Spherical-Link End Damper for Gas Turbine Bleed Valve Vibration
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Solution Overview
Problem
Bleed valve components in gas turbine engines are susceptible to damaging vibrational loads due to their location, requiring a damping mechanism that is both flexible and durable to prevent failure.
Innovation Solution
A damping arrangement featuring a valve ring with a link and a damper, where the link has an end curvature that contacts the damper, providing elastic deformation to absorb vibrational loads and prevent damage to the bleed valve components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a damping mechanism is added to protect bleed valve components from vibrational loads, then reliability is improved, but device complexity increases
Solution Approach 1:
The damper is nested within the link structure itself, with the link containing a bore that receives the damper. This integration eliminates the need for separate mounting structures and reduces overall system complexity while maintaining vibration protection functionality.
Solution Approach 2:
The damper utilizes an elastomeric material that deforms elastically under vibrational loads. This flexible element absorbs shock and vibration without requiring complex mechanical structures, achieving reliability improvement through material properties rather than structural complexity.
2Strength
If the link uses a rigid structure for strength, then strength is improved, but ability to absorb vibration deteriorates
Solution Approach 1:
The link is divided into distinct functional zones: a rigid structural portion that provides strength and a separate elastomeric damper portion that absorbs vibration. This segmentation allows each component to optimize its primary function without compromising the other.
Solution Approach 2:
The system combines rigid link material (providing strength) with elastomeric damper material (providing vibration absorption). This composite approach integrates materials with complementary properties to simultaneously achieve strength and vibration resistance.
3Ease of operation
If the damper is made highly flexible to absorb motion, then ease of operation is improved, but durability deteriorates
Solution Approach 1:
The elastomeric material is selected and configured with specific durometer hardness and geometric parameters that optimize the balance between flexibility and durability. By carefully controlling material parameters and dimensions, the damper achieves sufficient compliance for motion absorption while maintaining durability under operational conditions.
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 damping arrangement effectively reduces the risk of damage from vibrations, ensuring the longevity of the bleed valve components and maintaining operational stability during engine start-up, acceleration, and deceleration.
Implementation Method 1
providing elastic deformation to absorb vibrational loads and prevent damage to the bleed valve components
Data Source
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AI summary
A link includes a link body with two ends, a ring bore with a ring bore axis and a bearing, a mount bore with a mount bore axis and a bearing. The link also has an end curvature at the end having the ring bore wherein the curvature axis is substantially perpendicular to the ring bore axis.