EP0701841B1 - Installation de protection contre l'incendie - Google Patents
Installation de protection contre l'incendie Download PDFInfo
- Publication number
- EP0701841B1 EP0701841B1 EP19950402044 EP95402044A EP0701841B1 EP 0701841 B1 EP0701841 B1 EP 0701841B1 EP 19950402044 EP19950402044 EP 19950402044 EP 95402044 A EP95402044 A EP 95402044A EP 0701841 B1 EP0701841 B1 EP 0701841B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- network
- orifice
- sprinklers
- pressure
- evacuated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- 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
Definitions
- the present invention relates to an installation for protection against a fire of the type comprising a network of sprinklers normally out of water and capable of being supplied with water via a connected control station has a pressurized water source, when the sprinkler network outside water is brought to atmospheric pressure following the opening of said network of sprinklers.
- the role of a sprinkler installation is to detect a focus fire, give an alarm and turn it off when it starts, or at least shut it down contain in such a way that extinction can be carried out by the means of the establishment equipped with said installation or by the fire brigade.
- the network of sprinklers can be permanently underwater.
- the network of sprinklers are permanently kept under compressed air.
- a fall of pressure in the air sprinkler network following the opening of a sprinkler causes a command to the opening of a checkpoint valve, which triggers the alarm and puts the network of sprinklers in communication with the source of pressurized water.
- the disadvantage of these current air installations is that the air contained in the network is at a pressure at least equal to 2 bars. This entails a time relatively high air exhaust after opening the network, which can be prohibitive in certain installations, and the need to provide the installation of a compressor device making it possible to obtain these pressures. This overpressure also causes condensation in the sprinkler network which can again entail the risk of ice formation due to frost.
- US-A-3,759,331 describes an installation in accordance with the preamble of claim 1.
- the checkpoint has a flexible sleeve that is part of the arrival pipe which isolates the sprinkler network from the water source under pressure by pinching the flexible sleeve by means of a backing plate and a rod actuated by a membrane control device, sensitive to the pressure in the sprinkler network.
- the invention differs from this state of the art by the characteristics defined in the characterizing part of claim 1.
- the actuator has a cylinder body having an axial port connected to the network of vacuum sprinklers, and a radial orifice connected to the control chamber, a warhead slidably mounted in said body cylinder and capable of closing together the axial orifice and the radial orifice in a closed position or to port them into a position opening, elastic means interposed between the warhead and the body of cylinder and intended to move the warhead relative to the cylinder body of the closed position to open position, when the pressure in the network of vacuum sprinklers is greater than said minimum pressure predetermined, and an external handle connected to the warhead by a rod control and allowing the displacement of the warhead in the position of closing when the vacuum sprinkler network is depressed as well than manual triggering of the valve opening.
- the actuator cylinder body further comprises a second radial orifice connected to a hydraulic alarm network and capable of being closed by the warhead in the closed position and to communicate with the room in the open position of the warhead.
- These means include elastic means interposed between said orifice and said fuse.
- These elastic means include a spring compression by pressing on a flange provided in the orifice of the sprinkler and on a cap closing the orifice and having a fuse support cradle.
- FIG. 1 there is shown by reference 1 an installation of fire protection which includes a network 2 of vacuum sprinklers 3 capable of being connected to a source of pressurized water 4 via a checkpoint 5.
- the control station 5 comprises in particular a three-way valve 6, of the deluge type, having an inlet duct 7 connected to the water source 4 by a barrier valve 8, an outlet conduit 9 communicating with the network 2 sprinklers 3 through a conduit 10 connected to a vacuum pump 11, and a chamber control top 12 connected to conduit 10 by a second bypass 13 in which an actuator 21 is provided which controls the opening of a valve 14 disposed in the valve 6 and normally closing the inlet duct 7 and the outlet duct 9.
- a first branch 15 connects the inlet duct 7 with the chamber control 12, in order to maintain, in normal position, that is to say in valve 14 closed position, the same pressure in the supply line 7 and the control chamber 12.
- This first branch 15 communicates also with the source of pressurized water 4 through a conduit 16 equipped with a valve 17 for commissioning the valve 6.
- a calibrated orifice 18 is provided in the connection of conduit 16 with the first branch 15.
- a pressure gauge 19 allows to measure the pressure in the first branch 15 and a second pressure gauge 20 makes it possible to measure the water pressure in the second bypass 13 between the actuator 21 and the control chamber 12.
- the second bypass 13 is connected to a hydraulic alarm circuit 22 via the actuator 21 and a non-return valve 23.
- the circuit hydraulic alarm 22 can also be put in communication with the first bypass 15 via a valve 24 which allows test the correct operation of the alarm circuit 22.
- the actuator 21 closes the second bypass 13 and the valve 14 closes the outlet conduit 9.
- the network 2 of sprinklers 3, and conduit 10 are disconnected from the water network under pressure 4 and can be put under vacuum by the vacuum pump 11.
- the circuit hydraulic alarm 22 is also out of water.
- Reference 25 represents an alarm pressure switch, reference 26 a filter and reference 27 a hydraulic alarm.
- FIGS 2 and 3 show in detail the actuator 21.
- This actuator comprises a cylinder body 30 having an orifice axial 31 provided in a connector 31a with a conduit 13b leading to the conduit 10, and two radial holes 32, 33 diametrically opposite and provided in fittings 34, 35 with a conduit 13a leading to the control chamber 12 and the circuit 22.
- the end of the cylinder body 30 opposite the axial orifice 31 is closed by a knurled cover 36.
- a warhead 37 is slidably mounted in the internal cavity 38 of the cylinder body 30.
- the warhead 37 is integral with a rod 39 which passes through the cover 36 and which comprises, at its outer end, a lever 40.
- a tension spring 41 is fixed by one of its ends to the cover 36 and through the other end to the warhead 37.
- a sealing membrane cylindrical 42 is interposed between the warhead 37 and the cover 36.
- the conduits 13a and 13b constitute the second derivation 13 described above.
- the cavity internal 38 between the warhead 37 and the cover 36 is normally under pressure atmospheric.
- the warhead 37 can take two positions, a closed position shown in Figure 2 in which the warhead closes the openings 31, 32 together and 33, and an open or trigger position, in which the warhead 37 is held on the side of the cover 36 by the tension spring 41, the orifices 31, 32 and 33 then communicating with each other.
- FIGS 4 and 5 show a sprinkler 3 intended for installation 1 according to the invention.
- This sprinkler 3 has a connector 50 for fixing it to the piping of network 2, which has, in its center, an orifice 51 normally closed by a fuse 52, a bulb for example, pressing against a bracket 53 integral with the connector 50, and a deflector 54 fixed on the stirrup 53 opposite the orifice 51.
- a flange 55 is mounted which serves to support a first end of a compression spring 56, the other end of which is in support on the underside of a cap 57 which normally closes the orifice 51 and which has, on its external face, a support cradle 58 for the base of the bulb.
- the tightening of the fuse 52 compresses the cap 57 and the spring 56.
- the tension spring 41 of the actuator 21 is calibrated in such a way that when the network 2 of sprinklers is in depression compared to the pressure atmospheric, the depression existing in the duct 13b can maintain the warhead 37 in the closed position, and in such a way that when the pressure in line 13b increases and approaches pressure atmospheric, following a rupture of a fuse 52 of sprinkler, the warhead 37 moves to the open position under the action of the tension spring 41 and pressure differences between orifice 31 and cavity 38.
- the procedure is as follows: On closes the shut-off valve 8, starts the vacuum pump 11 and apply the warhead 37 against the orifice 31 by pressing the lever 40.
- the handle 40 is released and the valve 17 for pressurizing the control chamber 12.
- the balancing in the valve 6 and the closing of the valve 14 will be done by through the safety valve 60 and the calibrated orifice 18.
- the valve 6 is operational. He ... not All that remains is to open the shut-off valve 8.
- the pressure in the network 2 of sprinklers is less than atmospheric pressure by a value of - 0.6 bar about.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Description
Claims (7)
- Installation de protection contre l'incendie du type comportant un réseau (2) de sprinkleurs (3) normalement hors eau et susceptible d'être alimenté en eau par l'intermédiaire d'un poste de contrôle (5) relié a une source d'eau sous pression (4), lorsque le réseau (2) de sprinkleurs (3) hors eau est mis à la pression atmosphérique par suite de l'ouverture dudit réseau de sprinkleurs, le réseau (2) de sprinkleurs (3) étant sous vide et étant normalement maintenu en dépression par rapport à la pression atmosphérique, le poste de contrôle (5) comportant un corps de soupape (6) muni d'un clapet (14), ledit corps de soupape (6) présentant un conduit d'arrivée (7) d'eau connecté à la source d'eau (4) et normalement obturé par le clapet (14), et un collecteur de sortie (9) relié au réseau (2) de sprinkleurs (3) sous vide et susceptible de communiquer avec le conduit d'arrivée (7) par déplacement du clapet (14) sous l'action d'un actuateur (21), caractérisée par le fait que le corps de soupape (16) est à trois voies et comporte une chambre de commande (12) séparée du conduit d'arrivée (7) par le clapet (14) et reliée au conduit d'arrivée (7) par une première dérivation (15), ladite première dérivation (15) permettant de maintenir l'égalité des pressions entre le conduit d'arrivée (7) et la chambre de commande (12), afin que le clapet (14) obture le conduit d'arrivée (7) et isole le collecteur de sortie (9), et par le fait que l'actuateur (21) est prévu dans une deuxième dérivation (13) reliant la chambre de commande (12) et le réseau (2) de sprinkleurs (3) sous vide, ledit actuateur (21) étant susceptible de maintenir ladite deuxième dérivation (13) fermée, lorsque le réseau (2) de sprinkleurs (3) sous vide est en dépression, et d'ouvrir définitivement ladite deuxième dérivation (13), lorsque la pression dans le réseau (2) de sprinkleurs (3) sous vide est supérieure à une pression minimum prédéterminée inférieure à la pression atmosphérique provoquant ainsi une chute de pression dans la chambre de commande (12) et l'ouverture du clapet (14).
- Installation selon la revendication 1, caractérisée par le fait que l'actuateur (21) comporte un corps de cylindre (30) présentant un orifice axial (31) connecté au réseau (2) de sprinkleurs (3) sous vide, et un orifice radial (32) connecté à la chambre de commande (12), une ogive (37) montée coulissante dans ledit corps de cylindre (30) et susceptible d'obturer ensemble l'orifice axial (31) et l'orifice radial (32) dans une position de fermeture ou de les mettre en communication dans une position d'ouverture, des moyens élastiques interposés entre l'ogive (37) et le corps de cylindre (30) et destinés à déplacer l'ogive (37) par rapport au corps de cylindre (30) de la position de fermeture à la position d'ouverture, lorsque la pression dans le réseau (2) de sprinkleurs (3) sous vide est supérieure à ladite pression minimum prédéterminée, et une manette (40) extérieure reliée à l'ogive (37) par une tige de commande (39) et permettant le déplacement de l'ogive (37) dans la position de fermeture lors de la mise en dépression du réseau (2) de sprinkleurs (3) sous vide ainsi que le déclenchement manuel de l'ouverture du clapet (14).
- Installation selon la revendication 2, caractérisée par le fait que le corps de cylindre (30) de l'actuateur (21) comporte, en outre, un deuxième orifice radial 33) connecté à un réseau d'alarme (22) hydraulique et susceptible d'être obturé par l'ogive (37) en position de fermeture et de communiquer avec la chambre de commande (12) en position d'ouverture de l'ogive (37).
- Installation selon l'une des revendications 1 à 3 dans laquelle chaque sprinkleur (3) du réseau de sprinkleur sous vide comporte un fusible (52) interposé entre un étrier (53) et un orifice de sortie (51) d'eau dudit sprinkleur, caractérisée par le fait qu'il est prévu entre ledit orifice de sortie (51) et ledit fusible (52) des moyens pour déboucher positivement ledit orifice (51) en cas de destruction du fusible (52).
- Installation selon la revendication 4, caractérisée par le fait que les moyens pour ouvrir positivement ledit orifice (51) comportent des moyens élastiques (56) interposés entre ledit orifice (51) et ledit fusible (52).
- Installation selon la revendication 5, caractérisée par le fait que les moyens élastiques comportent un ressort de compression (56) en appui sur une collerette (55) prévue dans l'orifice (51) du sprinkleur (3) et sur un cabochon (57) obturant ledit orifice (51) et présentant un berceau de support (58) du fusible (52).
- Installation selon l'une des revendications 1 à 6, caractérisée par le fait qu'elle comporte des moyens (11) pour réaliser une dépression dans le réseau (2) de sprinkleurs (3) sous vide.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9410892A FR2724323A1 (fr) | 1994-09-13 | 1994-09-13 | Installation de protection contre l'incendie |
FR9410892 | 1994-09-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0701841A1 EP0701841A1 (fr) | 1996-03-20 |
EP0701841B1 true EP0701841B1 (fr) | 1999-12-22 |
Family
ID=9466881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19950402044 Expired - Lifetime EP0701841B1 (fr) | 1994-09-13 | 1995-09-11 | Installation de protection contre l'incendie |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0701841B1 (fr) |
AU (1) | AU695191B2 (fr) |
CA (1) | CA2158200C (fr) |
DE (1) | DE69514058T2 (fr) |
FR (1) | FR2724323A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10208052C1 (de) * | 2002-02-25 | 2003-11-27 | Preussag Ag Minimax | Sprinkleranlage zum einfachen Wechseln von Sprinklern |
FR3002150B1 (fr) | 2013-02-21 | 2018-03-16 | Vactec | Sprinkler comprenant un opercule d'obturation maintenu en position par un fusible a l'aide d'un moyen d'appui deplacable |
FR3002163B1 (fr) * | 2013-02-21 | 2016-12-30 | Vactec | Restricteur de pression pneumatique dont l'ajutage secondaire est interchangeable, et installation de lutte contre les incendies correspondante |
FR3002154B1 (fr) | 2013-02-21 | 2015-12-04 | Vactec | Installation de lutte contre les incendies, incluant un reseau de sprinklers sous vide, susceptibles d'etre declenches par un actuateur pilote par un actionneur maitre |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3759331A (en) * | 1972-04-27 | 1973-09-18 | Factory Mutual Res Corp | Fire protection system utilizing dry pipes normally maintained in a vacuum |
FR2225927A5 (en) * | 1973-04-13 | 1974-11-08 | Materiel Ind Projection | Remotely controlled fire extinguisher installation - has 3-way valve between fluid reservoir and discharge circuit |
CA1265972A (fr) * | 1985-07-18 | 1990-02-20 | Alan George William Dry | Systeme extincteur a sec |
US5010959A (en) * | 1989-12-07 | 1991-04-30 | Automatic Sprinkler Corporation Of America | Automatic sprinkler head |
-
1994
- 1994-09-13 FR FR9410892A patent/FR2724323A1/fr active Granted
-
1995
- 1995-09-11 EP EP19950402044 patent/EP0701841B1/fr not_active Expired - Lifetime
- 1995-09-11 DE DE1995614058 patent/DE69514058T2/de not_active Expired - Lifetime
- 1995-09-13 AU AU30640/95A patent/AU695191B2/en not_active Expired
- 1995-09-13 CA CA 2158200 patent/CA2158200C/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2158200A1 (fr) | 1996-03-14 |
FR2724323A1 (fr) | 1996-03-15 |
EP0701841A1 (fr) | 1996-03-20 |
DE69514058T2 (de) | 2000-09-14 |
AU3064095A (en) | 1996-03-28 |
CA2158200C (fr) | 2007-01-02 |
AU695191B2 (en) | 1998-08-06 |
DE69514058D1 (de) | 2000-01-27 |
FR2724323B1 (fr) | 1997-02-07 |
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