Natural Gas Burner Combustion Control via Hydrogen Analysis
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Solution Overview
Problem
Natural gas burners face risks such as overheating, combustion instability, and increased nitrogen oxide emissions due to high hydrogen content, which existing temperature monitoring methods cannot effectively address.
Innovation Solution
A combustion monitoring method and system that uses a gas analyser to measure hydrogen content and other gas components, combined with feedback signals from dynamic, emission, and temperature sensors, to adjust the natural gas flow rate through a control model, thereby controlling the combustion process and reducing risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temperature monitoring is used to control overheating risk, then overheating protection is achieved, but combustion instability and nitrogen oxide emissions cannot be controlled
Solution Approach 1:
The patent applies multi-functionality by implementing a control system that performs multiple monitoring functions simultaneously. The system uses a gas analyser to detect hydrogen content, a noise sensor to monitor combustion stability through acoustic signals, and a temperature sensor for thermal monitoring. The controller integrates all these signals to comprehensively control combustion risks including overheating, instability, and emissions, making the system versatile rather than single-purpose.
2Use of energy by moving object
If hydrogen content increases in natural gas, then energy content improves, but combustion stability deteriorates and explosion risk increases
Solution Approach 1:
The patent implements feedback control by continuously monitoring hydrogen content through the gas analyser and combustion stability through the noise sensor. The controller receives real-time signals from both sensors and dynamically adjusts the gas flow rate and combustion parameters. This closed-loop feedback mechanism allows the system to maintain stable combustion despite varying hydrogen content, automatically compensating for the increased explosion risk associated with higher hydrogen concentrations.
Solution Approach 2:
The system applies parameter changes by dynamically adjusting combustion parameters based on detected hydrogen content. When high hydrogen content is detected, the controller modifies operating parameters such as gas flow rate, air-to-fuel ratio, and combustion timing to maintain stable combustion. This adaptive parameter adjustment allows the system to accommodate varying energy content while preserving combustion reliability.
3Productivity
If gas flow rate is increased to meet energy demand, then productivity improves, but combustion control precision deteriorates
Solution Approach 1:
The patent applies dynamics by implementing dynamic control of the gas flow rate based on real-time combustion conditions. Rather than using a fixed flow rate, the controller continuously adjusts the gas flow dynamically in response to signals from the gas analyser and noise sensor. This dynamic adjustment mechanism allows the system to maintain precise combustion control even when operating at high productivity levels, adapting the flow rate to match actual combustion needs.
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
This approach allows for precise control of combustion, reducing the principal risks associated with natural gas burners and improving control accuracy by directly analyzing the gas composition and using feedback signals to adjust the flow rate.
Implementation Method 1
acquiring a measurement result for natural gas in a gas supply line of the natural gas burner, wherein the measurement result comprises a gas component in the natural gas and a corresponding content
Implementation Method 2
adjusting a flow rate of natural gas in the gas supply line of the natural gas burner according to the control information
Implementation Method 3
combustion of a natural gas burner
Data Source
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AI summary
A natural gas burner control system and combustion monitoring method therefor. The natural gas burner control system comprises a combustion controller (10) and a gas analyzer (20). The combustion controller (10) is connected, in a wired or wireless connection manner, to the gas analyzer (20) and a control valve (50) that is located in a gas supply line (30), so as to obtain a signal sent from the gas analyzer (20) and send or obtain information to or from the control valve (50) in the gas supply line (30). The combustion monitoring method comprises: a gas analyzer (20) samples from a gas supply line (30) and analyzes the natural gas, so as to obtain measurement results of gas components comprised in the natural gas and corresponding contents; then, the gas analyzer (20) sends the measurement results to a combustion controller (10); after obtaining the measurement results, the combustion controller (10) inputs the measurement results, as input data, to a preset control model, and directly or indirectly determines control information corresponding to the measurement results according to the output result provided by the control model for the input data; then the combustion controller (10) increases or decreases the flow according to the corresponding control information. The device and method can pre-control a natural gas burner, thereby reducing the main combustion risks of the natural gas burner.