扩压器对离心式压缩机性能与辐射噪声影响研究
发布时间：2018-09-17 20:16
【摘要】：在工业发展的今天,压缩机被广泛应用于钢铁、电力、造船、石油、汽车工业、航空航天等诸多领域,可见压缩机己占有举足轻重的位置。在压缩机的使用过程中,人们不但对其性能要求越来越高,对其振动与辐射噪声问题也越来越重视。扩压器是压缩机中的重要部件,扩压器的类型不同会导致压缩机的性能和振动噪声的不同。本文基于仿真和实验的方法,研究扩压器对压缩机性能和辐射噪声影响的机理,找到压缩机振动和噪声的来源。这对提高压缩机性能,降低噪声,改善人们工作、生活环境质量具有很重要的意义。 本课题以沈鼓集团生产的离心压缩机为研究对象,通过对叶轮进行仿真计算分析,研究离心压缩机不同类型扩压器的流场,经计算获得流场的总压分布；通过压缩机性能试验,噪声试验以及辐射噪声测试等一系列的试验,研究了不同类型的扩压器对压缩机的性能和辐射噪声的影响。 本文的具体研究工作如下： (1)流场仿真分析。分析了模型级离心式压缩机不同形状扩压器内部流场,通过CFD计算,获得了四种不同类型扩压器内部流场的总压分布。改变流量工况,对比四种不同类型扩压器的性能曲线。 (2)开展了不同扩压器对压缩机性能影响的试验研究。针对不同扩压器对压缩机性能的影响,主要考虑压缩机扩压器对模型级性能的影响,开展了级性能测试研究,并分析压力脉动对性能的影响。对压缩机叶轮入口、扩压器入口以及扩压器出口的压力脉动数值以及机壳和管道的振动数据进行了采集和分析比较；主要考虑对压缩机工作时内部的压力脉动和管道以及壳体振动的影响。 (3)扩压器对辐射噪声影响分析、测试。对安装有不同扩压器的压缩机进行噪声测试,对声压信号进行相关处理,通过处理结果对比不同扩压器对压缩机噪声的影响,确定噪声源可对其进行控制并为压缩机的设计及改进提供有效地数据支持。 (4)辐射噪声快速预测。以沈鼓集团生产的MCL系列离心压缩机为对象,通过对压缩机进行多组噪声测试,研究压缩机噪声与其本身工作参数的关系,找到噪声预测的经验公式；确定压缩机的主要噪声声源,并对噪声源进行仿真预测及改进设计,达到控制噪声的目的。
[Abstract]:With the development of industry, compressors are widely used in steel, electricity, shipbuilding, petroleum, automobile industry, aerospace and so on. In the process of using compressor, people pay more and more attention not only to its performance, but also to its vibration and radiation noise. Diffuser is an important part in compressor. Different types of diffuser will lead to different performance and vibration noise of compressor. Based on the method of simulation and experiment, this paper studies the mechanism of the influence of diffuser on compressor performance and radiated noise, and finds out the source of compressor vibration and noise. It is of great significance to improve compressor performance, reduce noise, improve people's working and living environment quality. Taking centrifugal compressor produced by Shengu Group as the research object, the flow field of different types of diffuser of centrifugal compressor is studied through simulation calculation and analysis of impeller, the total pressure distribution of flow field is obtained by calculation, and the performance test of compressor is carried out. A series of experiments such as noise test and radiation noise test are carried out to study the effect of diffuser of different types on compressor performance and radiated noise. The research work of this paper is as follows: (1) flow field simulation analysis. The internal flow field of different shape diffuser of model stage centrifugal compressor is analyzed. The total pressure distribution of four different types of diffuser is obtained by CFD calculation. The performance curves of four different types of diffusers are compared by changing the flow conditions. (2) the effect of different diffusers on compressor performance is studied experimentally. In view of the influence of different diffuser on compressor performance, the influence of compressor diffuser on model stage performance is considered, the stage performance test is carried out, and the influence of pressure pulsation on performance is analyzed. The pressure pulsation values of compressor impeller inlet diffuser inlet and diffuser outlet as well as the vibration data of casing and pipeline are collected and analyzed. This paper mainly considers the influence of pressure pulsation inside the compressor and the vibration of pipe and shell. (3) the influence of diffuser on radiated noise is analyzed and tested. The noise of compressor with different diffuser is tested, and the signal of sound pressure is processed. The effect of different diffuser on the noise of compressor is compared by processing results. The noise source can be determined to control it and provide effective data support for the design and improvement of compressor. (4) Rapid prediction of radiated noise. Taking the MCL series centrifugal compressor produced by Shengu Group as the object, the paper studies the relationship between the compressor noise and its working parameters, and finds the empirical formula of noise prediction. The main noise sources of the compressor are determined, and the noise sources are simulated, predicted and improved to achieve the purpose of noise control.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH452
本文编号：2246973
[Abstract]:With the development of industry, compressors are widely used in steel, electricity, shipbuilding, petroleum, automobile industry, aerospace and so on. In the process of using compressor, people pay more and more attention not only to its performance, but also to its vibration and radiation noise. Diffuser is an important part in compressor. Different types of diffuser will lead to different performance and vibration noise of compressor. Based on the method of simulation and experiment, this paper studies the mechanism of the influence of diffuser on compressor performance and radiated noise, and finds out the source of compressor vibration and noise. It is of great significance to improve compressor performance, reduce noise, improve people's working and living environment quality. Taking centrifugal compressor produced by Shengu Group as the research object, the flow field of different types of diffuser of centrifugal compressor is studied through simulation calculation and analysis of impeller, the total pressure distribution of flow field is obtained by calculation, and the performance test of compressor is carried out. A series of experiments such as noise test and radiation noise test are carried out to study the effect of diffuser of different types on compressor performance and radiated noise. The research work of this paper is as follows: (1) flow field simulation analysis. The internal flow field of different shape diffuser of model stage centrifugal compressor is analyzed. The total pressure distribution of four different types of diffuser is obtained by CFD calculation. The performance curves of four different types of diffusers are compared by changing the flow conditions. (2) the effect of different diffusers on compressor performance is studied experimentally. In view of the influence of different diffuser on compressor performance, the influence of compressor diffuser on model stage performance is considered, the stage performance test is carried out, and the influence of pressure pulsation on performance is analyzed. The pressure pulsation values of compressor impeller inlet diffuser inlet and diffuser outlet as well as the vibration data of casing and pipeline are collected and analyzed. This paper mainly considers the influence of pressure pulsation inside the compressor and the vibration of pipe and shell. (3) the influence of diffuser on radiated noise is analyzed and tested. The noise of compressor with different diffuser is tested, and the signal of sound pressure is processed. The effect of different diffuser on the noise of compressor is compared by processing results. The noise source can be determined to control it and provide effective data support for the design and improvement of compressor. (4) Rapid prediction of radiated noise. Taking the MCL series centrifugal compressor produced by Shengu Group as the object, the paper studies the relationship between the compressor noise and its working parameters, and finds the empirical formula of noise prediction. The main noise sources of the compressor are determined, and the noise sources are simulated, predicted and improved to achieve the purpose of noise control.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH452
【参考文献】
相关期刊论文 前10条
1 王继先,冯能莲,蔡曾华;声强测量及其在客车噪声源识别中的应用[J];安徽农业大学学报;2001年02期
2 张伟;宫武旗;樊孝华;席光;;高速离心风机叶片扩压器前缘倾角对其性能影响的实验研究[J];工程热物理学报;2009年08期
3 刘小民,席光,王尚锦,安卫平;叶片扩压器对改进离心式压缩机性能的实验研究[J];化工机械;1998年02期
4 王建群,南金瑞,孙逢春,付立鼎;基于LabVIEW的数据采集系统的实现[J];计算机工程与应用;2003年21期
5 陈德江,王尚锦;离心式压缩机叶片扩压器的实验研究[J];流体机械;1997年11期
6 甘长胜,孟昭朋,林泽安,陈俊;压缩机噪声测量的声强法研究[J];流体机械;1997年11期
7 莫子高,史建军,关旭,陈明,张春梅,邱长安;无叶扩压器宽度对压缩机性能影响的实验验证[J];流体机械;2004年01期
8 胡春波;曾卓雄;;离心压缩机扩压器叶片不稳定脉动力及气动噪声预测[J];流体机械;2006年03期
9 施小将;叶片扩压器在改进离心压缩机性能中的应用[J];流体机械;2002年03期
10 周颂东;五种径向扩压器与同一离心压气机叶轮相互匹配的试验研究[J];燃气涡轮试验与研究;2005年01期
，本文编号：2246973
本文链接：https://www.wllwen.com/kejilunwen/jixiegongcheng/2246973.html
