FR3120540A1 - AUTOMATIC WATER EXTINGUISHER AND ASSOCIATED FIRE PROTECTION SYSTEM - Google Patents

Abstract

The invention relates to a sprinkler (100) intended to be mounted on an opening (42) of a pipe (40), comprising: a base (24A) having a through hole (26), and a joint (28 ) intended to seal the connection. The base (24A) further comprises two through openings oriented in a direction parallel to the main direction of the pipe (40), and the extinguisher (100) comprises a clamp (30) comprising: a strip (31) intended enclosing the pipe (40), said strap (31) being mounted on the base (24A-24G) by inserting at least one end of the strap (31) into the through openings and forming a loop around the edges of said base (24A ), and means (32) for adjusting the length of the clamp (30) so that the extinguisher (100) is suitable for being mounted on pipes (40) of different diameters. Figure for Patent: Figure 3

Description

AUTOMATIC WATER EXTINGUISHER AND ASSOCIATED FIRE PROTECTION SYSTEM

The present invention relates to the field of fire protection installations.

The invention relates in particular to an automatic water extinguisher including at least one clamp whose diameter adapts to several diameters of pipes.

The invention makes it possible in particular to adapt the extinguisher in situ to all types of pre-existing pipes.

Prior art

Fires are one of the leading causes of industrial accidents. Fire prevention is therefore a major issue for businesses and places open to the public. Indeed, any disaster related to fire can cause considerable material and human damage. Companies are therefore required to implement measures to prevent the risk of fire, any breach of which may result in legal proceedings and penalties.

Conventionally, fire protection installations are equipment configured to detect, signal and secure a given area. To do this, a fire protection installation generally comprises devices for detecting the presence of a fire, inhibition devices configured to stop the fire, alert devices configured to warn of the presence of the fire and a control station receiving information from the detection devices and triggering the inhibition and alert devices in the event of fire.

Among the different types of installation, fire protection installations using pressurized water typically include a network of pipes deployed within the area to be protected. The pipelines include automatic water extinguishers, also known as "sprinklers", which most often perform both the inhibition function and the detection function. To do this, automatic water extinguishers have a base with an opening, mounted on the pipe. This opening is held closed by a temperature sensitive bulb or fuse. In the event of a fire, the rise in temperature breaks the bulb or melts the fuse, which frees the passage for pressurized water, which squirts through the opening to hose down the inflamed area. In certain embodiments, the flow of water strikes a deflector, positioned directly opposite the opening of the sprinkler. This deflector widens and directs the flow of water towards the inflamed area.

There are also variants of this installation, in which the extinguishers do not perform the detection function, but only the sprinkler function. In this case, the pipes do not contain continuous pressurized water, but the water is routed to the extinguishers only when a fire has been detected elsewhere. In these embodiments, the sprinklers do not have a bulb or fuse to block the passage of water.

To fix the automatic water extinguishers on the pipes, there is a first system consisting of welding a sleeve around an opening made in the pipe. The sprinkler is then screwed onto the sleeve. However, this welding of the sleeve makes it impossible to use pre-painted or galvanized commercial pipes. It is necessary to paint or galvanize the sleeve to give it the same color as the rest of the pipe, which can only be done after welding, and increases the installation manufacturing process.

To overcome these drawbacks, systems in which the fixing of the sleeve on the pipe is no longer carried out by welding but via a support collar have been developed.

According to a first embodiment, the automatic water extinguisher is independent of the support collar. For example, document EP 0598151 describes a support collar comprising a connector making it possible to screw an automatic water extinguisher onto the collar. For this purpose, the support collar comprises two parts. The first part, supporting the connector, is of curved shape, to adapt to the shape of the upper portion of a pipe. The second part is a part having a spring effect and allowing the clamp to be clipped onto the pipe. As a variant, the second part can also be a rigid piece of curved shape.

According to a second exemplary embodiment, the automatic water extinguisher can be secured to the support collar. For example, document EP 3756733 describes a support collar comprising an upper part including the automatic water extinguisher and means of connection with the lower part(s). The upper part is curved in shape, in order to adapt to the shape of the upper portion of a pipe. As a variant, the upper part can also be planar, as illustrated in the documents DE9106943 and GB8422476.

The lower part is a rigid piece of curved shape, configured to adapt to the shape of the lower and/or lateral portion of the pipe.

In any case, the curved shape of the first part and/or the second part is such that it is impossible to adapt it for another pipe diameter.

Indeed, there are no standards defining a standardized size of fire installation pipe on which the sprinklers are installed. The dimensions vary according to the needs and the manufacturers. For example, the pipes typically found on the market have dimensions that vary within a range of standardized diameters between 25 and 125 mm, also designated by the acronym "DN 25" or "DN 125".

Thus, the systems proposed by the preceding documents require prior knowledge of the dimensions of the pipes in order to be able to correctly choose the size of the support collars. This system therefore has a lack of adaptability which can cause additional costs and installation delays in the event that the dimensions of the collars are not adapted to the dimensions of the pipes.

The technical problem that the invention sets out to solve is therefore to develop an automatic water extinguisher that can be adapted to all the diameters of existing pipes.

Description of the invention

To solve this problem, the invention proposes to develop an automatic water extinguisher comprising at least one clamp made of a flexible material allowing it to be adapted to the shape and size of the pipe. The invention is therefore the result of a discovery that these flexible clamps can replace the rigid clamps of the prior art without loss of quality of the installations.

Indeed, fire protection installations are subject to very stringent standards which require that the installations comply at the time of their commissioning, but also that they maintain this compliance throughout their life, in order to be effective. at the time of a fire. These standards regulate in particular the pressures that the components of the installation must withstand.

However, a person skilled in the art would naturally be led to think that the flexible clamping collars of the invention present too great a risk of wear and deformation, in particular when they are subjected to the pressures of the order of 10 bars necessary in fire installations. A person skilled in the art would thus have avoided using these clamps for the sprinkler sector in order to limit the safety risks.

Thus, the invention deals with an automatic water extinguisher intended to be mounted on an opening of a pipe, said pipe being configured to contain water under pressure, said extinguisher comprising:
- a base having a through hole, and
- A seal intended to seal the connection between the opening of said pipe and the through hole of said base.

Such an extinguisher is characterized in that:
- the base further comprises at least two through openings oriented in a direction parallel to the main direction of the pipe, and
- the extinguisher comprises at least one clamp comprising:

• a strip intended to surround the pipe, said strip being mounted on the base by inserting at least one end of the strip into the through openings and by forming a loop around the edges of said base, and
• means for adjusting the length of the at least one clamp so that the extinguisher is suitable for being mounted on pipes of different diameters.

The sprinkler can be positioned in any orientation with respect to the pipe, as long as it is fixed at an opening in the pipe. For example, the automatic water extinguisher can be positioned above the pipe, below or to the side.

The length of the clamps corresponds to the useful portion of the clamps, which is intended to be positioned against the walls of the pipe. Indeed, a clamp may have a fixed total length, but during adjustment, only a portion of the clamp can be used effectively to hold the sprinkler against the pipe. The non-useful portion can possibly be cut so as not to interfere with the extinguishing generated by the automatic extinguisher.

Advantageously, such an automatic water extinguisher makes it possible to make the installation more compact. Indeed, the invention makes it possible to dispense with the presence of a sleeve for receiving the automatic extinguisher. This configuration therefore makes it possible to reduce the height of the sprinkler. It can therefore be more easily inserted into small spaces, such as storage lockers, or restricted ceiling space for example.

In addition, clamps that can be adapted to several pipe diameters make it possible to limit the number of references of different clamp sizes, which limits production costs. Furthermore, the adjustment of the clamps can be done substantially continuously, unlike the support clamps of the prior art which have a shape adapted for a single pipe diameter.

In addition, the clamps of the invention make it possible to adapt the automatic water extinguisher in situ , without having to plan beforehand the number and the size of the clamps. This saves time and significantly reduces the cost price.

In a preferred embodiment, the sprinkler has a single clamp. Indeed, the person skilled in the art thinking that the flexible clamps of the invention present too great a risk of wear and deformation, would have to multiply the number of clamps to reinforce the structure of the clamp. However, the invention makes it possible, against all expectations, to use only a single clamp without increasing the risk of leaks, for example.

Advantageously, the means for adjusting the length of the at least one clamping collar include markings making it possible to compress the seal at a predetermined rate.

This embodiment facilitates the installation of the clamp and eliminates the risk of error. The technician can in fact rely on visual cues during installation, indicating how far to tighten the clamp so that the seal is optimally compressed so as not to create leaks depending on the diameter and the pressure. on duty. As a variant, these adjustment marks can also be replaced by or associated with a device for measuring the adjustment tension of the clamping collar.

In addition, there are several embodiments of the through openings of the base.

According to a first embodiment of the invention, the through openings are slots made in the base. According to a second embodiment, the through openings correspond to the space formed between the base and an axis attached to the base.

For these two embodiments, the openings are preferably made symmetrically with respect to a central axis of the base. This system thus makes it possible to reduce the risk of incorrect positioning of the automatic water extinguisher against the opening of the pipe.

Furthermore, in a preferred embodiment, the adjustment means are integral with one end of the strip.

Indeed, this embodiment makes it possible to tighten the automatic extinguisher on the pipe by performing a simple pulling movement of the free end of the strap.

A clamp having the preceding characteristics advantageously makes it possible to simplify and reduce the time necessary for mounting the automatic water extinguisher on the pipe. Furthermore, this assembly makes it possible to superimpose two portions of strip at the level of the wall of the pipe, which reinforces the overall resistance of the system.

However, the strap locking system could be different without this affecting the proper functioning of said invention.

In certain embodiments of the invention, the automatic water extinguisher further comprises an element for closing said through-hole sensitive to temperature and configured to release the through-hole when the temperature exceeds a threshold value so as to extract a water flow from the pipeline.

Advantageously, the automatic water extinguisher also comprises a deflector fixed above said base and intended to spray the flow of water from the pipe.

These elements form the head of the sprinkler. The invention thus covers the embodiments in which the head and the base form a monolithic block, that is to say that the base, the deflector and the arms are integral with each other. Alternatively, the invention also covers embodiments in which the head is independent of the base.

In other words, according to a first embodiment, the base and the head, comprising the deflector, the arms and/or the closure element form a monolithic block.

According to a second embodiment, the base and the head, comprising the deflector, the arms and/or the closure element are independent, the head being attached to the base by screwing, by fitting into a grooved connection or by any another means of cooperation.

According to another aspect, the invention relates to a fire protection installation including at least one automatic water extinguisher as described previously.

Brief description of figures

The manner of carrying out the invention, as well as the advantages which result therefrom, will clearly emerge from the description of the embodiments which follow, with the support of the appended figures in which:

There is a perspective view of a pipe on which are fixed four automatic water extinguishers according to four different embodiments,

there is a front view of a pipe-mounted sprinkler according to a first embodiment of the ,

There is a side view of a pipe-mounted sprinkler according to a first embodiment of the ,

There is a top view of a pipe-mounted sprinkler according to a first embodiment of the ,

There is a front view of a pipe-mounted sprinkler according to a second embodiment of the ,

There is a side view of a pipe-mounted sprinkler according to a second embodiment of the ,

There is a top view of a pipe-mounted sprinkler according to a second embodiment of the ,

There is a front view of a pipe-mounted sprinkler according to a third embodiment of the ,

There is a side view of a pipe-mounted sprinkler according to a third embodiment of the ,

There is a top view of a pipe-mounted sprinkler according to a third embodiment of the invention ,

There is a front view of a pipe-mounted sprinkler according to a fourth embodiment of the ,

There is a side view of a pipe-mounted sprinkler according to a fourth embodiment of the ,

There is a top view of a pipe-mounted sprinkler according to a fourth embodiment of the invention ,

There is a perspective view of the pedestal of a pipe-mounted sprinkler and hose clamp according to a fifth embodiment of the invention, and

There is a perspective view of the buckle of the cable tie of figure 14,

There is a partial sectional view of the means for adjusting the length of the clamp according to a first embodiment,

There is a sectional view of a first step for installing the means for adjusting the length of the clamp according to a second embodiment,

There is a sectional view of a second step for installing the means for adjusting the length of the clamp according to a second embodiment,

There is a sectional view of a third step for installing the means for adjusting the length of the clamp according to a second embodiment,

There is a sectional view of a third step for installing the means for adjusting the length of the clamp according to a third embodiment,

There is an elevated perspective view of the base of an automatic water extinguisher according to a sixth embodiment of the invention,

There is a front view of the base of the sprinkler system of the , And

There is a perspective view from above of the base of the automatic water extinguisher of the .

As shown on the , automatic water extinguishers 100, 200, 300, 400 are mounted on a pipeline 40.

Line 40 is configured to withstand pressures of around ten bars. To do this, the pipe 40 is preferably made of a material having good properties of resistance to deformation, typically steel, stainless steel, galvanized steel, copper or superchlorinated polyvinyl chloride.

In addition, the diameter of the pipe 40 can vary, typically between 25 and 125 mm, also called according to the acronym "DN 25" or "DN 125", depending on the needs related to the area to be protected, the dimensions of the installation and positioning of the sprinkler in relation to the water source.

By way of example, the fire protection installation may be formed of a central skeleton of pipes 40 of larger diameter and branches formed by pipes of smaller diameter.

In order to integrate the automatic water extinguishers 100, 200, 300, 400 of the invention, one or more openings 42 are made in the pipes 40 . The openings 42 are for example circular in top view, with a diameter of between 10 and 25 mm, also called according to the acronym “DN 10” or “DN 25”. The diameter of the opening 42 is dimensioned according to the sprinkler head which will be chosen for the extinction of the zone to be protected.

The distance separating two openings 42 is regulated generally between 2 and 4.6 m. Similarly, an opening 42 must be at least 1 m from a wall of the area to be protected.

There illustrates several embodiments of automatic water extinguishers 100, 200, 300, 400 according to the invention. All embodiments, however, have common elements. By way of example, with reference to Figures 2 to 4, the automatic water extinguishers 100, 200, 300, 400 are formed from a base 24A-24D having a substantially flat parallelepipedic shape with a thickness of between 0.5 and 1.5cm. Alternatively, the underside of pedestal 24E, 24G may have a slight curvature, as shown in Figures 14 and 18-20. The curvature of the underside is chosen to match the curvature of the larger diameter pipe 40 on which the sprinkler 500, 700 can fit.

The base 24A-24G also has a through opening 26 with a diameter of between 2 and 7 mm.

Advantageously, a gasket 28 is positioned opposite the underside of the base 24A-24G , typically between the base 24A-24G and the pipe 40 , so as to surround the openings 26 and 42 of the base 24A-24G and the pipe 40 respectively. . By way of example, seal 28 is a rubber O-ring with a thickness of between 0.2 and 0.7 cm.

The opening 26 of the base 24A-24G is preferably closed by a heat-sensitive closing element 23 , typically a glass bulb or a fuse configured to degrade when the temperature near the automatic water extinguishers 100, 200, 300, 400, 500, 600, 700 reaches a trigger threshold value, typically between 57 and 343°C.

There are several degradation temperature standards for bulbs and/or fuses. These standards are particularly recognizable by the color of the liquid contained in the ampoule. For example, the color red corresponds to a trigger temperature of 68°C.

Advantageously, a deflector 22 is positioned opposite the opening 26 of the base 24A-24E . The deflector 22 has a shape similar to an umbrella or a parasol, that is to say a circular surface, preferably curved, the concave part of which is positioned opposite the opening 26 so as to intercept a flow of water from opening 26 and redirecting it to the inflamed area. As a variant, the deflector 22 can have any other shape allowing effective dispersion of the flow of water.

Advantageously, the periphery of the deflector is provided with fins 21 . The deflector 22 is held to the base 24A-24E by side arms 29 , advantageously two in number. The assembly is for example made of brass, bronze, stainless steel, titanium or copper.

According to the embodiments illustrated in Figures 1 to 13, the assembly formed by the deflector 22 , the arms 29 and the closure element 23 , also called "head" 20 , is integral with the base 24A-24D .

In other embodiments, illustrated for example in the , the head 20, not shown, can be independent of the base 24E, 24G, that is to say that the head 20 can be attached to the base 24E, 24G by aligning the through opening of the head 20 with the through opening 26 of the base 24E, 24G. For example, the head 20 may have a male portion having a thread or a groove and cooperating with a second thread or a groove formed in the walls of the through opening 26 of the base 24E, 24G. The head 20 can thus be screwed or fixed via a grooved connector on the base 24E, 24G.

The clamp(s) 30 make it possible to fix and hold the head 20 on the pipe 40 . The clamps 30 are for example formed of a band with a width of between 0.5 and 2 cm and also comprise means 32 for adjusting the length of a clamp 30 . The base 24A-24G can be provided with one or more clamps 30 depending on the needs of the installation and the diameter of the pipe 40 .

According to a first example, the adjustment means 32 are independent of the band of the clamp 30 . They can consist of one or more inserts which can be fixed or fitted onto the strip in order to hold it in place.

As illustrated in Figures 14 to 16, the clamp 30 may be in the form of a metal strip 31 and the adjustment means may include a loop 33A , independent of the strip 31 , comprising a housing 35 in which the ends of the strip 31 are inserted. Self-drilling screws 34 make it possible to pierce the different thicknesses of strip 31 . Advantageously, the loop 33A has an opening 36 allowing the lower portion of the body of the screw 34 to be accommodated.

In order to fix the base 24E on the pipe 40 , it is positioned on the opening 42 of the pipe 40 , so that the arms of the head are aligned with the length of the pipe 40 so that the water gushes out in a direction perpendicular to the length of the pipe 40 . The two ends of the strip 31 are inserted, according to a movement from bottom to top, through the side openings 25E so that the strip 31 surrounds the pipe 40 . The ends of the strap 31 are then pulled from above the base 24E and folded over the ends of the base 24E to tighten the hose clamp 30 around the pipe 40 . The ends of the strip 31 are then brought together, thus forming a loop around each edge of the base 24E . The ends of the strip 31 are then fixed together by the adjusting means 32 .

Thus, as shown in the , the loop 33A is positioned on a first thickness of strip 31. The ends of the strip 31 are then folded down and inserted into the housing 35 of the loop 33A, then tightened so as to effectively hold the base 24E on the pipe 40. For this do, the ends of the strip 31 protrude on each side of the housing 35 over a length of at least 1cm. The ends of the strip 31 thus overlap at the level of the body 37 of the loop 33A. The screw 34 is finally inserted at the level of this superposition and pierces the two thicknesses formed by the ends of the strip 31.

Alternatively, as illustrated in Figures 17a to 17d, the adjustment means 32 are integral with one end of the strip. Thus, the clamp 30 may be in the form of a metal strip 31 and the adjustment means may include a loop 33B comprising a housing 35 , fixed to the end of the strip 31 .

The housing 35 can take the form of a tube of parallelepiped section, intended to allow the passage of part of the metal strip 31 . In addition, fastening means, such as a self-drilling screw 34 , can be placed on the housing 35 , perpendicular to the length of the tube and to the direction of movement of the strip 31 in the tube, so as to restrict the movements of the strip 31 as it is compressed around the pipe 40 and inserted into the tube.

In an alternative embodiment not shown, the fixing means include a ball contained in the tube and intended to block the movements of the strip. To do this, the tube has a variable section. Typically, the section of the tube shrinks from dimensions greater than the diameter of the ball to dimensions substantially equal to the diameter of the ball. Thus, during the sliding of the strip in the tube, the ball is driven in a direction opposite to the direction of insertion of the strip, towards the part of the tube of reduced dimensions, where it is blocked. The ball thus also blocks the strip.

The spaces 25F of the base 24F are used to create fixing points for the strip 31. To do this, as illustrated in the , the end of the strip 31 not provided with the loop 33B is inserted according to a first movement M1 to surround a first fixing point of the base 24F. This movement M1 is carried out by inserting the strip 31 into the space 25F from the upper face of the base 24F to the lower face of the base 24F until the strip 31 arrives along the pipe 40.

The strip 31 is then moved around the pipe 40 to the second attachment point of the base 24F. As shown on the , the strip 31 is then introduced into the space 25F following the movement M2 to surround the second attachment point of the base 24F. This movement M2 is carried out by inserting the strip 31 into the space 25F from the lower face of the base 24F to the upper face of the base 24F until the strip 31 arrives along the pipe 40.

The strip 31 is then introduced into the loop 33B following the movement M3, illustrated on the . The clamp 30 is then compressed around the pipe 40 by pulling on the end of the strip 33 after it has passed through the housing of the loop 33B, according to the movement M4.

In certain embodiments, when the desired compression tension of the strip 31 is obtained, means for fixing the strip 31 in the housing can be inserted into the loop 33C by means of an action in a direction M5, perpendicular to the length of housing 35, as shown in the . Subsequently, the remaining end of the strip 31 protruding from the loop 33C can optionally be cut.

In addition, the strip may also have notches or grooves making it possible to accommodate or block the adjustment means 32 .

Advantageously, the clamping collar 30 also has markings making it possible to adapt the clamping to the pressure and to the diameter prevailing in the pipe 40 .

There are several embodiments for attaching cable tie 30 to base 24A-24E and 24G shown in Figures 2-14 and 18-20.

As illustrated in Figures 2 to 4, in a first embodiment, the base 24A has a parallelepipedal shape with bevels at the corners. The base 24A has a length of between 2 and 10 cm and a width of between 2 and 5 cm. The length of the base 24A is intended to be positioned in a direction perpendicular to the length of the pipe 40 . The base 24A has at its ends two lateral grooves 25A formed in the thickness of the base 24A , of substantially parallelepipedal shape and intended to allow the passage of the strip 31 of the clamp 30 .

As illustrated in Figures 5 to 7, in a second embodiment, the base 24B has a parallelepiped shape with a length between 4 and 10 cm and a width between 4 and 10 cm. The length of the base is intended to be oriented in a direction perpendicular to the length of the pipe 40 . The base 24B has a central parallelepiped-shaped groove as well as two lateral recesses making it possible to accommodate and fix the arms 29 . In addition, the base 24B has at its ends two grooves 25B , formed in the thickness of the base 24B , of substantially parallelepipedic shape and intended to allow the passage of the strip 31 of the clamp 30 .

As illustrated in Figures 8 to 10, in a third embodiment, the base 24C has a parallelepipedic shape with a length between 2 and 10 cm and a width between 2 and 5 cm. The length of the base is intended to be oriented in a direction perpendicular to the length of the pipe 40 . The base 24C has two recesses for creating the openings 25C . The end of the recesses has two axes 43 . Thus, the strip 31 of the clamp 30 passes through the openings 25C and forms a loop around the axes 43 .

As illustrated in FIGS. 11 to 13, in a fourth embodiment, the base 24D has a parallelepiped shape with a length between 2 and 8 cm and a width between 2 and 5 cm. The length of the base 24D is intended to be oriented in a direction perpendicular to the length of the pipe 40 .

The base 24D also has means for fixing two pins 43 attached on either side of the base 24D . The axes 43 are positioned so as to leave a free space 25D between the edges of the base 24D and the axes 43 . This space 25D is intended to allow the passage of the band 31 of the clamp 30 , the latter then being able to form a loop around the axes 43 .

As shown on the , in a fifth embodiment of the invention, the base 24E comprises grooves 25E formed in the thickness of the base 24E. A bore 46 is also provided on the lower portion of the grooves 25E allowing the groove to open out onto the outside. This bore 46 allows the strip 31 to better adapt to the shape of the pipe 40.

As illustrated in FIGS. 18 to 20, in a sixth embodiment, the base 24G has a substantially hexagonal shape with a length between 2 and 8 cm and a width between 2 and 5 cm. The length of the base 24G is intended to be oriented in a direction perpendicular to the length of the pipe 40 .

The base 24G also has two pairs of lateral grooves 25G formed on either side of the base 24G in the thickness of the base 24G , of substantially parallelepiped shape and intended to allow the passage of two clamps 30 . Preferably, the grooves are spaced 1 to 3 cm apart. This type of 24G base is used for pipes 40 of larger diameter, typically greater than DN50.

The mounting of the collars of the two clamps 30 is carried out in the same way as described in FIGS. 17a-17d, the clamps 30 being able to be mounted simultaneously or one after the other.

To conclude, the invention makes it possible to develop an automatic water extinguisher that can be adapted to all existing pipe diameters.

Claims (11)

A sprinkler (100, 200, 300, 400, 500, 600, 700) for mounting over an opening (42) of a pipe (40), said pipe (40) being configured to contain water under pressure, said extinguisher (100, 200, 300, 400, 500, 600, 700) comprising:
- a base (24A-24G) having a through hole (26), and
- a seal (28) intended to seal the connection between the opening (42) of said pipe (40) and the through hole (26) of said base (24A-24G),
characterized in that :
-the base (24A-24G) further comprises at least two through openings oriented in a direction parallel to the main direction of the pipe (40), and
- the extinguisher (100, 200, 300, 400, 500, 600, 700) comprises at least one clamping collar (30) comprising:

• a strap (31) for surrounding the pipe (40), said strap (31) being mounted on the base (24A-24G) by inserting at least one end of the strap (31) into the through openings and forming a loop around edges of said base (24A-24G), and
• means (32) for adjusting the length of the at least one clamp (30) so that the extinguisher (100, 200, 300, 400, 500, 600, 700) is able to be mounted on pipes (40) of different diameters.

Extinguisher according to claim 1, characterized in that the extinguisher (100, 200, 300, 400, 500, 600, 700) comprises a single clamping collar (30). Extinguisher according to claim 1 or 2, characterized in that e THE means (32) for adjusting the length of the at least one clamping collar (30) include markings making it possible to compress the joint (28) at a predetermined rate. Extinguisher according to one of Claims 1 to 3, characterized in that the through openings are slots provided in the base (24A, 24B, 24E, 24G). Extinguisher according to one of Claims 1 to 4, characterized in that the through openings correspond to the space formed between the base (24C, 24D, 24F) and an axis attached to the base (24C, 24D, 24F). Extinguisher according to one of Claims 1 to 5, characterized in that the adjustment means (32) are integral with one end of the strip (31). Extinguisher according to one of Claims 1 to 6, characterized in that it further comprises a closing element (23) of said through-hole (26) sensitive to temperature and configured to release the through-hole (26). Extinguisher according to one of Claims 1 to 7, characterized in that it further comprises a deflector (22) fixed above the said base (24A-24G) and intended to spray the flow of water from the pipe ( 40). Extinguisher according to one of Claims 7 or 8, characterized in that the base (24A-24D) and the head (20), comprising the deflector (22), the arms (29) and/or the closing element (23) form a monolithic block. Extinguisher according to one of Claims 7 or 8, characterized in that the base (24E-24G) and the head (20), comprising the deflector (22), the arms (29) and/or the closing element (23) are independent, the head (20) being attached to the base (24E-24G) by screwing. Fire protection installation including at least one extinguisher (100, 200, 300, 400, 500, 600, 700) according to one of Claims 1 to 10.