Continuous Cooling Channel in Gas Turbine Transition Duct
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Solution Overview
Problem
The existing cooling features in gas turbine transition ducts are time-consuming and costly to implement, with separate cooling features for the transition duct panels, exit frames, and connections, which are inefficient and require multiple manufacturing processes.
Innovation Solution
A continuous exit section cooling channel is formed by connecting a transition duct panel channel with an exit frame channel through a connection, allowing for efficient cooling of both the transition duct panel and exit frame using a single fluid flow, eliminating the need for separate effusion holes and reducing material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate cooling features are employed for transition duct panels, welds, and exit frames, then each component can be cooled independently, but the manufacturing time increases and costs increase
Solution Approach 1:
The patent merges separate cooling features into a single continuous cooling channel that extends through the transition duct panel, through the weld, and through the exit frame. This integration allows cooling fluid to flow continuously through all components, providing effective cooling while reducing manufacturing steps and time compared to creating separate cooling features for each component.
2Reliability
If separate cooling features are employed for transition duct panels, welds, and exit frames, then each component can be cooled independently, but the overall cost of the gas turbine component increases
Solution Approach 1:
The continuous cooling channel integrates cooling functionality across multiple components (transition duct panel, weld, exit frame) into a single manufactured feature. This reduces the number of manufacturing operations, tooling requirements, and assembly steps, thereby lowering overall manufacturing cost while maintaining effective cooling of all components.
3Reliability
If multiple separate cooling features are implemented, then comprehensive cooling coverage is achieved, but the complexity of implementation increases
Solution Approach 1:
The patent combines multiple separate cooling features into one continuous cooling channel that provides comprehensive cooling coverage across the transition duct panel, weld, and exit frame. This single integrated channel simplifies the cooling system design, reduces the number of separate cooling circuits needed, and lowers implementation complexity while maintaining thorough cooling coverage.
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 manufacturing time and costs, enhances cooling efficiency, and simplifies the cooling process by using a single continuous channel for both the transition duct panel and exit frame, while minimizing material usage and potential emissions.
Implementation Method 1
A continuous exit section cooling channel is formed in the transition duct panel through the connection and further through the exit frame to an outlet located on a face of the exit frame
Implementation Method 2
A continuous exit section cooling channel is formed in the transition duct panel through the connection and further through the exit frame
Data Source
AI summary
A gas engine turbine has a transition duct (100) that has improved cooling features and a method for forming the cooling features. A continuous exit section cooling channel (130) is formed through the transition duct panel (112), the exit frame (114) and the connection (116). The continuous exit section cooling channel (130) reduces the need for effusion channels in the transition duct. The continuous exit section cooling channel (130) further reduces costs and improves the emissions associated with the transition duct (100) of the gas engine turbine.