Orbital Welding Oxygen Measurement with Centralized Sensor Switching
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Solution Overview
Problem
Existing orbital welding devices face challenges with inflexible and difficult oxygen measurement processes, particularly in measuring oxygen concentrations in protective gas before it is introduced into the welding chamber or pipe sections.
Innovation Solution
An orbital welding device with an integrated oxygen sensor located on the welding power source housing, allowing for centralized measurement of oxygen concentrations in protective gas before and after introduction into the chamber or pipe sections, and featuring a switching device to alternate measurement states, enabling simultaneous measurement at multiple locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the oxygen sensor is arranged in the welding power source housing, then the ease of operation is improved and handling is simplified, but the measurement precision may be affected due to distance from measurement locations
Solution Approach 1:
A switching device is introduced as an intermediary component that enables the oxygen sensor to measure at multiple locations (chamber and pipe interior) by sequentially connecting the sensor to different measurement points through switching operations, thus resolving the contradiction between centralized sensor placement and distributed measurement needs
Solution Approach 2:
The oxygen sensor in the power source housing is designed to perform multiple measurement functions at different locations through the switching device, allowing a single sensor to serve multiple measurement purposes (shielding gas quality check and chamber/pipe oxygen concentration measurement)
2Measurement precision
If multiple oxygen sensors are used to measure at different locations simultaneously, then the measurement precision and coverage are improved, but the device complexity increases
Solution Approach 1:
Multiple measurement functions are merged into a single oxygen sensor system by using a switching device that sequentially connects the one sensor to different measurement locations, eliminating the need for multiple separate sensor systems and reducing overall device complexity
Solution Approach 2:
The measurement system is made dynamic through the switching device that can switch between different measurement states (measuring at chamber location vs. pipe interior location), allowing a static sensor placement to achieve dynamic multi-location measurement capability
3Adaptability or versatility
If the oxygen sensor is positioned at various locations during the welding process, then the adaptability is improved, but the ease of operation deteriorates due to cumbersome handling
Solution Approach 1:
The switching device acts as an intermediary that provides adaptability for measuring at different locations while keeping the sensor fixed in the power source housing, thus maintaining ease of operation while achieving measurement flexibility
Solution Approach 2:
The measurement function is segmented into different measurable parameters at different locations (shielding gas oxygen concentration, chamber oxygen concentration, pipe interior oxygen concentration), with the switching device enabling selection between these segmented measurement functions from a single sensor position
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 simplifies oxygen concentration measurement, improves handling, and ensures accurate gas quality assessment, allowing for cost-effective comprehensive oxygen measurement and quality control of welded connections.
Implementation Method 1
the oxygen sensor (40), preferably for measuring an oxygen concentration in the shielding gas
Implementation Method 2
the oxygen sensor and an optical coupling into the chamber (50), which optically couples the optical oxygen sensor to the interior of the chamber (50), in such a way that the oxygen concentration can be measured in the chamber (50)
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
Orbital welding device (1) for welding two pipe sections, wherein the orbital welding device (1) comprises a welding power source (10) in a welding power source housing (11) and an orbital welding head (20) separate from the welding power source housing (11) and connected to the welding power source (10) by means of a cable (2), wherein the orbital welding head (20) comprises a chamber (50) for the use of shielding gas (50) and/or the orbital welding device (1) comprises a forming device (90) for the use of shielding gas, preferably root shielding gas or forming gas, wherein the orbital welding device (1) comprises an oxygen sensor (40), wherein the oxygen sensor (40) is arranged in or on the welding power source housing (11).