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Hydrodynamic noise silencer

A hydrodynamic and muffler technology, applied in the direction of pipes/pipe joints/fittings, mechanical equipment, pipe components, etc., can solve problems such as attenuation of hydrodynamic noise, attenuate hydrodynamic noise, reduce underwater radiated noise, and improve acoustic stealth. performance effect

Active Publication Date: 2019-10-15
CHINA SHIP DEV & DESIGN CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hydrodynamic noise muffler for the above-mentioned technical requirements. The present invention mainly solves two technical problems. Excellent noise reduction effect in a wide range of pressure and flow rate changes

Method used

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Embodiment Construction

[0017] The embodiments of the present invention will now be described in conjunction with the accompanying drawings, and the present invention is not limited to the following embodiments.

[0018] like Figure 1-Figure 3 As shown, a fluid dynamic noise muffler includes a muffler housing 1, a muffler assembly and a pressure adjustment device, the muffler assembly is arranged in the muffler housing, the pressure adjustment device is connected with the muffler housing, and is connected with the muffler assembly contact;

[0019] The muffler shell is a square structure, with connecting pipes 2 on the end faces on both sides, and connecting flanges 3 on the outer ends of the connecting pipes;

[0020] The muffler assembly includes a plurality of elastic corrugated plates 4, which are stacked up and down in the muffler shell, and the peaks and troughs of two adjacent elastic corrugated plates are arranged correspondingly one by one to form a grid end face;

[0021] The pressure re...

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Abstract

The invention relates to a hydrodynamic noise silencer. The hydrodynamic noise silencer comprises a silencer shell, a silencing assembly and a pressure adjusting device, wherein the silencer shell isof a square structure; connecting pipes are arranged on the two side end surfaces of the silencer shell; connecting flanges are arranged on the outer side ends of the connecting pipes; the silencing assembly is composed of a plurality of elastic corrugated plates stacked up and down in the silencer shell; wave crests and wave troughs of every two adjacent elastic corrugated plates are arranged ina one-to-one correspondence mode to form grid end faces; the pressure adjusting device comprises an adjusting bolt and a pressing plate; the pressing plate is arranged on the top surfaces of the elastic corrugated plates in the silencer shell; the adjusting bolt penetrates through a screw hole in the center of the top of the silencer shell; the bottom end of the adjusting bolt is connected with the pressing plate; and the top end of the adjusting bolt is higher than the top of the silencer shell. The hydrodynamic noise silencer is simple in structure, convenient to operate and capable of effectively reducing hydrodynamic noise of naval vessel pipelines, and a better silencing effect is achieved within a wider pressure and flow velocity change range.

Description

technical field [0001] The invention belongs to the technical field of ship pipeline vibration and noise control, in particular to a fluid dynamic noise muffler. Background technique [0002] There are many equipment, pipelines, and valves involved in the naval seawater system, and the configuration is extremely complicated. The hydrodynamic noise generated by noise sources such as equipment, pipelines, and valves in the system will flow outward from the sea port with the suction and discharge of seawater. Radiation is one of the main sources of underwater radiated noise of ships, which directly affects the concealment of ships. [0003] At the same time, due to the wide range of parameters of the working medium of the seawater system, considering the diving depth, the pressure range may range from a few tenths of MPa to several MPa, and considering different working conditions, the flow rate may range from a few tenths of meters per second to several Ten meters per second,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/033
CPCF16L55/0336F16L55/0338
Inventor 龚强吴崇建徐鑫彤杨荣陈乐佳
Owner CHINA SHIP DEV & DESIGN CENT
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