Reusable self-adaptive rounding flange inner support device

Abstract

The utility model provides a reusable self-adaptive rounding flange inner support device, which comprises a central driving piece, a pull rod, a cam turntable and a support block, one end of the pull rod is connected with the central driving piece, the other end of the pull rod is connected with the cam turntable, the cam turntable is connected with the support block, the cam turntable is provided with a shaft point, and the shaft point is connected with the support block in the horizontal direction. The pull rod is located between the connecting point of the cam rotating disc and the supporting block and the shaft point of the cam rotating disc, and the supporting block can move in the direction away from the device or close to the device along with rotation of the cam rotating disc around the shaft point. According to the utility model, at least a third tool in the container manufacturing process can be replaced and omitted, the situation that the third tool cannot be directly taken out due to space interference is avoided, and many problems caused by the third tool are completely eradicated; meanwhile, when individual tools need to be removed in advance, the device can be arranged at any height needing to be supported, and effective supporting is provided for the machining process of related parts.

Description

Technical Field

[0001] The utility model relates to the technical field of welding container manufacturing, and particularly relates to a reusable self-adaptive circular flange internal support device. Background Art

[0002] A storage tank is a sealed pressure vessel used for storing liquids or gases, and is an important infrastructure in the fields of national defense, transportation, petrochemical industry, etc., playing an irreplaceable role in the development of the national economy. As an important part of it, the manufacturing process of the large stainless steel thin-walled cylindrical welded storage tank barrel is difficult. During the welding process of the storage tank barrel, the heat is unevenly distributed, which is prone to obvious local stress concentration, having an important impact on the performance, dimensional accuracy and dimensional stability of the barrel, and reducing the overall quality of the storage tank. Therefore, higher requirements are put forward for the manufacturing process of the large stainless steel thin-walled cylindrical welded storage tank barrel, the operation level of welding personnel, and the anti-deformation measures during the manufacturing process, especially for some stainless steel thin-walled cylindrical welded barrel parts with complex structures. The structure design of the welded storage tank barrel is complex, and the weld space layout is criss-crossed, which easily leads to uneven force on the overall structure and large stress concentration in local areas, ultimately resulting in irreversible welding cumulative deformation, insufficient local machining allowance, and frequent occurrence of product scrapping, causing serious economic losses to the manufacturing enterprise.

[0003] Taking the large stainless steel thin-walled pressure vessel as the storage tank barrel as an example, since it is welded by high-quality stainless steel plates and forgings, the structure of the storage tank barrel is complex and the manufacturing difficulty is large. Therefore, the product manufacturing cost is relatively high, reaching up to millions of yuan, and the finished product qualification rate has a great impact on the manufacturing cost.

[0004] For its manufacturing process, reference can be made to the applicant's early patents CN116511837A and CN116511838A, as shown in the appendix Figure 1-2 As shown, the whole container adopts a welded structure, in which the top flange 1, the segmented flange prefabricated part 8, the cylindrical body 4, and the bottom flange 6 are formed by welding plate materials; the side wall flange 2 (including the first flange 21, the second flange 22, the third flange 23, and the fourth flange 24) and the positioning flange 5 are processed from forging blanks. Finally, after the components are assembled and welded, the whole is machined to the required product size.

[0005] The specific structure of the container is shown in Figure 1As shown, this container product is fabricated by combining stainless steel plates and forgings through welding. During the initial manufacturing process of the product, conventional symmetric welding techniques are mainly employed. In the welding manufacturing process, the deformation of the container is repeatedly measured to guide the correction of deformation, the modification of the process, and the addition of relevant auxiliary tooling to ensure that the quality of the final container product meets the requirements. However, in actual implementation, deformation still occurs from time to time. Controlling deformation during the manufacturing process is time-consuming and laborious, resulting in low manufacturing efficiency. Product repair and scrapping situations often occur, causing economic losses to the enterprise and failing to meet the manufacturing requirements of mass-produced products, seriously restricting the product supply cycle and output value growth. In Figure 1 In the cross-sectional view of Figure 13 as shown, there are high requirements for the dimensional accuracy of the height dimensions H1 and H2 in the figure for the fixed container product to provide accurate positioning for the installation of subsequent parts. At the same time, there are strict positioning requirements for the pitch circle of the threaded holes on the upper plane of the positioning flange 5 and the diameter of the pitch circle of the threaded holes on the upper plane of the segmented flange prefabrication 8. The upper plane of the segmented flange prefabrication 8 (including the flange first-stage body 81 and the flange second-stage body 82, as shown in the appendix

[0006] The cylindrical body 4 of the container is made of 6 - 15 mm thin plates rolled. Four flange holes need to be opened on the side of the cylindrical body at different heights and angles, corresponding to the four sidewall flanges 2 one by one for assembly. If drilling is directly carried out when cutting the cylindrical body plate material, due to the relatively thin overall thickness, large diameter, and high positioning angle requirements of the holes of the cylindrical body 4, leaving a margin at the opening position first for drilling and then rolling the circle will result in situations where the rolled circle of the cylindrical body becomes elliptical and other dimensions cannot be guaranteed. The difficulty of roundness correction after rolling and welding in the later stage will also increase, and it may also cause chatter during the later machining of the flange hole edges. Therefore, the machining of the flange holes on the sidewall of the cylindrical body 4 is a difficult point in container manufacturing.

[0007] In addition, welding the sidewall of the cylindrical body 4 to the first flange 21, the second flange 22, the third flange 23, and the fourth flange 24 is likely to cause depressions at the sidewall flange holes, distortion of the cylindrical body, and deviation of the flange center line from the theoretical design center line. At the same time, during the initial assembly and partial welding of the actual cylindrical body 4 with the top flange 1, the segmented flange prefabrication 8, and the positioning flange 5, although there are other auxiliary support toolings for support, with the gradual removal of the auxiliary support toolings, it is found during the production process that there is still deformation in some local areas, resulting in insufficient subsequent machining allowance and deviation in positioning and installation of the product.

[0008] Specifically, in the early stage of manufacturing this product by the applicant, the main body adopted the method of building blocks with parts to improve the stiffness of the thin-walled areas where welding is prone to deformation and machining is prone to chatter. The specific manufacturing sequence is as shown in the appendix Figure 3-4As shown in the figure, it includes: the positioning flange 5 is pre-assembled with the first tooling 9, the second tooling 10 and the segmented flange prefabricated part 8 as a whole, assembled with the cylindrical body 4, and then assembled with the third tooling 11 after completion, and finally used as the internal support tooling structure of the cylindrical body 4, and the flange holes on the side wall of the cylindrical body 4 are machined. After completion, it is attached according to the Figure 4 As shown in the figure, finally install the top flange 1, the bottom flange 6 and the side wall flange 2.

[0009] As attached Figure 4 As shown in the figure, the welding process of the container product mainly includes: after the overall assembly and inspection of the container are qualified, first spot-weld the bottom flange 6 and the cylindrical body 4; spot-weld the bottom flange 6 and the positioning flange 5; weld the upper edge of the segmented flange prefabricated part 8 and the cylindrical body 4; spot-weld the top flange 1 and the cylindrical body 4; spot-weld the side wall flange 2 and the cylindrical body 4; after completion, weld the bottom surface positions of the bottom flange 6 and the positioning flange 5 to the design requirement state; weld the outer side positions of the bottom flange 6 and the cylindrical body 4 to the design requirement state; weld the inner and outer sides of the top flange 1 and the cylindrical body 4 to the design requirement state; weld the outer side position of the side wall flange 2 and the cylindrical body 4 to the design requirement state;

[0010] After welding is completed on the outside, it is necessary to remove the third tooling 11, weld the weld seam between the segmented flange prefabricated part 8 and the upper edge of the cylindrical body 4 to the design requirement state; at the same time, weld the inner side of the side wall flange 2 and the cylindrical body 4 to the design requirement state; continue to remove the second tooling 10, weld the weld seam between the segmented flange prefabricated part 8 and the lower edge of the cylindrical body 4 to the design requirement state; finally, weld the weld seam between the positioning flange 5 and the upper edge of the cylindrical body 4 to the design requirement state.

[0011] However, according to the applicant's early technology, during the actual mass production process, when removing the third tooling 11, since the outer circle of the upper top plate of the third tooling 11 is larger than the inner circle of the top flange 1, it cannot be directly taken out. It is necessary to cut and damage the top flange of the third tooling 11 by flame before it can be taken out from the inner circle of the top flange 1, which not only seriously affects the production progress, but also destroys the best structural state of the initial tooling design. At the same time, during the cutting process, the inner side of the top plate of the third tooling 11 and the cylindrical body 4 will be burned by the flame at the fitting position, affecting the material properties at this position; later, it is necessary to perform secondary processing on the cut third tooling 11 before welding the top plate and machining the outer circle size again for the production and use of the next product, resulting in an increase in manufacturing cost and cycle;

[0012] In addition, during the welding process of the side wall flange 2 and the inner side of the cylindrical body 4, the applicant found that since the inner support tooling needs to be removed in advance, the inner side cannot be effectively supported, and the welding of the side wall flange 2 will cause serious deformation in the local area of the cylindrical body 4, seriously affecting the appearance quality of the product and the positioning accuracy of the side wall flange 2, resulting in no machining allowance in the later stage, and even causing the product to be scrapped.

[0013] Meanwhile, during the corresponding welding of the inner side of the cylindrical body 4, due to the small internal space of the cylindrical body 4, especially the narrow support space at the welding position and the obstruction of components such as the top flange 1 and the segmented flange 3 on the inner wall of the structure, it brings a lot of inconvenience to the vertical support and horizontal circularity-finding support operations of the welding operator during the welding process, increasing the difficulty of the welding operation and making it difficult to ensure the welding accuracy.

[0014] Therefore, in order to solve the problems existing in the applicant's early technology, this application is specifically proposed. Utility Model Content

[0015] In view of this, the present utility model aims to propose a reusable self-adaptive circularity-finding flange inner support device to solve the problems such as the inevitable tooling damage, influence on material properties, and low production efficiency caused by the use of the third tooling in the prior art, and also to solve the problem that when some tooling needs to be removed in advance, it leads to the inability to provide effective support in the structure, resulting in easy deformation during the processing, large operation difficulty, and being not conducive to improving the processing accuracy.

[0016] To achieve the above object, the technical solution of the present utility model is realized as follows:

[0017] A reusable self-adaptive circularity-finding flange inner support device, the device is used for the production and manufacturing of large thin-walled pressure vessels, the device includes a central driving member, a pull rod, a cam turntable, and a support block, one end of the pull rod is connected to the central driving member, the other end is connected to the cam turntable, the cam turntable is connected to the support block, and the cam turntable has an axis point. In the horizontal direction, the pull rod is located between the connection point of the cam turntable and the support block and the axis point of the cam turntable. With the movement of the central driving member and the pull rod, the cam turntable is driven to rotate around the axis point, so that the support block can move in a direction away from or close to the device.

[0018] Further, the device includes a base plate, the central driving member is arranged on the base plate, the cam turntable is provided with a first hole, a second hole, and a connecting shaft. The cam turntable is fixedly connected to the base plate through the second hole to form the axis point of the cam turntable; the cam turntable is detachably connected to the support block through the first hole, and the cam turntable is connected to the pull rod through the connecting shaft.

[0019] Further, the base plate is a circular plate, the central driving member is arranged at the center of the base plate, and at least two cam turntables are arranged on the outer edge of the base plate in a circumferential array, and each cam turntable is provided with a corresponding support block.

[0020] Further, denote the center of the first hole as f, the axis center of the connecting shaft as g, and the center of the second hole as h. In the vertical projection direction of the cam turntable, the distance between g and h is 1.1 - 1.4 times the distance between f and g, and the distance between f and h is 1.2 - 2 times the distance between f and g.

[0021] Further, the central driving member includes a motor, a speed reducer, a transmission shaft, and a transmission disk connected in sequence, and the transmission disk is connected to the pull rod.

[0022] Further, the support block is provided with a rotating shaft, and the rotating shaft penetrates through the first hole of the cam turntable in a detachable manner, and the support block can rotate relative to the cam turntable along the axis center of the rotating shaft.

[0023] Further, denote the side of the support block facing the inner wall of the cylinder as the support surface, and the curvature of the support surface is the same as that of the inner wall of the cylinder of the large thin-walled pressure vessel; the support surface is provided with an avoidance opening.

[0024] Further, lifting lugs are arranged on the upper surface of the substrate, and the lifting lugs are arranged in a circumferential array along the center of the substrate.

[0025] Further, a digital level is arranged on the upper surface of the substrate.

[0026] Further, the device includes a locking mechanism for mechanically locking the central driving member.

[0027] Compared with the prior art, the reusable self-adaptive circularity-finding flange inner support device of the present utility model has the following advantages:

[0028] A reusable self - adapting circular - finding flange inner support device described in the present utility model, through the movement of the support blocks, enables the device to have a tightened state and an unfolded state, and is used in the production and manufacturing process of containers. The device can enter any height inside the container in the tightened state and be adjusted from the tightened state to the unfolded state, so as to support the cylindrical body and related components near the corresponding height position inside the container. Under the action of this device, compared with the applicant's early technology, when using this device in the production and manufacturing process of containers, it can at least replace and eliminate the third tooling, avoid the situation that the third tooling cannot be directly taken out due to space interference, and completely prevent the inevitable problems caused by the third tooling, such as tooling damage, affecting the material properties of the container, and low production efficiency. At the same time, when individual toolings (such as the first tooling and the second tooling) need to be removed in advance, the device can be set at any height where support is required to support the cylindrical body and related components, providing effective support for the processing process of the related component structure, avoiding deformation of the related components during the processing process, improving the processing accuracy, ensuring the product quality, and at the same time reducing the operation difficulty of construction workers.

[0029] Meanwhile, in the content of the specific implementation manner of this application, five beneficial effects of the device are specifically introduced one by one in combination with specific technical solutions, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0031] Figure 1 FIG. is a schematic structural diagram of a large - scale thin - wall box - type product proposed in the applicant's early scheme;

[0032] Figure 2 FIG. is a cross - sectional view of a large - scale thin - wall box - type product proposed in the applicant's early scheme;

[0033] Figure 3 FIG. is a schematic diagram of the assembly of a container and auxiliary tooling in the applicant's early scheme;

[0034] Figure 4 FIG. is a schematic structural diagram of the complete assembly of a large - scale thin - wall box - type product in the applicant's early scheme through a manufacturing auxiliary device;

[0035] Figure 5 FIG. is a top view of the reusable self - adapting circular - finding flange inner support device described in this application;

[0036] Figure 6Side sectional view of the reusable self - adapting circular - finding flange internal support device described in this application;

[0037] Figure 7 Top view and side view of the cam turntable of the reusable self - adapting circular - finding flange internal support device described in this application;

[0038] Figure 8 Schematic structural diagram of the reusable self - adapting circular - finding flange internal support device placed in a container in a tightened state;

[0039] Figure 9 Two schematic structural diagrams of the support block of the reusable self - adapting circular - finding flange internal support device described in this application;

[0040] Figure 10 Schematic structural diagram of the reusable self - adapting circular - finding flange internal support device propping against the inner wall of the container in an unfolded state;

[0041] Figure 11 This application is based on the attachment Figure 10 Side sectional view;

[0042] Figure 12 Schematic diagram of the support position of the reusable self - adapting circular - finding flange internal support device in the container described in this application;

[0043] Figure 13 Schematic diagram (top view, side view) of the segmented flange pre - fabricated part in the applicant's early scheme;

[0044] Figure 14 Schematic diagram (top view, side view) of the segmented flange pre - fabricated part in this application;

[0045] Figure 15 Schematic diagram (side view, top view) of the second tooling in this application;

[0046] Figure 16 Assembly schematic diagram of the positioning flange, the first tooling, the segmented flange pre - fabricated part, and the second tooling in this application;

[0047] Figure 17 Schematic diagram of the connection relationship between the reusable self - adapting circular - finding flange internal support device and the positioning flange described in this application;

[0048] Figure 18 Schematic diagram of the reusable self - adapting circular - finding flange internal support device used in the production process of large - scale thin - wall pressure vessels (corresponding to the support position E);

[0049] Figure 19This is another schematic diagram (corresponding to the support position A) of the reusable adaptive circle-finding flange internal support device described in this application during the production process of large thin-walled pressure vessels.

[0050] Explanation of reference numerals in the drawings:

[0051] 1. Top flange; 2. Side wall flange; 21. First flange; 22. Second flange; 23. Third flange; 24. Fourth flange; 3. Segmented flange; 31. First segment of flange; 32. Second segment of flange; 4. Cylindrical body; 5. Positioning flange; 51. First assembly hole; 6. Bottom flange; 7. Support rib; 8. Prefabricated segmented flange; 81. Body of the first segment of flange; 82. Body of the second segment of flange; 83. Notch; 84. Preset cutting line; 85. Second assembly hole; 86. Third assembly hole; 9. First tooling; 10. Second tooling; 101. Support cylinder; 102. First upper plate; 1021. Limiting step; 106. Seventh assembly hole; 11. Third tooling; 12. Support block; 121. Rotating shaft; 122. Support surface; 123. Avoidance opening; 124. Connection hole; 13. Cam turntable; 131. First hole; 132. Connecting shaft; 133. Second hole; 14. Pull rod; 15. Base plate; 16. Driving disc; 17. Transmission shaft; 18. Lifting lug; 19. Locking mechanism; 200. Motor; 201. Reducer; 202. Digital level; 30. Tooling platform. Detailed implementation manners

[0052] In the following, the inventive concepts of the present disclosure will be described using the terms that those skilled in the art would typically use to convey the essence of their work to other artisans in the art. However, these inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments described herein.

[0053] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other. At the same time, since some components involved in this application are the same as those in the applicant's early patents CN116511837A and CN116511838A, the specific structures of the relevant components can be directly consulted in this patent. The orientation terms such as "upper" and "lower" in this application are all referenced to the coordinates in the Figure 12 drawings.

[0054] The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0055] According to the introduction in the background art of the present application, in order to solve the problems such as tooling damage, influence on material properties, and low production efficiency that are difficult to avoid due to the use of the third tooling in the prior art, and also to solve the problems that when an individual tooling is removed in advance, it cannot provide effective support structurally, resulting in easy deformation during the machining process, difficult welding operation, and being not conducive to improving the machining accuracy, this embodiment proposes a reusable self-adaptive circular flange internal support device, as shown in the attached Figure 5-19 As shown, the device is used for the production and manufacturing of large thin-walled pressure vessels (referred to as "vessels", which are substantially the same as the "large thin-walled box-like products" in the applicant's early patents).

[0056] Before introducing the device, for the convenience of subsequent description, the present application first briefly introduces the "large thin-walled box-like products" in the applicant's early patents: The vessel includes a top flange 1, a side wall flange 2, a segmented flange 3, a cylindrical body 4, a positioning flange 5, a bottom flange 6, and support ribs 7. The segmented flange 3 is processed from a segmented flange preform 8. During the production and manufacturing process of the vessel, a first tooling 9, a second tooling 10, and a third tooling 11 are arranged inside the vessel to support the corresponding components. The vessel, as a large thin-walled box-like product, has certain specifications requirements. For example, the diameter range of a certain series of fixed boxes is 1500 mm - 6000 mm, the height range is 600 mm - 5000 mm, and the weight range is 500 Kg - 90000 Kg. For a specific fixed box size and specification, reference can be made to the prior art, and the present application does not make excessive restrictions.

[0057] The device includes a central driving member, a pull rod 14, a cam turntable 13, and a support block 12. One end of the pull rod 14 is connected to the central driving member, and the other end is connected to the cam turntable 13. The cam turntable 13 is connected to the support block 12, and the cam turntable 13 has an axis point. In the horizontal direction, the pull rod 14 is located between the connection point of the cam turntable 13 and the support block 12 and the axis point (it can also be considered that the connection position of the cam turntable 13 and the support block 12 is on one side of the pull rod 14, and the axis point is on the other side of the pull rod 14). Such that as the central driving member and the pull rod 14 move, the cam turntable 13 is driven to rotate around the axis point, enabling the support block 12 to move in a direction away from or towards the device.

[0058] Thus, through the movement of the support block 12 in the present application, the device has a tightened state (such as Figure 8 ) and an expanded state (such as Figure 10) and the device is used in the production and manufacturing process of the container, so that the device can enter any height inside the container in a tightened state and be adjusted from the tightened state to the unfolded state, and then can support the cylindrical body 4 and related components near the corresponding height position inside the container. Under the action of this device, compared with the applicant's early technology, using this device in the production and manufacturing process of the container can at least replace and eliminate the third tooling 11, avoid the inability to directly remove the third tooling 11 due to space interference, and completely eliminate the inevitable problems such as tooling damage, affecting the material properties of the container, and low production efficiency caused by the third tooling 11; at the same time, when individual toolings (such as the first tooling 9 and the second tooling 10) need to be removed in advance, the device can be set at any height that needs to be supported to support the cylindrical body 4 and related components, provide effective support for the processing process of the related component structure, avoid deformation of the related components during the processing process, improve the processing accuracy, ensure the product quality, and at the same time reduce the operation difficulty of the construction personnel.

[0059] The device includes a substrate 15, the central driving member is arranged on the substrate 15, the cam turntable 13 is provided with a first hole 131, a second hole 133, and a connecting shaft 132. The cam turntable 13 is fixedly connected to the substrate 15 through the second hole 133 to form the axis point of the cam turntable 13; the cam turntable 13 is detachably connected to the support block 12 through the first hole 131, and the cam turntable 13 is connected to the pull rod 14 through the connecting shaft 132.

[0060] Preferably, the substrate 15 is a circular plate, the central driving member is arranged at the center of the substrate 15, at least two cam turntables 13 are arranged on the outer edge of the substrate 15 in a circumferential array, and each cam turntable 13 is provided with a corresponding support block 12. When the center of the substrate 15 coincides with the central axis of the cylindrical body 4, in the unfolded state of the device, each support block 12 can stably support the inner wall of the cylindrical body 4 with the same (or similar) acting force.

[0061] Among them, as shown in the attached Figure 7 figure, point O is the rotation center point of the central driving member. Denote the center of the first hole 131 as f, the axis center of the connecting shaft 132 as g, and the center of the second hole 133 as h. In the vertical projection direction of the cam turntable 13, the distance between g and h is 1.1 - 1.4 times the distance between f and g, and the distance between f and h is 1.2 - 2 times the distance between f and g. On this basis, since the pull rod 14 is located at the connection point of the cam turntable 13 and the support block 12 (that is, Figure 7 f in Figure 7h) in the figure, so that when the cam turntable 13 is driven by the pull rod 14, the support block 12 can move a sufficiently long distance away from the point O, and can also move a certain distance towards the point O, so that when the device is in the expanded state, each support block 12 can firmly support the cylindrical body 4, and when the device is in the tightened state, there will be no spatial interference with the components inside the cylindrical body 4.

[0062] The central driving member includes a motor 200, a reducer 201, a transmission shaft 17, and a transmission disc 16 connected in sequence. The transmission disc 16 is connected to the pull rod 14, so that the motor 200 can drive the pull rod 14 to move after deceleration, providing power for tightening and unfolding the device.

[0063] On this basis, the device includes a locking mechanism 19 for mechanically locking the central driving member. When the device is in an extended state and is attached and pressed against the inner wall of the cylinder 4 in a required posture, the locking mechanism 19 can mechanically lock the central driving member, and then the power supply of the motor 200 can be disconnected, and the product can be manufactured.

[0064] The support block 12 is provided with a rotating shaft 121, and the rotating shaft 121 penetrates the first hole 131 of the cam rotating disk 13 in a detachable manner, and the support block 12 can rotate relative to the cam rotating disk 13 along the axis of the rotating shaft 121. Therefore, on the one hand, each cam rotating disk 13 can replace the support block 12 according to actual needs, and on the other hand, since the support block 12 and the cam rotating disk 13 can rotate relative to each other, during the deployment of the device, during the contact between the support block 12 and the inner wall of the cylinder 4, the support block 12 can automatically rotate, so that the support block 12 can automatically adjust the angle to fit the inner wall of the cylinder 4 as much as possible, thereby realizing the self-adaptive rounding function of the device.

[0065] Preferably, the side of the support block 12 facing the inner wall of the cylinder 4 is recorded as the support surface 122, and the curvature of the support surface 122 is the same as the curvature of the inner wall of the cylinder 4. Therefore, during the adaptive rounding process of the device, the support block 12 can completely fit with the inner wall of the cylinder 4 to increase the contact area between the two, which is not only conducive to more stable support of the cylinder 4 and related components, but also conducive to increasing the friction force between the device and the cylinder 4, which helps to firmly support the device at a specific height in the container.

[0066] The support surface 122 is provided with an avoidance opening 123, so that when the support block 12 fits against the inner wall of the cylindrical body 4, it can avoid space for some components (such as the side wall flange 2). At the same time, the support block 12 in this application does not have only one fixed structure, but multiple support blocks 12 with different positions of the avoidance opening 123 need to be set to replace the corresponding support block 12 according to the components to be avoided, which is also one of the main reasons why the support block 12 and the cam turntable 13 in this application need to be detachable. Specifically, four side wall flanges 2 are provided on the side wall of the container, which are respectively denoted as the first flange 21, the second flange 22, the third flange 23, and the fourth flange 24. The centers of the first flange 21 and the second flange 22 are at the same height, and the centers of the third flange 23 and the fourth flange 24 are at the same height, but the flange diameters are different. This makes it necessary to replace the special support block 12 with the corresponding avoidance opening 123 when the device is at the corresponding height. While ensuring that the support block 12 stably supports the inner wall of the cylindrical body 4, it avoids space interference, ensures the normal progress of the welding operation, and controls the welding deformation of different support parts, reducing the deformation risk. Of course, if there is no space interference problem at a certain height, the support block 12 without the avoidance opening 123 can be directly used.

[0067] Lifting lugs 18 are provided on the upper surface of the substrate 15. Preferably, the lifting lugs 18 are arranged in a circumferential array along the center of the substrate 15. By providing the lifting lugs 18, an external lifting device can drive the device to move arbitrarily. When the device reaches a certain height required inside the container, the device is adjusted to the unfolded state. There is a certain frictional force between the support block 12 and the inner wall of the cylindrical body 4. The static frictional force generated between the device and the inner wall of the cylindrical body 4 in this application can balance the gravity of the device. At this time, the external lifting device does not need to provide a force to the device, and the lifting device can be removed to facilitate the operation of the construction personnel. Subsequently, when the device needs to be adjusted in position, the lifting device is used to drive the device to move again.

[0068] On this basis, the support block 12 can be provided with connection holes 124, so that other components that are inconvenient to move manually (such as the positioning flange 5) can be fixedly connected to the corresponding components through the support block 12 of the device, and then moved under the drive of the lifting device, playing the function of a general lifting device. For example, as Figure 17 shown, the positioning flange 5 is provided with first assembly holes 51. When the device is in the unfolded state, the connection holes 124 can be aligned with the first assembly holes 51 one by one, and the device can be fixed to the positioning flange 5 by means of fastening. Of course, if the support block 12 does not need to fixedly connect to other components, the support block 12 without the connection holes 124 can be directly used.

[0069] A digital level 202 is provided on the upper surface of the substrate 15 to indicate whether the device is in a horizontal state during use, ensuring that the device can support the cylindrical body 4 and related components in a horizontal state.

[0070] When the device is in the tightened state, it is lifted by the lifting lug 18 and placed at a specific height position inside the container. Then, the motor 200 is powered on to drive the reduction gear 201 to rotate, driving the locking mechanism 19 to move. The locking mechanism 19 drives the transmission disk 16 to rotate clockwise (or counterclockwise) through the transmission shaft 17, driving the pull rod 14 to rotate. The pull rod 14 pushes the cam turntable 13 to rotate around the rotating shaft, pushing the support block 12 to expand outward. During the final movement of the support block 12, it adaptively aligns with the inner wall of the cylindrical body 4. During the alignment process, it is necessary to ensure that the digital level 202 is within the horizontal range value. Finally, the support block 12 fits and presses against the inner wall of the cylindrical body 4. After the locking mechanism 19 operates to achieve mechanical locking, the power supply of the motor 200 is disconnected, and then the manufacturing of the product can be carried out. The removal process of the device is the reverse operation of the above process and will not be elaborated.

[0071] When the device is used in a container, theoretically it can support at any height inside the container. However, considering the main processing positions and the welding deformation control areas during the actual production process, as shown in the appendix Figure 12 This application introduces the main support positions of the device inside the cylindrical body 4:

[0072] The first support position (denoted as support position E) is located at a position 0 - 77 mm below the lower plane of the top flange 1 in the vertical height direction;

[0073] The second support position (denoted as support position D) is located at a position 78 - 420 mm below the lower plane of the top flange 1 in the vertical height direction;

[0074] The third support position (denoted as support position C) is located at a position 0 - 62 mm above the upper plane of the prefabricated sectional flange 8 in the vertical height direction;

[0075] The fourth support position (denoted as support position B - 1) is located at a position 0 - 190 mm below the lower plane of the prefabricated sectional flange 8 in the vertical height direction;

[0076] The fifth support position (denoted as support position B - 2) is located at a position 0 - 130 mm above the upper plane of the positioning flange 5 in the vertical height direction;

[0077] The sixth support position (denoted as support position A) is located at a position 0 - 65 mm below the upper plane of the positioning flange 5 in the vertical height direction; for the consideration of avoiding spatial interference, the positioning flange 5 is provided with an assembly groove, and the device can be supported in the assembly groove to realize the setting of the first support position.

[0078] On this basis, the present application proposes a use method of a reusable self - adapting circular - finding flange internal support device. Since the device is mainly used for the production and manufacturing of large - scale thin - wall pressure vessels, the use method can also be regarded as a production and manufacturing method of large - scale thin - wall pressure vessels. Specifically, the use method includes:

[0079] S1. Place the rough - machined positioning flange 5 on the assembly platform, assemble the first tooling 9 onto the upper plane of the positioning flange 5. After measurement is qualified, connect and fix the first tooling 9 and the positioning flange 5 through fasteners to form a first assembly component;

[0080] Among them, in the process of placing the positioning flange 5 on the assembly platform, the device can be used, and the support block 12 with a connection hole 124 can be used. As shown in the appendix, when the device is in the unfolded state, align the connection hole 124 with the first assembly hole 51 of the positioning flange 5, connect and fix the support block 12 and the positioning flange 5 through fasteners, and then under the action of the lifting equipment, drive the device and the positioning flange 5 to move to the assembly platform together, and then disassemble the device from the positioning flange 5. This process does not require manual placement of the heavier positioning flange 5 on the assembly platform, reducing the operation intensity. Figure 17 As shown, the device is in the unfolded state, align the connection hole 124 with the first assembly hole 51 of the positioning flange 5, connect and fix the support block 12 and the positioning flange 5 through fasteners, and then under the action of the lifting equipment, drive the device and the positioning flange 5 to move to the assembly platform together, and then disassemble the device from the positioning flange 5. This process does not require manual placement of the heavier positioning flange 5 on the assembly platform, reducing the operation intensity.

[0081] In addition, during the manufacturing process of the container, the lifting of parts inside the container is often encountered, such as: the positioning flange 5, the pre - fabricated segment flange 8. Taking the positioning flange 5 as an example, since the positioning flange 5 is a semi - finished machined part before assembly, but all the threaded holes on the upper plane have been finished machined in place. To avoid the machining surface of the positioning flange 5 from being bruised during hoisting and to ensure the stability during hoisting, the applicant's early process plan needed to use a special hoisting tooling to solve this problem;

[0082] In the present application, through the device, while realizing the support for the welding deformation of the inner wall of the container, a connection interface is also provided for the hoisting of the positioning flange 5. Since all the holes on the upper plane of the flange have been finished machined before the positioning flange 5 is assembled, therefore, the device only needs to replace the support block 12 with a connection hole 124, and connect the connection hole 124 and the first assembly hole 51 of the positioning flange 5 through bolts, then the hoisting and transfer of the positioning flange 5 can be realized. By using the digital level 202 of the device, the levelness of the positioning flange 5 during transfer and assembly can be ensured.

[0083] S2. Place the second tooling 10 on the assembly platform with the upper surface of the first upper plate 102 of the second tooling 10 facing downwards. Slip the segmented flange preform 8 over the outer side of the support cylinder 101 of the second tooling 10, and abut the inner edge of the segmented flange preform 8 against the limit step 1021 of the first upper plate 102. Connect and fix the segmented flange preform 8 and the second tooling 10 with fasteners to form a second assembly component;

[0084] S3. Lift the second assembly component above the first assembly component with the upper surface of the first upper plate 102 of the second tooling 10 facing upwards. Positionally snap-connect the second tooling 10 with the first tooling 9, and connect and fix the second tooling 10 and the first tooling 9 with fasteners, so that the first assembly component and the second assembly component are connected to form a third assembly component;

[0085] For the specific structure of the first tooling 9 and the positional snap-connection between the second tooling 10 and the first tooling 9, reference can be made to the prior art, and details are not elaborated in this application. The third assembly component is as shown in the appendix Figure 16 as follows.

[0086] After step S3 in assembling the third assembly component, it further includes: measuring the distance X1 between the upper surface of the positioning flange 5 in the third assembly component and the lower surface of the segmented flange preform 8. According to the ultimately required distance H1 between the upper plane of the segmented flange 3 and the upper plane of the positioning flange 5, the ultimately required minimum thickness D1 of the segmented flange 3, the actual machining allowance of the upper surface of the positioning flange 5, and the actual thickness allowance of the segmented flange 3, and also referring to the welding deformation shrinkage amount, determine the distance X2 between the lower surface of the first upper plate 102 of the second tooling 10 and the lower end surface of the support cylinder 101 of the second tooling 10, so that X2 can ensure sufficient allowances for D1 and H1; among them, as long as the subsequent processing is satisfied and at the same time sufficient allowances for D1 and H1 are ensured and the product requirements can be met, etc., X2 can actually be arbitrarily taken within a numerical range that satisfies the above conditions, rather than a fixed value, that is, X2 is theoretically a numerical range that meets the conditions, but in actual operation, the actual value of X2 is a specific value within the range value for the convenience of subsequent processing; then, remove the fasteners connecting the second tooling 10 and the first tooling 9, perform secondary machining on the lower side of the second tooling 10 so that the distance between the lower surface of the first upper plate 102 of the second tooling 10 and the lower end surface of the support cylinder 101 of the second tooling 10 is X2, and then reconnect the first assembly component and the second assembly component in accordance with the assembly method of step S3 to form a third assembly component.

[0087] Among them, for the relevant dimensions of the container in this application, they are exactly the same as those in the applicant's earlier application, and details are not elaborated.

[0088] S4. Taking the outer peripheral circle of the positioning flange 5 as the machining reference, perform secondary machining on the outer peripheral circle of the segmented flange prefabricated part 8 so that the diameter φM of the outer peripheral circle of the segmented flange prefabricated part 8 is equal to the diameter φN of the outer peripheral circle of the positioning flange 5, ensuring the concentricity of the positioning flange 5 and the segmented flange prefabricated part 8 during the assembly process with the cylindrical body 4, and making preparations for the subsequent fitting and installation of the cylindrical body 4;

[0089] S5. Place the bottom flange 6 on the assembly platform, respectively draw the outer circle line of the positioning flange and the outer circle line of the cylindrical body on the upper surface of the bottom flange 6. In the way that the positioning flange 5 faces downward, assemble the third assembly component with the bottom flange 6 so that the stop step at the bottom of the positioning flange 5 is positioned and assembled with the central hole step of the bottom flange 6;

[0090] In step S5, after the second assembly component is assembled with the bottom flange 6, check and judge whether the first condition is met. If it is met, it is determined that the second assembly component is assembled with the bottom flange 6 qualified, so as to ensure the accuracy of the step-by-step assembly of relevant components and minimize the assembly error as much as possible.

[0091] The first condition includes: the clearance between the upper plane of the bottom flange 6 and the lower plane of the positioning flange 5 ≤ 0.02 mm; and, the outer circle of the positioning flange 5 coincides with the drawn outer circle line of the positioning flange on the bottom flange 6.

[0092] S6. Place the device inside the cylindrical body 4, use the support block 12 to support the inner wall of the cylindrical body 4, and machine the bottom wall port of the cylindrical body 4 and the corresponding assembly surface of the bottom flange 6 to ensure that the assembly surfaces between the cylindrical body 4 and the bottom flange 6 are flush;

[0093] Among them, when the device supports the inner wall of the cylindrical body 4, it should be ensured that the digital display level 202 shows a horizontal position. At the same time, in the rest of the support processes of the device in this application, a horizontal state should also be ensured.

[0094] S7. Draw the alignment line at the position where the segmented flange prefabricated part 8 fits on the inner wall of the cylindrical body 4 as a reference line for whether the subsequent assembly is in place. Then move the support position of the device on the cylindrical body 4 above the alignment line, and there is no interference between the device and the top of the third assembly component;

[0095] S8. Load the cylindrical body 4 with the device from above the third assembly component so that the cylindrical body 4 sleeves outside the third assembly component, and make the lower end surface of the cylindrical body 4 fit with the upper surface of the bottom flange 6;

[0096] In step S8, after the cylindrical body 4 is loaded from above the second assembly component and fits with the bottom flange 6, check and judge whether the second condition is met. If it is met, it is determined that the cylindrical body 4 is assembled qualified, so as to ensure the accuracy of the step-by-step assembly of relevant components and minimize the assembly error as much as possible.

[0097] The second condition includes: the clearance between the lower end face of the cylindrical body 4 and the upper surface of the bottom flange 6 ≤ 0.02 mm; and, the outer circle of the cylindrical body 4 coincides with the outer circle line of the cylindrical body drawn by the bottom flange 6; and, the clearance between the inner wall of the cylindrical body 4 and the outer edge of the segmented flange preform 8 is uniform, and the error of the clearance size ≤ 0.5 mm (which can be understood as the deviation between the actually measured clearance size and the design requirement).

[0098] S9. Spot weld and fix the weld joint to be welded between the outer circle of the cylindrical body 4 and the bottom flange 6. On the circumferential perimeter, the spot welding requires a weld point every 200 mm; then spot weld and fix the weld joint to be welded at the bottom after the positioning flange 5 and the bottom flange 6 are assembled. On the circumferential perimeter, the spot welding requires a weld point every 200 mm;

[0099] For the spot welding of the positioning flange 5 and the bottom flange 6, the entire assembly can be first placed horizontally (laid down), and the entire assembly can be successively rolled for corresponding spot welding operations. After the spot welding is completed, the entire assembly can be righted.

[0100] S10. Take out the device from the cylindrical body 4, and then spot weld the contact position between the inner wall of the cylindrical body 4 and the outer edge of the segmented flange preform 8; preferably, on the circumferential perimeter, there is a weld point every 200 mm;

[0101] In step S10, since the cylindrical body 4 and the third assembly component have been spot welded and fixed in step S9, the device can be taken out from the cylindrical body 4.

[0102] S11. Load the device into the upper port of the cylindrical body 4 and support it at the support position E. Taking the upper plane of the bottom flange 6 as the plane reference and the outer circle surface of the bottom flange 6 as the concentric reference, machine the upper port plane of the cylindrical body 4 to ensure that the total height of the cylindrical body 4 is machined to the design height required by the drawing;

[0103] Among them, during the machining process of step S11, the entire assembly can only be lifted from the outer circle of the bottom flange 6.

[0104] S12. Mark the positioning center points of each side wall flange 2 on the outer side cylinder of the cylindrical body 4;

[0105] Among them, during the process of marking the positioning center points, the set orientation of the notch 83 in the segmented flange preform 8, the lower edge of the cylindrical body 4 and other determined positions can be used as the reference benchmarks in the spatial position. For the container of the present application, the side wall flange 2 may include a first flange 21, a second flange 22, a third flange 23, and a fourth flange 24.

[0106] S13. Based on the positioning center points marked in step S12, use a CNC boring and milling machine to bore holes in the side wall of the cylindrical body 4 to machine each side wall flange hole.

[0107] Among them, the programming of the machining process is set with reference to the scribed lines and the spatial indexing angle of the drawing. After boring, the dimensions of the bored holes on the outer cylindrical body are inspected.

[0108] S14. Load the rough machining blanks of each side wall flange 2 one by one into the corresponding side wall flange holes of the cylindrical body 4. After the dimensions are inspected to be qualified, spot-weld each side wall flange 2 to the cylindrical body 4 for fixation.

[0109] S15. Assemble the top flange 1 after rough machining with the upper end face of the cylindrical body 4 so that the concentricity between the top flange 1 and the inner circle of the cylindrical body 4 is ≤ 0.2 mm, and then weld the top flange 1 to the upper end face of the cylindrical body 4.

[0110] S16. Take out the device at the support position E from the cylindrical body 4, replace the support block 12 with an avoidance opening 123, and support the device at the support position D.

[0111] Among them, referring to the attached Figure 12 and the positions of each side wall flange 2, the replaced support block 12 of the device with an avoidance opening 123 can at least provide spatial avoidance for all side wall flanges 2 at the height where the support position D is located. In this application, it mainly refers to providing spatial avoidance for the first flange 21 and the second flange 22.

[0112] S17. For the side wall flanges 2 (the first flange 21 and the second flange 22) at the height where the support position D is located, perform full-circle welding between the side wall flange 2 and the outer side wall of the cylindrical body 4, and perform partial welding between the side wall flange 2 and the inner side wall of the cylindrical body 4. Then take out the device at the support position D from the cylindrical body 4.

[0113] It should be noted that full-circle welding means welding the entire outer circumference of the side wall flange 2 completely; partial welding means that due to the obstruction of the device, only the outer circumference of the side wall flange 2 higher than the support position D can be welded, and the outer circumference of the side wall flange 2 blocked by the device is temporarily not welded, thus forming a situation of partial welding, which can also be regarded as welding the upper outer circumference of the side wall flange 2.

[0114] S18. Disassemble and take out the second tooling 10, set support ribs 7 on the lower side of the segmented flange prefabricated part 8, and spot-weld the support ribs 7 to the lower surface of the segmented flange prefabricated part 8 and the inner side wall of the cylindrical body 4 respectively.

[0115] S19. Replace the support block 12 of the device with an avoidance opening 123, and support the device at the support position C.

[0116] Among them, with reference to the attached Figure 12 and the positions of each side wall flange 2, the support block 12 with the avoidance opening 123 replaced by the device can at least perform spatial avoidance on all side wall flanges 2 at the height where the support position C is located. This application mainly refers to performing spatial avoidance on the third flange 23 and the fourth flange 24.

[0117] S20. For the side wall flanges 2 (the first flange 21 and the second flange 22) that are locally welded to the inner side wall of the cylindrical body 4 in step S17, weld the weldable area between the side wall flange 2 and the inner side wall of the cylindrical body 4 where welding work can be carried out; for the side wall flanges 2 (the third flange 23 and the fourth flange 24) at the height where the support position C is located, perform full-circle welding between the side wall flange 2 and the outer side wall of the cylindrical body 4, and perform local welding between the side wall flange 2 and the inner side wall of the cylindrical body 4;

[0118] In step S20, for the side wall flanges 2 (the first flange 21 and the second flange 22) that have been locally welded in step S17, mainly weld the positions with welding space. For individual weldable positions that may have spatial interference with the device during the welding process, such welding positions will not be welded temporarily. The introduction of the full-circle welding and local welding in step S20 is the same as that in step S17, except for the different side wall flanges, which will not be elaborated here. It should be reminded that the "local welding" position can also be regarded as the weldable area between the side wall flange 2 and the inner side wall of the cylindrical body 4 where welding work can be carried out (without interference with the device and not blocked by the device).

[0119] S21. Adjust and support the device at the support position B-1 from the support position C, and weld the upper edge of the segmented flange prefabrication 8 to the inner side wall of the cylindrical body 4; for all side wall flanges 2, weld the weldable area between the side wall flange 2 and the inner side wall of the cylindrical body 4 where welding work can be carried out;

[0120] Among them, the device is tightened at the support position C and passes downward through the segmented flange prefabrication 8, and unfolds after reaching the support position B-1, so that the device is supported at the support position B-1; when the device is at the support position B-1, inside the cylindrical body 4, there is sufficient welding space at the upper edge of the segmented flange prefabrication 8, and the upper edge of the segmented flange prefabrication 8 can be completely welded to the inner side wall of the cylindrical body 4;

[0121] Meanwhile, as the device moves downward, for the first flange 21 and the second flange 22, there is sufficient welding space in the area to be welded between them and the inner wall of the cylindrical body 4, enabling complete welding of the first flange 21 and the second flange 22. For the third flange 23 and the fourth flange 24, there is still spatial interference between the device and the area to be welded in the lower half of them. Therefore, for the third flange 23 and the fourth flange 24, welding is temporarily only carried out at positions with sufficient welding space. For some positions to be welded that may have spatial interference with the device (be blocked by the device) during the welding process, welding work on such positions is temporarily not carried out first.

[0122] S22. Adjust and support the device at the support position B-2 from the support position B-1, weld the lower edge of the segmented flange prefabrication 8 and the inner wall of the cylindrical body 4, and weld all the support ribs 7 and the inner wall of the cylindrical body 4. For all the side wall flanges 2, weld the areas to be welded between the side wall flanges 2 and the inner wall of the cylindrical body 4 where welding work can be carried out.

[0123] Among them, the device is tightened at the support position B-1 and moves downward to the support position B-2 to be unfolded, so that the device is supported at the support position B-2. When the device is at the support position B-2, inside the cylindrical body 4, there is sufficient welding space between the upper edge of the segmented flange prefabrication 8, the support ribs 7 and the inner wall of the cylindrical body 4, and the lower edge of the segmented flange prefabrication 8 and the inner wall of the cylindrical body 4, as well as all the support ribs 7 and the inner wall of the cylindrical body 4 can be completely welded respectively.

[0124] For the welding work of the side wall flanges 2, since the first flange 21 and the second flange 22 have been welded in step S21, only the welding of the third flange 23 and the fourth flange 24 remains. As the device moves downward, there is sufficient welding space in the area to be welded between the third flange 23 and the inner wall of the cylindrical body 4, enabling complete welding of the third flange 23. However, the diameter of the fourth flange 24 is relatively large, and there is still spatial interference between the device and the area to be welded at the bottom of it. Therefore, for the fourth flange 24, welding is temporarily only carried out at positions with sufficient welding space. For some positions to be welded that may have spatial interference with the device during the welding process, welding work on such positions is temporarily not carried out first.

[0125] S23. Remove the device at the support position B-2 from the cylindrical body 4, remove the first tooling 9; support the device at the support position A.

[0126] Among them, after the device is taken out, the support block 12 without the avoidance opening 123 is replaced for the device, so that the device can be fully contacted and supported at the support position A. Then the device enters the inside of the cylindrical body 4 in a tightened state, and successively passes through the top flange 1 and the segmented flange prefabrication 8 downward to reach the support position A in the assembly groove of the positioning flange 5. The device unfolds and supports on the positioning flange 5, as shown in the attached Figure 19 working condition shown.

[0127] S24. Weld the areas to be welded between all the side wall flanges 2 and the inner side wall of the cylindrical body 4 (mainly referring to the areas that have not been welded at the bottom of the fourth flange 24), and weld between the upper edge of the positioning flange 5 and the inner side wall of the cylindrical body 4;

[0128] Among them, since only the area at the bottom of the fourth flange 24 remains unwelded, after the device is supported at the support position A, there is no spatial interference in the welding operation, and the welding work of all the side wall flanges 2 can be completed. At the same time, the upper edge of the positioning flange 5 and the inner side wall of the cylindrical body 4 can also be completely welded.

[0129] S25. Place the entire assembly (including the device) on the tooling platform 30 with a central hole, and perform intermittent welding fixation between the outer circle of the bottom flange 6 and the upper surface of the tooling platform 30 (at the W-1 position in the attachment Figure 19 ). In the circumferential direction, the intermittent welding requires welding a 30-mm-long weld every 200 mm; perform intermittent welding fixation between the inner side wall of the central hole of the tooling platform 30 and the lower plane of the bottom flange 6 (at the W-2 position in the attachment Figure 19 ). In the circumferential direction, the intermittent welding requires welding a 30-mm-long weld every 200 mm.

[0130] Among them, it should be noted that the diameter of the central hole is larger than the diameter of the circle where the weld between the positioning flange 5 and the bottom flange 6 is located, and preferably they are concentric, so that the central hole can correspond to the lower plane of the bottom flange 6 and perform welding.

[0131] S26. Weld the outer circle of the cylindrical body 4 and the bottom flange 6 completely, then turn the entire assembly (including the tooling platform 30 and the device) to a state with the bottom facing up, and weld the areas to be welded at the bottom after the positioning flange 5 and the bottom flange 6 are assembled completely;

[0132] Thus, internal support is carried out inside the entire assembly through the said device, and overall restraint is carried out outside the entire assembly through the tooling platform 30, so that during the welding process of components such as the cylindrical body 4, the bottom flange 6, and the positioning flange 5, the functions of internal and external coordinated restraint and up and down coordinated restraint are achieved. Compared with the applicant's early patents, it can effectively avoid deformation and displacement of components such as the cylindrical body 4, the bottom flange 6, and the positioning flange 5 during the welding process.

[0133] S27. Flip the entire assembly back to its original state (i.e., the state with the bottom facing down), and take out the said device at the support position A.

[0134] Among them, the said device is not used in the production and manufacturing process after step S27, that is, the said device has been used up. The use method of a reusable self-adaptive circular flange internal support device in this application can be intuitively understood as the process from step S1 to step S27.

[0135] Combined with the introduction of the structure, use method, etc. of the said device in this application, the said device proposed in this application has at least the following five beneficial effects during the production and manufacturing process of large thin-walled pressure vessels:

[0136] 1. Due to the limitation of the internal welding space of the container structure, after removing the support tooling inside the cylindrical body 4, this process equipment can provide internal support at different height positions according to the welding requirements of the side wall flange 2 and the cylindrical body 4, reduce the deformation and shrinkage of the welding part of the side wall flange 2 to the cylindrical body 4, and ensure the processing accuracy and appearance quality of the final finished product of the container.

[0137] 2. The third tooling 11 in the prior art is directly replaced by the said device (such as the working condition shown in the attachment Figure 18 ), to achieve the support during the alignment and welding process of the top flange 1. After welding is completed, it can be taken out without any damage, thereby improving the reusable performance of the process equipment and reducing the manufacturing cost and manufacturing cycle of the process equipment;

[0138] At the same time, compared with the prior art, since the third tooling 11 is replaced by the said device, the connection relationship and connection position between the segmented flange prefabrication 8 and the original third tooling can both be cancelled. This application further optimizes the structure of the segmented flange prefabrication 8. Refer to the attachment Figure 13 (original segmented flange prefabrication) and the attachment Figure 14Comparison of the (improved segmented flange prefabrication), and the specific optimization design measures are as follows: Further narrow the connecting ring surface, that is, increase the inner diameter of the segmented flange prefabrication 8, the flange ring surface of the optimized structure becomes narrower, and there is no need to set the second assembly hole 85. At the same time, the setting position of the third assembly hole 86 also moves outward as the flange ring surface narrows. On the one hand, the narrowing of the ring surface and the omission of the second assembly hole 85 make part of the preset cutting line 84 shorter. While omitting the assembly process between the segmented flange prefabrication 8 and the original third tooling, it also reduces the cutting difficulty of the subsequent segmented flange prefabrication 8, which is beneficial to reducing the processing time. On the other hand, as the inner diameter of the segmented flange prefabrication 8 increases, the device can more easily enter the space below the segmented flange prefabrication 8 for support, further avoiding the occurrence of space interference. At the same time, the narrowing of the segmented flange prefabrication 8 saves manufacturing raw materials, and the cost of the part manufacturing link further decreases, saving manufacturing costs for mass-produced products;

[0139] With the structural optimization of the segmented flange prefabrication 8, compared with the prior art, the present application also improves the structure of the second tooling 10, expands the outer edge of the first upper plate 102 of the second tooling 10, increases the outer diameter of the first upper plate 102, so that the seventh assembly hole 106 of the first upper plate 102 can still be fitted and installed with the third assembly hole 86 of the segmented flange prefabrication 8.

[0140] 3. The device can realize the support function of different parts by a set of main motion mechanism of the device cooperating with different support blocks 12, which is beneficial to reducing the number of process equipment, increasing versatility, and reducing the cost of manufacturing process equipment. It has wide versatility for the manufacturing of mass-produced and finalized products.

[0141] At the same time, for the welding of each component inside the cylindrical body 4 (such as the side wall flange 2), the device can support and perform small-area welding near the corresponding position, and through the adjustment of the device at the support position, on the basis of ensuring a good support effect, the welding process of the entire component can be carried out step by step and successively in small areas, and finally the welding of the entire component is completed, ensuring that the welded component will not deform or displace at any welding point of the entire weld.

[0142] 4. Since the support space at the welding position in the container structure is narrow, and the inner wall of the structure is blocked by the top flange 1 and the segmented flange 3, it brings more inconvenience to the operator for the centering support between the support block and the cylindrical body 4. Therefore, the device adopts the support block 12 and the cylindrical body 4 to be able to adaptively center and support during the support process, greatly reducing the difficulty of centering support.

[0143] 5. The device uses an electric structure to drive the support of the process equipment, reducing the labor intensity during manufacturing, improving the positioning accuracy and efficiency during the manufacturing of batch container products, and saving a certain amount of labor costs.

[0144] However, for a complete introduction to the manufacturing process of large thin-walled pressure vessels, the processing process after step S27 belongs to the manufacturing method of large thin-walled pressure vessels. Of course, it can also be regarded as a usage method of a reusable self-adaptive circular flange internal support device.

[0145] Specifically, after step S27, the method includes:

[0146] S28. Perform stress relief annealing on the entire assembly with the tooling platform 30 to ensure that the weld stress is reduced to the lowest level.

[0147] S29. Use a grinding wheel to grind open the fixed position of the intermittent weld between the tooling platform 30 and the bottom flange 6, and remove the tooling platform 30 from the entire assembly.

[0148] S30. Use a large-tonnage profiling machine to level and profile the flange plane of the entire assembly.

[0149] S31. Use a grinding wheel to cut the segmented flange preform 8. The cutting can be carried out along the Figure 14 preset cutting line 84 in the attachment. The structure remaining after cutting the segmented flange preform 8 is the segmented flange 3. After completion, check the flatness of the upper plane of the segmented flange 3 as a reference for the machining allowance for the finish machining of the segmented flange 3.

[0150] For the convenience of description, the manufacturing method of this application is introduced by taking two segmented flanges 3 as examples, namely flange section 31 and flange section 32. Correspondingly, the flange section 31 body 81 and flange section 32 body 82 remaining after cutting can be directly used as flange section 31 and flange section 32.

[0151] S32. Perform finish machining on the positioning flange 5, bottom flange 6, segmented flange 3, and top flange 1 until they reach the design dimensions.

[0152] Specifically, a numerically controlled vertical lathe is used to take the upper surface and inner hole of the positioning flange 5 as the reference, and also take into account the upper plane and outer circle allowance of the top flange 1, as well as the lower plane and outer circle allowance of the bottom flange 6, to finely process the upper plane of the positioning flange 5 and the inner hole dimension of the positioning flange 5. After completion, the entire assembly is flipped so that the lower plane of the bottom flange 6 faces upward, and the lower plane and outer circle dimension of the bottom flange 6 are finely processed; after completion, the entire assembly is flipped again so that the upper plane of the top flange 1 faces upward, and the inner side cylinder of each side wall flange 2 is finely processed; the upper plane of the segmented flange 3 is finely processed, while ensuring the product requirements of H1 and D1, and the inner circle of the segmented flange 3 is finely processed; the upper plane of the top flange 1 is processed, first ensuring the product requirement of H2, and then ensuring the total height of the entire assembly. After completion, the inner hole and outer circle dimensions of the top flange 1 are finely processed.

[0153] S33. Use a numerically controlled boring and milling machine to process the inner holes and end faces of each side wall flange 2 to the design dimensions on the drawing. After completing the dimension inspection, process the threaded holes on the end faces of each side wall flange 2 to ensure the hole depth and thread depth.

[0154] S34. Use a numerically controlled gantry boring machine in cooperation with an extended drill rod to process threaded holes for each segmented flange 3 and process the screw holes of the top flange 1. After completion, inspect the hole depth and thread depth to obtain the large thin-walled pressure vessel.

[0155] Among them, after obtaining the large thin-walled pressure vessel in step S34, the dimensional accuracy of the whole container is measured by a coordinate measuring machine. After the measurement meets the design requirements, the container product can be regarded as qualified.

[0156] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A reusable self-adaptive rounding flange inner support device, characterized in that: The device is used for the production of large thin-walled pressure vessels, and comprises a central driving member, a pull rod (14), a cam disc (13), and a support block (12). One end of the pull rod (14) is connected to the central driving member, and the other end is connected to the cam disc (13). The cam disc (13) is connected to the support block (12), and the cam disc (13) has an axis point. In the horizontal direction, the pull rod (14) is located between the connection point between the cam disc (13) and the support block (12) and the axis point of the cam disc (13). With the movement of the central driving member and the pull rod (14), the cam disc (13) is driven to rotate around the axis point, so that the support block (12) can move in a direction away from the device or in a direction close to the device.

2. A reusable self-adaptive rounding flange inner support device according to claim 1, characterized in that: The device comprises a base plate (15), the central driving member is arranged on the base plate (15), the cam turntable (13) is provided with a first hole (131), a second hole (133), and a connecting shaft (132), the cam turntable (13) is fixedly connected to the base plate (15) via the second hole (133), forming the axis point of the cam turntable (13); the cam turntable (13) is connected to the support block (12) via the first hole (131) in a detachable manner, and the cam turntable (13) is connected to the pull rod (14) via the connecting shaft (132).

3. A reusable self-adaptive rounding flange inner support device according to claim 2, characterized in that: The base plate (15) is a circular plate, the central driving member is arranged at the center of the base plate (15), at least two cam rotating discs (13) are arranged on the outer edge of the base plate (15) in the form of a circular array, and each cam rotating disc (13) is provided with a corresponding supporting block (12).

4. A reusable self-adaptive rounding flange inner support device according to claim 2, characterized in that: The center of the first hole (131) is denoted as f, the axis of the connecting shaft (132) is denoted as g, and the center of the second hole (133) is denoted as h. In the vertical projection direction of the cam disc (13), the distance between g and h is 1.1-1.4 times the distance between f and g, and the distance between f and h is 1.2-2 times the distance between f and g.

5. The reusable self-adaptive rounding flange inner support device according to claim 1, characterized in that: The central driving member comprises a motor (200), a reducer (201), a transmission shaft (17), and a transmission disc (16) which are connected in sequence, and the transmission disc (16) is connected to the pull rod (14).

6. The reusable self-adaptive rounding flange inner support device according to claim 1, characterized in that: The support block (12) is provided with a rotating shaft (121), and the rotating shaft (121) penetrates the first hole (131) of the cam rotating disk (13) in a detachable manner. The support block (12) can rotate relative to the cam rotating disk (13) along the axis of the rotating shaft (121).

7. The reusable self-adaptive rounding flange inner support device according to claim 1, characterized in that: The side of the support block (12) facing the inner wall of the cylindrical body (4) is recorded as a support surface (122), and the curvature of the support surface (122) is the same as the curvature of the inner wall of the cylindrical body (4) of the large thin-walled pressure vessel; the support surface (122) is provided with an avoidance opening (123).

8. The reusable self-adaptive rounding flange inner support device according to claim 2, characterized in that: The upper surface of the base plate (15) is provided with lifting ears (18), and the lifting ears (18) are arranged in a circular array along the center of the base plate (15).

9. The reusable self-adaptive rounding flange inner support device according to claim 2, characterized in that: A digital level (202) is provided on the upper surface of the substrate (15).

10. The reusable self-adaptive rounding flange inner support device according to claim 1, characterized in that: The device comprises a locking mechanism (19) for mechanically locking the central drive member.

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