Welding Gas Flow Regulation With Feedback and Online Monitoring
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Solution Overview
Problem
Welding processes are wasteful due to excessive protective gas flow, with existing equipment releasing gas at high rates beyond the needed 35 SCFH of argon, leading to significant gas wastage and increased costs, as the flow rate is not accurately controlled, especially with high initial pressures causing excessive gas release with each trigger pull.
Innovation Solution
An electronic regulating system for protective gas flow in welding equipment with a connectivity interface that monitors real-time parameters like open arc time, gas flow, electric current, electric voltage, and wire feed speed, using sensors and a microcontroller to control gas flow via a proportional valve, enabling online monitoring, process control, and data storage, which reduces gas wastage by optimizing flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If high initial pressure (20-50 PSIG) is used in the gas supply system, then gas can be delivered to the welding nozzle, but excessive gas is released through the nozzle when the torch trigger is pulled, causing significant gas wastage
Solution Approach 1:
The patent applies a proportional valve that dynamically adjusts the gas flow rate based on real-time welding parameters (current, voltage, wire feed speed) rather than maintaining a fixed high pressure flow. The valve modulates the gas supply to match the actual welding needs, transforming the static high-pressure system into a dynamic controlled system that releases gas at the precise rate required during welding operations.
Solution Approach 2:
The system implements a closed-loop feedback mechanism where sensors continuously monitor welding parameters (current, voltage, wire feed speed) and feed this information to the microcontroller, which then adjusts the proportional valve to maintain optimal gas flow. This feedback loop ensures the gas flow rate automatically adapts to changing welding conditions, preventing both excessive gas release and insufficient shielding.
2Measurement precision
If traditional flow control equipment is used, then gas flow can be regulated, but the system lacks real-time monitoring and data tracking capabilities, making it difficult to verify optimal gas output adjustment and track productivity data
Solution Approach 1:
The patent integrates multiple functions into a single system: the microcontroller not only controls the proportional valve for gas flow regulation but also serves as a data acquisition and processing unit. It collects welding parameters from sensors, calculates gas consumption, monitors productivity metrics, and communicates with external systems, replacing multiple separate devices with one multi-functional intelligent controller.
Solution Approach 2:
The system introduces a Wi-Fi communication module as an intermediary between the welding equipment and external servers or user interfaces. This mediator enables real-time transmission of welding data, gas consumption information, and productivity metrics to cloud-based platforms or local displays, allowing users to monitor and analyze data remotely without adding complexity to the core welding control system.
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
The system effectively reduces gas wastage by optimizing gas flow rates, providing real-time monitoring and control, leading to significant savings and improved user management of welding processes through better integration of information and data tracking.
Implementation Method 1
the proportional valve to control the gas flow behavior
Implementation Method 2
a gas flow sensor in the gas passage line
Implementation Method 3
a pressure sensor connected to the exit point
Implementation Method 4
The equipment has a Wi-Fi antenna that enables connection to an external server
Data Source
AI summary
The electronic regulating system for protective gas flow applied to welding equipment with connectivity interface, the subject of this invention, comprises regulating equipment (100) for gas flow equipped with a system that monitors parameter data in real-time. These parameters include open arc time, utilized gas flow, gas volume, electric current, electric voltage, wire feed speed, and total accumulated wire. The monitoring, process control, data storage, and production tracking are performed entirely online. The regulating equipment (100) consists of an electronic board (10) for data processing and a set of sensors that read the relevant process variables, sending signals to the equipment's process microcontroller.