Gas Analysis for Soldering Gas Distribution

At present, the mixture gas is more used as the protective gas in industry, which greatly improves the welding quality, and welding speed, and reduces the splash and manpower cost. In order to accurately control the welding quality, it is necessary to analyze the gas concentration of each mixture gas in real time and accurately.

The mixed gas mixing cabinet, also known as gas proportioning device, is a large-flow two-element or multi-element gas mixing device specially designed for gas protection, which is mainly used for the matching of the central gas supply bus and the bus, and the device can mix two or more gases needed to be used according to the requirements of use, and obtain uniform mixed gas. The invention can be widely applied to various mixed gas protection occasions such as railway, ship, chemical industry, mechanical manufacturing, air conditioning and fresh keeping, electric light source, leak detection (alarm), disinfection and sterilization, etc.

Working Principle

The two-element or multi-element gas which needs to be mixed enters a two-stage or multi-stage pressure balancing device through a one-way valve, and the input pressure difference is balanced, thereby ensuring that the pressure of the component gas and the diluted gas before mixing is absolutely the same, and then the flow control valve is adjusted, and the flow rate of various gases can be adjusted according to the desired mixing ratio. In principle, the dynamic gas mixing method is adopted, namely mixing is used, thereby ensuring the uniformity of the mixed gas, having excellent reproducibility and stable proportion.

For the above mixed gases, Chang Ai Company provides solutions for the analysis of various gas concentrations:

0~50%/30% CO2, the rest of argon, CO2 concentration needs to be measured, mainly using the infrared measurement principle（NDIR, None-Dispersive Infra-Red）

0~50% CO2, the rest of nitrogen, CO2 concentration needs to be measured, mainly use the infrared measurement principle（NDIR,None-Dispersive Infra-Red）

0~50% Ar and the rest He gas need to measure the concentration of He gas. The principle of heat conduction is mainly used (TCD,Thermal Conductivity Detection)

0~2% O2, the rest Ar, O2 concentration needs to be measured. The measurement principle of 3D ion flow is mainly used.（3D Limiting Current Type Oxygen Analyzer）

0~10% H2, the rest Ar, H2 concentration needs to be measured. The principle of thermal conductivity measurement is mainly used. (TCD,Thermal Conductivity Detection)

0~20% oxygen, the rest argon, need to measure the concentration of O2, mainly use the ion flow measurement principle（3D Limiting Current Type Oxygen Analyzer）

0~5% oxygen, 0~15% carbon dioxide, the rest argon gas, need to measure the concentration of argon and O2 at the same time, mainly use the ion flow measurement principle（3D Limiting Current Type Oxygen Analyzer）/（NDIR,None-Dispersive Infra-Red）

0-50% argon, the rest helium, no

Gas Analysis For Soldering Gas Distribution