Experimental study on noise reduction effect of a muffler inserted in liquid transporting pipeline

In order to reduce the noise of liquid transporting pipelines caused by the motion of the power unit, a kind of compact hydrodynamic muffler used in pipes with small diameters is proposed which achieves good vibration damping as well as hydrodynamic noise reduction. Based on the rubber damper tube,...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2013-01, Vol.52 (2), p.22043-6
Main Authors: Du, T, Xu, W W, Wu, D Z, Wang, L Q
Format: Article
Language:English
Subjects:
Dampers
Hydrodynamics
Insertion loss
Liquids
Low frequencies
Mufflers
Noise
Noise control
Noise reduction
Performance enhancement
Rubber
Transportation
Tubes
Vibration damping
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Summary:In order to reduce the noise of liquid transporting pipelines caused by the motion of the power unit, a kind of compact hydrodynamic muffler used in pipes with small diameters is proposed which achieves good vibration damping as well as hydrodynamic noise reduction. Based on the rubber damper tube, according to the structure characteristics, the muffler is composed of two main parts, the rubber damper tube and the inner noise reducing structure. Experiment on insertion loss of the muffler in stationary state is conducted. It is found that the rubber damper tube itself has a good performance at noise reducing at the frequency band considered here, total insertion loss values can reach 10 dB and the inner structures improve the performance of the muffler at low frequency band.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/52/2/022043