Non-Energized Sensor for Flammable Liquid Purification Safety
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Solution Overview
Problem
In systems that process flammable liquids, such as organic solvents, it is challenging to accurately monitor the distribution and movement of the liquid within a housing due to safety restrictions on energized equipment, which can lead to difficulties in maintaining efficient purification processes and preventing potential explosions.
Innovation Solution
A liquid purification unit is designed with a non-energized sensor system that detects the presence or absence of liquid flowing out from the storage tank, allowing for the monitoring of liquid distribution and movement within a housing, while ensuring safety by avoiding ignition sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If energized equipment is installed inside the housing to monitor liquid distribution and movement, then measurement precision is improved, but the risk of ignition and explosion increases
Solution Approach 1:
The patent introduces a non-energized sensor as an intermediary device that can detect liquid presence and movement without requiring electrical power inside the hazardous zone. The sensor transmits detection data through magnetic coupling or other non-energized communication methods, enabling monitoring while maintaining explosion safety. This resolves the contradiction by providing measurement capability without introducing ignition sources.
Solution Approach 2:
The patent replaces traditional energized electrical sensors with non-energized sensing mechanisms that rely on physical principles such as magnetic fields, optical detection, or mechanical displacement sensing. These substitution mechanisms eliminate electrical components inside the housing, thereby removing the ignition risk while preserving the ability to detect liquid distribution and movement status.
2Reliability
If no energized equipment is installed inside the housing to prevent ignition, then safety is improved, but the ability to accurately monitor liquid distribution and movement deteriorates
Solution Approach 1:
The non-energized sensor acts as a mediator that bridges the gap between safety requirements and monitoring needs. It provides measurement capability through non-energized detection principles, allowing the system to maintain explosion prevention while achieving accurate liquid status monitoring.
Solution Approach 2:
The patent changes the operational parameters of the sensing system by using non-energized detection methods with different physical principles (magnetic, optical, mechanical) instead of traditional electrical sensing. This parameter change enables monitoring functionality while maintaining the safety constraint of no energized equipment inside the housing.
3Reliability
If non-energized sensors are used to detect liquid presence, then safety is maintained, but the complexity of the monitoring system increases
Solution Approach 1:
The patent employs simple, inexpensive non-energized sensor components that can be easily replaced if needed. These sensors use straightforward physical principles without complex electronics, reducing overall system complexity while maintaining safety. The simplicity of the sensor design offsets the initial perception of increased complexity.
Data Source
AI summary
Liquid purification unit includes purification device that purifies a flammable liquid, liquid storage tank that stores the liquid supplied to purification device, at least one non-energized sensor that detects the presence or absence of liquid flowing out from liquid storage tank, and housing that accommodates purification device, liquid storage tank, and the at least one non-energized sensor.