Weld Part Through-Hole Density for Combustor Cooling
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Solution Overview
Problem
The existing combustor designs face challenges in cooling the vicinity of weld parts effectively, leading to increased manufacturing costs and potential temperature differences that can cause cracks, while also inefficiently allowing compressed air to flow into the combustion chamber.
Innovation Solution
A combustor component with a cylindrical body featuring through holes of higher density in the weld part's first region covered by a housing, which communicates with an acoustic damping space, restricts compressed air inflow into the combustion chamber and suppresses temperature differences, eliminating the need for additional cooling jackets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If through holes are disposed in the weld part to cool the vicinity, then cooling effect is improved, but compressed air flows into the combustion chamber causing efficiency loss
Solution Approach 1:
The patent applies local quality by creating regional differences in through-hole density within the weld part. The first region (near acoustic holes) has higher through-hole density for effective cooling, while the second region has lower density to prevent excessive compressed air inflow. This localized differentiation resolves the contradiction between cooling effectiveness and energy efficiency.
2Temperature
If a refrigerant jacket is added to cover the weld part for cooling, then cooling effect is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the cooling function with the existing acoustic damping structure by integrating through holes directly into the weld part rather than adding a separate refrigerant jacket. This combination eliminates the need for additional cooling components while achieving effective weld part temperature control, thus reducing device complexity.
Solution Approach 2:
The weld part itself is made to perform the cooling function through the incorporation of through holes, allowing compressed air to flow directly through the weld part for self-cooling. This eliminates the need for external cooling systems and simplifies the overall combustor configuration.
3Temperature
If through holes are disposed with high density in the weld part, then cooling effect is improved, but more compressed air flows into the combustion chamber
Solution Approach 1:
The patent implements local quality by spatially differentiating through-hole density: the first region near acoustic damping holes has high density for cooling, while the second region has low density to limit compressed air inflow. This resolves the contradiction between cooling effectiveness and compressed air quantity control.
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 configuration effectively cools the weld part area with a simple setup, reducing manufacturing costs and preventing air inflow into the combustion chamber, thereby enhancing the efficiency and reliability of the gas turbine.
Implementation Method 1
defines an acoustic damping space communicating with the combustion chamber via at least one of the through holes
Implementation Method 2
the plurality of through holes in the weld part has a formation density which is higher in a first region of the weld part covered with the housing than in a second region of the weld part positioned outside the housing
Implementation Method 3
cool the vicinity of the weld part where a temperature is likely to be high
Data Source
AI summary
A combustor component according to at least one embodiment of the present invention includes a cylindrical body which internally includes a combustion chamber, and includes a weld part where a plurality of through holes opening to the combustion chamber are formed, and a housing which is disposed on an outer circumferential side of the cylindrical body to cover a part of the weld part, and defines an acoustic damping space communicating with the combustion chamber via at least one of the through holes. The plurality of through holes in the weld part has a formation density which is higher in a first region of the weld part covered with the housing than in a second region of the weld part positioned outside the housing.