KR200297747Y1 - Fire extinguishing system using fire sensor outputting multiline and foam extinguishing drug in underground common tunnel - Google Patents

Abstract

Disclosed is the division of underground co-operation zone into a certain zone, which blocks and extinguish the boundary area, blocks fire from spreading to other zones, and blocks zones using multi-wire fire detectors and fire extinguishing agents to prevent propagation to large fires. The firefighting system of the underground underground joint.

The present invention divides the underground coffers, which are installed in the basement as concrete structures to accommodate underground underground facilities such as electricity, gas, water, telecommunications, and sewerage, in each zone by 30 to 300m, and the divided zones. A fire swell system is installed at each boundary of the fire, and fire detectors for outputting a detection signal to each fire swell system are provided for each of the divided zones. And firefighting system can be interlocked to improve the initial fire extinguishing performance, and since the firefighting system is formed at the boundary of the zone, the fire does not spread to other zones and can be extinguished. The saturation system facilitates the suffocation and cooling effects regardless of whether the fire is an oil fire or a general fire. It can be digested.

Description

Fire extinguishing system using fire sensor outputting multiline and foam extinguishing drug in underground common tunnel}

The present invention relates to a fire suppression system for zone-blocking underground co-operation using a multi-line output fire detector and a pore gunpowder. It is to prevent the spread to large fires by blocking the spread.

As it is well known, underground underground zones improve the aesthetics of the city by jointly accommodating underground facilities such as electricity, gas and water supply facilities, communication facilities, and sewerage facilities that accompany road excavation. And means the facilities to be installed in the basement in order to ensure a smooth communication of traffic.

The underground cavity is a concrete structure installed in the shape of a tunnel to accommodate various cables and pipes, and if a fire occurs inside the underground cavity due to an electric short circuit or other internal or external causes, it is a combustible material such as a cable, a pipe, or a wall of a common port. The fire spreads rapidly, and eventually the fire spreads to all the underground underground areas of the interconnected city, which causes huge damages such as spreading the fire to other areas of other cities. In order to prevent this problem, it has recently been compulsory to have fire protection facilities in underground common areas.

Firefighting equipments installed in the underground common wards generally include fire detection systems such as constant temperature linear sensor, photoelectric smoke detector, and differential detector, fire protection system such as connection spraying equipment, fire door, and anti-combustion paint, powder fire extinguisher, etc. It can be divided into fire suppression system of fire suppression system. In case of fire detection system, only the location of fire source is displayed as central control room in case of fire occurrence. The practical effect is not great, and the powder fire extinguisher constituting the fire suppression system is a manual type, and therefore, there is a limited problem considering that it is impossible for a person to access in case of a fire in the underground underground.

Unlike the general fire, as described above, the fire in the underground co-operation zone is different from the general fire. Therefore, the fire extinguishes quickly through the wall of the underground co-operation zone and can spread to large fires. It is more important to block first, and for this purpose, there is a tendency to have facilities such as a firewall, but the number is limited, and such facilities also have a limited function so that they do not have the effect of perfect zoning.

In particular, large amounts of insulating oil used for 154 ㎸ are stored in the electric power ward, which is a kind of underground common ward, so it is classified as a Class B fire (oil fire) in the event of a fire in such a power ward. Since the fire spreads to other zones, it causes the biggest damage among the underground co-fires, but no countermeasures have been taken to increase the damage.

The present invention has been proposed in view of this point, and the saturation system that is applied to the common oil tank, etc. has been improved to a simple structure for the underground cavity, and installed at all boundaries of the pre-divided areas, and multiple output lines are provided. Fire detector equipped with a fire alarm system is interlocked with this fire extinguishing system to block the area where the fire occurs and to block additional propagation of the fire.In the case of underground underground fire, regardless of general fire and oil fire, It is to provide a zone-blocking fire suppression system using a multi-wire output fire detector and foaming agent that can block and extinguish a fire.

1 is a schematic diagram of a fire suppression system according to the present invention.

2 is an embodiment of the present invention,

(a) is where the fire detector and fire protection system are directly connected.

(b) indicates that the fire detector is connected to the saturation system via a control device.

3 is a configuration diagram of a saturation system according to Utility Model Registration No. 2002-21158.

*** Explanation of symbols for the main parts of the drawing ***

1: underground joint district 2: area

3: fire extinguishing system 4: fire detector

5 output line 6 control device

7: communication line

Hereinafter, the present invention will be described in detail according to the presently presented embodiments.

The zone-blocking fire suppression system using the multi-wire output fire detector and the foaming agent according to the present invention has a concrete structure to jointly accommodate underground buried materials such as electricity, gas, water, communication, and sewerage as shown in FIG. In the underground co-holes to be installed underground in the furnace, the underground co-holes (1) are divided into each zone (2) in units of 30 to 300 m, and the foaming agent is sprayed on the boundary of the divided zone (2), respectively. Fire extinguishing system (3) is installed, and fire detectors (4) for outputting detection signals to each saturation system (2) are provided in the divided zone (2) unit, respectively, as shown in FIG. A plurality of output lines (5) from 4) are connected to each of the saturation system (3) to perform the operation of blocking only the necessary area (2), or between the fire detector (4) and the saturation system (3) The control device 6 via the control device 6 in the By connecting a plurality of control communication lines (7) to each of the saturation system (3) to be configured to perform the operation to block only the required area (2), the fire detector (4) is composed of smoke sensors Although this is preferable, a temperature sensor may be applied if necessary.

At this time, the saturation system (3) is a foaming agent (21) to 0.6 ~ 0.8% of the total space based on the volume disclosed in the Utility Model Registration Application No. 2002-21158, the applicant of the present application, as shown in FIG. Is filled and the remaining space is filled with the drug storage tank 20 is filled with nitrogen gas 22 having a pressure of 30 ~ 40kg / ㎠, and the same size as the drug storage tank (20) Rather than one end of the water storage tank 30 is filled with 99 times the amount of water 31 on the basis of weight, and the upper end of the water storage tank 30 and adjacent to the upper end of the drug storage tank 20 The intermediate part is connected and the other end is installed in the middle of the transfer pipe 40 connected to the drug injection head 14 and the upper transfer pipe connecting portion of the drug storage tank 20 and opened according to the detection signal of the fire detector 4. The foaming agent 21 is moved and mixed inside the water storage tank 30 by the pressure of the nitrogen gas 22. Between the first solenoid valve 50 and the drug storage tank side connection portion of the transfer pipe 40 and the drug injection head connection portion is installed in close proximity to the drug storage tank side connection portion and the detection signal of the fire detector (4) The second solenoid valve is opened later than the first solenoid valve 50 so that the mixed water 31 and the foaming agent 21 are injected through the chemical injection head 14 by nitrogen gas 22. Although it is preferable to configure the fire detector interlocking local emission type firefighting system in the underground co-hole consisting of (60), the general fire-fighting system may be modified and applied to the underground co-hole.

The zone-blocking fire suppression system using the multi-wire output fire detector and the foaming agent according to the present invention configured as described above functions as follows.

First, when a fire occurs in the underground co-operation zone (1), a fire occurrence may be detected through a fire detector (4), in which the fire detector (4) each fired through the plurality of output lines (5) ) Or outputs a detection signal to the control device 6 and outputs the detection signal to each of the saturation system 3 from the control device 6 via a plurality of control communication lines 7.

The underground common pit (1) according to the present invention is divided into 30-300m units and is provided with the saturation system (3) at the boundary of each zone (2), respectively, and according to the input fire detection signal, It is possible to extinguish the fire by spraying the fire, and since the saturation system (3) is concentrated at the boundary of each zone (2), the zone where the fire occurred (2) is first isolated from the other zone (2). Flames can be prevented from spreading to other zones, and the blocking of these flames can eventually extinguish fires over time.

At this time, the saturation system (3) to be applied to the present invention is a water solution containing a mixture of water and foaming agent in a constant ratio is foamed by air so that the aggregate of fine bubbles block the surface of the combusted effect of containing and containing moisture By suppressing fire by cooling effect, it is excellent for extinguishing fires classified as oil fires in case of fire, such as power holes in underground co-operation zone (1), and can cope with oil fires as well as general fires smoothly. Since the fire extinguishing system 3 is interlocked with the fire extinguishing system 3, the fire extinguishing system 3 can be operated at the same time as the fire is generated, thereby greatly improving the initial extinguishing performance.

Of course, if a fire detector 4 and a fire extinguishing system 3 are provided at a narrow interval in the underground cavity 1, the fire detector 4 and the fire extinguishing system 3 may be effective. Because it is composed of devices, this can also be a cause of fire and its cost is too high to be inefficient.

Therefore, if the fire suppression system according to the present invention is applied, the electrical devices that cause the fire are disposed to a minimum and are safe. When a fire occurs in the underground common hole 1, the radio waves to other areas 2 are quickly cut off. It will be able to prevent the spread to large fire in advance.

In addition, the most common causes of fire in underground co-operation holes (1) are fires caused by short circuits or sparks between cables, and short circuits or sparks between these cables occur mainly at the cross section of the cable and at the connection part of the cable. The location of the saturation system will be more effective, and the fire protection system along with the fire suppression system will provide the perfect zoning effect.

As described above, the present invention divides the underground cavity into predetermined intervals, installs a fire extinguishing system using foaming chemicals at the boundary of each zone, and sends a fire detection signal to each fire extinguishing system. Since each fire zone is installed in each zone, the fire detector and the fire extinguishing system can be linked to improve the initial fire extinguishing performance, and the fire extinguishing system is formed at the boundary of the fire zone so that the fire does not spread to other areas and eventually extinguish the fire. It is possible to prevent large fires in advance, and it is very useful to extinguish fire by suffocating effect and cooling effect regardless of fire or oil fire by fire saturation system.

Claims (3)

In the underground common pit (1) installed in the basement with a concrete structure so as to jointly accommodate the underground buried materials such as electricity, gas, water, communication, sewerage, The underground cavity 1 is divided into each zone 2 in units of 30 to 300 m, and a saturation system 3 for spraying the gunpowder agent at the boundary of the divided zone 2 is installed. A multi-output fire detector and a zone-blocking underground co-fire using a fire extinguishing agent, characterized in that each of the divided zone unit has a fire detector (4) for outputting a detection signal to each of the saturation system (3). Suppression system. The method of claim 1, A multi-output fire detector and fire suppression system using a multi-line output fire detector and a fire extinguishing agent, characterized in that a plurality of output lines (5) from the fire detector (4) is connected to each of the saturation system (3), respectively. . The method of claim 1, The control device 6 is interposed between the fire detector 4 and each of the saturation systems 3, and a plurality of control communication lines 7 are connected to each of the saturation systems 3 from the control device 6. Multi-output fire detectors and fire suppression systems for zone-blocking underground co-operation using foamed gunpowder, characterized in that each connected to.