FIRE EXTINGUISHING SYSTEM

摘要

A fire extinguishing system including a fluid source, at least one sprinkler (2), and distribution pipes (3). The distribution pipes (3) are formed at least partially as soft-steel metal pipe having a friction loss defined according to the Hazen-Williams formula (1), with P=6.05105LQ1.85C(−-1.85)d(−4.87), in which P=pressure drop in the pipeline, in bar, Q=flow rate through the pipeline, in l/min, d=average inside diameter of the pipe, in mm, C=constant for the type and condition of the pipeline, and L=equivalent length of pipe sections and pipe fittings, in m. The distribution pipes (3) have an anti-corrosion coating on the inside in order to ensure a value for C in a range of 125 to 150 during commissioning of the fire extinguishing system.

主权项

1. A fire extinguishing system for distributing an extinguishing medium, at least comprising:
means (1) for providing the extinguishing medium, at least one means (2) for applying the extinguishing medium, transport means (3) for connecting the means (1) for providing the extinguishing medium to the at least one means (2) for applying the extinguishing medium,wherein the transport means (3) are at least partially in the form of mild steel metal pipe,
wherein the pipe friction loss in pipes is defined in accordance with the Hazen-Williams formula (1) with
P=6.05105LQ1.85C(−1.85)d(−4.87) wherein: P=pressure drop in the pipe, in bars, Q=through-flow rate through the pipe, in l/min, d=mean inside diameter of the pipe, in mm, C=constant for type and condition of the pipe, and L=equivalent length of pipe and shaped portions, in m, wherein
the transport means (3) which are at least partially in the form of mild steel metal pipe have an at least inwardly disposed corrosion protection coating, andthe inwardly disposed corrosion protection coating is adapted to ensure a value for C in a range of 125 to 150 when the fire extinguishing system is commissioned.