Multi-Chamber Fluid Bearing for Deformability and Load Capacity
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Solution Overview
Problem
Existing fluid bearings face a trade-off between deformability and load capacity, making them unsuitable for applications requiring both high deformability and high load capacity, and they often require frequent maintenance, especially in hard-to-reach locations like offshore wind turbines.
Innovation Solution
A fluid bearing design featuring multiple deformable pressure chambers, each independently connected to the bearing surface, which allows for high deformability while maintaining high load capacity, and includes a force distributer and a deformable bearing body composed mainly of rubber-like materials for improved load balancing and reduced friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the deformability of a fluid bearing is increased, then the bearing can better adapt to asymmetric loading and irregular bearing surfaces, but the load capacity decreases
Solution Approach 1:
The fluid bearing is divided into multiple independently controllable pressure chambers (at least two chambers) that can be differentially pressurized. This segmentation allows different regions of the bearing to deform independently, enabling the bearing to adapt to asymmetric loading conditions and irregular bearing surfaces while maintaining overall load capacity through coordinated chamber pressurization.
Solution Approach 2:
The bearing employs dynamic pressurization control where operating fluid is supplied to different pressure chambers at different pressures based on real-time loading conditions. This dynamic adjustment allows the bearing to maintain optimal deformability and load capacity balance under varying operational conditions, transitioning from static to adaptive performance.
2Reliability
If traditional bearings are used in hard-to-reach locations, then the bearing can provide support, but maintenance effort and downtime increase
Solution Approach 1:
The fluid bearing incorporates self-lubrication through operating fluid that is circulated through the bearing structure, eliminating the need for external lubrication systems. The bearing surfaces are designed to self-regulate friction and wear through fluid pressure distribution, reducing maintenance requirements for remote installations where service access is difficult.
3Adaptability or versatility
If fluid bearings are designed for high deformability, then they can conform to irregular surfaces, but friction reduction effectiveness decreases
Solution Approach 1:
The bearing utilizes hydraulic pressure from operating fluid supplied to multiple pressure chambers to create controlled deformation of the bearing surface. This pneumatic-hydraulic mechanism enables the bearing to conform to irregular surfaces while maintaining fluid film separation between bearing surfaces, thereby reducing friction through hydrodynamic lubrication even in deformed configurations.
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 design achieves a combination of high deformability and load capacity, reducing maintenance needs and enhancing the durability and efficiency of bearings, particularly in challenging environments like wind turbines.
Implementation Method 1
The deformable walls may e.g. be flexible walls, for example made of elastic material (e.g. rubber or a rubber-like material)
Implementation Method 2
at least two deformable pressure chambers, each pressure chamber being independently fluidly connected to the first bearing surface
Implementation Method 3
each pressure chamber being independently fluidly connected to the first bearing surface for receiving an operating fluid
Implementation Method 4
fluid bearing is configured to reduce, during use, friction between a first and a second bearing surface
Data Source
Figure 1a~1c
Figure 2a~2b
Figure 3a~3b
AI summary
A fluid bearing configured to reduce, during use, friction between a first and a second bearing surface, the bearing comprising at least two deformable pressure chambers, each pressure chamber being independently fluidly connected to the first bearing surface for receiving an operating fluid.