EP0701841B1 - Installation de protection contre l'incendie - Google Patents

Installation de protection contre l'incendie Download PDF

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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
Application number
EP19950402044
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0701841A1 (fr
Inventor
Maurice Kadoche
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0701841A1 publication Critical patent/EP0701841A1/fr
Application granted granted Critical
Publication of EP0701841B1 publication Critical patent/EP0701841B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)
EP19950402044 1994-09-13 1995-09-11 Installation de protection contre l'incendie Expired - Lifetime EP0701841B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9410892 1994-09-13
FR9410892A FR2724323A1 (fr) 1994-09-13 1994-09-13 Installation de protection contre l'incendie

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 (enrdf_load_stackoverflow)
AU (1) AU695191B2 (enrdf_load_stackoverflow)
CA (1) CA2158200C (enrdf_load_stackoverflow)
DE (1) DE69514058T2 (enrdf_load_stackoverflow)
FR (1) FR2724323A1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
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
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
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
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)

* Cited by examiner, † Cited by third party
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 (en) * 1985-07-18 1990-02-20 Alan George William Dry Dry sprinkler system
US5010959A (en) * 1989-12-07 1991-04-30 Automatic Sprinkler Corporation Of America Automatic sprinkler head

Also Published As

Publication number Publication date
AU695191B2 (en) 1998-08-06
FR2724323A1 (fr) 1996-03-15
DE69514058T2 (de) 2000-09-14
FR2724323B1 (enrdf_load_stackoverflow) 1997-02-07
DE69514058D1 (de) 2000-01-27
EP0701841A1 (fr) 1996-03-20
AU3064095A (en) 1996-03-28
CA2158200C (en) 2007-01-02
CA2158200A1 (en) 1996-03-14

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