JP5486998B2 - Accumulated fire extinguisher - Google Patents

Description

  The present invention relates to a pressure-accumulating fire extinguisher equipped with a resin fire extinguisher storage container.

  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). The applicant of the present application also discloses an initial fire extinguisher equipped with a resin fire extinguisher storage container (Patent Document 3). However, individual technical problems, particularly mass production of a resin fire extinguisher storage container. Specific proposals for improving the technology have not yet been disclosed.

Japanese Utility Model Publication No. 56-160560 JP-A-9-313634 International Publication No. 2008/133176 Pamphlet

  As mentioned above, fire extinguishers with iron extinguishant storage containers, which are widely used, are very heavy, especially for women, children, and elderly people. It was generated.

  At first glance, the above-mentioned technical problem for the metal represented by iron seems to be solved by adopting a plastic 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.

  By the way, the fire extinguisher includes a pressurizing fire extinguisher and a pressure accumulating fire extinguisher. When using a pressurized fire extinguisher, sudden pressurization occurs in the fire extinguisher storage container during use, and the reaction to the rapid pressurization causes inconvenience in handling especially for women, children, and the elderly. . On the other hand, in the pressure-accumulation fire extinguisher, a certain pressure (for example, about 1 MPa) is held in advance in the fire extinguisher storage container. Accordingly, sudden pressurization can be avoided even during use, so there is almost no reaction and the inconvenience as described above does not occur.

  However, as described above, the pressure-accumulating fire extinguisher cannot exert its original function unless the gas for releasing the fire extinguishing agent is kept at a high pressure for a long period of time. Therefore, securing the sealing property at the opening of the extinguishing agent storage container and the connection part with other parts is particularly important from the viewpoint of the reliability and safety of the product. Therefore, even when a conventional metal fire extinguisher storage container is employed, a manufacturing process with higher accuracy has been demanded. This can be said to be one of the main reasons that each fire extinguisher manufacturer has mainly produced a pressurized fire extinguisher so far, at least in Japan.

  The above-described technical problem becomes more apparent by adopting a resin-made fire extinguishing agent storage container. Specifically, apart from the problem of airtightness between components in metal fire extinguishers, the resin itself has gas permeability, so once the high-pressure gas is sealed in the container Even so, there arises a problem that the gas gradually passes through the resin container and leaks to the outside as time elapses. As a result, the original function as a pressure accumulating fire extinguisher is lost. Therefore, in particular, adopting a resin fire extinguisher storage container as a pressure-accumulating fire extinguisher has more technical problems than a pressure fire extinguisher.

  As a result, when manufacturing a pressure-accumulating fire extinguisher equipped with a resin fire extinguisher storage device, it is necessary to always consider two aspects of gas leakage. One is a mode of gas leakage that passes through the resin itself, which is a mode peculiar to an accumulator fire extinguisher made of resin. In order to distinguish this gas leak mode from another gas leak mode, it is referred to as “resin pass leak” or simply “pass leak”. The other is an aspect of gas leakage due to insufficient sealing between the components of the accumulator. In order to distinguish from the former gas leakage, this gas leakage mode is called “inter-component leakage”. Therefore, how to manufacture a pressure-accumulating fire extinguisher equipped with a resin fire extinguisher storage container after distinguishing two different gas leak modes, especially when considering mass productivity It becomes important to.

  The present invention solves the above-mentioned technical problem by realizing a pressure-accumulating fire extinguisher that can hold a gas for discharging a fire extinguisher for a long period of time even if it has a resin fire extinguisher storage container. It contributes greatly.

  The inventors of the present application determined that it is important to realize a pressure-accumulating fire extinguisher equipped with a resin-made fire extinguishing agent storage container from the viewpoint of the operability and safety of the fire extinguisher, and eagerly toward its development Study was carried out. As described above, in the case of a pressure-accumulating fire extinguisher equipped with a resin fire extinguisher storage container, there are two different modes of gas leakage. Therefore, the inventors of the present application carefully investigated and analyzed the two gas leakage modes from a plurality of angles. As a result, in the “resin passage leak” mode, it is found that a specific gas is involved, but it is extremely difficult to eliminate the specific gas in the production of an accumulator. I found out. Therefore, as a result of further studies by the inventors on the above-mentioned two incompatible technical problems, the gas for releasing the fire extinguisher for a long period of time (for example, up to the service life) is high without impairing the properties of the resin. A new technique has been found to realize holding with pressure. The present invention was created based on such a viewpoint.

  One pressure-accumulation fire extinguisher of the present invention includes a fire extinguisher storage container that is molded seamlessly using resin and has an opening. In addition, one pressure-accumulation fire extinguisher of the present invention is selected from the group consisting of argon gas and nitrogen gas by containing the fire extinguisher in the aforementioned fire extinguisher storage container and closing the aforementioned opening. And at least one light element gas selected from the group consisting of helium gas and hydrogen gas. Furthermore, in one pressure-accumulation fire extinguisher of the present invention, when the light element gas is not present, the pressure in the extinguishing agent storage container of the inert gas is 0.7 MPa or more and 0.97 MPa or less, The ratio of the number of moles of light element gas to the total number of moles of the number of moles of the inert gas and the number of moles of the light element gas is less than 10%.

  According to one pressure-accumulation fire extinguisher of the present invention, since the fire extinguisher storage container is a pressure-accumulation fire extinguisher that is molded using a resin, it is markedly different from a fire extinguisher equipped with a metal fire extinguisher storage container. In addition to being lightweight, it has the advantage of less reaction during use than a pressurized fire extinguisher. Therefore, this pressure-accumulating fire extinguisher becomes a safe and easy-to-use fire extinguisher regardless of age and sex, and can provide a situation where fire extinguishing activities are easy to perform. In addition, according to this accumulator-type fire extinguisher, since the composition ratio is specified in consideration of the permeability of the inert gas and the light element gas to the resin at room temperature, Even if the light element gas mentioned above causes “resin passage leakage” due to aging, it is possible to maintain a sufficient function as an accumulator fire extinguisher, particularly at room temperature (for example, about 20 ° C.). Furthermore, not only the inert gas that is difficult to cause “resin passage leakage” but also the light element gas described above is introduced in an appropriate range. Can be detected. Therefore, one pressure-accumulation fire extinguisher of the present invention can be provided with a highly reliable and safe resin fire extinguisher storage container that can withstand mass production.

  By the way, in the present application, the “lifetime” is an arbitrary period during which the accumulator-type fire extinguisher can maintain its original function without having to refill the inert gas after the accumulator-type fire extinguisher is manufactured. Say. The lifetime of a typical fire extinguisher is 8 years.

  One pressure-accumulation fire extinguisher of the present invention is not only provided with a resin-made fire extinguisher storage container that is superior in operability and safety compared to existing metal pressure-accumulation fire extinguishers, but also in the fire extinguisher storage container. A high gas pressure can be maintained for a long time.

It is a whole external view which shows the fire extinguisher in the 1st Embodiment of this invention. It is a front view of the fire-extinguishing agent storage container in the 1st Embodiment of this invention. It is front sectional drawing of the fire extinguisher storage container in the 1st Embodiment of this invention. It is a schematic diagram which shows the measuring apparatus of the gas permeation | transmission amount of the fire extinguisher storage container in the 1st Embodiment of this invention. It is data which shows an example of the gas permeation | transmission amount of the fire extinguisher storage container in the 1st Embodiment of this invention. It is data which shows an example of the gas permeation | transmission amount of the fire extinguisher storage container in the 1st Embodiment of this invention. It is data which shows an example of the gas permeation | transmission amount of the fire extinguisher storage container in the 1st Embodiment of this invention. It is a schematic diagram which shows the apparatus which measures the gas leakage amount of the pressure | storage type fire extinguisher in the 1st 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, elements of the present embodiment are not necessarily described with each other kept to scale. Furthermore, in order to make each drawing easy to see, some reference numerals are omitted.

<First Embodiment>
FIG. 1 is an overall external view of a pressure accumulation fire extinguisher 100 according to the present embodiment. The pressure-accumulation fire extinguisher 100 according to the present embodiment is fitted into the fire extinguisher storage container 10 containing a fire extinguisher 60 (for example, a powder fire extinguisher or a neutral reinforcing liquid) 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.

  The fire extinguisher storage container 10 of this embodiment is formed of polyethylene naphthalate (PEN). As shown in FIGS. 1 to 3, the fire extinguisher storage container 10 of the present embodiment includes an opening 12, but has no seam as in a metal fire extinguisher storage container.

  FIG. 2 is a front view of the fire extinguishing agent storage container 10. In FIG. 2, for convenience, a broken line and a solid line are provided for explaining the site of the extinguishing agent storage container. 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 top 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.

FIG. 3 is a front sectional view of the fire extinguishing agent storage container 10. In FIG. 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 to display the thickness of the mouth portion 91. ing. 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 8 mm or less, and the thickness (T ₂ ) of the shoulder portion 92 having a curved surface is 1.2 mm or more and 12 mm or less. It is. Further, the thickness (T ₃ ) of the cylindrical body portion 93 is 1.2 mm or more and 1.9 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, 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 thickness of the resin is less than 0.9 mm, the strength required for a fire extinguishing agent storage container (eg, 2.4 MPa) may not be achieved, while if it is thicker than 5 mm, it is economical. This is because the possibility of achieving the advantage of the resin-based fire extinguisher storage container that can visually recognize the fire extinguisher as the contents increases. According to the above viewpoint, the thickness of the body portion 93 is more preferably 0.9 mm or more and 3 mm, and further preferably 1 mm or more and 3 mm or less.

  Here, when the weight reduction of the pressure-accumulation fire extinguisher 100 of this embodiment was confirmed, compared with the fire extinguisher provided with the conventional iron fire extinguisher storage container, the weight was able to 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 pressure accumulation type fire extinguisher 100 of this embodiment is demonstrated. First, the fire extinguisher storage container 10 can be manufactured by a conventionally known resin molding method such as stretch blow molding, melt shaping, etc., among these, there is no seam, and the molding state is good except for the opening, In addition, stretch blow molding is preferable in that a container having an appropriate thickness can be obtained.

Thereafter, the extinguishant storage container 10 is closed by screwing the lid 31 that is a part of the fire extinguisher hand lever 30 and the male screw portion 12 of the extinguishant storage container 10. After the closing, the valve rod included in the lid 31 is temporarily opened to allow nitrogen (N ₂ ) gas and helium (He) to connect the connection portion for the hose 40 in the fire extinguisher hand lever 30. It was enclosed in the fire extinguisher storage container 10.

  Here, in the manufacture of the pressure-accumulation fire extinguisher 100, each part is made after the above-mentioned gas is sealed in the fire extinguisher storage container 10 in order to determine whether or not each part is properly assembled. It is required to check the leakage of the sealed gas from the contact portion (leakage between parts). On the other hand, since the fire extinguishing storage container 10 of the present embodiment is made of resin, not only the contact portion of each component but also the fire extinguishing storage container 10 itself that need not be considered when a metal fire extinguishing agent storage container is employed. Gas leakage (passage leakage) was also considered as a new problem. That is, the inventors have no joints in the resin fire extinguisher storage container 10 of the present embodiment, so that there is no leakage between parts of the container itself, but the reliability is not considered without considering the aforementioned “passage leakage”. It was found that it is extremely difficult to obtain a high pressure accumulator.

  Therefore, in this embodiment, in order to distinguish the above-mentioned “passage leakage” from “component leakage”, prior to the manufacture of the accumulator-type fire extinguisher 100, apart from the measurement of the gas leak amount of the accumulator-type fire extinguisher 100, The gas barrier property of the fire extinguisher storage container 10 was also measured.

  FIG. 4 is a configuration diagram of a gas permeation measuring device 80 for measuring gas barrier properties. 5A to 5C are data measured using the gas permeation amount measuring device 80, respectively. FIG. 6 is a schematic diagram showing a gas leak amount measuring apparatus 190 of the accumulator fire extinguisher 100. In the present embodiment, as a step of the manufacturing process of the accumulator-type fire extinguisher 100, the leakage amount of the enclosed gas is measured.

  First, the gas transmission amount measuring device 80 will be described. As shown in FIG. 4, a gas cylinder 82 for measurement gas is arranged 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 measured 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 40 ° C. by the heater 85a connected to the heater adjuster 85b. In general, since the temperature of the place where the accumulator is installed is -30 ° C to 40 ° C, measuring the gas barrier property under the highest temperature condition in the range is the most severe. It is meaningful because it is measured under conditions.

Meanwhile, hydrogen (H ₂ ) and helium (He) gas, which are light element gases that are relatively easy to detect, enable rapid gas leakage and measurement of the amount thereof. Therefore, in order to confirm the proper sealing of the gas into the extinguishing agent storage container 10, in other words, to confirm the pressure accumulation property, at least an amount of gas that can be detected by the gas leak amount measuring device 190 described in detail later is used. It is necessary to enclose the light element gas in the extinguishing agent storage container 10.

  As a result, a situation arises in which a light element gas such as helium (He) gas, which is originally undesirable for the resin-made fire extinguisher storage container 10, must be sealed in order to check the leak. Therefore, from the viewpoint of ensuring stable pressure accumulation for 8 years from the manufacture, which is required particularly in Japan, the inventors have determined the types, ratios, and pressures of the gas sealed in the extinguishing agent storage container 10 as follows. It was determined as follows.

In the present embodiment, a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas is enclosed in the fire extinguisher storage container 10. Here, the value obtained by subtracting the volume of the extinguishing agent 60 from the volume of the extinguishing agent storage container 10 (hereinafter referred to as “air space 1”) is that the extinguishing agent is a powder extinguishing agent (for example, primary ammonium phosphate as a main component). In the case of a fire extinguishing agent, it is 2033 cm ³ , and in the case where the fire extinguishing agent is a neutral reinforcing liquid (for example, a neutral reinforcing liquid mainly composed of potassium salt or ammonium salt), it is 1140 cm ³ . The ratio of the number of moles of helium (He) gas to the total number of moles of the number of moles of nitrogen (N ₂ ) gas as the inert gas and the number of moles of helium (He) gas as the light element gas is 1% or more and less than 10%. Here, the ratio is set to 1% or more in the leak measurement system 100 as a ratio of the signal (S) to the noise (N) level affected by the increase in “passing leakage” over time is 1.5 or more. To get. In addition, the noise is the sum of the value present as so-called background and the value due to “passage leakage” that can change over time in this measurement. The threshold value is an upper limit value of the amount of gas leakage that is acceptable as a non-defective product for the accumulated pressure fire extinguisher to be manufactured, and means the above-described signal (S). Specifically, this threshold value is calculated from the following equation.

That is, the threshold value in the present embodiment is obtained by subtracting 0.7 MPa from the pressure in the extinguishing agent storage container 10 of nitrogen (N ₂ ) gas that is an inert gas when helium (He) gas that is a light element gas is not present. The value obtained by multiplying the calculated value by the ratio of the number of moles of light element gas to the number of moles of all gases is divided by the number of seconds corresponding to the service life.

  Moreover, the above-mentioned ratio was set to less than 10%. If the pressure-accumulating fire extinguisher equipped with the fire extinguisher storage container 10 of the present embodiment is installed at room temperature (for example, 20 ° C.), from the sealing step This is to make it possible to maintain the pressure in the extinguishing agent storage container 10 at a predetermined pressure (for example, 0.7 MPa) or more for 8 years. As a result, for example, an additional gas sealing operation for maintaining the pressure accumulation property at the time of checking the pressure accumulation type fire extinguisher becomes unnecessary.

In addition, the specific threshold value in the measurement of the gas leakage amount of the present embodiment was set as follows.
(1) When the fire extinguisher was a powder fire extinguisher, the threshold was set to 6.14 × 10 ⁻⁸ Pa · m ³ / s.
(2) When the fire extinguishing agent was a neutral strengthening liquid, the threshold value was set to 3.55 × 10 ⁻⁸ Pa · m ³ / s.

Based on the above, by using the configuration of the gas permeation measuring device 80, measuring the amount of the measurement gas permeated from the upstream space 81a to the downstream space 81b within a predetermined time, the amount of gas to be permeated can be determined. Measured. Here, the gas for measurement by the gas permeation measuring device 80 was a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas. The mixed gas is accommodated in the gas cylinder 82 described above. More specifically, in this mixed gas, the ratio of the number of moles of helium (He) gas to the total number of moles of the total number of moles of nitrogen (N ₂ ) gas and the number of moles of helium (He) gas is 10 % Was set. This numerical value was set as a value exceeding the severest conditions in the leak measurement in the range of the mixing ratio of the helium (He) gas. Further, as shown in FIG. 4, the amount of gas that permeated was measured using a quadrupole gas analyzer 86a equipped with a recorder 86b. In addition, the gas measuring device in this analyzer is "Basic Process Gas Monitor Qule BGM-102R" manufactured by ULVAC (ULVAC, Inc.).

  Here, in this embodiment, the accumulator fire extinguisher 100 includes a fire extinguisher storage container 10 formed of polyethylene naphthalate (PEN) containing perinone-based red as a pigment. Specifically, the fire extinguisher storage container 10 of the present embodiment was formed of polyethylene naphthalate (PEN) mixed with a master batch (a mixture of pigment and PEN). In the present embodiment, the master batch was formed by mixing 1.3 parts of perinone-based red with respect to 100 parts of polyethylene naphthalate (PEN). Moreover, the above-mentioned masterbatch was mixed in the ratio of 10% with respect to the polyethylene naphthalate (PEN). As a comparative example, a fire extinguisher storage container in which the aforementioned master batch was not mixed at all was also prepared. FIG. 5A is a measurement result of the gas barrier property of the extinguishing agent storage container 10 in the accumulator fire extinguisher 100 manufactured in the present embodiment.

Further, as a modification of the present embodiment, the fire extinguisher storage container 10 has the same configuration as the pressure-accumulation fire extinguisher 100 except that the pigment contained in the fire extinguisher storage container 10 is titanium oxide (TiO ₂ ) instead of perinone red. The gas barrier property was also measured for the accumulator fire extinguisher 150. In addition, the pressure accumulation type fire extinguisher 150 of this embodiment is provided 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). Moreover, the above-mentioned master batch is mixed with polyethylene naphthalate (PEN) at a ratio of 10%.

  FIG. 5B is a measurement result of the gas barrier property of the extinguishing agent storage container 20 in the pressure-accumulating fire extinguisher 150 manufactured in the modification of the present embodiment.

As shown in FIGS. 5A and 5B, by using a fire extinguisher storage container 10 formed of polyethylene naphthalate (PEN) containing a pigment, 5.0 × 10 ⁻⁹ Pa · at least for 1200 seconds from the start of measurement. It was confirmed that the light element gas passes only in an amount less than m ³ / s.

Furthermore, the gas barrier property of the fire extinguisher storage container using a resin in which each of the master batches described above was not mixed at all, that is, containing no pigment, was also measured using the gas permeation measuring device 80. FIG. 5C shows the result. As shown in FIG. 5C, even when a fire extinguisher storage container that does not contain any pigment is used, the gas enclosed in the fire extinguisher storage container is 2.5 × 10 ⁻⁹ for at least 600 seconds. It was confirmed that the light element gas passes only in an amount less than Pa · m ³ / s.

Further, as a result of the inventors further investigating the gas barrier property, when the measuring gas is only helium (He) gas in the gas permeation measuring device 80, the fire extinguisher storage container does not contain a pigment. Even so, the amount of helium (He) gas permeating through these containers is 3.7 × 10 ⁻⁷ (Pa · m ³ · mm) / (cm ² · s · MPa in a saturated state at 40 ° C. ) Was found to be: (where “s” in the unit is seconds). Therefore, when the measurement gas is a mixed gas of 10% (molar ratio) of helium (He) gas and 90% (molar ratio) of nitrogen (N ₂ ) gas which is an inert gas, the permeation amount However, it was found to be 3.7 × 10 ⁻⁸ (Pa · m ³ · mm) / (cm ² · s · MPa) or less. In addition, when the extinguishing agent storage containers 10 and 20 containing the pigment are used, the permeation amount is 3.2 × 10 ⁻⁷ (Pa · m ³ · mm) / (cm ² · s · MPa) or less. I understood that. Therefore, when the measurement gas is a mixed gas of 10% (molar ratio) of helium (He) gas and 90% (molar ratio) of nitrogen (N ₂ ) gas which is an inert gas, the permeation amount However, it was found to be 3.2 × 10 ⁻⁸ (Pa · m ³ · mm) / (cm ² · s · MPa) or less. Therefore, it can be seen that containers having high gas barrier properties such as these are suitable examples for exhibiting the function as an accumulator fire extinguisher.

  In addition, as a result of further detailed analysis of the above-described two gas leakage modes, gas leakage due to “passage leakage” among the gases enclosed in the extinguishing agent storage containers 10 and 20 is substantially light element. It has been found that there is no problem even if it is considered to be caused only by the helium (He) gas that is a gas.

Based on the results of the above investigations and their analysis, and the fact that the time required for the gas filling process into the extinguishing agent storage containers 10 and 20 is 20 seconds at the longest, the following knowledge was obtained.
(1) After the fire extinguisher storage containers 10 and 20 are closed by the lid 31 and then the gas is sealed, the “passage of the gas sealed in the fire extinguisher storage containers 10 and 20” is continued for at least 10 minutes (600 seconds). Even if the “leakage” does not occur or does not occur, there is no problem even if it is considered that it does not affect the measurement of “leakage between parts”. In other words, since at least 10 minutes (600 seconds) after the gas is sealed, it is possible to secure a situation where the threshold is 1.5 times or more than the noise (N) described above. This is advantageous in terms of mass productivity.
(2) Helium (He) gas which is a light element exceeding the above-mentioned threshold is detected at least 10 minutes (600 seconds) after the extinguishing agent storage containers 10 and 20 are closed by the lid 31 and the gas is sealed after that. If it has been done, it can be identified as “leakage between components”.
Therefore, the inventors have stored a fire extinguisher as a step in the production process of the pressure-accumulating fire extinguisher 100 in order to accurately detect the problem of “inter-component leakage” which is the biggest obstacle to maintaining the pressure-accumulating performance. The amount of gas leakage (leakage between components) was measured within 10 minutes (600 seconds) after the containers 10 and 20 and the fire extinguisher hand lever 30 were screwed together and the gas was sealed.

  Below, the measuring method using the measuring device 190 of the gas leak amount shown in FIG. 6 is demonstrated. In the present embodiment, the amount of leakage of the enclosed gas was measured as one step of the manufacturing process of the accumulator-type fire extinguisher 100.

  As shown in FIG. 6, first, the extinguishing agent storage containers 10, 20 are closed by the lid 31, and then the intermediate product 110 of the pressure-accumulating fire extinguisher in which the gas is sealed is stored in the chamber 192. After the gas in the chamber 192 is sufficiently exhausted by the exhaust pump 194, measurement is started by the measurement unit 196. Note that a known measuring instrument (manufactured by Yamaha Finetech Co., Ltd., model YLD-200A) was used for the measuring unit 196 of the present embodiment. In order to simplify the drawing, the pump for exhausting the measurement unit 196 is not shown. By the way, in this embodiment, when measuring the gas leak amount of the pressure accumulator-type fire extinguisher 100, the safety stopper 35 and the fire extinguishing agent hose 40 are not attached to the intermediate product 110 of the pressure accumulator-type fire extinguisher. As described above, since it is required to measure gas leakage within a predetermined time (for example, within 10 minutes) in order to accurately detect leakage between components in the manufacturing process, the mounting time of components unnecessary for this measurement is required. Is omitted.

  As described above, in particular, in the measurement of gas leakage as part of a method of manufacturing a pressure accumulator fire extinguisher with a view to mass production, the amount of gas leakage of accumulator fire extinguishers manufactured one after another is extremely rapid. To be measured. Therefore, in order to satisfy such requirements, it is preferable to measure the amount of gas leakage with a light element gas typified by the aforementioned helium (He) gas, which is relatively easy to detect.

  Inventors considered the environment (especially temperature change) where the accumulator-type fire extinguisher 100 is installed in addition to the above viewpoint. As a result, the inventors, in particular, required in Japan, in order to ensure stable pressure accumulation for 8 years from production, the types of gas enclosed in the extinguishing agent storage containers 10, 20, the ratio thereof, and the The pressure was determined as follows.

In the present embodiment, as described above, a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas is enclosed in the extinguishing agent storage containers 10 and 20. Here, the ratio of the number of moles of helium (He) gas to the total number of moles of the number of moles of nitrogen (N ₂ ) gas as the inert gas and the number of moles of helium (He) gas as the light element gas is 7%. In addition, when the helium (He) gas is not present, the pressure inside the fire extinguishing agent storage container 10 or 20 containing only nitrogen (N ₂ ) gas is sealed so as to be about 0.88 MPa at 20 ° C.

In addition, gas is enclosed so that the pressure in the extinguishing agent storage container 10, 20 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 0.7 MPa or more and 0.91 MPa or less at 20 ° C. It is preferable that helium (He) gas can maintain sufficient pressure accumulation even if “passage leakage” occurs over time.

As described above, in the present embodiment, since the helium (He) gas and the nitrogen (N ₂ ) gas are sealed at a specific ratio and a specific pressure range, the pressure-accumulating fire extinguisher 100 is at room temperature (for example, 20 ° C.). In the place installed in, the pressure accumulation property can be stably maintained for a long period (in this embodiment, 8 years). That is, the pressure-accumulation fire extinguisher 100 of this embodiment can maintain the pressure in the extinguishing agent storage containers 10 and 20 at 0.7 MPa or more for 8 years. As a result, for example, an additional gas sealing operation for maintaining the pressure accumulation property becomes unnecessary.

  Furthermore, according to the pressure-accumulation fire extinguisher 100 of this embodiment, since helium (He) gas is enclosed in an appropriate range, leakage between components in the manufacturing process can be detected with high accuracy. Therefore, even if it has a resin-made fire extinguisher storage container, the pressure-accumulation fire extinguisher 100 with high reliability and mass productivity can be obtained.

  In addition, it is more preferable that the ratio of the number of moles of light element gas to the number of moles of all gases is set to 8% or less from the viewpoint of ensuring long-term pressure accumulation and reducing the cost of the enclosed gas. It is one mode. Moreover, in this embodiment, when measuring using the gas leak amount measuring device 190, the S / N ratio is set to 1.5, but the S / N ratio is not limited to this value. For example, setting the S / N ratio to 3 or 4 or more is another aspect that can be adopted. In particular, in order to increase mass productivity or reliability, setting the S / N ratio to 4 or more is a preferable aspect.

  By the way, in the above-mentioned first embodiment and its modification, the content that is an advantage as a resin if the mixing ratio of the masterbatch is 10% or less in any of perinone red and titanium oxide. The visibility of (extinguishing agent) can be maintained. Thus, the inclusion of the masterbatch as a pigment in the resin fire extinguishing agent storage containers 10 and 20 not only enhances the aesthetics in a state where the contents of the fire extinguishing agent can be appropriately visually recognized, but also particularly the pressure accumulation type. It can also contribute to the improvement of gas barrier properties, which is an important performance for fire extinguishers.

  In addition, this embodiment does not prevent that the above-mentioned mixing rate exceeds 10%. As a result of investigations by the inventors, if the mixing ratio is within the range of 5% to 30%, it is confirmed that the gas barrier properties of the extinguishing agent storage containers 10 and 20 are improved as the mixing ratio increases. It was done. However, if the mixing ratio is more than 10%, the translucency of the resin is lowered, so that it is difficult to appropriately view the fire extinguisher as the content.

<Second Embodiment>
The pressure-accumulation fire extinguisher 200 according to the present embodiment includes the conditions and the manufacturing method according to the first embodiment, except that the pressure of the gas sealed in the fire extinguisher storage container 10 according to the first embodiment is different. The same. Therefore, the description which overlaps with 1st Embodiment may be abbreviate | omitted.

Also in this embodiment, a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas is sealed in the fire extinguisher storage container 10. Here, the air space 1 of this embodiment is 2033 cm ³ . Further, the ratio of the number of moles of helium (He) gas to the total number of moles of the number of moles of nitrogen (N ₂ ) gas as the inert gas and the number of moles of helium (He) gas as the light element gas is 7 %. In addition, when the helium (He) gas does not exist, the pressure in the fire extinguisher storage container 10 containing only nitrogen (N ₂ ) gas is sealed at about 0.88 MPa at 20 ° C.

In the present embodiment, the pressure in the extinguishing agent storage container 10 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 0.7 MPa or more and 0.86 MPa or less at 20 ° C. It is preferable that the gas is sealed in that helium (He) gas can maintain sufficient pressure accumulation even if “passage leakage” occurs over time.

As described above, in the present embodiment, helium (He) gas and nitrogen (N ₂ ) gas are sealed at a specific ratio, so that the accumulator-type fire extinguisher 200 has a relatively high temperature (for example, 20 ° C. or higher). Even when installed at 40 ° C. or lower), the pressure accumulation property can be stably maintained over a long period (in this embodiment, 8 years). That is, the pressure-accumulation fire extinguisher 200 according to this embodiment can maintain the pressure in the extinguishing agent storage container 10 at 0.7 MPa or more for 8 years. As a result, for example, an additional gas sealing operation for maintaining the pressure accumulation property becomes unnecessary.

  Furthermore, according to the pressure-accumulation fire extinguisher 200 of this embodiment, since helium (He) gas is enclosed in an appropriate range, it is possible to detect a leakage between components in the manufacturing process with high accuracy. Therefore, even if it has a resin-made fire extinguisher storage container, the pressure-accumulation fire extinguisher 200 with high reliability and mass productivity can be obtained.

<Third Embodiment>
The pressure-accumulation fire extinguisher 300 of this embodiment is different from the conditions and manufacturing method of the first embodiment except that the pressure of the gas sealed in the fire extinguisher storage container 10 of the first embodiment is different. The same. Therefore, the description which overlaps with 1st Embodiment may be abbreviate | omitted.

Also in this embodiment, a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas is sealed in the fire extinguisher storage container 10. Here, the air space 1 of this embodiment is 2033 cm ³ . Further, the ratio of the number of moles of helium (He) gas to the total number of moles of the number of moles of nitrogen (N ₂ ) gas as the inert gas and the number of moles of helium (He) gas as the light element gas is 7 %. In addition, when the helium (He) gas does not exist, the pressure in the fire extinguisher storage container 10 containing only nitrogen (N ₂ ) gas is sealed at about 0.88 MPa at 20 ° C.

In the present embodiment, the pressure in the extinguishing agent storage container 10 of nitrogen (N ₂ ) gas in the absence of helium (He) gas is 0.81 MPa or more and 0.91 MPa or less at 20 ° C. It is preferable that the gas is sealed in that helium (He) gas can maintain sufficient pressure accumulation even if “passage leakage” occurs over time.

As described above, in the present embodiment, helium (He) gas and nitrogen (N ₂ ) gas are sealed at a specific ratio, so that the pressure-accumulating fire extinguisher 300 is located at a relatively low temperature (for example, −20 ° C. Even when it is installed at 20 ° C. or lower), the pressure accumulation property can be stably maintained for a long period (in this embodiment, 8 years). That is, the pressure-accumulation fire extinguisher 300 of this embodiment can maintain the pressure in the extinguishing agent storage container 10 at 0.7 MPa or more for 8 years. As a result, for example, an additional gas sealing operation for maintaining the pressure accumulation property becomes unnecessary.

  Furthermore, according to the pressure-accumulation fire extinguisher 300 of this embodiment, since helium (He) gas is enclosed in an appropriate range, leakage between components in the manufacturing process can be detected with high accuracy. Therefore, even if it has a resin-made fire extinguisher storage container, the pressure-accumulation fire extinguisher 300 with high reliability and mass productivity can be obtained.

<Fourth Embodiment>
The pressure-accumulation fire extinguisher 400 of this embodiment is different from the conditions and manufacturing method of the first embodiment except that the pressure of the gas sealed in the fire extinguisher storage container 10 of the first embodiment is different. The same. Therefore, the description which overlaps with 1st Embodiment may be abbreviate | omitted.

Also in this embodiment, a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas is sealed in the fire extinguisher storage container 10. Here, the air space 1 of this embodiment is 2033 cm ³ . Further, the ratio of the number of moles of helium (He) gas to the total number of moles of the number of moles of nitrogen (N ₂ ) gas as the inert gas and the number of moles of helium (He) gas as the light element gas is 7 %. In addition, when the helium (He) gas does not exist, the pressure in the fire extinguisher storage container 10 containing only nitrogen (N ₂ ) gas is sealed at about 0.88 MPa at 20 ° C.

In the present embodiment, the pressure in the extinguishing agent storage container 10 of nitrogen (N ₂ ) gas in the absence of helium (He) gas is 0.81 MPa or more and 0.86 MPa or less at 20 ° C. It is preferable that the gas is sealed in that helium (He) gas can maintain sufficient pressure accumulation even if “passage leakage” occurs over time.

As described above, in the present embodiment, helium (He) gas and nitrogen (N ₂ ) gas are sealed at a specific ratio, so that the accumulator 400 is used in a relatively hot place from a relatively cold place. Even if it is installed under any temperature condition (for example, −20 ° C. or more and 40 ° C. or less), the pressure accumulation property can be stably maintained for a long time (in this embodiment, 8 years). . That is, the pressure-accumulation fire extinguisher 400 according to the present embodiment can maintain the pressure in the extinguishing agent storage container 10 at 0.7 MPa or more for 8 years. As a result, for example, an additional gas sealing operation for maintaining the pressure accumulation property becomes unnecessary.

  Furthermore, according to the pressure-accumulation fire extinguisher 400 of this embodiment, since helium (He) gas is enclosed in an appropriate range, leakage between components in the manufacturing process can be detected with high accuracy. Therefore, even if it has a resin-made fire extinguishing agent storage container, the pressure-accumulation fire extinguisher 400 with high reliability and mass productivity can be obtained.

<Fifth Embodiment>
The pressure-accumulation fire extinguisher 500 of this embodiment employs a fire extinguishing agent storage container 25 smaller than the fire extinguishing agent storage container 10 of the first embodiment, and gas sealed in the fire extinguishing agent storage container 25. The conditions are the same as those of the first embodiment and the manufacturing method except that the pressures of the first embodiment are different. Therefore, the volume of the air space 1 of the present embodiment n fire extinguishing agent storage container 25 is smaller than the air space 1 of the fire extinguishing agent storage container 10 of the first embodiment. In addition, the description which overlaps with 1st Embodiment may be abbreviate | omitted.

Also in the present embodiment, a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas is sealed in the fire extinguisher storage container 25. Here, the air space 1 of the present embodiment is 1734 cm ³ . The ratio of the number of moles of helium (He) gas to the total number of moles of the number of moles of nitrogen (N ₂ ) gas as the inert gas and the number of moles of helium (He) gas as the light element gas is 8 %. In addition, when the helium (He) gas is not present, the pressure in the fire extinguisher storage container 25 containing only nitrogen (N ₂ ) gas is sealed at about 0.88 MPa at 20 ° C.

In this embodiment, the pressure in the extinguishing agent storage container 25 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 0.7 MPa or more and 0.9 MPa or less at 20 ° C. It is preferable that the gas is sealed in that helium (He) gas can maintain sufficient pressure accumulation even if “passage leakage” occurs over time.

As described above, in the present embodiment, helium (He) gas and nitrogen (N ₂ ) gas are sealed at a specific ratio, and thus the accumulator-type fire extinguisher 500 is installed at room temperature (for example, 20 ° C.). In consideration of the place, the pressure accumulation property can be stably maintained for a long period (in this embodiment, 8 years). That is, the pressure-accumulation fire extinguisher 500 of this embodiment can maintain the pressure in the extinguishing agent storage container 25 at 0.7 MPa or more for 8 years. As a result, for example, an additional gas sealing operation for maintaining the pressure accumulation property becomes unnecessary.

Furthermore, according to the pressure-accumulation fire extinguisher 500 of this embodiment, since helium (He) gas is enclosed in an appropriate range, it is possible to detect a leak between components in the manufacturing process with high accuracy. Therefore, even if it has a resin-made fire extinguisher storage container, the pressure accumulation-type fire extinguisher 500 with high reliability and mass productivity can be obtained.
<Sixth Embodiment>
The pressure-accumulation fire extinguisher 600 of the present embodiment is different from the conditions and manufacturing method of the fifth embodiment except that the pressure of the gas sealed in the fire extinguisher storage container 25 of the fifth embodiment is different. The same. Therefore, the description overlapping with the first or fifth embodiment may be omitted.

Also in the present embodiment, a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas is sealed in the fire extinguisher storage container 25. Here, the air space 1 of the present embodiment is 1734 cm ³ . The ratio of the number of moles of helium (He) gas to the total number of moles of the number of moles of nitrogen (N ₂ ) gas as the inert gas and the number of moles of helium (He) gas as the light element gas is 8 %. In addition, when the helium (He) gas is not present, the pressure in the fire extinguisher storage container 25 containing only nitrogen (N ₂ ) gas is sealed at about 0.88 MPa at 20 ° C.

In this embodiment, the pressure in the extinguishing agent storage container 25 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 0.7 MPa or more and 0.844 MPa or less at 20 ° C. It is preferable that the gas is sealed in that helium (He) gas can maintain sufficient pressure accumulation even if “passage leakage” occurs over time.

As described above, in the present embodiment, since helium (He) gas and nitrogen (N ₂ ) gas are sealed at a specific ratio, the accumulator type fire extinguisher 600 is located at a relatively high temperature (for example, 20 ° C. or higher). Even when installed at 40 ° C. or lower), the pressure accumulation property can be stably maintained over a long period (in this embodiment, 8 years). That is, the pressure-accumulation fire extinguisher 600 of this embodiment can maintain the pressure in the extinguishing agent storage container 10 at 0.7 MPa or more for 8 years. As a result, for example, an additional gas sealing operation for maintaining the pressure accumulation property becomes unnecessary.

Furthermore, according to the pressure-accumulation fire extinguisher 600 of this embodiment, since helium (He) gas is enclosed in an appropriate range, it is possible to detect a leak between components in the manufacturing process with high accuracy. Therefore, even if it has a resin-made fire extinguisher storage container, the pressure-accumulation fire extinguisher 600 with high reliability and mass productivity can be obtained.
<Seventh Embodiment>
The pressure-accumulation fire extinguisher 700 of this embodiment is different from the conditions of the fifth embodiment and the manufacturing method except that the pressure of the gas sealed in the fire extinguisher storage container 25 of the fifth embodiment is different. The same. Therefore, the description overlapping with the first or fifth embodiment may be omitted.

Also in the present embodiment, a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas is sealed in the fire extinguisher storage container 25. Here, the air space 1 of the present embodiment is 1734 cm ³ . The ratio of the number of moles of helium (He) gas to the total number of moles of the number of moles of nitrogen (N ₂ ) gas as the inert gas and the number of moles of helium (He) gas as the light element gas is 8 %. In addition, when the helium (He) gas is not present, the pressure in the fire extinguisher storage container 25 containing only nitrogen (N ₂ ) gas is sealed at about 0.88 MPa at 20 ° C.

In this embodiment, the pressure in the extinguishing agent storage container 25 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 0.811 MPa to 0.9 MPa at 20 ° C. It is preferable that the gas is sealed in that helium (He) gas can maintain sufficient pressure accumulation even if “passage leakage” occurs over time.

As described above, in the present embodiment, helium (He) gas and nitrogen (N ₂ ) gas are sealed at a specific ratio. Therefore, the accumulator-type fire extinguisher 700 is placed at a relatively low temperature (for example, −20 ° C. Even when it is installed at 20 ° C. or lower), the pressure accumulation property can be stably maintained for a long period (in this embodiment, 8 years). That is, the pressure-accumulation fire extinguisher 700 according to the present embodiment can maintain the pressure in the extinguishing agent storage container 10 at 0.7 MPa or more for 8 years. As a result, for example, an additional gas sealing operation for maintaining the pressure accumulation property becomes unnecessary.

Furthermore, according to the pressure-accumulation fire extinguisher 700 of the present embodiment, since helium (He) gas is sealed in an appropriate range, it is possible to detect a leak between components in the manufacturing process with high accuracy. Therefore, even if it has a resin-made fire extinguisher storage container, the pressure accumulation-type fire extinguisher 700 with high reliability and mass productivity can be obtained.
<Eighth Embodiment>
The pressure-accumulation fire extinguisher 800 of this embodiment is different from the conditions of the fifth embodiment and the manufacturing method except that the pressure of the gas sealed in the fire extinguisher storage container 25 of the fifth embodiment is different. The same. Therefore, the description overlapping with the first or fifth embodiment may be omitted.

Also in the present embodiment, a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas is sealed in the fire extinguisher storage container 25. Here, the air space 1 of the present embodiment is 1734 cm ³ . The ratio of the number of moles of helium (He) gas to the total number of moles of the number of moles of nitrogen (N ₂ ) gas as the inert gas and the number of moles of helium (He) gas as the light element gas is 8 %. In addition, when the helium (He) gas is not present, the pressure in the fire extinguisher storage container 25 containing only nitrogen (N ₂ ) gas is sealed at about 0.88 MPa at 20 ° C.

In this embodiment, the pressure in the extinguishing agent storage container 25 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 0.811 MPa or more and 0.844 MPa or less at 20 ° C. It is preferable that the gas is sealed in that helium (He) gas can maintain sufficient pressure accumulation even if “passage leakage” occurs over time.

As described above, in this embodiment, helium (He) gas and nitrogen (N ₂ ) gas are sealed at a specific ratio, so that the accumulator 800 can be used in a relatively hot place from a relatively cold place. Even if it is installed under any temperature condition (for example, −20 ° C. or more and 40 ° C. or less), the pressure accumulation property can be stably maintained for a long time (in this embodiment, 8 years). . That is, the pressure-accumulation fire extinguisher 800 according to the present embodiment can maintain the pressure in the extinguishing agent storage container 10 at 0.7 MPa or more for 8 years. As a result, for example, an additional gas sealing operation for maintaining the pressure accumulation property becomes unnecessary.

Furthermore, according to the pressure-accumulation fire extinguisher 800 of the present embodiment, since helium (He) gas is sealed in an appropriate range, it is possible to detect a leak between components in the manufacturing process with high accuracy. Therefore, even if it has a resin-made fire extinguisher storage container, the pressure-accumulation fire extinguisher 800 with high reliability and mass productivity can be obtained.
<Ninth Embodiment>
The pressure-accumulation fire extinguisher 900 of this embodiment is different in the pressure of the gas enclosed in the fire extinguisher storage container 25 of the fifth embodiment, and the service life is that of the first to eighth embodiments. The conditions and the manufacturing method of the fifth embodiment are the same except for the shorter time. Therefore, the description overlapping with the first or fifth embodiment may be omitted.

Also in the present embodiment, a mixed gas of nitrogen (N ₂ ) gas and helium (He) gas is sealed in the fire extinguisher storage container 25. Here, the air space 1 of the present embodiment is 934 cm ³ . Further, the ratio of the number of moles of helium (He) gas to the total number of moles of the number of moles of nitrogen (N ₂ ) gas as the inert gas and the number of moles of helium (He) gas as the light element gas is 7 %. In addition, when the helium (He) gas is not present, the pressure in the fire extinguisher storage container 25 containing only nitrogen (N ₂ ) gas is sealed at about 0.88 MPa at 20 ° C.

In the present embodiment, the pressure in the extinguishing agent storage container 25 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 0.81 MPa or more and 0.86 MPa or less at 20 ° C. It is preferable that the gas is sealed in that helium (He) gas can maintain sufficient pressure accumulation even if “passage leakage” occurs over time.

As described above, in the present embodiment, helium (He) gas and nitrogen (N ₂ ) gas are sealed at a specific ratio, so that the accumulator-type fire extinguisher 900 is placed in a relatively hot place from a relatively cold place. Even when installed under any temperature condition (for example, −20 ° C. or more and 40 ° C. or less), the pressure accumulation property can be stably maintained for a long period (in this embodiment, 5 years). . That is, the pressure-accumulation fire extinguisher 900 of this embodiment can maintain the pressure in the fire extinguishing agent storage container 10 at 0.7 MPa or more for 5 years. As a result, for example, an additional gas sealing operation for maintaining the pressure accumulation property becomes unnecessary.

  Furthermore, according to the pressure-accumulation fire extinguisher 900 of this embodiment, since helium (He) gas is enclosed in an appropriate range, leakage between components in the manufacturing process can be detected with high accuracy. Therefore, even if it has a resin-made fire extinguisher storage container, the pressure-accumulation fire extinguisher 900 with high reliability and mass productivity can be obtained.

<Tenth Embodiment>
Incidentally, in the above embodiments, helium (He) gas to nitrogen (N ₂₎ the total number of moles obtained by summing the number of moles of helium (He) gas as moles and light element gas in the gas as an inert gas Although the ratio of the number of moles was 7%, the ratio is not limited to 7%. For example, when the ratio of the number of moles of helium (He) gas is 8%, the pressure in the fire extinguisher storage container 10 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 20 If it is within a predetermined pressure range at ° C., the same effects as those of the above-described embodiments can be obtained. Specifically, when no helium (He) gas is present, the gas in the fire extinguishing agent storage container 10 of nitrogen (N ₂ ) gas is 0.811 MPa or more and 0.844 MPa or less at 20 ° C. Can be stored in any temperature condition from a relatively low temperature location to a relatively high temperature location (for example, -20 ° C to 40 ° C). It can be maintained stably for a period.

<Eleventh embodiment>
By the way, even when the ratio of the number of moles of helium (He) gas is 5%, the pressure in the extinguishing agent storage container 10 of nitrogen (N ₂ ) gas when helium (He) gas is not present is As long as the pressure is within a predetermined pressure range at 20 ° C., the same effects as those of the above-described embodiments can be obtained. Specifically, in the absence of helium (He) gas, the gas in the nitrogen (N ₂ ) gas extinguishing agent storage container 10 is 0.811 MPa or more and 0.872 MPa or less at 20 ° C. Is enclosed. Thereby, even if it is a case where it is a case where it installs in any temperature conditions from a comparatively low temperature place to a comparatively high temperature place (for example, -20 degreeC or more and 40 degrees C or less), the pressure accumulation property of the fire extinguishing agent storage container 10 is improved. It can be stably maintained for a long period (for example, 8 years).

<Other embodiments>
Further, in each of the above-described embodiments, helium (He) gas is sealed in the extinguishing agent storage containers 10 and 20 as a light element gas in order to contribute to detection of “leakage between components”, but helium (He) gas is used. Even when hydrogen (H ₂ ) gas is sealed instead of the above, at least a part of the effects of the present embodiment can be achieved. However, since the gas held in the extinguishing agent storage containers 10 and 20 during use may be released together with the extinguishing agent toward the extinguishing target, it has the property of being very flammable like hydrogen (H ₂ ) gas. It is undesirable for gas to be included. Therefore, it is preferable to employ helium (He) gas as in the above-described embodiments.

In the first embodiment described above, the mixed gas in the extinguishing agent storage container 10 includes the number of moles of nitrogen (N ₂ ) gas as an inert gas and the mole of helium (He) gas as a light element gas. The ratio of the number of moles of helium (He) gas to the total number of moles combined with the number is 7%. However, the ratio is not limited to 7%. For example, when the ratio is set to 1%, which is the lower limit for the measurement by the gas leakage measuring device 190, the nitrogen (N ₂ ) gas extinguishing agent storage container 10 when no helium (He) gas is present. Even if helium (He) gas causes a “pass leak” over time, the gas is sealed so that the internal pressure becomes 0.7 MPa or more and 0.97 MPa or less at 20 ° C. Accumulated pressure can be maintained.

Further, the mixed gas of extinguishing agent storage container 10 in the second embodiment described above also, nitrogen as an inert gas (N ₂₎ number of moles of helium (He) gas as moles and light element gas in the gas The ratio of the number of moles of helium (He) gas with respect to the total number of moles of the above is not limited to 7%. For example, when the ratio is set to 1% in the same manner as described above, the pressure in the extinguishing agent storage container 10 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 0. Even when the gas is sealed so as to be 7 MPa or more and 0.91 MPa or less and installed in a relatively high temperature place (for example, 20 ° C. or more and 40 ° C. or less), the pressure accumulation property is maintained for a long time ( For example, it can be stably maintained for 8 years.

In addition, for the mixed gas in the extinguishing agent storage container 10 in the third embodiment described above, the number of moles of nitrogen (N ₂ ) gas as an inert gas and the mole of helium (He) gas as a light element gas are also included. The ratio of the number of moles of helium (He) gas to the total number of moles combined with the number is not limited to 7%. For example, when the ratio is set to 1% in the same manner as described above, the pressure in the extinguishing agent storage container 10 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 0. Even when it is installed in a relatively low temperature place (for example, −20 ° C. or more and 20 ° C. or less) by sealing the gas so that the pressure is 81 MPa or more and 0.97 MPa or less, the pressure accumulation property is maintained for a long time. It can be maintained stably (for example, for 8 years).

Further, regarding the mixed gas in the extinguishing agent storage container 10 in the fourth embodiment described above, the number of moles of nitrogen (N ₂ ) gas as an inert gas and the number of moles of helium (He) gas as a light element gas. The ratio of the number of moles of helium (He) gas with respect to the total number of moles of the above is not limited to 7%. For example, when the ratio is set to 1% in the same manner as described above, the pressure in the extinguishing agent storage container 10 of nitrogen (N ₂ ) gas when helium (He) gas is not present is 0. By sealing the gas so that it is 81 MPa or more and 0.91 MPa or less, it is installed under any temperature condition from a relatively low temperature place to a relatively high temperature place (for example, −20 ° C. or more and 40 ° C. or less). Even in this case, the pressure accumulating property can be stably maintained for a long period (for example, 8 years).

Further, in the embodiments described above, the pigment contained in the resin which forms the extinguishing agent storage vessel, was the perinone red or titanium oxide (TiO _2), pigments employed is not limited to them. For example, even if anthraquinone red or cyanine blue is used instead of the pigment described above, the same effects as those of the above-described embodiments can be achieved.

Further, in the embodiments described above, although nitrogen (N ₂₎ gas is employed as the inert gas, the inert gas is not limited to nitrogen (N ₂₎ gas. For example, a part or all of nitrogen (N ₂ ) gas may be changed to argon (Ar) gas. However, from the viewpoint of reducing the manufacturing cost, it is preferable to use only nitrogen (N ₂ ) gas as the inert gas.

Further, for example, in the first embodiment, the “predetermined time” is calculated based on the thickness of the thinnest region of the extinguishing agent storage container 10, but the calculation method is the safest standard in measurement, In other words, it is based on the situation where the possibility of causing the “passage leakage” is the lowest. Therefore, the “predetermined time” can be calculated based on other criteria. For example, if the sealing area of the situation as shown in FIG. 1 is formed, 1.2 mm, which is the thinnest thickness among the wall thickness of the mouth portion 91 (T ₁₎ and the wall thickness of the shoulder portion 92 (T ₂₎ Even if the “predetermined time” is calculated based on the above, the same effect as that of the above-described embodiment can be obtained. In this case, the “predetermined time” is 500 seconds. That is, those skilled in the art can understand that the “predetermined time” can vary within a certain range in accordance with the change in thickness.

  Further, in the first embodiment described above, the “predetermined time” is set to 10 minutes. In particular, when the resin constituting the fire extinguisher storage container contains a pigment, the gas barrier property is improved. As shown in FIG. 5A and the like, for example, setting the “predetermined time” to 1200 seconds is also a modification of the first embodiment. Conversely, in order to increase mass productivity or productivity, the “predetermined time” may be set to a time shorter than 10 minutes, for example, 30 seconds, 2 minutes, 5 minutes, or 7 minutes. It becomes possible based on each numerical data.

  Moreover, in each above-mentioned embodiment, although polyethylene naphthalate (PEN) is employ | adopted as resin which comprises a fire extinguisher storage container, resin employ | adopted is not limited to this. For example, a polyester resin obtained by polycondensation using mainly naphthalenedicarboxylic acid or terephthalic acid as a dicarboxylic acid component and mainly ethylene glycol or butanediol as a diol component, or a material mainly containing these polyester resins is a fire extinguisher. Even if it is adopted as a material for the storage container, it is considered that at least a part of the effect of the present invention is exhibited. In other words, it is considered that at least a part of the effects of the present invention can be achieved with a copolyester resin.

  Examples of other materials that can be used include polyolefins such as polyethylene and polypropylene, polyphenylene sulfide, polystyrene, and polycarbonate. However, among all the above materials, it is preferable from the viewpoint of strength to employ polyethylene terephthalate (PET) or polyethylene naphthalate (PEN). From the viewpoint of gas barrier properties, polyethylene naphthalate (PEN) is most preferably employed alone. That is, by adopting polyethylene naphthalate (PEN), a fire extinguisher storage container having high strength and excellent gas barrier properties can be obtained with higher accuracy.

  Moreover, the kind of fire extinguisher accommodated in the fire extinguisher storage container of the fire extinguisher of each above-mentioned embodiment is not specifically limited. Any known extinguishing agent can be employed as long as it does not affect the resin constituting the extinguishing agent container. Moreover, what was proposed conventionally can be employ | adopted suitably about the accommodation method of a fire extinguisher, and the material, shape, etc. of components, such as a hose and a nozzle.

  In the first embodiment described above, the safety stopper 35 is not attached. From the viewpoint of safety, the safety lever 35 may be used to fix the activation lever 33 so that it does not malfunction. Is a preferred embodiment.

  In addition, a form containing a known coating film or a known pigment may be disposed on the outer peripheral surface of the fire extinguisher storage container of the fire extinguisher of each of the embodiments described above. For example, the name of the manufacturer of the fire extinguisher and the film with the description and decoration for indicating the performance of the fire extinguisher are widely used, but their use does not hinder the effects of the above-described embodiments. .

  Furthermore, if the additive does not impair the effects of the above-described embodiments, the resin constituting the fire extinguisher storage container is a light stabilizer, an ultraviolet absorber, or for preventing discoloration and improving weather resistance. Known additives such as anti-aging agents can be appropriately blended.

  The disclosure of each of the above-described embodiments is described for explaining the embodiments, and is not described for limiting the present invention. In addition, modifications within the scope of the present invention including other combinations of the embodiments are also included in the claims.

  The pressure-accumulating fire extinguisher of the present invention can be maintained at a high gas pressure for a long time in a resin-made fire extinguisher storage container, and is extremely useful in the present and future fire extinguisher industries.

10, 20, 25 Fire extinguisher storage container 11 Fire extinguisher storage section 12 Male screw 30 Fire extinguisher hand lever 31 Cover 32 Fixing lever 33 Start lever 34 Tilting down 35 Safety stopper 40 Fire extinguisher hose 50 Support base 60 Fire extinguisher 70 Siphon tube 80 Gas permeation measuring device 81a Upstream space 81b Downstream space 82 Gas cylinder 83 Coupled meter 84 Sample for measurement 85a Heater 85b Heater adjuster 87 Turbo molecular pump 88 Rotary pump 91 Portion 92 Shoulder 93 Body 94 Bottom portion 100, 150, 200, 300, 400, 500, 600, 700, 800, 900 Accumulated fire extinguisher 110 Intermediate product of accumulator fire extinguisher 190 Gas leak measuring device 192 Chamber 194 Exhaust pump 196 Measuring unit

Claims (6)

It is molded seamlessly using resin, and has a fire extinguisher storage container having an opening,
The fire extinguisher is stored in the fire extinguisher storage container, and at least one inert gas selected from the group consisting of argon gas and nitrogen gas by closing the opening, and helium gas and hydrogen gas. At least one light element gas selected from the group consisting of:
In the absence of the light element gas, the pressure inside the extinguishing agent storage container of the inert gas is 0.7 MPa or more and 0.97 MPa, and the number of moles of the inert gas and the number of moles of the light element gas A pressure-extinguishing fire extinguisher in which the ratio of the number of moles of light element gas to the total number of moles of 1 is less than 10%. The pressure-accumulation fire extinguisher according to claim 1, wherein the pressure in the extinguishing agent storage container of the inert gas at 20 ° C in the absence of the light element gas is 0.7 MPa or more and 0.91 MPa or less. The pressure-accumulation fire extinguisher according to claim 1, wherein the pressure in the extinguishing agent storage container of the inert gas at 20 ° C in the absence of the light element gas is 0.81 MPa or more and 0.97 MPa or less. The pressure-accumulation fire extinguisher according to claim 1, wherein the pressure in the extinguishing agent storage container of the inert gas at 20 ° C in the absence of the light element gas is 0.81 MPa or more and 0.91 MPa or less. The resin contains a pigment, and the amount of the light element gas permeating through the extinguishing agent storage container is the total number of moles of the nitrogen (N ₂ ) gas and the helium (He) gas. It is said helium (He) 10% is the ratio of moles of gas relative to the number, in and saturation under 40 ° C., the amount of the light element gas passes the fire extinguishing agent storage container, 3.2 × 10 ^- The pressure-accumulation fire extinguisher according to any one of claims 1 to 4 , wherein the pressure is ⁸ (Pa · m ³ · mm) / (cm ² · s · MPa) or less. The pigment is perinone red, titanium oxide (TiO ₂ ), anthraquinone red, or cyanine blue.
The pressure-accumulation fire extinguisher according to claim 5 .