EP1261396B1 - Inertisierungsverfahren mit stickstoffpuffer - Google Patents

Inertisierungsverfahren mit stickstoffpuffer Download PDF

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Publication number
EP1261396B1
EP1261396B1 EP01273102A EP01273102A EP1261396B1 EP 1261396 B1 EP1261396 B1 EP 1261396B1 EP 01273102 A EP01273102 A EP 01273102A EP 01273102 A EP01273102 A EP 01273102A EP 1261396 B1 EP1261396 B1 EP 1261396B1
Authority
EP
European Patent Office
Prior art keywords
oxygen
buffer
room
gas
target room
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
EP01273102A
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German (de)
English (en)
French (fr)
Other versions
EP1261396A1 (de
Inventor
Ernst Werner Wagner
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.)
Wagner Group GmbH
Original Assignee
Wagner Alarm- und Sicherungssysteme GmbH
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
Priority claimed from DE10121550A external-priority patent/DE10121550B4/de
Application filed by Wagner Alarm- und Sicherungssysteme GmbH filed Critical Wagner Alarm- und Sicherungssysteme GmbH
Publication of EP1261396A1 publication Critical patent/EP1261396A1/de
Application granted granted Critical
Publication of EP1261396B1 publication Critical patent/EP1261396B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide

Definitions

  • the invention relates to an inerting method for preventing and / or extinguishing fires in a closed space (hereinafter also referred to as "target space") in which a first Grundinert Deutschenspar is set by introducing an oxygen-displacing gas in the target space with reduced compared to natural proportions oxygen content and in which one or more different inerting levels with a further reduced oxygen content are or will be adjusted by further introducing, if necessary, stepwise or in case of fire sudden introduction of an oxygen displacing gas into the target space.
  • the invention further relates to an apparatus for carrying out the method with an oxygen measuring device in the target space and with a source of an oxygen-displacing gas.
  • the normal ambient air consists of 21% oxygen, 78% nitrogen and 1% other gases.
  • the nitrogen concentration in the target area further increased and thus reduces the oxygen content. It is known that a extinguishing effect starts when the oxygen content falls below a value of 15% by volume.
  • a further lowering of the oxygen content to the mentioned 12 vol.% Or lower may be required.
  • oxygen-displacing gases usually gases such as carbon dioxide, nitrogen, noble gases and mixtures thereof are used, which are usually stored in special ancillary rooms in steel bottles.
  • gases such as carbon dioxide, nitrogen, noble gases and mixtures thereof are used, which are usually stored in special ancillary rooms in steel bottles.
  • This object is achieved by an inerting process in which in a first step a) in a closed buffer space, which is connected via leads to the target space, by introducing an oxygen-displacing gas, a buffer gas volume is generated whose oxygen content is so low that when mixed the buffer gas volume with the room air in the target space a VollinertmaschinesRIC for an extinguishing operation can be achieved, and passed in a second step b) the buffer gas volume if necessary via the leads in the target area and there with mixing of the room air of the target space and the buffer gas volume for setting one of the first Grundinertmaschinesmillion different intertization levels is used.
  • the present invention is based on the consideration that the storage of the quenching gas, in particular because of the storage under pressure in special containers such as steel bottles, which require due to their weight and safety reasons again special premises, is problematic.
  • special containers such as steel bottles
  • special premises which require due to their weight and safety reasons again special premises.
  • a significant proportion of the premises are already separated for other use from the actually used by human and / or animal premises, the volume but only a small part Building installations such as Air conditioning systems, lighting and cable ducts are filled.
  • This buffer space may be in parts of the premises, e.g. Eisenendekken, raised floors, intermediate walls or adjacent equipment rooms arise, the walls of the buffer space can be fixed partitions or foils.
  • the oxygen content of the buffer space located in the buffer space, which is set in the first step a) of the presented method, is so low that after mixing the buffer gas volume with the room air of the target area, which at a GrundinertmaschinesRIC an oxygen concentration of about 17 vol. %, a full inertization level is set throughout the room which is below an oxygen concentration of 15% by volume for preventing and / or extinguishing fires.
  • Equation (5) thus specifies the necessary height ratio H N / H R between the buffer space and the target space if a specific oxygen concentration K NR as a full inertization level, a basic inertization level K R in the target space and an oxygen concentration K N in the buffer space is specified. Conversely, of course, from a predetermined ratio H N / H R can be concluded that the necessary oxygen concentrations.
  • a particular advantage of the method according to the invention is that a second Grundinertleitersset different from the first Grundinarchie istsmat with reduced oxygen content or the Vollinertmaschinesmul can be set for the erase mode.
  • the method is largely adaptable to the usage conditions of a building. For example, if a building complex is not used or entered by living beings during the night hours, lowering the base inerting level for daytime operation with an oxygen concentration of, for example, 17% by volume to a base inerting level for nighttime operation with an oxygen concentration of, for example, 15 vol.
  • the Vollinertmaschines for the extinguishing operation with an oxygen concentration below 15 vol .-% by supplying a corresponding amount of oxygen displacing gas from the buffer space very quickly a extinguishing effect can be achieved.
  • the second basic inerting level for the night operation as a preventive measure for fire prevention and, if necessary, deletion on weekends or holidays, at or in which a building is not used.
  • a possible fire is prevented in a preferred manner, or - deleted - as a result of a fire detection signal - when the mixing of the room air of the target space and the buffer gas volume is done so that due to the predetermined amount and concentration ratios of oxygen in both rooms, a mean oxygen concentration between 8 vol.% and 17 vol.% in the target room.
  • This can be done so that, initially in daytime operation, a basic inactivation level of e.g. 17 vol .-% is set, which is harmless to living beings present there.
  • a further lowered basic inertization level of e.g. 15 vol.% From which the full inerting level of e.g.
  • 11 Vol .-% is easily achieved by rapid supply of an oxygen-displacing gas from the buffer gas volume in the target area. Preventing the formation of fires by setting the basic daytime inerting level, reducing the oxygen concentration to the night-time base inerting level and, in the event of fire, to the full inerting level below, most of the materials used in the monitored premises are no longer flammable.
  • an oxygen content of the buffer volume of 10 vol .-% or less.
  • This concentration offers sufficient security against possible leakage of the buffer space, can be achieved by a corresponding aggregate and offers the most effective lowering effect of the basic inerting level on the Vollinertmaschinesmul with mixing of buffer gas volume and room air.
  • the buffer gas volume consists of a pure inert gas.
  • an oxygen-displacing gas for maximum reduction of the oxygen content of the air in the target area is available.
  • the buffer gas volume or the buffer gas volumes of buffers of another room or other rooms can be conducted via a supply line into the destination space. It is advantageous in this embodiment that in cases where several rooms of a building are equipped with a buffer, the inert gas from all buffers can be used to extinguish the fire in one of the rooms (target area).
  • the Vollinertmaschinesclude can be adjusted even in the rooms whose associated buffer gas volumes are dimensioned only for setting the respective Grundinertmaschinescludes. This ensures that even in such areas a possible fire can be effectively combated.
  • the object of the present invention is also achieved by a device for carrying out the described method with a closed buffer space which is adjacent to the target space and which is connected to the target space via gas feed lines.
  • a buffer gas volume is generated by introducing an oxygen-displacing gas whose oxygen content is so low that when a mixture of the buffer gas volume with the room air in the target space Vollinertmaschinesforementioned for an extinguishing operation can be achieved.
  • Both the basic inerting of the target area from the buffer space can be controlled via the gas supply lines, as well as a rapid full inertisation of the target area.
  • a buffer space supplies several adjacent destination spaces.
  • a particular flexibility of the device according to the invention is achieved in that as a different from the first Grundinertmaschinesforementioned inerting a second Grundinertmaschinesforementioned with even reduced oxygen content or the Vollinertmaschinesfor the erase mode is adjustable.
  • Such a second basic inerting level which is usually so close to the VollinertmaschinesRIC for the extinguishing operation that preventing fires in a closed room preventive possible, of course, can also be set on weekends or holidays, or in which a building is not used accordingly , Thus, reaching the Vollinertmaschineshous to extinguish fires in case of need by supplying an oxygen displacing gas from a buffer space is reached quickly.
  • the buffer space is formed as a container, in particular as a tank.
  • a container in particular as a tank.
  • the container can be structurally designed so that it can be optimally fitted using it in the available space in false ceilings or partitions.
  • the respective buffer spaces of the rooms of a building are connected to the individual rooms via gas supply lines.
  • the buffer gas volume or the buffer gas volumes of buffers of another room or the other rooms via these leads in be directed to the target area.
  • the prerequisite for this is that several rooms of a building are each equipped with a buffer. It is advantageous in this embodiment that even in those cases in which the respective buffer gas volumes are dimensioned only for setting the Grundinertmaschinescludes for the individual room, the Vollinertmaschinesindi can be achieved in the target area for extinguishing a fire.
  • rooms whose associated buffer gas volumes are dimensioned only for setting the respective Grundinertmaschinesmats connected via flaps or valves with leads to buffer spaces of the other rooms.
  • the supply of a target space can thus be controlled with buffer gas volumes of other buffer spaces and set again when reaching the Vollinertmaschinesmats in the target area. This will u.a. achieved that the deletion of a fire in the target area as quickly and efficiently as possible.
  • a mixing unit for mixing the room air of the target room with the buffer gas volume is preferably provided.
  • the control of the basic engineering level in the target area out of the buffer space is conceivable.
  • the equipment of the mixing unit with ventilation flaps and fans which are arranged in or at the target area.
  • This particularly simple construction allows the largely gas-tight closure of the buffer space with respect to the target area with closed ventilation flaps. With completely or partially opened ventilation flaps a controlled flooding of the target space is made possible.
  • a control device for controlling the oxygen content in the target area provided with a signal generator for switching between a daytime operation and a post-operation.
  • a control unit allows the adjustment of the inerting to the respective desired operating condition, the signal generator can perform the desired switching between daytime or nighttime operation independently of manual intervention and thus without necessary operating personnel.
  • control unit also monitors the air quality of the room air via measurement of the CO or CO 2 content and controls the ventilation flaps or the fans for fresh air supply.
  • An advantage of this embodiment is that thus no additional device for controlling the air quality of the room air is needed.
  • the signal generator can advantageously be designed so that it outputs a timing signal, a burglar alarm signal or an access control signal. If, for example, a time measuring device is used as the signal generator, an automatic changeover between daytime and postoperative operation can be preprogrammed. This type of default can also be made for days off, for example, for weekends at which usually no people in the monitored premises and the setting of a Grundinertmaschinesmuls below that for the daytime operation to prevent fires makes sense.
  • the signal generator can, however, also be designed as an access control system which, when identifying persons who identify themselves, for example, via a code or a magnetic card, sends a signal to the controller, which then sets an inerting level harmless to living beings. When using a burglar alarm system as a signal generator, however, a switch to Vollinertmaschine would be conceivable when an area is armed after leaving all persons present.
  • a fire alarm Preferably, by a fire alarm, z.
  • a fire alarm As an automatic smoke or heat detector or a manual call point to trigger the mixing of the buffer gas volume with the indoor air of the target area in the extinguishing operation ensures that at any time a fire can be safely detected and deleted.
  • this fire alarm can also trigger an audible and / or visual warning function for persons in the affected area.
  • a coupling of the fire alarm with fire doors is possible, which are automatically closed when triggering the mixing of the buffer gas volume with the air of the affected area and separate this area from others.
  • Fig. 1 shows a schematic representation of a room with buffer spaces 20, 20 'and a target space 10 before mixing the buffer volume 22, 22' and the room air 12.
  • the buffer space contains a buffer gas volume with an oxygen content of 5 vol .-%, the target space a room air having an oxygen concentration at a basic inertization level of 17% by volume.
  • the heights H of the buffer spaces 20, 20 ' are indicated laterally.
  • FIG. 2 shows the same schematic representation as in FIG. 1 after mixing the buffer gas volume 22, 22 'and the room air 12. Due to the altitude and concentration conditions, an oxygen concentration in the entire room is set to a full inertization level of 15% by volume according to equation ( 5). This can be done both at night to prevent fires and as a result of a fire detection signal.
  • FIG. 3 shows a schematic representation of a building with a plurality of buffer spaces 20, 20 'connected via a feed line 31.
  • the individual rooms of the building are dimensioned only with buffer gas volumes for setting a basic inertization level.
  • the individual buffer spaces 20, 20 ' are connected via valves or valves 53 to the supply line 31.
  • an additional supply of the target space 10 with buffer gas volumes 22, 22 'of other buffer spaces 20, 20' can thus take place and a Vollinertmaschinesmat set in the target area 10 become. This ensures that even here a fire in the target area 10 is combated as quickly and efficiently.
  • Fig. 5 is a functional diagram of an apparatus for carrying out the method according to the invention.
  • a buffer space 20, 20 'and a target space 10 can be seen.
  • Buffer and target space are connected by supply lines 30, 30', which are equipped with mixing units 50, 50 ', consisting of fans 54, 54' and ventilation flaps 52, 52 ' ,
  • a generator 80 in this embodiment supplies both the buffer and the target space with nitrogen to set a predetermined oxygen concentration in the buffer gas volume 22, 22 'and the room air 12. This is detected by means of the oxygen measuring device 40, 40 'and passed as a signal to a control unit 60.
  • the control unit 60 includes a timer 62 which can switch the generator via a further signal line into night or day mode.
  • the generator 80 then produces the desired level in the buffer space 20, 20 'and the target space 10 by increasing or decreasing the supply of nitrogen. This prevents the formation of fires in advance.
  • About fire detectors 70, 70 'but is also the triggering of the mixing units 60, 60 'possible on the direct path via the control unit 62, which sets this in case of fire in motion.

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  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Amplifiers (AREA)
  • Optical Communication System (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Image Generation (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP01273102A 2001-01-11 2001-11-12 Inertisierungsverfahren mit stickstoffpuffer Expired - Lifetime EP1261396B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10101079 2001-01-11
DE10101079 2001-01-11
DE10121550A DE10121550B4 (de) 2001-01-11 2001-05-03 Inertisierungsverfahren mit Stickstoffpuffer
DE10121550 2001-05-03
PCT/DE2001/004245 WO2002055155A1 (de) 2001-01-11 2001-11-12 Inertisierungsverfahren mit stickstoffpuffer

Publications (2)

Publication Number Publication Date
EP1261396A1 EP1261396A1 (de) 2002-12-04
EP1261396B1 true EP1261396B1 (de) 2006-06-21

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Application Number Title Priority Date Filing Date
EP01273102A Expired - Lifetime EP1261396B1 (de) 2001-01-11 2001-11-12 Inertisierungsverfahren mit stickstoffpuffer

Country Status (17)

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US (1) US7156184B2 (el)
EP (1) EP1261396B1 (el)
JP (1) JP4105548B2 (el)
CN (1) CN1251775C (el)
AT (1) ATE330673T1 (el)
AU (1) AU2002221560B2 (el)
CA (1) CA2408676C (el)
CY (1) CY1105283T1 (el)
CZ (1) CZ298794B6 (el)
DE (1) DE50110253D1 (el)
DK (1) DK1261396T3 (el)
ES (1) ES2264678T3 (el)
NO (1) NO335357B1 (el)
PL (1) PL195429B1 (el)
PT (1) PT1261396E (el)
RU (1) RU2266767C2 (el)
WO (1) WO2002055155A1 (el)

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PL195429B1 (pl) 2001-01-11 2007-09-28 Wagner Alarm Sicherung Sposób prowadzenia procesu w atmosferze gazu obojętnego z użyciem bufora azotowego i urządzenie do stosowania tego sposobu
DE10352437A1 (de) * 2003-11-10 2005-06-16 Wagner Alarm- Und Sicherungssysteme Gmbh Vorrichtung zum Verhindern und Löschen von Bränden
US20050115721A1 (en) 2003-12-02 2005-06-02 Blau Reed J. Man-rated fire suppression system
US7337856B2 (en) * 2003-12-02 2008-03-04 Alliant Techsystems Inc. Method and apparatus for suppression of fires
ES2399215T3 (es) * 2003-12-29 2013-03-26 Amrona Ag Procedimiento de inertización para la disminución del riesgo de un incendio
DE50312624D1 (de) 2003-12-29 2010-05-27 Amrona Ag Inertisierungsverfahren zum Löschen eines Brandes
JP4679113B2 (ja) * 2004-10-29 2011-04-27 株式会社竹中工務店 低酸素濃度防火システム
PL1683548T3 (pl) * 2005-01-21 2013-04-30 Amrona Ag Sposób inertyzacji w celu przeciwdziałania pożarom
WO2007079724A2 (de) * 2006-01-16 2007-07-19 Peter Fuchs Vorrichtung und verfahren zur brandbekämpfung mittels inertgas
SI1911498T1 (sl) * 2006-10-11 2009-04-30 Amrona Ag Večstopenjski inertizacijski postopek za preprečevanje in gašenje požarov v zaprtih prostorih
ATE432113T1 (de) * 2006-10-19 2009-06-15 Amrona Ag Inertisierungsvorrichtung mit stickstoffgenerator
ES2380458T3 (es) * 2006-12-08 2012-05-11 Amrona Ag Método y dispositivo para la alimentación regulada de suministro de aire
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BRPI0805836B1 (pt) * 2007-08-01 2018-08-07 Amrona Ag Processo de inertização para a redução do risco de um incêndio em um espaço fechado, bem como, dispositivo para realização do processo
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US8672348B2 (en) 2009-06-04 2014-03-18 Alliant Techsystems Inc. Gas-generating devices with grain-retention structures and related methods and systems
US20110308823A1 (en) * 2010-06-17 2011-12-22 Dharmendr Len Seebaluck Programmable controller for a fire prevention system
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US8616128B2 (en) 2011-10-06 2013-12-31 Alliant Techsystems Inc. Gas generator
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GB201200829D0 (en) * 2012-01-18 2012-02-29 Albertelli Aldino Fire suppression system
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Also Published As

Publication number Publication date
RU2266767C2 (ru) 2005-12-27
CZ298794B6 (cs) 2008-01-30
US20030226669A1 (en) 2003-12-11
PL195429B1 (pl) 2007-09-28
JP2004516910A (ja) 2004-06-10
CA2408676A1 (en) 2002-11-14
US7156184B2 (en) 2007-01-02
AU2002221560B2 (en) 2006-09-14
JP4105548B2 (ja) 2008-06-25
CN1251775C (zh) 2006-04-19
RU2002132660A (ru) 2004-03-27
NO20031842D0 (no) 2003-04-24
DE50110253D1 (de) 2006-08-03
WO2002055155A1 (de) 2002-07-18
CZ20031232A3 (cs) 2003-08-13
CN1427733A (zh) 2003-07-02
CA2408676C (en) 2009-01-20
DK1261396T3 (da) 2006-08-21
CY1105283T1 (el) 2010-03-03
NO20031842L (no) 2003-04-24
PL357445A1 (en) 2004-07-26
ATE330673T1 (de) 2006-07-15
ES2264678T3 (es) 2007-01-16
NO335357B1 (no) 2014-12-01
PT1261396E (pt) 2006-10-31
EP1261396A1 (de) 2002-12-04

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