EP0979125B1 - Procedes et dispositifs de suppression d'explosion - Google Patents

Procedes et dispositifs de suppression d'explosion Download PDF

Info

Publication number
EP0979125B1
EP0979125B1 EP98917456A EP98917456A EP0979125B1 EP 0979125 B1 EP0979125 B1 EP 0979125B1 EP 98917456 A EP98917456 A EP 98917456A EP 98917456 A EP98917456 A EP 98917456A EP 0979125 B1 EP0979125 B1 EP 0979125B1
Authority
EP
European Patent Office
Prior art keywords
pressure
arrangement according
suppressant
explosion
powder
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
EP98917456A
Other languages
German (de)
English (en)
Other versions
EP0979125A1 (fr
Inventor
Peter Moore
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.)
Kidde Fire Protection Ltd
Original Assignee
Kidde Fire Protection Ltd
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 Kidde Fire Protection Ltd filed Critical Kidde Fire Protection Ltd
Publication of EP0979125A1 publication Critical patent/EP0979125A1/fr
Application granted granted Critical
Publication of EP0979125B1 publication Critical patent/EP0979125B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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

Definitions

  • the invention relates to an explosion suppression arrangement for suppressing explosions within a protected area, comprising containing means for containing unpressurised explosion suppressant material and having a suppressant outlet normally closed by frangible means, a source of pressure operative when activated to produce a pressure output, and pressure applying means for applying the pressure output to the explosion suppression material so as to pressurise the suppressant material and so break the frangible means to cause discharge of the suppressant material through the suppressant outlet.
  • the explosion suppression arrangement as first set forth above is characterised in that the suppressant material is in powder form and in that the pressure applying means comprises pressure distribution means positioned within the containing means so as to be located within the explosion suppressant material therein, the distribution means having a plurality of pressure outlets distributed at different positions within the explosion suppressant material in the containing means.
  • the explosion suppressant arrangement 1 of Figures 1 and 2 is mounted on one wall 10 of an area to be protected 12 such as a room or a large volume used in an industrial process, for example, a grain drying silo, vat or anywhere where the circumstances are such that an explosion might start and must be suppressed within a matter of milliseconds.
  • the explosion suppressant arrangement comprises a container 14 which is attached to the outside of the wall 10 of the area 12 to be protected.
  • a normally closed opening 16 is situated between the container 14 and the area to be protected 12.
  • the container contains explosion suppressant material. In a manner to be explained in more detail, upon detection of an explosion in the area 12, the material is discharged into the area and suppresses the explosion.
  • the explosion suppressant material 18 is a powder such as mono-ammonium phosphate or sodium hydrogen carbonate.
  • the pressure source 20 in this example is a pyrotechnic gas generator.
  • the pyrotechnic gas generator 20 is provided with a system of outlet tubes 22 which extend from the pyrotechnic gas generator 20 into the body of the powder 18.
  • the outlet 16 to the protected area 12 is closed by a frangible aluminium foil diaphragm 24. It will be appreciated that any other suitable form of frangible material may be used to close the outlet 16.
  • a dispersing device 25 is mounted adjacent to the diaphragm 24, inside the container 14.
  • a pressure detector 26 is positioned to be responsive to the pressure in the protected area 12 and is connected to an activating device 27 for the pyrotechnic gas generator 20 (e.g. by suitable electrical connector 28). It will be appreciated that any suitable form of explosion detector may be used in place of the pressure detector 26.
  • the dispersing device 27 can be mounted within the container 14. Because of this, and also because the gas generator 20 is mounted inside the container 14, the whole apparatus is self-contained and can be simply secured in any suitable way to an opening formed in the wall of the protected area.
  • the dispersing device In explosion suppression arrangements in which the outlet is relatively small, the dispersing device must be mounted outside the outlet and inside the protected area. In these cases, some sort of mounting bracket or connection means has to be used, making assembly of the arrangement much more difficult.
  • the powder 18 As the gas generator 20 is located within the body of the powder 18, the powder 18 is fluidized when the pyrotechnic gases are generated, thus avoiding compaction, and also cooling the gases. In this way, the powder is ejected through the outlet 16 in the form of sprayed particles accompanied by the cooled gas. As the gas is cooled by being injected into the body of the powder 18, its pressure is rapidly reduced, thus avoiding any significant increase of the pressure within the protected area 12. However, the pressure is still sufficient to break the diaphragm 24 and to eject the powder into the protected area 12.
  • the arrangement is thus advantageous over arrangements in which the pyrotechnically generated gas is applied from outside the container to the powder which can cause the powder to be ejected into the protected area in the form of a "plug" of compacted powder, followed by a quantity of hot gas.
  • the plug of powder will not suppress the explosion so well as sprayed particles.
  • the interior of the container 14 is slightly pressurized (e.g. to 0.2 bar above-atmospheric pressure) by means of a suitable pressure source 29.
  • a pressure detector 30 monitors the pressure within the container 14 and produces a warning signal if the presure within the container falls as a result of failure of the diaphragm 24 (or for any other reason).
  • the pyrotechnic gas generator is replaced by an external source 31 of stored pressurized gas, which is connected by a valve 32 to the network of outlet pipes 22 located within the body of the powder 18 inside the container 14.
  • the pressure detector 26 is connected to the valve 32.
  • a signal 28 is sent to open the valve 32. Once the valve 32 is open, the pressurized gas within the external source 31 is released into the network of outlet pipes and hence into the body of the powder 18 in the container 14. The gas acts to fluidize the powder 18 and to increase the pressure within the container 14 as previously described. Once the pressure has reached a predetermined level, the diaphragm 24 will break and the powder will be dispersed into the protected area 12 by the dispersing device 25.
  • the arrangement of Figure 3 may be provided with means for monitoring the integrity of the diaqphragm 24 similar to that provided for the embodiment of Figure 2.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Air Bags (AREA)

Claims (16)

  1. Agencement de suppression d'explosions pour supprimer des explosions à l'intérieur d'une zone protégée, comprenant un moyen à conteneur pour contenir un matériau (18) non pressurisé de suppression des explosions et présentant une sortie (16) d'agent de suppression normalement fermée par des moyens (24) aptes à se rompre, une source de pression (20, 31) qui, lorsqu'elle est activée, opère pour produire une sortie de pression, et un moyen (22) d'application de pression pour appliquer la sortie de pression au matériau (18) de suppression des explosions de manière à pressuriser le matériau (18) de suppression des explosions et d'ainsi rompre le moyen (24) apte à se rompre pour amener la décharge du matériau de suppression (18) par la sortie (16) de matériau de suppression, caractérisé en ce que le matériau de suppression se présente sous forme de poudre et en ce que le moyen d'application comprend un moyen (22) de répartition de pression disposé à l'intérieur du moyen à conteneur (14) de manière à être situé à l'intérieur du matériau (18) de suppression des explosions, le moyen de répartition (22) présentant dans le moyen à conteneur (14) une pluralité de sorties de pression réparties en différentes positions à l'intérieur du matériau (18) de suppression des explosions.
  2. Agencement selon la revendication 1, caractérisé en ce qu'à l'intérieur du moyen à conteneur (14), le moyen de répartition (22) comporte une pluralité de conduits situés en différentes positions à l'intérieur du matériau (18) de suppression des explosions, chaque conduit ayant une extrémité reliée pour recevoir la sortie de pression et présentant à son autre extrémité une sortie de pression correspondante.
  3. Agencement selon la revendication 1 ou 2, caractérisé en ce que la source de pression (20) est montée à l'intérieur du moyen à conteneur (14).
  4. Agencement selon la revendication 3, caractérisé en ce que la source de pression (20) est un générateur (20) de gaz pyrotechnique.
  5. Agencement selon la revendication 1 ou 2, caractérisé en ce que la source de pression (31) est montée à l'extérieur du moyen à conteneur (14).
  6. Agencement selon l'une quelconque des revendications précédentes, caractérisé par des moyens de dispersion (25) pour diriger le matériau de suppression (18) lorsqu'il est déchargé par la sortie (16) d'agent de suppression.
  7. Agencement selon la revendication 6, caractérisé en ce que le moyen de dispersion (25) est monté à l'intérieur du moyen à conteneur (14).
  8. Agencement selon l'une quelconque des revendications précédentes, caractérisé en ce que la superficie de la section transversale de la sortie (16) d'agent de suppression n'est pas essentiellement inférieure à la superficie de la section transversale du moyen à conteneur (14) en position immédiatement adjacente à la sortie (16) d'agent de suppression.
  9. Agencement selon l'une quelconque des revendications précédentes, caractérisé en ce que la sortie de pression est un gaz sous pression.
  10. Agencement selon l'une quelconque des revendications précédentes, caractérisé par des moyens de détection (29, 30) pour détecter une fuite de matériau de suppression hors du moyen à conteneur (14).
  11. Agencement selon la revendication 10, caractérisé en ce que le moyen de détection comprend un moyen (29) pour maintenir normalement l'intérieur du moyen du conteneur (14) à une pression légèrement différente de la pression atmosphérique, et un moyen de surveillance.
  12. Agencement selon l'une quelconque des revendications précédentes, caractérisé en ce que la poudre est une quelconque poudre ABC appropriée de suppression des explosions.
  13. Agencement selon la revendication 12, caractérisé en ce que la poudre est du phosphate de monoammonium.
  14. Agencement selon la revendication 12, caractérisé en ce que la poudre est de l'hydrogénocarbonate de sodium.
  15. Agencement selon l'une quelconque des revendications précédentes, caractérisé en ce que le moyen apte à se rompre est un diaphragme (24).
  16. Agencement selon la revendication 15, caractérisé en ce que le diaphragme (24) est un formé à partir d'aluminium.
EP98917456A 1997-04-24 1998-04-23 Procedes et dispositifs de suppression d'explosion Expired - Lifetime EP0979125B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9708276 1997-04-24
GB9708276A GB2324466B (en) 1997-04-24 1997-04-24 Explosion suppression arrangements and methods
PCT/GB1998/001192 WO1998047572A1 (fr) 1997-04-24 1998-04-23 Procedes et dispositifs de suppression d'explosion

Publications (2)

Publication Number Publication Date
EP0979125A1 EP0979125A1 (fr) 2000-02-16
EP0979125B1 true EP0979125B1 (fr) 2002-06-26

Family

ID=10811263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98917456A Expired - Lifetime EP0979125B1 (fr) 1997-04-24 1998-04-23 Procedes et dispositifs de suppression d'explosion

Country Status (4)

Country Link
EP (1) EP0979125B1 (fr)
DE (1) DE69806241T2 (fr)
GB (1) GB2324466B (fr)
WO (1) WO1998047572A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2350294B (en) * 1999-05-28 2002-10-30 Graviner Ltd Kidde Fire extinguishing and explosion suppression arrangements and methods
GB2458674A (en) * 2008-03-27 2009-09-30 David William Fuller Fire extinguishing device
EP2153872A1 (fr) 2008-07-23 2010-02-17 Total Petrochemicals Research Feluy Procédé pour remédier aux conséquences d'une explosion de nuage de vapeur confiné partiellement ou entièrement
CN102716564A (zh) * 2012-06-14 2012-10-10 山西新思备科技有限公司 管道用产气式瓦斯抑爆器
GB2536631B (en) * 2015-03-22 2019-12-04 Graviner Ltd Kidde Fire suppressant apparatus
GB2537414B (en) * 2015-04-17 2019-11-13 Graviner Ltd Kidde Pyrotechnic valve
RU2626810C1 (ru) * 2016-07-08 2017-08-01 Владимир Александрович Парамошко Способ взрывного безводного пожаротушения с замедлением начала взрыва после выдёргивания чеки взрывателя-детонатора

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB236848A (en) * 1924-09-25 1925-07-16 Heinriche Fitte Improvements in and relating to fire extinguishers
DE4224184C2 (de) * 1992-07-22 1994-05-05 Deugra Ges Fuer Brandschutzsys Löschmittelbehälter
US5423384A (en) * 1993-06-24 1995-06-13 Olin Corporation Apparatus for suppressing a fire
BE1008056A3 (nl) * 1994-02-01 1996-01-03 Stuvex Int Nv Inrichting voor het onderdrukken van industriele explosies.
US5660236A (en) * 1994-07-21 1997-08-26 Kidde Technologies, Inc. Discharging fire and explosion suppressants
DE19544399C2 (de) * 1995-11-29 1997-09-18 Bayern Chemie Gmbh Flugchemie Löschgerät zur Explosionsunterdrückung
CA2194525A1 (fr) * 1996-01-17 1997-07-18 Matthew Alan Cox Appareil d'extinction a eau
BE1010421A3 (fr) * 1996-07-12 1998-07-07 Delta Extinctors S A Dispositif de mise sous pression d'appareil de lutte contre l'incendie a cartouches pyrotechniques rechargeables generatrices de gaz et extincteur muni d'un tel dispositif.

Also Published As

Publication number Publication date
EP0979125A1 (fr) 2000-02-16
WO1998047572A1 (fr) 1998-10-29
GB2324466A (en) 1998-10-28
GB2324466B (en) 2001-02-28
DE69806241D1 (de) 2002-08-01
DE69806241T2 (de) 2003-02-27
GB9708276D0 (en) 1997-06-18

Similar Documents

Publication Publication Date Title
US5660236A (en) Discharging fire and explosion suppressants
RU2595990C2 (ru) Способы и устройство для многоступенчатой системы пожаротушения
US6189624B1 (en) Actuating mechanism for fire extinguisher
CA1317852C (fr) Appareil de lutte contre les incendies et les explosions
CN101072605B (zh) 用于增加灭火瓶中加压气体的效率的装置
US3858659A (en) Fire extinguisher apparatus
EP0979125B1 (fr) Procedes et dispositifs de suppression d'explosion
WO1991008022A1 (fr) Extincteur
CN113209520A (zh) 洁净型非储压灭火器
US4763731A (en) Fire suppression system for aircraft
CA2282028A1 (fr) Engin de lutte contre l'incendie a deroulement et enroulement ameliores des tuyaux
US3604511A (en) Method and apparatus for quenching fires and suppressing explosions
GB2159707A (en) Rapid discharge extinguisher
US5291952A (en) Extinguishing agent container
US6581878B1 (en) Airborne fire fighting system
CA1307926C (fr) Dispositif anti-explosion et composition correspondante
EP0693303A2 (fr) Déchargement d'un agent suppresseur de feu ou d'explosion
JPH07236705A (ja) 産業火災の鎮火装置
JP3353213B2 (ja) コンテナの消火装置
JP2686837B2 (ja) アキュムレータの拡張式ヒューズ安全装置
JPH0584318A (ja) ナトリウム−硫黄電池における消火装置
GB2359487A (en) Fire extinguishing or security device
US4098220A (en) Alarm
CN111437553A (zh) 一种灭火装置及其消防容器
CN215309869U (zh) 洁净型非储压灭火器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19991111

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE

17Q First examination report despatched

Effective date: 20000901

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE

REF Corresponds to:

Ref document number: 69806241

Country of ref document: DE

Date of ref document: 20020801

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030327

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20080616

Year of fee payment: 11

BERE Be: lapsed

Owner name: *KIDDE IP HOLDINGS LTD

Effective date: 20090430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090430

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120425

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131101

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69806241

Country of ref document: DE

Effective date: 20131101