WO2014128387A2 - Chandelle sèche destinée à être montée dans une installation de protection contre les incendies du type comprenant un réseau de sprinklers sous vide - Google Patents
Chandelle sèche destinée à être montée dans une installation de protection contre les incendies du type comprenant un réseau de sprinklers sous vide Download PDFInfo
- Publication number
- WO2014128387A2 WO2014128387A2 PCT/FR2014/050284 FR2014050284W WO2014128387A2 WO 2014128387 A2 WO2014128387 A2 WO 2014128387A2 FR 2014050284 W FR2014050284 W FR 2014050284W WO 2014128387 A2 WO2014128387 A2 WO 2014128387A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- candle
- sprinkler
- dry
- axis
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/68—Details, e.g. of pipes or valve systems
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/62—Pipe-line systems dry, i.e. empty of extinguishing material when not in use
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
- A62C37/12—Releasing means, e.g. electrically released heat-sensitive with fusible links
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
- A62C37/14—Releasing means, e.g. electrically released heat-sensitive with frangible vessels
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/002—Fire prevention, containment or extinguishing specially adapted for particular objects or places for warehouses, storage areas or other installations for storing goods
- A62C3/004—Fire prevention, containment or extinguishing specially adapted for particular objects or places for warehouses, storage areas or other installations for storing goods for freezing warehouses and storages
Definitions
- Dry candle intended to be mounted in a fire protection system of the type comprising a network of vacuum sprinklers.
- the field of the invention is that of the design and manufacture of fire fighting equipment and installations. More specifically, the invention relates to the devices designated by the term "dry candle", intended in particular to fight against fires in cold rooms.
- the role of an automatic fire extinguishing system using sprinklers is to detect, as soon as possible, a fire and then automatically trigger the extinguishing system, at least locally, while emitting an alarm.
- the purpose of the installation is to contain as much as possible the fire, before the arrival of the firefighters who then take over the installation to extinguish the fire.
- the fire-fighting installations are classified in three categories, namely:
- sprinklers are networked so as to be regularly distributed on the site to be protected.
- sprinklers include:
- a fixing connection for connecting the sprinkler to a pipe, this fixing fitting having a nozzle for the passage of water to release to extinguish the fire;
- the fuse is calibrated to burst when a certain temperature is exceeded, thus releasing the nozzle from its sealing cap.
- underwater all the piping in the installation is filled with water, right down to the sprinklers. The water is therefore waiting behind the sealing means and when the fuse bursts, the water flows through the nozzle of the sprinkler fitting whose fuse has burst.
- underwater systems are not suitable for sites with frost risks. Indeed, in case of frost, the water can not flow.
- the gel can cause damage to the piping of the installation (deformation or burst pipes).
- the installation is then put out of water.
- the site to be protected is heated to avoid any risk of frost.
- energy consumption, and therefore the heating bill can be considerable, even prohibitive.
- Another way to fight against freezing is to add an antifreeze to the water of the installation, such as glycol, which is a toxic and carcinogenic product.
- the water can in some cases take up to 60 seconds to reach the sprinkler whose fuse is burst, which is certainly in line with the standard in force but may be too long vis-à-vis vis of some fire starts.
- vacuum systems have been designed.
- a vacuum is created in the pipes extending between a general valve and the set of sprinklers.
- all the pipes separating the valve from the sprinklers are under vacuum.
- vacuum is an active energy that serves as a functional source for sprinkler monitoring. Indeed, if a fuse of one of the sprinklers bursts, the atmospheric pressure wins the entire installation, which causes the change of state of an actuator which, in turn, opens the general valve of arrival of water. It follows that the water invades quickly and without obstacles the entire installation to the sprinklers, the water flowing through the sprinkler (s) where the fuse has burst. The still active vacuum in the networks quickly attracts the extinguishing water to the sprinklers whose fuse has burst. The tripping time of the actuator is very short, since when a fuse bursts, the "vacuum" installation immediately generates a phenomenon of suction of the air outside the installation. It should be noted that this suction can be beneficial, the suction effect on the fire focus to reduce the intensity of it.
- the water inlet time of the sprinkler with the fuse blown is less than 60 seconds.
- dry candles provide the link between a pipe of the network of sprinklers "under vacuum” and the interior of the cold room.
- the dry candles have an elongate body having at one of its ends a connection piece to a pipe and at the other end thereof, a sprinkler of the type described above.
- the height of the elongate body is sized according to the thickness of the heat insulating wall of the ceiling of the cold room. Of course, this dimension of the elongate body is such that the sprinkler carried by the lower end of the dry candle extends into the internal volume of the cold room.
- the design of the dry candles is designed so that when the sprinkler system is flooded, the dry candles whose fuses did not burst are not filled with water. Indeed, even after evacuation of the sprinkler system, water could stagnate in the elongated body of a candle and, given the temperature in the cold room, would be allowed to freeze. It would obviously result that the candle would be defeated in a fire situation inside the cold room for one or both of the following reasons:
- the atmospheric pressure could not extend into the sprinkler network because of the ice present in the elongated body obstructing the penetration of the ambient air of the cold room;
- the dry candles include closure means of the connection, consisting of a first nozzle, between the candle and the piping that carries it.
- the shutter means at the first nozzle remain in the closed position and isolate the candle from the water present in the sprinkler system.
- the sprinkler of a dry candle has been triggered, it is replaced in its entirety.
- the sprinklers present at the lower end of the dry candles comprise, in addition to the fuse and the sealing cap, means for ejecting the cover.
- ejection means are mounted on each sprinkler.
- These ejection means are conventionally constituted by a spring inserted in a cylindrical part mounted in the nozzle of the sprinkler. One end of the spring is supported at the bottom of the cylindrical part, while the other end of the spring bears on the shutter held in position by the fuse. The spring is of course in the compressed state.
- the lid may remain in a position of partial closure of the nozzle of the connector or in a position detrimental to the good diffusion of water.
- the spring is not ejected from the nozzle and therefore remains inside of it.
- the nozzle is not completely clear, which partially prevents the entry of air into the network.
- the consequence is that the vacuum of the installation is slowed down and, consequently, the triggering of the actuator is delayed, which can reach 30 to 40 seconds.
- the invention particularly aims to overcome the disadvantages of the prior art.
- the invention aims to provide a dry candle whose design can limit replacement costs in case of triggering thereof.
- the invention also aims to provide such a dry candle whose maintenance can be performed quickly and easily.
- the invention also aims to provide such a dry candle which ensures, at the sprinkler, a total release of the nozzle of the fitting in case of bursting fuse.
- the object of the invention is to guarantee in all circumstances a minimum tripping time of the actuator of a "vacuum" system.
- the candle comprising an elongate body having at one of its ends a connection piece to a pipe, including a first nozzle capable of connecting the candle to the pipe, the candle including means for sealing the first nozzle, the other end carrying a sprinkler comprising:
- the fixing fitting having a second nozzle
- means for ejecting the sealing cap characterized in that it comprises connecting means between the closure means of the first nozzle and the sealing cap of the second nozzle, said means being movable so as to coincide the closed position of the seal shutter with the closed position of the closure means of the first nozzle, the sprinkler attachment connection is secured to an end portion of the body having means for discharging water comprising an inclined pipe, going back to the outside the end section, and including a ball adapted to allow the water flow in the lower position in the inclined conduit and to prohibit the flow of water in the upper position in the inclined conduit.
- the means for discharging water are provided, as will be explained in more detail later, to evacuate the water introduced into the elongated body of the dry candle due to slight leaks.
- the means of water evacuation are simple and act efficiently and naturally depending on the quantity and the water pressure in the dry candle, as follows:
- the connecting means comprise an axis, the body of the candle including guide means in longitudinal translation of said axis.
- closure means of the first nozzle are advantageously secured to one end of said axis.
- the guide means preferably comprise at least one intermediate piece between two sections of the body of the candle, the part being perforated and having a central slide inside which the axis is guided in translation.
- At least one spring is mounted between a stop means on the axis and the intermediate piece, the mounting of the spring being made so that the spring is in compression in the closed positions of the seal. shutter and means for sealing the first nozzle.
- Such an assembly will contribute to the responsiveness of the dry candle in case of triggering thereof due to the bursting of the fuse of his sprinkler.
- the axis advantageously carries a stop intended to abut against an intermediate piece and to retain the axis when the closure cap and the closure means of the first nozzle means are not in position d shutter.
- said end section is connected to another portion of the body by a perforated intermediate piece and having a central slide inside which the axis is guided in translation.
- a perforated intermediate piece and having a central slide inside which the axis is guided in translation.
- the means for ejecting the shutter of the sprinkler are mounted outside the second nozzle and act in traction on the shutter.
- the spring acts by pulling on the lid, which ensures its extraction and ejection from the sprinkler.
- FIG. 1 is a schematic longitudinal sectional view of a dry candle according to the invention, in its triggered configuration
- FIG. 2 is a schematic longitudinal sectional view of a dry candle according to the invention, in its service configuration
- FIG. 3 and 4 show schematically a sprinkler according to a first embodiment of the invention, respectively seen in section and viewed from the side;
- a dry candle according to the invention comprises a body 5 having:
- the connecting piece 50 is intended to allow the connection of the dry candle to a pipe, and includes for this purpose a first nozzle 51 capable of ensuring the connection between the candle and the pipe.
- the dry candle further includes closure means 60 of this first nozzle 51, these shutter means being movable between a closed position of the nozzle 51 ( Figure 2) and a release position of the nozzle 51 (figure 1 ).
- the sprinkler carried by the dry candle according to the invention is of the type comprising:
- An attachment 1 having an external thread for screwing it on a pipe with a complementary thread, to connect the sprinkler to the pipe, the connection having a second nozzle 10 for communicating with the interior of piping ;
- a fuse 2 consisting in practice by a bulb containing a liquid and a planned air bubble, according to the conventional technique of the fuses used on the sprinkler, to expand and cause the burst of the bulb if the temperature at which the fuse is subjected exceeds a predetermined threshold;
- the fuse 2 presses, at one of its ends, on the cap 3 so as to maintain it in its closed position of the second nozzle, the other end of the fuse resting on a lug 20 integral with the stirrup and, in this case, the deflector 12 (the pin 20 is in practice also a screw fixing means of the deflector on the stirrup).
- the fuse 2 bears, by one of its ends, on the lid 3 so as to hold it in its closed position on the second nozzle 10, the other end of the fuse being supported on a lug 20 integral with the yoke and, in this case, the baffle 12 (the lug 20 being in practice also a screw fixing means of the deflector on the 'stirrup).
- the dry candle comprises connecting means 6 between the closure means 60 of the first nozzle 51 on the one hand, and on the other hand, the sealing cap 3 of the second nozzle 10 , these connecting means being movable so as to make the closure position of the lid 3 coincide with the closed position of the closure means 60 of the first nozzle 51.
- the connecting means 6 comprise an axis extending inside the elongated body of the candle, and on the end of which are secured the closure means 60 of the first nozzle 51.
- the end of the axis constituting the connecting means and provided with a thread, and the closure means 60 are constituted by a head having a bore, so that the head of the closure means is screwed to the corresponding end of the axis.
- the axis has a cup 61 intended to bear, as shown in Figure 2, against the base 30 of the shutter 3.
- the axis of the connecting means is guided in longitudinal translation, this using guide means comprising, as shown in Figures 1 and 2, two intermediate parts 52, 53 Each of these intermediate pieces is perforated inside the body of the candle, and has a diametrical branch 520, 530 having in its middle a slide 521, 531 inside which the axis of the connecting means 6 is guided in translation.
- the elongated body 5 of the candle is constituted by the assembly of the following parts:
- the axis of the connecting means has a stop means 62 provided for mounting a spring 7 in compression between the stop means 62 and the intermediate piece 52. compression in the service configuration of the candle, that is to say when it is present with the cap and the closure means of the first nozzle both in the closed position as shown in Figure 2.
- the spring 7 tends to push the axis of the connecting means downwards, to its relaxed position as shown in Figure 1, which causes the displacement of the shutter means 60 of the first nozzle 51, so as to release it and to communicate the interior of the candle with the piping (not shown) of the sprinkler network.
- the axis of the connecting means carries a stop 63 intended to bear against an intermediate piece, in this case the intermediate piece 53, to retain the axis when the lid 3 and the closure means 60 are not in the closed position ( Figure 1).
- the end section 56 has water evacuation means comprising:
- the plug 562 itself has a cavity communicating with the conduit 560, and extending in the continuity of the conduit 560 with the same inclination.
- the plug 560 On the inner side of the end section, the plug 560 has a ball retaining grid, through which water can flow.
- the head of the plug 560 is traversed by an orifice for discharging the water towards the outside of the end section.
- the ball is at the bottom of the plug cavity (the ball having a diameter that does not obstruct the passage of water in the lower position in the plug cavity).
- the system of evacuation means according to the invention is advantageous in case of slight leaks between the candle and the conduit to which it is connected. Indeed, in the presence of slight leaks (which will not trigger the installation that is intended to restore the vacuum in case of leaks below a predetermined level), the candle will allow, from the low position of the ball allowing a air passage to the outer end of the inclined pipe, an aspiration tending to evacuate the water droplets that may be present in the candle.
- the ball rises against the head of the cap, and is pressed against the orifice through the head of the plug so as to obstruct it and to prohibit the flow of water.
- the sprinkler comprises ejection means mounted outside the nozzle 10 and acting in traction on the lid 3.
- ejection means mounted outside the nozzle 10 and acting in traction on the lid 3.
- the ejection means are constituted by a spring, and more specifically by a torsion spring 4, as illustrated by FIGS. 5 to 7.
- the spring 4 comprises:
- a winding 40 of one or more turns
- the spring 4 In the relaxed state, the spring 4 has a configuration in which the branches 41 and 42 are spaced from each other, as shown in FIG. 5, whereas, in the armed state, the two branches 41 and 42 are brought closer to each other, as shown in FIG. 6.
- the branches 41 and 42 In the armed state, according to the operating principle of a torsion spring, the branches 41 and 42 tend to exert a force on the elements that hold them in this position, to return to their respective positions corresponding to the relaxed state, as shown in Figure 5 in the relaxed state.
- the lid 3 has a flange 31 extending out of the second nozzle 10 and having a flared shape.
- the lid 3 is held in abutment against a washer 11 mounted at the end of the nozzle 10.
- the flared flange 31 of the seal with the washer 11 a space 110.
- the spring 4 is mounted on the sprinkler so that one of its branches (in this case the branch 41) comes to be placed in the space 110, that is to say between the flange 31 flared and the washer 11 sprinkler. More specifically, the space 110 between the flange 31 and the washer 11 is provided so that the corresponding branch of the spring is stuck in this space once the fuse installed. The spring is thus safely kept in the waiting position.
- the branch 41 has a curved shape intended to match the shape of the collar, the latter having a circular section.
- the washer 11 has a passage of circular shape and that the cap 30 of the cap 3 is introduced into the passage of the washer, thus extending inside the second nozzle 10, until that the washer of flared shape, and more precisely frustoconical, comes to bear on the edges of the passage of the washer, closing it.
- the branch 41 of the spring 4 is thus inserted into the space 110 between the flange 31 and the washer 11, while the other leg 42 of the spring 4 is held in a retaining means present on the coupling, positioned so that the spring takes of course its armed configuration as shown in Figure 6.
- this retaining means takes the form of an orifice 130 formed at the base of the stirrup 13, and intended to be traversed by the branch 42 as illustrated by FIG.
- the branch 42 intended to be inserted into the orifice 130 formed at the base of the stirrup, has two parts, namely: a proximal portion 421, at the exit of the winding;
- the two parts form a bend so that the end portion is able to go up through the orifice 130 of the stirrup, this with respect to the proximal part (depending on the position of in height of the winding with respect to the orifice, it can also be considered that the proximal portion descends relative to the distal portion once it is inserted into the orifice).
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2014220503A AU2014220503B2 (en) | 2013-02-21 | 2014-02-13 | Dry visor intended to be mounted in a fireprotection installation of the type comprising a network of vacuum sprinklers |
EP14710001.0A EP2958638B1 (fr) | 2013-02-21 | 2014-02-13 | Chandelle sèche destinée à être montée dans une installation de protection contre les incendies du type comprenant un réseau de sprinklers sous vide |
RU2015139349A RU2648218C2 (ru) | 2013-02-21 | 2014-02-13 | Сухой цилиндр, предназначенный для использования в установке пожаротушения с вакуумной спринклерной системой |
US14/769,718 US9526935B2 (en) | 2013-02-21 | 2014-02-13 | Dry visor intended to be mounted in a fire protection installation of the type comprising a network of vacuum sprinklers |
PL14710001T PL2958638T3 (pl) | 2013-02-21 | 2014-02-13 | Sucha świeca przeznaczona do zamocowania w instalacji przeciwpożarowej typu zawierającego sieć tryskaczy próżniowych |
CA2899173A CA2899173A1 (fr) | 2013-02-21 | 2014-02-13 | Chandelle seche destinee a etre montee dans une installation de protection contre les incendies du type comprenant un reseau de sprinklers sous vide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1351518 | 2013-02-21 | ||
FR1351518A FR3002152B1 (fr) | 2013-02-21 | 2013-02-21 | Chandelle seche destinee a etre montee dans une installation de protection contre les incendies du type comprenant un reseau de sprinklers sous vide |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2014128387A2 true WO2014128387A2 (fr) | 2014-08-28 |
WO2014128387A3 WO2014128387A3 (fr) | 2014-12-31 |
Family
ID=48795644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2014/050284 WO2014128387A2 (fr) | 2013-02-21 | 2014-02-13 | Chandelle sèche destinée à être montée dans une installation de protection contre les incendies du type comprenant un réseau de sprinklers sous vide |
Country Status (8)
Country | Link |
---|---|
US (1) | US9526935B2 (fr) |
EP (1) | EP2958638B1 (fr) |
AU (1) | AU2014220503B2 (fr) |
CA (1) | CA2899173A1 (fr) |
FR (1) | FR3002152B1 (fr) |
PL (1) | PL2958638T3 (fr) |
RU (1) | RU2648218C2 (fr) |
WO (1) | WO2014128387A2 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11241598B2 (en) | 2015-11-11 | 2022-02-08 | The Reliable Automatic Sprinkler Co. Inc. | Extended coverage dry pendent storage sprinkler for a large storage freezer |
FR3085856B1 (fr) | 2018-09-14 | 2023-12-01 | Exec | Chandelle seche pour reseau sous vide d'extinction d'incendie |
CN114470598B (zh) * | 2021-12-20 | 2022-11-29 | 大连万达集团股份有限公司 | 消防水泵状态监测系统 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090211772A1 (en) * | 2004-12-01 | 2009-08-27 | Tyco Fire Products Lp | Dry sprinkler with diverter seal assembly |
KR20120098205A (ko) * | 2011-02-28 | 2012-09-05 | 주식회사 진화이앤씨 | 수계 소화설비용 스프링클러 연결부 동파방지장치 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU142152A1 (ru) * | 1961-03-24 | 1961-11-30 | И.М. Цудиков | Вакуумна спринклерна установка |
US5188185A (en) * | 1991-06-19 | 1993-02-23 | Grinnell Corporation | Dry sprinkler |
-
2013
- 2013-02-21 FR FR1351518A patent/FR3002152B1/fr not_active Expired - Fee Related
-
2014
- 2014-02-13 WO PCT/FR2014/050284 patent/WO2014128387A2/fr active Application Filing
- 2014-02-13 PL PL14710001T patent/PL2958638T3/pl unknown
- 2014-02-13 AU AU2014220503A patent/AU2014220503B2/en not_active Ceased
- 2014-02-13 RU RU2015139349A patent/RU2648218C2/ru not_active IP Right Cessation
- 2014-02-13 US US14/769,718 patent/US9526935B2/en not_active Expired - Fee Related
- 2014-02-13 CA CA2899173A patent/CA2899173A1/fr not_active Abandoned
- 2014-02-13 EP EP14710001.0A patent/EP2958638B1/fr not_active Not-in-force
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090211772A1 (en) * | 2004-12-01 | 2009-08-27 | Tyco Fire Products Lp | Dry sprinkler with diverter seal assembly |
KR20120098205A (ko) * | 2011-02-28 | 2012-09-05 | 주식회사 진화이앤씨 | 수계 소화설비용 스프링클러 연결부 동파방지장치 |
Also Published As
Publication number | Publication date |
---|---|
CA2899173A1 (fr) | 2014-08-28 |
FR3002152B1 (fr) | 2015-12-04 |
PL2958638T3 (pl) | 2018-08-31 |
RU2015139349A (ru) | 2017-03-29 |
WO2014128387A3 (fr) | 2014-12-31 |
EP2958638B1 (fr) | 2018-03-14 |
RU2648218C2 (ru) | 2018-03-22 |
AU2014220503B2 (en) | 2017-05-25 |
FR3002152A1 (fr) | 2014-08-22 |
US9526935B2 (en) | 2016-12-27 |
EP2958638A2 (fr) | 2015-12-30 |
US20150375024A1 (en) | 2015-12-31 |
AU2014220503A1 (en) | 2015-08-13 |
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