Microwave Cyclone Blockage Detection in Cement Manufacturing
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Solution Overview
Problem
Current methods for detecting cyclone blockages in cement production, such as using gamma rays, are ineffective for detecting centimeter-sized objects, pose health risks, and require costly and unnecessary equipment, necessitating a safer and more effective non-contact detection solution.
Innovation Solution
A device utilizing microwaves as electromagnetic waves to detect blockages within cyclones, emitting signals between 10^9 and 10^10 hertz, allowing for the detection of material clusters of various sizes without the need for ionizing radiation, featuring a transmitter and sensor setup that can automatically trigger corrective actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If gamma rays are used for detection, then detection capability is achieved, but health risks and safety hazards increase
Solution Approach 1:
The patent replaces the mechanical/physical system of gamma ray emission and detection with an electromagnetic wave-based system using microwaves. This substitution eliminates ionizing radiation while maintaining the ability to detect material clusters through electromagnetic wave attenuation, thereby resolving the contradiction between detection capability and health safety.
Solution Approach 2:
The patent employs microwave technology which uses non-ionizing, harmless electromagnetic waves that can be freely emitted without special containment. This replaces expensive and hazardous gamma ray sources with affordable, safe microwave transmitters, allowing routine detection without the safety infrastructure required for radioactive materials.
2Object-affected harmful factors
If gamma ray enclosures with thick walls are used, then radiation safety is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces the need for thick radiation-shielding walls with a simple microwave transmitter and sensor system. Since microwaves are non-ionizing and harmless at the power levels used, no special enclosures or shielding are required, dramatically simplifying the device structure while maintaining safety.
Solution Approach 2:
The patent extracts and eliminates the hazardous gamma ray emission component from the detection system, retaining only the essential function of electromagnetic wave transmission and detection. This removal of the harmful element naturally eliminates the need for complex radiation protection enclosures.
3Ease of operation
If manual intervention is performed for blockage clearing, then corrective action is achieved, but human safety risks increase
Solution Approach 1:
The patent implements a feedback-based detection system that continuously monitors the cyclone for material clusters and automatically triggers air cannons when blockages are detected. This closed-loop feedback mechanism eliminates the need for manual intervention by providing real-time detection and automatic corrective action, thereby protecting personnel from exposure to high temperatures and quicklime.
Solution Approach 2:
The patent enables the cyclone system to detect and clear its own blockages autonomously through the integrated detection device and air cannon system. The system performs self-diagnosis and self-correction without requiring human operators to enter hazardous areas, making the system self-sufficient and safe.
4Loss of time
If detection time is delayed, then response time is reduced, but blockage severity increases requiring shutdown
Solution Approach 1:
The patent implements continuous monitoring of the cyclone for material clusters, ensuring that detection occurs constantly rather than periodically. This continuous detection capability enables immediate identification of blockage risks, allowing for timely corrective action that maintains continuous operation and prevents production shutdowns.
Solution Approach 2:
The patent detects material clusters before they develop into complete blockages that would require shutdown. By identifying early-stage clusters and triggering preventive air cannon discharge, the system performs preliminary corrective action that eliminates potential blockages before they affect production continuity.
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 safe, efficient detection of cyclone blockages, reducing the risk of human intervention and operational disruptions, while avoiding the hazards and costs associated with gamma ray technology, by accurately identifying clusters and obstructions within the cyclone.
Implementation Method 1
The transmitter (28) is suitable for emitting electromagnetic waves through the cyclone (10) and the sensor (30) is suitable for picking up the attenuated electromagnetic waves after crossing the cyclone
Data Source
Figure 1~2
AI summary
Device for detecting risks of blockage of a cyclone (10) in the manufacture of cement comprising an electromagnetic wave emitter (28) and an electromagnetic wave sensor (30). The emitter is suitable for emitting electromagnetic waves through the cyclone and the sensor is suitable for capturing the electromagnetic waves attenuated after crossing the cyclone so as to detect the presence of clusters resulting from the accumulation of material in the cyclone or the blockage thereof. The device is characterized in that the electromagnetic waves are microwaves.