A fully welded stainless steel air duct for ventilation

Abstract

The utility model relates to a ventilation pipeline technical field, specifically disclose a full structure welding stainless steel ventilation pipe for ventilation. Including the pipe body, the outer wall welding of pipe body has the anti -vibration subassembly, and the end of pipe body is fixed with the welding ring and reinforcing component. The anti -vibration subassembly includes a plurality of asymmetric distribution's reinforcing rib and fills the fibre cotton between reinforcing rib. The reinforcing component sets up at the inboard of welding ring, and includes the sealing ring along the extension of pipe body inner wall, and along the reinforcing block and reinforcing groove that set up in the welding ring end face periphery. The utility model discloses through the setting of anti -vibration subassembly, effectively destroys the pipe wall resonance and absorbs the sound wave, significantly reduced the operating noise, at the same time, through the structure interlock and the pre -sealing effect of sealing ring that reinforcing component formed before welding, solved the problem of the unstable connection, easy leakage in the prior art, greatly promoted the reliability and air tightness of pipeline connection.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, and in particular to a fully welded stainless steel ventilation duct for ventilation. Background Technology

[0002] Stainless steel welded ducts are an important component of ventilation systems in industrial and civil buildings due to their excellent corrosion resistance and high strength. In engineering practice, multiple standard duct sections need to be connected on-site by welding to construct a complete duct network.

[0003] However, existing duct connection methods have significant structural defects. Currently, the common practice is to directly align the ends of two duct sections and then weld them together. This simple butt-welding connection method is structurally very fragile, and stress concentration points will form in the weld area and its heat-affected zone. Under the long-term action of the duct's own weight and the vibration load generated during system operation, these stress concentration points are prone to metal fatigue, eventually leading to weld cracking. This not only causes system leaks but may even lead to duct rupture and other safety accidents.

[0004] Furthermore, during the welding process, it is difficult to achieve precise and stable alignment and fixation between two independent circular pipe sections, which causes inconvenience to the welding operation and easily leads to a decline in weld quality. The stability and sealing of the entire connection depend entirely on the quality of the weld, lacking structural redundancy and resulting in low reliability.

[0005] Therefore, how to fundamentally change the structure of the duct connection end and provide a high-strength physical lock before welding to share the stress at the weld and improve the stability and service life of the overall connection is an urgent problem to be solved in this field.

[0006] Therefore, this utility model proposes a fully welded stainless steel ventilation duct for ventilation to overcome the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a fully welded stainless steel ventilation duct with a complete structure, which aims to improve the problems of low reliability in long-term use caused by the simple structure and poor stability of the welded joints of existing stainless steel welded ventilation ducts, which are prone to stress concentration points.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a fully welded stainless steel ventilation pipe for ventilation, comprising a pipe body and a welding ring and a reinforcing component disposed at the end of the pipe body.

[0009] The reinforcement component includes a reinforcement block and a reinforcement groove arranged circumferentially along the end face of the welding ring.

[0010] Furthermore, the reinforcing block and the reinforcing groove of the reinforcing component form a stable interlocking structure before welding by cooperating with the reinforcing groove and the reinforcing block of another identical section of the ventilation pipe.

[0011] Preferably, the reinforcing blocks and the reinforcing grooves are alternately spaced along the circumferential direction of the end face of the welding ring.

[0012] In one specific implementation, the reinforcing block is a boss structure, and the reinforcing groove is a groove structure that matches the boss structure.

[0013] Preferably, the reinforcing component further includes a sealing ring disposed on the inner wall of the end of the tube.

[0014] Preferably, the sealing ring is an annular protrusion extending from the inner wall of the tube towards the center of the tube.

[0015] Preferably, a vibration damping component is also fixedly connected to the outer wall of the tube. The vibration damping component includes a plurality of asymmetrically distributed reinforcing ribs and fiber cotton filling the spaces between the reinforcing ribs.

[0016] Preferably, the spacing between adjacent reinforcing ribs is not equal.

[0017] Preferably, the reinforcing component and the tube body are integrally formed.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, by setting an interlocking structure consisting of a reinforcing block and a reinforcing groove at the connection end of the air duct, the problem of poor stability and easy damage to the weld joint due to stress concentration when the two sections of air duct are welded together in the prior art is solved. The high-strength physical pre-locking effect is achieved before welding, which effectively distributes the mechanical stress at the weld joint and greatly enhances the stability and service life of the connection.

[0020] 2. In this utility model, the vibration damping component consisting of asymmetrically distributed reinforcing ribs and fiber cotton is first set on the outer wall of the pipe body, which solves the problem of large noise generated by gas flow and pipe wall vibration in the prior art. It achieves the dual noise reduction effect of destroying the pipe wall resonance condition and absorbing sound wave energy, and significantly reduces the operating noise of the ventilation system. Attached Figure Description

[0021] Figure 1 This is a perspective view of a fully welded stainless steel ventilation duct for ventilation proposed in this utility model;

[0022] Figure 2 A schematic diagram of fiber cotton for a fully welded stainless steel ventilation duct for ventilation proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of a reinforcing block for a fully welded stainless steel ventilation duct with ventilation structure proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the welding ring of a fully welded stainless steel ventilation pipe for ventilation proposed in this utility model;

[0025] Figure 5 This is a schematic diagram of the reinforcing ribs of a fully welded stainless steel ventilation pipe for ventilation proposed in this utility model.

[0026] Legend:

[0027] 1. Pipe body; 2. Vibration damping component; 201. Reinforcing rib; 202. Fiber cotton; 3. Reinforcing component; 301. Sealing ring; 302. Reinforcing block; 303. Reinforcing groove; 4. Welding ring. Detailed Implementation

[0028] 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.

[0029] Reference Figures 1-5 One embodiment of this utility model is a fully welded stainless steel ventilation pipe for ventilation, which aims to solve the problems of high noise during operation of existing ventilation ducts and insufficient sealing and stability at the welded joints between pipe sections.

[0030] The fully welded stainless steel ventilation duct for ventilation mainly uses the duct body 1 as the basic frame. The outer wall of the duct body 1 is fixedly connected with the vibration damping component 2, and the end of the duct body 1 is provided with the reinforcement component 3 and the welding ring 4 for docking and welding.

[0031] Specifically, the vibration damping component 2 includes multiple reinforcing ribs 201 and fiber cotton 202. The reinforcing ribs 201 are fixedly connected to the outer wall of the tube body 1 by welding, and the reinforcing ribs 201 are asymmetrically distributed on the outer wall of the tube body 1, that is, the spacing between adjacent reinforcing ribs 201 is not equal. This structure can effectively destroy the conditions for resonance to form when the tube wall vibrates. The fiber cotton 202 fills the space enclosed by the reinforcing ribs 201 and the outer wall of the tube body 1, and is used to absorb the sound wave energy generated by the gas flow.

[0032] At the connecting end of the pipe body 1, the welding ring 4 is fixedly connected to the very end of the pipe body 1, while the reinforcing component 3 is integrally disposed inside the welding ring 4. The reinforcing component 3 consists of a sealing ring 301, a reinforcing block 302, and a reinforcing groove 303. The sealing ring 301 extends circumferentially along the inner wall of the end of the pipe body 1. The sealing ring 301 is an annular protrusion extending from the inner wall of the pipe body 1 towards the center of the pipe. When two sections of the duct are joined, the sealing ring 301 can be inserted into the other section of the duct to provide a preliminary seal. The reinforcing block 302 and the reinforcing groove 303 are arranged circumferentially along the end face of the welding ring 4. More specifically, the reinforcing block 302 and the reinforcing groove 303 are arranged circumferentially along the end face of the welding ring 4. The grooves 303 are alternately spaced along the end face of the welding ring 4. The reinforcing block 302 is a boss structure, and the reinforcing groove 303 is a groove structure that matches the boss structure. This arrangement allows the reinforcing block 302 of one welding pipe to be embedded in the reinforcing groove 303 of the other welding pipe when two identical welding pipes are connected, forming a structural interlock and greatly enhancing the stability of the connection. The reinforcing component 3 and the pipe body 1 are integrally formed, ensuring that the connection end has higher structural strength and reliability. Furthermore, the pipe body 1, the reinforcing rib 201, the reinforcing component 3, and the welding ring 4 are all made of stainless steel.

[0033] The reinforcing component 3 specifically includes a sealing ring 301, a reinforcing block 302, and a reinforcing groove 303. The reinforcing component 3 is integrally disposed on the inner side of the welding ring 4. The reinforcing block 302 and the reinforcing groove 303 are arranged circumferentially along the end face of the welding ring 4. In a preferred embodiment, the reinforcing block 302 and the reinforcing groove 303 are alternately spaced along the end face of the welding ring 4. The specific shape of the reinforcing block 302 is a boss structure, and the specific shape of the reinforcing groove 303 is a groove structure that matches the boss structure. The sealing ring 301 extends circumferentially along the inner wall of the end of the pipe body 1 to form an annular protrusion.

[0034] In the assembled state, when two sections of fully welded stainless steel ventilation ducts are joined together, the reinforcing block 302 of one section of the duct will precisely embed into the reinforcing groove 303 of the other section, forming a structural interlock. At the same time, the sealing ring 301 of one section of the duct will be inserted into the inner cavity of the pipe body 1 of the other section. This mortise and tenon interlocking structure achieved by the reinforcing block 302 and the reinforcing groove 303 ensures that the two pipe bodies 1 have formed a highly stable physical connection before the welding and fixing operation of the welding ring 4 is carried out, which significantly improves the anti-misalignment and anti-torsion ability of the connection position. The insertion and fitting of the sealing ring 301 enhances the airtightness of the connection and effectively prevents gas leakage. The subsequent welding and fixing of the welding ring 4 can be completed by conventional welding processes in this field, such as argon arc welding, which will not be described in detail here.

[0035] To further improve the structural stability and noise reduction effect of the vibration damping component 2, the reinforcing ribs 201 are firmly fixed to the outer wall of the pipe body 1 by welding. The asymmetrical distribution of the reinforcing ribs 201 is specifically achieved by setting the spacing between adjacent reinforcing ribs 201 to be unequal.

[0036] In order to make the structure of the sealing ring 301 more defined and the sealing effect better, the specific configuration of the sealing ring 301 is an annular protrusion that extends integrally from the inner wall of the tube body 1 to the center of the tube.

[0037] To achieve a more reliable and precise structural interlock, the reinforcing block 302 and the reinforcing groove 303 are alternately spaced along the end face of the welding ring 4. In this layout, the specific shape of the reinforcing block 302 is a boss structure, while the shape of the reinforcing groove 303 is a groove structure that matches the boss structure.

[0038] To improve the overall structural strength of the connection end and simplify the production process, the reinforcing component 3 and the pipe body 1 are integrally formed.

[0039] To ensure that the welding duct has excellent corrosion resistance and service life, the main components of the welding duct, including the pipe body 1, reinforcing rib 201, reinforcement component 3, and welding ring 4, are all made of stainless steel.

[0040] Working principle: During pipeline installation, the ends of two welding air pipes are joined together. The reinforcing block 302 of one welding air pipe is inserted into the reinforcing groove 303 of the other welding air pipe to form a structural interlocking limit. At the same time, the sealing ring 301 of one welding air pipe is inserted into the pipe body 1 of the other welding air pipe to enhance the airtightness of the connection. Finally, the welding ring 4 of the two welding air pipes is welded and fixed, thereby forming a strong and reliable overall pipeline structure.

[0041] When the ventilation system is working, some of the noise generated by the gas flowing inside the pipe 1 is absorbed by the fiber cotton 202 in the vibration damping component 2. At the same time, the vibration of the pipe wall caused by the gas flow is reduced because the asymmetrical distribution of the reinforcing ribs 201 on the outer wall of the pipe 1 disrupts the symmetry of the pipe wall, making it difficult to form a large-area synchronous resonance, thereby reducing the generation and propagation of vibration noise.

Claims

1. A fully welded stainless steel ventilation duct for ventilation, comprising a duct body (1), characterized in that, The end of the tube (1) is fixedly connected to a welding ring (4), and the end face of the welding ring (4) is provided with a reinforcing component (3); The reinforcement component (3) includes a reinforcement block (302) and a reinforcement groove (303) arranged circumferentially along the end face of the welding ring (4). The reinforcement block (302) and the reinforcement groove (303) are used to cooperate with the reinforcement groove (303) and reinforcement block (302) of another identical section of the ventilation pipe to form an interlocking structure.

2. The fully welded stainless steel ventilation duct for ventilation according to claim 1, characterized in that, The reinforcing block (302) and the reinforcing groove (303) are alternately spaced along the circumferential direction of the end face of the welding ring (4).

3. The fully welded stainless steel ventilation duct for ventilation according to claim 2, characterized in that, The reinforcing block (302) is a boss structure, and the reinforcing groove (303) is a groove structure that matches the boss structure.

4. The fully welded stainless steel ventilation duct for ventilation according to claim 1, characterized in that, The reinforcement component (3) also includes a sealing ring (301) disposed on the inner wall of the end of the tube (1).

5. A fully welded stainless steel ventilation duct for ventilation according to claim 4, characterized in that, The sealing ring (301) is an annular protrusion extending from the inner wall of the tube body (1) toward the center of the tube.

6. A fully welded stainless steel ventilation duct for ventilation according to claim 1, characterized in that, The outer wall of the tube (1) is also fixedly connected to a vibration damping component (2), which includes a plurality of asymmetrically distributed reinforcing ribs (201) and fiber cotton (202) filled between the reinforcing ribs (201).

7. A fully welded stainless steel ventilation duct for ventilation according to claim 6, characterized in that, The spacing between adjacent reinforcing ribs (201) is not equal.

8. A fully welded stainless steel ventilation duct for ventilation according to claim 1, characterized in that, The reinforcing component (3) and the tube body (1) are integrally formed.

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