Air leakage prevention pipeline connection structure

Abstract

The utility model relates to an anti-air-leakage pipeline connection structure, which belongs to the technical field of pipeline connection and comprises an output pipe, an air inlet pipe and a connecting pipe, the connecting pipe is positioned between the opposite sides of the output pipe and the air inlet pipe, and connecting flanges are fixed at the opposite ends of the output pipe and the air inlet pipe. The two ends of the connecting pipe are each fixedly provided with two butt joint flanges connected with the two connecting flanges, a plurality of connecting pieces used for connection are installed between the connecting flanges and the outer sides of the corresponding butt joint flanges, and the outer side of the connecting pipe is provided with an air leakage prevention assembly playing a sealing role. The air leakage prevention assembly comprises a first transition pipe fixed to the end, close to the output pipe, of the inner side of the connecting pipe, a first connecting frame fixed to the end, away from the output pipe, of the first transition pipe, and a second transition pipe fixed to the end, close to the air inlet pipe, of the inner side of the connecting pipe. According to the air leakage prevention pipeline connecting structure, the air leakage prevention effect can be achieved, and meanwhile installation work can be conveniently carried out.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline connection, and in particular to an air leakage-proof pipeline connection structure. Background Art

[0002] A pipeline refers to a device connected by pipes, pipe connectors, and valves for transporting gas, liquid, or fluid with solid particles. Among them, the pipeline used to transport gases such as air can be called ventilation ducts, gas pipelines, etc. When transporting gas, such pipelines need to be connected to the output end of gas transmission equipment such as blowers so that the gas can be transported efficiently.

[0003] According to a ventilation duct connection anti-air leakage structure disclosed in Chinese patent publication number CN219062717U, the patent greatly increases the sealing of the duct connection through the cooperation between the sealing tape, the sealing ring and the sealing member, thereby achieving the effect of preventing air leakage, which is very practical. However, during the implementation of the patent, it is necessary to connect the ends of the first duct and the second duct, then wrap the sealing tape around the outside of the connection in circles, and then put the sealing member on and move the sealing ring to connect and fix it. The operation process is very cumbersome and is not conducive to the convenient installation operation. In this regard, the present application provides a duct connection structure that prevents air leakage to solve the above problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the present application provides a pipe connection structure that prevents air leakage, which has the advantages of being able to prevent air leakage while facilitating installation work. It solves the shortcomings of the existing pipe connection anti-air leakage structure that the installation process is very cumbersome and not conducive to convenient installation work.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a pipe connection structure for preventing air leakage, comprising an output pipe, an air inlet pipe, and a connecting pipe, wherein the connecting pipe is located between opposite sides of the output pipe and the air inlet pipe, and the output pipe and the air inlet pipe are each fixed with a connecting flange at one end thereof, and two docking flanges respectively connected to the two connecting flanges are fixed at both ends of the connecting pipe, and a plurality of connecting pieces for connection are installed between the connecting flanges and the outer sides of the corresponding docking flanges, and an air leakage preventing assembly for sealing is installed on the outer side of the connecting pipe;

[0006] The air leakage prevention assembly includes a first transition pipe fixed on the inner side of the connecting pipe near one end of the output pipe, a first connecting frame fixed on the end of the first transition pipe away from the output pipe, a second transition pipe fixed on the inner side of the connecting pipe near one end of the air inlet pipe, a second connecting frame fixed on the side of the second transition pipe close to the air inlet pipe, two sealing grooves respectively opened on opposite sides of the two connecting flanges, a separating ring fixed on the inner side of the sealing groove and dividing the corresponding sealing groove into two spaces, four sealing rings respectively bonded and filled on the inner sides of the two sealing grooves, four extrusion rings respectively fixed on the opposite sides of the two docking flanges, and extrusion protrusions fixed on the outer side of the extrusion rings and evenly distributed.

[0007] By adopting the above technical solution, it can prevent air leakage and facilitate installation work.

[0008] Furthermore, the connecting member includes a bolt and a nut threadedly connected to the outer side of the bolt.

[0009] By adopting the above technical solution, installation and disassembly work is facilitated.

[0010] Furthermore, six connecting parts are provided between the outer sides of the connecting flange and the corresponding docking flange, the connecting flange and the corresponding docking flange are abutted against each other on their opposite sides, and six circular holes for the corresponding six bolts to pass through are opened on the left sides of the connecting flange and the docking flange.

[0011] By adopting the above technical solution, the connecting flange and the docking flange can be connected through the cooperation between the corresponding six bolts and nuts.

[0012] Furthermore, the end portion of the first transition pipe extends to the inner side of the output pipe, and the outer side of the first connection frame is fixedly connected to the inner side of the connection pipe.

[0013] By adopting the above technical solution, the gas inside the connecting pipe can be smoothly transported to the inside of the first transition pipe under the action of the arc-shaped inclined surface on the inner side of the first connecting frame.

[0014] Furthermore, the inner side of the first connecting frame is an arc-shaped inclined surface approaching the inner side of the connecting pipe, the second connecting frame is located on the inner side of the right docking flange, and the outer side of the second connecting frame is fixedly connected to the inner side of the right docking flange.

[0015] By adopting the above technical solution, the gas transported inside the air inlet pipe can be smoothly transported to the inside of the second connecting frame.

[0016] Furthermore, the inner side of the second connecting frame is an arc-shaped inclined surface approaching the inner side of the right docking flange, and the opposite sides of the two separation rings can respectively abut against the opposite sides of the two docking flanges.

[0017] By adopting the above technical solution, the docking flange can abut against the separation ring, thereby facilitating a sealing effect.

[0018] Furthermore, the four sealing rings are respectively located on the outside and inside of the two separation rings, the four extrusion rings are grouped into two, and each group of extrusion rings is located on the same side, and each group of extrusion rings is divided into an outer ring and an inner ring.

[0019] By adopting the above technical solution, a two-layer sealing effect is achieved.

[0020] Furthermore, the outer ring abuts against the sealing ring on the outer side of the corresponding partition ring, and the inner ring abuts against the sealing ring on the inner side of the corresponding partition ring.

[0021] By adopting the above technical solution, the sealing ring can normally perform the abutment sealing function.

[0022] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0023] The air leakage-proof pipe connection structure can achieve the air leakage-proof effect and facilitate the installation work through the coordinated use of the connecting pipe, the connecting flange, the docking flange and the air leakage-proof component, so that the connection point after the pipe is connected can be effectively sealed to prevent the leakage of the gas flowing inside, thereby improving the effect and efficiency of gas transportation. At the same time, it can also play a transition role for the circulating gas inside, so that the gas can be transported as smoothly as possible when passing through the connection point, reducing the resistance during passage, ensuring the quality of transportation, and effectively improving the practical performance of the pipe connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of this application;

[0025] Figure 2 For this application structure Figure 1 A partial enlarged schematic diagram of the middle part A;

[0026] Figure 3 For this application structure Figure 1 A three-dimensional schematic diagram of the middle connecting flange connection structure;

[0027] Figure 4 For this application structure Figure 3 Schematic diagram of the left side.

[0028] In the figure: 1. output pipe; 2. air inlet pipe; 3. connecting pipe; 401. connecting flange; 402. docking flange; 500. air leakage prevention assembly; 501. first transition pipe; 502. first connecting frame; 503. second transition pipe; 504. second connecting frame; 505. sealing groove; 506. separating ring; 507. sealing ring; 508. extrusion ring; 509. extrusion protrusion; 601. bolt; 602. nut. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] See also Figures 1 to 4 The present application provides a technical solution: a pipe connection structure for preventing air leakage, comprising an output pipe 1, an air inlet pipe 2, and a connecting pipe 3. The connecting pipe 3 is located between the output pipe 1 and the air inlet pipe 2 on opposite sides. The output pipe 1 and the air inlet pipe 2 are both fixed with connecting flanges 401 on opposite ends. Two docking flanges 402 are fixed at both ends of the connecting pipe 3, which are respectively connected to the two connecting flanges 401. Several connecting pieces are installed between the outer sides of the connecting flanges 401 and the corresponding docking flanges 402 for connection. An air leakage preventing component 500 is installed on the outer side of the connecting pipe 3 to perform a sealing function.

[0031] In the above-mentioned embodiment, through the coordinated use of the connecting pipe 3, the connecting flange 401, the docking flange 402 and the anti-air leakage component 500, it can achieve the effect of preventing air leakage while facilitating the installation work, so that the connection after the pipeline is connected can be effectively sealed to prevent the internal flowing gas from leaking, thereby improving the effect and efficiency of gas transportation. At the same time, it can also play a transitional role in the internal circulating gas, so that the gas can be transported as smoothly as possible when passing through the connection, reducing the resistance during passage, ensuring the quality of transportation, and effectively improving the practical performance of the pipeline connection structure.

[0032] In this embodiment, the anti-air leakage component 500 is a structure used to perform a sealing function to prevent air leakage at the pipe connection.

[0033] like Figure 2 、 Figure 3 and Figure 4As shown, the air leakage prevention component 500 includes a first transition pipe 501 fixed on the inner side of the connecting pipe 3 near one end of the output pipe 1, a first connecting frame 502 fixed on the first transition pipe 501 away from the end of the output pipe 1, a second transition pipe 503 fixed on the inner side of the connecting pipe 3 near one end of the air inlet pipe 2, a second connecting frame 504 fixed on the second transition pipe 503 near the side of the air inlet pipe 2, two sealing grooves 505 respectively opened on the opposite sides of the two connecting flanges 401, a separating ring 506 fixed on the inner side of the sealing groove 505 and dividing the corresponding sealing groove 505 into two spaces, four sealing rings 507 respectively bonded and filled on the inner sides of the two sealing grooves 505, four extrusion rings 508 respectively fixed on the opposite sides of the two docking flanges 402, and extrusion protrusions 509 fixed on the outer side of the extrusion ring 508 and evenly distributed.

[0034] It should be noted that the end of the first transition pipe 501 extends to the inner side of the output pipe 1, the outer side of the first connecting frame 502 is fixedly connected to the inner side of the connecting pipe 3, and the inner side of the first connecting frame 502 is an arc-shaped inclined surface approaching the inner side of the connecting pipe 3, so that the gas inside the connecting pipe 3 can be smoothly transported to the interior of the first transition pipe 501 under the action of the arc-shaped inclined surface on the inner side of the first connecting frame 502, and then transported to the interior of the output pipe 1 through the first transition pipe 501.

[0035] In addition, the second connecting frame 504 is located on the inner side of the right docking flange 402, and the outer side of the second connecting frame 504 is fixedly connected to the inner side of the right docking flange 402. The inner side of the second connecting frame 504 is an arc-shaped inclined surface approaching the inner side of the right docking flange 402, so that the gas transported inside the air inlet pipe 2 can smoothly pass through the second transition pipe 503 under the action of the inner arc-shaped inclined surface of the second connecting frame 504 and enter the interior of the connecting pipe 3.

[0036] At the same time, the opposite sides of the two separating rings 506 can be respectively abutted against the opposite sides of the two docking flanges 402, and the four sealing rings 507 are respectively located on the outside and inside of the two separating rings 506. The four extrusion rings 508 are grouped into two, and each group of extrusion rings 508 is located on the same side. Each group of extrusion rings 508 is divided into an outer ring and an inner ring. The outer ring abuts against the sealing ring 507 on the outside of the corresponding separating ring 506, and the inner ring abuts against the sealing ring 507 on the inside of the corresponding separating ring 506. The sealing ring 507 is covered on the outside of the corresponding extrusion ring 508, so that the extrusion ring 508 can abut against the corresponding sealing ring 507 and seal the space through the covering effect of the sealing ring 507. At the same time, under the action of the extrusion protrusion 509, the contact effect can be further improved, so that the sealing effect is further improved. Among them, the sealing ring 507 can be a rubber gasket, which can play an effective sealing role.

[0037] In this embodiment, the connecting piece is a structure used to connect and fix the connecting flange 401 and the docking flange 402 .

[0038] like Figure 1 As shown, the connecting member includes a bolt 601 and a nut 602 threadedly connected to the outer side of the corresponding bolt 601.

[0039] It should be noted that six connecting parts are provided between the outer sides of the connecting flange 401 and the corresponding docking flange 402. The opposite sides of the connecting flange 401 and the corresponding docking flange 402 are abutted against each other. The left sides of the connecting flange 401 and the docking flange 402 are provided with six circular holes for the corresponding six bolts 601 to pass through, so that the connecting flange 401 and the docking flange 402 can be connected through the cooperation between the corresponding six bolts 601 and the nuts 602. Among them, rubber pads can be pasted on the opposite sides of the connecting flange 401 and the docking flange 402 to further improve the stability and sealing of the installation.

[0040] The working principle of the above embodiment is:

[0041] When performing pipeline connection work, the two docking flanges 402 are respectively abutted against the opposite sides of the two connecting flanges 401, and the first transition pipe 501 is inserted into the interior of the output pipe 1, and the extrusion ring 508 is abutted against the outer side of the corresponding sealing ring 507. Under the action of the extrusion protrusion 509, the contact area can be increased, so that the overall pressing effect is improved. Finally, the connecting flange 401 and the corresponding docking flange 402 are connected and fixed by the coordinated connection of the bolt 601 and the nut 602 to complete the pipeline connection work. The gas output through the air inlet pipe 2 is transported to the interior of the connecting pipe 3 through the second transition pipe 503 under the action of the second connecting frame 504, and then enters the interior of the first transition pipe 501 through the first connecting frame 502, and is finally transported to the interior of the output pipe 1 for transportation, completing the smooth transportation of the internal gas.

[0042] Compared with the existing technology, the air leakage-proof pipe connection structure, through the coordinated use of the connecting pipe 3, the connecting flange 401, the docking flange 402 and the air leakage-proof component 500, can not only play the role of air leakage prevention but also facilitate the installation work, so that the connection after the pipe is connected can be effectively sealed to prevent the internal flowing gas from leaking, thereby improving the effect and efficiency of gas transportation. At the same time, it can also play a transitional role in the internal circulating gas, so that the gas can be transported as smoothly as possible when passing through the connection, reducing the resistance during passage, ensuring the quality of transportation, thereby effectively improving the practical performance of the pipe connection structure, and solving the shortcomings of the existing air leakage-proof structure for pipe connection, which is very cumbersome to install and not conducive to convenient installation work.

Claims

1. A pipe connection structure for preventing air leakage, comprising an output pipe (1), an air inlet pipe (2) and a connecting pipe (3), characterized in that: The connecting pipe (3) is located between the output pipe (1) and the air inlet pipe (2) on opposite sides. The output pipe (1) and the air inlet pipe (2) are both fixed with connecting flanges (401) at opposite ends. Two docking flanges (402) connected to the two connecting flanges (401) are fixed at both ends of the connecting pipe (3). A plurality of connecting pieces for connection are installed between the outer sides of the connecting flanges (401) and the corresponding docking flanges (402). An air leakage prevention component (500) having a sealing function is installed on the outer side of the connecting pipe (3); The air leakage prevention assembly (500) comprises a first transition pipe (501) fixed on the inner side of the connecting pipe (3) near one end of the output pipe (1), a first connecting frame (502) fixed on the end of the first transition pipe (501) away from the output pipe (1), a second transition pipe (503) fixed on the inner side of the connecting pipe (3) near one end of the air inlet pipe (2), a second connecting frame (504) fixed on the side of the second transition pipe (503) near the air inlet pipe (2), two sealing grooves (505) respectively provided on opposite sides of the two connecting flanges (401), a separating ring (506) fixed on the inner side of the sealing groove (505) and dividing the corresponding sealing groove (505) into two spaces, four sealing rings (507) respectively bonded to and filled in the inner sides of the two sealing grooves (505), four extrusion rings (508) respectively fixed on opposite sides of the two docking flanges (402), and extrusion protrusions (509) fixed on the outer side of the extrusion ring (508) and evenly distributed.

2. The air leakage-proof pipe connection structure according to claim 1, characterized in that: The connecting member comprises a bolt (601) and a nut (602) threadedly connected to the outer side of the bolt (601).

3. The air leakage-proof pipe connection structure according to claim 2, characterized in that: Six connecting pieces are provided between the outer sides of the connecting flange (401) and the corresponding docking flange (402). The connecting flange (401) and the corresponding docking flange (402) are in contact with each other on their opposite sides. The left sides of the connecting flange (401) and the docking flange (402) are provided with six circular holes for the corresponding six bolts (601) to pass through.

4. The air leakage-proof pipe connection structure according to claim 1, characterized in that: The end of the first transition pipe (501) extends to the inner side of the output pipe (1), and the outer side of the first connection frame (502) is fixedly connected to the inner side of the connection pipe (3).

5. The air leakage-proof pipe connection structure according to claim 1, characterized in that: The inner side of the first connecting frame (502) is an arc-shaped inclined surface approaching the inner side of the connecting pipe (3), the second connecting frame (504) is located on the inner side of the right docking flange (402), and the outer side of the second connecting frame (504) is fixedly connected to the inner side of the right docking flange (402).

6. The air leakage-proof pipe connection structure according to claim 1, characterized in that: The inner side of the second connection frame (504) is an arc-shaped inclined surface approaching the inner side of the right docking flange (402), and the opposite sides of the two separation rings (506) can respectively abut against the opposite sides of the two docking flanges (402).

7. The air leakage-proof pipe connection structure according to claim 1, characterized in that: The four sealing rings (507) are respectively located on the outside and inside of the two separation rings (506); the four extrusion rings (508) are grouped in pairs, and each group of extrusion rings (508) is located on the same side; each group of extrusion rings (508) is divided into an outer ring and an inner ring.

8. The air leakage-proof pipe connection structure according to claim 7, characterized in that: The outer ring abuts against the sealing ring (507) on the outer side of the corresponding separation ring (506), and the inner ring abuts against the sealing ring (507) on the inner side of the corresponding separation ring (506).

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