CZ20122A3 - Stable fire extinguishing system, especially for tunnels and closed spaces - Google Patents

Abstract

A stable fire extinguishing system, in particular for tunnels and enclosed spaces comprising a fire extinguishing unit (1) connected to the sensors and via a switching module (13) with a control module (6) and a power supply (2) which uses an explosion to disperse the fire extinguishing agent to extinguish the fire. The fire extinguishing units (1) are arranged along both the tunnel walls (3) or the enclosed space such that each extinguishing unit (1) is positioned opposite the center between two adjacent fire extinguishing units (1) arranged at the opposite tunnel wall (3) or space. Each fire extinguishing unit (1) comprises at least two fire extinguishing segments (8) with an extinguishing charge which is arranged inside the hermetically sealed container, together with the embedment. Each extinguishing unit (1) comprises a switch module (13) with sensors for rapid and direct indication of the focal point. The individual fire extinguishing units (1) are connected to the control module (6), which is connected to the power supply (2) and to the closed data network (4).

Description

The invention relates to a stable fire extinguishing system, in particular for tunnels and enclosed spaces, comprising a fire extinguishing unit connected to sensors, a control module and a power supply which uses an explosion to extinguish a powder fire extinguisher to extinguish a fire.

State of the art

Previously known stable fire extinguishing equipment used in road tunnels uses various extinguishing agents and methods for extinguishing fires in these areas. Among the devices used so far and known, we can name devices that act flat (sprinklers, foams), where the disadvantage is that they do not act specifically on the fire. They have a considerable delay in starting the intervention. They cannot extinguish all flammable substances, such as liquids, and they can also endanger people or animals at the scene. Devices designed to target a fire, for example, according to Japanese Patent Application No. JP10066738, 1998-03-10, do not have sufficient effectiveness to extinguish larger fires. So far, the procedures for extinguishing fires in tunnels have been based on the fact that, in the presence of living beings, the primary task is to prevent the spread of the pollutants contained in the smoke to a minimum. This is achieved by running the fans located in the tunnel body. The disadvantage is that such ventilation of the fire area causes its further spread to unaffected objects located in the immediate vicinity of the fire.

U.S. Patent Application No. 60 / 710,644 discloses a tunnel fire protection system that detects a fire in a tunnel, isolates the fire, and then attempts to suppress the fire with an aerosol. Tunnel fire protection in accordance with this application comprises a fire detection system arranged in a tunnel, a system of a plurality of movable walls arranged in the axial direction in the tunnel, which are lowerable towards the road. Furthermore, a control unit connected to the detection system, to the system of movable walls for closing the tunnel section and to the aerosol generators. With this system, the fire can be isolated in the zone between a pair of walls, running towards the bottom of the tunnel, and extinguished by an aerosol. This prevents the fire from spreading to other parts of the tunnel. The disadvantage is that in this closed zone, bfrz’ka Outbreaks / mdhUU remain trapped people in vehicles that in high concentrations of smoke have no chance to escape or survive.

Another application WO / 2008/053254 describes an automatic and autonomous fire extinguishing device, the aim of which is to minimize fire extinguishing. This is to eliminate the time from automatic fire detection, which is achieved through the appropriate temperature sensors, flame sensors, IR, etc. The device has the task of completing the fire without any intervention of the equipment and personnel. This can be achieved in a closed room where a fire is located, which must be extinguished by dispersing a suitable extinguishing medium (powder, foam, liquid). Extinguishing is carried out by activating an explosive charge, located in the middle of the container with the extinguishing medium. The container is shattered when one or more sensors automatically detect a fire and activate the charge. The disadvantage of the described solution is, in particular, zero resistance to false alarms of fire sensors, which is unacceptable in the tunnel, and uncontrolled routing of the extinguishing agent, which significantly reduces the effectiveness of extinguishing. Also, an unprotected container with extinguishing agent can be easily damaged (mechanically, by fire, etc.), which also reduces the effectiveness of extinguishing.

To supplement this, we also mention the use of an extinguishing medium placed in a container, which is dispersed by means of an explosive charge. Such a method is described in British Patent No. 5405.

The essence of the invention

The object of the invention is to design a stable fire-fighting system located in enclosed spaces, in particular in tunnels, which makes it possible to detect a fire very quickly, to determine its exact location and also to eliminate it very quickly. The device also allows a trained operator to start firefighting in a targeted fire, in a very short time and with sufficient fire extinguisher capacity for large fires of substances class A, B and C according to EN 2. The trained operator eliminates false alarms and triggers individual doses of fire extinguisher the fire was liquidated as soon as possible and caused minimal damage.

The above-mentioned disadvantages are eliminated by a stable fire extinguishing system, especially for tunnels and enclosed spaces, comprising a fire extinguishing unit connected to sensors, a control module and a power supply which uses an explosion to disperse the extinguishing powder to extinguish the fire.

Its essence is that it has fire extinguishers arranged around the tunnel walls so that each fire extinguishing unit is located against the center between two adjacent fire extinguishing units, which are arranged on the opposite wall of the tunnel. Each fire extinguishing unit comprises at least two fire extinguishing segments, which are arranged inside a hermetically sealed container, together with the charge. Each fire extinguishing unit contains a switching module with sensors for quick and addressable indication of a fire, the individual fire extinguishing units being connected to a control module which is connected to both the power supply and the closed data network.

The advantages of the described stable fire extinguishing system lie in very fast detection and precise location of the fire, where a trained operator eliminates false alarms and starts extinguishing specifically at the fire, in a very short time and with sufficient fire extinguisher capacity for large fires of almost all classes. The operator runs the individual batches of fire extinguisher so that the fire is eliminated as soon as possible and causes minimal damage. Extinguishing with fire extinguishers does not endanger life or leave permanent consequences for health.

To protect the fire extinguishing units against unauthorized manipulation, it is advantageous if the extinguishing segment is formed by a housing which is provided with bolts on the front side, the other bolts forming axes of rotation of flaps intended to protect the fire extinguishing charge. fire extinguishing segment.

In order to ensure an even dispersion of the extinguishing agent, it is advantageous if the point of contact of the flaps is as long as possible, which is preferably achieved by shaping them in the form of a curve, for example a wavy line or toothing.

To ensure a targeted action of the extinguishing agent on the extinguished object, it is advantageous if the individual extinguishing units are arranged at the vertices of a triangle, as shown in Fig. 1. The distance between adjacent extinguishing units is preferably 1 to 10 m. fire extinguishing unit on the opposite wall of the tunnel. Such an arrangement has the effect that the extinguished object is targeted on all sides.

An important advantage is that with such an arrangement of fire extinguishing units, there is always a sufficient amount of extinguishing agent available, even for large fires of larger size of the extinguished object, such as a truck. This is made possible by the fact that the operator activates several fire extinguishing units.

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In addition, after a fire intervention, there is a possibility that the extinguishing agent (powder) can be removed from the fire site. It is always a quick intervention, which does not damage the tunnel, including the road and other equipment, which could result in a longer shutdown. The used fire extinguishing units will be replaced and after the tunnel will be put back into operation, the proposed fire extinguishing system will be fully functional.

Another advantage of the proposed solution is that it requires almost no construction modifications. After mounting the fire extinguishing units on the wall or ceiling, the device only requires a connection to the power supply and its own closed data network.

Overview of figures in the drawings

The invention will be further elucidated by means of the drawing, in which Fig. 1 shows a schematic arrangement of a stable fire extinguishing system with power supply and closed data network in a tunnel, Fig. 2 a fire extinguishing unit with individual segments and Fig. 3

Exemplary embodiments of the invention

The above examples show exemplary embodiments of a stable fire extinguishing system, which, however, have no limiting effect in terms of the scope of protection.

A fixed fire extinguishing system, especially for road tunnels and enclosed spaces, is shown in Fig. 1, Fig. 2 and Fig. 3. The fixed fire extinguishing system in this embodiment comprises fire extinguishing units 1 arranged at a distance on both walls 3 of the tunnel in such a way that each fire extinguishing unit 1 is located on the wall 3 of the tunnel opposite the center between two opposing fire extinguishing units 1 located on the opposite wall 3 of the tunnel, as shown in FIG. powdered fire extinguisher, see Fig. 2. Inside the powder fire extinguisher container 11, an electrically fired charge (not shown in the figures) is arranged, which provides energy for dispersing the powder fire extinguisher. The individual fire extinguishing segments 8 are covered by flaps 10, which protect the fire extinguishing containers 11 from unauthorized manipulation and also from fire. Each fire extinguishing unit 1 contains sensors (temperatures, flames, etc.) for quick and targeted indication of a fire outbreak. The control module 6 itself is connected via switching modules 13 both to the power supply 2 and to the closed data network 4 for data transmission. The control of the entire fire extinguishing system is provided by a separate application located in the computer (control module 6), in the tunnel control room.

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Each fire extinguishing unit 1 is provided with a 'switch' switch3, the integral part of which is at least two independent sensors intended for fire detection (e.g. flame, temperature, etc.). Exceeding the set idle values of these sensors at certain fire extinguishing units 1 is signaled in the software of the control application to the operator by an audible signal and graphically, and this precisely determines the place of the fire. The operator verifies this signaled fact from another independent source (eg camera) and starts extinguishing by entering a command in the control application. The command will fire one segment 8 of the selected fire extinguishing unit 1, which will ensure even distribution of one dose of fire extinguisher (powder) in the area in front of this fire extinguishing unit 1. According to information from the sensors units 1 until the fire is completely extinguished. After extinguishing the fire and removing the wreckage of the vehicles, it is sufficient to suck up the used extinguishing powder and replace the detonated segments 8 in the used extinguishing units 1 or entire extinguishing units 7, which can be reused after filling and inspection.

Another variant is the installation of the above-described stable fire extinguishing system in production areas, warehouses, buildings. The stable fire extinguishing system includes the same structural elements as described above. The individual fire extinguishing units 1 are arranged at a distance on the walls and / or ceilings and are interconnected in the manner described above.

Industrial applicability

A stable fire extinguishing system-system, especially for road tunnels and enclosed spaces, can be used for extinguishing both fires in tunnels and for extinguishing production areas, warehouses, buildings, etc.,

List of reference marks

fire extinguishing unit power supply tunnel wall closed data network roadway processor / control module display fire extinguishing segment first bolts flaps-blinds container with extinguishing charge and charge second bolts switching module

PATENT CLAIMS

Claims (5)

PATENT CLAIMS A fixed fire-fighting system, in particular for tunnels and enclosed spaces, comprising a fire-fighting unit (1) connected to sensors and a control module (6) and a power supply (2) which uses an explosion to extinguish a powder fire extinguisher to extinguish a fire, characterized in that it has fire extinguishing units (1) arranged on both walls (3) of the tunnel or enclosed space so that each fire extinguishing unit (1) is located against the center between two adjacent fire extinguishing units (1), which are arranged at the opposite wall (3) of the tunnel or enclosed space. each fire-fighting unit (1) comprises at least two fire-fighting segments (8) with a fire-extinguishing charge which is arranged inside the hermetically sealed container (11), together with the charge, each fire-fighting unit (1) comprising a switching module (13) sensors for fast and addressable indication of a fire outbreak, the individual fire extinguishing units (1) being further connected to a control module (6), which is connected both to the power supply (2) and to the closed data network (4). Stable extinguishing system according to claim 1, characterized in that the extinguishing segment (8) forms a housing which is provided on the front side with first bolts (9) and second bolts (12) on which flaps (10) are rotatably arranged. . Stable extinguishing system according to claims 1 and 2, characterized in that the shape of the flaps (10) at the point of their contact has the shape of a curve, preferably a wavy line or toothing. A stable extinguishing system according to claim 1 or 2, characterized in that the extinguishing charge is a powder extinguisher. A stable fire extinguishing system according to claim 1 or 2, characterized in that it has fire extinguishing units (1) arranged on the ceilings of the room.