Screw Feeder Revolution Counter for Dust-Resistant Fuel Monitoring
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Solution Overview
Problem
Conventional methods for monitoring fuel consumption in biomass boilers are inaccurate, particularly during startup and shutdown, and fail to account for latent weight changes due to dust, making it difficult to diagnose performance issues effectively.
Innovation Solution
A device comprising a revolution counter connected to a screw feeder, which measures the turns of the feed screw and converts them into mass or volume of fuel output, using a mechanical counter with low surface energy materials to reduce dust interference, and a data processor to record and analyze the fuel output data in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods (silo height monitoring, deposit weighing) are used to measure fuel consumption, then the measurement is simpler to implement, but the measurement precision is poor and cannot provide real-time data during different operational states
Solution Approach 1:
The patent replaces complex mechanical measurement systems (silo height monitoring, deposit weighing) with a simpler mechanical revolution counter that directly counts screw rotations. This substitution provides real-time fuel consumption data with high precision while reducing device complexity, as the revolution counter integrates directly with the existing screw feeder mechanism without requiring additional complex sensors or weighing systems.
Solution Approach 2:
The patent introduces a revolution counter as an intermediary device between the screw feeder and the control system. This intermediary component translates mechanical screw rotations into measurable signals that represent fuel consumption, enabling real-time monitoring without directly measuring fuel mass or volume, thus simplifying the overall measurement system while improving accuracy.
2Reliability
If mechanical revolution counters are used, then the device is less susceptible to airborne dust, but the device complexity increases compared to simple monitoring methods
Solution Approach 1:
The patent uses the screw feeder's own rotation as an intermediary measurement basis, counting revolutions through a mechanical counter rather than directly measuring fuel properties that are susceptible to dust interference. This approach provides reliable measurements in dusty biomass handling environments while keeping the counter mechanism relatively simple and robust.
Solution Approach 2:
The system uses the existing screw feeder rotation mechanism to provide its own measurement signal, eliminating the need for separate complex sensing systems that would be vulnerable to dust. The screw's own motion serves as the measurement reference, reducing device complexity while maintaining reliability in dusty conditions.
3Loss of information
If real-time fuel consumption monitoring is implemented, then diagnostic capability is improved, but the device complexity and cost increase
Solution Approach 1:
The patent replaces complex electronic monitoring systems with a simple mechanical revolution counter that directly integrates with the screw feeder. This mechanical approach provides real-time fuel consumption information without requiring complex sensors, processors, or power systems, thus improving diagnostic capability while minimizing increases in device complexity and cost.
Solution Approach 2:
The monitoring system uses the existing screw feeder mechanism to generate its own measurement data through revolution counting, eliminating the need for external complex monitoring infrastructure. This self-service approach provides continuous real-time information for diagnostics while keeping the added complexity minimal.
Data Source
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AI summary
The present disclosure relates to a device for measuring fuel output of a screw feeder, the device comprising: a revolution counter configured to connect to a feed screw of a screw feeder; a signal interface in communication with the revolution counter and configured to output a signal corresponding to a revolution of the feed screw; and a coupling portion for coupling the device to an exterior of the screw feeder.