| 摘要 |
The invention relates to an installation for fighting fire, the installation comprising a number of spray heads (330a, 380a), a pipe system (381) for leading extinguishing medium to the spray heads, the spray heads comprising a holder body having an inlet for incoming extinguishing medium, at least one nozzle and a cover locked in a protective position in front of said nozzle when the installation is in an inactive mode and, arranged to be displaceabl e upon activation of the installation to a released position by release of the locking, in which released position the cover is clear of said nozzle so that the nozzle may spray extinguishing medium when the spray head is in an active mode. In order to be able to use the installation in conditions in which it can be strongly exposed to dirt and impurities and in order that it will not be activated on account of the spray heads of the installation being exposed to impacts or heat not coming from the seat of the fire, the installation is characterized in that the spray heads (330a, 380a) comprise a displaceable device which is arranged to be displaced by the effect of pressure of a fluid in relation to the holder body and thus exert a force on a locking so that it releases the cover.
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