JP2019030708A - Gas-based fire-fighting equipment - Google Patents

Abstract

To provide gas-based fire-fighting equipment capable of reducing construction costs and improving a degree of freedom of design.SOLUTION: Gas-based fire-fighting equipment includes a duct 2 for discharging fire extinguisher gas from a protection zone 1 where fire extinguisher gas is introduced, and a quantity increasing part 14 as means disposed to the duct 2 for increasing a flow rate of fire extinguisher gas in the duct 2. The quantity increasing part 14 includes increasing at least either the flow velocity or the density of fire extinguisher gas. The quantity increasing part 14 is disposed either inside the duct 2 or outside the duct 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gas fire extinguishing facility.

  Conventionally, gas fire extinguishing equipment is disclosed in, for example, Japanese Patent Application Laid-Open No. 2014-108185 (Patent Document 1).

JP 2014-108185 A

  Conventional gas fire extinguishing equipment has a problem of high construction cost and low design freedom. Then, this invention was made | formed in order to solve said problem, and it aims at providing the gas fire extinguishing equipment which can reduce construction cost and has a high design freedom. Is.

  The gas fire extinguishing equipment according to the present invention comprises a duct for discharging the fire extinguishing agent gas from the protective section into which the extinguishing agent gas is introduced, and means for increasing the flow rate of the extinguishing gas in the duct. Prepare.

  Preferably, the means for increasing the flow rate of the extinguishing agent gas includes increasing the flow rate and / or density of the extinguishing agent gas.

Preferably, the means for increasing the flow rate of the extinguishing agent gas is provided in the duct.
Preferably, the means for increasing the flow rate of the extinguishing agent gas is provided outside the duct.

  Preferably, the means for increasing the flow rate of the extinguishing agent gas increases the flow rate of the extinguishing agent gas by the fan.

  Preferably, the means for increasing the flow rate of the extinguishing agent gas increases the density of the extinguishing agent gas by cooling the extinguishing agent gas.

  A gas fire extinguishing system according to another aspect of the present invention includes a duct for discharging a fire extinguishing agent gas from a protective compartment into which the fire extinguishing agent gas is introduced, and the duct vertically penetrates a building in which the protective compartment is provided. Connected to the hole.

It is a schematic diagram of the gas fire extinguishing equipment according to Embodiment 1. It is sectional drawing along the II-II line | wire in FIG. It is a schematic diagram which expands and shows a duct. It is a schematic diagram of the gas fire extinguishing equipment according to Embodiment 2. 6 is a schematic diagram of a gas fire extinguishing facility according to Embodiment 3. FIG. It is a schematic diagram of the gas fire extinguishing equipment according to Embodiment 4.

  Embodiments of the present invention will be described below with reference to the drawings. In the following embodiments, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated. Moreover, it is also possible to combine each embodiment.

(Embodiment 1)
The present inventor analyzed the conventional problem, that is, the problem that the construction cost is high and the degree of freedom of design is low in the gas fire extinguishing equipment. As a result, regarding the cost of the gas fire extinguishing equipment and the degree of design freedom, the problem was that the duct cost was high and the degree of design freedom was narrowing.

  Conventional ducts extend from a protected area where extinguishing gas is introduced to the outside of the building having the protected area. If the duct is thinner than before, the construction cost associated with the duct can be reduced.

  Furthermore, since the duct extends in the vertical and / or horizontal direction in the building, the structure of the building is also affected. If the duct is thinner than the conventional one, the duct can be piped in a narrow place where the duct could not be piped conventionally, and the degree of freedom of design is increased.

  Referring to FIGS. 1 to 3, the gas fire extinguishing equipment includes a pipe 3 for sending a fire extinguishing agent gas into the protection section 1 and a duct 2 connected to the protection section 1 for discharging the fire extinguishing agent gas.

  The protective section 1 is a room provided in a building such as a building. In rooms equipped with electronic equipment, water cannot be used for extinguishing fire, and fire extinguishing gas is used to extinguish the fire. It is possible to extinguish the fire by discharging the fire extinguishing gas agent from the injection nozzle 4 to the protective section 1 and filling the inert fire extinguishing gas into the protective section 1 to reduce the oxygen concentration. As the extinguishing agent gas, an inert gas such as nitrogen or argon and a halogen-based gas are used.

  The duct 2 is a gas path for releasing the extinguishing agent gas in the protective section 1 from the protective section 1. The duct 2 is hollow and may be either square or round. A damper 12 is provided at the end of the duct 2 at the pressure relief port 1a of the protection section 1, and the duct 2 and the protection section 1 are communicated and blocked by opening and closing the damper 12. The damper 12 can rotate from the position indicated by the solid line to the position indicated by the dotted line. In this embodiment, only one duct 2 is provided in the protective compartment 1, but a plurality of ducts 2 may be provided.

  The duct 2 is provided with an increasing portion 14 for increasing the flow rate of the extinguishing agent gas in the duct. In this embodiment, the increasing portion 14 is provided at the outlet 13 of the duct 2, but the increasing portion 14 may be provided between the inlet (pressure avoidance port 1 a) and the outlet 13 of the duct 2.

  The increasing portion 14 has a function of discharging the gas in the duct 2 to the outside of the duct 2 by a fan, for example, in order to increase the flow rate of the extinguishing agent gas. The increasing portion 14 generates a negative pressure and increases the pressure gradient between the pressure avoiding port 1 a and the outlet 13, thereby increasing the gas flow rate in the duct 2.

  For example, an emergency power source can be used as the power for driving the increasing portion 14. The increasing portion 14 moves during a fire, and there is a possibility that a normal power source cannot be used. For this reason, it is preferable to use an emergency power source that is different from the normal power source. The increasing portion 14 may be provided in the duct 2 or may be provided outside the duct 2.

  The pipe 3 is a path for sending the extinguishing agent gas from the gas storage container 5 arranged outside the protective section 1 to the protective section 1. The piping 3 is provided with an orifice 6, and the extinguishing agent gas that has passed through the orifice 6 is discharged to the protective section 1 through the injection nozzle 4.

  That is, the gas fire extinguishing equipment includes a duct 2 for discharging the fire extinguishing agent gas from the protective section 1 into which the extinguishing agent gas is introduced, and means for increasing the flow rate of the extinguishing agent gas in the duct 2 provided in the duct 2 And an increase portion 14. The increasing part 14 includes increasing at least one of the flow rate and density of the extinguishing agent gas.

  In the gas fire extinguishing equipment configured as described above, since the flow rate of the extinguishing agent gas can be increased by the increasing portion 14, the cross-sectional area of the duct 2 can be reduced compared to the case where the increasing portion 14 is not provided. Even if it is made small, a sufficient flow rate of the extinguishing agent gas in the duct can be secured. As a result, the duct 2 can be reduced in size, and the construction cost can be reduced.

  Furthermore, by reducing the size of the duct 2, the duct 2 can be piped in a narrow place where the duct 2 could not be piped conventionally. As a result, design freedom increases. Furthermore, the duct 2 can be piped in the dead space of the building where the protective section 1 is provided.

(Embodiment 2)
Referring to FIG. 4, in the gas fire extinguishing equipment according to the second embodiment, a cooling unit 15 for cooling duct 2 is provided. The density of the extinguishing agent gas in the duct 2 is related to the temperature, and the density increases as the temperature decreases. Therefore, by cooling the duct 2 with the cooling unit 15, it is possible to increase the density of the extinguishing agent gas in the duct 2 and increase the flow rate of the extinguishing agent gas in the duct 2.

  The cooling unit 15 cools the duct 2 and is composed of a refrigerant pipe used for air conditioning of the protection section 1, for example. When the air conditioning is cooling, the refrigerant whose temperature has decreased through the capillary can be guided to the cooling unit 15 to reduce the temperature of the duct 2. When the air conditioning is heating, a low-temperature refrigerant having a low enthalpy after providing heat to the room can be guided to the cooling unit 15 to reduce the temperature of the duct 2.

  In this embodiment, the cooling unit 15 is provided over the entire length of the duct 2, but the cooling unit 15 may be provided at least in part. Furthermore, although the cooling part 15 is provided over the perimeter of the duct 2, the cooling part 15 should just be provided in at least one part.

  The gas fire extinguishing equipment configured as described above has the same effect as the gas fire extinguishing equipment according to the first embodiment.

(Embodiment 3)
Referring to FIG. 5, in the gas fire extinguishing equipment according to the third embodiment, a part of pipe 3 is branched to form branch pipe 23, and the branch pipe 23 is led into duct 3. The extinguishing agent gas in the branch pipe 23 is released toward the outlet 13 in the vicinity of the outlet 13 in the duct 2. Thereby, the vicinity of the outlet 13 becomes negative pressure. By increasing the pressure gradient between the pressure avoidance port 1a and the outlet 13, the flow rate of the gas in the duct 2 can be increased.

(Embodiment 4)
Referring to FIG. 6, in the gas fire extinguishing equipment according to the fourth embodiment, duct 2 is connected to hole 30 (shaft) of the building frame.

  In Embodiments 1 to 3, the duct is downsized by increasing the flow rate of the extinguishing agent gas in the duct 2. However, in the fourth embodiment, the total length of the duct 2 is shortened by connecting the holes 30 in the building rather than guiding the outlet 13 of the duct 2 to the outside of the building. This reduces construction costs and increases design flexibility.

  That is, the system fire extinguishing equipment includes a duct 2 for discharging the extinguishing agent gas from the protective section 1 into which the extinguishing agent gas is introduced. Connected.

  Although the embodiment of the present invention has been described above, the embodiment shown here can be variously modified. First, the embodiments can be combined. In particular, Embodiments 1 to 3 can be easily combined.

  Further, regarding the combination of the first to third embodiments and the fourth embodiment, the extinguishing agent gas in a part of the protective section 1 is exhausted through the duct 2 in the first to third embodiments, and the remaining part is used in the embodiment. It is possible to exhaust through the duct 2.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be used in the field of gas fire extinguishing equipment.

DESCRIPTION OF SYMBOLS 1 Protective zone, 1a Pressure-reducing port, 2 Duct, 3 Piping, 4 Injection nozzle, 5 Gas storage container, 6 Orifice, 12 Damper, 13 Outlet, 14 Increase part, 15 Cooling part, 23
Branch pipe, 30 holes.

Claims (7)

A duct for discharging the extinguishing agent gas from the protective compartment into which the extinguishing agent gas is introduced;
A gas-based fire extinguishing facility comprising means for increasing the flow rate of the extinguishing agent gas in the duct provided in the duct.   The gas fire extinguishing equipment according to claim 1, wherein the means for increasing the flow rate of the extinguishing agent gas includes increasing at least one of a flow rate and a density of the extinguishing agent gas.   The gas fire extinguishing equipment according to claim 1, wherein means for increasing the flow rate of the fire extinguishing agent gas is provided in the duct.   The gas fire extinguishing equipment according to claim 1, wherein the means for increasing the flow rate of the extinguishing agent gas is provided outside the duct.   The gas fire extinguishing equipment according to claim 1, wherein the means for increasing the flow rate of the extinguishing agent gas increases the flow rate of the extinguishing agent gas by a fan.   The gas fire extinguishing equipment according to claim 1, wherein the means for increasing the flow rate of the extinguishing agent gas increases the density of the extinguishing agent gas by cooling the extinguishing agent gas. A duct for discharging the extinguishing agent gas from the protective compartment into which the extinguishing agent gas is introduced;
The gas fire extinguishing equipment, wherein the duct is connected to a hole penetrating in a vertical direction through a building in which the protection section is provided.

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