JP3334057B2 - Fire extinguishing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing system capable of supporting and supplying water when buildings with fire extinguishing systems are connected in series.

[0002]

2. Description of the Related Art Water is the mainstay of extinguishing most fires.
It is believed that this will not change even if scientific firefighting advances in the future. The water use facilities of fire extinguishing equipment cannot be specified when and where they occur, but they have the characteristic of temporarily consuming large amounts of water. The water source is defined as a condition for water-supply and water-supply use, for example, in that a substance or sewage or the like that may affect the human body is not mixed.

When using a closed sprinkler head,
A source water volume of a maximum of 30 multiplied by 1.6 m ³ is required. Water tanks having such a large amount of water are individually provided in each building.

[0004]

In the case where sprinkler heads actually operate at the time of a fire, it is rare that two or more heads are opened, and in most cases, the operation of one head suppresses the fire. ing. Statistical considerations indicate that the fire extinguishing system that is not used all the time is rarely needed when it is used.

However, the size of the fire that occurs cannot be specified, and even if the sprinkler head operates,
If the amount of water is small and sufficient effects cannot be obtained, there is no point in installing the equipment. Conversely, even equipment that complies with regulations such as the Fire Defense Law cannot be said to ultimately store a sufficient amount of water. Further, the amount of water that may have been used may be reduced due to being used for some reason.

An object of the present invention is to supply water from a water source to a fire-extinguishing head disposed in each part by pressurizing the water source in another building when the water source in the fire extinguishing system is insufficient. There are a plurality of buildings having fire extinguishing equipment provided with a pressurized water supply device to be provided, each building is provided with a water amount monitoring device, and a branch pipe having an on-off valve is branched from a water supply main pipe. In the event that a fire occurs, a support water signal is sent out when the water level monitoring device of the fire building detects a decrease in water, and the pressurized water supply of other buildings other than the fire building based on the support water signal based on the support water signal. The fire extinguishing water is supplied to the fired building by activating the apparatus and opening the on-off valve of the branch pipe from the water supply main of the other building. The branch pipes branched from the respective water supply main pipes in the plurality of buildings are arranged in different water sources of different buildings, and the branch pipes in the plurality of buildings are connected to each other through an on-off valve. It is shared by books.

A water source in each building is provided with a branch pipe end having an on-off valve branched from a water supply main pipe in another building, or a branch pipe branched from a water supply main pipe in each building. , May be shared by one.

[0008]

When a fire occurs and the pressurized water supply device supplies pressurized water to the fire extinguishing equipment head, if the scale of the fire is large and the water is discharged for a long time, the amount of water in the water source will be reduced. Then, the water amount monitoring device operates and sends a signal to the fire extinguishing equipment of another building. Upon receiving the signal, the other fire extinguishing equipment activates the pressurized water supply device, opens the opening valve of the branch pipe branched from the water supply main pipe, and supports and supplies pressurized water to the fire extinguishing equipment operated by the water amount monitoring device. If this facility is installed in each of the buildings to be shared, and the water source can be shared, it can be assumed that the water source has a huge amount of water, and there is no need to worry about the amount of water.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram of a fire extinguishing system using the present invention, in which buildings 1 and 2 are connected. Both buildings 1, 2
In a so-called pressurized water supply device 11, 21 pressurizes the water of the water sources 12, 22, and supplies pressurized water to closed sprinkler heads 14, 24 which are fire extinguishing heads via water supply main pipes 13, 23. A closed wet sprinkler fire extinguishing system is provided.

[0010] The pressurized water supply devices 11 and 21 include pumps 111 and 211.
, Motors 112 and 212, and start-up boards 113 and 213, and priming devices 114 and 214 are provided. Starter board 113
, 213 are connected to the monitoring panels 15 and 25 for each fire extinguishing equipment, and further connected to the fire receivers 16 and 26, and the district bell 161,
Ring 261 in case of fire. From the water mains 13, 23,
Pressure air tanks 133, 233 having pressure switches 132, 232 for detecting the operation of fire extinguishing equipment via branch pipes 131, 231.
The connection sprinklers 134 and 234, which are actually connectable from outside, are provided in front of them.
In addition, branch pipes 141 and 241 to the fire extinguishing heads 14 and 24 have an automatic alarm valve 142 having pressure switches 143 and 243,
242 are provided. G indicates a ground line.

Branch pipes 171 and 271 having on-off valves 17 and 27 are provided from branch pipes 131 and 231 from the water supply main pipes 13 and 23, and their tip portions 172 and 272 are connected to the other water sources 22, 12 respectively.
Has been inserted. The water sources 12 and 22 are provided with water amount monitoring devices 18 and 28, respectively, for monitoring the amount of fire extinguishing water stored in the water sources 12 and 22.

When a fire occurs in the building 1,
First, the closed sprinkler head 14 at the fire point operates,
Start watering. Then, the pressure in the branch pipe 141 decreases, the automatic alarm valve 142 opens, the pressure switch 143 operates, and the operated floor or fire extinguishing section is sent to the monitoring panel 15 as a signal. Then, the pressure in the water supply main pipe 13 is also reduced by the discharge of water from the head 14, the pressure switch 132 of the pressure air tank 133 for monitoring the pressure is operated, and a start signal of the fire extinguishing equipment is transmitted to the monitoring panel 15.

The monitoring panel 15 which has received each signal sends an activation command for the pump 111 to the activation panel 113, and the pressure switch 13
Information from 2 etc. is sent to the fire receiver 16. When the fire extinguishing system starts, the fire receiver 16
Ring the 161. When the start-up panel 113 of the pressurized water supply device 11 receives a start-up command from the monitoring panel 15, the motor 11 of the pump 111
Start 2 The pump 111 sucks and pressurizes the fire extinguishing water in the water source 12 and sends it to the water supply main pipe 13.

If the amount of water sprayed from the head 14 is large or long-term, such as when the scale of a fire is large, the amount of fire extinguishing water in the water source 12 decreases, and eventually disappears.
If the fire water runs out before the fire is suppressed, the operation of the fire-extinguishing equipment is wasted. Therefore, when the amount of fire extinguishing water in the water source 12 decreases, the water level monitoring device 18 that monitors the water level using a plurality of electrodes operates.

The water level monitoring device 18 sends a signal to the monitoring panel 15 when the fire extinguishing water of the water source 12 decreases to a predetermined water level.
Upon receiving the signal, the monitoring panel 15 sends a support water supply signal to the monitoring panel 25 of the fire extinguishing equipment of the adjacent building 2 via the fire receiver 16 and the like. The monitoring panel 25 receiving the signal starts supporting water supply.

First, the monitoring panel 25 sends an open signal to the on-off valve 27 so that the branch pipe 271 from the water supply main pipe 23 is connected to the water source 12 of the building 1. In this state, the monitor board 25 sends a start command to the start board 213 of the pressurized water supply device 21 to start the motor 212 of the pump 211. The pump 211 sucks and pressurizes the fire extinguishing water in the water source 22 and sends it to the water supply main pipe 23. Then, the pressurized water in the water supply main pipe 23 is transmitted through the branch pipe 271 via the branch pipe 231, and flows into the water source 12 having the tip 272.

In the building 1, the fire extinguishing activity can be continued by using the fire extinguishing water from the building 2, and even if the fire is large,
It is possible to spray water sufficiently. If such facilities are provided in connected buildings or the like, fire extinguishing activities similar to those having an unlimited number of water sources can be performed.

It is necessary for the buildings 1 and 2 to exchange information about fire with each other, and it is preferable to be able to transmit and receive information using a dedicated signal line, although the transmission method is not limited. In the case where there is a fire in both buildings 1 and 2 at the same time, especially when there is a strong possibility of spreading the fire, it is necessary to limit the amount of water to be supported and supplied. Further, in view of this point, the building at the water source for supporting water supply is preferably not a building adjacent to the building but a building at a certain distance.

When the fire extinguishing activity is completed, the starting board
The pumps 111 and 211 are manually stopped from 113 and 213, the shutoff valves 17 and 27 are closed, and the fire extinguishing water is stored in the water sources 12 and 22.

FIG. 2 is a system diagram of another embodiment of a fire extinguishing system utilizing the present invention. As in the case of FIG. 1, buildings 1 and 2 are connected. The same reference numerals in both buildings 1 and 2 as those in FIG. 1 are the same constituent members, and as in FIG. 1, a wet closed-type sprinkler fire extinguishing system is provided.

The major difference between the configuration of FIG. 2 and FIG. 1 is that the two main water supply pipes 13 and 23 are connected by branch pipes 371 via branch pipes 131 and 231. At the end of the branch pipe 371, on-off valves 317 and 327 having the same operation as the on-off valves 17 and 27 in FIG. 1 are provided.
And a check valve for bypassing the on-off valves 317 and 327
318, 328 are provided, and when the on-off valves 317, 327 are opened, the open valve 327 in which the pressurized water in the branch pipe 371 is not opened.
, 317 into the water supply main pipes 23, 13. The same effect can be obtained by providing one valve common to any of the branch pipes 371 for both the open valves 317 and 327.

As in the case of FIG. 1, when a fire occurs in the building 1, first, a closed type sprinkler head 14 at a fire point is used.
Works and starts watering. Then, the pressure switch 143 of the automatic alarm valve 142 operates to send a signal to the monitoring panel 15. Then, the pressure in the water supply main pipe 13 is reduced by a pressure air tank.
The pressure switch 132 at 133 detects this and sends a start signal of the fire extinguishing equipment to the monitoring panel 15.

The monitoring panel 15 which has received each signal sends an activation command for the pump 111 to the activation panel 113, and the activation panel 113 of the pressurized water supply device 11 receives the activation command from the monitoring panel 15 to receive the pump command.
The first motor 112 is started. The pump 111 sucks and pressurizes the fire extinguishing water in the water source 12 and sends it to the water supply main pipe 13.

When a large amount of water is sprinkled from the head 14 and the fire extinguishing water in the water source 12 decreases for a long time, the water level monitoring device 18 for monitoring the water level operates. The water level monitoring device 18 sends a signal to the monitoring panel 15 when the fire extinguishing water of the water source 12 decreases to a predetermined water level, and the monitoring panel 15 receiving the signal sends the signal to the fire receiver 16.
The support water supply signal is transmitted to the monitoring panel 25 of the fire extinguishing equipment of the adjacent building 2 via the above. The monitoring panel 25 receiving the signal starts supporting water supply.

First, the monitoring panel 25 sends an open signal to the on-off valve 327 so as to pass through the branch pipe 371 from the water supply main pipe 23 to the water supply main pipe 13. In this state, the monitoring panel 25
A start command for the pump 211 is sent to 3 and the pump 211 is started. The pump 211 has a water supply capacity equal to or higher than that of the pump 111, and sucks and pressurizes fire-extinguishing water in the water source 22 and sends it to the water supply main pipe 23. Then, the pressurized water in the water supply main pipe 23 is transmitted through the branch pipe 371 through the branch pipe 231 and is checked.
And flows into the water supply main pipe 13. Here, if the check valve 318 is provided, the pressurized water in the water supply main pipe 13 which has already been pressurized does not flow backward, and after the pump 211 is sufficiently pressurized, the pressure in the water supply main pipe 23 is reduced. The pressurized water flows into the water supply main pipe 13. Then, when the fire water in the water source 12 runs out, the pump 111 may be stopped.

Also in this embodiment, similarly to the case of FIG. 1, in the building 1, the fire extinguishing water from the building 2 can be used to continue the fire extinguishing operation. And the same effect as in FIG. 1 can be obtained.

Further, in this embodiment, when the pressurized water supply device 11 cannot be used, water can be sprinkled from the head 14 by using the pressurized water supply device 21, so that the water source can be shared. At the same time as the water supply system, a support pressurization system that is common to the pressurized water supply device is enabled.

When the fire extinguishing operation is completed, the starting board is operated as in FIG.
The pumps 111 and 211 are manually stopped from 113 and 213, the on-off valves 317 and 327 are closed, and fire water is stored in the water sources 12 and 22.

In the above two embodiments, the case where the wet closed type sprinkler heads 14 and 24 which are generally used as the water sprinkling head of the fire extinguishing equipment are used is shown. However, not only the open type sprinkler head but also the indoor fire hydrant, The head may be a drainer, a water spray, a water cannon, or the like.

The pressurized water feeders 11 and 21 are also provided with pumps 111.
, 211 may be an elevated water tank, a pressure tank, or the like. If an auxiliary pump is provided, the auxiliary pump may be used to supply water for support.

Further, the branching positions of the branch pipes 171 271 371 may be directly from the water supply main pipes 13 23 other than the branch pipes 131 231 or from the tips of the other branch pipes 141 241.

The case of two buildings has been described above, but it goes without saying that more than two buildings may be used.

As described above, according to the present invention, there are a plurality of buildings having a fire extinguishing system in which a pressurized water supply device pressurizes water from a water source and supplies the water to a fire extinguishing head, and a fire has occurred in any of the buildings. In such a case, when the water source of the fire building decreased all or more than the predetermined ratio, fire extinguishing water was supplied to the fire building from the water source of the building other than the building,
In each building, fire extinguishing water can be shared by supporting water supply to continue fire extinguishing activities, and even large-scale fires can be sprinkled sufficiently. If such facilities are provided in connected buildings or the like, fire extinguishing activities similar to those having an unlimited number of water sources can be performed.

[Brief description of the drawings]

FIG. 1 is a system diagram of a fire extinguisher using the present invention.

FIG. 2 is a system diagram of another embodiment of a fire extinguisher using the present invention.

[Explanation of symbols]

 11,21 Pressurized water supply device 12,22 Water source 13,23 Water supply main line 14,24 Sprinkler head (head for fire extinguishing equipment) 17,27,317,327 Open / close valve 171,271,371 Branch pipe 18,28 Water level monitoring device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A62C 35/60-35/68

Claims (3)

(57) [Claims] 1. A building having a fire extinguishing system provided with a pressurized water supply device for pressurizing and supplying water of a water source to a fire extinguishing head disposed in each part, and each building is provided with a water amount monitoring device. If a branch pipe having an on-off valve is branched from the water supply main pipe and a fire occurs in any of them, a support water supply signal is sent when the water quantity monitoring device of the fire building detects a decrease in water. Then, based on the support water supply signal, the pressurized water supply device of the building other than the fire building is started, and the on-off valve of the branch pipe from the water supply main of the other building is opened to extinguish the fire. A fire extinguishing system, wherein water is supplied to the fire building. 2. The fire extinguishing system according to claim 1, wherein the branch pipes branched from the respective water supply main pipes in a plurality of buildings are arranged in different water sources of different buildings. 3. The fire extinguishing system according to claim 1, wherein each branch pipe in a plurality of buildings is shared by one through an on-off valve.