EP4146357B1 - Lance d'extinction électronique améliorée - Google Patents

Lance d'extinction électronique améliorée Download PDF

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Publication number
EP4146357B1
EP4146357B1 EP21724650.3A EP21724650A EP4146357B1 EP 4146357 B1 EP4146357 B1 EP 4146357B1 EP 21724650 A EP21724650 A EP 21724650A EP 4146357 B1 EP4146357 B1 EP 4146357B1
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EP
European Patent Office
Prior art keywords
extinguishing
tubular
outer diameter
free end
section
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
EP21724650.3A
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German (de)
English (en)
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EP4146357A1 (fr
EP4146357C0 (fr
Inventor
Matthias Petermann
Albrecht RESCHKE
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
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Application filed by Murer Feuerschutz GmbH, Volkswagen AG filed Critical Murer Feuerschutz GmbH
Publication of EP4146357A1 publication Critical patent/EP4146357A1/fr
Application granted granted Critical
Publication of EP4146357C0 publication Critical patent/EP4146357C0/fr
Publication of EP4146357B1 publication Critical patent/EP4146357B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • 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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/28—Accessories for delivery devices, e.g. supports
    • 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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles

Definitions

  • the invention relates to an extinguishing lance for fighting fires in electrically charged objects, such as vehicles equipped with electric motors, wherein the extinguishing lance has a holding section with a handle for an operator, an extinguishing agent supply with a coupling device for connecting a pressure hose for liquid extinguishing agent, and a tubular extinguishing section connected to the holding section and optionally the coupling device, from the free end of which extinguishing agent can be introduced into a burning object under pressure, wherein the handle of the holding section has a voltage-insulating coating which is also designed to be electrically insulating for electrical voltages U between 500V and 1000V, wherein the tubular extinguishing section 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 ts ⁇ 650°C, wherein the tubular extinguishing section is geometrically tapered at
  • Such an electric fire extinguishing lance is known from the DE 20 2017 104 411 U1 as well as from the WO 2019/020507 A1 .
  • the US 2003/0159837 A1 shows a "multi-purpose water hammer" with a tapered nozzle that is intended to penetrate an object to be extinguished when used.
  • the extinguishing head is placed at an angle of 90° on the tubular extinguishing section.
  • the impact on the outer shell of the vehicle would have to be very close to the battery to be extinguished in order to achieve any effective effect.
  • Lithium hexafluorophosphate (LiPF), hydrofluoric acid (HF), phosphoryl fluoride (POF) and phosphoric acid are released primarily as a result of the decomposition of the conductive salt in the electrolyte.
  • LiPF lithium hexafluorophosphate
  • HF hydrofluoric acid
  • POF phosphoryl fluoride
  • phosphoric acid are released primarily as a result of the decomposition of the conductive salt in the electrolyte.
  • the object of the present invention is to provide an electric fire extinguishing lance of the type defined at the outset using the simplest possible technical means in a simple and cost-effective manner, with which the minimum requirements for protection against thermal hazards as well as for protection against mechanical overloads and for protection against electrical hazards are reliably met.
  • this task - which in practice is life-saving and life-saving for the operator - is solved in a surprisingly simple and effective manner by an electric extinguishing lance of the type defined at the beginning, which is however suitable for really safe work under electrical voltage, in that the tubular extinguishing section has, at least in the area of the holding section and also outside the handle part, a voltage-insulating coating which is designed to be electrically insulating for electrical voltages U ⁇ 500V.
  • the present invention provides an electric fire extinguishing lance that completely solves the above-mentioned inventive problem.
  • the electric fire extinguishing lance according to the invention is also specifically designed for extinguishing lithium-ion batteries installed in electric vehicles. This means that fire brigades now have an effective and completely safe fire extinguisher for use in applications involving burning objects with high voltages.
  • a large-surface impact plate at the operator-side end of the holding section can be provided to establish surface-level physical contact with an operator.
  • a centrally mounted impact plate of this type ensures that the impact is as straight as possible in order to prevent the electric extinguishing lance from bending.
  • a spacer section to the tubular extinguishing section can also be provided adjacent to the impact plate.
  • the electric extinguishing lance can be inserted into the battery of a burning electric vehicle, for example. Due to the tip in the front area, material that is in the way, such as a battery wall, can be easily penetrated. Such a high-strength but pointed nozzle prevents or at least minimizes wear and tear, making it easier to penetrate the surface of the object to be extinguished.
  • Flow-restricted 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.
  • a particularly advantageous class of embodiments of the electric extinguishing lance according to the invention is characterized in that the voltage-insulating coating of the tubular extinguishing section has a layer thickness d ⁇ 2mm, in particular between 2mm and 5mm, at least in the area of the holding section with handle part, and that the voltage-insulating coating of the handle part of the holding section and also of the extinguishing section is designed to be electrically insulating for electrical voltages U up to 1000V and above.
  • the handle part itself can therefore now ensure sufficient protection of the operator against electrical voltages in the area of the holding section in conjunction with the tubular extinguishing section.
  • Particularly preferred are developments of this class of embodiments which are characterized in that the voltage-insulating coating of the handle part and also of the extinguishing section is also designed for electrical voltages U ⁇ 1000V.
  • the voltage-insulating coating of the handle part as well as the extinguishing section already meets at least the minimum requirements of the European Standards 60903 and/or 659 for insulating protective gloves for working under electrical voltage are sufficient. It is also advantageous if the voltage-insulating coating of the handle part and the extinguishing section is made of heat-insulating, flame-resistant material - for example using aramid and/or para-aramid - and also meets the minimum requirements of European Standard 407 for protective gloves against thermal risks.
  • the voltage-insulating coating of the handle and the extinguishing section is made of polyvinyl chloride. This ensures a longer service life for the coating. Signs of aging are minimized.
  • the holding section under the stress-insulating coating of the handle part and preferably also the tubular extinguishing section and its tip, are made of metal, preferably of VA steel, in particular of austenitic, acid-resistant 18/10 Cr-Ni steel.
  • the tip of the tubular extinguishing section should be hardened. These materials are mechanically more resistant and chemically particularly resistant to battery acid, for example in an electric vehicle that is to be extinguished. This, as well as the above-mentioned preferred processing variant of the tip, contribute to increased mechanical and chemical resistance and thus to longer durability.
  • the handle part of the holding section has at least one bow handle with hand protection. This enables safe operation and good localization of the battery. Furthermore, the bow handle serves as protection against unwanted deformation of the lance when it is struck into 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 handles for two-handed operation of the electric fire extinguishing lance. This ensures safe operation and localization in the object to be extinguished, into which the fire is to be penetrated.
  • Further advantageous embodiments are characterized by the fact that an actuating valve is provided on the extinguishing agent supply for letting in or stopping the flow of extinguishing agent into the tubular extinguishing section and a trigger device for manually controlling the actuating valve is provided on the holding section, preferably on the handle part.
  • the free end of the tubular extinguishing section is tapered. This enables a particularly straight and easy impact into the object to be extinguished.
  • the tip of the tubular extinguishing section has a maximum outer diameter that is between 1/3 and 3/4, preferably between 1/2 and 2/3, of the outer diameter of the tubular extinguishing section.
  • the battery is installed almost on the entire base plate, but only about 4-5cm thick.
  • the electric extinguishing lance is inserted into the battery through the base plate for extinguishing.
  • the lance tip With the previously known lance tip, however, there is a risk (and according to information from the factory fire departments of well-known vehicle manufacturers, this has already happened) that the lance tip will penetrate the battery. and the extinguishing agent is then not distributed in the burning battery in the correct way.
  • the depth of impact is now limited by the new design of the tip proposed here in such a way that a clean penetration of the battery box is not possible or only possible with a great deal of additional force. Due to the now larger maximum external diameter of the tubular extinguishing section adjacent to the tip compared to the blunt conical end of the tip, there is noticeable and considerable mechanical resistance when the electric extinguishing lance is struck as soon as the tip has penetrated the battery.
  • a transition section is arranged between the conical, tapered free end and the adjoining tubular extinguishing section, which transition section is geometrically designed in such a way that it transfers the maximum outer diameter of the conical free end with a cone angle between 55° and 85°, preferably about 70°, to the full outer diameter of the tubular extinguishing section.
  • This transition section ensures a noticeable increase in mechanical resistance when the extinguishing lance is struck into the object to be extinguished.
  • a cylindrical intermediate section with an axial length L ZA between 30mm and 80mm, preferably about 50mm, is arranged between the maximum outer diameter of the conical free end and the transition section, the diameter of which corresponds to the maximum outer diameter of the conical free end and which transfers the conical free end to the beginning of the transition section at its minimum outer diameter.
  • the cylindrical intermediate section initially ensures a constant mechanical resistance when the fire extinguishing lance hits the object to be extinguished, before the transition section described above slows down the further advance of the fire extinguishing lance tip.
  • a class of embodiments in which the tapered free end of the tubular extinguishing section, and possibly also the transition section, the cylindrical intermediate section and the cylindrical connecting section, is designed as an exchangeable tip relative to the tubular extinguishing section is particularly preferred.
  • the electric extinguishing lance can also be used for other extinguishing agent variants.
  • the tip can be quickly and easily replaced with another one if it becomes worn. Since a fire in a lithium-ion battery in an electric vehicle, for example, can cause temperatures of up to 1000°C, the increased wear on the tip may make it necessary to replace it.
  • replaceable tip(s) is/are provided with a screw thread or a bayonet lock for detachable attachment to the tubular extinguishing section, with two holding points for wrenches for easy disassembly being provided. This means that the lance can be quickly made ready for use again if it becomes worn and the tip can also be quickly replaced in the event of an emergency.
  • connection section and, if applicable, also the transition section have a chamfer as an attachment surface for a wrench for easy assembly and disassembly of the replaceable tip.
  • At least one nozzle for the discharge of pressurized liquid fire extinguishing agent is integrated into the tapered free end of the tubular fire extinguishing section, wherein the nozzle is preferably shaped in such a way that it optimally injects fire extinguishing agent into the burning object and/or distributes it over its surface. In this way, only comparatively small amounts of fire extinguishing agent are required.
  • the nozzle has a clear diameter of between 30 mm and 40 mm, preferably about 33.7 mm, a length of between 25 mm and 50 mm, preferably about 30 mm, and a width of between 15 mm and 25 mm, preferably 21.3 mm.
  • These special dimensions also have advantages in terms of production technology.
  • a class of embodiments of the extinguishing lance according to the invention has proven particularly useful in which the holding section at the end facing the operator has an impact section in extension of the tubular extinguishing section, the end surface of which is designed as a large-area impact plate and has a larger outer diameter than the tubular extinguishing section, preferably between 1.5 times and 2.5 times the outer diameter of the tubular extinguishing section, in particular an outer diameter that is at least twice as large.
  • the impact section is preferably made of solid material, in particular of metal, and is particularly preferably replaceable, in particular in the form of a striking mandrel that can be plugged or screwed onto the handle part in extension of the longitudinal axis of the tubular extinguishing section. This provides a sufficiently large area for introducing mechanical force in the direction of the longitudinal axis of the extinguishing lance, so that the lance can be driven quickly and precisely into the object to be extinguished.
  • the striking plate has a cylindrical shape with at least one, preferably two parallel, opposite bevel surfaces.
  • the electric fire extinguishing lance according to the invention is designed with the electrical insulation described above in the handle area.
  • a conductive connection to earth potential should be established.
  • a first earthing device for establishing an electrically conductive connection with the voltage potential of the earth can be provided on the impact section, preferably on the part of the impact section following the large-area impact plate in the axial direction of the tubular extinguishing section, which first earthing device comprises in particular an earthing screw and an earthing cable.
  • the coupling device for connecting a pressure hose for liquid extinguishing agent has a second earthing device for establishing an electrically conductive connection with the voltage potential of the earth, which in particular comprises an earthing nut and a second earthing cable.
  • extinguishing lance in particular the impact section
  • the extinguishing lance according to the invention can be used particularly flexibly, for example when a vehicle catches fire in your own garage or in a parking garage.
  • cases of spontaneous combustion of lithium-ion batteries have been reported, which have led to fires in buildings and considerable damage.
  • the extinguishing lance is designed to be extendable along its longitudinal axis, with the impact plate of the impact section at the end facing the operator being arranged at a variable distance from the tubular extinguishing section. This design makes the extinguishing lance particularly suitable for use with trucks and other large vehicles.
  • the tubular extinguishing section is also designed to be extendable, in particular by means of one or more tubular extension pieces which have the same outer diameter as the tubular extinguishing section. This also achieves greater flexibility in use.
  • 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 handle 11 for an operator, an extinguishing agent supply with a coupling device 12 for connecting a pressure hose for liquid extinguishing agent, and a tubular extinguishing section 13 connected to the holding section and optionally the coupling device 12 , from the free end of which extinguishing agent can be introduced into a burning object under pressure.
  • the handle 11 of the holding section has a voltage-insulating coating 11a , which is designed to be electrically insulating even for electrical voltages U ⁇ 500V, the tubular extinguishing section 13 being geometrically tapered at its free end and having a narrowed clear flow cross-section for the extinguishing agent passed through under pressure.
  • the electric extinguishing lance 10 is characterized in that the tubular extinguishing section 13 now also has, at least in the region of the holding section with handle part 11, a voltage-insulating coating 13a which is designed to be electrically insulating for electrical voltages U ⁇ 500V.
  • this voltage-insulating coating 13a of the tubular extinguishing section 13 can have a layer thickness d ⁇ 2mm, in particular between 2mm and 5mm, at least in the region of the holding section with handle part 11, and the voltage-insulating coating 11a of the handle part 11 of the holding section as well as the coating 13a of the extinguishing section 13 can even be electrically insulating for electrical voltages U up to 1000V and above.
  • tubular extinguishing section 13 can be made of VA steel, in particular of austenitic, acid-resistant 18/10 Cr-Ni steel, and the stress-insulating coating 13a of the tubular extinguishing section 13 can be made of polyvinyl chloride.
  • the handle part 11 of the holding section has two handles 11', 11" for two-handed operation of the electric fire extinguishing lance 10.
  • the electric extinguishing lance 10 can have an actuating valve (not shown) on the extinguishing agent supply for admitting or stopping an extinguishing agent flow into the tubular extinguishing section 13 and a trigger device on the holding section, preferably on the handle part 11, for manually controlling this actuating valve.
  • an actuating valve (not shown) on the extinguishing agent supply for admitting or stopping an extinguishing agent flow into the tubular extinguishing section 13 and a trigger device on the holding section, preferably on the handle part 11, for manually controlling this actuating valve.
  • the embodiment of the electric extinguishing lance 10 according to the invention shown has a preferably replaceable impact section 14 at the end facing the operator, adjacent to the holding section, in extension to the tubular extinguishing section 13, which serves to introduce impact force in the direction of the longitudinal axis of the electric extinguishing lance 10 in order to drive it into an object to be extinguished.
  • the free end of the electric extinguishing lance 10 is designed as a preferably also replaceable and specially hardened tip 15 .
  • FIGS. 2a to 2c 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.
  • the coupling device 12 has a grounding device for establishing an electrically conductive connection with the electrical potential of the earth, which in the embodiment shown comprises a grounding nut 12′′′ and a grounding cable (not specifically shown in the drawing).
  • a welded bushing 13' is provided in the axial connection to the tubular extinguishing section 13, which enables an extension of the electric extinguishing lance 10 according to the invention, as shown below with reference to the Figures 5a-f explained in more detail.
  • FIGS. 3a to 3c show in enlarged detail a mandrel 16 that can be attached or screwed onto the holding section of the electric extinguishing lance 10, more precisely onto the handle part 11 in the extension of the longitudinal axis of the tubular extinguishing section 13, which here forms the striking section 14.
  • Its end surface on the operator side is designed as a large-area striking plate 14' and has a larger outer diameter than the tubular extinguishing section 13, preferably between 1.5 times and 2.5 times the outer diameter of the tubular extinguishing section 13.
  • the mandrel 16 is preferably made of solid material, in particular of metal.
  • the striking plate 14' has a cylindrical end with a large striking surface on the operator side.
  • two parallel, opposite beveled surfaces 14" are provided here, which can serve as attachment surfaces for tools for easier assembly and disassembly of the striking mandrel 16 on the handle part 11.
  • a grounding device for establishing an electrically conductive connection with the voltage potential of the earth is provided, which here comprises a grounding screw 14′′′ and a grounding cable (not specifically shown in the drawing).
  • the striking pin 16 can be attached to the handle part 11, for example, by screwing it on or by plugging it on, for example by means of a bayonet lock.
  • FIGS. 4a to 4e show in enlarged detail the tapered free end of the electric extinguishing lance 10 according to the invention, which in this embodiment is designed as an exchangeable, conically tapered tip 15, wherein different exchangeable tips 15, preferably with different geometries, diameters and in particular made of different materials with different material properties, can be provided for different purposes.
  • the conically tapered free end of the electric extinguishing lance 10 according to the invention has a maximum outer diameter which is between 1/3 and 3/4, preferably between 1/2 and 2/3, of the outer diameter of the tubular extinguishing section 13.
  • nozzles 17 for the discharge of pressurized liquid extinguishing agent can be integrated, wherein the nozzles are preferably shaped such that they optimally inject extinguishing agent into the burning object and/or distribute it over its surface.
  • a transition section 18 is arranged, which is geometrically designed such that it transfers the maximum outer diameter of the conical free end with a cone angle between 55° and 85°, in the embodiment shown approximately 70°, to the full outer diameter of the tubular extinguishing section 13.
  • a cylindrical intermediate section 19 with an axial length L ZA between 30 mm and 80 mm, preferably about 50 mm, whose diameter corresponds to the maximum outer diameter of the conical free end and which transfers the conical free end to the beginning of the transition section 18 at its minimum outer diameter.
  • the tip 15 When the electric fire extinguishing lance 10 according to the invention is struck with the tip 15 into a solid object to be extinguished, often an electric battery, the tip initially penetrates quickly into the object up to the operator-side end of the cylindrical intermediate section 19. However, the transition section 18 then ensures increasing mechanical resistance. As a result, the operating firefighter notices that the tip 15 now extends over a little more than the length of the conical end piece and the cylindrical intermediate section 19 has penetrated the object. At this moment, it will therefore quickly stop the power supply to the impact section 14 in order not to completely penetrate the object and then land with the extinguishing tip and nozzles 17 outside the object, which would make effective extinguishing significantly more difficult or even impossible.
  • a cylindrical connecting section 20 with an axial length L AA of between 10 mm and 30 mm, preferably approximately 20 mm, is arranged between the maximum outer diameter of the transition section 18 and the beginning of the tubular extinguishing section 13, the diameter of which corresponds to the outer diameter of the tubular extinguishing section 13 and which transfers the transition section 18 to the beginning of the tubular extinguishing section 13.
  • the cylindrical connection section 20 and possibly also a small part of the transition section 18 has two opposite bevels 21 , which can serve as starting surfaces for a wrench to facilitate assembly and disassembly of the replaceable tip 15.
  • the replaceable tip 15 can be provided with a screw thread (not shown in the drawing) or a bayonet lock for releasable attachment to the tubular extinguishing section 13.
  • FIGS. 5a to 5f show, partly in enlarged detail, auxiliary devices for the axial extension of the electric extinguishing lance 10 according to the invention with respect to its longitudinal axis.
  • tubular extinguishing section 13 can itself be designed to be extendible, in particular by means of one or more tubular extension pieces 22, as shown in the Figures 5a and 5b and which have the same outer diameter as the operator-side first part of the tubular extinguishing section 13.
  • connection means are provided at one or both axial ends of the extension piece 22 in the embodiments shown.
  • a first weld-in bushing 13' is shown in detail, which is also already in the Figures 1a , 2a and 2b can be seen.
  • this first weld-in bushing 13' is arranged at the right end of the extension piece 22.
  • the large-surface impact plate 14' of the impact section 14 can be arranged at the operator-side end of the holding section at a variable distance from the tubular extinguishing section 13.

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  • Business, Economics & Management (AREA)
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Claims (15)

  1. Lance d'extinction (10) destinée à éteindre des appareils électriques en feu, tels que des véhicules équipés d'un moteur électrique, la lance d'extinction (10) présentant une section de maintien comportant une partie de préhension (11) pour un utilisateur, une alimentation en agent d'extinction comportant un dispositif d'accouplement (12) pour le raccordement d'un tuyau sous pression pour un agent d'extinction liquide, ainsi qu'une section d'extinction (13) tubulaire se raccordant à la section de maintien et le cas échéant au dispositif d'accouplement (12), l'agent d'extinction pouvant être introduit sous pression à partir de l'extrémité libre de ladite section d'extinction dans un objet en feu, la partie de préhension (11) de la section de maintien présentant un revêtement (11a) isolant contre les tensions qui est réalisé de manière à être électriquement isolant également contre des tensions électriques U ≥ 500 V, la section d'extinction (13) tubulaire étant fabriquée en un matériau qui présente une résistance à la traction Rm tellement élevée qu'il résiste à une tension mécanique σ ≥ 500 N/mm2 et qui présente une température de fusion tS ≥ 650 °C, la section d'extinction (13) tubulaire étant conçue, au niveau de son extrémité libre, de manière géométriquement effilée et présentant une section transversale d'écoulement utile rétrécie pour l'agent d'extinction guidé sous pression à travers celle-ci, la section d'extinction (13) tubulaire tout comme l'extrémité libre effilée de la section d'extinction (13) tubulaire étant produites en acier inoxydable, et l'extrémité libre effilée de la section d'extinction (13) tubulaire étant en outre trempée,
    caractérisée en ce que
    la section d'extinction (13) tubulaire présente, au moins dans la zone de la section de maintien également en dehors de la partie de préhension (11), un revêtement (13a) isolant contre les tensions qui est réalisé de manière à être électriquement isolant contre des tensions électriques U ≥ 500 V, en ce que l'extrémité libre de la section d'extinction (13) tubulaire est conçue de manière coniquement effilée et présente un diamètre externe maximal qui est situé entre 1/3 et 3/4 du diamètre externe de la section d'extinction (13) tubulaire,
    et en ce qu'une section de transition (18) est disposée entre l'extrémité libre coniquement effilée et la section d'extinction (13) tubulaire qui y est raccordée, laquelle section de transition est géométriquement conçue de telle sorte qu'elle fait passer le diamètre externe maximal de l'extrémité libre conique, selon un angle de cône compris entre 55° et 85°, au diamètre externe complet de la section d'extinction (13) tubulaire.
  2. Lance d'extinction selon la revendication 1, caractérisée en ce que le revêtement (13a) isolant contre les tensions de la section d'extinction (13) tubulaire présente, au moins dans la zone de la section de maintien comportant la partie de préhension (11), une épaisseur de couche d ≥ 2 mm, en particulier comprise entre 2 mm et 5 mm, et en ce que le revêtement (11a) isolant contre les tensions de la partie de préhension (11) de la section de maintien ainsi qu'également le revêtement (13a) de la section d'extinction (13) sont réalisés de manière à être électriquement isolants contre des tensions électriques U jusqu'à 1000 V et plus.
  3. Lance d'extinction selon l'une des revendications 1 ou 2,
    caractérisée en ce que la section d'extinction (13) tubulaire est constituée d'acier VA, en particulier d'acier Cr-Ni 18/10 austénitique résistant aux acides, et le revêtement (13a) isolant contre les tensions de la section d'extinction (13) tubulaire est constitué de poly(chlorure de vinyle).
  4. Lance d'extinction selon l'une des revendications précédentes, caractérisée en ce que l'extrémité libre de la section d'extinction (13) tubulaire présente un diamètre externe maximal qui est situé entre 1/2 et 2/3 du diamètre externe de la section d'extinction (13) tubulaire.
  5. Lance d'extinction selon la revendication 4, caractérisée en ce que la section de transition (18) est conçue géométriquement de telle sorte qu'elle fait passer le diamètre externe maximal de l'extrémité libre conique, selon un angle de cône d'environ 70°, au diamètre externe complet de la section d'extinction (13) tubulaire.
  6. Lance d'extinction selon la revendication 5, caractérisée en ce qu'une section intermédiaire (19) cylindrique d'une longueur axiale LZA comprise entre 30 mm et 80 mm, de préférence d'approximativement 50 mm, dont le diamètre correspond au diamètre externe maximal de l'extrémité libre conique et qui fait passer l'extrémité libre conique au début de la section de transition (18) à son diamètre externe minimal, est disposée entre le diamètre externe maximal de l'extrémité libre conique et la section de transition (18).
  7. Lance d'extinction selon la revendication 5 ou 6,
    caractérisée en ce qu'une section de raccordement (20) cylindrique de la longueur axiale LAA comprise entre 10 mm et 30 mm, de préférence d'approximativement 20 mm, dont le diamètre correspond au diamètre externe de la section d'extinction (13) tubulaire et qui fait passer la section de transition (18) au début de la section d'extinction (13) tubulaire, est disposée entre le diamètre externe maximal de la section de transition (18) et le début de la section d'extinction (13) tubulaire.
  8. Lance d'extinction selon l'une des revendications 5 à 7,
    caractérisée en ce que l'extrémité libre coniquement effilée de la section d'extinction (13) tubulaire est fabriquée d'un seul tenant avec la section de transition (18), le cas échéant également d'un seul tenant avec la section intermédiaire (19) cylindrique et la section de raccordement (20) cylindrique.
  9. Lance d'extinction selon l'une des revendications 4 à 8,
    caractérisée en ce que l'extrémité libre coniquement effilée de la section d'extinction (13) tubulaire, le cas échéant également la section de transition (18), la section intermédiaire (19) cylindrique et la section de raccordement (20) cylindrique, sont conçues sous forme de pointe (15) remplaçable par rapport à la section d'extinction (13) tubulaire et sont de préférence pourvues d'un filetage ou d'une fermeture à baïonnette pour le maintien amovible au niveau de la section d'extinction (13) tubulaire.
  10. Lance d'extinction selon les revendications 8 et 9, caractérisée en ce que la section de raccordement (20) cylindrique, et le cas échéant également la section de transition (18), présentent un biseau (21) en tant que surface d'appui pour une clé plate pour le montage et le démontage aisés de la pointe (15) remplaçable.
  11. Lance d'extinction selon l'une des revendications précédentes, caractérisée en ce que la section de maintien présente, au niveau de l'extrémité côté utilisateur, une section de frappe (14) dans le prolongement de la section d'extinction (13) tubulaire, dont la surface d'extrémité côté utilisateur est conçue comme une plaque de frappe (14') de grande surface et présente un diamètre externe supérieur à celui de la section d'extinction (13) tubulaire, de préférence compris entre 1,5 fois et 2,5 fois le diamètre externe de la section d'extinction (13) tubulaire, en particulier un diamètre externe au moins deux fois plus grand, et en ce que la section de frappe (14) est fabriquée en un matériau plein, en particulier en métal, et de préférence conçue de manière remplaçable, en particulier sous forme d'un mandrin de frappe (16) pouvant être enfiché ou vissé sur la partie de préhension (11) dans le prolongement de l'axe longitudinal de la section d'extinction (13) tubulaire.
  12. Lance d'extinction selon la revendication 11, caractérisée en ce que la plaque de frappe (14') présente une forme cylindrique comportant au moins une, de préférence deux, surfaces de biseau (14") opposées de manière parallèle.
  13. Lance d'extinction selon la revendication 11 ou 12,
    caractérisée en ce qu'un premier dispositif de mise à la terre pour l'établissement d'une connexion électriquement conductrice au potentiel de tension de la terre est présent au niveau de la section de frappe (14), de préférence au niveau de la partie de la section de frappe (14) consécutive à la plaque de frappe (14') de grande surface dans la direction axiale de la section d'extinction (13) tubulaire, lequel dispositif comprend en particulier une vis de mise à la terre (14"') ainsi qu'un câble de mise à terre.
  14. Lance d'extinction selon l'une des revendications précédentes, caractérisée en ce que le dispositif d'accouplement (12) présente, pour le raccordement d'un tuyau sous pression pour l'agent d'extinction liquide, un second dispositif de mise à la terre pour l'établissement d'une connexion électriquement conductrice au potentiel de tension de la terre, lequel dispositif comprend en particulier un écrou de mise à la terre (12"') ainsi qu'un second câble de mise à la terre.
  15. Lance d'extinction selon l'une des revendications précédentes, caractérisée en ce que la lance d'extinction (10) est conçue de manière extensible par rapport à son axe longitudinal, la plaque de frappe (14') de grande surface de la section de frappe (14) étant en particulier disposée, au niveau de l'extrémité côté utilisateur de la section de maintien, à une distance variable par rapport à la section d'extinction (13) tubulaire, et/ou la section d'extinction (13) tubulaire étant conçue pour sa part de manière extensible, en particulier au moyen d'une ou de plusieurs pièces d'extension (22) tubulaires qui présentent le même diamètre externe que celui de la section d'extinction (13) tubulaire.
EP21724650.3A 2020-05-07 2021-05-07 Lance d'extinction électronique améliorée Active EP4146357B1 (fr)

Applications Claiming Priority (2)

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DE202020102574.0U DE202020102574U1 (de) 2020-05-07 2020-05-07 Verbesserte E-Löschlanze
PCT/EP2021/062143 WO2021224457A1 (fr) 2020-05-07 2021-05-07 Lance d'extinction électronique améliorée

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EP4146357C0 EP4146357C0 (fr) 2024-04-17
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EP (1) EP4146357B1 (fr)
KR (1) KR20230005997A (fr)
CA (1) CA3182374A1 (fr)
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WO (1) WO2021224457A1 (fr)

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DE202021102269U1 (de) 2021-04-28 2021-05-14 Murer-Feuerschutz Gmbh E-Löschlanze mit Positionshalter zur Brandbekämpfung bei elektrisch geladenen Objekten
DK181580B1 (en) * 2022-08-09 2024-06-04 Joeni Holding Aps Battery penetration device for fighting fires in electric vehicle
DE102023108767A1 (de) 2023-04-05 2024-10-10 Paxos Consulting & Engineering GmbH & Co. KG System, Löschlanze und Löschvorbereitung zum Zuführen eines Kühlfluids zu einem Energiespeicher eines beschädigten und/oder brennenden Elektrofahrzeug
KR102672107B1 (ko) 2023-09-11 2024-06-04 서울특별시 전기차량의 소방용 상부 관통형 관창
DE202024000438U1 (de) 2024-03-04 2024-04-18 Samuel Barreto Branderkennungs- und -bekämpfungssystem für einen Parkplatz eines Elektrofahrzeugs

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US4219084A (en) * 1978-04-19 1980-08-26 Nasa Fire extinguishing apparatus having a slidable mass for a penetrator nozzle
US4802535A (en) 1987-01-27 1989-02-07 Bakke Arlan N Fire-fighting tool
FR2733701B1 (fr) 1995-05-04 1997-06-13 Inst Francais Du Petrole Procede de pretraitement selectivant de tamis moleculaire et procede d'isomerisation squelettale des olefines lineaires avec le tamis pretraite
US6668939B2 (en) * 2001-06-04 2003-12-30 Larry L. Schmidt Piercing nozzle
US20030159837A1 (en) 2002-02-25 2003-08-28 Itschner Theodore Thomas Multipurpose water hammer with a penetrating nozzle
US20130112045A1 (en) * 2011-11-03 2013-05-09 Chris Piveronas Sledge hammer with slot for halligan tool
DE102016211854B3 (de) 2016-06-30 2017-08-24 Ellermann Eurocon GmbH Behälter zum Bergen havarierter Fahrzeuge und Verfahren zum Bergen eines havarierten Fahrzeugs
DE102017113536A1 (de) * 2017-06-20 2018-12-20 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren und Vorrichtung zum Erden eines verunfallten Hybrid- oder Elektro-Straßenfahrzeugs
DE202017104411U1 (de) * 2017-07-24 2017-08-08 Murer-Feuerschutz Gmbh E-Löschlanze zur Brandbekämpfung bei elektrisch geladenen Objekten

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EP4146357A1 (fr) 2023-03-15
US20230241433A1 (en) 2023-08-03
CA3182374A1 (fr) 2021-11-11
EP4146357C0 (fr) 2024-04-17
WO2021224457A1 (fr) 2021-11-11
KR20230005997A (ko) 2023-01-10
DE202020102574U1 (de) 2020-05-28

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