FR3072882A1 - LAUNCH OF FIRE AUTO CARTEE (BY THE EJECTION NOZZLES OF WATER) - Google Patents

Abstract

Self-extinguishing fire lance (through the vertical water ejection nozzles), whose movement back and forth on the sides, is remotely controlled by a joystick controlled by a fireman (right hand). The height of the lance is displaced by the variation of the flow and the pressure in the pipe, by means of a valve on the pipe, also controlled by the fireman (left hand). The lance being just above the firebox to extinguish, the water jet can be of the "spray jet" type, therefore more effective than a straight jet. The hose and the lance being cooled by the flow of water, the lance can carry audio and video links, as well as rescue equipment. The firefighter is away from home so safe. The water supply can be in a truck or helicopter, in which case, the intervention is independent of terrain relief.

Description

The displacement in height of the lance, is done by the variation of the flow and the pressure in the pipe, using a valve on the pipe, also controlled by the fireman (left hand).

The lance being just above the fireplace to be extinguished, the water jet can be of the “diffused jet” type, therefore more effective than a straight jet.

The hose and the lance being cooled by the flow of water, the lance can carry audio and video connections, as well as rescue equipment.

The firefighter is far from the home so safe.

The water reserve can be in a truck or a helicopter, in which case the intervention is independent of the terrain.

The present invention relates to a device for carrying a jet of extinguishing fluid above a fire hearth.

Fire hoses spray a fluid (usually water) from the ground. The firefighter must therefore be near the fire to extinguish it. On the other hand, the water is projected according to an approximate ballistic principle and strongly dependent on the wind.

The scattered jet performs better than the straight jet. But the scattered jet has a weak range.

Overhead fires require a fire department ladder which requires time to set up.

The device according to the invention overcomes these drawbacks. According to a first characteristic, it indeed comprises a lower part (4) transmitting the fluid conveyed by the pipe (2) to which it is fixed, to an upper part (5) (6) (7) (8): - which moves relative to the lower part along 2 axes of freedom (axis AA and axis BB), which upper part distributes the fluid to at least two nozzles (7) directed downwards, - whose movements along these axes relative to the lower part, are controlled by a lever (1) located at a distance from the upper and lower parts.

The projection of the water being done vertically, the lance is maintained above the ground, at a height related only to the flow rate and the speed of ejection of the fluid. The water jet is thus closer to the source of the fire. This allows better targeting of the watered area.

The lance can turn either; - under the effect of a gust of frontal wind, - or under the effect of a sudden increase in pressure.

On the other hand, the water ejection nozzles (7) being steerable at a distance (from the front to the rear and from right to left) by a handle (1), the firefighters are far from the fire ( Fig. 1), therefore more secure.

The lance being close to the fire, it can be of the diffused jet type, therefore more effective than a straight jet type lance.

Depending on the diameter of the pipe (therefore its weight), the pressure at the lance, the height of the fire source above the ground and the nature of the intervention (rescue or not), we can do without the scale of firefighter, so put out the fire faster.

In the case of rescuing people, a hanging device makes it possible to provide victims with accessories (self-contained breathing apparatus (ARI), fire blanket) allowing them to evacuate themselves.

The self-propelled lance can allow the evacuation of victims "at height" since it provides a cushioned fall device, since the closer the lance is to the ground, the lower the weight of the hanging pipe.

Since the flow rate of the extinguishing fluid guarantees constant cooling of the lance and the hose, electronic devices can be installed on the lance.

To communicate with the victims, an audio link between the lance and the firefighters can be installed under the lance.

For the recognition of places or victims, cameras (thermal or standard) can be installed under the lance (under the hat), since the visibility conditions are improved by eliminating the fumes under the effect of the scattered jets.

We can also suppose the use of the pull of the lance to pull on the hose (2) to unwind, thus facilitating the efforts of the firefighters and their speed of action.

The movements of the lance to move it from right to left (along the AA axis) and back and forth (along the BB axis), are controlled by a handle (1) located at a distance from the lance, within reach hand of the firefighter.

The control of the movements of the lance along the axes A-A and B-B, from the joystick, can be carried out by “Bowden” cable (bicycle cable) or electric motor or hydraulic cylinder.

The height of the lance, relative to the ground, will be controlled by varying the flow rate of the extinguishing fluid, by a valve on the hose, within easy reach of the firefighter.

The hose can be connected to a fire truck or a helicopter, located outside the area affected by the fire, therefore at normal temperatures and without a rising column of hot air.

According to particular embodiments:

- the lower part (4) contains a part (3) which allows the transmission of the fluid and allows at least one axis of freedom to the pipe (2) (CC axis) parallel to the BB axis allowing the application of the weight of the pipe at the lower part (4), according to a vertical force.

- The upper part is equipped in its upper part, with a cap (8) of rounded shape which protects the device and prevents it from clinging to the environment.

- the device includes equipment (hook, ring, handle, step) for transporting emergency equipment or people.

- The device includes electronic equipment allowing the image to be transferred and the sound to be exchanged between the environment of the device and the fireman actuating the joystick (1).

The accompanying drawings illustrate the invention:

FIG. 1 represents the principle of the invention under forest fire conditions.

Figure 2 shows the lance with its hat (8) seen in transparency.

With reference to these drawings, the device, represented in FIG. 1, comprises in the embodiment according to FIG. 2, a part (3) ensuring the junction of the fluid between the pipe (2) and the part (4), with a axis of freedom (axis CC).

The part (4) supporting the axis C-C, comprises a junction ensuring the passage of the fluid to the part (5) and an axis of freedom (axis B-B) with the latter.

The part (5) supporting the axis B-B, comprises a junction ensuring the passage of the fluid to the part (6) and an axis of freedom (axis A-A) with the latter.

The part (6) supporting the axis A-A, comprises 2 diversions of the fluid towards the 2 nozzles (7) directed towards the ground.

The part (6) also includes a cap (8) surrounding the nozzles (7) and a hook or ring (not shown).

-3The termination of the nozzles is close to the plane consisting of the axes A-A and B-B so as to limit the forces of the rotary control along these same axes.

The device according to the invention is particularly intended for extinguishing fires in a forest or urban environment.

Claims (5)

Claims: 1. Device for carrying a jet of extinguishing fluid over a fire hearth, characterized in that it comprises a bottom part (4) transmitting the fluid conveyed by the pipe (2) to which it is fixed, to a upper part (5) (6) (7) (8): - which moves relative to the lower part along 2 axes of freedom (axis AA and axis BB), which upper part distributes the fluid to at least two nozzles ( 7) directed downwards, - whose movements along these axes with respect to the lower part, are controlled by a lever (1) located at a distance from the upper and lower parts. 2. Device according to claim 1, characterized in that the lower part (4) contains a part (3) which allows the transmission of the fluid and allows at least one axis of freedom to the pipe (2) (axis CC) parallel to the axis BB allowing the weight of the pipe to be applied to the lower part (4), according to a vertical force. 3. Device according to claim 1 or 2, characterized in that the upper part is equipped in its upper part, with a cap (8) of rounded shape which protects the device and prevents it from clinging to the environment. 4. Device according to any one of the preceding claims, characterized in that it comprises equipment (hook, ring, handle, running board) for transporting rescue equipment or people. 5. Device according to any one of the preceding claims, characterized in that it comprises electronic equipment making it possible to transfer the image and to exchange the sound between the environment of the device and the fireman actuating the joystick (1).