Segmented Flow Guide Member for Gas Turbine Combustor Air Distribution
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Solution Overview
Problem
The existing gas turbine combustors face challenges with non-uniform air distribution due to strong swirls created by abrupt changes in air flow direction, leading to pressure loss and reduced efficiency.
Innovation Solution
A combustor design incorporating a flow guide member with multiple guide segments in a circular annulus shape, divided in a circumferential direction, to uniformly distribute compressed air into the burner, featuring guide vanes, support plates, and a fixing block for stable installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If guide vanes are installed to distribute air uniformly, then air distribution uniformity is improved, but device complexity increases making manufacturing and installation difficult
Solution Approach 1:
The flow guide member is divided into multiple guide segments (first guide segment, second guide segment, third guide segment, fourth guide segment) arranged in sequence around the burner. Each segment contains guide vanes that can be independently manufactured and assembled, reducing overall device complexity while maintaining uniform air distribution capability
Solution Approach 2:
The guide vanes are arranged in a circumferential direction around the burner, utilizing the radial-dimension to achieve uniform air distribution. This circumferential arrangement allows each guide segment to contribute to overall uniformity without requiring complex three-dimensional structures
2Manufacturing precision
If a single integrated flow guide member is used, then manufacturing precision is improved, but ease of manufacture deteriorates due to difficulty in manufacturing and installation
Solution Approach 1:
The flow guide member is segmented into multiple independent guide segments that can be manufactured separately using standard manufacturing processes, then assembled around the burner. This segmentation maintains manufacturing precision through modular design while significantly improving ease of manufacture and installation
Solution Approach 2:
The guide segments are designed to be arranged circumferentially around the burner in a nested configuration, with each segment fitting into position around the central burner assembly. This nesting approach allows precise positioning while simplifying the manufacturing of individual segments
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 solution facilitates easier manufacturing and installation of the combustor components while enhancing combustion efficiency through uniform air distribution, reducing pressure loss and improving overall gas turbine performance.
Implementation Method 1
at least one guide vane extending in a circumferential direction between the pair of support plates... guide a flow of air into the plurality of nozzles
Data Source
AI summary
A combustor includes a nozzle casing having a tubular shape, a head plate coupled to an end of the nozzle casing, a burner having a plurality of nozzles through which fuel and air are injected, and a duct assembly coupled to one side of the burner to allow the fuel to be combusted therein and combustion gases to be transferred to a turbine, wherein the burner further includes a flow guide member in a circular annulus shape installed between the plurality of nozzles and the nozzle casing to guide a flow of air into the plurality of nozzles, wherein the flow guide member includes a plurality of guide segments into which the flow guide member is divided.