Thixotropic Balancing Chamber for Rotary Vibration Control
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Solution Overview
Problem
Vibration in rotary systems of watercraft, such as mechanical propulsion systems, leads to safety and comfort issues due to instability, material fatigue, and increased wear and tear, which existing technologies like active vibration compensating apparatuses have not adequately addressed.
Innovation Solution
A method involving a rotational element with a chamber filled with a thixotropic balancing substance that distributes along a circumferential balancing area, compensating for the center of gravity shift caused by vibration, thereby reducing vibration and improving stability and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional balancing methods are used, then initial vibration levels can be controlled, but vibration increases over time due to center of gravity migration from wear and tear
Solution Approach 1:
The patent applies the dynamics principle by using a thixotropic substance that can change its flow properties in response to vibration. The substance transitions from a more solid state during normal operation to a flowing state during vibration, automatically redistributing to compensate for center of gravity shifts caused by wear and tear over time, thus maintaining balance throughout the service life.
Solution Approach 2:
The patent utilizes parameter changes by exploiting the thixotropic property of the balancing substance, which changes its viscosity and flow characteristics based on applied stress or vibration. This allows the substance to automatically adjust its distribution in response to vibration frequency and intensity, compensating for imbalance that develops during operation.
2Object-affected harmful factors
If active vibration compensating apparatuses are used, then vibration can be reduced, but the complexity of the system increases
Solution Approach 1:
The patent applies the self-service principle by designing a passive balancing system where the thixotropic substance automatically responds to vibration and redistributes itself without requiring external control systems, sensors, or active components. The substance self-adjusts its position in response to vibration-induced center of gravity shifts, eliminating the need for complex active compensation apparatuses.
Solution Approach 2:
The patent replaces complex mechanical active vibration compensation systems with a simpler passive system based on thixotropic material properties. Instead of using motors, sensors, and control mechanisms, the invention uses the inherent rheological properties of the thixotropic substance to automatically compensate for vibration and imbalance.
3Object-affected harmful factors
If rotational elements are replaced to maintain balance, then vibration can be reduced, but wear and tear continues to accumulate
Solution Approach 1:
The patent applies the preliminary action principle by pre-filling the rotational element with thixotropic balancing substance during manufacturing. This preliminary preparation allows the substance to continuously compensate for center of gravity shifts that occur during operation, eliminating the need for periodic replacement of rotational elements to maintain balance.
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 minimizes vibration, enhances safety and stability, reduces material fatigue, and decreases noise, while also extending the lifespan of watercraft components by maintaining balance and reducing wear and tear.
Implementation Method 1
The thixotropic balancing substance 330 is able to flow under the influence of the vibration induced by the rotary system 120, 130, 140. Hence, owing to the vibration, the thixotropic balancing substance 330 distributes itself in the chamber 310 to reduce or minimize the vibration.
Data Source
AI summary
A method of reducing vibration in a rotary system (120, 130, 140) of a watercraft, for example a cargo ship (100), comprising balancing said rotary system (120, 30, 140), characterized by providing a rotational element (300, 302-306) comprising a chamber (310-312) having a fulcrum on a rotational axis (340) of said rotational element (300, 302-306), comprising a circumferential balancing area (320) and being partially filled with an amount of a thixotropic balancing substance (330). A corresponding apparatus and system.