Welding system for stainless steel storage box

Abstract

The utility model provides a welding system for a stainless steel storage tank. The inner supporting component comprises an inner supporting base, an inner supporting stand column and an inner supporting wheel. The inner supporting base is used for supporting the inner supporting stand column. The inner supporting wheel is arranged on the side face of the inner supporting stand column, and the inner supporting wheel can rotate relative to the inner supporting stand column in the horizontal plane. The inner supporting component is used for being placed in the storage box short cylinder so as to be attached to a short cylinder butt joint circular seam. The inner supporting stand column is arranged in a rotatable mode relative to the inner supporting base so as to drive the inner supporting wheel to move along the short cylinder butt joint circular seam and support the short cylinder butt joint circular seam. The welding system can adapt to stainless steel short cylinder supports of different sizes.

Description

Technical Field

[0001] The utility model relates to the field of launch vehicle tank tooling, in particular to a welding system for a stainless steel tank. Background Art

[0002] Stainless steel has the characteristics of high strength, corrosion resistance, and high temperature resistance. A large amount of stainless steel is used in the Starship rocket, which not only reduces the overall manufacturing cost of the rocket, but also enables the rocket to withstand the huge high temperature during launch. In addition, the processing of stainless steel is relatively simple and the technical difficulty is relatively low. The rocket tank is an important component for storing propellant. It is large in size and is usually welded by annular seams of multiple short tubes, short tubes and heads. When welding the butt annular seams between short tubes and short tubes, and short tubes and heads, it is usually necessary to support them from the inside to ensure the welding shape and welding accuracy.

[0003] In order to adapt to the welding supports of stainless steel rocket tanks of different sizes, it is particularly important to design a welding system for stainless steel tanks. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a welding system for a stainless steel storage tank.

[0005] The utility model provides a welding system for a stainless steel storage tank, comprising: an inner support component; the inner support component comprises an inner support base, an inner support column and an inner support wheel, the inner support base is used to support the inner support column; the inner support wheel is arranged on the side of the inner support column, and the inner support wheel is rotatable relative to the inner support column in a horizontal plane; the inner support component is used to be placed inside a short cylinder of the storage tank to fit the short cylinder butt joint annular seam; the inner support column is rotatable relative to the inner support base to drive the inner support wheel to move along the short cylinder butt joint annular seam to support the short cylinder butt joint annular seam.

[0006] According to one embodiment of the utility model, a transverse pillar is arranged on the side surface of the inner support column along the radial direction of the inner support base; the inner support wheel is connected to the transverse pillar through an inner support support rod, and the inner support wheel is rotatable relative to the inner support support rod; the inner support support rod is movably arranged relative to the transverse pillar along the radial direction of the inner support base to drive the inner support wheel toward or away from the short tube docking ring seam.

[0007] According to an embodiment of the utility model, two symmetrical transverse pillars are arranged on the side of the inner support column along its height direction; an inner support rod is arranged on each of the two side surfaces of the inner support wheel, and the other side of each inner support rod is arranged corresponding to one transverse pillar.

[0008] According to an embodiment of the utility model, a rotation shaft is arranged between the two inner support rods, and the inner support wheel is rotatably arranged relative to the rotation shaft.

[0009] According to an embodiment of the utility model, it also includes an external pressure component; the external pressure component is used to be placed outside the short cylinder of the storage tank, cooperate with the internal support component, and press the short cylinder butt joint annular seam from the outside of the short cylinder of the storage tank.

[0010] According to one embodiment of the utility model, the external pressure component includes an external pressure column and an external pressure base; the external pressure base is used to support the external pressure column; an external pressure wheel is arranged on the side of the external pressure column; the external pressure wheel is rotatable relative to the external pressure column; the external pressure base is rotatable along the circumferential direction of the internal support base to drive the external pressure wheel to move along the short tube butt joint annular seam to tighten the short tube butt joint annular seam.

[0011] According to an embodiment of the utility model, the external pressure column is provided with two symmetrical external pressure wheels along its height direction to perform compression on both sides of the short tube butt annular seam.

[0012] According to one embodiment of the utility model, the external pressure component also includes an external pressure guide rail and an external pressure sliding rail; the external pressure sliding rail is arranged along the circumferential direction of the internal support base, and the external pressure base is movably arranged relative to the external pressure sliding rail; the external pressure guide rail is arranged on the radial outer side of the external pressure sliding rail; two guide wheels are arranged on the lower side of the external pressure base, and the two guide wheels are respectively arranged on both sides of the external pressure guide rail, and the guide wheels are movably arranged relative to the external pressure guide rail to radially limit the external pressure base.

[0013] According to one embodiment of the utility model, the internal support component also includes an internal support motor and an internal support driving gear, the internal support motor is fixedly connected to the internal support driving gear; the internal support driving gear is rotatably arranged on the internal support base; the internal support driving gear is meshed with the side of the internal support column; when the internal support motor is started, the internal support driving gear is driven to drive the internal support column to rotate relative to the internal support base; an external pressure motor and an external pressure driving gear are arranged on the lower side of the external pressure base, and the external pressure motor is fixedly connected to the external pressure driving gear; the external pressure driving gear is meshed with the external pressure sliding track; when the external pressure motor is started, the external pressure driving gear is driven to drive the external pressure base to move along the external pressure sliding track; the internal support motor and the external pressure motor are set with a synchronous operation program to make the inner support wheel and the external pressure wheel move synchronously along the short cylinder docking annular seam.

[0014] According to an embodiment of the utility model, a welding component is further provided on the side of the external pressure column, and the welding component includes a welding head; the welding head is provided between the two external pressure wheels to weld the short tube butt annular seam.

[0015] According to the welding system for a stainless steel storage tank of the utility model, the rotatable inner support wheel can adapt to stainless steel short cylinder supports of different sizes, thereby improving the versatility of the welding system.

[0016] It should be understood that the above general description and the following specific embodiments are only exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are a part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The attached drawings and the description of the specification are used to explain the principle of the utility model.

[0018] Figure 1 It is a three-dimensional diagram of a welding system for a stainless steel storage tank according to one embodiment of the utility model;

[0019] Figure 2 yes Figure 1 A magnified view of middle;

[0020] Figure 3 It is a three-dimensional diagram of a welding system for a stainless steel storage tank according to one embodiment of the utility model;

[0021] Figure 4 yes Figure 3 Enlarged view of middle B;

[0022] Figure 5 It is a bottom view of an external pressure base of an embodiment of the utility model;

[0023] Figure 6 It is a three-dimensional diagram of an inner support component of an embodiment of the utility model;

[0024] Figure 7 It is a three-dimensional diagram of a welding component of an embodiment of the utility model;

[0025] Figure 8 It is a three-dimensional diagram of a welding component of an embodiment of the utility model;

[0026] Fig. 9 It is a three-dimensional diagram of an external pressure component of an embodiment of the utility model;

[0027] Fig.10 yes Fig. 9 Enlarged view of middle C;

[0028] Fig.11It is a three-dimensional diagram of a welding component of an embodiment of the utility model;

[0029] Fig.12 It is a stereoscopic diagram of a rolling wheel according to an embodiment of the utility model.

[0030] Description of reference numerals:

[0031] 1 Internal support component; 2 External pressure component; 3 Welding component; 1.1 Internal support base; 1.2 Internal support column; 1.3 Internal support wheel; 1.4 lateral support; 1.5 Internal support rod; 1.6 Rotating shaft; 1.7 Internal support driving gear; 2.1 External pressure column; 2.2 External pressure base; 2.3 External pressure wheel; 2.4 External pressure guide track; 2.5 External pressure sliding track; 2.6 Guide wheel; 2.7 External pressure driving gear; 2.8 External pressure rod; 2.1.1 First external pressure column; 2.1.2 Second external pressure column; 3.1 Welding head; 3.2 Welding slide bar; 3.3 Z-axis slider; 3.4 X-axis slider; 3.5 Y-axis slider; 3.6 Rolling wheel. DETAILED DESCRIPTION

[0032] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are used to illustrate the principles of the present invention, and are not configured to limit the present invention. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the sizes of some structural components or areas in the drawings may be enlarged for other structural components or areas to help understand the embodiments of the present invention.

[0033] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the utility model. In the description of the utility model, it should be noted that, unless otherwise specified, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In addition, the terms "include", "comprise", "have" or any other variations thereof are intended to cover non-exclusive inclusion, so that a structure or component including a series of elements includes not only those elements, but also other mechanical elements that are not explicitly listed or inherent in the structure or component. In the absence of more restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the article or device including the elements.

[0035] Spatially related terms such as "below", "beneath", "under", "low", "above", "on", "high", etc. are used to facilitate description to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "one element is above / below another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and do not specifically refer to the meaning of order or sequence, and should not be regarded as limiting. Similar terms are used throughout the description to represent similar elements.

[0036] In the process of describing the present utility model below, in certain scene descriptions, only "rocket", "launch vehicle", "spacecraft", "space launch vehicle" or "missile" may be used. This is only for the convenience of description, and its connotation is not limited to the specific words used. Generally, the launch vehicle of the present utility model includes not only space launch vehicles or rockets used to carry satellites or spacecraft or other probes, but also various types of missiles, rockets and other weapons used to carry military payloads, as well as similar products that can send payloads into the air. When interpreting the above specific words, those skilled in the art shall not limit the launch vehicle to only one of the rocket or missile based on the specific words used to describe the scene, thereby narrowing the scope of protection of the present utility model.

[0037] For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention.

[0038] Figure 1 It is a three-dimensional diagram of a welding system for a stainless steel storage tank according to one embodiment of the utility model; Figure 2 yes Figure 1 A magnified view of middle; Figure 3 It is a three-dimensional diagram of a welding system for a stainless steel storage tank according to one embodiment of the utility model; Figure 4 yes Figure 3 Enlarged view of middle B; Figure 5 It is a bottom view of an external pressure base of an embodiment of the utility model; Figure 6 It is a three-dimensional diagram of an inner support component of an embodiment of the utility model; Figure 7 It is a three-dimensional diagram of a welding component of an embodiment of the utility model; Figure 8 It is a three-dimensional diagram of a welding component of an embodiment of the utility model; Fig. 9 It is a three-dimensional diagram of an external pressure component of an embodiment of the utility model; Fig.10 yes Fig. 9 Enlarged view of middle C; Fig.11 It is a three-dimensional diagram of a welding component of an embodiment of the utility model; Fig.12 It is a stereoscopic diagram of a rolling wheel according to an embodiment of the utility model.

[0039] like Figure 1 As shown, the utility model provides a welding system for a stainless steel storage tank, comprising: an inner support component 1. The inner support component 1 comprises an inner support base 1.1, an inner support column 1.2 and an inner support wheel 1.3, wherein the inner support base 1.1 is used to support the inner support column 1.2. The inner support wheel 1.3 is arranged on the side of the inner support column 1.2, and the inner support wheel 1.3 is rotatable relative to the inner support column 1.2 in a horizontal plane. The inner support component 1 is used to be placed inside the short cylinder of the storage tank to fit the short cylinder butt joint annular seam. The inner support column 1.2 is rotatable relative to the inner support base 1.1 to drive the inner support wheel 1.3 to move along the short cylinder butt joint annular seam to support the short cylinder butt joint annular seam.

[0040] The welding system of this embodiment can adapt to stainless steel short cylinder supports of different sizes through the rotatable inner support wheel 1.3, thereby improving the versatility of the welding system.

[0041] like Figure 2 As shown, according to one embodiment of the utility model, a transverse support 1.4 is arranged on the side of the inner support column 1.2 along the radial direction of the inner support base 1.1. The inner support wheel 1.3 is connected to the transverse support 1.4 through the inner support rod 1.5, and the inner support wheel 1.3 is rotatable relative to the inner support rod 1.5. The inner support rod 1.5 is movably arranged relative to the transverse support 1.4 along the radial direction of the inner support base 1.1 to drive the inner support wheel 1.3 toward or away from the short tube docking annular seam.

[0042] The welding system provided in this embodiment can control the extension degree of the inner support wheel 1.3 according to the size of the short tube by movably setting the inner support rod 1.5 relative to the transverse support rod 1.4. For example, the transverse support rod 1.4 is provided with a linear guide rail, and the inner support rod 1.5 and the slider of the linear guide rail are fixedly arranged to drive the inner support rod 1.5 to move relative to the transverse support rod 1.4, so that the inner support wheel 1.3 is moved toward or away from the short tube butt joint annular seam.

[0043] According to one embodiment of the utility model, the inner support wheel 1.3 is provided with a pressure sensor for measuring the pressure applied by the inner support wheel 1.3 to the inner side of the short tube to control the deformation degree of the short tube butt joint annular seam, thereby controlling the shape accuracy of the short tube.

[0044] As shown in Fig. 2, according to an embodiment of the utility model, two symmetrical transverse pillars 1.4 are arranged on the side of the inner support column 1.2 along its height direction. An inner support rod 1.5 is arranged on each side of the inner support wheel 1.3, and the other side of each inner support rod 1.5 is arranged corresponding to a transverse pillar 1.4.

[0045] The welding system provided in this embodiment can ensure the overall rigidity of the system by providing two corresponding transverse struts 1.4 and inner support rods 1.5.

[0046] As shown in FIG. 2 , according to an embodiment of the present invention, a rotation shaft 1.6 is disposed between two inner support rods 1.5, and the inner support wheel 1.3 is rotatably disposed relative to the rotation shaft 1.6.

[0047] In this embodiment, for example, the two ends of the rotating shaft 1.6 are respectively connected to the opposite sides of the two inner support rods 1.5, and the inner support wheel 1.3 is sleeved on the circumferential outer side of the rotating shaft 1.6 and is rotatable relative to the rotating shaft 1.6 to roll along the circumferential direction of the short tube docking annular seam.

[0048] like Figure 1 As shown, according to one embodiment of the utility model, in addition to the inner support component 1, the welding system also includes an external pressure component 2. The external pressure component 2 is used to be placed outside the tank short barrel, cooperate with the inner support component 1, and press the short barrel butt annular seam from the outside of the tank short barrel.

[0049] In this embodiment, the external pressure component 2 presses the short cylinder of the tank from the outer side surface of the short cylinder of the tank until it fits into the circumferential outer side surface of the inner support wheel 1.3 to weld the annular seam of the short cylinder to improve the welding accuracy of the welding system and the reliability of the rocket tank.

[0050] like Figure 3 and 4 As shown, according to one embodiment of the utility model, the external pressure component 2 includes an external pressure column 2.1 and an external pressure base 2.2. The external pressure base 2.2 is used to support the external pressure column 2.1. An external pressure wheel 2.3 is arranged on the side of the external pressure column 2.1. The external pressure wheel 2.3 is rotatable relative to the external pressure column 2.1. The external pressure base 2.2 is rotatable along the circumferential direction of the inner support base 1.1 to drive the external pressure wheel 2.3 to move along the short cylinder butt joint annular seam to press the short cylinder butt joint annular seam.

[0051] In this embodiment, the outer pressure wheel 2.3 is rotatably arranged relative to the outer pressure column 2.1 in a horizontal plane, so as to move along the circumferential direction of the short tube butt joint annular seam to press the entire short tube butt joint annular seam.

[0052] like Figure 4As shown, according to an embodiment of the present utility model, the external pressure column 2.1 is provided with two symmetrical external pressure wheels 2.3 along its height direction to press on both sides of the short tube butt annular seam.

[0053] In this embodiment, for example, two short cylinders are butt-jointed, and two outer pressure wheels 2.3 are respectively arranged corresponding to one of the short cylinders to press the butt-jointed annular seam of the short cylinders to the circumferential outer side surface of the inner support wheel 1.3.

[0054] like Figure 5 As shown, according to one embodiment of the utility model, in addition to the external pressure column 2.1 and the external pressure base 2.2, the external pressure component 2 also includes an external pressure guide track 2.4 and an external pressure sliding track 2.5. The external pressure sliding track 2.5 is arranged along the circumferential direction of the inner support base 1.1, and the external pressure base 2.2 is movably arranged relative to the external pressure sliding track 2.5. The external pressure guide track 2.4 is arranged on the radial outside of the external pressure sliding track 2.5. Two guide wheels 2.6 are arranged on the lower side of the external pressure base 2.2, and the two guide wheels 2.6 are respectively arranged on both sides of the external pressure guide track 2.4, and the guide wheels 2.6 are movably arranged relative to the external pressure guide track 2.4 to radially limit the external pressure base 2.2.

[0055] In this embodiment, the external pressure base 2.2 is movably arranged relative to the external pressure sliding track 2.5, and can drive the external pressure wheel 2.3 to move along the circumferential direction of the tank short cylinder butt joint annular seam to press the entire tank short cylinder butt joint annular seam.

[0056] like Figure 5 and 6 As shown, according to an embodiment of the utility model, in addition to the inner support base 1.1, the inner support column 1.2 and the inner support wheel 1.3, the inner support component 1 also includes an inner support motor and an inner support driving gear 1.7, and the inner support motor is fixedly connected to the inner support driving gear 1.7. The inner support driving gear 1.7 is rotatably arranged on the inner support base 1.1. The inner support driving gear 1.7 is meshed with the side of the inner support column 1.2. When the inner support motor is started, the inner support driving gear 1.7 is driven to drive the inner support column 1.2 to rotate relative to the inner support base 1.1. The external pressure motor and the external pressure driving gear 2.7 are arranged on the lower side of the external pressure base 2.2, and the external pressure motor is fixedly connected to the external pressure driving gear 2.7. The external pressure driving gear 2.7 is meshed with the external pressure sliding track 2.5. When the external pressure motor is started, the external pressure driving gear 2.7 is driven to drive the external pressure base 2.2 to move along the external pressure sliding track 2.5. The inner support motor and the outer pressure motor are set with a synchronous operation program so that the inner support wheel 1.3 and the outer pressure wheel 2.3 move synchronously along the short tube butt joint annular seam.

[0057] In this embodiment, the inner support motor and the outer pressure motor are set to run synchronously, so that the inner support wheel 1.3 and the outer pressure wheel 2.3 move synchronously along the short barrel butt joint annular seam, so that the inner support wheel 1.3 and the outer pressure wheel 2.3 can always cooperate to press the short barrel butt joint annular seam to weld the short barrel butt joint annular seam. For example, the inner support motor and the outer pressure motor can be stepper motors. For example, the welding system makes the movement angle of the inner support wheel 1.3 and the outer pressure wheel 2.3 relative to the circumferential direction of the short barrel butt joint annular seam always the same, so that the inner support wheel 1.3 and the outer pressure wheel 2.3 can always keep in cooperation.

[0058] like Figure 7 and 8 As shown, according to an embodiment of the present invention, a welding component 3 is further provided on the side of the external pressure column 2.1, and the welding component 3 includes a welding head 3.1. The welding head 3.1 is provided between the two external pressure wheels 2.3 to weld the short barrel butt annular seam.

[0059] In this embodiment, the external pressure column 2.1 can drive the welding head 3.1 and the external pressure wheel 2.3 to move synchronously along the circumferential direction of the short tube butt joint annular seam, so as to weld the entire butt joint annular seam.

[0060] like Fig. 9 and 10 As shown, according to an embodiment of the utility model, along the circumferential direction of the external pressure sliding track 2.5, the external pressure base 2.2 is provided with a first external pressure column 2.1.1 and a second external pressure column 2.1.2. An external pressure support rod 2.8 is provided between the first external pressure column 2.1.1 and the second external pressure column 2.1.2. An external pressure wheel 2.3 and a welding component 3 are provided on the side of the external pressure support rod 2.8. The external pressure support rod 2.8 is movably provided along the height direction of the external pressure column 2.1, driving the welding component 3 to move up and down to adapt to the height of the short cylinder butt joint annular seam.

[0061] The welding system provided in this embodiment can adjust the height of the external pressure support rod 2.8 through the height of the short tube butt joint annular seam to adapt to the height of different short tube butt joint annular seams.

[0062] According to an embodiment of the utility model, the first external pressure column 2.1.1 and the second external pressure column 2.1.2 are provided with vertical tracks along their height direction on the opposite sides, and the two end surfaces of the external pressure support rod 2.8 are provided with grooves adapted to the vertical tracks. The external pressure support rod 2.8 is movable relative to the vertical track through the grooves to adjust its height.

[0063] Furthermore, toothed tracks are provided on the opposite sides of the first external pressure column 2.1.1 and the second external pressure column 2.1.2 along their height direction, and the toothed tracks are placed on the outer side of the external pressure support rod 2.8. A rotatable height adjustment gear is provided on the side of the external pressure support rod 2.8 opposite to the toothed track, and the height adjustment gear is meshed with the toothed track. The height adjustment gear is connected to the height adjustment motor, and the height adjustment motor is started to drive the height adjustment gear to move along the toothed track to adjust the height of the external pressure support rod 2.8.

[0064] According to an embodiment of the utility model, a welding slide bar 3.2 is arranged on the outer side of the external pressure support rod 2.8. The welding head 3.1 is arranged on a Z-axis slide bar 3.3, and the Z-axis slide bar 3.3 is movable relative to the welding slide bar 3.2 along the height direction of the welding slide bar 3.2 to fine-tune the height of the welding head 3.1.

[0065] like Fig.11 As shown, according to one embodiment of the utility model, the welding head 3.1 is arranged on the X-axis slider 3.4. The X-axis slider 3.4 is arranged on the Z-axis slider 3.3, and the X-axis slider 3.4 is movable relative to the Z-axis slider along the radial direction of the external pressure sliding track 2.5 to drive the welding head 3.1 to approach or move away from the short barrel butt joint annular seam.

[0066] According to an embodiment of the utility model, the welding head 3.1 is arranged on the Y-axis slider 3.5. The Y-axis slider 3.5 is arranged on the X-axis slider 3.4, and the Y-axis slider 3.5 is movable relative to the X-axis slider 3.4 along the circumferential direction of the external pressure sliding track 2.5 to fine-tune the position of the welding head 3.1 along the circumferential direction of the short-tube butt annular seam.

[0067] like Fig.12 As shown, according to an embodiment of the present invention, a rolling wheel 3.6 is respectively provided on both sides of the welding head 3.1 in the horizontal direction of the welding slide bar 3.2.

[0068] In this embodiment, when the welding head 3.1 welds the short barrel butt joint annular seam along its circumferential direction, the rolling wheel in front of the welding head 3.1 in the traveling direction of the welding head 3.1 is used to roll the short barrel butt joint annular seam to be welded flatter, thereby improving the welding accuracy and the shape accuracy of the tank. The rolling wheel behind the welding head 3.1 is used to roll the welded short barrel butt joint annular seam flatter, thereby further improving the welding accuracy and the shape accuracy of the tank.

[0069] The above-mentioned embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0070] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding system for a stainless steel tank, characterized in that: include: Inner support component; the inner support component includes an inner support base, an inner support column and an inner support wheel, the inner support base is used to support the inner support column; the inner support wheel is arranged on the side of the inner support column, and the inner support wheel is rotatable relative to the inner support column in a horizontal plane; the inner support component is used to be placed inside the short cylinder of the storage tank to fit the short cylinder docking ring seam; the inner support column is rotatable relative to the inner support base to drive the inner support wheel to move along the short cylinder docking ring seam to support the short cylinder docking ring seam.

2. The welding system according to claim 1, characterized in that A transverse support is arranged on the side surface of the inner support column along the radial direction of the inner support base; the inner support wheel is connected to the transverse support through an inner support support rod, and the inner support wheel is rotatable relative to the inner support support rod; the inner support support rod is movably arranged relative to the transverse support along the radial direction of the inner support base to drive the inner support wheel toward or away from the short tube docking ring seam.

3. The welding system according to claim 2, characterized in that: Two symmetrical transverse pillars are arranged on the side of the inner support column along its height direction; one inner support rod is arranged on each of the two side surfaces of the inner support wheel, and the other side of each inner support rod is arranged corresponding to one transverse pillar.

4. The welding system according to claim 3, characterized in that A rotating shaft is arranged between the two inner supporting rods, and the inner supporting wheel is rotatably arranged relative to the rotating shaft.

5. The welding system according to claim 1, characterized in that: It also includes an external pressure component; the external pressure component is used to be placed outside the short cylinder of the storage tank, cooperate with the internal support component, and press the short cylinder butt joint annular seam from the outside of the short cylinder of the storage tank.

6. The welding system according to claim 5, characterized in that The external pressure component includes an external pressure column and an external pressure base; the external pressure base is used to support the external pressure column; an external pressure wheel is arranged on the side of the external pressure column; the external pressure wheel is rotatable relative to the external pressure column; the external pressure base is rotatable along the circumferential direction of the internal support base to drive the external pressure wheel to move along the short tube butt joint annular seam to tighten the short tube butt joint annular seam.

7. The welding system according to claim 6, characterized in that The external pressure column is provided with two symmetrical external pressure wheels along its height direction so as to press on both sides of the short tube butt annular seam.

8. The welding system according to claim 6, characterized in that The external pressure component also includes an external pressure guide track and an external pressure sliding track; the external pressure sliding track is arranged along the circumferential direction of the internal support base, and the external pressure base is movably arranged relative to the external pressure sliding track; the external pressure guide track is arranged on the radial outside of the external pressure sliding track; two guide wheels are arranged on the lower side of the external pressure base, and the two guide wheels are respectively arranged on both sides of the external pressure guide track, and the guide wheels are movably arranged relative to the external pressure guide track to radially limit the external pressure base.

9. The welding system according to claim 8, characterized in that The inner support component further comprises an inner support motor and an inner support driving gear, wherein the inner support motor is fixedly connected to the inner support driving gear; the inner support driving gear is rotatably disposed on the inner support base; The inner support driving gear is meshed with the side surface of the inner support column; the inner support motor is started to drive the inner support driving gear to drive the inner support column to rotate relative to the inner support base; An external pressure motor and an external pressure driving gear are arranged on the lower side of the external pressure base, and the external pressure motor is fixedly connected to the external pressure driving gear; the external pressure driving gear is meshed with the external pressure sliding track; when the external pressure motor is started, the external pressure driving gear is driven to drive the external pressure base to move along the external pressure sliding track; The inner support motor and the outer pressure motor are provided with a synchronous operation program so that the inner support wheel and the outer pressure wheel can move synchronously along the short tube butt joint annular seam.

10. The welding system according to claim 7, characterized in that: A welding component is also arranged on the side of the external pressure column, and the welding component comprises a welding head; the welding head is arranged between the two external pressure wheels to weld the short tube butt annular seam.

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