Gas Turbine Seal Support Structure for Vibration-Damping Sealing
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Solution Overview
Problem
Gas turbine engine components experience vibrations during high-speed operation, leading to reduced efficiency and wear, necessitating the development of sealing systems that minimize and limit vibration.
Innovation Solution
A seal support structure with radial movement channels and a circumferential seal configuration that allows for radial movement and circumferential retention, reducing vibration transmission to the seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the seal support structure is made rigid to ensure stable sealing, then sealing reliability is improved, but vibration and wear increase due to high-speed rotation
Solution Approach 1:
The seal support structure incorporates radial movement channels that allow the seal support to dynamically adjust its position radially while maintaining circumferential retention. This dynamic capability enables the seal support to absorb vibrations from high-speed rotating components, reducing transmitted vibrations while maintaining reliable sealing through controlled movement rather than rigid fixation.
2Object-affected harmful factors
If the seal support structure allows radial movement to reduce vibration, then vibration damping is improved, but sealing precision may deteriorate
Solution Approach 1:
The seal support structure is segmented into distinct functional zones: radial movement channels that permit vibration-damping motion, and circumferential retention features that maintain precise sealing positioning. This segmentation allows radial movement for vibration reduction while preserving circumferential precision for effective sealing.
Solution Approach 2:
Different portions of the seal support structure have different properties: the radial direction allows movement through channels for vibration damping, while the circumferential direction maintains retention and precision for sealing. This local differentiation of mechanical properties enables simultaneous vibration reduction and sealing precision.
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 structure effectively dampens vibrations, enhancing engine efficiency and reducing wear by allowing the seal support to move radially relative to the static mount, thus improving the operational integrity of the gas turbine engine.
Implementation Method 1
The structure effectively dampens vibrations, enhancing engine efficiency and reducing wear by allowing the seal support to move radially relative to the static mount
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
The present disclosure relates to sealing systems (200) for gas turbine engines. In one embodiment, a seal support structure (100) for a gas turbine engine includes a seal support (110) configured to retain a circumferential seal (130) and an engine support (105) configured for mounting the seal support structure to a gas turbine engine mount. The engine support includes at least one channel (115) configured to provide radial movement of the seal support structure and circumferential retention of the seal support. Another embodiment is directed to a sealing system (200) including a circumferential seal (130) and seal support structure configured to provide radial movement.