JP6656818B2 - Fire extinguisher storage container - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a fire extinguisher storage container, and particularly to a fire extinguisher storage container suitably used for a portable type used for initial fire extinguishing.

  BACKGROUND ART Conventionally, as portable fire extinguishers used for initial fire extinguishing, those using a liquid fire extinguisher such as a water fire extinguisher, a foam fire extinguisher, a powder fire extinguisher, and the like, are widely used.

  By the way, fire extinguishers that use liquid or powder as a fire extinguishing agent have been conventionally used for various fire extinguishing objects because the structure of components such as nozzles and fire extinguisher containers is simple, easy to handle, and easy to store. It was widely used.

  However, in the case of fire extinguishers that use liquids or powders as the fire extinguisher, when fire extinguishing is performed using a fire extinguisher, the liquid or powder fire extinguisher scatters and contaminates the surrounding environment, and it takes time to process the fire. Therefore, it cannot be used for fire extinguishing objects that dislike pollution, especially for equipment equipped with electrical and electronic equipment such as computers, communication equipment, data centers, electrical equipment, etc. Could not be used.

  Therefore, these fire extinguishing targets include gas systems such as carbon dioxide, halides, and inert gases (inert gases such as nitrogen gas and argon, which are used alone or in combination. The same applies hereinafter). Fixed fire extinguishing equipment using a fire extinguisher has been used (for example, see Patent Document 1).

JP-A-8-299492

By the way, fixed-type fire extinguishing equipment that uses gas fire extinguishing agents extinguish fires by filling the entire equipment space where electrical and electronic equipment is installed with gas fire extinguishing agents. If performed, the subsequent treatment requires time and expense, and thus is not necessarily suitable for use in initial fire extinguishing.
That is, for example, when a nitrogen gas fire extinguishing system that uses nitrogen gas as a gas-based fire extinguishing agent, which is a conventional whole-range fire extinguishing system, is installed in a 1000 m ³ section, 26 fire extinguisher storage containers having a volume of 83 L are required. At the start of the system, all fire extinguishing agent storage containers are discharged, and the fire is extinguished by setting the entire compartment to the extinguishing agent concentration (extinguishment concentration) necessary for fire extinguishing. However, even the smallest fires that can be dealt with by the initial fire extinguishing, all the fire extinguishing agent storage containers are released when the system starts up, and it takes time and money to refill and replace them. It was not necessarily suitable for use in

On the other hand, there are portable fire extinguishers that use carbon dioxide or halides as fire extinguishers that are suitable for initial fire extinguishing using gas-based fire extinguishing agents. There is a problem that there is a restriction on the market and restrictions on Ha Long regulations.
In addition, a portable fire extinguisher using inert gas as a fire extinguishing agent, for example, in the case of a typical nitrogen gas as an inert gas, has a smaller specific gravity than other gas-based fire extinguishing agents such as carbon dioxide, Due to the high concentration of the required fire extinguishing agent, even if nitrogen gas is radiated toward the fire extinguishing target, the nitrogen gas diffuses rapidly and it is difficult to concentrate on the fire extinguishing target. It has not been put to practical use because it is easily blown off by the flow of the air current, it is difficult to maintain the required concentration of fire extinguisher, and if there is a fire, it immediately reignites and it is difficult to obtain the fire extinguishing effect.
In particular, when an inert gas is used as a fire extinguishing agent, an adjustment having a depressurizing function to make the pressure (primary pressure) of the nitrogen gas stored at a high pressure in the fire extinguishing agent storage container a pressure (secondary pressure) that is easy to use. Since the fire extinguisher must be provided externally in the fire extinguisher storage container, there is a problem in that this regulator protrudes from the fire extinguisher and reduces the operability and stability of the fire extinguisher.

  The present invention has been made in view of the above-described problems with the conventional portable fire extinguisher used for initial fire extinguishing, and uses inert gas as a fire extinguishing agent, which has no restriction on the fire extinguishing agent or usage method due to the toxicity of the fire extinguishing agent to the human body, thereby improving operability and stability. It is an object of the present invention to provide a fire extinguisher storage container that is particularly preferably used for a portable type used for initial fire extinguishing by improving the property.

In order to achieve the above object, the fire extinguisher storage container of the present invention is a fire extinguisher storage container configured to store a gas-based fire extinguishing agent that uses inert gas as a main component as a fire extinguishing agent. The fire extinguisher is provided by installing the regulator in the fire extinguisher storage container and installing a protector that protects the part exposed to the outside from the fire extinguisher storage container and a radiation direction indicator along the nozzle part. It is characterized by being made portable by a person so that it can be radiated toward a fire extinguishing object .

In this case, the regulator can be incorporated in a container valve and stored and installed in the fire extinguishing agent storage container.
Then, the regulator comprising the constant flow rate valve having the pressure reducing function is arranged such that the valve element is movably disposed in the flow path of the gas-based fire extinguishing agent. The cross-sectional area of the flow path opening formed along the moving direction of the body can be changed.

  Also, the regulator can function in conjunction with an opening device incorporated into the container valve.

  According to the fire-extinguishing agent storage container of the present invention, a gas-based fire-extinguishing agent containing inert gas as a main component as a fire-extinguishing agent is stored in the fire-extinguishing agent storage container, and a regulator having a decompression function is provided in the fire-extinguishing agent storage container. To store and install, specifically, by incorporating the regulator into the container valve and storing and installing in the fire extinguishing agent storage container, the pressure of the nitrogen gas stored at high pressure in the fire extinguishing agent storage container Since the regulator for changing the (primary pressure) to a pressure (secondary pressure) that is easy to use is not exposed to the outside, there is no protrusion of the fire extinguisher, and operability and safety can be improved. , The center of gravity is lowered, and the stability when installed upright can be increased.

  Further, by making the adjuster function in conjunction with the opening device incorporated in the container valve, the mechanism of the control device for controlling the release of the fire extinguishing agent including the adjuster and the opening device and the operation thereof are simplified. , Reliability can be improved.

  The fire extinguisher storage container is configured to be portable by a person so that the fire extinguishing agent can be radiated toward the fire extinguishing target, so that it is suitably used as a portable fire extinguisher used for initial fire extinguishing. be able to.

It is explanatory drawing which shows one Example of the fire extinguisher which applied the fire extinguisher storage container of this invention. 3A and 3B show a nozzle portion of the fire extinguisher, wherein FIG. 3A is an external view as viewed from an opening side, FIG. 3B is an external view as viewed from a connection portion side, and FIG. 3C is a cross-sectional view taken along line XX of FIG. 9 is a graph showing a result of measuring a relationship between a distance from a nozzle and an oxygen concentration when various nozzles are used. It is explanatory drawing which shows the internal structure of the fire extinguisher storage container of the fire extinguisher. It is explanatory drawing which shows the internal structure of the modification of the fire extinguisher storage container of the fire extinguisher. It is an explanatory view showing a modification of the fire extinguisher.

  Hereinafter, an embodiment of a fire extinguisher storage container of the present invention will be described with reference to the drawings.

1 to 4 show an embodiment of a fire extinguisher to which a fire extinguisher storage container of the present invention is applied.
This fire extinguisher 1 uses nitrogen gas, which is a typical inert gas, as a fire extinguishing agent (here, as a fire extinguishing agent, an inert gas other than nitrogen gas, such as argon, or a plurality of types of inert gases including nitrogen gas). Can also be used.) In order to be able to emit a fire extinguishing agent toward a fire extinguishing target, a fire extinguisher storage container 2 to which a nozzle unit 3 for emitting a fire extinguishing agent is connected is used. The nozzle unit 3 is configured to be portable by a person and stores the nitrogen gas in the fire extinguishing agent storage container 2 and the metal porous member 31 is disposed at the outlet of the nitrogen gas flow path. The fire is extinguished by radiating nitrogen gas to the fire extinguishing object through the fire.

In this case, the fire extinguishing agent storage container 2 and the nozzle portion 3 are connected to each other by a rigid connection via the container valve 41.
Note that the fire extinguisher storage container 2 and the nozzle unit 3 do not necessarily need to be connected by a rigid joint. For example, the nozzle unit 3 may be connected to the fire extinguisher storage container 2 via a flexible tube. it can.

  Here, this fire extinguisher 1 uses a nitrogen gas as a fire extinguishing agent, and in order to provide a portable fire extinguisher suitable for initial fire extinguishing, a nozzle unit 3 for emitting a fire extinguishing agent, FIG. As shown in the figure, a nozzle unit 3 is used that allows a fire extinguishing agent radiated toward a fire extinguishing target to travel straight without being diffused and to concentrate and extinguish the fire extinguishing agent to the fire extinguishing target.

  The nozzle portion 3 includes a nozzle body 30 connected to the pipe on the fire extinguishing agent storage container 2 side, and a plurality of nozzles 3 (6 in this embodiment) detachably disposed on a step portion 30 a formed in the internal space of the nozzle body 30. ) Orifice plate 32 formed with a plurality of orifices 32a, a block-shaped metal porous member 31 provided at the outlet of the orifice 32a, through which gas can flow, and a portion of the metal porous member 31 which is open to the atmosphere. A ring member 30b that contacts the peripheral edge of the end face and supports the metal porous member 31 on the nozzle body 30.

The orifice plate 32 in which the plurality of orifices 32a are formed is detachably disposed on a stepped portion 30a formed in the internal space of the nozzle body 30, for example, via screws formed on the stepped portion 30a and the peripheral surface of the orifice plate 32. We are trying to establish.
Thereby, the orifice plate 32 on which the plurality of types of orifices 32a are formed can be selected according to use conditions.
The orifice plate 32 may be omitted, and a similar orifice may be directly formed on the nozzle body 30 (not shown).

The orifice 32a is preferably formed so that the small diameter side of the orifice 32a faces the metal porous member 31.
Thereby, the nitrogen gas is uniformly circulated from the central portion to the peripheral portion of the metal porous member 31, so that the nitrogen gas is uniformly radiated from the entire end surface of the metal porous member 31 which is open to the atmosphere. Can be.

  The metal porous member 31 can be configured with an integral structure, or can be configured with a divided structure including an upstream member 31a and a downstream member 31b as shown in this embodiment.

  The metal porous member 31 is preferably a sintered body made of an inorganic material (metal, metal oxide, metal hydroxide, etc.) having a high shape retention performance, or a porous metal body made of a three-dimensional network structure. Can be used.

The pore diameter of the voids of the material constituting the metal porous member 31 is made of a homogeneous material as well as a material that is changed in the direction in which the gas flows, more specifically, reduced in the direction in which the gas flows. For example, in the present embodiment, it is possible to use a material in which the hole diameter of the gap of the downstream member 31b is smaller than the hole diameter of the gap of the upstream member 31a.
As described above, by reducing the pore diameter of the voids of the material constituting the metal porous member 31 in the direction in which the gas flows, nitrogen gas can be uniformly distributed from the entire end surface of the metal porous member 31 that is open to the atmosphere. Can radiate.

In both cases of the integral structure and the divided structure, the metal porous member 31 has the nozzle body 30 (in this embodiment, the orifice Plate 32), and the end surface of the metal porous member 31 on the side exposed to the atmosphere is connected to the nozzle body 30 via a ring member 30b abutting on the peripheral portion of the end surface. I am trying to be supported.
In this case, the ring member 30b is detachably provided on the nozzle body 30 via screws formed on the peripheral surfaces of the nozzle body 30 and the ring member 30b.
The downstream member 31b constituting the metal porous member 31 is formed to have a larger diameter than the upstream member 31a, and the outer peripheral edge of the downstream member 31b is formed by the edge of the end surface of the nozzle body 30 and the edge of the ring member 30b. By fixing the metal porous member 31 (downstream member 31b) so as to be open to the atmosphere, the metal porous member 31 (downstream member 31b) can have a large opening area (opening diameter), so that the metal porous member 31 can be fired out. The range in which the concentration of the fire extinguishing agent required for extinguishing the emitted nitrogen gas can be set large.
Here, the size of the opening area (opening diameter) of the metal porous member 31 (downstream member 31b) that is open to the atmosphere determines a range in which the concentration of the fire extinguishing agent required for extinguishing the nitrogen gas can be maintained (opening Therefore, the opening diameter is set to 50 mm or more, preferably 70 mm or more, and more preferably 100 mm.

  The fire extinguisher 1 does not contaminate the surrounding environment when the fire extinguisher is extinguished using the fire extinguisher, and there is no toxicity of the fire extinguisher to the human body. While enjoying the characteristics of inert gas (nitrogen gas), the extinguishing agent radiated toward the fire extinguishing target goes straight without diffusing, allowing the extinguishing agent to concentrate and radiate to the extinguishing target. By facilitating the maintenance of the fire extinguishing agent concentration, an effective fire extinguishing effect can be obtained, and it is particularly useful as a portable fire extinguisher suitable for initial fire extinguishing.

FIG. 3 shows the results of measuring the relationship between the distance from the nozzle when various nozzles are used and the oxygen concentration on the central axis in the emission direction of the fire extinguishing agent (nitrogen gas) from the nozzle.
Here, the whole area nozzle is a nozzle formed with one small hole at the tip of the nozzle that emits a fire extinguishing agent (nitrogen gas) toward a fire extinguishing target, and the local nozzle is a nozzle frequently used for carbon dioxide. A plurality of small holes are formed laterally at the tip of the nozzle, the entire tip of the nozzle is covered with a horn, and a fire extinguishing agent (nitrogen gas) is emitted from the opening of the horn toward the fire extinguishing target.
As is clear from FIG. 3, the nozzle of this embodiment has a distance to the fire extinguishing target of 1 to 1.5 m (here, the metal porous member (downstream side) The range can be expanded by increasing the opening diameter D of the member).) It was confirmed that the extinguishing agent concentration (extinguishment concentration) necessary for extinguishing the nitrogen gas can be maintained.

In the fire extinguisher 1 of this embodiment, in a conventional fire extinguishing system using inert gas as a fire extinguishing agent, the pressure (primary pressure) of the nitrogen gas stored at a high pressure in the fire extinguisher storage container 2 is changed to a pressure (easy to use). In order to obtain the secondary pressure, the regulator 43 of the control device 4 for controlling the release of the extinguishing agent, which is provided externally to the extinguishing agent storage container 2, is stored in the extinguishing agent storage container 2. To be installed.
The regulator 43 has a function of reducing the pressure (primary pressure) of the nitrogen gas stored at a high pressure in the fire extinguishing agent storage container 2 to a pressure (secondary pressure) that is easy to use. It is preferable to provide a pressure regulation function for keeping the pressure constant.

  Thereby, since the adjuster 43 of the fire extinguisher 1 is not exposed to the outside, the protrusion of the fire extinguisher 1 is eliminated, operability and safety can be improved, and the center of gravity of the fire extinguisher 1 is lowered, and the fire extinguisher 1 is installed vertically. Stability at the time of doing.

In this case, the regulator 43 is incorporated in the container valve 41 and stored in the fire extinguishing agent storage container 2, and is configured to function in conjunction with the opening device 42 also incorporated in the container valve 41.
The container valve 41 incorporates a safety device 44 having a sealing plate 44a for releasing nitrogen gas when the pressure of the nitrogen gas stored in the fire extinguishing agent storage container 2 rises abnormally.

The opening device 42 incorporated in the container valve 41 includes a sealing plate 42b mounted via a sealing member 42c by a cap nut 42a screwed to the container valve 41, and an opening / closing valve 42d. A spring member 42e, the rear end of which is supported by a nut 42a, is urged in a direction to close the gas flow path following the front end opening 41a of the container valve 41.
The pressure of the nitrogen gas stored in the fire extinguishing agent storage container 2 in the valve chamber 42f is applied to the back of the on-off valve 42d.
Accordingly, when the fire extinguisher 1 is placed in a storage state, the gas flow path following the opening 41a of the container valve 41 is closed by the on-off valve 42d, and the nitrogen gas stored in the fire extinguisher storage container 2 at high pressure is closed. The storage state can be maintained.
On the other hand, when the fire extinguisher 1 is used, the pressure in the valve chamber 42f is reduced by breaking the sealing plate 42b, whereby the balance of the pressure of the nitrogen gas applied to the on-off valve 42d is lost, and the spring member 42e is closed. The on-off valve 42d moves against the urging force, the gas flow path following the front end opening 41a of the container valve 41 is opened, and nitrogen gas is released.

The regulator 43 is formed along the moving direction of the valve body 43b of the valve body support 43c fixed to the container valve 41 by disposing the valve body 43b movably in the nitrogen gas flow path 43a. A constant flow valve configured to change the cross-sectional area of the formed flow path opening 43d.
Here, the pressure receiving area of the surface facing the upstream side and the pressure receiving area of the surface facing the downstream side of the valve body 43b to which the static pressure of the nitrogen gas before the pressure reduction is reduced by the change in the cross-sectional area of the flow path opening 43d are determined. They are made equal to each other (for this reason, the gas pressure chamber 43e formed inside the valve body 43b and the flow path 43a of the nitrogen gas are communicated by a passage 43f formed in the valve body 43b), and By eliminating the surface facing the upstream side and the surface facing the downstream side of the valve body 43b to which the static pressure of the nitrogen gas after the pressure reduction is applied, the force by the static pressure of the nitrogen gas applied in the moving direction of the valve body 43b is balanced. The valve body of the valve body support 43c is configured by balancing the force applied to the valve body 43b by the flow of the nitrogen gas with the biasing force of the spring member 43g for biasing the valve body 43b in a direction that balances the force. 43b The cross-sectional area of the formed along the moving direction flow openings 43d is changed, the flow rate of nitrogen gas regardless pressure change of the nitrogen gas is to be kept constant.

According to the regulator 43 including the constant flow valve, the valve element 43b disposed in the nitrogen gas flow path 43a is operated by the force applied to the valve element 43b by the flow of the nitrogen gas and the urging force of the spring member 43g. By balancing, the cross-sectional area of the flow path opening 43d formed along the moving direction of the valve element 43b is changed so that the flow rate of the nitrogen gas is maintained substantially constant regardless of the change in the pressure of the nitrogen gas. Can be.
This makes it less susceptible to changes in the pressure of the nitrogen gas, and is adaptable to large flow rates.
The spring member 43g is used as urging means for urging the valve body 43b in a direction that balances the force applied to the valve body 43b (a magnet may be used as the urging means), so that the entire structure is obtained. With a simple configuration, the adjuster 43 can be stored and installed in the fire extinguishing agent storage container 2.
Further, since the regulator 43 functions in conjunction with the opening device 42 incorporated in the container valve 41, the mechanism of the control device 4 for controlling the release of the fire extinguishing agent including the regulator 43 and the opening device 41 and the operation thereof are controlled. Simplification and reliability can be improved.

Next, the specification and operation of a specific example of the fire extinguisher 1 will be described.
Weight of fire extinguishing agent storage container (including nozzle part): about 17 kg
Weight of nitrogen gas to be filled: about 4kg
Nitrogen gas filling pressure: about 30MPa
Duration of nitrogen gas emission: about 15 seconds Distance to fire extinguishing target: about 2 m or less Range in which the concentration of fire extinguishing agent required for extinguishing nitrogen gas can be maintained: Open to the atmosphere of the metal porous member (downstream member) of the nozzle Several times the opening area to be formed (opening diameter D of the metal porous member (downstream member) of the present embodiment: about 100 mm)
Metal porous member: Porous metal body composed of a three-dimensional network ("Celmet" (registered trademark) manufactured by Sumitomo Electric Industries, Ltd.)

FIG. 5 shows a modification of the fire extinguisher to which the fire extinguisher storage container of the present invention is applied.
This fire extinguisher 1 differs from the fire extinguisher 1 of the third embodiment in that an opening device 42 incorporated in a container valve 41 is changed. The container valve 41 has a handle 42g, and a spring member 42e formed by the handle 42g. An operating valve 42h operated against the urging force, an operating rod 42j provided integrally with the operating valve 42h, and an opening / closing valve 42d are provided. The opening / closing valve 42d is opened by a spring member 42e at the tip opening of the container valve 41. The gas flow path following 41a is urged to close.
The passages 42k and 42m are formed in the operation rod 42j and the opening / closing valve 42d, so that the pressure at the tip opening 41a of the container valve 41 is applied to the inside of the valve chamber 42f.
Accordingly, when the fire extinguisher 1 is placed in a storage state, the gas flow path following the opening 41a of the container valve 41 is closed by the on-off valve 42d, and the nitrogen gas stored in the fire extinguisher storage container 2 at high pressure is closed. The storage state can be maintained.
On the other hand, when using the fire extinguisher 1, the handle 42 g is operated to move the on-off valve 42 d via the operation valve 42 h and the operation rod 42 j, thereby following the distal end opening 41 a of the container valve 41. The gas flow path is opened, and nitrogen gas is released. Here, even if the operation of the handle 42g is released, the moving state of the on-off valve 42d is maintained by the balance of the pressure of the nitrogen gas applied to the on-off valve 42d.

  Other configurations and operations including the adjuster 43 of this embodiment are the same as those of the fire extinguisher 1 of the above embodiment.

FIG. 6 shows a modification of the fire extinguisher to which the fire extinguisher storage container of the present invention is applied.
The fire extinguisher 1 includes a protector 51 for protecting a portion of the fire extinguisher 1 exposed to the outside from the fire extinguisher storage container 2, a fixing band 52 and a shoulder holder 53 as a holding member for the fire extinguisher storage container 2, and a radiation direction indicator 54. Is provided.
Thereby, the operability and safety of the fire extinguisher 1 can be further enhanced.

  As described above, the fire extinguishing agent storage container of the present invention has been described based on the embodiment, but the present invention is not limited to the configuration described in the above embodiment, and as a fire extinguishing agent, a typical nitrogen gas as an inert gas is used. In addition, other inert gases such as argon and other types of inert gas mixed with nitrogen gas, other than nitrogen gas, can be used, various inert gases can be used, fixed and semi-fixed fire extinguishers other than portable The configuration can be appropriately changed without departing from the gist of the invention, such as being applicable to a fire extinguisher storage container of a fire extinguishing equipment.

  The fire extinguisher storage container of the present invention is a portable type used for initial fire extinguishing by improving the operability and stability by using an inert gas as a fire extinguisher that does not limit the fire extinguishing agent or usage method due to the toxicity of the fire extinguisher to the human body. Since it is intended to provide a fire extinguisher storage container that is particularly preferably used for those of computers, communication equipment, data centers, electric equipment and the like, such as the use of initial fire extinguishing for equipment equipped with electrical and electronic equipment, including various It can be used for fixed or semi-fixed fire extinguishers and fire extinguishing equipment for initial extinguishing of equipment.

DESCRIPTION OF SYMBOLS 1 Fire extinguisher 2 Fire extinguisher storage container 3 Nozzle part 30 Nozzle main body 31 Metal porous member 32 Orifice plate 32a Orifice 4 Control tool 41 Container valve 42 Opening device 43 Regulator 43a Channel 43b Valve 43c Valve support 43d Channel Opening 43e Gas pressure chamber 43f Passage 43g Spring member 44 Safety device 51 Protector 52 Fixed band 53 Shoulder 54 Radiation direction indicator

Claims (4)

In a fire extinguishing agent storage container that stores a gas fire extinguishing agent that uses inert gas as a main component as a fire extinguishing agent, a regulator including a constant flow valve having a pressure reducing function is stored and installed in the fire extinguishing agent storage container. By providing a protector that protects the part exposed to the outside from the fire extinguishing agent storage container and a radiation direction indicator along the nozzle part, the fire extinguishing agent is made portable by a person so that it can be radiated toward the fire extinguishing target. extinguishing agent storage container characterized by comprising.   The fire extinguisher storage container according to claim 1, wherein the regulator is incorporated in a container valve and stored and installed in the fire extinguisher storage container.   The regulator comprising the constant flow valve having the pressure reducing function, by disposing the valve body movably in the flow path of the gas-based fire extinguishing agent, the valve body of the valve body support fixedly disposed on the container valve The fire extinguisher storage container according to claim 1, wherein the cross-sectional area of the flow path opening formed along the moving direction is changed.   The fire-extinguishing agent storage container according to claim 1, 2 or 3, wherein the regulator functions in conjunction with an opening device incorporated in the container valve.

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