KR20090109317A - Fire extinguishing system with nitrogen gas curtain - Google Patents

Abstract

PURPOSE: A fire extinguishing system with a nitrogen gas curtain is provided to extinguish the fire at early by dropping the concentration of the oxygen in a short time to a non-combustible level. CONSTITUTION: A fire extinguishing system with a nitrogen gas curtain includes a curtain forming part(10), a direct spray part(20), a connection line(30), a supply line(40), and a sensor(50). The curtain forming part is installed according to an inner wall of a structure. The nitrogen gas curtain is formed on an adjacent part of the structure. The direct spray part is connected with the curtain forming part. The connection line supplies nitrogen gas to the curtain forming part. The supply line is connected with the connection line. The sensor senses the fire, and installed at a ceiling part of the structure.

Description

Fire extinguishing system with nitrogen gas curtain}

The present invention relates to a fire suppression system, and more particularly, by forming a pure nitrogen gas curtain in the structure when a fire occurs, it is possible to suppress the initial combustion of the fire by further reducing the oxygen concentration, as well as opening the fire. The present invention relates to a fire suppression system that can be applied to a structure and forms a nitrogen gas curtain that minimizes damage to the structure itself and damage to facilities and appliances in the structure during the fire suppression process.

Prevention of fires that cause large-scale human and physical damages is the first priority.

However, since it is practically impossible to prevent all fires that may occur due to various causes, there is a need for a fire suppression system that can minimize the damage caused by a fire by extinguishing the fire at an early stage.

Existing fire suppression systems include fire extinguishing systems, extinguishing agent injection systems, and extinguishing gas injection systems.

Among the existing fire extinguishing systems, fire extinguishing system is to extinguish fire by spraying fire extinguishing water with spray nozzle when fire occurs, and it has the advantage of being harmless to human body because of using water, but it is difficult to use depending on the object of phosphide. There was a problem that the high-pressure water sprayed during the fire suppression followed by damage to the structure itself and damage to the facilities and appliances located inside the structure.

In addition, the extinguishing agent injection system of the existing fire suppression system is to extinguish the fire by spraying the extinguishing agent with the injection nozzle in the event of a fire, has excellent extinguishing power and can be applied to a variety of ignition objects, but the extinguishing agent itself is expensive There was a problem that the cost burden occurred, there was a problem that toxic substances were generated in the process of fire extinguishing, causing human injury and air pollution, and it was difficult to apply due to the low extinguishing power in the open space. The extinguishing agent remains a problem that the structure itself is damaged or difficult to use facilities and appliances located inside the structure.

In addition, the extinguishing gas injection system of the existing fire extinguishing system is to extinguish the fire by injecting the inert digestion gas with the injection nozzle in the event of a fire, has excellent extinguishing power, harmless to the human body, easy to handle after extinguishing, The gas itself is very expensive, and there is a problem in that a cost burden occurs in operating, and in an open space, there is a problem in that the extinguishing power is greatly reduced. In particular, the extinguishing gas is injected at a high pressure, so the structure itself is damaged during the extinguishing process, or There was a problem with damage to facilities and equipment located in the.

For this reason, the industry can be installed and operated at low cost, and it is excellent in extinguishing power, harmless to the human body, applicable to both closed rooms and open spaces, and especially to prevent damage to facilities and equipment during fire suppression. The development of a new fire suppression system has been attempted, but has not been able to provide satisfactory results.

The present invention has been devised in view of the above circumstances, it is possible to install and operate at a low cost, excellent extinguishing power, harmless to the human body, and can be applied to structures that maintain an open state, such as forbidden city and cultural properties, In particular, it is an object of the present invention to provide a fire suppression system for forming a nitrogen gas curtain to minimize damage to the structure itself and the equipment and equipment located in the structure during the fire suppression process.

Fire suppression system for forming a nitrogen gas curtain according to the present invention for achieving the above object,

A curtain forming unit installed along an upper end of an inner wall of the structure and provided with a curtain diffuser on an outer surface of the tube body having a predetermined interval at a bottom thereof to form a nitrogen gas curtain adjacent to the inner wall of the structure;

A direct injection unit which is connected to the curtain forming unit and is installed to cross the ceiling part of the structure with a pipe formed with injection holes at regular intervals on the bottom and both sides thereof to inject nitrogen gas into the interior space of the structure;

At least two points connected to the curtain forming unit and connected to supply nitrogen gas to the curtain forming unit;

It is connected to the connection line, a plurality of inlets are provided to enable parallel connection of one or more nitrogen gas container filled with pure nitrogen gas, and decompressing the supply pressure of the final discharged nitrogen gas below the filling pressure of the nitrogen gas container A regulator is provided to control, a vaporizer for vaporizing liquid nitrogen stored in a liquid nitrogen storage container separate from the nitrogen gas container, and a double open / close valve capable of manual opening and closing is provided with a connection line. Supply line for supplying;

A sensor installed in the ceiling inside the structure to detect a fire;

A controller connected to the supply line and a sensor to open the supply line by a sensor signal when a fire occurs, and to transmit a sound warning or an image warning to the outside through a warning means;

It is characterized in that it is made of an operation switch connected to the controller to operate the controller irrespective of the sensor signal.

Fire suppression system for forming a nitrogen gas curtain according to the present invention,

The use of pure nitrogen gas that can be provided at a low cost as a means for extinguishing the fire will reduce the cost burden of installation and operation,

In the event of a fire, pure nitrogen gas is injected into the interior space of the structure through the direct injection part in the state of forming a pure nitrogen gas curtain adjacent to the inner wall of the structure through the curtain forming part. Even within a short time, the internal oxygen concentration drops to the level of no combustion, so the fire can be put out early.

Pure nitrogen gas injection from the curtain forming unit and the direct injection unit is performed at a relatively low pressure, thereby minimizing the damage of the structure itself and the damage of facilities and equipment located inside the structure during the fire suppression process.

Hereinafter, with reference to the accompanying drawings in more detail as follows.

1 is a schematic view for explaining the structure of a fire suppression system for forming a nitrogen gas curtain according to the present invention, Figure 2 is a perspective view showing the application of a fire suppression system for forming a nitrogen gas curtain according to the present invention, Figure 3 Is a cross-sectional view for explaining the structure of the curtain forming unit in the fire suppression system for forming a nitrogen gas curtain according to the present invention, Figure 4 is to explain the structure of the supply line in the fire suppression system for forming a nitrogen gas curtain according to the present invention 5 is a state diagram for explaining the fire suppression through the fire suppression system for forming a nitrogen gas curtain according to the present invention.

1 and 2, the fire suppression system A for forming a nitrogen gas curtain according to the present invention includes a curtain forming unit 10, a direct injection unit 20, a connection line 30, It consists of a supply line 40, a sensor 50, a controller 60, and an operation switch 70.

The curtain forming unit 10 is to form a nitrogen gas curtain adjacent to the inner wall of the structure 100, which is installed along the inner circumference of the inner wall of the structure 100, as shown in Figure 3 Curtain-shaped diffuser 12 is provided on the outer surface of the circular tube 11 formed with the outlet 11a at intervals.

In such a curtain forming portion 10, the tubular body 11 is preferably made of a metal in consideration of durability and heat resistance, the outlet 11a formed in the tubular body 11 so that a continuous curtain can be formed without a disconnection section. It is preferable to maintain the interval (up to 50 cm or less), the interval of the outlet 11a of the tube body 11 located on the side of the open portion in which the door or window is formed in the structure 100 is located in the other part that is not open ( It is preferable to maintain a more closely spaced interval than the outlet 11a interval of 11).

The direct injection unit 20 is for injecting nitrogen gas into the interior space of the structure 100, is connected to the curtain forming unit 10, the injection hole 21a is formed at regular intervals on the bottom and both sides The tubular body 21 is installed to cross the ceiling of the structure 100.

In the direct injection unit 20, the tubular body 21 is installed in the middle of the tubular body 11 of the curtain forming part 10 and is preferably made of metal in consideration of durability and heat resistance, and is formed in the tubular body 21. The injection hole 21a is preferably maintained at an interval (up to 50 cm or less) to allow the injection to be made over the entire internal space of the structure 100, and is continuously installed in the transverse direction according to the internal space area of the structure 100 It is preferable.

The connection line 30 is for supplying nitrogen gas to the curtain forming portion 10, the tip is divided into two or more branches at least two points are connected to the tube body 11 of the curtain forming portion 10.

Such a connection line 30 is preferably larger than that of the tube body 11 of the curtain forming unit 10 to prevent a sudden pressure drop in the curtain forming process, curtain forming unit 10 Except for the tip connected to the tubular body 11 of) is preferably buried in the ground to prevent breakage.

The supply line 40 is to supply nitrogen gas to the connection line 30, as shown in Figure 4, the front end is connected to the connection line 30 is installed, at least one nitrogen filled with pure nitrogen gas A plurality of inlets 42 are provided to enable parallel connection of the gas container 41, and the pressure is reduced so that the nitrogen gas supply pressure supplied from the nitrogen gas container 41 becomes less than or equal to the filling pressure of the nitrogen gas container 41. The regulator 43 is provided to control, the vaporizer 45 for the vaporization of the liquid nitrogen stored in the liquid nitrogen storage container 44 separate from the nitrogen gas container 41 is provided, the manual opening and closing is possible double The on-off valve 46 is provided.

In the supply line 40, when the nitrogen gas container 41 is connected to the inlet 42, the valve 41a of the nitrogen gas container 41 itself is connected in an open state, and the vaporizer 45 is liquid nitrogen. Since the filling pressure of the storage container 44 is close to the nitrogen gas supply pressure decompressed through the regulator 43, there is no need for depressurization, so that the pressure of the storage container 44 is installed at the previous position of the regulator 43 near the connection line 30. Among the on-off valves 46, the automatic open / close valves 46a are solenoid valves that open and close by an electronic signal.

The sensor 50 detects a fire in the structure 100 and transmits an electronic signal. The sensor 50 is installed in the ceiling inside the structure 100.

Such a sensor 50 is to follow a conventional fire detection method such as a heat detection method or a flame detection method, it is preferable that at least one is installed for accurate fire detection.

The controller 60 is for opening and closing the valve 46 of the supply line 40 by an electronic signal from the sensor 50, and the opening and closing valve of the sensor 50 and the supply line 40 through wiring. 46) In particular, it is connected to the automatic opening and closing valve 46a, and a warning means 61 for transmitting a sound warning and an image warning is provided.

Such a controller 60 is to open the supply line 40 by sending an electronic signal by the electronic signal input from the sensor 50 to open the automatic opening and closing valve 46a of the supply line 40, the warning means 61 is to work.

Here, the warning means 61 is composed of a speaker (61a) and the image screen (61b) to transmit an image warning through the display of the set warning phrase, such as "fire occurrence" along with the alarm and voice warning, warning means (61) Although illustrated as being embedded in the controller 60 itself, it may be provided to the outside by being connected to the controller 60 through wiring.

The operation switch 70 is to operate the controller 60 irrespective of the sensor 50 signal, and is connected to the controller 60 through wiring.

Referring to the fire suppression in the structure 100 through the fire suppression system (A) forming a nitrogen gas curtain according to the present invention as follows.

When a fire occurs in the structure 100 to which the fire suppression system A forming the nitrogen gas curtain according to the present invention is applied, one or more sensors 50 installed in the ceiling of the structure 100 detect this.

When the sensor 50 detects a fire, an electronic signal is transmitted. The electronic signal transmitted from the sensor 50 is transmitted to the controller 60 to operate the warning signal 61 and the supply line ( In order to transmit the electronic signal to open and close the valve 46 of the 40, in particular, the automatic opening and closing valve 46a to allow the surrounding people to evacuate by the operation of the warning means 46 and at the same time the opening of the supply line 40 Nitrogen gas is supplied from the nitrogen gas container 41 connected to the supply line 40 by the.

In the above process, the nitrogen gas supplied to the connection line 30 by opening and closing the valve 46 of the supply line 40 is set by the regulator 43 provided at the tip of the supply line 40. The pressure can be reduced to below the pressure charged in 41).

On the other hand, the nitrogen gas supplied from the supply line 40 is delivered to the inside of the tube 11 of the curtain forming portion 10 is installed along the upper end of the inner wall of the structure 100 via the connection line 30.

Nitrogen gas delivered to the inside of the tube body 11 of the curtain forming portion 10 via the connection line 30 is injected to the outside of the tube body 11 through the outlet (11a) formed at regular intervals on the bottom pipe body 11 It is sprayed at a relatively low pressure (7-15 kgf / ㎠) toward the bottom of the structure 100 via the curtain diffuser 12 provided on the outer surface to form a continuous nitrogen gas curtain adjacent to the inner wall of the structure 100 .

 In addition, the nitrogen gas supplied into the pipe body 11 of the curtain forming unit 10 through the connection line 30 forms a curtain adjacent to the inner wall of the structure 100 and at the same time, the structure directly through the spray unit 20. 100 is injected into the inner space.

Since the tubular body 21 of the direct injection unit 20 is connected to the tubular body 11 of the curtain forming unit 10, the nitrogen gas supplied to the curtain forming unit 10 flows into the tubular body 21 of the direct spray unit 20. Nitrogen gas supplied to the direct injection unit 20 is to be injected to the outside at a relatively low pressure (7-15kgf / ㎠) through the injection port 21a of the tubular body 21.

At this time, the injection holes 21a formed in the tubular body 21 of the direct injection unit 20 are formed on the bottom and both sides, so that the injection is made toward the bottom of the structure 100 as well as toward the ceiling of the structure 100. Since the injection may be made, the ceiling of the structure 100 is wrapped by nitrogen gas.

Through the above process, as shown in FIG. 5, a nitrogen gas curtain is formed adjacent to the inner wall of the structure 100 by the curtain forming unit 10, and at the same time, a direct injection unit 20 forms the interior of the structure 100. When the injection of nitrogen gas is made, even in an open structure, the oxygen concentration in the internal space drops to an uncombustible level, that is, an oxygen concentration of 10-12% within a short time, and thus no further combustion can be performed. When the fire is to be able to extinguish the fire directly, when the fire occurs outside the structure 100 it is possible to block the spread of fire into the structure.

At this time, since the nitrogen gas injected from the curtain forming unit 10 and the direct injection unit 20 for the fire suppression is injected at a relatively low pressure (7-15kgf / ㎠) and damage of the structure 100 itself in the fire suppression process It is possible to prevent damage to facilities and equipment inside the structure (100).

In the fire suppression process through the fire suppression system A, which forms the nitrogen gas curtain according to the present invention as described above, the controller 60 may operate even if it does not receive a signal from the sensor 50.

The operation switch 70 is connected to the controller 60, and the operation of the operation switch 70 opens and closes the supply line 40 through the controller 60, and the operation of the warning means 61 is a sensor 50 signal. It can be done regardless.

Such forced operation of the controller 60 by the operation switch 70 is preferably used in the case of not detecting the occurrence of a fire above the sensor 50 or in the case of the system A test operation.

In addition, the fire suppression system (A) forming the nitrogen gas curtain according to the present invention can use the nitrogen gas stored in the nitrogen gas container 41 as well as nitrogen generated from the liquid nitrogen stored in the liquid nitrogen storage container 44. Gas can be used.

Nitrogen gas supplied from the nitrogen gas container 41 connected to the supply line 40 is bound to be limited in the amount, if the fire occurs in the surroundings after the fire extinguishing inside the structure and additional fire extinguishing is required Since it may not be possible to extinguish fire with only nitrogen gas stored in the nitrogen gas container 41, the liquid nitrogen storage container 44 in which a large amount of liquid nitrogen is stored is connected to the vaporizer 45 provided in the supply line 40 in a large amount. It is possible to supply nitrogen gas continuously.

In addition, the fire suppression system (A) forming the nitrogen gas curtain according to the present invention is capable of manually operating the opening of the supply line (40).

The opening and closing valve 46 provided in the supply line 40 is provided with a double automatic opening and closing valve 46a and a manual opening and closing valve 46b, the inoperable state of the controller 60 or the automatic opening and closing valve ( In the inoperable state of 46a), the manual opening / closing valve 46b of the supply line 40 is forcibly opened so that nitrogen gas can be supplied to suppress the fire.

Since the present invention as described above is not limited to the above-described embodiments, it can be changed within the scope not departing from the gist of the present invention claimed in the claims, such changes are within the claims described.

1 is a schematic view for explaining the structure of a fire suppression system for forming a nitrogen gas curtain according to the present invention

Figure 2 is a perspective view showing the application of the fire suppression system for forming a nitrogen gas curtain according to the present invention

Figure 3 is a cross-sectional view for explaining the structure of the curtain forming unit in the fire suppression system for forming a nitrogen gas curtain according to the present invention

Figure 4 is a front view for explaining the structure of the supply line in the fire suppression system forming a nitrogen gas curtain according to the present invention

5 is a state diagram used for explaining the fire suppression through the fire suppression system to form a nitrogen gas curtain according to the present invention

<Explanation of symbols for the main parts of the drawings>

10: curtain forming portion 11: tube

11a: outlet 12: curtain diffuser

20: direct injection unit 21: tube

21a: injection hole 30: connection line

40: supply line 41: nitrogen gas container

41a: valve 42: inlet

43: regulator 44: liquid nitrogen storage container

45: carburetor 46: on-off valve

46a: Automatic open and close valve 46b: Manual open and close valve

50: sensor 60: controller

61: warning means 61a: speaker

61b: Video screen 70: Operation switch

100 Structure A: Fire Suppression System

Claims (5)

A curtain forming unit installed along an upper end of an inner wall of the structure and provided with a curtain diffuser on an outer surface of the tube body having a predetermined interval at a bottom thereof to form a nitrogen gas curtain adjacent to the inner wall of the structure; A direct injection unit which is connected to the curtain forming unit and is installed to cross the ceiling part of the structure with a pipe formed with injection holes at regular intervals on the bottom and both sides thereof to inject nitrogen gas into the interior space of the structure; At least two points connected to the curtain forming unit and connected to supply nitrogen gas to the curtain forming unit; It is connected to the connection line, a plurality of inlets are provided to enable parallel connection of one or more nitrogen gas container filled with pure nitrogen gas, and decompressing the supply pressure of the final discharged nitrogen gas below the filling pressure of the nitrogen gas container A regulator is provided to control, a vaporizer for vaporizing liquid nitrogen stored in a liquid nitrogen storage container separate from the nitrogen gas container, and a double open / close valve capable of manual opening and closing is provided with a connection line. Supply line for supplying; A sensor installed in the ceiling inside the structure to detect a fire; A controller connected to the supply line and a sensor to open the supply line by a sensor signal when a fire occurs, and to transmit a sound warning or an image warning to the outside through a warning means; Fire suppression system to form a nitrogen gas curtain, characterized in that the connection is installed to the controller made of an operation switch to operate the controller irrespective of the sensor signal. The method of claim 1, The curtain body of the curtain forming unit is to suppress the fire to form a nitrogen gas curtain, characterized in that to maintain a close interval compared to the outlet gap of the pipe located in other parts of the outlet opening is located on the open side of the structure to be formed system. The method of claim 1, Pipe body of the direct injection unit fire suppression system to form a nitrogen gas curtain, characterized in that the continuous installation in the transverse direction according to the area of the structure. The method of claim 1, The connecting line has a larger diameter than that of the curtain forming part, and the tip is divided into two or more branches and the fire suppression system for forming a nitrogen gas curtain, characterized in that connected to at least two points to the curtain forming part. The method of claim 1, The warning means provided in the controller is a speaker and a video screen, the speaker and the video screen is a fire suppression system for forming a nitrogen gas curtain, characterized in that provided in the outside or connected to the controller via a wiring.

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