Low-noise drainage pipeline

A technology for drainage pipelines and low noise, applied in the field of pipelines, can solve the problems of noise disturbance of drainage pipelines and other problems, and achieve the effects of reducing noise intensity, noise reduction and friction reduction.

Inactive Publication Date: 2014-04-30
SANMING IND SCI & TECH TIANJINCO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned technologies, and provide a low-noise drainage pipe to provide product and technical support

Method used

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Embodiment

[0016] Referring to the accompanying drawings for details, the present invention provides a low-noise drainage pipeline, which includes a pipeline main body 1, and a plurality of protrusions 2 are provided on the inner wall surface of the pipeline main body to form an uneven surface on the inner wall of the pipeline. The surface of several protrusions on the uneven surface of the inner wall of the pipeline and the surface of the valley bottom between the protrusions are non-smooth surfaces. The convex shape depends on the pipe diameter and noise reduction standard. This embodiment adopts a hemispherical shape. Due to several protrusions, the direction and speed of the water flow change when passing through the pipe wall, which weakens the water hammer effect and reduces the pressure of the water flow. At the same time, the positive and negative ions produced by the skin effect of the water flow The interaction between the pipes weakens the compression and suction of the air in...

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Abstract

The invention relates to a low-noise drainage pipeline. The low-noise drainage pipeline comprises a pipeline body. The low-noise drainage pipeline is characterized in that the surface of the inner wall of the pipeline body is provided with a plurality of protrusions to form an unsmooth surface of the inner wall of the pipeline. Compared with the prior art, the low-noise drainage pipeline has the advantages that the protrusions are arranged on the inner wall of the drainage pipeline to form a non-sticky structure, the unsmooth surface is formed on the non-sticky structure, the energy of sound waves is absorbed based on the lotus leaf surface tension principle, a water flow fracture face structure and a local water flow direction are changed, the frequency of noise produced by friction between the water flow and the pipe wall is fairly reduced, resonance produced by noise caused by flowing of fluid in a sewer is weakened, and finally the purpose of lowering noise of the sewer and a water channel is achieved. The experimental result shows that the noiseless effect is obviously superior to that of other pipelines, and the noise of the plastic pipeline is lower than 45 decibels.

Description

technical field [0001] The invention belongs to pipelines, in particular to a plastic low-noise drainage pipeline suitable for construction. Background technique [0002] The noise of building drainage pipe system has become a problem that generally plagues the lives of residents and seriously affects the quality of human life. The noise source of construction pipeline mainly comes from the flow rate of liquid in the pipeline and the pressure generated. Among them, the noise of running water is mainly the noise generated by the friction between the water flow and the pipe wall, and the noise generated by the change of the size of the water flow section and the change of the direction of the water flow. Duct noise is generated within the duct and transmitted along the duct. [0003] At present, China has established the first building drainage pipeline system noise test room, studied and compiled the "Drainage Pipeline Noise Test Room and Test Method" standard, and tested a...

Claims

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Application Information

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IPC IPC(8): F16L9/12F16L55/033E03C1/122
CPCF16L9/21E03C1/122
Inventor 李殿奎郝一生李唯雄
Owner SANMING IND SCI & TECH TIANJINCO
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