Patents by Inventor Srinivasarao Pakkala

Srinivasarao Pakkala 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: 9664118
    Abstract: A system for controlling compressor forward leakage to the compressor flow path in a gas turbine is provided. The system includes a first compressor rotor wheel coupled to an upstream face of a compressor spacer wheel. A second compressor rotor wheel is coupled to a downstream face of the compressor spacer wheel. The compressor spacer wheel includes at least one intake recess defined in the downstream face, at least one discharge recess defined in the upstream face, and at least one axial passage coupling the at least one intake recess in fluid communication with the at least one discharge recess.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: May 30, 2017
    Assignee: General Electric Company
    Inventors: Jagdish Prasad Tyagi, Srinivasarao Pakkala
  • Patent number: 9546567
    Abstract: A system is provided including a turbine exhaust section. The turbine exhaust section includes an exhaust flow path. The turbine exhaust section also includes an outer structure having an outer casing, an outer exhaust wall disposed along the exhaust flow path, and an outer cavity disposed between the outer exhaust wall and the outer casing. The turbine exhaust section further includes an inner structure having an inner exhaust wall disposed along the exhaust flow path, an inner cavity disposed between the inner exhaust wall and an inner casing, and a bearing cavity disposed between the inner casing and a bearing housing. In addition, the turbine exhaust section includes a strut extending between the outer structure and the inner structure. The strut includes a first flow passage configured to flow a fluid from the inner cavity to the outer cavity.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: January 17, 2017
    Assignee: General Electric Company
    Inventors: Ravi Shankar Venkata Kasibhotla, Piotr Edward Kobek, Srinivasarao Pakkala, Radu Ioan Danescu, David Martin Johnson
  • Patent number: 9422864
    Abstract: A gas turbine exhaust frame includes an inner barrel and an outer barrel establishing an annular exhaust gas flow path therebetween. A plurality of airfoils extend radially between the inner barrel and the radially, outer barrel, the plurality of struts arranged in first and second axially-spaced and circumferentially-staggered rows.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: August 23, 2016
    Assignee: General Electric Company
    Inventors: Kunal Upendra Sakekar, Moorthi Subramaniyan, Srinivasarao Pakkala
  • Publication number: 20150114000
    Abstract: A system for controlling compressor forward leakage to the compressor flow path in a gas turbine is provided. The system includes a first compressor rotor wheel coupled to an upstream face of a compressor spacer wheel. A second compressor rotor wheel is coupled to a downstream face of the compressor spacer wheel. The compressor spacer wheel includes at least one intake recess defined in the downstream face, at least one discharge recess defined in the upstream face, and at least one axial passage coupling the at least one intake recess in fluid communication with the at least one discharge recess.
    Type: Application
    Filed: October 24, 2013
    Publication date: April 30, 2015
    Applicant: General Electric Company
    Inventors: Jagdish Prasad Tyagi, Srinivasarao Pakkala
  • Patent number: 8979477
    Abstract: A system is provided with a turbine exhaust strut configured to provide a bi-directional airflow. The turbine exhaust strut includes a first portion having a first flow passage configured to flow a fluid in a first direction between inner and outer exhaust walls of a turbine exhaust section, and a second portion having a second flow passage configured to flow the fluid in a second direction between the inner and outer exhaust walls of the turbine exhaust section. Furthermore, the first and second directions are opposite from one another.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: March 17, 2015
    Assignee: General Electric Company
    Inventors: David Martin Johnson, Radu Ioan Danescu, Srinivasarao Pakkala, Piotr Edward Kobek
  • Publication number: 20140178187
    Abstract: A gas turbine exhaust frame includes an inner barrel and an outer barrel establishing an annular exhaust gas flow path therebetween. A plurality of airfoils extend radially between the inner barrel and the radially, outer barrel, the plurality of struts arranged in first and second axially-spaced and circumferentially-staggered rows.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kunal Upendra SAKEKAR, Moorthi SUBRAMANIYAN, Srinivasarao PAKKALA
  • Publication number: 20130300067
    Abstract: A system for sealing a gas path in a turbine includes a brush holder and a support connected to the brush holder and extending away from the brush holder. The support has an upstream side and a downstream side. A plurality of upstream bristles is connected to the brush holder along the upstream side of the support, and a plurality of downstream bristles is connected to the brush holder along the downstream side of the support. The upstream and downstream bristles have terminal ends that extend away from the brush holder.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 14, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kunal Upendra Sakekar, Bhaskar Ram, Srinivasarao Pakkala, Shaik Karimulla Sha
  • Publication number: 20120227371
    Abstract: A system is provided with a turbine exhaust strut configured to provide a bi-directional airflow. The turbine exhaust strut includes a first portion having a first flow passage configured to flow a fluid in a first direction between inner and outer exhaust walls of a turbine exhaust section, and a second portion having a second flow passage configured to flow the fluid in a second direction between the inner and outer exhaust walls of the turbine exhaust section. Furthermore, the first and second directions are opposite from one another.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 13, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: David Martin Johnson, Radu Ioan Danescu, Srinivasarao Pakkala, Piotr Edward Kobek