EP1518587A1 - Fire-extinguishing equipment - Google Patents

Fire-extinguishing equipment Download PDF

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Publication number
EP1518587A1
EP1518587A1 EP04104508A EP04104508A EP1518587A1 EP 1518587 A1 EP1518587 A1 EP 1518587A1 EP 04104508 A EP04104508 A EP 04104508A EP 04104508 A EP04104508 A EP 04104508A EP 1518587 A1 EP1518587 A1 EP 1518587A1
Authority
EP
European Patent Office
Prior art keywords
quenching water
low pressure
pipe
water pipe
high pressure
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
EP04104508A
Other languages
German (de)
French (fr)
Other versions
EP1518587B1 (en
Inventor
Hans-Ulrich Walter
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.)
Iveco Magirus AG
Original Assignee
Iveco Magirus 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 Iveco Magirus AG filed Critical Iveco Magirus AG
Publication of EP1518587A1 publication Critical patent/EP1518587A1/en
Application granted granted Critical
Publication of EP1518587B1 publication Critical patent/EP1518587B1/en
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
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/02—Making of fire-extinguishing materials immediately before use of foam

Definitions

  • the invention refers to a fire-extinguishing equipment with a feeder pipe for quenching water, from which emerge at least one low pressure quenching water pipe and one high pressure quenching water pipe, with a low pressure pump in this low pressure quenching water pipe and a high pressure pump in this high pressure quenching water pipe, and with a mixing device for the introduction of foaming agent into both the extinguishing agent pipes.
  • modem extinguishing equipment enables the use of different extinguishing agents including low pressure quenching water and high pressure quenching water (approx. 40 bar).
  • Foaming agent can be added to the quenching water in both the low pressure as well as in the high pressure sectors. This foaming agent is fed into the low pressure quenching water and high pressure quenching water pipes with the aid of mixing units.
  • Such mixing units are comparatively large-scale and correspondingly expensive. On the one hand, they have to enable a relatively accurate dosage of the added foaming agent and, on the other hand, work against the pressure existing in the quenching water pipes.
  • the deriving problem of the present invention is to achieve a fire-extinguishing equipment of the above-mentioned type which allows the possibility, in a fire-extinguishing equipment with low pressure and high pressure sectors, of supplying foaming agent to both sectors in an economically and simple way.
  • an equipment of the above-mentioned type according to the invention is characterised in that a mixing unit for the controlled introduction of foaming agent is provided in the low pressure quenching water pipe and that a connecting pipe branches off from the low pressure quenching water pipe downstream of the mixing unit, which enters the high pressure pipe upstream of the high pressure pump.
  • This solution merely requires a mixing unit for the low pressure quenching water pipe.
  • the water-foaming agent mixture pre-mixed in the low pressure sector, is fed to the high pressure pump where it is brought up to the desired high pressure.
  • a separate mixing unit is thus not necessary for the high pressure sector.
  • the mixing unit preferably enters the low pressure quenching water pipe downstream of the low pressure pump.
  • the quenching water-foaming agent mixture is thus already under low pressure here.
  • the portion of the mixture branched-off to the high pressure sector is brought to high pressure by a high pressure pump.
  • the quenching water-foaming agent mixture downstream of the mixing unit can be controlled so that it either remains in the low pressure sector or is fed to the high pressure sector, or so that both systems can be operated simultaneously with pre-determined portions.
  • the only diagram is a schematic block diagram to illustrate the fire-extinguishing equipment according to the invention.
  • a feeder pipe for quenching water can be supplied by various sources.
  • a quenching water tank 12 situated inside the fire-fighting vehicle, a quenching water reservoir 14, situated external to the vehicle, from which water can be taken via a suction pipe 16, and variety of water sources, summarised by the term external supply 18, for example a hydrant.
  • the feeder pipe 10 there is a low pressure pump 20 which is driven by a motor 22.
  • the downstream pipe labelled 24 should be designated as LP- quenching water pipe 24.
  • This LP-quenching water pipe can branch out into various outlets, as indicated in the drawing.
  • an injection point 26 at which a foaming agent can be injected into the LP-quenching water if required.
  • the foaming agent is supplied from a foaming agent container 28 via a foaming agent pipe 30.
  • the foaming agent container is, as a rule, situated inside the fire-fighting vehicle.
  • the supply of foaming agent from the foaming agent container 28 can be released by opening a stop valve 32, situated in the foaming agent pipe 30.
  • a water-engine is situated in the low pressure quenching water pipe 24 which drives a foaming agent pump 38 via either an infinitely variable change-speed gear or a shaft 36. This enables an exact and controlled addition of the foaming agent which arrives at the injection point 26 via an injection pipe 40.
  • a three-way valve is situated in the LP-quenching water pipe 24 which can be adjusted so that the LP-quenching water either remains in the LP-quenching water pipe or is conveyed to a branching connecting pipe 44 which establishes a connection to a high pressure pump 46, situated in a HP-quenching water pipe 48.
  • the HP- quenching water pipe 48 branches off from the LP-quenching water pipe 24 downstream of the LP-pump 20.
  • a three-way valve 50 it joins the connecting pipe 44 which comes from the LP-quenching water pipe behind the injection point 26 and which permits the supply of a water-extinguishing agent mix.
  • the three-way valve 50 can be adjusted so that either pure water from LP-quenching water pipe 24 or a quenching water-foaming agent mixture from the connecting pipe 44 reaches the high pressure pump 46.
  • the high pressure pump is likewise driven by the motor 22 via an additional shaft 52.
  • the figure is to be seen as purely schematic.
  • the flushing pipe 54 denotes a flushing pipe in which is situated a stop valve.
  • the flushing pipe 54 runs between the LP-quenching water pipe 24 downstream of low pressure pump 20 and the foaming agent pipe 30. Flushing of the foaming agent pipe 30 can be initiated by opening the stop valve 56.

Landscapes

  • 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)
  • Fire-Extinguishing Compositions (AREA)
  • Fireproofing Substances (AREA)

Abstract

Fire-extinguishing equipment with a feeder pipe (10) for quenching water , from which emerge at least one low pressure quenching water pipe (24) and one high pressure quenching water pipe (48), with a low pressure pump (20) in this low pressure quenching water pipe (24) and a high pressure pump (46) in this high pressure quenching water pipe (48), and with mixing apparatus for the introduction of foaming agent into both the quenching water pipes (24,48), characterised in that a mixing unit (38) for the controlled introduction of foaming agent is provided in the low pressure quenching water pipe (24) and that a connecting pipe (44) branches off from the low pressure quenching water pipe (24) downstream of the mixing unit (38) which enters the high pressure pipe (48) upstream of the high pressure pump (46).

Description

  • The invention refers to a fire-extinguishing equipment with a feeder pipe for quenching water, from which emerge at least one low pressure quenching water pipe and one high pressure quenching water pipe, with a low pressure pump in this low pressure quenching water pipe and a high pressure pump in this high pressure quenching water pipe, and with a mixing device for the introduction of foaming agent into both the extinguishing agent pipes.
  • Depending on the factors existing at the scene of a fire, modem extinguishing equipment enables the use of different extinguishing agents including low pressure quenching water and high pressure quenching water (approx. 40 bar). Foaming agent can be added to the quenching water in both the low pressure as well as in the high pressure sectors. This foaming agent is fed into the low pressure quenching water and high pressure quenching water pipes with the aid of mixing units.
  • Such mixing units are comparatively large-scale and correspondingly expensive. On the one hand, they have to enable a relatively accurate dosage of the added foaming agent and, on the other hand, work against the pressure existing in the quenching water pipes.
  • The deriving problem of the present invention is to achieve a fire-extinguishing equipment of the above-mentioned type which allows the possibility, in a fire-extinguishing equipment with low pressure and high pressure sectors, of supplying foaming agent to both sectors in an economically and simple way.
  • In order to solve this problem, an equipment of the above-mentioned type according to the invention is characterised in that a mixing unit for the controlled introduction of foaming agent is provided in the low pressure quenching water pipe and that a connecting pipe branches off from the low pressure quenching water pipe downstream of the mixing unit, which enters the high pressure pipe upstream of the high pressure pump.
  • This solution merely requires a mixing unit for the low pressure quenching water pipe. For the high pressure sector, the water-foaming agent mixture, pre-mixed in the low pressure sector, is fed to the high pressure pump where it is brought up to the desired high pressure. A separate mixing unit is thus not necessary for the high pressure sector.
  • The mixing unit preferably enters the low pressure quenching water pipe downstream of the low pressure pump. The quenching water-foaming agent mixture is thus already under low pressure here. The portion of the mixture branched-off to the high pressure sector is brought to high pressure by a high pressure pump.
  • With the aid of a three-way valve, the quenching water-foaming agent mixture downstream of the mixing unit can be controlled so that it either remains in the low pressure sector or is fed to the high pressure sector, or so that both systems can be operated simultaneously with pre-determined portions.
  • The following explains in more detail, with the aid of the attached drawing and preferred embodiments of the invention.
  • The only diagram is a schematic block diagram to illustrate the fire-extinguishing equipment according to the invention.
  • A feeder pipe for quenching water, labelled 10, can be supplied by various sources. In the drawing are shown a quenching water tank 12, situated inside the fire-fighting vehicle, a quenching water reservoir 14, situated external to the vehicle, from which water can be taken via a suction pipe 16, and variety of water sources, summarised by the term external supply 18, for example a hydrant.
  • In the feeder pipe 10 there is a low pressure pump 20 which is driven by a motor 22. Starting from the low pressure pump 20, the downstream pipe labelled 24 should be designated as LP- quenching water pipe 24. This LP-quenching water pipe can branch out into various outlets, as indicated in the drawing.
  • Further along the LP-quenching water pipe there is an injection point 26, at which a foaming agent can be injected into the LP-quenching water if required. The foaming agent is supplied from a foaming agent container 28 via a foaming agent pipe 30. The foaming agent container is, as a rule, situated inside the fire-fighting vehicle. The supply of foaming agent from the foaming agent container 28 can be released by opening a stop valve 32, situated in the foaming agent pipe 30. A water-engine is situated in the low pressure quenching water pipe 24 which drives a foaming agent pump 38 via either an infinitely variable change-speed gear or a shaft 36. This enables an exact and controlled addition of the foaming agent which arrives at the injection point 26 via an injection pipe 40.
  • Downstream of the injection point 26, a three-way valve is situated in the LP-quenching water pipe 24 which can be adjusted so that the LP-quenching water either remains in the LP-quenching water pipe or is conveyed to a branching connecting pipe 44 which establishes a connection to a high pressure pump 46, situated in a HP-quenching water pipe 48. The HP- quenching water pipe 48 branches off from the LP-quenching water pipe 24 downstream of the LP-pump 20. In a three-way valve 50, it joins the connecting pipe 44 which comes from the LP-quenching water pipe behind the injection point 26 and which permits the supply of a water-extinguishing agent mix. The three-way valve 50 can be adjusted so that either pure water from LP-quenching water pipe 24 or a quenching water-foaming agent mixture from the connecting pipe 44 reaches the high pressure pump 46.
  • The high pressure pump is likewise driven by the motor 22 via an additional shaft 52. In this respect, the figure is to be seen as purely schematic.
  • 54 denotes a flushing pipe in which is situated a stop valve. The flushing pipe 54 runs between the LP-quenching water pipe 24 downstream of low pressure pump 20 and the foaming agent pipe 30. Flushing of the foaming agent pipe 30 can be initiated by opening the stop valve 56.

Claims (4)

  1. Fire-extinguishing equipment with a feeder pipe (10) for quenching water , from which emerge at least one low pressure quenching water pipe (24) and one high pressure quenching water pipe (48), with a low pressure pump (20) in this low pressure quenching water pipe (24) and a high pressure pump (46) in this high pressure quenching water pipe (48), and with a mixing unit for the introduction of foaming agent into both the quenching water pipes (24,48), characterised in that a mixing unit (38) for the controlled introduction of foaming agent is provided in the low pressure quenching water pipe (24) and that a connecting pipe (44) branches off from the low pressure quenching water pipe (24) downstream of the mixing unit (38) which enters the high pressure pipe (48) upstream of the high pressure pump (46).
  2. Fire-extinguishing equipment according to Claim 1, characterised in that the mixing unit (38) is provided in the low pressure quenching water pipe (24) downstream of the low pressure pump (20).
  3. Fire-extinguishing equipment according to Claim 1 or 2, characterised in that the connecting pipe (44) branches off from the low pressure quenching water pipe (24) downstream of the low pressure pump (20).
  4. Fire-extinguishing equipment according to one of the Claims 1 to 3, characterised in that the mixing unit (38) can be driven by a water-engine (34) situated in the low pressure quenching water pipe (24).
EP04104508A 2003-09-23 2004-09-17 Fire-extinguishing equipment Active EP1518587B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10343935A DE10343935A1 (en) 2003-09-23 2003-09-23 Fire fighting equipment
DE10343935 2003-09-23

Publications (2)

Publication Number Publication Date
EP1518587A1 true EP1518587A1 (en) 2005-03-30
EP1518587B1 EP1518587B1 (en) 2006-11-02

Family

ID=34177895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04104508A Active EP1518587B1 (en) 2003-09-23 2004-09-17 Fire-extinguishing equipment

Country Status (4)

Country Link
EP (1) EP1518587B1 (en)
AT (1) ATE344094T1 (en)
DE (2) DE10343935A1 (en)
ES (1) ES2279293T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2784733A1 (en) * 2019-03-28 2020-09-30 Martino Joaquin Gracia Fire extinguishing pump for high intensity fires and high temperatures (Machine-translation by Google Translate, not legally binding)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633042A1 (en) * 1993-07-08 1995-01-11 VOGT AG, Feuerwehrgeräte- und Fahrzeugbau Foam proportioning system for high pressure pumps
US5909775A (en) * 1997-09-10 1999-06-08 Grindley; Robert M. Dual chamber foam pump
EP1029560A2 (en) * 1999-02-18 2000-08-23 Schmitz GmbH Mobile pump unit for fire-fighting
EP1273321A2 (en) * 2001-07-02 2003-01-08 Schmitz GmbH Device for fire fighting with pressurised air foam

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633042A1 (en) * 1993-07-08 1995-01-11 VOGT AG, Feuerwehrgeräte- und Fahrzeugbau Foam proportioning system for high pressure pumps
US5909775A (en) * 1997-09-10 1999-06-08 Grindley; Robert M. Dual chamber foam pump
EP1029560A2 (en) * 1999-02-18 2000-08-23 Schmitz GmbH Mobile pump unit for fire-fighting
EP1273321A2 (en) * 2001-07-02 2003-01-08 Schmitz GmbH Device for fire fighting with pressurised air foam

Also Published As

Publication number Publication date
ATE344094T1 (en) 2006-11-15
DE10343935A1 (en) 2005-04-28
DE602004003009D1 (en) 2006-12-14
DE602004003009T2 (en) 2007-05-03
ES2279293T3 (en) 2007-08-16
EP1518587B1 (en) 2006-11-02

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