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Disassembly type ship noise elimination ventilation pipe

A ventilation pipe and detachable technology, which is applied in the direction of hull ventilation/heating/cooling, pipe components, ship parts, etc., can solve the problems of high cost, non-replaceable sound-absorbing materials, and large occupied space, so as to improve the noise reduction performance , good application prospects, and the effect of expanding the anechoic frequency band

Inactive Publication Date: 2020-02-11
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Compared with the traditional pipeline vibration and noise reduction structure, the present invention has stronger vibration and noise reduction capabilities, and also overcomes the problems of high cost, large occupied space, and non-replaceable sound-absorbing materials.

Method used

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  • Disassembly type ship noise elimination ventilation pipe
  • Disassembly type ship noise elimination ventilation pipe
  • Disassembly type ship noise elimination ventilation pipe

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Embodiment Construction

[0027] The present invention is described in more detail below in conjunction with accompanying drawing example, further clarifies the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand the present invention Modifications of various equivalent forms of the invention all fall within the scope defined by the appended claims of the present application.

[0028] like Figure 1-Figure 4 As shown, a detachable marine noise reduction ventilation pipe includes an outer sleeve and an inner sleeve, the inner sleeve is inserted into the outer sleeve, and a sound-absorbing material is filled between the outer sleeve and the inner sleeve.

[0029] In this embodiment, the inner sleeve is composed of a perforated section and a non-perforated section with several through holes on the cyli...

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Abstract

The invention discloses a disassembly type ship noise elimination ventilation pipe. The disassembly type ship noise elimination ventilation pipe comprises an outer sleeve and an inner sleeve and is characterized in that the inner sleeve is inserted in the outer sleeve in a penetrating manner, and the position between the outer sleeve and the inner sleeve is filled with a sound absorption material.A perforated plate is applied to be combined with an acoustic material, the noise elimination frequency segment is expanded, the noise elimination property of a silencer is improved, the ventilationpipeline noise is effectively reduced, and the runner diameter of an air pipe cannot be changed; and the air flow resistance is small, the structure is compact, and replacing and maintaining of a sound absorption material can be facilitated.

Description

technical field [0001] The invention belongs to the technical field of vibration reduction and noise reduction, and relates to a noise reduction ventilation pipe, in particular to a detachable marine noise reduction ventilation pipe. Background technique [0002] In order to improve the comfort of the crew's working environment, most ships are equipped with marine air-conditioning and ventilation systems, and the ventilation duct is an important part of the air-conditioning and ventilation system. Since the air-conditioning ventilation ducts extend to each cabin, the noise generated by mechanical devices such as air-conditioning will also enter the cabin along with the airflow in the ducts, thereby affecting the comfort of the cabin environment. Since there are many pipes in the ventilation system, it is easy to become an important way to transmit noise, so noise reduction for pipes has become an important issue in ship noise control. Pipeline noise is mainly caused by the ...

Claims

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Application Information

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IPC IPC(8): B63J2/10F16L55/033
CPCB63J2/10F16L55/033F16L55/0336
Inventor 温华兵袁桐桐张帆渠浩孙玉东黄伟稀
Owner JIANGSU UNIV OF SCI & TECH
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