EP0245143B1 - Perfectionnements à un extincteur à décharge rapide et à son procédé de fabrication - Google Patents

Perfectionnements à un extincteur à décharge rapide et à son procédé de fabrication Download PDF

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Publication number
EP0245143B1
EP0245143B1 EP87400894A EP87400894A EP0245143B1 EP 0245143 B1 EP0245143 B1 EP 0245143B1 EP 87400894 A EP87400894 A EP 87400894A EP 87400894 A EP87400894 A EP 87400894A EP 0245143 B1 EP0245143 B1 EP 0245143B1
Authority
EP
European Patent Office
Prior art keywords
recipient
extinguisher
container
tube
opening
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
EP87400894A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0245143A1 (fr
Inventor
Pierre Sassier
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.)
Kidde Dexaero Te Antony Frankrijk
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to AT87400894T priority Critical patent/ATE53948T1/de
Publication of EP0245143A1 publication Critical patent/EP0245143A1/fr
Application granted granted Critical
Publication of EP0245143B1 publication Critical patent/EP0245143B1/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
    • A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/08—Containers destroyed or opened by bursting charge

Definitions

  • the invention relates to a rapid discharge fire extinguisher.
  • a fire extinguisher usually comprises a container containing an inhibiting body, for example in liquid form, such as that known under the name freon or halon, which vaporizes when it is relaxed, as well as a gas, usually nitrogen, under a pressure of several tens of bars.
  • an inhibiting body for example in liquid form, such as that known under the name freon or halon, which vaporizes when it is relaxed, as well as a gas, usually nitrogen, under a pressure of several tens of bars.
  • This container is closed by a cover which tears when the charge of a detonator explodes. This explosion is often triggered automatically when a start of fire has been detected, for example using an infrared and / or ultra-violet detector.
  • Freon or halon vaporized opposes the fire by its high inhibitory power reducing to almost zero the chemical reaction of combustion.
  • the extinguisher act as quickly as possible after detection, that is to say that the detonator must explode as soon as possible and empty the container in the shortest possible time.
  • the invention allows the production of a rapid discharge extinguisher having the same qualities of rapidity of discharge as that of said French patent but the cost of which is clearly lower.
  • the fire extinguisher comprises, in a manner known per se (by patent FR-A-2,565,495): a container which contains an inhibiting liquid which vaporizes when it is expanded and a gas under pressure, a lid closing the container and which is perpendicular to the axis of the latter, and an explosive charge disposed at the end of a pyrotechnic rod extending along the axis of the container, this charge being inside the container in the vicinity of the cover and acting by shock wave along the axis, the container having in the vicinity of its outlet a shape minimizing the losses of singular loads.
  • This fire extinguisher is characterized in that the pyrotechnic rod bears, for example by means of radial arms, against the internal wall of the narrowed outlet end of the container, the support piece also ensuring centering of the load along the axis. At the other end, the pyrotechnic rod is secured to the bottom of the container.
  • the pyrotechnic rod also bears against the internal surface of the side wall of the container, but this support is located in the part of the largest diameter of the container.
  • the support part is of substantially smaller dimensions than in the previous patent, which makes it possible to reduce the manufacturing cost and above all, as will be seen below, to use the technique known as "spinning" for the manufacture of the container itself and to dispense with welding inside this container.
  • the discharge time is 35 to 40 milliseconds from the detection of fire, practically as in the embodiment described in patent FR-A-2,965,495; but the manufacturing cost is much lower.
  • the quick discharge extinguisher is intended to be installed in an explosive charge storage location.
  • Fire detection is carried out using an infrared and / or ultraviolet radiation sensor which controls the rapid discharge of the freon as soon as the fire has been detected.
  • This fire extinguisher comprises a metal container 10 charged with liquid freon and nitrogen under a pressure of the order of 60 bars.
  • the container 10 is, as will be seen later in connection with FIGS. 3a to 3d, manufactured by the spinning technique. It has a general shape of revolution around an axis 11. Its central part 12 is constituted by a cylinder while its front part, or neck, 13 has a section which narrows until the opening 14. In the immediate vicinity of this opening 14 the container 10 has another cylindrical section 15 externally threaded to receive a diffuser 16.
  • the neck 13 Immediately at the rear of the cylindrical section 15 the neck 13 has, in section through a plane passing through the axis 11, a form of arc of a center circle arranged outside the container.
  • This form is favorable to the minimization of the losses of singular charges (the losses of charges due to the form proper), which maximizes the output flow of the freon (and thus minimizes the discharge time).
  • the opening 14 is closed by a cover 17 constituted by a membrane which tears when an explosive charge 18 bursts inside the container 10, in the vicinity of this cover 17.
  • the charge 18 is of the type producing a detonation, that is to say that it explodes with a shock wave moving at a speed greater than that of sound.
  • This charge 18 contains for example lead azide. It is at the front end of a pyrotechnic rod 19 formed by a tube 20 with an axis 11, extending over practically the entire length of the container 10 with a front end 21, where the charge 18 is located, at the level of the zone 15 and a posterior end 22 which crosses the bottom 23 of the container.
  • the pyrotechnic rod 19 further comprises another tube 24 housed in the tube 20 and which is coaxial with it.
  • the length of the tube 24 is equal to that of the tube 20 minus the length of the load 18.
  • the diameter of the tube 24 is practically equal to that of the load 18.
  • the latter is thus housed in a chamber 25 at the end 21 of the tube 20 which is limited, perpendicular to the axis 11, on one side by the end 26 of the inner tube 24 and on the other side by another cover 27 closing the tu be 20.
  • the load 18 occupies practically all the volume of this chamber 25.
  • the tube 24 contains the electrical conductors 28 which connect the load 18 to a trigger system associated with a detector outside the container 10.
  • the tube 20 in order to support the pyrotechnic rod 19 in the vicinity of the front end 21, provision is made for the tube 20 to have on its outer face a thickening 30 which ends towards the front, that is to say towards the opening of the bottle, by a shoulder 31 forming a stop against which the posterior end of a cylindrical ring 32 of internal diameter slightly greater than the external diameter of the tube 20 rests and from which three radial arms project 33, 34, 35 ( Figure 2) regularly arranged around the axis 11, that is to say which make between them angles of 120 °.
  • the extra thickness 30 of the tube 20 is, for example, constituted by a simple ring surrounding the tube 20 and welded thereto.
  • the length of the ring 32 is less than the length separating the shoulder 31 from the anterior end of the tube 20.
  • the bars 33, 34 and 35 are supported by their front edges 33 1 , 34 1 and 35 1 against a shoulder 36 which has the internal face of the container 10 in its cylindrical part 15 in the vicinity of the 'opening.
  • the axial length of this ring 32 is substantially smaller than the diameter of the internal surface of the cylindrical part 15.
  • the rear end 22 of the tube 20 is introduced into a cylindrical opening 39 of a part 38 screwed into a tapping 40 of the bottom 23.
  • the fixing of the end of the tube 20 to the part 38 is carried out by welding 41 of the face front end of this part 38 with a part of the external surface of the end 22 of the tube 20.
  • the bottom 23 comprises, in addition to the part 38, in a conventional manner, a filling valve 42 constituting at the same time a safety valve against overpressures as well as a pressure switch 43 for detecting pressure drops in the container 10 .
  • the container 10 is usually arranged with its axis 11 in a vertical position, the opening being downward to facilitate the evacuation of the inhibitor liquid.
  • the axis of the tube 20 is very precisely coincident with the axis 11 of the container 10.
  • the radial support of the tube 20 takes place in the center of the container 10 which leaves between this radial support and the end 21 a considerable length which does not allow the central position of the explosive charge to be ensured. .
  • the position of the charge 18 along the axis makes it possible to minimize the pressure drops and therefore to minimize the discharge time of the inhibiting liquid.
  • the container 10 is manufactured by the so-called spinning technique which is illustrated diagrammatically in FIGS. 3a to 3d.
  • the warping is carried out using another press 53 whose internal shape 54 corresponds to the desired shape for the front end 13, 14, 15.
  • the bottle is finished by various machining of the bottom 23 and of the cylindrical end 15, in particular for the external threading of this end.
  • the only internal machining is that which it is necessary to carry out to produce the shoulder 36. This machining is for example a simple bore.
  • the minimization of the freon discharge time is favored by the nature and the position of the load 18 as well as by the shape of the container 10. But, compared to the previous embodiment, the better positioning of the load 18, thanks to the ring 32 and its radial arms 33, 34 and 35 in the vicinity of the opening, further improves the speed of the discharge by minimizing the pressure drops.
  • the gain obtained by the better positioning of the load 18 compensates for the pressure drop caused by the presence of the radial arms 33, 34, 35 in the vicinity of the opening.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Air Bags (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Building Environments (AREA)
EP87400894A 1986-04-25 1987-04-17 Perfectionnements à un extincteur à décharge rapide et à son procédé de fabrication Expired - Lifetime EP0245143B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87400894T ATE53948T1 (de) 1986-04-25 1987-04-17 Feuerloescher mit schnellentleerung und verfahren zur herstellung von solchen feuerloeschern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8606024 1986-04-25
FR8606024A FR2597757B1 (fr) 1986-04-25 1986-04-25 Perfectionnements a un extincteur a decharge rapide et a son procede de fabrication

Publications (2)

Publication Number Publication Date
EP0245143A1 EP0245143A1 (fr) 1987-11-11
EP0245143B1 true EP0245143B1 (fr) 1990-06-20

Family

ID=9334631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400894A Expired - Lifetime EP0245143B1 (fr) 1986-04-25 1987-04-17 Perfectionnements à un extincteur à décharge rapide et à son procédé de fabrication

Country Status (7)

Country Link
US (1) US4760886A (es)
EP (1) EP0245143B1 (es)
AT (1) ATE53948T1 (es)
CA (1) CA1314026C (es)
DE (1) DE3763288D1 (es)
ES (1) ES2015587B3 (es)
FR (1) FR2597757B1 (es)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4834187A (en) * 1987-03-11 1989-05-30 Parker Hannifin Corporation Explosion suppression system
US5050683A (en) * 1990-05-14 1991-09-24 The United States Of America As Represented By The Secretary Of The Army Extinguishing rocket/missile solid propellants
SK283213B6 (sk) * 1994-10-20 2003-03-04 Protechnik Produktions Gmbh Spôsob potláčania výbušne prebiehajúceho horenia, najmä uhľovodíkov a zariadenie na vykonávanie tohto spôsobu
US5590717A (en) * 1995-12-11 1997-01-07 Mcbay, Deceased; Henry R. C. Fire extinguishing capsule
US5718294A (en) * 1996-09-20 1998-02-17 Fike Corporation Fire suppression or explosion protection system having a manual actuator for an electrically responsive initiator or gas-generating cartridge activator
ES2130984B1 (es) * 1997-03-19 2000-03-01 Garcia Calvo Benigno Dispositivo para extinguir incendios a distancia.
AU753238B2 (en) * 1997-09-09 2002-10-10 F F Seeley Nominees Pty Ltd Improvements in actuators
AUPO906897A0 (en) 1997-09-09 1997-10-02 F F Seeley Nominees Pty Ltd Improvements in actuators
US6012531A (en) * 1998-04-20 2000-01-11 Ryan; James W. Fire extinguishing bomb
IT1309902B1 (it) * 1999-12-23 2002-02-05 Domenico Piatti Estintore automatico di incendio pirotecnico.
DE10021511B4 (de) 2000-05-03 2004-03-18 Bayern-Chemie Gmbh Löschgerät
US20070163787A1 (en) * 2006-01-05 2007-07-19 Universal Propulsion Company, Inc. Fire suppression device
GB2536630B (en) * 2015-03-22 2019-12-04 Graviner Ltd Kidde Fire suppressant apparatus
GB2536631B (en) * 2015-03-22 2019-12-04 Graviner Ltd Kidde Fire suppressant apparatus
GB2537414B (en) * 2015-04-17 2019-11-13 Graviner Ltd Kidde Pyrotechnic valve
FR3044931B1 (fr) * 2015-12-15 2020-09-18 Herakles Dispositif de delivrance d'un materiau pressurise
IL247008A0 (en) * 2016-07-28 2016-12-29 Alroee Yariv Fire extinguisher
US10912963B2 (en) * 2017-12-01 2021-02-09 International Business Machines Corporation Automatically generating fire-fighting foams to combat Li-ion battery failures
US10722741B2 (en) * 2017-12-01 2020-07-28 International Business Machines Corporation Automatically generating fire-fighting foams to combat Li-ion battery failures
US11241599B2 (en) * 2018-05-09 2022-02-08 William A. Enk Fire suppression system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US767902A (en) * 1903-07-23 1904-08-16 Mark Addison Libbey Detonating-alarm fire-extinguisher.
US1297172A (en) * 1917-09-05 1919-03-11 John W Hughes Self-operating fire-extinguisher.
US2712881A (en) * 1951-05-23 1955-07-12 Graviner Manufacturing Co Stoppering and opening devices for fluid containers
FR1143458A (fr) * 1953-01-27 1957-10-01 Tecalemit Emporte-pièce hydraulique et appareil extincteur le comportant
US2795202A (en) * 1954-08-18 1957-06-11 Hook Christopher Hydrofoil craft
US3833063A (en) * 1972-02-15 1974-09-03 Pyro Control Inc Nonfragmenting pyrotechnic fire extinguisher
FR2565495B1 (fr) * 1984-06-08 1989-02-17 Abg Semca Extincteur a decharge rapide

Also Published As

Publication number Publication date
US4760886A (en) 1988-08-02
ATE53948T1 (de) 1990-07-15
CA1314026C (fr) 1993-03-02
ES2015587B3 (es) 1990-09-01
EP0245143A1 (fr) 1987-11-11
DE3763288D1 (de) 1990-07-26
FR2597757B1 (fr) 1990-10-05
FR2597757A1 (fr) 1987-10-30

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