FR2843889A1 - EXERCISE FACILITY FOR TRAINING PEOPLE EXTINGUISHING A FIRE - Google Patents

Abstract

This installation comprises a fireplace consisting of a gas burner which is immersed in the water contained in a tank, means for supplying the burner with a mixture of combustible gas, such as propane, and air, and an electrode ( 62) capable of igniting the gas at the start of the exercise; The installation is provided with an ignition system comprising a box (7) positioned near said tank, the interior space of which is thermally protected, and which is provided with a heat-resistant tube (71), for example of stainless steel, the free end of which opens out a short distance above the surface of the water of the tank, while inside this housing are arranged, on the one hand, a device (70) for blowing into this tube (71) a mixture of combustible gas, such as propane and air, and on the other hand, a spark plug (6) provided with said electrode (62), the latter extending axially inside the tube (71), over only part of its length. firefighting personnel.

Description

The present invention relates to an exercise installation for

  training people to put out a fire.

  Devices of this kind are known, which include means capable of generating a real fire, by igniting a fuel - for example a gas produced by a burner -; during training the trainee should try to put out the fire as quickly and efficiently as possible, using

an appropriate fire extinguisher.

  The operation is of course supervised and controlled by supervisory and teaching staff.

  Documents US-4 303 396 and EP-0 146 465, for example, relate to respectively fixed and mobile drive installations (mounted

inside a truck).

  More specifically, the installation which is the subject of the invention is intended for training people in extinguishing a fire which simulates a hydrocarbon fire, this installation comprising: - a hearth constituted by a gas burner which is immersed in water contained in a tank; - Means for bringing to the burner a mixture of combustible gas, such as propane, and air;

  - an electrode capable of igniting the gas at the start of the exercise.

  It is a double electrode of known type, operating at high voltage, the discharge spark between the two electrodes causing the ignition.

  of the mixture of combustible gas and air leaving the burner surface.

  The state of the art in this area can be illustrated by the document 25 FR - 2 814 845.

  To be able to cause the ignition of the mixture, it is logical to arrange such an installation in such a way that the active part of the electrode, where the spark occurs, is positioned a short distance from a burner area where

  exits the fuel gas mixture. This poses several difficulties.

  First, once the ignition has been carried out, the electrode is exposed to flames, which poses risks of fouling and

  deterioration resulting from the high temperature.

  Secondly, the electrode is also exposed to the extinguishing agent used during the exercise, for example water or powder.

  This exposure can compromise the proper functioning of the electrode, for the ignition of a new fire when a trainee has completed his exercise.

  This is particularly the case if the electrode is wet or if powder is deposited in the interval separating the anode from the cathode.

  However, it is important, for a good progress of the exercises, that one can quickly and automatically light a new fire, by means of an ad-hoc control circuit, as soon as an exercise is finished.

  These drawbacks are avoided in the installation which is the subject of the aforementioned document FR - 2 814 845, thanks to the fact that the electrode is mobile and is likely to be removed from the burner before the start of the exercise, and maintained

retracted during exercise.

  Its movement is controlled by a pneumatic cylinder.

  It is thus protected from flames and the extinguishing agent used during the exercise. '

  As soon as the exercise is finished, it is moved back to its active position, suitable for a new ignition.

  This known installation, in general, gives satisfaction.

  However, it requires the implementation of mobile members, more expensive and less robust than equivalent fixed members, requiring a

sustained maintenance.

  In addition, the pneumatic cylinder has a relatively large length, and its presence on one side of the tank can pose difficulties in certain configurations, in particular when it is desired to attach the tank to a

  partition of the exercise room or place the tank in a corner of this room.

  The invention aims to solve these difficulties. This objective is achieved, in accordance with the invention, by virtue of the fact that the installation is provided with an ignition system comprising a housing positioned near the tank, the interior space of which is thermally protected, and which is fitted with a heat-resistant tube, for example made of stainless steel, the free end of which opens a short distance above the surface of the water contained in the tank, while inside this housing are arranged, on the one hand, a device for blowing into this tube a mixture of combustible gas, such as propane and air, and on the other hand, a candle provided with said electrode, the latter

  extending axially inside the tube, over only part of its length.

This system is therefore fixed.

  The size of the housing is small compared to that of the tank.

  This thermally insulated housing and the tube protect all

  active components of the ignition system, including the electrode.

  The spark necessary for ignition is not created in the vicinity of the burner, but inside the tube, in order to ignite the combustible mixture which runs through it. So these are flames that leave the tube, like a

  torch, pure cause the burner to ignite.

  As soon as the tank has been ignited, the supply of fuel and possibly air to the system is obviously stopped.

  The tube remains in place above the tank, its presence not interfering with the exercise, and the electrode being sheltered inside the tube.

  The latter then plays the role of a protective sheath, preventing the electrode from being exposed to flames, which would pose risks of fouling

  and deterioration resulting from the high temperature.

  The electrode is also protected from the extinguishing agent used during the exercise.

  Furthermore, according to a certain number of advantageous, but not limiting, characteristics of the invention: the device serving to inject into the tube the mixture of combustible gas and air is a hollow body having inlet openings for the 25 combustible and air gas; - The installation includes a flame presence control means inside the tube, such as an ultraviolet radiation detector, this control means being located inside said housing, at the entrance of this tube; - The tube assumes the shape of a cane, its free end portion 30 being bent and turned downward, to open just above the surface of the water contained in the tank; the burner is supplied by the mixture of combustible gas and air via a "swan neck" pipe; the installation includes means for controlling the extinction of the flames present in the tank, such as ultraviolet radiation probes; the installation comprises means for controlling the extinction of the flames present in the tank, such as at least one temperature sensor, for example consisting of a thermocouple type probe placed in the immediate vicinity of the hearth and relayed by a sensor "intelligent" capable of detecting and recording temperature readings in real time in the vicinity of the fireplace; the installation comprises a control circuit capable of automatically cutting off the supply of fuel gas to the burner if the extinction of the flames in the tank has not been detected beyond a determined period of time from ignition; - the combustible gas is supplied from a pressurized tank and the air by means of a booster, the mixture being made by a "T" connection, in which the air supply duct penetrates, perpendicularly , inside the fuel gas supply pipe; the air is supplied to said device by means of a supply duct which is connected to the air inlet mouth and is supplied with air by said booster; - The combustible gas is brought to said device by means of a supply conduit which is connected to the inlet mouth of the combustible gas, and is supplied with combustible gas from the pressure tank; - The housing is equipped with a device for adjusting the flow of combustible gas admitted into the device used to inject the mixture of combustible gas and air into the tube; - The air is brought to this device by means of at least one oue̋ of air intake with adjustable flow rate mounted in the wall of the housing; - This housing is internally lined with a layer of thermally insulating material;

  - the burner is made of intertwined stainless steel fibers.

  Other characteristics and advantages of the invention will appear from the description which will now be made of it, with reference to the accompanying drawings, which represent - without limitation - a possible embodiment.

  On these drawings; - Figure 1 is a general schematic view of the entire installation; FIG. 2 is a general schematic view, in axial section, and on a larger scale, of the ignition system with which the installation is provided; - Figure 3 is a detail of the "T" connection of the gas and air supply conduits; - Figure 4 is a schematic view of the hearth, intended to illustrate the operation of the installation; - Figure 5 is a diagram of the command and control circuit

of the installation.

  In FIG. 1, the reference numeral 1 designates a cylinder of combustible gas, in this case propane; As an indication, the pressure of the gas in the

  bottle is between 7 and 17 bars approximately.

  Reference 2 designates a known type of booster, capable of supplying

  an air flow whose pressure is slightly higher than atmospheric pressure.

  Reference 3 designates a connection which - as will be seen later ensures the connection of the propane and air ducts, so as to supply

  in mixture of combustible gas an exercise stove.

  The latter consists of a burner 5 which is immersed in water E

  contained in a tank, or tank, 4 arranged horizontally on a support, for example placed on the ground. The submerged burner 5 is a porous horizontal plate, for example composed of knitted stainless steel fibers, the upper face of which is of the "multi-flame" type, allowing spreading of the combustion over the entire upper face of the burner.

  The shape of the container 4 can be any, for example circular, square or rectangular (seen from above). It is relatively shallow by

  relative to its dimensions in a horizontal plane.

  The reference 6 designates a candle with a double electrode situated on one side of the tank 4, inside a box 7.

  This housing has for example a rectangular or rectangular cubic shape.

  As an indication, the dimension of each of its sides is of the order of 300mm.

  Its wall is heat resistant, for example made of stainless steel.

  Its dimensions are relatively reduced compared to those of the tank 4, its scale having been proportionally enlarged in FIG. 1 so

  simply to improve the clarity of the drawing.

  Referring to FIG. 2, it can be seen that the interior space of the housing 7 is thermally protected by a lining 700 of material of known type having good thermal insulation qualities, for example a layer of

base of mineral fibers.

  The housing 7 is provided with a heat-resistant tube 71, for example made of stainless steel; it extends horizontally, passes over the wall of the tank 4, and its free end portion 710, slightly curved downwards, opens out a short distance above the surface of the water E contained in tank 4.

  This portion 710 is oriented approximately towards the central region of the submerged burner 5.

  As an indication, the tube 71 has a length of between approximately 300 and 600 mm, has a diameter of the order of 50 to 60 mm, and it extends above the surface of the water at a distance therefrom. ci which is between 50 and 200 mm approximately. The tube 71 is fixed in leaktight manner, by suitable means, not shown, inside an opening of corresponding section made

  in one of the walls of the housing 7.

  Inside the latter is arranged a device 70 capable of blowing into the tube 71 a mixture of combustible gas, such as propane and air,

  as well as an electric candle fitted with the electrode 6.

  This device 70 is a hollow body having a main part 72 of cylindrical tubular shape, which is extended axially by a pipe 78 of smaller diameter, substantially smaller than that of the tube 71, inside the latter. The free end portion 780 of the pipe 78 is widened. 25 The axis common to parts 72 and 78 is horizontal, parallel by

therefore to the axis of the tube 71.

  The hose 78 extends inside the tube 71 only over a part of its length, for example over a third of its length.

  In the end portion of the part 72 which is located inside the housing 7, on the side opposite the pipe 78, a spark plug 6 is mounted.

  This is provided with a rigid, filiform and rectilinear double electrode 62, which extends axially inside the tubular elements 72 and 78. Its free end

  is positioned in the open part 780 of the pipe 78.

  Appropriate fixing and retaining means, not shown, ensure, on the one hand, the maintenance of the device 70 inside the housing 7 in the desired position and, on the other hand, the correct centering of the electrode 62 in the elements

tubular 72 and 78.

  References 60 and 61 respectively designate a high-voltage current generator and an electrical conductor supplying the spark plug 6, via a contactor 610 such as a switch controlled by an electromagnet.

  The device 70 has inlet mouths for the combustible gas and for the air.

  These are tubes 730, respectively 720, connected to the main part 72.

  The air manifold 720 is located upstream of the combustible gas manifold, if the direction of blowing of the mixture into the tube 71 is considered, via the hose 78. The axis of this manifold is perpendicular to the axis of the main part 72.

  The axis of the fuel gas pipe 730 forms an acute angle a 15 with the axis of the main part 72, with an angle at the top directed downstream. Upstream, the pipe 730 is extended by means of a conduit 73 to a connection end piece 170 carried by a wall of the housing 7. On this duct 73 is mounted an appropriate system for adjusting the gas flow rate, shown in the figure by a chamber 74 containing a movable adjustment flap, for example controlled by cam.

  The conduit 73 is intended to be connected, via a connector 170, to a conduit 17 for supplying combustible gas.

  As for the conduit 76, it is intended either to be connected to an air supply duct 22 -as shown in FIGS. 1 and 2-, or to be left free so that it then communicates with the air present in the enclosure of the housing 7.

  Upstream, the tubing 720 is extended by means of a short conduit 76, the inlet of which is located inside the housing 70.

  References 8a and 8b (Figures 1 and 4) designate ultraviolet radiation probes, each intended to detect an area of the focal point.

  More than two probes can of course be used, depending

  dimensions of the tray 4, and the difficulty that one wishes to give to the exercise.

  These are known type UV probes, using tubes insensitive to the radiation of sunlight and electric lighting, but susceptible

  detect ultraviolet rays from the flame.

  In the event of disappearance of this radiation, resulting from a local extinction of the flame, in the detected area, the probe emits an electrical signal

  which is received by a circuit 80.

  Inside the housing 7 is mounted a similar ultraviolet radiation probe 5c 8c, intended, for its part, to detect the presence of a flame inside the tube 71.

  The references 90 and 91 respectively designate a propane detector and a carbon dioxide detector (CO).

  Electrical signals corresponding to each of these detections 10 are sent to an appropriate processing circuit 9.

  The reference 93 designates a temperature sensor placed near the hearth which, as will be seen later, has the function of stopping the

  combustion when the temperature exceeds a determined threshold.

  The reference 92 designates a ventilator capable of causing ventilation of the room L containing the burner, and in which the exercise is practiced.

  The reference 8d designates a temperature sensor constituted by a thermocouple, capable of detecting a negative temperature gradient in the vicinity

immediate home.

  It is for example a thermocouple of the type marketed by the French company "PYRO-SYSTEMES" under the commercial reference "TC530Klnc-P", of length equal to 100 mm, of diameter equal to 3 mm, and whose

  maximum operating temperature is 1100 C.

  This sensor 8d is integrated in the upper face of the burner 5. In at least one of the walls of the housing are provided a pair 25 of openings 77, 77 ′ capable of being closed more or less completely by

  adjustment flaps 76, respectively 76 ′, or on the contrary left open.

  These are air intake vents in the housing. They allow the supply of air, with an adjustable flow rate, from the outside, to the inlet of the tube 76 as soon as the duct 22 has not been connected 30 to this tube 76.

  In FIG. 1, the lines for supplying propane, respectively at medium and low pressure, have been designated by the references 15 and 16.

  The direction of propane circulation is symbolized by the arrow P. The reference 11 designates a safety device, comprising a regulator, which lowers the pressure of the propane supplied by the cylinder 1, the pressure

  in line 15 being for example of the order of 1.5 bars.

  The references 10a and 10b located respectively upstream and downstream of the apparatus 11 designate manual cut-off valves.

  Reference 12 is also a safety device comprising a pressure reducer, the function of which is to further lower the pressure of propane to a relatively low pressure, for example between 30 and 300 millibars approximately, the pressure chosen depending on the type of fire used as well as the dimensions and the power of the burner 5. As an indication, this power is

between 50 and 150 KW.

  The references 10c and 10d are manual cut-off valves, 10 located respectively upstream and downstream of the apparatus 12.

  The reference 13 designates a "mini-gas" pressure switch, and the reference 14 a solenoid valve.

  As is well known, the pressure switch 13 causes the automatic closing of the solenoid valve 14 when the gas pressure is below a determined threshold 15, for example when a filter located upstream is clogged.

  Furthermore, as will be seen below, the solenoid valve 14 is controlled by the installation command and control circuit.

  The booster 2 supplies air in the duct 20 at a pressure very slightly higher than atmospheric pressure.

  The direction of air circulation in this duct 20 is symbolized by the arrow A. The reference 21i designates a valve, with manual (voluntary) or electric (automatic) control, allowing the exhaust of the air supplied by the booster. 2 outwards if necessary, for example when the solenoid valve 14 is closed (preventing the burner from being supplied with air only).

  As can be seen in FIG. 3, the end of the conduit 20 penetrates into the conduit 16 to form a branch in the shape of a "T", referenced 3, in which the mixing of the streams of propane gas P and of air A, the circulation of the mixture being symbolized by the arrows M in FIGS. 1 and 2.

  The air supply duct 22 of the device 70 is connected to the duct 20 upstream of the connection 3.

  Downstream of said connection, the mixture is brought, via a conduit 30 in the form of a swan neck to a connection conduit 31 connected to the burner 5.

  The swan neck shape of the portion 30, the upper portion of which extends above the water level, prevents backflow of the water E contained

  in tank 4 in the mixture supply pipe.

  The conduit 31 passes through the bottom of the tank 4 in a leaktight manner, thanks to the interposition of an appropriate seal.

  This phenomenon is represented in FIG. 4, in which the arrows i symbolize the plurality of air streams leaving the burner from the bottom up, causing the body of water (of low height) boiling above the bubbling burner.

  When this combustible mixture is ignited, a distribution of the flames f is observed over the entire surface of the tank, thus simulating a hydrocarbon fire.

  You can play with the color of the flames by modifying the relative percentages of propane and air.

  A proportion of 20% air and 80% propane makes it possible to obtain flames in red and yellow tones similar to those of a hydrocarbon fire.

  As an indication, the height of water E in the tank 4 is of the order of 15 to 20 cm, the thickness of the burner 5 is between 8 and 15 mm, and the height of water 20 above the burner is of the order of 4 to 5 cm.

  Still for information, if we are dealing with a circular burner, its diameter is for example of the order of 60 cm.

  Of course, other dimensions can be adopted depending on the exercise that one wishes to implement.

It is fitted with a solenoid valve 18.

  The pipe 17 for supplying propane to the ignition device 70 is connected to the pipe 16 at a point located between the pressure switch 13 and the solenoid valve 14.

  Before starting the exercise, the tank is lit by means of the device 70.

  The booster 2 is started, and all the propane supply valves are open, so that: - the gas mixture feeds the burner 5, via the conduit 31 (arrow M, FIG. 1); - the propane feeds the device 7, via the conduit 17 and the tubing 35 730 (arrow P ', FIG. 1);

  - The air feeds the device 7, via the conduit 22 and the tubing 720 (arrow A ', figurel).

  The mixture M comes out of the burner in the form of small air jets i directed from the bottom up, which ensure a certain boiling of the water E in the tank 4. The air and propane flows under pressure which arrive in the hollow body 70 mixes there and the mixture is blown into the pipe 78 with a flow

  relatively large given the small diameter thereof.

  In the larger diameter end portion 780 of this pipe 10 there is an expansion and a slowing down of the gas flow.

  The power of the spark plug is then controlled by electric current, by closing the contactor 610, which generates a spark at the tip of the electrode 62, which is precisely located in the portion 780, at the heart of the fuel mixture. This causes the mixture to ignite and the flame mixture spreads inside the tube 71, from which it leaves through the curved part 710 by

  which it is directed towards the surface of the water, above the burner 5.

  As it also emanates from the latter a flammable mixture, combustion is transmitted to the tank.

  A control and command circuit for this installation, referenced

  in Figure 5, such as a microprocessor, is provided.

  It is programmed to ensure the smooth running of the exercise, in optimal safety conditions.

  As soon as the sensor 8c has detected the presence of flames in the tubular rod 71, said circuit 80 controls the contactor 610 to cause the stop of

  the spark plug power supply 6.

  As soon as the sensors 8a, 8b have detected the presence of flames in the tank, it orders the valve 18 to close.

  The combustion then ceases within the tube 71, the ignition system 30 being deactivated.

  The tank extinction training exercise can begin.

  The presence of the tube 71 above the tank is in no way inconvenient for this exercise.

  In order to keep the water level in the tank constant (above the burner), and to compensate for any excess water (resulting from the supply of extinguishing agent) a "overflow" system , not shown, can advantageously be provided.

  Conversely, a make-up water supply system can also be added to compensate for losses due to evaporation.

  These two systems could also be grouped together in a water recirculation device with level control, possibly equipped

a filter.

  As shown in the diagram in FIG. 5, the circuit 80 receives information from: - the ultraviolet radiation probes 8a, 8b, 8c and the sensor 8d; - circuit 9 for detecting an abnormal level of propane or CO in enclosure L;

- the temperature probe 93.

  This circuit is programmed to control, according to a determined program, the contactor 610 for controlling the ignition of the electrode, each

  solenoid valves 14 and 18, as well as the fan 92.

  The microprocessor 80 can of course be voluntarily controlled, for example by means of a computer keyboard, in order to introduce various operating parameters and monitoring of the operation, and to start and end the exercise. .

  During the exercise, the trainee must try to extinguish the flames coming out of the foyer, using an extinguisher of the appropriate type made available to him. The actual presence of flames is constantly detected by the various probes 8a, 8b. Their number can of course be more than two, if

  we want to make the exercise more difficult.

  In fact, extinction is considered satisfactory when these probes no longer detect a flame, which forces the operator to perform the perfect gesture.

  The extinction can also result from sufficient cooling of the hearth, which is in this case detected by the sensor 8d which takes account of the taking of

temperature in real time.

  In each case, the circuit then causes the solenoid valve 14 to close, stopping the arrival of propane at the fire.

  The air supply can continue, which is not a problem. The air supplied 35 by the booster can also be directed to the outside, by the valve 21.

  Note that during the entire operation, the electrode is out of reach of the extinguishing agent, and also protected from moisture and water splashes resulting from the boiling of the water. E in tray 4, thanks to the fact

  that it is protected by the tube 71.

  This electrode is therefore ready for a new exercise, which can

  be repeated immediately, in the same manner as described above.

  Preferably, the circuit 80 is programmed in such a way that if the student does not switch off after a given period of time, for example after one minute, the solenoid valve 14 is completely even actuated so as to shut off the supply of propane, thereby automatically driving

extinction of the outbreak.

  If propane is detected inside enclosure L, by sensor 90 (which may be caused by a leak or non-ignition for example) or if an abnormal carbon monoxide level is detected by the sensor 91, the circuit 80 triggers the start of the fan 92, so as to evacuate these harmful gases from the room, as well as the stop of the arrival of the propane, by controlling the

the solenoid valve 14.

  In the event of an abnormal rise in temperature - which may result from an uncontrolled fire start - the temperature sensor 93 also causes the solenoid valve 14 to close, to stop the supply of propane to the burner.

  It is of course possible to provide several fireplaces according to the invention inside the same room, these different fireplaces can be supplied in whole or in part from the same propane bottle 1 and / or the

same booster 2.

  The number and positioning of the various sensors 8, 90, 91 and 93 will of course be adapted to the configuration of the room and the location of the

different homes.

  As already said, the difficulty of the exercise can be modified by varying the number and the orientation of the flame detecting probes 8a and 8b.

  Note that if the housing 7 can be placed away from any risk, we

  can use as air oxidant for ignition. For this purpose, the duct 22 being removed, the air arrives in the enclosure of the housing 7 via the air intakes 76-77 and 76'-77 'suitably adjusted, then at the mouth 76. The arrival of the pressurized fuel gas in the hollow body 72 generates sufficient suction to bring in the air.

  The correct fuel gas - combustion air dosage can be adjusted by means of cam 75 and, if necessary, by means of concealable nozzles 76-77 and

76'-77 '.

  The installation can be provided in a fixed or mobile room, for example inside a truck of the type described in EP-O 146 465 already cited.

Claims (15)

  1. Exercise installation for training people in extinguishing a fire which simulates a hydrocarbon fire, this installation comprising: - a hearth constituted by a gas burner (5) which is immersed in l 'water (E) contained in a tank (4); - Means (1, 2, 3, 30, 31) for supplying to the burner (5) a mixture of combustible gas, such as propane, and air; - An electrode (62) capable of igniting the gas at the start of the exercise; characterized in that it is provided with an ignition system comprising a housing (7) positioned near said tank (4), the interior space of which is thermally protected, and which is provided with a tube (71) heat resistant, for example stainless steel, the free end of which opens at a short distance above the surface of the water (E) contained in the tank (4), while inside this housing are arranged, on the one hand, a device (70) capable of blowing into this tube 15 (71) a mixture of combustible gas, such as propane and air, and on the other hand, a candle (6 ) provided with said electrode (62), the latter extending axially to   inside the tube (71), over only part of its length.   2. Installation according to claim 1, characterized in that said device (70) for blowing into the tube (71) the mixture of combustible gas and air is a hollow body having inlet openings (720, 730 ), for the combustible and air gas.   3. Installation according to claim 1 or 2, characterized in that it comprises a control means (8c) for the presence of flame inside the tube (71), such as an ultraviolet radiation detector, this means 25 (8c) being located inside said housing (7), at the entrance of this tube (71).   4. Installation according to one of claims 1 to 3, characterized in that said tube (71) assumes the shape of a cane, its free end portion (710) being curved and turned downward, to open out just above the   surface of the water (E) contained in the tank (4).   5. Installation according to one of claims 1 to 4, characterized by   the fact that said burner (5) is supplied by the mixture of combustible gas and air   via a "swan neck" pipe (30).   6. Installation according to one of claims 1 to 5, characterized in that it comprises means for controlling the extinction of the flames present.   in the tank (4), such as ultraviolet radiation probes (8a, 8b).   7. Installation according to one of claims 1 to 6, characterized by 5 the fact that it comprises means for controlling the extinction of the flames present in the tank (4), such as at least one temperature sensor (8d ), for example consisting of a thermocouple type probe, relayed by an intelligent sensor, suitable   to detect a temperature in real time near the fireplace.   8. Installation according to one of claims 1 to 7, characterized by 10 the fact that it comprises a control circuit capable of cutting automatically   supplying the burner with combustible gas if the extinction of the flames in the tank (4) has not been detected beyond a period of time determined from ignition.   9. Installation according to one of claims 1 to 8, characterized in that the combustible gas is supplied from a pressure tank (1) and   the air by means of a booster (2), the mixing being done by a "T" connection (3), into which the air supply duct (20) penetrates, perpendicularly, to   the interior of the conduit (16) for supplying combustible gas.   10. Installation according to claims 2 and 9 taken in combination, characterized in that the air is supplied to said device (70) at the   by means of a supply duct (22) which is connected to the air inlet mouth   (720) and is supplied with air by said booster (2).   11. Installation according to claims 2 and 9 taken in combination, characterized in that the combustible gas is supplied to said device (70) by means of a supply conduit (17) which is connected to   the fuel gas inlet mouth (730), and is supplied with combustible gas from the pressure tank (1)   12. Installation according to claim 11, characterized in that said housing (7) is equipped with an adjustment member (75) of the flow rate of combustible gas 30 admitted.   13. Installation according to claims 2 and 9 taken in combination, characterized in that the air is supplied to said device (70) by means of at least one air intake yes̋e with adjustable flow (76-77) climb in the wall of the housing (7).   14. Installation according to one of claims 1 to 13, characterized in that said housing (7) is internally lined with a layer of material thermally insulating.   15. Installation according to one of claims 1 to 14, characterized   by the fact that the burner (5) is made of intertwined stainless steel fibers.