JP2001327618A - Method for cleaning spray hose in fire extinguishing appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for cleaning a spray hose in a fire extinguishing appliance, allowing cleaning while discharging a residual powder fire extinguisher from a spray passage and ensuring spray of a powder fire extinguisher in reuse for executing fire extinguishing work. SOLUTION: When one of the plurality of powder fire extinguishing appliances A, A,... installed on a fire preventive object 25 finishes fire extinguishing work, a cleaning gas cylinder kit 19 stored at a place 25A apart from the power fire extinguishing appliance A, such as a storeroom or a basement is carried near the powder fire installation A after finishing fire extinguishing work and a cleaning gas cylinder 13 in the gas cylinder kit 19 is connected to the spray passage 16 for the powder fire extinguishing appliance A for supplying a cleaning gas from the gas cylinder 13 to the spray passage 16 to release and remove a residual powder from the spray passage 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning a radiation hose of a fire extinguishing system, and more particularly, to a method of cleaning a radiation hose of a mobile powder extinguishing system.

[0002]

2. Description of the Related Art Conventionally, a mobile powder fire extinguishing system A shown in FIG. 13 is known. The fire extinguishing equipment A includes a powder storage tank 2 that stores a powder fire extinguishing agent and is housed in a storage box 1, a high-pressure carbon dioxide gas cylinder 3 integrally mounted outside the powder storage tank 2, 2 has a siphon-type discharge pipe 4 for communicating the inside and the outside of the tank 2, and a radiation path 16 connected to the discharge pipe 4 via a discharge valve 5 outside the powder storage tank 2. A hose 6 and a nozzle opening / closing valve 7 provided at the tip of the radiation hose 6
And a radiation nozzle 8 provided on the downstream side of the nozzle opening / closing valve 7, and the radiation hose 6 is held in a wound state inside the storage box 1 via a hose fitting 9 or the like. The outlet of the high-pressure carbon dioxide gas cylinder 3 communicates with the inside of the powder storage tank 2 via the gas introduction pipe 10.

[0003] In the mobile powder fire extinguishing facility A having such a structure, when a fire occurs, first, a high-pressure carbon dioxide gas cylinder 3 is fired.
The valve handle 3A provided at the upper end of the tank is opened, and high-pressure carbon dioxide gas is supplied to the inside of the powder storage tank 2 and pressurized. Next, the discharge valve 5 is opened, the radiation hose 6 is detached from the hose hook 9, the radiation hose 6 is stretched while holding the radiation nozzle 8, and the nozzle opening / closing valve 7 is opened to open the powder storage tank. The powder extinguishing agent in the powder storage tank 2 is radiated from the radiation nozzle 8 at the tip of the radiation hose 6 to extinguish the fire by the pressurizing and pushing action of the high-pressure carbon dioxide gas supplied into the inside of the radiation hose 6.

After the fire extinguishing operation is completed, the nozzle on-off valve 7 at hand is closed, the discharge valve 5 is closed, and the valve handle 3A of the high-pressure carbon dioxide gas cylinder 3 is closed. Next, the radiation hose 6 is held in a wound state inside the storage box 1 via a hose hook 9 or the like. The replacement of the high-pressure carbon dioxide gas cylinder 3 and the refilling of the powder storage tank 2 with the powder fire extinguishing agent are performed by a maintenance worker.

[0005]

However, no problem arises when the entire amount of the powder fire extinguishing agent in the powder storage tank 2 is emitted by the execution of the fire extinguishing operation. However, if the fire extinguishing operation is completed in a state where the powder fire extinguishing agent still remains in the powder storage tank 2, the powder extinguishing agent remains in the radiation hose 6 and if the fire extinguishing agent is left as it is, the radiation path 16 The radiation hose 6 may be clogged. In particular, when the radiation hose 6 is held in a wound state inside the storage box 1 after the end of the fire extinguishing operation, the residual powder fire extinguishing agent in the radiation hose 6 becomes curved as shown in FIG. The clogging 14 which is solidified in a part is generated. If such clogging 14 is left as it is, the powder fire extinguishing agent does not emit when the mobile powder fire extinguishing equipment A is reused,
The next fire extinguishing work is hindered. For this reason, cleaning for discharging the residual powder extinguishing agent in the radiation path 16 is required before reuse of the mobile powder extinguishing equipment. However, the conventional mobile powder fire extinguishing equipment A does not have a function of cleaning the radiation path 16.

[0006] Therefore, the present invention enables the cleaning of the fire extinguishing equipment that can perform the fire extinguishing operation by enabling the cleaning to discharge the residual powder fire extinguishing agent in the radiation path and reliably emitting the powder extinguishing agent when reused. An object of the present invention is to provide a hose cleaning method.

[0007]

According to a first aspect of the present invention, there is provided a method for cleaning a radiant hose of a fire extinguishing system, comprising the steps of: A gas cylinder capable of supplying a high-pressure gas for pressurizing and pushing into the inside of the powder storage tank, a discharge pipe communicating between the inside and the outside of the powder storage tank, and the discharge pipe through a discharge valve outside the powder storage tank. And a radiation path connected to the powder cylinder, wherein the pressurizing and pushing action of the high pressure gas supplied from the gas cylinder to the inside of the powder storage tank causes the powder fire extinguishing agent to radiate the powder from the radiation path. A gas cylinder kit for cleaning is stored in a location away from the powder fire extinguishing equipment, and the gas cylinder kit for cleaning is The fire extinguishing agent is radiated and conveyed to the vicinity of the powder fire extinguishing system where the fire extinguishing operation has been completed, connected to the radiation path, and a cleaning gas cylinder of the cleaning gas cylinder kit is supplied with a cleaning gas to the radiation path to emit radiation. The method is characterized by discharging and removing the residual powder in the channel.

According to a second aspect of the present invention, in the method for cleaning a radiation hose of a fire extinguishing system, a cleaning gas cylinder kit is housed in a carrying case, and the fire extinguishing operation is completed from a storage place remote from the powder fire extinguishing system. It is transported to near powder fire extinguishing equipment.

Further, according to a third aspect of the present invention, in the method for cleaning a radiation hose of a fire extinguishing system, a cleaning gas cylinder kit is mounted on a transport trolley, and the fire extinguishing operation is completed from a storage location remote from the powder fire extinguishing system. It is transported to near powder fire extinguishing equipment.

According to the first aspect of the present invention, the cleaning gas cylinder kit stored in a location remote from the powder fire extinguishing equipment is provided with a powder extinguishing agent that is radiated from the radiation path to complete the fire extinguishing operation. The cleaning gas cylinder kit supplies the cleaning gas from the cleaning gas cylinder of the cleaning gas cylinder kit to the radiation path, thereby easily removing and removing the residual powder in the radiation path. In addition, the cleaning gas cylinder kit, in a plurality of powder fire extinguishing equipment installed in a fire prevention target such as a parking lot or a warehouse, the fire extinguishing agent is radiated from the radiation path and the fire extinguishing work is completed for 1 to 3 units. It is necessary only for powder fire extinguishing equipment and is not necessary for other powder fire extinguishing equipment.Therefore, compared to the number of powder fire extinguishing equipment installed on the fire prevention target, the number of storage required for cleaning gas cylinder kits is reduced. It can be significantly reduced.

According to the second aspect of the present invention, the cleaning gas cylinder kit is easily transported from the storage location remote from the powder fire extinguishing equipment to the powder fire extinguishing equipment whose fire extinguishing operation has been completed, with the cleaning gas cylinder kit stored in the transport case. can do.

According to the third aspect of the present invention, the cleaning gas cylinder kit is further mounted on the transport trolley from the storage location remote from the powder fire extinguishing equipment to the powder fire extinguishing equipment whose fire extinguishing operation has been completed. , Can be easily transported.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing an example of a discharge valve, and FIG. 3 is a longitudinal sectional view showing an example of a nozzle opening / closing valve. In addition,
Storage box 1, powder storage tank 2, high-pressure carbon dioxide gas cylinder 3,
Siphon-type discharge pipe 4, radiation hose 6, radiation nozzle 8,
The structure and operation of the hose hook 9, the gas introduction pipe 10, the radiation path 16, and the like are the same as those of the conventional example shown in FIG.

1, 2 and 3, the discharge valve 5
A first connection port 11 to which a cleaning gas cylinder in a cleaning kit described later can be connected is provided on the downstream side of the first connection port. The first connection port 11 is always closed by a plug 12. On the upstream side of the nozzle opening / closing valve 7, a second connection port 17 to which a cleaning gas cylinder in a cleaning kit described later can be connected is provided, and the second connection port 17 is always closed by a plug 18. .

The release valve 5 is a manually opened / closed ball valve and includes a valve box 5A, a valve body 5B, a valve rod 5C, and a handle 5D. The opening and closing operation of the handle 5D is performed through the valve rod 5C inside the valve box 5A. The power is transmitted to the valve element 5B housed in the valve chamber 5E, and the valve element 5B is switched to the illustrated valve-open state or the valve-closed state rotated from the valve-open state by 90 degrees around the axis of the valve rod 5C. Hold. The valve chamber 5E communicates with the upstream passage 5F and the downstream passage 5G, respectively.
The outlet of the discharge pipe 4 is connected to F, the inlet of the radiation hose 6 is connected to the downstream passage 5G, and a first connection port 11 is provided in communication with the downstream passage 5G.

The nozzle opening / closing valve 7 is a manually opened / closed ball valve and includes a valve box 7A, a valve body 7B, a valve rod 7C, and a handle 7D. The opening / closing operation of the handle 7D is performed through the valve rod 7C inside the valve box 7A. The valve body 7B is transmitted to the valve body 7B accommodated in the valve chamber 7E, and the valve body 7B is brought into the illustrated valve-open state or from this valve-open state to the valve-closed state rotated by 90 degrees around the axis of the valve rod 7C. Switch and hold. The valve chamber 7E communicates with the upstream passage 7F and the downstream passage 7G, respectively. The outlet of the radiation hose 6 is connected to the upstream passage 7F, and the entrance of the radiation nozzle 8 is connected to the downstream passage 7G. In addition, a second connection port 17 is provided in communication with the upstream passage 7F.

In FIG. 4, reference numeral 19 denotes a cleaning kit. This cleaning kit 19 includes a cleaning gas cylinder (cleaning nitrogen gas cylinder) 13 and
A transfer case 24 shown in FIG. 5 is provided with a regulator 20 for pressure adjustment, a pressure-resistant hose 21 and a tool 22 for attachment and detachment, which is detachably fitted and held in a fixing member 23 made of a molded foamed resin. And a plurality of vehicles installed in the fire protection target 25, such as a storage room provided at one corner of the fire protection target 25 such as a parking lot or a warehouse shown in FIG. Are stored in a location 25A away from the powder fire extinguishing facilities A, A,.

In the above configuration, when any one of the plurality of powder fire extinguishing equipments A, A,. The cleaning gas cylinder kit 19 stored in a place 25A remote from the powder extinguishing equipment A is transported to the vicinity of the powder extinguishing equipment A that has finished the fire extinguishing operation while being stored in the transport case 24.

Thereafter, in cleaning for releasing the powder fire extinguishing agent remaining in the radiation hose 6 in the radiation path 16, the maintenance worker removes the plug 12 of FIG. 2 and opens the first connection port 11. As shown in FIG. 7, a cleaning nitrogen gas cylinder 13 is connected to the opened first connection port 11 through a pressure-resistant hose 21.
The cleaning gas is supplied from the cleaning gas cylinder 13 to the inside of the radiation hose 6, and the nozzle opening / closing valve 7 is opened. Thus, the residual powder inside the radiation hose 6 can be released and removed from the radiation nozzle 8. After the residual powder is released and removed, the connection between the first connection port 11 and the cleaning gas cylinder 13 is disconnected, and the first connection port 11 is closed by the plug 12.

On the other hand, when cleaning is performed to release and remove the residual powder fire extinguishing agent in the radiation hose 6 pressed against the nozzle on-off valve 7 in a state prior to reuse in which the discharge valve 5 is closed after the fire extinguishing operation is completed. The maintenance worker removes the plug 12 of FIG. 2 to open the first connection port 11, and removes the plug 18 of FIG. 3, opens the second connection port 17, and closes the nozzle on-off valve 7. And
As shown in FIG. 8, a cleaning gas cylinder 13 is connected to the opened second connection port 17 via a pressure-resistant hose 21, and the valve is opened to allow the cleaning gas cylinder 13 to enter the inside of the radiation hose 6 from the cleaning gas cylinder 13. Supply gas. As a result, even if the residual powder inside the radiation hose 6 is pressed against the nozzle on-off valve 7 side and solidifies firmly to cause clogging, the residual powder is loosened and backwashed and discharged from the first connection port 11. Can be removed. After the backwashing and removal of the residual powder, the connection between the second connection port 17 and the cleaning gas cylinder 13 is disconnected, and the plug 18 closes the second connection port 17 and the plug 12 closes the first connection port 11.

On the other hand, when cleaning is performed to release and remove the residual powder fire extinguishing agent in the radiation hose 6 pressed against the nozzle on-off valve 7 in a state prior to reuse in which the discharge valve 5 is closed after the fire extinguishing operation is completed. After the maintenance worker removes the plug 12 of FIG. 2 to open the first connection port 11, and removes the plug 18 of FIG. 3, opens the second connection port 17, and closes the nozzle on-off valve 7. , FIG. 9
As shown in (2), the cleaning gas cylinder 13 is connected to the opened first connection port 11 and second connection port 16 via the pressure-resistant hose 21 and the switching valve 27. That is, the cleaning gas cylinder 13 is connected to the primary port P1 of the switching valve 27, and the secondary port P3 of the switching valve 27 is connected to the first connection port 11, and the secondary port P4 is connected to the second connection port 17, respectively. After that, the primary port P1 and the secondary port P
4 and the secondary side port P3 and the exhaust port P2 are switched and held so as to communicate with each other. Thereafter, the valve of the cleaning gas cylinder 13 is opened. As a result, the cleaning gas in the gas cylinder 13 is supplied from the second connection port 17 to the inside of the radiation hose 6, and the residual powder in the radiation hose 6 is pressed against the nozzle opening / closing valve 7 side to be solidified and clogged. Is generated, the residual powder can be loosened and backwashed and removed from the backwash path from the first connection port 11 → the secondary port P3 of the switching valve 27 → the exhaust port P2.

As shown in FIG. 10, the switching valve 27 is switched and held so that the primary port P1 and the secondary port P3 communicate with each other and the secondary port P4 communicates with the exhaust port P2. The cleaning gas in the gas cylinder 13 is supplied from the first connection port 11 to the inside of the radiation hose 6, and the residual powder inside the radiation hose 6 is removed from the second connection port 17 →
It can also be released and removed from the path from the secondary port P4 of the switching valve 27 to the exhaust port P2.

As described above, the cleaning gas cylinder kit 19 stored in the place 25A remote from the powder fire extinguishing equipment A is moved to the vicinity of the powder fire extinguishing equipment A where the fire extinguishing operation is completed by radiating the powder fire extinguishing agent from the radiation path 16. Conveyed and connected to radiation path 16, cleaning gas cylinder kit 1
By supplying the cleaning gas from the cleaning gas cylinder 13 to the radiation path 16, the residual powder in the radiation path 16 can be easily released and removed. In particular, the cleaning gas cylinder kit 19 is
Therefore, the transfer to the powder fire extinguishing facility A from the place 25A remote from the powder fire extinguishing equipment A and the transfer to the place 25A remote from the powder fire extinguishing equipment A after the cleaning is completed can be easily performed. .

Further, the cleaning gas cylinder kit 19 emits a powder fire extinguishing agent from the radiation path 16 in a plurality of powder fire extinguishing facilities A, A... It is necessary only for one to three powder fire extinguishing facilities A after the fire extinguishing work has been completed, and is not necessary for the other powder fire extinguishing facilities A.
Can be remarkably reduced as compared with the number of powder fire extinguishing facilities A, A...

In the above-described embodiment, the method is described in which the cleaning gas cylinder kit 19 is transported while housed in the transport case 24. However, as shown in FIGS. By adopting the method of loading and transporting on the hand-held transport cart 26, the transport to the powder fire extinguishing facility A from a place 25A remote from the powder fire extinguishing equipment A and the powder extinguishing equipment A performed after the cleaning is completed To the place 25A
Than the method of carrying in the carrying case 24,
It can be performed even more easily. In this cleaning gas cylinder kit 19, the same parts as those of the cleaning gas cylinder kit 19 in FIG.

[0026]

According to the first aspect of the present invention, the cleaning gas cylinder kit stored in a place away from the powder fire extinguishing equipment is provided with a powder fire extinguishing agent that is radiated from the radiation path to complete the fire extinguishing operation. By transporting to the fire extinguishing facility and connecting to the radiation path and supplying the cleaning gas from the cleaning gas cylinder of the cleaning gas cylinder kit to the radiation path, the residual powder in the radiation path can be easily released and removed. In addition, the cleaning gas cylinder kit, in a plurality of powder fire extinguishing equipment installed in a fire prevention target such as a parking lot or a warehouse, the fire extinguishing agent is radiated from the radiation path and the fire extinguishing work is completed for 1 to 3 units. It is necessary only for powder fire extinguishing equipment and is not necessary for other powder fire extinguishing equipment.Therefore, compared to the number of powder fire extinguishing equipment installed on the fire prevention target, the number of storage required for cleaning gas cylinder kits is reduced. It can be significantly reduced.

According to the second aspect of the present invention, the cleaning gas cylinder kit is easily accommodated in the carrying case from the storage location remote from the powder fire extinguishing equipment to the powder fire extinguishing equipment where the fire extinguishing operation has been completed. Can be transported.

Further, according to the third aspect of the present invention,
From the storage place remote from the powder fire extinguishing equipment to the powder fire extinguishing equipment where the fire extinguishing operation has been completed, the cleaning gas cylinder kit can be further easily transported with the cleaning gas cylinder kit mounted on the transport cart.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing an example of a discharge valve.

FIG. 3 is a longitudinal sectional view showing an example of a nozzle opening valve.

FIG. 4 is a front view showing a stored state of the cleaning gas cylinder kit.

FIG. 5 is a perspective view showing an example of a transfer case of the cleaning gas cylinder kit.

FIG. 6 is a plan view illustrating the relationship between the fire prevention target and the storage locations of the powder fire extinguishing equipment and the cleaning gas cylinder kit.

FIG. 7 is an explanatory diagram showing an example of a state in which residual powder is released and removed.

FIG. 8 is an explanatory view showing an example of a backwash release removal state of residual powder.

FIG. 9 is an explanatory view showing an example in which the removal of residual powder and the removal of backwash release can be used together.

FIG. 10 is an explanatory diagram in which the switching valve of FIG. 9 is switched to a state in which residual powder is released and removed.

FIG. 11 is a front view showing a state in which a cleaning gas cylinder kit is mounted on a cart.

FIG. 12 is a side view of FIG. 11;

FIG. 13 is an overall configuration diagram of a conventional example.

FIG. 14 is an explanatory diagram showing, in an enlarged manner, clogging that occurs in a lower curved portion of the radiation hose.

[Explanation of symbols]

2 Powder storage tank 3 High-pressure carbon dioxide gas cylinder or nitrogen gas cylinder (gas cylinder) 4 Release pipe 5 Release valve 6 Radiation hose 13 Cleaning gas cylinder 16 Radiation path 19 Cleaning gas cylinder kit 24 Transport case 25A Location away from powder fire extinguishing equipment 26 Transport Dolly A powder extinguishing equipment

Claims (3)

[Claims] 1. A powder storage tank storing and fixing a powder fire extinguishing agent, a gas cylinder capable of supplying a high-pressure gas for pressurizing and extruding into the powder storage tank, and communicating the inside and the outside of the powder storage tank. A discharge pipe, and a radiation path connected to the discharge pipe via a discharge valve outside the powder storage tank, and by a pressurizing and pushing action of a high-pressure gas supplied from the gas cylinder to the inside of the powder storage tank, In a powder fire extinguishing system configured to emit a powder fire extinguishing agent from the radiation path, a cleaning gas cylinder kit is stored at a location away from the powder fire extinguishing equipment, and the cleaning gas cylinder kit is placed in the powder path from the radiation path. The fire extinguishing agent is radiated and conveyed to the vicinity of the powder fire extinguishing facility where the fire extinguishing work is completed and connected to the radiation path
A method for cleaning a radiation hose of a fire extinguishing system, comprising: supplying a cleaning gas from a cleaning gas cylinder of the cleaning gas cylinder kit to a radiation path to release and remove residual powder in the radiation path. 2. The cleaning gas cylinder kit is housed in a carrying case, and is conveyed from a storage location remote from the powder fire extinguishing equipment to a place near the powder fire extinguishing equipment where the fire extinguishing operation has been completed. Cleaning method of radiation hose of fire extinguishing equipment. 3. The transporting trolley having a cleaning gas cylinder kit mounted thereon and transporting it from a storage location remote from the powder fire extinguishing equipment to a place near the powder extinguishing equipment where the fire extinguishing operation has been completed. Cleaning method of radiation hose of fire extinguishing equipment.