High-Temperature Profile Monitoring in Gas Turbine Exhaust-Gas Diffusors with Six-Point Fiber-Optic Sensor Array

被引:18
|
作者
Dutz, Franz J. [1 ]
Boje, Sven [2 ]
Orth, Ulrich [2 ]
Koch, Alexander W. [3 ]
Roths, Johannes [1 ]
机构
[1] Munich Univ Appl Sci, Photon Lab, Lothstr 34, D-80335 Munich, Germany
[2] MAN Energy Solut SE, Steinbrinkstr 1, D-46145 Oberhausen, Germany
[3] Tech Univ Munich, Inst Measurement Syst & Sensor Technol, Theresienstr 90, D-80333 Munich, Germany
关键词
fiber Bragg grating; multipoint; high temperature; regenerated grating; gas turbine; REGENERATED GRATINGS; BRAGG; FIBERS;
D O I
10.3390/ijtpp5040025
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
In this paper, the deployment of a newly developed, multipoint, fiber-optic temperature-sensor system for temperature distribution measurements in a 6 MW gas turbine is demonstrated. The optical sensor fiber was integrated in a stainless steel protection cable with a 1.6 mm outside diameter. It included six measurement points, distributed over a length of 110 mm. The sensor cable was mounted in a temperature probe and was positioned radially in the exhaust-gas diffusor of the turbine. With this temperature probe, the radial temperature profiles in the exhaust-gas diffusor were measured with high spatial and temporal resolution. During a test run of the turbine, characteristic temperature gradients were observed when the machine operated at different loads.
引用
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页数:6
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