JP2012250029A - Device and method of testing leakage in fire extinguisher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device and a method of testing leakage in a fire extinguisher, by which only a part having a possibility of leakage can be tested.SOLUTION: The device for testing leakage in the fire extinguisher takes, as a testing target, a fire extinguisher whose container 11 is seamlessly configured, and in which a handle and a hose can be attached to/detached from a valve case 14. In a chamber 20 whose one end 21 is closed and whose other end 22 is opened, a testing hole 24 into which the testing part 31 of a gas detector 30 can be inserted, is formed. Then, the other end 22 has a packing 23 installed and is used by attaching it closely to the container shoulder part 15 of the fire extinguisher.

Description

  The present invention relates to a fire extinguisher leak inspection apparatus and inspection method.

Accumulated fire extinguishers are difficult to detect even if there is a minute gas leak after function check and filling with pressurized gas. Usually, I put a large container in water and submerge it to see if bubbles are generated, but I can't find a slight leak. For this reason, the presence or absence of leakage was detected by leaving the gas gauge filled for about 1 day to 1 week and checking whether the pressure gauge pointer was lowered.
If it is a manufacturing site of a fire extinguisher, a small leak can be detected by a large leak testing machine. For example, the leak test method used at the manufacturing site is to fill the pressurized gas of the fire extinguisher with a mixed gas of helium and nitrogen and evacuate the chamber with the fire extinguisher in the chamber. Thus, a method of detecting leaked helium is used.
In Patent Document 1, if the confidentiality of the valve cannot be maintained, for example, the accumulated pressure in the container escapes from the periphery of the siphon tube between the liquid level in the siphon tube and the valve. A pressure-accumulating fire extinguisher has been proposed in which a fire extinguisher liquid from a siphon tube does not leak from a valve even if the confidentiality of the fire extinguisher cannot be maintained.

JP 2002-126113 A

Currently, there is a need for leak inspection methods and equipment that can be quickly and reliably added to the aging extinguisher water pressure test, etc., as a result of the revision of the ministerial ordinance.
In the case of a pressure-accumulating fire extinguisher using a seamless fire extinguishing chemical container, there are limited places where leakage may occur.

  Therefore, an object of the present invention is to provide a fire extinguisher leak inspection apparatus and an inspection method capable of performing a leak inspection only where there is a possibility of leakage.

The leak inspection apparatus for a fire extinguisher according to claim 1 is a leak inspection apparatus for a fire extinguisher in which a container is seamlessly configured, and a handle and a hose are inspected as a fire extinguisher that can be detached from a valve case, An inspection hole into which a gas detector inspection part can be inserted is formed in a chamber that is closed at one end and opened at the other end. Packing is provided at the other end, and the other end is in close contact with the container shoulder of the fire extinguisher. It is characterized by being used.
According to a second aspect of the present invention, in the leak inspection apparatus for a fire extinguisher according to the first aspect, an internal member is provided in the chamber so as to cover the valve case.
According to a third aspect of the present invention, in the leak inspection apparatus for a fire extinguisher according to the second aspect, the chamber has a cylindrical shape, and the outer shape of the inner member is rotatably fitted to the inner peripheral surface of the chamber. It is characterized by being.
According to a fourth aspect of the present invention, there is provided the leak inspection apparatus for a fire extinguisher according to the third aspect, wherein the internal member is a valve case in which an inspection part of a gas detector can be inserted into a portion where leakage is likely to occur in the valve case An inspection hole is formed, and the inspection hole of the chamber is formed at a position where the inspection hole of the chamber can be overlapped with the hole for inspection of the valve case by rotating the chamber with respect to the internal member. And a second inspection hole formed at a position where it can overlap the exhaust hole of the cap nut by rotating the chamber relative to the internal member.
A fifth aspect of the present invention is the fire extinguisher leak inspection apparatus according to any one of the first to fourth aspects, further comprising a fixing means for fixing the position of the gas detector. And
According to a sixth aspect of the present invention, in the leak inspection apparatus for a fire extinguisher according to any one of the first to fifth aspects, the chamber can be inserted with an inspection portion of a gas detector at one end. An inspection hole is formed and the other end is released.
According to a seventh aspect of the present invention, there is provided an inspection method using the leak inspection apparatus for a fire extinguisher according to the first aspect, wherein the fire extinguisher is turned over and the valve case is inserted into the chamber. The fire extinguisher and the other end of the chamber are brought into close contact by the dead weight of the fire extinguisher, the inspection part of the gas detector is inserted into the inspection hole, and the presence or absence of a leak is inspected by the gas detector. It is characterized by doing.
An inspection method of the present invention according to claim 8 is an inspection method using the leak inspection apparatus for a fire extinguisher according to claim 1, wherein the valve case is inserted into the chamber and the fire extinguisher is set upright. The fire extinguisher and the other end of the chamber are brought into close contact with each other by the dead weight of the chamber, the inspection part of the gas detector is inserted into the inspection hole, and the presence or absence of leakage is detected by the gas detector. It is characterized by inspecting.
The inspection method of the present invention according to claim 9 is an inspection method using the leak inspection device for a fire extinguisher according to claim 6, wherein the valve case is inserted into the chamber, and the dead weight of the chamber The fire extinguisher and the other end of the chamber are brought into close contact with each other, the inspection portion of the gas detector is inserted into the inspection hole, and the presence or absence of gas having a lighter specific gravity than air is inspected by the gas detector. It is characterized by that.

ADVANTAGE OF THE INVENTION According to this invention, the leak test | inspection of a fire extinguisher can be performed quickly and reliably.
Moreover, if it is set as the structure provided with the internal member in the chamber, the improvement of the leak detection accuracy of a fire extinguisher, the improvement of measurement efficiency, and the specification of a leak location will be attained.

External appearance perspective view which shows the fire extinguisher used as the test object of 1st Embodiment The figure which shows the state which removed the hose of the fire extinguisher from the valve case The figure which shows the state which removed the handle of the fire extinguisher from the valve case (A) A-A 'arrow sectional view of a fire extinguisher leak inspection apparatus according to the first embodiment, (b) a bottom view seen from the other end side. External view showing a fire extinguisher leak inspection apparatus according to the first embodiment The figure which shows the process of the inspection method by 1st Embodiment. The figure which shows the process of the inspection method by 1st Embodiment. Front explanatory drawing which showed only the leakage inspection apparatus by the A-A 'line arrow cross section of FIG. 3 in the use condition of the leakage inspection apparatus of the fire extinguisher by 1st Embodiment. Front explanatory drawing which shows the state which inserted the test | inspection part of the gas detector in the inspection hole of the leak inspection apparatus of the fire extinguisher of FIG. The front view which shows the state which fixed the gas detector of the leak inspection apparatus of the fire extinguisher by 1st Embodiment to the fixing means. The front view which shows the fire extinguisher used as the test object of 2nd Embodiment FIG. 11 is a front view showing the fire extinguisher with the handle and hose of the fire extinguisher of FIG. 11 removed from the valve case. (A) B-B 'arrow sectional drawing of the leak inspection apparatus of the fire extinguisher by 2nd Embodiment, (b) The bottom view seen from the other end side Bottom view of a fire extinguisher leak inspection apparatus according to the second embodiment The front view which shows the state which attached the internal member of the leak inspection apparatus of the fire extinguisher by 2nd Embodiment to the fire extinguisher of FIG. Front explanatory drawing which showed only the internal member of the leak test | inspection apparatus of FIG. 13 with the B-B 'arrow cross section of FIG. FIG. 11 is a front explanatory view showing only the leakage inspection apparatus in the cross-section taken along the line B-B ′ of FIG. Side surface explanatory drawing which shows the state which rotated the chamber of the leak inspection apparatus of the fire extinguisher of FIG. 17 90 degree | times around the internal member (A) C-C 'arrow sectional drawing of the fire extinguisher leak inspection apparatus by 3rd Embodiment, (b) The bottom view seen from the other end side FIG. 19 is a front explanatory view showing only the leakage inspection device in a cross-sectional view taken along the line C-C ′ of FIG. 19 in a use state of the leakage inspection device for a fire extinguisher according to the third embodiment.

(First embodiment)
A fire extinguisher leak inspection apparatus according to a first embodiment of the present invention will be described below.
FIG. 1 is an external perspective view showing a fire extinguisher to be inspected according to the present embodiment.
The fire extinguisher 10 to be inspected according to the present embodiment includes a container 11 that is seamlessly configured, and a handle 12 and a hose 13 that are detachable from a valve case 14.
FIG. 2 shows a state where the hose of the fire extinguisher is removed from the valve case.
FIG. 3 shows a state where the handle of the fire extinguisher is removed from the valve case.
As shown in FIGS. 2 and 3, the hose 13 and the handle 12 are detachably provided on the valve case 14 with screws.

4A is a cross-sectional view taken along the line AA ′ of the fire extinguisher leak inspection apparatus according to the present embodiment, and FIG. 4B is a bottom view seen from the other end side. It is.
FIG. 5 is an external view showing the fire extinguisher leak inspection apparatus according to the present embodiment.
As shown in FIGS. 4 and 5, the chamber 20 serving as an inspection device is formed in a cylindrical shape, one end 21 is closed, the other end 22 is opened, and the other end 22 is provided with a packing 23. The cylindrical inner space of the chamber 20 has a diameter that allows the valve case 14 to be inserted, and has a length that allows the other end 22 to contact the container shoulder 15 of the fire extinguisher 10. The other end 22 of the chamber 20 comes into close contact with the fire extinguisher 10 when the packing 23 provided there contacts the container shoulder 15.
An inspection hole 24 is formed in the outer wall surface of the chamber 20. The inspection hole 24 includes a hole that communicates with the inside of the chamber 20, and includes a diameter-expanded portion into which the inspection portion 31 of the gas detector 30 can be inserted.
The gas detector 30 may be a suction type or a diffusion type, but a suction type is suitable and detects a specific gas. Here, the suction type refers to a method for forcibly sucking a gas to be detected with a pump or the like, and the diffusion type refers to a method for allowing gas to naturally permeate without being forcibly sucked.

6 and 7 are diagrams showing the steps of the inspection method.
FIG. 8 is a front explanatory view showing only the leakage inspection device in a cross-sectional view taken along the line BB ′ of FIG. 3B in the use state of the fire inspection device leakage inspection device according to the present embodiment.
FIG. 9 is an explanatory front view showing a state in which the inspection unit of the gas detector is inserted into the inspection hole of the fire extinguisher leak inspection apparatus of FIG. 8.
As shown in FIG. 6, the fire extinguisher 10 is turned over and the valve case 14 is inserted into the chamber 20.
Then, as shown in FIGS. 7 and 8, the container shoulder 15 of the fire extinguisher 10 is brought into contact with the packing 23. Due to the dead weight of the fire extinguisher 10, the fire extinguisher 10 and the other end 22 of the chamber 20 are in close contact with each other, and the inside of the chamber 20 can be kept almost sealed.
Then, as shown in FIG. 9, the inspection unit 31 of the gas detector 30 is inserted into the inspection hole 24, and the presence or absence of leakage is inspected by the gas detector 30.
Note that the gas detector 30 may be inserted into the inspection hole 24 of the inspection unit 31 before or after the fire extinguisher 10 is brought into close contact.
Further, hydrogen, helium, chlorofluorocarbon, flammable gas (methane, LPG) CO ₂ (carbon dioxide), or the like can be used as the gas used for the inspection, which is selected by matching with the gas detector 30. An odor detector can also be selected as the gas detector 30.

  FIG. 10 is a front view showing a state in which the gas detector 30 of the fire extinguisher leak inspection apparatus according to the present embodiment is fixed to the fixing means 60. As shown in the figure, by fixing the gas detector 30 to the chamber 20 and disposing the tip of the inspection part 31 near the first inspection hole 24, the leak detection operation is facilitated. In addition, although the example which provided the fixing means 60 in the one end 21 side of the chamber 20 was shown in FIG. 10, the position and number which provide the fixing means 60 are not restricted to this.

  When the gas detector 30 is fixed by the fixing means 60, the tip of the inspection unit 31 may be positioned at a position where the gas in the inspection hole 24 can be detected as shown in FIG. If the tip of the inspection unit 31 is inserted into the inspection hole 24, the gas detection accuracy is improved.

Unlike those shown in FIGS. 7 and 8, as shown in FIG. 10, in the state where the fire extinguisher 10 is upright, the container shoulder 15 of the container 11 is brought into contact with the packing 23, and the dead weight of the chamber 20 The fire extinguisher 10 and the other end 22 of the chamber 20 may be brought into close contact with each other. Even in this state, the chamber 20 can be kept substantially sealed. For this reason, according to the leak inspection apparatus for a fire extinguisher of this embodiment, it is possible to perform a leak inspection of the fire extinguisher 10 in an upright state.
In addition, that the fire extinguisher 10 is “upright” means that the fire extinguisher 10 itself is maintained in a predetermined posture. The state in which the fire extinguisher 10 is placed so that the lower plane in the normally placed state is faced down corresponds to the state where the fire extinguisher 10 stands upright.

  As described above, according to the fire extinguisher leak inspection apparatus of the present embodiment, the fire extinguisher leak inspection can be performed quickly and reliably.

(Second Embodiment)
A fire extinguisher leak inspection apparatus according to a second embodiment of the present invention will be described below. The fire extinguisher leak inspection apparatus according to the present embodiment is different from the first embodiment in the configuration including an internal member disposed so as to cover the valve case in the chamber. In addition, in this embodiment and subsequent embodiment, the same code | symbol is attached | subjected to what has the same function as the already demonstrated member, and description is abbreviate | omitted.

FIG. 11 is a front view showing a fire extinguisher to be inspected according to the present embodiment.
As shown in the figure, the fire extinguisher 10 to be inspected according to the present embodiment has a valve case 14 (see FIG. 12) attached to a seamlessly configured container 11 with a cap nut 16.

  The container 11 can be configured seamlessly by, for example, extruding an ingot of aluminum, magnesium, copper, iron, or an alloy thereof. In this way, by using a metal extruded product, leakage from the container 11 itself is eliminated. In the fire extinguisher 10 of the present embodiment including the metal container 11 configured seamlessly, the locations where leakage may occur are the valve case 14 and the cap nut 16. According to the fire extinguisher leak inspection apparatus of the present embodiment, it is possible to quickly and surely inspect only a portion where leakage may occur.

  The valve case 14 is usually manufactured by die casting, and then mounting portions 18 and 19 for mounting the hose 13 and the pressure gauge 17 are formed. The valve case 14 manufactured by die casting usually does not leak from its smooth surface. The portions where there is a possibility of leakage are the attachment portions 18 and 19 formed by processing such as threading.

  When the valve case 14 is manufactured, when a molten metal is poured into a mold and cooled and contracts, a hollow portion (nest) may be formed inside the metal. In rare cases, the nests appearing on the surfaces of the attachment portions 18 and 19 processed after manufacture may communicate with the inside of the container 11 of the valve case 14. In such a case, the gas in the container 11 leaks from the surfaces of the attachment portions 18 and 19 to the outside through the nest. In FIG. 11, the attachment portion 18 is a portion used for attaching the hose 13 to the valve case 14, and the attachment portion 19 is a portion used for attaching the pressure gauge 17 to the valve case 14.

  The cap nut 16 is provided with an exhaust hole 161 for exhausting the gas inside the container 11 when not completely removed from the container 11. For this reason, when a foreign object is caught in the packing (not shown) between the cap nut 16 and the container 11, the gas in the container 11 may leak to the outside from the exhaust hole 161. FIG. 11 shows an example in which the exhaust hole 161 is located on the pressure gauge 17 side of the valve case 14, but this is only an example, and the position of the exhaust hole 161 is usually different for each fire extinguisher 10.

  12 is a front view showing a state where the hose of the fire extinguisher of FIG. 11 is removed from the valve case. The fire extinguisher leak inspection apparatus according to the present embodiment inspects the fire extinguisher for leakage in a state where the hose 13 and the handle 12 are detached from the valve case 14 as shown in FIG. 9).

  13A is a cross-sectional view taken along the line BB ′ of FIG. 13B of the fire extinguisher leak inspection apparatus according to the present embodiment, and FIG. 13B is a bottom view as viewed from the other end side. is there. As shown in FIG. 13, the chamber 40 of the present embodiment includes an internal member 50 disposed inside the chamber 40 so as to cover the valve case 14. Thus, by providing the internal member 50 separate from the chamber 40 in the chamber 40, the volume of the space formed in the chamber 40 can be reduced (FIG. 13A, FIG. 4). a) Contrast). Therefore, when a leak occurs in the fire extinguisher 10, the leaked gas can be prevented from being diluted in the space in the chamber 40, and a state suitable for detection by the gas detector 30 can be achieved. For this reason, it is possible to improve the detection accuracy of the fire extinguisher leak inspection apparatus.

The chamber 40 has a cylindrical shape, and the external shape of the internal member 50 is a shape that fits along the inner peripheral surface of the chamber 40. For this reason, the inner member 50 can be rotated in the chamber 40 in a state where the inner member 50 is fitted in the chamber 40 and the outer side surface thereof is in contact with the inner side surface of the chamber 40. In the same state, the chamber 40 rotates around the internal member 50.
FIG. 14 shows an example of the positional relationship between the chamber 40 before and after the chamber 40 rotates relative to the central axis of the cylinder. As shown in FIG. 14A, the internal member 50 can freely rotate around the chamber 40 in the direction indicated by the double-sided arrow in the same drawing.

  A first inspection hole 41 and a second inspection hole 42 are formed on the side surface of the chamber 40 to communicate the inside and the outside. Further, a valve case inspection hole 51 into which the inspection part 31 of the gas detector 30 can be inserted is formed in the internal member 50 at a portion corresponding to a portion where leakage is likely to occur in the valve case 14.

,
The first inspection hole 41 is formed at a position where it can overlap with the valve case inspection hole 51 by rotating the chamber 40 around the internal member 50. For this reason, if the chamber 40 is rotated and the first inspection hole 41 and the valve case inspection hole 51 are overlapped, it is possible to accurately detect leakage in the mounting portion 18 where leakage is likely to occur in the valve case 14. . Note that the overlap of the first inspection hole 41 and the valve case inspection hole 51 means that at least a part of the horizontal projections of both overlap. In order to improve the leakage detection accuracy, it is preferable to match the vertical cross-sectional shape of the first inspection hole 41 with the vertical cross-sectional shape of the valve case inspection hole 51.

  A cutout 52 is formed in the internal member 50 of the present embodiment so as not to cover the surface of the valve case 14 to which the pressure gauge 17 is attached. For this reason, if the inspection part 31 of the gas detector 30 is inserted into the first inspection hole 41 in a state where the first inspection hole 41 is located in front of the pressure gauge 17, Leakage can be detected (see FIGS. 18 and 9). In addition, a communication hole 53 between the inner side and the outer side of the internal member 50 is also formed on the surface on the one end 21 side of the chamber 40 when the internal member 50 is fitted in the chamber 40. When measuring a gas lighter than air using a chamber 70 (see FIGS. 19 and 20) described later instead of the chamber 40, the leaked gas can be detected through the communication hole 53 and the inspection hole 71.

  The second inspection hole 42 is formed at a position overlapping the exhaust hole 161 of the cap nut 16 by rotating the chamber 40 around the internal member 50. With this configuration, the leakage from the exhaust hole 161 can be easily detected by rotating the chamber 40. Here, the fact that the second inspection hole 42 and the exhaust hole 161 overlap is the same as that described for the first inspection hole 41 and the valve case inspection hole 51. The same applies to the relationship between the vertical sectional shapes of the two.

  As described above, the chamber 40 is configured to be freely rotatable around the internal member 50. With this configuration, first, the position of the first inspection hole 41 can be changed to easily identify which of the attachment portion 18 and attachment portion 19 of the valve case 14 is the cause of leakage. Further, since the second inspection hole 42 can be adjusted to the position of the different exhaust hole 161 for each fire extinguisher 10 by rotating the chamber 40, it is possible to easily measure the leakage from the exhaust hole 161. .

  Therefore, in addition to improving measurement accuracy, it is also useful for identifying the cause of leakage. If there is a processed part of the valve case 14 in addition to the attached part 18 and the attached part 19, if the valve case inspection hole 51 is provided at a position corresponding to the processed part, leakage from the processed part is detected. be able to.

Based on FIGS. 15-18, the inspection method by the leak inspection apparatus of the fire extinguisher of this embodiment which consists of the chamber 40 and the internal member 50 is demonstrated.
In this embodiment, the valve case 14 and the cap nut 16 are inserted into the chamber 40, the fire extinguisher 10 is erected without being overturned, and the extinguisher 10 and the other end 22 of the chamber 40 are caused by the dead weight of the chamber 40. And the inspection part 31 of the gas detector 30 is inserted into the first inspection hole 41 or the second inspection hole 42, and the gas detector 30 inspects for the presence or absence of leakage.

FIG. 15 is a front view showing a state in which the internal members of the fire extinguisher leak inspection apparatus according to the present embodiment are attached to the fire extinguisher of FIG. FIG. 16 is a front explanatory view showing only the internal member 50 of the leakage inspection apparatus in a cross section taken along line BB ′ in FIG.
As shown in FIGS. 15 and 16, the internal member 50 is located at a position where the valve case inspection hole 51 corresponds to the attachment portion 18 in a state of being attached so as to cover the valve case 14. The internal member 50 is provided with a notch 52 so as not to cover the attachment portion 19 for attaching the pressure gauge 17 to the valve case 14.

  FIG. 17 is a front explanatory view showing only the leakage inspection device in a cross section taken along line BB ′ of FIG. 13B in a state where the leakage inspection device for the fire extinguisher according to the present embodiment is attached to the fire extinguisher of FIG. It is. FIG. 18 is an explanatory side view showing a state in which the chamber 40 of the fire extinguisher leakage inspection apparatus of FIG. 16 is rotated around the internal member 50 by 90 degrees.

  As shown in FIG. 13, the chamber 40 of this embodiment is provided with a first inspection hole 41 and a second inspection hole 42 arranged in the vertical direction. For this reason, as shown in FIG. 17, when the mounting portion 18 of the valve case 14 and the exhaust hole 161 of the cap nut 16 are positioned in directions different by 90 degrees, the gas detector 30 is connected to the second inspection hole 42. By inserting the inspection unit 31 (see FIG. 9), the inspection unit 31 of the gas detector 30 cannot be positioned at a position suitable for detection of leakage from the exhaust hole 161. Therefore, as shown in FIG. 17, for example, first, the first inspection hole 41 is overlaid on the valve case inspection hole 51, and the inspection portion 31 is inserted from the first inspection hole 41 and the valve case inspection hole 51. Then, leakage from the attachment portion 18 is detected. Thereafter, the chamber 40 is rotated 90 degrees around the internal member 50.

  18 is an explanatory side view showing a state in which the chamber of the fire extinguisher leak inspection apparatus of FIG. 17 is rotated 90 degrees around the internal member. In the state shown in the figure, the first inspection hole 41 overlaps the notch 52 of the internal member 50, and the second inspection hole 42 overlaps the exhaust hole 161 of the cap nut 16. Therefore, by inserting from the first inspection hole 41, the inspection unit 31 is positioned at a position suitable for inspecting the leakage from the mounting portion 19 of the pressure gauge 17, and the gas leakage is inspected. Can do. Further, by inserting from the second inspection hole 42, the inspection part 31 can be positioned at a position suitable for inspecting leakage from the exhaust hole 161, and gas leakage can be detected.

  Unlike the examples shown in FIGS. 17 and 18, the exhaust hole 161 may be located in a different direction from the pressure gauge 17. In such a case, after inspecting for leakage from the attachment portion 19, the chamber 40 may be rotated to detect leakage from the exhaust hole 161. The order of detection described above is merely an example, and measurement may be performed in another order.

  As described above, by providing the internal member 50 in the chamber 40, the volume in the chamber 40 can be reduced and the detection accuracy of leakage can be improved. In addition, since the exhaust hole 161 and the second inspection hole 42 can be overlapped by rotating the chamber 40, the operation of detecting leakage from the exhaust hole 161 can be performed efficiently. Furthermore, it is also possible to specify the site where the leak has occurred.

(Third embodiment)
The fire extinguisher leak inspection apparatus according to the present embodiment is different from that in the above-described embodiment in a configuration in which an inspection hole into which an inspection unit of a gas detector can be inserted at one end.
19A is a cross-sectional view taken along the line CC ′ of FIG. 19B of the fire extinguisher leak inspection apparatus according to the present embodiment, and is a bottom view seen from the other end side of FIG. 19B. FIG. 20 is a front explanatory view showing only the leak test apparatus in a cross-sectional view taken along the line CC ′ of FIG. 19 (b), showing a use state of the leak test apparatus for a fire extinguisher according to the present embodiment.

As shown in these drawings, the chamber 70 of the present embodiment is formed with an inspection hole 71 at one end 21 into which the inspection portion 31 (see FIG. 9) of the gas detector 30 can be inserted.
Then, the valve case 14 and the cap nut 16 are inserted into the chamber, and the fire extinguisher 10 and the other end 22 of the chamber 70 are brought into close contact with each other by the dead weight of the chamber 70, and the inspection portion 31 of the gas detector 30 is connected to the inspection hole 71. The gas detector 30 can be inspected for leaks.

  As described above, the inspection hole of the chamber of the present embodiment is formed on one end side that is above when gas is detected. For this reason, it is suitable especially when the gas (gas) lighter than the air which accumulates in the upper side in a chamber is a detection target. Here, examples of the gas lighter than air include hydrogen and helium.

  The present invention is suitable for leak inspection of a fire extinguisher in a site where a fire extinguisher is actually installed such as a business establishment.

DESCRIPTION OF SYMBOLS 11 Container 15 Container shoulder 16 Cap nut 161 Exhaust hole 20, 40, 70 Chamber 21 One end 22 Other end 23 Packing 24, 71 Inspection hole 30 Gas detector 31 Inspection part 41 1st inspection hole 42 For 2nd inspection Hole 50 Internal member 51 Valve case inspection hole

Claims (9)

A fire extinguisher leakage inspection device for a fire extinguisher whose container is seamlessly configured and the handle and hose are removable from the valve case.
The inspection hole into which the inspection part of the gas detector can be inserted is formed in the chamber whose one end is closed and the other end is opened,
A packing is provided at the other end,
The fire extinguisher leak inspection apparatus, wherein the other end is used in close contact with a container shoulder of the fire extinguisher.   2. The fire extinguisher leak inspection apparatus according to claim 1, further comprising an internal member disposed to cover the valve case in the chamber. The chamber is cylindrical;
3. The fire extinguisher leak inspection apparatus according to claim 2, wherein the outer shape of the inner member is a shape that fits rotatably on the inner peripheral surface of the chamber. The internal member is formed with a valve case inspection hole into which a gas detector inspection part can be inserted in a portion where leakage easily occurs in the valve case.
The inspection hole of the chamber is
A first inspection hole formed at a position where the chamber can be overlapped with the valve case inspection hole by rotating the chamber relative to the internal member;
The second inspection hole formed at a position where the chamber can be overlapped with the exhaust hole of the cap nut by rotating the chamber with respect to the internal member. Fire extinguisher leak inspection device.   5. The fire extinguisher leak inspection apparatus according to claim 1, further comprising a fixing unit configured to fix a position of the gas detector.   The chamber according to any one of claims 1 to 5, wherein an inspection hole into which an inspection part of a gas detector can be inserted at one end and the other end is opened. The fire extinguisher leak inspection device described. An inspection method using the fire extinguisher leakage inspection apparatus according to claim 1, wherein the fire extinguisher is turned over, and the valve case is inserted into the chamber.
By the dead weight of the fire extinguisher, the fire extinguisher and the other end of the chamber are brought into close contact with each other,
An inspection method, wherein the inspection portion of the gas detector is inserted into the inspection hole, and the presence or absence of leakage is inspected by the gas detector. An inspection method using the fire extinguisher leak inspection apparatus according to claim 1,
Inserting the valve case into the chamber;
With the fire extinguisher upright, by the dead weight of the chamber, the fire extinguisher and the other end of the chamber are in close contact,
An inspection method, wherein the inspection portion of the gas detector is inserted into the inspection hole, and the presence or absence of leakage is inspected by the gas detector. An inspection method using the fire extinguisher leak inspection apparatus according to claim 6,
Inserting the valve case into the chamber;
By the dead weight of the chamber, the fire extinguisher and the other end of the chamber are brought into close contact with each other,
An inspection method, wherein the inspection portion of the gas detector is inserted into the inspection hole, and the presence or absence of a gas having a specific gravity lighter than air is inspected by the gas detector.