摘要
提出了一种既能减小管路振动又能衰减流体压力脉动的管路消振器结构。该结构将流体消振器扩张室设计成弹性壁 ,随着流体脉动压力的变化 ,使扩张室的体积发生变化 ,以降低不可压缩流体脉动压力。理论计算和试验验证表明 ,该弹性壁结构对降低管路流体脉动压力和振动是可行的。在 80 Hz以内理论计算值与试验值较为一致。从实际配机试验结果看 。
In this paper, a new pipe attenuator that can reduce both the pipe vibration and the pulsating fluid pressure is designed and developed. The attenuator structure has a cylindrical outline with stiff outer skin and an elastic wainscot, so the inner space can be varied with the pulsating fluid pressure. The theoretical model is established, and the insert loss of the pipe attenuator is derived. In order to verify the correctness of the mathematical model and the effectiveness of the pipe attenuator, the experimental investigation of a pump pipeline with the pipe attenuator prototype was performed at two pressures, 1 and 2 MPa, in the frequency range 0～5kHz. The experimental results show that the pipe attenuator can attenuate the pulsating fluid pressure up to 16 dB at 0～3.2kHz and reduce the pipe vibration nearly to 14～20 dB at 0～5kHz. The theoretical estimated value is comparatively agreed with the experimental one within 80Hz.
出处
《中国造船》
EI
CSCD
北大核心
2003年第1期39-45,共7页
Shipbuilding of China
