CA2668587A1 - Dual extinguishment fire suppression system using high velocity low pressure emitters - Google Patents

Dual extinguishment fire suppression system using high velocity low pressure emitters Download PDF

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Publication number
CA2668587A1
CA2668587A1 CA002668587A CA2668587A CA2668587A1 CA 2668587 A1 CA2668587 A1 CA 2668587A1 CA 002668587 A CA002668587 A CA 002668587A CA 2668587 A CA2668587 A CA 2668587A CA 2668587 A1 CA2668587 A1 CA 2668587A1
Authority
CA
Canada
Prior art keywords
extinguishing agent
liquid
gaseous
emitter
outlet
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
CA002668587A
Other languages
French (fr)
Other versions
CA2668587C (en
Inventor
William J. Reilly
Robert J. Ballard
Kevin J. Blease
Stephen R. Ide
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.)
Victaulic Co
Original Assignee
Victaulic Company
William J. Reilly
Robert J. Ballard
Kevin J. Blease
Stephen R. Ide
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 Victaulic Company, William J. Reilly, Robert J. Ballard, Kevin J. Blease, Stephen R. Ide filed Critical Victaulic Company
Publication of CA2668587A1 publication Critical patent/CA2668587A1/en
Application granted granted Critical
Publication of CA2668587C publication Critical patent/CA2668587C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/68—Details, e.g. of pipes or valve systems
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
    • A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/265—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being symmetrically deflected about the axis of the nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0853—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with one single gas jet and several jets constituted by a liquid or a mixture containing a liquid

Abstract

A fire suppression system is disclosed. The system includes a gaseous extinguishing agent and a liquid extinguishing agent. At least one emitter is in fluid communication with the liquid and gas. The emitter is used to establish a gas stream, atomize and entrain the liquid into the gas stream and discharge the resulting liquid-gas stream onto the fire. A method of operating the system is also disclosed. The method includes establishing a gas stream having first and second shock fronts using the emitter, atomizing and entraining the liquid with the gas at one of the two shock fronts to form a liquid-gas stream, and discharging the stream onto the fire. The method also includes creating a plurality of shock diamonds in the liquid-gas stream discharged from the emitter.

Claims (24)

1. A fire suppression system, comprising:
a gaseous extinguishing agent;
a liquid extinguishing agent;
at least one emitter for atomizing and entraining said liquid extinguishing agent in said gaseous extinguishing agent and discharging said gaseous and liquid extinguishing agents on a fire;
a gas conduit conducting said gaseous extinguishing agent to said emitter;
a piping network conducting said liquid extinguishing agent to said emitter;
a first valve in said gas conduit controlling pressure and flow rate of said gaseous extinguishing agent to said emitter;
a second valve in said piping network controlling pressure and flow rate of said liquid extinguishing agent to said emitter;
a pressure transducer measuring pressure within said gas conduit;
a fire detection device positioned proximate to said emitter; and a control system in communication with said first and second valves, said pressure transducer and said fire detection device, said control system receiving signals from said pressure transducer and said fire detection device and opening said valves in response to a signal indicative of a fire from said fire detection device, said control system actuating said first valve so as to maintain a predetermined pressure of said gaseous extinguishing agent within said gas conduit for operation of said emitter.
2. A system according to Claim 1, further comprising:
a plurality of compressed gas tanks comprising a source of pressurized gaseous extinguishing agent; and a high pressure manifold providing fluid communication between said compressed gas tanks and said gas conduit upstream of said first valve.
3. A system according to Claim 1, further comprising:
a plurality of said emitters distributed over a plurality of fire hazard zones; and a single compressed gas tank comprising a source of pressurized gaseous extinguishing agent for all of said emitters in all of said fire hazard zones.
4. A system according to Claim 1, further comprising a flow control device positioned in said piping network between said emitter and said second valve.
5. A system according to Claim 4, wherein said flow control device comprises a flow cartridge.
6. A system according to Claim 1, further comprising:
a plurality of said emitters distributed over a plurality of fire hazard zones; and a plurality of flow control devices positioned in said piping network between each one of said emitters and said second valve.
7. A system according to Claim 6, wherein said flow control devices each comprise a flow cartridge.
8. A system according to Claim 1, wherein said emitter comprises:
a nozzle having an inlet connected with said gas conduit downstream of said first valve and an outlet;
a duct connected in fluid communication with said piping network downstream of said second valve, said duct having an exit orifice positioned adjacent to said outlet; and a deflector surface positioned facing said outlet in spaced relation thereto, said deflector surface having a first surface portion oriented substantially perpendicularly to said nozzle and a second surface portion positioned adjacent to said first surface portion and oriented non-perpendicularly to said nozzle, said liquid extinguishing agent being dischargeable from said orifice, and said gaseous extinguishing agent being dischargeable from said nozzle outlet, said liquid extinguishing agent being entrained with said gaseous extinguishing agent and atomized thereby forming a liquid-gas stream that impinges on said deflector surface and flows away therefrom onto said fire.
9. A system according to Claim 8, wherein said gaseous extinguishing agent has a pressure between about 29 psia and about 60 psia in said gas duct.
10. A system according to Claim 9, wherein said liquid extinguishing agent has a pressure between about 1 psig and about 50 psig in said piping network.
11. A system according to Claim 10 wherein said deflector surface is positioned so that said gaseous extinguishing agent forms a first shock front between said outlet and said deflector surface, and a second shock front is formed proximate to said deflector surface.
12. A system according to Claim 11, wherein said duct is positioned and oriented such that said liquid extinguishing agent, discharged from said exit orifice, is entrained with said gaseous extinguishing agent proximate to one of said shock fronts.
13. A system according to Claim 12, wherein said liquid extinguishing agent is entrained with said gaseous extinguishing agent proximate to said first shock front.
14. A system according to Claim 12, wherein said liquid extinguishing agent is entrained with said gaseous extinguishing agent proximate to said second shock front.
15. A system according to Claim 10, wherein said deflector surface is positioned so that shock diamonds form in said liquid-gas stream.
16. A method of operating a fire suppression system, said system having an emitter comprising:
a nozzle having an inlet connected in fluid communication with a pressurized source of gaseous extinguishing agent and an outlet;
a duct connected in fluid communication with a pressurized source of liquid extinguishing agent, said duct having an exit orifice positioned adjacent to said outlet;
a deflector surface positioned facing said outlet in spaced relation thereto;
said method comprising:
discharging said liquid extinguishing agent from said exit orifice;
discharging said gaseous extinguishing agent from said outlet;
establishing a first shock front between said outlet and said deflector surface;
establishing a second shock front proximate to said deflector surface;

entraining said liquid extinguishing agent in said gaseous extinguishing agent to form a liquid-gas stream; and projecting said liquid-gas stream from said emitter.
17. A method according to Claim 16, comprising establishing a plurality of shock diamonds in said liquid-gas stream.
18. A method according to Claim 16, comprising supplying said gaseous extinguishing agent to said inlet at a pressure between about 29 psia and about 60 psia.
19. A method according to Claim 16, comprising supplying said liquid extinguishing agent to said duct at a pressure between about 1 psig and about 50 psig.
20. A method according to Claim 16, further comprising entraining said liquid extinguishing agent with said gaseous extinguishing agent proximate to said second shock front.
21. A method according to Claim 16, further comprising entraining said liquid extinguishing agent with said gaseous extinguishing agent proximate to said first shock front.
22. A method of operating a fire suppression system, said system having an emitter comprising:

a nozzle having an inlet connectable in fluid communication with a pressurized source of gaseous extinguishing agent and an outlet;
a duct connectable in fluid communication with a source of pressurized liquid extinguishing agent, said duct having an exit orifice positioned adjacent to said outlet;
a deflector surface positioned facing said outlet in spaced relation thereto;
said method comprising:
discharging said liquid extinguishing agent from said exit orifice;
discharging said gaseous extinguishing agent from said outlet creating an overexpanded gas flow jet from said nozzle;
entraining said liquid extinguishing agent in said gaseous extinguishing agent to form a liquid-gas stream; and projecting said liquid-gas stream from said emitter.
23. A method according to Claim 22, further comprising:
establishing a first shock front between said outlet and said deflector surface;
establishing a second shock front proximate to said deflector surface; and entraining said liquid extinguishing agent in said gaseous extinguishing agent proximate to one of said first and second shock fronts.
24. A method according to claim 23, further comprising establishing a plurality of shock diamonds in said liquid-gas stream from said emitter.
CA2668587A 2006-11-06 2007-10-31 Dual extinguishment fire suppression system using high velocity low pressure emitters Active CA2668587C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US86448006P 2006-11-06 2006-11-06
US60/864,480 2006-11-06
PCT/US2007/022873 WO2008057331A2 (en) 2006-11-06 2007-10-31 Dual extinguishment fire suppression system using high velocity low pressure emitters

Publications (2)

Publication Number Publication Date
CA2668587A1 true CA2668587A1 (en) 2008-05-15
CA2668587C CA2668587C (en) 2012-07-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2668587A Active CA2668587C (en) 2006-11-06 2007-10-31 Dual extinguishment fire suppression system using high velocity low pressure emitters

Country Status (14)

Country Link
US (2) US7686093B2 (en)
EP (1) EP2079530B1 (en)
JP (2) JP2010508896A (en)
KR (1) KR101368824B1 (en)
CN (1) CN101573159A (en)
AR (2) AR062764A1 (en)
AU (1) AU2007318053B2 (en)
CA (1) CA2668587C (en)
ES (1) ES2405819T3 (en)
IL (1) IL198431A (en)
MX (1) MX2009004869A (en)
MY (1) MY155005A (en)
TW (1) TWI438016B (en)
WO (1) WO2008057331A2 (en)

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US20080105442A1 (en) 2008-05-08
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US20100181081A1 (en) 2010-07-22
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US7686093B2 (en) 2010-03-30
EP2079530B1 (en) 2013-04-24

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