JP2011078484A - Fire extinguishing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide fire extinguishing equipment for efficiently extinguishing a fire. <P>SOLUTION: The fire extinguishing equipment which has a releasing opening 7 releasing a fire extinguishing agent on a subject 1 to be protected for extinguishing a fire source in the subject 1 by the fire extinguishing agent released from the releasing opening 7 is equipped with a bag 20 filled with a fire extinguishing agent which is provided at the end of the releasing opening 7 and is filled with the fire extinguishing agent released from the releasing opening 7 and is configured to cover the fire source with the fire extinguishing agent filled in the bag 20 filled with a fire extinguishing agent when the fire breaks out. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to fire extinguishing equipment used in factories, various dangerous goods facilities, warehouses, parking lots, ship holds, and the like.

In conventional gas fire extinguishing equipment, when a fire breaks out, suffocation extinguishment is performed by radiating and filling an inert gas throughout the protected area where the fire broke out, and reducing the oxygen concentration. In this gas fire extinguishing facility, an appropriate exhaust treatment is taken in order to increase the airtightness by eliminating the opening of the protection area where the inert gas is radiated and to prevent the pressure in the protection area from increasing.
(For example, refer to Patent Document 1.).

JP-A-8-141102

  In the conventional example, since the inert gas is filled in the entire protection area where the fire has occurred, a large amount of inert gas is required, and there is a problem that fire extinguishing cannot be performed efficiently.

  In view of the above circumstances, an object of the present invention is to enable efficient fire extinguishing.

  The present invention provides a fire extinguisher that radiates a fire extinguishing agent in an object to be protected, and extinguishes a fire source in the object to be protected by the fire extinguishing agent emitted from the radiation exit. A fire extinguisher filling bag provided at the tip and filled with the fire extinguishing agent emitted from the radiation port is provided, and the fire source is covered with the fire extinguishing agent filling bag filled with the fire extinguishing agent in the event of a fire.

  The fire extinguisher-filled bag of the present invention is normally stored in a state of being folded by the filling bag holding means in the vicinity of the radiation opening, and the filling bag holding means is released in the event of a fire, and the floor of the object to be protected The filling bag descends to the surface. The filling bag of the present invention is partially dissolved by heat of fire.

  The filling bag according to the present invention is characterized by having a pressure relief hole in the vicinity of the radiation port for making the pressure in the filling bag constant. The fire extinguishing agent according to the present invention is an inert gas having a specific gravity heavier than air.

  The present invention includes a fire extinguisher filling bag provided at the tip of the radiation opening and filled with the fire extinguishing agent radiated from the radiation opening. Since the source is covered, the fire extinguisher can be kept only around the fire source, and the fire can be effectively extinguished with a small amount of the fire extinguisher.

  The fire extinguisher-filled bag according to the present invention is stored in the state of being folded by the filling bag holding means in the vicinity of the radiating port at normal times, and thus does not hinder traffic and work. In addition, since the filling bag of the present invention is partially dissolved by the heat of the fire, even if there is an obstacle on the floor surface of the protection area, a hole is opened in the filling bag, and the fire source is directly covered with a fire extinguishing agent. The fire extinguisher comes into contact with the fire source without any gaps, so the fire can be reliably extinguished.

  Since the filling bag according to the present invention has a pressure relief hole in the vicinity of the radiation opening to make the pressure in the filling bag constant, the pressure relief hole even if the extinguishing agent becomes full in the filling bag. Since the air and the fire extinguishing agent escape from the filling bag, the filling bag does not rupture, the extinguishing agent can be kept locally, and the fire can be extinguished efficiently.

  Since the fire extinguishing agent according to the present invention is an inert gas whose specific gravity is heavier than air, the fire extinguishing agent accumulates in the lower part of the filling bag and is stacked upward. For this reason, the fire extinguishing agent stagnates near the fire source, so that fire extinguishing can be performed efficiently.

It is a front view which shows 1st Embodiment of this invention. It is a principal part enlarged view of FIG.

A first embodiment of the present invention will be described with reference to FIGS.
A fire extinguishing pipe 3 for supplying a fire extinguishing agent, for example, an inert gas having a specific gravity heavier than air, is arranged near the ceiling 2 of the object 1 to be protected, for example, a warehouse. A means, for example, a radiation opening 7 for the extinguishing agent is connected via a heat-sensitive release valve 5. In general, the thermal release valve 5 is a valve that can start water discharge by moving the valve element that has sealed the fire-fighting water by the water pressure of the fire-fighting water when the thermal element feels the heat of fire and decomposes or ruptures. It is. The radiation port 7 is provided in the fire extinguishing pipe 3 a on the downstream side of the heat-sensitive release valve 5. The thermal release valve 5 is a thermal release joint provided with a glass valve, but a thermal release valve using a fusible alloy (fuse) as a thermal element can also be used.

  The radiation ports 7 are equally arranged in a lattice pattern near the ceiling 2 of the protection region (fire extinguishing region) 9, and the heat-sensitive release valves 5 are respectively provided corresponding to the radiation ports 7. The radiation ports 7 do not necessarily need to be arranged evenly. For example, the radiation ports 7 may be provided directly above a place where there is a high possibility of fire, such as a machine tool in a factory. If it does in this way, the number of installation of the radiation opening 7 can be reduced.

  The radiation port 7 of the fire extinguishing pipe 3a is fixed to the top surface 11a of the fixture 11 in a state of protruding into the box-shaped fixture 11 serving as a filling bag holding means, and a nozzle 7a is provided at the tip thereof. ing. The box-shaped fixture 11 is disposed so as to cover the bottom surface and the opening of the ceiling 2, and is fixed to the ceiling 2 by a fixture 13.

  A magnetic cover 15 is provided at the lower end of the box-shaped fixture 11. The cover 15 is formed to have a size that covers the opening of the ceiling 2, and one end of the cover 15 is connected to the box-shaped fixture 11 by a hinge 16, and the other end projects from the box-shaped fixture 11. The magnet 18 is fixed by adsorption. The attractive force of the magnet 18 is appropriately adjusted as necessary. For example, when the inert gas is radiated from the radiating port 7 and the inert gas is filled in the filling bag 20, the magnet 18 is separated by a force that expands. The force of is preferred.

  The mouth part of the extinguishing agent filling bag 20 is fixed to the tip part of the radiant port 7, but when performing the fixing, the confidentiality is ensured so that the extinguishing agent radiated from the radiant port 7 does not leak. For example, the rubber band 21 is fastened and fixed to the nozzle mounting portion of the radiation port 7.

  An outer peripheral surface 20a of the filling bag 20 is formed of a non-combustible material, and a bottom surface 20b of the filling bag 20 is formed of a flame-retardant material, for example, a material that dissolves due to heat from a fire source. A pressure relief hole 23 is provided in the vicinity of the portion, that is, in the vicinity of the radiation port 7.

When the bottom surface 20b is formed of such a flame-retardant material, the bottom surface 20b melts and a hole is formed in the event of a fire, or the bottom surface 20b disappears, so that the fire source is directly covered by the filling bag 20, There is no gap between the fire source and the extinguishing agent generated by the filling bag 20. Therefore, since the supply of oxygen can be cut off by the direct contact between the fire source and the inert gas, the suffocation can be efficiently performed.
Further, by providing the pressure relief hole 23, the pressure in the filling bag 20 can be kept constant even if the extinguishing agent continues to be emitted in the event of a fire, so that the filling bag 20 is not broken by the extinguishing agent.

  When the filling bag 20 is disposed on the side wall surface, that is, the wall surface orthogonal to the ceiling 2, the outer peripheral surface 20a of the filling bag 20 is formed of the flame retardant material, The bottom surface 20b may be formed of the noncombustible material, and the outer peripheral surface 20a may be brought into contact with a fire source and melted.

  The filling bag 20 has a length that allows the bottom surface to descend to the floor surface. In addition, the protection area 9 is formed to have a size that covers a protection range L in which a fire is likely to occur, for example, a range that is larger than a place where the machine tool 25 is disposed. By selecting such a size, even when there is an obstacle such as a machine tool 25 on the floor surface 9a of the protection area 9, the filling bag 20 can be grounded to the floor surface 9a of the protection area 9, so that it is more reliable. Can cover the fire source.

  The filling bag 20 is folded in a small size so as to cover the radiation port 7 in the vicinity of the ceiling 2 and stored in the box-shaped fixture 11 at normal times, that is, during fire monitoring. Is closed by the cover 15, the filling bag 20 is not easily affected by dust. Moreover, since the opening part of the ceiling 2 can be concealed by the cover 15, it is preferable in view of beauty.

  As described above, the filling bag 20 is stored in a folded state in the box-shaped fixture 11, and the lower surface of the fixture 11 is closed by the cover 15 to form a unit (unit). For this reason, since it becomes exchangeable for every group (unit), replacement | exchange of the filling bag 20 becomes easy.

  In FIG. 1, 26 is a receiver, 27 is a pressure switch, 29 is a motor that opens and closes an electromagnetic valve 30, 31 is a regulator, and 32 is a gas cylinder storing an inert gas G, for example, nitrogen gas. Each is shown.

Next, the operation of this embodiment will be described.
The fire extinguishing pipe 3 is always filled with a fire extinguisher having a predetermined pressure (monitoring pressure), and pressure monitoring is performed. As the extinguishing agent, for example, an inert gas G such as nitrogen gas or argon gas having a higher specific gravity than air is used.

  When a fire is generated from the machine tool 25 and the heat-sensitive release valve 5A is operated by the fire heat, the inert gas in the fire extinguishing pipe 3 is jetted downward from the nozzle 7a of the radiation port 7A through the fire extinguishing pipe 3a. . Then, since the monitoring pressure in the fire extinguishing pipe 3 is lowered, the pressure switch 27 is activated and a pressure reducing signal is sent to the receiver 26.

  The receiver 26 sends a valve opening signal to the motor 29 to open the electromagnetic valve 30. As the electromagnetic valve 30 is opened, the inert gas G in the gas cylinder 32 flows into the fire extinguishing pipe 3 and into the fire extinguishing pipe 3a of the radiation port 7A, so that the inert gas G is radiated from the nozzle 7a of the radiation port 7A. The

  When the inert gas G is emitted from the nozzle 7a, the filling bag 20 expands downward while expanding. Therefore, since the cover 15 is pushed downward by the filling bag 20, the other end of the cover 15 is separated from the magnet 18 and rotates downward about the hinge 16. Therefore, the bottom surface of the box-shaped fixture 11 is opened, and the filling bag 20 falls while being filled with the inert gas G.

  At this time, since the machine tool 25 serving as a fire source exists immediately below the filling bag 20, the bottom surface 20 b of the filling bag 20 reaches the floor surface 9 a of the protection area 9 by the machine tool 25. I can't.

  However, although the bottom surface 20b of the filling bag 20 is formed of a flame-retardant material, it melts when it comes into contact with a fire source, and the bottom surface 20b has a hole or the bottom surface 20b disappears. Therefore, the machine tool 25 is covered with the filling bag 20, and the inert gas G is covered while directly contacting the fire source. Further, since the filling bag 20 is formed to be larger than the protection range L, the filling bag 20 contacts the floor surface 9a while covering the machine tool 25. Therefore, since an independent sealed gas fire extinguishing area is formed in the protection area 9, less inert gas G is required, and suffocation can be efficiently performed. Further, the inert gas G accumulates below the filling bag 20 when a gas having a higher specific gravity than air is used. Therefore, oxygen necessary for combustion can be moved above the filling bag 20 and the supply of oxygen can be shut off, so that nitrogen can be efficiently extinguished.

  Since the pressure relief hole 23 is provided in the filling bag 20, the pressure in the filling bag 20 can be kept constant even if the extinguishing agent continues to be emitted in the event of a fire. There is no rupture by the agent.

The embodiment of the present invention is not limited to the above, and may be as follows, for example. (1) The fire extinguishing agent is not necessarily only an inert gas having a specific gravity higher than that of air. For example, a mixed gas obtained by mixing nitrogen gas lighter than air specific gravity with argon gas or carbon dioxide gas having a specific gravity higher than air. It may be used.
(2) Further, it is not always necessary to use only gas. For example, nitrogen gas may be emitted from the two-fluid nozzle into the filling bag together with mist-like water.
(3) Further, instead of filling the filling bag with an inert gas, a foam fire extinguisher may be filled. In the case of using this foam extinguisher, a foam aqueous solution (a fire extinguisher mixed with water and foam stock solution) is radiated from the radiation nozzle toward the foam net to cause foaming. Therefore, detailed description is omitted. In addition, when using a foam fire extinguishing equipment, you may utilize the filling bag similar to the case where it fills with the inert gas G, However In this case, it is good to provide an opening part larger than a pressure relief hole. In addition, the fire extinguisher-filled bag can be formed using a net having a mesh that does not allow bubbles to flow out.
(4) As described above, it is generally necessary for gas fire extinguishing equipment to irradiate and fill the entire protected area with an inert gas to reduce the oxygen concentration to a concentration that can be extinguished. However, in the present invention, since a part of the protection area can be divided by the filling bag, an inert gas mixed in advance with an oxygen concentration that can be extinguished may be released. Thereby, even if there is a person around the filling bag, there is no fear that the oxygen concentration is lowered more than necessary, and thus it is safe.

DESCRIPTION OF SYMBOLS 1 Object to be protected 2 Ceiling 3 Fire extinguishing pipe 7 Radiation port 9 Protection area 11 Box-shaped fixture 20 Filling bag 23 Pressure relief hole L Protection range

Claims (5)

A fire extinguishing facility that includes a radiation opening that radiates a fire extinguishing agent in a protection target, and that extinguishes a fire source in the protection target by the fire extinguishing agent emitted from the radiation opening,
A fire extinguisher filling bag provided at the tip of the radiation opening and filled with the fire extinguishing agent radiated from the radiation opening is covered with the fire extinguisher filling bag filled with the fire extinguishing agent in the event of a fire. Fire extinguishing equipment characterized by that.   The fire-extinguishing agent filling bag is normally stored in a state of being folded by the filling bag holding means in the vicinity of the radiation opening, and in the event of a fire, the filling bag holding means is released to the floor surface of the object to be protected. The fire extinguishing equipment according to claim 1, wherein the filling bag descends.   The fire-extinguishing equipment according to claim 1 or 2, wherein the filling bag is partially dissolved by heat of fire.   The fire-extinguishing equipment according to claim 1, 2, or 3, wherein the filling bag has a pressure relief hole in the vicinity of the radiation port to make the pressure in the filling bag constant.   The fire-extinguishing equipment according to claim 1, 2, 3, or 4, wherein the fire extinguishing agent is an inert gas having a specific gravity heavier than air.

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