Detachable pipeline flange sound insulation structure

Abstract

The utility model discloses a detachable pipeline flange sound insulation structure, which belongs to the technical field of flange sound insulation binding, is used for being attached to the outer side of a pipeline and comprises a first sound insulation part and a second sound insulation part, and the first sound insulation part and the second sound insulation part are sleeved on the outer side of the pipeline. The first sound insulation part and the second sound insulation part are detachably connected; the sound insulation structure further comprises a connecting piece, the connecting piece is locked at the position where the first sound insulation piece and the second sound insulation piece are attached and make contact, the first sound insulation piece and the second sound insulation piece are detachably connected through the connecting piece, the first sound insulation piece and the second sound insulation piece are detachably connected, operation is easy and convenient, repeated use is not affected, and the sound insulation structure is simple and convenient to use. And the requirement of frequent maintenance is met.

Description

Technical Field

[0001] This utility model relates to the field of flange sound insulation wrapping technology, and in particular to a detachable pipe flange sound insulation structure. Background Technology

[0002] In the petrochemical industry, various high-noise pipelines are among the main noise sources affecting the on-site acoustic environment quality. These pipelines consist of straight pipe sections, elbows, flange connections, tees, reducers, valves, and other components. Flange connections are crucial components of process pipelines and are typically a key inspection point during routine inspections and equipment maintenance. They are also a primary source of noise from these pipelines, exhibiting a distinct mid-frequency characteristic (sound energy mainly concentrated between 63 and 8000 Hz), peaking at 500 Hz, with noise levels between 90 and 120 dB(A). Noise pollution is systemic, affecting both the auditory and non-auditory systems. Humans are particularly sensitive to mid-frequency noise; prolonged exposure by inspection personnel can lead to dizziness, lethargy, loss of appetite, and confusion. Long-term exposure can also cause neurosis and organic changes. Furthermore, noise in the workplace can interfere with communication, affect work efficiency, and even cause accidents. The renowned noise expert Kryter pointed out that the adverse effects of noise on the body far exceed simple hearing loss. High-noise environments will directly lead to occupational stress and seriously affect the mental state and behavior of workers.

[0003] Currently, in pipeline noise reduction engineering implementations, noise reduction measures for flange locations are relatively simple. Due to their irregular shape, noise reduction is generally achieved by wrapping the flange with sound-absorbing and noise-reducing materials on-site or by exposing the area and abandoning noise reduction measures. This directly affects the overall noise reduction effect of the pipeline or leads to destructive dismantling during maintenance, thus losing its value for reuse.

[0004] Existing technologies, such as Chinese Patent Publication No. CN210687314U, disclose a pipe sound-absorbing and insulating wrapping structure, which includes a damping sound insulation layer, sound-absorbing cotton, and a metal plate that are wrapped layer by layer from the inside to the outside of the pipe in a radial direction.

[0005] However, the above-mentioned traditional practices generally have some shortcomings, especially when facing situations that require frequent inspection or maintenance. Once the initial installation is completed, they are either not easy to disassemble and reassemble, increasing the difficulty and cost of operation, or they simply do not have any effective noise reduction function. Utility Model Content

[0006] The purpose of this invention is to propose a sound insulation structure for pipe flanges, which is detachable and improves the ease of installation.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A detachable pipe flange sound insulation structure is used for fitting and installing on the outside of a pipe. It includes a first sound insulation component and a second sound insulation component, which are sleeved on the outside of the pipe and are detachably connected. It also includes a connector, which is locked in a position where the first sound insulation component and the second sound insulation component are in contact. The first sound insulation component and the second sound insulation component are detachably connected through the connector.

[0009] The preferred technical solution of this utility model is that a first connecting part is provided on the outer edge of the position where the first sound insulation component contacts the second sound insulation component, and the outer side of the second sound insulation component is fitted and wrapped inside the first connecting part; the connecting part includes a bolt and a nut, a first fixing hole is provided on the first connecting part, a second fixing hole is provided on the second sound insulation component at the position corresponding to the first fixing hole, and the bolt passes through the first fixing hole and the second fixing hole and is fixed by the nut.

[0010] The preferred technical solution of this utility model is that the first sound insulation component and the second sound insulation component are respectively provided with a first side and a second side, the second side is adapted to the outer side of the pipe, so that the second side is attached to the outer side of the pipe; when the first sound insulation component and the second sound insulation component are connected, the first side covers the second side, and a third fixing hole and a fourth fixing hole are respectively provided at the position where the first side and the second side are attached, and the connector fixes the first sound insulation component and the second sound insulation component through the third fixing hole and the fourth fixing hole.

[0011] The preferred technical solution of this utility model is that the outer side of the first sound insulation component and the second sound insulation component is provided with a shell, and the shell is filled with a sound insulation layer.

[0012] The preferred technical solution of this utility model is that the sound insulation layer includes a first damping layer, a first sound-absorbing cotton layer, a second damping layer, a first partition, a second sound-absorbing cotton layer, a third damping layer, and a second partition, which are wrapped around the outside of the pipe from the inside out.

[0013] The preferred technical solution of this utility model is that the outer shell is made of aluminum alloy; the first partition and the second partition are made of galvanized steel plate; the first sound-absorbing cotton layer and the second sound-absorbing cotton layer are one of glass wool, polyester fiber cotton, rock wool, mineral wool or egg wool; the thickness of the first sound-absorbing cotton layer and the second sound-absorbing cotton layer is between 45 mm and 110 mm.

[0014] The preferred technical solution of this utility model is that the thickness of the first damping layer and the third damping layer is between 3 mm and 5 mm.

[0015] The preferred technical solution of this utility model is that both the first sound insulation component and the second sound insulation component are configured as semi-circular; when the first sound insulation component and the second sound insulation component are installed on the outside of the pipe, the two ends of the first sound insulation component and the second sound insulation component are connected, the pipe is placed in the middle, and the maximum distance between the first sound insulation component and the second sound insulation component is between 150 mm and 200 mm.

[0016] The preferred technical solution of this utility model is that the outer sides of the first sound-absorbing cotton layer and the second sound-absorbing cotton layer are wrapped with alkali-free water-repellent glass cloth.

[0017] The preferred technical solution of this utility model is that the outer edges of both ends of the first sound insulation component and the second sound insulation component are covered with a skeleton, and the spacing of the skeleton is less than or equal to 500 mm * 500 mm.

[0018] The beneficial effects of this utility model are as follows:

[0019] (1) Through multi-layer structure design, including damping layer, sound-absorbing cotton layer and partition, the sound insulation performance is significantly improved, and the comprehensive sound insulation meets the requirement of Rw≥20dB, effectively shielding the high-intensity mid-frequency noise generated at the flange.

[0020] (2) The first sound insulation component and the second sound insulation component are connected in a detachable manner. They are installed and removed quickly by using bolts and nuts. The operation is simple and does not affect repeated use, thus meeting the needs of frequent maintenance.

[0021] (3) The structure is flexible and can be designed with different thicknesses of sound-absorbing cotton layer (45mm-110mm) according to actual needs. It is also wrapped with alkali-free water-repellent glass cloth to ensure good sound insulation while having excellent durability and adaptability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure and installation of this utility model.

[0023] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 3 This is a schematic diagram showing the overall structure of this utility model.

[0025] Figure 4 This is a front view of the overall structure of the first sound insulation component of this utility model.

[0026] Figure 5 yes Figure 4 A cross-sectional schematic diagram of AA.

[0027] Figure 6 yes Figure 4 A cross-sectional view of BB.

[0028] Figure 7 This is a schematic diagram of the overall structure of the first sound insulation component of this utility model.

[0029] Figure 8 This is a front view of the overall structure of the second sound insulation component of this utility model.

[0030] Figure 9 yes Figure 8 A cross-sectional view of CC.

[0031] Figure 10 yes Figure 8 A cross-sectional view of DD.

[0032] Figure 11 yes Figure 9 An enlarged diagram of A in the diagram.

[0033] In the picture:

[0034] 1. Pipe; 2. First sound insulation component; 3. Second sound insulation component; 4. First damping layer; 5. First partition; 6. First sound-absorbing cotton layer; 7. Second partition; 8. Second sound-absorbing cotton layer; 9. Third damping layer; 10. Nut; 11. Bolt; 12. Outer shell; 13. Frame; 14. First connecting part; 15. First fixing hole; 16. Second fixing hole; 17. First side; 18. Second side; 19. Third fixing hole; 20. Fourth fixing hole; 21. Second damping layer. Detailed Implementation

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1

[0037] like Figure 1-10 As shown, this utility model provides a detachable pipe flange sound insulation structure, including a first sound insulation component 2 and a second sound insulation component 3. The two are sleeved on the outside of the pipe 1 and connected by bolts 11 to form an integral sound insulation wrapping structure. It includes the first sound insulation component 2, the second sound insulation component 3, and a connector. The two are detachably connected by the connector, making the entire device easy to install and remove, and meeting the requirements for repeated use.

[0038] A first connecting part 14 is provided at the position where the first sound insulation component 2 and the second sound insulation component 3 are attached. The first connecting part 14 encloses the second sound insulation component 3 inside. In order to facilitate the installation of the bolts 11 and nuts 10 of the connecting parts, a first fixing hole 15 and a second fixing hole 16 are respectively provided on the first connecting part 14 and the second sound insulation component 3 at the positions corresponding to the first connecting part 14. After the bolts 11 pass through the first fixing holes 15 and the second fixing holes 16, they are locked with nuts 10. Nuts 10 can also be pre-embedded in the second sound insulation component 3.

[0039] Example 2

[0040] The first sound insulation component 2 and the second sound insulation component 3 are provided with a first side 17 and a second side 18. In order not to affect the installation of the first sound insulation component 2 and the second sound insulation component 3, the second side 18 is attached to the pipe 1, and the first side 17 covers the second side 18. A third fixing hole 19 and a fourth fixing hole 20 are respectively opened at the position where the first side 17 and the second side 18 are attached. By locking with a connector, the fixing effect between the first sound insulation component 2 and the second sound insulation component 3 is better.

[0041] Example 3

[0042] The first sound insulation component 2 and the second sound insulation component 3 each include, from the inside out, a first damping layer 4, a first sound-absorbing cotton layer 6, a second damping layer 21, a first partition 5, a second sound-absorbing cotton layer 8, a third damping layer 9, a second partition 7, and an outer shell 12. This multi-layer composite design can effectively absorb and block high-frequency and low-frequency noise from the flange interface.

[0043] The first partition 5 and the second partition 7, made of 0.5mm-1mm galvanized steel sheet, serve a supporting function and further enhance overall rigidity to prevent deformation. For applications requiring high corrosion resistance, stainless steel or other highly corrosion-resistant alloy materials can be used instead of the galvanized steel sheet.

[0044] A layer of glass wool, approximately 50-100 mm thick, is laid on top of the first partition 5 and the second partition 7 as a sound-absorbing layer. The thickness of the first sound-absorbing layer 6 is half that of the second sound-absorbing layer 7, or the same as both layers, and it undertakes the task of absorbing most of the sound. Depending on the specific application, other types of sound-absorbing materials, such as polyester fiber cotton, rock wool, or mineral wool, can be selected for replacement. The purpose is to separate the upper and lower layers of sound-absorbing cotton to prevent them from interfering with each other and weakening the sound absorption effect.

[0045] The first sound-absorbing cotton layer 6 and the second sound-absorbing cotton layer 8 are made of alkali-free water-repellent glass cloth, which can effectively prevent the sound-absorbing cotton layer from getting damp, improve the durability and stability of the sound insulation wrapping, and ensure the sound insulation performance under long-term use.

[0046] The damping layer not only helps seal all gaps to prevent air leakage, but also adds moisture-proof and waterproof functions, extending its service life. By adopting the above technical solution, the thickness of the first damping layer 4, the second damping layer 21, and the third damping layer 9 is set between 2mm and 5mm, which can effectively enhance the overall damping performance of the sound insulation wrapping and reduce the transmission of noise caused by resonance effects.

[0047] A damping layer is a functional material layer used for vibration reduction, noise reduction, or energy absorption, and is widely used in machinery, construction, automotive, aerospace, and other fields. Its core principle is to convert mechanical vibration energy into heat energy or other forms of energy through the internal friction of the material or structural design, thereby suppressing vibration or noise. Damping materials (such as polymers or asphalt-based materials) can be directly coated or sprayed onto the surface of a substrate and cured to form a thin layer. Alternatively, a sandwich structure can be used, sandwiching a damping layer (such as rubber or viscoelastic polymers) between two rigid materials (such as metal plates or composite materials) and fixing them by hot pressing or adhesives. Filled composite materials can also be used, mixing damping particles (such as ceramic powder or rubber particles) into a matrix material (such as resin or foam) and molding them through compression molding or injection molding.

[0048] The damping layer effectively reduces vibration energy, while the sound-absorbing cotton layer absorbs sound waves; the combination of the two may offer better sound insulation and vibration reduction. Secondly, the first damping layer 4 and the second damping layer 21 sandwich the first sound-absorbing cotton layer 6 in between, forming a sandwich structure that may improve overall mechanical strength and provide better fire resistance. Furthermore, it may offer advantages in temperature regulation, maintaining structural stability in high or low temperature environments.

[0049] The first sound insulation component 2 and the second sound insulation component 3 are made of aluminum alloy shell 12. The reason for this is that aluminum itself has good anti-aging ability and beautiful appearance.

[0050] For connection, the first sound insulation component 2 has pre-embedded M12 nuts 10 at both ends, which are connected to the corresponding holes on the second sound insulation component 3 by a set of M12 stainless steel bolts 11. The bolt spacing 11 is set between 150 and 200 mm to ensure sufficient connection strength and facilitate disassembly and maintenance in the future.

[0051] like Figure 11 As shown, to increase overall strength, a frame 13 is also included. The frame 13 is disposed on the outer edges of the first sound insulation component 2 and the second sound insulation component 3. The spacing of the frame 13 does not exceed 500×500 mm to increase the overall structural stability. At the same time, to avoid damage caused by local stress concentration, the connection parts of the frame 13 adopt a rounded corner transition design and are firmly and reliably fixed using a high-strength welding process.

[0052] The best sound insulation effect is achieved by cleverly using a combination of physical mechanisms. First, the thick and dense metal plate reflects most of the shock wave, thus preventing external noise from entering the indoor space. Second, the flexible buffer medium gradually reduces residual vibrations to prevent secondary radiation from generating new noise components, thus establishing a comprehensive three-dimensional protective barrier.

[0053] Example 4

[0054] Both the first sound insulation component 2 and the second sound insulation component 3 are semi-circular in design to fit the outline of pipes 1 of different diameters. The part of each half of the sound insulation component closest to the surface of the pipe 1 is made of a 3mm thick damping layer, which can suppress vibration transmission to a certain extent while consuming some vibration energy and converting it into heat energy for dissipation.

[0055] The semi-circular design allows the first sound insulation component 2 and the second sound insulation component 3 to fit tightly against the outside of the pipe 1, ensuring that the flange area is completely enclosed and effectively reducing noise leakage. At the same time, limiting the maximum distance between the first sound insulation component 2 and the second sound insulation component 3 to between 150mm and 200mm ensures structural stability and avoids problems such as reduced sound insulation performance or installation inconvenience caused by excessive spacing. This not only improves the overall sound insulation performance but also facilitates quick installation and disassembly, meeting the practical needs of repeated use.

[0056] This utility model has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. This utility model is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are all within the protection scope of this utility model.

Claims

1. A detachable pipe flange sound insulation structure for fitting and installing on the outside of a pipe (1), characterized in that: It includes a first sound insulation component (2) and a second sound insulation component (3), the first sound insulation component (2) and the second sound insulation component (3) are sleeved on the outside of the pipe (1), and the first sound insulation component (2) and the second sound insulation component (3) are detachably connected; It also includes a connector, which is locked in place between the first sound insulation component (2) and the second sound insulation component (3) at a position where they are in contact. The first sound insulation component (2) and the second sound insulation component (3) are detached and connected through the connector.

2. The detachable pipe flange sound insulation structure according to claim 1, characterized in that: A first connecting part (14) is provided on the outer edge of the contact position between the first sound insulation component (2) and the second sound insulation component (3), and the outer side of the second sound insulation component (3) is fitted and wrapped inside the first connecting part (14); The connector includes a bolt (11) and a nut (10). The first connecting part (14) has a first fixing hole (15). The second sound insulation part (3) has a second fixing hole (16) at the position corresponding to the first fixing hole (15). The bolt (11) passes through the first fixing hole (15) and the second fixing hole (16) and is then fixed by the nut (10).

3. The detachable pipe flange sound insulation structure according to claim 1 or 2, characterized in that: The first sound insulation component (2) and the second sound insulation component (3) are respectively provided with a first side (17) and a second side (18). The second side (18) is adapted to the outside of the pipe (1) so that the second side (18) is attached to the outside of the pipe (1). When the first sound insulation component (2) is connected to the second sound insulation component (3), the first side (17) covers the second side (18). The first side (17) and the second side (18) are respectively provided with a third fixing hole (19) and a fourth fixing hole (20) at the position where they are attached. The connector fixes the first sound insulation component (2) and the second sound insulation component (3) through the third fixing hole (19) and the fourth fixing hole (20).

4. The detachable pipe flange sound insulation structure according to claim 1, characterized in that: The outer side of the first sound insulation component (2) and the second sound insulation component (3) is provided with a shell (12), and the shell (12) is filled with a sound insulation layer.

5. The detachable pipe flange sound insulation structure according to claim 4, characterized in that: The sound insulation layer includes a first damping layer (4), a first sound-absorbing cotton layer (6), a second damping layer (21), a first partition (5), a second sound-absorbing cotton layer (8), a third damping layer (9), and a second partition (7) that are wrapped around the outside of the pipe (1) from the inside out.

6. The detachable pipe flange sound insulation structure according to claim 5, characterized in that: The outer shell (12) is made of aluminum alloy; The first partition (5) and the second partition (7) are made of galvanized steel sheet; The first sound-absorbing cotton layer (6) and the second sound-absorbing cotton layer (8) are one of glass wool, polyester fiber cotton, rock wool, mineral wool or egg wool; The thickness of the first sound-absorbing cotton layer (6) and the second sound-absorbing cotton layer (8) is between 45 mm and 110 mm.

7. The detachable pipe flange sound insulation structure according to claim 5, characterized in that: The thickness of the first damping layer (4) and the third damping layer (9) is between 3 mm and 5 mm.

8. The detachable pipe flange sound insulation structure according to claim 1, characterized in that: Both the first sound insulation component (2) and the second sound insulation component (3) are configured as semi-circular; When the first sound insulation component (2) and the second sound insulation component (3) are installed on the outside of the pipe (1), the two ends of the first sound insulation component (2) and the second sound insulation component (3) are connected, the pipe (1) is placed in the middle, and the maximum distance between the first sound insulation component (2) and the second sound insulation component (3) is between 150 mm and 200 mm.

9. The detachable pipe flange sound insulation structure according to claim 5, characterized in that: The outer sides of the first sound-absorbing cotton layer (6) and the second sound-absorbing cotton layer (8) are wrapped with alkali-free water-repellent glass cloth.

10. The detachable pipe flange sound insulation structure according to claim 8, characterized in that: The outer edges of both ends of the first sound insulation component (2) and the second sound insulation component (3) are covered with a frame (13), and the spacing of the frame (13) is less than or equal to 500 mm * 500 mm.

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