Self-Powered Piping Vibration Absorber With Wire Damping
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Solution Overview
Problem
Conventional dynamic vibration absorbers lack damping and shock absorption functions to prevent fatigue damage and do not have a vibration monitoring system that can remotely monitor vibrations without external power supply, making it difficult to predict and mitigate piping vibrations in power plants effectively.
Innovation Solution
A piping vibration absorber apparatus with an elastic plate, mass plate, and wire damper that absorbs vibration energy and shock, incorporates a vibration damping material, and uses energy harvesting to power a vibration sensor, enabling remote monitoring of piping vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional dynamic vibration absorbers are installed to reduce piping vibrations, then the natural frequency can be adjusted to match vibration frequency, but the device lacks damping function to prevent fatigue damage and shock absorption function
Solution Approach 1:
The patent combines multiple functions into a single integrated device: the dynamic vibration absorber (elastic plate with mass plate) for vibration reduction, wire dampers for shock absorption, and vibration damping material for fatigue prevention. This merging resolves the contradiction by providing all three functions in one apparatus rather than requiring separate components.
Solution Approach 2:
The patent uses composite material structures including the combination of elastic plate material with vibration damping material, and wire damper materials that provide both strength and damping properties. This allows the device to simultaneously achieve vibration reduction, fatigue resistance, and shock absorption capabilities.
2Reliability
If conventional dynamic vibration absorbers are used, then vibration frequency can be controlled, but the device lacks vibration monitoring system without external power supply
Solution Approach 1:
The patent implements energy harvesting using the vibration energy generated by the absorber itself to power the vibration sensor and monitoring system. This self-service approach eliminates the need for external power supply, resolving the contradiction by making the monitoring system self-powered through the very vibrations it monitors.
Solution Approach 2:
The patent incorporates a vibration monitoring system that provides real-time feedback on vibration levels and trends. This feedback mechanism allows for continuous monitoring without external power by utilizing the vibration energy from the system itself, creating a self-sustaining monitoring capability.
3Object-affected harmful factors
If rigid supports or damper supports are added to reduce piping vibrations, then vibration effects can be mitigated, but the installation requires external structures and re-performance of piping stress analysis
Solution Approach 1:
The patent segments the vibration mitigation function into a separate, self-contained apparatus that can be installed independently on the piping without requiring external support structures. This segmentation allows the device to be added without complex installation procedures or re-analysis of the entire piping system.
Solution Approach 2:
The patent creates a universal vibration reduction apparatus that can be installed directly on various piping configurations without requiring specific external support structures. The device's multi-functionality (vibration reduction, shock absorption, fatigue prevention) is achieved through integrated components that work together in a single installable unit.
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 apparatus effectively reduces piping vibrations, prevents fatigue damage, and allows real-time remote monitoring of vibration trends, enhancing power plant safety and operation by adjusting natural frequencies and damping values without external power.
Implementation Method 1
supply power to a vibration sensor through its own energy harvesting without external power supply
Implementation Method 2
absorb vibration energy through a vibration damping material and the curvature of the elastic plate
Implementation Method 3
adjust the natural frequency to match the vibration frequency of the piping, and through this, the vibration of the piping and the vibration of the dynamic vibration absorber are in reverse phase
Implementation Method 4
absorb vibration energy and shock using a wire damper
Data Source
AI summary
Provided is a piping vibration absorber apparatus having a vibration monitoring system including a vibration absorber installed in pipe, the vibration absorber including an elastic plate having one side coupled to the pipe and formed in a cantilever shape; a mass plate installed on the elastic plate and having a specified mass; and a wire damper including a steel wire and coupled to another side of the elastic plate.