RU201447U1 - Powder extinguishing device - Google Patents

Abstract

The utility model relates to the field of single-use fire-fighting technology, specifically to autonomous fire-extinguishing devices, in which the fire-extinguishing agent is thrown out by means of an explosion. A powder fire extinguishing device, in which the body is made of non-combustible foamed polystyrene foam with a density of at least 30-35 kg / m3, looks like a cube, while the edges are rounded at the corners, inside the body there is a fire extinguishing agent and an initiating element made in the form of a firecracker equipped with a group fire-conducting cords - a waterproof stop, the ends of which extend outward at the places where the body is closed through special grooves and are evenly fixed on the outer surface of the device body, while in the places of possible contact of the stop with fire, the fire wires are freed from the outer sheath to reduce the response time. The filling hole is located at the maximum distance from the closing edges of the body, which, after filling and compaction of the fire extinguishing powder, is sealed with elastic adhesive / sealant. Underneath a PVC shrink wrap that insulates the body in three layers to protect it from damage and environmental influences, while the last two layers have an adhesive backing at the edges to prevent liquid or moisture from entering. 1 wp f-ly; 4 ill.

Description

The utility model relates to the field of single-use fire-fighting technology, specifically to autonomous fire-extinguishing devices, in which the fire-extinguishing agent is thrown out by means of an explosion.

The prototype is an autonomous self-triggering fire extinguishing device (patent RU 184841 dated 12.11.2018).

The prototype discloses a self-triggering fire extinguishing device containing a housing, inside which an explosive device is placed, connected to a fire-conducting cord coming out through an opening in the housing, and a fire-extinguishing agent, while the housing is made of foam, and said opening for the fire-conducting cord passes through a recess closed around the housing, made from its outer side, the width of which exceeds the width of the fire-conducting cord, the outer part of which is laid in it, while grooves are made on the inner side of the housing, facilitating its destruction when the explosive device is triggered.

The disadvantage of the device described above is that the proposed construct requires the use of a large number of sealing means for sealing, which, as a rule, are not elastic, and, accordingly, when the device is triggered, they can be traumatic.

The disadvantages can also be attributed to the fact that the housing, made of polystyrene, can cause repeated ignition (fire), the ignition of the housing can be a consequence of the burning of a fire-conducting cord or contact of the housing with the fire.

In addition, during operation, the outer coating - thermal film can be exposed to mechanical damage, which can facilitate the penetration of moisture and liquids, which makes it difficult to operate in high humidity conditions.

The task of the utility model is to expand the arsenal of technical means in the field of fire fighting equipment.

The technical result is to minimize the response time of the device and uniform dispersion of the extinguishing agent in the fire.

The technical result is achieved by a powder fire extinguishing device, in which the body is made of non-combustible foamed polystyrene foam with a density of at least 30-35 kg / m3, is made in the form of a cube and consists of an upper bowl and a lower bowl, while the edges are rounded at the corners, inside the body a fire extinguishing agent and an initiating element, made in the form of a firecracker, equipped with a group of fire-conducting, moisture-resistant stops, while in order to reduce the response time of the device in places of possible contact of the stop with fire, located along the edge of the stop device is freed from the shell, the ends of the stop are evenly distributed and fixed on the outer the surface of the device body under a PVC shrink film, which insulates the body in three layers to protect it from damage and environmental influences, while the inner edges of the second and third layers of PVC shrink film are sealed with waterproof glue.

The filling hole is made on the upper shell of the body, without touching its edges.

The utility model is illustrated by drawings 1-4:

FIG. 1 shows a view of the device without PVC film.

FIG. 2 top bowl with filling hole and plug.

FIG. 3 lower bowl with a firecracker and pyrocords (stops).

FIG. 4 shows the device in section.

General view in figure 4 illustrates in detail a device that has a housing 1 with a fire extinguishing agent 2 and an initiating element 3 (firecracker). The body 1 of the device is made hollow in the form, the cube of the edges of which are rounded, inside which the extinguishing agent 2 and the initiating element 3 are placed.

The initiating element - a petard 3 is equipped with at least one group of fire-conducting cords 4, the ends of which are brought out to the outer surface of the body 1 and are fixed on it.

The fire-conducting cords are made of moisture-resistant stopin, which prevents malfunctioning in case of moisture penetration through the gaps between the layers of the heat-shrinkable polyvinyl chloride film. In this case, the places of possible contact of the fuses with fire, in order to reduce the response time, are freed from the outer layer of the shell, so that at the places where the fuses are inserted into the body, the outer shell remains at least two centimeters. The introduction of the fire-conducting cords into the body is made on the muds of the body halves of Fig. 3, which makes it possible to reduce the number of body openings, thereby increasing its tightness and the integrity of the body.

A heat-shrinkable film (not shown) is applied to the outer surface of the housing 1 over the fuse cord 4 of the initiating element 3 located on it. Shrink polyvinyl chloride film is applied in three layers to improve the tightness, while the first layer is made of transparent film to maintain color uniformity. Subsequent layers are applied with the edges treated with glue, which provides additional sealing of the device against the penetration of moisture with air and liquids if it accidentally hits the device.

The initiating element 3 is located inside the housing 1. The initiating element is a firecracker. Manufactured in a serial manner with accurate gram components to ensure the actuation force is identical from device to device, which ensures a safe use.

The ends of the groups of fuse cords 4 of the initiating element 3, brought out to the outer surface of the body 1, are evenly spaced over the surface of the body 1.

The body 1 is assembled from parts made of materials with a density of at least 30-35 kg / m ³ , for example, from expanded polystyrene foam, forming a hollow body of the product. For the body of the device, only non-combustible materials are used to avoid the appearance of new fires after the device is triggered in the event of expansion of the housing elements that may continue to burn after placing the device in the fire or arise from the burning of fire conductors.

FIG. 1, the cavity of the housing 1 provides for the accommodation of the standard amount of the extinguishing agent 2 and the initiating element 3 for opening the housing 1 and uniform spraying of the extinguishing agent 2.

The joints of the body 1, which consists of the upper bowl 7 and the lower bowl 8, are sealed, excluding the possibility of loss of mass of the extinguishing agent 2 and moisture ingress. Hull 1 consists of lightweight materials that, when activated, will not damage property or people.

The filling hole 5 is made on the edge, or distance, as far as possible from the closing edges of the body. Placing the filling hole on a plane that does not have seams or joints allows you to obtain a greater body tightness. After filling in the fire extinguishing powder, the hole is closed with a stopper 6 made of the same material as the body, and is additionally sealed with an adhesive / sealant that retains elasticity after drying / polymerization.

The initiating element 3 is located inside the housing 1, groups of fire-conducting cords 4 are brought to it, which are led out and fixed evenly on the outer surface of the housing 1 (the holes are sealed).

The body 1 is filled with a fire extinguishing agent 2 through the filling hole 5 and is sealed. After sealing and reaching the required amount of extinguishing agent 2, the hole is closed with a lid and sealed, and a heat-shrinkable polyvinyl chloride film is applied to the body 1 to protect it from damage and environmental influences.

The device functions as follows:

The device is a single-use fire-fighting agent designed to extinguish fires of the following classes:

- fires of solid combustible substances and materials (A);

- fires of flammable liquids or melting solids and materials (B);

- gas fires (C);

- fires of combustible substances and materials of electrical installations under voltage

(E).

The condition for the operation of the device is the direct effect of fire on the fuse 4, evenly located over the entire area of the body 1.

The principle of operation of the device: upon contact with fire, the fuse 4 ignites and activates the initiating element 3. This leads to the opening of the housing 1 of the device. As a result of the destruction of the housing 1, the extinguishing agent 2 is sprayed in the fire.

The device is powered in two ways.

In the first method of use, a fire extinguisher is thrown by a person into the fire and the device is triggered when the fuse 4 comes into contact with fire. The cord 4 ignites and the fire reaches the initiating element 3 at a standard speed, which creates an impulse overpressure inside the housing 1, followed by the opening of the housing 1, followed by spraying the extinguishing agent 2 into the volume of the fire. With this method, the device is made in the form of a cube, the edges of the body are rounded, due to the fact that when using the device, the convenience of “gripping” it with one hand for its movement and use increases.

In the second method of use, the device is stationary in the place of possible fire and is independently triggered when the fire touches the cord 4. Further, the principle of operation and the sequence of stages are identical to the first variant of use.

During manufacture, the external shape of the body 1 can change and it can be in the form of, for example, a ball (sphere), or a cylinder with a beveled edge, the edges of which are rounded, or a cube, the edges of which are rounded, or a parallelepiped.

The initiating element 3 is located inside the housing 1 and ensures safe and effective opening of the housing 1 and uniform dispersion of the extinguishing agent 2 over the volume of the fire.

The proposed device is reliable in use, safe and effective in extinguishing a fire in the early stages of its development. With this implementation of the device as a whole, it turned out to increase the reliability and efficiency of extinguishing fires. At the same time, the powder fire extinguishing device is simple and convenient to use, it can be delivered to the fire with one hand, while not equipping the device with additional elements that complicate and make the structure heavier.

In addition, such an implementation of the device allows it to be used in places where welding works are carried out in the conditions of the far north (snow-warm-snow -...), use on ships and yachts, motor compartments of boats, all-terrain vehicles, that is, such an implementation of the device allows it store in harsh climatic conditions and, if necessary, quickly activate.

Claims (2)

1. A powder fire extinguishing device, characterized in that the body is made of non-combustible expanded polystyrene foam with a density of at least 30-35 kg / m ^{3 and is} made in the form of a cube and consists of an upper bowl and a lower bowl, while the edges are rounded at the corners, inside the body a fire extinguishing agent and an initiating element made in the form of a firecracker, equipped with a group of fire-conducting, moisture-resistant stops, while in order to reduce the response time of the device in places of possible contact of the stop with fire, the stops located along the edge of the stop device are freed from the shell, the ends of the stop are evenly distributed and fixed on the outer surface the body of the device under a shrink PVC film, insulating the body in three layers to protect it from damage and environmental influences, while the inner edges of the second and third layers of shrink PVC film are sealed with waterproof glue. 2. A powder fire extinguishing device according to claim 1, characterized in that the filling hole is made on the upper bowl of the body, without touching its edges.

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