Modularized sound insulation and noise reduction sleeve

Abstract

The utility model discloses a modularized sound insulation and noise reduction sleeve, which belongs to the technical field of sound insulation and noise reduction equipment and is characterized in that the modularized sound insulation and noise reduction sleeve comprises a lining and an outer sleeve, the lining comprises a first noise reduction layer, a second noise reduction layer and a first protective layer, and the outer sleeve comprises a third noise reduction layer, a fourth noise reduction layer, a sound insulation layer and a second protective layer. The lining and the outer sleeve are stacked from bottom to top, all the layers are connected at the edge through the flexible material to form the modular noise reduction sleeve, the technical problems that in the background technology, disassembly is difficult, cleaning is not easy, and inspection is inconvenient are solved, and the modular noise reduction sleeve is mainly applied to noise reduction and sound insulation of the centrifugal unit.

Description

Technical Field

[0001] The utility model belongs to the technical field of sound insulation and noise reduction equipment, and specifically relates to a modular sound insulation and noise reduction sleeve. Background Art

[0002] Each of our three air separation units has an MCO centrifugal compressor unit manufactured by Shenyang Blower to provide compressed air for the air separation unit. The rated power is 20400kw, and the compressed air volume is 251000Nm3 / h. It is arranged on two floors, with the main engine on the second-floor platform and the interstage cooler on the first floor. The compressor and cooler are connected by process pipelines. During operation, it was found that the operating noise was loud, affecting the occupational health of the operating personnel;

[0003] The noise source of air compressor is mainly caused by the friction and collision between airflow and internal parts inside the machine. In general, the noise generated by power air compressor is high frequency and continuous.

[0004] Aerodynamic noise is the main source of noise of the whole machine. Although many scholars are studying or have achieved certain results in improving the air compressor itself to fundamentally solve the noise problem, the noise of the air compressor still exists and needs further improvement. Preventing and solving the noise and vibration problems of the compressor can not only ensure the safety of the compressor, but also help improve the efficiency of the compressor and prevent accidents such as fire and explosion.

[0005] At present, most of the air compressor noise reduction measures are to install soundproof walls, use sound-absorbing materials to make soundproof walls, set up sound-absorbing caps and soundproof doors to reduce the noise of the equipment itself. This method has the disadvantages of being difficult to disassemble during maintenance, not easy to clean, occupying a large space, and inconvenient inspection. Summary of the invention

[0006] Purpose of the invention: The purpose of the utility model is to provide a modular sound insulation and noise reduction cover to solve the technical problems of difficult disassembly, difficult cleaning and inconvenient inspection proposed in the above-mentioned background technology.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: a modular sound insulation and noise reduction cover, characterized in that it includes an inner lining and an outer cover;

[0008] The inner lining is composed of a first noise reduction layer, a second noise reduction layer and a first protective layer;

[0009] The outer shell is composed of a third noise reduction layer, a fourth noise reduction layer, a sound insulation layer, and a second protective layer;

[0010] The lining and outer shell are stacked from bottom to top, and the layers are connected at the edges with flexible materials to form a modular noise reduction cover.

[0011] Furthermore: the first noise reduction layer, the second noise reduction layer, the third noise reduction layer and the fourth noise reduction layer are all 10 mm thick aerogel.

[0012] Furthermore: the first protective layer and the second protective layer are 0.3 mm thick high temperature resistant inorganic fiber fabrics.

[0013] Furthermore: the sound insulation layer is a 4mm thick flexible sound insulation board.

[0014] Further: the modular noise reduction set is a combination of two or more pieces.

[0015] Compared with the prior art, the utility model has the following advantages: the noise reduction layer composed of thick aerogel has a better noise reduction effect, and the sound insulation sleeve is modularized, and thick flexible sound insulation panels are overlapped between multiple sound insulation sleeves through Velcro or buckles, which has better fit, and the module shape can be customized according to needs, which is suitable for comprehensive promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] In the description of the invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0019] In the embodiment of the present utility model, Figure 1 As shown, a modular sound insulation and noise reduction cover comprises an inner lining and an outer cover;

[0020] The inner lining is composed of a first noise reduction layer 1, a second noise reduction layer 2 and a first protective layer 3. The first noise reduction layer 1 and the second noise reduction layer 2 are 10 mm thick aerogels, and the first protective layer 3 is a 0.3 mm thick high temperature resistant inorganic fiber fabric.

[0021] The outer jacket is composed of a third noise reduction layer 4, a fourth noise reduction layer 5, a sound insulation layer 6 and a second protective layer 7. The third noise reduction layer 4 and the fourth noise reduction layer 5 are 10 mm thick aerogels, the second protective layer 7 is a 0.3 mm thick high temperature resistant inorganic fiber fabric, the sound insulation layer 6 is a 4 mm thick flexible sound insulation board, and the thick flexible sound insulation board is made of flexible sound insulation cotton;

[0022] Among them, the characteristics of flexible aerogel insulation materials are:

[0023] 1. Operating temperature: -200℃~650℃

[0024] 2. Density ≤150Kg / m3

[0025] 3. Thermal conductivity: 0.017W / mK@24℃, 0.03W / mK@370℃

[0026] 4. Compressive strength: 24Kpa (10% compression, according to ASTM C165-07)

[0027] 5. Linear shrinkage: <2% (according to GB / T 17911-2018)

[0028] 6. Fire protection grade: A1 (according to GB 8624-2012)

[0029] 7. Hydrophobicity: >99% (according to GB / T10299-2011)

[0030] 8. Flexible shock absorption

[0031] Flexible sound insulation cotton material characteristics:

[0032] 1. Surface density: 3mm≈7.5Kg / m2; 4mm≈10Kg / m2

[0033] 2. Elongation at break ≥ 80%

[0034] 3. Sound insulation Rw>33dB(4mm)(GB / T 19889.3-20095)

[0035] 4. Combustion performance: self-extinguishing, oxygen index ≥ 30%

[0036] The lining and outer shell are stacked from bottom to top, and the layers are connected at the edges with flexible materials to form a modular noise reduction cover.

[0037] In another embodiment of the utility model, the modular noise reduction cover prepared by the technical solution provided in the present application is split into multiple pieces according to the shape and size of the equipment required for noise reduction, and the connected modular noise reduction covers are connected by one of the quickly detachable connection methods such as Velcro, buckles, hidden buttons or zippers. During installation, the thick flexible sound insulation board of the sound insulation layer is used to make the sound insulation cover more closely fit the shape of the required noise reduction equipment.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A modular sound insulation and noise reduction cover, characterized in that: It includes an inner lining and an outer jacket; The inner lining is composed of a first noise reduction layer, a second noise reduction layer and a first protective layer; The outer shell is composed of a third noise reduction layer, a fourth noise reduction layer, a sound insulation layer, and a second protective layer; The lining and outer shell are stacked from bottom to top, and the layers are connected at the edges with flexible materials to form a modular noise reduction cover.

2. A modular sound insulation and noise reduction sleeve according to claim 1, characterized in that: The first noise reduction layer, the second noise reduction layer, the third noise reduction layer and the fourth noise reduction layer are all 10 mm thick aerogel.

3. The modular sound insulation and noise reduction sleeve according to claim 1, characterized in that: The first protective layer and the second protective layer are 0.3 mm thick high temperature resistant inorganic fiber fabrics.

4. The modular sound insulation and noise reduction sleeve according to claim 1, characterized in that: The sound insulation layer is a 4mm thick flexible sound insulation board.

5. The modular sound insulation and noise reduction sleeve according to claim 1, characterized in that: Modular noise reduction sets are composed of two or more pieces.

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