Stainless steel welding rectangular air pipe

Abstract

The utility model discloses a stainless steel welding rectangular air pipe, which comprises a stainless steel welding pipeline, an anti-deformation connecting flange arranged at the end part of the stainless steel welding pipeline, an anti-corrosion welding seam reinforcing mechanism arranged at the welding seam of the stainless steel welding pipeline and used for ensuring the tightness of pipeline connection and preventing distortion and deformation, and an anti-corrosion welding seam reinforcing mechanism arranged at the welding seam of the stainless steel welding pipeline, the corrosion-resistant welding seam reinforcing mechanism comprises a first locking plate and a second locking plate, the first locking plate is welded to the outer side wall of the stainless steel welding pipeline, the stability and firmness of the air pipe in the high-frequency vibration and strong impact environment can be remarkably improved, and the corrosion resistance and cracking resistance of the welding seam are improved. According to the anti-corrosion air pipe, the sealing performance and tightness of the connecting positions of the pipes are guaranteed, meanwhile, corrosion resistance can be achieved, the anti-oxidation coating materials further improve the corrosion resistance of the welding seams, the anti-cracking performance of the welding seams can be remarkably enhanced, and the service life of the whole air pipe is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel welding, in particular to a stainless steel welded rectangular air duct. Background Art

[0002] A stainless steel welded rectangular air duct (for marine use) is specially designed for ventilation ducts in marine environments. It is made of stainless steel and manufactured through welding technology.

[0003] However, since ships are exposed to high salt fog and seawater for a long time, the welds of the air duct are susceptible to corrosion and cracking. Ships are frequently subjected to vibrations and impacts during navigation, which can cause the fixing brackets of the air duct to loosen or fail easily, affecting the stability and safety of the air duct. In addition, since stainless steel welded rectangular air ducts are exposed to seawater for a long time, they are susceptible to corrosion and have no good anti-corrosion effect. The air ducts are relatively fixed in their installation method, and it is troublesome to re-weld the corroded seams of stainless steel welded rectangular air ducts. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that the air duct joints are easily corroded and the welding is troublesome, and proposes a stainless steel welded rectangular air duct.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A stainless steel welded rectangular air duct comprises a stainless steel welded pipe, the ends of which are provided with anti-deformation connection flanges for ensuring tightness of pipe connection and preventing twisting and deformation;

[0007] The invention relates to a corrosion-resistant weld reinforcement mechanism, which is arranged at the weld of a stainless steel welded pipe to improve the corrosion resistance and crack resistance of the weld.

[0008] Preferably, the corrosion-resistant weld reinforcement mechanism includes a first locking plate and a second locking plate, the first locking plate is welded to the outer wall of the stainless steel welded pipe, the second locking plate is slidably arranged on the outer wall of the stainless steel welded pipe, and the four diagonal positions of the outer wall of the second locking plate are provided with plug blocks, the plug blocks are provided with a limiting mechanism, and the first locking plate and the second locking plate are provided with a covering mechanism.

[0009] Preferably, the limiting mechanism includes a receiving groove provided on the plug block, a telescopic rod is fixedly connected to the bottom of the receiving groove, an end of the telescopic rod away from the bottom of the receiving groove is fixedly connected to the limiting block, a socket adapted to the plug block is provided on the side wall of the first locking plate, a limiting opening connected to the socket is provided on the first locking plate, and the limiting opening is adapted to the limiting block.

[0010] Preferably, a holding spring is sleeved on the outer side wall of the telescopic rod, and two ends of the holding spring are fixedly connected to the bottom of the limit block and the outer side wall of the telescopic rod respectively.

[0011] Preferably, the covering mechanism includes a "mouth"-shaped blocking plate fixedly connected to the outer side wall of the second locking plate, and the side wall of the first locking plate is provided with a blocking groove adapted to the blocking plate.

[0012] Preferably, the side wall of the sealing plate is coated with an anti-oxidation coating, which can effectively prevent internal oxidation, further extend the service life of the pipeline, and reduce the risk of weld cracking.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model can significantly increase the stability and firmness of the air duct in high-frequency vibration and strong impact environments through the coordinated use of an anti-corrosion weld reinforcement mechanism and a layer of anti-oxidation coating coated on the side wall of the sealing plate, ensuring the sealing and tightness of the pipe connection while also being corrosion-resistant. The anti-oxidation coating material not only further improves the corrosion resistance of the weld, but also significantly enhances the weld's anti-cracking performance, thereby extending the service life of the entire air duct.

[0015] 2. The utility model realizes the rapid removal of the second locking plate through the close cooperation and complementary effect between the components in the limiting mechanism, simplifies the installation process, and reduces the installation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a stainless steel welded rectangular air duct proposed in the utility model;

[0017] Figure 2 This is a schematic diagram of the second locking plate structure of a stainless steel welded rectangular air duct proposed in the present invention;

[0018] Figure 3 This is a schematic structural diagram of the first locking plate of a stainless steel welded rectangular air duct proposed in the present invention;

[0019] Figure 4 This is a schematic structural diagram of a limiting mechanism for a stainless steel welded rectangular air duct proposed in the present invention.

[0020] In the figure: 1. Stainless steel welded pipe; 2. Anti-deformation connecting flange; 3. First locking plate; 4. Second locking plate; 5. Insert block; 6. Storage slot; 7. Telescopic rod; 8. Limit block; 9. Socket; 10. Limit port; 11. Tightening spring; 12. Sealing plate; 13. Sealing slot. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] Reference Figure 1-4 A stainless steel welded rectangular air duct includes a stainless steel welded pipe 1. The ends of the stainless steel welded pipe 1 are provided with anti-deformation connecting flanges 2 to ensure the tightness of the pipe connection and prevent twisting and deformation; the anti-deformation connecting flanges 2 are provided at both ends of the stainless steel welded pipe 1 to ensure the tightness of the pipe connection and prevent twisting and deformation. The connecting flanges are generally made of stainless steel and can be fixed at both ends of the pipe by welding or bolting to ensure the reliability of the connection.

[0024] The anti-corrosion weld reinforcement mechanism is arranged at the weld of the stainless steel welded pipe 1 to improve the corrosion resistance and crack resistance of the weld.

[0025] The corrosion-resistant weld reinforcement mechanism includes a first locking plate 3 and a second locking plate 4. The first locking plate 3 is welded to the outer wall of the stainless steel welded pipe 1, and the second locking plate 4 is slidably set on the outer wall of the stainless steel welded pipe 1. Insert blocks 5 are provided at the four diagonal positions of the outer wall of the second locking plate 4. A limiting mechanism is provided on the insert blocks 5, and a covering mechanism is provided on the first locking plate 3 and the second locking plate 4.

[0026] The limiting mechanism includes a receiving groove 6 provided on the plug block 5, a telescopic rod 7 is fixedly connected to the bottom of the receiving groove 6, and one end of the telescopic rod 7 away from the bottom of the receiving groove 6 is fixedly connected to the limiting block 8. The side wall of the first locking plate 3 is provided with a socket 9 adapted to the plug block 5, and the first locking plate 3 is provided with a limiting opening 10 connected to the socket 9, and the limiting opening 10 is adapted to the limiting block 8.

[0027] The outer side wall of the telescopic rod 7 is sleeved with a tightening spring 11 , and the two ends of the tightening spring 11 are fixedly connected to the bottom of the limit block 8 and the outer side wall of the telescopic rod 7 respectively.

[0028] The covering mechanism includes a "mouth"-shaped blocking plate 12 fixedly connected to the outer side wall of the second locking plate 4 , and a blocking groove 13 adapted to the blocking plate 12 is opened on the side wall of the first locking plate 3 .

[0029] The side wall of the sealing plate 12 is coated with an anti-oxidation coating, which can effectively prevent internal oxidation, further extend the service life of the pipeline, and reduce the risk of weld cracking. The anti-oxidation coating is evenly covered on the entire surface of the sealing plate 12 to ensure that there are no dead corners or exposed areas. The thickness of the coating can be adjusted according to the specific use environment and expected life, but the recommended thickness is 0.1-0.5 mm.

[0030] The specific working principle of this utility model is as follows:

[0031] When the second locking plate 4 needs to be removed, it is only necessary to press the limit block 8 and pull the second locking plate 4 at the same time, that is, the limit block 8 is disengaged from the limit mouth 10, which makes it convenient to quickly remove the second locking plate 4.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stainless steel welded rectangular air duct, comprising a stainless steel welded pipe (1), characterized in that: The end of the stainless steel welded pipe (1) is provided with an anti-deformation connection flange (2) for ensuring the tightness of the pipe connection and preventing twisting and deformation; An anti-corrosion weld reinforcement mechanism is provided at the weld of a stainless steel welded pipe (1) to improve the corrosion resistance and crack resistance of the weld.

2. The stainless steel welded rectangular air duct according to claim 1, characterized in that: The corrosion-resistant weld reinforcement mechanism comprises a first locking plate (3) and a second locking plate (4), wherein the first locking plate (3) is welded to the outer wall of the stainless steel welded pipe (1), and the second locking plate (4) is slidably arranged on the outer wall of the stainless steel welded pipe (1), and plugs (5) are provided at four diagonal positions of the outer wall of the second locking plate (4), and a limiting mechanism is provided on the plugs (5), and a covering mechanism is provided on the first locking plate (3) and the second locking plate (4).

3. The stainless steel welded rectangular air duct according to claim 2, characterized in that: The limiting mechanism comprises a receiving groove (6) provided on the insert block (5), a telescopic rod (7) fixedly connected to the bottom of the receiving groove (6), an end of the telescopic rod (7) away from the bottom of the receiving groove (6) is fixedly connected to the limiting block (8), a socket (9) adapted to the insert block (5) is provided on the side wall of the first locking plate (3), a limiting opening (10) connected to the socket (9) is provided on the first locking plate (3), and the limiting opening (10) is adapted to the limiting block (8).

4. The stainless steel welded rectangular air duct according to claim 3, characterized in that: The outer side wall of the telescopic rod (7) is sleeved with a holding spring (11), and the two ends of the holding spring (11) are fixedly connected to the bottom of the limit block (8) and the outer side wall of the telescopic rod (7) respectively.

5. The stainless steel welded rectangular air duct according to claim 2, characterized in that: The covering mechanism comprises a "mouth"-shaped blocking plate (12) fixedly connected to the outer side wall of the second locking plate (4), and a blocking groove (13) adapted to the blocking plate (12) is formed on the side wall of the first locking plate (3).

6. The stainless steel welded rectangular air duct according to claim 5, characterized in that: The side wall of the sealing plate (12) is coated with an anti-oxidation coating, which can effectively prevent internal oxidation, further extend the service life of the pipeline, and reduce the risk of weld cracking.

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