SAFETY FRACTURE DIAPHRAGM WITH A KNIFE FOR LIMITING THE PRESSURE OF A FLUID

摘要

Safety device for limiting the pressure of a fluid, having at least one hollow modular member, which is open at both ends, a diaphragm closing one end, and a knife mounted within the modular member facing the diaphragm at a regulatable distance from it. The device also has a piston for making the knife strike the diaphragm in order to bring about bursting before this would be done by deformation of the diaphragm under the effect of a given pressure. The knife may have a pointed central lip bordered by two leading lips so as to reliably bring about bursting of the diaphragm.