EP4146357A1 - Lance d'extinction électronique améliorée - Google Patents

Lance d'extinction électronique améliorée

Info

Publication number
EP4146357A1
EP4146357A1 EP21724650.3A EP21724650A EP4146357A1 EP 4146357 A1 EP4146357 A1 EP 4146357A1 EP 21724650 A EP21724650 A EP 21724650A EP 4146357 A1 EP4146357 A1 EP 4146357A1
Authority
EP
European Patent Office
Prior art keywords
extinguishing
section
tubular
free end
lance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21724650.3A
Other languages
German (de)
English (en)
Other versions
EP4146357B1 (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
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 Murer Feuerschutz GmbH, Volkswagen AG filed Critical Murer Feuerschutz GmbH
Publication of EP4146357A1 publication Critical patent/EP4146357A1/fr
Application granted granted Critical
Publication of EP4146357B1 publication Critical patent/EP4146357B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • 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
    • 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 an electric motor, the extinguishing lance having a holding section with a handle for an operator, an extinguishing agent feed with a coupling device for connecting a pressure hose for liquid extinguishing agent, and one to the holding section and, if necessary the coupling device has a tubular extinguishing section adjoining the coupling device, from the free end of which extinguishing agent can be introduced under pressure into a burning object, the handle part of the holding section having a voltage-insulating coating which is also designed to be electrically insulating for electrical voltages U between 500V and 1000V,
  • the tubular quenching section is made of a material which has such a high tensile strength Rm that it withstands a mechanical stress s> 500 N / mm 2 , and which has a melting temperature ts> 650 ° C, the tube shaped extinguishing section is
  • a particular problem with a fire in such an electric vehicle is that when it is extinguished, there are not only considerable dangers from the fire and the fire itself, as well as possible self-igniting elements such as lithium-ion batteries, but also from the spread of high voltages or currents due to the im
  • the high-performance electrics or accumulators installed in the vehicle must be checked. It is therefore important to prevent this effectively.
  • US 2003/0159837 A1 shows a "multi-purpose water hammer" with a pointed nozzle which is intended to penetrate an object to be erased when used.
  • the erasing head is placed there at an angle of 90 ° on the tubular erasing section.
  • This device in an electric vehicle would have to be worked very close to the battery to be extinguished when striking the outer shell of the vehicle in order to achieve an effective effect indicated.
  • years 2002 and 2003 one probably did not think of vehicles with electric drives - as they do today.
  • US 2002/019307 A1 indicates insulation against electrical voltage in the event of contact with wires in a building wall, but no insulation against high voltage, such as occurs in batteries of electric vehicles.
  • the extinguishing agent is fed in via the end of the known extinguishing lance, so that it is not possible to drive the lance into a vehicle outer shell with a striking tool.
  • Such a conventional release lance is suitable for extinguishing buildings and possibly also burning conventionally powered vehicles, but by no means for extinguishing burning electric vehicles, mainly because of the - in contrast to normal buildings (apart from electricity -) Power plants) and usual vehicles - expected high electrical voltages U >> 200V.
  • the object of the present invention is to provide an E-extinguishing lance of the type defined at the beginning with the simplest possible technical means, inexpensive and inexpensive, with which both the minimum requirements for protection against thermal hazards and protection against mechanical overloads as well as protection against electrical hazards are safely met.
  • this - in practice life-sustaining and saving- task for the operator is achieved in a surprisingly simple and effective way by an electric extinguishing lance of the type defined at the outset, which is, however, suitable for really safe work under electrical voltage, in that the tubular extinguishing section at least has a voltage-insulating coating in the area of the holding section with the handle part, which is designed to be electrically insulating for electrical voltages U> 500V.
  • an e-extinguishing lance is provided which completely solves the problem of the invention formulated above.
  • the electric extinguishing lance according to the invention is also specifically for extinguishing lithium-ion batteries installed in electric vehicles suitable. This means that fire brigades are now provided with an effective and all-round safe extinguishing device for applications involving burning objects under high voltage.
  • a large-area striking plate at the operator-side end of the holding section can be provided for making areal body contact with an operator.
  • a striking plate of this type which is attached centrally, ensures, in particular, that it is hammered in as straight as possible, in order to prevent the E-extinguishing lance from bending.
  • a spacer section to the tubular extinguishing section can also be provided next to the striking plate.
  • the e-extinguishing lance can be inserted into the battery of a burning electric vehicle, for example. Due to the point in the foremost area, material standing in the way, such as a battery wall, can be easily pierced. Such a high-strength but pointed nozzle avoids or at least minimizes wear, with penetration into the surface of the object to be erased being made easier.
  • 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.
  • 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 the handle part, and that the voltage-insulating coating of the handle part the holding section as well as the erasing section is designed to be electrically insulating for electrical voltages U up to 1000V and above.
  • the handle part itself in connection with the tubular extinguishing section in the area of the holding section can now ensure adequate protection of the operator against electrical voltages.
  • Developments of this class of embodiments are very particularly preferred, which are characterized in that the voltage-isolating coating of the handle part and also of the extinguishing section is also designed for electrical voltages U> 1000V.
  • the stress-isolating coating of the handle part and also of the extinguishing section already at least meet the minimum requirements of the European Standards 60903 and / or 659 for insulating protective gloves for work under electrical voltage are sufficient. It is also advantageous if the tension-insulating coating of the handle part and also of 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 stress-isolating coating of the handle part and also of the extinguishing section is made up 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 particularly chemically resistant to battery acid, for example in an electric vehicle that is to be extinguished. This as well as the above-mentioned preferred machining variant of the tip contribute to increased mechanical and chemical resistance and thus to a longer durability.
  • the handle part of the holding section has at least one bow-shaped handle with hand protection. This enables safe operability and good localization of the battery.
  • the bow-shaped handle serves as protection against unwanted deformation of the lance when it is hammered into the extinguishing object.
  • the embodiments of this class can be further improved by further developments in which the handle part of the holding section has two bow handles for two-handed operation of the electric extinguishing lance. This ensures safe operability and localization in the extinguishing object that is to be penetrated.
  • an actuating valve for admitting or stopping a flow of extinguishing agent into the tubular extinguishing section is provided on the extinguishing agent supply and a triggering device for manual control of the actuating valve is provided on the holding section, preferably on the handle part.
  • Embodiments of the electrical extinguishing lance according to the invention are also preferred in which the free end of the tubular extinguishing section is designed to be pointed, in particular conical, tapering. This enables a particularly straight and easy impact into the object to be deleted.
  • the tip of the tubular extinguishing section has a maximum outside diameter which is between 1/3 and 3/4, preferably between 1/2 and 2/3, of the outside diameter of the tubular extinguishing section.
  • the battery is built into almost the entire base plate, but only about 4-5 cm thick.
  • the E-extinguishing lance is inserted into the battery through the base plate.
  • a transition section is arranged between the conically tapered free end and the adjoining tubular extinguishing section, which is geometrically designed so that it has the maximum outer diameter of the conical free end with a cone angle between 55 ° and 85 °, preferably about 70 °, transferred to the full outer diameter of the tubular extinguishing section.
  • This transition section ensures a noticeable increase in the mechanical resistance when the extinguishing lance hits the object to be extinguished.
  • a cylindrical intermediate section with an axial length LZA 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 is the maximum outer diameter of the conical free end End corresponds and which transfers the conical free end to the beginning of the transition section at its minimum outer diameter.
  • the cylindrical intermediate section initially provides for one after the tip has penetrated constant mechanical resistance when the extinguishing lance is hammered into the object to be extinguished, before the transition section described above then slows down the further advance of the extinguishing lance tip again.
  • a class of embodiments is particularly preferred in which the tapering free end of the tubular extinguishing section, possibly also the transition section, the cylindrical intermediate section and the cylindrical connecting section, is designed as an exchangeable tip compared to the tubular extinguishing section.
  • the E-extinguishing lance can also be used for other types of extinguishing agent.
  • the tip can be quickly and easily exchanged for another when worn. Since a fire in a lithium-ion battery in an electric vehicle can cause temperatures of up to 1000 ° C, it may be necessary to replace it due to the increased wear and tear on the tip.
  • Variants are particularly practical in which the cylindrical connection section and, if applicable, also the transition section have a bevel 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 extinguishing agent is integrated into the tapering free end of the tubular extinguishing section, the nozzle preferably being shaped so that it optimally penetrates the extinguishing agent injected burning object and / or distributed on its surface.
  • a class of embodiments of the extinguishing lance according to the invention in which the holding section at the operator-side end has a striking section in extension to the tubular extinguishing section, the operator-side end surface of which is designed as a large-area striking 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 striking section is preferably made of solid material, in particular metal, and is particularly preferably designed to be exchangeable, in particular in the form of a striking pin that can be attached or screwed onto the handle part as an 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 sledgehammer does not always hit the center, which is Penetration of the E-extinguishing lance into the object to be extinguished difficult.
  • the screw thread can be knocked crooked by the impact of an exchangeable impact head. In order to distribute the impact more evenly, it is therefore suggested to enlarge the thread a little and to remove the curves from the impact head in the front and rear areas. This means that the operator now always hits the impact head in the center.
  • the electric extinguishing lance according to the invention is designed with the electrical insulation described above in the grip area.
  • a conductive connection to the earth potential should be established.
  • a first grounding device for establishing an electrically conductive connection with the voltage potential of the earth in particular a grounding screw as well as a grounding device, can therefore be present in further developments 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 includes a ground wire.
  • the coupling device for connecting a pressure hose for liquid extinguishing agent has a second grounding device for establishing an electrically conductive connection to the voltage potential of the ground, which in particular comprises a grounding nut and a second grounding cable.
  • Embodiments are therefore particularly advantageous in which the extinguishing lance, in particular the striking section, is constructed to be divisible.
  • the extinguishing lance according to the invention can thus be used in a particularly flexible manner, for example in the event of a vehicle fire in one's own garage or in a multi-storey car park.
  • cases of self-ignition of lithium-ion batteries have come through the press, which have led to fires in buildings and considerable damage.
  • the extinguishing lance is designed to be extendable with respect to its longitudinal axis, in particular the striking plate of the striking section being arranged at the operator-side end at a variable distance from the tubular extinguishing section. This configuration makes the extinguishing lance particularly suitable for use in 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 external diameter as the tubular extinguishing section.
  • This also results in greater flexibility in use.
  • FIG. 1a shows a schematic side view of a first embodiment of the electrical extinguishing lance according to the invention with a voltage-insulating coating of the tubular extinguishing section in the area of the handle;
  • FIG. 1b shows the embodiment of FIG. 1a in a partially transparent view from above in the direction of the axis of the tubular extinguishing section;
  • FIG. 2a shows a detailed view of a further embodiment of the electric extinguishing lance according to the invention in the area of the handle with brackets extending to the tubular extinguishing section and with wing nuts on the coupling device for extinguishing water;
  • FIG. 2b shows the embodiment of FIG. 2a in a vertical longitudinal sectional view from the side;
  • FIG. Fig. 2c Detail Z from Fig. 2b with a receptacle for a
  • FIG. 3a shows a schematic three-dimensional representation of a punching mandrel with a striking plate on the rear, bevel surface and grounding screw for application to the handle part in FIG
  • FIG. 3b shows a side view of the embodiment of FIG. 3a with a view of the bevel surface
  • 3c shows the side view of FIG. 3b rotated by 90 ° about the longitudinal axis with a view of the grounding screw;
  • 4a shows a schematic three-dimensional representation of an exchangeable tip of the tubular extinguishing section;
  • FIG. 4b shows a schematic side view of the tip according to FIG. 4a with a view of one of the two opposite bevel surfaces;
  • FIG. 4c shows the embodiment of FIG. 4b rotated by 90 ° about the longitudinal axis of the tip with a view in each case from the side onto both mutually opposite bevel surfaces;
  • FIG. 4d shows the embodiment of the tip from FIG. 4c in a vertical longitudinal section;
  • FIG. 4e shows the nozzle distribution of the tip from FIG. 4c in an enlarged detail with a viewing direction parallel to the longitudinal axis of the tip;
  • FIG. 4c shows the embodiment of FIG. 4b rotated by 90 ° about the longitudinal axis of the tip with a view in each case from the side onto both mutually opposite bevel surfaces;
  • FIG. 4d shows the embodiment of the tip from FIG. 4c in a vertical longitudinal section;
  • FIG. 4e shows the nozzle distribution of the tip from FIG. 4c in an enlarged detail with a viewing direction parallel to the longitudinal axis of the tip;
  • 5a shows an extension piece for extending the axial length of the tubular extinguishing section in a vertical longitudinal section
  • FIG. 5b shows a side view of the extension piece from FIG. 5a in the viewing direction perpendicular to the longitudinal axis, each with a weld-in socket at both ends for installing the extension piece in the tubular extinguishing section;
  • FIG. 5c shows an enlarged side view of the left weld-in socket of the extension piece from FIG. 5b;
  • FIG. 5d shows the weld-in socket from FIG. 5c in a vertical longitudinal section
  • FIG. 5e shows an enlarged side view of the right weld-in socket of the extension piece from FIG. 5b in a vertical longitudinal section
  • FIG. 5f shows the weld-in socket from FIG. 5e with a viewing direction parallel to the longitudinal axis of the right-hand weld-in socket.
  • the extinguishing lance 10 also has a holding section with a handle 11 for an operator, an extinguishing agent feed with a coupling device 12 for connecting a pressure hose for liquid extinguishing agent, as well as one on 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 introduced under pressure into a burning object.
  • the handle part 11 of the holding section has a voltage-insulating coating 11a, which is also designed to be electrically insulating for electrical voltages U> 500V, the tubular extinguishing section 13 being geometrically tapered at its free end and a narrowed clear flow cross-section for the extinguishing agent passed through under pressure having.
  • the E-extinguishing lance 10 is characterized in that the tubular extinguishing section 13 now also has a voltage-insulating coating 13a, at least in the area of the holding section with the handle part 11, which is electrically insulating for electrical voltages U > 500V is carried out.
  • this stress-isolating 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 area of the holding section with the handle part 11, and the stress-isolating coating 11a of the handle part 11 of the holding section and also the coating 13a of the extinguishing section 13 can even be designed to be electrically insulating for electrical voltages U up to 1000V and above.
  • tubular extinguishing section 13 can be made of VA steel, in particular austenitic, acid-resistant 18/10 Cr-Ni steel, and the stress-isolating coating 13a of the tubular extinguishing section 13 can be made of polyvinyl chloride.
  • the handle part 11 of the holding section has two bow handles 11 ′, 11 ′′ for two-handed operation of the electrical extinguishing lance 10.
  • the e-extinguishing lance 10 according to the invention can have an actuating valve (not shown) on the extinguishing agent supply for admitting or stopping a flow of extinguishing agent into the tubular extinguishing section 13 and on the holding section, preferably on the handle part 11, a trigger device for manual control of this actuating valve.
  • an actuating valve (not shown) on the extinguishing agent supply for admitting or stopping a flow of extinguishing agent into the tubular extinguishing section 13 and on the holding section, preferably on the handle part 11, a trigger device for manual control of this actuating valve.
  • the first a has a preferably exchangeable impact section 14 in extension to the tubular extinguishing section 13 at the operator-side end following the holding section, which enables the introduction of impact force in the direction of the longitudinal axis of the e-extinguishing lance 10 is used to drive them into an object to be deleted.
  • the free end of the electrical extinguishing lance 10 is designed as a preferably likewise exchangeable and specially hardened tip 15.
  • Figures 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 ground, which in the embodiment shown comprises a grounding nut 12 '"and a grounding cable (not specifically shown in the drawing).
  • a weld-in socket 13 ′ is provided here in the axial connection to the tubular quenching section 13, which enables the electric quenching lance 10 according to the invention to be extended, as explained in more detail below with reference to FIGS. 5a-f.
  • FIGS. 3a to 3c show in enlarged detail a hammer pin 16 which can be plugged or screwed on the holding section of the electric extinguishing lance 10, more precisely on the handle part 11 as an extension of the longitudinal axis of the tubular extinguishing section 13, which here forms the hammer section 14.
  • Its operator-side end surface 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 and 2.5 times the outer diameter of the tubular extinguishing section 13.
  • the striking pin 16 is preferably made of solid material, in particular Metal, manufactured.
  • the striking plate 14 ' has a cylindrical end with a large striking surface on the operator's side.
  • grounding device for establishing an electrically conductive connection to the voltage potential of the ground here includes a grounding screw 14 "'and a grounding cable - not specifically shown in the drawing
  • the punch 16 can be attached to the handle part 11, for example, by screwing it on or plugging it on, for example by means of a bayonet lock.
  • Figures 4a to 4e show in enlarged detail the tapered free end of the E-lance 10 according to the invention, designed in this embodiment as an exchangeable, conically tapered tip 15, with different exchangeable tips 15, preferably with different geometries, diameters and in particular from different materials with different material properties can be held.
  • the tapered free end of the E-extinguishing lance 10 according to the invention particularly preferably has a maximum external diameter which is between 1/3 and 3/4, preferably between 1/2 and 2/3, of the external diameter of the tubular extinguishing section 13.
  • nozzles 17 for the exit of pressurized liquid extinguishing agent can be integrated, wherein the nozzles are preferably shaped so that they optimally inject extinguishing agent into the burning object and / or distribute on its surface.
  • a transition section 18 is arranged, which is geometrically designed so that it has the maximum outer diameter of the conical free end with a cone angle between 55 ° and 85 °, in the embodiment shown about 70 ° , transferred to the full outer diameter of the tubular extinguishing section 13.
  • a cylindrical intermediate section 19 with an axial length LZA between 30mm and 80mm, preferably about 50mm, the diameter of which corresponds to the maximum outer diameter of the conical free end and which is the conical free end transferred to the beginning of the transition section 18 at its minimum outer diameter.
  • the tip 15 When the e-extinguishing lance 10 according to the invention is hammered with the tip 15 into a massive object to be erased, often an electric battery, the tip initially penetrates quickly into the object as far as the operator-side end of the cylindrical intermediate section 19. However, the transition section 18 then provides an increasing mechanical resistance. As a result, the operating firefighter notices that the tip 15 is now slightly more than the length of the conical end piece and the cylindrical Intermediate section 19 has penetrated the object. At this moment, he will therefore quickly terminate the power supply to the striking section 14 so as not to completely pierce the object and then land with the extinguishing tip and the nozzles 17 outside the object, which would make effective extinguishing significantly more difficult or even impossible.
  • the cylindrical connection section 20 and possibly also a small part of the transition section 18 has two opposing bevels 21 which can serve as attachment surfaces for a screw wrench for easier assembly and disassembly of the replaceable tip 15.
  • the exchangeable tip 15 can be provided with a screw thread (not shown in the drawing) or a bayonet lock for detachable attachment to the tubular extinguishing section 13.
  • FIGS. 5a to 5f show, partly in enlarged detail, auxiliary devices for the axial extension of the E-extinguishing lance 10 according to the invention with respect to its longitudinal axis.
  • the tubular extinguishing section 13 can in turn be designed to be extendable, in particular by means of one or more tubular extension pieces 22, as shown in Figures 5a and 5b and which have the same outer diameter as the first part of the tubular extinguishing section 13 on the operator side.
  • connection means are provided at one or both axial ends of the extension piece 22 in the exemplary embodiments shown.
  • FIGS. 5e and 5f a first weld-in socket 13 'is shown in detail, which can also be seen in FIGS. La, 2a and 2b.
  • this first weld-in socket 13 ′ is arranged at the right end of the extension piece 22.
  • FIGS. 5c and 5d Another weld-in socket 22 'at the left end of the extension piece 22 shown in FIG. 5b is shown in greater detail in FIGS. 5c and 5d.
  • the large-area impact plate 14 ′ of the impact section 14 can also 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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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

La présente invention concerne une lance d'extinction (10) pour appareils électriques brûlant, la lance d'extinction comprenant : une partie de maintien ayant une partie de poignée (11) pour le fonctionnement ; une alimentation en agent d'extinction ayant un dispositif de couplage (12) pour raccorder un tuyau de pression pour agent d'extinction ; et une partie d'extinction tubulaire (13), comportant une extrémité libre par laquelle un agent d'extinction est introduit, sous pression, dans l'objet qui brûle. La partie poignée de la partie de maintien a un revêtement (11a) qui est isolant pour des tensions U ≥ 500 V. La partie d'extinction est constituée d'un matériau à haute résistance à la traction Rm, ledit matériau résistant à une contrainte mécanique σ de ≥ 500 N/mm2 et ayant une température de fusion ts of ≥ 650°C. Au niveau de l'extrémité libre de la partie d'extinction, la partie d'extinction se rétrécit jusqu'à un point et présente une section transversale d'écoulement creuse rétrécie pour l'agent d'extinction sous pression. La partie d'extinction et son extrémité effilée, en outre durcie, sont produites à partir d'acier inoxydable. La lance d'extinction est caractérisée en ce que la partie d'extinction présente, au moins dans la zone de la partie de maintien, un revêtement isolant contre la tension (13a), qui est électriquement isolant pour des tensions U ≥ 500 V. Ainsi, les exigences légales minimales pour la protection contre les risques thermiques, contre les surcharges mécaniques et contre les dangers électriques sont satisfaites de manière fiable.
EP21724650.3A 2020-05-07 2021-05-07 Lance d'extinction électronique améliorée Active EP4146357B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Publications (2)

Publication Number Publication Date
EP4146357A1 true EP4146357A1 (fr) 2023-03-15
EP4146357B1 EP4146357B1 (fr) 2024-04-17

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EP21724650.3A Active EP4146357B1 (fr) 2020-05-07 2021-05-07 Lance d'extinction électronique améliorée

Country Status (6)

Country Link
US (1) US20230241433A1 (fr)
EP (1) EP4146357B1 (fr)
KR (1) KR20230005997A (fr)
CA (1) CA3182374A1 (fr)
DE (1) DE202020102574U1 (fr)
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
DK202270402A1 (en) * 2022-08-09 2024-02-19 Joeni Holding Aps Battery penetration device for fighting fires in electric vehicle

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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
DE102016211854B3 (de) 2016-06-30 2017-08-24 Ellermann Eurocon GmbH Behälter zum Bergen havarierter Fahrzeuge und Verfahren zum Bergen eines havarierten Fahrzeugs
DE202017104411U1 (de) 2017-07-24 2017-08-08 Murer-Feuerschutz Gmbh E-Löschlanze zur Brandbekämpfung bei elektrisch geladenen Objekten

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US20230241433A1 (en) 2023-08-03
CA3182374A1 (fr) 2021-11-11
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WO2021224457A1 (fr) 2021-11-11
EP4146357B1 (fr) 2024-04-17

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