Liquid pipeline silencing system based on underwater wide-low-frequency sound insulation metal-based metamaterial design

A technology for liquid pipelines and sound insulation materials, which is applied in the direction of pipe components, mechanical equipment, pipes/pipe joints/pipes, etc. simple structure

Active Publication Date: 2021-08-13
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in order to solve the problem of low-frequency noise suppression efficiency of the existing muffler under the liquid pressure in the pipe, the present invention designs a liquid pipeline muffler system based on underwater wide and low-frequency sound insulation metal-based metamaterials. The sound insulation material has extremely low impedance, which can effectively block underwater wide and low frequency underwater sound. At the same time, its base material is metal material, which has good bearing capacity

Method used

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  • Liquid pipeline silencing system based on underwater wide-low-frequency sound insulation metal-based metamaterial design
  • Liquid pipeline silencing system based on underwater wide-low-frequency sound insulation metal-based metamaterial design
  • Liquid pipeline silencing system based on underwater wide-low-frequency sound insulation metal-based metamaterial design

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Embodiment 1

[0056] A liquid pipeline noise reduction system designed based on underwater wide and low frequency sound insulation metal-based metamaterials. Its noise reduction effect is realized based on wide and low frequency underwater sound insulation materials: relying on the principle of impedance mismatch, the material has extremely low impedance , it has a better effect on wide and low frequency underwater sound.

[0057] Such as Figure 3-4 and Figure 6-7 As shown, the overall structure of the liquid pipeline muffler system is divided into five parts, which are respectively the inlet cylinder tube 8 at the head end of the muffler system connected to the upper water inlet pipe and the connecting flange 5, which are connected to the lower outlet pipe The outlet cylindrical through pipe 9 and the connecting flange 5 at the end of the muffler system, and the square main structure 3 for muffler. The square main structure 3 contains a cavity inside, and the inside of the cavity is cov...

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Abstract

The invention provides a liquid pipeline silencing system based on underwater wide-low-frequency sound insulation metal-based metamaterial design. The liquid pipeline silencing system comprises a body structure, an inlet flange, an inlet cylinder through pipe, an outlet flange and an outlet cylinder through pipe, the two ends of the body structure are in sealed connection with the inlet cylinder through pipe and the outlet cylinder through pipe respectively; the liquid inlet end of the inlet cylinder through pipe is connected with the inlet flange and connected with a flange of a water inlet pipe of a pipeline through the inlet flange, and the liquid outlet end of the outlet cylinder through pipe is connected with an outlet flange and connected with a flange of a water outlet pipe of the pipeline through the outlet flange; and a cavity communicating with the inlet cylinder through pipe and the outlet cylinder through pipe is formed in the body structure, and two or four sound insulation material plates wrapped and sealed by rubber are placed in the cavity and tightly attached to the inner wall. The limitation of a traditional material is broken through, and wide and low frequency sound insulation of liquid in the pipeline is achieved through the special underwater wide and low frequency sound insulation metal-based metamaterial.

Description

technical field [0001] The invention relates to the technical field of liquid pipeline noise reduction and underwater sound propagation control, in particular, to a liquid pipeline noise reduction system designed based on underwater wide and low frequency sound insulation metal-based metamaterials. Background technique [0002] The liquid pipeline system can deliver liquid media to the destination in a directional manner to meet engineering needs, and is widely used in the fields of industrial production and military equipment. For example, hydraulic pipes inside spacecraft and submarines, oil pipes on offshore platforms, etc., liquid pipes all play an important role. However, the liquid pipeline itself is mostly made of solid materials or metals. When these pipelines are in use, there will be a large amount of pipeline structure vibration noise radiation and low-frequency noise radiation inside the liquid. When these noises resonate with the structure, they will affect the ...

Claims

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Application Information

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IPC IPC(8): F16L55/033
CPCF16L55/033F16L55/0336
Inventor 胡更开赵炳昊张若军刘晓宁
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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