INTEGRATED SAFETY DEVICE FOR SELF-PROPULSION GAS SYSTEMS

摘要

A safety device for a cylinder holding gaseous fluids under pressure is disclosed. The safety device has a device body in which a passage is defined for a fluid; the passage extends from an entry aperture, suitable for being placed in fluidic communication with a cylinder, to an exit aperture. An obturator air tightly engages the passage, the obturator is movable from a first position, in which it indicates the presence of fluid at a pressure below a first predefined pressure threshold value, inside the cylinder, and a second position, in which it indicates the presence of fluid at a pressure above the first predefined pressure threshold value inside the cylinder. At least one temperature and/or pressure-sensitive relief device is positioned in the obturator in such a way that, upon exceeding a predefined temperature threshold or upon exceeding a second predefined pressure threshold, the relief device opens the passage for the fluid and permits the flow of fluid from the entry aperture towards the exit aperture.

主权项

1. A safety device for a cylinder holding gaseous fluids under pressure, comprising:
a device body, in which a passage is defined for a fluid, said passage extending from an entry aperture, suitable for being placed in fluidic communication with said cylinder, to an exit aperture; an obturator airtightly engaging said passage and acting in a continuous manner depending on the fluid pressure, said obturator being movable from a first position, in which it indicates the presence of fluid at a pressure below a first predefined pressure threshold value inside said cylinder, and a second position, in which it indicates the presence of fluid at a pressure above said first predefined pressure threshold value inside said cylinder; at least one temperature and/or pressure-sensitive relief device positioned in said obturator in such a way that, upon exceeding a predefined temperature threshold or upon exceeding a second predefined pressure threshold, said relief device opens the passage for the fluid and permits the flow of fluid from said entry aperture towards said exit aperture independently of the position of the movable obturator; said safety device being characterized in that said exit aperture is open towards the outside environment and wherein the obturator has a head which engages said exit aperture in such a way that when the obturator is in the rearward position, said head is hidden from sight, whereas when the obturator is in the advanced position, said head is visible from the outside.