Annular welding system for pressure vessel

Abstract

The invention discloses an annular welding system for a pressure vessel in the technical field of welding equipment, which comprises a welding unit, a base for fixing, a telescopic cylinder arranged on the side surface of the base, a fixing part on the same side with the telescopic cylinder, a motor arranged at one end of the fixing part, and a bearing part inserted into the fixing part, the two sets of welding parts are symmetrically arranged at the two ends of the bearing part and located on the same vertical line, and the supporting part is arranged on the inner side of the bearing part. By arranging the welding unit capable of circumferentially rotating around the welding seam, welding operation on the annular welding seam is achieved, the tank body which is centered, clamped and fixed does not need to be additionally moved, the dislocation phenomenon is effectively avoided, the working effect of welding operation is guaranteed, and the welding efficiency is improved. And meanwhile, the welding range of the welding unit can be correspondingly adjusted along with the diameter of the tank body to be welded, more use requirements can be met, and the use flexibility of the device is further enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to an annular welding system for a pressure vessel. Background Art

[0002] A pressure vessel refers to a closed device that contains gas or liquid and bears a certain pressure. It is usually in the shape of a round tank. In the production process of pressure vessels, the steel plate is squeezed into two half-tank shapes, and the two tank bodies are centered and clamped by a clamping mechanism. The two tank bodies are then brought close to each other and the openings of the tank bodies are abutted. Finally, the two tank bodies are welded at the abutment position to form a complete tank structure. Since the abutment of the two groups of tank bodies is a ring structure, the welding method is also called ring welding or girth welding.

[0003] In the prior art, when performing annular welding, the welding head of the welding equipment will remain stationary at a certain point of the annular weld, and the clamped tank body will be driven to rotate in a circle through the clamping device in a clamping posture, so that every position of the annular weld can pass through the welding head position, thereby realizing the annular welding operation; however, rotating the tank body that has been centering and clamped again will cause the clamped tank body to loosen and shift, thereby causing the two groups of tank bodies to be misaligned, and the weld cannot be accurately aligned, causing welding deviation, seriously affecting the welding effect. At the same time, most of the annular welding devices on the market are currently unable to weld welded parts of different diameters, making the welding technique single and unable to meet the diversified needs of the market. Summary of the invention

[0004] In view of the above problems existing in the existing annular welding system for pressure vessels, the inventors hereby propose an annular welding system for pressure vessels to solve such problems.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a circular welding system for a pressure vessel, comprising: a welding unit, including a base for fixing, a telescopic cylinder arranged on the side of the base, a fixing component on the same side as the telescopic cylinder, a motor arranged at one end of the fixing component, a bearing component inserted into the fixing component, two groups of welding components symmetrically arranged at both ends of the bearing component, and the two groups of welding components are on the same vertical line, a supporting component arranged on the inner side of the bearing component, and an adjusting component arranged on the inner side of the bearing component in a vertical direction, and both ends of the adjusting component extend through the supporting component into the bearing component.

[0006] As a preferred solution of the annular welding system for a pressure vessel described in the present invention, the fixing component includes a main fixing frame and a secondary fixing frame that are symmetrically arranged, and both the main fixing frame and the secondary fixing frame are semi-circular arc structures, a connecting plate is transversely arranged at the center position of the outer side of the main fixing frame, and a fixing seat is arranged on one side of the top of the main fixing frame, and a connecting plate is also arranged on the secondary fixing frame, and the ends of the two sets of connecting plates are fixedly connected.

[0007] As a preferred solution of the annular welding system for a pressure vessel of the present invention, the fixing component further includes a first slide groove opened on the inner side of the main fixing frame, a second slide groove opened on the auxiliary fixing frame and opposite to the first slide groove, and a clearance groove located between the first slide groove and the second slide groove, and the clearance groove separates the main fixing frame from the auxiliary fixing frame in the vertical direction, and the two sides of the bearing component extend into the first slide groove and the second slide groove respectively.

[0008] As a preferred solution of the annular welding system for a pressure vessel of the present invention, the motor is fixedly arranged on a fixing seat, a gear is arranged on one side of the motor, and the gear is meshed with the inner side of the bearing component.

[0009] As a preferred solution of the annular welding system for a pressure vessel described in the present invention, the bearing component includes a sliding frame with an arc structure, and the arc angle of the sliding frame is greater than half a circle, one side of the sliding frame is located in the second slide groove, a driving frame is fixedly arranged on the other side of the sliding frame, and a limiting frame is fixedly arranged on one side of the driving frame, and the driving frame and the limiting frame are also arc structures greater than half a circle.

[0010] As a preferred solution of the annular welding system for the pressure vessel of the present invention, two groups of fixing rings are symmetrically arranged on the sliding frame, and the two groups of welding components are correspondingly inserted into the two groups of fixing rings, a connecting shaft is arranged on the inner side of the center of the sliding frame, and teeth meshing with the gears are opened on the inner diameter of the driving frame.

[0011] As a preferred solution of the annular welding system for the pressure vessel described in the present invention, the welding component includes a limiting rod vertically inserted in the fixing ring, a welding assembly arranged at the end of the limiting rod, a connecting seat located between the limiting rod and the welding assembly, and a connecting port laterally opened in the connecting seat, and the supporting component passes through the connecting port.

[0012] As a preferred solution of the annular welding system for the pressure vessel described in the present invention, the supporting component includes two groups of arc-shaped support rods, and the ends of the two groups of support rods close to each other are rotatably connected to the connecting shaft, and arc grooves are opened on the left and right sides of each group of support rods, and rectangular grooves are opened on the front and back sides of each group of support rods, and the adjusting component passes through the rectangular groove in the vertical direction.

[0013] As a preferred solution of the annular welding system for the pressure vessel described in the present invention, the adjusting component includes an adjusting shaft vertically arranged between two groups of support rods, two groups of threaded shafts symmetrically arranged at both ends of the adjusting shaft, and the threaded shafts vertically extend through the rectangular groove to the sliding frame, and a limiting ball arranged at the top end of each group of threaded shafts, and the diameter of the limiting ball is larger than the diameter of the threaded shaft.

[0014] As a preferred solution of the annular welding system for pressure vessels described in the present invention, the adjusting component also includes a sleeve threadedly connected to each set of threaded shafts, an extension shaft laterally arranged on both sides of the sleeve, and the extension shaft extends outward into the arc groove.

[0015] The beneficial effects of the present invention are as follows: by providing a welding unit that can rotate in a circle around the weld, the operation of welding the annular weld can be realized without the need to additionally move the tank body that has been fixed by the centering clamp, thereby effectively avoiding the occurrence of misalignment and ensuring the working effect of the welding operation. At the same time, the welding unit can follow the diameter of the tank body to be welded and adjust the welding range accordingly, thereby meeting more usage requirements and further enhancing the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is a schematic diagram of the overall structure of the annular welding system for the pressure vessel of the present invention.

[0017] Figure 2 It is a schematic structural diagram of fixing components of an annular welding system for a pressure vessel of the present invention.

[0018] Figure 3 It is a plan view of the internal notches of the fixing parts of the annular welding system for the pressure vessel of the present invention.

[0019] Figure 4 This is a cross-sectional view of a bearing component of a circular welding system for a pressure vessel of the present invention installed in a fixed component.

[0020] Figure 5 It is a schematic structural diagram of the bearing components of the annular welding system for the pressure vessel of the present invention.

[0021] Figure 6 It is a schematic structural diagram of welding components of an annular welding system for a pressure vessel of the present invention.

[0022] Figure 7It is a plan view from the front and side perspectives of the supporting component of the annular welding system for the pressure vessel of the present invention.

[0023] Figure 8 It is a schematic structural diagram of the regulating component of the annular welding system for the pressure vessel of the present invention.

[0024] Fig. 9 It is a structural schematic diagram of the top installation position of the adjusting component of the annular welding system for the pressure vessel of the present invention.

[0025] Fig.10 It is a schematic structural diagram of the pressure vessel of the present invention when the annular welding system is used for annular welding.

[0026] Fig.11 The present invention is a schematic structural diagram of the annular welding system for pressure vessels of the present invention for annular welding of tanks of different sizes.

[0027] Reference numerals: 100, welding unit; 101, base; 102, telescopic cylinder; 103, fixing member; 103a, main fixing frame; 103b, auxiliary fixing frame; 103c, connecting plate; 103d, fixing seat; 103e, first slide groove; 103f, second slide groove; 103g, clearance groove; 104, motor; 104a, gear; 105, bearing member; 105a, sliding frame; 105b, driving frame; 105c, limiting frame; 105d, Fixed ring; 105e, connecting shaft; 105f, teeth; 106, welding component; 106a, limiting rod; 106b, welding assembly; 106c, connecting seat; 106d, connecting port; 107, supporting component; 107a, supporting rod; 107b, arc groove; 107c, rectangular groove; 108, adjusting component; 108a, adjusting shaft; 108b, threaded shaft; 108c, limiting ball; 108d, bushing; 108e, extension shaft; G, annular weld. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Example 1 Reference Figures 1 to 11, which is the first embodiment of the present invention, includes a circular welding system for a pressure vessel, including a welding unit 100, including a base 101 for fixing, a telescopic cylinder 102 arranged on the side of the base 101, a fixing component 103 on the same side as the telescopic cylinder 102, a motor 104 arranged at one end of the fixing component 103, a bearing component 105 inserted into the fixing component 103, two groups of welding components 106 symmetrically arranged at both ends of the bearing component 105, and the two groups of welding components 106 are on the same vertical line, a supporting component 107 arranged on the inner side of the bearing component 105, and an adjusting component 108 arranged on the inner side of the bearing component 105 in a vertical direction, and both ends of the adjusting component 108 pass through the supporting component 107 and extend into the bearing component 105.

[0031] During use, the base 101 is used to support the entire fixed device. According to actual needs, the device can be fixed at any position such as the top, bottom, left, and right of the centering clamping device through the cooperation of bolts and the base 101. The end of the telescopic cylinder 102 is fixedly connected to the base 101, and the top is fixedly connected to the side of the fixed component 103. By controlling the telescopic cylinder 102 to extend and retract, the function of moving the entire device closer to or away from the tank to be welded can be realized. The front half of the fixed component 103, the bearing component 105, and the supporting component 107 are all semi-circular arc structures, so they can approach the cylindrical tank to be welded from the side. The inner end of the motor 104 and the bearing component The inner side of 105 is meshed, and the supporting component 105 is integrally inserted in the fixing component 103, and the arc angle of the supporting component 105 is the same as that of the fixing component 103, so the motor 104 can drive the supporting component 105 to extend and slide outward from the fixing component 103, and the trajectory of the supporting component 105 extending outward is circular, so that the annular weld of the tank body to be welded is located within the movement trajectory of the supporting component 105, and the welding components 106 on both ends of the supporting component 105 are perpendicular to and abut against the weld. As the motor 104 is driven, the supporting component 105 can rotate around the annular weld, and the welding component 106 will weld the annular weld while rotating.

[0032] Example 2 Reference Figure 2 to Figure 5 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that it can rotate in a circle around the weld to achieve the welding operation on the annular weld, and in this process, there is no need to additionally move the tank body that has been fixed by the centering clamp, which effectively avoids the occurrence of misalignment and ensures the working effect of the welding operation.

[0033] Compared with Example 1, further, combined with Figure 2The fixing component 103 includes a main fixing frame 103a and a sub-fixing frame 103b which are symmetrically arranged, and both the main fixing frame 103a and the sub-fixing frame 103b are semicircular arc structures, a connecting plate 103c is horizontally arranged at the center position of the outer side of the main fixing frame 103a, and a fixing seat 103d is arranged on one side of the top of the main fixing frame 103a. The sub-fixing frame 103b is also provided with a connecting plate 103c, and the ends of the two sets of connecting plates 103c are fixedly connected.

[0034] Among them, combined Figure 2 The fixing component 103 also includes a first slide groove 103e opened on the inner side of the main fixing frame 103a, a second slide groove 103f opened on the auxiliary fixing frame 103b and opposite to the first slide groove 103e, and a make way groove 103g located between the first slide groove 103e and the second slide groove 103f, and the make way groove 103g separates the main fixing frame 103a from the auxiliary fixing frame 103b in the vertical direction, and both sides of the bearing component 105 extend into the first slide groove 103e and the second slide groove 103f respectively.

[0035] During use, the main fixing frame 103a and the auxiliary fixing frame 103b of the semicircular arc structure can approach the cylindrical tank body to be welded from the side. Since the two sides of the bearing component 105 are located in the second slide groove 103f and the first slide groove 103e, the bearing component 105 is limited by the two from both sides, and the second slide groove 103f and the first slide groove 103e are in an arc structure. At the same time, the arc trajectory of the bearing component 105 matches the second slide groove 103f and the first slide groove 103e. Therefore, the bearing component 105 is concentric with the second slide groove 103f and the first slide groove 103e, and the two ends of the first slide groove 103e and the second slide groove 103f are open. Therefore, when the bearing component 105 rotates with the common center of the three as the axis, it can freely telescope and slide in the fixing component 103.

[0036] Among them, the motor 104 is fixed on the fixed seat 103d, and a gear 104a is provided on one side of the motor 104, and the gear 104a is meshed with the inner side of the bearing component 105. The gear 104a can drive the bearing component 105 to rotate with its own arc center as the axis center under the limitation of the main fixed frame 103a and the auxiliary fixed frame 103b on both sides, and then perform telescopic sliding in the circumferential direction between the main fixed frame 103a and the auxiliary fixed frame 103b.

[0037] Among them, combined Figure 5The bearing component 105 includes a sliding frame 105a with an arc structure, and the arc angle of the sliding frame 105a is greater than half a circle. One side of the sliding frame 105a is located in the second sliding groove 103f, and a driving frame 105b is fixedly arranged on the other side of the sliding frame 105a, and a limiting frame 105c is fixedly arranged on one side of the driving frame 105b, and the driving frame 105b and the limiting frame 105c are also arc structures greater than half a circle.

[0038] During use, the sliding frame 105a, the driving frame 105b and the limiting frame 105c are fixedly connected, and the arc angles of the three are the same as the first slide groove 103e and the second slide groove 103f. Therefore, the supporting component 105 as a whole can move on the circular track where the arc of the first slide groove 103e is located, and the supporting component 105 always overlaps on the circular track when moving. At the same time, most of the sliding frame 105a and the entire driving frame 105b are located in the give way groove 103g. Due to the open design of the give way groove 103g, the upper and lower sides of the sliding frame 105a and the driving frame 105b are directly exposed to the outside.

[0039] Further, combined with Figure 5 Two sets of fixing rings 105d are symmetrically arranged on the sliding frame 105a, and the two sets of welding components 106 are correspondingly inserted into the two sets of fixing rings 105d. A connecting shaft 105e is arranged on the inner side of the center of the sliding frame 105a, and teeth 105f meshing with the gear 104a are opened on the inner diameter of the driving frame 105b.

[0040] During use, since the arc range of the bearing component 105 is greater than half a circle, the vertical line between the two ends of the bearing component 105 does not pass through the center of the arc structure of the bearing component 105, and the two sets of fixing rings 105d are respectively arranged at the head end of the sliding frame 105a and at a position symmetrical to the head end about the center of the circle, so the two sets of welding components 106 respectively installed on the two are 180° apart. When the bearing component 105 moves as a whole along the circular trajectory of the first slide groove 103e, the two sets of welding components 106 will move with the bearing component 105, and the arc trajectory lengths of the two sets of welding components 106 when moving are the same. The curvature of the driving frame 105b is greater than half a circle, that is, the driving frame 105b is greater than 180°, and the teeth 105f are only distributed in a range slightly greater than 180° on the inner side of the driving frame 105b, and do not completely occupy the inner side of the driving frame 105b. Therefore, the gear 104a can at most drive the driving frame 105b to rotate slightly greater than 180° through the engagement with the teeth 105f. At the same time, since the overall length of the bearing component 105 is greater than half a circle, even if the gear 104a drives the bearing component 105 to rotate to the extreme position, a part of the driving frame 105b is still located in the fixed component 103 and will not be separated from the fixed component 103.

[0041] Combination Fig.10 When the device is used for annular welding, after the welded parts are clamped and fixed by the clamping device and butted, the device is moved closer to the tank body from the side through the telescopic cylinder 102, so that the two groups of welding parts 106 at both ends of the bearing component 105 are perpendicular to the annular weld and abut against the annular weld. At this time, the center of the bearing component 105 is concentric and coaxial with the annular weld. Then the motor 104 drives the bearing component 105 as a whole to rotate around the annular weld as the axis through the meshing of the gear 104a and the tooth 105f. The rotating bearing component 105 will synchronously drive the two groups of welding parts 106 to perform welding along the annular weld. Since the tooth 105f is not completely covered with the driving frame 105b, the motor 104 can only drive the bearing component 105 to rotate along the annular weld. Component 105 rotates slightly more than 180°. While the supporting component 105 rotates more than 180°, the two groups of welding components 106 have also moved more than 180° on the outside of the annular weld. By superimposing the movement trajectories of the two groups of welding components 106, it is possible to obtain a welding route that exceeds the circumference of the annular weld. Therefore, the two groups of welding components 106 have realized the annular welding operation on the annular weld. In this process, the two groups of welding components 106 only need to be driven by the supporting component 105 to rotate in a circle around the weld to realize the welding operation on the annular weld. There is no need to additionally move the tank body that has been fixed by the centering clamp, which effectively avoids the occurrence of misalignment and ensures the working effect of the welding operation.

[0042] The remaining structures are the same as those of Example 1.

[0043] Example 3 Reference Figure 6 to Figure 11 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that it can adjust the welding range accordingly according to the diameter of the tank body to be welded, can meet more usage requirements, and further enhance the flexibility of the device.

[0044] Compared with Example 2, further, combined with Figure 6 The welding component 106 includes a limiting rod 106a vertically inserted into the fixing ring 105d, a welding assembly 106b arranged at the end of the limiting rod 106a, a connecting seat 106c located between the limiting rod 106a and the welding assembly 106b, and a connecting port 106d laterally opened in the connecting seat 106c, and the supporting component 107 passes through the connecting port 106d. The limiting rod 106a is limited in the vertical direction by the fixing ring 105d and can only slide up and down in the vertical direction. The welding assembly 106b is the main equipment for welding, including but not limited to a welding head and a flux spray pot.

[0045] Among them, combined Figure 7The supporting component 107 includes two groups of arc-shaped supporting rods 107a, and the ends of the two groups of supporting rods 107a close to each other are rotatably connected to the connecting shaft 105e, and arc grooves 107b are opened on the left and right sides of each group of supporting rods 107a, and rectangular grooves 107c are opened on the front and back sides of each group of supporting rods 107a, and the adjusting component 108 passes through the rectangular groove 107c in the vertical direction.

[0046] During use, the support rod 107a is a quarter-circle arc structure, and the two groups of support rods 107a are symmetrically attached to the inner side of the sliding frame 105a. The two groups of support rods 107a can be combined into a semicircular arc structure, and the support rod 107a can rotate around the connecting shaft 105e as the axis.

[0047] Among them, combined Figure 8 The adjusting component 108 includes an adjusting shaft 108a vertically arranged between the two groups of support rods 107a, two groups of threaded shafts 108b symmetrically arranged at both ends of the adjusting shaft 108a, and the threaded shaft 108b vertically passes through the rectangular groove 107c and extends into the sliding frame 105a, and a limiting ball 108c is arranged at the top of each group of threaded shafts 108b, and the diameter of the limiting ball 108c is larger than the diameter of the threaded shaft 108b. The position of the adjusting component 108 is not located in the middle of the two groups of support rods 107a, but close to one end connected to the two groups of support rods 107a. The limiting ball 108c limits the threaded shaft 108b on the sliding frame 105a, so that the adjusting component 108 cannot be separated from the connecting shaft 105e, and can only perform a circular rotation on the connecting shaft 105e without changing its position.

[0048] Further, combined with Figure 8 The adjusting component 108 also includes a sleeve 108d threadedly connected to each set of threaded shafts 108b, and an extension shaft 108e laterally arranged on both sides of the sleeve 108d, and the extension shaft 108e extends outward into the arc groove 107b.

[0049] Use process, combined Fig. 9 The extension shaft 108e extends into the arc groove 107b, so the two are limited to each other, and the sleeve 108d is pushed by the thread of the threaded shaft 108b and can move up and down in the vertical direction along the threaded shaft 108b. Therefore, the moving threaded shaft 108b can move along the arc groove 107b through the extension shafts 108e on both sides. Since the arc groove 107b is not a rectangular structure in the vertical direction, the support rod 107a will also move following the push of the extension shaft 108e.

[0050] When the device needs to perform circular welding operations on tanks of different diameters, Fig.11, rotate the adjusting component 108, the adjusting component 108 drives the corresponding extension shaft 108e to move through the threaded shafts 108b on both sides, the moving extension shaft 108e will push the support rod 107a to move, and the support rod 107a will rotate with the connecting shaft 105e as the axis. Since one end of the rotating support rod 107a is inserted into the connecting port 106d, the support rod 107a will drive the welding component 106 to move synchronously as a whole, and since the limiting rod 106a is limited by the fixing ring 105d, the rotating support rod 107a will press the welding component 106 downward as a whole through the connecting seat 106c, and the moving direction of the welding component 106 is always kept vertically downward, and the two groups of support components 107 push the two groups The welding parts 106 move synchronously and approach the annular weld from the upper and lower sides at the same time. Finally, the welding components 106b on the two groups of welding parts 106 will abut against the upper and lower ends of the annular weld. Then, the operations in Example 2 are repeated to perform annular welding on the annular weld. In summary, the distance between the two groups of welding parts 106 can be adjusted by driving the two groups of supporting parts 107 through the adjustment part 108. The distance between the two groups of welding parts 106 is the diameter of the annular welding route of the equipment. By adjusting the distance between the two groups of welding parts 106, the diameter of the annular welding route of the equipment is adjusted, thereby achieving the purpose of following the diameter of the tank body to be welded and adjusting the welding range, thereby meeting more usage requirements and further enhancing the flexibility of use of the device.

[0051] The remaining structure is the same as that of Example 2.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A circular welding system for a pressure vessel, characterized in that: include, The welding unit (100) comprises a base (101) for fixing, a telescopic cylinder (102) arranged on the side of the base (101), a fixing component (103) on the same side as the telescopic cylinder (102), a motor (104) arranged at one end of the fixing component (103), a bearing component (105) inserted into the fixing component (103), two groups of welding components (106) symmetrically arranged at both ends of the bearing component (105), and the two groups of welding components (106) are located on the same vertical line, a supporting component (107) arranged inside the bearing component (105), and an adjusting component (108) arranged inside the bearing component (105) in a vertical direction, and both ends of the adjusting component (108) pass through the supporting component (107) and extend into the bearing component (105).

2. The annular welding system for a pressure vessel according to claim 1, characterized in that: The fixing component (103) comprises a main fixing frame (103a) and a secondary fixing frame (103b) which are symmetrically arranged, and the main fixing frame (103a) and the secondary fixing frame (103b) are both semicircular arc structures, a connecting plate (103c) arranged transversely at the center position of the outer side of the main fixing frame (103a), and a fixing seat (103d) arranged on one side of the top end of the main fixing frame (103a), and the secondary fixing frame (103b) is also provided with a connecting plate (103c), and the ends of the two groups of connecting plates (103c) are fixedly connected.

3. The annular welding system for a pressure vessel according to claim 2, characterized in that: The fixing component (103) further comprises a first slide groove (103e) provided on the inner side of the main fixing frame (103a), a second slide groove (103f) provided on the auxiliary fixing frame (103b) and opposite to the first slide groove (103e), and a clearance groove (103g) located between the first slide groove (103e) and the second slide groove (103f), wherein the clearance groove (103g) separates the main fixing frame (103a) and the auxiliary fixing frame (103b) in a vertical direction, and two sides of the bearing component (105) extend into the first slide groove (103e) and the second slide groove (103f) respectively.

4. The annular welding system for a pressure vessel according to claim 1, characterized in that: The motor (104) is fixedly arranged on the fixing seat (103d); a gear (104a) is arranged on one side of the motor (104), and the gear (104a) is meshed with the inner side of the bearing component (105).

5. The circular welding system for a pressure vessel according to claim 1, characterized in that: The bearing component (105) comprises a sliding frame (105a) of an arc-shaped structure, wherein the arc angle of the sliding frame (105a) is greater than half a circle, one side of the sliding frame (105a) is located in the second sliding groove (103f), a driving frame (105b) is fixedly arranged on the other side of the sliding frame (105a), and a limiting frame (105c) is fixedly arranged on one side of the driving frame (105b), and the driving frame (105b) and the limiting frame (105c) are also arc-shaped structures greater than half a circle.

6. The circular welding system for a pressure vessel according to claim 5, characterized in that: Two groups of fixing rings (105d) are symmetrically arranged on the sliding frame (105a), and the two groups of welding components (106) are correspondingly inserted into the two groups of fixing rings (105d). A connecting shaft (105e) is arranged on the inner side of the center of the sliding frame (105a), and teeth (105f) that mesh with the gear (104a) are opened on the inner diameter of the driving frame (105b).

7. The circular welding system for a pressure vessel according to claim 1, characterized in that: The welding component (106) comprises a limiting rod (106a) vertically inserted into a fixing ring (105d), a welding assembly (106b) arranged at the end of the limiting rod (106a), a connecting seat (106c) located between the limiting rod (106a) and the welding assembly (106b), and a connecting port (106d) transversely opened in the connecting seat (106c), and the supporting component (107) passes through the connecting port (106d).

8. The circular welding system for a pressure vessel according to claim 1, characterized in that: The support component (107) comprises two groups of arc-shaped support rods (107a), and the ends of the two groups of support rods (107a) close to each other are rotatably connected to the connecting shaft (105e), arc-shaped grooves (107b) are provided on the left and right sides of each group of support rods (107a), and rectangular grooves (107c) are provided on the front and rear sides of each group of support rods (107a), and the adjustment component (108) passes through the rectangular groove (107c) in the vertical direction.

9. The circular welding system for a pressure vessel according to claim 8, characterized in that: The adjusting component (108) comprises an adjusting shaft (108a) vertically arranged between two groups of support rods (107a), two groups of threaded shafts (108b) symmetrically arranged at both ends of the adjusting shaft (108a), wherein the threaded shafts (108b) vertically pass through the rectangular grooves (107c) and extend into the sliding frame (105a), and a limiting ball (108c) arranged at the top end of each group of threaded shafts (108b), wherein the diameter of the limiting ball (108c) is greater than the diameter of the threaded shaft (108b).

10. The circular welding system for a pressure vessel according to claim 9, characterized in that: The adjusting component (108) further comprises a shaft sleeve (108d) threadedly connected to each set of threaded shafts (108b), and an extension shaft (108e) transversely arranged on both sides of the shaft sleeve (108d), wherein the extension shaft (108e) extends outwards into the arc-shaped groove (107b).

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