RESEARCH ON ULTRASONIC GUIDED WAVES IN FOULING PIPES VIBRATION CHARACTERISTICS BASED ON SIMULATION ANSYS

SUN LingFang; WU ChunYing; PIAO Heng

doi:10.16579/j.issn.1001.9669.2018.02.007

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RESEARCH ON ULTRASONIC GUIDED WAVES IN FOULING PIPES VIBRATION CHARACTERISTICS BASED ON SIMULATION ANSYS

更新时间：2022-09-22

- RESEARCH ON ULTRASONIC GUIDED WAVES IN FOULING PIPES VIBRATION CHARACTERISTICS BASED ON SIMULATION ANSYS
- Journal of Mechanical Strength Vol. 40, Issue 2, Pages: 293-298(2018)
- 作者机构：
  
  1. 东北电力大学自动化工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.02.007
  CLC：
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SUN LingFang, WU ChunYing, PIAO Heng. RESEARCH ON ULTRASONIC GUIDED WAVES IN FOULING PIPES VIBRATION CHARACTERISTICS BASED ON SIMULATION ANSYS. [J]. 40(2):293-298(2018)
DOI：

SUN LingFang, WU ChunYing, PIAO Heng. RESEARCH ON ULTRASONIC GUIDED WAVES IN FOULING PIPES VIBRATION CHARACTERISTICS BASED ON SIMULATION ANSYS. [J]. 40(2):293-298(2018) DOI： 10.16579/j.issn.1001.9669.2018.02.007.

摘要

由于污垢在换热设备内积聚对设备的安全、经济运行产生了极大的影响,对换热设备产生的污垢快速、准确的检测尤为重要。利用Ansys有限元仿真软件分别建立空管道及污垢管道模型,研究超声导波在管道中传播的振动特性及波源对污垢检测的影响。研究得到了管道污垢超声检测的最佳激发频率及周期。与污垢管道实验研究相比较,结果表明:中心频率为1 MHz,周期为10的激励信号激发的L(0,3)模态导波适于外直径25 mm,壁厚3 mm的304钢管污垢检测。检测结果与数值模拟结果基本吻合,仿真所得到的导波模态及最佳激发频率可直接应用于实际检测中,研究结果为实现管道污垢厚度检测奠定基础。

Abstract

Since the fouling accumulation in the heat exchanger equipment has produced great effect for safe and economical operation,it is particularly important to detect the fouling produced in heat exchanger equipment accurately and rapidly. Ansys finite element simulation software was used to establish the model of hollow and fouling pipelines. Research on the vibration characteristics of ultrasonic guided waves propagate in pipes and the influence of different sources for fouling detection. The optimum excitation frequency and period was obtained for fouling ultrasonic detection in pipes. After compared with the experimental studies,the results indicate that L（ 0,3） mode guided waves motivated by excitation signal with the 1 MHz central frequency and the 10 period signal is adapted to the fouling detection for 304 steel of outside diameter 25 mm and wall thickness 3 mm. The experiment results are in agreement with the numerical results. The guided wave mode and the optimal excitation frequency can be directly applied to the actual detection. The research results lay the foundation for the measurement realization of the fouling thickness in pipes.

关键词

超声导波有限元分析污垢管道检测

Keywords

Ultrasonic guided wavesFinite element analysisDetection of fouling in pipes

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