EP2683449A1 - Dispositif d'extinction d'incendie declenche - Google Patents
Dispositif d'extinction d'incendie declencheInfo
- Publication number
- EP2683449A1 EP2683449A1 EP12712331.3A EP12712331A EP2683449A1 EP 2683449 A1 EP2683449 A1 EP 2683449A1 EP 12712331 A EP12712331 A EP 12712331A EP 2683449 A1 EP2683449 A1 EP 2683449A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas generator
- reservoir
- liquid
- bag
- cap
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 239000012528 membrane Substances 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 65
- 230000008961 swelling Effects 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 241001573881 Corolla Species 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 239000007888 film coating Substances 0.000 claims description 2
- 238000009501 film coating Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- HHBBIOLEJRWIGU-UHFFFAOYSA-N 4-ethoxy-1,1,1,2,2,3,3,4,5,6,6,6-dodecafluoro-5-(trifluoromethyl)hexane Chemical compound CCOC(F)(C(F)(C(F)(F)F)C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)F HHBBIOLEJRWIGU-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
- A62C3/08—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles in aircraft
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/02—Portable extinguishers which are permanently pressurised or pressurised immediately before use with pressure gas produced by chemicals
- A62C13/22—Portable extinguishers which are permanently pressurised or pressurised immediately before use with pressure gas produced by chemicals with incendiary substances producing pressure gas
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
- A62C3/10—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles in ships
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/023—Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas
Definitions
- the invention relates to the field of fire extinguishing devices by pressurizing a reservoir containing a quenching liquid. It relates more particularly to a device for supplying such an extinguishing liquid to circulate this liquid in an expulsion circuit provided with sprinkling liquid spray elements, directed towards a fire center.
- the devices of the invention are particularly suitable for being embarked as fire extinguishers on variable-height mobile platforms, such as airplanes, boats, submarines ...
- variable-height mobile platforms such as airplanes, boats, submarines ...
- a liquid reservoir comprising, instead of the piston, a deformable membrane which separates the chamber filled with liquid from that containing the gas generator.
- This type of device is advantageous because the inside of the tank does not need to be machined accurately to accommodate a piston sliding tightly.
- the membrane is floating in the tank and attached to the inner wall and / or gas generator tank, which is a difficulty of assembly.
- the gas generator is of the pyrotechnic generator type where the gases are from the combustion of a load, in situ, it is necessary to control the emission of hot gas to prevent it damaging the membrane.
- a deflector can be mounted around the gas outlets of the gas generator to limit the impact of the jet on the membrane.
- EP 1 782 861 does not describe a concrete solution to this problem.
- the devices of the two patents FR 2 905 454 and EP 1 782 861 are designed to operate "vertically", the gas generator being arranged in the upper part vis-à-vis the liquid ejection orifice in the lower part, gravity also contributing to the ejection of the liquid.
- the direction of the gas jet emanating from the generator is directed (directly or through a deflector) down towards the liquid ejection port.
- the invention makes it possible to achieve all these objectives.
- the invention relates mainly to a device for supplying a fire extinguishing liquid for an expulsion circuit of said liquid, comprising:
- said membrane forms an inflatable bag sealingly connected to a gas outlet of said gas generator, said bag being folded, before release of said gas generator, in a confinement space delimited by a cap and defined in said reservoir at the front of the gas generator and in that said gas outlet is associated with a baffle comprising a generally annular and rearwardly directed ejection pipe.
- the terms “front” and “rear” are to be considered by referring to the direction of expulsion of the liquid.
- the gas generator is necessarily at the rear of the tank and the expulsion outlet is at the front of the same tank.
- said gas generator is enclosed in a rigid containment enclosure comprising a base attached to the tank and a cover provided with at least one ring of exhaust holes, said baffle comprising an annular piece fixed to said cover and provided with a rear skirt surrounding said ring of holes to define said rearward-facing discharge pipe.
- the gas generator is a pyrotechnic gas generator emitting combustion gases, for example as described in patent FR 2 905 454.
- the arrangement of the deflector as defined above has the effect of causing the bag to begin to swell while progressing towards the rear and consequently by moving firstly the liquid situated at the rear of the reservoir, c that is to say all around the gas generator. It is thus ensured that a certain amount of liquid does not remain trapped at the rear of the tank, by the bag itself during its deployment.
- the opening of said bag is fixed to the outer surface of the lid along a connecting line located between the base and the ejection pipe.
- the bag and the gas generator form a same subset in the tank, before tripping.
- said gas generator and said bag are enclosed, before triggering, in a aforesaid cap with a ruptible wall, connected to said base to define said confinement space.
- the cap is a thin casing advantageously provided with incisions favoring its corolla burst, towards the rear.
- the rupture and deformation of the cap contribute to a better expulsion of the liquid located at the rear of the tank.
- This cap may be thin metal or flexible material such as an elastomer. It can, in this case include an outer metal film coating, protection. It can be heat sealed to the outer wall of the gas generator.
- the reservoir comprises a generally cylindrical body and fastening means able to position said body approximately horizontally.
- the liquid does not fill the entire available space in the tank, to account for the expansion of the liquid in the operating temperature range. Air therefore remains above the liquid in the reservoir arranged approximately horizontally.
- said gas generator is attached to a first end wall of the reservoir, in an axial direction relative to said cylindrical body and said expulsion outlet is defined at the bottom of said cylindrical body in the vicinity of a second opposite end wall of the tank.
- the air bag has at least two compartments separated by a flow restriction system for priority swelling of the compartment closest to said ejection tubing.
- the device can be characterized in that the two compartments in the folded state are retained against each other by a ruptible connection extending along a non-closed line and essentially located in the lower part of the tank.
- This ruptible connection can be a simple sewing of the compartments of the bag, between them.
- the device described above is well suited for the use of high density extinguishing liquid having a high efficiency for extinction while evaporating without constituting a danger for the ozone layer.
- a liquid may be for example a non-flammable hydrofluoroether.
- Such a liquid is, for example, 2-trifluoromethyl-3-ethoxydodecafluorohexane sold under the name HFE 7500 NOVEC by the company 3M.
- the invention also relates to any extinguisher or extinguishing system implementing the device defined above. More generally it also relates to a mobile platform, variable trim, using such a device. In particular, the invention also relates to an aircraft provided with at least one fire extinguisher using such a device.
- FIG. 1 is a general schematic view in elevation and in section of a device according to the invention, before tripping;
- FIG. 2 is a diagrammatic view of the detail of the liquid expulsion system, before triggering;
- FIG. 3 is a view similar to FIG. 1, illustrating the operation at the beginning of an expulsion phase of the liquid
- FIG. 4 is a view similar to FIG. 3 showing the state of the system at the end of this expulsion phase.
- FIG. 5 is a schematic detail view along an arrow V of Figure 2 showing a rupturable temporary junction of two compartments of the bag, before triggering.
- a feeding device 11 of a fire extinguishing liquid connected to an expulsion circuit 12 of the extinguishing liquid.
- This circuit is connected to one or more sprayers oriented towards a subset that may constitute a fire, such as for example an aircraft reactor.
- the device 11 comprises a reservoir 14 containing the extinguishing liquid 15, a gas generator 17 for delivering a pressurized gas, installed in the reservoir and a bag-shaped membrane 19 installed in the reservoir to push the liquid 15 towards a expulsion outlet 21 of the reservoir, connected to the circuit 12, under the action of the gas emitted by the gas generator. More specifically, the expulsion outlet 21 is arranged at a front end of the tank while the gas generator is installed at a rear end of the same tank.
- the gas generator 17 is a pyrotechnic gas generator emitting, when triggered, a hot combustion gas.
- This type of generator, electrically triggered, is conventional and will not be described in detail.
- FIG. 2 it can be seen that it consists essentially of a charge of a solid fuel 25 enclosed inside a perforated metal casing 26 which is itself enclosed in a rigid confinement chamber 28. The ignition the charge is electrically tripped via an electrical connector 27.
- the reservoir comprises a generally cylindrical body 29 extended by the two end walls 22, 23 hemispherical.
- Fastening means 31 are welded to the outside of the tank. In FIG. 1, these fixing means are arranged so that the reservoir is positioned approximately horizontally.
- the gas generator is attached to a first end wall 23 (the rear wall) of the reservoir in an axial direction relative to the cylindrical body.
- the expulsion outlet 21 is defined at the bottom of a second opposite end wall 22 (the front wall) of the tank.
- the extinguishing liquid occupies most of the available space in the tank, but does not completely fill it to account for the possible expansion of the liquid, depending on the temperature. Therefore, the upper part of the tank contains air. The level of liquid extends above the gas generator which is therefore, before trigger-iment, completely immersed in the extinguishing liquid.
- the bag 19 is inflatable connected. It is sealingly connected to a gas outlet 35 of said gas generator. This bag 19 is folded, before triggering of the gas generator 17, in a confinement space defined in the tank 14 at the front of the gas generator 17.
- the gas generator 17 and the bag 19 are locked, before triggering, in a cap 39 ruptible wall. It is a thin metal envelope provided with incisions 40 favoring its corolla burst, towards the rear, from the beginning of the swelling of the bag 19. An opening of the cap can be heat-sealed to the outer wall of the generator. gas 17, that is to say here at the edge of the base 41.
- the gas generator 17 is enclosed in the rigid enclosure 28 which comprises a base 41 fixed to the reservoir and a cover 42 provided with a crown of exhaust holes 44.
- the gas outlet 35 comprises these exhaust holes 44. It is therefore defined in the side wall of the enclosure 28.
- This gas outlet 35 is associated with a deflector 47 defining with the rigid enclosure an ejection pipe 49 generally annular and rearward oriented.
- the baffle 47 forms an annular piece attached to the lid 42. It has a rear skirt 51 surrounding said ring of holes 44 to define the ejection pipe 49 facing rearwardly.
- the opening of the bag 19 is fixed to the outer surface of the lid 42, by means of an annular flange 56, along a junction line situated between the base 41 and the ejection pipe 49. The bag 17 thus begins to swell around and behind the ejection pipe 49.
- the air bag 19 comprises at least two compartments 60, 61 separated by a flow restriction system allowing a priority swelling of the compartment 60 closest to
- the two compartments are separated by a wall 62 provided with calibrated holes 63, able to delay the swelling of the front compartment 61 relative to the rear compartment 60.
- the two compartments 60, 61 in the folded state are held against each other by a ruptible connection extending along an unclosed line and essentially located in the lower part of the tank.
- this ruptible connection may be constituted by a seam 65, for example in an arc substantially parallel to the edge of the bag 19 in the folded state.
- This seam serves to promote the swelling of the rear compartment 60 of the bag first to the upper rear of the tank 14, to better repel the liquid in this area and therefore prevent some of this liquid remains trapped between the inner wall of the tank and the outer wall of the rear compartment 60 of the bag 17.
- the operation is as follows.
- the device 11 After installation, the device 11 is arranged substantially horizontally as illustrated in FIG. 1, the gas generator 17 and the air bag 19 are enclosed, before being triggered in the ruptible-walled cap 39.
- the assembly projects into the interior of the tank 14, axially, from the rear end thereof. These elements are immersed in the liquid but protected by the cap 39, waterproof.
- the rear compartment 60 When the rear compartment 60 is sufficiently inflated to cause the breakage of the seam, the latter is pressed against the entire rear wall 23 of the tank hemispherical and continues forwardly axially axially, while the front compartment 61 begins also to inflate as and when the flue gas enters it being delayed by the vents between said compartments.
- the assembly continues its progression while pushing the liquid towards the expulsion outlet 21 until all the liquid is pushed back into the circuit 12 and sprayed on the fire.
- the hot gas has completed deploying the air bag 19, the latter is pierced with respect to the internal orifice of the expulsion outlet 21, in particular, so that the liquid remaining in the circuit 12 ends up being repelled by hot gas under pressure, resulting from combustion.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1151967A FR2972360B1 (fr) | 2011-03-10 | 2011-03-10 | Dispositif d'extinction d'incendie declenche |
PCT/FR2012/050461 WO2012120233A1 (fr) | 2011-03-10 | 2012-03-06 | Dispositif d'extinction d'incendie declenche |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2683449A1 true EP2683449A1 (fr) | 2014-01-15 |
EP2683449B1 EP2683449B1 (fr) | 2015-01-21 |
Family
ID=45930899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12712331.3A Active EP2683449B1 (fr) | 2011-03-10 | 2012-03-06 | Dispositif d'extinction d'incendie declenche |
Country Status (5)
Country | Link |
---|---|
US (1) | US9808661B2 (fr) |
EP (1) | EP2683449B1 (fr) |
BR (1) | BR112013022991A2 (fr) |
FR (1) | FR2972360B1 (fr) |
WO (1) | WO2012120233A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2615971C1 (ru) * | 2015-12-17 | 2017-04-11 | Леонид Олегович Дубрава | Устройство для объемного тушения пожара |
CN105617580A (zh) * | 2016-03-10 | 2016-06-01 | 浙江胄天科技股份有限公司 | 一种基于气囊驱动常压液体灭火剂的消防灭火器 |
US10238902B2 (en) * | 2016-09-07 | 2019-03-26 | The Boeing Company | Expulsion of a fire suppressant from a container |
RU167825U1 (ru) * | 2016-09-14 | 2017-01-10 | Общество с ограниченной ответственностью "Техномаш СПб" | Модуль пожаротушения тонкораспылённой жидкостью |
US20180221695A1 (en) * | 2017-02-09 | 2018-08-09 | Fike Corporation | Silent fire suppression system |
RU2649548C1 (ru) * | 2017-04-11 | 2018-04-03 | Леонид Олегович Дубрава | Устройство для объемного аэрозольного тушения пожара |
RU182438U1 (ru) * | 2017-12-14 | 2018-08-16 | Общество с ограниченной ответственностью "Эпотос-К" | Генератор модуля пожаротушения |
US20220331627A1 (en) * | 2019-09-12 | 2022-10-20 | A2Z Advanced Solutions Ltd. | Engine's anti-combustion method |
CN112604208B (zh) * | 2021-01-12 | 2022-02-18 | 宁波大学 | 一种预设火灾拦截灭火装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3388746A (en) * | 1966-09-26 | 1968-06-18 | John E. Lindberg | Aircraft fire prevention system |
FR2207885B1 (fr) * | 1972-11-23 | 1977-04-08 | France Etat | |
US4262749A (en) * | 1979-06-20 | 1981-04-21 | The United States Of America As Represented By The Secretary Of The Army | Fire suppression bladder system for fuel tanks |
US4319640A (en) * | 1979-12-06 | 1982-03-16 | The United States Of America As Represented By The Secretary Of The Army | Gas generator-actuated fire suppressant mechanism |
CZ281820B6 (cs) * | 1993-04-20 | 1997-02-12 | Alfa & Beta S. R. O. | Tlakový obal, zejména pro hasicí látky |
US20040216903A1 (en) * | 2003-04-15 | 2004-11-04 | Wierenga Paul H. | Hermetically sealed gas propellant cartridge for fire extinguishers |
FR2879107B1 (fr) * | 2004-12-09 | 2007-04-06 | Airbus France Sas | Dispositif pour augmenter l'efficacite du gaz de pressurisation dans une bouteille d'extincteur |
EP1782861A1 (fr) * | 2005-11-04 | 2007-05-09 | Siemens S.A.S. | Appareillage et méthode pour éteindre le feu avec générateur de gaz et moyen d'extinction |
FR2905454B1 (fr) * | 2006-09-01 | 2011-03-18 | Pyroalliance | Generateur de gaz pyrotechnique a regulation de pression et dispositif de propulsion de liquide l'incorporant dans sa structure |
CN101970311B (zh) * | 2007-08-28 | 2014-05-21 | 安堤格里斯公司 | 施配流体之装置及方法 |
FR2936715B1 (fr) | 2008-10-03 | 2011-01-14 | Airbus France | Dispositif d'ejection d'un fluide a etancheite renforcee |
FR2945453B1 (fr) * | 2009-05-14 | 2015-07-03 | Airbus France | Dispositif d'ejection d'un fluide. |
-
2011
- 2011-03-10 FR FR1151967A patent/FR2972360B1/fr active Active
-
2012
- 2012-03-06 EP EP12712331.3A patent/EP2683449B1/fr active Active
- 2012-03-06 WO PCT/FR2012/050461 patent/WO2012120233A1/fr active Application Filing
- 2012-03-06 US US14/004,385 patent/US9808661B2/en active Active
- 2012-03-06 BR BR112013022991A patent/BR112013022991A2/pt not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2012120233A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2012120233A1 (fr) | 2012-09-13 |
FR2972360B1 (fr) | 2013-04-05 |
EP2683449B1 (fr) | 2015-01-21 |
FR2972360A1 (fr) | 2012-09-14 |
US9808661B2 (en) | 2017-11-07 |
US20140069667A1 (en) | 2014-03-13 |
BR112013022991A2 (pt) | 2016-12-06 |
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