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Combined-type anechoic tile

A sound-absorbing tile and composite technology, which is applied in the direction of sound-generating equipment, underwater operation equipment, ships, etc., can solve the problems of poor low-frequency sound wave absorption effect and unsatisfactory effect

Inactive Publication Date: 2013-07-03
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current anechoic tile technology still has many deficiencies in reducing the radiated noise and self-noise of underwater moving bodies. Poor absorption

Method used

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  • Combined-type anechoic tile
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  • Combined-type anechoic tile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: The composite anechoic tile 2 used for submarines is made of a porous light metal material aluminum plate with a certain radian and thickness to make a hollow frame 4, a plurality of natural volcanic stone cones 5, and a synthetic rubber that vulcanizes and encapsulates it into an integral structure 3 composition. The porosity of volcanic rock is 82%, and the pores on it are naturally formed and uneven, with a pore diameter of 0.5mm to 10mm and a thickness of 20mm; synthetic rubber 3 has holes of irregular size and shape; porous light metal materials The hollow frame is made of 4 hollow bricks with a ratio of length to width of 100:50. Its curvature is consistent with the curvature of the outer surface of the submarine. After being encapsulated by synthetic rubber, they form a sound-absorbing tile with an overall thickness of 80mm.

[0036] According to the shape of the submarine, the composite anechoic tile is selected from a suitable porous light metal ma...

Embodiment 2

[0037] Example 2:Composite anechoic tiles for submarines are made of porous lightweight metal honeycomb paper blocks with a certain radian and thickness to make a hollow frame 4, a plurality of volcanic stone cones 5, and synthetic rubber that vulcanizes and encapsulates it into an integral structure 3 composition. Volcanic rock is a massive structure with a certain curvature. The porosity of volcanic rock is 96%, and the pores on it are naturally formed and uneven, with a pore diameter of 0.2 mm to 5 mm and a thickness of 15 mm; synthetic rubber has holes of irregular size and shape; porous lightweight metal material aluminum block The hollow brick shape with an aspect ratio of 100:50, its curvature is consistent with the curvature of the outer surface of the submarine, and it is encapsulated by synthetic rubber to form a sound-absorbing tile with an overall thickness of 70mm.

[0038] This anechoic tile is based on the shape of the submarine, selects the appropriate porou...

Embodiment 3

[0039] Example 3: Composite anechoic tiles for torpedoes are composed of a hollow frame 4, a plurality of volcanic stone cones 5, and vulcanization and encapsulation of it into an integral structure from a porous lightweight metal material block with a certain radian and thickness of aluminum foam. Rubber 3 composition. Volcanic rock is a massive structure with a certain curvature. The porosity of volcanic stone is 90%, and the pores on it are naturally formed and uneven, with a pore diameter of 0.2 mm to 2 mm and a thickness of 5 mm; synthetic rubber has holes of irregular size and shape; porous lightweight metal material aluminum foam The hollow frame is made of hollow bricks with a length-to-width ratio of 100:50. Its curvature is consistent with the curvature of the outer surface of the torpedo. After being encapsulated by synthetic rubber, it forms a sound-absorbing tile with an overall thickness of 28mm.

[0040] According to the shape of the torpedo, the composite an...

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Abstract

The invention belongs to the technical field of noise elimination, vibration reduction and noise reduction, and relates to a combined-type anechoic tile, in particular to the anechoic tile made of conic vesuvianite, porous light-weight metal material and synthetic rubber. The anechoic tile is formed by the porous light-weight metal material block with certain radian and thickness, conic vesuvianite and the synthetic rubber block used for sulphurating and packaging the porous light-weight metal material block and the conic vesuvianite into an integral structure; the selected vesuvianite and vesuvianite holes are formed naturally, and are uneven; the radian of the porous light-weight metal material block is consistent with the surface radian of an underwater moving body; and the anechoic tile is formed after packaging of the synthetic rubber block. The anechoic tile can absorb acoustic waves of active sonar, remarkably reduces the reflection strength of acoustic waves of the active sonar, can further restraint vibration generated by the underwater moving body, isolates the noise of the machine, radiating to the underwater moving body, inside the underwater moving body, remarkably reduces the self noise of the underwater moving body, and reduces the operating range of passive sonar of the detection party.

Description

technical field [0001] The invention relates to a composite sound-absorbing tile, in particular to a hollow frame made of volcanic rock, a porous light metal material and synthetic rubber, and belongs to the technical field of noise reduction, vibration reduction and noise reduction. Background technique [0002] When the underwater moving body moves underwater, due to its huge volume and its structure as a cylindrical rigid body, there is a strong reflection of the enemy's active sonar detection signal, that is, the target strength is high, and it is easy to be detected by the enemy's target. If it is detected, it is not conducive to the concealment and security of one's own side. [0003] In addition, when the underwater moving body moves underwater, strong radiation noise is often generated due to the rotation of the spiral descender, the reciprocating vibration of the machine and the movement of the fluid. If the radiated noise level of the underwater moving body is hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63G8/34G10K11/168B32B15/04B32B18/00B32B25/04
Inventor 刘增力张亚琴全海燕杨秀梅文永进
Owner KUNMING UNIV OF SCI & TECH
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