WO2010125627A1 - 火災防災設備 - Google Patents
火災防災設備 Download PDFInfo
- Publication number
- WO2010125627A1 WO2010125627A1 PCT/JP2009/058246 JP2009058246W WO2010125627A1 WO 2010125627 A1 WO2010125627 A1 WO 2010125627A1 JP 2009058246 W JP2009058246 W JP 2009058246W WO 2010125627 A1 WO2010125627 A1 WO 2010125627A1
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- WIPO (PCT)
- Prior art keywords
- water
- fire
- particles
- extinguishing agent
- head
- Prior art date
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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
- A62C35/00—Permanently-installed equipment
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water
Definitions
- the present invention relates to a fire disaster prevention facility in which water-based fire extinguishing agent particles containing water, seawater, and a fire extinguishing agent are charged and dispersed from a head.
- the water mist fire extinguishing equipment reduces the water particles to 20-200 ⁇ m, which is a fraction of that of sprinkler equipment and water spray equipment, and discharges it into the space. Therefore, the fire extinguishing effect with a small amount of water is expected.
- the inventors of the present application charge the extinguishing agent particles sprayed from the head in the event of a fire, and thereby have a wetting effect on the combustion product by the Coulomb force acting on the extinguishing agent particles.
- We have proposed a fire disaster prevention facility that can enhance the fire extinguishing effect by enhancing the effect of collecting the fire extinguishing agent particles of the smoke generated by the fire due to the Coulomb force Japanese Patent Application No. 2007-279865.
- Such a fire extinguishing effect and a smoke extinguishing effect are higher when the particle size of the extinguishing agent is as small as possible so that the particle size of the extinguishing agent does not immediately evaporate and disappear in the fire room atmosphere. .
- the smaller the particle size the greater the amount of wraparound adhesion to the combustible material due to Coulomb force
- the smaller the particle size the larger the particle concentration (number of particles in the unit space), and the distance between the smoke particles and the extinguishing agent particles. This is presumed to be because the effect of collection by the Coulomb force becomes larger as the value of becomes smaller.
- the water particles are discharged from the head at an initial velocity of about 23 m / s, but for example, about 1 m or less in the lateral direction. Stalls due to air resistance at the flight distance.
- An object of this invention is to provide the fire disaster prevention equipment which can ensure the wide protection range by extending the flight distance of the fire extinguisher particle electrified and sprayed from the head.
- the present invention 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 protected area and is charged by spraying radiation particles of water-based fire extinguisher pressurized by a fire extinguisher supply facility;
- a voltage applying unit for applying a charging voltage to the charging and spreading head for spreading and charging;
- the electrification spray head includes a head structure that emits a water-based fire extinguisher in which a relatively small particle diameter and a relatively large particle diameter included in a predetermined particle diameter range are mixed.
- the charging spray head emits a water-based fire extinguisher in which a relatively small particle size and a relatively large particle size included in a range from 30 ⁇ m to 2000 ⁇ m are mixed.
- the electrostatic spraying head A small particle diameter head portion that emits an aqueous fire extinguisher having an average particle diameter in the range of 30 ⁇ m to 200 ⁇ m; A large particle diameter head portion that emits an aqueous fire extinguisher having an average particle diameter in the range of 200 ⁇ m to 2000 ⁇ m; Is provided.
- the electrostatic spraying head is placed next to the small particle head and large particle head side by side.
- the small particle diameter head is A small particle injection nozzle that converts and sprays water-based extinguishing agent into particles of a small particle diameter by spraying to the external space; A water swirling core for swirling the water flow to be supplied to the spray nozzle; An induction electrode portion arranged on the injection space side of the injection nozzle; A water-side electrode portion disposed inside the injection nozzle and in contact with an aqueous fire extinguishing agent; With Large particle diameter head A large particle injection nozzle that transforms and sprays water-based fire extinguishing agent into particles of large particle size by spraying to the external space; A water swirling core for swirling the water flow to be supplied to the spray nozzle; An induction electrode portion arranged on the injection space side of the injection nozzle; A water-side electrode portion disposed inside the injection nozzle and in contact with an aqueous fire extinguishing agent; With The voltage application unit injects an external electric
- the electrification spray head is a small particle spray nozzle that sprays water-based fire extinguishing agent into small particles by spraying to the external space,
- a large particle injection nozzle that is arranged on the outside coaxially with the small particle injection nozzle, and converts the particles into a particle having a large particle diameter by spraying into an external space of a water-based fire extinguishing agent;
- a water swirling core for swirling the water flow supplied to the small particle diameter injection nozzle;
- a water swirl spiral that swirls the water flow supplied to the large particle diameter injection nozzle;
- An induction electrode portion arranged on the injection space side of the injection nozzle;
- a water-side electrode portion arranged on the inflow side of each injection nozzle and in contact with a water-based fire extinguishing agent;
- the voltage application unit applies an external electric field generated by applying a voltage between the induction electrode unit and the water-side electrode unit to a water-based fire extinguisher in the injection process by the small particle injection
- the electrostatic spraying head has a large particle diameter injection nozzle that converts and sprays water-based extinguishing agent into particles of the first particle diameter by spraying to the external space, A small particle injection nozzle that is arranged on the outer side coaxially with the large particle diameter injection nozzle, and converts the particles into small particles by spraying the water-based extinguishing agent into the external space; A water swirling core for swirling the water flow supplied to the large particle diameter injection nozzle; A water swirl spiral that swirls the water flow supplied to the small particle diameter injection nozzle; An induction electrode portion arranged on the injection space side of the injection nozzle; A water-side electrode portion arranged on the inflow side of each injection nozzle and in contact with a water-based fire extinguishing agent; With The voltage application unit applies an external electric field generated by applying a voltage between the induction electrode unit and the water-side electrode unit to the water-based fire extinguisher in the injection process by the small particle injection nozzle and the large particle injection nozzle. The charged particles are
- the electrostatic spraying head has a rotating spray nozzle that rotates by spraying water-based fire extinguishing agent into the external space, A nozzle slit for small particles that is opened in a rotary spray nozzle and is converted into particles having a small particle diameter by spraying into the external space of an aqueous fire extinguishing agent; A nozzle slit for a large particle that is opened in a rotary spray nozzle and is converted into a particle having a large particle size by spraying into an external space of an aqueous fire extinguishing agent, An induction electrode portion arranged on the injection space side of the injection nozzle; A water-side electrode portion disposed on the inflow side of the rotary spray nozzle and in contact with the water-based fire extinguishing agent; With The voltage application unit applies an external electric field generated by applying a voltage between the induction electrode unit and the water-side electrode unit to a water-based fire extinguisher that is in the process of being injected by the small particle nozzle s
- the electrification spray head charges the extinguishing agent particles included in a predetermined particle diameter range positively or negatively.
- a water-based charged extinguishing agent particle group in which a relatively small particle size and a relatively large particle size included in a predetermined particle size range, for example, a range from 30 ⁇ m to 2000 ⁇ m, are mixed from the charging spray head.
- a group of extinguishing agent particles having a small average particle size in the range of 30 ⁇ m to 200 ⁇ m which has a high fire extinguishing effect and a smoke extinguishing effect, and a large average particle size in the range of 200 ⁇ m to 2000 ⁇ m having a large flight distance It can be spread over a wide range by convection of air by the extinguishing agent particles.
- a fire extinguisher particle group with a small particle diameter can provide a sufficient fire extinguishing effect.
- a large-scale fire suddenly occurs. May start with The amount of heat generated by such a fire is large, and it is necessary to put in a relatively large amount of fire extinguishing agent (water) that cannot be defeated by the fire source.
- Large particle extinguishing agents have the effect of weakening the fire against such fires.
- small extinguishing agent particles have the effect of extinguishing the gaps and shadows by wrapping them around with the Coulomb force to extinguish the fire, and high fire extinguishing performance can be obtained even in an arson fire.
- Explanatory drawing which showed embodiment of the fire disaster prevention equipment by this invention Explanatory drawing which took out and showed the protection area A of FIG.
- Explanatory drawing which showed 1st Embodiment of the charging spreading head by this invention Explanatory drawing which showed 2nd Embodiment of the charging spreading head by this invention.
- Explanatory drawing which showed 3rd Embodiment of the charging spreading head by this invention Explanatory drawing which showed 4th Embodiment of the charging spreading head by this invention.
- FIG. 1 is an explanatory view showing an embodiment of a fire disaster prevention facility according to the present invention.
- a charging spray head 10 according to the present embodiment is installed on the ceiling side of protective areas A and B such as a computer room in a building.
- a pipe 16 is connected to the electrostatic spraying head 10 from a protruding side of a pump unit 12 installed with respect to a water source 14 that functions as a fire extinguishing agent supply facility via a manual valve (gate valve) 13. Later, it is connected via a pressure regulating valve 30 and an automatic opening / closing valve 32 to the charging and spreading head 10 installed in each of the protection areas A and B.
- a dedicated fire detector 18 for controlling the spraying from the charging spraying head 10 is installed in each of the protection areas A and B. Further, an interlocking control relay device 20 is provided for each of the protection areas A and B, and a manual operation box 22 for performing spraying control from the charging spraying head 10 by manual operation is provided.
- a signal line from the dedicated fire detector 18 and the manual operation box 22 is connected to the interlock control relay device 20, and a signal line for applying a voltage for charging driving to the charging spraying head 10, and A signal line for opening / closing the automatic opening / closing valve 32 is drawn out.
- a fire detector 26 of an automatic fire alarm facility is installed and connected to a sensor line 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. Further, the system monitoring control panel 24 connects the pump unit 12 to the signal line and controls the pump start / stop in 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.
- a pipe 16 from the pump unit 12 shown in FIG. 1 is connected to the electrification spraying head 10 via a pressure regulating valve 30 and an automatic opening / closing valve 32.
- 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.
- FIG. 3 shows a first embodiment of the charging and spreading head 10 shown in FIGS. 1 and 2
- FIG. 3 (A () is a cross-section
- FIG. 3 (B) is a plan view seen from below
- FIG. The electrode is taken out and shown.
- the charging / dispersing head 10 is composed of a small particle head portion 10A and a large particle head portion 10B, and both are arranged side by side adjacent to each other.
- the electrostatic spraying head 10 emits a water-based fire extinguisher in which a relatively small particle size and a relatively large particle size included in a predetermined particle size range are mixed.
- the charging spray head 10 emits a water-based fire extinguisher in which a relatively small particle diameter and a relatively large particle diameter included in a range from 30 ⁇ m to 2000 ⁇ m are mixed.
- the small particle head portion 10A radiates a group of extinguishing agent particles having an average particle size in the range of 30 ⁇ m to 200 ⁇ m
- the large particle size head portion 10B has extinguishing agent particles having an average particle size in the range of 200 ⁇ m to 2000 ⁇ m. Radiate a group.
- the structure of the small particle head portion 10A is as follows. 10 A of small particle heads screw and fix the head main body 36a to the front-end
- the grounding cable 50a is drawn out from the voltage application unit 15 installed in the upper portion of the water side electrode unit 40a and installed inside the head body 36a via the insulating member 41a. It is connected to the water side electrode part 40a. With the connection by the ground cable 50a, the water-side electrode portion 40a has an applied voltage of 0 volts and is dropped to the ground side.
- a small particle injection nozzle 38a is provided below the water side electrode portion 40a.
- the small particle injection nozzle 38a includes a water flow turning core 37a provided inside the water side electrode portion 40a and a nozzle head 39a provided on the tip side.
- the small particle injection nozzle 38a receives supply of the water-based fire extinguisher pressurized from the pump unit 12 of FIG. 1 from the falling pipe 34a, passes through the head main body 36a, and is injected from the nozzle head 39a to the outside. Then, the water-based fire extinguishing agent is converted into small particles having an average particle diameter in the range of 30 ⁇ m to 200 ⁇ m and sprayed.
- the spray pattern sprayed from the small particle spray nozzle 38a has a so-called full cone shape.
- the cover 42a using an insulating material is fixed to the small particle injection nozzle 38a with a screw through a fixing member 43a.
- the cover 42a is a substantially cylindrical member, and a ring-shaped induction electrode portion 44a is incorporated into the lower opening by screwing a stopper ring 46a.
- the induction electrode portion 44a has an opening 54a through which the injection particles from the small particle injection nozzle 38a pass in the center of the ring-shaped main body.
- the electrode application cable 48a is drawn out from the upper voltage application portion 15 shown in FIG. 2, and the electrode application cable 48a is a cover 42a made of an insulating material. Is connected to the induction electrode portion 44a so that a voltage can be applied.
- conductive metal in addition to the conductive metal, conductive resin, conductive It may be a rubber or a combination thereof.
- the voltage application unit 15 shown in FIG. 2 is operated by a control signal from the interlock control relay device 20 shown in FIG.
- the water-side electrode portion 40a and the induction electrode portion 44a when a voltage of, for example, several kilovolts is applied between the water-side electrode portion 40a and the induction electrode portion 44a, an external electric field is generated between the electrodes due to this voltage application, and the water-based fire extinguishing from the small particle injection nozzle 38a.
- the sprayed small particles are charged through the spraying process in which the agent is converted into sprayed small particles having an average particle diameter in the range of 30 ⁇ m to 200 ⁇ m, and the charged sprayed small particles can be dispersed outside.
- the structure of the large particle head portion 10B is basically the same as that of the small particle head portion 10A, but differs in that it emits a group of extinguishing agent particles having an average particle diameter in the range of 200 ⁇ m to 2000 ⁇ m.
- the head main body 36b is screwed and fixed to the tip of the falling pipe 34b connected to the pipe from the pump unit 12.
- the head main body 36b is provided with a pressure limiting orifice 55 on the inner side. By passing through the pressure limiting orifice 55, the water pressure in the nozzle head 39a is greatly reduced, and injection with a large particle diameter is obtained.
- a cylindrical water-side electrode portion 40b is incorporated inside the tip end of the head body 36b via an insulating member 41b.
- the ground cable 50b is drawn out from the voltage application portion 15 installed at the upper portion, and is installed inside the head main body 36b via the insulating member 41b. It is connected to the water side electrode part 40b. With the connection by the ground cable 50b, the water-side electrode portion 40b has an applied voltage of 0 volts and is dropped to the ground side.
- a large particle injection nozzle 38b is provided below the water side electrode portion 40b.
- the large particle injection nozzle 38b includes a water flow swirling core 37b provided inside the water side electrode portion 40b and a nozzle head 39b provided on the tip side.
- the large particle injection nozzle 38b receives the supply of the water-based fire extinguisher pressurized from the pump unit 12 of FIG. 1 from the falling pipe 34b, passes through the head body 36b, and passes through the pressure limiting orifice 55 to the nozzle head 39b.
- the water-based fire extinguishing agent is converted into large particles having an average particle diameter in the range of 200 ⁇ m to 2000 ⁇ m and sprayed.
- the spray pattern sprayed from the large particle spray nozzle 38b has a so-called full cone shape.
- the cover 42b using an insulating material is fixed to the large particle injection nozzle 38b by screws with a fixing member 43b.
- the cover 42b is a substantially cylindrical member, and a ring-shaped induction electrode portion 44b is incorporated into the lower opening by screwing a stopper ring 46b.
- the induction electrode portion 44b has an opening 54b through which the injection particles from the large particle injection nozzle 38b pass in the center of the ring-shaped main body.
- the electrode application cable 48b is drawn out from the upper voltage application portion 15 shown in FIG. 2, and the electrode application cable 48b is a cover 42b made of an insulating material. And is connected to the induction electrode portion 44b so that a voltage can be applied.
- a conductive material in addition to a conductive metal, a conductive resin, a conductive material is used. It may be a rubber or a combination thereof.
- the voltage application unit 15 shown in FIG. 2 is operated by a control signal from the interlock control relay device 20 shown in FIG.
- the large jet particles are charged through an injection process in which the agent is converted into large jet particles having an average particle diameter in the range of 200 ⁇ m to 2000 ⁇ m, and the charged large jet particles can be dispersed outside.
- a small number of charged spraying heads 10 can spray a fire extinguisher mixed with small particles and large particles over the entire protective compartment.
- the spraying of the extinguishing agent particle group by the large particle head portion 38b is performed by the pressure limiting orifice 55, for example, when the pressure is reduced to about 0.1 Mp even when the pressure of about 1.0 Mp is supplied.
- the extinguishing agent particle diameter can be dispersed in the range of about 4 meters with a large particle diameter of 1000 ⁇ m to 2000 ⁇ m. Small extinguishing agent particle groups of 30 ⁇ m to 200 ⁇ m sprayed at a pressure of about 1.0 Mp can be reliably sprayed over a wide range of about 4 meters.
- 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 and control panel 24 receives a notification from the dedicated fire detector 18 installed in the protection area A, the pump unit 12 is activated, fire-extinguishing water is pumped from the water source 14 and pressurized by the pump unit 12, Supply.
- 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 passed through the opened automatic opening / closing valve 32. It is supplied to the charging spraying head 10 and sprayed as spray particles 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. 2, and the voltage application unit 15 receives the activation signal, for example, to the charge distribution head 10.
- An applied voltage that is DC, AC, or pulsed, which is several kilovolts, is supplied.
- the water system pressurized from each of the small particle injection nozzle 38a of the small particle head portion 10A and the large particle injection nozzle 38b of the large particle head portion 10B.
- the water-side electrode portions 40a and 40b to which the ground cables 50a and 50b are connected are set to 0 volts, and the induction electrode portion 44a to which the voltage application cables 48a and 48b are connected.
- 44b is applied with a voltage of several kilovolts, and external electrolysis generated by this voltage application is injected from the small particle injection nozzle 38a and the large particle injection nozzle 38b and passes through the openings 54a, 54b of the induction electrode portions 44a, 44b.
- Apply to a water-based fire extinguisher in the process of spraying charge the fire extinguisher small particles and fire extinguisher large particles converted by spraying, mix and spray Door can be.
- a large group of extinguishing agent particles are sprayed from the electrostatic spraying head 10 toward the protection area A where the fire F is generated, and a large group of extinguishing agent particles of 200 to 2000 ⁇ m are sprayed.
- a small particle group of 30 to 200 ⁇ m of fire extinguisher can be conveyed and reliably spread over a wide range by convection of air generated by spraying a large group of fire extinguishing agent large particles of 1000 to 2000 ⁇ m.
- the small particle group of 30 to 200 ⁇ m of extinguishing agent since the small particle group of 30 to 200 ⁇ m of extinguishing agent is charged, it adheres efficiently to the high-temperature combustion source caused by the fire F due to the coulomb force caused by charging, and at the same time, the adhering to all surfaces of the combusting agent occurs. Compared to the case where charged water particles are sprayed, the wetting effect on the combustion agent is greatly increased, and a high fire extinguishing ability is exhibited.
- the water side electrode portions 40a and 40b are set to 0 volts, and a positive voltage is applied to the ring-shaped induction electrode portions 44a and 44b.
- the sprayed water particles are sprayed with only a negative charge.
- the smoke generated by the fire F is efficiently extinguished by transporting and spraying the fire extinguishing agent small particle group charged from the electrification spraying head 10 to the protection area A by the air flow generated by the spraying of the fire extinguishing agent large particle group. A smoke eliminating effect is obtained.
- the smoke extinguishing effect in the present embodiment is that the conventional smoke extinguishing effect due to the dispersion of water particles is a capturing action due to a stochastic collision between water particles and smoke particles.
- the smoke particles that are also in the charged state are collected by the Coulomb force, thereby exerting a significant smoke eliminating action.
- FIG. 4 is a second embodiment of the charging / spreading head 10 shown in FIGS. 1 and 2, FIG. 4 (A) is a cross-section, FIG. 4 (B) is a plan view from below, and FIG. The induction electrode is taken out and shown.
- a small particle nozzle 38a constituting a small particle head portion and a large particle injection nozzle 38b constituting a large particle head portion are coaxially arranged.
- the charging spray head unit 10 has a head main body 36 screwed and fixed to the tip of a falling pipe 34 connected to the pipe from the pump unit 12.
- a cylindrical water-side electrode portion 40 is incorporated inside the front end of the head main body 36 via an insulating member 41.
- the ground cable 50 is drawn from the voltage application unit 15 installed at the upper portion of the water-side electrode unit 40 and installed inside the head body 36 via an insulating member 41. It is connected to the water side electrode part 40. With the connection by the ground cable 50, the water-side electrode unit 40 has an applied voltage of 0 volts and is dropped to the ground side.
- a small particle injection nozzle 38a is provided below the water-side electrode section 40, and a large particle injection nozzle 38b is provided coaxially on the outside thereof.
- the small particle injection nozzle 38a includes a water swirling core 37a provided inside and a nozzle head 39a provided on the tip side.
- the large particle injection nozzle 38b includes a pressure limiting orifice 55 provided on the outer periphery of the nozzle head 39a located on the inner side, a water flow swirl spiral 56a, and a nozzle head 39b provided on the tip side.
- the small particle ejection head 38a has a small particle nozzle hole 58a formed downward, and the large particle ejection head 38b has a ring-shaped large particle nozzle opening 58b formed on the outside thereof. .
- the small particle injection nozzle 38a receives the supply of the water-based fire extinguisher pressurized from the pump unit 12 of FIG. 1 from the falling pipe 34, passes through the head main body 36, and a part of the nozzle head 39a to the outside.
- the water-based fire extinguishing agent is converted into small particles having an average particle diameter in the range of 30 ⁇ m to 200 ⁇ m and sprayed.
- the spray pattern sprayed from the small particle spray nozzle 38a has a so-called full cone shape.
- the large particle injection nozzle 38b receives the supply of the water-based fire extinguisher pressurized from the pump unit 12 of FIG. 1 from the falling pipe 34, passes through the head body 36, and passes through the pressure limiting orifice 55 to the nozzle head 39b.
- the water-based fire extinguishing agent is converted into large particles having an average particle diameter in the range of 200 ⁇ m to 2000 ⁇ m and sprayed.
- the spray pattern sprayed from the small particle spray nozzle 38a has a so-called full cone shape.
- the fire extinguishing agent small particle group sprayed from the small particle nozzle hole 58a located on the inner side is conveyed by the air flow generated by the spraying of the fire extinguishing agent large particle group from the large particle nozzle opening 58b located outside, and the fire extinguisher is extinguished.
- the fire extinguishing agent small particle group can be spread over a wide range together with the large particle group, and the fire extinguishing agent in which small particles and large particles are mixed can be sprayed over the entire protective compartment with a small number of charged spraying heads 10.
- the cover 42 using an insulating material is fixed to the small particle injection nozzle 38a by screws with a fixing member 43 interposed therebetween.
- the cover 42 is a substantially cylindrical member, and a ring-shaped induction electrode portion 44 is incorporated into the lower opening by screwing a stopper ring 46.
- the induction electrode portion 44 has an opening 54 through which the injection particles from the small particle injection nozzle 38a and the large particle injection nozzle 38b pass in the center of the ring-shaped main body.
- An electrode application cable 48 is drawn out from the upper voltage application unit 15 shown in FIG. 2 to the induction electrode unit 44 arranged at the lower part of the cover 42, and the electrode application cable 48 penetrates the cover 42 made of an insulating material. Then, it is connected to the induction electrode portion 44 so that a voltage can be applied.
- the voltage application unit 15 shown in FIG. 2 When spraying a water-based fire extinguishing agent from the small particle injection nozzle 38a and the large particle injection nozzle 38b, the voltage application unit 15 shown in FIG. 2 operates in accordance with a control signal from the interlock control relay device 20 shown in FIG.
- the water-side electrode portion 40 is set to the ground side where the voltage is 0 volts, and a DC, AC, or pulsed applied voltage not exceeding 20 kilovolts is applied to the ring-shaped induction electrode portion 44, for example.
- the small particle injection nozzle 38a when a voltage of, for example, several kilovolts is applied between the water-side electrode portion 40 and the ring-shaped induction electrode portion 44, an external electric field is generated between the two electrodes due to this voltage application, and the small particle injection nozzle 38a generates an aqueous system.
- the small spray particles are charged through an injection process in which the fire extinguisher is converted into small spray particles having an average particle size in the range of 30 ⁇ m to 200 ⁇ m, and at the same time, the water-based fire extinguisher is in the range of 200 ⁇ m to 2000 ⁇ m from the large particle spray nozzle 38b.
- the sprayed large particles are charged through the spraying process of being converted into sprayed large particles having an average particle diameter, and the charged extinguishing agent small particle group and the extinguishing agent large particle group can be mixed and sprayed to the outside.
- the head is downsized to reduce the installation space and cost compared to the first embodiment in which the small particle injection nozzle 38a and the large particle injection nozzle 38b are arranged adjacent to each other. be able to.
- FIG. 5 shows a third embodiment of the charging / spreading head 10 shown in FIGS. 1 and 2
- FIG. 5 (A) is a cross-section
- FIG. 5 (B) is a plan view from below
- FIG. The induction electrode is taken out and shown.
- the charging spray head 10 of the third embodiment is arranged with the large particle injection nozzle 38b at the center and the small particle injection nozzle 38a on the outside, contrary to the second embodiment of FIG. It is characterized by being arranged coaxially.
- the large particle injection nozzle 38b located at the center is composed of a pressure limiting orifice 55 provided inside, a water flow swirling core 37b, and a nozzle head 39b provided on the tip side.
- the small particle injection nozzle 38a provided on the outer side includes a water flow swirl helix 56b provided on the outer periphery of the nozzle head 39b located on the inner side and a nozzle head 39a provided on the tip side.
- the large particle ejection head 38b on the inner side forms a large particle nozzle hole 60b downward
- the outer small particle ejection head 38a has a ring-shaped small particle nozzle opening 60a on the outer side. Forming.
- the small particle injection nozzle 38 a receives the supply of the water-based fire extinguisher pressurized from the pump unit 12 of FIG. 1 from the falling pipe 34 and passes through the head body 36. Then, when a part of the nozzle head 39a is jetted to the outside, the water-based fire extinguishing agent is converted into small particles having an average particle diameter in the range of 30 ⁇ m to 200 ⁇ m and sprayed.
- the large particle injection nozzle 38 b receives the supply of the water-based fire extinguisher supplied from the pump unit 12 of FIG. 1 from the falling pipe 34, passes through the head body 36 and passes through the pressure limiting orifice 55.
- the water-based fire extinguishing agent is converted into large particles having an average particle diameter in the range of 200 ⁇ m to 2000 ⁇ m and sprayed.
- the fire extinguishing agent small particle group sprayed from the small particle nozzle opening 60a located outside is conveyed by the air flow generated by the spraying of the fire extinguishing agent large particle group from the large particle nozzle opening 60b located inside, and the fire extinguishing agent
- the fire extinguishing agent small particle group can be spread over a wide range together with the large particle group, and the fire extinguishing agent in which small particles and large particles are mixed can be sprayed over the entire protective compartment with a small number of charged spraying heads 10.
- the water-based fire extinguishing agent is reduced from 30 ⁇ m to 200 ⁇ m from the small particle injection nozzle 38a.
- the small injection particles are charged through the injection process converted into the small injection particles having the average particle size in the range, and at the same time, the large injection particles having the average particle size in the range from 200 ⁇ m to 2000 ⁇ m of the water-based fire extinguishing agent from the large particle injection nozzle 38b.
- the sprayed large particles are charged through the spraying process to be converted into particles, and the charged fire extinguishing agent small particle group and the extinguishing agent large particle group can be mixed and dispersed outside.
- the head can be downsized and installed space compared to the first embodiment of FIG. Cost can be reduced.
- the extinguishing agent small particle group dispersed from the small particle injection nozzle 38a located on the outer side is replaced with the extinguishing agent large particle group. It can be conveyed so as to be spread by the air flow generated by spraying, and the fire extinguisher small particle group can be efficiently conveyed.
- FIG. 6 shows a fourth embodiment of the charging and spreading head 10 shown in FIGS. 1 and 2
- FIG. 6 (A) is a cross section
- FIG. 6 (B) is a plan view from below
- FIG. The induction electrode is taken out and shown.
- the charging / dispersing head 10 of the fourth embodiment is characterized in that the head nozzles constituting the small particle head portion and the large particle head portion 10B are the rotary spray nozzles 62. That is, the charging spray head unit 10 is screwed and fixed to the tip of the falling pipe 34 connected to the pipe from the pump unit 12.
- a cylindrical water-side electrode portion 40 is incorporated inside the front end of the head main body 36 via an insulating member 41.
- the ground cable 50 is drawn from the voltage application unit 15 installed at the upper portion of the water-side electrode unit 40 and installed inside the head body 36 via an insulating member 41. It is connected to the water side electrode part 40. With the connection by the ground cable 50, the water-side electrode unit 40 has an applied voltage of 0 volts and is dropped to the ground side.
- a rotary spray nozzle 62 is provided below the water-side electrode unit 40.
- the rotary spray nozzle 62 is rotatably mounted inside the fixed member 43 via a bearing 64, and another fixed member 66 is disposed between the water-side electrode 40.
- two sets of small particle injection slits 68 and large particle injection slits 70 are formed in the rotary injection nozzle 62 at positions offset from the rotation center.
- the small particle injection slit 68 receives the supply of the water-based fire extinguisher supplied from the pump unit 12 of FIG. 1 from the falling pipe 34 and passes the head main body 36 to spray the water-based fire-extinguishing agent. Is converted into small particles having an average particle diameter in the range of 30 ⁇ m to 200 ⁇ m and dispersed.
- the large particle injection slit 70 receives the supply of the water-based fire extinguisher pressurized from the pump unit 12 of FIG. 1 from the falling pipe 34 and passes through the head body 36 to be ejected to the outside. Is converted into large particles having an average particle diameter in the range of 200 ⁇ m to 2000 ⁇ m and dispersed.
- the small particle injection slit 68 and the large particle injection slit 70 are formed obliquely with respect to the thickness direction. For this reason, the rotary injection nozzle 62 is swung by the ejection of the fire extinguishing agent from the small particle injection slit 68 and the large particle injection slit 70. Sprinkle fire extinguishing agent small particle group and extinguishing agent large particle group spirally.
- the fire extinguishing agent small particle group dispersed from the small particle ejecting slit 68 is conveyed by the air flow generated by the spraying of the extinguishing agent large particle group from the large particle ejecting slit 70, and the extinguishing agent small particle together with the extinguishing agent large particle group.
- the group can be spread over a wide range, and with a small number of charged spraying heads 10, a fire extinguisher in which small particles and large particles are mixed can be sprayed over the entire protective compartment.
- a cover 42 made of an insulating material is fixed to the head main body 36 with a screw through a fixing member 43.
- the cover 42 is a substantially cylindrical member, and a ring-shaped induction electrode portion 44 is incorporated into the lower opening by screwing a stopper ring 46.
- the induction electrode portion 44 has an opening 54 through which the injection particles from the small particle injection slit 68 and the large particle injection slit 70 pass in the center of the ring-shaped main body.
- An electrode application cable 48 is drawn out from the upper voltage application unit 15 shown in FIG. 2 to the induction electrode unit 44 arranged at the lower part of the cover 42, and the electrode application cable 48 penetrates the cover 42 made of an insulating material. Then, it is connected to the induction electrode portion 44 so that a voltage can be applied.
- the voltage application unit 15 shown in FIG. 2 receives a control signal from the interlock control relay device 20 shown in FIG.
- the water-side electrode portion 40 is set to the ground side where the voltage is 0 volts, and an applied voltage that is a direct current, an alternating current, or a pulse shape not exceeding 20 kilovolts is applied to the ring-shaped induction electrode portion 44.
- the large spray particles are charged through a spraying process that is converted into large spray particles having an average particle diameter in the range of 2000 ⁇ m, and the charged fire extinguishing agent small particles and the fire extinguishing agent large particles are mixed by swirling the rotary spray nozzle 62. It can be sprayed in a spiral shape.
- the charging voltage applied to the charging / spreading head is also set to 0 volt for the water-side electrode portion and a plus / minus applied voltage for the induction electrode portion side, a plus-only applied voltage, or a minus-only applied voltage. This can be determined as needed according to the situation on the combustion member side to be extinguished.
- the present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiments.
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Abstract
Description
水系の消火剤を、配管を介して加圧供給する消火剤供給設備と、
防護区域に設置され、消火剤供給設備により加圧供給された水系消火剤の放射粒子に帯電させて散布する帯電散布ヘッドと、
帯電散布する帯電散布ヘッドに帯電電圧を印可する電圧印可部と、
を備えた火災防災設備に於いて、
帯電散布ヘッドは、所定の粒子径範囲に含まれる比較的小さい粒子径と比較的大きい粒子径が混合された水系消火剤を放射するヘッド構造を備えたことを特徴とする。
30μmから200μmの範囲にある平均粒子径の水系消火剤を放射する小粒子径ヘッド部と、
200μから2000μmの範囲にある平均粒子径の水系消火剤を放射する大粒子径ヘッド部と、
を備える。
小粒子径ヘッド部は、
水系の消火剤の外部空間への噴射により小粒子径の粒子に変換して散布する小粒子噴射ノズルと、
噴射ノズルに供給する水流を旋回させる水流旋回用中子と、
噴射ノズルの噴射空間側に配置した誘導電極部と、
噴射ノズルの内部に配置されて水系の消火剤に接触する水側電極部と、
を備え、
大粒子径ヘッド部は、
水系の消火剤の外部空間への噴射により大粒子径の粒子に変換して散布する大粒子噴射ノズルと、
噴射ノズルに供給する水流を旋回させる水流旋回用中子と、
噴射ノズルの噴射空間側に配置した誘導電極部と、
噴射ノズルの内部に配置されて水系の消火剤に接触する水側電極部と、
を備え、
電圧印加部は、小粒子径ヘッド部と大粒子径ヘッド部の誘導電極部と水側電極部との間に電圧を加えることにより生じる外部電界を、小粒子噴射ノズル及び大粒子噴射ノズルにより噴射過程にある水系の消火剤に印加して、噴射粒子を帯電させる。
水系の消火剤の外部空間への噴射により小粒子径の粒子に変換して散布する小粒子噴射ノズルと、
小粒子噴射ノズルと同軸に外側に配置され、水系の消火剤の外部空間への噴射により大粒子径の粒子に変換して散布する大粒子噴射ノズルと、
小粒子径噴射ノズルに供給する水流を旋回させる水流旋回用中子と、
大粒子径噴射ノズルに供給する水流を旋回させる水流旋回用螺旋と、
噴射ノズルの噴射空間側に配置した誘導電極部と、
各噴射ノズルの流入側に配置されて水系の消火剤に接触する水側電極部と、
を備え、
電圧印加部は、誘導電極部と水側電極部との間に電圧を加えることにより生じる外部電界を、小粒子噴射ノズル及び大粒子噴射ノズルにより噴射過程にある水系の消火剤に印加して、噴射粒子を帯電させる。
水系の消火剤の外部空間への噴射により第粒子径の粒子に変換して散布する大粒子径噴射ノズルと、
大粒子径噴射ノズルと同軸に外側に配置され、水系の消火剤の外部空間への噴射により小粒子径の粒子に変換して散布する小粒子噴射ノズルと、
大粒子径噴射ノズルに供給する水流を旋回させる水流旋回用中子と、
小粒子径噴射ノズルに供給する水流を旋回させる水流旋回用螺旋と、
噴射ノズルの噴射空間側に配置した誘導電極部と、
各噴射ノズルの流入側に配置されて水系の消火剤に接触する水側電極部と、
を備え、
電圧印加部は、誘導電極部と水側電極部との間に電圧を加えることにより生じる外部電界を、前記小粒子噴射ノズル及び大粒子噴射ノズルにより噴射過程にある水系の消火剤に印加して、噴射粒子を帯電させる。
水系の消火剤の外部空間への噴射により回転する回転噴射ノズルと、
回転噴射ノズルに開口され、水系の消火剤の外部空間への噴射により小粒子径の粒子に変換して散布する小粒子用ノズルスリットと、
回転噴射ノズルに開口され、水系の消火剤の外部空間への噴射により大粒子径の粒子に変換して散布する大粒子用ノズルスリットと、
噴射ノズルの噴射空間側に配置した誘導電極部と、
回転噴射ノズルの流入側に配置されて水系の消火剤に接触する水側電極部と、
を備え、
電圧印加部は、誘導電極部と水側電極部との間に電圧を加えることにより生じる外部電界を、小粒子用ノズルスリット及び大粒子用ノズルスリットにより噴射過程にある水系の消火剤に印加して、噴射粒子を帯電させる。
10A:小粒子ヘッド部
10B:大粒子ヘッド部
12:ポンプユニット
13:手動弁
14:水源
15:電圧印加部
16:配管
18:専用火災感知器
20:連動制御中継装置
22:手動操作箱
24:システム監視制御盤
26:火災感知器
28:受信機
30:調圧弁
32:自動開閉弁
34:立下り配管
36,36a,36b:ヘッド本体
37a,37b:水流旋回用中子
38,68:噴射ノズル
38a:小粒子噴射ノズル
38b:大粒子噴射ノズル
39a,39b:ノズルヘッド
40,40a,40b:水側電極部
41,41a,41b:絶縁部材
43,43a,43b,66:固定部材
42,42a,42b:カバー
44,44a,44b:誘導電極部
45,45a,45b,54,54a,54b:開口
46,46a,46b:ストッパリング
48,48a,48b:電圧印加ケーブル
52a,58a:小粒子ノズル穴
52b,60b:大粒子ノズル穴
55:圧力制限オリフィス
56a,56b:水流旋回用螺旋
58b:大粒子ノズル開口
60a:小粒子ノズル開口
62: 回転噴射ノズル
64:ベアリング
68:小粒子噴射スリット
70:大粒子噴射スリット
Claims (8)
- 水系の消火剤を、配管を介して加圧供給する消火剤供給設備と、
防護区域に設置され、前記消火剤供給設備により加圧供給された水系消火剤の放射粒子に帯電させて散布する帯電散布ヘッドと、
前記帯電散布する帯電散布ヘッドに帯電電圧を印可する電圧印可部と、
を備えた火災防災設備に於いて、
前記帯電散布ヘッドは、所定の粒子径範囲に含まれる比較的小さい粒子径と比較的大きい粒子径が混合された水系消火剤を放射するヘッド構造を備えたことを特徴とする火災防災設備。
- 請求項1記載の火災防災設備に於いて、前記帯電散布ヘッドは、30μmから2000μmまでの範囲に含まれる比較的小さい粒子径と比較的大きい粒子径が混合された水系消火剤を放射することを特徴とする火災防災設備。
- 請求項1記載の火災防災設備に於いて、前記帯電散布ヘッドは、
30μmから200μmの範囲にある平均粒子径の水系消火剤を放射する小粒子径ヘッド部と、
200μから2000μmの範囲にある平均粒子径の水系消火剤を放射する大粒子径ヘッド部と、
を備えたことを特徴とする火災防災設備。
- 請求項2記載の火災防災設備に於いて、前記帯電散布ヘッドは、前記小粒子ヘッド部と大粒子ヘッド部を横に並べて隣接配置し、
前記小粒子径ヘッド部は、
水系の消火剤の外部空間への噴射により小粒子径の粒子に変換して散布する小粒子噴射ノズルと、
前記噴射ノズルに供給する水流を旋回させる水流旋回用中子と、
前記噴射ノズルの噴射空間側に配置した誘導電極部と、
前記噴射ノズルの内部に配置されて水系の消火剤に接触する水側電極部と、
を備え、
前記大粒子径ヘッド部は、
水系の消火剤の外部空間への噴射により大粒子径の粒子に変換して散布する大粒子噴射ノズルと、
前記噴射ノズルに供給する水流を旋回させる水流旋回用中子と、
前記噴射ノズルの噴射空間側に配置した誘導電極部と、
前記噴射ノズルの内部に配置されて水系の消火剤に接触する水側電極部と、
を備え、
前記電圧印加部は、前記小粒子径ヘッド部と大粒子径ヘッド部の前記誘導電極部と水側電極部との間に電圧を加えることにより生じる外部電界を、前記小粒子噴射ノズル及び大粒子噴射ノズルにより噴射過程にある水系の消火剤に印加して、噴射粒子を帯電させることを特徴とする火災防災設備。
- 請求項2記載の火災防災設備に於いて、前記帯電散布ヘッドは
水系の消火剤の外部空間への噴射により小粒子径の粒子に変換して散布する小粒子噴射ノズルと、
前記小粒子噴射ノズルと同軸に外側に配置され、水系の消火剤の外部空間への噴射により大粒子径の粒子に変換して散布する大粒子噴射ノズルと、
前記小粒子径噴射ノズルに供給する水流を旋回させる水流旋回用中子と、
前記大粒子径噴射ノズルに供給する水流を旋回させる水流旋回用螺旋と、
前記噴射ノズルの噴射空間側に配置した誘導電極部と、
前記各噴射ノズルの流入側に配置されて水系の消火剤に接触する水側電極部と、
を備え、
前記電圧印加部は、前記誘導電極部と水側電極部との間に電圧を加えることにより生じる外部電界を、前記小粒子噴射ノズル及び大粒子噴射ノズルにより噴射過程にある水系の消火剤に印加して、噴射粒子を帯電させることを特徴とする火災防災設備。
- 請求項2記載の火災防災設備に於いて、前記帯電散布ヘッドは
水系の消火剤の外部空間への噴射により大粒子径の粒子に変換して散布する大粒子径噴射ノズルと、
前記大粒子径噴射ノズルと同軸に外側に配置され、水系の消火剤の外部空間への噴射により小粒子径の粒子に変換して散布する小粒子噴射ノズルと、
前記大粒子径噴射ノズルに供給する水流を旋回させる水流旋回用中子と、
前記小粒子径噴射ノズルに供給する水流を旋回させる水流旋回用螺旋と、
前記噴射ノズルの噴射空間側に配置した誘導電極部と、
前記各噴射ノズルの流入側に配置されて水系の消火剤に接触する水側電極部と、
を備え、
前記電圧印加部は、前記誘導電極部と水側電極部との間に電圧を加えることにより生じる外部電界を、前記小粒子噴射ノズル及び大粒子噴射ノズルにより噴射過程にある水系の消火剤に印加して、噴射粒子を帯電させることを特徴とする火災防災設備。
- 請求項2記載の火災防災設備に於いて、前記帯電散布ヘッドは
水系の消火剤の外部空間への噴射により回転する回転噴射ノズルと、
前記回転噴射ノズルに開口され、水系の消火剤の外部空間への噴射により小粒子径の粒子に変換して散布する小粒子用ノズルスリットと、
前記回転噴射ノズルに開口され、水系の消火剤の外部空間への噴射により大粒子径の粒子に変換して散布する大粒子用ノズルスリットと、
前記噴射ノズルの噴射空間側に配置した誘導電極部と、
前記回転噴射ノズルの流入側に配置されて水系の消火剤に接触する水側電極部と、
を備え、
前記電圧印加部は、前記誘導電極部と水側電極部との間に電圧を加えることにより生じる外部電界を、前記小粒子用ノズルスリット及び大粒子用ノズルスリットにより噴射過程にある水系の消火剤に印加して、噴射粒子を帯電させることを特徴とする火災防災設備。
- 請求項1乃至7記載の火災防災設備に於いて、前記帯電散布ヘッドは、所定の粒子径範囲に含まれる消火剤粒子を、プラス又はマイナスに帯電させることを特徴とする火災防災設備。
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CN2009801589839A CN102413878B (zh) | 2009-04-27 | 2009-04-27 | 防火设备 |
US13/232,066 US8365836B2 (en) | 2009-04-27 | 2011-09-14 | Fire prevention equipment |
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AU2009337336B2 (en) * | 2009-01-19 | 2012-01-19 | Hochiki Corporation | Fire Prevention Equipment and Spraying Method |
EP2425877B1 (en) * | 2009-04-27 | 2017-09-06 | Hochiki Corporation | Fire prevention equipment |
EP2869900A2 (en) * | 2012-07-03 | 2015-05-13 | Marioff Corporation OY | Fire suppression system |
DE102016212612B4 (de) * | 2016-07-11 | 2020-01-30 | Minimax Gmbh & Co. Kg | Feuerlöschvorrichtung zur Installation in einem Raum und zur Brandbekämpfung in mehreren Sektoren des Raums, sowie Feuerlöschanlage mit selbiger |
TWI799647B (zh) * | 2018-10-02 | 2023-04-21 | 日商高壓股份有限公司 | 液態滅火劑用噴射頭 |
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EP2425877B1 (en) * | 2009-04-27 | 2017-09-06 | Hochiki Corporation | Fire prevention equipment |
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2009
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- 2009-04-27 JP JP2011511198A patent/JP5281155B2/ja active Active
- 2009-04-27 CN CN2009801589839A patent/CN102413878B/zh not_active Expired - Fee Related
- 2009-04-27 WO PCT/JP2009/058246 patent/WO2010125627A1/ja active Application Filing
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2011
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Cited By (1)
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WO2013171880A1 (ja) * | 2012-05-17 | 2013-11-21 | ホーチキ株式会社 | 火災防災装置、帯電散布装置、帯電散布ヘッド、消火剤散布方法及び帯電散布方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2425877A4 (en) | 2014-12-17 |
CN102413878B (zh) | 2013-07-24 |
EP2425877B1 (en) | 2017-09-06 |
US8505641B2 (en) | 2013-08-13 |
US20130119169A1 (en) | 2013-05-16 |
EP2425877A1 (en) | 2012-03-07 |
CN102413878A (zh) | 2012-04-11 |
JPWO2010125627A1 (ja) | 2012-10-25 |
US8365836B2 (en) | 2013-02-05 |
JP5281155B2 (ja) | 2013-09-04 |
US20120000677A1 (en) | 2012-01-05 |
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