etc., and the welding machine assembly 31 can move between inside and outside the cylinder 1, so that the range of motion of the welding machine assembly 31 is large, so as to weld the gap 11 of the cylinder 1 from multiple aspects.
[0026] The welding assembly 31 includes at least one first welding machine 311 and at least one second welding machine 312. The first welding machine 311 is used to weld the gap 11 when the welding assembly 31 extends into the cylinder 1, and the second welding machine 312 is used to weld the gap 11 when the welding assembly 31 extends out of the cylinder 1.
[0027] The first welding machine 311 and the second welding machine 312 are both movable relative to the supporting structure 2. When the welding machine assembly 31 extends into the cylinder 1, the first welding machine 311 can weld the gap 11 as it moves with the welding machine assembly 31. When the welding machine assembly 31 extends outside the cylinder 1, the second welding machine 312 can weld the gap 11 as it moves with the welding machine assembly 31. Welding of the gap 11 can be performed both inside and outside the cylinder 1. At least one first welding machine 311 and at least one second welding machine 312 are provided; that is, the number of first welding machines 311 and at least one second welding machine 312 can be one, two, three, etc. In actual design, the number of first welding machines 311 and at least one second welding machine 312 can be the same or different.
[0028] Furthermore, the first welding machine 311 can weld on either the inner or outer side of the gap 11, while the second welding machine 312 can weld on the outer side of the gap 11. The first welding machine 311 and the second welding machine 312 can operate at different times, meaning they can perform distributed welding on the gap 11, achieving welding from multiple angles and improving welding quality and reliability. Moreover, the first welding machine 311 and the second welding machine 312 can be of different types to achieve different welding combinations, further enhancing the welding quality of the gap 11.
[0029] Thus, by setting the welding machine assembly 31 to move between inside and outside the cylinder 1, the cylinder section 13 can be composite welded by the first welding machine 311 and the second welding machine 312. The integrated setup of the first welding machine 311 and the second welding machine 312 effectively meets the welding process requirements of the cylinder 1, improving the welding reliability and quality. Furthermore, the welding method of the first welding machine 311 and the second welding machine 312 is automatic, automating the welding process of the cylinder 1, improving welding efficiency, and adapting to the production needs of a large number of cylinder sections 13 in actual production, enabling streamlined operations and facilitating industrial production.
[0030] According to the embodiment of the present invention, the welding equipment 100 for the cylinder section 13 can weld the gap 11 by setting the first welding machine 311 to weld the gap 11 when the welding machine assembly 31 extends into the cylinder 1, and the second welding machine 312 to weld the gap 11 when the welding machine assembly 31 extends out of the cylinder 1. This can achieve welding on the inner and outer sides of the gap 11 of the cylinder section 13, thereby improving the welding strength and welding quality of the cylinder 1. Furthermore, the first welding machine 311 and the second welding machine 312 are automatic welding machines, which can improve welding efficiency and meet the needs of industrial production.
[0031] In some embodiments, there are two first welding machines 311 and one second welding machine 312. The two first welding machines 311 and one second welding machine 312 are distributed axially spaced along the cylinder 1 and are all movable relative to the support structure 2.
[0032] Specifically, such as Figure 1 As shown, two first welding machines 311 and one second welding machine 312 are spaced apart along the axial direction of the cylinder 1, that is, three welding machines are distributed along the axial direction of the cylinder 1. The axial space of the cylinder 1 is relatively large, which allows the two first welding machines 311 and one second welding machine 312 to be reasonably distributed. Moreover, the two first welding machines 311 and one second welding machine 312 are movable relative to the support structure 2, so that the two first welding machines 311 and one second welding machine 312 can weld the gap 11 respectively. Furthermore, the two first welding machines 311 and one second welding machine 312 can move in different ways relative to the support structure 2 to meet their respective welding paths and requirements.
[0033] Among them, such as Figure 2 As shown, the cylinder 1 has an outer bevel 12 formed on the radial outside of the gap 11. One of the two first welding machines 311 is suitable for welding the gap 11, and the other is suitable for welding the inner surface of the cylinder 1 on the gap 11. The second welding machine 312 is suitable for welding the outer bevel 12 of the cylinder 1 on the gap 11.
[0034] In this way, one of the first welding machines 311 can weld the seam 11 to connect the cylinder 1 into a whole at the seam 11; another first welding machine 311 can weld the inner surface of the cylinder 1 at the seam 11 to connect the cylinder 1 into a whole at the inner surface of the seam 11; and a second welding machine 312 can weld the outer bevel 12 of the cylinder 1 at the seam 11 to connect the cylinder 1 into a whole at the outside of the seam 11, thus achieving welding of the seam 11 from three aspects. Furthermore, the two first welding machines 311 and the second welding machine 312 are of different types, allowing welding to be performed at different locations on the seam 11. Also, the two first welding machines 311 and the second welding machine 312 can operate at different times.
[0035] Thus, by welding the gap 11, it can serve as a root pass weld, and by welding the inner surface of the cylinder 1 on the gap 11, a cover pass weld on the inner surface of the gap 11 can be achieved, which can remelt the inside of the gap 11, eliminate surface defects, and obtain a beautiful weld bead. Furthermore, by welding the cylinder 1 at the outer bevel 12 of the gap 11, efficient composite welding of the cylinder 1 can be achieved, which is convenient for assembly line operation and can ensure the quality of the weld.
[0036] Among them, such as Figure 2As shown, when the cylindrical section 13 is bent, an external bevel 12 is provided on the radially outer side of the gap 11 in the cylindrical body 1. The included angle formed at the external bevel 12 can be a right angle. Welding can be performed on the outside of the gap 11 through the external bevel 12, which helps to improve the welding strength of the outside of the gap 11. The length L in the inward and outward directions of the gap 11 can be set to less than or equal to 8mm, which can ensure full penetration welding and avoid the problem of incomplete welding due to excessively thick blunt edges, thereby effectively improving the welding reliability of the first welding machine 311. Moreover, the bending size of the cylindrical section 13 is not limited to the above-mentioned limit and can be set according to the actual production needs.
[0037] In some embodiments, the support structure 2 includes a sliding guide rail 21 and a rolling support member 22. The rolling support member 22 is slidably mounted above the sliding guide rail 21 along the axial direction of the cylinder 1. The rolling support member 22 is supported on the bottom of the cylinder 1 and is adapted to drive the cylinder 1 to rotate.
[0038] Specifically, such as Figure 1 As shown, the rolling support 22 is installed above the sliding guide rail 21 and can slide relative to the sliding guide rail 21 along the axial direction of the cylinder 1. The sliding guide rail 21 includes a fixed part and a sliding part. The sliding part is slidably connected to the fixed part, and the sliding direction of the two is along the axial direction of the cylinder 1. The rolling support 22 can be connected to the sliding part, so that the rolling support 22 can slide relative to the fixed part along the axial direction of the cylinder 1. The structure is simple, the installation is convenient, and the cost is low.
[0039] Furthermore, the rolling support 22 provides support. It rests on the bottom of the cylinder 1, thus supporting the cylinder 1. The rolling support 22 can slide relative to the sliding guide rail 21 along the axial direction of the cylinder 1. This allows adjustment of the axial position of the rolling support 22 relative to the cylinder 1, thereby adjusting the reliability of the support provided by the rolling support 22. The rolling support 22 also has a rotational function. When the position of the cylinder 1 needs adjustment, the rolling support 22 can drive the cylinder 1 to rotate. This rotation adjusts the position of the gap 11 in the cylinder 1, facilitating welding of the adjusted gap 11 by the welding assembly 31.
[0040] Thus, by setting the rolling support 22, the cylinder 1 can be supported, and the position of the gap 11 in the cylinder 1 can be adjusted, making the structure simpler and the operation process simpler.
[0041] The sliding guide rail 21 can be constructed as a slide rail slider, and the slider is slidably connected to the slide rail. The rolling support 22 can be connected to the slider. The slider enables the rolling support 22 to move linearly relative to the slide rail. An automatic drive structure can also be provided below the rolling support 22. The automatic drive structure can drive the lead screw slider or cylinder through a motor to achieve automatic drive of the rolling support 22.
[0042] In some embodiments, the welding equipment 100 for the cylinder further includes a back protection component 4, which is located at the bottom of the gap 11 and is adapted to be pressed against the outer bevel 12 of the gap 11.
[0043] Specifically, the back protection component 4 has a back protection function. When the gap 11 is at the bottom, the outer bevel 12 is located at the bottom of the gap 11. By placing the back protection component 4 at the bottom of the gap 11, the back protection component 4 can press the outer bevel 12 of the gap 11 to provide back protection for the bottom of the gap 11. When it is not necessary to provide back protection for the gap 11, the back protection component 4 can not press the outer bevel 12 of the gap 11. That is, by selectively pressing the outer bevel 12 of the gap 11 by the back protection component 4, selective back protection for the gap 11 can be achieved.
[0044] One of the two first welding machines 311 is a plasma arc welding machine. The plasma arc welding machine is suitable for moving along the axial direction of the cylinder 1 to weld the gap 11 when the gap 11 is at the bottom. In actual use, when the gap 11 of the cylinder 1 is at the bottom, the back protection component 4 provides back protection for the outer bevel 12 of the gap 11, and the plasma arc welding machine extends into the cylinder 1 along with the welding machine component 31. The plasma arc welding machine can weld the gap 11 along the axial direction of the cylinder 1.
[0045] like Figure 3 As shown, the assembled cylindrical section 13 is hoisted onto the rolling support 22 of the support structure 2. The oil, water, rust and other impurities in the area to be welded are thoroughly cleaned. The bottom of the outer bevel 12 is pressed by the back protection component 4, and pure argon is introduced as the back protection gas. Then, plasma arc welding is performed at the gap 11 to achieve plasma arc welding of the gap 11 as the root pass. Plasma welding can reduce the amount of filler material, and plasma welding forms a high-temperature plasma (temperature can reach more than 30,000℃) by compressing the arc. Its high energy density is used to achieve deep penetration and improve the welding quality of the cylindrical section 1.
[0046] In some embodiments, the back protection assembly 4 includes a back protection air cover 41 and a lifting structure 42. The lifting structure 42 is mounted above the sliding guide rail 21 in a lifting manner and is adapted to press the back protection air cover 41 upward against the outer bevel 12 of the gap 11.
[0047] Specifically, the back protective gas cover 41 continuously introduces an inert gas (such as argon) into the back of the gap 11 to form a local protective gas layer, which isolates the air from the molten pool and avoids oxidation contamination. The back protective gas cover 41 is set at the outer bevel 12 of the gap 11, so that argon can be introduced into the outer bevel 12 to back protect the gap 11 at the outer bevel 12, ensuring that the plasma welding forms a uniform and smooth weld, thereby ensuring the welding quality of the gap 11.
[0048] The lifting structure 42 has a lifting function. It is mounted above the sliding guide rail 21 and connected to the bottom of the back protective air cover 41. Through the lifting action of the lifting structure 42, the back protective air cover 41 can be moved upwards to press against the outer bevel 12 of the gap 11. When the outer bevel 12 is not needed for protection, the lifting structure 42 moves the back protective air cover 41 downwards to separate it from the outer bevel 12. The lifting structure 42 can be constructed in two sets, spaced apart along the length of the back protective air cover 41, allowing the back protective air cover 41 to be moved closer to or further away from the gap 11 at two different positions.
[0049] In actual use, when the first welding machine 311 welds the gap 11, the back shielding gas hood 41 introduces pure argon (purity ≥99.99%, flow rate 15-20 L / min) into the external bevel 12. Then, plasma arc self-fusion welding is performed. During welding, plasma gas is applied at a flow rate of 6-6.5 L / min, current polarity: DC positive, welding current: 200-250 A, arc voltage: 24-32 V, welding speed: 15-25 cm / min. The plasma arc weld 14 formed after welding is as follows: Figure 4 As shown.
[0050] The lifting structure 42 can be constructed as a cylinder, hydraulic rod, or other structure, and can be selected according to actual space requirements.
[0051] In some embodiments, there are multiple rolling supports 22, which are spaced apart and supported at the bottom of the cylinder 1.
[0052] Specifically, by distributing multiple rolling support members 22 at intervals at the bottom of the cylinder 1, the cylinder 1 can be supported at multiple spaced positions at the bottom of the cylinder 1, thereby improving the stability and reliability of the support structure 2 for the cylinder 1. Among them, the multiple rolling support members 22 can be evenly distributed at intervals at the bottom of the cylinder 1 to achieve uniform support for the cylinder 1, further improving the structural stability of the cylinder 1.
[0053] Furthermore, multiple rolling support members 22 are distributed radially and spaced apart on both sides of the back protection assembly 4. That is, the bottom of the cylinder 1 can be supported radially by the multiple rolling support members 22. The multiple rolling support members 22 are distributed radially and spaced apart on both sides of the back protection assembly 4 to avoid interference between the multiple rolling support members 22 and the back protection assembly 4. The back protection assembly 4 is located at the bottom of the outer bevel 12 of the gap 11. That is, the multiple rolling support members 22 are located radially and spaced apart on both sides of the gap 11 to support the cylinder 1 on both sides of the gap 11, thereby improving the support stability of the area to be welded on the cylinder 1 and thus improving the welding quality.
[0054] The rolling support members 22 can be two, three, four, five, etc. In this embodiment, for example... Figure 1 As shown, there are four rolling support members 22. Two of the four rolling support members 22 are grouped together to form two groups of rolling support members 22 that are distributed radially apart along the cylinder 1, which improves the support stability of the bottom of the cylinder 1.
[0055] In some embodiments, the rolling support 22 includes a connecting body 221 and a roller 222 connected together. The connecting body 221 is connected to the sliding guide rail 21, and the roller 222 is supported on the bottom of the cylinder 1.
[0056] Specifically, the connecting body 221 serves a connecting function. Connecting the connecting body 221 to the sliding guide rail 21 allows the rolling support 22 to be connected to the sliding guide rail 21. The connecting body 221 can be detachably connected to the upper part of the sliding guide rail 21 using fasteners such as bolts, making the connection simple and convenient. Furthermore, the connecting body 221 is connected below the roller 222, and the sliding guide rail 21 is located below the rolling support 22, allowing the connecting body 221 to be close to the sliding guide rail 21, facilitating the connection between the connecting body 221 and the sliding guide rail 21. The cylinder 1 is located above the rolling support 22, meaning the roller 222 is close to the bottom of the cylinder 1, facilitating the support of the bottom of the cylinder 1 by the roller 222. The roller 222 can be detachably connected to the connecting body 221, and the roller 222 can rotate relative to the connecting body 221. Thus, the rotation of the roller 222 can drive the cylinder 1 to rotate, thereby adjusting the position of the gap 11 in the cylinder 1. The overall structure is simple and low-cost.
[0057] The rolling support 22 and the back protection assembly 4 can be spaced apart and installed above the sliding guide rail 21 through a connecting plate. In this way, the sliding guide rail 21 can drive the rolling support 22 and the back protection assembly 4 to move simultaneously through the connecting plate, so as to adjust the position of the rolling support 22 and the back protection assembly 4 relative to the cylinder 1.
[0058] In some embodiments, the other of the two first welding machines 311 is configured as an automatic argon arc welding machine. The automatic argon arc welding machine is adapted to move along the axial direction of the cylinder 1 to weld the inner surface of the gap 11 when the gap 11 is at the bottom. That is, when the gap 11 of the cylinder 1 is at the bottom, the automatic argon arc welding machine extends into the cylinder 1 along the welding machine assembly 31. The automatic argon arc welding machine can weld the inner surface of the gap 11 along the axial direction of the cylinder 1 to achieve the cover welding of the gap 11.
[0059] Thus, when the gap 11 of the cylinder 1 is located at the bottom, the gap 11 is first welded by plasma arc welding machine to form the root pass, and then the inner surface of the gap 11 is welded by automatic argon arc welding machine to form the cover pass. This allows for two composite welding processes, improving the welding reliability of the cylinder 1 on the inner surface of the gap 11. Furthermore, the automatic argon arc welding process is simple and low-cost.
[0060] like Figure 5 As shown, the welding machine assembly 31 moves relative to the supporting structure 2 to adjust the position of the automatic TIG welding machine, aligning it with the arc initiation position. The interpass temperature is controlled to ≤60℃, and then automatic TIG welding begins. The shielding gas flow rate is adjusted (purity ≥99.99%, flow rate 20-25L / min). The welding material is ER308L, 1.2mm in diameter. The current polarity is DC positive, welding current is 160-220A, arc voltage is 10-15V, wire feed speed is 150cm / min, and welding speed is 15-25cm / min. The resulting automatic TIG weld 15 is shown in the image. Figure 6 As shown.
[0061] In some embodiments, the rolling support 22 is adapted to rotate the cylinder 1 so that the gap 11 rotates to the top when it rotates, and the second welding machine 312 is configured as a submerged arc welding machine, which is adapted to move relative to the support structure 2 to the top of the gap 11 and move outside the cylinder 1 along the axial direction of the cylinder 1 to weld the outer bevel 12 of the gap 11.
[0062] Specifically, the rolling support 22 can drive the cylinder 1 to rotate during rotation, and can drive the cylinder 1 to rotate until the gap 11 is at the top. At this point, the rolling support 22 stops moving, supporting the cylinder 1 in this position to ensure the gap 11 is fixed. The second welding machine 312 is a submerged arc welding machine. The submerged arc welding machine can move relative to the support structure 2 to the outside of the cylinder 1 and to the top of the gap 11. When the gap 11 rotates to the top with the cylinder 1, the outer bevel 12 is located at the top of the gap 11. At this time, the submerged arc welding machine moves with the welding machine assembly 31 to the top of the outer bevel 12 of the gap 11. The submerged arc welding machine can weld the outer bevel 12 of the gap 11 along the axial direction of the cylinder 1, achieving the capping welding of the outer side of the gap 11. Submerged arc welding is suitable for mass production and has high welding cost-effectiveness.
[0063] Thus, when the gap 11 of the cylinder 1 is at the bottom, the inner surface of the gap 11 is welded by a plasma arc welding machine and an automatic argon arc welding machine, improving the welding reliability of the cylinder 1 on the inner surface of the gap 11. When the gap 11 of the cylinder 1 is at the top, the outer bevel 12 of the gap 11 is welded by a submerged arc welding machine, improving the welding reliability of the cylinder 1 on the outside of the gap 11. Through the above three composite welding processes, the welding quality and welding strength of the cylinder 1 are effectively improved.
[0064] Among them, such as Figure 7 As shown, the rollers 222 driving the rolling support 22 rotate the cylinder 1 180° so that the outer bevel 12 faces upward. Then, the submerged arc welding machine is adjusted to align with the center of the outer bevel 12 and the arc ignition position. The interpass temperature is controlled to be ≤60℃, and submerged arc welding begins. The submerged arc welding wire used is ER308L with a diameter of 4mm. The current polarity is DC reverse polarity. The welding current is 480-580A, the arc voltage is 34-38V, and the welding speed is 40-60cm / min. The submerged arc weld 16 formed after welding is shown in the figure. Figure 8 As shown.
[0065] In some embodiments, the welding equipment 100 for the cylinder further includes a telescopic structure 5, which includes a first telescopic structure 51 and a second telescopic structure 52. At least one first welding machine 311 and at least one second welding machine 312 are respectively installed on the first telescopic structure 51. The first telescopic structure 51 is telescopic along the axial direction of the cylinder 1. The first telescopic structure 51 is vertically and vertically connected to the installation platform through the second telescopic structure 52.
[0066] Specifically, at least one first welding machine 311 and at least one second welding machine 312 are respectively installed on the first telescopic structure 51, which enables the connection and fixation of the first welding machine 311 and the second welding machine 312. The first welding machine 311 and the second welding machine 312 can be detachably connected to the first telescopic structure 51 by bolts or other fasteners. The connection method is simple and facilitates the disassembly and maintenance of the first welding machine 311 and the second welding machine 312. The first telescopic structure 51 has a telescopic function and can extend and retract along the axial direction of the cylinder 1. By connecting the first welding machine 311 and the second welding machine 312 to the movable end of the first telescopic structure 51, the first welding machine 311 and the second welding machine 312 can move along the axial direction of the cylinder 1 to achieve welding of the gap 11.
[0067] The first telescopic structure 51 is connected to the second telescopic structure 52, which is connected to the installation platform. This means the first telescopic structure 51 can be fixed and connected via the second telescopic structure 52. The second telescopic structure 52 also has a lifting function, allowing the first telescopic structure 51 to move up and down relative to the installation platform. This, in turn, allows the first welding machine 311 and the second welding machine 312 to move up and down via the first telescopic structure 51. Furthermore, the first welding machine 311 and the second welding machine 312 can move along the axial direction of the cylinder 1 via the first telescopic structure 51, enabling them to move in two different directions, facilitating welding of the gap 11. The installation platform can be the ground or other supporting structures.
[0068] The fixed end of the second telescopic structure 52 is connected to the column 6, which can fix the second telescopic structure 52. The second telescopic structure 52 can be constructed as a structure that can realize the lifting function through a motor and lead screw or chain gear. The first telescopic structure 51 can be constructed as a rope structure, which can be driven by a hydraulic cylinder. Through the ratio relationship between the wire rope and the pulley block, it can drive the multi-section arm to extend and retract synchronously or sequentially. Alternatively, it can be constructed as a gear rack or lead screw driven, where the motor drives the gear to roll on the fixed rack, or the lead screw rotates to drive the slider to move, so as to realize the extension and retraction of the first telescopic structure 51.
[0069] Furthermore, the first welding machine 311 and the second welding machine 312 can be combined using the two linear telescopic structures mentioned above, or the first welding machine 311 and the second welding machine 312 can perform multi-degree-of-freedom movements using robots or the like. The setup method is not limited and can be set according to actual needs and space requirements.
[0070] Thus, through the aforementioned automated driving and welding methods, assembly line operation can be achieved, which is beneficial to industrial production. Assembly line operation, through the automation mode of mechanical structure and software automation, can clearly define the welding method and welding process that matches the material of the workpiece and the joint size. In this way, combining the two can achieve automated and stable welding of the weld seam of cylinder 1.
[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0072] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A welding device for a cylindrical body, characterized in that, The cylindrical body is adapted to be formed by splicing cylindrical sections circumferentially, and the welding equipment is used to weld the gaps formed by splicing the cylindrical sections, and the welding equipment includes: A support structure is provided, which is supported at the bottom of the cylinder and is adapted to drive the cylinder to rotate in order to adjust the position of the gap in the cylinder. A welding structure, the welding structure including a welding machine assembly, the welding machine assembly being movable relative to the support structure and adapted to extend into or out of the cylinder, the welding machine assembly including at least one first welding machine and at least one second welding machine, the first welding machine being used to weld the gap when the welding machine assembly extends into the cylinder, and the second welding machine being used to weld the gap when the welding machine assembly extends out of the cylinder.
2. The welding equipment for the cylinder according to claim 1, characterized in that, There are two first welding machines and one second welding machine. The two first welding machines and one second welding machine are distributed at intervals along the axial direction of the cylinder and are all movable relative to the support structure. The cylinder has an outer bevel formed on the radial exterior of the gap. One of the two first welding machines is adapted to weld the gap, and the other is adapted to weld the inner surface of the cylinder in the gap. The second welding machine is adapted to weld the outer bevel of the cylinder in the gap.
3. The welding equipment for the cylinder according to claim 2, characterized in that, The support structure includes a sliding guide rail and a rolling support member. The rolling support member is slidably mounted above the sliding guide rail along the axial direction of the cylinder. The rolling support member is supported at the bottom of the cylinder and is adapted to drive the cylinder to rotate.
4. The welding equipment for the cylinder according to claim 3, characterized in that, It also includes a back protection component located at the bottom of the gap, the back protection component being adapted to press against the outer bevel of the gap; One of the two first welding machines is configured as a plasma arc welding machine, which is adapted to move along the axial direction of the cylinder to weld the gap when the gap is at the bottom.
5. The welding equipment for the cylinder according to claim 4, characterized in that, The back protection assembly includes a back protection air cover and a lifting structure. The lifting structure is mounted vertically above the sliding guide rail and is adapted to press the back protection air cover upward against the outer bevel of the gap.
6. The welding equipment for the cylinder according to claim 4, characterized in that, There are multiple rolling supports, which are spaced apart and supported at the bottom of the cylinder, and are distributed radially on both sides of the back protection assembly.
7. The welding equipment for the cylinder according to claim 4, characterized in that, The rolling support includes a connecting body and a roller connected together. The connecting body is connected to the sliding guide rail, and the roller is supported at the bottom of the cylinder.
8. The welding equipment for the cylinder according to claim 4, characterized in that, The other of the two first welding machines is configured as an automatic argon arc welding machine, which is adapted to move along the axial direction of the cylinder when the gap is at the bottom to weld the inner surface of the gap.
9. The welding equipment for the cylinder according to claim 3, characterized in that, The rolling support is adapted to drive the cylinder to rotate so that the gap rotates to the top when it rotates. The second welding device is a submerged arc welding machine, which is adapted to move relative to the support structure to the top of the gap and move outside the cylinder along the axial direction of the cylinder to weld the outer bevel of the gap.
10. The welding equipment for the cylinder according to claim 1, characterized in that, It also includes a telescopic structure, which includes a first telescopic structure and a second telescopic structure. At least one first welding machine and at least one second welding machine are respectively installed on the first telescopic structure. The first telescopic structure is telescopic along the axial direction of the cylinder. The first telescopic structure is vertically and vertically connected to the installation platform through the second telescopic structure.