CA2328972A1

CA2328972A1 - Method and high-capacity apparatus for producing fire fighting foam and foam expanding spreading device

Info

Publication number: CA2328972A1
Application number: CA002328972A
Authority: CA
Inventors: Istvan Szocs
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-15
Filing date: 1999-04-15
Publication date: 1999-10-21
Anticipated expiration: 2019-04-15
Also published as: PL343511A1; CA2328972C; HU225201B1; PL189566B1; HRP20000779A2; WO1999052599A1; AU762141B2; NO333796B1; HK1034915A1; NO20005175D0; ZA200006454B; EP1075316A1; HU9800877D0; SK15522000A3; DE69938781D1; ES2310036T3; ATE395950T1; HUP9800877A2; HRP20000779B1; NO20005175L

Abstract

Method for producing fire fighting foam using a composition is prepared consisting of foaming agent, water and gaseous medium. The composition is prepared via dissolving or emulsifying the components in one another under overpressure, the composition prepared this way is stored under overpressure at the required place for the required period of time, transported if necessary maintaining the overpressure, and it is expanded via decompressing it on the spot and at the time of application. The apparatus for producing the fire fighting foam comprises a high-pressure foam source (10), a foam expanding spreading device (60) and a pressure resistant pipeline (40) connecting the high-pressure foam source (10) with the foam expanding spreading device (60). A foam expanding spreading device comprises an admission opening and a discharge mouth, a tubular distributing body (63) suitably forming a closed loop of tubes, preferably of torus shape, the discharge mouth, suitably a slit (65) or a set of holes, is situated on the nappe of the tube along its length, preferably along its generating line.

Claims

1. Method for producing fire fighting foam in course of which composition is prepared consisting of foaming agent, water and gaseous medium, characterised in that the composition is prepared via dissolving or emulsifying the components in one another under overpressure, the composition prepared this way is stored under overpressure at the required place for the required period of time, transported if necessary maintaining the overpressure, and it is expanded via decompressing it on the spot and at the time of application.

2. Apparatus for producing fire fighting foam characterised in that it comprises a high-pressure foam source (10), a foam expanding spreading device (60) and a pressure resistant pipeline (40) connecting the high-pressure foam source (10) with the foam expanding spreading device (60).

3. Apparatus according to claim 2 characterised in that there is a valve inserted in the pressure resistant pipeline (40) of it, preferably a remote controlled valve (42).

4. Apparatus according to claim 2 or claim 3 characterised in that the high-pressure foam source (10) has a high-pressure tank (22) containing the composition, and the pressure resistant pipeline (40) is connected to the opening of the tank (12) with a main vale (42) inserted.

5. Apparatus according to claim 2 or claim 3 characterised in that the high-pressure foam source (10) comprises a pressure resistant high-pressure tank (15) to contain water with foam generating gas absorbed in it, a foaming agent container. (17) anti a mixer (30), the pressure resistant high-pressure tank (15) is connected to one inlet of the mixer (30) with a stop-valve (32) inserted, and the foaming agent container (17) is connected to the other inlet of tree mixer (30), while the outlet of the mixer (30) is connected to the pressure resistant pipeline (40) directly or with a second valve inserted.

6. Apparatus according to claim 2 car claim 3 characterised in that the high-pressure foam source (10) comprises an absorbing vessel (35) and a liquid or gaseous foam generating gas container (19) connected to one inlet of the absorbing vessel (35) directly or with a pressure controller (37) inserted, a mixer (30) with a foaming agent container (17) connected to one of is inlets, the other inlet of the absorbing vessel (35) is fashioned in a way that it can be connected to a water supply, the outlet of the absorbing vessel (35) is connected to the other inlet of the mixer (30), and the outlet of the mixer (30) is connected to the pressure resistant pipeline (40).

7. Apparatus according to claim 2 or claim 3 characterised in that the high-pressure foam source (10) comprises an absorbing vessel (35) and a liquid or gaseous foam generating gas container (19) connected to one inlet of the absorbing vessel (35) directly or with a pressure controller (37) inserted, a mixer (30) with a foaming agent container (17) connected to one of its inlets, the other inlet of the mixer (30) is fashioned in a way that it can be connected to a water supply, the outlet of the mixer (30) is connected to the other inlet of the absorbing vessel (35), and the outlet of the absorbing vessel (35) is connected to the pressure resistant pipeline (40).

8. Apparatus according to claim 6 or claim 7 characterised in that the pressure resistant pipeline (40) branches and disconnecting valve (45, 46) is inserted in each branch of the pipeline (40).

9. Foam expanding spreading device to be used for discharging fire fighting foam onto large surface, characterised in that it comprises an admission opening and a discharge mouth, a tubular distribution body (63) suitably forming a closed loop, preferably of torus shape, the discharge mouth, suitably a slit (65) or a set of holes, is situated along the length of the tube.

10. Foam expanding spreading device according to claim 9 characterised in that the discharge mouth, suitably a slit (65) or a set of holes. is formed in a way that its site per unit length of the tube is growing according to the distance from the admission opening (62).

11. Foam expanding spreading device to be used for discharging fire fighting foam onto large surface, characterised in that it comprises an admission opening and a discharge mouth, a tubular distributing body (66) suitably forming a closed loop, preferably of torus shape, a suitably tubular high-pressure receiving chamber (67) preferably forming a closed loop, preferably of torus shape, mostly arranged in a way that the torus shaped distributing body (66) is concentrically surrounded by the torus shaped high-pressure receiving chamber (67), the distributing body (66) is connected to the high-pressure receiving chamber (67) with hydraulically balanced feeding, and the discharge mouth, suitably a slit (68) or a set of hole, is situated along the length of the tubular distributing body (66), and the admission opening (69) as the admission opening of the high-pressure receiving chamber (67).

12. Foam expanding spreading device to be used for discharging fire fighting foam onto a large surface of liquid filled in storage tank, characterised in that it comprises a tubing (80) which extends cover the centre of tank, the tubing has an admission end (81) which is able to join pressure resistant pipeline, the other end has a discharge mouth having larger size then admission opening, the discharge mouth is arranged in a position which is directed to the surface of liquid over and in the discharge mouth there are deflection plates to spread foam unuformly in the whole discharge mouth.

13. Foam expanding spreading device according to claim 12 characterised in that in the tubing there is an expansion tract (85).