JP2002028257A - Discharge tester for fire hydrant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge tester for a fire hydrant which facilitates a restoration work after the discharge test work of the fire hydrant and can save the working time. SOLUTION: This discharge tester has a tubular body, a connecting base part and a nozzle connecting end capable of connecting a fire extinguishing nozzle and has a pressure regulating means for generating the pressure drop equal to the pressure drop generated in a fire extinguishing agent flowing in a fire extinguishing hose side flow passages in the fire extinguishing agent flowing in a discharge tester side flow passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge inspection device for inspecting a discharge pressure and a discharge amount of a fire hydrant device installed in, for example, a tunnel or the like.

[0002]

2. Description of the Related Art A fire hydrant device installed in a tunnel, for example, generally has a fire extinguishing hose having a base end connected to a fire extinguishing agent supply source and having a nozzle at a distal end portion. It is used to extinguish a fire generated by a fire extinguishing agent discharged from a nozzle. In a fire hydrant device provided with such a fire hose, the fire hose is normally wound and housed in the device box, and is drawn out from the device box when a fire occurs.

In the above fire hydrant device, whether the fire hydrant device has a predetermined discharge function and discharge performance, for example, the discharge pressure and discharge amount of a fire extinguishing agent discharged from a nozzle through a fire extinguishing hose is determined. Conventionally, when checking whether or not the value is satisfied, a pressure gauge is connected to the front of the nozzle, and all fire-extinguishing hoses are caught, that is, the drawn-out amount is 0 m, or a fire occurs. The fire extinguishing hose was pulled out according to the usage conditions at the time, and the inspection was carried out by measuring the discharge pressure of the fire extinguishing agent discharged from the nozzle. Therefore, if the release pressure is measured, the release amount can be confirmed accordingly.)

[0004]

However, the fire extinguisher hose in the fire hydrant device as described above uses a shape-retaining hose or a rubber hose so that a necessary amount of the fire extinguishing hose can be pulled out and discharged when a fire occurs. However, since it is necessary to prevent freezing after release,
The fire hose must be pulled out to drain any residual water from the fire hose, and then the fire hose must be rolled up and contained. For this reason, after performing the discharge inspection as described above, the fire extinguishing hose must be pulled out to discharge the residual water in the fire extinguishing hose, and then the fire extinguishing hose must be re-engaged and stored again. The subsequent recovery work was very difficult, and the time required for the recovery work was also long.

The present invention has been made in view of the above circumstances, and in a fire hydrant device, a discharge inspection device for a fire hydrant device, which can facilitate a recovery operation after the discharge inspection operation and can shorten the work time required for the operation. The purpose is to obtain.

[0006]

According to the present invention which achieves the above object, the invention comprises a fire hydrant valve and a fire extinguishing hose provided on a secondary side of the fire hydrant valve and having a nozzle at a tip end. An emission inspection device used for a fire hydrant device, the emission inspection device includes a tubular body, a connection base, and a nozzle connection end portion to which a fire-extinguishing nozzle can be connected, and fire extinguishing flowing through the fire-extinguishing hose-side flow path. A fire extinguisher device for use in a fire hydrant device, comprising a pressure adjusting means for causing a pressure loss equivalent to a pressure loss occurring in the fire extinguishing agent to flow into the fire extinguishing agent flowing through the discharge inspection device side flow path.

[0007] Further, a discharge inspection device used for a fire hydrant device provided with a fire hydrant valve and a fire extinguisher hose provided on a secondary side of the fire hydrant valve and having a nozzle at a tip end, wherein the discharge inspection device comprises: It is provided on the secondary side of the three-way switching valve provided on the primary side of the fire-extinguishing hose of the fire hydrant device,
The discharge check device performs discharge check of the fire hydrant device by the three-way switching valve switching its secondary flow path from the fire extinguishing hose flow path to the discharge check device flow path. The discharge inspection device further includes a tubular body, a connection base connected to the three-way switching valve, and a nozzle connection end to which a fire-extinguishing nozzle can be connected, and flows through the fire-extinguishing hose-side flow path. A discharge inspection device used for a fire hydrant device, comprising a pressure adjusting means for causing a pressure loss equivalent to a pressure loss generated in a fire extinguishing agent to a fire extinguishing agent flowing through the discharge inspection device side flow path.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. First, an embodiment of a discharge inspection device used for a fire hydrant device of the present invention will be described. In FIG. 1, reference numeral 1 denotes a fire hydrant device installed in, for example, a tunnel or the like, which has a pressure regulating valve 2, a fire hydrant valve 3, a three-way switching valve 4, and a nozzle 6 at a tip end through a pipe P from a primary side. The hose 5 is provided. Although not shown, the primary side of the pressure regulating valve 2 is connected to a water supply source.
The fire extinguishing water is released to extinguish the fire. If necessary, the fire hydrant device 1 may be provided with a fire extinguishing agent supply source, for example, a foam concentrate supply source, and the foam concentrate may be added to the fire extinguishing water and discharged from the nozzle 6.

Reference numeral 7 denotes a discharge inspection device having a flow path inside the device, which has a tubular body 7c and a connection base 7a connected to the three-way switching valve 4, and is adapted to the type of nozzle of the fire hydrant device to be inspected. And a nozzle connection end 7b to which a nozzle selected as appropriate can be connected.
Is provided with a pressure gauge 8 for measuring the discharge pressure of the fire extinguishing agent discharged from the tank. The tubular body 7c is formed of a flexible material in consideration of ease of handling at the time of inspection of the discharge inspection device 7, and is formed of, for example, a shape-retaining hose or a rubber hose.
Further, the discharge inspection device 7 flows in a flow path from the three-way switching valve 4 of the fire hydrant device 1 to the discharge nozzle 6 of the fire-extinguishing hose 5 in a state where the discharge nozzle is connected to the nozzle connection end 7b. It is configured such that a pressure loss equivalent to the pressure loss generated in the fire extinguishing agent is caused in the fire extinguishing agent flowing in the discharge inspection device 7. Specifically, although not shown, a pressure adjusting means, for example, an orifice is provided in the flow path in the discharge inspection device 7. In addition, as a nozzle connected to the nozzle connection end portion 7b of the emission inspection device 7, the nozzle 6 of the fire hydrant device 1 may be moved and connected at the time of inspection as shown in FIG.

The three-way switching valve 4 has one inlet 4c and two inlets 4c.
There are two outlets 4a, 4b, and the inlet 4c is connected to a primary pipe P of the three-way switching valve 4, and the one outlet 4a is connected to the fire extinguishing hose 5 via the pipe P. The three-way switching valve 4 has an outlet 4a in an open state so that the fire can be extinguished by discharging a fire extinguishing agent from the nozzle 6 through the fire extinguishing hose 5 at all times, that is, during standby for fire. 4b is in a closed state. In this state, when the fire hydrant valve 3 is opened, the fire extinguishing agent flows from the three-way switching valve 4 to the flow path on the fire extinguishing hose 5 side, and is discharged from the nozzle 6. That is, in this state, the fire extinguishing agent can be discharged from the nozzle 6 toward the fire.

The discharge inspection device 7 is connected to the other outlet 4b of the three-way switching valve 4 by a connection base 7a. Therefore, the discharge inspection device 7 is provided with the three-way switching valve 4.
Is connected to the secondary side of the three-way switching valve 4,
Two flow paths that can be switched between the flow path on the fire extinguishing hose 5 side and the flow path on the discharge inspection device 7 side are formed.

A discharge check device 7 is connected to the three-way switching valve 4,
When the three-way switching valve 4 is operated and the outlet 4a is in the open state and the outlet 4b is in the closed state, the outlet 4a is closed and the outlet 4b is in the open state. Is switched from the flow path on the fire hose 5 side to the flow path on the inspection device 7 side. When the fire hydrant valve 3 is opened in this state, the fire extinguishing agent flows into the flow path from the three-way switching valve 4 to the inspection device 7. That is, if in this state,
The emission inspection device 7 enables the emission inspection of the fire hydrant device 1 to be performed. In the present invention, the three-way switching valve 4
Since the emission inspection is performed by connecting the emission inspection device 7 to the secondary side of the device, the emission inspection device 7 can perform the inspection.
That is, the configuration including the three-way switching valve 4 is on the primary side thereof (when the fire extinguishing nozzle 6 is moved to the emission inspection device 7 for inspection, the fire extinguishing nozzle 6 can also be inspected).

Regarding the position where the three-way switching valve 4 is provided, the three-way switching valve 4 only needs to be on the primary side of the fire-extinguishing hose 5 in order to prevent water from flowing through the fire-extinguishing hose 5 during the discharge check. Become. However, preferably, the three-way switching valve 4 is located on the primary side of the fire-extinguishing hose 5 and on the secondary side of the fire hydrant valve 3.
Should be provided. Because the secondary side of the hydrant valve 3 is not filled with high-pressure pressurized water of primary pressure, the three-way switching valve 4
This is because there is an advantage that the function and performance of the fire hydrant valve 3 can be checked at the time of emission check. More preferably, the primary side of the fire-extinguishing hose 5 and the secondary side of the pressure regulating valve 2 are preferable. Because, when the three-way switching valve 4 is provided on the primary side of the pressure regulating valve 2, it is necessary to provide a means having the same pressure reducing function as the pressure regulating valve 2 in the discharge inspection device 7. This is because, for example, there is no need to provide a means having such a pressure reducing function, and the function and performance of the pressure regulating valve 2 can be checked at the time of discharge check. In view of the above, in the present embodiment, the three-way switching valve 4 is provided on the primary side of the fire extinguishing hose 5 and on the secondary side of the fire hydrant valve 3 and the pressure regulating valve 2.

Next, a method of inspecting the fire hydrant device for emission, which is performed using the fire hydrant device 1 and the emission inspection device 7 configured as described above, will be described.

The emission inspection method using the emission inspection device of the present invention is carried out by the following steps. Step 1: At the outlet 4b of the three-way switching valve 4 of the fire hydrant device 1, a discharge inspection device 7 is connected to its connection base 7a as shown by an arrow A1 in FIG.
Connect with Step 2: A nozzle appropriately selected according to the type of the nozzle 6 of the fire hydrant device 1 to be inspected is connected to the connection end portion 7b of the discharge inspection device 7.
Alternatively, the nozzle 6 of the fire hydrant device 1 is detached from the fire hose 5 and connected to the nozzle connection end 7b of the emission inspection device 7 as indicated by an arrow A2 in FIG. Step 3: The three-way switching valve 4 is operated, the outlet 4a is in an open state and the outlet 4b is in a closed state, the outlet 4a is closed and the outlet 4b is opened, and the secondary side flow of the three-way switching valve is set. The path is switched from the flow path on the fire hose 5 side to the flow path on the inspection device 7 side. It should be noted that the steps 1 to 3 may be appropriately replaced before and after. Step 4: The fire hydrant valve 3 of the fire hydrant device 1 is opened. Step 5: The fire extinguishing agent is discharged from the discharge inspection device 7, and the discharge pressure is measured by the pressure gauge 8 to check whether the discharge pressure of the fire hydrant device 1 satisfies a predetermined value.

By performing the above-described inspection, the primary-side configuration of the fire hydrant device 1 including the three-way switching valve 4, ie, the three-way switching valve 4, the fire hydrant valve 3, the pressure regulating valve 2, and the piping P connecting these components However, when the nozzle 6 is relocated to the discharge inspection device 7 for inspection, it is possible to check whether the nozzle 6 has a predetermined function and performance by measuring the discharge pressure.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A fire hydrant device 100, which further embodies the fire hydrant device 1 as described above, will be described with reference to FIG. The components having the same reference numerals as those of the fire hydrant device 1 have the same names and the same functions.

In FIG. 2, a fire hydrant device 100 is a so-called inner wrap type fire hydrant device which is installed in, for example, a tunnel or the like and has a fire hose 5 housed inside. The fire hydrant device 100 includes, in a housing 10, a hose bucket 12, which forms a hose accommodating portion 11 for accommodating the fire extinguishing hose 5 in an inner winding, a three-way switching valve 4, a pressure regulating valve 2, a fire hydrant valve 3, and the like. I have.

The hose bucket 12 has two rods 15, 15 extending from the upper surface of the inner wall of the housing 10 to the lower surface of the inner wall, and is bent in a substantially L shape from the rods 15, 15 to the rear surface of the inner wall of the housing 10. The fire extinguisher hose 5 is drawn out from the central opening 12a formed between the two bar-shaped members 15 and housed. A corner opening is provided between the band plates 16, 16 of the hose bucket 12 and the inner wall upper surface and the inner wall lower surface of the housing 10. Accordingly, when the fire extinguishing hose 5 is accommodated in the hose bucket 12, that is, in the hose accommodating portion 11 from the central opening 12 a of the hose bucket 12, the fire extinguishing hose 5 is moved into the hose accommodating portion 11 from the corner opening. It is possible to visually check whether or not the fire-extinguishing hose 5 has been wound, and the fire-extinguishing hose 5 can be pushed or trimmed by putting a hand into the hose accommodating portion 11 from the corner opening. Therefore, the fire extinguishing hose 5 can be easily wound and housed in the hose accommodating portion 11.

The housing 10 has a front opening 10a at the front.
And an upper door 13 provided on the upper edge and a lower edge of the opening 10a via hinges, respectively, and a front tilting door 14 as a lower door, which allows the front opening 10a to be opened and closed. I have. That is, the housing 10 has a door divided into an upper door 13 and a forward tilting door 14 as a lower door on the front surface thereof. Thus, the size of the front door of the housing that projects outward when the door is opened can be made shorter than that of a fire hydrant device including a single door.

The forward tilting door 14 is provided such that when the door is opened, the central opening 12a of the hose accommodating portion 11 is exposed to the outside so that the fire extinguishing hose 5 can be pulled out from the opening 12a. . As a result, the fire extinguishing hose 5 can be pulled out of the hose accommodating portion 11 by opening only the front tilting door 14.

The upper door 13 is provided so as to cover the open / close operation portion of the three-way switching valve 4 housed in the housing 10 when the door is closed. By closing the upper door 13 in the event of a fire, the operator can erroneously cause the three-way switching valve 4 to close.
It is possible to prevent the opening and closing operation section from being operated.

A fire hose 5 for fire extinguishing is provided on the inner side of the front tilting door 14.
Guide 17, the opening / closing lever 19 of the fire hydrant valve 3, the nozzle holder 60 h of the adjustable angle nozzle 60
Etc. are provided. For example, a mechanism portion of the opening / closing lever 19 is built in the front tilting door 14, and a back plate 14 a covering them is provided on the inner side of the front tilting door 14, and the hose guide 17 and the opening / closing The lever 19 is provided on the back plate 14a. Further, the recess 14 is provided at the position corresponding to the position of the hose accommodating portion 11 in the forward tilting door 14.
b.

The hose guide 17 includes two vertical rods vertically erected on the inner surface of the forwardly tilting door 14 and a frontwardly tilting door that bridges the upper ends of the two rods. And a horizontal rod-like body provided so as to extend in the horizontal direction. That is, the hose guide 17 has a substantially U shape as a whole. An insertion portion through which the fire extinguishing hose 5 is inserted is formed inside the hose guide 17, and a guide surface that contacts the fire extinguishing hose 5 when the fire extinguishing hose 5 is pulled out is formed on the inner surface of the hose guide 17. I have. Accordingly, when the operator pulls out the fire extinguishing hose 5, the fire extinguishing hose 5 is drawn out while being in contact with the guide surface of the hose guide 17. For this reason, the movement of the fire extinguishing hose 5 is appropriately restricted by frictional resistance with the guide surface. Therefore, the hose guide 17 can prevent the fire extinguishing hose 5 from coming out to an extent not intended by the operator.

The adjustable angle nozzle 60 is provided with a discharge port 60.
a, and a discharge port 60a
The connection between the fire extinguishing hose 5 and the fire extinguishing hose 5 is connected via a V-shaped connection portion 60b, and the connection between the discharge port portion 60a and the V-shaped connection portion 60b is rotatable. This allows
When the adjustable angle nozzle 60 is accommodated in the nozzle holder 60h in a direction parallel to the upper side of the forwardly tilting door 14, the connection side of the U-shaped connection part 60b with the fire extinguishing hose 5 is opened at the center of the hose accommodation part 11. By directing toward the part 12a, the fire extinguishing hose 5 also moves toward the central opening 12a of the hose accommodating part 11. For this reason, the slack of the fire extinguishing hose 5 between the hose accommodating portion 11 and the nozzle holder 60h can be reduced, and even if there is a sagging, the sagging portion is removed from the central opening portion 12a through the hose accommodating portion 1.
1 can be accommodated in the extra space. Therefore,
Problems caused by slack of the fire extinguishing hose 5 between the hose accommodating portion 11 and the nozzle holder 60h (for example, when the fire extinguishing hose 5 is sandwiched between the hose accommodating portion 11 and the forward tilting door 14, the forward tilting door 14 can not be closed, or the device is enlarged by providing a gap between the hose accommodating portion 11 and the forward tilting door 14 for the purpose of preventing the closure of the device.

In the present embodiment, the problem caused by the slack of the fire extinguishing hose 5 between the hose accommodating portion 11 and the nozzle holder 60h can be further eliminated by the presence of the concave portion 14b. That is, the inconvenience can be further eliminated by accommodating the slack portion of the fire extinguishing hose 5 between the hose accommodating portion 11 and the nozzle holder 60h in the concave portion 14b.

Reference numeral 18 denotes an operation nameplate for displaying operational precautions and the like of the fire hydrant device. The operation nameplate is provided so as to be raised and lowered in conjunction with opening and closing of the front tilting door 14 by means of a raising and lowering means (not shown). That is, the operation nameplate 18 is provided so as to stand up from the inner surface side of the forward leaning door 14 when the forward leaning door 14 is opened, and to lie down on the inner surface side of the forward leaning door 14 when the forward leaning door 14 is closed. As a result, when the front tilting door 14 is opened, the operation nameplate 18 can be raised from the inner surface of the front tilting door 14 so that the operator can easily confirm it. When the front tilting door 14 is closed, the operation nameplate 18 can be seen. Is turned down with respect to the inner surface of the front tilting door 14, so that it is not necessary to secure a space in the housing 10 where the operation nameplate 18 stands.

[0028]

Since the present invention is constructed as described above, it is possible to carry out a discharge check without passing water through the fire hose when discharging the fire hydrant device. Therefore, after the discharge inspection work, it is not necessary to pull out all the fire extinguishing hoses to discharge the residual water in the fire extinguishing hoses, and it is not necessary to rewind the fire extinguishing hoses and store them again. Therefore, it is possible to obtain a discharge inspection device for a fire hydrant device, which can facilitate the recovery work after the discharge inspection and shorten the operation time required for the recovery operation.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an outline of a discharge inspection device used for a fire hydrant device of the present invention.

FIG. 2 is a view showing an embodiment of a fire hydrant device using the emission inspection device of the present invention, and is a perspective view in a state where a forward tilting door (lower door) is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fire hydrant device 2 Pressure regulating valve 3 Fire hydrant valve 4 Three-way switching valve 5 Fire extinguishing hose 6 Nozzle 7 Emission inspection device

Claims (4)

[Claims] 1. A discharge inspection device for use in a fire hydrant device provided with a fire hydrant valve and a fire extinguisher hose provided on a secondary side of the fire hydrant valve and having a nozzle at a tip end thereof, the discharge inspection device comprising: A tubular body, a connection base, and a nozzle connection end to which a fire-extinguishing nozzle can be connected, and a pressure loss equivalent to a pressure loss generated in a fire-extinguishing agent flowing through the fire-extinguishing hose-side flow path is supplied to the discharge inspection device side flow. A discharge inspection device used for a fire hydrant device, comprising a pressure adjusting means for causing a fire extinguishing agent flowing in a road to be generated. 2. A discharge inspection device used for a fire hydrant device provided with a fire hydrant valve and a fire-extinguishing hose provided on a secondary side of the fire hydrant valve and having a nozzle at a tip end thereof, wherein the discharge inspection device comprises: The three-way switching valve is provided on the secondary side of the three-way switching valve provided on the primary side of the fire-extinguishing hose of the fire hydrant device. The discharge inspection of the fire hydrant device is performed by switching from the hose side flow passage to the discharge inspection device side flow passage, and the discharge inspection device is further connected to the tubular body and the three-way switching valve. A fire extinguishing system that includes a connection base and a nozzle connection end to which a fire extinguishing nozzle can be connected, and that causes a pressure loss equivalent to a pressure loss generated in a fire extinguishing agent flowing through the fire extinguishing hose flow passage through the discharge inspection device flow passage. Equipped with pressure adjusting means Emission inspection apparatus using it are the fire hydrant apparatus according to claim. 3. The fire check device according to claim 1, wherein said pressure adjusting means is an orifice. 4. The fire extinguisher device discharge check device according to claim 1, further comprising a pressure gauge for measuring the discharge pressure of the fire extinguishing agent.