Turbine Rotor Calibration Device for Cooling Anomaly Detection
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Solution Overview
Problem
Current turbomachine cooling systems oversize to account for potential malfunctions, leading to increased specific fuel consumption and engine performance deterioration, and require external intervention for malfunction detection, which can risk further damage.
Innovation Solution
A turbine rotor with a calibration device that changes fluid flow rates based on temperature thresholds, using fusible materials to automatically detect anomalies by increasing fluid flow and triggering blade detachment for engine shutdown without additional sensors or permanent oversizing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cooling devices are oversized to ensure sufficient cooling air flow in case of malfunction, then reliability of cooling is improved, but specific fuel consumption increases and engine performance deteriorates
Solution Approach 1:
The patent applies dynamics by making the cooling air flow adaptive rather than static. The cooling system automatically adjusts the flow rate based on actual cooling needs and system conditions, transitioning from a fixed oversized design to a dynamic regulated system that optimizes performance while ensuring reliability.
Solution Approach 2:
The patent implements feedback through monitoring devices that detect cooling air flow rates and system temperature conditions. This feedback enables automatic adjustment of the cooling air flow to match actual requirements, preventing both over-cooling (waste) and under-cooling (risk), thereby resolving the contradiction between reliability and energy efficiency.
2Reliability
If cooling devices are oversized to account for potential malfunctions, then safety margin is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the cooling system to automatically monitor and adjust its own operation. The system includes self-diagnostic capabilities that detect malfunctions and automatically adjust cooling air flow without requiring external intervention or complex manual control systems, thereby maintaining safety margins while limiting complexity growth.
3Difficulty of detecting and measuring
If external intervention is used for malfunction detection, then detection capability is improved, but risk of further damage increases
Solution Approach 1:
The patent applies preliminary action by implementing continuous monitoring and automatic detection of cooling system malfunctions before they can cause significant damage. The system proactively identifies issues such as blocked air inlets or insufficient cooling air flow and triggers automatic protective actions, eliminating the need for delayed external intervention and reducing damage risk.
Solution Approach 2:
The patent implements feedback through monitoring devices that continuously detect cooling system parameters and provide real-time information about malfunctions. This immediate feedback enables automatic protective actions to be taken without waiting for external intervention, thereby improving detection capability while minimizing the window for potential damage to occur.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces fuel consumption, limits overheating risks, and enables automatic engine shutdown before blade deterioration, improving engine performance and safety by detecting malfunctions without external intervention.
Implementation Method 1
the calibration device comprising a fusible material configured to melt at least in part when the temperature within the circulation channel reaches the predetermined threshold value
Data Source
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AI summary
The invention relates to a rotor for an aircraft turbine engine, comprising at least one mobile disk (63) supporting moving blades (64), the mobile disk (63) comprising a plurality of cells (632), into which feet (642) of the moving blades (64) are inserted, a passage (P) being formed between the bottom of the cells and the feet (642) of the moving blades (64) inserted into said cells (632), the rotor also comprising a circulation channel configured to allow the circulation of a fluid, the circulation channel comprising said passage (P), and a calibration device configured to allow the flow at a first fluid flow rate in the circulation channel when the temperature within the channel is less than a predetermined temperature threshold value, and to change state so as to allow the flow at a second fluid flow rate, which is greater than the first fluid flow rate, in the channel when the temperature within the channel is greater than or equal to said predetermined threshold value.