离心式压缩机噪音与振动控制技术综述

离心式压缩机在工业领域的应用广泛,然而其运行过程中产生的噪音和振动问题也备受关注。压缩机的噪音和振动不但会对附近环境造成影响,干扰居民生活质量,还会给人体健康带来消极影响,例如损害听力、神经系统紊乱等。因此,对压缩机噪音和振动进行管控早就变成了工程领域非常关键的研究课题。为了有效控制这些问题,提高设备的运行效率和可靠性,本文将对离心式压缩机的噪音与振动控制技术进行简要综述。基于此,本文主要分析了压缩机噪音与振动的特性,探讨其对环境与人体造成的影响,并总结常见的控制技术及其应用实践,旨在为相关研究和工程实践提供参考和指导,促进压缩机设备的安全、高效运行,以及建设更加舒适、健康的工作和生活环境。

Effects of Diffuser Vane Geometry on Interaction Noise Generated from a Centrifugal Compressor

The characteristics of interaction tone noise radiated from a centrifugal compressor with a vaned diffuser are discussed by experiments, including visualization techniques using the oil-film method. Research attention is paid to the leading edge geometries of the diffuser vanes that are deeply related to the generation mechanism of the interaction tone noise. The compressor-radiated noise can be reduced by several decibels by setting some clearances in both the hub and shroud surfaces of the diffuser wall along with some decline in the pressure-rise coefficient. Since the decline turned out to be caused by the flow impingement and also by the secondary flow within the diffuser passages, several new types of diffuser vane geometries which do not detract from both the performance and noise level are developed and utilized for the experiments. The presented diffuser vane geometries will offer a few basic guidelines for the diffuser vane design.