EP2998002B1 - Installation d'extinction à gaz inerte - Google Patents

Installation d'extinction à gaz inerte Download PDF

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Publication number
EP2998002B1
EP2998002B1 EP14185826.6A EP14185826A EP2998002B1 EP 2998002 B1 EP2998002 B1 EP 2998002B1 EP 14185826 A EP14185826 A EP 14185826A EP 2998002 B1 EP2998002 B1 EP 2998002B1
Authority
EP
European Patent Office
Prior art keywords
diffuser
inert gas
diffuser tube
gas
extinguishing system
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.)
Active
Application number
EP14185826.6A
Other languages
German (de)
English (en)
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EP2998002A1 (fr
Inventor
Anselm Eberlein
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.)
Amrona AG
Original Assignee
Amrona AG
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 to PL14185826T priority Critical patent/PL2998002T3/pl
Application filed by Amrona AG filed Critical Amrona AG
Priority to PT141858266T priority patent/PT2998002T/pt
Priority to ES14185826.6T priority patent/ES2618853T3/es
Priority to EP14185826.6A priority patent/EP2998002B1/fr
Priority to RU2017104417A priority patent/RU2690062C2/ru
Priority to CA2954103A priority patent/CA2954103C/fr
Priority to PCT/EP2015/070706 priority patent/WO2016045979A1/fr
Priority to AU2015321072A priority patent/AU2015321072B2/en
Priority to US14/849,650 priority patent/US9956444B2/en
Publication of EP2998002A1 publication Critical patent/EP2998002A1/fr
Application granted granted Critical
Publication of EP2998002B1 publication Critical patent/EP2998002B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A62C3/002—Fire prevention, containment or extinguishing specially adapted for particular objects or places for warehouses, storage areas or other installations for storing goods
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/64—Pipe-line systems pressurised
    • 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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/64—Pipe-line systems pressurised
    • A62C35/645—Pipe-line systems pressurised with compressed gas in pipework
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/68—Details, e.g. of pipes or valve systems
    • 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 present invention relates to a gas extinguishing system for a given protection area, in particular in the form of a screened construction system, such as a small parts storage system.
  • an inert gas extinguishing system is known, which is designed to render an enclosed protection area in accordance with different event sequences.
  • Another gas extinguishing system is from the DE 198 11 851 C1 known.
  • This gas extinguishing system is designed to lower the oxygen content in an enclosed space to a pre-settable baseline inerting level and, in the event of a fire or when needed, to further rapidly reduce the oxygen content to a particular full inertization level.
  • the known gas extinguishing system an inert gas source controllable by means of a control device; and a supply pipe system connected to the inert gas source and the protective region, via which the inert gas provided by the inert gas source can be supplied to the protected region.
  • an inert gas source either a pressure bottle battery, in which the inert gas is stored compressed, a system for generating inert gas (colloquially also referred to as "nitrogen generator”) or a combination of both solutions in question.
  • DE 10 2009 039 357 A1 discloses an inert gas gas extinguishing system with a distributor tube for introducing the inert gas into the space to be protected.
  • the prevention or extinguishing effect resulting from an inerting of a protected area is based on the principle of oxygen displacement.
  • Normal ambient air is known to be about 21 vol .-% of oxygen, about 78 vol .-% of nitrogen and about 1 vol .-% of other gases.
  • the oxygen concentration in the area concerned is reduced by introducing inert gas or an inert gas mixture, such as nitrogen.
  • inert gas or an inert gas mixture such as nitrogen.
  • fire extinguishment of most solids it is known, for example, that a extinguishing effect begins when the oxygen content drops below 15% by volume. Depending on the flammable materials present in the protection zone, further lowering of the oxygen content to, for example, 12 vol.% May be required.
  • the present invention has for its object, starting from a conventional designed for enclosed and relatively gas-tight spaces and projected fire extinguishing system, as described for example in the EP 2 186 546 A1 or in the DE 198 11 851 C1 is described, these to the effect that it can be used for shelving and storage systems, especially bearings with low storage intervals in the form of, for example, vertical shuttle and Paternoster systems.
  • the present invention relates in particular to a gas extinguishing system for a given protection area, in particular in the form of a screened construction system, such as a small parts storage system, wherein the gas extinguishing system comprises an inert gas source and a connected via a piping system fluidly connected to the inert gas source or connectable diffuser system.
  • the inert gas source is designed to provide inert gas at least during a flood time designed with respect to the protected area.
  • the diffuser system of the gas extinguishing system according to the invention has at least one diffuser tube with a plurality of bores provided in the lateral surface of the diffuser tube, whereby at least part of the inert gas provided by the inert gas source can be radially introduced into the protected region, based on the longitudinal direction of the diffuser tube.
  • the diffuser system of the gas extinguishing system according to the invention also has a pressure reduction with an orifice assigned to the at least one diffuser tube, this pressure reduction being arranged in terms of flow between the pipeline system and the at least one diffuser tube.
  • the provision of the at least one diffuser tube makes it possible for the inert gas to be introduced into the protected area via many small openings (bores) in the event of fire or when required. This ensures a gentle flooding while optimally distributing the inert gas in the protected area.
  • the openings (bores) in the lateral surface of the diffuser tube can be individually adapted to the local conditions of the protected area.
  • the openings / holes in the lateral surface of the diffuser tube are preferably individually adapted at different heights within the vertical storage system, so that neither trays nor others Structural structures for the quenching gas (inert gas) can form obstacles.
  • the gas extinguishing system according to the invention is characterized in that the Diffusorsytem has a the at least one diffuser tube associated pressure reduction with a diaphragm, the pressure reduction fluidly between the Kirssytem over which the diffuser system is fluidly connected to the inert gas source of the gas extinguishing system or connectable, and the at least a diffuser tube is arranged.
  • this is designed such that during the flood time designed for the protection area a bar in absolute metered diaphragm pressure is at least twice as high as the internal pressure of the diffuser tube, and that during the designed flood time of the internal pressure of the Diffuser tube maximum 2 bar absolute.
  • a diffuser system configured in this way allows a uniform distribution of the extinguishing agent (inert gas, in particular nitrogen) in the extinguishing area of small parts storage systems with minimal flow load.
  • the extinguishing agent in particular nitrogen
  • the resulting gentle flooding of the protected area with a maximum of 2 bar pressure ensures that the goods stored in the protected area are not damaged.
  • the mentioned projecting of the diffuser system has the further advantage that the diffuser system constitutes a "reaction-free add-on component" for the remaining components of the gas extinguishing system in terms of approval.
  • reaction-free in this context means that, from the design point of view of the gas extinguishing system, it makes no difference whether a diffuser system or a standard extinguishing nozzle (single-hole nozzle) is connected at the end of the pipeline system which is connected or connectable with the inert gas source.
  • the project planning of the gas extinguishing system according to the invention with said diffuser system basically basically corresponds in many parts of the standard configuration of a conventional Gas extinguishing system, which is a tested and proven system, for example with VdS approval.
  • the planning tools and the configuration software can be used, which have already been developed for projecting a gas extinguishing system with standard extinguishing nozzles and have been tested accordingly.
  • the gas extinguishing system according to the invention is a solution that is particularly easy to implement but nevertheless effective and, in particular, adapted for vertical storage systems.
  • the at least one diffuser tube is preferably designed so that during the flood time, preferably all of them in the lateral surface of the at least a diffuser tube formed holes the same mass flow of inert gas is discharged.
  • the sum area of the bores corresponds at most to half the cross-sectional area of the diffuser tube with equally distributed inert gas flows through the bores (area rule).
  • this area rule it is conceivable to exceed this area rule by, for example, 30%, so that the sum area of the holes corresponds to half the cross-sectional area of the diffuser tube plus 30%.
  • the soft Mass flows through the holes not more than 10% from each other, which is usually tolerable.
  • the holes provided in the lateral surface of the at least one diffuser tube each have a predetermined bore diameter.
  • the maximum internal pressure in the diffuser tube is adjusted so that the inert gas is released as a subcritical flow into the protected area during the flood time designed for the protected area.
  • This condition can be realized for nitrogen, for example, if the internal pressure in the diffuser tube does not exceed twice the external pressure, ie approximately 2 bar absolute.
  • the diffuser tube not only a feedback-free deflection of serving as an extinguishing inert gas from the longitudinal direction of the diffuser tube in a direction of the diffuser tube radial flow direction is possible, but it is also achieved that no or at least significantly less turbulence in the protected area arise and in comparison to holes in which a supercritical flow is generated, which is the case for example when the internal pressure in the diffuser tube is so great that the flow velocity in the outlet holes reaches the speed of sound and the holes thus act as a nozzle.
  • the diffuser system is designed such that - based on the bore surface - during the designed flood time, the amount of inert gas released per second through the holes of the at least one diffuser tube into the protected area has a predetermined value of 4.86 x 10 5 liters / (sxm 2 bore area) and preferably 4.01 x 10 5 liters / (sxm 2 bore area), measured at 20 ° C and 1.013 bar.
  • the diffuser system is designed such that - based on the inner cross-sectional area of the at least one diffuser tube - during the designed flood time the amount of inert gas released per second through the holes of the at least one diffuser tube in the protected area a predetermined Value of 2.92 x 10 5 liters / (sxm 2 internal cross-sectional area), and preferably of 2.83 x 10 5 liters / (sxm 2 internal cross-sectional area), measured at 20 ° C and 1.013 bar.
  • the diffuser system is designed such that during the flood time designed with respect to the protected area, the per second over each individual bore of at least an amount of inert gas released into the protected area of a diffuser tube does not exceed a predetermined value of about 0.004 kg / s, and preferably of about 0.0033 kg / s.
  • the diffuser system is designed such that during the flood time designed with respect to the protected area, the total amount of inert gas released per second into the protected area per second via the bores provided in the lateral surface of the diffuser pipe has a predetermined value of about 0.75 kg / s and preferably of about 0.726 kg / s.
  • the at least one diffuser pipe of the diffuser system has a nominal diameter (DN) of 50 according to DIN EN ISO 6708, wherein in the lateral surface of the at least one Diffuser tube maximum 220 holes are formed with a diameter of about 2.8 to 3.2 mm, and wherein the holes are formed in a portion of the diffuser tube having a maximum length of 22 m.
  • DN nominal diameter
  • the at least one diffuser pipe of the diffuser system has a nominal diameter (DN) of 50 according to DIN EN ISO 6708, wherein in the lateral surface of the at least one Diffuser tube maximum 220 holes are formed with a diameter of about 2.8 to 3.2 mm, and wherein the holes are formed in a portion of the diffuser tube having a maximum length of 22 m.
  • the inert gas source of the gas extinguishing system it is preferred if it has at least one inert gas pressure vessel in which the inert gas is stored in compressed form, preferably below 200 or 300 bar.
  • the inert gas source can be used on already proven in conventional gas extinguishing systems and removed components.
  • the inert gas source it is also possible in this context for the inert gas source to comprise an inert gas generator, in particular a nitrogen generator in the form of a gas separation system, alternatively or in addition to the at least one inert gas pressure vessel.
  • the diffuser system further comprises at least one delivery pipe arranged in flow between the pressure reduction and the diffuser pipe, via which inert gas is passed from the pressure reduction to the diffuser pipe, if necessary.
  • the diffuser system further comprises at least one support tube, in particular for the mechanical support of the diffuser tube, which closes the at least one diffuser tube at its end region opposite the pressure reduction ,
  • the pressure reduction opposite end portion of the diffuser tube should be completed, for example via a corresponding end cap to ensure that the diffuser tube supplied inert gas exclusively through the provided in the lateral surface of the diffuser tube holes in the Protected area is released.
  • said pre-pipe or support tube serves only for the correct positioning of the diffuser pipe with regard to the protective area or for supporting or leveling the diffuser pipe, wherein this additional component (pre-pipe and / or support pipe) above all has no influence on the non-reactive configuration of the diffuser system Has.
  • the diffuser tube is designed as a straight piece of pipe in particular without elbow, angle or tees.
  • elbows, angles or tees - should this be necessary - be provided spatially before the pressure reduction of the diffuser system.
  • the at least one diffuser tube With regard to the production of the at least one diffuser tube, it is advantageous if this is formed from a plurality of segments formed separately from each other. This is especially true when the diffuser pipe exceeds a certain total length. In this context, it has proven to be advantageous to connect the plurality of separately formed segments, in particular via a cold press connection to each other in terms of flow. This ensures optimum sealing of the interfaces between two adjacent diffuser tube segments, even if cooling of the diffuser tube takes place when the inert gas is released.
  • connection techniques come into question, such as compounds in which sealing elements are integrated or provided.
  • the gas extinguishing system in a preferred embodiment, in that it has a particularly aspiratively operating recognition device which is designed to detect at least one fire parameter in the protected area. Furthermore, it is advantageous in this context if the gas extinguishing system has a control device which is designed to automatically control the inert gas source, depending on the fire characteristic monitoring, in such a way that the oxygen concentration in the flood time set for the given protection range is determined according to a predetermined event sequence Protected area lowered to a predetermined inerting and preferably held there for a predetermined holding time.
  • fire characteristic physical quantities that undergo measurable changes in the environment of a fire, e.g. the ambient temperature or the solid, liquid or gas content in the ambient air, such as smoke particles, smoke aerosols, steam or combustion gases.
  • An aspirative fire detection device is characterized in that the monitored protection area continuously or at predetermined times or events representative air samples are taken, these air samples are then fed to a corresponding fire characteristic detector.
  • the gas extinguishing system is designed to initiate the inert gas supply, preferably automatically and as a function of a fire characteristic monitoring, at least one system is provided for detecting the oxygen concentration in the protected area. In this way, it is ensured that in the event of fire or if necessary, the oxygen concentration in the protected area can be lowered to or below the predetermined inerting level and preferably maintained there for a predetermined holding time.
  • FIG. 1 schematically the basic structure of an exemplary embodiment of the gas extinguishing system 1 according to the invention is shown.
  • the essential components of the gas extinguishing system 1 include, in particular, an inert gas source 2 and a diffuser system 4 connected or connectable to the inert gas source 2 via a pipeline system 3.
  • the inert gas source 2 is formed from a plurality of pressure cylinders 2.1, in which inert gas (here: preferably nitrogen) is stored in compressed form.
  • inert gas here: preferably nitrogen
  • nitrogen or a nitrogen-enriched gas mixture is used as the inert gas, although this is not to be considered as a restriction is.
  • other inert gases or inert gas mixtures or extinguishing gases can be used for fire extinguishment.
  • the individual pressure bottles 2.1 are each fluidly connected or connectable via a valve with flow regulator 5 to the end region of the conduit system 3 facing the inert gas source 2.
  • a control bottle here: 200 bar pressure bottle with a capacity of 80 liters
  • the inert gas source 2 and the piping system 3 of in FIG. 1 schematically illustrated embodiment of the gas extinguishing system 1 according to the invention are in the usual way, and as it is the case with gas extinguishing systems with extinguishing nozzles projected. Instead of extinguishing nozzles, however, a (nozzle-free) diffuser system 4 is used in the extinguishing gas extinguishing system 1 according to the invention.
  • the diffuser system 4 consists essentially of a diffuser tube 7 and a pressure reduction associated with the diffuser tube 8.
  • the structure of the pressure reduction 8 is in the upper in FIG. 2 shown in detail detailed sectional view.
  • the pressure reduction 8 with the inert gas source 2 remote end portion of the conduit system 3 is fluidly connected.
  • the adapter piece 10 also serves to reduce the pressure 8 with the (in FIG. 2 upper) end portion of the diffuser tube 7 fluidly connect, so that the pressure reduction 8 is arranged with the pressure reduction 8 belonging to aperture 2 fluidly between the piping system 3 and the diffuser tube 7.
  • FIG. 2 schematically illustrated diffuser tube 7 is constructed in several parts and consists of individual segments 7.1, 7.2 and 7.3, wherein two adjacent each Segments 7.1, 7.2 and 7.2, 7.3 of the diffuser tube 7 are each connected in fluid communication with each other via a corresponding connector 11.
  • the connecting piece 11 can, as in the lower detail view in FIG. 2 indicated, be provided with a corresponding seal 12; However, it is in the context of the present invention is advantageous to connect the connector 11 without seal 12 via a cold pressing with the corresponding end portions of the diffuser tube segments to be connected (see, for this purpose, the middle detail view in FIG. 2 ).
  • FIG. 1 used diffuser system 4 is designed as a non-reactive add-on component, so that it makes no difference from the design view of the gas extinguishing system 1, whether at the inert gas source 2 end facing away from the lead system 3, a conventional standard extinguishing nozzle, for example in the form of a Einlochdüse, or Diffuser system 4 is connected.
  • the diffuser system 4 is designed in such a way, on the one hand, that during a flood time designed with respect to the protection area 14, an iris pre-pressure measured in absolute bar pressure is at least twice as high as the internal pressure of the diffuser tube 7 and, on the other hand, during the designed flood time the internal pressure of the diffuser tube 7 is a maximum of 2 absolute bar.
  • FIG. 1 schematically illustrated exemplary embodiment of the gas extinguishing system 1 according to the invention provided that with the diffuser tube 7, the inert gas in the gas extinguishing system 1 associated protection area 14 according to a uniform distribution function is releasable.
  • the diffuser tube 7 used in the gas extinguishing system 1 according to the invention has a multiplicity of bores 13 provided in its lateral surface, via which, if required or in case of fire, at least part of the inert gas provided by the inert gas source 2 can be introduced into the protective region 14 assigned to the gas extinguishing system 1 ,
  • the diffuser tube 7 serves to deflect the flow direction of the inert gas from the longitudinal direction of the diffuser tube 7 into a radial direction with respect to the diffuser tube 7 and to release the inert gas into the protected area without reaction.
  • the measures provided for in the lateral surface of the diffuser tube 7 holes 13 each have a predetermined bore diameter, and it is also advantageous for manufacturing reasons, to arrange the holes 13 according to a fixed tube spacing grid.
  • the diffuser tube 7 supplied Inert gas is released during the designed flood time as a subcritical flow in the protection area 14.
  • a subcritical flow can be realized if the bores in each case-as seen through the wall thickness of the diffuser tube 7-consistently have a constant cross-section and therefore, in particular, there is no nozzle shape.
  • FIG. 3 schematically illustrated gas extinguishing system 1 substantially corresponds to the basic structure of the reference to the representations in the FIG. 1 described plant.
  • the following to avoid repetition on a description of the same or equivalent components of the in FIG. 3 be omitted gas extinguishing system 1 shown. Rather, the following statements focus on aspects of the gas extinguishing system 1 according to the invention, which additionally in the in FIG. 3 schematically illustrated embodiment are provided.
  • the gas extinguishing system 1 shown there is associated with a particular protection area 14, which is, for example, a small parts storage system, in particular a vertical high-density storage system (shuttle or paternoster system).
  • a particular protection area 14 which is, for example, a small parts storage system, in particular a vertical high-density storage system (shuttle or paternoster system).
  • FIG. 3 schematically illustrated gas extinguishing system 1
  • a total of two diffuser systems 4 are arranged on the piping system 3, the diffuser tubes 7 are each aligned vertically.
  • the inert gas feed into the corresponding diffuser tubes 7 takes place in the in FIG. 3
  • a control device 15 is schematically indicated, which may be designed as part of a fire alarm control panel (BMZ).
  • the control device 15 serves to correspondingly control the inert gas source 2, if necessary, in order to initiate an inerting of the protection area 14 assigned to the gas extinguishing system 1 or to ensure that a predefined inerting level is not exceeded in the protection area 14 for a predefined or predefinable time period.
  • a fire detection device 16 and a system for detecting the oxygen concentration in the protection area 14 is provided (not shown).
  • the fire detection device 16 is preferably designed as an aspiratively operating system and designed to detect at least one fire parameter in the protection area 14.
  • control device 15 preferably automatically controls the inert gas source 2 in such a way that the oxygen concentration in the protection zone 14 is lowered to a predetermined inertization level in accordance with a predetermined event sequence within the flood time designed for the given protection zone 14 , It is advantageous if the preferably automatic initiation of the inert gas source 2 together with a corresponding Alerting takes place. This is shown in the schematic representation in FIG. 3 an alarm device 18 is provided.
  • the gas extinguishing system 1 is further provided with the aforementioned system 17 for detecting the oxygen concentration in the protection area 14 to ensure that sufficient inert gas is supplied to the protection area 14 in order to be able to set and maintain the required inertization level in the protection area 14. For this purpose, it may be necessary to supply additional inert gas via a subsequent flooding.
  • FIG. 4a and FIG. 4b different embodiments of diffuser systems 4 are shown, which can be used in the gas extinguishing system 1 according to the invention as a non-reactive attachment component.
  • FIG. 4a show three different embodiments of the diffuser system 4, wherein in each case the supply of inert gas into the corresponding diffuser system 4 takes place from above.
  • This type of inert gas feed from above is possible in particular for protection areas 14 whose height is not greater than 22 m.
  • the diffuser tube 7 of the respective diffuser systems 4 arranged at different vertical heights.
  • the vertical positioning of the diffuser tube 7 in the protection area 14 is effected by using at least one front tube 19 and / or by using at least one support tube 20.
  • the or the Vorrohre 19 and the or the support tubes 20 are each carried out without holes in the lateral surface and serve primarily only for vertical positioning or for mechanical support of the corresponding diffuser tube 7.
  • FIG. 4b a configuration of diffuser systems 4 is shown, which can be used in protection areas 14 whose height is greater than 22 m.
  • the mounting direction ie the supply of inert gas in the corresponding diffuser systems 4
  • the end region of the diffuser tube 7 opposite the pressure reduction is to be completed. This is usually done with the help of a cap 21 of a piece pipe 20 or the like conclusion.
  • the at least one diffuser system 4 used in the gas extinguishing system 1 according to the invention is designed to distribute the extinguishing agent / inert gas, in particular nitrogen, in the protected area 14 (extinguishing area of small parts storage systems) evenly with minimum flow load.
  • the diffuser system 4 in the gas extinguishing system 1 structurally assumes the function of the standard extinguishing nozzle usually used, supplemented with the function of deflection and fine distribution of the inert gas.
  • the diffuser system 4 represents the final component of the gas extinguishing system 1 before the inert gas enters the protective area 14.
  • the solution according to the invention is characterized in particular by the fact that the required project planning specifications and design methodology for the diffuser system 4 - insofar as the configurations relate to the structure and structure of the gas extinguishing system outside the protected area 14 - are no different from the standard system with extinguishing nozzles.
  • the pressure reduction 8 belonging to the diffuser system 4 represents the system interface between the high-pressure part of the gas extinguishing system 1 and the diffuser pipe 7.
  • the pressure reduction 8 separates the pressure-loaded area in the piping system 3 (usually up to 60 bar) from the low-pressure area in the diffuser pipe (maximum) 1 bar overpressure).
  • the diffuser pipe 7 is formed from a straight stainless steel pipe DN 50 open at both ends, at the beginning of which the pressure reduction 8 is arranged. Up to 220 holes with a diameter of 3.0 mm are formed on one section of the stainless steel tube, which are arranged radially in a 50 mm grid in a line. Due to the pressure reduction 8, the inert gas flows into the diffuser tube 7 and then exits radially uniformly from the holes 13.
  • the flood time designed with regard to the protection area 14 is specified in the respective national regulations, for example in the corresponding VdS guidelines issued by German non-life insurers.
  • the diffuser systems 4 are to be designed according to VdS 2380 room protection.
  • the space protection according to VdS 2380 describes the specifications for inert gas extinguishing systems to minimize the risk of fire in general rooms with different fire load (fire products) and various sources of ignition.
  • the directive refers to the extinction by inert gases and inert gas mixtures.
  • the type of fire risk determines the flood time (passage of 95% design concentration extinguishing gas) for small parts storage systems with a maximum of 60 or 120 seconds, furthermore the design concentration and the holding time of 10 minutes or 20 minutes.

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  • Business, Economics & Management (AREA)
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  • Engineering & Computer Science (AREA)
  • Operations Research (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Claims (15)

  1. Installation d'extinction à gaz (1) pour une zone de protection prédéterminée (14) en particulier sous la forme d'un système de construction tramé, comme par exemple sous la forme d'un système de magasinage de petites pièces, l'installation d'extinction à gaz (1) comprenant les éléments suivants :
    - une source de gaz inerte (2) qui est conçue pour fournir du gaz inerte au moins pendant un temps d'inondation conçu à l'égard de la zone de protection (14) ; et
    - un système diffuseur (4) relié ou susceptible d'être relié sur le plan fluidique à la source de gaz inerte (2) via un système de tuyauterie (3), le système diffuseur (4) comprenant :
    - au moins un tube diffuseur (7) pourvu d'une multitude de perçages (13) prévus dans la surface enveloppe du tube diffuseur (7), via lesquels une partie au moins du gaz inerte fourni par la source de gaz inerte (2) est susceptible d'être introduite dans la zone de protection (14) radialement par rapport à la direction longitudinale du tube diffuseur (7) ; et
    - un réducteur de pression (8) associé audit au moins un tube diffuseur (7) et pourvu d'un cache (9), le réducteur de pression (8) étant agencé sur le plan fluidique entre le système de tuyauterie (3) et ledit au moins un tube diffuseur (7),
    le système diffuseur (4) étant conçu de telle sorte que pendant le temps d'inondation prévu, une pression préalable absolue du cache mesurée en bar est au moins deux fois plus élevée que la pression intérieure du tube diffuseur (7), et en ce que pendant le temps d'inondation prévu, la pression intérieure maximale absolue du tube diffuseur (7) est de 2 bars.
  2. Installation d'extinction à gaz (1) selon la revendication 1, dans laquelle ledit au moins un tube diffuseur (7) est conçu de telle sorte que pendant le temps d'inondation prévu, c'est de préférence le même flux massique de gaz inerte qui sort de tous les perçages (13) ménagés dans la surface enveloppe dudit au moins un tube diffuseur (7).
  3. Installation d'extinction à gaz (1) selon la revendication 1 ou 2, dans laquelle les perçages (13) prévus dans la surface enveloppe dudit au moins un tube diffuseur (7) présentent chacun un diamètre défini préalablement, et de plus la pluralité de perçages (13) prévus dans la surface enveloppe dudit au moins un tube diffuseur (7) sont disposés selon une trame fixe d'écartement de perçages.
  4. Installation d'extinction à gaz (1) selon l'une des revendications 1 à 3, dans laquelle de préférence tous les perçages (13) prévus dans la surface enveloppe dudit au moins un tube diffuseur (7) sont réalisés chacun pour dégager le gaz inerte sous forme de flux sous-critique dans la zone de protection (14) pendant le temps d'inondation prévu.
  5. Installation d'extinction à gaz (1) selon l'une des revendications 1 à 4, dans laquelle de préférence tous les perçages (13) prévus dans la surface enveloppe dudit au moins un tube diffuseur (7) présentent une section transversale constante en continu, vue sur l'épaisseur de paroi du tube diffuseur (7).
  6. Installation d'extinction à gaz (1) selon l'une des revendications 1 à 5, dans laquelle, par rapport à l'aire du perçage et pendant le temps d'inondation prévu, le système diffuseur (4) est conçu de telle sorte que la quantité de gaz inerte dégagée par seconde dans la zone de protection (14) via chaque perçage individuel (13) dudit au moins un tube diffuseur (7) ne dépasse pas une valeur prédéterminée de 4,86 x 105 litres / (s x m2 d'aire du perçage) et de préférence 4,01 x 105 litres / (s x m2 d'aire du perçage) et de préférence, à savoir à 20 °C et à 1,013 bar.
  7. Installation d'extinction à gaz (1) selon l'une des revendications 1 à 6, dans laquelle, par rapport à l'aire intérieure de section transversale dudit au moins un tube diffuseur (7) et pendant le temps d'inondation prévu, le système diffuseur (4) est conçu de telle sorte que la quantité de gaz inerte dégagée au total par seconde dans la zone de protection (14) via les perçages individuels (13) dudit au moins un tube diffuseur (7) ne dépasse pas une valeur prédéterminée de 2,92 x 105 litres / (s x m2 d'aire intérieure de section transversale) et de préférence 2,83 x 105 litres / (s x m2 d'aire intérieure de section transversale), à mesurée savoir à 20 °C et à 1,013 bar.
  8. Installation d'extinction à gaz selon l'une des revendications 1 à 7, dans laquelle le gaz inerte utilisé est de l'azote ou un mélange gazeux enrichi d'azote, et pendant le temps d'inondation prévu, la quantité de gaz inerte dégagée par seconde dans la zone de protection (14) via chaque perçage individuel (13) dudit au moins un tube diffuseur (7) ne dépasse pas une valeur prédéterminée de 0,004 kg/s et de préférence 0,0033 kg/s; et/ou dans laquelle le gaz inerte utilisé est de l'azote ou un mélange gazeux enrichi d'azote, et le système diffuseur (4) est en outre conçu de telle sorte que pendant le temps d'inondation prévu, la quantité de gaz inerte dégagée au total par seconde dans la zone de protection (14) via les perçages (13) dudit au moins un tube diffuseur (7) ne dépasse pas une valeur prédéterminée de 0,75 kg/s et de préférence 0,726 kg/s.
  9. Installation d'extinction à gaz (1) selon l'une des revendications 1 à 8, dans laquelle la source de gaz inerte (2) comprend au moins un récipient sous pression à gaz inerte dans lequel le gaz inerte est stocké sous forme comprimée, de préférence à 200 ou à 300 bars.
  10. Installation d'extinction à gaz (1) selon l'une des revendications 1 à 9, dans laquelle, en particulier en vue du positionnement vertical dudit au moins un tube diffuseur (7) dans la zone de protection (14), le système diffuseur (4) comprend en outre au moins un tube préliminaire (19) disposé sur le plan fluidique entre le réducteur de pression (8) et le tube diffuseur (7), via lequel, en cas de besoin, du gaz inerte est acheminé du réducteur de pression (8) au tube diffuseur (7).
  11. Installation d'extinction à gaz (1) selon l'une des revendications 1 à 10, dans laquelle en particulier en vue d'un soutien mécanique du tube diffuseur (7) dans la zone de protection (14), le système diffuseur (4) comprend au moins un tube de soutien (20) qui referme ledit au moins un tube diffuseur (7).
  12. Installation d'extinction à gaz (1) selon l'une des revendications 1 à 11, dans laquelle ledit au moins un tube diffuseur (7) est réalisé sous forme de tube rectiligne sans coude, sans angle ou sans pièce en T.
  13. Installation d'extinction à gaz (1) selon l'une des revendications 1 à 12, dans laquelle ledit au moins un tube diffuseur (7) est formé de plusieurs segments (7.1, 7.2, 7.3) réalisés séparément les uns des autres, les plusieurs segments (7.1, 7.2, 7.3) réalisés séparément les uns des autres étant reliés entre eux sur le plan fluidique de préférence par une liaison pressée à froid.
  14. Installation d'extinction à gaz (1) selon l'une des revendications 1 à 13, l'installation d'extinction à gaz (1) comprenant les éléments suivants :
    - un dispositif de détection d'incendie opérant en particulier par aspiration qui est conçu pour détecter au moins une grandeur de détection d'incendie dans la zone de protection (14) ; et
    - un dispositif de commande (15) qui est conçu pour piloter de préférence automatiquement la source de gaz inerte en fonction de la surveillance de la grandeur de détection d'incendie, de telle sorte que, suivant un déroulement événementiel préalablement déterminé, dans le temps d'inondation conçu pour la zone de protection prévue (14), la concentration en oxygène dans la zone de protection (14) est baissée à un niveau d'inertisation prédéterminé et y est maintenue de préférence pendant un temps de maintien prédéterminé.
  15. Installation d'extinction à gaz (1) selon la revendication 14, dans laquelle il est en outre prévu au moins un système de détection de la concentration en oxygène dans la zone de protection (14).
EP14185826.6A 2014-09-22 2014-09-22 Installation d'extinction à gaz inerte Active EP2998002B1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
PT141858266T PT2998002T (pt) 2014-09-22 2014-09-22 Sistema de extinção de gás inerte
ES14185826.6T ES2618853T3 (es) 2014-09-22 2014-09-22 Instalación de extinción de gas inerte
EP14185826.6A EP2998002B1 (fr) 2014-09-22 2014-09-22 Installation d'extinction à gaz inerte
PL14185826T PL2998002T3 (pl) 2014-09-22 2014-09-22 Urządzenie gaśnicze z gazem obojętnym
RU2017104417A RU2690062C2 (ru) 2014-09-22 2015-09-10 Система газового пожаротушения
CA2954103A CA2954103C (fr) 2014-09-22 2015-09-10 Installation d'extinction de gaz inerte
PCT/EP2015/070706 WO2016045979A1 (fr) 2014-09-22 2015-09-10 Installation d'extinction de gaz inerte
AU2015321072A AU2015321072B2 (en) 2014-09-22 2015-09-10 Inert gas extinguishing system
US14/849,650 US9956444B2 (en) 2014-09-22 2015-09-10 Gas extinguishing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14185826.6A EP2998002B1 (fr) 2014-09-22 2014-09-22 Installation d'extinction à gaz inerte

Publications (2)

Publication Number Publication Date
EP2998002A1 EP2998002A1 (fr) 2016-03-23
EP2998002B1 true EP2998002B1 (fr) 2016-12-21

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EP14185826.6A Active EP2998002B1 (fr) 2014-09-22 2014-09-22 Installation d'extinction à gaz inerte

Country Status (9)

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US (1) US9956444B2 (fr)
EP (1) EP2998002B1 (fr)
AU (1) AU2015321072B2 (fr)
CA (1) CA2954103C (fr)
ES (1) ES2618853T3 (fr)
PL (1) PL2998002T3 (fr)
PT (1) PT2998002T (fr)
RU (1) RU2690062C2 (fr)
WO (1) WO2016045979A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017130587A1 (de) 2017-12-19 2019-06-19 Minimax Gmbh & Co. Kg Pneumatisches Steuergerät für Mehrbereichs-Feuerlöschanlagen, sowie Mehrbereichs-Feuerlöschanlage mit selbigem
NO345671B1 (en) * 2019-09-25 2021-06-07 Autostore Tech As Gas isolated storage system

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US3182669A (en) * 1963-03-30 1965-05-11 Algonquin Shipping & Trading Combined tanker service unit
US3545485A (en) * 1969-01-29 1970-12-08 Us Air Force Gas partitioning pressure regulator
US5850876A (en) * 1990-01-08 1998-12-22 Pyrozone Pty. Ltd. Apparatus and system for the storage and supply of liquid CO2 at low pressure for extinguishing of fires
DE19811851C2 (de) 1998-03-18 2001-01-04 Wagner Alarm Sicherung Inertisierungsverfahren zur Brandverhütung und -löschung in geschlossenen Räumen
US20020040940A1 (en) * 1998-03-18 2002-04-11 Wagner Ernst Werner Inerting method and apparatus for preventing and extinguishing fires in enclosed spaces
DE10352437A1 (de) * 2003-11-10 2005-06-16 Wagner Alarm- Und Sicherungssysteme Gmbh Vorrichtung zum Verhindern und Löschen von Bränden
DE202004007291U1 (de) * 2004-05-07 2005-09-15 Viega Gmbh & Co Kg Pressverbindungsanordnung
GB2424184A (en) * 2005-03-14 2006-09-20 Kidde Ip Holdings Ltd Inert gas fire suppression system
FR2883759B1 (fr) * 2005-03-31 2007-06-15 Air Liquide Procede d'extinction de feu dans un compartiment d'un aeronef
CA2718351A1 (fr) * 2008-03-14 2009-09-17 Peter Fuchs Installation d'extinction d'incendie pour un systeme de stockage
ATE479476T1 (de) 2008-10-07 2010-09-15 Amrona Ag Inertgasfeuerlöschanlage zur minderung des risikos und zum löschen von bränden in einem schutzraum
DE102009039357A1 (de) * 2009-08-29 2011-03-03 Peter Fuchs Brandlöschsystem mit dem Löschmittel Inertgas für technische Lagersysteme

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Also Published As

Publication number Publication date
AU2015321072B2 (en) 2019-06-27
RU2017104417A3 (fr) 2019-04-23
CA2954103C (fr) 2022-06-21
EP2998002A1 (fr) 2016-03-23
PL2998002T3 (pl) 2017-06-30
WO2016045979A1 (fr) 2016-03-31
PT2998002T (pt) 2017-01-31
US9956444B2 (en) 2018-05-01
CA2954103A1 (fr) 2016-03-31
RU2690062C2 (ru) 2019-05-30
ES2618853T3 (es) 2017-06-22
AU2015321072A1 (en) 2017-02-02
RU2017104417A (ru) 2018-10-24
US20160082297A1 (en) 2016-03-24

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