Combustion Injector Pressure Feedback Control
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Solution Overview
Problem
Existing burners lack a means to adjust flame characteristics in real-time, relying on manual adjustments that are time-consuming and inefficient, particularly in industrial combustion processes where precise control of flame length and heat transfer is crucial.
Innovation Solution
A feedback system that utilizes a pressure detector to adjust the flow section of a secondary passage in the burner, allowing for automatic regulation of gas pressure and flow distribution between primary and secondary injectors, ensuring optimal flame characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual adjustment of flow rates is used to control flame characteristics, then flame length and luminosity can be controlled, but the adjustment process is time-consuming and lacks real-time feedback
Solution Approach 1:
The patent implements a feedback control system where a detector monitors flame characteristics (such as flame length or luminosity) in real-time and sends signals to an actuator that automatically adjusts the flow rate of combustion agents. This closed-loop feedback mechanism eliminates manual adjustment delays and maintains precise flame characteristics dynamically, directly resolving the contradiction between control precision and adjustment time.
2Manufacturing precision
If multiple concentric passages are used to distribute fuel and oxidant, then flame shape and heat transfer profile can be optimized, but the device complexity increases
Solution Approach 1:
The patent divides the combustion agent distribution system into multiple concentric passages, with each passage dedicated to delivering specific combustion agents (fuel and oxidant) to different zones. This segmentation allows independent control of each passage's flow rate through separate actuators, enabling precise heat transfer profile control while maintaining manageable structural complexity through modular design.
Solution Approach 2:
The patent employs nested concentric passages where inner passages are positioned within outer passages, creating a compact multi-zone distribution structure. This nesting arrangement allows multiple combustion agent streams to be delivered simultaneously from a single burner body, optimizing flame shape and heat transfer while minimizing the overall device footprint and structural complexity.
3Stability of the object's composition
If real-time feedback control is implemented with pressure detection, then flame momentum stability can be maintained, but the device complexity and cost increase
Solution Approach 1:
The patent incorporates a pressure detector that monitors the pressure of gaseous combustion medium in real-time and feeds this information to a control system that adjusts the flow section of passages accordingly. This feedback mechanism maintains stable flame momentum by compensating for variations in combustion agent supply, directly addressing the stability improvement while accepting controlled system complexity.
Solution Approach 2:
The patent replaces manual mechanical adjustment mechanisms with an automated control system that uses pressure detection and electronic actuation. This substitution eliminates the need for complex manual adjustment mechanisms while achieving more precise and stable flame momentum control through automated feedback, reducing overall system complexity despite adding sensing and control electronics.
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 real-time adjustment of flame characteristics, optimizing heat transfer and production quality by maintaining stable flame momentum across varying power levels, reducing operator intervention and production costs.
Implementation Method 1
a pressure detector for detecting a pressure or a variation in gaseous pressure in the chamber
Implementation Method 2
at least one primary injector for transporting a primary flow of the agent from the chamber to the combustion zone and for injecting said primary flow into the combustion zone
Implementation Method 3
at least one secondary injector for transporting a secondary flow of the agent from the chamber to the combustion zone and for injecting said secondary flow into the combustion zone. The at least one secondary passage has an adjustable flow section
Implementation Method 4
the control system is also connected to an adjustment system and controls said adjustment system, so that the flow section of the at least one secondary passage of the assembly is regulated according to the pressure or the variation pressure detected by the pressure sensor of the assembly
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Assembly for injecting a gaseous combustion agent into a combustion zone, the assembly comprising, a chamber (11), at least one primary injector (21) for transporting a primary flow of the gaseous agent from the chamber (11) to the combustion zone (1) and for injecting said primary flow into the combustion zone (1), at least one secondary injector (22) for transporting a secondary flow of the agent from the chamber (11) to the combustion zone (1) and for injecting said secondary flow into the combustion zone (1), a pressure sensor (30) for detecting a gas pressure or a variation in gas pressure in the chamber (11), a control system (31) for adjusting a flow section of at least one secondary passage fluidly connecting the at least one secondary injector (22) to the chamber (11), a control system (32) connected to the pressure sensor (30) and the control system (31),the control system (32) controlling the adjustment system (31) so that the flow section of at least one secondary passage is regulated according to the pressure or pressure variation detected by the pressure sensor (30).