JP2016209096A - Fire-extinguishing agent storage container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire-extinguishing agent storage container suitably used for a portable fire-extinguisher used for initial fire extinguishment which, as a fire-extinguishing agent, uses inert gas with no restrictions on a fire-extinguishing object or a method of use from the aspect of a toxic effect of the fire-extinguishing agent on a human body, and has improved operability and stability.SOLUTION: In a fire-extinguisher 1 configured to be carried by a person so that a fire-extinguishing agent can be radiated toward a fire-extinguishing object, a gas fire-extinguishing agent in which inert gas is used as a main component of a fire-extinguishing agent is stored in a fire-extinguishing agent storage container 2, and a regulator 43 having a pressure-reduction function is stored/installed in the fire-extinguishing agent storage container 2.SELECTED DRAWING: Figure 1

Description

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

  Conventionally, as portable fire extinguishers used for initial fire extinguishing, those using liquid fire extinguishers and powder fire extinguishers such as water fire extinguishers, foam fire extinguishers, and powder fire extinguishers are widely used.

  By the way, a fire extinguisher that uses liquid or powder as a fire extinguisher has a simple structure of components such as a nozzle and a fire extinguisher container, is easy to handle, and is easy to store. Widely used.

  However, when a fire extinguisher that uses liquid or powder as the above extinguishing agent is used to extinguish the fire, the liquid or powder extinguishing agent will scatter and pollute the surrounding environment. Therefore, it cannot be used for fire extinguishing targets that do not want to be polluted, especially for equipment with electrical and electronic equipment such as computers, communication equipment, data centers, electrical equipment, etc. Could not be used.

  For this reason, these fire extinguishing targets include gas systems such as carbon dioxide, halides, inert gases (nitrogen gas, inert gas such as argon, etc., these gases being used alone or mixed, 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 fire extinguishing equipment that uses a gas fire extinguisher is one that fills the entire facility space where electrical and electronic equipment is installed with the gas fire extinguisher and extinguishes the fire. When performed, the subsequent treatment requires labor and expense, and thus it was not necessarily suitable for use in initial fire extinguishing.
That is, for example, when a nitrogen gas fire extinguishing equipment that uses nitrogen gas as a gas fire extinguisher, which is a conventional fire extinguishing equipment, is installed in a compartment having a volume of 1000 m ³ , 26 fire extinguishing agent storage containers with a capacity of 83 L are required. When the system starts up, all extinguishant storage containers are discharged, and the fire extinguishing agent concentration (extinguishing concentration) necessary for extinguishing the entire compartment is a system that extinguishes the fire. However, even a very small fire that can be handled by the initial fire extinguishing system will release all extinguishing agent storage containers when the system is started up. However, it was not necessarily suitable for use.

On the other hand, there are portable fire extinguishers suitable for initial fire extinguishing using gas fire extinguishing agents, but those using carbon dioxide and halides as extinguishing agents exist. There was a problem that there were restrictions on the environment and restrictions on halon regulations.
In addition, a portable fire extinguisher using inert gas as a fire extinguisher, for example, in the case of typical nitrogen gas as inert gas, has a lower specific gravity than other gas fire extinguishing agents such as carbon dioxide, Because the necessary concentration of extinguishing agent is high, it is difficult not only to diffuse nitrogen gas toward the fire extinguishing target, but it is difficult for the nitrogen gas to concentrate on the fire extinguishing target. It was difficult to maintain the necessary extinguishing agent concentration because it was easily blown away by the flow of air flow, and if there was a fire type, it would be immediately reflammable and it was difficult to obtain a fire extinguishing effect, so it was not put into practical use.
In particular, when inert gas is used as a fire extinguisher, adjustment to have a decompression function in order to make the pressure (primary pressure) of nitrogen gas stored in the fire extinguisher storage container at a high pressure easy to use (secondary pressure) Since it is necessary to provide a fire extinguisher externally to the fire extinguisher storage container, there is a problem that this adjuster protrudes from the fire extinguisher and reduces the operability and stability of the fire extinguisher.

  In view of the problems related to the portable fire extinguisher used for the above-described conventional initial fire extinguishing, the present invention uses an inert gas as a fire extinguisher which has no restrictions on the fire extinguishing target and usage due to the toxicity of the fire extinguishing agent on the human body. It aims at providing the fire extinguisher storage container used especially suitably for the portable thing 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 extinguisher using an inert gas as a main component as a fire extinguisher. It is characterized by being stored and installed in the agent storage container.

  In this case, the adjuster can be installed in a container valve and stored in a fire extinguisher storage container.

  In addition, the regulator can function in conjunction with an opening device incorporated in the container valve.

  The fire extinguishing agent storage container may be configured to be portable by a person so that the fire extinguishing agent can be emitted toward the fire extinguishing target.

  According to the fire extinguisher storage container of the present invention, a gas fire extinguisher that uses inert gas as a main component as a fire extinguisher is stored in the fire extinguisher storage container, and a regulator having a decompression function is placed in the fire extinguisher storage container. The pressure of nitrogen gas stored in the extinguishing agent storage container at high pressure by installing the regulator in the container valve and storing it in the extinguishing agent storage container. Since the regulator for making the (primary pressure) easy to use (secondary pressure) is not exposed to the outside, there is no protrusion of the fire extinguisher, and the operability and safety can be improved. The position of the center of gravity becomes lower, and the stability when installed upright can be improved.

  In addition, by making the regulator function in conjunction with an opening device incorporated in the container valve, the mechanism and operation of the control instrument for controlling the release of the extinguishing agent including the regulator and the opening device are simplified. , Can increase the reliability.

  And this fire extinguisher storage container is suitably used as a portable fire extinguisher used for initial fire extinguishing by making the fire extinguisher portable so that the fire extinguisher can be emitted toward the fire extinguishing target. be able to.

It is explanatory drawing which shows one Example of the fire extinguisher to which the extinguishing agent storage container of this invention was applied. The nozzle part of the same fire extinguisher is shown, (a) is the external view seen from the opening part side, (b) The external view seen from the connection part side, (c) is XX sectional drawing of (b). It is a graph which shows the result of having measured the relationship between the distance from a nozzle at the time of using various nozzles, and oxygen concentration. 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 explanatory drawing which shows the modification of the fire extinguisher.

  Hereinafter, an embodiment of a fire extinguisher storage container of the present invention will be described based on the drawings.

1 to 4 show an embodiment of a fire extinguisher to which the fire extinguisher storage container of the present invention is applied.
This fire extinguisher 1 uses nitrogen gas typical as an inert gas as a fire extinguisher (here, as the fire extinguisher, an inert gas such as argon other than nitrogen gas or a plurality of types of inert gas containing nitrogen gas) Inert gas containing various types of inert gas can also be used.) The fire extinguishing agent storage container 2 connected to the nozzle portion 3 for radiating the extinguishing agent so that the extinguishing agent can be radiated toward the extinguishing target. It is configured to be portable by a person, and the nozzle portion 3 is configured such that the nitrogen gas is stored in the extinguishing agent storage container 2 and the metal porous member 31 is disposed at the outlet portion of the flow path of the nitrogen gas. Thus, the fire extinguishes by radiating nitrogen gas toward the fire extinguishing target.

In this case, the fire extinguishing agent storage container 2 and the nozzle portion 3 are connected to each other by a rigid joint via a container valve 41.
The fire extinguishing agent storage container 2 and the nozzle part 3 do not necessarily have to be connected by rigid joining. For example, the nozzle part 3 may be connected to the fire extinguishing agent storage container 2 through a flexible tube. it can.

  Here, the 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, the nozzle unit 3 for radiating the fire extinguishing agent is shown in FIG. The nozzle part 3 which makes it possible to go straight without spreading | extinguishing the extinguishing agent radiated | emitted toward the fire extinguishing object to show and to concentrate and radiate | extinguish an extinguishing agent at the extinguishing object is used.

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

The orifice plate 32 in which the plurality of orifices 32a are formed is detachably attached to the stepped portion 30a formed in the internal space of the nozzle body 30 through, for example, screws formed on the peripheral surfaces of the stepped portion 30a and the orifice plate 32. I try to set it up.
Thereby, the orifice plate 32 in which a plurality of types of orifices 32a are formed can be selected according to the use conditions.
It is also possible to omit the orifice plate 32 and directly form the same orifice in the nozzle body 30 (not shown).

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

  The metal porous member 31 can be constituted by a monolithic structure, or by a divided structure composed of an upstream member 31a and a downstream member 31b as shown in the present 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 a whole, and is changed in the direction in which gas flows, more specifically, in the direction in which gas flows. For example, in the present embodiment, it can be made of a material in which the hole diameter of the gap in the downstream member 31b is smaller than the hole diameter of the gap in the upstream member 31a.
Thus, by reducing the pore size of the voids of the material constituting the metal porous member 31 in the direction in which the gas flows, nitrogen gas is uniformly supplied from the entire end surface of the metal porous member 31 that is open to the atmosphere. Can radiate.

The metal porous member 31 has an end face on the opposite side of the metal porous member 31 that is open to the atmosphere, the nozzle body 30 (in this embodiment, an orifice) in both the integral structure and the divided structure. The end face of the metal porous member 31 that is open to the atmosphere is connected to the nozzle body 30 via a ring member 30b that abuts on the peripheral edge of the end face. It is intended to be supported.
In this case, the ring member 30b is detachably disposed on the nozzle body 30 via screws formed on the peripheral surfaces of the nozzle body 30 and the ring member 30b.
And the downstream member 31b which comprises the metal porous member 31 is formed larger diameter than the upstream member 31a, and the outer peripheral edge part of this downstream member 31b is used as the edge of the nozzle main body 30, and the edge of the ring member 30b. The metal porous member 31 (downstream member 31b) is secured to be sandwiched between the metal porous member 31 (downstream member 31b) so that it can have a large opening area (opening diameter) open to the atmosphere, and is directed to a fire extinguishing target. The range that can maintain the extinguishing agent concentration necessary for extinguishing the emitted nitrogen gas can be set large.
Here, the size of the opening area (opening diameter) opened to the atmosphere of the metal porous member 31 (downstream member 31b) determines a range in which the extinguishing agent concentration necessary 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.

  In this fire extinguisher 1, when extinguishing using a fire extinguisher, the extinguishing agent does not pollute the surrounding environment, and the extinguishing agent is not toxic to the human body. While enjoying the characteristics of inert gas (nitrogen gas), the fire extinguisher radiated toward the fire extinguishing object goes straight without diffusing, making it possible to concentrate the fire extinguishing agent on the fire extinguishing target and radiate it. By making it easy to maintain the 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 radial direction of the fire extinguishing agent (nitrogen gas) of the nozzle.
Here, the whole area nozzle is a nozzle in which one small hole that radiates a fire extinguishing agent (nitrogen gas) toward the fire extinguishing target is formed at the tip of the nozzle, and the local nozzle is a nozzle frequently used for carbon dioxide. In this nozzle, 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 apparent from FIG. 3, the nozzle of the present embodiment has a distance of 1 to 1.5 m (here, a metal porous member (downstream) It was confirmed that the extinguishing agent concentration (extinguishing concentration) necessary for extinguishing the nitrogen gas in (1) can be maintained by increasing the opening diameter D of the member).

By the way, the fire extinguisher 1 of a present Example WHEREIN: In the fire extinguishing equipment which uses the conventional inert gas as a fire extinguisher, the pressure (primary pressure) of the nitrogen gas stored by the high pressure in the fire extinguisher storage container 2 is a pressure (it is easy to use). In order to make the secondary pressure), the regulator 43 of the control device 4 for controlling the release of the extinguishing agent that is externally provided in the extinguishing agent storage container 2 is stored in the extinguishing agent storage container 2. To install.
Here, the regulator 43 has a secondary pressure in addition to a pressure reducing function for making the pressure (primary pressure) of nitrogen gas stored in the extinguishing agent storage container 2 at a high pressure easy to use (secondary pressure). It is preferable to have a pressure regulating function for keeping the pressure constant.

  As a result, since the adjuster 43 of the fire extinguisher 1 is not exposed to the outside, the protrusion of the fire extinguisher 1 is eliminated, and the operability and safety can be improved, and the position of the center of gravity of the fire extinguisher 1 is lowered and installed upright. Stability can be increased.

In this case, the adjuster 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 nitrogen gas stored in the extinguishing agent storage container 2 abnormally increases.

The opening device 42 incorporated in the container valve 41 includes a sealing plate 42b attached via a seal member 42c by a cap nut 42a screwed to the container valve 41, and an opening / closing valve 42d. The spring member 42e supported at the rear end by the nut 42a is urged in a direction to close the gas flow path following the front end opening 41a of the container valve 41.
And the pressure of the nitrogen gas stored in the fire extinguisher storage container 2 in the valve chamber 42f is applied to the open / close valve 42d on the back surface.
Thereby, when the fire extinguisher 1 is put in the storage state, the gas flow path following the tip 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, thereby causing the balance of the pressure of the nitrogen gas applied to the on-off valve 42d to be lost, and the spring member 42e. The on-off valve 42d moves against the urging force, the gas flow path following the tip 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 fixedly disposed on the container valve 41 by disposing the valve body 43b in the nitrogen gas flow path 43a. It consists of a constant flow valve adapted to change the cross-sectional area of the 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 decompression, which is depressurized by the change in the cross-sectional area of the flow path opening 43d, is obtained. (For this reason, the gas pressure chamber 43e formed in the valve body 43b and the nitrogen gas flow path 43a are communicated with each other through a passage 43f formed in the valve body 43b). 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 depressurization is applied, the force due to 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 body 43c is configured by balancing the force applied to the valve body 43b by the flow of nitrogen gas with the biasing force of the spring member 43g that biases the valve body 43b in a direction that balances this 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 composed of this constant flow valve, the valve body 43b disposed in the nitrogen gas flow path 43a is operated by the force applied to the valve body 43b by the flow of 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 body 43b is changed, and the flow rate of the nitrogen gas is kept substantially constant regardless of the pressure change of the nitrogen gas. Can do.
Thereby, it is hard to be influenced by the pressure change of nitrogen gas, and can be applied to a large flow rate.
The spring member 43g is used as an urging means for urging the valve body 43b in a direction that balances the force applied to the valve body 43b (a magnet can also be used as the urging means), whereby the overall structure is obtained. The controller 43 can be configured simply and can be stored and installed in the extinguishing agent storage container 2.
Furthermore, since this regulator 43 functions in conjunction with the opening device 42 incorporated in the container valve 41, the mechanism of the control instrument 4 that controls the release of the extinguishing agent including the regulator 43 and the opening device 41 and the operation thereof. Simplification and increased reliability can be achieved.

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
Filling nitrogen gas weight: about 4kg
Nitrogen gas filling pressure: about 30 MPa
Nitrogen gas emission duration: Approx. 15 seconds Distance to fire extinguisher: Within approx. 2 m Range that can maintain the extinguishing agent concentration necessary for extinguishing nitrogen gas: Open to the atmosphere of the metal porous member (downstream member) in the nozzle Several times the opening area to be opened (opening diameter D of the porous metal member (downstream member) of this embodiment: about 100 mm)
Metal porous member: Porous metal body composed of a three-dimensional network structure (“Celmet” (registered trademark) manufactured by Sumitomo Electric Industries, Ltd.)

In FIG. 5, the modification of the fire extinguisher which applied the fire extinguisher storage container of this invention is shown.
This fire extinguisher 1 is obtained by changing the opening device 42 incorporated in the container valve 41 in the fire extinguisher 1 of the third embodiment. The container valve 41 has a handle 42g and the handle 42g of the spring member 42e. An operating valve 42h that is operated against the urging force, an operating rod 42j provided integrally with the operating valve 42h, and an on-off valve 42d are provided. The on-off valve 42d is opened at the tip of the container valve 41 by a spring member 42e. The gas flow path following 41a is biased in the closing direction.
The operation rod 42j and the opening / closing valve 42d are formed with passages 42k and 42m so that the pressure on the side of the opening 41a of the container valve 41 is applied to the valve chamber 42f.
Thereby, when the fire extinguisher 1 is put in the storage state, the gas flow path following the tip 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, by operating the handle 42g, the open / close valve 42d is moved via the operation valve 42h and the operation rod 42j, thereby continuing to the tip opening 41a 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.

  In addition, the other structure and effect | action including the regulator 43 of this Example are the same as that of the fire extinguisher 1 of the said Example.

In FIG. 6, the modification of the fire extinguisher which applied the fire extinguisher storage container of this invention is shown.
The fire extinguisher 1 includes a protector 51 that protects a portion of the fire extinguisher 1 exposed to the outside from the fire extinguisher storage container 2, a fixing band 52 as a holding member, a shoulder member 53, and a radiation direction indicator 54. Is provided.
Thereby, the operativity and safety | security of the fire extinguisher 1 can be improved further.

  As mentioned above, although the fire extinguisher storage container of the present invention has been described based on the examples thereof, the present invention is not limited to the configurations described in the above examples, and as a fire extinguisher, nitrogen gas representative as an inert gas is used. In addition to inert gas such as argon other than nitrogen gas and multiple inert gases containing nitrogen gas, various inert gases can be used, fixed non-portable and semi-fixed fire extinguishers It can be applied to a fire extinguisher storage container of fire extinguishing equipment, and the configuration can be changed as appropriate without departing from the spirit of the invention.

  The fire extinguisher storage container of the present invention is a portable type used for initial fire extinguishing by using an inert gas as a fire extinguisher that has no restrictions on the fire extinguishing target and usage due to the toxicity of the fire extinguisher to the human body, and improving operability and stability. Since it provides fire extinguishing agent storage containers that are particularly suitable for use in various types of equipment, such as initial fire extinguishing for facilities equipped with electrical and electronic equipment such as computers, communication equipment, data centers, and electrical equipment. It can be used for fixed or semi-fixed fire extinguishers and fire extinguishing equipment for initial fire extinguishing on 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 instrument 41 Container valve 42 Opening device 43 Adjuster 43a Flow path 43b Valve body 43c Valve body support body 43d Flow path Opening 43e Gas pressure chamber 43f Passage 43g Spring member 44 Safety device 51 Protector 52 Fixing band 53 Shoulder hook 54 Radiation direction indicator

Claims (4)

  In a fire extinguisher storage container that stores a gas-based fire extinguisher containing inert gas as a main component as a fire extinguisher, a regulator having a decompression function is stored and installed in the fire extinguisher storage container Fire extinguisher storage container.   The fire extinguisher storage container according to claim 1, wherein the adjuster is installed in a fire extinguisher storage container by being incorporated in a container valve.   The fire extinguisher storage container according to claim 1 or 2, wherein the regulator functions in conjunction with an opening device incorporated in the container valve.   The fire-extinguishing agent storage container according to claim 1, 2 or 3, wherein the fire-extinguishing agent storage container is configured to be portable by a person so that the fire extinguishing agent can be emitted toward a fire extinguishing target.

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