EP0638335A1 - Agent extincteur de déflagration et procédé de son utilisation - Google Patents

Agent extincteur de déflagration et procédé de son utilisation Download PDF

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Publication number
EP0638335A1
EP0638335A1 EP94305374A EP94305374A EP0638335A1 EP 0638335 A1 EP0638335 A1 EP 0638335A1 EP 94305374 A EP94305374 A EP 94305374A EP 94305374 A EP94305374 A EP 94305374A EP 0638335 A1 EP0638335 A1 EP 0638335A1
Authority
EP
European Patent Office
Prior art keywords
deflagration
particles
material comprises
suppression agent
comprises particles
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Withdrawn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
EP94305374A
Other languages
German (de)
English (en)
Inventor
Joseph A. Senecal
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.)
Kidde Technologies Inc
Original Assignee
Fenwal Safety Systems Inc
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 Fenwal Safety Systems Inc filed Critical Fenwal Safety Systems Inc
Publication of EP0638335A1 publication Critical patent/EP0638335A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0007—Solid extinguishing substances
    • A62D1/0014—Powders; Granules

Definitions

  • This invention relates generally to a suppression agent, and more particularly, to a powdery suppression agent for effectively extinguishing a flame front of a developing deflagration.
  • the invention is a deflagration suppression agent consisting of a dry powdery material composed of nonflammable particles each providing a surface area capable of rapidly absorbing heat and thereby cooling a deflagration reaction zone, and wherein at least 90% of the particles have a mean diameter of less than 20 microns. Effective suppression of a deflagration is provided by the very small particles which enhance the extinguishing function per unit mass of material.
  • 90% of the particles have a mean diameter less than 5 microns. Suppression effectiveness is enhanced further by a reduction in particle size.
  • the invention also encompasses a method for the suppression of a deflagration and includes the steps of: determining a deflagration reaction zone; filling a container having a discharge opening with a dry powdery material composed of nonflammable particles, at least 90% of the particles having a mean diameter less than 20 microns; pressuring the container with a gas; disposing the container in a position that directs the discharge opening toward the reaction zone; detecting a flame front of a developing deflagration in the reaction zone; and releasing the dry powdery material and gas through the discharge opening and into the reaction zone. Release of the very small particles into the reaction zone quickly extinguishes the detected flame front to terminate a developing deflagration.
  • the suppression agents are used in deflagration suppression systems employing high rate discharge (HRD) extinguishers.
  • HRD high rate discharge
  • extinguishers include highly directional discharge openings closed either by quick acting valves or explosively activated frangible closures.
  • the extinguishers are filled with the dry powdery agent and then pressurized with a suitable gas such as nitrogen or gases such as carbon dioxide or tryfloromethane which can themselves contribute to enhanced suppression efficiency.
  • the extinguisher After being charged with a dry powdery suppression agent and pressurized gas, the extinguisher is mounted in a position that directs it's discharge opening toward a previously determined deflagration reaction zone. Typically such zones are located in enclosures that process materials capable of providing mixtures that can support a deflagration.
  • the deflagration reaction zone usually will be within a few feet of the extinguisher discharge opening so as to render the relatively low density and "throw" capability of the VSP agent inconsequential.
  • the extinguisher Upon detection of a flame front of a developing deflagration by a suitable detector, the extinguisher is activated to release the dry powdery agent and gas through the discharge opening and into the reaction zone wherein the VSPs rapidly absorb heat to cool the reaction zone to a temperature below that required to support the propagation of a flame front and resulting in suppression.
  • Suitable deflagration suppression systems for use with the VSP agents of the invention are disclosed, for example, in U.S. Patent No. 4,487,266 and U.S. Patent Application Serial No. 06/344,531.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Silicon Compounds (AREA)
EP94305374A 1993-08-02 1994-07-20 Agent extincteur de déflagration et procédé de son utilisation Withdrawn EP0638335A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US100395 1987-09-24
US10039593A 1993-08-02 1993-08-02

Publications (1)

Publication Number Publication Date
EP0638335A1 true EP0638335A1 (fr) 1995-02-15

Family

ID=22279536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94305374A Withdrawn EP0638335A1 (fr) 1993-08-02 1994-07-20 Agent extincteur de déflagration et procédé de son utilisation

Country Status (1)

Country Link
EP (1) EP0638335A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2309640A (en) * 1996-02-05 1997-08-06 Atomic Energy Authority Uk Fire suppressant powder
CN113044844A (zh) * 2020-09-16 2021-06-29 常州熠光智能科技有限公司 用于硅粉混合物的惰性剂及其制备方法和应用方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH238766A (de) * 1944-03-27 1945-08-15 Creutz & Co Natriumbicarbonat-Trockenfeuerlöschmittel.
FR1203536A (fr) * 1957-02-15 1960-01-19 Total Kommanditgesellschaft Produit d'extinction contre l'incendie
DE1171752B (de) * 1962-05-09 1964-06-04 Solvay Mit Feuerloeschschaeumen vertraegliches Feuerloeschpulver
FR2126207A1 (en) * 1971-02-26 1972-10-06 Solvay Alkali metal-contng fire extinguishing powders
US4008170A (en) * 1975-11-28 1977-02-15 The United States Of America As Represented By The Secretary Of The Army Dry water
JPS5869584A (ja) * 1981-10-21 1983-04-25 株式会社アスク 金属火災用消火剤
SU1079256A1 (ru) * 1982-04-02 1984-03-15 Всесоюзный научно-исследовательский институт техники безопасности в химической промышленности Способ подавлени взрыва взрывоопасных смесей
EP0282193A2 (fr) * 1987-03-11 1988-09-14 Imperial Chemical Industries Plc Système de suppression d'explosion et composition à utiliser à cet effet
US4909328A (en) * 1987-12-29 1990-03-20 Lorino/Dechant Enterprises, Inc. Fire extinguisher composition and apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH238766A (de) * 1944-03-27 1945-08-15 Creutz & Co Natriumbicarbonat-Trockenfeuerlöschmittel.
FR1203536A (fr) * 1957-02-15 1960-01-19 Total Kommanditgesellschaft Produit d'extinction contre l'incendie
DE1171752B (de) * 1962-05-09 1964-06-04 Solvay Mit Feuerloeschschaeumen vertraegliches Feuerloeschpulver
FR2126207A1 (en) * 1971-02-26 1972-10-06 Solvay Alkali metal-contng fire extinguishing powders
US4008170A (en) * 1975-11-28 1977-02-15 The United States Of America As Represented By The Secretary Of The Army Dry water
JPS5869584A (ja) * 1981-10-21 1983-04-25 株式会社アスク 金属火災用消火剤
SU1079256A1 (ru) * 1982-04-02 1984-03-15 Всесоюзный научно-исследовательский институт техники безопасности в химической промышленности Способ подавлени взрыва взрывоопасных смесей
EP0282193A2 (fr) * 1987-03-11 1988-09-14 Imperial Chemical Industries Plc Système de suppression d'explosion et composition à utiliser à cet effet
US4909328A (en) * 1987-12-29 1990-03-20 Lorino/Dechant Enterprises, Inc. Fire extinguisher composition and apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8322, Derwent World Patents Index; Class E31, AN 83-53059K/22 *
DATABASE WPI Section Ch Week 8446, Derwent World Patents Index; Class E31, AN 84-286998/46 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2309640A (en) * 1996-02-05 1997-08-06 Atomic Energy Authority Uk Fire suppressant powder
GB2309640B (en) * 1996-02-05 1999-04-28 Atomic Energy Authority Uk Fire suppressant powder
CN113044844A (zh) * 2020-09-16 2021-06-29 常州熠光智能科技有限公司 用于硅粉混合物的惰性剂及其制备方法和应用方法
CN113044844B (zh) * 2020-09-16 2024-03-19 常州熠光智能科技有限公司 用于硅粉混合物的惰性剂及其制备方法和应用方法

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