Impact-resistant flange with neck

Abstract

The utility model relates to the technical field of neck flange, especially an anti-impact neck flange, including flange main part, connecting ring and flange long neck, the connecting ring fixed connection is in the outer wall one side of flange main part, the flange long neck fixed connection is in the other side of connecting ring, the outside of flange main part is equipped with the anti-impact structure of surrounding coherent. This anti-impact neck flange, when the outside of neck flange is impacted by external impact force in use, the impact force first acts on the outermost outer guard ring, can slow down a part of impact force, then a certain support plate will be impacted by the remaining impact force, and rely on the reinforcing ring in series to let the stress be shared to multiple support plates, keep the integrity of anti-impact structure, improve the anti-impact ability of neck flange.

Description

Technical Field

[0001] This utility model relates to the field of neck flange technology, specifically to an impact-resistant neck flange. Background Technology

[0002] A neck flange is an important component used for pipeline connections. It is divided into two types: neck slip-on flange and neck weld neck flange. Neck weld neck flange, also called long neck flange or high neck flange, has a high neck and is connected to the pipeline by butt welding. The distance between the weld joint and the joint surface is large, and the joint surface is not affected by the deformation of the welding temperature. It has the characteristics of not being easily deformed, good sealing performance, and high pressure resistance.

[0003] For example, the authorization announcement number "CN223090204U" is for an impact-resistant necked flange. It reduces the impact force on the flange after it falls from a height, improves its impact resistance, and thus extends the service life of the flange. Existing impact-resistant necked flanges can improve their impact resistance through an elastic structure around the outside of the flange. However, the spring connects multiple protruding buffer pads, making the structure too fragmented and lacking overall coherence. Therefore, when the impact-resistant structure composed of a single buffer spring and buffer pad is subjected to a concentrated impact at a certain point, it is easy for it to break and crack at the root of the buffer spring, resulting in missing teeth on the outer perimeter of the entire necked flange and reducing its impact resistance. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing impact-resistant neck flanges, which consist of a single buffer spring and a buffer pad, are prone to breakage and cracking at the root of the buffer spring when subjected to a concentrated impact, resulting in missing teeth on the outer perimeter of the entire neck flange and reducing its impact resistance. Therefore, this invention proposes an impact-resistant neck flange.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design an impact-resistant flange with a neck, including a flange body, a connecting ring, and a flange neck. The connecting ring is fixedly connected to one side of the outer wall of the flange body, and the flange neck is fixedly connected to the other side of the connecting ring. The outer side of the flange body is provided with a continuous, circumferential impact-resistant structure.

[0007] Preferably, the surrounding continuous impact-resistant structure includes connecting blocks and outer protective rings. Multiple connecting blocks are fixedly installed on the outer wall of the flange body. Multiple support plates are fixedly connected to the other side of the multiple connecting blocks. Multiple outer protective rings are fixedly connected to the outer wall of the support plates. Reinforcing rings are fixedly embedded inside the multiple support plates. Expansion joints are fixedly chiseled on the sides of the multiple support plates.

[0008] Preferably, the outer protective ring is fixedly sleeved on the outside of the flange body, and the reinforcing ring is sleeved on the outside of the flange body.

[0009] Preferably, the sidewall of the flange body is fixedly connected with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are equidistantly distributed along the central circumference of the flange body.

[0010] Preferably, a plurality of mounting holes are fixedly provided on the inner side of the flange body, and the plurality of mounting holes are equidistantly distributed along the central circumference of the flange body.

[0011] Preferably, a docking channel is fixedly provided on the inner side of the flange neck.

[0012] Preferably, an anti-collision collar is fixedly installed on the inner side of the flange neck, and a wear-resistant layer is fixedly connected to the inner wall of the flange neck.

[0013] The present invention proposes an impact-resistant necked flange, which has the following advantages: when the outer side of the necked flange is subjected to external impact force during use, the impact force first acts on the outermost outer protective ring, which can reduce part of the impact force. Subsequently, a certain support plate will be subjected to the remaining impact force, and the force is distributed to multiple support plates by means of the series of reinforcing rings, thus maintaining the integrity of the impact-resistant structure and improving the impact resistance of the necked flange. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 for Figure 1 A frontal sectional view;

[0016] Figure 3 for Figure 1 A side sectional view;

[0017] Figure 4 for Figure 3 Enlarged diagram of part A in the middle;

[0018] Figure 5 for Figure 2 Enlarged diagram of part B in the middle;

[0019] Figure 6 for Figure 2 Enlarged diagram of part C in the middle.

[0020] In the diagram: 1. Flange body, 2. Connecting ring, 3. Flange neck, 4. Butt joint channel, 5. Circular impact-resistant structure, 51. Connecting block, 52. Support plate, 53. Outer protective ring, 54. Reinforcing ring, 55. Expansion joint, 61. Anti-collision collar, 62. Wear-resistant layer, 7. Mounting hole, 8. Reinforcing rib. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings: Example:

[0022] Please see Figure 1-6 In this embodiment, an impact-resistant necked flange includes a flange body 1, a connecting ring 2, and a flange neck 3. The connecting ring 2 is fixedly connected to one side of the outer wall of the flange body 1 and welded to one side of the outer wall of the flange body 1. The funnel-shaped flange neck 3 made of stainless steel is welded and fixed to the protruding outer wall of the connecting ring 2. In this way, the flange body 1 and the flange neck 3 can form a complete necked welding flange. The flange neck 3 is fixedly connected to the other side of the connecting ring 2. A continuous impact-resistant structure 5 is provided on the outer side of the flange body 1.

[0023] The surrounding continuous impact-resistant structure 5 includes connecting blocks 51 and outer protective rings 53. Multiple connecting blocks 51 are fixedly installed on the outer wall of the flange body 1. Each connecting block 51 is made of four stainless steel metal blocks and is welded to the outer wall of the flange body 1. A pure steel support plate 52 is welded to the other side of each connecting block 51. A complete and unbroken annular reinforcing ring 54 is embedded in the inner wall of each of the four support plates 52. The reinforcing rings 54 connect the four separate support plates 52 sequentially. Multiple support plates 52 are fixedly connected to the other side of the multiple connecting blocks 51, thus connecting the previously separate support plates 52 into a whole, allowing them to bear force and pressure together. Multiple outer protective rings 53 are fixedly connected to the outer wall of the support plates 52, and the outer protective rings 53 are welded to the support plates in a semi-circular shape. The high-strength carbon steel on the outer wall of the flange 52, and the outer protective ring 53 provide a clamping and shaping function for the inner support plate 52. Therefore, when the outer side of the flange neck is subjected to external impact force during use, the impact force first acts on the outermost outer protective ring 53, which can reduce part of the impact force. Then, a certain support plate 52 will be subjected to the remaining impact force, and the force is distributed to multiple support plates 52 by the series of reinforcing rings 54, so as to maintain the integrity of the impact-resistant structure. Reinforcing rings 54 are fixedly embedded inside the multiple support plates 52, and expansion joints 55 are fixedly cut on the sides of the multiple support plates 52. The expansion joints 55 can reserve a space sufficient for the thermal expansion and contraction of the support plates 52 to avoid the flange cracking due to temperature rise. The outer protective ring 53 is fixedly sleeved on the outside of the flange body 1, and the reinforcing ring 54 is sleeved on the outside of the flange body 1.

[0024] Multiple reinforcing ribs 8 are fixedly connected to the side wall of the flange body 1. The reinforcing ribs 8 are stainless steel metal strips that improve the strength of the side wall of the flange body 1. The multiple reinforcing ribs 8 are arranged around the outer wall of the flange body 1, which can improve the compressive strength of the outer wall of the flange body 1. The multiple reinforcing ribs 8 are equidistantly distributed along the central circumference of the flange body 1. Multiple mounting holes 7 are fixedly opened on the inner side of the flange body 1. The mounting holes 7 are through holes that have been pre-drilled. Bolts can be inserted into them to connect the flange to another flange. The multiple mounting holes 7 are equidistantly distributed along the central circumference of the flange body 1. A docking channel 4 is fixedly opened on the inner side of the flange neck 3.

[0025] An anti-collision collar 61 is fixedly installed on the inner side of the flange neck 3. The anti-collision collar 61 is a high-carbon steel ring that is inserted into the front end of the flange neck 3 to improve the deformation resistance of the weak part of the flange neck 3. A wear-resistant layer 62 is fixedly connected to the inner wall of the flange neck 3, and a relatively wear-resistant alloy high-strength wear-resistant steel is added to one side inside the flange neck 3.

[0026] Working principle:

[0027] Impact-resistant neck flanges are important components for pipeline connections. The neck of the flange is high and it is connected to the pipeline by butt welding. The distance between the weld and the joint surface is large, and the joint surface is not affected by the deformation of the welding temperature. It has the characteristics of not being easily deformed, good sealing performance, and high pressure resistance. It is suitable for pipelines that transport expensive, flammable and explosive media, as well as high-pressure pipelines.

[0028] The connecting ring 2 is welded to one side of the outer wall of the flange body 1, and the long neck 3 of the funnel-shaped flange made of stainless steel is welded to the outer wall of the protruding connecting ring 2 for fixation. In this way, the flange body 1 and the long neck 3 can form a complete necked welding flange.

[0029] The connecting block 51 is made of four stainless steel metal blocks. The four connecting blocks 51 are welded to the outer wall of the flange body 1 and fixed. On the other side of each connecting block 51, a pure steel support plate 52 is welded. A complete and unbroken annular reinforcing ring 54 is embedded in the inner wall of the four support plates 52. The reinforcing ring 54 can connect the four separate support plates 52 in series, so that multiple originally separate support plates 52 can be connected into a whole, and they can bear the force and pressure together. The outer protective ring 53 is made of high-strength carbon steel welded to the outer wall of the support plate 52 in a semi-arc shape. The outer protective ring 53 provides a clamping and shaping function for the inner support plate 52.

[0030] Therefore, when the outer side of the neck flange is subjected to external impact during use, the impact force first acts on the outermost outer protective ring 53, which can reduce part of the impact force. Then, a certain support plate 52 will be subjected to the remaining impact force, and the force is distributed to multiple support plates 52 by the series of reinforcing rings 54, so as to maintain the integrity of the impact-resistant structure. The expansion joint 55 can reserve a space sufficient for the support plate 52 to expand and contract with temperature, so as to avoid the flange cracking due to temperature rise.

[0031] The reinforcing rib 8 is a stainless steel metal strip that improves the strength of the side wall of the flange body 1. Multiple reinforcing ribs 8 are arranged around the outer wall of the flange body 1, which can improve the compressive strength of the outer wall of the flange body 1. The mounting hole 7 is a through hole that has been pre-drilled. Bolts can be inserted into the hole to connect the flange to another flange. Multiple mounting holes 7 are equidistantly distributed along the central circumference of the flange body 1.

[0032] The anti-collision collar 61 is a high-carbon steel ring inserted inside the front end of the flange neck 3 to improve the deformation resistance of the weak points of the flange neck 3. The inner wall of the flange neck 3 is fixedly connected with a wear-resistant layer 62, and a relatively wear-resistant alloy high-strength wear-resistant steel is added to one side inside the flange neck 3.

[0033] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. An impact-resistant necked flange, comprising a flange body (1), a connecting ring (2), and a flange neck (3), wherein the connecting ring (2) is fixedly connected to one side of the outer wall of the flange body (1), and the flange neck (3) is fixedly connected to the other side of the connecting ring (2), characterized in that: The flange body (1) is provided with a continuous surrounding impact-resistant structure (5) on the outside. The continuous surrounding impact-resistant structure (5) includes connecting blocks (51) and outer protective rings (53). Multiple connecting blocks (51) are fixedly installed on the outer wall of the flange body (1). Multiple support plates (52) are fixedly connected to the other side of the multiple connecting blocks (51). Multiple outer protective rings (53) are fixedly connected to the outer wall of the support plates (52). Reinforcing rings (54) are fixedly embedded inside the multiple support plates (52). Expansion joints (55) are fixedly chiseled on the side of the multiple support plates (52).

2. The impact-resistant necked flange according to claim 1, characterized in that: The outer protective ring (53) is fixedly sleeved on the outside of the flange body (1), and the reinforcing ring (54) is sleeved on the outside of the flange body (1).

3. The impact-resistant necked flange according to claim 2, characterized in that: The side wall of the flange body (1) is fixedly connected with a plurality of reinforcing ribs (8), and the plurality of reinforcing ribs (8) are equidistantly distributed along the central circumference of the flange body (1).

4. The impact-resistant necked flange according to claim 3, characterized in that: The flange body (1) has multiple mounting holes (7) fixedly opened on its inner side, and the multiple mounting holes (7) are equidistantly distributed along the central circumference of the flange body (1).

5. The impact-resistant necked flange according to claim 4, characterized in that: A docking channel (4) is fixedly opened on the inner side of the flange neck (3).

6. The impact-resistant necked flange according to claim 5, characterized in that: An anti-collision collar (61) is fixedly installed on the inner side of the flange neck (3), and a wear-resistant layer (62) is fixedly connected to the inner wall of the flange neck (3).

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