High-sound-insulation and sound-absorption composite board

Abstract

A steel plate and a second steel plate are arranged on the surface of the high-sound-insulation and sound-absorption composite board, rock wool is adopted as sound insulation materials, and an air layer is arranged in the high-sound-insulation and sound-absorption composite board. Through a large number of tiny communicated pores in the rock wool, sound waves can enter the interior of the material along the pores and rub with the interior of the material; the second steel plate and the air layer jointly form a punching sound absorption structure, so that sound wave energy can be effectively converted into heat energy; the air layer is additionally arranged, and meanwhile the shape of the contact face of the air layer and the rock wool layer is changed, so that sound waves can be partially reflected on the interface between the two media of the steel plate and the air layer; a shock absorber is adopted to reduce the transmission of sound waves at the rigid joint of the high-sound-insulation sound-absorption composite board and the wall body; the high-sound-insulation and sound-absorption composite board is prepared by adopting a full-modulus specification, so that the composite boards are tightly connected, a better partition effect can be achieved, and the waste problem caused by waste materials is reduced.

Description

Technical Field

[0001] The utility model relates to a ship cabin material, in particular to a sound insulation and sound absorption composite board. Background Art

[0002] Due to their special application environment, ship cabins face serious noise problems, which can easily cause damage to the health of crew members. If the frequency of ship noise coincides with the resonance period of the ship itself, the resonance intensity of the ship will be greatly increased. In addition, the resonance caused by noise may also affect the instruments and equipment on board the ship, reducing navigation safety and endangering the technical status of the ship.

[0003] At present, the composite panels widely used in ships mainly include composite rock wool panels, composite aluminum honeycomb panels, and composite glass wool panels. The sound insulation is about 30-33dB, which cannot meet the requirements of the "Shipboard Noise Level Rules". Therefore, there is an urgent need in the market for a functional composite panel that meets high sound insulation requirements and has sound absorption and noise reduction. Utility Model Content

[0004] The purpose of the utility model is to provide a high sound insulation and sound absorption composite panel, which combines sound absorbing materials and sound absorbing structures to effectively control structure-borne noise and establish a noise sound barrier, thereby meeting the requirements of the "Regulations on Noise Levels on Board Ships", solving the problem of poor sound insulation effect of existing panels at the rigid connection between the panels and the wall, and improving the service life of the panels.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high sound insulation and sound absorption composite panel, comprising a first steel plate, a rock wool layer, an air layer, a rock wool layer, and a second steel plate, the surface of at least one of the first steel plate and the second steel plate being densely punched;

[0006] In order to improve the functional effect of the sound insulation and sound absorption composite panel, the technical solution provided by the present invention is as follows: the cross-section of the contact surface between the first rock wool layer and the second rock wool layer and the air layer is a straight line;

[0007] Furthermore, the edges of the rock wool layer and the air layer are straight lines;

[0008] Furthermore, the edge between the rock wool layer and the air layer is a broken line;

[0009] Furthermore, the edges of the rock wool layer and the air layer are wavy lines;

[0010] In order to increase the service life of the sound insulation and sound absorption composite panel, the first steel plate and the second steel plate are subjected to a surface treatment process;

[0011] Furthermore, the surface treatment process is zinc plating;

[0012] Furthermore, the surface treatment process is to affix a PVC or PET film layer.

[0013] In order to further reduce the transmission of sound vibrations at the rigid connection between the high sound insulation and sound absorbing composite panel and the wall, and reduce the impact of ship noise on crew members, the technical solution provided by the utility model is: installing a vibration damper at the rigid connection between the high sound insulation and sound absorbing composite panel and the wall.

[0014] In order to reduce the transmission of sound waves through gaps between the sound-insulating and sound-absorbing composite panels, the technical solution provided by the present invention is that the sound-insulating and sound-absorbing composite panels adopt full-module specifications.

[0015] The advantages and beneficial effects of the present invention are as follows: rock wool is used as a sound insulation material and is densely laid and adhered to the wall surface. There are a large number of tiny interconnected pores inside the rock wool. Sound waves can enter the interior of the material along the pores and rub against the interior of the material, consuming sound energy. The second steel plate and the air layer together constitute a perforated sound-absorbing structure, which can effectively convert sound wave energy into heat energy. Due to the addition of an air layer with a characteristic impedance different from that of the rock wool layer, the interface between the two media can partially reflect sound waves, and the sound insulation and sound absorption effect is further improved by changing the shape of the contact surface. A vibration damper is used to reduce the transmission of sound waves at the rigid connection between the high-sound insulation and sound-absorbing composite panel and the wall. The high-sound insulation and sound-absorbing composite panel is prepared with full-modulus specifications so that it is tightly connected, which can play a better partition role and reduce the waste problem caused by waste materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional view of a high sound insulation and sound absorbing composite panel provided in Example 1 of the present utility model;

[0017] Figure 2 This is a cross-sectional view of a high sound insulation and sound absorbing composite panel provided in Example 2 of the present utility model;

[0018] Figure 3 This is a cross-sectional view of a high sound insulation and sound absorbing composite panel provided in Example 3 of the present utility model;

[0019] Figure 4 This is the punching method of the second steel plate in Example 1 of the present utility model;

[0020] Figure 5 This is the punching method of the second steel plate in the second and third embodiments of the present invention;

[0021] Figure 6 This is a schematic diagram of the installation of a high sound insulation and sound absorption composite panel provided by the utility model;

[0022] In the figure: 1-first steel plate; 2-second steel plate; 3-rock wool layer; 4-air layer; 5-punching hole; 6-vibration absorber; 7-ceiling; 8-wall. DETAILED DESCRIPTION

[0023] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0024] Rock wool is a fibrous porous sound insulation material. The sound insulation mechanism of this type of material is that there are a large number of tiny interconnected pores inside the material. Sound waves can penetrate deep into the material along these pores, and friction with the material converts sound energy into heat energy.

[0025] The perforated steel plate and the enclosed air layer behind it together form a perforated sound-absorbing structure. The sound absorption principle of a perforated sound-absorbing structure can be explained by analogy with a Helmholtz resonator. Each hole in the perforated plate and its corresponding air layer can be considered a Helmholtz resonator. The air column in the neck of the resonator can be considered a mass. The enclosed cavity is much larger than the hole neck and acts as an air spring. The air column and enclosed cavity act like a spring vibration system with a fixed vibration frequency. When the frequency of the incident sound wave equals this fixed vibration frequency, the air column in the hole vibrates violently and rubs against the punched hole wall, converting the sound energy into heat.

[0026] Reflection, refraction, and transmission of sound waves all occur at the interface between two media. When a sound wave strikes an interface, some of the energy is reflected, forming a reflected wave, while some passes through the interface into the other medium, forming a refracted wave. The shape of the interface significantly influences the efficiency of reflection.

[0027] The punching size and perforation rate of the first steel plate and / or the second steel plate of the high sound insulation and sound absorption composite panel have an impact on the amount of sound insulation. Figure 4 and Figure 5 The perforation rate is the ratio of the sum of the punching areas of the perforated plate to the total area of the plate. Let d be the diameter of the circular hole, B is the spacing between the circular holes, and the perforation rate of the square arrangement of the punching holes is:

[0028] p=(π / 4)* (d / B) 2 * 100%

[0029] The perforation rate of the punching triangle arrangement is:

[0030] p=( )* (d / B) 2 * 100% Example 1

[0031] like Figure 1A high sound insulation and sound absorption composite panel adopts full-module specifications, including a first steel plate 1, a second steel plate 2, a rock wool layer 3, and an air layer 4. The first steel plate 1 and the second steel plate 2 have dense punching holes 5 on their surfaces. The first steel plate 1 and the second steel plate 2 are galvanized. The edges of the rock wool layer 3 and the air layer 4 are straight lines. Figure 4 , the arrangement of the punching holes 5 on the surface of the second steel plate 2 is square; Figure 6 A vibration damper 6 is also installed between the ceiling 7 and the wall 8 at the rigid connection between the high sound insulation and sound absorbing composite panel and the wall.

[0032] Example 2

[0033] like Figure 2 A high sound insulation and sound absorption composite panel adopts full-module specifications, including a first steel plate 1, a second steel plate 2, a rock wool layer 3, an air layer 4, and a surface of the second steel plate 2 having dense punching 5. PVC film is attached to the surface of the first steel plate 1 and the second steel plate 2. The edges of the rock wool layer 3 and the air layer 4 are broken lines; Figure 5 , the arrangement of the punching holes 5 on the surface of the second steel plate 2 is triangular; Figure 6 A vibration damper 6 is also installed between the ceiling 7 and the wall 8 at the rigid connection between the high sound insulation and sound absorbing composite panel and the wall.

[0034] Example 3

[0035] like Figure 3 A high sound insulation and sound absorption composite panel adopts full-module specifications, including a first steel plate 1, a second steel plate 2, a rock wool layer 3, an air layer 4, and a surface of the second steel plate 2 having dense punching 5. PET films are attached to the surfaces of the first steel plate 1 and the second steel plate 2. The edges of the rock wool layer 3 and the air layer 4 are wavy lines. Figure 5 , the arrangement of the punching holes 5 on the surface of the second steel plate 2 is triangular; Figure 6 A vibration damper 6 is also installed between the ceiling 7 and the wall 8 at the rigid connection between the high sound insulation and sound absorbing composite panel and the wall.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A high sound insulation and sound absorption composite panel, comprising a first steel plate, a rock wool layer, an air layer, a rock wool layer, and a second steel plate arranged in sequence, characterized in that: The surface of at least one of the first steel plate and the second steel plate is densely punched.

2. The high sound insulation and sound absorbing composite panel according to claim 1, characterized in that: The edge of the rock wool layer and the air layer is one of a straight line, a broken line and a wavy line.

3. The high sound insulation and sound absorbing composite panel according to claim 1, characterized in that: The surfaces of the first steel plate and the second steel plate are plated with a zinc layer.

4. The high sound insulation and sound absorbing composite panel according to claim 1, characterized in that: The first steel plate and the second steel plate are affixed with a film layer selected from the group consisting of PVC and PET.

5. The high sound insulation and sound absorbing composite panel according to claim 1, characterized in that: Vibration absorbers are also installed at the upper and lower ends of the high sound insulation attraction composite plate.

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