Patents by Inventor Nanlin ZHANG

Nanlin ZHANG 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).

  • Patent number: 11319789
    Abstract: The present disclosure discloses a rotary downhole cavitation generator, including an upper connector, a lower connector, and a casing. Said casing is internally provided with a transmission shaft, an alignment bearing, a drive assembly, a thrust bearing, a rotating disk, a rectification cylinder, an inner sleeve, and an outer sleeve. Said transmission shaft is provided with a deep hole, a diversion hole radially communicating with said deep hole, and a diversion channel radially communicating with said deep hole. Said alignment bearing and said drive assembly are sleeved on an upper end of said transmission shaft, and said rotating disk, said inner sleeve, and said thrust bearing are sleeved on a lower end of said transmission shaft. Said rectification cylinder and said outer sleeve are mounted on an inner wall of said casing, and said upper connector and said lower connector are respectively connected to both ends of said casing.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: May 3, 2022
    Assignee: SOUTHWEST PETROLEUM UNIVERSITY
    Inventors: Ruyi Gou, Weiyu Chen, Liqiang Zhao, Pingli Liu, Zhifeng Luo, Nanlin Zhang
  • Publication number: 20220010665
    Abstract: The present disclosure discloses a rotary downhole cavitation generator, including an upper connector, a lower connector, and a casing. Said casing is internally provided with a transmission shaft, an alignment bearing, a drive assembly, a thrust bearing, a rotating disk, a rectification cylinder, an inner sleeve, and an outer sleeve. Said transmission shaft is provided with a deep hole, a diversion hole radially communicating with said deep hole, and a diversion channel radially communicating with said deep hole. Said alignment bearing and said drive assembly are sleeved on an upper end of said transmission shaft, and said rotating disk, said inner sleeve, and said thrust bearing are sleeved on a lower end of said transmission shaft. Said rectification cylinder and said outer sleeve are mounted on an inner wall of said casing, and said upper connector and said lower connector are respectively connected to both ends of said casing.
    Type: Application
    Filed: June 28, 2021
    Publication date: January 13, 2022
    Inventors: Ruyi GOU, Weiyu CHEN, Liqiang ZHAO, Pingli LIU, Zhifeng LUO, Nanlin ZHANG