RU94863U1 - THROWING FIRE EXTINGUISHER - Google Patents

Abstract

 A missile fire extinguisher comprising a cylindrical body filled with a fire extinguishing agent, in the lid of which a moderator made of combustible material is placed, connected to a solid fuel igniter, characterized in that the body is made of metal and has randomly distributed through holes with plugs, the inside the lid is made in the form of a solid fuel gas generator.

Description

The utility model relates to fire fighting equipment, namely to fire extinguishers being thrown (thrown) both by the use of starting devices (installations) and by a manual method. Various designs of fire extinguishers are known: No. 1266549, US patent No. 3833064, patents of the Russian Federation No. 2055613, 2099113, 2111781 (refillable fire extinguisher), No. 2022089, 2022584, 2082471, 2108825 (missile fire extinguisher) according to class. A62CO 17/00, A62 19/00, representing various versions of containers (metal, plastic, paper) filled with fire extinguishing agents, a burst charge with an initiating device located inside, or a gas generator driven by an initiating device.

Moreover, in the considered variants, a breaking charge (gas generator) is made both from a liquid substance and from solid fuel.

Reviewed by A.S. and patents have both a number of advantages and disadvantages. As a prototype, patent No. 2108825 (class A62CO 19/00, 1996) was selected, containing a cylindrical plastic or paper case closed with lids, an explosive charge in the form of a cylindrical channel bomb made of aerosol extinguisher in the center of the fire extinguisher, and an igniter in the channel of the bomb.

The disadvantage of the considered analogues and prototype is that, with all the options for filling and casting (throwing), the effectiveness of fire extinguishers is determined mainly by the accuracy of casting into the burning center. This is especially important for closed rooms with uncertain coordinates of the fire source, when the position of the fire extinguisher or its fragments after the destruction of the fire extinguisher does not completely capture the fire and allows for "dead" zones.

The proposed technical solution based on the prototype extends the capabilities and effectiveness of the use of a fire extinguisher.

The essence of the proposed version of the fire extinguisher is as follows:

In the case of the fire extinguisher in a certain order, or according to a random law, holes are made (communicated with its internal volume). When a fire extinguisher is activated, the extinguisher jets flowing through the openings in the body cause the fire extinguisher to move erratically throughout the room, including the “dead” zones, while spraying the extinguisher.

The dimensions of a fire extinguisher are determined depending on the tasks and conditions of the fire extinguishing - they can be abandoned both from the starting devices (installations) and manually.

The number of holes, their size is determined depending on the size of the fire extinguisher and is accordingly calculated based on the planned operating time of the fire extinguisher and the task of using it in a fire hazardous room. During the storage of the fire extinguisher, the openings for discharging the extinguishing agent to protect against moisture ingress are plugged with pressure-knocked plugs.

A gas generator cover is screwed into the body of the fire extinguisher, in which a solid fuel charge and an igniter formed in it are placed. In preparation for operation, a firing device with a moderator is screwed into the lid of the gas generator, for example, in the form of a Bikford cord, which is activated when a fire extinguisher is used.

The gas generator is made of a metal casing and a glass made of plastic or glued paper glued into it, which collapses with increasing pressure as a result of the burning of a charge of aerosol-forming solid fuel of the gas generator. Rubber seals limit the charge from movement.

Figure 1 presents a diagram of a fire extinguisher in longitudinal section.

Structurally, a missile extinguisher consists of a metal body 1 with asymmetrically located holes 2 for ejecting the extinguishing agent 3, plugs 4, the body of the gas generator 5, the glass of the gas generator 6, the charge of solid fuel 7, seals 8, the ignitor 9, the fuse of the gas generator 10, the moderator 11.

Scheme of work of a missile fire extinguisher: after ignition (ignited from an external flame source) of the moderator 11, a missile fire extinguisher is thrown into the fire. After combustion of the moderator, the igniter 9, which consists of a thin-walled polyethylene shell filled with gunpowder, initiates the combustion of the charge of solid fuel 7. Upon ignition of the solid fuel, a large amount of gas is generated, as a result, the pressure inside the housing increases significantly, the plastic cup of the gas generator 6 is destroyed, and the combustion products with a high pressure, the extinguishing agent 3 is displaced through the guide holes 2 asymmetrically located on the extinguisher body, knocking out at m 4. Elapsed plugs with great speed, quenching substance creates a reaction force that causes the fire extinguisher to move erratically in the hearth fire. This chaotic movement of the fire extinguisher allows you to cover a large area of extinguishing, thereby increasing the likelihood of the extinguishing agent getting into the "dead zones".

Claims (1)

A missile fire extinguisher comprising a cylindrical body filled with a fire extinguishing agent, in the lid of which a moderator made of combustible material is placed, connected to a solid fuel igniter, characterized in that the body is made of metal and has randomly distributed through holes with plugs, the inside the lid is made in the form of a solid fuel gas generator.