EP1979056A2 - Vorrichtung und verfahren zur brandbekämpfung mittels inertgas - Google Patents
Vorrichtung und verfahren zur brandbekämpfung mittels inertgasInfo
- Publication number
- EP1979056A2 EP1979056A2 EP07711124A EP07711124A EP1979056A2 EP 1979056 A2 EP1979056 A2 EP 1979056A2 EP 07711124 A EP07711124 A EP 07711124A EP 07711124 A EP07711124 A EP 07711124A EP 1979056 A2 EP1979056 A2 EP 1979056A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- inert gas
- gas
- fire
- air
- storage 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.)
- Withdrawn
Links
Classifications
-
- 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
- In the invention is a fire extinguishing system with inert gases in a storage room, wherein inert gas is supplied to the storage room, so that the average oxygen content in the fire room drops below a threshold at which the fire suffocates for lack of oxygen.
- fire extinguishing systems based on this are known, which are used for firefighting in rooms, in buildings, e.g. Computer rooms, of different sizes are suitable.
- the disadvantage here is in particular the high consumption of inert gas to compensate for the overpressure losses during the flooding, in particular the material costs for the storage of the correspondingly high amounts of inert gas.
- the invention relates specifically to fire protection for storage containers, in particular storage containers with circulation racks, which are primarily used in industry, i.a. in factories are in practical use.
- fire protection systems are known only as individually designed solutions, primarily extinguishing water based, which have corresponding disadvantages, e.g. the triggering risk in the neutral (daily) course of action, as well as damage to the stored goods.
- the object of the invention is to provide a reliable fire protection system for closed spaces such as storage containers, which dispenses with extinguishing water and is reliable and inexpensive to operate. Another object is to design this fire protection system so that a preventive fire protection is possible. Particularly suitable is the fire protection system for storage containers with complex interior geometry, especially for storage containers with circulation shelves.
- the basic idea of the invention consists in the permanent or demand-controlled generation and supply of an extinguishing gas into the firing area with an oxygen content below the limit value of about 13% by volume.
- inert gas required for this purpose is minimized since the nitrogen content of about 80% already contained in the admixed air is likewise utilized as extinguishing agent.
- the addition or admixture of inert gas thus serves only to lower the oxygen content of about 20% in the admixed air below the limit of about 13% at which a fire suffocates.
- the control of the mixing ratio of air and inert gas for rapid achievement of this limit in case of fire allows flexible adaptation to different operating situations including fire prevention, for which according to the invention a mixing device for the admixture of air to inert gas is provided, and a system of supply lines for feeding and possibly To discharge the quenching gas to / from the container.
- a particularly effective firefighting effect is achieved when the supply and / or discharge of the extinguishing gas to / from selected locations of the respective storage container, which is determined by the interior geometry and the interior (for example Umlaufregale).
- the storage container is connected via a pipe system with specific fittings with a quenching gas container.
- the mixing device preferably a fan, integrated, with the In a first mode of operation in passive applications, the circulation of the container air can be achieved in a predetermined time.
- the continuous air flow produced by the fan - via the pipe system through the storage container - detects the smoke particles emitted by an incipient fire in the event of a fire and supplies them in no time to a smoke detector integrated in this air circulation system, preferably in the fan housing.
- the smoke detector triggers an electronic switching logic or a fire alarm panel fire alarm, at the same time the second mode of operation is activated, namely the fire extinguishing process with Inertgasflutung characterized in that an inert gas motor (solenoid) valve opens and in consequence first pure inert gas or via an injector as a mixing device by admixing air (eg from the storage container) in a predetermined concentration produced extinguishing gas having an oxygen content below 13 vol.% flows into the storage container.
- an inert gas motor (solenoid) valve opens and in consequence first pure inert gas or via an injector as a mixing device by admixing air (eg from the storage container) in a predetermined concentration produced extinguishing gas having an oxygen content below 13 vol.% flows into the storage container.
- the position of the gas inlets in the storage container as well as the pressure relief openings of the storage container corresponding thereto are matched to the specific internal geometries of the storage container. This makes it possible to define the quenching gas stream and permits a largely homogeneous distribution of the supplied quenching gas quantities, which benefits the economy by minimizing the use of inert gas.
- the extinguishing gas flows predominantly past the open front sides of the storage chambers arranged vertically in the storage container, thereby ensuring that all reachable space sections are reliably flooded.
- this design on the one hand, it is achieved that the risk of arcing between the storage chambers is at least considerably reduced, and at least partial flooding of fluidically largely "sealed off" areas of the storage chambers is achieved by the turbulence caused by secondary injection streams.
- the inflow openings particular account is taken of the secure flooding of the storage container area with the highest fire risk, as a rule the area in which the drive motor (s) of the container mechanics are / are located. Parallel or after expiration of the described preferably to about 60 seconds sized inert or Löschgasflutung the fan in maximum power a continuous quenching gas circulation through the pipe system - in principle largely vertically through the storage container - forth.
- the required quality of the extinguishing gas (oxygen content below 13 vol.%) Is constantly monitored / controlled by oxygen or nitrogen sensors (sensors). If the limit value of 13% is exceeded, opening of an inert gas engine valve causes the required (increasing) mixing of inert gas into the extinguishing gas cycle.
- Another option for optimum extinguishing gas flooding arises with the inclusion of the mechanics / electronics of the storage container, such that parallel to the triggered by the smoke detector inert gas or extinguishing gas flooding the conveying mechanism of the chambers is activated in the storage container.
- the program of the conveying mechanism is modified in such a way that during the flooding time as possible each open front of the chambers in the immediate flooding area, that is, before the gas inlet openings positioned thereon on the container, out (transported).
- Matched to this principle inert gas or quenching gas in the time factor ensures maximum flood safety with minimal technical effort, not least because the conveyor mechanism is ready to operate even in case of fire, because the drive motor is preferably in the immediate area of highest risk, ie in the shortest distance to the extinguishing gas inlet openings.
- the technical structure of the fire extinguishing system described above is particularly suitable for practical use as a preventive fire protection system. In this case, a permanent admission of the storage container inside by continuous or intermittent flooding with quenching gas with permanent electronic monitoring.
- Such a quenching gas atmosphere generates oxygen deficiency and prevents incipient fires.
- a fan is not mandatory, but advantageous for the production and maintenance of the homogeneity of the quenching gas in the storage container. The conditional supply of oxygen upon opening of the loading opening can be compensated specifically.
- the system technology provides a further option for conditioning air and / or quenching gas by adding additional components to the circulatory system at a suitable position for e.g. Heating - Cooling - Humidification and Dehumidification - Filter units can be used without affecting the primary function of fire protection.
- Figure 1 Illustration of the overall system
- Figure 2 Front view of the storage container of Figure 1
- Figure 3 Cross-section of the storage container of Figure 1
- 4A, 4B front views of two variants of a storage container.
- a storage container 1 with circulation racks 23 is connected via an inert gas line 2, as well as via an extinguishing gas line 3 with an inert gas storage tank 4 or a central inert gas pipe network 5.
- an inert gas container for liquid inert gas can be used immediately above the storage container, which empties in case of fire in the storage container and generates a quenching gas with an oxygen content below 13%.
- a mixing device in the form of a fan 6 and / or an injector 7, an inert gas motor valve 8 and motor valves as shut-off valves 10,11 and 12 are integrated.
- the fan 6 is an oxygen or nitrogen sensor 14th
- a suction line 17 is arranged on top of the storage container 1.
- Pressure relief openings 18 are located on the front and / or top of the storage container 1.
- Electronic components such as the logic circuitry of a fire panel 19 and switch 20 for the door of the storage tank 1 are located on the front or side of the storage container. 1
- an inert gas flooding can be initiated manually via a manual valve 21, which lies parallel to the two shut-off valves 12 in the inert gas line 2 and is provided in the area of the switch 20 of the container door.
- Components 22 for additional functions such as heating or cooling are connected to the pipe system.
- the monitoring components eg smoke detector 13 in the storage container 1 or oxygen / nitrogen sensor 14 in the fan 6, are activated.
- the inert gas engine valve 8 is in the "CLOSED” position, the shut-off valve 11 is “CLOSED”, the shut-off valve 10 is "OPEN”, the fan 6 is in a small power level a continuous air circulation through the inert gas 2, quenching gas 3 and Feed line 9 through the storage container 1 ago; the smoke detectors 13 monitor the air quality for particulates from fire emissions.
- the smoke detectors detect fire particles and trigger the following functions:
- the fan 6 can be switched on to improve the homogeneity in the flooding of the storage container, but is not mandatory for the deletion process.
- the extinguishing gas flowing into the storage container 1 via the extinguishing gas inlets 16 flows upwards substantially vertically through the storage container 1; a homogeneous flooding is largely determined by the positions of the pressure relief openings 18. According to the supplied extinguishing gas quantities, which are matched to the storage container volume and the maximum flooding time, the deletion process takes place and detects the burns within the storage container. 1 To optimize the efficiency, the position of the extinguishing gas inlets 16 can be adjusted to the position of the electric motor used to drive the conveyor mechanism as a potential fire source highest priority.
- the positions of the extinguishing gas inlets 16 are also to be matched to the respective positions of the circulation racks 23. Variants for supplying the extinguishing gas according to requirements via extinguishing gas inlets 16A, 16B are shown in FIGS. 4A and 4B.
- An optimal flooding homogeneity is produced when, parallel to the flooding process, the rotation of the circulation racks 23 of the storage container 1 is activated. If the flooding time with the maximum circulation time of a circulation rack 23 is largely identical, and the respective time-specific quenching gas is dimensioned to the volume of the circulation racks 23, results in a very short time a high homogeneity of the quenching gas in the total volume of the storage container. 1
- the fan 6 in a high power stage produces an extinguishing gas circulation through the storage container 1, in which case the quality of the extinguishing gas is monitored via the oxygen or nitrogen sensor 14.
- a demand-based make-up of inert gas via the inert gas engine valve 8 takes place.
- the storage container 1 After successful extinguishing, the storage container 1 is emptied in the following sequence:
- the storage container 1 is flooded via lines 2 and 3 with inert gas.
- the oxygen and / or nitrogen sensor 14 arranged in the housing of the fan 6 monitors the predetermined quality of the extinguishing gases and regulates, via the inert gas engine valve 8, extinguishing gas quality losses occurring during operation by feeding in inert gas. With such refilling takes place via the switching logic of the fire panel 19, the function "feed opening 15 CLOSE".
- the deletion process can be triggered manually via the manual valve 21.
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)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610002217 DE102006002217A1 (de) | 2006-01-16 | 2006-01-16 | Brandlöschsystem mit Inertgasen, geeignet für Lagerbehälter, insbesondere für Lagerbehälter mit Umlaufregalen |
DE200610013563 DE102006013563A1 (de) | 2006-03-24 | 2006-03-24 | Brandlöschsystem mit Inertgasen, geeignet für Lagerbehälter- insbesondere für Lagerbehälter mit Umlaufregalen |
DE200610015755 DE102006015755A1 (de) | 2006-04-04 | 2006-04-04 | Brandlöschsystem mit flüssigen Inertgasen, geeignet für Lagerbehälter, insbesondere für Lagerbehälter mit Umlaufregalen |
DE200610018671 DE102006018671A1 (de) | 2006-04-21 | 2006-04-21 | Brandlöschsystem mit Inertgasen, geeignet für Lagerbehälter - insbesondere für Lagerbehälter mit Umlaufregalen |
PCT/DE2007/000027 WO2007079724A2 (de) | 2006-01-16 | 2007-01-11 | Vorrichtung und verfahren zur brandbekämpfung mittels inertgas |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1979056A2 true EP1979056A2 (de) | 2008-10-15 |
Family
ID=38076528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07711124A Withdrawn EP1979056A2 (de) | 2006-01-16 | 2007-01-11 | Vorrichtung und verfahren zur brandbekämpfung mittels inertgas |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1979056A2 (de) |
WO (1) | WO2007079724A2 (de) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE10249126B4 (de) * | 2002-10-22 | 2004-08-19 | Minimax Gmbh | Verfahren und Anlage zum Erzeugen einer sauerstoffarmen Atmosphäre |
-
2007
- 2007-01-11 WO PCT/DE2007/000027 patent/WO2007079724A2/de active Application Filing
- 2007-01-11 EP EP07711124A patent/EP1979056A2/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2007079724A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007079724A3 (de) | 2007-10-04 |
WO2007079724A2 (de) | 2007-07-19 |
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