Dynamic Thrust Bearing Pressure Balancing for Pump Axial Loads
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Solution Overview
Problem
Existing thrust bearing systems in fluid pumps are unable to dynamically and efficiently support axial thrusts, leading to axial movement and oscillations of the impeller shaft, which results in increased frictional losses and potential damage to pump components.
Innovation Solution
The implementation of dynamic thrust bearing systems that adjust fluid pressures on the forward and aft sides of the thrust disc to counteract axial thrusts, utilizing hydraulically actuated systems, tapered thrust discs, shape-memory alloy deflectors, and labyrinth seals to stabilize the impeller shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing thrust bearing systems are used in fluid pumps, then the structure is simple, but the system cannot dynamically support axial thrusts leading to axial movement and oscillations of the impeller shaft
Solution Approach 1:
The thrust bearing system transitions from a static structure to a dynamic one by incorporating adjustable fluid pressure zones that can adapt to varying axial thrust conditions. The system uses controllable fluid delivery to modify bearing characteristics in real-time, enabling dynamic support of axial loads while maintaining stability and reducing shaft oscillations.
Solution Approach 2:
The invention applies hydraulic principles by using fluid pressure to control and adjust the thrust bearing characteristics. Fluid is delivered to specific zones within the bearing to create adjustable pressure distributions that counteract axial thrusts, providing dynamic support without mechanical adjustment mechanisms.
2Loss of energy
If existing thrust bearing systems are used, then the device complexity is low, but frictional losses increase due to axial movement and oscillations
Solution Approach 1:
Hydraulic pressure zones are created within the thrust bearing to provide continuous support against axial movement. By delivering fluid to controlled zones, the system maintains optimal bearing clearance and reduces frictional losses associated with shaft oscillations and axial movement, thereby minimizing energy losses.
Solution Approach 2:
The system dynamically changes the fluid pressure parameters within the thrust bearing to optimize performance under varying operating conditions. By adjusting pressure levels and distribution patterns, the bearing adapts to different axial loads, maintaining low friction and energy efficiency across a range of operating states.
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
These systems effectively reduce axial movement and oscillations of the impeller shaft, minimize frictional energy losses, and enhance the operational efficiency and lifespan of the pump by dynamically supporting axial thrusts.
Implementation Method 1
adjust fluid pressures on the forward and aft sides of the thrust disc to counteract axial thrusts
Implementation Method 2
labyrinth seals to stabilize the impeller shaft
Data Source
AI summary
Apparatus, systems, and articles of manufacture are disclosed to dynamically support axial thrust in pumps. An example apparatus disclosed herein includes a first thrust pad, a second thrust pad, and a thrust disc between the first thrust pad and the second thrust pad, the thrust disc including a first side adjacent to the first thrust pad. a second side adjacent to the second thrust pad, an outer surface, a first channel extending between the outer surface to the first side, and a second channel extending between the outer surface of the thrust disc to the second side.