Segmented Rotor Casing Liner for Gas Turbine Maintenance
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Solution Overview
Problem
Replacing damaged sections of a rotor casing liner in a power plant, such as a gas turbine engine, is time-consuming as it requires adapting or removing the rotor, which is inefficient.
Innovation Solution
A sectioned rotor casing liner design that allows for easy replacement without adapting the rotor, comprising multiple sections with specific orientations and dimensions that enable removal without altering the rotor's position or configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rotor casing liner is replaced as a single piece, then the structural integrity is maintained, but the replacement time increases and requires rotor adaptation
Solution Approach 1:
The rotor casing liner is divided into multiple replaceable sections that can be individually removed and replaced without adapting the rotor. Each section is designed with fixtures that engage with the rotor casing, allowing selective replacement of damaged sections while maintaining the overall structural integrity of the liner assembly.
2Ease of repair
If the rotor is adapted to remove damaged liner sections, then the liner can be replaced, but the complexity of the procedure increases
Solution Approach 1:
The liner is segmented into standardized sections with matching fixtures that simplify the removal and installation process. Each section can be independently accessed and replaced without requiring complex rotor adaptations, reducing procedural complexity while improving ease of repair.
Solution Approach 2:
The fixtures connecting the liner sections to the rotor casing are designed to allow for dynamic assembly and disassembly. This enables maintenance personnel to easily remove and replace liner sections without permanent modifications to the rotor, balancing ease of repair with minimal procedure complexity.
3Productivity
If the liner sections are made smaller for easier replacement, then replacement efficiency improves, but the number of sections increases
Solution Approach 1:
The liner is divided into an optimal number of sections that balance replacement efficiency with assembly complexity. Each section is sized to allow easy removal and installation while maintaining sufficient structural integrity. The segmentation allows targeted replacement of only damaged portions, improving productivity without excessive increase in the number of components.
Data Source
AI summary
A power plant comprising:a rotor mounted for rotation;a rotor casing; anda rotor casing liner, comprising a plurality of sections, positioned between the rotor and the rotor casing;wherein at least one section of the plurality of sections of the rotor casing liner is sized to enable removal of the at least one section without adapting the rotor.