JPH07155398A - Fire extinguishing system - Google Patents

Abstract

PURPOSE:To prevent the malfunction of a drencher system, to lessen water loss and to improve the reliability of the system by detecting the water flow of a sprinkler water feed system and impressing the detection signal thereof to a valve means, thereby opening a drencher water feed system. CONSTITUTION:An alarm valve 32 detects the water flow of an auxiliary piping 30b and outputs the detection signal ST to a first control panel 31 when a sprinkler head 26 of a sprinkler system 22 starts spraying water. The, first control panel 31 outputs a valve opening signal S3 to open a solenoid valve 42 of the drencher system 24 to the drencher system simultaneously with starting of a first pump 29. The drencher system 42 is opened by the valve opening signal S3 and a simultaneous release valve 40 is opened and, therefore, the drencher system 24 is started. The automatic starting of the drencher system 24 is thereby made possible according to starting of the sprinkler system 22 when fire is broken out in a room 20. Then, the need for a fire sensor which is heretofore disposed to start the drencher system 24 is eliminated.

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, and more particularly to a fire extinguishing system suitable for a building in which a sprinkler system and a drainer system are installed in parallel.

[0002]

2. Description of the Related Art At present, most buildings are equipped with fire fighting equipment such as sprinklers, fire alarms, and fire hydrants in preparation for a fire. Even if a fire should occur inside the building, the fire extinguishing equipment can promptly notify people inside the building of the fire, and the fire can be extinguished quickly. On the other hand, especially in urban areas, the buildings are very close together, and the spaces between adjacent buildings are very close to each other. There is a possibility that it will burn into other buildings in the city and develop into a large-scale fire, which needs to be dealt with. Therefore, before the fire that occurred in another building burned into the building,
Drainer equipment has been installed to discharge water from the outside of the building toward the outer wall and roof and form a water film on the outer surface of the building. As a result, even if sparks or the like are scattered from other buildings, this water film can shield them and prevent the spread of fire, thus ensuring more reliable fire protection measures. Then, taking this one step further, in addition to fire doors and shutters, a drainer equipment 2 as shown in Fig. 4 was installed to prevent fires inside the building. Is becoming possible.

In the interior 4 of the building, a drain head 6 and a fire detector 8 are provided on the ceiling surface 4a. When a fire occurs, the fire detector 8 first detects smoke or heat of the fire and outputs a fire detection signal to the control panel 10. Next, the control panel 10 receiving the sensing signal,
The location of the fire is judged from the position of the fire detector 8 that has detected the fire. Then, in order to send water under pressure to the drain head 6 corresponding to the place where the fire has occurred, the valve opening signal is output to the solenoid valve 14 that opens the corresponding simultaneous opening valve 12, and further pressurized water is sent. Pump 16
A start signal is output to start. When the pressurized water pump 16 receives the start signal and is activated, water is pressure-fed and supplied to the drain head 6 through the simultaneous opening valve 12. The pressure-fed water reaches the drain head 6, water sprinkling is started downward from the water, a water curtain is formed, a fire that tends to spread is blocked, and spread of fire is blocked. Also, this simultaneous opening valve 12
Is opened by the manual valve 18 in addition to the solenoid valve 14,
People can open the valve just in case.

[0004]

By the way, unlike the sprinkler equipment, which is the same fire extinguishing equipment, is activated by the head being heat-sensitive, this drainer equipment 2 uses the fire detection signal from the fire detector 8 to detect a fire. It was supposed to be started. However, the fire detector 8 is configured to operate extremely sensitively from the viewpoint of preventing the spread of fire, and in some cases, smoke of cigarettes may be mistakenly recognized as a fire. If the drainer equipment 2 is activated due to this misidentification, the pressurized water pump 1
Water is pumped one after another from 6 and a large amount of water is discharged from the drain head 6, so that the room 2 is flooded. The damage caused by this misidentification is enormous and
The occurrence rate of malfunction is higher than that of the sprinkler equipment, and if this happens frequently, the reliability of the drainage equipment 2 is deteriorated.

The present invention has been made in view of the above circumstances, and an object thereof is to be able to automatically start a drainage facility in the same manner as before when a fire occurs, and to compare with the conventional one. The purpose of the present invention is to provide a fire-fighting facility that prevents malfunction of the drainage facility, reduces water loss, and improves reliability.

[0006]

In order to achieve the above object, the fire fighting equipment according to the present invention provides a drain to the sprinkler equipment which detects the occurrence of a fire and starts watering from the sprinkler water supply system by opening the valve means. In a fire extinguishing system in which a drainage system for starting water sprinkling from a char water supply system is installed in parallel, the running water of the sprinkler water supply system is detected, and the detection signal is applied to the valve means to open it. To do.

Further, the drain water supply system is joined to the sprinkler water supply system.

[0008]

In the present invention having the above structure, a sprinkler facility for detecting a fire and starting water sprinkling from the sprinkler water supply system is provided in parallel with a drainer facility for starting water spraying from the drainer water supply system by opening the valve means. In the fire extinguishing equipment, the running water of the sprinkler water supply system was detected,
By applying the detection signal to the valve means and opening it, it is possible to automatically start the drainer equipment when the sprinkler equipment is started when a fire occurs. In other words, in this sprinkler facility, when a fire occurs, the sprinkler head senses the heat and immediately starts discharging water to extinguish the fire. Then, when this fire extinguishing is started, water is sequentially supplied to the sprinkler head, so that a flowing water reaction is detected in the sprinkler water supply system. Then, the detection signal is applied to the valve means of the drainage equipment, and this valve means is opened, so that the drainage equipment automatically starts up together with the sprinkler equipment. Therefore, in the event of a fire, it is possible to automatically and reliably start the drainage equipment as before, as well as the conventional equipment. The old fire detector is no longer needed.

Further, the sprinkler head of the sprinkler facility does not discharge water unless the inside of the building becomes extremely hot due to an actual fire. From this, as in the past, the fire detector that automatically started the drainage equipment is configured to operate extremely sensitively from the viewpoint of fire spread prevention, and in some cases, cigarette smoke, etc. It is possible to prevent the malfunction of the drainage equipment of the present invention, as compared with the possibility of misidentifying as a fire.

Further, in the present invention, as described above in detail, water is supplied to both of the drainer equipment at the same time because the drainer equipment is started up along with the start-up of the sprinkler equipment. Therefore, it becomes possible to join the drainer water supply system with the sprinkler water supply system. Further, by making the water supply systems of both the sprinkler equipment and the drainage equipment the same, it is not necessary to provide an independent water supply system for each of them as in the conventional case, and it is possible to reduce the construction cost. Become.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram showing a fire extinguishing facility according to claim 1 of the present invention provided in a room of a building.
In the room 20 of the building, a sprinkler facility 22 and a drainer facility 24 are installed in case of fire. The sprinkler facility 22 detects a fire that has occurred, automatically extinguishes the fire, and quickly extinguishes the fire. On the other hand, the drainage facility 24 is for preventing the fire from spreading to the surroundings and preventing the spread of fire.

First, the sprinkler equipment 22 will be described. This sprinkler equipment 22 is a conventionally known closed type sprinkler head 2 in which the water outlet is normally closed and the water outlet is opened only by the heat of fire.
6, which is mainly composed of the ceiling surface 2 of the room 20.
0a includes a plurality of sprinkler heads 26 which are provided at intervals from each other and detect a fire and discharge water, and a sprinkler water supply system 28 which is connected to the sprinkler head 26 and supplies water. Then, in the event of a fire, the sprinkler head 26 has a mechanism in which a water outlet is opened by the heat and water supplied from the sprinkler water supply system 28 is sprinkled into the room 20. That is, the sprinkler facility 22 has a structure in which water is not sprinkled from the sprinkler head 26 unless a high temperature condition such as a fire occurs. Explaining the sprinkler water supply system 28, it is composed of a pipe 30 connected to the sprinkler head 26 and a first pump 29 interposed in the pipe 30 to pump water. The first pump 29 is installed in the underground space of the building or the like. The first pump 29 is connected to the first control panel 3
It is operated by a signal input from 1 and is stopped in normal times, but when a fire occurs, water is pumped up from a water tank (not shown) and pumped. On the other hand, the pipe 30 is the first pump 2
9 is composed of a main pipe 30a arranged in the entire building, and a sub-pipe 30b branched from the main pipe 30a and individually arranged in each room 20. The water pumped from the first pump 29 passes through the main pipe 30a and passes through the main pipe 30a.
Is guided to the sprinkler head 26 in the room 20 through the auxiliary pipe 30b. The inside of the pipe 30 from the first pump 29 to the sprinkler head 26 is always filled with pressurized water, and if the sprinkler head 26 is opened by the heat of fire, sprinkling can be started immediately. From this fact, if water sprinkling from the sprinkler head 26 is started, the water pressure-filled in the pipe 30 always starts flowing toward the opened sprinkler head 26, so that if this running water is detected. This can be considered as a fire. In addition to this, by detecting that water is flowing through the sub-pipe 30b, it is possible to identify the location of the fire. Therefore, an alarm valve 32 for detecting running water is provided in the middle of the sub pipe 30b,
The detection signal S1 is output. The alarm signal is sounded by the detection signal S1, and the fire occurrence location and its scale are displayed on a fire display panel or the like to show the evacuation route to people inside the building. Further, the alarm valve 32 is connected to the first control panel 31, and this detection signal S1 is input to the first control panel 31, which activates the first pump 29 to sprinkle water from the sprinkler head 26. The fire can be continued by continuing.

Next, the drainer equipment 24 installed in parallel with the sprinkler equipment 22 will be described. The nozzle 34 of the drainage facility 24 is an open type having a water spouting function at all times and having a water sprinkling function. Mainly, the nozzle 34 provided on the ceiling surface 20a of the room 20 and water are supplied to it. And a drainage water supply system 36.
A drainer water supply system 36 is connected to the nozzle 34, and when water is sent, it discharges the water as it is, forms a water curtain, and shuts off the flame. On the other hand, the drainage water supply system 36 is configured similarly to the sprinkler water supply system 28, and is connected to the nozzle 34 and a pipe 38 for supplying water.
And a second pump 37 that is interposed in the pipe 38 and sends water to the nozzle 34 under pressure. This second pump 37 also
Like the first pump 29 of the sprinkler water supply system 28, it is installed underground in the building. Then, the second pump 37
Although it is operated by a signal input from the second control panel 39 and is normally stopped, when a fire occurs, water is pumped from a water tank (not shown) and pumped to the pipe 38. The pipe 38 is a main pipe 30a arranged in the entire building from the second pump 37, and a sub-pipe 30a branched from the main pipe 30a and individually arranged in each room 20.
It consists of and. The water pumped from the second pump 37 is guided to the nozzle 34 through the main pipe 38a and the sub-pipe 38b. Here, the point different from the sprinkler facility 22 is that the simultaneous opening valve 40 is provided in the middle of the sub-pipe 38b. The simultaneous open valve 40 is provided with a solenoid valve 42 connected to a downstream pipe 38c, a bypass pipe 38d bypassing the solenoid valve 42, and a manual valve 44. This simultaneous release valve 4
For 0, a cylinder valve that does not require any power from the other is generally used, and water in the cylinder is supplied to the downstream pipe 38.
The valve is opened by discharging through c or the bypass pipe 38d. This drainage is performed by opening either the solenoid valve 42 or the manual valve 44.
The latter manual valve 44 is generally provided in the room 20 or the like,
The simultaneous open valve 40 can be opened from the inside of the building by a person's hand, and is provided as an emergency measure. Further, the former solenoid valve 42 is opened by the valve opening signal S3 inputted from this. This allows
The simultaneous opening valve 40 is opened. When the simultaneous open valve 40 is opened, a start signal S2 is output to the second control panel 39,
Further, the start signal S is sent from the second control panel 39 to the second pump 37.
2 is output and the second pump 37 is activated. Since the inside of the pipe 38 from the second pump 37 to the simultaneous open valve 40 is constantly filled with pressurized water, when the second pump 37 is activated, the pressurized water is first pumped to the nozzle 34. Therefore, the nozzle 34 can immediately discharge water and can quickly prevent the spread of fire.

The operation of this embodiment will be described below.
In this fire extinguishing facility, when the sprinkler head 26 of the sprinkler facility 22 described above starts watering, the alarm valve 32 detects running water in the auxiliary pipe 30b and outputs a detection signal S1 to the first control panel 31. When this detection signal S1 is input to the first control panel 31, the first pump 29 is started. However, in the embodiment, at the same time, the first control panel 31 controls the solenoid valve 42 of the drainage equipment 24. A valve opening signal S3 for opening it is output. Due to this valve opening signal S3, the solenoid valve 42 is opened, and the simultaneous opening valve 40 is opened, so that the drainage equipment 24 is activated. From this, when a fire occurs in the room 20, the drainer equipment 24 can be automatically started along with the start of the sprinkler equipment 22. Therefore, when a fire occurs, it is possible to automatically and surely start the drainage equipment 24 as in the conventional case, and also to start the drainage equipment as in the conventional case. The fire detector is not needed, and the cost can be reduced. Further, the sprinkler head 26 of the sprinkler facility 22 does not discharge water unless the room 20 becomes extremely hot due to an actual fire. For this reason, the fire detector that automatically activates the drainage equipment 24 as in the prior art is configured to operate extremely sensitively from the viewpoint of fire spread prevention, and in some cases, smoke from cigarettes. Comparing in consideration that there is a possibility of misidentifying such as a fire, the occurrence rate of malfunction of the drainage equipment 24 in the fire extinguishing equipment of the present invention can be significantly reduced, and the reliability is extremely high. Fire extinguishing equipment can be realized.

FIG. 2 shows an embodiment of the fire extinguishing equipment according to claim 2. Explaining only the differences from FIG. 1, in FIG. 1, the first pump 29, the second pump 37, and the first control panel 31 for operating the sprinkler equipment 22 and the drain equipment 24, respectively, are shown in FIG. , Second control panel 39, and main pipes 30a, 38
a was separately arranged. However, since the drainer equipment 24 is started along with the start-up of the sprinkler equipment 22 as in the present embodiment, water is supplied to both at the same time. Therefore, the drainage equipment 2
4 does not have the first pump 29 and the main pipe 38a, but instead has the sub-pipe 38 on the upstream side of the simultaneous opening valve 40.
b is directly connected to the main pipe 30a of the sprinkler facility 22. The third pump 45 and the third control panel 47 that operates the third pump 45 are shared by the drainer equipment 24 and the sprinkler equipment 22. Further, the signal system of the sprinkler equipment 22 is carried out by the third control panel 47 as it is as in the above-mentioned embodiment, while the signal of the drainer equipment 24 is inputted / outputted from this third control panel 47. Therefore, by making the water supply systems of both the sprinkler equipment 22 and the drainer equipment 24 the same, it is not necessary to provide an independent water supply system for each of them, and it is possible to reduce the construction cost. In addition, even in a building where sprinkler equipment has already been installed, it is possible to install a new drainage equipment with a simple construction, and because the fire extinguishing equipment is enhanced, further fire prevention measures can be taken even after the building is completed. It will be possible.

The embodiment shown in FIGS. 1 and 2 is very effective when used in a large-scale building having an atrium space, which has been increasing in number in recent years. In other words, in a building with an atrium space,
This is because the fire can easily spread and appropriate measures must be taken. FIG. 3 shows an embodiment in which the present invention is installed in a large-scale building 48 having an atrium space 46. In the building 48, generally, the sprinkler head 26 described in detail above is arranged on the ceiling surface of each room to extinguish a fire in the room. Further, by disposing the nozzle 34 of the above-described drainer equipment on the ceiling surface near the opening of each floor facing the atrium space 46,
It is possible to prevent a fire that occurred on one floor from spreading to another floor via the atrium space 46.
Therefore, unlike the fire door and the fire shutter, this drainage facility 24 has no possibility of causing a very dangerous flashover, and is therefore very effective. Therefore, when this fire extinguishing equipment is applied to a building having an atrium space, the above-described effects can be sufficiently exerted, which is very excellent.

[0017]

According to the present invention, the sprinkler equipment for detecting the occurrence of a fire and starting water sprinkling from the sprinkler water supply system is provided with the drainer equipment for starting water sprinkling from the drainer water supply system by opening the valve means. In the fire extinguishing equipment installed, by detecting the running water of the sprinkler water supply system and applying the detection signal to the valve means to open it, this drainer equipment can be activated with the activation of the sprinkler equipment when a fire occurs. , Can be automatically started. Therefore, in the event of a fire, it is possible to automatically and reliably start the drainage equipment as in the past, and the fire detector that was conventionally provided to activate the drainage equipment. Is unnecessary, and the cost can be reduced.

Further, as in the prior art, the fire detector that automatically activates the drainage equipment is constructed so as to operate extremely sensitively from the viewpoint of preventing the spread of fire. Compared with the possibility of misidentifying a fire and the like as a fire, the drainage equipment of the present invention can prevent the malfunction and realize a highly reliable fire extinguishing equipment.

Further, by merging the drainer water supply system with the sprinkler water supply system, the water supply systems of both the sprinkler equipment and the drainer equipment can be made the same, and the independent water supply system can be provided for each of them as in the conventional case. There is no need to install it, and the construction cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment according to the present invention.

FIG. 2 is a schematic configuration diagram showing an embodiment according to claim 2 of the present invention.

FIG. 3 is a vertical sectional view showing an embodiment installed in a building having an atrium space.

FIG. 4 is a schematic configuration diagram showing a conventional example.

[Explanation of symbols]

 22 Sprinkler Equipment 24 Drainer Equipment 26 Sprinkler Head 28 Sprinkler Water Supply System 30 Piping 32 Alarm Valve 34 Nozzle 36 Drainer Water Supply System 38 Piping 40 Simultaneous Open Valve

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tamotsu Nakayama 2-3 Chome, Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Head Office

Claims (2)

[Claims] 1. A fire extinguishing system in which a sprinkler facility for detecting a fire occurrence and starting water sprinkling from a sprinkler water supply system is also provided with a drainer facility for starting water spraying from a drainer water supply system by opening a valve means. Fire extinguishing equipment characterized by detecting running water of a water supply system and applying the detection signal to the valve means to open it. 2. A fire extinguishing facility characterized in that the drainage water supply system is joined to the sprinkler water supply system.