Pneumatic membrane gasometer for the storage of hydrogen gas at low pressure

Pneumatic membrane gasometer for the storage of hydrogen gas at low pressure, comprising:

• a first bag-shaped membrane adapted to delimit a hydrogen storage chamber resting on a base surface;
• a second membrane adapted to partially delimit a pressurization chamber superimposed, at least in part, on said storage chamber;
• a third membrane, placed resting on top of said first membrane, fixed in an impermeable manner at least to said second membrane, adapted to delimit, coacting with said second membrane, said pressurization chamber and to define, with said first membrane, a cavity open towards the outside of said pneumatic gasometer;
• hydrogen supply and discharge means associated with said storage chamber;
• pressurization means of said pressurization chamber by mean of air, comprising fan means and valve means for regulating and exhausting the air contained in said pressurization chamber;
• mechanical anchoring means to said base surface of said first, second and third membranes;
• the pneumatic membrane gasometer further comprising a natural passive ventilation system, adapted to vent any hydrogen leaks towards the outside, comprising a duct adapted to connect said cavity to the outside environment passing through said pressurization chamber.