Segmented Manifold Fluid Distribution for HRSG Thermal Stress
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Solution Overview
Problem
Heat recovery steam generator (HRSG) systems face increased component wear and reduced lifespan due to thermal stress from high cycling systems, leading to higher costs and potential replacement of the output manifold.
Innovation Solution
A system with a fluid delivery line connected to a plurality of collection lines via tee members, allowing for efficient aggregation and distribution of heated fluids to downstream components, reducing thermal stress and wear on components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single fluid delivery line is used to receive fluids from header lines, then the output capacity and downstream steam turbine needs are met, but the diameter, thickness, and material requirements increase both initial and replacement costs
Solution Approach 1:
The patent divides the single fluid delivery line into multiple smaller delivery lines, each serving specific header lines. This segmentation allows each line to be sized appropriately for its specific flow requirements rather than requiring one oversized line to handle all flows, reducing material requirements and costs while maintaining total output capacity.
2Device complexity
If a single fluid delivery line is used, then the system structure is simple, but the entire manifold must be replaced in the event of wear or failure
Solution Approach 1:
By segmenting the fluid delivery system into multiple lines with individual connections to header lines, the patent enables selective replacement of only the worn or failed line rather than requiring replacement of the entire manifold system, significantly improving ease of repair.
3Productivity
If high cycling systems are used, then productivity and response time are improved, but thermal stress increases component wear and decreases the life of the output manifold
Solution Approach 1:
The segmented multi-line configuration distributes thermal and mechanical stresses across multiple separate lines rather than concentrating them in a single line. This segmentation reduces the thermal stress impact on any individual component, thereby decreasing wear and extending the lifespan of the output manifold system while maintaining high cycling capability.
Data Source
AI summary
A system for aggregating a working fluid includes a fluid delivery line defining a fluid connection to at least one downstream process component; a plurality of collection lines each fluidically connected to a plurality of header lines by a respective set of header links; and a connecting junction fluidically connecting each of the plurality of collection lines to the fluid delivery line, the connecting junction including: at least one tee member oriented substantially perpendicularly with respect to the fluid delivery line, the at least one tee member connected to the fluid delivery line, and a plurality of branch fluid lines each fluidically coupling a respective one of the plurality of collection lines to the at least one tee member.