中国机械工程 ›› 2025, Vol. 36 ›› Issue (9): 1961-1967.DOI: 10.3969/j.issn.1004-132X.2025.09.007

• 机械基础工程 • 上一篇    

基于电液类比原理的水导激光水压脉动衰减器滤波特性

孟朝中1(), 杨帆1(), 余家欣1, 王宇强2   

  1. 1.西南科技大学制造科学与工程学院, 绵阳, 621010
    2.中国民用航空总局第二研究所, 成都, 610041
  • 收稿日期:2024-06-18 出版日期:2025-09-25 发布日期:2025-10-15
  • 通讯作者: 杨帆
  • 作者简介:孟朝中,男,2001年生,硕士研究生。研究方向为脉动衰减声学理论与设计。E-mail:chaozhongmeng554@163.com
  • 基金资助:
    四川省科技计划(2023NSFSC0860);四川省科技厅自然科学基金创新研究群体项目(24NSFTD0019);教育部产学合作协同育人项目(22107118134157);西南科技大学研究生创新基金(25ycx2046)

Filtering Characteristics of WJGL Pulsation Attenuator Based on Electro-Hydraulic Analogy Principles

Chaozhong MENG1(), Fan YANG1(), Jiaxin YU1, Yuqiang WANG2   

  1. 1.School of Manufacturing Science and Engineering,Southwest University of Science and Technology,Mianyang,Sichuan,621010
    2.The Second Research Institute of CAAC,Chengdu,610041
  • Received:2024-06-18 Online:2025-09-25 Published:2025-10-15
  • Contact: Fan YANG

摘要:

供液系统低频压力脉动(0~500 Hz)导致的水束不稳定是水导激光(WJGL)中急需解决的问题。设计了一种利用柔性衬里耦合振动及Herschel-Quincke 管(HQ管)反相位相消原理实现双重滤波的水压脉动衰减器。采用一维解析法及电液类比原理建立传递矩阵模型,通过试验验证理论建模的可行性。通过仿真定量分析了HQ管结构参数、内插管长度、衬里弹性模量等关键参数对低频脉动抑制效果的影响机制。结果表明,聚氨酯衬里的减振能力随着其弹性模量的减小而增强,损耗角对传递损失具有负面影响;在一定条件下改变内插管长度对传递损失影响不大,而增大HQ管的长度和减小管径可以增强衰减效果。

关键词: 水导激光供液系统, 低频压力脉动, 电液类比法, 传递矩阵声学模型

Abstract:

In WJGL, the instability in water jet from low-frequency pressure pulsations (0~500 Hz) in fluid supply systems needed urgent resolution. A water pressure pulsation attenuator was designed using flexible liners for coupling vibrations and Herschel-Quincke tubes (HQ tubes) for phase cancellation, achieving dual filtering. A transfer matrix model was established based on one-dimensional analytical approach and electro-hydraulic analogy principle, and the feasibility was experimentally verified through prototype testing. The influence mechanism of key parameters, such as HQ tube structures, insert tube lengths, and liner elastic modulus on low-frequency pulsation attenuation were quantitative analyzed in simulations. The results show that the damping performance of polyurethane liners improves as their elastic modulus decreases, while the loss angle negatively affects transmission loss. Under certain conditions, changing the insert tube lengths has minimal impact on transmission loss(TL), but increasing the HQ tube lengths and reducing the diameter enhances attenuation.

Key words: water jet guided laser(WJGL) fluid supplying system, low frequency pressure pulsation, electro-hydraulic analogy method, transfer matrix acoustic model

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