Patents by Inventor Steven Castellaw

Steven Castellaw 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).

  • Method for detecting leaks in a fuel circuit of a gas turbine fuel supply system
    Patent number: 9933327
    Abstract: A method for detecting leakage at a fluid connection for a gas turbine fuel supply system is disclosed herein. The method includes closing a flow control valve at an upstream end of the fuel supply system and pressurizing the fuel supply system with a compressed medium via a compressed medium supply to a target pressure. The target pressure is less than a pressure threshold of a check valve that is disposed downstream from the compressed medium supply and upstream from a corresponding combustor of the gas turbine. The method further includes pointing a receiver portion of an ultrasonic detection device proximate to at least one tube fitting of the fuel supply system located between the flow control valve and a combustor which is fluidly coupled to the fuel supply system. Detection of an increase in sound level and/or the sound of popping at the tube fitting is indicative of a leak at the tube fitting.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: April 3, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Bouria Faqihi, Abdul Khaliq, James Frederik den Outer, Thomas Earnest Moldenhauer, Michael Lynch, Richard Preston Epley, Steven Castellaw, Sheng Jia Zheng
  • Method for Detecting Leaks In A Fuel Circuit of a Gas Turbine Fuel Supply System
    Publication number: 20170052087
    Abstract: A method for detecting leakage at a fluid connection for a gas turbine fuel supply system is disclosed herein. The method includes closing a flow control valve at an upstream end of the fuel supply system and pressurizing the fuel supply system with a compressed medium via a compressed medium supply to a target pressure. The target pressure is less than a pressure threshold of a check valve that is disposed downstream from the compressed medium supply and upstream from a corresponding combustor of the gas turbine. The method further includes pointing a receiver portion of an ultrasonic detection device proximate to at least one tube fitting of the fuel supply system located between the flow control valve and a combustor which is fluidly coupled to the fuel supply system. Detection of an increase in sound level and/or the sound of popping at the tube fitting is indicative of a leak at the tube fitting.
    Type: Application
    Filed: December 14, 2015
    Publication date: February 23, 2017
    Inventors: Bouria Faqihi, Abdul Khaliq, James Frederik den Outer, Thomas Earnest Moldenhauer, Michael Lynch, Richard Preston Epley, Steven Castellaw, Sheng Jia Zheng