EP3658242B1 - Lance à incendie d'origine électrique pour lutter contre les feux d'objets chargés électriquement - Google Patents

Lance à incendie d'origine électrique pour lutter contre les feux d'objets chargés électriquement Download PDF

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Publication number
EP3658242B1
EP3658242B1 EP18755139.5A EP18755139A EP3658242B1 EP 3658242 B1 EP3658242 B1 EP 3658242B1 EP 18755139 A EP18755139 A EP 18755139A EP 3658242 B1 EP3658242 B1 EP 3658242B1
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EP
European Patent Office
Prior art keywords
extinguishing
designed
tubular
lance
handle part
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.)
Active
Application number
EP18755139.5A
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German (de)
English (en)
Other versions
EP3658242C0 (fr
EP3658242A1 (fr
Inventor
Albrecht RESCHKE
Thomas Wille
Matthias Petermann
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.)
Murer-Feuerschutz GmbH
Volkswagen AG
Original Assignee
Murer Feuerschutz GmbH
Volkswagen AG
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.)
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Publication date
Application filed by Murer Feuerschutz GmbH, Volkswagen AG filed Critical Murer Feuerschutz GmbH
Publication of EP3658242A1 publication Critical patent/EP3658242A1/fr
Application granted granted Critical
Publication of EP3658242C0 publication Critical patent/EP3658242C0/fr
Publication of EP3658242B1 publication Critical patent/EP3658242B1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/22—Nozzles specially adapted for fire-extinguishing specially adapted for piercing walls, heaped materials, or the like

Definitions

  • the invention relates to an extinguishing lance designed to extinguish burning objects, the extinguishing lance having a holding section with a grip part for an operator, a feed designed for the supply of extinguishing agent with a coupling device designed to connect a pressure hose for liquid extinguishing agent, and a device attached to the holding section and the Coupling device has a tubular extinguishing section which is designed in such a way that extinguishing agent can be introduced under pressure into a burning object from its free end, the handle part of the holding section also being designed to be electrically insulating for electrical voltages U ⁇ 100V, the tubular extinguishing section at its free end is designed to taper geometrically to a point, and wherein the tubular extinguishing section has at its free end a narrowed clear flow cross section for the extinguishing agent passed through under pressure, which is designed in such a way that extinguishing agent can be passed through under pressure.
  • Such an extinguishing lance is from the U.S. 2002/019307 A1 known.
  • a particular problem with a fire in such an electric vehicle is that when extinguishing it, there is not only considerable danger from the fire and the fire itself and possible self-igniting elements such as lithium-ion batteries, but there are also additional dangers from spreading high voltages or high currents due to the High-performance electrics or accumulators installed in the vehicle must be checked. It is therefore important to prevent this effectively.
  • the US 2003/0159837 A1 shows a "multi-purpose water hammer" with a pointed nozzle intended to penetrate an object to be extinguished when used.
  • the erasing head is placed on the tubular erasing section at an angle of 90°.
  • no electrical insulation of the extinguishing lance is provided or indicated here either.
  • people probably didn't think of vehicles with electric drives as they do today.
  • the U.S. 2015/075820A1 discloses a portable and extendable extinguishing agent delivery system for use in piercing materials to attack hidden fire sources.
  • the system features a tube with a nozzle for transporting and dispensing extinguishing agent, handles for holding the tube and a hammer cap as a base for using a sledgehammer.
  • the spray gun for forced penetration into an object to be extinguished and the introduction of extinguishing water.
  • the spray gun includes a tube with a pointed nozzle for transporting and dispensing extinguishing agent.
  • an extinguishing lance is required in particular, which is not only designed for actual extinguishing, but can withstand thermal as well as mechanical and, in particular, electrical hazards.
  • the object of the present invention is to provide an extinguishing lance with the simplest possible technical means, inexpensively and with which, when extinguishing burning electrical equipment with high electrical voltage, in particular vehicles with electric drive, both minimum requirements for protection against thermal hazards and to protect against mechanical overloads and to protect against electrical hazards.
  • greater durability and resistance to acids should be ensured for the free end of the tubular extinguishing section, which tapers to a point.
  • the extinguishing lance according to the invention is the first of its kind that is specifically suitable for extinguishing lithium-ion batteries installed in electric vehicles. This means that the first effective extinguishing device in the world is now available to fire brigades for such applications.
  • the handle part of the holding section has a voltage-insulating coating with a layer thickness d ⁇ 2 mm, also for electrical voltages U ⁇ 1000V, the handle part itself can already ensure adequate protection of the operator against electrical voltages.
  • the lance can be inserted into the battery of a burning electric vehicle, for example. Due to the tip in the foremost area, material in the way, such as a battery wall, can easily be punctured. Such a high-strength but pointed nozzle avoids or at least minimizes wear while facilitating penetration into the surface of the object to be extinguished.
  • the flow-constricted nozzle(s) at the tip of the lance also ensure that sufficient extinguishing success can be achieved quickly and efficiently and in particular with a relatively small amount of extinguishing water.
  • the voltage-isolating coating of the handle part already satisfies at least the minimum requirements of European standards 60903 and/or 659 for insulating protective gloves for working under electrical voltage. It is also advantageous if the stress-isolating coating of the handle part is made of heat-insulating, flame-resistant material - for example using aramid and/or para-aramid - and also satisfies the minimum requirements of European Standard 407 for protective gloves against thermal risks.
  • Embodiments are preferred in which the stress-isolating coating of the handle part is made of polyvinyl chloride is constructed. This ensures a longer service life for the coating. Signs of aging are minimized.
  • the holding section is constructed from austenitic, acid-resistant 18/10 Cr-Ni steel under the stress-isolating coating of the handle part. This is more resistant and particularly resistant to battery acid.
  • the handle part of the holding section has at least one loop handle with hand protection. This enables safe operability and good localization of the battery. Furthermore, the loop handle serves as protection against unwanted deformation of the lance when hitting the object to be extinguished.
  • the embodiments of this class can be further improved by further developments in which the handle part of the holding section has two loop handles for operating the electric extinguishing lance with both hands. This ensures safe operability and localization in the object to be infiltrated.
  • an actuating valve for admitting or stopping an inflow of extinguishing agent into the tubular extinguishing section is provided on the extinguishing agent supply and a trigger device for manual activation of the actuating valve is provided on the holding section, preferably on the handle part.
  • the tubular extinguishing section is made of austenitic, acid-resistant 18/10 Cr-Ni steel. This contributes to increased mechanical and chemical resistance and thus to a longer service life of the tip.
  • E-extinguishing lance in which the free end of the tubular extinguishing section is designed to taper conically. This enables a particularly straight and light impact into the object.
  • a class of embodiments in which the tapering free end of the tubular quenching section is designed to be exchangeable is particularly preferred.
  • the lance can also be used for other types of extinguishing agent.
  • the tip can be quickly and easily exchanged for another when it wears out.
  • replaceable tip(s) is (are) provided with a screw thread or perhaps also a bayonet lock, with two holding points for wrenches preferably being present for easy disassembly.
  • the lance can be quickly made ready for use again when it is worn out, and the tip can also be quickly replaced when needed.
  • At least one nozzle for the discharge of pressurized liquid extinguishing agent is integrated into the free end of the tubular extinguishing section, which tapers to a point, with the nozzle preferably being shaped in such a way that extinguishing agent can be optimally injected into squirts and/or spreads onto the surface of the burning object. In this way, only comparatively small amounts of extinguishing agent are required.
  • the nozzle has an inside diameter of between 30mm and 40mm, preferably about 33.7mm, a length of between 25mm and 50mm, preferably about 30mm, and a width of between 15mm and 25mm, preferably 21 ,3mm.
  • these special dimensions also have advantages in terms of production technology.
  • embodiments of the extinguishing lance according to the invention have proven themselves in which the holding section at the operator-side end has a large-area, geometrically designed for a straight hit by an operator, centrally attached impact plate in an extension to the tubular extinguishing section, the operator-side end surface of which has a larger outer diameter than the handle part of the Holding section, wherein the large-area impact plate for producing a surface body contact with an operator is designed, in particular the large-scale impact plate is made of solid material and is preferably designed to be interchangeable.
  • the large-area impact plate on the operator-side end of the holding section is used to create a planar body contact with an operator.
  • a centrally attached impact plate of this type ensures, in particular, that the lance is struck as straight as possible in order to prevent the lance from bending.
  • a spacer section to the tubular quenching section can also be provided adjoining the impact plate.
  • Embodiments are also advantageous which are characterized in that the extinguishing lance, in particular the impact plate, is of divisible construction.
  • the extinguishing lance according to the invention can thus be used particularly flexibly, for example when a vehicle catches fire in your own garage or in a multi-storey car park. In this context, cases of self-ignition of lithium-ion batteries, which led to fires in buildings and considerable damage, have gone through the press.
  • the extinguishing lance is designed to be extendable with respect to its longitudinal axis, with the impact plate of the holding section being arranged at the operator-side end at a variable distance from the tubular extinguishing section, which is preferably designed to be extendable. This also means greater flexibility in use reached. This configuration makes the extinguishing lance particularly suitable for use in trucks and other large vehicles.
  • the drawing shows an embodiment of the electrically insulating e-extinguishing lance 10 according to the invention for extinguishing burning objects under electrical voltage.
  • the electric extinguishing lance 10 according to the invention also has a holding section with a grip part 11 for an operator, an extinguishing agent feed with a coupling device 12 for connecting a pressure hose for liquid extinguishing agent, and one attached to the holding section and, if necessary the coupling device 12 subsequent tubular extinguishing section 13 , from the free end of which extinguishing agent can be applied under pressure into a burning object.
  • the e-extinguishing lance 10 is characterized in that the handle part 11 of the holding section is designed to be electrically insulating for electrical voltages U ⁇ 500V; that the tubular extinguishing section 13 is made of a material which has such a high tensile strength R m that it withstands a mechanical stress ⁇ ⁇ 500 N/mm 2 and which has a melting temperature t s >650°C; that the tubular quenching section 13 is designed to taper geometrically at its free end; and that a holding section at the end on the operator side has a large-area striking plate 14 in extension to the tubular quenching section 13 .
  • the handle part 11 of the holding section can have a stress-isolating coating, preferably made of polyvinyl chloride, with a layer thickness d ⁇ 2 mm, which can also be designed for electrical voltages U ⁇ 200V, in particular U ⁇ 500V, preferably U ⁇ 1000V.
  • the holding section under the stress-isolating coating of the handle part 11 is generally made of metal, preferably of VA steel, in particular of austenitic, acid-resistant 18/10 Cr-Ni steel.
  • the tubular quenching section 13 is also made of metal, preferably stainless steel, in particular austenitic, acid-resistant 18/10 Cr-Ni steel, as is the pointed free end of the tubular quenching section 13, which is preferably additionally hardened.
  • the handle part 11 of the holding section has two loop handles 11', 11'' for operating the E-extinguishing lance 10 with both hands.
  • the tapering free end of the tubular extinguishing section 13 is preferably designed as a conically tapering, preferably exchangeable tip 15 , with different exchangeable tips 15, preferably with different geometries, diameters and in particular made of different materials, being available for different purposes.
  • exchangeable tips 15 can be provided with a screw thread (not specifically shown in the drawing) or a bayonet catch, with two holding points for wrenches preferably being present for easy assembly and disassembly.
  • At least one, preferably three, nozzles distributed uniformly around the longitudinal axis of the tubular extinguishing section 13 for the discharge of pressurized liquid extinguishing agent are integrated into the free end of the tubular extinguishing section 13, which tapers to a point, with the nozzles preferably being shaped in such a way that it optimally injects the extinguishing agent into the burning object and/or distributes it on its surface.
  • These nozzles are also not specifically shown in the drawing.
  • the electric extinguishing lance 10 can have an actuating valve (not shown) on the extinguishing agent feed for letting in or stopping an inflow of extinguishing agent into the tubular extinguishing section 13 and on the holding section, preferably on the handle part 11, a trigger device for manually actuating this actuating valve.
  • an actuating valve (not shown) on the extinguishing agent feed for letting in or stopping an inflow of extinguishing agent into the tubular extinguishing section 13 and on the holding section, preferably on the handle part 11, a trigger device for manually actuating this actuating valve.
  • FIGS. 2a and 2b show in enlarged detail the area around the holding section with handle part 11, extinguishing agent supply with the coupling device 12 for connecting a pressure hose for liquid extinguishing agent, as well as the tubular extinguishing section 13 adjoining the holding section and the coupling device 12.
  • FIGS. 3a and 3b show in enlarged detail a percussion mandrel 16 which can be attached to the percussion plate 14 by the user. It can be attached, for example, by screwing or plugging it on, for example by means of a bayonet catch.
  • FIGS. 4a to 4d finally show in enlarged detail a replaceable tip 15 with nozzles 17, which are distributed around the longitudinal axis.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Nozzles (AREA)

Claims (14)

  1. Lance à incendie (10) en forme de lance, configurée pour éteindre des objets en feu, la lance à incendie (10) présentant une section de maintien comportant une partie de préhension (11) pour un utilisateur, une alimentation conçue pour l'alimentation en agent d'extinction, l'alimentation comportant un dispositif d'accouplement (12) configuré pour le raccordement d'un flexible sous pression pour un agent d'extinction liquide, ainsi qu'une section d'extinction tubulaire (13) raccordée à la section de maintien et au dispositif d'accouplement (12), laquelle section d'extinction tubulaire est conçue de telle sorte qu'à partir de son extrémité libre, l'agent d'extinction peut être introduit sous pression dans un objet en feu, la partie de préhension (11) de la section de maintien étant réalisée de manière électriquement isolante, y compris pour des tensions électriques U ≥ 100 V, la section d'extinction tubulaire (13) étant conçue géométriquement de manière effilée au niveau de son extrémité libre et la section d'extinction tubulaire (13) présentant, à son extrémité libre, une section transversale intérieure d'écoulement rétrécie qui est conçue de telle sorte que l'agent d'extinction sous pression peut être guidé à travers celle-ci,
    caractérisée en ce que la lance à incendie (10) est conçue de telle sorte que, lors de son utilisation, elle peut être introduite dans la batterie d'un véhicule électrique en feu sans mettre en danger l'utilisateur,
    dans la mesure où la partie de préhension (11) de la section de maintien est réalisée de manière électriquement isolante pour des tensions électriques U ≥ 500 V, la partie de préhension (11) de la section de maintien présentant un revêtement d'isolation de tension, lequel est réalisé de manière électriquement isolante, y compris pour des tensions électriques U ≥ 1000 V, et présente une épaisseur de couche d ≥ 2 mm ;
    dans la mesure où la section d'extinction tubulaire (13) est fabriquée en un matériau qui présente une résistance à la traction Rm si élevée qu'elle résiste à une contrainte mécanique σ ≥ 500 N/mm2, et qui présente une température de fusion ts ≥ 650 °C ;
    dans la mesure où la section de maintien sous le revêtement d'isolation de tension de la partie de préhension (11) est fabriquée en acier inoxydable et la section d'extinction tubulaire (13) est fabriquée en acier spécial,
    et dans la mesure où l'extrémité libre effilée de la section d'extinction tubulaire (13) est fabriquée en acier Cr-Ni 18/10 austénitique et est en outre trempée.
  2. Lance à incendie selon la revendication 1, caractérisée en ce que le revêtement d'isolation de tension de la partie de préhension (11) est en polychlorure de vinyle.
  3. Lance à incendie selon l'une des revendications 1 ou 2,
    caractérisée en ce que la section de maintien sous le revêtement d'isolation de tension de la partie de préhension (11) est en acier Cr-Ni 18/10 austénitique résistant aux acides.
  4. Lance à incendie selon l'une des revendications précédentes,
    caractérisée en ce que la partie de préhension (11) de la section de maintien présente au moins une poignée (11', 11") comportant un protège-main.
  5. Lance à incendie selon l'une des revendications précédentes,
    caractérisée en ce qu'une soupape d'actionnement destinée à laisser entrer ou à arrêter un flux d'agent d'extinction dans la section d'extinction tubulaire (13) est prévue au niveau de l'alimentation en agent d'extinction, et un dispositif de déclenchement destiné à commander manuellement la soupape d'actionnement est prévu au niveau de la section de maintien, de préférence au niveau de la partie de préhension (11).
  6. Lance à incendie selon l'une des revendications précédentes,
    caractérisée en ce que la section d'extinction tubulaire (13) est fabriquée en acier Cr-Ni 18/10 austénitique résistant aux acides.
  7. Lance à incendie selon l'une des revendications précédentes,
    caractérisée en ce que l'extrémité libre de la section d'extinction tubulaire (13) est conçue de façon conique.
  8. Lance à incendie selon l'une des revendications précédentes,
    caractérisée en ce que l'extrémité libre effilée de la section d'extinction tubulaire (13) est conçue de manière remplaçable, différentes pointes (15) remplaçables, de préférence pourvues de géométries, diamètres et en particulier matériaux différents, étant en particulier présentes.
  9. Lance à incendie selon la revendication 8, caractérisée en ce que la/les pointe(s) remplaçable(s) (15) est/sont pourvue(s) d'un filetage à vis ou d'un raccord à baïonnette, et en ce que de préférence deux points de maintien pour tournevis, permettant un démontage aisé, sont présents.
  10. Lance à incendie selon l'une des revendications précédentes,
    caractérisée en ce qu'au moins une buse (17) pour la sortie d'agent d'extension liquide sous pression est intégrée dans l'extrémité libre effilée de la section d'extinction tubulaire (13), la buse (17) étant de préférence formée de telle sorte qu'elle injecte l'agent d'extinction de manière optimale dans l'objet en feu et/ou le répartit de manière optimale sur sa surface.
  11. Lance à incendie selon la revendication 10, caractérisée en ce que la buse (17) présente un diamètre interne compris entre 30 et 40 mm, de préférence d'environ 33,7 mm, une longueur comprise entre 25 et 50 mm, de préférence d'environ 30 mm, ainsi qu'une largeur comprise entre 15 et 25 mm, de préférence de 21,3 mm, et en ce que de préférence trois buses (17) agencées de manière régulièrement répartie autour de l'axe longitudinal de la section d'extinction tubulaire (13) sont prévues.
  12. Lance à incendie selon l'une des revendications précédentes,
    caractérisée en ce que la section de maintien présente, au niveau de l'extrémité côté utilisateur, une plaque de frappe (14) de grande surface, conçue géométriquement pour recevoir des coups droits provenant d'un utilisateur, disposée de manière centrale dans le prolongement de la section d'extinction tubulaire (13), dont la surface d'extrémité côté utilisateur présente un diamètre externe plus grand que celui de la partie de préhension (11) de la section de maintien, la plaque de frappe (14) de grande surface étant conçue pour réaliser un contact corporel en surface avec un utilisateur, la plaque de frappe (14) de grande surface étant fabriquée en particulier en matériau plein et de préférence conçue de manière remplaçable.
  13. Lance à incendie selon l'une des revendications précédentes,
    caractérisée en ce que la lance à incendie (10), en particulier la plaque de frappe (14), est construite de manière séparable.
  14. Lance à incendie selon l'une des revendications précédentes,
    caractérisée en ce que la lance à incendie (10) est réalisée de manière à pouvoir être allongée par rapport à son axe longitudinal, la plaque de frappe (14) de la section de maintien étant en particulier agencée, au niveau de l'extrémité côté utilisateur, avec une distance variable par rapport à la section d'extinction tubulaire (13), laquelle distance est de préférence conçue de manière à pouvoir être allongée.
EP18755139.5A 2017-07-24 2018-07-20 Lance à incendie d'origine électrique pour lutter contre les feux d'objets chargés électriquement Active EP3658242B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017104411.4U DE202017104411U1 (de) 2017-07-24 2017-07-24 E-Löschlanze zur Brandbekämpfung bei elektrisch geladenen Objekten
PCT/EP2018/069728 WO2019020507A1 (fr) 2017-07-24 2018-07-20 Lance à incendie d'origine électrique pour lutter contre les feux d'objets chargés électriquement

Publications (3)

Publication Number Publication Date
EP3658242A1 EP3658242A1 (fr) 2020-06-03
EP3658242C0 EP3658242C0 (fr) 2023-08-30
EP3658242B1 true EP3658242B1 (fr) 2023-08-30

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EP18755139.5A Active EP3658242B1 (fr) 2017-07-24 2018-07-20 Lance à incendie d'origine électrique pour lutter contre les feux d'objets chargés électriquement

Country Status (7)

Country Link
EP (1) EP3658242B1 (fr)
CN (1) CN110958903B (fr)
DE (1) DE202017104411U1 (fr)
ES (1) ES2958591T3 (fr)
HU (1) HUE063730T2 (fr)
PL (1) PL3658242T3 (fr)
WO (1) WO2019020507A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE202020102574U1 (de) 2020-05-07 2020-05-28 Murer-Feuerschutz Gmbh Verbesserte E-Löschlanze
DE202021102269U1 (de) 2021-04-28 2021-05-14 Murer-Feuerschutz Gmbh E-Löschlanze mit Positionshalter zur Brandbekämpfung bei elektrisch geladenen Objekten

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Also Published As

Publication number Publication date
HUE063730T2 (hu) 2024-01-28
CN110958903B (zh) 2021-08-24
ES2958591T3 (es) 2024-02-12
WO2019020507A1 (fr) 2019-01-31
CN110958903A (zh) 2020-04-03
EP3658242C0 (fr) 2023-08-30
EP3658242A1 (fr) 2020-06-03
PL3658242T3 (pl) 2024-04-08
DE202017104411U1 (de) 2017-08-08

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