ZZYVP - 16 b nitrogen sealed the composition and working principle of pneumatic valve

nitrogen sealing device is made up of device for the nitrogen and nitrogen discharge device of two parts. For nitrogen device consists of two parts, pneumatic valve control device and the main; Nitrogen discharge device by the feedback of pressure micro pressure regulating pneumatic valve type. The nitrogen pressure generally set as mmHO, accurate control through nitrogen sealing device.
when the liquid storage tank into the pneumatic valve open, add material to the tank, the liquid level rising, gas phase partial volume decreases, and the pressure increases, when the tank pressure above its discharge nitrogen pressure setting device, discharge nitrogen device to open, release nitrogen to the outside world. Make the tank pressure drops, fell to release nitrogen pressure set-point, nitrogen discharge device automatically shut down.
when the tank is pneumatic valve is open, the user feeding, gas phase partial volume increases, the tank pressure is reduced, for the nitrogen plant opened, to inject nitrogen storage tank, the tank pressure rise, when the tank pressure rise to supply nitrogen device automatically shut down.