扩张式消声器降低管道流体噪声的试验研究

摘要

对于液体（润滑油、水）泵的管流噪声，针对一齿轮泵和叶片泵的出口流动噪声设计了扩张管，并进行了试验测试。结果表明，对于泵的额定工况，所采用的方法可达到管壁振动加速度降低6－10分贝。%In oredr to reduce the noise from the liquid flow in the outlet pipe of pupmp，expanded-mufflers are designed for two kinds of pumps with gears and blades，and experiments are conducted.The reduction of noise lever measured in the acceleration on the pipe wall is obtained about 6 to 10 decibel.