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Volcanic rock noise elimination tile

A technology of volcanic stones and anechoic tiles, which is applied in the direction of sound-emitting devices, ships, and special-purpose ships, and can solve problems such as unsatisfactory effects and poor absorption of low-frequency sound waves

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] However, the existing anechoic tile technology still has many deficiencies in reducing the radiated noise and self-noise of underwater moving bodies. The absorption effect is poor, and the working environment and detection distance of the underwater moving body's own sonar need to be improved and improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: The volcanic stone anechoic tile used for submarines is composed of a natural volcanic stone hollow frame 4 with a certain radian and thickness, a plurality of natural volcanic stone cones 5 and a synthetic rubber 3 vulcanized and encapsulated into an integral structure. The natural volcanic stone hollow frame body 4 is a block-shaped natural volcanic stone hollow frame body structure with a certain radian. The porosity of natural volcanic rock is 82%. The holes in natural volcanic rock 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; The stone hollow frame 4 is in the shape of a hollow brick with an aspect ratio of 100:50. The curvature of the upper and lower outer surfaces of the volcanic stone hollow frame 4 is consistent with the curvature of the outer surface of the submarine. After being encapsulated by the synthetic rubber 3, the overall thickness ...

Embodiment 2

[0046] Example 2: The volcanic stone anechoic tile used for submarines is composed of two rectangular volcanic stone slabs with a certain radian and thickness, two square volcanic stone slabs, six volcanic stone cones 5 and a synthetic rubber 3 that vulcanizes and encapsulates it into an integral structure . The volcanic stone anechoic tile is a block structure with a certain radian. The porosity of volcanic stone is 96%, and the pores on it are naturally formed and uneven, with a pore diameter of 0.2mm to 5mm and a thickness of 15mm; synthetic rubber has holes of irregular size and shape; the aspect ratio of volcanic stone is 100:50 The shape of the hollow brick is consistent with the curvature of the outer surface of the submarine. After being encapsulated by synthetic rubber, it forms a volcanic stone anechoic tile with an overall thickness of 70mm.

[0047] The volcanic stone anechoic tile 2 of the present invention is based on the shape of the submarine, selects a suit...

Embodiment 3

[0048] Example 3: The volcanic stone anechoic tile used for torpedoes is composed of volcanic stone 4 with a certain radian and thickness, a plurality of conical volcanic stones 5 and synthetic rubber 3 which is vulcanized and encapsulated into an integral structure. The volcanic stone anechoic tile is a block structure with a certain radian. 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 2 mm and a thickness of 5 mm; synthetic rubber 3 has holes of irregular size and shape; volcanic rock The anechoic tile is a hollow brick shape with a length-to-width ratio of 100:50. Its curvature is consistent with that of the outer surface of the torpedo. After being encapsulated by synthetic rubber, it forms a volcanic stone anechoic tile with an overall thickness of 28mm.

[0049] This anechoic tile is based on the shape of the torpedo, selects the appropriate volcanic stone and makes a hollow frame with a ce...

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Abstract

The invention belongs to the technical field of noise elimination, vibration reduction and noise reduction, and relates to a volcanic rock noise elimination tile, in particular to a noise elimination tile made from volcanic rocks and synthetic rubber. The volcanic rock noise elimination tile is composed of a natural volcanic rock hollow frame, multiple natural volcanic rock cones arranged in the natural volcanic rock hollow frame, and a synthetic rubber block for vulcanization and package of an assembled and combined body of the natural volcanic rock hollow frame and the multiple natural volcanic rock cones, wherein outer walls of both the upper surface board and the lower surface board of the natural volcanic rock hollow frame have certain radian; holes of the selected volcanic rocks are formed naturally in a non-uniform manner; the radian of the volcanic rock noise elimination tile is consistent with that of the surface of an underwater moving body; after packaged by the synthetic rubber, the volcanic rock hollow frame and the volcanic rock cones form the noise elimination tile together. The volcanic rock noise elimination tile can absorb sound waves of active sonar, remarkably reduce reflection strength of sound waves of the active sonar, suppress vibration generated by the underwater moving body itself, prevent machine noise inside the underwater moving body from radiating to the underwater moving body, remarkably lower self noise of the underwater moving body, reduce operating range of passive sonar of a detection side and the like.

Description

technical field [0001] The invention relates to a volcanic rock sound-absorbing tile and a manufacturing method thereof, in particular to a volcanic stone-made sound-absorbing tile made of 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. The detection of the target 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 radiation noise level of the underwater mo...

Claims

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Application Information

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IPC IPC(8): B63G8/34G10K11/16
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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