Firefighting equipment

Abstract

To provide fire extinguishing equipment capable of supplementing fire extinguishing ability of fire hydrant equipment that varies depending on a skill of an operator.SOLUTION: Fire extinguishing equipment includes: a first pipe; a pump for supplying fire extinguishing water to the first pipe; a hose to be connected to the first pipe; a second pipe branched from the first pipe; a fire extinguishing head attached to the second pipe; and a three-way valve switching a supply destination of the fire extinguishing water from the hose to the fire extinguishing head under prescribed conditions. The fire extinguishing equipment is characterized by discharging fire extinguishing water from the hose in response to opening operation of the hose, and discharging the fire extinguishing water from the fire extinguishing head under the prescribed conditions.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fire extinguishing system. [Background technology]

[0002] Fire hydrant systems are installed to protect people and equipment from fire. In some places, the Fire Service Act requires the installation of manually operated systems. Various methods have been proposed to improve the convenience of fire hydrant facilities. For example, Patent Document 1 (JP 2021-132744 A) discloses a fire hydrant that can improve the ease of removing a nozzle fixed inside the hydrant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2021-132744 Summary of the Invention [Problem to be solved by the invention]

[0004] However, fire hydrant equipment is operated by a person, and its fire-extinguishing ability varies depending on the skill of the person operating it.

[0005] Therefore, an object of the present invention is to provide a fire extinguishing facility that can compensate for the fire extinguishing capability of a fire hydrant facility, which varies depending on the skill of the operator. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides: A first pipe; a pump for supplying fire extinguishing water to the first pipe; a hose connected to the first pipe; a second pipe branching from the first pipe; a fire extinguishing head attached to the second pipe; a three-way valve that switches the supply destination of the fire extinguishing water from the hose to the fire extinguishing head under predetermined conditions; The fire extinguishing water is discharged from the hose in response to an opening operation of the hose, Discharging the extinguishing water from the fire extinguishing head under the predetermined conditions; To provide a fire extinguishing system characterized by the above.

[0007] In the fire extinguishing equipment of the present invention, it is preferable that the specified condition is the detection of a flame equal to or greater than a predetermined reference value, the detection of smoke or heat generated by a fire, the closing operation of the hose, or the passage of a specified time from the start of water discharge from the hose.

[0008] It is preferable that the fire extinguishing equipment of the present invention further comprises a third pipe branching off from the first pipe, and a water supply outlet connected to the third pipe and receiving a supply of fire extinguishing water from a second water source. [Effects of the Invention]

[0009] The fire extinguishing system of the present invention not only sprays water from a hose by a person, but also sprays water from a fire extinguishing head, thereby making it possible to supplement the fire extinguishing ability of a fire hydrant system, which varies depending on the skill of the operator. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic diagram of a fire extinguishing system 1 according to a first embodiment of the present invention. [Figure 2] 1 is a schematic diagram of a fire extinguishing system 10 according to a modified example of the first embodiment. [Figure 3] 10 is an explanatory diagram of the water discharge range of a fire extinguishing head 7 according to a modified example. FIG. [Figure 4] 1 is a schematic diagram of a fire extinguishing system 21 according to a second embodiment of the present invention. [Figure 5] 10 is a diagram schematically illustrating a state in which a user U performs firefighting activities with a hose 25 in the second embodiment. FIG. [Figure 6] 10 is a diagram showing a schematic view of water being sprayed from a fire extinguishing head 27 to a fire source F in the second embodiment. FIG. [Figure 7] 10 is a diagram schematically illustrating a state in which extinguishing water W is supplied from a water source 32 through a water supply port 28 and sprayed from a fire extinguishing head 27 to a source of fire F in the second embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Representative embodiments of the fire extinguishing system of the present invention will be described in detail below with reference to the drawings. Note that the present invention is not limited to these drawings. Furthermore, since the drawings are intended to conceptually explain the present invention, dimensions, ratios, or numbers may be exaggerated or simplified as necessary to facilitate understanding.

[0012] 1. Embodiment 1 A fire extinguishing system 1 according to a first embodiment will be described with reference to FIGS. 1 to 3. FIG.

[0013] The fire extinguishing system 1 is preferably installed in a place where a fire hydrant or a water discharge type system is installed, such as, but not limited to, a factory, a warehouse, or a garbage disposal plant. The fire extinguishing system 1 may be installed along a wall surface, or may be partially embedded in the wall surface, for example. As shown in FIG. 1, the fire extinguishing equipment 1 includes pipes 2 and 3, a pump P, a hose 4, stop valves 5 and 6, and a fire extinguishing head 7.

[0014] The piping 2 (first piping) connects the water source 8 and the hose 4, and supplies the fire-extinguishing water 9 in the water source 8 to the hose 4. Here, examples of the water source 8 include a water supply, a well, a river, and the sea. Therefore, the fire-extinguishing water 9 is assumed to be any water, such as tap water, well water, river water, or seawater, but may also be an aqueous solution (fire-extinguishing liquid) containing a foam fire-extinguishing agent such as an aqueous film-forming foam fire-extinguishing agent. In the latter case, a storage tank and mixer for the foam fire-extinguishing agent may be connected to the piping 2. The pipe 3 (second pipe) branches off from the pipe 2 and supplies the fire extinguishing water 9 supplied from the pipe 2 to the fire extinguishing head 7. Here, it is assumed that the upstream side (primary side) of the water stop valves 5, 6 in the pipes 2, 3 is filled with fire extinguishing water 9 (closed type), but an open type may also be adopted.

[0015] Pump P draws fire extinguishing water 9 from a water source 8 such as a water tank and supplies it to pipe 2. A filter to remove debris, dust, etc. may be provided at the end of pipe 2 where it enters water source 8. Pump P starts upon receiving a signal indicating, for example, the opening of stop valve 5, the opening of hose 4, or the detection of a flame.

[0016] The hose 4 is connected to the pipe 2 and discharges the fire extinguishing water 9 from the nozzle 41. The hose 4 may be stored in a storage box (not shown) in a wound state. The hose 4 may also have an on-off valve (not shown) that can be operated by the user. Existing hoses 4 and nozzles 41 can be used.

[0017] The stop valve 5 closes the pipe 2. In other words, the stop valve 5 closes the flow path connected to the hose 4. Here, the stop valve 5 is provided downstream (secondary side) of the branch A in the pipe 2, and may be stored in a storage box (not shown). The stop valve 5 can be opened manually by a person.

[0018] The stop valve 6 is provided in the pipe 3 and closes the pipe 3. It is preferable that the stop valve 6 opens automatically when the stop valve 5 opens. For example, the stop valve 6 may open based on a detection signal indicating the opening operation of the stop valve 6 or the flow of water in the pipe 2, or based on a flame detection signal.

[0019] The fire extinguishing head 7 is attached to the piping 3. The fire extinguishing head 7 is installed, for example, vertically above a storage box (not shown) for the hose 4, etc., and covers all or part of the fire extinguishing compartment of the fire hydrant (see symbols P and Q in Figure 3).

[0020] A plurality of fire extinguishing heads 7 may be provided. In this case, by making the orientation of each head different, it is possible to cover a wider fire extinguishing compartment. Note that various types of heads can be used as the fire extinguishing head 7, including, for example, an existing water discharge head (sprinkler head), a water spray head, a foam head, etc. The fire extinguishing head 7 may also be equipped with a flame detection function. Alternatively, the detection of flame, smoke, heat, etc. may be performed by a separate sensor (not shown).

[0021] In this way, the fire extinguishing system 1 has both the function of a fire hydrant system and the function of a sprinkler system (or a foam fire extinguishing system, a water spray fire extinguishing system, etc.). That is, in this embodiment, in addition to the water spraying by a person using the hose 4, water is also sprayed by the fire extinguishing head 7. Therefore, it is possible to compensate for the fire extinguishing ability of the fire hydrant system, which varies depending on the skill of the operator.

[0022] Next, an example of the operation of the fire extinguishing system 1 will be described. When a fire is detected by someone and the water stop valve 5 is opened, the pump P starts and water begins to be discharged from the hose 4. At the same time, the indicator light flashes and the bell rings.

[0023] The water stop valve 6 automatically opens, and water starts to be discharged from the fire extinguishing head 7. Alternatively, when a fire is detected by a flame detector, the water stop valve 6 automatically opens, and water starts to be discharged from the fire extinguishing head 7.

[0024] When a person confirms that the fire is extinguished and stops the water discharge (closes the water stop valve 5), the water stop valve 6 closes and the water discharge from the fire extinguishing head 7 stops.

[0025] That is, by branching pipe 3 from pipe 2 and installing a fire extinguishing head 7 on pipe 3, when a fire occurs, the fire can be automatically contained and extinguished.

[0026] 2. Embodiment 2 A fire extinguishing system 21 according to a second embodiment will be described with reference to FIGS.

[0027] The fire extinguishing equipment 21 includes pipes 22-24, a pump P, a hose 25, a three-way valve 26, a fire extinguishing head 27, and a water supply port 28. Pipe 22 (corresponding to the first pipe) connects water source 31 and hose 25, and supplies fire extinguishing water W in water source 31 to hose 25. Pipe 23 (corresponding to the second pipe) branches off from pipe 22, and supplies fire extinguishing water W supplied from pipe 22 to fire extinguishing head 27. The pump P pumps up fire extinguishing water W from a water source 31 such as a water tank and supplies it to the piping 22. The hose 25 is connected to the pipe 22 and discharges the fire-extinguishing water W from a nozzle (see FIG. 5). The hose 25 may be provided with an on-off valve (not shown) that can be operated by the user U.

[0028] A three-way valve 26 is installed at the point where pipe 23 branches off from pipe 22. Three-way valve 26 allows either hose 25 (fire hydrant) or fire head 27 to be used, but prevents both from being used at the same time.

[0029] Specifically, the three-way valve 26 is set in advance to open the flow path on the pipe 22 side and close the flow path on the pipe 23 side. The three-way valve 26 switches the supply destination of the fire extinguishing water W from the hose 25 to the fire extinguishing head 27 under predetermined conditions. Examples of the predetermined conditions include, but are not limited to, the detection of a flame equal to or greater than a predetermined reference value, the detection of smoke or heat generated by a fire, visual recognition of a flame by the user U, detection of an operation to close the hose 25 by the user U, and the passage of a predetermined time since the user U started to discharge water from the hose 25.

[0030] The fire extinguishing head 27 is attached to the pipe 23. In this embodiment, the fire extinguishing head 27 is assumed to be a fixed type, but a movable type head may also be used.

[0031] A further pipe 24 (corresponding to a third pipe) may branch off from the pipe 22. A water supply port 28 is connected to the pipe 24, which receives a supply of fire extinguishing water W from a water source 32 such as a fire engine. Therefore, the fire extinguishing equipment 21 can receive a supply of fire extinguishing water W from the external water source 32. When the fire extinguishing system 21 is a closed type, a pipe 29 connected to a water source 33 may further branch off from the pipe 22. The water source 33 is used as a make-up water tank for filling the pipe 22 and the like with water.

[0032] Next, the operation of the fire extinguishing system 21 will be described. The fire extinguishing equipment 21 monitors the protected area by a flame detector (not shown). At this time, the three-way valve 26 is open to the hose 25 (fire hydrant) side.

[0033] When the user U discovers the occurrence of a fire and opens the on-off valve (not shown) of the hose 25, the pump P starts, and water starts to be discharged from the hose 25 to the source of the fire F (see FIG. 5).

[0034] Depending on the situation, the fire source F may not be extinguished by spraying water from the hose 25. In this case, a flame detector (not shown) detects the flame and issues a detection signal. When the detection signal reaches the three-way valve 26 directly or indirectly via a control device (not shown), the three-way valve 26 switches to open the fire extinguishing head 27 side. Alternatively, if the user U gives up on putting out the fire with the hose 25 (fire hydrant), the user U can manually or automatically switch the three-way valve 26 when the on-off valve of the hose 25 is closed, and evacuate to safety outside the building through the emergency exit G. As a result, the water discharge from the hose 25 stops, and instead the water discharge from the fire extinguishing head 7 starts (see FIG. 6). The water discharge from the fire extinguishing head 27 helps the user U to evacuate and prevents the fire from spreading.

[0035] A water supply port 28 is provided in the piping system including the pipe 22, so that the fire extinguishing equipment 21 can receive a supply of fire extinguishing water W from outside via another water source 32 such as a fire engine (see FIG. 7). This makes it possible to continue discharging water even if the water source 31 dries up.

[0036] According to this embodiment, the fire extinguishing equipment 21 also functions not only as a fire hydrant but also as a water-discharging sprinkler. That is, in addition to the user U discharging water using the hose 4, the user U can also discharge water using the fire extinguishing head 27 (see, for example, FIGS. 5 and 6).

[0037] In the fire extinguishing equipment 21, fire extinguishing activities using the hose 25 and fire extinguishing activities using the fire extinguishing head 27 are alternatives. That is, when the user U has finished fire extinguishing activities using the hose 25 or when such fire extinguishing activities are not being performed, fire extinguishing activities using the fire extinguishing head 27 are performed. This allows the user U to finish fire extinguishing activities using the hose 25 and evacuate through the emergency exit G while fire extinguishing activities using the fire extinguishing head 27 are being performed, thereby ensuring sufficient time for evacuation. In other words, people can evacuate while a large amount of water is being sprayed from the fire extinguishing head 27, without having to risk using a fire hydrant.

[0038] In addition, since a water supply port 28 is provided, even after water source 31 has dried up, water can be supplied from water source 32, such as a fire engine or a portable pump, from outside the building. This makes it possible to continue spraying water from fire extinguishing head 27.

[0039] The above describes a fire extinguishing system that is one embodiment of the present invention, but the present invention is not limited to this. Various design modifications are possible as long as the technical concept of the present invention is maintained, and all such design modifications are included in the technical scope of the present invention.

[0040] For example, as shown in FIG. 2, a swivel unit 11 that can swivel the fire extinguishing head 7 may be employed, thereby expanding the water discharge range P to, for example, a range Q (see FIG. 3). Furthermore, when a plurality of fire extinguishing heads 7 are provided, the swivel unit 11 may be provided to some of the fire extinguishing heads 7. Alternatively, by providing the swivel unit 11 to a plurality of fire extinguishing heads 7, the water discharge range P can be further expanded.

[0041] The components of the fire extinguishing equipment 1 according to the first embodiment and the components of the fire extinguishing equipment 21 according to the second embodiment can be used in appropriate combination or interchangeable unless there is a particular hindrance.

[0042] Furthermore, for example, in the above embodiment, the case of a hose being opened and closed by a person has been described, but these hose opening and closing operations may also be automatically controlled and detected by a control device including a computer. [Explanation of symbols]

[0043] 1,10,21 Fire extinguishing equipment 2,3,22,23,24,29 Piping 4,25 hose 5,6 Water stop valve 7,27 Fire extinguishing head 8,31,32,33 Water source 9.W Fire extinguishing water 26 Three-way valve 28 Water inlet

Claims

1. A first pipe; A pump for supplying fire extinguishing water to the first piping; A hose connected to the first pipe; a second pipe branched from the first pipe; A fire extinguishing head attached to the second pipe; a three-way valve that switches the supply destination of the fire extinguishing water from the hose to the fire extinguishing head under a predetermined condition; The fire extinguishing water is discharged from the hose in response to an opening operation of the hose, Switching the three-way valve to discharge the extinguishing water from the fire extinguishing head, based on the predetermined condition being the closing operation of the hose or the passage of a predetermined time from the start of water discharge from the hose; A fire extinguishing system characterized by:

2. a third pipe branched from the first pipe; a water supply port connected to the third pipe and receiving a supply of fire extinguishing water from a second water source; Further comprising: The fire extinguishing system according to claim 1 .

3. A first pipe; A pump for supplying fire extinguishing water to the first piping; A hose connected to the first pipe; a second pipe branched from the first pipe; A fire extinguishing head attached to the second pipe; A three-way valve that switches the supply destination of the fire extinguishing water from the hose to the fire extinguishing head under a predetermined condition, The fire extinguishing water is discharged from the hose in response to an opening operation of the hose, Switching the three-way valve to discharge the extinguishing water from the fire extinguishing head, based on the predetermined condition being the closing operation of the hose or the passage of a predetermined time from the start of water discharge from the hose; A fire extinguishing method comprising:

4. The fire extinguishing system, a third pipe branched from the first pipe; a water supply port connected to the third pipe and receiving a supply of fire extinguishing water from a second water source; Further comprising: The fire extinguishing method according to claim 3,

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