EP4104908A1 - Lance d'extinction - Google Patents

Lance d'extinction Download PDF

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Publication number
EP4104908A1
EP4104908A1 EP22179077.7A EP22179077A EP4104908A1 EP 4104908 A1 EP4104908 A1 EP 4104908A1 EP 22179077 A EP22179077 A EP 22179077A EP 4104908 A1 EP4104908 A1 EP 4104908A1
Authority
EP
European Patent Office
Prior art keywords
piston
extinguishing
unit
extinguishing agent
penetrating
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
EP22179077.7A
Other languages
German (de)
English (en)
Inventor
Markus Elsner
Heinrich STADER
Wolfgang SCHLATZER
Georg GRIESHOFER
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.)
AVL List GmbH
Original Assignee
AVL List 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 AVL List GmbH filed Critical AVL List GmbH
Publication of EP4104908A1 publication Critical patent/EP4104908A1/fr
Pending legal-status Critical Current

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Classifications

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

Definitions

  • the invention relates to an extinguishing lance for firefighting with a fastening unit for attaching the extinguishing lance to a wall, with a penetrating unit consisting of a piston and a blade for penetrating the wall, the penetrating unit being displaceable in a cylinder along a main direction of movement between a starting position and an end position and the penetrating unit with the piston and the blade can be brought into the end position for penetrating the wall, in which the penetrating unit is arranged at least partially beyond a penetrating plane, seen from the cylinder.
  • Fire lances are for example from the WO 2020/206482 A1 famous.
  • a fastening unit is provided which is used for connection to the wall which the extinguishing lance has penetrated.
  • extinguishing lances are, for example, from the EP 3 045 210 A1 , the U.S. 4,625,808 and the U.S. 5,839,664 famous.
  • a spike is provided, for example, which can be pushed through the wall in order to distribute extinguishing agent beyond the wall.
  • penetrating units which carry the respective mandrel, have channels for extinguishing agents, which are distributed into the environment beyond the wall via openings in the mandrel or the penetrating unit.
  • these penetration units and/or mandrels are designed to be long in order to be able to provide sufficient openings for a sufficient transport quantity of extinguishing agent per time. Due to the flow of extinguishing agent, the extinguishing lance can be unintentionally removed from the wall if there is insufficient holding power.
  • a fire is basically extinguished by removing heat, removing combustible material, interrupting the air supply or by interfering with the chemical reaction by reducing the readiness to react or interfering with the mixing ratio of the reactants.
  • extinguishing lances are moved along a direction of movement by means of an extinguishing agent or a propellant and with the help of the extinguishing agent or the propellant, a penetrating unit can be passed through a wall.
  • the object of the present invention is to establish a device and a method in which more reliable operation of an extinguishing lance is ensured in a simple manner.
  • the piston delimits a chamber in the cylinder, which is designed to be flow-connected via a connection to an opening in the piston, the opening flow-connecting the penetration unit and an extinguishing agent supply line to one another in the end position, with the chamber is filled with extinguishing agent and the extinguishing agent acts on the piston in such a way that the penetration unit is held with the piston essentially in the end position.
  • extinguishing agents Both water and an emulsion of water and an additive with various effects are conceivable as extinguishing agents.
  • extinguishing agents based on liquid nitrogen for example, are also conceivable.
  • An extinguishing lance is understood here to mean an extinguishing device that is designed for introducing extinguishing agent after it has passed through a wall.
  • the movement along a main direction of movement describes the movement along a vector which is aligned along the longitudinal axis of the cylinder and which is oriented from a starting position to an end position.
  • the starting position and the end position mark the end points of the displacement of the piston and the penetration unit.
  • a direction of movement along the longitudinal axis of the cylinder is to be understood as the main direction of movement within the meaning of the invention.
  • the flow connection between the penetration unit and the extinguishing agent supply line in the end position is to be understood as an opening in the piston within the meaning of the invention.
  • the opening which can be formed, for example, by a channel or several channels or one or several bores or a combination thereof, is always present, but it is flow-connected to the extinguishing agent supply line only in the area around the end position. In the ones shown This is achieved by the groove in the piston, which overlaps with the extinguishing agent supply line when the piston is in the end position area.
  • connection between the chamber and the extinguishing agent supply line can be implemented particularly easily if a non-return fitting is provided in the connection between the chamber and the opening in the piston, with this non-return fitting advantageously opening in the direction of the chamber and thus preventing an outflow from the chamber.
  • This non-return fitting is preferably designed as a non-return valve or as a non-return flap. This allows extinguishing agent to flow into the chamber, but the propellant cannot flow in the direction of the extinguishing agent supply line and into the destination of the extinguishing agent. Since, for example, compressed air can be provided as the propellant, it is thus ensured that the compressed air does not come into contact with the source of the fire and, in the worst case, supplies the fire with additional oxygen for a short time.
  • the destination of the extinguishing agent is understood here as the destination for the introduction of the extinguishing agent in order to extinguish a fire or for cooling.
  • tubular is to be understood as meaning a shape which encloses a channel or a conduit along a longitudinal axis of the penetration unit remote from the piston.
  • the blade is integral with the plunger to form a penetrating unit.
  • the longitudinal axis of the penetrating unit corresponds in its direction to the axis of rotation of the cylinder and coincides with it in this embodiment, since the cylinder, blade, piston and penetrating unit are each arranged with a circular cross-sectional area and are arranged concentrically to one another.
  • the cross-sectional area is oriented normal to the longitudinal axis or the axis of rotation.
  • At least one propellant supply line is flow-connected to the cylinder for introducing propellant along the main direction of movement, with the flow connection being arranged between the propellant supply line and the cylinder.
  • the propellant flows from a propellant source to the chamber and piston via the propellant supply line and moves the piston along the main direction of movement in the cylinder by the pressure of the propellant.
  • Propellant source is understood here to be a propellant container, such as an oxygen cylinder or a compressed air container.
  • Flow connection means here a channel or a chamber through which the propellant can flow without significant obstacles.
  • a special design provides that the chamber has an additional non-return fitting, for example a non-return valve, opposite the propellant supply line, which prevents the backflow of the Prevents propellant from the chamber in the propellant supply line.
  • a controllable valve such as a solenoid valve, can also be used.
  • the above-mentioned object is also achieved by a method for firefighting, with an inventive extinguishing lance specified above, in which a blade of a penetrating unit is moved with a piston of the extinguishing lance from a starting position to an end position, with the blade in the end position passing through a wall cuts like a housing wall and extinguishing agent is transported through the penetration unit into the space beyond the wall seen from the extinguishing lance, whereby in the end position extinguishing agent flows along a connection in the piston into a chamber, is held in the chamber by a non-return fitting and whereby through the Extinguishing agent a force acts on the piston, the force being formed by a hydraulic pressure of the extinguishing agent on the piston and acting against a recoil force from the extinguishing agent delivery and the piston is held substantially in the end position.
  • the blade itself is typically around 70mm in diameter within manufacturing tolerances and can of course be adjusted according to the thickness and material of the wall to be penetrated.
  • the level of penetration is understood to be the level that the penetrating unit or a defined part of the penetrating unit must cross in order to be able to penetrate the wall. As a rule, this plane of penetration will be at the level of and parallel to a connection surface of the fastening unit for connection to the wall. However, if the wall is raised or lowered, the plane of penetration may be above or below the joint surface, or at an angle to it.
  • the piston of the penetration unit is subjected to a pressure of more than 35 bar by the propellant and is thereby moved.
  • the extinguishing agent can also be used as a propellant.
  • the extinguishing agent is introduced at the propellant connection and flows via the extinguishing agent connection into the penetrating unit when the penetrating unit is in its end position. This can be controlled, for example, via solenoid valves.
  • a fastening unit for the extinguishing lance is necessary, since otherwise, when the penetrating unit moves toward a wall in the main direction of movement, the rest of the extinguishing lance is only displaced relative to the wall to be penetrated. Due to the danger emanating from battery fires, it is not advisable to entrust a user, for example an emergency worker, with holding the extinguishing lance opposite the wall. Instead, a fastening unit is provided that takes over this function and holds the extinguishing lance in a fixed position relative to the wall.
  • the connection between the fastening unit and the wall can be made in a wide variety of ways, for example by gluing, flanging, clamping or bayonet locks.
  • the extinguishing lance preferably has at least one fixing column which is connected to the fastening unit.
  • the extinguishing lance particularly preferably has four fixing columns which are particularly preferably arranged evenly around the penetration unit.
  • the at least one locating pillar has two ends, the first end being connected, preferably pivotally, to the mounting unit and the second end being supported against or connected to a fixed part of the vehicle.
  • a body part, a side wall or the roof of the vehicle can be understood as a fixed part of the vehicle, for example.
  • the second end of the retention column may be supported against or connected to another member suitable to support the force necessary to move the penetrating unit to its final position.
  • these fixing columns are at least partially telescopic.
  • Flanging, gluing and bayonet fittings are particularly advantageous for test bench applications, since the fastest possible cooling and/or extinguishing must be ensured here in regular operation and advantageously only the wall of the respective battery has to be pierced. But even on vehicles, an ideal position for extinguishing and cooling can be marked in this way by a connection for the extinguishing lance.
  • the fastening unit 2 has a flange part 201 which is tightly connected to a cylinder jacket 202 of a cylinder 200 .
  • the flange part 201 has a connecting surface 203 which is designed to be connected to a wall 4 of a housing 8 in a sealing manner.
  • the cylinder 200 extends normal to the connecting surface 203.
  • the cylinder jacket 202 has a supply opening 204 for an extinguishing agent supply line 101.
  • An access opening 205 leads from the cylinder 200 through the flange part 201.
  • the penetrating unit 3 is moved in the cylinder 200 along its axis of rotation and along a main direction of movement 5.
  • the axis of rotation of the cylinder 200 and the main direction of movement 5 are identical in their direction.
  • the orientation of the main direction of movement 5 describes the movement of the penetration unit 3 from a starting position to an end position.
  • the movement counter to the main direction of movement 5 in the same direction describes the movement from the end position to the starting position of the penetrating unit 3.
  • the penetrating unit 3 is moved through the access opening 205 when moving along the main direction of movement 5 to the wall 4 and through the wall 4.
  • the extinguishing lance 1 is connected to the wall 4, a space is formed in the cylinder 200 of the extinguishing lance 1, which can be supplied with extinguishing agent using the extinguishing agent supply line 101.
  • the penetration unit 3 is shown in the starting position. This is the position in which the penetrating unit 3 was moved furthest against the main direction of movement 5 . It rests against a closure plate 209 of the fastening unit 2 .
  • the entire penetration unit 3 is preferably arranged in the cylinder 200 and can be held in the starting position by magnets, for example.
  • the penetrating unit 3 has a piston 301 and a blade 303 located thereon.
  • the piston 301 comprises a distribution chamber 310 which is open radially outwards towards the cylinder jacket 202 and is flow-connected via an opening 304 to a channel 305 inside the penetration unit 3 .
  • the opening 304 is designed as a bore.
  • a fixing opening for fixing the blade 303 can be provided.
  • the blade 303 can be fixed axially against displacement in the main direction of movement 5 in this opening, for example with a cotter pin or a bolt.
  • the blade 303 can also be screwed directly into the piston 301 .
  • the distribution space 310 is delimited in the main direction of movement 5 by parts of the piston 301 adjoining the cylinder jacket 202 .
  • a propellant opening 400 is made in the closure plate 209, which is connected to a propellant supply line 401 which, for example, carries compressed air as the propellant.
  • the propellant pushes the piston 301 along the main direction of movement 5 towards the end position.
  • the cylinder jacket 202 has one or more vent openings 215. Through these, the compressed air or another propellant can escape downstream of the cylinder 200 when the penetrating unit 3 is driven into the end position by the propellant.
  • the ventilation openings 215 are arranged downstream of the supply opening 204 and are not flow-connected to the distribution space 310 in the end position. In the end position, the piston 301 closes the ventilation openings 215.
  • Downstream within the meaning of the invention is to be understood as meaning the flow direction of the propellant from the propellant supply line 401 along the main direction of movement 5 . This corresponds to the flow movement from the start position to the end position of the penetrating unit 3. Upstream is to be understood in the opposite direction.
  • the supply opening 204 in flow communication with the distribution space 310 and the extinguishing agent can be transported from the extinguishing agent supply line 101 via the inside of the blade 303, the channel 305, beyond the wall 4.
  • the piston 301 If propellant - preferably with excess pressure, for example at over 35 bar - introduced when the penetration unit 3 is in the starting position, the piston 301 is pushed by the pressure of the propellant along the main direction of movement 5 and towards an end position - see 2 - pressed. The piston 301 moves along the cylinder 200 and forms a chamber 206 in the cylinder 200 in the end position. The extinguishing agent cannot flow past the piston 301 and accelerates it in the direction of the flange section 201.
  • the penetration unit 3 is shown in the end position.
  • the piston 301 of the penetrating unit 3 is in contact with the flange part 201 or a stop of the fastening unit 2, which prevents further movement in the direction of the main movement direction 5.
  • the penetrating unit 3 has, for penetrating the wall 4 downstream of the piston 301, the blade 303, which here is tubular.
  • the blade 303 has a cylindrical, axially closed side wall through which the elongated channel 305 in the interior of the blade 303 results.
  • the blade 303 which is suitable for penetrating the wall 4 , is arranged on the side of the penetrating unit 3 facing away from the piston 301 .
  • the side wall of the blade 303 either has a plurality of openings 304 or the blade 303 opens out, as in FIG 1 and 2 shown in the bore of the piston 301.
  • the extinguishing agent supply line 101 is flow-connected via the supply opening 204 to the distribution space 310 and further to the openings 304 and further to the channel 305.
  • the penetration unit 3 is moved by a propellant along the cylinder 200 from the starting position in the main direction of movement 5 to the end position and penetrates the wall 4 with the blade 303. If the piston 301 is now in the end position, extinguishing agent can be injected via the Extinguishing agent supply line 101 flow into the piston 301.
  • connection V for flow connection is arranged between the chamber 206 formed in this way and the channel 305 .
  • the piston 301 has a check fitting 320 in the connection V, which is designed here as a check valve, for example.
  • This check valve 320 opens for the flow of extinguishing agent from the opening 304 towards the chamber 206.
  • the check valve 320 When the propellant flows in via the propellant opening 400, the check valve 320 is closed. If, in the end position or in an area around the end position, in which the extinguishing agent line 101 and the opening 304 are flow-connected via the distribution chamber 310, extinguishing agent flows into the opening 304, the non-return valve 320 opens in the connection V in the direction of the chamber 206.
  • the piston 301 also has two seals 308 here, which seal off the distribution space 310 in the direction of the chamber 206 and are beneficial for guiding the piston 301 .
  • the extinguishing agent thus flows mainly via the channel 305 into an area beyond the penetration level 6 and via the connection V into the chamber 206, at least until the chamber 206 is filled with extinguishing agent and the extinguishing agent due to the non-return fitting 320 in the chamber 206 is held.
  • Flow into chamber 206 exerts a force F on piston 301 since the extinguishant is essentially incompressible, as is acceptable for liquids for viewing.
  • the propellant in chamber 206 escapes, for example, through leaks or vent openings 215.
  • the force F can be increased if a non-return fitting is also arranged in the closure plate 209, which blocks the propellant line 401 for flow out of the chamber 206.
  • the non-return fitting can also be arranged closer to the propellant container 402 .
  • FIG. 3 shows a schematic view of a use of the extinguishing lance according to the invention.
  • the arrangement has a housing 8, such as a battery housing of a battery-operated vehicle with two or more batteries 102 arranged therein, an extinguishing lance 1, an extinguishing agent tank 9 connected via an extinguishing agent supply line 101 and a control unit 10, which controls a valve 103 of the extinguishing agent supply line 101.
  • the control unit 10 controls a valve 403 in a propellant supply line 401 which connects a propellant container 402 to the propellant opening 400 .
  • valve 403 in the propellant line 401 is opened. This is before valve 403 opens the penetration unit 3 in the starting position and the wall 4 of the housing 8 intact.
  • the valve 403 is opened, the wall 4 is penetrated by the penetrating unit 3 .
  • the valve 403 is closed again via the control unit 10 and the valve 103 in the extinguishing agent line 101 is opened and the extinguishing agent is introduced into the housing 8 and the battery is cooled and the fire is contained or prevented and at the same time the penetration unit 302 is held in the housing 8.
  • FIG 4 and figure 5 show a penetrating unit 3 of the extinguishing lance 1 according to the invention.
  • the penetrating unit 3 has a blade 303 and a piston 301 firmly connected thereto.
  • An opening 304 for extinguishing agent is provided in the piston 301 .
  • This opening 304 starts from the distribution space 310 formed by the piston 301 and the cylinder 200 (not shown in these figures).
  • the piston 301 has a working surface A, which is arranged on the side facing away from the blade 303 .
  • the pressure of the propellant on the contact surface A moves the penetrating unit 3 along the main direction of movement 5 in the direction of the wall 4 and through the wall 4 .
  • the extinguishing agent flows through the opening 304 and penetrates through the blade 303 to the destination under the piston 301 in the vertical direction of movement.
  • the extinguishing agent flows upwards via the non-return valve 320 into the chamber 206, which ends in the direction of the blade 303 with the attack surface A.
  • the force F acts in the direction of the blade 303 and in the direction of the wall 4, which represents the liquid pressure of the extinguishing agent in the chamber 206 on the attack surface A.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
EP22179077.7A 2021-06-16 2022-06-15 Lance d'extinction Pending EP4104908A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50488/2021A AT524843B1 (de) 2021-06-16 2021-06-16 Löschlanze

Publications (1)

Publication Number Publication Date
EP4104908A1 true EP4104908A1 (fr) 2022-12-21

Family

ID=82067628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22179077.7A Pending EP4104908A1 (fr) 2021-06-16 2022-06-15 Lance d'extinction

Country Status (2)

Country Link
EP (1) EP4104908A1 (fr)
AT (1) AT524843B1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625808A (en) 1984-11-21 1986-12-02 Lockheed Corporation Device for coupling fire extinguishers to closed-off compartments
JPS6274379A (ja) * 1985-09-27 1987-04-06 トリニテイ工業株式会社 ダクト内消火設備とその消火器
US5839664A (en) 1996-07-31 1998-11-24 Crash Rescue Equipment Service, Inc, Fluid discharge nozzle assembly
US20060219416A1 (en) * 2005-03-15 2006-10-05 Fore Robert J Pneumatic puncture device for aircraft fire suppression systems
EP3045210A1 (fr) 2007-04-12 2016-07-20 Rosenbauer International AG Dispositif d'utilisation pare-feu
WO2020206482A1 (fr) 2019-04-11 2020-10-15 Avl List Gmbh Dispositif d'extinction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7611075B2 (en) * 2005-08-10 2009-11-03 Relyea Robert G Extensible aerial boom having two independently operated fluid nozzles
CN202724526U (zh) * 2012-07-30 2013-02-13 四川海川消防设备有限公司 液控冲击喷射装置
KR102031240B1 (ko) * 2018-01-26 2019-10-11 주식회사 에버다임 화재 진압용 피어싱 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625808A (en) 1984-11-21 1986-12-02 Lockheed Corporation Device for coupling fire extinguishers to closed-off compartments
JPS6274379A (ja) * 1985-09-27 1987-04-06 トリニテイ工業株式会社 ダクト内消火設備とその消火器
US5839664A (en) 1996-07-31 1998-11-24 Crash Rescue Equipment Service, Inc, Fluid discharge nozzle assembly
US20060219416A1 (en) * 2005-03-15 2006-10-05 Fore Robert J Pneumatic puncture device for aircraft fire suppression systems
EP3045210A1 (fr) 2007-04-12 2016-07-20 Rosenbauer International AG Dispositif d'utilisation pare-feu
WO2020206482A1 (fr) 2019-04-11 2020-10-15 Avl List Gmbh Dispositif d'extinction

Also Published As

Publication number Publication date
AT524843B1 (de) 2022-10-15
AT524843A4 (de) 2022-10-15

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