EP1552860B1 - Système d'extinction de feu à mousse - Google Patents

Système d'extinction de feu à mousse Download PDF

Info

Publication number
EP1552860B1
EP1552860B1 EP03405902A EP03405902A EP1552860B1 EP 1552860 B1 EP1552860 B1 EP 1552860B1 EP 03405902 A EP03405902 A EP 03405902A EP 03405902 A EP03405902 A EP 03405902A EP 1552860 B1 EP1552860 B1 EP 1552860B1
Authority
EP
European Patent Office
Prior art keywords
tube
cage
foam
slot
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03405902A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1552860A1 (fr
Inventor
Claude Ciocca
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE60330170T priority Critical patent/DE60330170D1/de
Priority to ES03405902T priority patent/ES2335982T3/es
Priority to AT03405902T priority patent/ATE448837T1/de
Priority to EP03405902A priority patent/EP1552860B1/fr
Priority to SI200331734T priority patent/SI1552860T1/sl
Priority to PCT/CH2004/000725 priority patent/WO2005058424A1/fr
Publication of EP1552860A1 publication Critical patent/EP1552860A1/fr
Application granted granted Critical
Publication of EP1552860B1 publication Critical patent/EP1552860B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/02—Making of fire-extinguishing materials immediately before use of foam
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam

Definitions

  • the present invention relates to fire protection installations. More particularly, it relates to a fire extinguishing system using a foam that is particularly well adapted to fighting fires in large confined spaces, such as tunnels, car parks or warehouses.
  • a fire-fighting facility in a large space must also be capable of responding, in a targeted manner, to several fires separated from each other, which is frequent during a fire or when, in a tunnel, a first fire causes chain collisions and new fires. It is therefore vital that the installation intervenes at this location and is not prematurely out of extinction means because it has exhausted too quickly its resources on the first fire.
  • the main object of the present invention is to provide an improved version of a foam extinguishing system which can equip not only the aforementioned installation but also any existing installation, whether automatic or manual.
  • the figure 1 represents very schematically, seen from the ground, a portion of the vault of a road tunnel equipped with an installation using a foam extinguishing system according to the invention.
  • the installation proposed by way of non-limiting example is divided into sectors of twenty to thirty meters, each comprising a watering tube 10 disposed under the tunnel roof, parallel to the axis AA of the sector concerned, and equipped with foam extinguishing nozzles 12 arranged every three meters or so. These nozzles are directed towards the ground and, in the example shown, aligned along the axis AA.
  • the installation also comprises a mixer 14 whose inlet E1 is connected to a single pipe of pressurized water 16 running through the tunnel and whose inlet E2 is connected to an emulsifier tank 18 via a control valve 20.
  • the output S of the mixer 14 is connected to the irrigation tube 10 via a control valve 22.
  • the tube 10 is of circular section. Its diameter is typically between 25 and 150 mm and its length is that of the sector, that is to say from twenty to thirty meters in the example described.
  • the nozzles 12 each consist of a slot 24 formed in the wall of the tube 10 at the vertical axis AA and parallel thereto and a device 26, called foam expansion cage, disposed in front of the slot.
  • the length thereof is between 60 and 100 mm and its width is about 0.2 to 1 mm depending on the water supply and foam flow required for extinction.
  • the expansion cage 26 is formed of an upper wall 28, a lower wall 30 and an intermediate wall 32, made by means of a mesh made of stainless steel or plastic whose mesh is between 1 and 3 mm.
  • the upper wall 28 has a triangular section whose ridge faces the slot 24 parallel to it and is disposed about 1 mm from it.
  • the angle at the apex of the triangle is between 110 and 130 °, while its base has substantially the same dimension as the diameter of the tube 10.
  • the lower wall 30 is curved, with a center substantially coincident with that of the tube 10. Its base has the same dimension as that of the upper wall 28.
  • the flat intermediate wall 32 ensures the connection between the upper wall 28 and the lower wall 30. It will be noted that it extends beyond its junction with the upper wall 28 by a portion 34 which ends at the from the edge of it. The distance between the edge and the furthest point of the bottom wall 30 is typically between 30 and 50 mm.
  • the walls of the cage 26 are advantageously joined by welding or stapling.
  • the edge of the upper wall 28 is extended at both ends by a tongue 36 which is welded to a collar 38 which fits around the tube and hangs thereon by means of a loop 40 and a hook 42.
  • control valve 22 In operation, when a fire is detected, by any means whatsoever, the control valve 22 is opened manually or automatically. A mixture of water and emulsifier whose content, typically from 2 to 5%, was previously adjusted by the regulating valve 20, is sent into the irrigation tube 10.
  • the slot 24 creates a powerful jet directed on the edge of the upper wall 28. This jet enters the cage 26 and invades it while generating a suction stream which returns air intimately mixing with the particles of liquid.
  • the mixture then passes through the intermediate wall 32 and the bottom wall 30 with a still sufficient pressure to confine the emulsion and produce a dense foam and heavy enough to cover the floor of the tunnel without being driven by drafts.
  • the projected jet of water and foam concentrate is sufficiently deviated so that foam is also produced above the cage 26 and passes through the upper portion 34 of the intermediate wall 32, thus adding to the foam ejected from the cage.
  • the cage 26 also has the effect of diverting the jet of foam by 90 °. It is likely that this deviation is due to Coriolis forces.
  • the foam forms a screen whose plane is substantially perpendicular to the longitudinal axis of the tunnel and which flaps and absorbs the fumes of the fire.
  • K an experimental shape coefficient, characteristic of the nozzle
  • P the pressure of the mixture in the tube 10
  • f the expansion coefficient defined as the ratio between the volume of foam produced and the volume of liquid.
  • the objective of this installation is to produce a thickness of 15 cm of foam per minute and per square meter, evenly distributed on the pavement of the tunnel. This thickness is sufficient to extinguish most fires.
  • the water flow must therefore be 1034 L / min.
  • the installation may comprise two or three parallel tubes distributed under the vault.
  • each nozzle may have a plurality of slots centered on the crown edge of the triangle of the cage, for example, three 0.2 mm slots separated by 2 mm.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Fire-Extinguishing Compositions (AREA)
EP03405902A 2003-12-17 2003-12-17 Système d'extinction de feu à mousse Expired - Lifetime EP1552860B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE60330170T DE60330170D1 (de) 2003-12-17 2003-12-17 Schaum-Feuerlöschsystem
ES03405902T ES2335982T3 (es) 2003-12-17 2003-12-17 Sistema de extincion de fuego con espuma.
AT03405902T ATE448837T1 (de) 2003-12-17 2003-12-17 Schaum-feuerlöschsystem
EP03405902A EP1552860B1 (fr) 2003-12-17 2003-12-17 Système d'extinction de feu à mousse
SI200331734T SI1552860T1 (sl) 2003-12-17 2003-12-17 Gasilni sistem s peno
PCT/CH2004/000725 WO2005058424A1 (fr) 2003-12-17 2004-12-09 Systeme d’extinction d’incendie a mousse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03405902A EP1552860B1 (fr) 2003-12-17 2003-12-17 Système d'extinction de feu à mousse

Publications (2)

Publication Number Publication Date
EP1552860A1 EP1552860A1 (fr) 2005-07-13
EP1552860B1 true EP1552860B1 (fr) 2009-11-18

Family

ID=34585931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03405902A Expired - Lifetime EP1552860B1 (fr) 2003-12-17 2003-12-17 Système d'extinction de feu à mousse

Country Status (6)

Country Link
EP (1) EP1552860B1 (sl)
AT (1) ATE448837T1 (sl)
DE (1) DE60330170D1 (sl)
ES (1) ES2335982T3 (sl)
SI (1) SI1552860T1 (sl)
WO (1) WO2005058424A1 (sl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016212391B4 (de) * 2016-07-07 2019-06-13 Fabrik chemischer Präparate von Dr. Richard Sthamer GmbH & Co KG Schaumwassersprinkler

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592269A (en) * 1968-12-09 1971-07-13 Howard C Stults Self-contained foam fire extinguishing system
SE501805C2 (sv) * 1993-10-25 1995-05-15 Svenska Skum Ab Förfarande vid släckning av brand i öppna eller slutna utrymmen samt anordning för utövande av förfarandet
DE19539991C1 (de) * 1995-10-27 1997-02-27 Preussag Ag Minimax Schaumwassersprinkler
EP1310273A1 (fr) 2001-11-13 2003-05-14 Claude Ciocca Installation d'extinction d'incendie à mousse

Also Published As

Publication number Publication date
WO2005058424A1 (fr) 2005-06-30
EP1552860A1 (fr) 2005-07-13
SI1552860T1 (sl) 2010-02-26
ATE448837T1 (de) 2009-12-15
ES2335982T3 (es) 2010-04-07
DE60330170D1 (de) 2009-12-31

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