Search International and National Patent Collections

1. (WO2018041846) ADVANCED TIGHTNESS TEST EVALUATION MODULE FOR A VALVE AND ACTUATOR MONITORING SYSTEM

Pub. No.:    WO/2018/041846    International Application No.:    PCT/EP2017/071682
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Wed Aug 30 01:59:59 CEST 2017
IPC: G01M 3/28
G01M 15/14
Applicants: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventors: REIGL, Martin
MAECKLE, Frank
Title: ADVANCED TIGHTNESS TEST EVALUATION MODULE FOR A VALVE AND ACTUATOR MONITORING SYSTEM
Abstract:
The present application provides a method of evaluating valve tightness in a turbine (100) by a data acquisition system (710). The method may include the steps of receiving a number of operating parameters from a number of sensors (380), opening a first valve (270) and closing a second valve (280), closing the first valve (270), determining a pressure decay time between the first valve (270) and the second valve (280), determining a stable value of pressure between the first valve (270) and the second valve (280), comparing the pressure decay time and the stable value of pressure to predetermined values, and altering one or more of the operating parameters and/or initiating repair procedures if the pressure decay time and/or the stable value of pressure is increasing and/or exceeds the predetermined values.