RU197664U1 - Pulse Powder Fire Extinguisher - Google Patents

Abstract

The utility model relates to the field of fire and rescue equipment, in particular to the class of devices for spraying fire extinguishers and light heat-protective compositions (OZS). A powder spray extinguisher consists of a cylindrical housing, contains a spray charge, an initiator and a fire extinguishing composition in series, characterized in that the barrel body has thin walls, made of polyamide with a fiberglass filler, which reduces the weight of the body up to 3 times depending on the type of polyamide filler and the thickness of the body wall; on the body-trunk there is a guard to protect the palm of the hand from injuries during the recoil force from the shot-spray, and also the surface of the body-barrel has rings for more firm grip by hand; a case with a tension igniter is installed in the barrel body, on which the spray charge from the powder is quickly burnt, the charge is closed with a wad, behind which a cylindrical recess passes into a concave hemispherical chamber, closed with a wad; the camera contributes to the formation of a dense front of the spray wave, which reduces the pressure inside the barrel, increasing its strength, increases the propelling ability of the wave, making acceleration of the extinguishing powder more effective; there is a “skirt” on the charge casing, which protects the extinguishing powder from moisture, and also prevents the release of powder gases between the barrel casing and the charge casing; the initiator is equipped with a tension cord, at the end of which a ring is fixed, for which the cord twitches when fired; from the side of the tension cord, the body-barrel has a thread onto which a safety threaded cover is screwed; between the inner surface of the threaded cover and the edge of the threaded element of the body-barrel there is a sealing gasket made of elastic material that protects the internal elements of the fire extinguisher from moisture and dust. Thus, for the first time it is possible to provide permanently wearable, compact extinguishing devices, protecting many people: drivers, personnel fire and explosion hazardous industries, warehouses, military facilities, offices; policemen, firefighters, residents, especially high-rise buildings, etc. - compact, simple, light, reliable fire extinguishers, constantly at hand. 1 ill.

Description

The utility model relates to fire fighting equipment, and in particular to the class of devices for spraying fire extinguishing and light heat-protective compounds (OZS) for extinguishing fires, arson in the first seconds, tens of seconds after they are detected, small foci of fire, and also for self-rescue: extinguishing burning clothes, providing an escape route through the burning door, window, stairwell, section of the corridor.

The number and scale of fires is growing annually: in the industry, from the growth of production volumes, electric networks, apparatuses, pressures and temperatures in them, degree of automation; in cities from the increase in the saturation of buildings with electrical appliances, automation, combustible finishes, furniture, fabrics, cars; in forests, savannah, steppes, fields, villages due to heat, arson. Fire extinguishers can extinguish more than 90% of local foci if they are simple, reliable, compact, efficient from a safe distance of at least 2-3 m, cheap, work for at least 3 years without reloading the extinguishing agent (OS) and the source of compressed gas, providing the required their saturation of offices, houses, transport, shops, warehouses.

Powder fire extinguisher OP-5 consists of two heavy metal cylinders: the first with a capacity of 5 l with OS at a pressure of 10-30 atm. weighs at least 8 kg, the second with a capacity of 0.5 l with compressed to 200 atm. air and a short hose with a starting lock. The total weight of the fire extinguisher is 9.5 kg. Such a fire extinguisher is bulky, heavy, uncomfortable to carry, inertial - more than a minute from picking them up before extinguishing. Extinguishing range of 0.5-1 m requires work in a danger zone from a flame, complex construction and high price, and the cost of annual reloading is up to 40% of the price, three prices are paid for 5 years. In offices and homes in England up to 50% of such fire extinguishers do not work, in Ukraine up to 80% after the first year of storage. A narrow extinguisher fire extinguisher with a small front area is difficult to extinguish a fire for a long time, working in a danger zone from a flame. This requires skills, regular training, firefighters rarely work as a fire extinguisher. The impact of a fire extinguisher jet is dangerous at a distance of up to 1.5 m - it injures the organs of vision, respiration, and smell.

Known pulse fire extinguisher "Shar" produced in Taiwan and Russia. Weight 2 kg, wholesale price 1400 rubles. It consists of a spherical body filled with fire extinguishing powder (OP), in the center of mass of which a spray powder charge with a fire-resistant cord exiting the fire extinguisher body is fixed. A fire extinguisher is thrown into the fire, the flame ignites the outer end of the cord, and after a few seconds the OS is sprayed in a volume of radius no more than 1 m. One such spray can extinguish only a local fire in a limited volume, such as a cabinet or a transformer booth, but will not extinguish a burning liquid or tree in open space or in a small room.

Disadvantages. Extinguishing even a small fire requires the massive use of such devices. After prolonged storage for more than 2-4 months, the powder coalesces, the spraying unevenness increases, as a result, the quenching volume decreases, but the scattering radius of packed powder lumps that can cause injuries in open areas of the body, face, especially dangerous to the face, eyes increases to 5 m and higher .

Known pulse fire extinguisher Zakhmatova V.D. “Impulse fire-extinguishing rucock pristry” UA No. 13852A, 05.26.1993., 04.25.1997. Bull. No. 2. A fire extinguisher weighing 1.2 kg consists of a massive handle with a shock-starting device, a barrel into which containers containing a fire extinguishing composition and a blank, spray cartridge from hunting weapons are charged.

Disadvantages. The cartridge limits the use of a fire extinguisher only to firefighters, police and military. Low polyethylene housing

The pressure is massive, thick-walled and heavy, which makes it difficult for a firefighter, police officer and civilian to carry not only one, but 2-3 mini-extinguishers, which, according to their number, increases the likelihood of escape from flames and evacuation through a section with a temporarily shot down flame.

The purpose of this utility model is to eliminate the aforementioned drawbacks, analogues and prototype, preserving their positive qualities in a new improved design.

The technical result from the use of a utility model is to reduce weight and increase the strength of the fire extinguisher.

This goal is achieved in that the powder spray fire extinguisher pulse consisting of a cylindrical barrel body, contains initiator, spray charge, wad, fire extinguishing composition and hermetic wad or elastic membrane, characterized in that the barrel body has thin walls, made of polyamide with fiberglass filler, which reduces the weight of the body up to 3 times depending on the type of filler polyamide and the wall thickness of the body; on the case-trunk there is a guard for protection against palm injuries during recoil force from shot-spraying, also the surface of the case-barrel has rings for more firm grip by hand; a case with a tension igniter is installed in the barrel body, on which the spray charge from the powder is quickly burnt, the charge is closed with a wad, behind which a cylindrical recess passes into a concave hemispherical chamber, closed with a wad; the camera contributes to the formation of a dense front of the spray wave, which reduces the pressure inside the barrel, increasing its strength, increases the propelling ability of the wave, making acceleration of the extinguishing powder more effective; there is a “skirt” on the charge casing, which protects the extinguishing powder from moisture, and also prevents the release of powder gases between the barrel casing and the charge casing; the initiator is equipped with a tension cord, at the end of which a ring is fixed, for which the cord twitches when fired; from the side of the tension cord, the body-barrel has a thread onto which a safety threaded cover is screwed; Between the inner surface of the threaded cover and the edge of the threaded element of the barrel body there is a sealing gasket made of elastic material, which protects the internal elements of the fire extinguisher from moisture and dust.

The design of a pulse powder fire extinguisher is shown in FIG. 1, where: 1 - a cover made of a polymeric material, for example, polyamide; 2 - gasket made of soft material, for example, polyethylene; 3 - wad made of solid material, such as cardboard; 4 - a barrel made of a polymeric material, for example, polyamide; 5 - fire extinguishing powder; 6 - guard of the case; 7-rings of the body; 8 - wad made of solid material, such as cardboard; 9 - "skirt" on the body of the charge; 10 - a charge housing made of a polymeric material, for example, polyamide; 11 - wad made of felt, cardboard or polymer material; 12 - spray charge; 13 - standard initiator; 14 - tension cord, made of durable material, for example, from a nylon rope; 15 - a ring made of durable material, such as metal; 16 - sealing gasket made of soft material, for example, silicone, expanded polystyrene; 17 - threaded cover made of a polymeric material;

A powder spray fire extinguisher operates as follows: the barrel body 4 is taken in hand, the cap 1 is removed from the muzzle of the barrel, then the body is firmly taken by the breech with rings 7 with one hand resting on the guard 6, the threaded cap 17 is carefully folded with the other hand and then they aim the muzzle of the fire extinguisher on the fire and the ring 15 with the cord 14 jerks sharply, after the initiator standard 13 creates a force of fire that ignites the spray charge 12, which when burned quickly creates a spray wave of powder gases, which forms due to a hemispherical recess between wads 8 and 11, a directed vortex of powder gases is created, which moves the wad 11. The double wad 8-11 accelerates the mass of the extinguishing powder; behind the cut of the barrel, the mass, mixed with air, forms a gas-powder vortex with a satellite stream of powder gases compressing it from behind. Aerodynamic drag at the front and powder gases at the back compresses the front of the vortex to a disk, extinguishing one sq. M in 1-2 seconds. The meter is effective without reignition.

A pulsed powder fire extinguisher can serve as an individual protection device for a firefighter, police officer, lifeguard, room, office, home, car engine. The fire extinguisher sales market can be measured up to several million units annually. Pulse spray fire extinguisher provides a number of advantages over existing technology:

1) increased strength of the case with reduced weight,

2) light weight up to 0.55 kg with fire extinguishing efficiency of not less than 0.5 m of the burning surface of wood or gasoline;

3) safety with direct impact on a person and safety of a person working with a fire extinguisher.

Claims (1)

A pulsed powder spray fire extinguisher, consisting of a cylindrical body, contains a spray charge in series, an initiator and a fire extinguishing composition, characterized in that the barrel body has thin walls, is made of polyamide with fiberglass filler, which reduces the weight of the body up to 3 times depending on the type of filler polyamide and the wall thickness of the housing; on the case-trunk there is a guard to protect the palm of the hand from injuries during the recoil force from the shot-spray, and also the surface of the case-barrel has rings for more firm grip by hand; a case with a tension igniter is installed in the barrel body, on which the spray charge from the powder is quickly burnt, the charge is closed with a wad, behind which a cylindrical recess passes into a concave hemispherical chamber, closed with a wad; the camera contributes to the formation of a dense front of the spray wave, which reduces the pressure inside the barrel, increasing its strength, increases the propelling ability of the wave, making acceleration of the extinguishing powder more effective; there is a “skirt” on the charge casing, which protects the extinguishing powder from moisture, and also prevents the release of powder gases between the barrel casing and the charge casing; the initiator is equipped with a tension cord, at the end of which a ring is fixed, for which the cord twitches when fired; from the side of the tension cord, the body-barrel has a thread onto which a safety threaded cover is screwed; Between the inner surface of the threaded cover and the edge of the threaded element of the barrel body there is a sealing gasket made of elastic material, which protects the internal elements of the fire extinguisher from moisture and dust.

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