DE1175081B - Fire extinguishing system for extinguishing flammable substances, especially flammable liquids contained in containers - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Boarding school Class: A 62 c German class: 61 a-21/21

Number: 1175081

File number: V13853 V / 61 a

Filing date: February 15, 1958

Opening day: July 30, 1964

The invention relates to a fire extinguishing system for extinguishing combustible substances, in particular Flammable liquids contained in containers, by means of foam using around the Foam nozzles arranged around the source of the fire and attached above the combustible substances.

In known fire extinguishing systems of this type, which are used to extinguish combustibles contained in containers Serve liquids, the foam nozzles are arranged and designed and the extinguishing agent ίο fed to the foam nozzles with such a pressure that the foam on the container walls downwards flows and then spreads from the edge towards the middle of the container on the burning liquid. Here however, valuable time is lost until the burning liquid is completely covered with foam, since the foam is only under the effect of its own flow gradient and therefore only slowly spreads on the liquid. In addition, the foam suffers on the hot container walls or control systems high burn-off losses.

The invention aims to avoid these disadvantages, and is that the foam nozzles so are arranged that the nozzle axes on a circle assumed in the center above the seat of the fire run tangentially, and the extinguishing agent is supplied to the foam nozzles with such a pressure that a foam jet hits the previous one and thus in the center of the fire source a swirling movement of the foam is caused. This ensures that in At the center of the fire, a rotating mountain of foam is created, which is under the action of the Centrifugal force spreads very quickly on the surface of the burning substance. Then comes the Foam does not come into contact with any hot parts, so that burn-off losses of the foam are completely avoided are.

In an expedient embodiment of the invention, the foam nozzles are on the container walls fixed and adjusted so that they are all at the same height by preferably 9 ° after a Page are set up.

In the drawing, a fire extinguishing system according to the invention is shown in plan view as an exemplary embodiment shown schematically.

On the walls of a cylindrical container 1 containing a flammable liquid, foam nozzles 2 are arranged above the flammable liquid, evenly distributed over the circumference of the container 1, in such a way that the nozzle axes fire extinguishing system for extinguishing flammable
Substances, in particular in containers
contained flammable liquids

Applicant:

VEB fire extinguisher plant Apolda,

Apolda (Thuringia), Auenstr. 9

Named as inventor:

Hans Leypold, Apolda (Thür.),

Horst Nowak, Weimar

each at an angle 3 from the straight lines connecting the foam nozzles 2 with the center of the container differ and thus assumed to be in the center of the container 1 above the flammable liquid Circle tangential. In the event of a fire, the extinguishing agent is applied to the foam nozzles 2 supplied with such a pressure that, for example, to the left at the spray angle 4 from the Foam nozzles 2 exiting foam jets are directed so that the following on the right Foam jet hits the previous one and thus a swirl movement in the center of the fire source of the foam is caused. This creates a self in the center of the fire A mountain of foam that turns clockwise and moves very quickly under the effect of centrifugal force spreads on the surface of the burning liquid.

Claims (2)

Patent claims: 1. Fire extinguishing system for extinguishing flammable substances, especially those contained in containers flammable liquids, by means of foam using foam nozzles arranged around the source of the fire, the are mounted above the combustible materials, characterized in that the foam nozzles are arranged so that the The nozzle axes run tangentially on a circle assumed in the center above the seat of the fire, and the extinguishing agent with the foam nozzles 409 638/57 is supplied to such a pressure that in each case a jet of foam impinges on the preceding one and thus a swirl movement of the foam is caused in the center of the fire source. 2. Fire extinguishing system according to claim 1 for extinguishing flammable contained in containers Liquids, characterized in that the foam nozzles are firmly attached to the container walls are arranged. Documents considered: German Patent No. 855 805; British Patent No. 627,285; U.S. Patent Nos. 2,542,014, 1,307,614. 1 sheet of drawings «9 638/57 7.64 © Bundesdruckerei Berlin