| 摘要 |
The invention relates to an installation for extinguishing fire in a unit, preferably a train with at least one railway carriage, or a tunnel, the installation comprising several spray heads (3) whereof a number that is smaller than the total number of spray heads can be activated according to the location of the fire in the unit, and a drive source (5) for delivering extinguishing medium through a pipe system (4) to the activated spray heads. In order to provide a powerful and increased delivery of extinguishing medium from the active spray heads in such a case that only some of the spray heads in the installation are released, the installation is characterized by the drive source comprising a pump unit including a pump (50) in order to provide a pumping pressure for pumping extinguishing medium into the activated spray head/heads, the pump unit comprising a control unit (52, 53) arranged to increase the extinguish medium flow of the pump unit when the number of releasing spray heads increases in such a way that the effect of the pump unit is at least mainly kept constant. |
