Patents by Inventor Xiangxia Liu

Xiangxia Liu 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).

  • Method and device for evaluating aging state of silicone rubber composite insulator
    Patent number: 12247971
    Abstract: A method for evaluating an aging state of a silicone rubber composite insulator includes: step 1: collecting samples from the silicone rubber composite insulator, and subjecting samples in a surface layer and a center layer successively to hydrophobicity, flexing resistance, hardness, color, and absorbance tests; step 2: determining relevant data of the samples in a natural evolution process according to the tests in step 1; step 3: subjecting the samples to thermo-oxidative aging; and after the thermo-oxidative aging is completed, subjecting the samples to a hardness test of artificial accelerated evolution, and calculating position coordinates (F1, F2) of the samples in an aging space; and step 4: classifying the samples in advance and solving an aging state centroid of each classified population, calculating a minimum aging distance based on the position coordinates in step 3, and evaluating the aging state of the silicone rubber composite insulator.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: March 11, 2025
    Assignees: State Grid Hebei Electric Power Co., Ltd. Research Institute, State Grid Corporation of China, State Grid Hebei Energy Technology Service Co., Ltd., HEBEI SILICON VALLEY CHEMICAL CO., LTD., ZIBO QIANHENG AUTOMATION ENGINEERING CO., LTD.
    Inventors: Boyan Jia, Jie Liu, Yanwei Xia, Xianhai Pang, Yuhao Zhao, Shilin Li, Liqiang Song, Xiangxia Liu
  • METHOD AND DEVICE FOR EVALUATING AGING STATE OF SILICONE RUBBER COMPOSITE INSULATOR
    Publication number: 20240192191
    Abstract: A method for evaluating an aging state of a silicone rubber composite insulator includes: step 1: collecting samples from the silicone rubber composite insulator, and subjecting samples in a surface layer and a center layer successively to hydrophobicity, flexing resistance, hardness, color, and absorbance tests; step 2: determining relevant data of the samples in a natural evolution process according to the tests in step 1; step 3: subjecting the samples to thermo-oxidative aging; and after the thermo-oxidative aging is completed, subjecting the samples to a hardness test of artificial accelerated evolution, and calculating position coordinates (F1, F2) of the samples in an aging space; and step 4: classifying the samples in advance and solving an aging state centroid of each classified population, calculating a minimum aging distance based on the position coordinates in step 3, and evaluating the aging state of the silicone rubber composite insulator.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 13, 2024
    Inventors: Boyan Jia, Jie Liu, Yanwei Xia, Xianhai Pang, Yuhao Zhao, Shilin Li, Liqiang Song, Xiangxia Liu