Dispositif électropneumatique d'ouverture rapide d'un réservoir de gaz pressurisé.

摘要

The valve has a shutter (3) which is movable under the action of a double stage jack (9). The jack includes a lower chamber (8b) at the level of a first stage piston communicating with the reservoir (1) by means of an inflation electrovalve (22). A bottle of compressed gas (18) communicates via a safety electro valve (19) with a small chamber (23) defined by the lower part of the jack forming a second piston stage (14), and the lower extension (16) of the valve body (6). A guide disc (12) separates the lower chamber (8b) from an upper chamber (8a) inside the valve body, inside which there is a return spring (21). The body of the valve serves as the seating for the valve shutter (3) as well as the channel conveying gas through a large cross-section passage to the double stage jack.