JPH0631014A - Fire extinguishing system - Google Patents

Abstract

PURPOSE:To enable the replenishment of pressurized water by using the pressurized water feeders of the other building when the pressurized water feeders of the fire extinguishing system cannot be started. CONSTITUTION:There are the plural buildings having the fire extinguishing system. Water feed mains 13, 23 on the secondary side of the pressurized water feeders 11, 21 are connected by branch pipes 371 having stop valves 317, 327. The pressurized water feeders 11, 21 are started to open the stop valves 317, 327 according to the signals from monitor panels 25, 15 of the other building so that the fire extinguishing water of the water sources 12, 22 is supplied to fire extinguishing heads 14, 24 of of this building. The fire extinguishing water is commonly used by the assisted pressurization in the respective building and the execution of fire extinguishing is possible even in the event of the trouble in the pressurized water feeders.

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 pressurizing a building which is fully equipped with fire extinguishing systems.

[0002]

BACKGROUND OF THE INVENTION Water is the main source of extinction for most fires,
It is considered that this will not change even if scientific fire fighting advances in the future. In a normal building, almost all fire extinguishing equipment using a closed sprinkler head is provided, and at the same time, a pressurized water supply device such as one using a pump that pressurizes and sends water for extinguishing water from a water source is provided. Even in a building town, each building is always provided with a separate water source and pressurized water supply device.

[0003]

The pressurized water supply device has an important role in fire extinguishing equipment. For example, in a closed type sprinkler fire extinguishing equipment, even if a sprinkler head opened by a hot air flow is opened by a fire. If the pressurized water is not supplied, the fire cannot be suppressed.
There are various causes such as abnormal pump function, abnormal piping, and inadequate power source. Similarly, in the case of other fire extinguishing equipment, pressurized water is required, and if the pressurized water supply device cannot be activated, the extinguishing equipment is equivalent to none.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to make it possible to replenish pressurized water by using a pressurized water supply device of another building when the pressurized water supply device of a fire extinguishing facility cannot be started. If there are multiple buildings with fire extinguishing equipment and a fire occurs in any of the buildings, when the fire extinguishing water of the fire building cannot be pressurized, it is necessary to move from the water source of the building other than the fire building to the fire building. It is characterized by performing pressurized water supply, and when a fire occurs in any of the buildings, a signal from the fire building monitoring panel that detects that the fire water of the fired building cannot be sent under pressure Based on
Activate the pressurized water supply equipment of another building, open the branch valve that connects the water supply main of the other building to the water supply main of the fire building, and supply the pressurized water to the fire extinguishing equipment of the fire building. It is characterized by that.

A branch pipe having an on-off valve branched from the water main pipe on the secondary side of the pressurized water supply system in the first building;
The branch pipe having an on-off valve branched from the water supply main pipe on the secondary side of the pressurized water supply device in the second building is commonly used as one pipe.

[0006]

When a fire occurs and an attempt is made to supply pressurized water to the head for fire extinguishing equipment, unless the pressurized water supply device is activated, the water supply main is not pressurized. The monitoring panel of the fire extinguishing equipment that detects it sends a signal to the fire extinguishing equipment of another building.
Other fire extinguishing equipment receiving the signal activated the pressurized water supply device,
The open valve of the branch pipe branched from the water supply main is opened, and the fire extinguishing water is cheered and pressurized to the fire extinguishing equipment that sent the signal. If this equipment is installed in each building that is linked to each other and it is possible to share the pressurized water supply device, it is possible to assume a huge amount of water source water and ensure the operation of the fire extinguishing equipment.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram of fire extinguishing equipment using the present invention, in which buildings 1 and 2 are connected. Both buildings 1, 2
The so-called pressurized water supply devices 11, 21 pressurize the water from the water sources 12, 22 and supply the pressurized water to the closed-type sprinkler heads 14, 24, which are heads for extinguishing fire, via the water supply mains 13, 23. Wet closed sprinkler fire extinguishing equipment is provided. Although there are two buildings in this drawing, the same equipment can be provided even if there are more than two buildings.

The pressurized water supply devices 11 and 21 include pumps 111 and 211, respectively.
, Motors 112 and 212, start-up boards 113 and 213, and priming devices 114 and 214 are provided. Start-up board 113
, 213 are connected to the monitoring panels 15 and 25 for the respective fire extinguishing equipment, and are further connected to the fire receivers 16 and 26, and the district bell 161,
Sound the 261 in case of fire. From the water mains 13 and 23,
Pressure air tanks 133 and 233 having pressure switches 132 and 232 for detecting the operation of fire extinguishing equipment via branch pipes 131 and 231
Is provided, and the connection sprinklers 134 and 234 that can actually be connected from the outside are provided at the end thereof.
Further, in the branch pipes 141 and 241 to the fire extinguishing heads 14 and 24, automatic alarm valves 142 and 143 having pressure switches 143 and 243,
242 are provided. And G shows a ground line.

Branch pipes 131 and 23 are provided between the main water supply pipes 13 and 23.
1 is connected by a branch pipe 371, and on-off valves 317 and 327 are provided at the ends of the branch pipe 371. Then, the check valves 318 and 328 for bypassing the open / close valves 317 and 327.
The check valves 318 and 328 are provided with a branch pipe 371.
The pressurized water in the inside flows into the water supply mains 13 and 23.

Further, the water sources 12 and 22 are provided with a water amount monitoring device 18,
28 is installed to monitor the amount of fire fighting water stored in 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, and the pressure switch 143 operates to send the operated floor or fire extinguishing section to the monitoring panel 15 as a signal. Then, the pressure in the main water supply pipe 13 is also lowered by the water discharged from the head 14, and the pressure switch 132 of the pressure air tank 133 that monitors the pressure is operated to send a start signal of the fire extinguishing equipment to the monitoring panel 15.

The monitoring board 15 receiving each signal sends a start command for the pump 111 to the starting board 113, and the pressure switch 13
Information from the 2nd class is transferred to the fire receiver 16. The fire receiver 16 is designed for the required area bell when the fire extinguishing equipment is activated.
Sound 161. Upon receiving a start-up command from the monitoring board 15, the start-up board 113 of the pressurized water supply device 11 receives the motor 11 of the pump 111.
Start up 2. The pump 111 suction-pressurizes the fire-extinguishing water in the water source 12 and sends it to the water supply main 13.

At this time, the pump is defective, the piping is defective,
If there is a disconnection of the power source, the pressure from the pressurized water supply device 11 will not be sufficient and the pressure in the water supply main 13 will not rise sufficiently. A device for detecting it may be provided, but here, the pressure air tank 13
When the pressure switch 132 of No. 3 is diverted, that is, when the pressure in the water main 13 increases again, the pressure switch 132 is restored.
If the pressure switch 132 does not recover after a lapse of a predetermined time after the start command for the pump 111 is sent to the starting board 113, it means that the pump 111 is not operating normally.

If a large amount of water is sprinkled from the head 14 for a long period of time, such as in the case of a large fire, the amount of fire extinguishing water in the water source 12 will decrease and will eventually disappear. If the fire extinguishing water is exhausted while the fire is not suppressed yet, the pressure in the water supply main 13 cannot be sufficiently increased. Therefore, when the extinguishing water in the water source 12 decreases, a water level monitoring device that monitors the water level using multiple electrodes.
18 works.

When the monitoring board 15 recognizes the defect of the pressurized water supply device 11 as described above, it sends a support pressure signal to the monitoring board 25 of the fire extinguishing equipment of the adjacent building 2 via the fire receiver 16 or the like.
Upon receiving the signal, the monitoring board 25 starts the support pressurization.

First, the monitoring board 25 sends an opening signal to the on-off valve 327 so that the branch pipe 371 from the water main 23 is connected to the water main 13 of the building 1. In this state, the monitoring board 25 sends a start command to the start board 213 of the pressurized water supply device 21, and the pump
Start the motor 212 of 211. The pump 211 suction-pressurizes the fire-extinguishing water in the water source 22 and sends it to the water supply main 23. Then, the pressurized water in the water supply main 23 is branched through the branch pipe 231.
After passing through 371, it flows into the water main 13 through the check valve 318.

In the building 1, the pressurized water from the building 2 can be used for fire extinguishing activities, and sufficient water can be sprayed even if the pump 111 is defective or a large-scale fire occurs. If such a facility is connected to each building and installed in each building, there is also an effect that fire extinguishing activities similar to those having an infinite water source become possible.

In both buildings 1 and 2, it is necessary to exchange information regarding fire with each other, and regardless of the transmission method, it is preferable that information can be transmitted and received using a dedicated signal line. In both buildings 1 and 2, the pumps 111 and 211 need to have the same pressure-feeding capacity, but they often vary depending on the scale. Since the validity can be known depending on the floor, if the validity is discriminated on the monitoring panel, the support pressurizing system can be used within a possible range. Before that, if the water supply capacity of the small-scale side is adjusted to the large-scale side,
No such device is necessary.

At the same time, when there is a fire, especially when there is a strong possibility that the fire will spread, it is preferable to use buildings that are a certain distance apart from adjacent buildings.

When the fire fighting activities are completed, the start-up board is operated as usual.
Pumps 111 and 211 started from 113 and 213 are manually stopped, on-off valves 317 and 327 are closed, and fire water is stored in water sources 12 and 22.

In the above-mentioned embodiment, the case of using the wet closed type sprinkler heads 14 and 24 which are generally used as the water sprinkling heads of the fire extinguishing equipment has been described. The head may be a water spray, a water cannon, or the like.

Further, the pressurized water supply devices 11 and 21 are also provided with the pump 111.
, 211 may be used as well as an elevated water tank or a pressure tank.

Further, the branching position of the branch pipe 371 is a branch pipe.
In addition to 131 and 231, it may be directly from the main water supply pipes 13 and 23 or from the tips of the other branch pipes 141 and 241.The branch pipe 371 is provided with open / close valves 317 and 327 and check valves 328 and 318 separately. Two
You may pipe to a book.

[0024]

INDUSTRIAL APPLICABILITY As described above, the present invention has a plurality of buildings having a fire extinguishing facility, and when a fire occurs in any of the buildings, when the fire extinguishing water of the building cannot be pressure-fed, other than the building. Since pressurized water is sent from the water source of the building to the fire building, fire extinguishing activities can be shared by each building by supporting and pressurizing water, and the reliability of the fire extinguishing equipment is significantly improved.

[Brief description of drawings]

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

[Explanation of symbols]

 11, 21 Pressurized water supply device 12, 22 Water source 13, 23 Water supply main 14, 24 Sprinkler head (head for fire extinguishing equipment) 317, 327 Open / close valve 371 Branch pipe

Claims (3)

[Claims] 1. When there are a plurality of buildings having fire extinguishing equipment, and a fire occurs in any of the plurality of buildings, when the fire extinguishing water of the fire building cannot be pressure-fed, a building other than the fire building is used. Fire extinguishing equipment, characterized in that pressurized water is sent from a water source of the building to the fire building. 2. A plurality of buildings having fire extinguishing equipment provided with a pressurized water supply device via a water supply main for supplying pressurized water to a fire extinguishing equipment head arranged in each part, and a fire occurs in any of the buildings. In the case of, based on the signal of the monitoring panel of the building of the fire that has detected that the fire extinguishing water of the building of the fire can not be pressure-fed, start the pressurized water supply device of the building other than the building of the fire, Open the on-off valve of the branch pipe that connects the water main of the other building to the water main of the fire building,
2. Pressurized water is supplied to the fire extinguishing equipment of the fire building.
Fire extinguishing equipment. 3. A branch pipe having an opening / closing valve branched from a main water supply main on the secondary side of a pressurized water supply device in a plurality of buildings is one.
The fire extinguishing equipment according to claim 1 or 2, which is shared by books.