Thermal and acoustic insulation system for pipes comprising layer of aerogel material

Abstract

The utility model provides a heat insulation and sound insulation structure. The heat insulation and sound insulation structure comprises a pipeline; a metal protective layer; the aerogel felts and the sound insulation layers are arranged between the pipeline and the metal protection layer. According to the utility model, the sound insulation grade of ISO 15665: 2023 is met. Different structures can be flexibly selected for pipelines and equipment with different sound insulation and heat insulation requirements.

Description

Technical Field

[0001] The utility model belongs to the field of heat insulation and sound insulation of industrial pipelines and equipment. Background Art

[0002] Pipes are commonly used in industry to transport gas, liquid or fluid with solid particles. The structure for soundproofing the pipeline is called pipeline soundproofing structure.

[0003] Conventional thermal and acoustic insulation structures have the disadvantages of large thickness, poor acoustic insulation performance, and high thermal conductivity. For low-temperature equipment and pipelines, it is easy for water vapor to enter the thermal and acoustic insulation system, causing the system to freeze and the thermal / acoustic insulation to fail. Water vapor or water can easily enter the thermal and acoustic insulation system, causing CUI (corrosion under insulation) on the surface of pipelines and equipment.

[0004] Conventional thermal / acoustic insulation structures often use mineral wool materials, which usually require a very high thickness to achieve thermal / acoustic insulation. Mineral wool thermal / acoustic insulation structures with holes may cause water or water vapor to enter the surface of pipes and equipment, causing corrosion under the insulation layer. Therefore, it is necessary to study a solution to reduce the thickness of the thermal / acoustic insulation structure, improve the thermal / acoustic insulation performance, reduce the risk of corrosion under the insulation layer, and for low-temperature pipes or equipment, reduce the risk of water entering the thermal / acoustic insulation system and freezing in it. Utility Model Content

[0005] The purpose of the utility model is to provide a pipeline heat insulation / sound insulation structure to solve the above-mentioned problems existing in the background technology.

[0006] Therefore, the utility model relates to a heat and sound insulation structure, which comprises:

[0007] pipeline;

[0008] Metal protective layer; and

[0009] One or more layers of aerogel felt and one or more layers of sound insulation between the pipe and the metal protective layer.

[0010] According to the utility model, by adopting a combination of aerogel insulation felt and sound insulation layer, water / water vapor resistance is generated with a lighter weight, ice formation and insulation / sound insulation failure of the insulation / sound insulation system used for low-temperature pipes and equipment are avoided, and the risk of corrosion under insulation (CUI) is reduced. The insulation and sound insulation structure of the utility model can ensure long-term insulation / sound insulation stability. Compared with the traditional mineral wool system, the same insulation / sound insulation performance can be achieved with a thinner thickness, which can save more space.

[0011] The thermal and acoustic insulation structure of the utility model can solve CUI and thermal and acoustic insulation for low-temperature pipeline applications, and at the same time has a longer thermal / acoustic insulation performance stability / lifespan, is suitable for industrial applications, and can be used for various pipeline equipment including valves, compressors and containers. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of a structure 1 according to the utility model is shown;

[0013] Figure 2 A schematic diagram of a structure 2 according to the utility model is shown;

[0014] Figure 3 A schematic diagram of a structure 3 according to the utility model is shown;

[0015] Figure 4 The acoustic insertion loss test results of the structure 1 of the utility model are shown;

[0016] Figure 5 The acoustic insertion loss test results of the structure 1 of the utility model are shown;

[0017] Figure 6 The acoustic insertion loss test results of structure 2 of the utility model are shown;

[0018] Figure 7 The acoustic insertion loss test results of structure 3 of the present invention are shown. DETAILED DESCRIPTION

[0019] The utility model relates to a heat insulation and sound insulation structure, which comprises:

[0020] pipeline;

[0021] Metal protective layer; and

[0022] One or more layers of aerogel felt and one or more layers of sound insulation between the pipe and the metal protective layer.

[0023] The aerogel felt is a powder-type aerogel felt, which is composed of glass fiber, amorphous silicon dioxide and other fillers (such as opacifier).

[0024] In one embodiment, the aerogel felt is tested according to ASTM C177 at different temperatures θ m Thermal conductivity λ under d for:

[0025] <![CDATA[θ m / ℃]]> +24 +38 +93 +149 +204 +260 +316 +371 <![CDATA[λ d / W / (m·K)≤]]> 0.021 0.022 0.023 0.025 0.029 0.032 0.036 0.043

[0026] In one embodiment, the aerogel felt is tested according to ASTM C303 and has a nominal density of 180 kg / m3 .

[0027] In one embodiment, the sound insulation layer is a vinyl thermoplastic polymer. In one embodiment, the sound insulation layer is a sheet material, and its mass per unit area is: 4.4 to 5.2 kg / m 2 (2mm thickness); 6.6 to 7.8 kg / m 2 (3mm thickness); 8.8 to 10.4 kg / m 2 (4mm thickness).

[0028] In one embodiment, the metal protective layer is selected from galvanized steel sheet, aluminum-plated steel sheet, stainless steel sheet, aluminum sheet, etc.

[0029] In one embodiment, the heat and sound insulation structure of the present invention comprises two or more layers of aerogel felt, and / or comprises two or more layers of sound insulation layer. The multiple layers of aerogel felt and the multiple layers of sound insulation layer can be arranged alternately.

[0030] The following will further describe the embodiments of the present invention in conjunction with the accompanying drawings. Those skilled in the art will appreciate that the description is not intended to limit the scope of the present invention, and the scope of the present invention is defined by the appended claims.

[0031] Figure 1 The schematic diagram of the structure 1 according to the utility model is shown. The structure comprises in sequence: a pipeline (4), an aerogel felt (1) arranged outside the pipeline (4); a sound insulation layer (2) arranged outside the aerogel felt (1); and a metal protective layer (3) arranged outside the sound insulation layer (2). The aerogel felt (1) is from Armacell. HT. The sound insulation layer (2) is from Armacell Barrier EX. The material of the metal protective layer (3) is an aluminum plate. In one embodiment, the thickness of the aerogel felt (1) is 20 mm, the thickness of the sound insulation layer (2) is 2 mm, and the thickness of the metal protective layer (3) is 0.5 mm.

[0032] Figure 2 The schematic diagram of the structure 2 according to the utility model is shown. Based on the structure 1, the structure 2 comprises: two layers of aerogel felt (1) and (11) arranged between the pipe (4) and the sound insulation layer (2). The aerogel felt (1) and (11) are both from Armacell. In one embodiment, the thickness of the aerogel felt (1) is 20 mm, the thickness of the aerogel felt (11) is 20 mm, the thickness of the sound insulation layer (2) is 3 mm, and the thickness of the metal protective layer (3) is 0.5 mm.

[0033] Figure 3 The schematic diagram of the structure 3 according to the utility model is shown. Based on the structure 2, the structure 3 further comprises: an additional aerogel felt (12) and an additional sound insulation layer (21) arranged between the sound insulation layer (2) and the metal protective layer (3). The additional aerogel felt (12) is from Armacell. HT. The additional sound insulation layer (21) is from Armacell Barrier EX. Different from structures 1 and 2, the material of the metal outer sheath (3) in structure 3 is a steel plate. In one embodiment, the thickness of the aerogel felt (1) is 20 mm, the thickness of the aerogel felt (11) is 20 mm, the thickness of the sound insulation layer (2) is 4 mm, the thickness of the aerogel felt (12) is 20 mm, the thickness of the sound insulation layer (21) is 2 mm, and the thickness of the metal protective layer (3) is 0.4 mm.

[0034] ISO 15665:2023 Section 4 lists the minimum insertion loss requirements for each sound insulation level in Table 1.

[0035]

[0036] ISO 15665:2023 lists the sound insulation structures that meet the sound insulation level requirements in Table A.1 of Annex A.

[0037]

[0038]

[0039] Under the conditions specified in Table A.1, the acoustic insertion losses of structures 1 to 3 of the present invention were tested, and the test results are as follows: Figures 4 to 7 As shown. The results show that structures 1 to 3 of the utility model meet or exceed the minimum insertion loss standards of A2, B2, C2 and D2 grades in ISO 15665:2003. Therefore, different structures can be flexibly selected for pipes and equipment with different sound insulation and thermal insulation requirements.

[0040] The above description is only a preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent replacement or change made by any technician familiar with the technical field based on the specific disclosure of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A heat and sound insulation structure, characterized in that: The heat and sound insulation structure comprises: pipeline; Metal protective layer; and One or more layers of aerogel felt and one or more layers of sound insulation between the pipe and the metal protective layer.

2. The heat and sound insulation structure according to claim 1, characterized in that: The aerogel felt is a powder-type aerogel felt, which comprises glass fiber and amorphous silicon dioxide.

3. The heat and sound insulation structure according to claim 1, characterized in that: The sound-damping layer is a vinyl thermoplastic polymer.

4. The heat and sound insulation structure according to claim 1, characterized in that: The metal protective layer is selected from galvanized steel plate, aluminum-plated steel plate, stainless steel plate and aluminum plate.

5. The heat and sound insulation structure according to claim 1, characterized in that: The heat insulation and sound insulation comprises two or more layers of aerogel felt, and / or comprises two or more layers of sound insulation layers.

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