JP2010221005A - Stored pressure type fire extinguisher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stored pressure type fire extinguisher equipped with a fire extinguishing agent storage vessel which is lightweight, hardly makes a gas permeate or has a high pressure storing property, and is made of a resin. <P>SOLUTION: A stored pressure type fire extinguisher 100 includes the fire extinguishing agent storage vessel 10. The vessel 10 is molded from the resin, and the inside of the fire extinguishing agent storage vessel 10 is pre-filled with a gas for discharging an extinguishing agent 60. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  TECHNICAL FIELD The present invention relates to a resin pressure-accumulating fire extinguisher that pre-fills a discharge gas for discharging a fire extinguisher into a fire extinguisher storage container that stores the fire extinguisher.

  Conventionally, a fire extinguisher storage container used for a fire extinguisher is manufactured from a metal such as iron, stainless steel, and aluminum. Among them, iron fire extinguishing agent storage containers are sturdy and not easily damaged, and the manufacturing cost is low. Therefore, iron is used for about 90% of fire extinguishers on the market.

  On the other hand, the example of the fire extinguisher provided with the resin-made fire extinguisher storage containers is disclosed. One document discloses a fire extinguisher in which the filling pressure is lowered as much as possible so as to maintain even the low pressure resistance which was a weak point of a resin fire extinguisher storage container (Patent Document) 1). Another document discloses a fire extinguisher using a thin polyethylene terephthalate (PET) waste product used for soft drinks or alcoholic beverages (Patent Document 2).

Japanese Utility Model Publication No. 56-160560 JP-A-9-313634

  As described above, iron extinguishing agent storage containers that are widely used in general are very heavy, causing problems of inconvenience to carry and poor operability, particularly for women, children, and elderly people.

  At first glance, the above-described technical problem for a metal typified by iron seems to be solved by adopting a resin-made fire extinguisher storage container. However, in reality, a fire extinguisher storage container that requires a service life of several years (for example, eight years) or more, such as a commonly used metal fire extinguisher, is light weight as a whole container. However, it is not easy to form the resin alone.

  In addition, compared to conventional metal fire extinguisher storage containers, resin-made ones are generally more permeable to gas, so a high-pressure gas must always be maintained for a long period of time. It is not easy to form a fire extinguisher storage container using a resin. Therefore, the pressure accumulation required for the extinguishing agent storage container of the pressure accumulating fire extinguisher is significantly higher than that required for the extinguishing agent storage container of the pressurizing fire extinguisher.

  The present invention greatly contributes to the realization of a fire extinguisher that is light in weight, has high pressure accumulation properties, and hardly permeates gas by eliminating the above-described problems of the prior art.

  The inventor has eagerly developed a resin fire extinguishing agent storage container that can replace an existing metal fire extinguisher from various viewpoints. As a result, the inventor succeeded in finding a configuration of a fire extinguisher storage container that can compensate for the weak points while taking advantage of the characteristics of the resin, and the present invention has been completed.

  One pressure-accumulation fire extinguisher of the present invention includes a fire extinguisher storage container formed of a resin, and the fire extinguisher storage container is prefilled with a gas of 0.98 MPa or less for discharging the fire extinguisher.

  According to this fire extinguisher, since it is a pressure-accumulation type fire extinguisher using a resin fire extinguisher storage container, it is much lighter than a fire extinguisher using a metal fire extinguisher storage container that has existed conventionally. Promoted. In addition, by realizing a lighter fire extinguisher, it becomes an extinguisher that is easy for everyone, regardless of age or gender, to provide a situation where fire extinguishing activities are easy to perform. Furthermore, by realizing a lighter fire extinguisher, it is possible to reduce the amount of carbon dioxide discharged from the transport vehicle during transport, which can greatly contribute to the maintenance and maintenance of the global environment. In addition, the extinguishing agent storage container is filled with a sufficient amount of gas for releasing the extinguishing agent and can hold the pressure.

In addition, another pressure-accumulation fire extinguisher of the present invention includes a fire extinguisher storage container that is molded with resin and is seamlessly formed except for the opening, and the above-described opening when the opening is closed. The gas permeation amount is 3.22 × 10 ⁻⁷ (Pa · m ³ · mm / cm ² · s · MPa) or less.

  According to this fire extinguisher, since it is a pressure-accumulation type fire extinguisher using a resin fire extinguisher storage container, it is much lighter than a fire extinguisher using a metal fire extinguisher storage container that has existed conventionally. Promoted. In addition, by realizing a lighter fire extinguisher, it becomes an extinguisher that is easy for everyone, regardless of age or gender, to provide a situation where fire extinguishing activities are easy to perform. Furthermore, by realizing a lighter fire extinguisher, it is possible to reduce the amount of carbon dioxide discharged from the transport vehicle during transport, which can greatly contribute to the maintenance and maintenance of the global environment. In addition, the extinguishing agent storage container is filled with a sufficient amount of gas for releasing the extinguishing agent and can hold the pressure.

  One fire extinguisher of the present invention achieves weight reduction and has high strength.

It is a whole external view which shows the fire extinguisher in one embodiment of this invention. It is a front view of the fire extinguisher storage container in one embodiment of the present invention. It is a front sectional view of a fire extinguisher storage container in one embodiment of the present invention. It is a schematic diagram which shows the test apparatus which measures the gas permeation amount of the fire extinguisher storage container in one embodiment of this invention.

  Embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this description, common parts are denoted by common reference symbols throughout the drawings unless otherwise specified. In the drawings, the elements of this embodiment are not necessarily shown to scale. Moreover, in order to make each drawing easy to see, some reference numerals may be omitted.

<First Embodiment>
FIG. 1 is an overall external view of a fire extinguisher 100 according to the present embodiment. FIG. 2 is a front view of the extinguishing agent storage container 10, and FIG. 3 is a front sectional view of the extinguishing agent storage container 10. In FIG. 2, for convenience, a broken line and a solid line are provided for explaining the part of the extinguishing agent storage container. 3, for the sake of convenience, an arrow for indicating the thickness of the extinguishing agent storage container 10 and a broken line for extending the cross-sectional shape of the mouth portion 91 are provided in order to display the thickness of the mouth portion 91. ing.

  As shown in FIG. 1, a fire extinguisher 100 according to the present embodiment is fitted with a fire extinguisher storage container 10 filled with a fire extinguisher 60 (for example, a powder fire extinguisher) and the bottom of the fire extinguisher storage container 10 to extinguish the fire. The support base 50 that supports the agent 60, the fire extinguisher hand lever 30 disposed above the extinguishing agent storage container 10, and the extinguishing agent 60 stored in the extinguishing agent storage container 10 are guided to the extinguisher hand lever 30. And a fire extinguisher hose 40 that is connected to the siphon pipe 70 so as to be circulated by operating the fire extinguisher hand lever 30.

  The fire extinguisher hand lever 30 includes a lid 31, a fixing lever 32, an activation lever 33, a raising / lowering rod 34, and a safety plug 35. In the present embodiment, when the safety stopper 35 is engaged with the raising and lowering bar 34, the activation lever 33 is fixed in a non-rotatable state with respect to the fixing lever 32. In addition, when the safety plug 35 is released from the engaged state with the raising / lowering rod 34, the activation lever 33 becomes rotatable with respect to the fixed lever 32.

  In addition, the fire extinguisher storage container 10 in the present embodiment includes a fire extinguisher storage portion 11 and a male screw portion 12 formed in an opening located at the upper portion of the fire extinguisher storage portion 11. The extinguishing agent storage container 10 and the fire extinguisher hand lever 30 are fixed by screwing the male screw portion 12 and the fire extinguisher hand lever 30 together. The fixing means between the extinguishing agent storage container 10 and the fire extinguisher hand lever 30 is not limited to screwing, and known joining means can be applied.

  Moreover, the fire extinguisher 100 of the present embodiment includes a fire extinguisher storage container 10 formed of polyethylene naphthalate (PEN) containing perinone red as a pigment. Specifically, the fire extinguisher storage container 10 of the present embodiment is formed of polyethylene naphthalate (PEN) mixed with a master batch (a mixture of pigment and PEN). In the present embodiment, the master batch is formed by mixing 1.3 parts of perinone-based red with respect to 100 parts of polyethylene naphthalate (PEN). Further, the above-mentioned master batch is mixed with polyethylene naphthalate (PEN) at a ratio of 5% to 30%. In addition, as shown in FIGS. 1 to 3, the fire extinguisher storage container 10 of the present embodiment is not formed with a seam like a metal fire extinguisher storage container except for the opening. For the comparative example, a fire extinguisher storage container in which the aforementioned master batch is not mixed at all is also produced.

Furthermore, the thickness (T ₁ ) of the mouth portion 91 of the extinguishing agent storage container 10 of the present embodiment is 2 mm or more and 5 mm or less, and the thickness (T ₂ ) of the shoulder portion 92 having a curved surface is 1.2 mm or more. It is 12 mm or less. Further, the thickness (T ₃ ) of the cylindrical body portion 93 is 1.2 mm or more and 1.7 mm or less, and the thickness (T ₄ ) of the bottom portion 94 having a curved surface is 1.2 mm or more and 12 mm or less. . Moreover, the total light transmittance of the fire extinguisher storage container 10 of this embodiment is about 50%.

  The total light transmittance of the fire extinguishing agent storage container 10 of the present embodiment is preferably 0% or more and 90% or less, and more preferably 5% or more and 75% or less. When the total light transmittance of the fire extinguishing agent storage container 10 of the present embodiment exceeds 75%, the extinguishant adhering to the wall surface of the fire extinguishing agent looks like dirt on the fire extinguisher, so that the fire extinguisher 100 is installed. This will damage the beauty of the surrounding area. On the other hand, when the total light transmittance is less than 5%, it becomes difficult to check the remaining amount of the extinguishing agent in an emergency, so that the practicality is inferior. Therefore, maintaining moderate transparency in the above-described range harmonizes practicality and aesthetic appearance. In addition, the total light transmittance of a more preferable extinguishing agent storage container is 20% or more and 70% or less. Within this range, it is possible to further harmonize with the surrounding aesthetics.

  Moreover, it is preferable that the thickness of the trunk | drum 93 of the fire extinguisher storage container 10 of this embodiment is 0.9 mm or more and 5 mm or less. This is because if the resin thickness is less than 0.9 mm, the strength required for a fire extinguishing agent storage container (for example, 2.6 MPa) may not be achieved, while if it is thicker than 5 mm, it is economical. This is because the possibility of achieving transparency that can visually recognize the fire extinguisher as the contents becomes difficult. According to the above viewpoint, the thickness of the trunk portion 93 is more preferably 0.9 mm or greater and 3 mm or less.

  Here, when the weight reduction of the fire extinguisher 100 of this embodiment was confirmed, compared with the conventional iron fire extinguisher storage container, the weight could be reduced to about 70% as a whole. By realizing the lightest weight as a fire extinguisher, it is possible to provide a situation in which any person regardless of age or gender becomes the most easy-to-use fire extinguisher and can be easily extinguished during a fire.

  Next, the manufacturing method of the fire extinguisher storage container 10 of this embodiment is demonstrated. The fire extinguishing agent storage container 10 made of polyethylene naphthalate (PEN) mixed with a master batch (a mixture of pigment and PEN) can be manufactured by a conventionally known resin molding method such as stretch blow molding or melt shaping. Of these, stretch blow molding is preferred in that, except for the opening, there is no seam, the molded state is good, and a container having an appropriate thickness can be obtained.

  In the present embodiment, first, polyethylene naphthalate (PEN) mixed with a master batch serving as a material for the fire extinguisher storage container 10 is melted, and the resin is injected or extruded into an injection mold. A 15 mm preform (hereinafter referred to as a preform) is formed. Next, after the product of the scalar quantity of the draw ratio in the circumferential direction of the trunk portion 93 and the scalar quantity of the draw ratio in the direction perpendicular to the circumferential direction exceeds 12 times, the fire extinguisher storage container The fire extinguishing agent storage container 10 is formed so that the thickness of the side surface of 10 is 0.9 mm or more and 5 mm or less.

  As described above, by molding the extinguishing agent storage container 10 by stretch blow, the strength or pressure resistance can be increased, and transparency expressed as transparent or translucent can be realized. Further, by making the extinguishing agent storage container made of transparent or translucent resin, it becomes possible to visually check the inside of the extinguishing agent storage container, which has been impossible with conventional metal extinguishing agent storage containers. That is, appropriate visual recognition of the fire extinguishing agent stored in the fire extinguishing agent storage container can be realized. As a result, general users or inspectors / managers can directly observe the remaining amount of fire extinguisher stored and the state of storage, so even general users are installed. It becomes possible to determine whether or not the fire extinguisher state of the fire extinguisher is normal.

  In addition, it is preferable that the total light transmittance of the preform of the fire extinguisher storage container 10 in the above-described embodiment is 5% or more and 75% or less. Moreover, it is preferable that the thickness of the preform of the fire extinguisher storage container 10 in the present embodiment is 4 mm or more and 30 mm or less.

  When the total light transmittance of the preform of the fire extinguisher storage container 10 of the present embodiment exceeds 75%, the extinguishing agent contained in the fire extinguisher storage container 10 after stretch blow is attached to the wall surface of the fire extinguisher. By appearing dirty, the beauty of the surroundings of the place where the fire extinguisher 100 is installed is impaired. On the other hand, when the total light transmittance of the preform is less than 5%, it becomes difficult to check the remaining amount of the extinguishing agent in the stretched blown extinguishing agent storage container 10 in an emergency, resulting in poor practicality. . Therefore, maintaining the transparency in the above-described range for the preform of the fire extinguisher storage container 10 also harmonizes the practicality of the fire extinguisher storage container 10 after stretch blow and the aesthetic appearance.

  Moreover, even if the above-mentioned preform is made too thick, there arises a problem that the transparency of the extinguishing agent storage container 10 after stretch blow deteriorates. In order to secure a sufficient pressure resistance of the final extinguishing agent storage container 10, it is particularly preferable that the thickness of the trunk portion 93 be 0.9 mm or more and 5 mm or less. Therefore, the thickness of the preform of the fire extinguisher storage container 10 in the present embodiment is preferably 4 mm or more and 30 mm or less. In addition, the product of the scalar amount of the stretching ratio in the circumferential direction of the body portion 93 and the scalar amount of the stretching ratio in the direction perpendicular to the circumferential direction is preferably 6 or more and 13.7 or less. More preferably, the above is used.

  Next, the inventors measured the gas barrier property of the fire extinguishing agent storage container 10 of the present embodiment.

Table 1 shows the measurement results of the gas barrier properties of the fire extinguisher storage container 10 in the fire extinguisher 100 manufactured in the present embodiment. The measurement of this embodiment was performed using the gas permeation amount measuring device 80 shown in FIG.
As shown in FIG. 4, a gas cylinder 82 for measurement gas is disposed in the upstream space 81 a of the measurement sample 84 (specifically, a test piece cut out from the extinguishing agent storage container 10), and is sent out from the gas cylinder 82. The pressure of the measuring gas is set to 0.3 MPa in the upstream space 81a. This pressure is measured by a compound meter 83. On the other hand, the downstream space 81b is sufficiently evacuated by the rotary pump 88 and the turbo molecular pump 87, and thus is in a high vacuum state. The measurement sample 84 is adjusted to 29 ° C. by the heater 85a connected to the heater adjuster 85b.

  By measuring the amount of the measurement gas that has permeated from the upstream space 81a to the downstream space 81b within a predetermined time using the configuration of the measurement device 80 described above, the amount of permeated gas is measured. Here, the measurement gas of this embodiment is helium gas (He). The amount of permeated gas is measured using a quadrupole gas analyzer 86a equipped with a recorder 86b. In addition, the gas measuring instrument in this analyzer is “Basic Process Gas Monitor Quule BGM-102R” manufactured by ULVAC (ULVAC, Inc.).

As shown in Table 1, when the mixing ratio of the master batch (a mixture of pigment (perinone red) and PEN) contained in the above-mentioned fire extinguisher storage container 10 formed of polyethylene naphthalate (PEN) is increased. Gas permeability decreased. That is, it was confirmed that the so-called gas barrier property is increased by increasing the content of the pigment contained in the fire extinguisher storage container 10. As a result, according to the fire extinguisher 100 of the present embodiment, by increasing the mixing ratio of the master batch based on the perinone red, the permeation amount of the measurement gas described above may not be completely zero, It was able to be reduced to 2.38 × 10 ⁻⁷ (Pa · m ³ · mm / cm ² · s · MPa). In addition, if a mixing rate is 30% or less, the visibility of the content (extinguishing agent) which is an advantage as resin can be maintained. Thus, the inclusion of a masterbatch (mixture of pigment (perinone red) and PEN) as a pigment in the resin fire extinguisher storage container 10 makes the content of the fire extinguisher appropriately visible. In addition to enhancing the aesthetics in a moist state, it can also contribute to the improvement of gas barrier properties, which is an important performance as a pressure accumulating fire extinguisher.

  As described above, by making the extinguishing agent storage container made of a resin having a high gas barrier property, it is possible to suppress the pressure drop in the extinguishing agent storage container while maintaining the characteristics of the resin described so far. As a result, the fire extinguisher including such a resin fire extinguisher storage container can be practically used as a pressure accumulation fire extinguisher.

In this embodiment, the measurement gas is helium gas (He), but the measurement gas is not limited to this. For example, nitrogen gas _{(N 2)} only, a nitrogen gas _{(N 2)} and helium gas (He) gas mixture of, or nitrogen gas and helium gas than other gases (e.g., neon (Ne) or argon (Ar) ) And a mixed gas.

<Second Embodiment>
The fire extinguisher 200 of this embodiment includes a fire extinguisher storage container 20. Here, the fire extinguisher storage container 20 is the same as that of the first embodiment except that the pigment contained in the fire extinguisher storage container 10 of the first embodiment is titanium oxide (TiO ₂ ) instead of perinone red. The same configuration as the fire extinguisher 100 is provided. Therefore, the description which overlaps with 1st Embodiment may be abbreviate | omitted.

In addition, the fire extinguisher 200 of this embodiment is equipped with the fire extinguisher storage container 20 formed of polyethylene naphthalate (PEN) containing titanium oxide (TiO ₂ ) as a pigment. Specifically, the fire extinguisher storage container 20 of the present embodiment is formed of polyethylene naphthalate (PEN) mixed with a master batch (a mixture of pigment and PEN). In this embodiment, the masterbatch is formed by mixing 0.13 part of titanium oxide (TiO ₂ ) with 100 parts of polyethylene naphthalate (PEN). Further, the above-mentioned master batch is mixed with polyethylene naphthalate (PEN) at a ratio of 5% to 30%. Further, as shown in FIGS. 1 to 3, the fire extinguisher storage container 20 of the present embodiment is not formed with a seam like a metal fire extinguisher storage container except for an opening. For the comparative example, a fire extinguisher storage container in which the aforementioned master batch is not mixed at all is also produced.

  Table 2 shows the measurement results of the gas barrier properties of the fire extinguisher storage container 20 in the fire extinguisher 200 manufactured in the present embodiment. Here, the measurement of the permeation amount is the same as the measurement method of the permeation amount of the measurement gas in the extinguishing agent storage container 10 described above.

As shown in Table 2, the mixing rate of the master batch (a mixture of pigment (titanium oxide) and PEN) contained in the fire extinguisher storage container 20 of the above-described embodiment formed of polyethylene naphthalate (PEN) is increased. And the gas permeation amount decreased. That is, it was confirmed that the so-called gas barrier property is increased by increasing the content of the pigment contained in the extinguishing agent storage container 20. As a result, according to the fire extinguisher 200 of this embodiment, the permeation amount of the measurement gas described above is not completely reduced to 0 by increasing the mixing ratio of the master batch based on titanium oxide. It was able to be reduced to 09 × 10 ⁻⁷ (Pa · m ³ · mm / cm ² · s · MPa). In addition, if a mixing rate is 30% or less, the visibility of the content (extinguishing agent) which is an advantage as resin can be maintained. Thus, the inclusion of a master batch (a mixture of pigment (titanium oxide) and PEN) as a pigment in the resin-made fire extinguisher storage container 20 allows the content of the fire extinguisher to be appropriately visible. In addition to enhancing the aesthetics, it can also contribute to the improvement of gas barrier properties, which is an important performance as an accumulator fire extinguisher.

  As described above, by making the extinguishing agent storage container made of a resin having a high gas barrier property, it is possible to suppress the pressure drop in the extinguishing agent storage container while maintaining the characteristics of the resin described so far. As a result, the fire extinguisher including such a resin fire extinguisher storage container can be practically used as a pressure accumulation fire extinguisher. However, from the viewpoint of enhancing gas barrier properties, it is preferable to use perinone red as a pigment rather than adopting titanium oxide as a pigment. On the other hand, when titanium oxide is used as a pigment, a white fire extinguisher storage container, which is rare as a fire extinguisher, is formed. From the viewpoint of attracting the attention of users or inspectors, titanium oxide is a pigment. It is also a preferable aspect to adopt as the above.

<Other embodiments>
The kind of fire extinguisher with which the fire extinguisher storage container of the fire extinguisher of each of the above embodiments is filled is not particularly limited. Any known extinguishing agent can be employed as long as it does not affect the resin constituting the extinguishing agent container. For example, it can be used as a powder fire extinguisher. Moreover, what was proposed conventionally can be employ | adopted suitably about the filling method of a fire extinguisher, and the material, shape, etc. of components, such as a hose and a nozzle.

  Moreover, the resin which comprises a fire extinguisher storage container can mix | blend well-known additives, such as a light stabilizer, a ultraviolet absorber, and anti-aging agent suitably, in order to prevent discoloration and to improve a weather resistance. As described above, modifications that exist within the scope of the present invention including other combinations of the embodiments are also included in the scope of the claims.

  The pressure-accumulation fire extinguisher of the present invention is extremely useful in the fire extinguisher industry because a resin fire extinguisher storage container having high pressure accumulation and high gas barrier properties is employed.

DESCRIPTION OF SYMBOLS 10,20 Fire extinguisher storage container 11 Fire extinguisher storage part 12 Male screw part 30 Fire extinguisher hand lever 31 Cover body 32 Fixing lever 33 Starting lever 34 Falling hook 35 Safety stopper 40 Fire extinguisher hose 50 Support stand 60 Fire extinguisher 70 Siphon tube 80 Measuring Device 81a Upstream Space 81b Downstream Space 82 Gas Cylinder 83 Coupled Meter 84 Measurement Sample 85a Heater 85b Heater Adjuster 86a Quadrupole Gas Analyzer 86b Recorder 87 Turbo Molecular Pump 88 Rotary Pump 91 Portion 92 Shoulder 93 Body 94 Bottom 100,200 Fire extinguisher

Claims (4)

Equipped with a fire extinguisher storage container,
The pressure-extinguishing fire extinguisher, wherein the fire extinguisher storage container is molded of a resin, and the fire extinguisher storage container is prefilled with a gas of 0.98 MPa or less for releasing the fire extinguishing agent. The extinguishing agent storage container is seamlessly formed except for the opening, and the gas permeation amount when the opening is closed is 3.22 × 10 ⁻⁷ Pa · m ³ · mm / cm ² · The pressure-accumulation fire extinguisher according to claim 1, which is equal to or less than s · MPa. The pressure-accumulation fire extinguisher according to claim 1 or 2, wherein the resin is transparent or translucent. The pressure-accumulation fire extinguisher according to any one of claims 1 to 3, wherein the gas is nitrogen or a gas containing nitrogen.

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