Cylinder welding tool and welding method

Abstract

The invention belongs to the technical field of metal processing and engineering structures, and particularly discloses a cylinder welding tool which comprises an annular plate and a partition plate, a through hole matched with a cylinder in shape is formed in the annular plate, and the inner side of the annular plate can abut against the side wall of the cylinder; the partition plate is located on the inner side of the column body, and a wedge block is inserted between the partition plate and the inner side wall of the column body. Deformation of the steel columns can be reduced in the construction process, and the influence on the structural precision and stability of the whole tower is avoided.

Description

Technical Field

[0001] The present invention relates to the technical fields of metal processing and engineering structures, and particularly relates to a column welding tooling and a welding method. Background Art

[0002] With the rapid development of modern industry, the performance requirements for various materials and components in engineering structures are getting higher and higher. In the nuclear power field, the nuclear power stainless steel tower is located inside the reactor building of the nuclear island. As an important supporting structure for the integrated top cover of the nuclear island reactor vessel, its performance and quality are directly related to the safe operation of the nuclear reactor and are of crucial importance.

[0003] During the construction process of the steel columns of the stainless steel tower, it is necessary to first weld the steel columns used to build the tower (mainly weld the web and flange of the steel column to form a rectangular steel column structure), and then build multiple complete steel columns formed by welding to form a tower structure. Generally, four steel columns are required, and the four steel columns are built in the form of a rectangular array to form a tower.

[0004] Traditional construction methods and toolings have many problems. For example, when the traditional tooling is connected to and hoisted with the steel column, the stability is insufficient, resulting in an unstable hoisting process, increasing the safety risk, and may also cause damage to the steel column, affecting its performance and quality. In addition, when welding the steel column, it is necessary to weld and turn over the steel column. However, in the welding and turning operations of the steel column, the traditional tooling is difficult to meet the requirements of high precision and high efficiency, and it is easy to deform the steel column, thus affecting the structural accuracy and stability of the entire tower. In addition, traditional toolings often cannot meet the special requirements of the steel columns of the stainless steel tower, such as avoiding contamination of the stainless steel and preventing corrosion. Summary of the Invention

[0005] The present invention provides a column welding tooling, aiming to reduce the deformation of the steel column during the construction process and avoid affecting the structural accuracy and stability of the entire tower.

[0006] The present invention is realized by the following technical solutions: A column welding tooling includes an annular plate and a partition plate. A through hole matching the shape of the column is opened on the annular plate, and the inner side of the annular plate can abut against the side wall of the column; the partition plate is located inside the column, and a wedge block is inserted between the partition plate and the inner side wall of the column.

[0007] Compared with the prior art, the present solution has the following advantages and beneficial effects:

[0008] When the tooling in this solution is in use, the ring plate is sleeved on the outside of the column body to support the column body. And during the welding process of the column body's weld seam, since the ring plate is circular, it is convenient to be flipped during the welding process, the operation is simpler and more labor-saving, and the construction efficiency can be improved. In addition, in this solution, a partition is arranged inside the column body, and the partition can play an internal support role for the column body. In this way, under the interaction with the ring plate, a more reliable and stable support effect can be provided for the column body. And in this application, a wedge block is inserted between the partition and the inner side wall of the column body, which can isolate and reinforce between the partition and the column body, effectively avoiding the loosening of the column body, strongly controlling the welding deformation of the column body during the construction process, curbing the tendency of the column body to twist, ensuring the stability during the use of the tooling, improving the welding quality of the column body, and thus avoiding affecting the structural accuracy and stability of the entire tower.

[0009] Further, lifting lugs holes are provided on both sides of the ring plate.

[0010] The setting of the lifting lugs holes is convenient for connecting with the lifting equipment to ensure the safety and stability during the lifting process.

[0011] Further, a plurality of through-welding holes are provided on the side wall of the through-hole of the ring plate, and the plurality of through-welding holes respectively correspond to the positions where the flange and the web of the column body are welded to each other.

[0012] In this solution, the setting of the through-welding holes can create a gap between the positions where the ring plate is welded to the flange and the web of the column body, thus avoiding the situation that after installing the ring plate, there is partial occlusion with the column body and not all the weld positions of the column body can be welded. The setting of the through-welding holes can ensure that after installing the ring plate, the positions to be welded between the flange and the web of the column body can still be effectively welded, thereby improving the welding quality and avoiding problems such as incomplete welding and insufficient welding.

[0013] Further, a fixing plate is movably arranged at the lower end of the ring plate. The top end of the fixing plate is an arc surface matching the ring plate, and the bottom end of the fixing plate is a plane.

[0014] In this solution, the setting of the fixing plate can play a supporting and limiting role during the welding process of the column body, enabling the column body to maintain a stable state during welding and facilitating the welding operation.

[0015] Further, the ring plate includes a left ring plate and a right ring plate which are symmetrically arranged, and the left ring plate and the right ring plate are spliced and fixed to each other.

[0016] The ring plate in this solution includes a left ring plate and a right ring plate. Compared with making the ring plate as a whole, the left ring plate and the right ring plate in this solution are spliced with each other, which is more convenient for installation and disassembly.

[0017] Further, connecting plates are detachably connected to the upper and lower parts of the ring plate, and the left ring plate and the right ring plate are detachably connected through the connecting plates.

[0018] In this solution, the upper and lower parts of the ring plate are detachably connected through the connecting plates, and the connection method is stable and reliable, and it is convenient to disassemble.

[0019] Further, a spacer plate is inserted between the outer side wall of the ring plate and the column body, and the materials of the spacer plate and the wedge block are the same as the material of the column body.

[0020] In this solution, the setting of the spacer plate and the wedge block can tightly fill the gaps between the ring plate and the column body and between the partition plate and the column body, so that when turning over, it can prevent loosening between the ring plate and the partition plate and the column body, resulting in the column body not being able to accurately rotate with the tooling; in addition, in this solution, the materials of the spacer plate and the wedge block are the same as the material of the column body, so that the spacer plate can play a role in protecting the column body and can avoid the column body being contaminated and corroded by direct contact with the partition plate and the ring plate.

[0021] Further, wedge block grooves are provided on both sides of the partition plate, and the wedge blocks can be inserted into the wedge block grooves.

[0022] In this solution, the setting of the wedge block grooves is convenient for cooperating with the wedge blocks and plays a role in positioning the positions of the wedge blocks, ensuring that the wedge blocks can more stably fasten the partition plate and the column body.

[0023] Further, a handle is fixedly connected to one end of the partition plate.

[0024] In this solution, the handle fixedly connected to the partition plate makes it more convenient to install and disassemble the partition plate in the column body.

[0025] A method for welding a column body, using the above-mentioned column body welding tooling, includes the following steps:

[0026] Assemble two flange plates and two web plates used to form the column body into a rectangular column body structure, and insert a plurality of partition plates into the assembled column body;

[0027] Install a plurality of ring plates at intervals on the outside of the column body in sequence, and insert wedge blocks between the partition plate and the column body for fastening; after the assembly is completed, then hoist the column body to the working area, and support it with a fixing plate at the lower part of the ring plate;

[0028] Then, weld and fix the weld seam between the column flange and the web. When welding, flat welding is adopted. After welding every two weld seams, remove the fixing plate, turn the column over, place the fixing plate under the ring plate, and then weld the two weld seams on the other side of the column; after welding each weld seam of the column by repeatedly turning the column over, take out the partition plate inside the column, and finally weld the column bottom plate and the column top plate at both ends of the welded column respectively.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1) It can improve construction safety: The precise lifting lug holes and firm connection methods reduce the safety risks of workshop hoisting and reduce the unstable factors during hoisting.

[0031] 2) It can improve construction efficiency: The setting of the ring plate in the present invention can increase the rolling and turning function during the welding process, and this rolling and turning function can effectively improve the welding efficiency of the steel column.

[0032] 3) It can ensure the quality of the steel column: The setting of the ring plate and the partition plate in the present invention, as well as the setting of the backing plate between the ring plate and the column body and the wedge block between the partition plate and the column body, can effectively control the welding deformation, prevent damage to the steel column, ensure the performance and quality of the steel column, and thus improve the structural accuracy and stability of the entire tower formed by the mutual lap joint of multiple steel columns in the later stage.

[0033] 4) It can meet special requirements: The materials of the isolation backing plate and the wedge block in the present invention are the same as those of the column body, which can avoid contaminating the column body, prevent corrosion, and can meet the special requirements of the tower steel column. Description of the Drawings

[0034] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0035] Figure 1 is a perspective view of an embodiment of a column welding tooling of the present invention;

[0036] Figure 2 is a right view of an embodiment of a column welding tooling of the present invention;

[0037] Figure 3 is a front view of an embodiment of a column welding tooling of the present invention;

[0038] Figure 4 is a perspective view of installing the column bottom plate and the column top plate at both ends of a column in an embodiment of a column welding tooling of the present invention.

[0039] Marks in the drawings and corresponding component names:

[0040] Ring plate 1, through-welding hole 101, connecting plate 2, lifting lug hole 3, partition plate 4, handle 5, wedge block 6, isolation backing plate 7, fixing plate 8, column body 9, web 91, flange 92, anti-corrosion paint layer 10, column bottom plate 11, column top plate 12. Specific implementation mode

[0041] To make the purpose, technical solution and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with embodiments and drawings. The illustrative implementation modes of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0042] As Figure 1 - Figure 2 shown, as an embodiment of the present application, this embodiment provides a column welding tooling, including a ring plate 1 and a partition plate 4. A through-hole matching the shape of the column body 9 is opened on the ring plate 1. In this embodiment, the column body 9 is a cuboid columnar structure, the shape of the through-hole on the inner side of the ring plate 1 is rectangular, the column body 9 in this embodiment is a stainless steel column, and the inner side of the ring plate 1 can abut against the side wall of the column body 9; the partition plate 4 is located inside the column body 9, and a wedge block 6 is inserted between the partition plate 4 and the inner side wall of the column body 9.

[0043] In this embodiment, the column body 9 includes two flanges 92 and two webs 91. The two flanges 92 and the two webs 91 are spliced with each other to form a rectangular column body 9 structure. The junction of the two flanges 92 and the two webs 91 is the weld position that needs to be welded. After welding the four welds formed by the two flanges 92 and the two webs 91, the two flanges 92 and the two webs 91 can be welded and fixed to each other to form a complete column body 9 structure.

[0044] As Figure 3 shown, chamfers are provided on both sides of the web 91 of the column body 9, so that a weld is reserved between the web 91 and the flange 92, which is convenient for later welding and fixing.

[0045] As Figure 3 shown, in this embodiment, four through-welding holes 101 are opened on the side wall of the through-hole of the ring plate 1. The four through-welding holes 101 respectively correspond to the four positions where the flange 92 and the web 91 of the column body 9 are welded to each other, that is, the four through-welding holes 101 are respectively located at the four right angles on the inner side of the ring plate 1, corresponding to the four right-angle welding positions of the column body 9. The setting of the through-welding holes 101 can avoid the situation that the ring plate 1 blocks the weld position and causes unable to weld.

[0046] In this embodiment, a fixing plate 8 is movably arranged at the lower end of the annular plate 1. The top end of the fixing plate 8 is an arc surface that matches the annular plate 1, and the bottom end of the fixing plate 8 is a plane. In this way, the adaptability between the top end of the fixing plate 8 and the annular plate 1 is better, and it fits the annular plate 1 more closely. The bottom end of the fixing plate 8 is a plane, so the support for the annular plate 1 is more stable. The fixing plate 8 in this embodiment can be directly placed at the lower end of the annular plate 1 to support the annular plate 1. In another embodiment, a groove can be opened on the top arc surface of the fixing plate 8, and the annular plate 1 can be inserted into the groove. In this way, the cooperation between the fixing plate 8 and the annular plate 1 is more stable, the limit for the annular plate 1 is better, and the annular plate 1 is less likely to slip.

[0047] Returning to this embodiment, two fixing plates 8 are provided at the lower part of each annular plate 1. The two fixing plates 8 symmetrically support the two sides of the lower end of the annular plate 1 respectively. In this way, the support for the annular plate 1 and the column 9 can be further improved. When welding the column 9, the fixing plate 8 can play a stable supporting role to ensure the welding accuracy.

[0048] In this embodiment, the annular plate 1 includes a left annular plate and a right annular plate that are symmetrically arranged. The left annular plate and the right annular plate are spliced and fixed to each other. Connecting plates 2 are detachably connected to the upper and lower parts of the annular plate 1. The left annular plate and the right annular plate are detachably connected through the connecting plate 2. Specifically: the left and right parts of the connecting plate 2 are detachably connected and fixed to the left annular plate and the right annular plate respectively by bolts.

[0049] When installing the annular plate 1 on the column 9 in this embodiment, by fitting the left annular plate and the right annular plate together on the outside of the column 9, and then using two connecting plates 2 to be installed on the upper and lower parts of the annular plate 1 respectively, and connecting and fixing them with bolts, a complete annular plate 1 structure is formed. In this embodiment, the design of the left annular plate and the right annular plate makes the overall installation of the annular plate 1 simpler, more convenient, firmly installed, easy to disassemble, and reusable.

[0050] In this embodiment, a spacer plate 7 is inserted between the outer side wall of the annular plate 1 and the column 9. Specifically: as Figure 3 shown, in this embodiment, wedge block 6 grooves are opened on both sides of the partition plate 4, and two wedge block 6 grooves are opened on both sides of the partition plate 4. The two wedge block 6 grooves are located at the upper and lower parts of the partition plate 4 respectively. The number of wedge blocks 6 in each tooling is four, and every two wedge blocks 6 are a group. The two wedge blocks 6 in the two groups of wedge blocks 6 are respectively located in the two wedge block 6 grooves on each side of the partition plate 4; in addition, two spacer plates 7 are provided in each tooling, and the two spacer plates 7 are respectively located between the two sides of the column 9 and the inner side of the annular plate 1.

[0051] In this embodiment, two sets of wedge blocks 6 are respectively inserted into the gaps between the two sides of the partition plate 4 and the inner side of the column body 9, and the isolation cushion blocks are inserted into the gap between the ring plate 1 and the outer side of the column body 9. By tightening the wedge blocks 6, the gap between the isolation backing plate 7 and the column body 9 can be further tightened, so as to prevent loosening between the tooling and the column body 9 during turning over, and thus the column body 9 cannot be accurately turned over along with the tooling.

[0052] The materials of the isolation backing plate 7 and the wedge blocks 6 are the same as that of the column body 9; in this embodiment, the ring plate 1 and the connecting plate 2 are both processed from Q355B steel plates, which have high material strength and can ensure the strength and stability of the tooling; the wedge blocks 6, the isolation backing plate 7, the partition plate 4 and the fixing plate 8 are all processed from S32101 (duplex stainless steel material) steel plates, and one end of the wedge block 6 is provided with a 30° groove.

[0053] In this embodiment, the materials of the wedge blocks 6, the isolation backing plate 7, the partition plate 4 and the fixing plate 8 are the same as that of the column body 9, all of which are stainless steel materials, which can ensure that the parts where the tooling and the column body 9 are in contact with each other will not be corroded and polluted, and ensure the quality requirements of the column body 9. The settings of the wedge blocks 6 and the isolation backing plate 7 can play an effective role in isolation and reinforcement, effectively prevent loosening, and control the welding deformation.

[0054] In this embodiment, an anti-corrosion paint layer 10 is sprayed on the surface of the ring plate 1. Specifically: the surface of the ring plate is treated with SPHSEN high-solid self-priming liquid epoxy paint (B03 gray) to form the anti-corrosion paint layer 10, which can further prevent pollution to the stainless steel column 9 body.

[0055] As an embodiment of the present application, as Figure 1 and Figure 3 shown, one end of the partition plate 4 is fixedly connected with a handle 5. The material of the handle 5 is also made of S32101 steel plate bent from the same material as the partition plate 4, and the handle 5 and the partition plate 4 are fixed by screws. The setting of the handle 5 facilitates pulling the partition plate 4 when installing and removing the partition plate 4 inside the column body 9.

[0056] As an embodiment of the present application, as Figure 1 shown, in this embodiment, lifting lugs 3 are provided on both sides of the ring plate 1. Specifically, the lifting lugs 3 are symmetrically provided on the left ring plate and the right ring plate of the ring plate 1. The setting of the lifting lugs 3 facilitates hoisting.

[0057] When the tooling of the present application is used, the number of toolings can be adaptively selected according to the height of the column body 9 to be welded. Multiple toolings are installed on the column body 9 at a certain interval. In practice, the volume of the column body 9 is large, and personnel can enter the inside of the column body 9 to install the partition plate 4.

[0058] As another embodiment of the present application, in view of the many structural characteristics of the stainless steel tower column 9, such as high processing precision requirements, large dimension control difficulty, high welding technology requirements, large welding deformation control difficulty, and high finished product protection requirements, it is necessary to design 5 sets of the ring plates 1 of the present application and multiple sets of partition plates 4 for assembly at the same time. Each set of tooling includes the ring plate 1 assembled by the left ring plate and the right ring plate. In order to avoid contaminating the column body 9 of stainless steel, the surface of the ring plate 1 is treated with SPHSEN high-solid self-bottom oil-based epoxy paint (B03 gray).

[0059] Since there is no transverse diaphragm designed inside this box column, in order to prevent deformation during welding, when assembling the flange 92 and the web 91 in each column body 9, multiple temporary partition plates 4 need to be added inside. The multiple partition plates 4 are arranged in sequence at an interval of 1 m, and their sizes are set in combination with the inner diameter of the column body 9.

[0060] Two wedge block 6 grooves are opened on each of the left and right sides of the partition plate 4. During the manufacturing process, the cross-sectional size and welding deformation of the box column body 9 are controlled by adjusting the position of the wedge block 6 in the wedge block 6 groove.

[0061] This embodiment discloses a welding method for the column body 9, which uses a column welding tooling in any one of the above embodiments and includes the following steps:

[0062] On the existing assembly jig, assemble the two flanges 92 and the two webs 91 used to form the column body 9 into a rectangular column body 9 structure, and insert multiple partition plates 4 into the assembled column body 9;

[0063] Use multiple ring plates 1 to be installed at intervals on the outside of the column body 9 in sequence. Insert isolation pads 7 between the two sides of the through holes of the ring plate 1 and the outside of the column body 9, and insert wedge blocks 6 between the partition plate 4 and the column body 9 for fastening to strengthen the fastening between the isolation pad 7, the ring plate 1 and the column body 9; after the assembly is completed, then insert through the two lifting lug holes 3 on the ring plate 1 with a sling, lift the column body 9 from the assembly jig to the working area, and support and fix it with a fixing plate 8 at the lower part of the ring plate 1 to prevent the ring plate 1 from rotating during welding and affecting the welding operation;

[0064] Then, the weld between the flange 92 of the column 9 and the web 91 is welded and fixed. The column 9 in this embodiment has four welds, which are respectively located at the four corners of the column 9. In order to ensure the welding quality and reduce the welding difficulty, flat welding is adopted during welding. After welding two welds (that is, welding the left and right welds on the upper part of the column 9), the fixing plate 8 is removed, and the column 9 is turned 180° (at this time, the left and right welds on the lower part of the column 9 are turned upward for easy welding), and then the fixing plate 8 is placed under the ring plate 1, and then the two welds on the other side of the column 9 are welded; four people are used for symmetrical welding during welding, that is, two people on each side of the steel column 9. During the process, attention is paid to the welding deformation trend in a timely manner, and reinforcement wedges 6 and other methods are used in a timely manner for rigid fixation to control welding deformation;

[0065] After welding each weld of the column 9 by repeatedly turning over the column 9, the partition 4 in the column 9 is taken out to ensure that there is no foreign matter in the main body, the area is kept clean, and has concealed conditions. Figure 4 As shown, finally, the column bottom plate 11 and the column top plate 12 are welded at both ends of the welded column 9 respectively. In order to ensure the welding quality and reduce the welding difficulty, the column bottom plate 11 and the column top plate 12 are also welded by flat welding, and the welding turning process is the same as the above steps.

[0066] After the nondestructive testing of welding is completed, each welded column 9 is hoisted to the assembly frame, and the ring plates 1 are removed after they are in place. When removing the ring plates 1, the bolts on the connecting plates 2 are removed to separate the connecting plates 2 from the left and right ring plates, and the ring plates 1 can be removed.

[0067] The tooling of the present invention is easy to operate, can effectively ensure the manufacturing accuracy of the stainless steel tower steel column 9, and make the outer dimensions of the stainless steel tower steel column 9 meet the requirements. At the same time, the tooling form has a simple structure, can be reused, has a wider range of applications, can improve the efficiency of mass production of components, solve the problem of welding deformation of the thickened plate of the complex box-shaped stainless steel tower steel column 9, and thus ensure the structural accuracy and stability of the stainless steel tower steel column 9. The present invention can reduce costs, and reasonable material selection and design greatly reduce construction costs.

[0068] It should be noted that the above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the present application. Various modifications to these embodiments will be apparent to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A column welding tool, characterized in that: It includes a ring plate and a partition plate. The ring plate is provided with a through hole matching the shape of the column. The inner side of the ring plate can abut against the side wall of the column. The partition plate is located inside the column, and a wedge block is inserted between the partition plate and the inner wall of the column.

2. A column welding tool according to claim 1, characterized in that: Both sides of the ring plate are provided with hanging ear holes.

3. A column welding tool according to claim 1, characterized in that: A plurality of through-welding holes are provided on the through-hole side wall of the ring plate, and the plurality of through-welding holes respectively correspond to the positions where the flange and the web of the column are welded to each other.

4. A column welding tool according to claim 1, characterized in that: A fixing plate is movably arranged at the lower end of the ring plate, the top end of the fixing plate is an arc surface matching the ring plate, and the bottom end of the fixing plate is a plane.

5. A column welding tool according to any one of claims 1 to 4, characterized in that: The ring plate comprises a left ring plate and a right ring plate which are symmetrically arranged with each other, and the left ring plate and the right ring plate are spliced ​​and fixed with each other.

6. A column welding tool according to claim 5, characterized in that: The upper part and the lower part of the ring plate are detachably connected with a connecting plate, and the left ring plate and the right ring plate are detachably connected through the connecting plate.

7. The column welding tool according to claim 1, characterized in that: An isolation pad is inserted between the ring plate and the outer side wall of the column, and the material of the isolation pad and the material of the wedge block are the same as that of the column.

8. The column welding tool according to claim 1, characterized in that: Wedge block grooves are provided on both sides of the partition plate, and the wedge blocks can be inserted into the wedge block grooves.

9. The column welding tool according to claim 1, characterized in that: One end of the partition is fixedly connected with a handle.

10. A column welding method, characterized in that: Using a column welding tool as described in any one of claims 1 to 9 comprises the following steps: Assembling two flanges and two webs for constituting a column into a rectangular column structure, and inserting a plurality of partitions into the assembled column; Use multiple ring plates to be installed on the outside of the column in sequence, and insert wedges between the partitions and the column for fastening; after the assembly is completed, the column is hoisted to the working area, and a fixed plate is used to support it at the bottom of the ring plate; Then the weld between the column flange and the web is welded and fixed. Flat welding is adopted. After welding two welds, the fixing plate is removed, the column is turned over, and the fixing plate is placed under the ring plate. Then the two welds on the other side of the column are welded. After welding each weld of the column by repeatedly turning the column over, the partition inside the column is taken out, and finally the column bottom plate and column top plate are welded at both ends of the welded column respectively.

Images