Flame-Cutting Control for Blowtorch Gas Flow and Positioning
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Solution Overview
Problem
Conventional flame-cutting installations face difficulties in adjusting cutting parameters such as pressure and flow rate, leading to cutting defects, overconsumption of fluids, and safety risks due to manual control and lack of real-time regulation, with no means to detect load losses or blockages, and inadequate heating flame management throughout the cutting process.
Innovation Solution
A method and installation that automatically control and regulate the pressure and flow rate of fuel gas and oxygen, as well as the position and speed of the blowtorch, using predetermined optimum parameters stored in a control program, with real-time data processing and alerts for maintenance, enabling precise adjustments and optimizing cutting performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual control of fluid supply lines is used, then ease of operation is improved, but manufacturing precision deteriorates due to inability to adjust parameters according to workpiece characteristics
Solution Approach 1:
The patent replaces manual mechanical control of fluid supply lines with an automated control system that includes sensors, processors, and actuators. The system automatically adjusts oxygen and fuel gas flow rates based on detected workpiece characteristics, eliminating the need for manual parameter adjustment while improving cutting precision.
Solution Approach 2:
The patent dynamically changes fluid supply parameters (flow rate, pressure) based on workpiece characteristics such as thickness and material type. The control system modifies these parameters in real-time during the cutting process to optimize cutting quality for different workpiece conditions.
2Device complexity
If conventional on-or-off valves are used for fluid control, then device complexity is reduced, but loss of substance increases due to overconsumption of fuel gas and oxygen
Solution Approach 1:
The patent replaces conventional on-or-off valves with electronically controlled proportional valves that can precisely modulate fluid flow rates. This substitution increases device complexity slightly but enables precise control of fuel gas and oxygen consumption, significantly reducing waste and overconsumption.
Solution Approach 2:
The patent implements a feedback control system that continuously monitors fluid consumption and workpiece cutting status, then adjusts valve positions to optimize flow rates. This feedback mechanism prevents overconsumption by automatically reducing fluid supply when cutting conditions change or when the cut is complete.
3Ease of operation
If manual adjustment of blowtorch position is used, then ease of operation is improved, but manufacturing precision deteriorates due to haphazard positioning
Solution Approach 1:
The patent replaces manual positioning of the blowtorch with an automated positioning system that uses sensors and motors to precisely control blowtorch location and orientation. The system automatically adjusts the blowtorch position based on workpiece dimensions and cutting requirements, eliminating haphazard positioning while maintaining operational simplicity.
4Device complexity
If fixed heating flame is used throughout cutting process, then device complexity is reduced, but manufacturing precision deteriorates due to inability to adapt heating to different process phases
Solution Approach 1:
The patent implements a dynamic heating control system that automatically adjusts the heating flame intensity based on the cutting process phase and workpiece characteristics. The system transitions from high-intensity heating during the ignition phase to reduced heating during the cutting phase, optimizing heat input at each stage without requiring complex manual intervention.
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 solution improves cut quality, reduces fluid consumption, enhances operator safety, and optimizes production efficiency by automatically adjusting parameters based on workpiece characteristics and process phases, detecting potential issues, and managing heating requirements dynamically.
Implementation Method 1
heating the workpieces to be cut to their ignition temperature, in order to create a cutting priming point
Implementation Method 2
a heating flame is generated in the nozzle connected to the blowtorch, through a mixture of fuel gas and oxygen, to subject the workpieces to a local temperature in the order of 1100° C. to 1300° C.
Implementation Method 3
flame-cutting is an industrial method of cutting that oxidizes the iron contained in workpieces made of steel
Data Source
AI summary
The flame-cutting method includes determining optimum parameters in terms of the pressure and flow rate of the fuel gas and of the oxygen and in terms of the position and speed of travel of the blowtorch relative to the workpiece that is to be flame-cut, and/or to the various phases of the flame-cutting method, and/or to the type of nozzle employed. The method includes executing at least one program controlling the gas and oxygen supply lines and the device for moving the blowtorch and storing the device for automatically running at least one program for controlling the gas and oxygen supply lines and the device for moving the blowtorch in memory. The method also includes automatically selecting at least one control program, the device for automatically sending control setpoints to the gas and oxygen supply lines, and the device for moving the blowtorch.