Heating and ventilation construction pipeline connecting structure

Abstract

The embodiment of the utility model provides a heating and ventilation construction pipeline connecting structure which comprises two connecting flanges used for being fixed to the ends of pipelines to be connected. The sealing ring is arranged between the two connecting flanges and used for preventing medium leakage; the elastic supporting piece surrounds the sealing ring, one end of the elastic supporting piece is connected with one connecting flange, and the other end of the elastic supporting piece is connected with the other connecting flange; the pre-tightening device is arranged on the connecting flange and used for providing pre-tightening force; and the locking bolt is used for fixing the two connecting flanges together. Through the scheme of the embodiment, the problem that the sealing performance is gradually reduced due to the fact that the sealing material of the connecting part is repeatedly extruded and stretched when the pressure inside and outside the pipeline is unbalanced can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building equipment installation engineering, in particular to a heating and ventilation construction pipeline connection structure. BACKGROUND

[0002] The heating and ventilation construction pipeline connection structure is a structure specially used for connecting pipelines in a building heating and ventilation system. This connection structure aims to ensure the stability and sealing of the connection between pipelines to prevent air or liquid leakage. However, due to the imbalance of pressure inside and outside the pipeline during actual operation, it can cause the sealing material of the connection part to be repeatedly squeezed and stretched. Over time, this mechanical stress gradually damages the elasticity of the sealing material, causing its sealing performance to gradually decline, and eventually leading to leakage problems. SUMMARY

[0003] Therefore, the present application provides a heating and ventilation construction pipeline connection structure to at least partially solve the problems in the prior art.

[0004] The heating and ventilation construction pipeline connection structure of the present application comprises:

[0005] Two connecting flanges for fixing to the end of the pipelines to be connected;

[0006] A sealing ring arranged between the two connecting flanges for preventing medium leakage;

[0007] An elastic support arranged around the sealing ring, one end of which is connected to one of the connecting flanges, and the other end is connected to the other connecting flange;

[0008] A pre-tightening device arranged on the connecting flange for providing a pre-tightening force;

[0009] A locking bolt for fixing the two connecting flanges together; wherein

[0010] The sealing ring adopts a multi-layer composite structure, including an outer layer of elastic material and an inner layer of high-strength fiber material;

[0011] The pre-tightening device includes an adjusting screw and a sleeve, the sleeve is fixed on the connecting flange, the adjusting screw passes through the sleeve and presses the sealing ring, and the pre-tightening force is adjusted by adjusting the position of the adjusting screw; and

[0012] The adjusting screw is provided with a scale mark, and the scale mark is used to display the size of the pre-tightening force.

[0013] In a specific embodiment, the inner side edge of the connecting flange is provided with a plurality of grooves, the number and position of the grooves correspond to the locking bolt, to ensure that the inner side of the connecting flange tightly fits when the locking bolt is tightened.

[0014] In one embodiment, the outer side of the connecting flange is provided with a reinforcing ring, which surrounds the connecting flange.

[0015] In one embodiment, the connecting flange is welded or threaded with the reinforcing ring.

[0016] In one embodiment, the elastic support is a coil spring, and the two ends of the coil spring are fixedly connected with the two connecting flanges respectively.

[0017] In one embodiment, the outer diameter of the coil spring is slightly smaller than the inner diameter of the connecting flange.

[0018] In one embodiment, the coil spring is further provided with a layer of anticorrosive coating.

[0019] The embodiments of the present disclosure provide a heating and ventilation construction pipeline connecting structure, which comprises two connecting flanges for being fixed at the end portions of pipelines to be connected; a sealing ring arranged between the two connecting flanges and used for preventing medium leakage; an elastic support arranged around the sealing ring, one end of which is connected with one of the connecting flanges and the other end of which is connected with the other connecting flange; a pre-tightening device arranged on the connecting flange and used for providing a pre-tightening force; and a locking bolt used for fixing the two connecting flanges together. Through the scheme of the embodiments of the present disclosure, the problem that the sealing performance gradually decreases due to repeated extrusion and stretching of the sealing material of the connecting portion when the internal and external pressures of the pipeline are unbalanced can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In the drawings, like reference numerals designate like elements throughout the several views, unless otherwise specified. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the application. It should be understood that the drawings are merely depictions of some embodiments of the application and should not be construed as limiting the scope of the application.

[0021] Figure 1 It is a schematic view of the axial side structure of the connecting flange of the present application;

[0022] Figure 2 It is a schematic view of the axial side structure of the connecting flange of the present application; Figure 1 It is a schematic view of the side cross-sectional structure of the elastic sealing ring of the present application;

[0023] Figure 3 It is a schematic view of the axial side structure of the connecting flange of the present application; Figure 1 It is an enlarged view of the top cross-sectional structure of the coil spring of the present application;

[0024] Figure 4 It is a schematic view of the axial side structure of the connecting flange of the present application; Figure 1 It is a schematic view of the axial side structure of the connecting flange of the present application;

[0025] In the figure: 1, connecting flange; 2, sealing ring; 3, elastic support; 4, pre-tightening device; 5, locking bolt; 6, groove; 7, reinforcing ring; 8, layer of elastic material; 9, layer of high-strength fiber material; 10, coil spring; 11, anticorrosive coating; 12, adjusting screw; 13, sleeve; 14, scale mark DETAILED DESCRIPTION

[0026] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying that there is any such relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0027] As shown in Figure 1 , the heating and ventilation construction pipeline connection structure of the present application includes a connecting flange 1, a sealing ring 2, an elastic support 3 (see Figure 3 ), a pre-tightening device 4, and a locking bolt 5, which effectively solves the problem of sealing performance degradation of the pipeline connection part when the internal and external pressures are unbalanced during heating and ventilation construction. Specifically, the structure provides a stable and reliable pipeline connection method through the cooperation of each component.

[0028] The connecting flange 1 is used to be fixed at the end of the pipeline to be connected. Each pipeline to be connected is fixed with a connecting flange 1 at the end, which has a certain thickness and strength to ensure that it can withstand the internal fluid pressure and external mechanical force of the pipeline. The connecting flange 1 is usually made of high-strength materials such as cast iron, stainless steel, or carbon steel, which has high corrosion resistance and mechanical properties.

[0029] The sealing ring 2 is arranged between the two connecting flanges 1 to prevent leakage of the medium in the pipeline. The sealing ring 2 is generally made of materials that are resistant to heat, pressure, and corrosion, such as nitrile rubber, ethylene-propylene-diene rubber, or fluororubber. The shape of the sealing ring 2 can be adjusted according to the specific design of the connecting flange 1, and there are many forms such as O-ring, square ring, and flat ring to ensure good sealing effect.

[0030] The elastic support 3 is arranged around the sealing ring 2, one end of which is connected with one of the connecting flanges 1, and the other end is connected with the other connecting flange 1. The main function of the elastic support 3 is to provide additional support when the internal and external pressures of the pipeline are unbalanced, thereby reducing the deformation of the sealing ring 2 and prolonging its service life. The support can be made of materials with elastic properties such as metal springs, plastics, or composite materials, ensuring that it can quickly return to its original state under pressure and maintain the sealing effect.

[0031] The pre-tightening device 4 is arranged on the connecting flange 1 and maintains the sealing performance of the sealing ring 2 by adjusting the pre-tightening force. The pre-tightening device 4 is generally composed of an adjusting nut, a spring, and other auxiliary components, and the size of the pre-tightening force can be accurately controlled by rotating the adjusting nut. This adjustment method can ensure that even if the external conditions change during the operation of the pipeline system, a stable sealing state can be maintained, reducing the risk of leakage.

[0032] The locking bolt 5 is used to fix the two connecting flanges 1 together to ensure the stability of the pipeline connection. The locking bolt passes through the hole on the connecting flange 1 and cooperates with the nut to firmly connect the two connecting flanges 1 together. In order to increase the reliability of the connection, multiple locking bolts are usually used, and the tightening degree of each bolt should be consistent during installation to avoid affecting the overall sealing effect due to local looseness.

[0033] Through the organic combination of the above-mentioned components, the pipeline connection structure for heating and ventilation construction provided by the present application can effectively solve the problem that the sealing material of the connection part is repeatedly squeezed and stretched when the internal and external pressures of the pipeline are unbalanced, leading to a gradual decline in sealing performance. Specifically, the use of the elastic support 3 and the pre-tightening device 4 can timely adjust and compensate the pressure distribution of the sealing ring 2 when the external pressure changes, ensuring that the sealing material is always in good working condition, thereby prolonging the service life of the pipeline connection part and improving the safety and reliability of the entire system. In addition, through the adjustment function of the pre-tightening device 4, the sealing effect can also be fine-tuned during installation, ensuring that each connection can achieve the best sealing state.

[0034] Continuing to refer to Figure 1 In one embodiment, the inner side edge of the connecting flange 1 of the pipeline connection structure for heating and ventilation construction provided by the present application is provided with a plurality of grooves 6, the number and position of which correspond to the locking bolts. This design ensures that when the locking bolts are tightened, the inner side of the connecting flange 1 can be tightly fitted, thereby reducing the sliding of the sealing ring 2 when the internal and external pressures are unbalanced. The grooves 6 on the inner side edge of the connecting flange 1 not only provide mounting positions for the locking bolts, but also improve the overall stability and reliability of the connection structure through mechanical cooperation.

[0035] In one embodiment, the specific structure of each groove 6 can be designed according to the specifications of the locking bolt to ensure a good match between the groove 6 and the locking bolt. For example, the groove 6 can be square or circular, and the depth and width can be adjusted according to actual needs. The positions of the grooves 6 are usually distributed circumferentially on the inner side of the connecting flange 1 to evenly distribute the locking force. In this way, when the locking bolt is tightened, the groove 6 can effectively guide the position of the bolt, ensuring that the inner side of the connecting flange 1 is flat and gap-free, further improving the sealing performance.

[0036] In one embodiment, during installation, the locking bolt is inserted into the groove 6 and tightened, and at this time, the groove 6 on the inner side edge of the connecting flange 1 guides the position of the bolt, so that the bolt evenly distributes the locking force, ensuring that the inner side of the connecting flange 1 is tightly fitted. Specifically, by pre-machining appropriate grooves 6 on the inner side edge of the connecting flange 1, the position and size of each groove 6 can be matched with the locking bolt. In this way, when the locking bolt is tightened, the groove 6 can effectively prevent the connecting flange 1 from deforming and ensure the stable position of the sealing ring 2.

[0037] In one embodiment, the outer side of the connecting flange 1 of the heating and ventilation construction pipeline connecting structure of the present application is provided with a reinforcing ring 7. The reinforcing ring 7 surrounds the connecting flange 1 and increases the overall strength of the connecting flange 1, which helps to reduce the deformation of the connecting flange 1 that may occur when the internal and external pressures are not balanced. The connecting flange 1 and the reinforcing ring 7 can be combined by welding or threaded connection to ensure their close combination and enhance the stability of the entire connecting structure. The shape of the reinforcing ring 7 can be circular or other shapes that match the outer contour of the connecting flange 1, and the material of the reinforcing ring 7 can be the same as that of the connecting flange 1 or a material with higher strength and toughness.

[0038] For example, when the connecting flange 1 is subjected to internal fluid pressure or external load, the reinforcing ring 7 can evenly share the force to prevent the connecting flange 1 from being locally stressed too much and causing plastic deformation. The reinforcing ring 7 can be achieved by pre-welding a metal ring on the outside of the connecting flange 1, or it can be designed in a detachable form for easy installation and maintenance on site. Specifically, the detachable reinforcing ring 7 can be fixed to the connecting flange 1 by multiple bolts to achieve quick disassembly. In this structure, the connection points between the reinforcing ring 7 and the connecting flange 1 should be as many as possible to ensure uniform transmission of force.

[0039] In one embodiment, as shown in Figure 2As shown, the sealing ring 2 of the heating and ventilation construction pipeline connection structure of the present application adopts a multi-layer composite structure. The sealing ring 2 includes an outer layer of an elastic material layer 8 and an inner layer of a high-strength fiber material layer 9. The outer layer of the elastic material layer 8 is selected from silicone rubber or fluororubber, and these two materials have excellent high-temperature resistance, corrosion resistance and wear resistance, which can effectively cope with frequent deformation caused by internal and external pressure imbalance. The inner layer of the high-strength fiber material layer 9 is selected from aramid fiber or glass fiber, which can improve the overall rigidity of the sealing ring 2 while avoiding damage to the inside of the pipeline.

[0040] Specifically, the outer layer of the elastic material layer 8 is tightly attached to the outside of the sealing ring 2 and is tightly combined with the inner layer of the high-strength fiber material layer 9 through injection molding or vulcanization process. This combination ensures that the sealing ring 2 still maintains good sealing performance under external force. The inner layer of the high-strength fiber material layer 9 is embedded inside the sealing ring 2 to form a reinforcing structure. The high-strength fiber material layer 9 not only improves the overall rigidity of the sealing ring 2, but also maintains a certain flexibility, so that the sealing ring 2 can remain stable in different use environments. For example, when using silicone rubber as the outer layer material, it can be coated on the inner layer of the high-strength fiber material layer 9 and subjected to vulcanization treatment to achieve firm combination of the two. Similarly, when using aramid fiber as the inner layer material, the aramid fiber can be woven into a mesh structure, and then the silicone rubber or other elastic material can be coated on the outside of the mesh structure through the injection molding process.

[0041] Reference Figure 3 In one embodiment, the heating and ventilation construction pipeline connection structure of the present application is characterized in that the elastic support 3 in the structure is a spiral spring 10. The two ends of the spiral spring 10 are fixedly connected with the two connection flanges 1, respectively, which can quickly provide support when the internal and external pressures of the pipeline change, thereby effectively reducing the pressure load of the sealing ring 2. In order to ensure the smoothness of the inside of the pipeline, the outer diameter of the spiral spring 10 is designed to be slightly smaller than the inner diameter of the connection flange 1, so that when the internal pressure of the pipeline increases, the spiral spring 10 will not interfere with the inner wall of the pipeline.

[0042] In one embodiment, the spiral spring 10 is further provided with a layer of anti-corrosion coating 11, which can be a nickel plating layer or a polytetrafluoroethylene coating, to effectively prevent the spiral spring 10 from rusting due to contact with water vapor during long-term use, thereby prolonging its service life.

[0043] For example, the two ends of the coil spring 10 are fixedly connected with the connecting flange 1 through welding or fasteners, ensuring good support performance under various working conditions. The design of the coil spring 10 fully considers the fluid dynamics characteristics inside the pipeline, and by selecting appropriate materials and sizes, it ensures reliable operation under high pressure and long-term operation conditions. Specifically, the inner diameter of the connecting flange 1 is slightly larger than the outer diameter of the coil spring 10, thereby avoiding friction or collision between the coil spring 10 and the inner wall of the pipeline when the pipeline pressure increases, and maintaining smooth flow inside the pipeline.

[0044] Reference Figure 4 In one embodiment, the pre-tightening device 4 of the pipeline connection structure for heating construction of the present application includes an adjusting screw 12 and a sleeve 13. The sleeve 13 is fixed on the connecting flange 1, and the adjusting screw 12 passes through the sleeve 13 and presses the sealing ring 2, and the pre-tightening force is adjusted by adjusting the position of the adjusting screw 12. This design can ensure the sealing effect of the sealing ring 2 at the connection site and improve the reliability of the overall connection.

[0045] The adjusting screw 12 is provided with scale marks 14, which can accurately display the size of the pre-tightening force, facilitating quick and accurate adjustment of the pre-tightening force during installation, thereby ensuring that the sealing ring 2 reaches the optimal sealing state. The design of the scale marks 14 enables the installer to intuitively understand the current pre-tightening force value, avoiding connection problems caused by excessive or insufficient pre-tightening.

[0046] The material of the sleeve 13 is selected from stainless steel or aluminum alloy. These two materials have excellent corrosion resistance and mechanical strength, suitable for harsh working conditions, ensuring the long-term stable operation of the pre-tightening device 4 and improving the reliability and durability of the entire pipeline connection structure. Selecting appropriate materials not only enhances the mechanical properties of the pre-tightening device 4, but also prolongs its service life and reduces maintenance costs.

[0047] Specifically, for example, during installation, first fix the sleeve 13 at the predetermined position of the connecting flange 1, then pass the adjusting screw 12 through the sleeve 13 so that its bottom contacts and presses the sealing ring 2. By rotating the handle or tool on the adjusting screw 12, adjust it to the required pre-tightening force scale position according to the scale marks 14, and complete the accurate adjustment of the pre-tightening force.

[0048] In actual operation, when the device is used, first, the two pipeline ends to be connected are respectively installed on the connecting flanges 1, and then the sealing ring 2 is arranged between the two connecting flanges 1. The arrangement of the sealing ring 2 effectively prevents the leakage of the medium in the pipeline and ensures the tightness and sealing of the connection. At the same time, the elastic support 3 is arranged around the sealing ring 2, and the two ends are respectively connected with the connecting flanges 1. This design can provide necessary support for the sealing ring 2 when the pressure inside and outside the pipeline is unbalanced, reduce the deformation of the sealing ring 2 in the high-pressure environment, and thus prolong the service life of the sealing ring 2 and maintain the good sealing effect. The pre-tightening device 4 is installed at a specific position of the connecting flange 1, and the pre-tightening force on the sealing ring 2 can be accurately adjusted by adjusting the adjusting mechanism thereon, so that the sealing ring 2 is more tightly fitted, and the reliability and air tightness of the overall connection are further improved. Finally, the two connecting flanges 1 are fixed together by using the locking bolts, so as to ensure the stable and reliable connection of the two pipelines. In the whole process, the components cooperate with each other to realize the efficient, safe and reliable connection between the pipelines.

[0049] The method, program, system, device, etc. of the embodiments of the present application can be executed or implemented in a single or multiple networked computers, or can be practiced in a distributed computing environment. In the embodiments of the present specification, in these distributed computing environments, tasks can be performed by remote processing devices connected through a communication network.

[0050] Those skilled in the art should understand that the embodiments of the present specification can be provided as a method, a system or a computer program product. Therefore, those skilled in the art can conceive that the implementation of the functional modules / units or controllers and the related method steps illustrated in the above embodiments can be realized by software, hardware and a combination of software and hardware.

[0051] Unless explicitly stated, the actions or steps of the method, program according to the embodiments of the present application do not have to be performed in a specific order and still achieve the desired results. In some embodiments, multi-task processing and parallel processing are also possible or can be advantageous.

[0052] In this document, a plurality of embodiments of the present application are described, but for the sake of brevity, the description of each embodiment is not exhaustive, and the same or similar features or parts between different embodiments can be omitted. In this document, "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" mean applicable to at least one embodiment or example according to the present application, but not all embodiments. The above terms do not necessarily mean referring to the same embodiment or example. Those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0053] Exemplary systems and methods of the present application have been specifically shown and described herein in accordance with the exemplary embodiments, but it will be understood that various changes in the system and / or methods described herein can be made without departing from the spirit and scope of the application, which is defined in the appended claims.

Claims

1. A HVAC construction pipe connection structure, characterized in that: include: Two connecting flanges (1) for fixing to the ends of the pipes to be connected; A sealing ring (2) is provided between the two connecting flanges (1) to prevent leakage of the medium; An elastic support member (3) is arranged around the sealing ring (2), one end of which is connected to one of the connecting flanges (1) and the other end of which is connected to the other connecting flange (1); A pre-tightening device (4), provided on the connecting flange (1), for providing a pre-tightening force; Locking bolts (5) for fixing the two connecting flanges (1) together; in The sealing ring (2) adopts a multi-layer composite structure, including an outer elastic material layer (8) and an inner high-strength fiber material layer (9); The pre-tightening device (4) comprises an adjusting screw (12) and a sleeve (13), wherein the sleeve (13) is fixed on the connecting flange (1), the adjusting screw (12) passes through the sleeve (13) and presses the sealing ring (2), and the pre-tightening force is adjusted by adjusting the position of the adjusting screw (12); and The adjusting screw (12) is provided with a scale mark (14), and the scale mark (14) is used to display the size of the pre-tightening force.

2. A HVAC construction pipe connection structure according to claim 1, characterized in that: The inner edge of the connecting flange (1) is provided with a plurality of grooves (6), the number and position of the grooves (6) corresponding to the locking bolts (5), so as to ensure that the inner side of the connecting flange (1) is tightly fitted when the locking bolts (5) are tightened.

3. The HVAC construction pipe connection structure according to claim 1, characterized in that: A reinforcement ring (7) is provided on the outer side of the connecting flange (1), and the reinforcement ring (7) surrounds the connecting flange (1).

4. A HVAC construction pipe connection structure according to claim 3, characterized in that: The connecting flange (1) is welded or threadedly connected to the reinforcement ring (7).

5. The HVAC construction pipe connection structure according to claim 1, characterized in that: The elastic support member (3) is a coil spring (10), and both ends of the coil spring (10) are fixedly connected to the two connecting flanges (1) respectively.

6. The HVAC construction pipe connection structure according to claim 5, characterized in that: The outer diameter of the coil spring (10) is slightly smaller than the inner diameter of the connecting flange (1).

7. The HVAC construction pipe connection structure according to claim 6, characterized in that: The coil spring (10) is also provided with an anti-corrosion coating (11).

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