Rapid-action valve for a pressurized extinguishing fluid container, and extinguishing fluid container comprising same

A quick-opening valve for an extinguishing fluid vessel, comprising:

• an extinguishing fluid inlet disposed along an inlet axis,
• an extinguishing fluid outlet disposed along an outlet axis,
• a flow chamber which extends from the extinguishing fluid inlet to the extinguishing fluid outlet,
• a valve piston disposed in a piston chamber,
• a valve seat, wherein the valve piston is movable back and forth between an opened-up position and a shut-off position such that the valve piston and the valve seat, in the shut-off position, bear against one another in fluid-tight fashion and, in the opened-up position, are spaced apart from one another such that the extinguishing fluid inlet and the extinguishing fluid outlet are fluidically connected to one another, and
• a piston housing in which the valve piston is mounted so as to be movable, wherein the piston housing is arranged in the flow chamber so as to be flowed around by extinguishing fluid when the valve piston is in the opened-up position,
• wherein the inlet axis of the extinguishing fluid inlet and the outlet axis of the extinguishing fluid outlet are substantially aligned to one another,
• wherein the valve piston comprises a hollow valve piston that, in the shut-off position, fluidically connects the extinguishing fluid inlet and the piston chamber,
• wherein the hollow valve piston defines a central flow passage having a central axis aligned with the inlet axis of the extinguishing fluid inlet,
• wherein, in the piston housing, there is provided an overpressure line which extends from the extinguishing fluid inlet to the extinguishing fluid outlet and which is closed off with respect to a passage of fluid by an overpressure safety device, and
• wherein the overpressure line is designed to discharge the overpressure in fluid communication with the extinguishing fluid outlet after triggering of the overpressure safety device,
• wherein the overpressure safety device is a rupturing element, which is arranged in a section of the overpressure line.