EP1013308A1 - Verfahren und Vorrichtung zum Freigeben von Druckgas aus einer Zusatzpatrone insbesondere für Feuerlöschvorrichtungen - Google Patents

Verfahren und Vorrichtung zum Freigeben von Druckgas aus einer Zusatzpatrone insbesondere für Feuerlöschvorrichtungen Download PDF

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Publication number
EP1013308A1
EP1013308A1 EP98870278A EP98870278A EP1013308A1 EP 1013308 A1 EP1013308 A1 EP 1013308A1 EP 98870278 A EP98870278 A EP 98870278A EP 98870278 A EP98870278 A EP 98870278A EP 1013308 A1 EP1013308 A1 EP 1013308A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
pyrotechnic
auxiliary
perforation
fire
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.)
Withdrawn
Application number
EP98870278A
Other languages
English (en)
French (fr)
Inventor
Elie Levy
Francis Bechet
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.)
Delta Extinctors SA
Original Assignee
Delta Extinctors SA
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 Delta Extinctors SA filed Critical Delta Extinctors SA
Priority to EP98870278A priority Critical patent/EP1013308A1/de
Priority to EP99870282A priority patent/EP1013309A1/de
Publication of EP1013308A1 publication Critical patent/EP1013308A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/66—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers
    • A62C13/70—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers characterised by means for releasing the pressure gas

Definitions

  • the present invention relates to a method and device which allow the release of a propellant enclosed in a sealed cartridge and intended in particular for an apparatus for combating fire such as a portable fire extinguisher.
  • the latter constitutes the dispersed phase while the dispersion medium is a gas.
  • Relaxation at atmospheric pressure of a such dispersed pressurized system defines operation of a powder extinguisher and as such, it is assimilated to a smoke aerosol, the gas causing the powder when trigger, as defined by fire extinguishers included in the European standard and the EN3 standard.
  • Auxiliary pressure fire extinguishers are fire extinguishers in which the dispersion medium (gas) and the dispersed phase (extinguishing agent) are contained in separate tanks.
  • the extinguishing agent in powder form is placed in the tank forming the extinguisher itself while the gas (CO 2 or N 2 ) is confined under high pressure in an auxiliary tank called an auxiliary gas cartridge.
  • these cartridges are placed in the extinguisher or outside the extinguisher. In such extinguishers, the diffusion of the dispersing gas in the extinguishing powder within the tank can only take place after the gas contained under high pressure in the auxiliary cartridge has been released.
  • auxiliary gas cartridges used in fire-fighting appliances are generally constituted by a metal tank in treated steel capable of withstanding strong fluctuations in internal pressure itself dependent on temperature (isochoric law). These auxiliary cartridges are hermetically sealed with a metal membrane calibrated called a seal or rupture disc.
  • This piercer is adapted to be operated either directly (according to a system called “coup de fist "), either indirectly by manual action on force amplifying levers fitted with springs reminder.
  • the section of the hole drilled in the cover remains reduced in because of the very design of the mechanisms used (stop and / or return spring systems) but mainly due to the effect obtained by the counter pressure developed at the time of the piercing of the cover when the gas in the auxiliary cartridge begins to expand to the fire extinguisher tank.
  • the present invention aims to provide a new process and a new device allowing the release of a propellant enclosed in a cartridge auxiliary used for example for a wrestling device against fire such as a portable fire extinguisher, which not have the disadvantages of state of the technical.
  • a particular object of the present invention aims to provide a method and a device comprising a lid piercer allowing optimal perforation of the seal of this auxiliary propellant cartridge which is used in or for a fire extinguisher, whatever the extinguishing agent or the charge of the extinguisher used.
  • the present invention relates to a method for releasing a propellant contained in a waterproof auxiliary cartridge intended in particular to be used in or for control devices fire such as fire extinguishers, in which one performs a perforation of an operculum or rupture disc of said auxiliary cartridge, characterized in that said perforation is obtained by the use of a means of pyrotechnic perforation.
  • this perforation is carried out by the explosion of a pyrotechnic cartridge delivering in an expansion chamber a certain amount of gas whose pressure allows a piercer to perforate said cover (or rupture disc) of the auxiliary cartridge.
  • the engagement of the perforation means pyrotechnic is carried out (possibly so manual) by moving a mechanical striker, projected towards said pyrotechnic cartridge so as to cause it to explode.
  • the type of pyrotechnic cartridge allows annular percussion without primer.
  • the type of cartridge pyrotechnic allows a central percussion, preferably effected by the use of an auxiliary primer.
  • the present invention also relates to a device for releasing a contained propellant in a sealed auxiliary cartridge intended in particular for be used in or for control devices the fire, characterized in that it includes a means of pyrotechnic perforation of the cover (or disc of break) of the auxiliary cartridge.
  • this means of perforation pyrotechnic includes a piercer associated with a cartridge pyrotechnics, the explosion of said cartridge pyrotechnic to generate a quantity of gas whose pressure is sufficient to generate the projection from said piercer towards the cover (or rupture disc) of the auxiliary cartridge and the perforation thereof.
  • the piercer is presented under the shaped like a metallic point, usually shaped conical.
  • the pyrotechnic cartridge does not include a primer.
  • the pyrotechnic cartridge includes a primer which allows to exert a central pressure on said cartridge pyrotechnic.
  • the device also includes training means presenting themselves for example in the form of an arming spring and stop or blockage occurring for example under the shape of a pin held by a safety system to move and / or stop the striker to the pyrotechnic cartridge.
  • the device also has holes regulator ensuring the depressurization of the gases caused by the explosion of the pyrotechnic cartridge.
  • a final aspect of the present invention relates to a fire-fighting device, in especially a portable fire extinguisher, comprising the device of the invention.
  • Figure 1 shows a device for release of a propellant contained in a cartridge waterproof auxiliary which can be adapted to a fire fighting, especially a fire extinguisher portable with the general reference 12.
  • the cartridge auxiliary may be integrated into the extinguisher or be outside of it.
  • the device of the invention comprises as a piercer (or piercer for a seal) a conical metal tip 6 set in the rest position, which closes expansion orifices 7 and faces the metal seal 8 of an auxiliary gas cartridge 9 (for example a CO 2 or N 2 gas cartridge).
  • a piercer or piercer for a seal
  • auxiliary gas cartridge 9 for example a CO 2 or N 2 gas cartridge
  • the device of the invention comprises a pyrotechnic cartridge 4 including explosion in a chamber expansion 5 allows the release of a certain amount of gas, the increasing pressure of which reaches a certain value that will propel the piercer 6 towards the cover 8 (movement of the piercer 6 and drilling of cover 8).
  • the piercer 6 will release the expansion ports 7, causing depressurization in the expansion chamber 5, while the piercer 6 continues its inertial travel towards the inside of the cartridge gas auxiliary 9 after drilling the cover 8.
  • the gas confined under high pressure relaxes polytropically by through the openings 7 completely cleared then that simultaneously, the piercer 6 sees its speed decrease under the action of the gaseous backflow of expansion opposite to its path. Therefore, after the perforation, the piercer 6 is found in the auxiliary gas cartridge 9.
  • the relaxed gas released (dispersing medium) is channeled down the fire extinguisher tank containing the extinguishing agent (dispersed phase).
  • the engagement of the pyrotechnic cartridge 4 can be carried out without primer (from manually) using a striker 1 held in a so-called high position and armed by an arming spring or any other means capable of ensuring movement from said striker to the pyrotechnic cartridge 4.
  • a arming spring allows, by its relaxation, to drive the striker 1 when the pin 3 is removed after breaking of the security system 2 holding said pin.
  • the security system 2 comprises a classic metal pin that can be sealed.
  • the release device gas trapped in the auxiliary cartridge allows a optimal and particularly rapid perforation of the cover present on said cartridge.
  • the present invention can be applied to particularly advantageous to all electric firing in pyrotechnic cartridges.
  • This type of device and method can be used for auxiliary cartridges used in or even outside of fighting devices fire, and in particular portable fire extinguishers.
  • the value of the average drilling pressure is 730 bars.
  • the tables below give the results of measurements carried out on auxiliary CO 2 gas cartridges intended for portable powder extinguishers with a load of 9 kg. They make it possible to calculate in each case the quantity of CO 2 in solid phase (dry ice) resulting after each expansion at atmospheric pressure.
  • the filling density of the cartridges is in accordance with European standards EN3 and is in particular less than 75%, the weight of the quantity of CO 2 gas is 150 grams, the filling filling tolerance of +/- 5 g being neglected in the results.

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  • 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)
EP98870278A 1998-12-24 1998-12-24 Verfahren und Vorrichtung zum Freigeben von Druckgas aus einer Zusatzpatrone insbesondere für Feuerlöschvorrichtungen Withdrawn EP1013308A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP98870278A EP1013308A1 (de) 1998-12-24 1998-12-24 Verfahren und Vorrichtung zum Freigeben von Druckgas aus einer Zusatzpatrone insbesondere für Feuerlöschvorrichtungen
EP99870282A EP1013309A1 (de) 1998-12-24 1999-12-23 Verfahren und Vorrichtung zum Freigeben von Druckgas aus einer Zusatzpatrone insbesondere für Feuerlöschvorrichtungen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98870278A EP1013308A1 (de) 1998-12-24 1998-12-24 Verfahren und Vorrichtung zum Freigeben von Druckgas aus einer Zusatzpatrone insbesondere für Feuerlöschvorrichtungen

Publications (1)

Publication Number Publication Date
EP1013308A1 true EP1013308A1 (de) 2000-06-28

Family

ID=8237141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98870278A Withdrawn EP1013308A1 (de) 1998-12-24 1998-12-24 Verfahren und Vorrichtung zum Freigeben von Druckgas aus einer Zusatzpatrone insbesondere für Feuerlöschvorrichtungen

Country Status (1)

Country Link
EP (1) EP1013308A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001047603A1 (en) * 1999-12-23 2001-07-05 Domenico Piatti Automatic, pyrotechnic fire extinguisher
US20170335983A1 (en) * 2016-05-20 2017-11-23 S.P.A. Automotive Limited Valve assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004981A1 (de) * 1978-04-25 1979-10-31 Lehavot Cheroshet Verschlussvorrichtung für einen Löschmittelbehälter
EP0061964A1 (de) * 1981-03-30 1982-10-06 COMPAGNIE CENTRALE SICLI (Société Anonyme) Zu oder geöffnetes sprengladungbetätigtes Ventil
JPS62234766A (ja) * 1986-04-02 1987-10-15 U G Kk 自動車用自動消火装置
WO1989007962A1 (en) * 1988-02-24 1989-09-08 Alister Leslie Mcculloch Fire extinguisher outlet head
DE4225997A1 (de) * 1992-08-06 1994-02-10 Total Feuerschutz Gmbh Schnellöffnungsventil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004981A1 (de) * 1978-04-25 1979-10-31 Lehavot Cheroshet Verschlussvorrichtung für einen Löschmittelbehälter
EP0061964A1 (de) * 1981-03-30 1982-10-06 COMPAGNIE CENTRALE SICLI (Société Anonyme) Zu oder geöffnetes sprengladungbetätigtes Ventil
JPS62234766A (ja) * 1986-04-02 1987-10-15 U G Kk 自動車用自動消火装置
WO1989007962A1 (en) * 1988-02-24 1989-09-08 Alister Leslie Mcculloch Fire extinguisher outlet head
DE4225997A1 (de) * 1992-08-06 1994-02-10 Total Feuerschutz Gmbh Schnellöffnungsventil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 105 (M - 681) 6 April 1988 (1988-04-06) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001047603A1 (en) * 1999-12-23 2001-07-05 Domenico Piatti Automatic, pyrotechnic fire extinguisher
US7172031B2 (en) 1999-12-23 2007-02-06 Domenico Piatti Automatic, pyrotechic fire extinguisher
US20170335983A1 (en) * 2016-05-20 2017-11-23 S.P.A. Automotive Limited Valve assembly

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