Gas Turbine Fuel Manifold Brazed Segments
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Solution Overview
Problem
The manufacturing of fuel supply systems for gas turbine engines is complex and heavy due to the assembly of multiple segments and tubes, which complicates the assembly process and increases weight.
Innovation Solution
A fuel supply manifold assembly comprising first and second manifold segments with double-barrel fittings and straight tubes, where the segments are brazed together to form primary and secondary fuel circuits, reducing the number of parts and simplifying assembly by using a method that includes assembling double-barrel fittings with straight tubes and brazing them to form a 180-degree arc.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple fuel supply manifolds are assembled from formed tubes that are sequentially cut, measured, assembled and welded, then the fuel supply system can be customized to fit specific combustor configurations, but the manufacturing process becomes complex and time-consuming
Solution Approach 1:
The fuel supply manifold is divided into multiple modular segments that can be independently manufactured and then assembled together. Each segment contains standardized fittings and connection points, allowing the system to be configured for different combustor arrangements while simplifying individual segment manufacturing.
Solution Approach 2:
The manifold segments are designed with universal connection interfaces and standardized double-barrel fittings that can accommodate various fuel injector configurations. This universality allows the same basic segment design to be used across different engine types, reducing manufacturing complexity while maintaining adaptability.
2Adaptability or versatility
If fuel supply manifolds are manufactured in multiple segments for primary and secondary circuits, then the system can accommodate complex fuel distribution requirements, but the assembly process to the combustor section becomes complicated
Solution Approach 1:
The manifold is segmented into primary and secondary circuit sections with standardized interfaces. Each segment can be pre-assembled and tested independently, then quickly connected to the combustor using uniform connection procedures, simplifying the overall assembly process.
Solution Approach 2:
Multiple fuel circuit functions are integrated into unified manifold segments that handle both primary and secondary fuel distribution. The double-barrel fittings combine multiple fuel lines at standardized connection points, reducing the number of separate assembly operations required.
3Adaptability or versatility
If traditional fuel supply systems are assembled from multiple formed tubes with sequential cutting, measuring and welding, then the system can be customized, but the final assembly is heavy in weight
Solution Approach 1:
By segmenting the manifold into modular sections with standardized fittings, material can be optimized for each segment rather than using excessive material throughout. This reduces overall weight while maintaining customization capability through selective segment configuration.
Solution Approach 2:
The manifold segments utilize optimized wall thicknesses and material selections based on specific pressure and flow requirements of different circuit sections. This parameter optimization reduces material usage and weight while maintaining structural integrity and fuel distribution performance.
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 design simplifies the assembly process, reduces manufacturing time, and decreases costs by using common fittings and straight tubes, resulting in a lighter and less complicated fuel supply system for gas turbine engines.
Implementation Method 1
The multiple of straight tubes are brazed between each two of the first multiple of double-barrel fittings and each two of the second multiple of double-barrel fittings.
Data Source
AI summary
A fuel supply manifold for a gas turbine engine includes a first manifold segment includes a first multiple of double-barrel fittings in communication with a primary fuel circuit and a secondary fuel circuit. A second manifold segment includes a second multiple of double-barrel fittings in communication with the primary fuel circuit and the secondary fuel circuit. The first manifold segment is connected to the second manifold segment.