A ship acute angle welding structure and a welding method thereof

Abstract

The present application provides a kind of acute angle welding structure and its welding method, the acute angle welding structure includes first splice plate and second splice plate, and first acute angle plate and second acute angle plate, intermediate transition plate;The edge of the second splice plate is aligned with the first splice plate;The one side of the splice part of the first splice plate and the second splice plate is inserted into the acute angle end of the first acute angle plate;The other side of the splice part of the first splice plate and the second splice plate is inserted into the acute angle end of the second acute angle plate;The intermediate transition plate is arranged in the center hole of the central position enclosed by the first splice plate and the second splice plate, and the first acute angle plate and the second acute angle plate.By converting its acute angle less than a certain angle into a welding joint with larger angle, stress concentration is reduced, which helps to solve the subsequent work such as detection required in the acute angle intersection welding in the prior art, resulting in the technical problem of higher cost of the welding structure and method in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding, in particular to a ship acute angle welding structure and a welding method thereof. BACKGROUND

[0002] The plate joint and the plate joint angle, the plate joint and the structure angle less than 90 degrees cannot be avoided in the ship structure. There are three types of plate joints, large joints, angle joints and ordinary plate joints. The structure is divided into two cases, the main structure and the secondary structure. The main structure includes plates (including bulkhead plates, platform plates, outer plate plates, inner shell plates, etc.), strong beams that provide steel support. The secondary structure includes flat iron, elbow plate and bone material on the plate. The larger the angle between the plate joint and the structure and the angle between the plate joint and the plate joint, the smaller the length of the weld overlap. However, since the adjustment of large joints and angle joints will greatly affect the situation, and the structure arrangement is fixed. It is generally difficult to adjust. This situation occurs more in ship lines with complex lines, bow and stern of the ship. In order to ensure the strength, the structure needs to be reduced for detection, and a new structure needs to be designed.

[0003] Therefore, there is an urgent need for a ship acute angle welding structure to help solve the technical problem of high cost of the welding structure and method in the prior art due to the need for detection and other follow-up work at the acute angle intersection. SUMMARY

[0004] In an embodiment, the present application provides a ship acute angle welding structure, which converts the acute angle less than a certain angle into a welding joint with a larger angle by changing the structure, reduces stress concentration, and helps to solve the technical problem of high cost of the welding structure and method in the prior art due to the need for detection and other follow-up work at the acute angle intersection.

[0005] The ship acute angle welding structure includes a first spliced plate, a second spliced plate, a first acute angle plate, and a second acute angle plate, and an intermediate transition plate.

[0006] The second spliced plate is aligned with the edge of the first spliced plate.

[0007] One side of the spliced part of the first spliced plate and the second spliced plate is inserted into one end of the acute angle of the first acute angle plate.

[0008] The other side of the spliced part of the first spliced plate and the second spliced plate is inserted into one end of the acute angle of the second acute angle plate.

[0009] The intermediate transition plate is arranged in the center hole of the enclosed middle part of the first spliced plate and the second spliced plate, and the first acute angle plate and the second acute angle plate.

[0010] In an embodiment, the first acute angle and the second acute angle are less than 15 degrees.

[0011] In an embodiment, the first splice plate and the second splice plate are 30mm or 15mm.

[0012] In an embodiment, the center hole is a circular hole with a diameter greater than 300mm or a square hole with a side length greater than 300mm.

[0013] In an embodiment, the present application also provides a welding method for the acute angle welding structure, based on the acute angle welding structure, the welding method for the acute angle welding structure comprises:

[0014] Welding along the joints of the intermediate transition plate and the first splice plate, the second splice plate, the first acute angle plate, and the second acute angle plate.

[0015] In an embodiment, the acute angle structure is used for large joints and corner joints.

[0016] In an embodiment, the acute angle structure is located at the bow and stern of the ship.

[0017] In an embodiment, a CO2 welding groove is opened at the break. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a schematic diagram of the top view of the simulated welding seam overlap structure of the 30mm plate joint with a 45-degree groove in an embodiment of the present application;

[0019] Figure 2 Fig. 2 is a schematic diagram of the front view of the simulated welding seam overlap structure of the 30mm plate joint with a 45-degree groove in another embodiment of the present application;

[0020] Figure 3 Fig. 3 is a schematic diagram of the top view of the simulated welding seam overlap structure of the 15mm plate joint with a 45-degree groove in another embodiment of the present application;

[0021] Figure 4 Fig. 4 is a schematic diagram of the front view of the simulated welding seam overlap structure of the 15mm plate joint with a 45-degree groove in another embodiment of the present application;

[0022] Figure 5 Fig. 5 is a schematic diagram of the structure before the center hole is opened in another embodiment of the present application;

[0023] Figure 6 Fig. 6 is a schematic diagram of the structure after the center hole is opened in another embodiment of the present application.

[0024] REFERENCE NUMERALS

[0025] First splice plate 1

[0026] Second splicing panel 2

[0027] First Acute Angle Plate 3

[0028] Second acute angle plate 4

[0029] Intermediate transition plate 5

[0030] Center hole 6 Specific implementation examples:

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0033] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0034] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0035] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0036] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.

[0037] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0038] Figure 1 This is a top view of a simulated weld overlap structure with a 45-degree bevel at the joint of a 30mm plate in one embodiment of the present invention. Figure 2This is a front view schematic diagram of the simulated weld overlap structure with a 45-degree bevel at the joint of a 30mm plate in another embodiment of the present invention. Figure 3 This is a top view of a simulated weld overlap structure with a 45-degree bevel at the joint of a 15mm plate, as shown in another embodiment of the present invention. Figure 4 This is a front view schematic diagram of the simulated weld overlap structure with a 45-degree bevel at the joint of a 15mm plate in another embodiment of the present invention. Figure 5 This is a schematic diagram of the structure before the center hole of the acute angle weld overlap is opened in another embodiment of the present invention; Figure 6 This is a schematic diagram of the structure after the center hole of the acute angle weld overlaps in another embodiment of the present invention.

[0039] like Figures 1 to 2 As shown, in one embodiment, the present invention provides a ship acute angle welding structure, the ship acute angle welding structure including a first splicing plate 1, a second splicing plate 2, a first acute angle plate 3, a second acute angle plate 4, and an intermediate transition plate 5;

[0040] The second splicing panel 2 is aligned with the edge of the first splicing panel 1;

[0041] One side of the splicing part of the first splicing plate 1 and the second splicing plate 2 is inserted into the acute angle end of the first acute angle plate 3;

[0042] The other side of the splicing part of the first splicing plate 1 and the second splicing plate 2 is inserted into the acute angle end of the second acute angle plate 4;

[0043] The intermediate transition plate 5 is disposed in the center hole 6 at the middle position of the first splicing plate 1, the second splicing plate 2, the first acute angle plate 3, and the second acute angle plate 4.

[0044] This embodiment provides a specific implementation of a ship's acute-angle welded structure. Some products use this design, while others do not. By fully utilizing this design, assuming a ship has five locations with overlapping acute-angle welds requiring additional flaw detection, five fewer construction instructions or five fewer additional flaw detection procedures can be issued. This helps solve the technical problem in existing technologies where welding at acute-angle intersections requires flaw detection and other subsequent work, leading to higher costs for existing welding structures and methods.

[0045] In one embodiment, the first acute angle 3 and the second acute angle 4 are less than 15 degrees.

[0046] This embodiment provides an acute angle range.

[0047] In one embodiment, the first splicing plate 1 and the second splicing plate 2 are 30 mm or 15 mm.

[0048] This embodiment provides a specific implementation of the thickness of the first splicing plate 1 and the second splicing plate 2. The reason for the numerous welding defects: When the minimum acute angle of the plate seam is 15 degrees, the weld overlap length is simulated. Simulations are performed for 30mm and 15mm thick plates, respectively, with a CO2 beveling technique and a 15-degree plate seam angle. The 30mm thick plate will produce a weld overlap length of approximately 182mm. The 15mm thick plate will produce a weld overlap length of approximately 91mm.

[0049] In one embodiment, the central hole 6 is a circular hole or a square hole, wherein the diameter of the circular hole is greater than 300 mm and the side length of the square hole is greater than 300 mm.

[0050] This embodiment provides a specific structural implementation and specific dimensions of the central hole 6.

[0051] In one embodiment, the present invention also provides a welding method for a ship acute-angle welded structure, the welding method for the ship acute-angle welded structure comprising:

[0052] Welding is performed along the joints of the intermediate transition plate 5 and the first splicing plate 1, the second splicing plate 2, the first acute angle plate 3, and the second acute angle plate 4.

[0053] This embodiment provides a specific implementation of a welding method for a ship's acute-angle welded structure. A circular or square hole is provided in the overlapping area of ​​the welds. The diameter of the circular hole is ≥300mm, and the length of any side of the square hole is ≥300mm, thus breaking the acute-angle weld. The acute angle formed by the intersecting welds is changed, altering the weld direction. A patch plate is installed and welded within the provided hole, inserting a plate that meets the specifications and has a length and width greater than 300x300mm, changing the acute angle formed by the weld to greater than 15 degrees.

[0054] In one embodiment, the acute-angled structure is used at large joints and corner joints.

[0055] This embodiment provides a specific implementation method for the application location of the aforementioned acute-angled ship structure.

[0056] In one embodiment, the acute-angle structure is located at the bow and stern of the vessel.

[0057] This embodiment provides a specific implementation method in which the acute-angle structure of the ship is set at a specific location on the ship.

[0058] In one embodiment, a carbon dioxide welding bevel is formed at the breach.

[0059] This embodiment provides a specific implementation method for simulating bevel welding at the break.

[0060] Beneficial effects:

[0061] 1. Reduce the number of weld inspection procedures that are added due to weld overlap.

[0062] 2. Eliminate welding defects caused by overlapping welds.

[0063] 3. The weld is aesthetically pleasing.

[0064] 4. Reduce the time required for segmented inspections.

[0065] 5. Shorten the shipbuilding cycle.

[0066] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A ship acute-angle welded structure, characterized in that, The ship's acute-angle welded structure includes: First splicing plate (1); A second splicing plate (2) is aligned with the edge of the first splicing plate (1); A first acute angle plate (3), one side of the splicing part of the first splicing plate (1) and the second splicing plate (2) is inserted into the acute angle end of the first acute angle plate (3); A second acute angle plate (4), the other side of the splicing part of the first splicing plate (1) and the second splicing plate (2) is inserted into the acute angle end of the second acute angle plate (4); An intermediate transition plate (5) is provided in the center hole (6) at the middle position enclosed by the first splicing plate (1), the second splicing plate (2), the first acute angle plate (3), and the second acute angle plate (4); The acute angle between the first acute angle plate (3) and the second acute angle plate (4) is less than 15 degrees; The first splicing plate (1) and the second splicing plate (2) are 30 mm or 15 mm; The central hole (6) is either a round hole or a square hole, wherein the diameter of the round hole is greater than 300 mm and the side length of the square hole is greater than 300 mm.

2. A welding method for a ship's acute-angle welded structure, characterized in that, Based on the ship acute-angle welded structure as described in claim 1, the welding method of the ship acute-angle welded structure includes: Welding is performed along the joints of the intermediate transition plate (5) and the first splicing plate (1), the second splicing plate (2), the first acute angle plate (3), and the second acute angle plate (4).

3. The welding method for the acute-angle welded structure of a ship according to claim 2, characterized in that, The acute-angle welded structure is used for large joints and corner joints.

4. The welding method for the ship's acute-angle welded structure according to claim 3, characterized in that, The acute-angle welded structures are located at the bow and stern of the ship.

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