Insulation Mount Assembly for Gas Turbine Exhaust Diffuser
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Solution Overview
Problem
Existing systems for insulating components in exhaust gas flows from gas turbines face challenges due to thermal expansion and contraction, particularly with fixed cover plates that can cause stress and damage.
Innovation Solution
A system and method utilizing an insulation mount assembly with an insulation cover plate and mounting clips that allow movement in one direction while blocking movement in a perpendicular direction, accommodating thermal expansion and contraction without compromising insulation integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed cover plate is used to hold insulation in place, then the insulation is securely mounted, but thermal expansion and contraction cause stress and damage
Solution Approach 1:
The patent replaces the fixed cover plate with a movable mounting system that allows the insulation cover plate to move in the first direction (along the wall surface) while being constrained in the second direction (crosswise to the surface). This dynamic mounting approach enables the insulation assembly to accommodate thermal expansion and contraction of the exhaust diffuser wall without generating excessive stress, thereby resolving the contradiction between secure mounting and thermal stress resistance.
Solution Approach 2:
The patent changes the mounting parameters from a fixed rigid connection to a controlled movable connection. The mounting clips are designed to permit movement in one direction while blocking movement in a perpendicular direction, effectively changing the degrees of freedom of the insulation assembly to match the thermal behavior of the exhaust diffuser wall.
2Adaptability or versatility
If the insulation cover plate is allowed to move freely, then thermal expansion is accommodated, but the insulation position becomes unstable
Solution Approach 1:
The mounting system implements directional freedom of movement: the insulation cover plate can move freely in the first direction (along the wall surface) to accommodate thermal expansion, while the mounting clips constrain movement in the second direction (crosswise to the surface) to maintain position stability. This selective dynamic constraint resolves the contradiction between adaptability to thermal changes and positional stability.
Solution Approach 2:
The patent segments the movement constraints into two independent directional components: freedom of movement in the first direction (along the wall) and constraint in the second direction (crosswise). This segmentation allows the insulation assembly to adapt to thermal expansion while maintaining stable positioning, effectively resolving the contradiction.
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 effectively maintains insulation position against thermal changes, reducing stress and damage while ensuring the insulation remains effective in high-temperature exhaust gas environments.
Implementation Method 1
the welded cover plate can create problems due to thermal expansion and contraction in the exhaust diffuser
Data Source
AI summary
A system may include an insulation mount assembly configured to mount insulation within a component of an exhaust diffuser of a combustion system. The insulation mount assembly includes an insulation cover plate configured to cover the insulation over a wall of the component, and a plurality of mounting clips configured to extend partially over the insulation plate and couple to the wall of the component. Each clip of the plurality of mounting clips is configured to enable movement of the insulation cover plate in a first direction along a surface of the wall and block movement of the insulation cover plate in a second direction crosswise to the surface of the wall.