Hot spot detection system for vanes or blades of a combustion turbine

Patent · 31 December 1998

OSTI ID:872123

Twerdochlib, Michael ^[1]

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1. Oviedo, FL

This invention includes a detection system that can determine if a turbine component, such as a turbine vane or blade, has exceeded a critical temperature, such as a melting point, along any point along the entire surface of the vane or blade. This system can be employed in a conventional combustion turbine having a compressor, a combustor and a turbine section. Included within this system is a chemical coating disposed along the entire interior surface of a vane or blade and a closed loop cooling system that circulates a coolant through the interior of the vane or blade. If the temperature of the vane or blade exceeds a critical temperature, the chemical coating will be expelled from the vane or blade into the coolant. Since while traversing the closed loop cooling system the coolant passes through a detector, the presence of the chemical coating in the coolant will be sensed by the system. If the chemical coating is detected, this indicates that the vane or blade has exceeded a critical temperature.

• Research Organization: Westinghouse Electric Corp
• DOE Contract Number: FC21-95MC32267
• Assignee: Siemens Westinghouse Power Corporation (Orlando, FL)
• Patent Number(s): US 5865598
• OSTI ID: 872123
• Country of Publication: United States
• Language: English

Related Subjects

/415/73/
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chemical
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circulates
closed
closed loop
coating
combustion
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combustor
component
compressor
conventional
coolant
cooling
critical
critical temperature
detected
detection
detector
determine
disposed
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entire
entire interior
entire surface
exceeded
exceeds
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hot
hot spot
included
indicates
interior
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loop
loop cooling
melting
passes
presence
section
sensed
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surface
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traversing
turbine
turbine component
turbine section
turbine vane
vane
vanes