A new type of necked flat welding flange

Abstract

This utility model discloses a novel necked flat-welding flange, relating to the technical field of flanges. It solves the problem that after welding a flange to a pipeline, if the flange is subjected to strong impacts or knocks, the welded area is prone to damage or breakage, easily causing the flange to become unusable with the pipeline. Furthermore, when connecting the flange to the pipeline, misalignment can easily occur, leading to tilting of the welded flange and pipeline, thus reducing the efficiency of flange welding. The flange includes a flange and an arc-shaped ring. A neck is fixedly installed inside the bottom surface of the flange, and the arc-shaped rings are symmetrically arranged at the lower end of the flange. Support columns are fixedly installed on the bottom surface of each arc-shaped ring. The cooperation between the support columns and the arc-shaped rings enhances the stability of the welded flange position, preventing breakage due to stress on the welded area during subsequent use.

Description

Technical Field

[0001] This utility model relates to the technical field of flanges, specifically a novel necked flat-welding flange. Background Technology

[0002] The full name of the necked flat-face flange is necked flat-face steel pipe flange. A search revealed Chinese patent publication number CN222392238U, which discloses a novel necked flat-face flange, including a first flange and a second flange. Both the first and second flanges include a flange body and a neck. A through hole is formed at the center of both the first and second flanges, and multiple corresponding mounting holes are arranged in a ring on the flange bodies. A sealing ring is provided on the connecting surface of the first flange, and a sealing groove is provided on the connecting surface of the second flange, the sealing groove being adapted to the sealing ring. Multiple positioning blocks are arranged in a ring on the connecting surface of the second flange, and multiple positioning grooves adapted to the positioning blocks are arranged in a ring on the connecting surface of the first flange. Permanent magnets are respectively placed in the positioning grooves. This utility model, through its unique structural design and material selection, enhances the sealing performance and corrosion resistance of the flange, ensures accurate alignment between the two flanges during pipe connection, and improves the stability of the connection between the two flanges.

[0003] However, after the flange is welded to the pipeline, if the flange part is subjected to strong impact or bump, there is an inevitable risk that the welded position will be damaged or broken, which may cause the flange to be unable to be used with the pipeline. At the same time, when the flange is connected to the pipeline, it is easy to cause misalignment between the flange and the pipeline, which will lead to the welded flange and the pipeline tilting, thereby reducing the efficiency of flange welding. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel necked flat-welding flange, which solves the problem that after the flange is welded to the pipeline, if the flange part is subjected to strong impact or bump, the weld position will inevitably be damaged or broken, which may easily cause the flange to be unable to be used with the pipeline. At the same time, when the flange is connected to the pipeline, misalignment may easily occur between the flange and the pipeline, resulting in the welded flange and the pipeline tilting, thereby reducing the efficiency of flange welding.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel necked flat-welding flange, comprising a flange and an arc-shaped ring. A neck platform is fixedly installed inside the bottom surface of the flange. The arc-shaped ring is symmetrically arranged at the lower end of the flange, and a support column is fixedly installed on the bottom surface of each arc-shaped ring. A threaded column is fixedly installed at the upper end of each support column. A fixing ring is fixedly sleeved between the support column and the threaded column. An L-shaped block is symmetrically fixedly installed on the bottom surface of the flange. Each L-shaped block has a connecting hole inside, and the threaded column is slidably connected to the inside of the connecting hole.

[0006] Preferably, the upper end of each threaded post is threaded with a nut, which is respectively located at the upper end of the connecting hole. The nut, through its connection with the threaded post, presses against the side wall of the L-shaped block, thereby facilitating the stabilization of the flange position.

[0007] Preferably, the top surface of each of the arc-shaped rings is symmetrically fixed with fixing blocks, the side walls of the two arc-shaped rings are in contact with each other when they are connected, and the fixing blocks are in contact with each other. The two fixing blocks are internally threaded with bolts when the two arc-shaped rings are connected, which makes it easy to make the connection of the arc-shaped rings on both sides stable and can protect the flange.

[0008] Preferably, the inner diameter of the neck is equal to the inner diameter of the flange, thereby facilitating the connection between the pipe and the flange.

[0009] Preferably, the flange has multiple threaded holes spaced at equal intervals inside, and the upper end of the L-shaped block is located between the threaded holes and the neck, which facilitates convenient connection when installing adjacent flanges.

[0010] Preferably, the two arc-shaped rings are connected to form a circular ring, and the inner and outer diameters are equal to the inner and outer diameters of the flange, thereby facilitating the connection of the threaded column to the inside of the connecting hole.

[0011] This utility model provides a novel necked flat-welding flange. It has the following beneficial effects:

[0012] This new type of necked flat-face flange, when used, is symmetrically clamped onto the pipe by symmetrically arranged arc-shaped rings, and the connecting hole is sleeved on the screw rod, and supported by the fixing ring, which can support the flange during installation, limit its position, and make the flange position horizontal during welding.

[0013] This new type of necked flat-face flange, through the cooperation between the set support column and the arc ring, can enhance the stability of the flange position after welding and prevent breakage due to stress on the welding position during subsequent use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a side view of the present invention;

[0016] Figure 3 This is a schematic diagram of the bottom structure of the flange of this utility model;

[0017] Figure 4 This is a schematic diagram of the support column structure of this utility model.

[0018] In the diagram, 1 is the flange; 2 is the neck; 3 is the arc ring; 4 is the fixing block; 5 is the bolt; 6 is the support column; 7 is the fixing ring; 8 is the L-shaped block; 9 is the nut; 10 is the threaded column; 11 is the connecting hole; and 12 is the threaded hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4This utility model provides a novel necked flat-welding flange, including a flange 1 and an arc-shaped ring 3. A neck platform 2 is fixedly installed inside the bottom surface of the flange 1. The arc-shaped rings 3 are symmetrically arranged at the lower end of the flange 1, and support columns 6 are fixedly installed on the bottom surface of each arc-shaped ring 3. Threaded columns 10 are fixedly installed on the upper end of each support column 6. A fixing ring 7 is fixedly sleeved between the support column 6 and the threaded column 10. L-shaped blocks 8 are symmetrically fixedly installed on the bottom surface of the flange 1. Each L-shaped block 8 has a connecting hole 11 inside. The threaded columns 10 are slidably connected to the inside of the connecting holes 11. Nuts 9 are threadedly sleeved on the upper end of each threaded column 10 and are respectively disposed at the connecting holes 11. At the upper end of hole 11, nut 9 presses against the side wall of L-shaped block 8 through connection with threaded post 10. Fixing blocks 4 are symmetrically fixed on the top surface of arc ring 3. When the two arc rings 3 are connected, their side walls fit together and the fixing blocks 4 fit together. Bolts 5 are threadedly connected inside the two fixing blocks 4 when the two arc rings 3 are connected. The inner diameter of neck 2 is equal to the inner diameter of flange 1. Multiple threaded holes 12 are evenly spaced inside flange 1. The upper end of L-shaped block 8 is located between threaded holes 12 and neck 2. After the two arc rings 3 are connected, they form a ring, and the inner and outer diameters are equal to the inner and outer diameters of flange 1. This facilitates the connection of the threaded post 10 to the inside of the connecting hole 11. When welding the flange 1, the neck 2 is fitted onto the pipe being used. At this time, the bottom surface of the flange 1 is placed horizontally on the workbench. The pipe is inserted into the inside of the neck 2, and then the arc-shaped rings 3 on both sides are installed and fitted onto the pipe. The threaded post 10 is slidably connected to the inside of the connecting hole 11 until the fixing ring 7 and the side wall of the L-shaped block 8 are in contact with each other. Then, the adjacent fixing blocks 4 on the arc-shaped ring 3 are fastened with bolts 5. The inner side wall of the arc-shaped ring 3 is in contact with the side wall of the pipe, and the surfaces of the arc-shaped rings 3 on both sides are horizontal. Then, the nut 9 is threaded onto the outside of the threaded post 10 until it is tightly fitted with the side wall of the L-shaped block 8. This ensures that the flange 1 to be welded is horizontal and can be firmly connected to the pipe. Finally, the flange 1 is welded. This not only fixes the position of the flange 1 but also protects the flange 1.

[0021] It should be noted that, in this embodiment, as Figure 1-4As shown, when welding flange 1, the neck 2 is fitted onto the pipe being used. At this time, the bottom surface of flange 1 is placed horizontally on the workbench. The pipe is inserted into the neck 2, and then the two arc-shaped rings 3 are installed, with each arc-shaped ring 3 fitted onto the pipe. The threaded post 10 is slidably connected to the inside of the connection hole 11 until the fixing ring 7 and the side wall of the L-shaped block 8 are in contact with each other. Then, the adjacent fixing blocks 4 on the arc-shaped ring 3 are fastened with bolts 5. The inner side wall of the arc-shaped ring 3 is in contact with the side wall of the pipe, and the surfaces of the two arc-shaped rings 3 are horizontal. Then, the nut 9 is threaded onto the outside of the threaded post 10 until it is tightly fitted with the side wall of the L-shaped block 8. This ensures that the flange 1 to be welded is horizontal and that the connection with the pipe is secure. Finally, the flange 1 is welded. This process not only fixes the position of flange 1 but also protects it.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new type of necked plain weld flange characterized in that: The flange (1) includes a flange (1) and an arc ring (3). A neck (2) is fixedly installed inside the bottom surface of the flange (1). The arc ring (3) is symmetrically arranged at the lower end of the flange (1). A support column (6) is fixedly installed on the bottom surface of the arc ring (3). A threaded column (10) is fixedly installed at the upper end of the support column (6). A fixing ring (7) is fixedly sleeved between the support column (6) and the threaded column (10). An L-shaped block (8) is symmetrically fixedly installed on the bottom surface of the flange (1). A connecting hole (11) is provided inside the L-shaped block (8). The threaded column (10) is slidably connected to the inside of the connecting hole (11).

2. A novel necked plain weld flange as claimed in claim 1, wherein: The upper end of the threaded column (10) is threaded with a nut (9) and is respectively set at the upper end of the connecting hole (11). The nut (9) squeezes the side wall of the L-shaped block (8) through the connection with the threaded column (10).

3. A novel necked plain weld flange as claimed in claim 1, wherein: The top surface of each arc ring (3) is symmetrically fixed with fixing blocks (4). When the two arc rings (3) are connected, their side walls are in contact with each other, and the fixing blocks (4) are in contact with each other. When the two arc rings (3) are connected, the two fixing blocks (4) are internally threaded with bolts (5).

4. A novel necked plain weld flange as claimed in claim 1, wherein: The inner diameter of the neck (2) is equal to the inner diameter of the flange (1).

5. A novel necked plain weld flange as claimed in claim 1, wherein: The flange (1) has multiple threaded holes (12) spaced evenly inside, and the upper end of the L-shaped block (8) is located between the threaded holes (12) and the neck (2).

6. A novel necked plain weld flange as claimed in claim 1, wherein: The two arc-shaped rings (3) are connected to form a circular ring, and the inner and outer diameters are equal to the inner and outer diameters of the flange (1).

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