US 11,656,152 B2
Inspecting and diagnosing device for gas turbine combustor
Jung Sub Lim, Chungcheongnam-do (KR)
Assigned to KOREA WESTERN POWER CO., LTD., Chungcheongnam-Do (KR)
Filed by KOREA WESTERN POWER CO., LTD., Chungcheongnam-do (KR)
Filed on Apr. 12, 2020, as Appl. No. 16/846,361.
Claims priority of application No. 10-2019-0129216 (KR), filed on Oct. 17, 2019.
Prior Publication US 2021/0140852 A1, May 13, 2021
Int. Cl. G01M 15/14 (2006.01)
CPC G01M 15/14 (2013.01) 20 Claims
OG exemplary drawing
 
1. An inspecting and diagnosing apparatus for determining inspection locations of a plurality of combustors in a gas turbine, the inspecting and diagnosing apparatus comprising:
a plurality of temperature sensors located to measure temperature at each of plural gas turbine exhaust gas discharge locations in the gas turbine; and
an inspecting and diagnosing device operatively coupled to receive temperature data from the temperature sensors and that executes an inspection and diagnosis program that calculates a function value for each of the combustors of the gas turbine using a combustion gas flow location temperature index (X), an average combustion gas flow temperature index (Y), a gas turbine swirl angle index (Z), and a gas turbine power output index (MW);
wherein the average combustion gas flow temperature index is measured as an average exhaust gas temperature value of the exhaust gas discharged from a plurality of combustors, and the average combustion gas flow temperature value is a representative value for temperatures differing in a constant range for the respective combustors and means an average thermal distribution of the respective combustors;
wherein the function values each are based on a difference between the combustion gas flow location temperature index (X) and the average combustion gas flow temperature index (Y), and scaled by the gas turbine swirl angle index (Z);
wherein the inspection and diagnosis program automatically determines that an inspection is required for each combustor that has a function value greater than a gas turbine power output and that no inspection is required for each combustor that has a function value less than the gas turbine power output; and
wherein the inspection and diagnosis program automatically determines an inspection location of the gas turbine upon automatically determining that an inspection is required.