WO2013171880A1 - Appareil de prévention des incendies, appareil de dispersion de charge, tête de dispersion de charge, procédé de dispersion d'agent extincteur, et procédé de dispersion de charge - Google Patents

Appareil de prévention des incendies, appareil de dispersion de charge, tête de dispersion de charge, procédé de dispersion d'agent extincteur, et procédé de dispersion de charge Download PDF

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Publication number
WO2013171880A1
WO2013171880A1 PCT/JP2012/062654 JP2012062654W WO2013171880A1 WO 2013171880 A1 WO2013171880 A1 WO 2013171880A1 JP 2012062654 W JP2012062654 W JP 2012062654W WO 2013171880 A1 WO2013171880 A1 WO 2013171880A1
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Prior art keywords
spraying
charging
electrode portion
induction electrode
nozzle
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PCT/JP2012/062654
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English (en)
Japanese (ja)
Inventor
利秀 ▲辻▼
吉田　哲雄
Original Assignee
ホーチキ株式会社
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Application filed by ホーチキ株式会社 filed Critical ホーチキ株式会社
Priority to PCT/JP2012/062654 priority Critical patent/WO2013171880A1/fr
Priority to KR1020147026874A priority patent/KR101958514B1/ko
Publication of WO2013171880A1 publication Critical patent/WO2013171880A1/fr

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • 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
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways

Definitions

  • the present invention relates to a fire disaster prevention device, a charging spraying device, a charging spraying head, a fire extinguishing agent spraying method, and a charging spraying method in which a water-based fire extinguishing agent containing water, seawater, a fire extinguishing agent and the like is charged and sprayed from a head.
  • Patent Document 1 In the event of a fire, by charging the extinguishing agent particles sprayed from the charging spray head, the Coulomb force acting between the extinguishing agent particles and the fire extinguisher and smoke particles is used, and the three-dimensional and high power to the combustion product It is known that a high fire extinguishing and smoke extinguishing performance can be obtained by increasing the efficiency of the wetting effect and the smoke capturing effect (Patent Document 1).
  • FIG. 9 shows a conventional charge spraying head.
  • the charge spreading head 100 has a head main body 136 screwed and fixed to the tip of a falling pipe 134 connected to the pipe from the pump unit, and the head main body 136 has a cylindrical shape via an insulating member 141 inside the tip.
  • the water side electrode part (extinguishing agent side electrode part) 140 is incorporated.
  • a ground cable 150 drawn from a voltage application unit (not shown) is connected to the water side electrode unit (extinguishing agent side electrode) 140 through the insulating member 141, and the water side electrode unit 140 is connected to the ground side. ing.
  • An injection nozzle 138 is provided on the lower side of the water-side electrode unit 140 in the figure, and includes a nozzle rotor 138a provided inside the water-side electrode unit 140 and a nozzle head 138b provided on the tip side.
  • the injection nozzle 138 receives the pressure-supplied extinguishing agent from the falling pipe 134, converts it into a swirling flow by the nozzle rotor 138a, and then injects it from the nozzle head 138b to convert the extinguishing agent into a particle group flow. And spray.
  • a cover 142 made of an insulating material is fixed to the injection nozzle 138 with a screw through a fixing member 143, and a ring-shaped induction electrode portion 144 is incorporated into an opening on the lower side of the cover 142 to stop the cover. Screwed together with the ring.
  • the ring-shaped induction electrode portion 144 forms an opening through which the fire-extinguishing agent spray particles from the spray nozzle 138 pass at the center of the ring-shaped main body.
  • An electrode application cable 148 from a voltage application unit provided outside is connected to the ring-shaped induction electrode unit 144.
  • the water-side electrode portion 140 When spraying the fire extinguishing agent from the charging spray head 100, the water-side electrode portion 140 is set to the ground side at 0 volts, and the ring-shaped induction electrode portion 144 has a direct current, alternating current, or pulse of about several KV to several tens of KV, for example.
  • An applied voltage (charging voltage) is applied. By applying this voltage, an external electric field is generated between both electrodes, and the extinguishing agent is affected by the external electric field through an injection process in which the extinguishing agent is converted into a particle swarm from the injection nozzle 138.
  • the charged particle group stream can be dispersed outside.
  • the particle stream is generated by rotating the water flow with the nozzle rotor 138a of the head body 136 and spraying and radiating from the spray nozzle 138 using centrifugal force.
  • the charge amount per unit water volume decreases as the spray amount increases, and the fire extinguishing and smoke eliminating effect due to coulomb force is enhanced.
  • the problem that the action is reduced has been confirmed by experiments of the present inventors.
  • FIG. 10 is a ratio of the average charge amount per unit amount of charged spray water measured by the Faraday cage method when the charging voltage applied to the conventional charge spray head 100 shown in FIG. 9 is constantly +5 KV.
  • the specific charge indicating the average charge amount is smaller as the spray amount increases (the head becomes larger).
  • the spraying angle (spreading angle) of the extinguishing agent is about 90 degrees at most and the flight distance is also at most. Since it is comparatively short, there also exists a problem that a charge extinguishing agent cannot be spread over a wide range.
  • the aspect according to the present invention is a fire disaster prevention device, a charge spraying device (equipment), and a charge spraying (spraying) that secures a sufficient charge amount even when the spraying amount increases and exhibits a high fire extinguishing and smoke eliminating effect using Coulomb force. It is an object to provide a head, a fire extinguishing agent spraying method, and a charge spraying method.
  • a fire disaster prevention device equipment
  • a charging spraying device a charging spraying (spraying) head
  • a fire extinguishing agent spraying (spraying) method a fire extinguishing agent spraying (spraying) method
  • a charging method a spraying method.
  • the fire disaster prevention device is: A fire extinguisher supply facility for supplying a water-based fire extinguisher via a pipe; A charged spraying head that is installed in a protective compartment and is charged and sprayed on fire-extinguishing agent spray particles supplied by a fire-extinguishing agent supply facility; A fire-prevention device comprising a voltage application unit for applying a charging voltage to the electrostatic spraying head, The electrostatic spraying head A nozzle for injecting fire extinguishing agent into the external space; A fire extinguishing agent side electrode portion that is arranged inside the nozzle and contacts the extinguishing agent; A deflection spray member that deflects the fire extinguishing agent from the nozzle in an arbitrary direction to form a thin film flow, and then splits and splits the particle group flow; and An induction electrode portion disposed in the vicinity of the splitting separation portion of the thin film flow; Is provided.
  • the deflecting and dispersing member may be a deflector having a cone shape or a pyramid shape that deflects the fire extinguishing agent from the nozzle into a conical or pyramidal thin film flow.
  • the induction electrode portion may be any one of a metal, a resin, a fiber bundle, rubber, or a composite having conductivity. (4) In the above aspect (1), part or all of the induction electrode portion may be covered with an insulating material.
  • the extinguishing agent side electrode section may be at least a part of the extinguishing agent supply flow path in the electrification spraying head, or a nozzle.
  • the voltage of the extinguishing agent side electrode portion may be set to a predetermined reference value, and a predetermined charging voltage may be applied to the induction electrode portion.
  • a predetermined charging voltage in a direct current, alternating current, or pulse shape may be applied to the induction electrode portion.
  • a charge spraying head according to an aspect of the present invention is installed in a protective section and sprayed by applying a charging voltage from a voltage application unit to spray particles of a fire extinguisher supplied by a fire extinguisher supply facility.
  • a charging spray head that A nozzle for injecting fire extinguishing agent into the external space; A fire extinguishing agent side electrode portion that is arranged inside the nozzle and contacts the extinguishing agent; A deflection spray member that deflects the fire extinguishing agent from the nozzle in an arbitrary direction to form a thin film flow, and then splits and splits the particle group flow; and An induction electrode portion disposed in the vicinity of the splitting and separating portion of the thin film flow.
  • a spraying method is a fire disaster prevention apparatus, In the event of a fire, supply a water-based fire extinguisher to the electrostatic spraying head installed in the protection zone via a pipe, The fire extinguishing agent sprayed from the charging and spraying head is deflected in an arbitrary direction to form a thin film flow, and then divided and dispersed into a particle group flow.
  • the charging spray head is A nozzle for injecting fire extinguishing agent into the external space; A fire extinguishing agent side electrode portion that is arranged inside the nozzle and contacts the extinguishing agent; A deflection spray member that deflects the fire extinguishing agent from the nozzle in an arbitrary direction to form a thin film flow, and then splits and splits the particle group flow; and An induction electrode portion disposed in the vicinity of the splitting separation portion of the thin film flow; With An external electric field generated by applying a voltage between the induction electrode portion and the extinguishing agent side electrode portion may be applied to the extinguishing agent in the vicinity of the splitting separation portion of the thin film flow by the deflecting and spreading member to be charged.
  • the fire disaster prevention device of one aspect according to the present invention is: A fire extinguisher supply facility for supplying a water-based fire extinguisher under pressure through a pipe; A charged spraying head that is installed in a protective compartment and is charged and sprayed on fire-extinguishing agent spray particles supplied by a fire-extinguishing agent supply facility; A voltage application unit for applying a charging voltage to the charging and spreading head; A fire disaster prevention device comprising: The electrostatic spraying head A nozzle for injecting fire extinguishing agent into the external space; A fire extinguishing agent side electrode portion that is arranged inside the nozzle and contacts the extinguishing agent; A first deflecting spraying member that splits a part of the fire extinguishing agent from the nozzle in an arbitrary direction to form a first thin film flow, and then splits and separates the particles into a particle group flow; A first induction electrode portion disposed in the vicinity of the splitting separation portion of the first
  • the nozzle has a center nozzle hole and a ring-shaped nozzle hole formed coaxially around the rear thereof, and the first deflecting and spreading member receives the fire extinguishing agent discharged from the center nozzle hole of the nozzle.
  • the second deflecting and spreading member may be a second deflector having a conical shape or a pyramid shape that deflects the extinguishing agent discharged from the ring-shaped nozzle hole of the nozzle into a conical or pyramidal thin film flow.
  • the first induction electrode portion and the second induction electrode portion may be any one of a metal, a resin, a fiber bundle, rubber, or a composite having conductivity.
  • part or all of the first induction electrode portion and the second induction electrode portion may be covered with an insulating material.
  • the extinguishing agent side electrode portion may be at least a part of a supply flow path of the extinguishing agent in the charging spray head, or a nozzle.
  • the voltage of the extinguishing agent side electrode portion is set to a predetermined reference value. Good.
  • a predetermined charging voltage having a direct current, an alternating current, or a pulse shape may be applied to the first induction electrode portion and the second induction electrode portion.
  • a different number of deflection distribution members may be provided for one or a plurality of induction electrode portions as the charge distribution head.
  • a plurality of sets of deflection distribution members having different numbers may be provided for one or a plurality of induction electrode portions as the charge distribution head.
  • a charging spray head includes: A charge spraying head that is installed in a protective section and sprays the sprayed particles of the fire extinguisher supplied by the fire extinguisher supply equipment by charging by applying a charging voltage from a voltage application unit, A nozzle for injecting fire extinguishing agent into the external space; A fire extinguishing agent side electrode portion that is arranged inside the nozzle and contacts the extinguishing agent; A first deflecting spraying member that splits a part of the fire extinguishing agent from the nozzle in an arbitrary direction to form a first thin film flow, and then splits and separates the particles into a particle group flow; A first induction electrode portion disposed in the vicinity of the splitting separation portion of the first thin film flow; A second deflecting spraying member for sprinkling the remainder of the fire extinguishing agent exiting from the nozzle to form a second thin film stream that is located outside the first
  • a spraying method is a fire disaster prevention apparatus, In the event of a fire, supply a water-based fire extinguisher to the electrostatic spraying head installed in the protection zone via a pipe, Part of the fire extinguisher sprayed from the charging spray head is deflected in an arbitrary direction to form a first thin film flow, and then split and dispersed into a particle group flow. Apply an electric field to charge, The remainder of the fire extinguisher sprayed from the charging spray head is dispersed outside the first thin film flow and formed in the same direction and then split into particle groups and sprayed. Applying an external electric field near the split separation part of A particle swarm is dispersed in a double cone shape.
  • the charging spray head is A nozzle for injecting fire extinguishing agent into the external space; A fire extinguishing agent side electrode portion that is arranged inside the nozzle and contacts the extinguishing agent; A first deflecting spraying member that splits a part of the fire extinguishing agent from the nozzle in an arbitrary direction to form a first thin film flow, and then splits and separates the particles into a particle group flow; A first induction electrode portion disposed in the vicinity of the splitting separation portion of the first thin film flow; A second deflecting spraying member for sprinkling the remainder of the fire extinguishing agent exiting from the nozzle to form a second thin film stream that is located outside the first thin film stream and deflects in the same direction, and then splits and separates the particle stream; A second induction electrode portion disposed in the vicinity of the splitting separation portion of the second thin film flow; With An external electric field generated by applying a voltage between the first induction electrode part and the extingu
  • One aspect of the present invention is a charge spraying device, A spray agent supply facility for supplying a water-based spray agent via a pipe; A charged spraying head installed in a spraying section and charged by spraying spray particles of spraying agent supplied by a spraying agent supply facility; A charging application device comprising a voltage application unit for applying a charging voltage to the charging application head, The electrostatic spraying head A nozzle that sprays the spray agent into the external space; A spraying agent side electrode part that is arranged inside the nozzle and contacts the spraying agent; A deflecting spraying member that splits and sprays a particle group flow after forming a thin film flow by deflecting the spraying agent from the nozzle in an arbitrary direction; An induction electrode portion disposed in the vicinity of the splitting and separating portion of the thin film flow.
  • a charge spraying head is installed in a spraying section and sprayed by spraying spray particles of a spraying agent supplied by a spraying agent supply facility by applying a charging voltage from a voltage applying unit.
  • a charging spray head that A nozzle that sprays the spray agent into the external space;
  • a spraying agent side electrode part that is arranged inside the nozzle and contacts the spraying agent;
  • a deflecting spraying member that splits and sprays a particle group flow after forming a thin film flow by deflecting the spraying agent from the nozzle in an arbitrary direction;
  • An induction electrode portion disposed in the vicinity of the splitting separation portion of the thin film flow; Is provided.
  • a method for charging and dispersing a charge in a charging and dispersing device Supply the water-based spraying agent to the electrifying spraying head installed in the spraying section via the pipe, A spraying agent sprayed from a charging spraying head is deflected in an arbitrary direction to form a thin film flow, and then divided and dispersed into a particle group flow, and an external electric field is applied near the splitting and separating portion of the thin film flow to be charged.
  • the charging spray head is A nozzle that sprays the spray agent into the external space; A spraying agent side electrode part that is arranged inside the nozzle and contacts the spraying agent; A deflecting spraying member that splits and sprays a particle group flow after forming a thin film flow by deflecting the spraying agent from the nozzle in an arbitrary direction; An induction electrode portion arranged in the vicinity of the splitting separation portion of the thin film flow, An external electric field generated by applying a voltage between the induction electrode part and the spraying agent side electrode part may be applied to the spraying agent in the vicinity of the splitting separation part of the thin film flow by the deflecting spraying member to be charged.
  • One aspect of the present invention is a charge spraying device, A spray agent supply facility for supplying a water-based spray agent via a pipe; A charged spraying head installed in the spraying section and charged by spraying spray particles of spraying agent pressurized and supplied by a spraying agent supply facility; A voltage application unit for applying a charging voltage to the charging and spreading head; An electrostatic spraying device comprising: The electrostatic spraying head A nozzle that sprays the spray agent into the external space; A spraying agent side electrode part that is arranged inside the nozzle and contacts the spraying agent; A first deflecting spraying member that splits and sprays a part of the spraying agent exiting from the nozzle in an arbitrary direction to form a first thin film flow, and then splits and separates it into a particle group flow; A first induction electrode portion disposed in the vicinity of the splitting separation portion of the first thin film flow; A second deflecting spraying member for sprinkling and dispersing the remaining spray agent from the nozzle into
  • a charge spraying head according to an aspect of the present invention is installed in a spraying section and sprayed by spraying spray particles of a spraying agent supplied by a spraying agent supply facility by applying a charging voltage from a voltage application unit.
  • a charging spray head that A nozzle that sprays the spray agent into the external space; A spraying agent side electrode part that is arranged inside the nozzle and contacts the spraying agent; A first deflecting spraying member that splits and sprays a part of the spraying agent exiting from the nozzle in an arbitrary direction to form a first thin film flow, and then splits and separates it into a particle group flow; A first induction electrode portion disposed in the vicinity of the splitting separation portion of the first thin film flow; A second deflecting spraying member for sprinkling and dispersing the remaining spray agent from the nozzle into a particle group stream after forming a second thin film stream that is positioned outside the first thin film stream and deflects in the same direction; And a second induction electrode portion disposed in the vicinity of the splitting and separating portion of the second thin film flow, and the particle group flow is dispersed in a double cone shape.
  • a charge spraying method comprising: Supply the water-based spraying agent to the electrifying spraying head installed in the spraying section via the pipe, A part of the spraying agent sprayed from the charging spraying head is deflected in an arbitrary direction to form a first thin film flow, and then divided and dispersed into a particle group flow. Apply an electric field to charge, The remainder of the spraying agent sprayed from the charging spraying head is dispersed outside the first thin film flow and formed in a second thin film flow deflected in the same direction. Applying an external electric field near the split separation part of A particle swarm is dispersed in a double cone shape.
  • the charging spray head is A nozzle that sprays the spray agent into the external space; A spraying agent side electrode part that is arranged inside the nozzle and contacts the spraying agent; A first deflecting spraying member that splits and sprays a part of the spraying agent exiting from the nozzle in an arbitrary direction to form a first thin film flow, and then splits and separates it into a particle group flow; A first induction electrode portion disposed in the vicinity of the splitting separation portion of the first thin film flow; A second deflecting spraying member for sprinkling and dispersing the remaining spray agent from the nozzle into a particle group stream after forming a second thin film stream that is positioned outside the first thin film stream and deflects in the same direction; A second induction electrode portion disposed in the vicinity of the splitting separation portion of the second thin film flow, An external electric field generated by applying a voltage between the first induction electrode part and the spraying agent side electrode part is applied to the spraying agent in the vicinity of the splitting separation part of the
  • the extinguishing agent ejected from the nozzles of the charging spray head is spread in an arbitrary predetermined direction by the deflector serving as the deflecting spray member.
  • Forming a thin film flow, placing an induction electrode near the splitting separation part where the thin film flow is converted into a particle group flow, and applying an external electric field to charge the head Electrostatic spraying can be performed.
  • the deflection shape of the deflecting spray member that deflects the fire extinguishing agent sprayed from the nozzle into a thin film flow in any given direction it is possible to easily achieve wide-angle electrification spraying compared to the conventional case, coupled with an increase in the amount of water spray. Sufficient flight distance can be obtained, and a high extinguishing and extinguishing effect using Coulomb force can be obtained by spraying a charge extinguishing agent over a wide range.
  • the deflector in which the extinguishing agent ejected from the nozzle of the charge spraying head is coaxially arranged in two stages to be a deflection spraying member By forming a thin film flow that spreads in an arbitrary predetermined direction by each, and arranging an induction electrode in the vicinity of the splitting separation portion where each thin film flow is converted into a particle group flow, applying an external electric field and charging the double cone A particle swath that is shaped like a double cone can be dispersed, and a large amount of charge can be dispersed over a wide area.
  • FIG. 1 is a longitudinal sectional view showing an embodiment of a charging spray head according to the present invention. It is the top view which looked at the electrification spreading head of Drawing 2 from the lower side (floor side) in the ceiling installation state. It is the graph which showed the relationship between the spraying quantity by this embodiment, and a specific charge with contrast with the conventional head. It is a time chart which showed the applied voltage supplied to the electrification distribution head of this embodiment. It is the longitudinal cross-sectional view which showed other embodiment of the electrification spreading head by this invention. It is explanatory drawing which looked at the electrification dispersion
  • FIG. 1 is an explanatory view showing an embodiment of a fire disaster prevention device (fire disaster prevention equipment) according to the present invention.
  • the charging spraying heads 10 according to the present embodiment are installed on the ceiling side of the protection areas A and B such as a computer room in the building. Fire extinguishing agent is sprayed on the area.
  • a pipe 16 is connected via a manual valve (gate valve) 13 from a pump unit 12 installed to a water source 14 that functions as a fire extinguishing agent storage / supply facility (sprhin storage / supply facility). Via the pressure valve 30 and the automatic opening / closing valve 32, it is connected to the charging spray head 10 installed in each of the protection areas A and B.
  • the water source 14 stores water, seawater, or other water-based fire extinguishing agents.
  • a dedicated fire detector 18 serving as an input signal source for controlling the extinguishing agent spraying from the charging spraying head 10 is installed. Further, an interlocking control relay device 20 is provided for each of the protection areas A and B, and a dedicated fire detector 18 is connected to the signal line. The interlock control relay device 20 is further connected with a manual operation box 22 for performing spray control from the charge spray head 10 by manual operation.
  • the interlock control relay device 20 is connected to the signal lines from the dedicated fire detector 18 and the manual operation box 22 in this way, and controls the application of a charging voltage (charging driving voltage) to the charging spraying head 10. And a signal line for controlling opening / closing of the automatic opening / closing valve 32 are drawn out.
  • a fire detector 26 of an automatic fire alarm facility is installed in the protection area A, and is connected to a sensor line drawn from a receiver 28 of the automatic fire alarm facility.
  • the fire detector 26 of the automatic fire alarm facility is not provided in the protection area B, it is a matter of course that it may be provided as necessary.
  • the interlock control relay device 20 installed corresponding to the protection areas A and B is connected to the system monitoring control panel 24 by a signal line.
  • a receiver 28 of an automatic fire alarm facility is also connected to the system monitoring control panel 24.
  • the system monitoring control panel 24 connects the pump unit 12 to the signal line to control the pump start / stop of the pump unit 12.
  • FIG. 2 is an explanatory diagram showing the protection area A in FIG.
  • a charging spray head 10 is installed on the ceiling side of the protection area A.
  • the ceiling side pipe (falling pipe 34 in FIG. 3) to which the charging spraying head 10 is connected is connected to the pipe 16 from the pump unit 12 shown in FIG. 1 via the pressure regulating valve 30 and the automatic opening / closing valve 32. Yes.
  • a voltage application unit 15 is installed on the upper part of the charging / spreading head 10.
  • a fire extinguishing that applies a predetermined voltage to the charging / spreading head 10 and ejects it from the charging / spreading head 10. The agent is charged so that it can be sprayed.
  • a dedicated fire detector 18 is installed on the ceiling side of the protection area A, and a fire detector 26 of an automatic fire alarm facility is also connected.
  • the voltage application unit 15 may be provided integrally with the charging / spreading head 10.
  • FIG. 3 shows an embodiment of the charging and spreading head 10 shown in FIGS. 1 and 2, and shows a longitudinal section thereof.
  • FIG. 4 is an explanatory view of the charging / spreading head 10 as viewed from the lower side (floor side) in a ceiling installation state.
  • the charging and spreading head 10 has metal bodies 36, 38 divided into upper and lower parts connected by bolts 37, and is attached to the tip of a falling pipe 34 connected to the pipe 16 from the pump unit 12.
  • the body 36 is fixed by screwing.
  • a cylindrical fire extinguishing agent side electrode portion 46 is incorporated in the internal flow path (supply flow path) of the bodies 36 and 38.
  • the extinguishing agent side electrode portion 46 is made of a conductive metal material, and further covered with an insulating material, and is electrically insulated from the metal bodies 36 and 38.
  • the extinguishing agent-side electrode portion 46 is connected to a ground cable 54 drawn from the voltage application portion 15 installed in the vicinity of the outside.
  • the extinguishing agent side electrode portion 46 is grounded by the connection of the ground cable 54.
  • a nozzle portion 40 is formed at the tip of the internal flow path (supply flow path) of the body 38 disposed at the lower part.
  • a deflector 42 that functions as a deflecting and spreading unit is disposed on the ejection side of the nozzle unit 40.
  • the deflector 42 is provided at the tip of a rod 45 that extends from a deflector support 44 that is assembled and fixed via an insulating spacer 43 following the extinguishing agent side electrode 46 in the body 38, and is located in front of the nozzle 40 (downward in the figure). ).
  • the deflector 42 is a conical plate body having a predetermined apex angle ⁇ , deflects the fire extinguishing agent from the nozzle portion 40 along the conical surface, converts it into a thin film flow 56 and radiates it.
  • the thin film flow 56 formed by the deflector 42 is radiated as a particle group flow 58 by splitting and separating the thin film flow 56 from the vicinity of the splitting separation portion P, and is sprayed as a spray pattern 60 schematically illustrated.
  • a cylindrical frame 50 opened at the bottom is assembled and fixed to the body 38 with bolts 37.
  • the opening end of the frame 50 is positioned below the splitting separation part P, that is, on the scattering space side, and an annular induction electrode part 48 is disposed on the inner peripheral surface near the splitting separation part P. .
  • the induction electrode portion 48 is formed of a conductive member and is covered with an insulating material, and is electrically insulated from the metal frame 50 and the fire extinguisher sprayed.
  • the voltage application cable 52 drawn from the voltage application unit 15 shown in FIG. 2 is connected to the induction electrode unit 48 arranged on the lower inner peripheral side of the frame 50.
  • the induction electrode portion 48 is disposed, for example, in a region that is 10 mm or less upstream of the splitting portion P of the thin film flow 56, 30 mm or less downstream, and 20 mm or less from the surface of the thin film flow 56. Yes.
  • extinguishing agent side electrode portion 46 and the induction electrode portion 48 used in the charging and spreading head 10 of the present embodiment in addition to conductive metal, conductive resin, fiber bundle, rubber, etc. It may also be a composite that combines these.
  • the voltage application unit 15 shown in FIG. 2 is operated by the control signal from the interlock control relay device 20 shown in FIG. 1, and the fire extinguishing agent side electrode unit 46 is connected to the reference potential.
  • a DC (steady) applied voltage of about several KV to several tens of KV, for example, an applied voltage that is AC or pulsed is applied to the induction electrode portion 48.
  • the applied voltage is preferably in a range not exceeding 20 KV, but is not limited thereto.
  • the fire extinguisher sprayed from the nozzle portion 40 is deflected by the deflector 42, a part of the fire extinguisher may come into contact with the induction electrode portion 48 due to peeling or scattering, but the induction electrode portion 48 is covered with an insulating material. Therefore, the fire extinguisher can be charged without contact with the fire extinguisher and without causing a problem of short circuit or charge neutralization.
  • FIG. 5 schematically shows an example in which the relationship between the spray amount and the specific charge in a certain condition is compared between the charge spray head 10 according to the present embodiment provided with the deflector 42 and the conventional charge spray head without the deflector 42. It is the shown graph.
  • the characteristic B is a characteristic of a conventional charging / spreading head, and is a case where a predetermined charging voltage is constantly applied.
  • the specific charge indicating the charge amount greatly decreases with the increase in the spray amount per unit time.
  • the spray amount as shown in the characteristic A for example.
  • the decrease in specific charge is small with respect to the increase in.
  • the specific charge (point “a” of characteristic A) of the nozzle of the present embodiment at a spray rate of 7 [liter / min] is the specific charge of the conventional nozzle at a spray rate of 1.5 [liter / min].
  • the level corresponds to the point B of the characteristic B).
  • the problem that the charge amount per unit water amount greatly decreases as the spraying amount increases in the conventional charge spraying head is solved, and charging is performed with high efficiency. Therefore, a large charge amount can be dispersed while the charge distribution head has a large amount of distribution.
  • the conventional charge spraying head can be obtained by appropriately setting the apex angle ⁇ of the deflector 42. Compared to, wide-angle charge spraying can be easily realized, and the amount of water spray can be increased while suppressing charging loss, so a sufficient flight distance is obtained, and a wide range of charged fire extinguishing agents is sprayed to obtain a high fire-fighting and smoke-extinguishing effect. be able to.
  • the dedicated fire detector 18 detects a fire and sends a fire detection signal to the system monitoring control panel 24 via the interlock control relay device 20.
  • the pump unit 12 When the system monitoring control panel 24 receives the fire detection signal from the dedicated fire detector 18 installed in the protection area A, the pump unit 12 is activated, the fire-extinguishing water is pumped up from the water source 14 and pressurized by the pump unit 12, and piping 16 is supplied.
  • the system monitoring control panel 24 outputs a start signal for the charging and spreading head 10 to the interlock control relay device 20 provided corresponding to the protection area A.
  • the interlock control relay device 20 opens the automatic opening / closing valve 32, whereby the water-based fire extinguisher having a constant pressure regulated by the pressure regulating valve 30 is charged via the opened automatic opening / closing valve 32. It is supplied to the spraying head 10 and is sprayed as spray particles (group) from the charging spraying head 10 to the protection area A as shown in FIG.
  • the interlock control relay device 20 sends an activation signal to the voltage application unit 15 provided in the charge distribution head 10 shown in FIG.
  • a DC, AC or pulsed applied voltage of several KV is supplied.
  • the thin film flow 56 deflected by the deflector 42 by jetting a water-based fire extinguisher pressurized from the nozzle portion 40 is converted into a particle group flow 58.
  • a voltage of several KV is applied in a predetermined pattern to the reference potential (earth) of the extinguishing agent side electrode portion 46 on the annular induction electrode portion 48 side provided inside the frame 50, and this voltage
  • the external electric field generated by the application can be charged and dispersed by applying it to the extinguishing agent in the vicinity of the splitting separation part P.
  • the smoke extinguishing effect in the present embodiment is such that the smoke extinguishing effect by spraying the non-charged extinguishing agent particles as in the prior art is a trapping action by stochastic collision between the extinguishing agent particles and the smoke particles.
  • smoke particles in the charged state of opposite polarity are collected by the Coulomb force of the extinguishing agent particles that are sprayed and charged, thereby exhibiting a high smoke extinguishing effect including a smoke diffusion suppressing effect. Is done.
  • the smoke eliminating effect in the present embodiment as described above is that the smoke eliminating effect by the dispersion of uncharged water particles as in the conventional case is a capturing action by the stochastic collision between the water particles and the smoke particles. In that case, smoke particles that are also in a charged state are collected by the Coulomb force of the water particles that are charged and dispersed, and thereby a significant smoke eliminating effect is exhibited.
  • the polarity of charging can be appropriately selected depending on the object to be sprayed. For example, when the polarity of the object to be sprayed is approximately positive, control is performed such that the extinguishing agent particles are charged to a negative polarity.
  • FIG. 6 is a time chart showing a voltage application pattern applied from the voltage application unit 15 to the charging / spreading head 10 according to the present embodiment, and voltage is applied as follows from each time t1.
  • FIG. 6A shows the case where a + V DC (steady) voltage is applied.
  • negatively charged extinguishing agent particles are continuously dispersed.
  • FIG. 6B shows a case where a DC (steady) voltage of ⁇ V is applied. In this case, positively charged extinguishing agent particles are continuously dispersed.
  • FIG. 6C shows a case where an AC voltage of ⁇ V is applied.
  • the negatively charged extinguishing agent particles are dispersed in accordance with the change of the AC voltage during the positive half cycle, and the negative voltage is applied.
  • the positively charged extinguishing agent particles are alternately sprayed according to the change of the AC voltage.
  • FIG. 6D shows a case where a pulsed voltage of + V is repeatedly applied at a predetermined interval.
  • negatively charged extinguishing agent particles are intermittently scattered, and no voltage is applied. During the period, there will be a spray of uncharged extinguishing agent particles.
  • FIG. 6 (E) shows a case where a pulsed voltage of ⁇ V is repeatedly applied at a predetermined interval.
  • positively charged extinguishing agent particles are intermittently dispersed and voltage is applied. During periods when there is no charge, there will be a spread of uncharged extinguishing agent particles.
  • FIG. 6 (F) shows a case where a pulsed voltage of ⁇ V is repeatedly applied alternately at a predetermined interval.
  • the negatively charged extinguishing agent particles and the positively charged extinguishing agent particles are intervals.
  • the non-charged extinguishing agent particles are dispersed.
  • a pulse voltage of ⁇ V may be alternately applied repeatedly without providing such an interval.
  • the application period and the inversion period can be appropriately determined, and a combination of a plurality of patterns shown in FIGS. 6A to 6F. And so on.
  • a commercially available boosting unit with a control input can be used as the voltage application unit 15 that supplies the application voltage of each pattern illustrated in FIG. 6 to the charging / spreading head 10.
  • FIG. 7 shows another embodiment of the charge distribution head according to the present invention, and shows a longitudinal section thereof.
  • FIG. 8 is an explanatory view of the charging / spreading head of FIG. 7 as viewed from the lower side (floor side) in the ceiling installation state.
  • the charge spraying head of this embodiment is characterized in that the fire extinguisher particle group stream is charged and sprayed in a double cone shape (double cone shape) in order to spray over a wide range.
  • the charging and spreading head 10 has metal bodies 36 and 38 divided into upper and lower parts connected by bolts 37, and is attached to the tip of a falling pipe 34 connected to the pipe 16 from the pump unit 12.
  • the body 36 is fixed by screwing.
  • a cylindrical fire extinguishing agent side electrode portion 46 is incorporated in the internal flow path (supply flow path) of the bodies 36 and 38.
  • the extinguishing agent side electrode portion 46 is made of a conductive metal material, and further covered with an insulating material, and is electrically insulated from the metal bodies 36 and 38.
  • An insulating spacer 43 is disposed below the extinguishing agent side electrode portion 46.
  • the extinguishing agent-side electrode portion 46 is connected to a ground cable 54 drawn from the voltage application portion 15 installed in the vicinity of the outside.
  • the extinguishing agent side electrode portion 46 is grounded by the connection of the ground cable 54.
  • a nozzle portion 70 is formed at the tip of the internal flow path (supply flow path) of the body 38 disposed in the lower part.
  • the nozzle unit 70 of the present embodiment includes a first deflector 42-1 serving as a first deflecting and spreading member in a space on the tip side of the rod 45 extending from the deflector support 44-1 disposed at the center position.
  • the cylindrical base portion is screwed and supported on the deflector support portion 44-2 arranged coaxially, and the second deflector 42- is used as a second spraying deflecting member in the space on the front end side behind the first deflector 42-1. 2 is arranged.
  • the second deflector 42-2 has a shape in which a nozzle hole is formed in the center and the tip outer peripheral side is expanded in a conical shape, and the rod 42-1 is inserted into the center nozzle hole.
  • a first nozzle portion 40-1 that discharges a fire extinguishing agent toward the first deflector 42-1 is formed by the gap between the nozzle hole and the rod 42-1 in the insertion portion.
  • a ring-shaped gap (ring-shaped nozzle hole) is formed between the nozzle opening of the nozzle portion 70 and the cylindrical base portion that is inserted through the nozzle opening and supports the second deflector 40-2.
  • the gap in the shape of the second nozzle part 40-2 that discharges the fire extinguishing agent toward the second deflector 42-2.
  • the first deflector 42-1 is a conical body having a predetermined apex angle ⁇ 1, and deflects the fire extinguisher ejected from the first nozzle part 40-1 along the conical surface to form a thin film Converts to stream 56-1 and emits.
  • the thin film flow 56-1 formed by the first deflector 42-1 is split and separated from the vicinity of the splitting separation portion P1, and is radiated as the first particle group flow 58-1, and the dispersion pattern 60- shown schematically. 1 is sprayed.
  • the second deflector 42-2 is formed with a conical body having a predetermined apex angle ⁇ 2 larger than the apex angle ⁇ 1 of the first deflector 40-1 at the tip of the cylindrical base as shown in the figure.
  • the fire extinguishing agent ejected from the second nozzle section 40-2 having the above is deflected at a wide angle along the conical surface, converted into a thin film flow 56-2 and emitted.
  • the thin film flow 56-2 formed by the second deflector 42-2 is split and separated from the vicinity of the splitting separation portion P2, and is radiated as the second particle group flow 58-2.
  • the first deflector 40-1 is spread over a wide angle so as to cover the outer side of the spreading pattern 60-2, and thereby a spreading pattern that uniformly covers a wide area of a double cone shape (double cone shape). Form.
  • a cylindrical frame 50 opened on the lower side is assembled and fixed to the body 38 with bolts 37.
  • the open end of the frame 50 is positioned below the splitting separation part P2 of the thin film flow 56-2 formed by deflection by the second deflector 42-2, that is, on the scattering space side, and further in the vicinity of the splitting separation part P2.
  • An annular second induction electrode portion 48-2 is arranged on the inner peripheral surface.
  • a ring-shaped frame 74 is supported by the holder arm 72 below the frame 50.
  • the lower end of the frame 74 is positioned below the splitting separation part P1 of the thin film flow 56-1 deflected by the first deflector 40-1, that is, on the scattering space side.
  • An annular first induction electrode portion 48-1 is disposed on the inner peripheral surface in the vicinity.
  • the first induction electrode portion 48-1 and the second induction electrode portion 48-2 are formed of a conductive member and are covered with an insulating material, so that the metal frames 50 and 74 and the fire extinguishing agent to be sprayed are protected. It is electrically insulated.
  • a voltage application cable 52 drawn from the voltage application unit 15 shown in FIG. 2 is connected to the first induction electrode unit 48-1 and the second induction electrode unit 48-2 arranged in the frames 50 and 74. Yes.
  • the first induction electrode part 48-1 and the second induction electrode part 48-2 are, for example, 10 mm or less upstream of the splitting separation parts P1 and P2 of the thin film flows 56-1 and 56-2, and 30 mm or less downstream. Further, they are arranged in a region that is 20 mm or less from the surface of the thin film flows 56-1 and 56-2.
  • the extinguishing agent side electrode unit 46, the first induction electrode unit 48-1, and the second induction electrode unit 48-2 used in the charging and spreading head 10 of the present embodiment are not limited to conductive metals. Further, it may be a resin having conductivity, a fiber bundle, rubber, or the like, or may be a composite that combines these.
  • the voltage application unit 15 shown in FIG. 2 is operated by the control signal from the interlock control relay device 20 shown in FIG.
  • the electrode portion 46 is set to the ground side, and an applied voltage of DC, AC, or pulse shape of, for example, about several KV to several tens of KV is applied to the first induction electrode portion 48-1 and the second induction electrode portion 48-2.
  • the applied voltage is preferably in a range not exceeding 20 KV, but is not limited thereto.
  • an external electric field is generated by applying this voltage, and the fire extinguishing agent sprayed from the first nozzle part 40-1 and the second nozzle part 40-2 is applied to the first deflector 42-1 and the second deflector 42-2.
  • the fire-extinguishing agent spray particles are charged through the process of being converted into a two-particle group flow 58-2, and the charged spray particles are charged as a double cone-shaped pattern that uniformly covers a wide area outside. Can be sprayed.
  • the electrification spraying head 10 used in the present embodiment it is possible to secure a spraying pattern suitable for the size of the protective section by appropriately adjusting the apex angles of the deflectors 42, 42-1 and 42-2. it can.
  • the annular electrodes are used as the induction electrode portions 48, 48-1, and 48-2.
  • the shape of each is arbitrary, for example, the deflectors 42, 42-1, and 42-
  • An annular electrode having an electrode surface substantially parallel to the flow direction of the thin film flows 56, 56-1, and 56-2 generated in Step 2 may be used.
  • the annular electrodes that are substantially parallel to the flow direction of the thin film flow are used as the induction electrode portions 48, 48-1, and 48-2, the distances between the respective portions in the electrode surface and the thin film flow surface become uniform. It is possible to increase the efficiency and obtain a stable charge.
  • the applied voltage pattern to the charging and spreading head is set such that the induction electrode side is alternately plus / minus applied voltage with respect to the extinguishing agent side electrode part, only the plus voltage is applied, or only the minus voltage is applied.
  • the number of induction electrode portions and deflectors is arbitrary, and for example, a triple cone type in which three of them are combined may be used.
  • the number of nozzle portions is arbitrary.
  • the combination of the number of induction electrode portions and the number of deflectors is also arbitrary. For example, even if a plurality of deflectors are provided for one induction electrode portion, one deflector is provided for a plurality of induction electrode portions. It may be a thing. In addition, a plurality of nozzle portions each composed of a combination of different numbers of induction electrode portions and deflectors may be provided.
  • the charging spray head and the fire extinguishing agent spraying method of the present invention can be used in various ways for the purpose of extinguishing fire, preventing the spread of fire, or smoke. Of course, it may be used for other purposes.
  • the present invention is not limited to the above, and includes an electrostatic spraying device (equipment) for charging and spraying a water-based spraying agent to an appropriate spraying target section, a charging spraying head, and a charging method for the charging spraying device.
  • the extinguishing agent and the extinguishing agent side electrode part in the above embodiment may be read as the spraying agent and the spraying agent side electrode part.
  • the induction electrode portion and the deflector do not necessarily have a conical shape, and may be, for example, a pyramid shape.
  • spraying agents such as water or various water-based fire extinguishing agents can be applied.
  • the induction electrode portion 48 is formed by insulating coating with an insulating material, so that water contacts the induction electrode portion 48 and short circuit or charge neutralization occurs. Therefore, safety can be ensured and the particle swarm 58 (charged spray water) can be suitably generated.
  • Table 1 shows a case where the ejection flow rate (spray water amount) is 1 L / min, the applied voltage applied by the induction electrode unit 48 is +5 kV, the induction electrode unit 48 is formed without providing an insulating coating, and various insulating materials.
  • the charging and spreading head 10 of the present embodiment such polyvinyl chloride resin, polyphenylene sulfide resin (PPS), urethane resin, polytetrafluoroethylene resin, polychlorotrifluoroethylene resin, alumina ceramics, glass
  • PPS polyphenylene sulfide resin
  • urethane resin polytetrafluoroethylene resin
  • polychlorotrifluoroethylene resin polychlorotrifluoroethylene resin
  • alumina ceramics alumina ceramics
  • the charged water particle spraying device of the present invention can also be applied as a fire extinguishing device. Also in this case, as described in, for example, Japanese Patent Application Laid-Open No. 2009-106405 and WO 2009/107421, good fire extinguishing can be achieved by efficiently wetting the combustion object to be dispersed by the action of charged water particles. In addition to obtaining the effect, it is also possible to suppress the generation of smoke due to combustion and capture the generated smoke to prevent diffusion. In addition, according to the charged water particle spraying device of the present invention, it is possible to extinguish a fire by accurately spraying charged water particles from a distance of the combustion material toward the combustion material, or to suppress expansion of combustion. it can. In this case, as the insulating coating material for the induction electrode portion, it is more preferable to use ceramics or cocoons having excellent heat resistance and fire resistance.
  • the present invention includes appropriate modifications that do not impair the object and advantages thereof, and is not limited only by the numerical values shown in the above embodiments.
  • a fire disaster prevention device a charging spraying device (equipment), and a charging spraying (spraying) head that ensure a sufficient charge amount even when the spraying amount increases and exhibit a high fire extinguishing and smoke eliminating effect using Coulomb force.
  • a fire extinguishing agent spraying method and a charge spraying method can be provided.
  • a fire disaster prevention device equipment
  • a charge spraying device a charge spraying (spraying) head
  • a fire extinguishing agent spraying (spraying) method a fire spraying that uniformly spread a fire extinguisher having a large charge amount over a wide range
  • a charge spraying that uniformly spread a fire extinguisher having a large charge amount over a wide range

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

La présente invention concerne un appareil de prévention des incendies, comprenant : un équipement d'approvisionnement en agent extincteur, servant à envoyer un agent extincteur aqueux à travers un tuyau ; une tête de dispersion de charge, qui est installée dans une section protégée, et qui charge et disperse les particules pulvérisées d'agent extincteur envoyées au moyen de l'équipement d'approvisionnement en agent extincteur ; et une unité d'application de tension, servant à appliquer une tension chargée sur la tête de dispersion de charge. La tête de dispersion de charge comprend : une buse, servant à pulvériser l'agent extincteur dans un espace externe ; une partie d'électrode côté agent extincteur, qui est disposée à l'intérieur de la buse au contact de l'agent extincteur ; un élément de déviation et de dispersion, qui dévie l'agent extincteur sortant de la buse dans une direction quelconque afin de former un écoulement en film mince, puis qui sépare et disperse cet écoulement en écoulements de groupes de particules ; et une électrode diélectrique, qui est disposée dans la région où est séparé l'écoulement en film mince.
PCT/JP2012/062654 2012-05-17 2012-05-17 Appareil de prévention des incendies, appareil de dispersion de charge, tête de dispersion de charge, procédé de dispersion d'agent extincteur, et procédé de dispersion de charge WO2013171880A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2012/062654 WO2013171880A1 (fr) 2012-05-17 2012-05-17 Appareil de prévention des incendies, appareil de dispersion de charge, tête de dispersion de charge, procédé de dispersion d'agent extincteur, et procédé de dispersion de charge
KR1020147026874A KR101958514B1 (ko) 2012-05-17 2012-05-17 화재 예방 장치, 대전 살포 장치, 대전 살포 헤드, 소화제 살포 방법 및 대전 살포 방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/062654 WO2013171880A1 (fr) 2012-05-17 2012-05-17 Appareil de prévention des incendies, appareil de dispersion de charge, tête de dispersion de charge, procédé de dispersion d'agent extincteur, et procédé de dispersion de charge

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4991780A (en) * 1990-01-29 1991-02-12 Crane Co. Duocone spray nozzle
US5862992A (en) * 1997-02-14 1999-01-26 Sterling Deaerator Company Adjustable dual cone spray pattern valve apparatus and related methods
WO2009107421A1 (fr) * 2008-02-28 2009-09-03 ホーチキ株式会社 Dispositif de tête de buse de lutte contre l'incendie
WO2010082349A1 (fr) * 2009-01-19 2010-07-22 ホーチキ株式会社 Installation de prévention d'incendie et procédé de pulvérisation
WO2010125627A1 (fr) * 2009-04-27 2010-11-04 ホーチキ株式会社 Equipement de prévention contre les incendies

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4989419B2 (ja) * 2007-10-29 2012-08-01 ホーチキ株式会社 火災防災設備及び散布方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4991780A (en) * 1990-01-29 1991-02-12 Crane Co. Duocone spray nozzle
US5862992A (en) * 1997-02-14 1999-01-26 Sterling Deaerator Company Adjustable dual cone spray pattern valve apparatus and related methods
WO2009107421A1 (fr) * 2008-02-28 2009-09-03 ホーチキ株式会社 Dispositif de tête de buse de lutte contre l'incendie
WO2010082349A1 (fr) * 2009-01-19 2010-07-22 ホーチキ株式会社 Installation de prévention d'incendie et procédé de pulvérisation
WO2010125627A1 (fr) * 2009-04-27 2010-11-04 ホーチキ株式会社 Equipement de prévention contre les incendies

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KR20150016484A (ko) 2015-02-12

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