Patents by Inventor Nansheng Sun

Nansheng Sun 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: 20240273082
    Abstract: A data-change-driving execution system and a data-change-driving execution method are provided. The data-change-driving execution system of the disclosure includes a storage device and a processor. The processor is configured to capture changing data in a target database, the processor obtains event information corresponding to the changing data according to the data matching rule, and the processor outputs the event information, so that a message server executes a corresponding process according to the event information. In this way, the data-change-driving execution system and the data-change-driving execution method use fewer system resources to timely perceive a target system, and drive the corresponding process according to the changing data.
    Type: Application
    Filed: April 16, 2023
    Publication date: August 15, 2024
    Applicants: Digiwin Software Co., Ltd, DATA SYSTEMS CONSULTING CO., LTD.
    Inventors: Nansheng Liu, Guoxin Sun
  • Publication number: 20080104838
    Abstract: A tube support structure for heat transfer tubes in a steam generator has a plurality of tube support bars which are installed between the heat transfer tubes. At least one of the support bars has a first metal layer and a second metal layer. The first metal layer is preferably spot welded to the second metal layer at intervals. The first metal layer and second metal layer have different thermal expansion coefficients so that at room temperature the support bar is flat, and at the operating temperature of the steam generator the first layer forms a convex shape between the intervals to support the adjacent tube.
    Type: Application
    Filed: December 1, 2005
    Publication date: May 8, 2008
    Inventor: Nansheng Sun
  • Patent number: 6997141
    Abstract: A tube support structure for heat transfer tubes in a steam generator has a plurality of tube support bars which are installed between the heat transfer tubes. At least one of the support bars has a first metal layer and a second metal layer. The first metal layer is preferably spot welded to the second metal layer at intervals. The first metal layer and second metal layer have different thermal expansion coefficients so that at room temperature the support bar is flat, and at the operating temperature of the steam generator the first layer forms a convex shape between the intervals to support the adjacent tube.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: February 14, 2006
    Assignee: Babcox & Wilcox Canada Ltd.
    Inventor: Nansheng Sun
  • Publication number: 20060005787
    Abstract: A tube support structure for heat transfer tubes in a steam generator has a plurality of tube support bars which are installed between the heat transfer tubes. At least one of the support bars has a first metal layer and a second metal layer. The first metal layer is preferably spot welded to the second metal layer at intervals. The first metal layer and second metal layer have different thermal expansion coefficients so that at room temperature the support bar is flat, and at the operating temperature of the steam generator the first layer forms a convex shape between the intervals to support the adjacent tube.
    Type: Application
    Filed: October 28, 2003
    Publication date: January 12, 2006
    Inventor: Nansheng Sun
  • Patent number: 6921090
    Abstract: An improved diaphragm for use with a gasket to prevent leakage of a pressurized fluid. The diaphragm has an internal groove which uses strong spring back and the pressure of the fluid to increase the gasket seating load, thereby providing a self-energizing seal which can accommodate changes in gasket load due to changes in fluid pressure. In one embodiment, a ring is shrink-fit or press-fit about the outer side edge of the diaphragm which improves strength and reduces the material cost.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: July 26, 2005
    Assignee: Babcock & Wilcox Canada Ltd.
    Inventor: Nansheng Sun
  • Patent number: 6708651
    Abstract: An apparatus for supplying relatively cool feedwater to a heated pressure vessel, while moderating the thermal gradients within the apparatus and the pressure vessel. The feedwater apparatus is generally comprised of a feedwater inlet nozzle, thermal sleeve and sparger assembly which is structured to provide a thermal barrier and to lengthen the path of heat conduction through the feedwater inlet nozzle; to insure adequate support for the thermal sleeve and the sparger; to improve feedwater flow through the thermal sleeve and the sparger; and to facilitate the inspection and repair of the welds used to structure the feedwater apparatus.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: March 23, 2004
    Assignee: Babcock & Wilcox Canada Ltd.
    Inventor: Nansheng Sun
  • Patent number: 6672260
    Abstract: An improved support for a tube bundle of a nuclear steam generator has a pair of plates separated by spacers and holding slotted disc springs used to mount tubes through tube holes of the pair of plates. The slotted disc springs deform upon installation and substantially eliminate tube vibration during use, thereby extending the useful life of the tubes. At the same time, the springs limit the pressure drop between sides of the support and enhance the heat transfer from the tubes.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: January 6, 2004
    Assignee: Babcock & Wilcox Canada Ltd.
    Inventor: Nansheng Sun
  • Patent number: 6666637
    Abstract: An internally threaded, segmented nut and conical bore for a pressure vessel are used to make removal of studs securing covers over openings through the pressure vessel wall. The segmented nut has a conical upper surface to mate with a corresponding surface of the conical bore when the stud is threaded through the internal thread of the nut and a load is applied. The segmented nut is easily replaced and the stud is easily removable due to the shape of the nut and bore. The segmented nut eliminates drilling and rethreading the bore to repair damaged threads.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: December 23, 2003
    Assignee: Babcock & Wilcox Canada Ltd.
    Inventor: Nansheng Sun
  • Publication number: 20030201607
    Abstract: An improved diaphragm for use with a gasket to prevent leakage of a pressurized fluid. The diaphragm has an internal groove which uses strong spring back and the pressure of the fluid to increase the gasket seating load, thereby providing a self-energizing seal which can accommodate changes in gasket load due to changes in fluid pressure. In one embodiment, a ring is shrink-fit or press-fit about the outer side edge of the diaphragm which improves strength and reduces the material cost.
    Type: Application
    Filed: April 26, 2002
    Publication date: October 30, 2003
    Inventor: Nansheng Sun