Turbine Vane Platform Cooling Chamber Design
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Solution Overview
Problem
Turbine engine components face thermal stress due to high-temperature hot gases, and existing cooling systems are inadequate in effectively managing this stress, particularly in directing cooling air to efficiently counteract temperature differences across the vane platforms.
Innovation Solution
A stator system with a ducting plate coupled to the vane platform forms a cooling chamber that directs cooling air from the leading edge to the trailing edge, accelerating it through a single inlet and outlet configuration to enhance heat transfer and reduce thermal stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cooling air is supplied to the vane platform, then thermal stress is reduced, but the cooling air flow distribution is inadequate to effectively counteract temperature differences across the platform
Solution Approach 1:
The ducting plate is divided into multiple segments (first ducting plate, second ducting plate, third ducting plate) that create separate cooling chambers. Each chamber receives cooling air through dedicated inlets and directs it to specific regions of the vane platform, enabling localized cooling control and improving overall cooling efficiency by addressing temperature differences in different zones.
2Device complexity
If a single inlet configuration is used in the ducting plate, then device complexity is reduced, but the ability to distribute cooling air effectively across the vane platform is limited
Solution Approach 1:
The ducting plate structure extends in the spanwise direction (across the width of the vane platform) to create multiple cooling chambers. This dimensional extension allows a single inlet configuration to serve multiple cooling zones by distributing cooling air through the spanwise extent of the ducting plate, achieving effective cooling distribution without increasing inlet complexity.
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
The system effectively reduces thermal stress on turbine components by accelerating cooling air through the chamber, increasing heat transfer and maintaining a lower operating temperature across the vane platforms, thereby improving the durability and efficiency of the turbine engine.
Implementation Method 1
The ducting plate may be configured to accelerate the cooling air from the inlet to the outlet
Implementation Method 2
increasing heat transfer and maintaining a lower operating temperature across the vane platforms
Data Source
AI summary
The present disclosure relates to cooling systems for turbine stators. A stator may include a vane platform. A ducting plate may be coupled to the vane platform. The ducting plate and the vane platform may form a cooling chamber between the ducting plate and the vane platform. The ducting plate may include an inlet adjacent to a leading edge of the vane platform. The vane platform may include an outlet adjacent to a trailing edge of the vane platform. The ducting plate may be configured to channel cooling air through the cooling chamber from the leading edge to the trailing edge.