JP5635294B2 - Leak measurement method and leak measurement system - Google Patents

Description

  The present invention relates to a leak measurement method and a leak measurement system, and more particularly to a gas leak measurement method and a leak measurement system in a pressure-accumulating fire extinguisher including a resin-made extinguishing agent 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), but no specific proposals for individual technical problems have been disclosed yet.

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.

  Therefore, even when a pressure-accumulating fire extinguisher equipped with a resin fire extinguisher storage device is manufactured, it is necessary to always consider the possibility of gas leakage. That is, it is necessary to consider the mode of gas leakage due to insufficient sealing between the components of the accumulator fire extinguisher. This mode of gas leakage is also referred to as “inter-component leakage” for convenience. Therefore, how accurately the existence of this “leakage between components” is measured determines the feasibility of a pressure-accumulating fire extinguisher equipped with a highly reliable resin fire extinguisher storage device.

  The present invention solves the above-mentioned technical problem, and realizes 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 to the improvement of measurement technology to promote.

  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, even in the case of a pressure-accumulating fire extinguisher equipped with a resin-made fire extinguishing agent storage container, “inter-component leakage” exists. Therefore, the inventors of the present application carefully investigated and analyzed means for accurately measuring “leakage between parts”. As a result, in order to measure “leakage between parts” accurately and quickly, it is very beneficial to enclose a specific gas in a fire extinguisher storage container and limit the measurement area as much as possible. The inventors have found that. The present invention was created based on such a viewpoint.

  One leak measuring method of the present invention includes a closing step, an enclosing step, an exhausting step, and a measuring step. Specifically, the closing step is formed seamlessly using resin with a lid provided with a valve rod that engages with an activation lever to form a through path and allows the through path to be opened and closed. The aforementioned opening of the fire extinguishing agent storage container having the shoulder and the shoulder whose outer diameter increases as it proceeds in the depth direction is closed. Further, in the sealing step, at least one inert gas selected from the group consisting of argon gas and nitrogen gas, and at least one light element gas selected from the group consisting of helium gas and hydrogen gas, Through the above-mentioned fire extinguisher storage container. Further, in the exhaust process, after the above-described sealing process, by sealing the outer periphery of a part of the above-mentioned shoulder portion with the above-mentioned opening portion facing down, the above-described lid body and the opening portion are accommodated. After the sealed space is formed, the sealed space is exhausted. Moreover, a measurement process measures the quantity of the above-mentioned light element gas in the above-mentioned sealed space after the above-mentioned exhaust process.

  According to this leak measurement method, it is possible to accurately measure “leakage between components” due to insufficient sealing between the components of the resin accumulator. Therefore, even if a resin-made fire extinguisher storage container is used, the feasibility of a pressure-accumulating fire extinguisher that holds a gas for releasing the fire extinguisher for a long period of time (for example, up to the service life) at a high pressure is dramatically increased. .

  One leak measurement system of the present invention includes a first chamber, a first pump, and a measuring instrument. Specifically, the first chamber has an opening closed by a lid body that includes a valve rod that engages with an activation lever to form a through path and that allows the through path to be opened and closed, and in a depth direction. A shoulder portion having an outer diameter that increases as it progresses, and is selected from the group consisting of at least one inert gas selected from the group consisting of argon gas and nitrogen gas and helium gas and hydrogen gas through the through path. The outer periphery of a part of the shoulder is sealed with the opening of the fire extinguisher storage container seamlessly formed using a resin in which at least one light element gas is sealed. By doing so, a sealed space is formed in which the lid and the opening are accommodated. Further, the first pump exhausts the above-described sealed space. Further, the measuring device measures the amount of the light element gas in the sealed space.

  According to this leak measurement system, it is possible to accurately measure “inter-component leakage” due to insufficient sealing between the components of the resin accumulator. Therefore, even if a resin-made fire extinguisher storage container is used, the feasibility of a pressure-accumulating fire extinguisher that holds a gas for releasing the fire extinguisher for a long period of time (for example, up to the service life) at a high pressure is dramatically increased. .

  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 leak measurement method of the present invention or one leak measurement system of the present invention accurately measures “leakage between components” due to insufficient sealing between components of a resin accumulator fire extinguisher. Can do. Therefore, even if a resin-made fire extinguisher storage container is used, the feasibility of a pressure-accumulating fire extinguisher that holds a gas for releasing the fire extinguisher for a long period of time (for example, up to the service life) at a high pressure is dramatically increased. .

It is a block diagram including the partial cross section side view of the leak measurement system in the 1st Embodiment of this invention. It is a side view of the fire extinguisher storage container with which the opening part was obstruct | occluded with the cover body which the starting lever engaged, which is measured by the leak measurement system 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 an expanded side view of the cover body 31 with which the starting lever in the 1st Embodiment of this invention was engaged. It is an enlarged side view explaining the cover body 31 which the starting lever in the 1st Embodiment of this invention is not engaging for convenience. It is a perspective view which shows the starting lever in the 1st Embodiment of this invention. It is a perspective view which shows an example of a safety stopper.

  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 a partial cross-sectional side view showing the configuration of the leak measurement system 100 of the present embodiment. FIG. 2 is a side view of the fire extinguisher storage container 10 whose opening 13 is closed by the lid 31 engaged with the activation lever 33, which is measured by the leak measurement system 100. 3A is a front view of the extinguishing agent storage container 10, and FIG. 3B is a front sectional view of the extinguishing agent storage container 10. FIG. In addition, FIG. 4A is an enlarged side view of the lid 31 with which the activation lever 33 is engaged, and FIG. 4B is an enlarged side view for convenient explanation of the lid 31 with which the activation lever 33 is not engaged. is there.

  First, the leak measurement system 100 will be described. As shown in FIG. 1, the leak measurement system 100 according to the present embodiment mainly has a seal portion 102 (for example, an O-ring made of Teflon (registered trademark)) with an outer periphery of a part of the shoulder portion of the extinguishing agent storage container 10 closely. Thus, a chamber 101 in which a sealed space is formed, a first exhaust pump 104, a leak amount measuring unit 106, a second exhaust pump 107, and a control unit 108 are provided. Here, the measurement object of the leak measurement system 100 of the present embodiment is accommodated in the fire extinguisher storage container 10 with an insufficiently closed state of the lid 31 and the opening 13, in other words, insufficient sealing performance. And the presence and amount of leaked gas (ie, “part leak”). In addition, a known measuring instrument (manufactured by Yamaha Finetech Co., Ltd., model YLD-200A) was used for the measuring unit 106 of the present embodiment.

Here, the first exhaust pump 104 is used to exhaust the gas in the chamber 102 after the sealed space is formed as described above, and the second exhaust pump 107 is used to exhaust the space in the measurement unit 106. Used for. Further, when measurement is being performed, the chamber 102 and the measurement unit 106 communicate with each other via the opened valve 105. On the other hand, when the measurement is not performed, the valve 105 is closed, so that the chamber 102 and the measurement unit 106 are separated . Further, in the leak measurement system 100 of the present embodiment, the control unit 108 measures the amount of light element gas in the chamber 102 (specifically, the amount of gas leak that becomes “inter-component leak”). Monitor or control the exhaust and measurement processes in an integrated manner. A specific measurement method will be described in detail later.

  Next, the structure and manufacturing method of the fire extinguisher storage container 10 will be described. As shown in FIG. 2, FIG. 3A, and FIG. 3B, the fire extinguisher storage container 10 of the present embodiment includes an opening 13, but is not formed with a seam like a metal fire extinguisher storage container. Moreover, the fire extinguisher storage container 10 includes a fire extinguisher storage portion 11 and a male screw portion 12 formed in an opening 13 located at the upper portion of the fire extinguisher storage portion 11. When the male screw portion 12 and the lid body 31 are screwed together, the space in the extinguishing agent storage container 10 is ideally sealed. In addition, in FIG. 3A, the broken line and the continuous line for demonstrating the site | part of a fire extinguisher storage container are provided for convenience. Further, the fixing means for the extinguishing agent storage container 10 and the lid 31 is not limited to the above-described screwing, and known joining means can be applied. Furthermore, since the fire extinguisher storage container 10 of the present embodiment is made of resin (polyethylene naphthalate (PEN)) and has a substantially spherical bottom as will be described later, it is erected by a support base 50 fitted to the bottom. Supported as possible.

3B, for 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. Further, the wall thickness (T ₂ ) of the shoulder portion 92 whose outer diameter increases (becomes a curved surface in the present embodiment) as it goes in the depth direction of the extinguishing agent storage container 10 is 1.2 mm or more and 12 mm or less. 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. .

  Here, 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 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.

  Moreover, 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.

  By the way, the fire extinguisher storage container 10 of the present embodiment can be manufactured by a conventionally known resin molding method such as stretch blow molding, melt molding, etc. Among them, there is no seam except for the opening 13 and molding. Stretch blow molding is preferable because a container having a good state and an appropriate thickness can be obtained.

  Next, the structure, function, and manufacturing method of the lid 31 will be described. The lid body 31 of this embodiment is integrally molded by a known method using a resin (specifically, 6-nylon). A female screw portion (not shown) is formed inside the lid 31. As described above, the lid 31 is attached to the extinguishing agent storage container 10 by screwing the female screw part with the male screw part 12 formed in the extinguishing agent storage container 10. 4A and 4B, the lid body 31 and the fixing lever 31f are integrally formed. The lid 31 includes an activation lever engaging portion 31 a for engaging with the activation lever 33 and a raising / lowering hook engaging portion 31 b for engaging with the raising / lowering rod 34. In addition, the lid 31 includes a siphon tube fixing portion 31d for fixing the tip of the siphon tube 70 and a fire extinguishing agent hose fixing portion 31c for fixing the tip of the fire extinguishing agent hose. In order to allow the extinguishing agent 60 scheduled to be stored in the extinguishing agent storage container 10 to flow to the extinguishing agent hose in a part of the flow path 31e from the siphon tube fixing part 31d to the extinguishing agent hose fixing part 31c. A valve rod (valve) 32 made of a metal (specifically, SUS304) is disposed so as to be freely opened and closed using a spring.

  FIG. 5 is a perspective view showing the activation lever 33 of the present embodiment. FIG. 6 is a perspective view showing an example of a safety stopper. The activation lever 33 of this embodiment is integrally molded by a known method using resin (specifically, 6-nylon). The activation lever 33 includes a lever portion 33a, a thin portion 33b, and a lid engaging portion 33c. The activation lever 33 is connected to the lid 31 by engaging the lid engaging portion 33 c and the activation lever engaging portion 31 a of the lid 31. In addition, the lever portion 33a includes a first opening 33d into which a safety plug fitting rod 35c, which will be described later, is inserted in the future, and a second opening 33e through which the engagement protrusion 35a and the protrusion 35b of the safety plug 35 pass. Yes. The thin portion 33b is formed so thin that it can be bent by applying a pressing force. When a pressing force is applied to the lever portion 33a of the activation lever 33, the thin portion 33b bends without being able to withstand this pressing force. When the thin portion 33b is bent in this manner, the activation lever 33 rotates with respect to the lid 31 around the thin portion 33b.

  Although the drawing with the safety stopper 35 attached is not shown, the insertion rod 35c has a length that can be inserted into the first opening 33d provided in the activation lever 33 and the opening (not shown) provided in the raising / lowering rod 34. Have. Further, the engagement protrusion 35 a has a shape that can be engaged with the raising / lowering rod 34 through the second opening 33 e provided in the activation lever 33. When the fitting rod 35c of the safety plug 35 is fitted into the activation lever 33 and the raising / lowering rod 34, and the engagement protrusion 35a is engaged with the raising / lowering rod 34, the raising / lowering rod 34 and the activation lever 33 cannot be rotated. It becomes a state. On the other hand, when the safety stopper 35 is removed from the activation lever 33 and the raising / lowering rod 34, the raising / lowering rod 34 and the activation lever 33 become rotatable.

  In the present embodiment, the raising / lowering rod 34 is also integrally molded by a known method using resin (specifically, 6-nylon), like the start lever 33. Further, the raising / lowering bar 34 includes a thin portion 34a and a safety plug engaging portion 34b, and also includes an opening (not shown) into which the insertion rod 35c of the safety plug 35 is inserted. The raising / lowering rod 34 is connected to the lid 31 by engaging the lower end of the raising / lowering rod 34 with the raising / lowering rod engaging portion 31 b of the lid 31. The thin portion 34a is formed to be thin enough to be bent by applying a pressing force. When a pressing force is applied to the lever portion 33 a of the activation lever 33, the activation lever 33 rotates and the pushing lever 34 is applied with a pressing force by the activation lever 33. When the raising / lowering rod 34 applies a pressing force to the activation lever 33, the thin portion 34a bends without being able to withstand the pressing force. When the thin portion 34a is bent in this manner, the raising / lowering rod 34 rotates with respect to the lid 31 around the thin portion 34a.

By the way, in the leak measurement system 100 of the present embodiment, the detection target gas is limited to hydrogen (H ₂ ) or helium (He) gas which is a light element gas. This is because quick measurement can be performed by including the light element gas, which is relatively easy to detect, in the sealed gas. Then, in order to confirm the proper gas sealing, in other words, to confirm the pressure accumulation, it is necessary to enclose at least an amount of light element gas that can be detected by the leak measurement system 100 in the extinguishing agent storage container 10. .

  Therefore, the inventors, although costly, decided to enclose helium (He) gas, which is a light element gas necessary for measurement, in the fire extinguisher storage container 10, and then gas other than the light element gas. The mixing ratio 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, a value obtained by subtracting the volume of the extinguishing agent to be accommodated in the future from the volume of the extinguishing agent storage container 10 of the present embodiment (hereinafter referred to as “air space 1”) is 2033 cm ³ . In this embodiment, the mole of helium (He) gas with respect 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. The ratio of the numbers is 10%.

Next, a measurement method using the leak measurement system 100 of the present embodiment will be described. In this embodiment, first, the opening 13 of the extinguishing agent storage container 10 is closed by screwing the lid 31 and the male screw part 12 of the extinguishing agent storage container 10 that does not contain the extinguishing agent. . After the closing, the valve rod 32 is temporarily opened to allow nitrogen (N ₂ ) gas and helium (He) gas to flow into the fire extinguishing agent hose fixing portion 31 c for the extinguishing agent hose in the lid 31. It was enclosed in the fire extinguisher storage container 10 through the flow path 31e.

  When the sealing step is completed, the lid 31 engaged with the activation lever 33 and the closed opening 13 of the extinguishing agent storage container 10 are in a state in which the opening 13 faces downward in the chamber 101 of the leak measurement system 100. Is put in. In the chamber 101 of this embodiment, an opening is provided so that the seal portion 102 is in close contact with the outer periphery of a part of the shoulder portion 92 of the extinguishing agent storage container 10. In the present embodiment, the orthogonal projection of the activation lever 33 is formed outside the outer edge of the orthogonal projection of the sealed portion of the shoulder 92 in the extinguishing agent storage container 10. Accordingly, the lid body 31 including the start lever 33 cannot be fed into the chamber 101 only by the straight movement of the extinguishing agent storage container 10, but the state shown in FIG. It is possible to install.

When the shoulder portion 92 of the extinguishing agent storage container 10 is sealed by the seal portion 102, the gas in the chamber 101 that has become a sealed space is exhausted by the first exhaust pump 104. Note that the first exhaust pump 104 of the present embodiment is a rotary pump, and the pressure in the chamber 501 reaches 2.0 × 10 ¹ Pa in about 7 seconds.

Here, in this embodiment, since the valve 105 is closed when no measurement is performed, before the gas in the chamber 101 is exhausted by the first exhaust pump 104 at the latest, the space in the measurement unit 106 is Is exhausted by the second exhaust pump 107. The second exhaust pump 107 of this embodiment is a rotary pump with a mechanical booster, and the pressure in the space of the measurement unit 106 reaches 2.0 × 10 ¹ Pa in about 7 seconds. The reason why the exhaust by the second exhaust pump 107 is performed before the exhaust by the first exhaust pump 104 is to reduce the exhaust time of the measurement unit 106 as much as possible in the leak measurement of the present embodiment. Since the noise (N) level of the leak measurement system 100 of the present embodiment is 8.0 × 10 ⁻⁹ Pa · m ³ / s, the signal (S) level is preferably about 3.0 times that level. Therefore, since it is required that the space of the measurement unit 106 is sufficiently exhausted to detect a small amount of leak with high accuracy, the exhaust by the second exhaust pump 107 is exhausted before the exhaust by the first exhaust pump 104. It is preferred that this be done.

  After the exhaust by the first exhaust pump 104, the control unit 108 changes the valve 105 to the open state, and the measurement unit 106 starts measuring the presence and amount of light element gas. As a result, the presence or absence of “leakage between components” can be accurately measured.

<Other embodiments>
By the way, in each of the above-described embodiments, helium (He) gas is sealed in the extinguishing agent storage container 10 as a light element gas in order to contribute to the detection of “leakage between components”, but instead of helium (He) gas. Even when hydrogen (H ₂ ) gas is sealed, at least some of the effects of the present embodiment can be achieved. However, since the gas held in the extinguishing agent storage container 10 at the time of use may be released toward the extinguishing target together with the extinguishing agent, a gas having a very flammable property such as hydrogen (H ₂ ) gas is used. It is not desirable to be included. Therefore, it is preferable to employ helium (He) gas as in the above-described embodiments.

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.

  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.

  Since the leak measurement method and the leak measurement system of the present invention can quickly and appropriately measure whether or not a high gas pressure can be maintained in a resin fire extinguisher storage container for a long period of time, Very useful in the fire extinguisher industry.

DESCRIPTION OF SYMBOLS 10 Extinguishing agent storage container 11 Extinguishing agent storage part 12 Male thread part 13 Opening part 31 Cover body 31a Starting lever engaging part 31b Inclining hook engaging part 31c Extinguishing agent hose fixing part 31d Siphon pipe fixing part 31e Flow path 31f Fixing lever 32 Valve stem
33 Start lever 33a Lever part 33b Thin part 33c Lid engaging part 33d 1st opening 33e 2nd opening 34 Uprising 34a Thin part 34b Safety stopper engaging part 35 Safety stopper 35a Engaging protrusion 35b protrusion 35c Insertion rod DESCRIPTION OF SYMBOLS 50 Support stand 70 Siphon tube 91 Mouth part 92 Shoulder part 93 Body part 94 Bottom part 100 Leak measurement system 101 Chamber 102 Seal part 104 1st exhaust pump 106 Measurement part 107 2nd exhaust pump 108 Control part

Claims (3)

The lid is provided with a valve rod that engages with the start lever to form a through path and allows the through path to be opened and closed, and is formed seamlessly using resin and as it advances in the depth direction with the opening. A closing step of closing the opening of the extinguishing agent storage container having a shoulder with an increased outer diameter;
At least one inert gas selected from the group consisting of argon gas and nitrogen gas and at least one light element gas selected from the group consisting of helium gas and hydrogen gas pass through the through-passage in the fire extinguisher storage container. An encapsulation process encapsulated in,
After the sealing step, by sealing the outer periphery of a part of the shoulder with the opening facing downward, a sealed space in which the lid and the opening are accommodated is formed. An exhaust process for exhausting the enclosed space;
A leakage measuring method including a measuring step of measuring an amount of the light element gas in the sealed space after the exhausting step. The leak measurement method according to claim 1, further comprising a step of exhausting a measurement space having a measuring device for measuring the light element gas, which communicates with the sealed space via a valve, before the exhaust step. An opening actuation lever is closed by a lid which is engaged, together with obtain Bei a shoulder whose outer diameter increases as proceeds in the depth direction, at least is selected from the group consisting of A argon gas and nitrogen gas 1 The opening of the fire extinguisher storage container formed seamlessly using a resin, in which at least one light element gas selected from the group consisting of two inert gases and helium gas and hydrogen gas is sealed in a state of facing the Ruchi Yanba such an enclosed space in which a part of the outer circumference of the shoulder portion is the lid thus to be sealed and the opening is accommodated,
A first pump for exhausting the sealed space;
A measuring unit for measuring the amount of the light element gas separated from the sealed space by a valve;
A second pump for evacuating the measurement unit before evacuating the sealed space,
Leak measurement system.

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