A duct connection device for a building heating, ventilation and air conditioning duct

Abstract

The utility model relates to pipeline connection technical field, more specifically, especially relates to a pipeline connection device for building heating and ventilation heating pipeline. Including pipe body, connecting sleeve, sealing ring and buffer mechanism, two pipe bodies are connected through connecting sleeve, two sealing rings are located in the inside of the both ends of connecting sleeve respectively, the outside wall of sealing ring is equipped with first annular protruding, the inner wall of connecting sleeve is equipped with first annular groove in the position of first annular protruding, first annular protruding and first annular groove are matched, sealing ring is fixedly connected with the end part of pipe body, buffer mechanism includes a plurality of buffer springs that are evenly distributed in the inside of connecting sleeve, one end of buffer spring is fixedly connected with the inner side wall of sealing ring, the other end is fixedly connected with the inner wall of connecting sleeve. When the pipeline is deformed due to thermal expansion and cold shrink, the buffer spring can play a buffering effect, absorb the deformation energy of the pipeline, avoid the stress concentration at the connecting place, prolong the service life of the pipeline and the connecting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and more specifically, to a pipe connection device for building heating, ventilation and air conditioning (HVAC) pipes. Background Technology

[0002] Heating, ventilation, and air conditioning (HVAC) is an integral part of building construction. It encompasses three aspects: heating, ventilation, and air conditioning. This field also trains senior engineering and management personnel to work in the areas of building environmental control, building energy conservation, and intelligent building facilities. Graduates will possess the ability to design, construct, commission, and manage public facility systems such as air conditioning, heating, ventilation, building water supply and drainage, and gas supply, as well as building thermal energy supply systems and building energy conservation, and to develop building automation system solutions.

[0003] Heating systems consist of a large number of pipes and heating devices. The transmission pipelines are usually spliced ​​together to form a network. Existing transmission pipelines are affected by thermal expansion and contraction, resulting in a short service life of the pipelines. Utility Model Content

[0004] This invention aims to overcome the problem of short service life of pipelines and provide a technical solution that can solve the above problems.

[0005] A pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes includes a pipe body, a connecting sleeve, a sealing ring, and a buffer mechanism. Two pipe bodies are connected by the connecting sleeve. Two sealing rings are located inside the two ends of the connecting sleeve. The outer wall of the sealing ring is provided with a first annular protrusion. The inner wall of the connecting sleeve is provided with a first annular groove corresponding to the position of the first annular protrusion. The first annular protrusion and the first annular groove are adapted to each other. The sealing ring is fixedly connected to the end of the pipe body. The buffer mechanism includes a plurality of buffer springs evenly distributed inside the connecting sleeve. One end of the buffer spring is fixedly connected to the inner wall of the sealing ring, and the other end is fixedly connected to the inner wall of the connecting sleeve.

[0006] Furthermore, a second annular protrusion is fixedly provided at the outer end of the tube body, and a second annular groove is provided at the end of the sealing ring near the tube body corresponding to the position of the second annular protrusion, with the second annular protrusion and the second annular groove being adapted to each other.

[0007] Furthermore, the inner wall of the connecting sleeve is provided with an internal thread, and the outer wall of the sealing ring is provided with an external thread, and the connecting sleeve and the sealing ring are threadedly connected.

[0008] Furthermore, the connecting sleeve has a hollow cylindrical structure with openings at both ends.

[0009] Furthermore, the sealing rings are symmetrically arranged inside both ends of the connecting sleeve.

[0010] Furthermore, it also includes a connecting plate and bolts. The connecting plate is fixedly installed at the end of the buffer spring near the first annular protrusion, and the connecting plate is connected to the first annular protrusion by bolts.

[0011] Furthermore, both the first and second annular protrusions are welded to the sealing ring and the pipe body.

[0012] Furthermore, the outer walls at both ends of the connecting sleeve are provided with external threads, and also include two fastening nuts, which are adapted to the external threads at both ends of the connecting sleeve.

[0013] Furthermore, the buffer spring is a helical compression spring, and the material of the buffer spring is stainless steel.

[0014] Furthermore, the inner wall of the connecting sleeve is provided with an anti-corrosion coating.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Compared with the prior art, the pipe connection device for building heating, ventilation and air conditioning (HVAC) pipes of this utility model has a buffer mechanism. The buffer mechanism includes multiple buffer springs evenly distributed inside the connection sleeve. One end of the buffer spring is fixedly connected to the inner wall of the sealing ring, and the other end is fixedly connected to the inner wall of the connection sleeve. When the pipe deforms due to thermal expansion and contraction, the buffer spring can play a buffering role, absorb the deformation energy of the pipe, avoid stress concentration at the connection, and extend the service life of the pipe and the connection mechanism.

[0017] 2. Compared with the prior art, the pipe connection device for building heating, ventilation and air conditioning pipes of this utility model sets up sealing rings. Two sealing rings seal two pipes to be connected respectively. The outer wall of the sealing ring is provided with a first annular protrusion, and the inner wall of the connecting sleeve is provided with a first annular groove corresponding to the position of the first annular protrusion. The first annular protrusion and the first annular groove are adapted to each other. The first annular protrusion of the sealing ring and the first annular groove of the connecting sleeve cooperate to improve the sealing performance of the pipe connection. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a partial structural schematic diagram of the pipe connection device for building heating, ventilation and air conditioning (HVAC) pipes in this utility model.

[0020] Figure 2 This is a schematic diagram of the structure after the tubes are connected in this utility model.

[0021] Figure 3This is a partial structural diagram of the buffer spring in this utility model.

[0022] Figure 4 This is a partial structural diagram of the buffer spring in this utility model.

[0023] In the figure: 1. Pipe body; 2. Connecting sleeve; 3. First annular groove; 4. Sealing ring; 5. First annular protrusion; 6. Buffer mechanism; 601. Buffer spring; 602. Connecting plate; 603. Bolt; 7. Second annular groove; 8. Second annular protrusion. Detailed Implementation

[0024] 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.

[0025] like Figure 1 , 2 As shown, the pipe connection device for building heating, ventilation and air conditioning (HVAC) pipes in this embodiment includes a pipe body 1, a connecting sleeve 2, a sealing ring 4, and a buffer mechanism 6. The two pipe bodies 1 are connected by the connecting sleeve 2. The two sealing rings 4 are symmetrically arranged inside the two ends of the connecting sleeve 2. The connecting sleeve 2 has a hollow cylindrical structure with open ends.

[0026] In this utility model, such as Figure 1 As shown, a first annular protrusion 5 is welded to the outer wall of the sealing ring 4, and a first annular groove 3 is provided on the inner wall of the connecting sleeve 2 corresponding to the position of the first annular protrusion 5. The first annular protrusion 5 and the first annular groove 3 are adapted to each other. An internal thread is provided on the inner wall of the connecting sleeve 2, and an external thread is provided on the outer wall of the sealing ring 4. An anti-corrosion coating is provided on the inner wall of the connecting sleeve 2, which improves the corrosion resistance of the connecting sleeve 2 and ensures the long-term stable use of the connecting device. The connecting sleeve 2 and the sealing ring 4 are threadedly connected.

[0027] In this utility model, two sealing rings 4 seal two pipes to be connected respectively. The outer wall of the sealing ring 4 is provided with a first annular protrusion 5, and the inner wall of the connecting sleeve 2 is provided with a first annular groove 3 corresponding to the position of the first annular protrusion 5. The first annular protrusion 5 and the first annular groove 3 are adapted to each other. The first annular protrusion 5 of the sealing ring 4 and the first annular groove 3 of the connecting sleeve 2 cooperate to improve the sealing performance of the pipe connection.

[0028] In this utility model, such as Figure 1As shown, the sealing ring 4 is connected to the end of the tube body 1. A second annular protrusion 8 is welded to the outer end of the tube body 1, and a second annular groove 7 is provided inside the sealing ring 4 near the tube body 1 at the position corresponding to the second annular protrusion 8. The second annular protrusion 8 and the second annular groove 7 are adapted to each other.

[0029] In this invention, the sealing ring 4 is made of elastic rubber material, possessing good elasticity and sealing performance, and the second annular groove 7 of the sealing ring 4 is provided with anti-slip texture. The anti-slip texture in the second annular groove 7 further enhances the sealing effect, effectively preventing leakage at the connection point.

[0030] In this utility model, such as Figure 3 , 4 As shown, the buffer mechanism 6 includes multiple buffer springs 601 evenly distributed inside the connecting sleeve 2. One end of the buffer spring 601 is welded to the inner wall of the sealing ring 4, and the other end is connected to the inner wall of the connecting sleeve 2. The connecting plate 602 is welded to one end of the buffer spring 601 near the first annular protrusion 5. The connecting plate 602 and the first annular protrusion 5 are connected by bolts 603. Specifically, the buffer spring 601 is a helical compression spring, and the material of the buffer spring 601 is stainless steel, which has the characteristics of corrosion resistance and high strength.

[0031] In this invention, when the pipeline deforms due to thermal expansion and contraction, the buffer spring 601 can play a buffering role, absorb the deformation energy of the pipeline, avoid stress concentration at the connection, and extend the service life of the pipeline and the connection mechanism.

[0032] In this utility model, such as Figure 2 As shown, the outer walls of both ends of the connecting sleeve 2 are provided with external threads, and it also includes two fastening nuts (not shown in the figure). The fastening nuts (not shown in the figure) are adapted to the external threads at both ends of the connecting sleeve 2. This facilitates quick installation and disassembly of the connecting device, reduces construction difficulty and cost, and improves construction efficiency.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes, characterized in that: The device includes a tube body (1), a connecting sleeve (2), a sealing ring (4), and a buffer mechanism (6). The two tube bodies (1) are connected by the connecting sleeve (2). The two sealing rings (4) are located inside the two ends of the connecting sleeve (2). The outer wall of the sealing ring (4) is provided with a first annular protrusion (5). The inner wall of the connecting sleeve (2) is provided with a first annular groove (3) corresponding to the position of the first annular protrusion (5). The first annular protrusion (5) and the first annular groove (3) are adapted to each other. The sealing ring (4) is fixedly connected to the end of the tube body (1). The buffer mechanism (6) includes a plurality of buffer springs (601) evenly distributed inside the connecting sleeve (2). One end of the buffer spring (601) is fixedly connected to the inner wall of the sealing ring (4), and the other end is fixedly connected to the inner wall of the connecting sleeve (2).

2. The pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes according to claim 1, characterized in that: The outer end of the tube body (1) is fixedly provided with a second annular protrusion (8), and the sealing ring (4) is provided with a second annular groove (7) at the end of the tube body (1) corresponding to the position of the second annular protrusion (8). The second annular protrusion (8) and the second annular groove (7) are adapted to each other.

3. A pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes according to claim 2, characterized in that: The inner wall of the connecting sleeve (2) is provided with an internal thread, and the outer wall of the sealing ring (4) is provided with an external thread. The connecting sleeve (2) and the sealing ring (4) are threadedly connected.

4. A pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes according to claim 3, characterized in that: The connecting sleeve (2) has a hollow cylindrical structure with openings at both ends.

5. A pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes according to claim 4, characterized in that: The sealing rings (4) are symmetrically arranged inside both ends of the connecting sleeve (2).

6. A pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes according to claim 5, characterized in that: It also includes a connecting plate (602) and a bolt (603). The connecting plate (602) is fixedly disposed at one end of the buffer spring (601) near the first annular protrusion (5). The connecting plate (602) and the first annular protrusion (5) are connected by the bolt (603).

7. A pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes according to claim 6, characterized in that: The first annular protrusion (5) and the second annular protrusion (8) are welded to the sealing ring (4) and the tube body (1).

8. A pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes according to claim 7, characterized in that: The outer walls of both ends of the connecting sleeve (2) are provided with external threads, and also include two fastening nuts, which are adapted to the external threads at both ends of the connecting sleeve (2).

9. A pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes according to claim 8, characterized in that: The buffer spring (601) is a helical compression spring, and the material of the buffer spring (601) is stainless steel.

10. A pipe connection device for building heating, ventilation, and air conditioning (HVAC) pipes according to claim 9, characterized in that: The inner wall of the connecting sleeve (2) is provided with an anti-corrosion coating.

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