EP0885633B1 - Procédé et dispositif pour l'empêchement d'incendie - Google Patents

Procédé et dispositif pour l'empêchement d'incendie Download PDF

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Publication number
EP0885633B1
EP0885633B1 EP98110477A EP98110477A EP0885633B1 EP 0885633 B1 EP0885633 B1 EP 0885633B1 EP 98110477 A EP98110477 A EP 98110477A EP 98110477 A EP98110477 A EP 98110477A EP 0885633 B1 EP0885633 B1 EP 0885633B1
Authority
EP
European Patent Office
Prior art keywords
conveyor
spark
sparking
fire
pipeline
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.)
Expired - Lifetime
Application number
EP98110477A
Other languages
German (de)
English (en)
Other versions
EP0885633A2 (fr
EP0885633A3 (fr
Inventor
Manfred Tolle
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0885633A2 publication Critical patent/EP0885633A2/fr
Publication of EP0885633A3 publication Critical patent/EP0885633A3/fr
Application granted granted Critical
Publication of EP0885633B1 publication Critical patent/EP0885633B1/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
    • 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

Definitions

  • the invention relates to a method and a device for fire prevention according to the preamble of patent claim 1 and patent claim 4.
  • Sparks can cause fires and explosions in pneumatic transport systems and mechanical conveyor systems in which flammable bulk goods are transported.
  • the sparks are usually generated by a processing machine used or by material contamination. This results in loss of production, high damage to property or even endangering human life.
  • an extinguishing device is actuated which - downstream of the spark detector - injects an extinguishing agent, in particular a water mist, at a suitable point.
  • an extinguishing agent in particular a water mist
  • the spark passing through the extinguishing curtain is extinguished.
  • this can only be done if the monitored product is not destroyed by the deletion process. If it is For example, if it concerns grain flour, i.e. if a conveyor system is monitored in a grain mill, the consequences of such an extinguishing process would be catastrophic.
  • a so-called high-speed slide must be used, that is to say a closure element which shuts off the conveyor system sufficiently quickly before the extinguishing agent is sprayed in.
  • the timing or spatial arrangement must therefore meet certain conditions which prevent contamination of the non-retained material to be conveyed and thus of the subsequent plant equipment.
  • the invention has for its object to develop methods and apparatus of the type mentioned in such a way that safe fire prevention can be ensured in a simple and inexpensive manner.
  • An essential idea of the present invention is that a continuous delivery is interrupted at one point, so that the flow is divided into individual quantities, which in turn are conveyed separately from each other in a fire-safe manner. Afterwards, funding can be continued continuously.
  • This separation now makes it possible to stop the conveyance by simply holding on to the individual amount, even without great effort, as is the case with a quick-closing slide becomes. This can be done particularly easily by means of a rotary valve as is known per se.
  • the gas is preferably separated from the bulk material in individual quantities before the bulk material is divided, which is done for example by means of a cyclone.
  • the line with which the air is led from the cyclone to a filter must also be shut off, but the flight distance to be covered for a spark is considerably lengthened by its distance to be covered in the cyclone, so that the working speed of the slide does not have to be too high, which in turn makes it easier, more reliable and less expensive.
  • the rotary feeder that is preferably used is equipped, as usual, with a drive motor that determines the conveying speed of the rotary feeder.
  • a time period of about 0.5 to 1 s usually passes from the introduction of a quantity of product into a cell until it has been rotated further until the product can emerge from the cell again. In most cases it will therefore be sufficient to switch off the cell drive when a spark is detected in order to safely reach the barrier.
  • a brake is preferably provided, as is known in principle in any case in the case of geared motors. Such brakes work in such a way that when the motor is energized the brake opens and when the power supply is switched off the brake closes automatically (e.g. by spring force) and fixes the drive, which then ensures a particularly rapid stopping of the cellular wheel movement.
  • a spark detector 10 is provided in a conventional manner, which monitors the heat radiation within the pipeline 1.
  • a central controller 12 As soon as an abnormally hot zone, which represents a possible source of fire, flows past the spark detector ("falls by" in the arrangement according to FIG. 1), a corresponding signal is transmitted to a central controller 12 via a signal line 11. The latter then not only emits a warning signal via a warning device 13, but also shuts off the power supply to a motor 14 which drives a cellular wheel sluice 15.
  • the "dead time” which is customary in cellular wheel sluices that is to say the time from the entry of a product into a cell and its further conveyance to an exit area, is generally 0.5 to 1 s, ie it is relatively long. In any case, this time is long enough for the motor 14 (possibly with the stop the provided brake 16). No special effort is necessary.
  • a pressurized extinguishing agent (water) reservoir 17 is provided, which is connected via a valve 18 to spray devices 19, 19 ', which in the pipeline section 1, in which the source of the fire is located, and if necessary, inject the extinguishing agent into a cell of the rotary valve 15 facing the pipeline section 1.
  • the overall arrangement is designed in such a way that the cellular wheel lock 15 and the pipe section lying between the spark detector 10 and the cellular wheel lock can be easily cleared out in order to remove the product contaminated with extinguishing agent.
  • the product and the source of the fire can of course also be removed in order to carry out the extinguishing process at a suitable point.
  • the pipeline section between the spark detector 10 and the cellular wheel sluice 15, together with its contents can be separated from the entire pipeline.
  • the cellular wheel sluice 15 is designed in accordance with these requirements (easy removal of contaminated cell contents).
  • a bypass arrangement is provided (if necessary additionally) in broken lines, which in turn comprises a spark detector 10 ', extinguishing nozzles 19 ", 19"' and a cellular wheel sluice 15 ', so that after detection of a fire source by means of the spark detector 10 and stopping the cellular wheel sluice 15, the product flow can be diverted to the bypass arrangement while the product contaminated with extinguishing agent is removed, thereby ensuring less interruption in operation.
  • FIG. 2 differs from that according to FIG. 1 in that the product conveyed in the pipeline 1 is conveyed pneumatically and not in free fall (as in the arrangement according to FIG. 1).
  • a cyclone 20 is provided in front of the rotary valve 15, which separates the gas from the solid.
  • the separated gas runs through a further pipeline 21 to a filter 22, which separates any dusts that are carried along.
  • a slide 22 is provided, which is also controlled by the controller 12, specifically on a spark detection signal from the spark detector 10, as has already been explained above.
  • the slider 22 provided in the arrangement according to FIG. 2 does not have to be too fast, since the distance covered by a possible source of fire (sparks) is considerably extended by the cyclone 20. As a result, a longer reaction time or a slower operation of the slide 22 is permissible (similar to the cellular wheel sluice 15) without endangering operational safety. 2, however, the flow of solids is interrupted by the rotary valve 15.
  • FIG. 1 can of course also be used in the arrangement according to FIG. 2.
  • these would be the sufficiently simple accessibility of the interior of the cyclone 20 (or its contents), the provision of extinguishing devices (not shown separately in FIG. 2) or the interchangeability of pipe sections or cells in the cellular wheel lock 15.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • 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)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Safety Valves (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Control Of Conveyors (AREA)

Claims (10)

  1. Procédé de prévention des incendies, en particulier pour éliminer et/ou éteindre des foyers d'incendie, en particulier des étincelles lors du transport de produits en vrac soumis au risque d'incendie dans des dispositifs de transport, en particulier dans des canalisations, où lors de la reconnaissance d'une zone à température plus élevée, en particulier d'une étincelle dans un flux de transport par un dispositif de reconnaissance des étincelles, en particulier un dispositif de signalisation d'étincelles, en un premier emplacement, le flux de transport est interrompu en un deuxième emplacement situé en aval et l'étincelle est éliminée, caractérisé en ce que le flux de transport est subdivisé en quantités individuelles essentiellement déplacées de manière continue, lesquelles sont transportées sur une partie du trajet en étant séparées les unes des autres de manière à être protégées contre les incendies et lesquelles sont arrêtées en cas de reconnaissance d'une étincelle.
  2. Procédé selon la revendication 1, caractérisé en ce que lors d'un transport pneumatique à l'aide de gaz, en particulier d'air, le gaz est séparé des produits en vrac avant la subdivision des produits en vrac en quantités individuelles.
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'avec un flux de transport arrêté, un volume de transport se trouvant entre la reconnaissance des étincelles et la subdivision en quantités individuelles est refroidi, et est en particulier refroidi par amenée d'eau.
  4. Dispositif de prévention des incendies, en particulier pour éliminer et/ou éteindre des étincelles lors du transport de produits en vrac soumis au risque d'incendie dans des dispositifs de transport, en particulier dans des canalisations (1, 1'), comprenant :
    - un dispositif de signalisation d'étincelles (10) qui est monté dans/sur la canalisation (1, 1') et est réalisé de manière qu'un signal de reconnaissance soit émis en cas de reconnaissance dans le flux de transport d'une zone à température trop élevée, en particulier d'une étincelle ou d'un foyer d'incendie ou similaire ;
    - un dispositif d'arrêt (15) qui est monté en aval du dispositif de signalisation d'étincelles (10) dans la canalisation (1, 1') et est réalisé pour l'interruption du flux de transport par rapport au signal de reconnaissance ;
       caractérisé en ce que le dispositif d'arrêt (15) comprend un dispositif de transport, lequel est réalisé de manière que le flux de transport soit subdivisé en quantités individuelles déplacées de manière essentiellement continue, lesquelles sont transportées sur une partie du trajet en étant séparées les unes des autres de manière à être protégées contre les incendies, et lesquelles sont arrêtées en cas de reconnaissance d'une étincelle.
  5. Dispositif selon la revendication 4, caractérisé en ce que le dispositif de transport comprend une écluse à roue cellulaire (15).
  6. Dispositif selon la revendication 5, caractérisé en ce que l'écluse à roue cellulaire (15) comprend un mécanisme de commande freinable (14, 16).
  7. Dispositif selon la revendication 4, caractérisé en ce que le dispositif de transport (15) comprend un dispositif d'élimination des gaz en cas de transport pneumatique des produits en vrac, en particulier un séparateur à cyclone (20).
  8. Dispositif selon l'une des revendications 4 à 6, caractérisé par un dispositif de refroidissement, en particulier par un dispositif d'injection d'eau (17-19), qui est installé entre le dispositif de signalisation d'étincelles (10) et le dispositif d'arrêt (15) pour le refroidissement de l'étincelle et/ou du foyer d'incendie.
  9. Dispositif selon l'une des revendications 4 à 8, caractérisé en ce que la zone de transport, et en particulier la zone de la canalisation entre le dispositif de signalisation d'étincelles (10) et le dispositif d'arrêt (15), peut être ouverte pour inspecter et/ou en extraire son contenu.
  10. Dispositif selon l'une des revendications 4 à 9, caractérisé en ce que la partie de transport, et en particulier la partie de canalisation, est réalisée de manière échangeable, et peut de préférence être scellée à l'aide de vannes ou similaire en tant que container.
EP98110477A 1997-06-19 1998-06-08 Procédé et dispositif pour l'empêchement d'incendie Expired - Lifetime EP0885633B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19726096A DE19726096C1 (de) 1997-06-19 1997-06-19 Verfahren und Vorrichtung zur Brandverhinderung
DE19726096 1997-06-19

Publications (3)

Publication Number Publication Date
EP0885633A2 EP0885633A2 (fr) 1998-12-23
EP0885633A3 EP0885633A3 (fr) 2000-11-08
EP0885633B1 true EP0885633B1 (fr) 2004-12-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98110477A Expired - Lifetime EP0885633B1 (fr) 1997-06-19 1998-06-08 Procédé et dispositif pour l'empêchement d'incendie

Country Status (3)

Country Link
EP (1) EP0885633B1 (fr)
AT (1) ATE285822T1 (fr)
DE (2) DE19726096C1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20218136U1 (de) 2002-11-21 2003-03-06 Minimax Gmbh, 23843 Bad Oldesloe Funkenlöschanlage für bewegte staubförmige Partikel
DE10321438A1 (de) * 2003-05-12 2004-12-02 Klaus Buttler Absauganlage
CN109481881A (zh) * 2018-11-21 2019-03-19 汇乐因斯福环保安全研究院（苏州）有限公司 用于粉尘管道的火花探测及熄灭装置及火花探测熄灭方法
DE102024200825A1 (de) * 2024-01-30 2025-07-31 Coperion Gmbh Zellenradschleuse für Schüttgut und Schutzsystem mit einer derartigen Zellenradschleuse

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637473A (en) * 1986-01-16 1987-01-20 Kidde, Inc. Fire suppression system
DE4326072A1 (de) * 1993-08-04 1995-02-09 Ruhrgas Ag Vorrichtung zum automatischen Schließen einer Absperrarmatur
SE9303305L (sv) * 1993-10-08 1994-11-21 Firefly Ab Preventivt skyddssystem

Also Published As

Publication number Publication date
DE59812431D1 (de) 2005-02-03
DE19726096C1 (de) 1999-03-04
EP0885633A2 (fr) 1998-12-23
ATE285822T1 (de) 2005-01-15
EP0885633A3 (fr) 2000-11-08

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