Full-automatic multi-intelligent gas distribution system

The working principle of the fully automatic multiple intelligent gas distribution system equipment: the high purity air (N2), O2, CH4 and CO2 are randomly configured according to the required test proportion, and the built-in gas distribution type program is used to start the gas distribution with one key to meet the needs of different experimental gas mixtures. The system is debugged and operated when the equipment is equipped with an analyzer to detect and verify the mixing ratio, fine-tune the data input of the mass flowmeter relative to the required ratio, and complete the series of actions and the storage of the gas distribution flow and type. The equipment is equipped with a touch screen to select the working state and display the working process. PLC controls the solenoid valve, gas mass flow meter and pressure transmitter to work. The pressure regulating valve is used to regulate the gas pressure required during the test.

The gas distribution system of the fully automatic multiple intelligent gas distribution system: the fully automatic multiple gas distribution equipment with the mass flow transmitter imported from Japan as the main body is used, and the self-compiled program is completed in the PLC. Under the control of the pressure sensor and pneumatic valve, the mass flow meter calculates the output flow of each gas, and the data is transmitted to the mass flow transmitter to strictly control the injection volume of other gases, ignoring the raw gas pressure and flow changes, Accurate gas distribution is always obtained at the point of use of the mixture. A sampling and analysis interface is set at the output end of the mixture, which is externally connected to the analyzer or chromatograph for monitoring, to verify the content measured in the mixture. The touch screen completes the data collection, and all parameters are clearly visible. The gas distribution proportion is changed, and it is completed with one key, and stored with one key. The equipment has an interlock function to prevent misoperation. The data output end is equipped with a 485 interface, which can complete data remote transmission and remote control online.

The gas distribution cabinet of the fully automatic multiple intelligent gas distribution system adopts zoning equipment: the electrical part is fully closed and positive pressure design, the electrical control part inside the cabinet is separated from the gas distribution working area, the nitrogen inlet valve is automatically opened when the working power is connected, and the pressure relief valve is adjusted to slightly higher than the atmospheric pressure, so as to make the micro-positive pressure purging setting inside the cabinet, and the combustible gas detector is added on the top of the mechanical part of the equipment to detect the leakage of combustible gas in real time, Once there is a gas leakage, the level 2 alarm will be started, A will give an audible and visual alarm, and B will start the second set of procedures if the combustible gas content continues to rise. The combustible gas source will be cut off in an emergency, and the equipment will stop working until the alarm is eliminated. All alarms will be set to ensure the normal operation of the proportioner to the maximum extent. Under working conditions, it can be isolated from the outside of the case, and to a certain extent, it has explosion-proof and flameproof functions. Meet the requirements of safe production.