Butt welding flange of pressure vessel

Abstract

The utility model relates to the field of butt welding flanges, and discloses a pressure vessel butt welding flange which comprises a pressure vessel pipeline and a butt welding flange body, and an aligning mechanism used for limiting the butt welding flange body is arranged on the pressure vessel pipeline. The aligning mechanism comprises an arc-shaped piece, an abutting screw rod, a guide limiting rod, a connecting column, an inserting rod, a positioning rod and a lead screw, the abutting screw rod is installed on the arc-shaped piece in a threaded mode, the abutting screw rod abuts against the pressure vessel pipeline, the lead screw is in threaded connection with the connecting column, the inserting rod is clamped with the connecting column, the inserting rod is fixedly connected with the positioning rod, and the positioning rod is fixedly connected with the arc-shaped piece. The aligning mechanism further comprises a level bubble instrument and a top frame, the level bubble instrument and the top frame are both fixedly installed on the arc-shaped piece, and the lead screw is rotatably installed on the top frame. The butt welding flange has the following advantages and effects that the sealing surface of the butt welding flange is ensured to be vertical to the pressure vessel pipeline, and the assembly precision is ensured.

Description

Technical Field

[0001] This utility model relates to the field of welding flange technology, and in particular to a welding flange for pressure vessels. Background Technology

[0002] A pressure vessel is a closed device that holds gas or liquid and bears a certain pressure. When connecting a pressure vessel pipeline to an external pipeline, a welding flange must first be installed on the pressure vessel pipeline.

[0003] A weld neck flange is a type of pipe fitting. It refers to a flange with a neck and a round pipe transition that is welded to the pipe. Weld neck flanges are not easily deformed, have good sealing properties, and are widely used. However, in the assembly of existing weld neck flanges, the neck is usually tapered, which makes it impossible to keep the flange sealing surface perpendicular to the pipe after insertion into the pipe. This affects the accuracy of the flange sealing surface assembly in the later stages. Therefore, it is necessary to design a pressure vessel weld neck flange to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a pressure vessel welding flange to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a pressure vessel welding flange, comprising:

[0007] Pressure vessel piping and welding flange, wherein the pressure vessel piping is provided with an alignment mechanism for limiting the welding flange.

[0008] The alignment mechanism includes an arc-shaped component, a clamping screw, a guide limiting rod, a connecting column, a plug rod, a positioning rod, and a lead screw. The clamping screw is threaded onto the arc-shaped component and abuts against the pressure vessel pipeline. The lead screw is threadedly connected to the connecting column. The plug rod is engaged with the connecting column. The plug rod is fixedly connected to the positioning rod. The guide limiting rod is engaged with the plug rod.

[0009] A further feature of this invention is that the alignment mechanism further includes a level bubble meter and a top frame, both of which are fixedly mounted on the arc-shaped component. The lead screw is rotatably mounted on the top frame, and the guide limit rod is fixedly mounted on the top frame.

[0010] A further feature of this invention is that a slot is provided at the end of the connecting column, and the insert is engaged with the slot.

[0011] By adopting the above technical solution, the insertion rod can be limited.

[0012] A further feature of this invention is that a limiting hole one is provided on the connecting column, a limiting hole two is provided on the insert rod, and the guide limiting rod is in contact with the inner walls of the limiting hole one and the limiting hole two.

[0013] A further feature of this invention is that the welding flange has multiple mounting holes, and the positioning rod contacts the inner wall of one of the mounting holes.

[0014] By adopting the above technical solution, the welding flange can be guided to ensure that the sealing surface of the welding flange is perpendicular to the pressure vessel pipeline, thus ensuring the accuracy of assembly.

[0015] A further feature of this invention is that a tapered neck sleeve is fixedly provided on the welding flange, and the end of the tapered neck sleeve is moved into the pressure vessel pipeline.

[0016] A further feature of this invention is that the arc-shaped component is located on the outside of the pressure vessel pipeline.

[0017] By adopting the above technical solution, the position of the arc-shaped component is defined.

[0018] A further feature of this invention is that the first limiting hole and the second limiting hole are connected.

[0019] The beneficial effects of this utility model are:

[0020] This invention uses an alignment mechanism to fix the arc-shaped component to the pressure vessel pipeline via a tightening screw. A level bubble gauge keeps the arc-shaped component in a vertical position. The position of the positioning rod is adjusted according to the position of the mounting hole on the weld neck flange. The positioning rod can then be inserted into one of the mounting holes on the weld neck flange, thus guiding the weld neck flange and ensuring that the sealing surface of the weld neck flange is perpendicular to the pressure vessel pipeline, guaranteeing assembly accuracy. In addition, the positioning rod can be easily replaced according to different mounting hole diameters to meet different usage requirements. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of a pressure vessel welding flange proposed in this utility model.

[0023] Figure 2This is a three-dimensional structural diagram of a pressure vessel welding flange proposed in this utility model.

[0024] Figure 3 yes Figure 2 A schematic diagram of part A in the diagram.

[0025] Figure 4 yes Figure 2 A schematic diagram of part B in the diagram.

[0026] In the diagram, 1. Pressure vessel piping; 2. Arc-shaped component; 3. Clamping screw; 4. Level bubble meter; 5. Top frame; 6. Guide limit rod; 7. Connecting column; 8. Insert rod; 9. Positioning rod; 10. Limiting hole one; 11. Threaded rod; 12. Butt weld flange; 13. Tapered neck sleeve; 14. Mounting hole; 15. Slot. Detailed Implementation

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0028] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a pressure vessel welding flange, comprising:

[0030] Pressure vessel pipeline 1 and welding flange 12. The pressure vessel pipeline 1 is equipped with an alignment mechanism for limiting the welding flange 12. It should be noted that the alignment mechanism ensures that the sealing surface of the welding flange 12 is perpendicular to the pressure vessel pipeline 1, thus ensuring the assembly accuracy.

[0031] The alignment mechanism includes an arc-shaped component 2, a clamping screw 3, a guide limiting rod 6, a connecting column 7, an insert rod 8, a positioning rod 9, and a lead screw 11. The clamping screw 3 is threaded onto the arc-shaped component 2 and abuts against the pressure vessel pipeline 1. The lead screw 11 is threadedly connected to the connecting column 7. The insert rod 8 is engaged with the connecting column 7. The insert rod 8 is fixedly connected to the positioning rod 9. The guide limiting rod 6 is engaged with the insert rod 8.

[0032] Using the aforementioned alignment mechanism, the clamping screw 3 is rotated to abut against the pressure vessel pipeline 1, fixing the arc-shaped component 2. A level bubble gauge 4 is used to ensure the arc-shaped component 2 is in a vertical position, preventing skewing. Next, the lead screw 11 is rotated to adjust the position of the positioning rod 9, aligning it with the mounting hole 14 on the welding flange 12. Then, the tapered neck sleeve 13 on the welding flange 12 is inserted into the pressure vessel pipeline 1, moving the positioning rod 9 into the mounting hole 14 on the welding flange 12. This guides the welding flange 12, ensuring the welding method is correct. The sealing surface of flange 12 is perpendicular to the pressure vessel pipeline 1 to ensure assembly accuracy. Then, the welding flange 12 is welded to the pressure vessel pipeline 1. In addition, since the mounting hole 14 on different welding flanges 12 has different diameters, this utility model facilitates the replacement of the positioning rod 9 according to the mounting hole 14 of different diameters. When the positioning rod 9 needs to be replaced, rotate the screw 11 to move the connecting column 7 upward until the limiting hole 2 on the insertion rod 8 separates from the guide limiting rod 6. Then the insertion rod 8 can be removed. In this way, the positioning rod 9 can be replaced to meet different usage needs.

[0033] Specifically, the alignment mechanism also includes a level bubble meter 4 and a top frame 5. The level bubble meter 4 and the top frame 5 are both fixedly installed on the arc-shaped part 2. The lead screw 11 is rotatably installed on the top frame 5, and the guide limit rod 6 is fixedly installed on the top frame 5.

[0034] The alignment mechanism described above is used to determine that the arc-shaped part 2 is in a vertical position by using a bubble level 4, thus preventing skewing.

[0035] Specifically, the end of the connecting post 7 is provided with a slot 15, and the insertion rod 8 is engaged with the slot 15. It should be noted that the insertion rod 8 can be limited.

[0036] Specifically, a limiting hole 10 is provided on the connecting column 7, and a limiting hole 2 is provided on the insert rod 8. The guide limiting rod 6 is in contact with the inner wall of the limiting hole 10 and the limiting hole 2. The limiting hole 10 and the limiting hole 2 are connected. It should be noted that the function of the limiting hole 10 is to guide the vertical movement of the connecting column 7, and the function of the limiting hole 2 is to limit the insertion rod 8.

[0037] Specifically, the welding flange 12 has multiple mounting holes 14. The positioning rod 9 contacts the inner wall of one of the mounting holes 14. It should be noted that the welding flange 12 can be guided to ensure that the sealing surface of the welding flange 12 is perpendicular to the pressure vessel pipeline 1.

[0038] Specifically, a tapered neck sleeve 13 is fixedly installed on the welding flange 12. The end of the tapered neck sleeve 13 is moved into the pressure vessel pipeline 1. The arc-shaped part 2 is located outside the pressure vessel pipeline 1. It should be noted that the position of the pressure vessel pipeline 1 is limited.

[0039] Working principle:

[0040] S1: Reference Figure 1 By rotating the clamping screw 3, the clamping screw 3 is brought into contact with the pressure vessel pipeline 1 to fix the arc-shaped part 2, and the level bubble instrument 4 is used to determine that the arc-shaped part 2 is in a vertical position to avoid skewing;

[0041] S2: Reference Figure 3 and Figure 4 Rotate the lead screw 11 to move the connecting column 7 vertically. The connecting column 7 drives the positioning rod 9 to move through the insertion rod 8. Adjust the position of the positioning rod 9 so that it is aligned with the mounting hole 14 on the welding flange 12. Then, insert the tapered neck sleeve 13 on the welding flange 12 into the pressure vessel pipeline 1 and move the positioning rod 9 into the mounting hole 14 on the welding flange 12. This guides the welding flange 12 to ensure that the sealing surface of the welding flange 12 is perpendicular to the pressure vessel pipeline 1, ensuring assembly accuracy. Then, the welding flange 12 and the pressure vessel pipeline 1 can be welded.

[0042] S3: Reference Figure 3 and Figure 4 Furthermore, since the mounting holes 14 on different welding flanges 12 have different diameters, this utility model facilitates the replacement of the positioning rod 9 according to the mounting holes 14 of different diameters. That is, multiple insertion rods 8 are prepared, and a positioning rod 9 of a certain specification is installed on each insertion rod 8. When the positioning rod 9 needs to be replaced, the screw 11 is rotated to move the connecting column 7 upward until the limiting hole 2 on the insertion rod 8 separates from the guide limiting rod 6. Then the insertion rod 8 can be taken out. In this way, the positioning rod 9 can be replaced to meet different usage needs.

[0043] The above provides a detailed description of a pressure vessel welding flange provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A pressure vessel butt-welding flange, characterized in that, include: Pressure vessel pipeline (1) and welding flange (12), wherein the pressure vessel pipeline (1) is provided with an alignment mechanism for limiting the welding flange (12); The alignment mechanism includes an arc-shaped component (2), a clamping screw (3), a guide limiting rod (6), a connecting column (7), an insert rod (8), a positioning rod (9), and a lead screw (11). The clamping screw (3) is threadedly installed on the arc-shaped component (2). The clamping screw (3) abuts against the pressure vessel pipeline (1). The lead screw (11) is threadedly connected to the connecting column (7). The insert rod (8) is engaged with the connecting column (7). The insert rod (8) is fixedly connected to the positioning rod (9). The guide limiting rod (6) is engaged with the insert rod (8).

2. The pressure vessel welding flange according to claim 1, characterized in that, The alignment mechanism also includes a level bubble meter (4) and a top frame (5). The level bubble meter (4) and the top frame (5) are both fixedly installed on the arc-shaped part (2). The lead screw (11) is rotatably installed on the top frame (5). The guide limit rod (6) is fixedly installed on the top frame (5).

3. A pressure vessel welding flange according to claim 1, characterized in that, The end of the connecting column (7) is provided with a slot (15), and the insert (8) is engaged with the slot (15).

4. A pressure vessel welding flange according to claim 1, characterized in that, The connecting column (7) has a first limiting hole (10), and the insert rod (8) has a second limiting hole. The guide limiting rod (6) is in contact with the inner walls of the first limiting hole (10) and the second limiting hole.

5. A pressure vessel welding flange according to claim 1, characterized in that, The welding flange (12) has multiple mounting holes (14), and the positioning rod (9) contacts the inner wall of one mounting hole (14).

6. A pressure vessel welding flange according to claim 1, characterized in that, A tapered neck sleeve (13) is fixedly installed on the welding flange (12), and the end of the tapered neck sleeve (13) is moved into the pressure vessel pipeline (1).

7. A pressure vessel welding flange according to claim 1, characterized in that, The arc-shaped component (2) is located on the outside of the pressure vessel pipeline (1).

8. A pressure vessel welding flange according to claim 4, characterized in that, The first limiting hole (10) is connected to the second limiting hole.

Images