Method and apparatus for distributed cleft and liberated tile detection achieving full coverage of the turbine combustion chamber
A technology for ceramic tiles and signal analyzers, which can be used in combustion methods, combustion equipment, safety devices in combustion chambers, etc., and can solve problems such as machine failure, crack formation, and tile damage.
Inactive Publication Date: 2014-03-19
SIEMENS AG
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However, due to the harsh burning environment, these tiles are sometimes damaged and cracked, or detached from the base metal, which can cause various catastrophic machine failures such as secondary damage, etc.
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[0011] The following discussion of embodiments of the invention relating to sensing systems for monitoring Brillouin backscatter is merely exemplary in nature and is not intended to limit the invention or the application or uses of the invention. In particular, the following discussion relates to the use of sensing systems to detect damage to tiles in a combustor of a gas turbine engine. However, as will be appreciated by those skilled in the art, the sensing system of the present invention will have other applications and other uses.
[0012] figure 1 is a cutaway perspective view of the combustion section 10 of a gas turbine engine of the type discussed briefly above. Combustion section 10 includes an annular combustion chamber 12 receiving a flow of air and a suitable fuel injected into chamber 12 through a series of gas injectors 14 mounted around an outer wall 24 of combustion section 10 . Heated gases generated by combustion of fuel in the chamber 12 are drawn through ...
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Abstract
A component sensing system for monitoring the condition of ceramic tiles in a combustion chamber of a gas turbine engine. The sensing system includes an optical fiber (36) that is mounted to the component being monitored, for example, the ceramic tiles (34) in the gas turbine combustion chamber. The optical fiber can be formed in any suitable orientation or configuration, such as a meandering or serpentine orientation. The fiber is optically coupled to a Brillouin signal analyzer (38) that provides an optical pulse to the sensing section of the fiber and detects Brillouin backscattering from the fiber as the pulse travels along the fiber. The frequency of the Brillouin backscattering signal (44) is monitored relative to the distance along the sensing section of the fiber. A rise in temperature at a location of the fiber shows up in the analyzer as an increase in frequency of the backscattered signal.
Description
technical field [0001] The present invention relates generally to sensor systems for detecting defects in components using Brillouin backscatter, and more particularly to such a sensor system for detecting defects in components, wherein the system includes a sensor system coupled to the component An optical fiber connected to the optical fiber and a Brillouin signal analyzer coupled to the optical fiber, the Brillouin signal analyzer detects the Brillouin inversion at an identifiable position along the optical fiber in response to a change in the measured variable, such as temperature Changes in the frequency of the scattered signal. Background technique [0002] All optical fibers generate backscattered signals in response to light beams propagating through the fiber and interacting with glass fibers or other fiber materials, known as Brillouin backscattering and well known to those skilled in the art. The frequency of the backscatter signal is related to the frequency of ...
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IPC IPC(8): G01K11/32G01M11/08F01D21/00
CPCF23R3/002F23R2900/00019F05D2270/804G01M11/085F01D21/003F23M11/04
Inventor 埃万盖洛斯·V·迪亚特齐基斯汉斯-格尔德·布鲁梅尔迈克尔·特韦尔多赫利布
Owner SIEMENS AG