Patents by Inventor Grant L. Powers

Grant L. Powers 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).

  • GAS TURBINE TRANSITION DUCT WITH LATE LEAN INJECTION HAVING REDUCED COMBUSTION RESIDENCE TIME
    Publication number: 20180187563
    Abstract: An improved combustion system having a reduced combustion residence time in a combustion turbine engine is provided. The combustor system may include a flow-accelerating structure (16, 51) having an inlet (26) and an outlet (28). The inlet of the flow-accelerating structure is fluidly coupled to receive a flow of combustion gases from a combustor outlet. At least one fuel injector (32, 64, 66) is disposed between the inlet and the outlet of the flow-accelerating structure. The flow-accelerating structure causes an increasing speed to the flow of combustion gases, and, as a result, the flow of combustion gases in the flow-accelerating structure experiences a decreased static temperature and a reduced combustion residence time, each of which is effective to reduce NOx emissions at the high firing temperatures of the turbine engine.
    Type: Application
    Filed: July 24, 2015
    Publication date: July 5, 2018
    Applicant: Siemens Aktiengesellschaft
    Inventors: Walter Ray Laster, Juan Enrique Portillo Bilbao, Timothy A. Fox, Grant L. Powers