EP0238475A1 - Appareil extincteur de feux - Google Patents

Appareil extincteur de feux Download PDF

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Publication number
EP0238475A1
EP0238475A1 EP87890028A EP87890028A EP0238475A1 EP 0238475 A1 EP0238475 A1 EP 0238475A1 EP 87890028 A EP87890028 A EP 87890028A EP 87890028 A EP87890028 A EP 87890028A EP 0238475 A1 EP0238475 A1 EP 0238475A1
Authority
EP
European Patent Office
Prior art keywords
oil
boiler
fire
transformer
nitrogen
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.)
Withdrawn
Application number
EP87890028A
Other languages
German (de)
English (en)
Inventor
Christian Dipl.-Ing Jagob
Darioush Dipl.-Ing Vafaie
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.)
Andritz Hydro GmbH Austria
Original Assignee
Andritz Hydro GmbH Austria
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 Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria
Publication of EP0238475A1 publication Critical patent/EP0238475A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling

Definitions

  • the invention relates to a device for extinguishing a fire for a boiler which is filled with a combustible medium, in particular for an oil transformer, wherein a storage container filled with inert gas, in particular nitrogen, is provided, which is connected to the boiler at the bottom.
  • combustion is a complex chemical reaction in which liquid or solid fuels are converted into gas or vapors under the action of heat, which in turn undergo a chemical reaction with the release of heat.
  • a heat wave develops on the evaporation front, which slowly progresses into the interior of the oil volume.
  • the average spreading speed is between 30 - 45 cm / H.
  • the rate of propagation is between 10 - 30 cm / h.
  • the main cause of the outbreak of transformer fires is damage to the bushing and secondly, the extent of the damage is significantly increased by the burning oil leaking due to the oil volume in the expansion vessel.
  • the main danger of overflowing the burning oil is the gradual charring of the seals, which can lead to an uncontrollable leakage of the oil and the spreading of the fire into the active part after a relatively short time (between l0 - 30 minutes after the fire broke out) .
  • the object of the invention is therefore to provide a device of the type mentioned at the beginning with which the secondary damage shown above can be avoided on the one hand and which on the other hand is also characterized by a simple structure.
  • the device according to the invention is characterized in that perforated pipes, channels or the like are arranged in the bottom region of the boiler, via which the nitrogen can be blown into the boiler with an overpressure for uniform floating of the medium.
  • the first time it is possible for the first time to shorten the fire duration by about two thirds.
  • the hot zone is therefore suppressed.
  • the temperature of the evaporation surface is thus reduced to a value close to that of the temperature of the cool medium.
  • the resulting reduction in the amount of evaporation either leads to a sharp reduction in the flame intensity or completely extinguishes the fire.
  • the device according to the invention takes advantage of the physical conditions shown above.
  • the oil in the boiler is used to cool the oil surface brought to the combustion temperature by an arc fault (the flash point of transformer oils for insulation purposes is between l35 - l65 °).
  • the cooling is achieved by bringing the oil from the lower, cooler zones (the average transformer temperature at full load is 80 ° C as standard) to the surface in order to displace the oil layer (min. Flash point) heated by the arcing fault.
  • dry nitrogen according to the invention is introduced under excess pressure. Before the gas is blown in, the oil supply from the expansion vessel must be cut off and the oil level lowered to a level between the lower edge of the transformer cover and the upper edge of the active part.
  • Another advantage of the invention is that this device is independent of water, temperature and climate, and is also conceivably suitable for the interior due to the extremely small space requirement.
  • the pipes, channels or the like are parts of the boiler construction.
  • the outlay for investing this invention is kept extremely low.
  • the injection system can be included in the design of the transformer tank.
  • the oil transformer l consists of the boiler 2, its winding 3, the oil coolers 4, the oil expansion tank 5 and the bushings 6. Furthermore, a storage container 7 is provided for the inert gas, in particular nitrogen. This reservoir 7 is connected to the boiler 2 via lines 8.
  • the boiler 2 has a line 9 in the upper region, which is used to lower the oil level.
  • Valves, not specified, are provided in lines 8, 9, which are controlled centrally in the event of a fire.
  • the lines 8, which conduct the inert gas from the storage container 7 into the boiler 2, are connected to this in the bottom area.
  • 2 perforated pipes 10 are arranged in the boiler. These pipes 10 could also be included in the boiler construction. It is particularly important that these pipes 10 are evenly distributed over the floor, so that a metered, uniform mixing of the oil is achieved in the event of a fire.
  • the amount of gas introduced which is evenly metered in the bottom region of the boiler 2, mixes the small amount of hot oil with the large amount of cool oil such that the hot zone is suppressed.
  • the temperature of the oil surface is thus reduced to a value close to that of the cool oil. The result is a complete extinction of the fire.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Housings And Mounting Of Transformers (AREA)
EP87890028A 1986-02-20 1987-02-13 Appareil extincteur de feux Withdrawn EP0238475A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT44186A AT386527B (de) 1986-02-20 1986-02-20 Einrichtung zum loeschen eines brandes
AT441/86 1986-02-20

Publications (1)

Publication Number Publication Date
EP0238475A1 true EP0238475A1 (fr) 1987-09-23

Family

ID=3490693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87890028A Withdrawn EP0238475A1 (fr) 1986-02-20 1987-02-13 Appareil extincteur de feux

Country Status (4)

Country Link
EP (1) EP0238475A1 (fr)
JP (1) JPS62233172A (fr)
AT (1) AT386527B (fr)
FI (1) FI870717A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0750321A1 (fr) * 1995-06-19 1996-12-27 Jürgen Bastian Dispositif permettant l'évacuation d'un liquide lors d'un feu (plus particulièrement un liquide électroisolant)
WO1997012379A1 (fr) * 1995-09-28 1997-04-03 Philippe Magnier Procede et dispositif de prevention contre l'explosion et l'incendie des transformateurs electriques
WO2007057916A3 (fr) * 2005-11-16 2007-07-12 Ctr Mfg Ind Ltd Procede et dispositif de prevention et de protection d'un transformateur electrique contre l'explosion et le feu
US7317598B2 (en) 2005-06-29 2008-01-08 Philippe Magnier Electric transformer explosion prevention device
CZ300916B6 (cs) * 1999-03-22 2009-09-09 Zarízení pro zabránení explozi elektrického transformátoru
US7777994B2 (en) 2006-10-27 2010-08-17 Philippe Magnier Device for preventing the explosion of an element of an electrical transformer
CN106390335A (zh) * 2016-08-31 2017-02-15 常州市达克富尔环保科技有限公司 具有双排油系统的排油注氮灭火装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104436477B (zh) * 2014-12-01 2017-09-08 国家电网公司 变电站大型含油设备综合消防系统及方法
CN106267627B (zh) * 2016-10-20 2022-01-25 中国能源建设集团云南省电力设计院有限公司 一种变压器爆炸火灾灭火系统
CN106422122B (zh) * 2016-10-31 2022-01-25 中国能源建设集团云南省电力设计院有限公司 一种变压器爆炸火灾泡沫-注氮灭火系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191410098A (en) * 1913-04-26 1915-07-08 Hans Berndt Improvements in or relating to Extinguishing Flames in Tanks for Inflammable Liquids.
US2449270A (en) * 1944-09-29 1948-09-14 Charles E Bennett Apparatus for protecting inflammable liquids against fire
US3486562A (en) * 1968-03-08 1969-12-30 David K Goodloe Fire prevention,detection and extinguishing system
DE2554224A1 (de) * 1975-12-03 1977-06-08 Kugel Kg Gustav Vorrichtung an schraenken, behaeltern oder raeumen zur aufnahme von wertvollen gegenstaenden, wie akten, mikrofilme, datenspeicher, computereinrichtungen o.dgl.
GB1479432A (en) * 1974-06-11 1977-07-13 Lisnave Estaleiros Navais De L Safety device for the compensation of leaks or losses of inert gas pressure contained inside vessel tanks

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899099A (en) * 1973-06-21 1975-08-12 Tank Sapp Uk Ltd Inert gas system and method for tankers
US3893514A (en) * 1973-11-23 1975-07-08 Us Navy Suppression of fires in confined spaces by pressurization
DE2608670C2 (de) * 1976-03-03 1978-10-12 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Verfahren und Einrichtung zum Löschen von brennenden, sich durch Verdampfen aus Flüssiggas bildenden Gasen
CA1152857A (fr) * 1982-11-01 1983-08-30 Walter G. Miller Systeme extincteur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191410098A (en) * 1913-04-26 1915-07-08 Hans Berndt Improvements in or relating to Extinguishing Flames in Tanks for Inflammable Liquids.
US2449270A (en) * 1944-09-29 1948-09-14 Charles E Bennett Apparatus for protecting inflammable liquids against fire
US3486562A (en) * 1968-03-08 1969-12-30 David K Goodloe Fire prevention,detection and extinguishing system
GB1479432A (en) * 1974-06-11 1977-07-13 Lisnave Estaleiros Navais De L Safety device for the compensation of leaks or losses of inert gas pressure contained inside vessel tanks
DE2554224A1 (de) * 1975-12-03 1977-06-08 Kugel Kg Gustav Vorrichtung an schraenken, behaeltern oder raeumen zur aufnahme von wertvollen gegenstaenden, wie akten, mikrofilme, datenspeicher, computereinrichtungen o.dgl.

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0750321A1 (fr) * 1995-06-19 1996-12-27 Jürgen Bastian Dispositif permettant l'évacuation d'un liquide lors d'un feu (plus particulièrement un liquide électroisolant)
WO1997012379A1 (fr) * 1995-09-28 1997-04-03 Philippe Magnier Procede et dispositif de prevention contre l'explosion et l'incendie des transformateurs electriques
FR2739486A1 (fr) * 1995-09-28 1997-04-04 Magnier Philippe Procede et dispositif de protection contre l'explosion et l'incendie des transformateurs electriques
CZ300916B6 (cs) * 1999-03-22 2009-09-09 Zarízení pro zabránení explozi elektrického transformátoru
CN102768896A (zh) * 2005-06-29 2012-11-07 菲利普·马尼耶 用于防止变压器爆炸的装置
US7317598B2 (en) 2005-06-29 2008-01-08 Philippe Magnier Electric transformer explosion prevention device
CN102768896B (zh) * 2005-06-29 2015-04-01 菲利普·马尼耶 用于防止变压器爆炸的装置
WO2007057916A3 (fr) * 2005-11-16 2007-07-12 Ctr Mfg Ind Ltd Procede et dispositif de prevention et de protection d'un transformateur electrique contre l'explosion et le feu
US7869167B2 (en) 2005-11-16 2011-01-11 Ctr Manufacturing Industries Limited Method and device for prevention and protection of electrical transformer against explosion and fire
KR101021348B1 (ko) * 2005-11-16 2011-03-14 시티알 매뉴팩쳐링 인더스트리즈 리미티드 폭발과 화재를 예방하고, 이에 대비하여 전기 변압기를 보호하기 위한 방법 및 장치
CN101268531B (zh) * 2005-11-16 2011-05-25 Ctr工业制造股份有限公司 用以防护电力变压器免于爆炸及起火的方法及装置
AU2006314089B2 (en) * 2005-11-16 2009-07-16 Ctr Manufacturing Industries Limited Method and device for prevention and protection of electrical transformer against explosion and fire
US8264804B2 (en) 2006-10-27 2012-09-11 Philippe Magnier Device for preventing the explosion of an element of an electrical transformer
US7777994B2 (en) 2006-10-27 2010-08-17 Philippe Magnier Device for preventing the explosion of an element of an electrical transformer
CN106390335A (zh) * 2016-08-31 2017-02-15 常州市达克富尔环保科技有限公司 具有双排油系统的排油注氮灭火装置

Also Published As

Publication number Publication date
ATA44186A (de) 1988-02-15
AT386527B (de) 1988-09-12
JPS62233172A (ja) 1987-10-13
FI870717A (fi) 1987-08-21
FI870717A0 (fi) 1987-02-20

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Inventor name: VAFAIE, DARIOUSH, DIPL.-ING

Inventor name: JAGOB, CHRISTIAN, DIPL.-ING