WO2001074452A2 - Verfahren zur unterdrückung anlaufender explosionen - Google Patents
Verfahren zur unterdrückung anlaufender explosionen Download PDFInfo
- Publication number
- WO2001074452A2 WO2001074452A2 PCT/DE2001/001259 DE0101259W WO0174452A2 WO 2001074452 A2 WO2001074452 A2 WO 2001074452A2 DE 0101259 W DE0101259 W DE 0101259W WO 0174452 A2 WO0174452 A2 WO 0174452A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- extinguishing agent
- gas
- extinguishing
- gas generator
- suppressing
- Prior art date
Links
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
Definitions
- the invention relates to a method for suppressing incipient explosions using an extinguishing device, in the housing (8) of which a pyrotechnic gas generator (1) and a container (5) of an extinguishing agent (6) closed with bursting membranes (3, 4) are provided, wherein the extinguishing agent (6) is ejected with the help of the compressed gas generated by the gas generator (1) and distributed to the side by the gas jet following at the speed of sound and is also accelerated forward.
- extinguishing agent preferably powder
- constant pressure containers that blow the extinguishing agent into the space to be protected if necessary via a quick opening valve.
- a corresponding nozzle is used for uniform distribution, especially for the lateral spreading of the extinguishing agent, which usually has the shape of a slotted hemisphere or one with several holes (see company publication "HRD-Systems", June 1995, company Total Walther Feuerschutz GmbH).
- fire extinguishing systems consist of a gas generator arranged in series, an extinguishing agent container and an outlet opening.
- these devices are not suitable for suppressing a starting explosion.
- the reaction In the event of an explosion, the reaction must take place in the time range of a few milliseconds in order for the explosion to occur, i.e. H. effectively combat the pressures typical of an explosion.
- US 870,479 describes an extinguishing agent cartridge in which a central charge is triggered with the aid of freely installed ignition cords.
- the triggering follows only by means of an open fire, a reaction to an incipient explosion is fundamentally not possible. Powder atomization is only suitable for fighting fire.
- No. 5,305,957 proposes to equip an extinguishing device with a liquid extinguishing agent, a long, tubular acceleration section and a gas generator with a low delivery pressure of approximately 10 bar. Although a high exit velocity of the extinguishing agent is achieved, the lateral spread of the extinguishing agent jet remains low and the droplet decay only takes place at a greater distance in front of the device due to the velocity-dependent air resistance. This extinguishing device is therefore only suitable for point-specific fire fighting.
- DE 195 44 399 C2 from the applicant describes an arrangement which is fundamentally suitable as an extinguishing device for suppressing explosions. However, there is no indication of how the extinguishing result can be optimized using the known design.
- the object is achieved in a simple manner by the features of the extinguishing method set out in claim 1.
- Advantageous refinements result from the features of the subclaims.
- the extinguishing method according to the invention makes it possible, for the first time, to generate a liquid dust cloud filling this volume within less than 15 msec in a limited space, such as a storage room or a container, if the pressure increase typical for a starting explosion was detected by means of a suitable sensor.
- the explosion is thus intercepted and suppressed well before its maximum formation. This effectively prevents major damage such as the destruction of the container or room to be protected and the fire spreading after the explosion.
- the figure shows schematically simplified the basic structure of the extinguishing device on which the method according to the invention is based.
- a pyrotechnic gas generator 1 which can be initiated via an ignition line 7 is provided in a housing 8 which has the shape of a tube section.
- This gas generator enables sufficient gas generation within the short period of time required for the extinguishing process.
- it is necessary to achieve the maximum power of the gas generator within less than 15 msec, preferably in 10 msec, at which a gas delivery rate of 1 kg / sec is achieved.
- the burning time of the gas generator is about 30 msec. Only with the gas temperatures that occur can the required high volume flows be generated with a relatively low gas mass.
- the gas generated by the gas generator 1 flows into a buffer volume 2, which from the housing 8, the gas generator 1 and the first bursting membrane 3 of the Extinguishing agent container 5 is enclosed.
- the generated gas is stored in the buffer volume 2 up to a maximum pressure of 30-50 bar, preferably about 40 bar.
- the bursting threshold of the first bursting membrane 3 is reached, which is designed in such a way that the curved central area of the membrane first buckles in the ejection direction 11 and at the same time shears the membrane over the entire circumference of its edge.
- the second bursting membrane also shears off in the same way, so that the extinguishing agent 6 is acted upon uniformly over the entire cross section by the pressure which has arisen.
- the entire extinguishing agent is transported as a unit via the aperture 10 of the housing 8 in the ejection direction 11. The process of atomizing the liquid extinguishing agent 6 in the free space only begins immediately after the aperture 10.
- the lateral extent of the extinguishing agent cloud in this phase is three to four times the extent in the ejection direction 1 1.
- the extinguishing agent cloud is then increasingly accelerated in the axial direction, which is accompanied by a significant increase in the speed of propagation in the ejection direction 1 1.
- a permanent pressure vessel is not required. This makes the extinguisher very compact. The maintenance and testing effort is significantly reduced.
- the assembly takes place by means of a flange 9 in an opening of the container or space to be protected. If a non-toxic gas is generated by the gas generator according to the invention and water 6 is used as the extinguishing agent, use in occupied rooms or in the storage area of food is also possible.
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)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SK1161-2002A SK11612002A3 (sk) | 2000-04-04 | 2001-03-31 | Spôsob potláčania začínajúcich explózií a zariadenie na vykonávanie tohto spôsobu |
US10/240,286 US6868915B2 (en) | 2000-04-04 | 2001-03-31 | Method for suppressing developing explosions |
HU0300197A HUP0300197A2 (en) | 2000-04-04 | 2001-03-31 | Method for supressing developing explosions |
EP01931390A EP1268003A2 (de) | 2000-04-04 | 2001-03-31 | Verfahren zur unterdrückung anlaufender explosionen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10016738.1 | 2000-04-04 | ||
DE10016738A DE10016738B4 (de) | 2000-04-04 | 2000-04-04 | Verfahren zur Unterdrückung anlaufender Explosionen |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001074452A2 true WO2001074452A2 (de) | 2001-10-11 |
WO2001074452A3 WO2001074452A3 (de) | 2002-03-21 |
Family
ID=7637563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/001259 WO2001074452A2 (de) | 2000-04-04 | 2001-03-31 | Verfahren zur unterdrückung anlaufender explosionen |
Country Status (7)
Country | Link |
---|---|
US (1) | US6868915B2 (de) |
EP (1) | EP1268003A2 (de) |
CZ (1) | CZ20022692A3 (de) |
DE (1) | DE10016738B4 (de) |
HU (1) | HUP0300197A2 (de) |
SK (1) | SK11612002A3 (de) |
WO (1) | WO2001074452A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009147139A2 (de) * | 2008-06-03 | 2009-12-10 | Steur, Martijn | Vorrichtung und verfahren zum impuls-ausstoss von medium |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060086511A1 (en) * | 2004-10-26 | 2006-04-27 | Tanguay J F | Automatic fire extinguisher |
DE102007014908A1 (de) * | 2007-03-26 | 2008-10-02 | Rembe Gmbh Safety + Control | Vorrichtung gegen die Ausbreitung von Explosionen, insbesondere Staubexplosionen |
CN101637637B (zh) * | 2009-06-08 | 2011-12-07 | 陕西坚瑞消防股份有限公司 | 一种热气溶胶灭火装置 |
US8333246B2 (en) * | 2010-05-25 | 2012-12-18 | Hanratty Associates | Hydro-pneumatic extinguisher |
CN104147735A (zh) * | 2013-05-14 | 2014-11-19 | 陕西兰德森茂消防科技有限公司 | 燃气发生器 |
CN110420427A (zh) * | 2019-07-16 | 2019-11-08 | 浙江南都电源动力股份有限公司 | 全氟己酮自动灭火系统及其工作方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US870479A (en) | 1906-11-03 | 1907-11-05 | Shirley Q Stanley | Fire-extinguisher. |
US2383048A (en) | 1941-08-02 | 1945-08-21 | Jr James C Eckert | Fire extinguisher |
US5305957A (en) | 1989-01-04 | 1994-04-26 | Szoecs Istvan | Process and apparatus for the fine dispersion of liquids or powders in a gaseous medium |
DE19544399C2 (de) | 1995-11-29 | 1997-09-18 | Bayern Chemie Gmbh Flugchemie | Löschgerät zur Explosionsunterdrückung |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2838122A (en) * | 1954-05-13 | 1958-06-10 | Hutchinson Harold | Fire extinguishing pistols |
US3897828A (en) * | 1974-05-31 | 1975-08-05 | John A Glover | Method and apparatus for actuating an operating means for an automatic fire extinguishing apparatus |
US4062288A (en) * | 1975-03-03 | 1977-12-13 | Allied Chemical Corporation | Initiator for tire inflator |
FR2565495B1 (fr) * | 1984-06-08 | 1989-02-17 | Abg Semca | Extincteur a decharge rapide |
AU2898092A (en) * | 1992-09-22 | 1994-04-12 | Zahmatov, Vladimir Dmitrievich | Fire extinguishing device |
US5449041A (en) * | 1993-06-24 | 1995-09-12 | Olin Corporation | Apparatus and method for suppressing a fire |
US5423384A (en) * | 1993-06-24 | 1995-06-13 | Olin Corporation | Apparatus for suppressing a fire |
US5660236A (en) * | 1994-07-21 | 1997-08-26 | Kidde Technologies, Inc. | Discharging fire and explosion suppressants |
WO1998039064A1 (de) * | 1997-03-04 | 1998-09-11 | Nebel, Anita | Explosive feuerlöschvorrichtung |
US5992528A (en) * | 1997-04-17 | 1999-11-30 | Autoliv Asp, Inc. | Inflator based fire suppression system |
GB2350294B (en) * | 1999-05-28 | 2002-10-30 | Graviner Ltd Kidde | Fire extinguishing and explosion suppression arrangements and methods |
DE19934164C2 (de) * | 1999-07-21 | 2003-12-24 | Bayern Chemie Gmbh Flugchemie | Löschgerät |
DE19951886C2 (de) * | 1999-10-28 | 2003-12-18 | Bayern Chemie Gmbh Flugchemie | Löschgerät |
-
2000
- 2000-04-04 DE DE10016738A patent/DE10016738B4/de not_active Expired - Fee Related
-
2001
- 2001-03-31 CZ CZ20022692A patent/CZ20022692A3/cs unknown
- 2001-03-31 US US10/240,286 patent/US6868915B2/en not_active Expired - Fee Related
- 2001-03-31 WO PCT/DE2001/001259 patent/WO2001074452A2/de active Application Filing
- 2001-03-31 EP EP01931390A patent/EP1268003A2/de not_active Withdrawn
- 2001-03-31 HU HU0300197A patent/HUP0300197A2/hu unknown
- 2001-03-31 SK SK1161-2002A patent/SK11612002A3/sk unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US870479A (en) | 1906-11-03 | 1907-11-05 | Shirley Q Stanley | Fire-extinguisher. |
US2383048A (en) | 1941-08-02 | 1945-08-21 | Jr James C Eckert | Fire extinguisher |
US5305957A (en) | 1989-01-04 | 1994-04-26 | Szoecs Istvan | Process and apparatus for the fine dispersion of liquids or powders in a gaseous medium |
DE19544399C2 (de) | 1995-11-29 | 1997-09-18 | Bayern Chemie Gmbh Flugchemie | Löschgerät zur Explosionsunterdrückung |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009147139A2 (de) * | 2008-06-03 | 2009-12-10 | Steur, Martijn | Vorrichtung und verfahren zum impuls-ausstoss von medium |
WO2009147139A3 (de) * | 2008-06-03 | 2010-04-29 | Steur, Martijn | Vorrichtung und verfahren zum impuls-ausstoss von medium |
EA019407B1 (ru) * | 2008-06-03 | 2014-03-31 | Штойр, Мартейн | Устройство и способ импульсного выброса среды |
US9283576B2 (en) | 2008-06-03 | 2016-03-15 | Martijn Steur | Device and method for impulse ejection of medium |
Also Published As
Publication number | Publication date |
---|---|
DE10016738B4 (de) | 2004-03-11 |
US6868915B2 (en) | 2005-03-22 |
CZ20022692A3 (cs) | 2003-04-16 |
SK11612002A3 (sk) | 2003-06-03 |
US20030127234A1 (en) | 2003-07-10 |
WO2001074452A3 (de) | 2002-03-21 |
DE10016738A1 (de) | 2001-10-18 |
HUP0300197A2 (en) | 2003-05-28 |
EP1268003A2 (de) | 2003-01-02 |
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