EP2402919A1 - Extinction de feu intelligente - Google Patents

Extinction de feu intelligente Download PDF

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Publication number
EP2402919A1
EP2402919A1 EP10167901A EP10167901A EP2402919A1 EP 2402919 A1 EP2402919 A1 EP 2402919A1 EP 10167901 A EP10167901 A EP 10167901A EP 10167901 A EP10167901 A EP 10167901A EP 2402919 A1 EP2402919 A1 EP 2402919A1
Authority
EP
European Patent Office
Prior art keywords
sensor
region
processing means
raised temperature
nozzle
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Withdrawn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
EP10167901A
Other languages
German (de)
English (en)
Inventor
Simon David Gill
Timothy James Roberts
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.)
Baker Hughes International Treasury Services Ltd
Original Assignee
Vetco Gray Controls Ltd
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 Vetco Gray Controls Ltd filed Critical Vetco Gray Controls Ltd
Priority to EP10167901A priority Critical patent/EP2402919A1/fr
Publication of EP2402919A1 publication Critical patent/EP2402919A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions

Definitions

  • This invention relates to fire extinguishing equipment.
  • a preferred fire extinguishing system is to use installed sprinkler systems. These comprise a fire detection means which detects the presence of a fire in a location, for example by smoke detection, or detection of an area of raised temperature. Once a fire has been so detected, an activation signal is produced, which acts to turn on a number of sprinklers at the location, the sprinklers expelling a quantity of water to the location.
  • Known sprinklers typically include a number of showerhead type nozzles, which jettison water substantially evenly over respective areas. While this may be effective at extinguishing the fire, such a sprinkler system will dowse or flood an area without discrimination, which may result in the loss of much expensive or valuable equipment, for example computers, files or the like.
  • This aim is achieved by intelligently activating fire extinguishing equipment so that a fire-extinguishing substance is aimed at the fire, rather than indiscriminately.
  • fire extinguishing equipment comprising:
  • passive infrared (PIR) sensors are electronic devices comprising pyroelectric sensor material that are responsive to thermal infrared radiation emitted from objects within the sensor's field of view. Since the infrared radiation emitted by an object is temperature dependent, the PIR sensor output can be used both to identify areas of high temperature within the field of view, and to measure the temperature of objects within that field of view (as long as the sensor is suitably calibrated).
  • fire extinguishing equipment may find application within the hydrocarbon extraction industry, and as such may be installed at oil platforms, installation portable buildings (e.g. "Portakabin” RTM) and suchlike.
  • the invention may be used either as a replacement or as a back-up to existing sprinkler systems.
  • FIG. 1 An embodiment of the invention is schematically shown in Fig. 1 , where fire extinguishing equipment in accordance with the present invention is installed in a room 1 having walls 2 and a ceiling 3, in order to monitor and extinguish fires within the room volume.
  • a plurality of passive infrared (PIR) sensors 4, 5 are located on the walls 2 and ceiling 3 respectively.
  • a plurality of directional nozzles 6, 7 are located on the walls 2 and ceiling 3 respectively.
  • nozzles 6, 7 are connected via a pipe system 12 to a reservoir 11 containing a fire-extinguishing substance, e.g. water, installed in ceiling 3, to receive a water supply therefrom in use.
  • Fig. 1 shows a cross-sectional, and therefore two-dimensional, view of room 1.
  • the sensors 4, 5 and nozzles 6, 7 would typically be distributed approximately regularly about the extent of the room 1.
  • the nozzles and sensors are provided with power supplies (not shown), for example batteries located at each nozzle / sensor or from an external power source.
  • Sensors 4, 5 are connected to a processing means, e.g. a computer 8, via network 9.
  • Nozzles 6, 7 are also connected to processing means 8, via network 10.
  • Processing means 8 stores information relating to the "sprayable region" of each nozzle 6, 7, in other words, the region which could be sprayed with water if that nozzle were activated.
  • Sensors 4, 5 may operate in a variety of modes. For example, they may be set to trigger when an area with a temperature exceeding a threshold value is detected within their field of view. In this case, the sensors must be calibrated before use. Alternatively, the sensors may be arranged to trigger if an region of raised temperature relative to its surroundings is detected within their field of view.
  • any sensors 4, 5 whose field of view includes that area 11 are triggered, and output signals are sent via network 9 to processing means 8. These signals include a component identifying the particular sensor outputting the signal.
  • the processing means 8 is adapted to process the signals received via network 9. In particular, the processing means 8 identifies the sensors which have sent the signals from the identification components of the signals. The processing means 8 then correlates the identified sensors to determine an approximate location of the region of raised temperature.
  • the processing means 8 then matches the determined location of the region of raised temperature with the sprayable areas of nozzles 6, 7, and sends activation signals to the matched nozzles via network 10. For example, if processing means 8 determines that two nozzles have respective sprayable regions that match the region of raised temperature, then it sends activation signals to those two nozzles via network 10, thus causing those two nozzles to activate and spray water at the respective sprayable regions. Since the sprayable regions and the region of raised temperature should coincide due to the matching process performed by the processing means 8, the region of raised temperature will receive a spray of water from the activated nozzles.
  • Sensors 4, 5 may continue to check the status of the region of raised temperature. If they determine that the temperature within this region has fallen to a level which is considered “safe”, then the change in their output signals will communicate this to processing means 8. Accordingly, processing means 8 may then send a "cease” command to nozzles 6, 7 to stop the flow of water therethrough.
  • the region of raised temperature may be more accurately located by combining information received from sensors. For example, if a number of sensors are triggered to produce output signals, then it is apparent that the region of raised temperature must lie within the volume where the fields of view overlap or coincide. This calculation may be performed by the processing means 8. Alternatively, the various combinations may be predetermined, and the processing means may effect a look-up to determine the location of the region of raised temperature. For example, when setting up the equipment, it may be determined that if signals are received from a particular three sensors, then the region of raised temperature will be within a certain known volume of the room.
  • Fig. 1 shows hard-wiring between the processing means 8 and sensors and nozzles, a wireless configuration, for example using Wi-fi (RTM), Bluetooth (RTM) or the like.
  • RTM Wi-fi
  • RTM Bluetooth
  • each nozzle may be adjustable.
  • the processing means could cause a nozzle to eject the fire-extinguishing substance at a particular velocity, in order to maximise the amount of substance that reaches the region of raised temperature.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
EP10167901A 2010-06-30 2010-06-30 Extinction de feu intelligente Withdrawn EP2402919A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10167901A EP2402919A1 (fr) 2010-06-30 2010-06-30 Extinction de feu intelligente

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10167901A EP2402919A1 (fr) 2010-06-30 2010-06-30 Extinction de feu intelligente

Publications (1)

Publication Number Publication Date
EP2402919A1 true EP2402919A1 (fr) 2012-01-04

Family

ID=42932039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10167901A Withdrawn EP2402919A1 (fr) 2010-06-30 2010-06-30 Extinction de feu intelligente

Country Status (1)

Country Link
EP (1) EP2402919A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9956443B1 (en) 2014-11-03 2018-05-01 Tyco Fire Products Lp Attic sprinkler systems
WO2020021079A1 (fr) * 2018-07-27 2020-01-30 Minimax Viking Research & Development Gmbh Système de lutte contre les incendies permettant d'éteindre un feu dans une pièce d'un bâtiment, procédé associé et utilisation d'un capteur matriciel en son sein
DE102020101705A1 (de) 2020-01-24 2021-07-29 Minimax Viking Research & Development Gmbh Verfahren zur Konfiguration einer Brandlokalisierungsvorrichtung und Verfahren zum Betreiben eines Brandbekämpfungssystems
GB2624371A (en) * 2022-11-08 2024-05-22 Advante Ltd Portable building unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990518A (en) * 1974-05-14 1976-11-09 Siemens Aktiengesellschaft Automatic fire alarm and extinguisher device
GB2169421A (en) * 1984-12-27 1986-07-09 Hochiki Co System and method for detecting flames
US4909329A (en) * 1986-08-27 1990-03-20 Kabushiki Kaisha Kockiki Corp. Fire supervising system and extinguishing target determining system
US5486811A (en) * 1994-02-09 1996-01-23 The United States Of America As Represented By The Secretary Of The Navy Fire detection and extinguishment system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990518A (en) * 1974-05-14 1976-11-09 Siemens Aktiengesellschaft Automatic fire alarm and extinguisher device
GB2169421A (en) * 1984-12-27 1986-07-09 Hochiki Co System and method for detecting flames
US4909329A (en) * 1986-08-27 1990-03-20 Kabushiki Kaisha Kockiki Corp. Fire supervising system and extinguishing target determining system
US5486811A (en) * 1994-02-09 1996-01-23 The United States Of America As Represented By The Secretary Of The Navy Fire detection and extinguishment system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9956443B1 (en) 2014-11-03 2018-05-01 Tyco Fire Products Lp Attic sprinkler systems
WO2020021079A1 (fr) * 2018-07-27 2020-01-30 Minimax Viking Research & Development Gmbh Système de lutte contre les incendies permettant d'éteindre un feu dans une pièce d'un bâtiment, procédé associé et utilisation d'un capteur matriciel en son sein
DE102020101705A1 (de) 2020-01-24 2021-07-29 Minimax Viking Research & Development Gmbh Verfahren zur Konfiguration einer Brandlokalisierungsvorrichtung und Verfahren zum Betreiben eines Brandbekämpfungssystems
GB2624371A (en) * 2022-11-08 2024-05-22 Advante Ltd Portable building unit

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