FIRE-FIGHTING FOAM DEVICE FOR GENERATING FIRE-FIGHTING FOAM, AND A METHOD FOR THE TESTING OF A FIRE-FIGHTING FOAM DEVICE

摘要

A fire fighting foam system (1) comprises a fire fighting water line (3) in which mixing means (5) are present to which a fire fighting foam supply line (7) is connected which is connected to a fire fighting foam storage tank (9). This fire fighting foam storage tank accommodates a balloon (11) containing the fire fighting foam. The fire fighting foam storage tank is connected via a branch line (13) to the fire fighting water line (3). The fire fighting foam system (1) further includes a first electromagnetic flow meter (15) which is located upstream of the mixing means (5) in the fire fighting water line (3), and a second electromagnetic flow meter (17) which is located in the fire fighting foam supply line (7). In the fire fighting foam supply line (7) is further located an electrically controllable control valve (19) which can reduce the flow rate of the fire fighting foam supply line. An electronic control unit (21) which is connected to the two flow meters (15) and (17) drives the control valve (19) if the proportion of the values measured by the two flow meters deviates too much from a preset limit value.