EP0701841A1 - Feuerschutzeinrichtung - Google Patents

Feuerschutzeinrichtung Download PDF

Info

Publication number
EP0701841A1
EP0701841A1 EP95402044A EP95402044A EP0701841A1 EP 0701841 A1 EP0701841 A1 EP 0701841A1 EP 95402044 A EP95402044 A EP 95402044A EP 95402044 A EP95402044 A EP 95402044A EP 0701841 A1 EP0701841 A1 EP 0701841A1
Authority
EP
European Patent Office
Prior art keywords
network
orifice
sprinklers
valve
vacuum
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.)
Granted
Application number
EP95402044A
Other languages
English (en)
French (fr)
Other versions
EP0701841B1 (de
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0701841A1 publication Critical patent/EP0701841A1/de
Application granted granted Critical
Publication of EP0701841B1 publication Critical patent/EP0701841B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 a fire protection installation of the type comprising a network of sprinklers normally out of water and capable of being supplied with water via a control station connected to a source of pressurized water, when the sprinkler network out of water is put at atmospheric pressure as a result of the opening of said sprinkler network.
  • the role of a sprinkler installation is to detect a fire, to give an alarm and to put it out when it starts, or at least to contain it so that the extinction can be carried out by the means of the establishment equipped with said installation or by the fire brigade.
  • the sprinkler network may be permanently under water.
  • the sprinkler network is permanently maintained under compressed air.
  • a pressure drop in the air sprinkler network following the opening of a sprinkler results in a command to open a control station valve, which triggers alarm and puts the sprinkler network in communication with the pressurized water source.
  • 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 results in a relatively high air evacuation time after opening the network, which can be prohibitive in certain installations, and the need to provide the installation with a compressor device making it possible to obtain these pressures. This overpressure also causes condensation in the sprinkler network, which can again lead to the risk of ice formation as a result of the frost.
  • US-A-3,759,331 describes an installation in accordance with the preamble of claim 1.
  • the control station comprises a flexible sleeve forming part of the inlet pipe which isolates the network of sprinklers 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 prevailing in the network of sprinklers.
  • the control station comprises a three-way valve body provided with a valve, said valve body having a water inlet pipe connected to the water source and normally closed by the valve, a control chamber separated from the inlet pipe by the valve, an outlet manifold connected to the network of vacuum sprinklers and capable of communicating with the inlet pipe by displacement of the valve, and a first branch connecting the inlet pipe to the control chamber and making it possible to maintain equal pressures between the inlet duct and the control chamber, so that the valve closes the inlet duct and isolates the outlet manifold, and an actuator is provided in a second branch connecting the control chamber and the network of vacuum sprinklers, said actuator being capable of keeping said second branch closed, when the network of vacuum sprinklers is under vacuum, and definitively opening said second bypass, when the pressure in the network of vacuum sprinklers is higher than a predetermined minimum pressure lower than atmospheric pressure thus causing a pressure drop in the control chamber and the opening of the valve.
  • the actuator comprises a cylinder body having an axial orifice connected to the network of vacuum sprinklers, and a radial orifice connected to the control chamber, a warhead mounted sliding in said cylinder body and capable of closing the axial orifice together. and the radial orifice in a closed position or to put them in communication in an open position, elastic means interposed between the warhead and the cylinder body and intended to move the warhead relative to the cylinder body the closed position to the open position, when the pressure in the network of vacuum sprinklers is greater than said predetermined minimum pressure, and an external handle connected to the warhead by a control rod and allowing the displacement of the ogive in the closed position when the vacuum sprinkler network is depressed and the manual opening of the valve is triggered.
  • the cylinder body of the actuator 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 control chamber in the open position of the warhead.
  • the present invention also relates to a sprinkler specially adapted for the installation according to the invention, and of the type comprising a connector for connection to a conduit, an outlet orifice provided in said connector, a bracket secured to the connector and a fuse disposed between the outlet orifice and the stirrup and closing said outlet orifice.
  • These means include elastic means interposed between said orifice and said fuse.
  • These elastic means comprise a compression spring bearing on a flange provided in the orifice of the sprinkler and on a cap closing the orifice and having a cradle for supporting the fuse.
  • FIG. 1 there is shown by reference 1 a fire protection installation which comprises a network 2 of vacuum sprinklers 3 capable of being connected to a source of pressurized water 4 by means of 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 duct 9 communicating with the network 2 sprinklers 3 by a conduit 10 connected to a vacuum pump 11, and an upper control chamber 12 connected to the conduit 10 by a second branch 13 in which is provided an actuator 21 which controls the opening of a valve 14 arranged in the valve 6 and normally closing the inlet duct 7 and the outlet duct 9.
  • a first branch 15 connects the inlet pipe 7 with the control chamber 12, in order to maintain, in normal position, that is to say in the closed position of the valve 14, the same pressure in the inlet pipe 7 and the control chamber 12.
  • This first branch 15 also communicates with the source of pressurized water 4 through a conduit 16 fitted with a valve 17 for commissioning the valve 6.
  • a calibrated orifice 18 is provided at the connector of the conduit 16 with the first branch 15.
  • a pressure gauge 19 makes it possible to measure the pressure in the first branch 15 and a second manometer 20 makes it possible to measure the water pressure in the second branch 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 hydraulic alarm circuit 22 can also be put in communication with the first bypass 15 by via a valve 24, which makes it possible to test the proper functioning 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 the conduit 10 are disconnected from the water network under pressure 4 and can be put under vacuum by the vacuum pump 11.
  • the hydraulic alarm circuit 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 axial orifice 31 provided in a connector 31a with a conduit 13b leading to the conduit 10, and two radial orifices 32, 33 diametrically opposite and provided in connectors 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 by the other end to the warhead 37.
  • a cylindrical sealing membrane 42 is interposed between the warhead 37 and the cover 36.
  • the conduits 13a and 13b constitute the second derivation 13 described above.
  • the internal cavity 38 between the warhead 37 and the cover 36 is normally at atmospheric pressure.
  • the warhead 37 can take two positions, a closed position shown in FIG. 2 in which the warhead closes the openings 31, 32 and 33 together, 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 one another.
  • FIGS 4 and 5 show a sprinkler 3 for installation 1 according to the invention.
  • This sprinkler 3 has a connector 50 for fixing to the piping of the network 2, which has, in its center, an orifice 51 normally closed by a fuse 52, a bulb for example, bearing against a stirrup 53 secured to 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 of which end is supported on the underside of a cap 57 which normally closes the orifice 51 and which has, on its outer 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 relative to atmospheric pressure, the depression existing in the conduit 13b can maintain the warhead 37 in the position of closing, and in such a way that, when the pressure in the duct 13b increases and approaches atmospheric pressure, due to a rupture of a fuse 52 of sprinkler, the warhead 37 moves towards the opening position under the action of the tension spring 41 and pressure differences between the orifice 31 and the cavity 38.
  • the shut-off valve 8 is closed, the vacuum pump is started 11 and the warhead 37 is applied against the orifice 31 by pressing the lever 40
  • the handle 40 is released and the valve 17 is opened for the pressure setting of the control chamber 12. Balancing in the valve 6 and the closure of the valve 14 will be done via the safety valve 60 and the calibrated orifice 18.
  • the valve 6 is operational. 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 approximately - 0.6 bar.

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 Feuerschutzeinrichtung Expired - Lifetime EP0701841B1 (de)

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 true EP0701841A1 (de) 1996-03-20
EP0701841B1 EP0701841B1 (de) 1999-12-22

Family

ID=9466881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950402044 Expired - Lifetime EP0701841B1 (de) 1994-09-13 1995-09-11 Feuerschutzeinrichtung

Country Status (5)

Country Link
EP (1) EP0701841B1 (de)
AU (1) AU695191B2 (de)
CA (1) CA2158200C (de)
DE (1) DE69514058T2 (de)
FR (1) FR2724323A1 (de)

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
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
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

Citations (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
EP0209388A2 (de) * 1985-07-18 1987-01-21 Alan George William Dry Berieselungsanlage mit trockenen Rohren
US5010959A (en) * 1989-12-07 1991-04-30 Automatic Sprinkler Corporation Of America Automatic sprinkler head

Patent Citations (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
EP0209388A2 (de) * 1985-07-18 1987-01-21 Alan George William Dry Berieselungsanlage mit trockenen Rohren
US5010959A (en) * 1989-12-07 1991-04-30 Automatic Sprinkler Corporation Of America Automatic sprinkler head

Also Published As

Publication number Publication date
DE69514058T2 (de) 2000-09-14
CA2158200C (en) 2007-01-02
FR2724323A1 (fr) 1996-03-15
AU3064095A (en) 1996-03-28
AU695191B2 (en) 1998-08-06
DE69514058D1 (de) 2000-01-27
FR2724323B1 (de) 1997-02-07
CA2158200A1 (en) 1996-03-14
EP0701841B1 (de) 1999-12-22

Similar Documents

Publication Publication Date Title
CA2589115C (fr) Systeme, notamment anti-feu, avec vannes
EP0781950B1 (de) Gaszuführungssystem für ein Verteilnetz
US5927406A (en) Fire protection installation involving a normally dry network of sprinklers
FR2501511A1 (fr) Appareil de protection respiratoire fonctionnant en circuit ferme, a commande electrique et mecanique
EP1931959B1 (de) Fluidströmungs-steuerventil
EP0010465A2 (de) Sich automatisch öffnendes Ventil, insbesondere für Feuerlöschanlagen
CH419460A (fr) Appareil de thérapie à oxygène sous pression
EP0701841B1 (de) Feuerschutzeinrichtung
EP0451073B1 (de) Vorrichtung zur hydraulischen Fernsteuerung eines Gerätes, insbesondere eines Hochdruckreinigers
FR2681399A1 (fr) Dispositif d'arret automatique et de securite destine notamment aux postes de detente de gaz.
EP2958641B1 (de) Brandbekämpfungsanlage mit einem netz aus vakuumsprinklern, auslösbar durch einen mittels eines membran-master-aktuators betriebenen aktuator
WO1980002874A1 (fr) Dispositif de mesure et de controle de debits gazeux
FR2537689A1 (fr) Vanne d'extincteur a pression de fluide permanente
EP0743489B1 (de) Gaszufuhreinrichtung, Vorrichtung zur Erzeugung einer Flamme die diese Einrichtung enthält und Druckminderer dafür
WO1982000197A1 (fr) Dispositif de mesure et de controle de debits gazeux
FR2527804A1 (fr) Dispositif d'arret d'emplissage de reservoir, notamment pour gaz de petrole liquefies
EP0309633A1 (de) Alarmsystem mit pneumatischer Steuerung für ein pneumatisches Beatmungsgerät
FR2756390A1 (fr) Appareil de regulation automatique de pression de gaz
FR2757223A1 (fr) Installation hydraulique a au moins un circuit d'utilisation du type a centre ferme
FR2486234A1 (fr) Dispositif de mesure et de controle de debits gazeux
FR2458486A1 (fr) Dispositif de securite de debit, pour un reservoir de stockage d'un liquide
FR2582749A1 (fr) Raccord-demarreur pour la mise en pression progressive des installations pneumatiques
FR2495316A2 (fr) Dispositif de mesure et de controle de debits gazeux
WO1990002899A1 (fr) Vanne haute pression utilisable notamment dans un outil de coupe a jet fluide
FR2524602A1 (fr) Dispositif d'arret automatique de remplissage de reservoir sous pression pour gaz de petrole liquefies et reservoir equipe d'un tel dispositif

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE GB IT LU NL SE

17P Request for examination filed

Effective date: 19960822

17Q First examination report despatched

Effective date: 19981009

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE GB IT LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19991222

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19991222

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19991222

REF Corresponds to:

Ref document number: 69514058

Country of ref document: DE

Date of ref document: 20000127

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000303

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20140922

Year of fee payment: 20

Ref country code: DE

Payment date: 20140911

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20140917

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20140929

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69514058

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20150910

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20150910