Flange shaping and welding device with conical opening structure

Abstract

The utility model discloses a flange shaping and welding device with a conical opening structure, a flange is provided with a conical opening piece and a flange ring which are coaxially welded and formed, and the shaping and welding device comprises a welding base connected with a flange hole in a positioning mode. The welding base is further provided with a positioning mechanism which is connected with the conical opening piece and drives the conical opening piece to be coaxially connected with the flange ring. Positioning columns which can be correspondingly arranged in the at least two flange holes in a penetrating mode and are of a conical structure are evenly distributed on the welding base in the circumferential direction, and the positioning mechanism is a conical column arranged in the middle of the welding base. According to the shaping welding device, the flange ring and the conical opening piece can be respectively and relatively axially positioned through the positioning column and the conical column which are arranged on the welding base, the problem that deviation exists when the product is welded at present can be solved, the pre-welding quality of the flange with the conical opening is guaranteed, and the welding operation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of flange welding with a tapered mouth structure, and in particular to a flange shaping welding device with a tapered mouth structure. Background Art

[0002] Flange is a disc-shaped part, which is common in pipeline engineering and usually used in pairs. In pipeline engineering, flange is mainly used for pipeline connection. For example, a flange is installed at each end of the two pipes to be connected (usually welding connection is more often used), and a sealing gasket is added between the two flanges and fastened with bolts to achieve pipeline connection.

[0003] As the instruction manual Figure 1 As shown in the figure, it is a common flange used for pipe connection structure. First, connect the flange to the pipe port, then pass the flanges on both sides through the flange holes on it, and use bolts to complete the pipe connection operation. In actual operation, when welding the flange to the pipe port, the flange needs to be welded coaxially with the pipe port, such as Figure 1 As shown, there will be axial deviation between the flange and the pipe mouth during operation, which will cause the ports to not correspond, affecting the welding strength and sealing.

[0004] At present, in order to solve the problem of deflection when welding the flange and the port, a flange with a tapered mouth structure is designed. When connected to the pipeline, the tapered mouth can be embedded in the pipe mouth, which can achieve relative positioning of the flange and the pipe mouth, achieve better coaxiality, and also facilitate welding operations and improve welding strength and sealing. When processing the tapered mouth flange, it is necessary to pre-weld the conventional flange ring and the tapered mouth piece first. During pre-welding, there is also the problem of axial offset between the tapered mouth piece and the flange ring (such as Figure 7 shown). Summary of the invention

[0005] In response to the above-mentioned problems, the present application aims to provide a flange shaping welding device with a tapered mouth structure, which realizes the separate and relative axial positioning of the flange ring and the tapered mouth piece, can solve the problem of offset when welding the product, ensure the pre-welding quality of the flange with a tapered mouth, and improve the efficiency of the welding operation.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is as follows: a flange shaping welding device with a conical mouth structure, the flange has a conical mouth piece and a flange ring formed by coaxial welding, and a flange hole is opened on the flange ring along the circumferential direction, characterized in that: the shaping welding device includes a welding base which is positioned and connected to the flange hole, and a positioning mechanism which is connected to the conical mouth piece and drives the conical mouth piece to be coaxially connected to the flange ring is also provided on the welding base.

[0007] Preferably, the welding base is evenly distributed along the circumferential direction with positioning columns of a conical structure which can be correspondingly inserted into at least two of the flange holes, and the inner diameter of the flange hole is between the outer diameters of both ends of the positioning columns.

[0008] Preferably, the positioning mechanism is a conical column arranged in the middle of the welding base, and the inner diameter of the small port of the conical mouth piece is between the outer diameters of both ends of the conical column.

[0009] Preferably, the bottom of each positioning column is threadedly connected to the welding base.

[0010] The beneficial effect of the present application is that the shaping welding device can realize the separate and relative axial positioning of the flange ring and the tapered mouth piece through the positioning column and the tapered column arranged on the welding base, which can solve the problem of offset when welding the product, ensure the pre-welding quality of the flange with a tapered mouth, and improve the welding operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a diagram showing the axial deflection in the current welding between the flange ring and the pipe body.

[0012] Figure 2 This is a diagram showing the welding formation of a flange with a tapered mouth structure in this application.

[0013] Figure 3 For this application Figure 2 Top view.

[0014] Figure 4 This is a diagram showing flange and pipe welding for this application.

[0015] Figure 5 This is a diagram of the split structure before flange welding for this application.

[0016] Figure 6 This is the flange circumferential welding diagram for this application.

[0017] Figure 7 The illustration shows the axial deflection during flange welding for this application.

[0018] Figure 8 This is a top view of the structure of the welding device for this application.

[0019] Fig. 9 This is a front view structural diagram of the welding device for this application.

[0020] Fig.10 This is a diagram showing the coaxial positioning of the flange ring and the tapered mouth piece achieved by the standardized welding device of this application.

[0021] Fig.11 This is a diagram of the rotatable and adjustable positioning column structure of the present application.

[0022] Fig.12 For this application Fig.11 Enlarged view of the structure at point A in the middle. DETAILED DESCRIPTION

[0023] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0024] See attached Figures 1 to 12 A flange shaping welding device with a conical mouth structure is shown, wherein the flange 1 has a conical mouth piece 11 and a flange ring 12 formed by coaxial welding, and a flange hole 12a is opened in the circumferential direction on the flange ring 12. In order to realize the coaxial positioning welding of the conical mouth piece 11 and the flange ring 12, the present application designs a shaping welding device, which includes a welding base 2 positioned and connected with the flange hole 12a, and the positioning function of the flange ring 12 is realized by connecting and positioning with the flange hole 12a.

[0025] A positioning mechanism connected to the conical mouth piece 11 and driving the conical mouth piece 11 to coaxially connect with the flange ring 12 is also provided on the welding base 2. On the basis of positioning the flange ring 12 by the welding base 2, since the positioning mechanism is provided on the welding base 2 and can position the conical mouth piece 11, the relative axial positioning of the flange ring 12 and the conical mouth piece 11 is achieved by the welding base 2 and the positioning mechanism, and the joint of the two can be welded in this positioned state, thereby ensuring the pre-welding quality of the flange with a conical mouth and improving the welding operation efficiency.

[0026] Specifically, Figure 8-10 As shown, the welding base 2 is evenly distributed along the circumference with positioning posts 21 of a conical structure that can be correspondingly inserted into at least two of the flange holes 12a. By sleeved more than two positioning posts 21 in corresponding different flange holes 12a, the rotation of the flange ring 12 can be solved and relative positioning can be effectively achieved. The positioning post 21 is set as a conical structure, so that the outer diameter of its top is small, which is convenient for the rapid insertion of the flange hole 12a, and preferably, the inner diameter of the flange hole 12a is between the outer diameters of the two ends of the positioning post 21, that is, the flange hole 12a is sleeved to the middle position on the positioning post 21 ( Fig.10 The state shown in the figure) is to avoid the problem of falling out from the top end or the problem of failing to achieve effective positioning when the outer diameter of the positioning column 21 fails to contact the inner wall of the flange hole 12a.

[0027] On the basis of realizing the axial positioning of the flange ring 12 as described above, in order to realize the rapid assembly and positioning of the tapered mouthpiece 11, as Figure 8-10As shown, the positioning mechanism is a conical column 22 arranged in the middle of the welding base 2, and is assembled with the above-mentioned flange ring 12. After the flange ring 12 is inserted into the positioning column 21 for positioning, the conical mouth piece 11 is then inserted from the top side of the conical column 22, and the inner diameter of the small port of the conical mouth piece 11 is set between the outer diameters of the two ends of the conical column 22, that is, the top port of the conical mouth piece 11 is contacted and supported in the middle position of the conical column 22. At the same time, it is preferably ensured that the lower end of the conical mouth piece 11 is connected to the surface of the flange ring 12 or a reserved welding gap is designed, and then the circumferential welding operation can be performed between the conical mouth piece 11 and the flange ring 22. After the welding is completed, it can be separated from the positioning column 21 and the conical column 22 on the welding base 2 as a whole.

[0028] In order to improve the welding strength, a gap is usually reserved at the welding point of the conical mouthpiece 11 and the flange ring 12 so that more welding materials can be integrated, thereby improving the welding strength of the two. Therefore, in order to control the welding gap between the conical mouthpiece 11 and the flange ring 12, as shown in FIG. Figure 11-12 As shown, the bottom of each positioning column 21 is threadedly connected to the welding base 2. By rotating the positioning column 21, the upper and lower positions of the flange ring 12 can be adjusted, thereby controlling the gap between the flange ring 12 and the conical mouthpiece 11 ( Fig.12 As shown in a in the figure, the welding strength of the two can be improved after welding.

[0029] In order to facilitate the circumferential welding operation, Figure 10-11 As shown, preferably, a rotating shaft seat 3 is further provided at the bottom of the welding base 2. After the conical mouth piece 11 and the flange ring 12 are coaxially matched as described above, by driving the welding base 2 to rotate, a rapid circumferential welding operation can be achieved.

[0030] The principle of the present application is: when welding a flange with a tapered mouth, first insert the flange hole 12a of the flange ring 12 into the positioning column 21 on the welding base 2, then put the tapered mouth piece 11 on the tapered column 22, and then rotate the positioning column 21 to adjust the welding gap between the flange ring 12 and the tapered mouth piece 11. After adjustment, the welding base 2 can be rotated to realize the circumferential welding operation, and after the welding is completed, it is separated from the welding base 2 as a whole upward.

[0031] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. A flange shaping welding device with a conical mouth structure, wherein the flange (1) has a conical mouth piece (11) and a flange ring (12) formed by coaxial welding, and a flange hole (12a) is opened on the flange ring (12) along the circumferential direction, characterized in that: The shaping welding device comprises a welding base (2) which is positioned and connected with the flange hole (12a), and a positioning mechanism which is connected with the conical mouth piece (11) and drives the conical mouth piece (11) to be coaxially connected with the flange ring (12) is also arranged on the welding base (2).

2. The shaping welding device according to claim 1, characterized in that: The welding base (2) is evenly distributed along the circumference with conical positioning columns (21) which can be correspondingly inserted into at least two flange holes (12a), and the inner diameter of the flange hole (12a) is between the outer diameters of the two ends of the positioning column (21).

3. The shaping welding device according to claim 2, characterized in that: The positioning mechanism is a conical column (22) arranged in the middle of the welding base (2), and the inner diameter of the small end of the conical mouthpiece (11) is between the outer diameters of both ends of the conical column (22).

4. The shaping welding device according to claim 3, characterized in that: The bottom of each positioning column (21) is threadedly connected to the welding base (2).

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