EP4082631A1 - Lance d'extinction linéaire pourvue de support de position destinée à la lutte contre l'incendie en cas d'objets électriquement chargés - Google Patents

Lance d'extinction linéaire pourvue de support de position destinée à la lutte contre l'incendie en cas d'objets électriquement chargés Download PDF

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Publication number
EP4082631A1
EP4082631A1 EP22169231.2A EP22169231A EP4082631A1 EP 4082631 A1 EP4082631 A1 EP 4082631A1 EP 22169231 A EP22169231 A EP 22169231A EP 4082631 A1 EP4082631 A1 EP 4082631A1
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EP
European Patent Office
Prior art keywords
extinguishing
section
tubular
lance
arrangement according
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.)
Pending
Application number
EP22169231.2A
Other languages
German (de)
English (en)
Inventor
Albrecht RESCHKE
David Kühle
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
Original Assignee
Murer Feuerschutz GmbH
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 filed Critical Murer Feuerschutz GmbH
Publication of EP4082631A1 publication Critical patent/EP4082631A1/fr
Pending legal-status Critical Current

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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
    • 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
    • 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
    • A62C31/02—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds

Definitions

  • the invention relates to an extinguishing arrangement with a linear extinguishing lance for extinguishing burning electrical equipment, 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 a the holding section and optionally the coupling device adjoining linear tubular extinguishing section with a longitudinal axis, from the free end of which extinguishing agent can be introduced under pressure into a burning object, wherein the handle part and the tubular extinguishing section have a voltage-isolating coating, at least in the area of the holding section, which is electrically insulating is also designed for electrical voltages U ⁇ 500V, the tubular extinguishing section being made of a material which has such a high tensile strength R m that it can withstand a mechanical stress ⁇ ⁇ 500 N/mm 2 and which has
  • a particular problem in the event of a fire in such an electric vehicle is that when extinguishing it, there are not only significant risks from the fire and the fire itself, as well as possible self-igniting elements such as Lithium-ion accumulators go out, but also the dangers of spreading high voltages or high currents due to the high-performance electrics or accumulators installed in the vehicle must be controlled. It is therefore important to prevent this effectively.
  • Such a conventional extinguishing lance is suitable for extinguishing buildings and possibly also burning conventionally powered vehicles, but by no means for extinguishing burning electric vehicles, mainly because - in contrast to normal buildings (apart from electricity power plants ) and the usual high electrical voltages U >> 200V to be expected in vehicles.
  • the extinguishing arrangement includes a position holder which is designed in such a way that the extinguishing lance can be used during an operating phase of an extinguishing operation can be held by an assistant at a lateral distance from the extinguishing lance in a geometric position in which the longitudinal axis of the tubular extinguishing section is aligned at an angle of between 60° and 90° to the earth's surface, while an extinguishing person operates the extinguishing lance in the extinguishing operation.
  • an extinguishing arrangement with a position holder and an E-extinguishing lance is provided, which completely solves the inventive object formulated above.
  • the extinguishing arrangement according to the invention with position holder and e-extinguishing lance is especially suitable for lithium-ion batteries that are installed in electric vehicles.
  • the fire brigades thus have an effective and all-round safe extinguishing system available for applications involving burning objects under high voltage.
  • the E-extinguishing lance can be inserted into an electrical system, for example into the battery of a burning electric vehicle or an electronic generator.
  • the e-extinguishing lance is positioned over the electrotechnical system by a positioner and an operator drives the e-extinguishing lance into the electrotechnical system with its tip System, in the case of an electric vehicle usually through the vehicle floor.
  • the positioner can easily and automatically maintain a critical distance from the burning electrical system as well as from his or her colleague. In this way, the risk of being injured as a result of an electrical accident is minimized for all firefighters directly involved in the action to extinguish the burning electrical equipment.
  • the distance between the operator and the positioner can be regulated and increased by the position holder.
  • the immediate danger can be minimized that the operator will accidentally hit the positioner and injure it and thus additionally jeopardizes the extinguishing attempt and the positioner.
  • the position holder can increase the distance to the burning object for both actively acting firefighters, which can also reduce the heat radiation on the emergency services.
  • the tip in the front area can easily pierce material that is in the way, such as a floor panel or a battery wall.
  • a high-strength, yet pointed nozzle avoids or at least minimizes wear and tear, while facilitating penetration into 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.
  • the position holder has a tubular holding part with a longitudinal axis which projects laterally away from the extinguishing lance during operation, preferably approximately at right angles to the longitudinal axis of the tubular extinguishing section.
  • the holding part allows an operator to hold the extinguishing lance comfortably in its operating position.
  • the operator can easily drive the extinguishing lance into the object to be extinguished while the positioner on the position holder is securely positioned at a distance.
  • the right-angled alignment of the holding part to the e-extinguishing lance makes it particularly easy to align the lance and to hold it stably and precisely in an optimal extinguishing position.
  • a further preferred embodiment of the extinguishing arrangement according to the invention is characterized in that the position holder is permanently attached to the extinguishing lance.
  • extinguishing arrangement in which the position holder is detachably fastened to the extinguishing lance at least for the duration of an operating phase.
  • tubular holding part of the position holder has a voltage-insulating coating which is designed to be electrically insulating for electrical voltages U ⁇ 500V.
  • the stress-isolating coating can be arranged in the grip area of the position holder. At the same time, it can then mark the gripping area for the operator.
  • the voltage-isolating coating offer protection against the cold, for example when extinguishing with heavily chilled water or other extinguishing fluid. In addition, it can have an impact-dampening effect if, for example, the extinguishing lance is driven into the electrical system by an operator.
  • the stress-isolating coating of the tubular holding part has a layer thickness d ⁇ 2 mm, in particular between 2 mm and 5 mm, and is designed to be electrically insulating for electrical voltages U to 1000 V and above.
  • the tubular holding part of the position holder is made from aluminum, in particular from an Al alloy, preferably from about 30 mm thick AlCuMgPb, and the stress-isolating coating of the tubular holding part is made from polyvinyl chloride.
  • Aluminum and Al alloys such as AlCuMgPb have a low density of about 2.5 g/cm 3 to 3 g/cm 3 and are therefore lighter than, for example, different steels that could be used for similar components. As a result, the weight of the tubular holding part of the position holder can be kept particularly low, which is important for quick and uncomplicated operation of the extinguishing arrangement.
  • aluminum components are inexpensive to manufacture and very resistant to corrosive attack.
  • Polyvinyl chloride (PVC) has a high tracking resistance (i.e. the insulation resistance of the surface of insulating materials). This is particularly important for the stress insulating coating of the tubular support member. Components made of PVC are also inexpensive to produce and have a long service life.
  • tubular holding part of the position holder can be mechanically coupled reversibly to the extinguishing lance by means of a mechanical coupling device, in particular a clip, a clip, a fork or pliers.
  • the tubular holding part can be assembled in a simple manner and the assembly is simplified to such an extent that even a technical layman can immediately be put in a position to attach the tubular holding part to the extinguishing lance without any problems.
  • the safe and correct assembly of the tubular holding part is thus improved, particularly in hectic situations in which potentially fatal errors can accumulate.
  • the mechanical coupling device has a two-part clamp, the two halves of which are each constructed in a C-shape and the two ends of which are opposite one another in an operating phase of the quenching arrangement, the clamp being around the outer circumference of the tubular extinguishing section, preferably in the area of the holding section with the handle part, and the two opposite ends of the C-shaped halves are each brought closer to one another by means of a clamping device, so that the clamp is pulled together around the tubular extinguishing section and clamps it around .
  • the position holder with the mechanical coupling device can be connected to the tubular extinguishing section or released again in a particularly simple, quick and uncomplicated manner.
  • clamping devices include a hinge and/or a clamping screw.
  • the hinge or the clamping screw can facilitate handling of the extinguishing system according to the invention in such a way that there is no risk of the C-shaped halves of the mechanical coupling device falling apart when the clamping device is opened. This prevents these parts from getting lost, especially in situations where it is difficult to assess the situation or where visibility is restricted, for example due to smoke from the source of the fire.
  • the extinguishing arrangement can be put into a ready-to-use state more quickly as a result.
  • clamping screw has a threaded bush, a threaded bolt, a threaded pin and a screw handle, in particular a star handle.
  • the components can be installed securely and thus cannot be lost during use of the extinguishing arrangement.
  • a clamping screw designed in this way is particularly easy to operate and the E-extinguishing lance can be quickly and securely connected to the position holder via the mechanical coupling device.
  • tubular holding part is designed to be extendable with respect to its longitudinal axis.
  • This distance can be increased so that, for example, when extinguishing an electrical system that has caught fire, the distance between the burning object and the positioner is sufficiently large, for example 1 meter, so that the firefighters involved pose little or no danger when trying to extinguish the fire .
  • tubular holding part can be pulled apart or compressed like a telescope.
  • the tubular holding part has a base part and one or more extension pieces which can be connected to the base part in the direction of the longitudinal axis, preferably screwed to it and optionally to one another.
  • the distance from the operator of the position holder to the E-extinguishing lance can be further increased by the extension pieces. In particularly confusing and dangerous situations, the extinguishing lance is held in position from a safe distance and the safety of the operators is guaranteed.
  • the 1 shows an embodiment of the extinguishing arrangement according to the invention in a practical application, in this case the extinguishing of a car with an electric motor.
  • the extinguishing arrangement comprises an extinguishing lance 10 to which a position holder 30 and a pressure hose for liquid extinguishing agent is attached.
  • An assistant uses the position holder 30 to hold the extinguishing lance in position at a lateral distance from a tubular extinguishing section 13 .
  • An operator strikes a striking plate 14' of a striking section 14 with a hammer to drive the extinguishing lance 10 into the object to be extinguished.
  • the tubular extinguishing section 13 is aligned in a longitudinal axis z to the earth's surface.
  • the angle between the tubular extinguishing section 13 and the ground surface is approximately 90° in this illustration. At this angle, the best power transmission can be achieved when hitting.
  • the angle between the longitudinal axis z of the tubular deleting section 13 and the earth's surface is less than 90°. In an angular range of 60° to 90°, however, the operator can still optimally drive the extinguishing lance 10 into the object to be extinguished.
  • the position holder 30 is designed as a tubular holding part 31 with a longitudinal axis a which projects laterally away from the extinguishing lance 10 .
  • the longitudinal axis a of the tubular holding part 31 is arranged almost at right angles to the longitudinal axis z of the tubular extinguishing section 13 . This enables a particularly precise and simple positioning of the extinguishing lance 10 relative to the earth's surface.
  • the tubular holding part 31 consists of an approximately 30 mm thick AlCuMgPb alloy.
  • tubular holding parts 31 according to the invention can be made of aluminum or other Al alloys. The properties of these materials are of particular interest here, i.e. low weight due to the low density of aluminum or the Al alloys, good durability in general and good resistance to corrosion, as well as cost-effective production and processing.
  • the tubular holding part 31 can also be designed in such a way that it can be lengthened in the direction of its longitudinal axis a, for example in that it can be pulled apart or compressed like a telescope (not shown here).
  • the distance between the extinguishing lance 10 and the assistant can be varied easily and flexibly. For example, the distance can be increased in high-risk situations, thereby reducing the risk of injury, or in situations where high precision is required the alignment of the e-extinguishing lance 10 is required, at least be reduced.
  • the tubular holding part 31 has a stress-insulating coating 30a .
  • the voltage-isolating coating 30a should generally be designed in such a way that it has an electrically insulating effect for electrical voltages U ⁇ 500V and the risk of the assistant and the operator suffering an electric shock is thus minimized.
  • polyvinyl chloride is used as the stress-insulating covering 30a because this material has high tracking resistance, good formability, and is inexpensive to manufacture.
  • the layer thickness d of the stress-isolating coating 30a should be d ⁇ 2 mm (in particular in a range between 2 mm and 5 mm) in order to have an electrically insulating effect for electrical voltages U up to 1000 V and greater voltages.
  • the position holder 30 is also attached to the e-extinguishing lance 10 in such a way that the position holder 30 can be released again during operation, in particular after the extinguishing action has been completed.
  • this enables the geometry of the extinguishing arrangement to be quickly adapted to the conditions at the place of use, and on the other hand, transport to and from the place of use in a compact form.
  • the position holder can be permanently connected to the extinguishing lance. Such a structure is also easy to understand in terms of its functioning for people who are not technically gifted and can also be produced inexpensively.
  • the extinguishing lance 10 is mechanically coupled to the tubular holding part 31 of the position holder 30 by means of a mechanical coupling device 32 .
  • the tubular holding part 31 is rigidly attached to the mechanical coupling device 32 . This prevents the position holder 30 from slipping off and the handling of the extinguishing arrangement can be further improved.
  • the drawing shows an improved embodiment of the electrically insulating E-extinguishing lance 10 according to the invention for extinguishing burning objects under electrical voltage.
  • the E-extinguishing lance 10 used in the extinguishing arrangement 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 connection a pressure hose for liquid extinguishing agent, as well as the tubular extinguishing section 13 adjoining the holding section and optionally the coupling device 12, from the free end of which extinguishing agent can be introduced under pressure into a burning object.
  • the coupling device 12 is therefore set up and designed exclusively for the coupling of a pressure hose, and in no way for any type of spacer function.
  • the handle part 11 of the holding section has a voltage-isolating coating 11a , which is also designed to be electrically insulating for electrical voltages U ⁇ 500V, with the tubular extinguishing section 13 tapering geometrically to a point at its free end and having a narrowed clear flow cross-section for the extinguishing agent fed through under pressure having.
  • the e-extinguishing lance 10 used according to the invention 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 handle part 11, which is electrically insulating for electrical voltages U ⁇ 500V is.
  • this stress-insulating coating 13a of the tubular extinguishing section 13 can have a layer thickness d ⁇ 2 mm, in particular between 2 mm and 5 mm, at least in the area of the holding section with the grip part 11, and the stress-insulating coating 11a of the grip part 11 of the Holding section as well as the coating 13a of the erasing section 13 can even be designed to be electrically insulating for electrical voltages U to 1000V and above.
  • tubular quenching section 13 can be constructed from VA steel, in particular from austenitic, acid-resistant 18/10 Cr-Ni steel, and the stress-isolating coating 13a of the tubular quenching section 13 can be constructed from polyvinyl chloride.
  • 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 e-extinguishing lance 10 used in the extinguishing arrangement according to the invention 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 manual activation of this actuating valve exhibit.
  • 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 manual activation of this actuating valve exhibit.
  • the illustrated embodiment of the E-extinguishing lance 10 has the preferably replaceable impact section 14 on the operator-side end following 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 extinguishing lance 10 in order to direct it into an object to be extinguished to drive.
  • the free end of the extinguishing lance 10 is designed as a preferably likewise exchangeable and particularly hardened tip 15 .
  • a base part 35 and an extension piece 35' of the tubular holding part can be seen in a schematic side view in a vertical longitudinal section.
  • the extension piece 35' is tubular.
  • One end includes a threaded bolt which protrudes approximately halfway out of the extension piece 35', and the other end has a threaded bore for a threaded bolt.
  • the extension pieces 35' can be screwed together via the threaded holes and the threaded bolts.
  • the base part 35 is tubular.
  • the end on the handle side is designed in a hemispherical shape for more comfortable handling.
  • the connector end includes a threaded bolt that protrudes approximately halfway out of the base portion 35 .
  • the base part 35 can be connected either directly to the mechanical coupling device or to one or more extension pieces 35' assembled together. This allows the length of the tubular holding part to be flexible.
  • the Figures 4a and 4b show the mechanical coupling device 32 from different views.
  • the mechanical coupling device 32 is formed here as a clamp. In other embodiments, not shown here, it is also possible to choose a clamp, a fork or a pair of pliers as the mechanical coupling device 32 .
  • the coupling device 32 designed as a clamp consists of two halves 32', 32", which are C-shaped here.
  • Half 32' includes both ends 32a', 32b' and half 32" includes both ends 32a", 32b ".
  • the ends 32a′ and 32a′′ and the ends 32b′ and 32b′′ are opposite one another, which later also essentially corresponds to the operating phase of the extinguishing arrangement.
  • the clamp is typically (not shown here) placed around the outer circumference of the tubular extinguishing section of the extinguishing lance or the area of the holding section with the handle part of the extinguishing lance.
  • the opposite ends 32a', 32a" and 32b', 32b" of the C-shaped halves are then brought closer together via a clamping device 33a, 33b .
  • the clamp is pulled together and the tubular extinguishing section clamped.
  • the clamping devices 33a, 33b comprise a hinge 34a, by which the ends 32a' and 32a" are firmly connected to one another and at the ends 32b' and 32b" there is an internal thread for a clamping screw 34b, by means of which the clamping device 33a, 33b can then be tightened.
  • the halves 32', 32" each comprise an internal thread in which the tubular holding part of the position holder can be fastened.
  • the clamping screw 34b is secured against loss (especially in confusing and hectic situations) and the ends 32b' and 32b" are additionally secured against falling apart by means of a safety chain 34c.
  • the safety chain 34c is connected to the clamping screw 34b and the end 32b".
  • metal rings can be attached to the clamping screw 34b and in the area of the end 32b", which have eyelets into which the safety chain 34c can be hung.
  • the length of the safety chain 34c can be selected so that the clamping screw 34b connected to it is as long as possible is close to the internal thread provided for the clamping screw 34b and the clamping screw 34b can be easily inserted into the internal thread.
  • the safety chain 34c can have a length between 50 and 100 mm. The safety chain 34c can also be easily implemented and operated intuitively.
  • the figure 5 shows the individual parts of the clamping screw 34b in a schematic side view, as they appear in the mechanical coupling device Figure 4a can be used.
  • the clamping screw 34b consists of a threaded bushing 34b' with an internal thread, a threaded bolt 34b", a threaded pin 34b′′′ and a screw handle which acts as a star handle 34b ⁇ is formed and has an internal thread below the handle area.
  • the clamping screw 34b is specially made for the clamping device Figure 4a suitable because operation is easy and intuitive and the individual, interconnected components are not easily lost.
EP22169231.2A 2021-04-28 2022-04-21 Lance d'extinction linéaire pourvue de support de position destinée à la lutte contre l'incendie en cas d'objets électriquement chargés Pending EP4082631A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202021102269.8U DE202021102269U1 (de) 2021-04-28 2021-04-28 E-Löschlanze mit Positionshalter zur Brandbekämpfung bei elektrisch geladenen Objekten

Publications (1)

Publication Number Publication Date
EP4082631A1 true EP4082631A1 (fr) 2022-11-02

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EP22169231.2A Pending EP4082631A1 (fr) 2021-04-28 2022-04-21 Lance d'extinction linéaire pourvue de support de position destinée à la lutte contre l'incendie en cas d'objets électriquement chargés

Country Status (3)

Country Link
EP (1) EP4082631A1 (fr)
KR (1) KR20220148117A (fr)
DE (1) DE202021102269U1 (fr)

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* Cited by examiner, † Cited by third party
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EP4162984A1 (fr) * 2021-10-11 2023-04-12 Sp/f 28. juni 2000 Système, environnement de stationnement de véhicule et procédé pour éteindre un incendie dans un véhicule électrique

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DE202020102574U1 (de) 2020-05-07 2020-05-28 Murer-Feuerschutz Gmbh Verbesserte E-Löschlanze
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KR20220148117A (ko) 2022-11-04
DE202021102269U1 (de) 2021-05-14

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