DE102009018501A1 - Fire extinguishing system for closed storage tank system, has water spray nozzles implementing extinguishing process during thermal activation such that amount of water is reduced at regions of storage tank system - Google Patents

Abstract

The system has water spray nozzles (1) arranged at a preset position in regions (D) of a storage tank system. The nozzles are connected to a pre-pressurized pipeline system (2) of a public water piping system, a sprinkler system or spray mist production system. The nozzles implement an extinguishing process during thermal activation such that specific minimum amount of water is supplied to spatial volume in case flooding of the regions and amount of water is reduced at the regions of the storage system.

Description

Technical area:

at the invention is a fire extinguishing system with water or Water mist according to the well-known fire extinguishing principle sprinkler system. Relevant The aim of the invention is to reduce the amount of extinguishing water compared to relevant, conventional Technology. In particular, however, a significant corresponding thereto Reduction of secondary damage by size Fire water quantities.

The inventive conception is new in the aforementioned task and in practical use especially for technical storage systems, d. H. closed storage containers with Circulating shelves or lift systems designed. In this - highly sensitive to water damage - area fails the use of conventional water fire extinguishing systems at the extremely high consequential damage risk, because beside the stored goods the storage system will be destroyed as well.

The technical conception of the water fire extinguishing system according to the invention reduces the risks to the technically feasible minimum without Reduction of for the primary deletion required amounts of water.

Presentation of the invention

task The invention is a secured fire extinguishing a Genungsbrandes in the interior of a storage container system after the tried and tested Principle: fire extinguishing with water or mist.

essential Distinguishing feature conventional, more relevant Fire Extinguishing Equipment with water (sprinkler system) is the definition and assignment of with extinguishing water To be acted upon areas of the storage container system. conventional Technology provides that in the case of application, regardless of the specific position the conflagration, extinguishing water flooding of the entire interior, taking the real requirement in principle only on a z. T. extremely small area of use of the storage container system reduced. Consequence = extremely high consequential damage due to unused, excess extinguishing water flooding.

In the concept of the invention the disadvantages are eliminated in that essentially only the required amounts of water are used, the real required for fire fighting are.

This Target is achieved problem-free when the storage bin system is divided into several fire compartments and produced in this way Individual areas in the application with the specific required Water requirement be charged.

so required for proper function Fire sections / individual areas need not produced, because they arise from the conception and use of storage container systems in the manner of largely closed shelf chambers.

Latter can - accordingly the individual, practical employment in the temporary change in different sizes (room volume) - accordingly the number of shelves used.

hereupon justified is the intended fire extinguishing technology designed for the storage system specific smallest possible single area.

additional Feature of the fire extinguishing system according to the invention is the targeted discharge of extinguishing water (used or unused) from the single area (fire compartment) of the storage container system via corresponding relevant Components in the area outside of the storage container system or directly in drainage systems.

in the Result - dominant reduced extinguishing water use in conjunction with targeted extinguishing water discharge reduce potential secondary damage the minimum size that can be produced.

The Disadvantages relevant, conventional fire extinguishing systems are eliminated transparently - the material Additional work is not realistic in relation to the alternative risk potential.

I Storage tank system cross section

II Lageberhältersystem plan view

III Single area (extinguishing water flooding)

IV Single area (air circulation)

V Extinguishing water drainage

A

Storage tank system

B

storage area or subarea

C

free space (Transportation)

D

Single area (Shelf Chamber)

e

shelf (Storage compartment)

F

Duct / pipe channel

G

electric motor (Delivery mechanism)

1

Water spray nozzle (water / water mist) with thermal release

2

Water pipe system

3

housing sleeve

4

wall recess

5

Luftnachströmöffnung

6

Fire water runoff channel / tube

7

Extinguishing water runoff (Shelf)

8th

Extinguishing water drain in canal system

9

Z-profile (defined extinguishing water drainage)

10

barrier (with electric motor)

11

fire sensor (Smoke / heat)

12

Water trough

Embodiment:

Technical structure / function

Technical structure:

The storage container system (A) ( I and II ) is subdivided into the subareas clearance (C) and storage area (B). The latter is divided into several fire sections - insofar individual areas (D) - divided.

In the subregions which are produced from shelves (E), wall recesses (in particular in at least one side wall) are preferably 4 ), in which a housing sleeve ( 3 ) is positioned. In that regard, a connection between the airspace of the single area (D) and the adjacent, at the top of the storage system (A) open, air shaft (F) is made. In the duct (F) is the vertical water pipe system ( 2 ) for supplying the water spray nozzles with thermal tripping ( 1 ) intended.

The latter are in the center of the free cross section of the housing sleeve ( 3 ) ( III / IV ). On the front side of the storage container system (A) is an air supply opening ( 5 ). In the water pipe system ( 2 ) outside the storage container system (A) there is a barrier ( 10 ) to activate or shut off the fire water from a sprinkler system or from the public network.

Water performance and spray behavior of the water spray nozzles ( 1 ) are dimensioned to the specific requirements of the storage system specific, smallest possible / producible volume of a single area (D).

Preferably, at the back of the storage container system (A) is a vertical extinguishing water discharge channel or pipe ( 6 ) with openings on the front for receiving the extinguishing water processes ( 7 ) from the shelves (E). Z-profiles ( 9 ) in the extinguishing water outflow channel ( 6 ) above / behind the extinguishing water outlet ( 7 ) ensure the intended extinguishing water runoff.

The extinguishing water disposal in the "free" or in the public sewage network via the drain line ( 8th ).

The electric motor (G) of the conveyor mechanism is in a water collecting tray ( 12 ) with drainage pipe ( 8th ).

In the air ducts (F) are at the top of fire sensors ( 11 ) - another or alternative fire sensor ( 11 ) can be positioned at the top inside the storage container system (A).

Function:

• • Durch Luftzirkulation über den/die Luftschächte (F)(I/II/IV) im Wirkverbund mit der Luftnachströmöffnung (5) durch Konvektion und/oder Strahlungswärme innerhalb eines Einzelbereiches (D)(IV) erfasst die thermische Auslösung der Wassersprühdüsen (1) die Temperatur der umgebenden Luft und/oder Wärmestrahlung. Bei Überschreitung einer vorbestimmten Temperatur im Einzelbereich (D)(IV) (z. B. 57°C) ursächlich eines Entstehungsbrandes- erfolgt Auslösung der Wasser- oder Sprühnebelflutung über die über das Wasserrohrsystem (2) unter Vordruck stehenden Wassersprühdüsen (1) – Situation Löschvorgang- Das dem Einzelbereich (D) zugeführte Löschwasser fließt über den Löschwasserablauf (7) im Regalboden (E) in den Löschwasserabflusskanal (6) und wird entsorgt über den Löschwasser abfluss (6) ins Kanalsystem (8), jedenfalls in weniger sensible Bereiche außerhalb des Lagerbehältersystems (A). Prinzipiell gleichartig erfolgt der Löschvorgang des Sonderbereiches Elektromotor (G). Zur Vermeidung von Fehlleitungen im Löschwasserabfluss sind im Löschwasser- Abflusskanal (6) im Bereich der Löschwasserabläufe der Regale (7) Z-Profile (9) angeordnet.
• • Parallel zum autarken thermisch-mechanischen Löschvorgang kann elektronische Alarmgabe über Brandsensoren (11) hergestellt werden. Letztere sind vorzugsweise in den Luftschächten (F) an der Oberseite innerhalb des Lagerbehältersystems (A) oder im Bereich des Elektromotors (G) positioniert.
• • Über ein Absperrventil (10) im Wasserrohrsystem (2) kann zu gegebener Zeit (Feuerwehr vor Ort) die Löschwasserzufuhr abgestellt werden.

In the case of a configuration of a storage container system (A) defined in the technical structure, the following functional sequence results:

• • Through air circulation through the air shafts (F) ( I / II / IV ) in operative connection with the Luftnachströmöffnung ( 5 ) by convection and / or radiant heat within a single area (D) ( IV ) records the thermal release of the water spray nozzles ( 1 ) the temperature of the surrounding air and / or heat radiation. When exceeding a predetermined temperature in the individual range (D) ( IV ) (eg 57 ° C) the cause of an initial fire is the triggering of the water or spray flood via the water pipe system ( 2 ) under pre-pressurized water spray nozzles ( 1 ) - Situation deletion process - The extinguishing water supplied to the individual area (D) flows via the extinguishing water outlet ( 7 ) in the shelf (E) in the extinguishing water drainage channel (E) 6 ) and is disposed of via the extinguishing water drain ( 6 ) into the channel system ( 8th ), at least in less sensitive areas outside the storage container system (A). In principle, the deletion process of the special area electric motor (G) takes place. In order to avoid faulty lines in the extinguishing water drain, the extinguishing water drainage channel ( 6 ) in the area of the extinguishing water drains of the shelves ( 7 ) Z-profiles ( 9 ) arranged.
• • Parallel to the self-sufficient thermal-mechanical extinguishing process, electronic alarms can be given via fire sensors ( 11 ) getting produced. The latter are preferably positioned in the air ducts (F) at the top inside the storage container system (A) or in the region of the electric motor (G).
• • via a shut-off valve ( 10 ) in the water pipe system ( 2 ) can be turned off in due course (fire department on site) the fire water supply.

Claims (22)

Fire extinguishing system with water or water mist for storage containers / storage racks in particular closed storage container systems (A) with automatic assembly, suitable for the need-based, self-sufficient, extinguishing agent-reducing fire fighting of individual fire sections - insofar of specific individual areas (D) (racking chambers / levels, etc.) of the storage container system (A ), characterized in that in each individual area (D) of the storage container system (A) at least one water spray nozzle with thermal release ( 1 ) (Glass barrel) is arranged at a suitable position - the water spray nozzles ( 1 ) to a submerged pipe system ( 2 ) are connected to the public water pipe network or a sprinkler system or a spray mist production plant - accordingly when activated by thermal release of one or more water spray nozzles ( 1 ) the extinguishing process - as a result flooding of the specific individual area (D) of the storage system (A) is initiated by the specific volume of space a predeterminable minimum amount of water is supplied - the latter can be reduced to the storage system specific smallest possible producible single area (D). Apparatus according to claim 1, characterized in that for the fire detection a permanent air circulation in the storage container system (A) is provided such that in the sides and / or rear walls of the individual areas (D) at least one wall recess ( 4 ) to a vertical, preferably outside of the storage container system (A) arranged, air duct (F) is provided and by this arrangement via a Luftnachströmöffnung ( 5 ) on the lower front side of the storage container system (A) ensures constant air flow of outside air by natural and / or thermal buoyancy, that in the center of the Wandausnehmung ( 4 ) positioned water spray nozzle with thermal release ( 1 ) critical temperature increases registered in the shortest possible time - in consequence of the activated thermal activation ( 1 ) Water or water misting occurs. Device according to claim 1 and 2, characterized in that the advantageous natural air circulation in the duct (F) alternatively optimized mechanically via a fan can be. Apparatus according to claim 1 to 3, characterized in that in the duct (F) or in the air flow of a fan, a fire sensor ( 11 ) can be used to trigger visual / audible alarm. Device according to claim 1 to 3, characterized in that the vertical water pipe system ( 2 ) is disposed within the vertical duct (F). Device according to claim 1 to 5, characterized in that areas with increased fire risk, for example, the area position electric motor (G) of the conveyor mechanism, with elevated Water supply is applied. Device according to claim 1 and 3, characterized in that the water spray nozzles ( 1 ) in the center of the wall recess ( 4 ) in the storage container outer wall with a housing sleeve open on both sides ( 3 ) are equipped for heat shielding - thus positionally determined safe, in accordance with the principle thermal initiation of Inertgassprühdüsen ( 1 ) is manufactured in accordance with the intended purpose and system-adverse thermal influence on further inert gas spray nozzles ( 1 ) is largely excluded. Device according to claim 1, characterized in that the water spray nozzles ( 1 ) from the housing ring ( 3 ) in the wall recess ( 4 ), are positioned outside the traffic area of the storage system operation - as far as false tripping by mechanical damage are excluded. Device according to claims 1 to 8, characterized in that in the water pipe system ( 2 ) a shut-off device ( 10 ), optionally with electric drive, is provided. Device according to claim 1, characterized in that as water spray nozzles ( 1 ) known from the field of sprinkler "sprinklers" can be used in a specific modification of the spray plate and the nozzle. Device according to claim 1 to 10, characterized in that components (duct) the fire extinguishing system can be dimensioned in such a way that in the second function in combination with additional, specific components one Room air conditioning of the storage tank system extremely rational can be produced. Device according to claim 1 to 11, characterized in that the water flooding by closing the shut-off device with electric motor ( 10 ) can be switched off or disconnected manually via timer units or manually. Apparatus according to claim 1 to 12, characterized in that to avoid extinguishing water damage the bearing surfaces (E) are provided with all-round circumferential upstand - insofar as "tubs" ( 12 ) are formed, which at any position, preferably at the back, a water drain neck ( 7 ) - the latter (in storage position) has a direct connection to a central extinguishing water drainage channel ( 6 ). Apparatus according to claim 1 to 13, characterized in that preferably at the rear (inside) of the storage container system (A) a vertically to the specific height of the storage container system (A) sized water channel / pipe ( 6 ) for the secured damage-free discharge of extinguishing water in the outer area of the storage container system (A) or in a sewage pipe network ( 8th ) is provided. Apparatus according to claim 1 to 14, characterized in that in the extinguishing water drainage channel ( 6 ) above the introductions for the extinguishing water outlet ( 7 ) preferably Z-profiles ( 9 ) are arranged to prevent misdirection of the extinguishing water drain. Apparatus according to claim 1, characterized in that the electric motor of the conveying mechanism (G) in a water collecting tray ( 12 ) or the like is set up with free flow to the outside and the spray cone of the risk associated with this water spray nozzle ( 1 ) on the dimensions of the water sump ( 12 ) is dimensioned. Apparatus according to claim 1, characterized in that the over all water spray nozzles ( 1 ) in the individual areas (D) of a storage tank system (A) of a specific size theoretically corresponds to the amount of water theoretically available with water spray nozzles ( 1 ) for the entire storage system volume (A). Device according to claim 1 to 17, characterized in that the thermomechanical (spray nozzles with thermal design ( 1 )) self-triggering fire extinguishing system is combined with an equally self-sufficient, electronic (sensor for smoke and / or heat emissions) fire detection system. Apparatus according to claim 1 to 18, characterized in that a combination of water fire extinguishing system with spray fire extinguishing system on the determination of the water spray nozzles used ( 1 ) and their supply facilities can be produced. Apparatus according to claim 1 to 19, characterized in that when using so-called sprinkler safety valves with thermal release - positioned in the duct - at least two individual areas can be flooded together - here the water spray nozzles ( 1 ) have no thermal release in the respectively assigned individual areas. Device according to claim 1 to 20, characterized in that the air shaft (F) with vertical water pipe system ( 2 ) and the extinguishing water drainage channel ( 6 ) are preferably positioned in cavity contours of the storage container system (A) or that such contours are modified to the use of the fire extinguishing system. Device according to claims 1 to 21, characterized in that water spray nozzles ( 1 ) are used, the amount of water and spray behavior to the needs of the individual area (D) are measured with specific smallest volume of space.