大流量高压燃烧加热器振动加速度测试分析

刘梦坤; 唐志共; 朱超; 金烜; 曹晓梅

doi:10.7638/kqdlxxb-2023.0041

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大流量高压燃烧加热器振动加速度测试分析

研究论文 | 更新时间：2026-05-28

- 大流量高压燃烧加热器振动加速度测试分析
- Vibration acceleration test and analysis of large flow high-pressure combustion-heater
- 空气动力学学报 2024年42卷第3期页码：83-91
- 作者机构：
  
  中国空气动力研究与发展中心,绵阳,621000
- 作者简介：
  
  刘梦坤（1998—），男，湖北浠水人，硕士研究生，研究方向：动力系统振动测试技术. E-mail：morykiug_81964421@foxmail.com
  朱超*，副研究员，研究方向：大型高温地面试验设备研制和试验技术研究 . E-mail：zchf@163.com
- 基金信息：
- DOI：10.7638/kqdlxxb-2023.0041
  中图分类号： TB52
- 纸质出版：2024
- 稿件说明：
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刘梦坤, 唐志共, 朱超, 等. 大流量高压燃烧加热器振动加速度测试分析[J]. 空气动力学学报, 2024, 42(3): 83−91.

LIU Mengkun, TANG Zhigong, ZHU Chao, et al. Vibration acceleration test and analysis of large flow high-pressure combustion-heater[J]. 2024, 42(3): 83-91.
刘梦坤, 唐志共, 朱超, 等. 大流量高压燃烧加热器振动加速度测试分析[J]. 空气动力学学报, 2024, 42(3): 83−91. DOI： 10.7638/kqdlxxb-2023.0041

LIU Mengkun, TANG Zhigong, ZHU Chao, et al. Vibration acceleration test and analysis of large flow high-pressure combustion-heater[J]. 2024, 42(3): 83-91. DOI： 10.7638/kqdlxxb-2023.0041.

摘要

针对不同采样频率下（10、20、50、100、200 kHz）大流量高压燃烧加热器振动加速度差异较大的问题进行了研究，开展了冷吹试验、敲击试验、点火试验。采用时域分析法中的均方根、偏度、峭度，频域分析法中的功率谱密度，时频域分析法中的小波变换，并结合模态参数识别中的多参考最小二乘复频域法重点分析了10 kHz和200 kHz采样频率下的振动数据。获得了传感器的安装谐振频率、安装底座和待测设备组合体的固有频率以及加热器运行的主要频段，与声振频率计算公式的结果偏差小于5%。研究结果表明，采用10 kHz的采样频率能够有效表征加热器的振动情况，该方法可为大型复杂燃烧设备振动测试采样频率的选择提供参考。

Abstract

In this study

the differences in vibration acceleration data caused by different sampling frequency (10

100

200 kHz) of the large flow and high pressure combustion-heater were analyzed. And the cold blowing test

knock experiment and ignition test were carried out. Then

the root mean square (RMS)

skewness

kurtosis in the time domain

the power spectral density (PSD) in the frequency domain

the wavelet transform in the time-frequency domain

and the polyreference least squares complex frequency (PolyLSCF) domain method for modal parameter identification were applied to analyze the vibration data at the sampling frequency of 10 kHz and 200 kHz. Finally

the mounting resonant frequency of the sensor

the natural frequency of the mounting base and the facility

as well as the main frequency band in which the heater operates

are obtained and deviate by 5% from the result of the acoustic-structural coupling frequency formula.The results show that the vibration of heaters can be effectively characterized by using a sampling frequency of 10 kHz

and this method can provide a reference for the selection of sampling frequency for vibration testing of large and complex combustion facility.

关键词

Keywords

references

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