EP1043045A2 - Installation d'extinction d'incendie - Google Patents

Installation d'extinction d'incendie Download PDF

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Publication number
EP1043045A2
EP1043045A2 EP00106176A EP00106176A EP1043045A2 EP 1043045 A2 EP1043045 A2 EP 1043045A2 EP 00106176 A EP00106176 A EP 00106176A EP 00106176 A EP00106176 A EP 00106176A EP 1043045 A2 EP1043045 A2 EP 1043045A2
Authority
EP
European Patent Office
Prior art keywords
line
gas
container
extinguishing
extinguishing agent
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
EP00106176A
Other languages
German (de)
English (en)
Other versions
EP1043045B1 (fr
EP1043045A3 (fr
Inventor
Guido Schroeder
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.)
Total Walther GmbH Feuerschutz und Sicherheit
Original Assignee
Total Walther GmbH Feuerschutz und Sicherheit
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 Total Walther GmbH Feuerschutz und Sicherheit filed Critical Total Walther GmbH Feuerschutz und Sicherheit
Publication of EP1043045A2 publication Critical patent/EP1043045A2/fr
Publication of EP1043045A3 publication Critical patent/EP1043045A3/fr
Application granted granted Critical
Publication of EP1043045B1 publication Critical patent/EP1043045B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide

Definitions

  • the invention relates to a method for operating a fire extinguishing system with cryogenic carbon dioxide (CO 2 ) as an extinguishing agent, in particular a low-pressure CO 2 system (approx. 20 bar), in which the CO 2 is in the liquid phase at a temperature of -18 ° C to 22 ° C, in particular -20 ° c stored in an insulated container and kept at this temperature by means of a cooling unit and from there via a distributor line with a range valve to an extinguishing line with extinguishing nozzles, as well as a fire extinguishing system working according to the method.
  • CO 2 cryogenic carbon dioxide
  • Such fire extinguishing systems are so-called Kotika plants (Ko hlenklad ti ef ka lt).
  • CO 2 is an odorless and colorless gas, an electrical non-conductor and is neither corrosive, polluting nor corrosive.
  • By blowing carbon dioxide into a room the oxygen content of the room atmosphere can be reduced.
  • the fire reaction is smothered by displacing the atmospheric oxygen.
  • KOTIKA systems are suitable for Fighting fires in paint production and processing, food manufacturing, in switchgear, Data centers, rolling mills or similar
  • the extinguishing system can have any suitable and recognized fire detection and extinguishing system control are triggered. So can for example with a pneumatic-electric or with the KOTIKA system with a pneumatic excitation system Glass barrel exciter and additionally via a manual trigger can be controlled. The glass barrel in a glass barrel stimulator bursts when it reaches its trigger temperature, or through Pressing the manual release relieves the control line and thus delivers a pneumatic control signal.
  • CO 2 gas from the gas cushion of the KOTIKA system serves as the control medium.
  • the KOTIKA container stands on a scale that checks the contents of the container. If carbon dioxide is lost, a contact is triggered to indicate a loss.
  • the CO 2 storage temperature of approx. -20 ° C is maintained by the cooling unit and the insulation of the container. This keeps the pressure of the charged liquid carbonic acid at approx. 20 bar. With this technique, carbonic acid can be stored efficiently in large quantities. Such systems are economical from a CO 2 storage volume of 2000 kg.
  • a KOTIKA container can supply several extinguishing areas via area valves.
  • Carbon dioxide has a life-threatening effect in an extinguishing concentration, so special precautions for personal protection must be provided for room concentrations greater than 5% Vol CO 2 .
  • a gas phase forms in the upper area of the extinguishing agent container and in the distribution line.
  • the amount of gas from the distribution line must be routed through the lines to the extinguishing nozzles.
  • a CO 2 gas is first discharged from the extinguishing nozzles. This gas cannot be extinguished.
  • the extinguishable liquid gas is only applied to the source of the fire from the extinguishing nozzles after the gas phase has been completely discharged.
  • the CO 2 gas phase flows through the pipe network to the extinguishing nozzles over a time factor of approx. 10 s.
  • This time factor must be shortened, especially for property protection, when using CO 2 low-pressure fire extinguishing systems.
  • this is essential for the object to be protected in the sense of quick and effective fire extinguishing. Due to the fire-specific influencing factors and the associated possible damage, shorter gas phases for a successful fire extinguishing must be realized.
  • the invention has for its object the erasable Liquid gas phase faster through the extinguishing nozzles to the source of the fire to apply.
  • the time factor for the gas phase should be ⁇ 5 s.
  • This object is achieved in that the extinguishing agent drawn off from the liquid phase of the container is protected against cold radiation within the distributor line from the container to the area valve, and thus the extinguishing agent is kept liquid in the distributor line, and in that the CO 2 which forms in the distributor line rises upwards -Gas drawn off there and returned to the gas phase of the container.
  • extinguishable liquid CO 2 is present in the area of the area valve, so that and in the event of fire, an extinguishable agent is immediately applied to the source of the fire via the extinguishing nozzles.
  • This method can be used particularly advantageously if the extinguishing agent container is at the same height or higher than the area valve.
  • a part of the liquid becomes from the liquid phase of the container Extinguished extinguishing agent and into the lower one Distribution line routed and protected against cold radiation, then it will be avoided with certainty that the Fills the distribution line with gas.
  • liquid extinguishing agent is forced into circulation by means of a CO 2 pump.
  • the forced circulation of the liquid CO 2 ensures at all times that no gas phase forms in the distribution line. However, if a gas phase forms, it can be subtracted.
  • the requirement for the extinguishing effectiveness of the system to start is ⁇ 5 s.
  • CO 2 is conveyed by means of two or more CO 2 pumps which are connected in parallel and can be shut off separately. This creates absolute operational security. With this measure, maintenance or servicing can be carried out on one of the two pumps during operation. In addition, if one pump fails, operation with one pump can be maintained.
  • Another measure according to the invention is seen in the fact that the fire extinguishing system is operated in a constant pressure system with gas compensation and the recirculated CO 2 gas is additionally cooled.
  • a classic low-pressure CO 2 system is hereby equipped with a gas compensation system and separate cooling unit for liquid storage up to the area valve.
  • the gas compensation system with the return to the extinguishing agent container also prevents the gas phase in the distribution line.
  • the two cooling units can be controlled via a cascade connection, with both cooling units being controlled in normal operation by means of a pressostat. In a classic low-pressure CO 2 system, this enables the entire extinguishing system to be operated independently. This procedure can be used particularly advantageously if the extinguishing agent container is higher than the area valve.
  • cryogenic carbon dioxide (CO 2 ) as an extinguishing agent, which is stored in an insulated container connected to a cooling unit, from which a distribution line provided with an immersion pipe, a shut-off valve and an area valve leads to an extinguishing line with extinguishing nozzles, and the Container with a filling line for the extinguishing agent and a return gas line is proposed according to the invention for performing the method that the distribution line from the extinguishing agent container to the area valve is provided with insulation and a gas return line is connected to the highest point of the distribution line, the the other end is led into the gas phase of the extinguishing agent container.
  • CO 2 cryogenic carbon dioxide
  • a particularly advantageous device is seen in that a pocket tube from the liquid phase of the extinguishing agent container guided and connected to a bypass line, the free end led into the distribution line and with a Insulation is provided. At the highest point the Distribution line a gas return line with shut-off valve connected and with one in the gas phase of the Extinguishing agent container guided extraction tube to be connected.
  • the invention proposes that in the Gas return line a heat exchanger is installed.
  • One (or more) CO 2 gas pump is installed in the bypass line for forced circulation.
  • Cryogenic carbon dioxide (CO 2 ) is stored as an extinguishing agent in an extinguishing agent container 1 with insulation 2.
  • a temperature of the extinguishing agent of approximately -20 ° C. is maintained by a cooling unit 3 with a connecting line 4 to the extinguishing agent container 1.
  • a vertical immersion tube 6 is let into the extinguishing agent container 1, to which a distributor line 5 provided with insulation 21 with a shut-off valve 7 is connected.
  • the other end of the distributor line 5 is connected to an extinguishing line 8 with extinguishing nozzles 10 and is provided with an area valve 9.
  • the valves 7 and 9 can also be isolated.
  • the extinguishing agent is filled into the extinguishing agent container 1 via a filling line 11 with a filling valve 12. Furthermore, a gas return line 13 with a shut-off valve 14 is provided. 16 with a safety valve in a safety line 15 is designated. A control gas line, not shown, is led to an alarm valve of a mechanical delay device with an extinguishing valve.
  • the quenching line 8 is assigned a pickup line 19 with a pickup 20, for example a glass bottle pickup, which is led to a manual release (not shown) and to the control line 37 with a control center (not shown).
  • a horizontal dip tube 6a is provided on that the distribution line 5 is connected.
  • the embodiment is the gas return line in two Split lines 17a and 17b, between which a Heat exchanger 32 is installed. Between the range valve 9 and the sub-line 17a is provided with a control line 37, in which a control valve 38 is installed. It is also between the heat exchanger 32 and the distribution line 5 another Return line 39 is provided. Forms in the partial line 17b a gas cushion 28a.
  • the bypass line is divided into two sub-lines 24a and 24b, between which two pump lines 35 and 36 running parallel to one another are provided, in each of which a CO 2 pump 33 and 34 is installed.
  • the pump lines 35, 36 and the pumps 33, 34 are surrounded by insulation 26 and are connected to the distributor line 5 in front of the area valve 9.
  • the prerequisite here is that the range valve 9 is lower lies as the extinguishing agent container 1.
  • the lockable Bypass line 24 connects the extinguishing agent container 1 and the Distribution line 5 to the area valve 9.
  • the bypass line 24 prevents the entire distribution line 5 fills with gas and therefore a delayed deletion is initiated.
  • a low-pressure CO 2 extinguishing system is equipped with a gas compensation system by means of a separate heat exchanger 32 for liquid storage.
  • the ascending gas phase 28a is returned with the heat exchanger 32 and returned to the distributor line 5 by means of the return line 39.
  • An equal pressure system is created via the partial line 17a and thus it is ensured that the boundary layers 30 and 30a are always at the same level.
  • the distribution line is completely filled with a liquid CO 2 extinguishing agent.
  • the process variants 1 to 3 can easily can be combined with each other or individually.

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)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Fire Alarms (AREA)
  • Cereal-Derived Products (AREA)
EP00106176A 1999-04-08 2000-03-21 Installation d'extinction d'incendie Expired - Lifetime EP1043045B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19915801A DE19915801A1 (de) 1999-04-08 1999-04-08 Feuerlöschanlage
DE19915801 1999-04-08

Publications (3)

Publication Number Publication Date
EP1043045A2 true EP1043045A2 (fr) 2000-10-11
EP1043045A3 EP1043045A3 (fr) 2001-08-08
EP1043045B1 EP1043045B1 (fr) 2004-12-15

Family

ID=7903856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00106176A Expired - Lifetime EP1043045B1 (fr) 1999-04-08 2000-03-21 Installation d'extinction d'incendie

Country Status (3)

Country Link
EP (1) EP1043045B1 (fr)
AT (1) ATE284735T1 (fr)
DE (2) DE19915801A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102451535A (zh) * 2010-10-25 2012-05-16 薛玉良 一种大型灭火装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106955439A (zh) * 2017-04-06 2017-07-18 南京信息职业技术学院 一种智能配电箱用主动喷射式二氧化碳灭火装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1708100C3 (de) * 1967-02-24 1976-01-08 Total Foerstner & Co, 6802 Ladenburg Verfahren zum Ausspülen des Leitungssystems einer Niederdruckkohlensäure-Feuerlöschvorrichtung nach einem LöschVorgang
US5850876A (en) * 1990-01-08 1998-12-22 Pyrozone Pty. Ltd. Apparatus and system for the storage and supply of liquid CO2 at low pressure for extinguishing of fires

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102451535A (zh) * 2010-10-25 2012-05-16 薛玉良 一种大型灭火装置

Also Published As

Publication number Publication date
DE50008930D1 (de) 2005-01-20
ATE284735T1 (de) 2005-01-15
EP1043045B1 (fr) 2004-12-15
DE19915801A1 (de) 2000-10-12
EP1043045A3 (fr) 2001-08-08

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