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Underwater double-layer acoustic board and underwater sound transceiving noise reduction structure

A sound-absorbing panel and double-layer technology, which is applied in the field of sonar systems, can solve the problems of not being able to use it deep underwater, the sound-absorbing material is not resistant to underwater, and it is difficult to achieve light and thin, so as to achieve strong pressure resistance and improve stability. and damping effect, the effect of improving the working stability

Pending Publication Date: 2021-12-03
浙江东溟科技有限公司
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  • Abstract
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Problems solved by technology

The thickness of traditional sound-absorbing materials or sound-insulating materials needs to be designed according to the working frequency used. It is difficult to achieve lightness and thinning at low frequencies, and general sound-absorbing materials are not resistant to underwater and cannot be used in deep water. Therefore, there is an urgent need for a medium- Low-frequency and pressure-resistant thin-surface sound-absorbing structure

Method used

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] This embodiment discloses an underwater double-layer sound-absorbing panel, such as Figure 1-3 As shown, it includes a support frame 2, two supports, and several sound-absorbing columns 3. Two support plates 1 are fixed on both sides of the support frame 2 to form a sound-absorbing panel body with an accommodation space inside, and the sound-absorbing columns 3 are fixed in the accommodation. In the storage space, the two ends of the sound-absorbing co...

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Abstract

The invention discloses an underwater double-layer acoustic board and an underwater sound transceiving noise reduction structure, relates to the technical field of sonar systems, and aims to solve the problem that underwater sound transceiving equipment is affected by noise. The underwater double-layer acoustic board comprises a body and a plurality of sound absorption columns, the body is composed of a supporting frame and two supporting plates and provided with a containing space, and the sound absorption columns are fixed in the containing space and abut against supporting blocks on the two sides. The sound absorption columns are made of shock absorption and sound absorption rubber, the shock absorption and sound absorption rubber comprises a rubber base material and capsule particles mixed in the rubber base material, the capsule particles comprise capsule-shaped coating layers, the coating layers are filled with foaming rubber, and a plurality of short glass fibers are bonded to the peripheries of the coating layers. According to the sound absorption structure for absorbing underwater noise, the sound absorption structure is fixed to the metal shell, the inner cavity of the body structure is filled with air, a matched thin-face double-layer sound absorption plate can be manufactured according to the surface line type of a laying structure, and the sound absorption effect of the whole equipment is effectively improved.

Description

technical field [0001] The present invention relates to the technical field of sonar systems, more specifically, it relates to an underwater double-layer sound-absorbing board, and also relates to an underwater sound transmitting and receiving noise reduction structure for underwater equipment. Background technique [0002] At present, underwater vehicles and the like usually need to install underwater acoustic transceiver equipment on the outer surface of the structure, but there are many problems in the installation and use of underwater acoustic transceiver equipment. First of all, in order to enhance the underwater pressure resistance of underwater vehicles, etc., the shell of the underwater structure is generally a metal shell with a complex structure. The underwater acoustic transceiver equipment has a great impact; secondly, in order to ensure the streamlined structure of the underwater structure shell, the underwater acoustic transceiver equipment needs to be as thin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/521B32B15/01B32B3/08B32B7/08B63C11/52
CPCG01S7/521B32B15/01B32B3/085B32B3/08B32B7/08B63C11/52B32B2307/102B32B2307/56
Inventor 冷长丽朱振涛常仁杰
Owner 浙江东溟科技有限公司
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