Research on online measurement method of corrugated plate depth of plate heat exchanger

被引：0
|
作者：
Li F. [1 ,2 ]
Zhang P. [1 ,2 ]
Yuan W. [1 ,2 ]
机构：
[1] Computer Vision Group, Shenyang University of Technology, Shenyang
[2] Key Laboratory of Machine Vision, Liaoning Province, Shenyang
来源：
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | 2020年 / 41卷 / 02期
关键词：
Corrugation depth; Laser displacement sensor; Moment; Multi-thread; Non-contact measurement; Plate heat exchanger corrugated plate;
D O I：
10.19650/j.cnki.cjsi.J1905847
中图分类号：
学科分类号：
摘要：
At present, the detection method of corrugated plate depth of plate heat exchanger is mainly manual detection, this detection method can hardly guarantee its detection result. Through comparing with traditional contact probe measurement, this paper studies and designs a set of non-contact measurement method based on laser displacement sensor. According to different corrugated plate structures, the optimal acquisition path is studied and designed, the adaptive iterative median filtering algorithm is used to reduce the noise of the collected data. The de-noised data is transformed into visual image area and grayscale image to extract the detection area intuitively and efficiently. The least square method is used to fit the corrugated plate gasket groove area, and the moment in statistics is used to calculate the corrugation depth parameter and judge the corrugated plate quality. Multi-thread design is adopted in the software, which solves the problem of mutual interference between data acquisition and data processing, and improves the detection speed. A large number of field tests show that the average detection time of single point algorithm is 40.932 6 s. Through comparing the detection value with the design value, the detection accuracy of wide corrugated plate is 99.3%, and that of the narrow corrugated plate is 94.5%. This design provides an automatic method for the detection of corrugated plate depth of plate heat exchanger, which is superior to manual detection in detection speed and detection result, can quickly and effectively detect the depth value of corrugated plate and has a certain practical value. © 2020, Science Press. All right reserved.
引用
收藏
页码：115 / 125
页数：10
相关论文
共 22 条
  • [1] Wen Y., Zhang J., Zhao L., Et al., Numerical simulation of new combined plate heat exchangers and distribution region, Journal of Mechanical Engineering, 52, 2, pp. 150-156, (2016)
  • [2] Zhang Z.B., Zhang H., Liu Y., Et al., Numerical simulation and field synergy principle analysis on the characteristic for new distribution region of plate heat exchanger, Journal of Mechanical Engineering, 53, 6, pp. 145-151, (2017)
  • [3] Li M.C., Xiao G., Shi H.C., Et al., Study on phase change flow and heat transfer characteristics of chevron corrugated plate, Journal of Engineering Thermophysics, 37, 3, pp. 581-585, (2016)
  • [4] Yang L., Analysis on the causes of stamping cracking of TA1 pure titanium cold rolled sheet, Journal of Plasticity Engineering, 25, 2, pp. 73-78, (2018)
  • [5] Chakravarty A., Goyal M., Chakravarty A., Et al., Numerical and experimental investigations of transient behaviour of compact plate fin heat exchanger, IOP Conference Series: Materials Science and Engineering, 171, 1, (2017)
  • [6] Dong Z.X., Sun X.W., Liu W.J., Et al., Precision measurement method of free-form curved surfaces based on laser displacement sensor, Chinese Journal of Scientific Instrument, 39, 12, pp. 30-38, (2018)
  • [7] Li B., Sun B., Chen L., Et al., Application of laser displacement sensor to free-from surface measurement, Optics and Precision Engineering, 23, 7, pp. 1939-1947, (2015)
  • [8] Vukasinovic N., Mozina J., Duhovnik J., Correlation between incident angle, measurement distance, object colour and the number of acquired points at CNC laser scanning, Journal of Mechanical Engineering, 58, 1, pp. 23-28, (2012)
  • [9] Sun B., Li B., A quantitative error compensation model of the inclination angle of the laser displacement sensor, Chinese Journal of Scientific Instrument, 36, 5, pp. 996-1004, (2015)
  • [10] Xie Z.X., Zhang H.J., Zhang G.X., Factors affecting the measurement precision of laser triangular prob and the compensation methods, Advanced Measurement and Laboratory Management, 1, pp. 23-26, (1999)
123