Automated stepless adjustment with gas mixing device
First, the working principle;
This device is hydrogen by mass flow controller regulates mixed with nitrogen, hydrogen and nitrogen stable mixture having a certain percentage. On-demand adjustment.
Second, the major equipment components and functions;
A mass flow controller,
2 hydrogen partial instrument;.
3 smart display regulator.
4 mixing tank;
5 ratio meter;
6 explosion-proof pressure controller.
7 pressure controller,
Third, the process;
In Fig. (See flowchart), the original hydrogen through the hydrogen inlet valve, a mass flow controller regulates the introduction of nitrogen, a gas mixture through the mixing tank mix, the mixture was analyzed by the hydrogen partial mixed, showing the percentage of hydrogen content , the percentage of the hydrogen partial hydrogen content analyzer into an electrical signal, the intelligent display regulator hydrogen iNSTRUMENT current signal is compared with a set value calculation, the calculation result is converted into an electric signal and the mass flow controllers, so as to regulate the gas mixture proportional function stable gas mixture to the point of use through the work of the outlet valve when the gas flow rate change with a device to adjust the mass flow controllers, changing the hydrogen flow is the flow of the mixture changes. ensure that the pressure in the gas mixture within a certain range