Patents by Inventor Xianzhi LANG

Xianzhi LANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230408364
    Abstract: The present invention discloses a negative pressure wave monitoring based leak detection method of a multipath pipeline network, including: analyzing a propagation process of a negative pressure wave in a single straight pipeline to obtain a calculated result of a sound velocity in a thin-walled pipe marking the pressure sensors at known disposing positions on a pipeline network map; linearly interpolating position coordinates of key nodes in the pipeline network to extend pipeline network information; resolving the time that a negative pressure wave signal generated by a leak propagates to each disposed RTUs to form a data column; and simulating a leak situation, detecting a pipeline pressure waveform by using the RTUs in a current network, and determining a point corresponding to the data column closest to a measured propagation time delay in the time delay standard library as a leak point, and outputting the position of the leak point.
    Type: Application
    Filed: October 3, 2022
    Publication date: December 21, 2023
    Inventors: Jingtuo SHEN, Chao GAO, Yongfang HE, Peng WANG, Hugejile LIANG, Quan WAN, Xianzhi LANG, Yang YANG, Lingda GAO