Patents by Inventor Zhijia LV

Zhijia LV 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).

  • Steam turbine overspeed protection system, and steam turbine
    Patent number: 10989065
    Abstract: Provided is a steam turbine overspeed protection system, includes a drive gear arranged to match a rotation speed of a rotor of a steam turbine; a rotating shaft parallel to an axis of the drive gear and capable of rotating at a critical rotation speed; a protective gear arranged on the rotating shaft and forming a lead screw nut mechanism with the rotating shaft, and arranged to be capable of engaging with the drive gear when the rotation speed of the drive gear exceeds the critical rotation speed; and an operating rod connected to the protective gear; wherein, when the drive gear engages with the protective gear, the protective gear can move in the axial direction of the rotating shaft and thereby drive the operating rod to move and produce an action that activates a protection device for preventing steam turbine overspeed.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: April 27, 2021
    Assignee: CHINA SHENHUA ENERGY COMPANY LIMITED
    Inventors: Shumin Wang, Yanchao Li, Zhijiang Liu, Xing Wei, Wei Wang, Lihua Cao, Zhijia Lv
  • STEAM TURBINE OVERSPEED PROTECTION SYSTEM, AND STEAM TURBINE
    Publication number: 20190257212
    Abstract: Provided is a steam turbine overspeed protection system, includes a drive gear arranged to match a rotation speed of a rotor of a steam turbine; a rotating shaft parallel to an axis of the drive gear and capable of rotating at a critical rotation speed; a protective gear arranged on the rotating shaft and forming a lead screw nut mechanism with the rotating shaft, and arranged to be capable of engaging with the drive gear when the rotation speed of the drive gear exceeds the critical rotation speed; and an operating rod connected to the protective gear; wherein, when the drive gear engages with the protective gear, the protective gear can move in the axial direction of the rotating shaft and thereby drive the operating rod to move and produce an action that activates a protection device for preventing steam turbine overspeed.
    Type: Application
    Filed: October 20, 2017
    Publication date: August 22, 2019
    Inventors: Yanchao LI, Shumin WANG, Zhijiang LIU, Xing WEI, Wei WANG, Zhijia LV, Lihua CAO