Molten Sulfur Pump Sensor Placement for Vibration Monitoring
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Solution Overview
Problem
Molten sulfur pumps face frequent failures due to various operational issues, leading to high maintenance and capital costs, and existing monitoring technologies are inadequate for early detection of failure modes.
Innovation Solution
A system comprising a vibration sensor with a resonant layer made of electrically conductive nanomaterials and a temperature sensor, integrated with a computer system to monitor the condition of vertical molten sulfur pumps, allowing for real-time detection of vibrational strain and temperature anomalies, which can indicate potential failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional monitoring technologies are used for molten sulfur pumps, then the system is simpler and easier to implement, but the detection precision and ability to identify failure modes is insufficient
Solution Approach 1:
The monitoring system is segmented into specialized sensors (vibration sensors with resonant layers, temperature sensors) that can be attached to specific components of the pump. This segmentation allows each sensor to focus on detecting specific failure modes, improving detection precision without requiring complete system redesign
Solution Approach 2:
The invention changes the operational parameters of the sensors by operating them at resonant frequencies. The resonant layers are designed to vibrate at specific frequencies when exposed to vibrations from failing pump components, significantly enhancing the detection precision for specific failure modes while keeping the sensor structure relatively simple
2Reliability
If no monitoring system is installed, then the device complexity is lower, but the reliability and operating life of the pump decreases due to undetected failures
Solution Approach 1:
The monitoring system performs preliminary detection of failure modes before they lead to complete pump failure. By continuously monitoring vibrations and temperatures, the system can identify early signs of component degradation and alert operators to take preventive action, thereby maintaining high reliability
Solution Approach 2:
The invention replaces complex mechanical monitoring systems with resonant layer sensors that use acoustic wave principles. These sensors detect failures through changes in resonant frequency caused by mechanical vibrations, providing reliable failure detection with simpler sensor construction
3Reliability
If frequent maintenance is performed, then the reliability is improved, but the productivity and operating time are reduced due to maintenance interruptions
Solution Approach 1:
The monitoring system enables preliminary detection of failure conditions, allowing maintenance to be scheduled based on actual equipment condition rather than fixed intervals. This condition-based maintenance approach maintains high reliability while minimizing unnecessary maintenance interruptions to productivity
Solution Approach 2:
The system enables self-monitoring of pump health through automated vibration and temperature sensing. The resonant layers automatically detect and signal failure conditions without requiring continuous manual inspection, allowing the pump to operate continuously until actual failure symptoms are detected
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 system effectively detects operational issues and failure modes in molten sulfur pumps, reducing maintenance costs and extending equipment life by enabling early intervention and proper scheduling of maintenance.
Implementation Method 1
The resonant layer includes an electrically conductive nanomaterial and is configured to produce a resonant response in response to receiving a radio frequency signal
Data Source
AI summary
A vertical molten sulfur pump assembly includes a pump motor disposed in a top portion and an impeller disposed in a bottom portion, within an impeller casing. A pump inlet is disposed at the second end below the impeller casing. The vertical molten sulfur pump assembly is configured to pump molten sulfur into the inlet and upwards through a discharge passageway by rotation of the impeller. A vibration sensor and a temperature sensor are disposed on an external surface of the bottom portion, on or proximate to the impeller casing and the pump inlet. A temperature sensor is configured to measure a temperature of the molten sulfur proximate to the pump inlet. A vibration sensor includes a substrate comprising a polymer and a resonant layer, and resonant layer includes an electrically conductive nanomaterial and is configured to produce a resonant response in response to receiving a radio frequency signal.