Shell and lateral suspended flange double-ring cross welding seam welding positioning device

Abstract

The utility model discloses a shell and lateral suspension flange double-ring cross welding seam welding positioning device which is used for solving the problems that accurate positioning cannot be achieved when a dome shell and a lateral suspension flange double-ring cross welding seam are welded, and an upper flange face and a lower flange face are twisted due to the fact that welding force is too large. The welding gun ceramic nozzle positioning device comprises a positioning body which is a circular ring with four supporting legs, the four supporting legs are evenly distributed on one side of the circular ring, a plurality of threaded holes are formed in the other side of the circular ring, four welding gun ceramic nozzle containing grooves are formed among the four supporting legs, the first supporting leg and the second supporting leg are provided with welding seam vacancy grooves in the radial direction of the circular ring, and the first supporting leg and the second supporting leg are opposite to each other. The positioning body is adjacent to the third supporting leg, the fourth supporting leg and the third supporting leg are opposite, the positioning body is adjacent to the second supporting leg, the outer side of the first supporting leg and the outer side of the second supporting leg are each provided with a lifting threaded hole, the positioning body is divided into two parts through the connecting line of the third supporting leg and the fourth supporting leg along the direction perpendicular to the two lifting threaded holes, and the end faces of the first supporting leg, the second supporting leg, the third supporting leg and the fourth supporting leg are arc faces.

Description

Technical Field

[0001] The utility model belongs to the technical field of positioning devices, in particular to a double-ring cross-weld welding positioning device for a shell and a lateral suspended flange. Background Art

[0002] A shell with a sandwich is designed as a dome structure, and a suspended flange device is welded on the side of the shell. The weld is a double annular cross weld. The structure is as follows Figure 1 As shown in the figure, because there is no support underneath the suspended flange and no positioning platform at the weld groove between the shell and the suspended flange, the traditional welding process requires one person to manually hold the suspended flange and place a support block 5 between the shell and the suspended flange to position it before welding. This causes distortion of the suspended flange surface after welding, affecting subsequent product assembly.

[0003] This product has no support under the suspended flange, and there is no positioning platform at the welding groove between the shell and the suspended flange. After the support block 5 is placed between the shell and the suspended flange for positioning, the support block 5 tooling at the upper end of the suspended flange and the dome of the shell are spherical, and the welding stress is large at the arc starting position. The welding stress drags the upper end support block 5 along the spherical surface toward the top of the dome in the direction I, resulting in the distance from the flange surface to the center of the shell measured after welding not meeting the requirements of Drawing 125, and causing distortion of the upper and lower flange surfaces, affecting assembly positioning. Figure 2 shown. Utility Model Content

[0004] The purpose of the utility model is to provide a double-ring cross weld positioning device for the shell and the lateral suspended flange, which is used to solve the problem that the double-ring cross welds between the dome shell and the lateral suspended flange cannot be accurately positioned during welding, and the excessive welding stress causes the upper and lower flange surfaces to be distorted.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The cam is secured to a location where the four support legs are engaged and the four support legs are engaged, and the cam is secured to a location where the four support legs are engaged.

[0007] During use, both halves of the positioning body are simultaneously installed between the shell and the lateral suspended flange. Legs 1, 2, and 4 are in contact with the shell's column, while legs 1, 2, and 3 are in contact with the shell's dome. The other side of the circular ring is fastened to the lateral suspended flange with bolts passing through threaded holes. During welding, the porcelain nozzle of the welding gun is inserted through the nozzle receiving slot and the welding gun is inserted deep into the weld seam to weld the double-ring cross weld between the lateral suspended flange and the shell. After welding is completed, the circumferential weld between the shell's dome and the shell's column is welded. After all welding is completed, the shell is left to cool naturally. After cooling, the bolts between the positioning body and the suspended flange are removed, and the positioning device is removed by screwing the lifting ring into the lifting threaded hole.

[0008] Further preferably, the outer side of the welding gun porcelain nozzle accommodating groove is set to be chamfered, and the inner side is set to be a round hole, so as to facilitate the welding gun porcelain nozzle to smoothly extend into the welding position.

[0009] Further preferably, the number and positions of the threaded holes correspond one-to-one with the threaded holes of the suspended flange, thereby enhancing the connection strength between the positioning body and the suspended flange.

[0010] Further preferably, a chamfer is provided on the inner side of the other side of the ring.

[0011] Further preferably, the outer diameter of the ring is φ98 mm, the inner diameter is φ50 mm, and the specification of the threaded hole is M10-6H and 10 mm deep.

[0012] Further preferably, the diameter of the circular hole is φ15 mm.

[0013] Further preferably, the weld vacancy slot is 10 mm wide, 24 mm long and 6 mm deep.

[0014] This new device can accurately control the distance between the end face of the suspended flange and the center of the shell, control the amount of welding shrinkage, and solve the problem of distortion of the suspended flange surface after welding, thereby improving the welding qualification rate and ensuring the connection and assembly of certain products. In addition, manual positioning is not required during the welding process, which improves welding efficiency and ensures personnel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 Schematic diagram of the shell and lateral suspended flange structure.

[0018] Figure 2 A schematic diagram showing existing welding methods.

[0019] Figure 3 One of the schematic diagrams of the positioning body.

[0020] Figure 4 Schematic diagram of positioning body 2

[0021] Figure 5 Shows one of the schematic diagrams of the use of the utility model.

[0022] Figure 6 The second schematic diagram shows the use of the utility model.

[0023] Figure 7 The third schematic diagram shows the use of the present utility model.

[0024] In the figure: 1- welding gun porcelain nozzle receiving slot, 11- round hole, 21- support leg 1, 22- support leg 2,

[0025] 23-Support leg three, 24-Support leg four, 3-Welding seam vacant slot, 4-Pulling threaded hole, 5-Support block, 6-Threaded hole, I-Dome top direction. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0027] In the description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] The double-ring cross-weld welding positioning device for the shell and the lateral suspended flange includes a positioning body, which is a circular ring with four legs. The four legs are evenly distributed on one side of the circular ring, and a plurality of threaded holes 6 are provided on the other side of the circular ring. Four welding gun porcelain nozzle accommodating grooves 1 are provided between the four legs. The four legs are leg one 21, leg two 22, leg three 23 and leg four 24. Leg one 21 and leg two 22 are provided with weld vacant grooves 3 along the radial direction of the circular ring. Leg one 21 and leg two 22 are opposite to each other and are connected to the support leg. Leg 3 23 is adjacent to leg 3 23, while leg 4 24 is opposite leg 3 23 and adjacent to leg 2 22. Leg 1 21 and leg 2 22 each have a lifting threaded hole 4 on their outer sides. The positioning body is divided into two parts along a line perpendicular to the two lifting threaded holes 4 and connecting leg 3 23 and leg 4 24. The end faces of leg 1 21 and leg 2 22 mate with the arcuate surfaces contacting the dome and column of the housing, leg 3 23 mates with the arcuate surface contacting the dome of the housing, and leg 4 24 mates with the arcuate surface contacting the column of the housing. At the contact point with the housing, the legs are designed with arcuate surfaces adapted to the dome and column radii of the housing to mate with the housing.

[0031] The outer side of the welding gun porcelain nozzle accommodating groove 1 is set as a chamfer, and the inner side is set as a round hole 11, which facilitates the welding gun porcelain nozzle to smoothly extend into the welding position.

[0032] The number and positions of the threaded holes 6 correspond one-to-one with the threaded holes 6 of the suspended flange, thereby enhancing the connection strength between the positioning body and the suspended flange.

[0033] In the first embodiment, the heights of the first and second legs are 32 mm, the height of the third leg is 57 mm, and the height of the fourth leg is 26 mm.

[0034] In the second embodiment, a chamfer is provided on the inner side of the other side of the ring, such as Figure 1 As shown, there is a large chamfer on the rear side of the suspended flange end face, so setting the chamfer can make the ring more compatible with the suspended flange surface.

[0035] In the third embodiment, the outer diameter of the ring is φ98mm, the inner diameter is φ50mm, and the threaded hole 6 is M10-6H with a depth of 10mm. The outer diameter of the ring is consistent with the diameter of the suspended flange. When in use, the positioning body is connected to the suspended flange by bolts.

[0036] In the fourth embodiment, the height of the legs is designed according to the distance from the suspended flange surface to different parts of the shell. The height of the legs 1 21 and 22 is 32 mm, the height of the legs 3 23 is 57 mm, and the height of the legs 4 24 is 26 mm.

[0037] Example 5: While the minimum diameter of existing welding tips is φ6mm, the circular hole 11 of the porcelain tip receiving slot 1 in this embodiment has a diameter of φ15mm and features a 10*60° chamfer on the outside. During welding, the welding gun can pass through the porcelain tip receiving slot 1 to position the weld, avoiding interference with tooling. The weld seam vacant slot 3 is 10mm wide, 24mm long, and 6mm wide. During use, the weld seam vacant slot 3 on the positioning body clears the 4mm wide weld seam between the dome and the column of the housing, facilitating the flow of welding liquid to fuse the weld.

[0038] Example 6: The outer diameter of the positioning body is Φ98mm, which is consistent with the large plane diameter of the suspended flange. The inner diameter is Φ50mm, which is convenient for passing the Φ50mm pipe column at the rear end of the suspended flange during installation. The chamfer at the inner hole of the ring is 12.5×45°, which is convenient for avoiding such as Figure 1 The large chamfer between the end face of the suspended flange and the rear end pipe column is shown; 6 M10-6H 10mm deep threaded holes 6 are set on the other side of the ring, which correspond one to one with the 6 threaded holes 6 on the suspended flange. When in use, the positioning body can be connected to the suspended flange by bolts.

[0039] The heights of the four legs of the positioning body are designed based on the distance from the end face of the suspended flange to the center of the shell as required by the drawings, combined with the distance from the end face of the suspended flange to different parts of the shell. Furthermore, at the contact point with the shell, the arc surface is designed to fit the shell according to the radius of the shell dome and the radius of the shell column. Based on the minimum diameter of the welding gun porcelain nozzle of Φ6, a welding gun porcelain nozzle receiving groove 1 of Φ15 is designed, and the chamfer is 10×60°. During welding, the welding gun can enter the weld position through the welding gun porcelain nozzle receiving groove 1, avoiding interference from tooling. At the same time, a weld vacant groove 3 with a width of 10mm, a length of 24mm, and a width of 6mm is designed. The shell weld width is 4mm. When in use, the weld vacant groove 3 on the positioning body can leave the weld empty, facilitating the flow of welding liquid to fuse the weld.

[0040] The positioning body is designed with M4 lifting threaded holes 4 on the outer side of the support leg 1 21 and the support leg 2 22, so that the positioning body can be removed with a lifting ring after welding to avoid burns when removing it by hand after welding.

[0041] During use, the two halves of the positioning body are simultaneously installed between the shell and the suspended flange, with the arc surface fitting against the shell. The other side of the positioning body is fastened to the suspended flange with 6 M10 bolts. When welding, a Φ6 welding gun porcelain nozzle is selected. Through the welding gun porcelain nozzle receiving slot 1, the welding gun is inserted deep into the weld and the double-ring cross weld between the suspended flange and the shell is welded. After welding is completed, the circumferential weld between the shell dome and the shell column is welded; after all welding is completed, the shell is left to cool naturally. After cooling, the 6 M10 bolts are removed, and the positioning body is disassembled with a lifting ring. The distance from the end face of the suspended flange to the center of the shell is measured and it meets the requirements of the product drawing.

[0042] The utility model has an ingenious design structure and is easy to assemble and disassemble, and can perfectly solve the problem that the double-ring cross welds between the shell and the lateral suspended flange cannot be accurately positioned during welding, and excessive welding stress causes the upper and lower surfaces of the suspended flange to be distorted.

[0043] The above description is only a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions have been made with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments, and they should all be covered by the scope of protection of the claims.

Claims

1. The double-ring cross-weld welding positioning device between the shell and the lateral suspended flange is characterized by: The invention comprises a positioning body, wherein the positioning body is a ring with four legs, the four legs are evenly distributed on one side of the ring, the other side of the ring is provided with a plurality of threaded holes (6), four welding gun porcelain nozzle receiving grooves (1) are provided between the four legs, the four legs are arranged in sequence as leg one (21), leg three (23), leg two (22) and leg four (24), the leg one (21) and leg two (22) are provided with weld vacant grooves (3) along the radial direction of the ring, the leg one (21) and leg two (22) are positioned relative to each other, the legs are ... legs are provided with a plurality of threaded holes (6), four welding gun porcelain nozzle receiving grooves (1) are provided between the four legs, the legs are provided with a plurality of threaded holes (6), four welding gun porcelain nozzle receiving grooves (1) are provided between the four legs, the legs are provided with a plurality of threaded holes (6), four welding gun porcelain nozzle receiving grooves (1) are provided between the four legs, the legs are provided with a plurality of threaded holes (6), four welding gun porcelain nozzle receiving grooves (1) are provided between the four legs, the legs are provided with a plurality of threaded holes (6), four welding gun porcelain nozzle receiving grooves (1) are provided between the four legs, the legs are provided with a plurality of threaded The fourth leg (24) and the third leg (23) are positioned relative to each other, and a lifting threaded hole (4) is provided on the outer side of each of the first leg (21) and the second leg (22). The positioning body is divided into two parts along a line perpendicular to the two lifting threaded holes (4) and passing through the connecting line of the third leg (23) and the fourth leg (24). The end faces of the first leg (21) and the second leg (22) are adapted to the arc surface contacting the dome and the column of the shell, the third leg (23) is adapted to the arc surface contacting the dome of the shell, and the fourth leg (24) is adapted to the arc surface contacting the column of the shell.

2. The double-ring cross-weld welding positioning device for a shell and a lateral suspended flange according to claim 1 is characterized in that: The outer side of the welding gun porcelain nozzle accommodating groove (1) is configured as a chamfer, and the inner side is configured as a circular hole (11).

3. The double-ring cross-weld welding and positioning device for a shell and a lateral suspended flange according to claim 1 is characterized in that: The number and positions of the threaded holes (6) correspond one-to-one to the threaded holes (6) of the suspended flange.

4. The double-ring cross-weld welding and positioning device for a shell and a lateral suspended flange according to claim 1, characterized in that: A chamfer is provided on the inner side of the other side of the ring.

5. The double-ring cross-weld welding positioning device for a shell and a lateral suspended flange according to any one of claims 1 to 4, characterized in that: The outer diameter of the ring is φ98 mm, the inner diameter is φ50 mm, and the threaded hole (6) has a specification of M10-6H and a depth of 10 mm.

6. The double-ring cross-weld welding positioning device for a shell and a lateral suspended flange according to any one of claims 1 to 4, characterized in that: The weld vacancy slot (3) is 10 mm wide, 24 mm long and 6 mm deep.

7. The double-ring cross-weld welding and positioning device for a shell and a lateral suspended flange according to claim 2, characterized in that: The diameter of the circular hole (11) is φ15 mm.

Images