DE102015003034A1 - Fire extinguishing system - Google Patents

Abstract

A fire extinguishing system with an extinguishing agent container and secondary container for additional liquids is equipped for several components so that at least one of the components can be stored separately from the others in the extinguishing agent container in a separate container. In case of fire, all components are synchronously filled under pressure into the extinguishing agent tank and mixed with the extinguishing agent. The sub-containers are closed with one inlet valve and one outlet valve. Each can be connected by the respective inlet valve with the compressed gas source and by the respective outlet valve with the extinguishing agent container and removed in the closed state the extinguishing agent tank.

Description

The invention relates to a fire extinguishing system with an extinguishing agent container, in which sub-container for additional liquids are arranged.

Such a fire extinguishing system according to the preamble of claim 1 is known as a hand-held fire extinguisher by the EP2666519A2 such as DE 42 24 891 A1 ,

The peculiarity of such fire extinguishing systems is that in the extinguishing agent containers cartridges - referred to in this application as sub-tank - are arranged. The extinguishing agent container is with the extinguishing agent, for. B. water filled with some additives.

In the secondary tanks additional liquid are stored, which are added to the fire extinguishing agent in case of fire.

To use the fire extinguishing system, the sub-tank via an inlet valve directly or via the extinguishing agent tank with a compressed gas source -. B. a print cartridge that is filled with CO2 connected. By the connection with the compressed gas source, the sub-tanks are pressurized. As a result, an outlet valve opens at each secondary tank and the additional liquids present in the secondary tanks pour into the extinguishing agent tank, mix with the extinguishing agent, eg. As water and are sprayed to extinguish a fire. For maintenance and service of the fire extinguishing system, however, the sub-tank must be renewed or refilled from time to time and then there arises the problem of disposal.

The additional liquids consist of several components. These additional liquids or their components should the extinguishing agent special properties, eg. B. lathering give. Some of these components should not get into the sewage or groundwater. At least the dangerous components, eg. B. the foam-forming surfactants z. B. Fluorosurfactants are housed in the known extinguishing agent container in separate and sealed storage containers / secondary containers, the secondary containers can be separated and removed from the extinguishing agent container. However, they must then be refilled for disposal or for refitting the fire extinguisher during maintenance.

The object of the invention is to simplify the disposal and maintenance.

The solution results from claim 1.

Here, on the one hand a good mixing of the components is guaranteed as soon as the pressurization of the extinguishing agent container takes place, since the secondary containers are connected in series. Nevertheless, the sub-tanks / sub-tanks remain independent of each other, d. H. do not communicate as long as the fire extinguisher is not needed. Because at least the secondary / partial container with dangerous components remain closed by valves that are openable only in case of fire by pressing the fire extinguishing system. It is therefore not necessary when filling the secondary container with the additional liquid to mix the components together or to dispose of the additional liquid as a whole safely without environmental pollution during maintenance. Rather, the hazardous components can be delivered in the storage container. This sub-tank has an inlet valve at the top and opposite, that is an outlet valve at the bottom. The valves are separate from each other constantly and apparently. The filling of this storage container can be done in a safe place, which is set up so that any pollution, especially water pollution is excluded.

It is according to the invention also ensured that the individual sub-containers can be arranged to save space in the extinguishing agent container and that the emptying of all sub-containers in the extinguishing agent tank is done simultaneously by pressurization.

The inlet valves may communicate with the upper gas-filled interior of the extinguishing agent container and be openable by the increased pressure that arises in this interior, when the interior connected to the pressure source - z. B. the housed in the interior print cartridge is opened in case of fire.

Alternatively and preferably, the inlet valves are connected directly to the pressure source via a connecting line and are apparent by the increased pressure in the connecting line when the pressure source z. B. the print cartridge is opened in case of fire.

The exhaust valves are in particular designed as check valves and are closed by a spring against the interior of the sub-tank and opened when pressurized the inner sub-tank. The outlet valve may also be a predetermined breaking point in the lower part of the container in particular, which bursts when pressure of the sub-container so that the liquid component concerned in the next sub-container or in the extinguishing agent escape and can mix with the other components and the extinguishing agent.

At least one of the components is thus stored separately from the others in one of the sub-containers; however, all components are simultaneously expelled from their sub-containers for mixing with the extinguishing agent in the extinguishing agent container.

The design of the intake valves according to claim 5 provides intake valves, on the one hand allow a secure closure and thus secure storage of a component, on the other hand, however, the synchronous opening and the synchronous pressurization at low opening and forward resistance.

Although the design of the intake valves according to claim 6 has the disadvantage that the clamped predetermined breaking plate is used only once. However, it has the advantage of providing a secure closure that is resistant to aging and insensitive to contamination. Its installation is very simple when a tool suitable for clamping is ready.

The secondary tanks in this form allow the adaptation to very slim extinguishing agent container, so z. B. slender portable fire extinguishers, since the sub-containers are arranged one behind the other, such that one opens into the other, however, is closed by at least one connecting valve, which opens by pressurizing the preceding sub-container. Only the uppermost of the sub-containers is connected via the inlet valve directly or indirectly via the interior of the extinguishing agent container with the pressure source. Only the last lowermost sub-container has on its underside the outlet valve and can be connected via this with the extinguishing agent container. This series connection of the sub-containers has the advantage that the stored components are already thoroughly mixed when expelled from the chain of sub-containers before they reach the interior of the extinguishing agent container.

It is also ensured that the components individually, d. H. can be delivered and disposed of in separate sub-containers. Because the sub-containers can be separated without having to be opened. This is not necessary for all sub-containers of the chain, but only for the sub-containers, which are to receive a dangerous component.

• • oberste Teilbehälter: oben durch Einlaßventil: unten durch ein Verbindungsventil, der
• • unterste Teilbehälter: oben durch ein Verbindungsventil, unten durch das Auslaßventil, und ein
• • mittlerer Teilbehälter: durch Verbindungsventile oben und unten) flüssigkeitsdicht verschlossen.

Generally, the

• • top part container: top by inlet valve: bottom by a connecting valve, the
• • Lowermost tank: at the top through a connecting valve, at the bottom through the outlet valve, and on
• • middle part container: through connecting valves at top and bottom) sealed liquid-tight.

To design two subsequent sub-containers to separate stores, two connecting valves are provided between them, for. B. in the form of each of a predetermined breaking valve, one of which is intended for the upper, the other for the lower part of the container; between both a mechanical coupling, cable gland or the like. Provided by which the sub-containers can be separated from each other.

It is a very space-saving design with large storage volume, which is both favorable for storage, installation and maintenance of the fire extinguishing system, but still allows easy replacement and / or easy disposal of hazardous components by replacing the affected sub-container.

The development according to claim 2 has the advantage that sub-containers of any size and shape can be switched behind each other. It is not necessary that the sub-containers are aligned. Such a design is suitable for larger fire extinguishing systems or for such fire extinguishing systems, which also require special additives or their components because of their special fire class.

The development according to claim 3 is characterized by the maximum large volume of the sub-container, as is dispensed with any constricted connection area.

Two or more such sub-containers can be screwed together. The assembly is very simple and hardly flawed, since preferably predetermined breaking points, bursting membranes are used as connecting valves. But also check valves are possible. At least one of the sub-tanks is liquid-tight after release of the coupling by valves (the top sub-tank: top by inlet valve: bottom by connecting valve, or the bottom sub-tank: top by connecting valve, bottom by outlet valve, or the middle sub-tank: by connecting valves top and bottom) closed, so that dangerous liquids can be stored in it. This solution is particularly suitable when the additional liquid is to contain a limited number - not more than 3 - of liquid components.

The development according to claim 2, however, has a greater flexibility in terms of the number of components of the additional liquid and provided for the components part of container. It can be a chain of more than 3 sub-containers are formed by the releasable coupling between each two immediately following sub-containers.

In the following the invention will be described by means of exemplary embodiments.

Show it:

1 the longitudinal section through a fire extinguisher

2 Detail view of the cartridge after 1 With

3A sectional figure

3B Cut figure with screw connection

4 alternative to 2 . 3

In all drawings, the same reference numerals are used for similar parts.

The description applies to all figures, unless special features of a single figure are explicitly highlighted.

1 shows as fire extinguishing system a hand fire extinguisher with the extinguishing agent container 1 ,

This pressure-resistant container 1 The hand fire extinguisher has a circular cylindrical open neck 2 , The waistband fits in this neck 4 a closure head 3 , which by means of a clip, not shown on the container 1 is pressure resistant. The closure head can z. B. made of brass or a plastic. The bolt head 3 has a hose nozzle 5 for attaching a fire hose with the attached metering valve ( 5 ) (both not shown here). The hose connection is via outlet channel 6 and riser 7 connected to the interior of the container. The riser 7 Essentially, it reaches to the bottom of the container so that the container can be completely emptied.

The container is filled with water. He is pressurized by a print cartridge 8th , in which a pressure medium, for. B. compressed air, CO _{2 is} stored. The print cartridge 8th is so in the mouth of a pressure channel 9 attached to the closure head so that it protrudes with the closure head in the container.

To open the print cartridge 8th becomes - as only schematically indicated here - a valve plate 10 which the print cartridge 8th closes, by means of a percussion ram 11 destroyed. The percussion ram is aligned with the central axis of the print cartridge 8th and to the likewise aligned ascending branch 13 the pressure channel sliding and at the same time sealingly guided in the closure head.

The pressure channel 12 is guided in the closure head U-shaped. On its free mouth is a pressure pipe 9 set, which with the filling opening 19 of the sub-container 14.1 via an inlet valve 15 - Formed here as a spring-loaded check valve - is connected pressure-resistant.

The cartridge, that is the secondary container 14 has in this case two sub-containers 14.1 and 14.2 on which are mounted one behind the other and connected to each other.

2 shows in detail such sub-containers in a chain of three sub-containers 14.1 14.2 and 14.3 ,

The through pressure tube 9 Part containers directly connected to the print cartridge 14.1 owns in its inlet opening 19 the inlet valve 15 , a check valve, by spring pressure in its closed position and by pressurizing the pressure tube 9 (or the inner extinguishing agent container) is opened.

On its other outlet side is the subcontainer 14.1 by means of an outlet 6 with the inlet port of the second sub-tank 14.2 bolted and down through the exhaust valve 16 , a check valve, closed. For this purpose, the outlet nozzle has an internal thread and the inlet nozzle a matching external thread (or vice versa). The two sub-containers are thus rotated against each other for connection.

As a coupling for connecting two partial containers, a connecting pipe is also suitable 17 , on the one hand by means of right-hand thread on (or in) the outlet 6 the first part of the container and on the other hand by means of left-hand thread on (or in) which is screwed to the inlet port of the subsequent sub-container, 3B , In this embodiment, the sub-containers are not rotated against each other but the connecting tube is rotated in one direction to connect and disconnect inlet and outlet ports.

At internal pressure of the sub-tank 14.1 opens the check valve to the outside, without pressure, however, it is held by a compression spring in the closed position.

The second part container 14.2 is closed by screwing on the first part container.

In the same way, with the second of the third part of the container 14.3 connected.

The third part container 14.3 is down with a breaking point 23 in the area of his soil 22 Mistake. The breaking point is created by a Weakening of the jacket, which propagates in particular on a generatrix.

In the area of their connection pieces form the sub-containers 14.1 and 14.2 such as 14.2 and 14.3 a constriction. Furthermore, the entire secondary tank 14 In addition to this constriction on his back along a common generatrix also a recess. As 2 . 3 show, the subtank 14 in the area of these constrictions by means of a cable tie 20 attached, so that he is with the indentation to the riser 7 snugly.

To the function:

If at the hand fire extinguisher the striker 11 is knocked down, the rupture disc 10 Broken and the print cartridge 8th open.

The inlet valve 15 and the exhaust valve 16 each of the subcontainers (in 1 : 14.1 . 14.2 ; in 2 : 14.1 . 14.2 . 14.3 ) including the predetermined breaking point are now designed so that they open under the now emerging pressure. As a result, the liquid components are driven from one to the other sub-tank and finally expelled into the extinguishing agent tank, where they mix with the extinguishing agent.

On the other hand, if there is no fire during the life or maintenance period of the fire extinguishing system, the sub-containers may be removed, singulated and otherwise used or disposed of in the proper manner.

The amount of liquids to be disposed of is relatively low because the hazardous substances can be stored separately and disposed of separately or otherwise used.

4 also shows the detail view of a secondary container 14 , This secondary container is functionally comparable to the embodiment according to 1 to 3 because here too the sub-containers are arranged one behind the other and connected to one another and to the extinguishing agent container. Shown is a series of - here only - two sub-containers 14.1 . 14.2 , These are circular cylindrical running in the region of their end with substantially the same diameter and provided with threads. They can be screwed together liquid-tight here.

The first part container 14.1 is via a designed as a check valve inlet valve 15 to a pressure tube 9 connected, which in turn with the pressure channel 12 is firmly connected. The pressure tube 9 is designed so stiff that it simultaneously serves as a holder for the secondary container 14 can serve. The inlet valve 15 is closed by spring force in the outlet direction.

The first part container 14.1 is open at the bottom. It is made by screwing in the second part container 14.2 locked. This part container 14.2 has on its bottom surface, which projects into the first part of container, a bursting valve 23 in the form of a thinned jacket area. On the opposite side has the part container 14.2 an exhaust valve 16 in the form of a check valve. This check valve opens when pressure in the outlet direction of the sub-tank 14.2 and is held by spring force in its closed position.

It can be seen that when filling the sub-container 14.1 with its top down and filled. He is then by screwing the sub-container 14.2 locked. Now, the part container 14.2 be filled. Appropriately, hazardous components in this sub-container 14.2 filled, as this remains closed even after removal.

When the impact ram is actuated 11 becomes the first part container 14.1 over pressure pipe 9 pressurized with the inlet valve 15 opens. By the pressure in the sub-container 14.1 bursts the breaking point 23 and it opens the exhaust valve 16 , so that both liquid components can discharge into the extinguishing agent container.

LIST OF REFERENCE NUMBERS

1

Extinguishing agent container 1

2

open neck 2 , Opening, circular cylindrical opening of the extinguishing agent container

3

bolt head 3

4

Bund, approach 4

5

metering valve 5

6

Outlet duct outlet 6

7

riser 7

8th

Print cartridge, compressed gas cylinder, compressed gas source 8th .

9

pressure pipe 9

10

valve plate 10 rupture disc

11

Impact tappet emergency valve 11

12

U-shaped pressure channel 12

13

ascending branch 13 of the pressure channel

14

Cartridge, secondary container

14.1

part container

14.2

part container

14.3

part container

15

Inlet valve, check valve

16

Exhaust valve, check valve

17

connecting pipe 17

18

Rupture disk, closing valve

19

Filling opening, inlet connection 19

20

Tape, cable ties 20

21

Lock 21

22

ground 22

23

Breaking point 23

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2666519 A2 [0002]
• DE 4224891 A1 [0002]

Claims (6)

Fire extinguishing system with an extinguishing agent container, in which a plurality of auxiliary containers for additional liquids are arranged behind each other, wherein the uppermost of the sub-container is connected via an inlet valve to the pressure source, and the last lowermost sub-container has an outlet valve on its underside and is connectable via this with the extinguishing agent container, and wherein adjacent sub-containers are connected to each other through a communication valve, which is manifested by pressurizing the preceding sub-container, such that, by the connection of the uppermost of the sub-container to the compressed gas source, the internal pressure of the sub-containers communicates between the adjacent sub-containers and the connecting valve Exhaust valve of the bottom of the sub-container opens and expels the additional liquids from the sub-containers in the extinguishing agent container and the extinguishing agent admixed, characterized in that the s the subcontainers ( 14.1 . 14.2 . 14.3 ) are connected by a releasable coupling and that the valves are arranged such that at least one of the sub-container is liquid-tightly closed after release of the clutch by valves, namely • the top part of the container: top by inlet valve, below by connecting valve, or • the lowest part of container : above through connection valve, below through outlet valve, or • a middle part container: through connection valves at top and bottom Fire extinguishing system according to claim 1, characterized in that the releasable coupling between two immediately following sub-containers is formed by the fact that the sub-container by a connecting line with releasable mechanical coupling ( 17 ) and by a disclosed by pressure in the direction of the subsequent partial container connecting valve in the form of a predetermined breaking point, z. As bursting membrane or the like. Or a spring-loaded against internal pressure of the upper part of container ball or plate valve are liquid-tightly closed. Fire extinguishing system according to claim 1, characterized in that the detachable coupling between two immediately following sub-containers is formed by the fact that the sub-containers are opposite with the same circular cylindrical end portions which are screwed liquid-tight with each other, and that one of these immediately following part container on his screwed End region by a connecting valve in the form of a predetermined breaking point, z. As bursting membrane or the like. Or a spring-loaded against its internal pressure ball or plate valve is liquid-tightly closed. Fire extinguishing system according to claim 1, characterized in that the sub-containers are constructed substantially the same shape and volume, preferably cylindrical. Fire-extinguishing system according to claim 1, characterized in that one of the intake valves and / or exhaust valves is designed as a ball or flap valve and closes against the inlet direction druckfederbelastet and opens by applying pressure against the force of the compression spring. Fire extinguishing system according to claim 2, characterized in that one of the intake valves and / or exhaust valves is permanently closed by a clamped predetermined breaking plate which bursts when pressurized.

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