Pump Vibration Monitoring via Transition Region Sensor
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Solution Overview
Problem
Existing pump monitoring methods rely on operator experience and may ignore many operating parameters, leading to inaccuracies in estimating pump performance and wear, which can result in inefficient operations and increased costs due to sub-optimal performance or premature failure.
Innovation Solution
A system comprising a pump with a vibration sensor mounted on the casing to detect vibrations at the transition region, which processes data to determine wear or performance conditions without visual inspection, using a processor for spectral analysis and potentially machine learning algorithms to classify conditions based on vane pass frequency and historical data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If operator observation and manual measurement are used to monitor pump condition, then the monitoring method is simple and requires minimal equipment, but the measurement precision and reliability of pump performance estimation deteriorate due to reliance on operator experience and inability to measure many operating parameters
Solution Approach 1:
The patent replaces manual operator observation and mechanical measurement methods with electronic vibration sensing and signal processing systems. Accelerometers and vibration sensors automatically capture pump condition data, eliminating reliance on operator experience while significantly improving measurement precision through electronic detection and spectral analysis of vibration signals.
Solution Approach 2:
The patent introduces vibration analysis as an intermediary measurement method that indirectly assesses pump condition. By monitoring vibrations from the pump system and analyzing frequency spectra, the system infers wear and performance degradation without requiring direct measurement of all operating parameters, thus improving accuracy while maintaining practical simplicity.
2Measurement precision
If comprehensive monitoring of all operating parameters is implemented to improve pump performance estimation accuracy, then the measurement precision improves, but the device complexity and cost increase significantly
Solution Approach 1:
The patent extracts and focuses on vibration as a specific, informative parameter that serves as a proxy for overall pump condition. Rather than implementing comprehensive monitoring of all operating parameters, the system isolates vibration analysis as the key indicator, using spectral decomposition to extract meaningful information about wear and performance from this single measurement stream.
Solution Approach 2:
The patent transforms the raw vibration signal into meaningful diagnostic information by changing the parameter representation through spectral analysis. By converting time-domain vibration data into frequency-domain spectra and identifying characteristic frequencies related to pump components, the system derives detailed condition information from a single vibration measurement, avoiding the need for multiple sensors.
3Device complexity
If pump monitoring is performed manually by operators to reduce equipment complexity, then the device complexity remains low, but the reliability of pump condition assessment deteriorates due to sub-optimal performance detection and delayed maintenance decisions
Solution Approach 1:
The patent enables the pump system to self-monitor its own condition through automated vibration sensing and analysis. The system continuously assesses its own wear and performance state without external intervention, providing reliable, real-time condition information that triggers maintenance decisions based on actual pump status rather than scheduled intervals or operator judgment.
Solution Approach 2:
The patent implements continuous feedback monitoring where vibration data is constantly collected, analyzed, and used to update the assessment of pump condition. This closed-loop approach provides ongoing reliability information, allowing the system to detect degradation trends and alert operators to emerging issues before they lead to failure, significantly improving assessment reliability compared to manual periodic checks.
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
Enables accurate prediction of pump degradation and component replacement needs, reducing energy consumption and operational costs by monitoring vibrations indicative of wear and performance changes, allowing for proactive maintenance and optimized operation.
Implementation Method 1
The vibration sensor is mounted to the pump casing and arranged in use to detect vibration of the transition region
Data Source
AI summary
Disclosed is a pump system comprising a pump and a sensor. The pump comprises a pump casing defining a pump chamber, an inlet for receipt of flowable material into the chamber, an outlet for discharge of flowable material from the chamber, and an impeller disposed within the pump chamber to accelerate flowable material within the pump chamber. The pump also comprises a transition region extending between an inner peripheral surface of the pump chamber and an inner peripheral surface of the outlet, the transition region configured in use to divert flowable material accelerated by the impeller to the outlet. The vibration sensor is mounted to the pump casing and arranged in use to detect vibration of the transition region.