KR100741032B1 - Tunnel fire suppression spray nozzle - Google Patents

Abstract

A spray nozzle for extinguishing tunnel fire is provided to prevent smoke and fire from being diffused by minimizing oxygen supply toward a firing point of the fire. The spray nozzle includes a body(100), an injection port(200), and a protection cap(300). The body has an input hole(110) passing through a central portion thereof and three output holes formed on a long range installing surface(121a), a short range installing surface(121b), and a near range installing surface(121c) which are formed on the body at different angles with each other. The injection port consists of a long range injection nozzle(210), a short range injection nozzle(220), and a near range injection nozzle(230) for spraying extinguishant of constant pressure supplied through a discharge port(122). The protection cap is slidably engaged to the outer peripheral surface of the body.

Description

Tunnel fire suppression spray nozzle

1 is a graph showing the temperature changed by the heat emission to the neighboring distance based on the fire source in the tunnel fire.

Figure 2 is a graph showing the distribution of the water film sprayed by the experiment spray nozzle for extinguishing tunnel of the present invention.

Figure 3a, b is a graph showing a temperature drop in the process of extinguishing a fire that generated a simulated fire in the tunnel through the tunnel nozzle for extinguishing the tunnel of the present invention.

Figure 4 is a graph showing the temperature drop of the smoke gas by the experiment in the three-lane tunnel of the fire tunnel through the spray nozzle for extinguishing the tunnel of the present invention.

Figure 5 is an exploded perspective view showing a spray nozzle for tunnel fire extinguishing of the present invention.

Figure 6a, b is a perspective view showing the operating state of the spray nozzle for the fire extinguishing of the present invention.

Figure 7a, b is a cross-sectional view of the operating state of the spray nozzle for the fire extinguishing of the present invention.

Figure 8 is a front sectional view showing a spray nozzle for tunnel fire extinguishing of the present invention.

Explanation of symbols on the main parts of the drawings
10: water spray nozzle 100: body
110: inlet hole 120: slide wall
121: seating surface 121a: remote seating surface
121b: Short-term seating surface 121c: Near-field seating surface
122: discharge hole 123: sealing member
130: pipe connection 140: flange
200: injection hole 210: long-distance protection injection hole
220: near jet 215: jet tip
215a: angle piece 216: spray tip
216a: expansion hole 230: near-distance nozzle
231: Vortex 231a: inclined tip
231b: AC hole 232: Injection hole
300: protective cap 310: return means
311: driving pole 311a: pressure ball
311b: partition 320: elastic member

330: fastening means

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The present invention relates to a spray nozzle for extinguishing a tunnel, and more particularly, to allow the spray water to be sprayed by dividing the area of the road in the form of a water film into the passage of the tunnel. The present invention relates to a spray nozzle for tunnel fire extinguishing, which blocks a space while partitioning into a water film to prevent the spread of flame and toxic gases.

As a fire extinguishing facility that can be used in the event of a fire in a road tunnel, indoor fire hydrants or a connected water pipe facility are typical.

In a different structure, various fire extinguishing devices such as sprinkler, which detects a fire with a sensor and sprays water automatically or manually, are spread or installed.

In this way, the fire-fighting equipment using the fireman is provided with a nozzle, a spray, or the like in a predetermined shape, particle size, speed, and the like, and the fireman may be sprayed in various forms.

On the other hand, the conventional fire extinguishing equipment used in tunnels and the like has a fire extinguishing function that can directly extinguish by spraying droplets at the point where a fire occurs by operating a water spray nozzle only in a section where a fire is detected, and large on the ceiling of the tunnel. By installing a ventilation fan, a facility is installed to exhaust smoke and heat generated by a fire to the outside.

Recently, when the above-mentioned fire extinguishing equipment is applied in a state where the construction of a long tunnel is active, there is a problem that the fire extinguishing function in a long tunnel is significantly reduced because it has only a simple fire extinguishing function and an exhaust function.

That is, when a fire occurs in the vehicle inside the tunnel, as shown in Table 1 below, the heat release rate generated in the vehicle is as follows.

             Type of vehicle    Heat release rate (HRR)                Compact car                  5 MW                truck               20 ~ 30 MW

As shown in Table 1, the high temperature of flames and toxic gases, which are the rate of heat release from the vehicle, increases the fire jump from the fire vehicle to the subsequent vehicle, resulting in widespread fire spread, causing a fatal and fatal accident. You can do it.

In addition, as shown in Figure 1, when looking at the temperature of the fire generated according to the type of each vehicle and the fire distance according to the temperature emission from the source of the fire, if there is a fire of the vehicle inside the tunnel without special assistance means It can be seen that the hot smoke spreads from 100m to 150m in such a way that it can not even access the flower garden.

In light of the distance and heat release rate of the flower garden, when a fire breaks out in a passenger car, the fire transition time with a subsequent vehicle is within 10 to 15 minutes after ignition, and in the case of trucks, the fire transition takes place within 20 to 30 minutes after ignition. Subsequent stops entering the interior indicate that the fire spreads fatally.

Furthermore, the spread of toxic combustion gases from fires inside tunnels, the spread of high-temperature smoke (radiation and convection heat), the restriction of visibility, the lack of evacuation routes, the evacuation system and the lack of warning signs and fire hazard zones. Passive response and panic of passengers in the city caused many problems that could cause serious disasters caused by fire.

Korean Utility Model Application No. 10-2000-51197 proposed to solve this problem is a double spray nozzle (1) and water injection angle control nozzle (10) directly to the supply pipe 17 and the distribution pipe 18 for supplying the extinguishing water (10) ) Is installed at an angle of 20 degrees and 100 degrees to form a water film inside the tunnel and to partition the space at the point of ignition to cut off oxygen, aiming for early fire suppression.

However, the tunnel fire spray head according to the prior art is the extinguishing water injected from the water injection angle control nozzle through the injection hole is converted into the injection angle by the adjusting piece, but in the state already discharged from the inlet in front of the inlet without a separate guide means Extinguishing water hits a control piece that is bent at a predetermined angle to be spaced apart, and the spraying angle is adjusted. There is a problem in that the water droplets are not formed evenly due to the occurrence of spreading of the extinguishing water due to the frictional force and the impact force.

As such, when the droplet size of the water film is not uniform, the differential droplet size of the extinguishing water sprayed when the flame is generated is sprayed in an irregular state.

In particular, when the size of the fine particles of the sprayed droplets is large, the air gap between the fine particles of the water film becomes large, which makes it difficult to partition the space of the fire space, so that the oxygen supply is not blocked, and the early suppression of fire does not proceed smoothly. There was a problem that caused diffusion.

In addition, when the droplet size of the water film is small, the air gap between the finely divided particles is dense, but when the droplet size is in the atomized state, there is a problem that the fire extinguishing effect is reduced by vaporization by the fire source.

In addition, there is a problem that it is difficult to arbitrarily change the set angle of the adjusting piece that is screwed to the injection pipe fixed by the nut ring, can not properly cope with the road width of the various tunnels.

 In addition, when the nozzle is exposed to the outside for a long time in the tunnel, dust generated by the exhaust gas of the vehicle is adsorbed to the inlet of the nozzle, which causes the inlet of the nozzle to be clogged. Problems have arisen, and the maintenance work of the nozzles need to be paid special attention so as not to cause such problems, there was a problem that requires a large number of people and costs through regular maintenance work.

Therefore, the main object of the present invention is to equalize the differential droplet size of the water film that partitions the space by the water curtain method of the inner passage of the tunnel, and to allow the particles of the differential water to form a dense water film with air gaps to ignite the fire. It is to prevent the spread of smoke and fire by minimizing the oxygen supply to the fire by blocking the space.

In addition, another object of the present invention is to install the spray distance and spray type of the fire extinguishing water to the body of the road width, such as long-distance protective spray, close-up spray, near-distant injection sphere to be applicable to the road width of various tunnels To achieve optimal water spraying.

In addition, another object of the present invention to automatically open and close the protective cap in the body equipped with the injection port by the supply pressure of the extinguishing water to allow the injection port to be exposed or concealed to the outside by the fume fumes of the vehicle in the tunnel It is to prevent the inlet of the injection port to be blocked.

In order to achieve the above object, the spray nozzle for tunnel fire extinguishing of the present invention penetrates the inlet hole in the inner center to receive the extinguishing water provided at a predetermined pressure from the outside, and the outer periphery is remotely seated by the spraying range of the extinguishing water. A body formed by dividing the discharge hole in communication with the inlet hole by forming the surface, the near seating surface, and the near seating surface at different angles to the seating surface; Combining near-distance jets, constant pressure extinguishing water supplied through discharge holes is guided into the long-distance protection jets, short-range jets, and near-distant jets, and subdivided into fine-droplet droplet sizes by the angles colliding therein. Water jets are sprayed by dividing the spraying area into the spraying zone, and the outer periphery of the body Ding possibly coupled, and wherein the combined presented through the inflow hole in which the return means mounted inside the protective cap is configured that by the supply pressure of the sliding digestion to expose or cover the injection hole to the outside from the body.
According to the present invention, the body is spaced apart so as to correspond to a predetermined interval between the slide wall coupled to the outer periphery of the sealing member and to form a seating surface coupled to the injection hole in the space therebetween at different angles, the pipe on the bottom of the slide wall Forming the connecting portion to be mounted in the tunnel and the upper surface is formed to protrude a flange formed to extend the inlet hole is characterized in that configured to enable the coupling with the protective cap.
According to the present invention, the distant protective spray sphere is coupled to the spray tip formed with an angle piece for determining the spray angle of the digestion water on the remote seating surface of the body and to determine the spray width of the digestive water to be in close contact with the bottom surface of the angle piece Combine the spray tip that formed the opening, but the diameter of the discharge hole is large, while the angle pieces are gently bent based on the distant seating surface, and the extension of the expansion hole is narrowed, and the height of the expansion hole is increased to increase the amount of fire extinguishing. It is characterized in that it is configured to spray the extinguishing water to a long distance so that the water is sprayed into a narrow expansion hole.
According to the present invention, the short-range injection hole is coupled to the injection tip formed with an angle piece to determine the spray angle of the digestive water to the near seat surface of the body and the expansion hole for determining the spray width of the digestive water to be in close contact with the bottom surface of the angle piece The spray tip combined with the spray tip is formed, but the diameter of the discharge hole is made smaller than the discharge hole of the distant protective spray side, and the angle piece is formed with the angle upward relative to the distant protective spray sphere and the enlargement range of the expansion hole is enlarged. By lowering the height of the expansion hole, it is possible to spray the fire extinguishing water to a short distance by spraying a smaller amount of fire extinguishing water than the distant protection spray.
According to the present invention, the close distance injection port is coupled to the close distance seating surface of the body, but forms a multi-stage injection hole therein, round the injection hole inlet, and equipped with a vortex piece inside the injection hole to extinguish the water into the vortex Characterized in that configured to be injected.
According to the present invention, the vortex piece is configured to cross the pair of inclined tip symmetrically and form alternating alternating holes in the center thereof so that the extinguishing water can be injected into the vortex while passing the inclined tip and the alternating hole It is characterized by.
According to the present invention, the return means is coupled to the inlet hole of the body through the driving pole and then fixed to one side of the partition and the protective cap partitioning the pressure space inside the driving pole as a fastening means and the outside of the driving pole It is characterized in that the elastic member is inserted in the compressed state between the periphery and the end of the inlet hole so as to expose and conceal the injection hole to the outside by sliding the protective cap in the body depending on the presence or absence of supply pressure of the extinguishing water.
According to the present invention, the extinguishing water is discharged at a discharge pressure of 3.5 kg / cm 2 through the water spray nozzle, so that the extinguishing water can be sprayed at a flow distribution of 5 to 7 l / min.
According to the invention, the total flow rate of the digestion water sprayed with the water spray nozzle is characterized in that consisting of 250 ~ 310ℓ / min.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

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First, in the drawings, the same components or parts are to be noted that the same reference numerals as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

Figure 2 is a graph showing the distribution of the water film sprayed by the experiment of the tunnel fire spray nozzle of the present invention, Figure 3a, b is a fire extinguishing fire that generated a simulated fire in the tunnel through the tunnel fire spray nozzle of the present invention Figure 4 is a graph showing the temperature decrease during the process, Figure 4 is a graph showing the temperature reduction of the smoke gas by the experiment in the three-lane tunnel of the fire tunnel through the tunnel fire spray nozzle of the present invention, Figure 5 is a present invention Figure 6a, b is an exploded perspective view showing a tunnel fire spray nozzle of the present invention, Figure 6a, b is a perspective view showing an operating state of the spray nozzle for the fire extinguishing of the present invention, Figure 7a, b is a cross-sectional view of the operating state of the spray nozzle for the tunnel fire of the present invention 8 is a front sectional view showing a spray nozzle for tunnel fire extinguishing according to the present invention.

First, as shown in Figures 2 to 8, the tunnel nozzle for the fire extinguishing of the present invention is divided into the body 100 and the body 100 to branch by receiving the extinguishing water is divided into a spray range for each zone Consists of the injection port 200 and the protective cap 300 for exposing or hiding the injection port 200 to the outside by sliding movement in the body 100.
The body 100 penetrates the inlet hole 110 in the inner center to receive the extinguishing water provided at a predetermined pressure from the outside, and the outer periphery has a remote seating surface 121a for the spraying range of the extinguishing water. The surface 121b and the close distance seating surface 121c are formed at different angles to branch the discharge hole 122 communicating with the inlet hole 110 to the seating surfaces 121a, 121b and 121c, respectively.
Such, the body 100 is spaced apart so as to correspond to the slide wall 120 coupled to the outer periphery of the sealing member 123 at a predetermined interval and different seating surface 121 is coupled to the injection hole 200 in the space therebetween Formed at an angle, the lower surface of the slide wall 120 to form a pipe connecting portion 130 to be mounted in the tunnel and the upper surface formed to protrude a flange 140 formed to extend the inlet hole 110 on the protective cap Allow coupling with 300.
In addition, the injection hole 200 is coupled to the mounting surface (121a, 121b, 121c) of the body 100 by the remote protection injection sphere 210, the short-range injection hole 220, the near-distance injection hole 230, each having a different spray angle Fire extinguishing water of a constant pressure supplied through the discharge hole 122 is guided into the remote protective injection port 210, the short-range injection port 220, the near-distance injection port 230 to the size of the differential liquid droplets by the angle collided from the inside It is subdivided so that a dense air gap can be sprayed by the spraying area.
The long-range spray nozzle 210, the short-range injection port 220, the near-field injection port 230 is installed on one side of the tunnel to partition the spray area of the fire water according to the road width to partition the water source space and the external space To form.
The remote protective injection sphere 210 is coupled to the injection tip 215 formed with an angle piece 215a for determining the spray angle of the digestion water to the remote seating surface 121a of the body 100 and the angle piece 215a of The spray tip 216 is combined to form the expansion hole (216a) to determine the spray width of the digestive water to be in close contact with the bottom surface, while the diameter of the discharge hole 122 is formed large while the angle piece (215a) is a remote seating surface ( 121a) by bending gently and forming a narrow range of extension hole 216a while increasing the height of extension hole 216a so that a large amount of extinguishing water is sprayed into narrow extension hole 216a. Allow extinguishing water to be sprayed.
In addition, the near-injection nozzle 220 combines the injection tip 215 formed with the angle piece 215a for determining the spray angle of the digestion water to the near seating surface (121b) of the body 100 and of the angle piece (215a) Combining the spray tip 216 formed the expansion hole (216a) to determine the spray width of the extinguishing water to be in close contact with the bottom surface, the diameter of the discharge hole 122 than the discharge hole 122 side of the remote protection injection sphere (210) While forming small, the angle piece 215a is formed at an angle higher than that of the distant protective injection sphere 210 with respect to the near seating surface 121b, and the height of the extension hole 216a is increased while increasing the extension range of the extension hole 216a. By lowering the amount of fire extinguishing water in the spraying range of a shorter width than the remote protection injection sphere 210 to be able to spray the fire extinguishing water to a short distance.
Further, the near distance injection port 230 is coupled to the near distance seating surface (121c) of the body 100 to form a multi-stage injection hole 232 therein and round the injection hole 232 inlet and the injection hole 232 Equipped with a vortex piece 231 inside the) to allow the extinguishing water is injected into the vortex.
The vortex piece 231 crosses the pair of inclined tips 231a symmetrically and forms alternating alternating holes 231b in the center thereof so that the extinguishing water supplied passes through the inclined tips 231a and the alternating holes 231b. Allow the water to spray into the vortex.
In addition, the injection hole 200 is coupled to enable various modifications to the injection angle of the angle piece 215a coupled to the spray tip 216 to adjust the spray width of the digestive water to match the road width of the tunnel.
In addition, the return means 310 is coupled to the inlet hole 110 of the body 100 so as to penetrate the driving pole 311, partition wall 311b partitioning the pressure space 311a in the interior of the driving pole 311 ) And one side of the protective cap 300 is fastened by the fastening means 330 and the elastic member 320 is inserted into the compressed state between the outer circumference of the driving pole 311 and the end of the inlet hole 110 in a fire state. By sliding the protective cap 300 in the body 100 in accordance with the presence or absence of supply pressure of the extinguishing water so that the injection port 200 can be exposed and concealed to the outside.
In addition, the protective cap 300 is slidably coupled to the outer periphery of the body 100 and coupled to the return means 310 mounted therein so as to penetrate through the inlet hole 110 by the supply pressure of the digestive water ( Sliding at 100) allows the injection hole 200 to be exposed or concealed to the outside.
Referring to the operation and the embodiment of the spray nozzle for tunnel fire extinguishing of the present invention constituted as follows.
First, a fire breaks out inside the tunnel, an evacuation alarm is issued, and a fire pump (unsigned) is activated.
Here, the pressure hole 311a of the driving pole 311 located at the end of the inlet hole 110 of the body 100 by supplying the extinguishing water to the water spray nozzle 10 in the tunnel by the injection pressure provided by the fire pump. After the extinguishing water is introduced into the), the driving pole 311 compresses the elastic member 320 by the supply pressure of the extinguishing water to move forward of the inlet hole 110.
At this time, the protective cap 300 is integrated with the driving pole 311 to move forward along the slide wall 120 to expose the plurality of injection holes 200 mounted on the seating surface 121 to the outside.
When the protective cap 300 is opened by the supply pressure of the extinguishing water, the extinguishing water introduced into the inlet hole 110 is branched into each of the outlet holes 122 branched to extinguish the extinguishing water to the outside through the injection hole 200. Spray.
At this time, the digestion water is passed through the discharge hole 122 having a small diameter, the pressure is lowered by the outlet of the discharge hole 122 having a small cross-section, the flow rate is increased.
Especially. By forming a different diameter of the discharge hole 122 so that the road width can be easily applied to different tunnels, the flow rate of the extinguishing water can be freely adjusted. Digestion water can be sprayed as far as desired, divided into the remote zones.
In addition, the extinguishing water given the flow rate in the discharge hole 122 hits the injection tip 215 angle piece 215a of the near-field injection sphere 220 and the remote protection injection sphere 210, the spray angle is determined while the spray tip 216 It is guided and expanded by the expansion hole 216a of the extinguishing water is sprayed in the form of water film to the outside.
At this time, the expansion hole 216a is adjustable in the width and height and size of the tunnel by varying the spray width of the fire extinguishing water and the derivative water droplet size of the water film according to the height, width and expansion angle of the inlet in the cross-sectional shape of the inlet. It is possible by only deformation of the shape of the expansion hole 216a.
As such, the spray distance of the digestive water and the differential fraction size of the water film can be adjusted only by the difference in the diameter of the discharge hole and the spray angle of the angle piece 215a, the simple deformation and the size difference of the shape of the extension hole 216aX. Adapt to the width of the road.
In addition, the near-distance injection port 230 is guided by the inclined tip 231a of the vortex piece 231 supplied through the discharge hole 122 to be discharged to the injection hole 232 through the alternating current hole 231b. While changing the flow direction of the fluid so as to generate a vortex to spray in the form of whirlwind and at the same time sprayed along the end rounded to the multi-stage injection hole 232 formed in the inner periphery of the near-distance injection sphere 230 Is sprayed in a fan shape.
In this way, the water film sprayed through the injection hole 200 divides the roads of the tunnel into zones to form a water film, thereby partitioning the space where the flame is generated to prevent a fire transition to the rear vehicle when a fire breaks out in the tunnel. It lowers the temperature inside the tunnel and cuts off the oxygen supply to the fire source to maximize the fire extinguishing function.
Spray the water film inside the tunnel as described above, and after the extinguishing of the fire is completed, if the supply of extinguishing water is blocked to the water spray nozzle 10 side, the pressure of the extinguishing water is extinguished and the driving pole 311 by the restoring force of the elastic member 320. ) Is moved to the rear of the inlet hole 110 by sliding the protective cap 300 in cooperation with the driving pole 311 to the rear to conceal the injection hole 200 in the protective cap 300.
In this way, as the injection hole 200 can be selectively exposed and concealed to the outside depending on whether the extinguishing water is supplied, soot dust generated by the exhaust gas of the vehicle inside the tunnel is adsorbed to the inlet 200 and injected. By preventing the sealing of the inlet, it is possible to maintain the fire extinguishing system at optimum conditions at all times.
EXAMPLE
The configuration of the spray nozzle for tunnel fire extinguishing is presented in more detail.
First, each seating surface 121 formed in the body 100 of the water spray nozzle 10 to form a remote seating surface (121a) on the horizontal line on the outer periphery of the inlet hole 110, the remote seating surface (121a) The near mounting surface 121b on one side thereof is formed at a 35 ° angle, and the close distance mounting surface 121c is formed at a 90 ° angle to one side of the near mounting surface 121b.
Subsequently, the remote protective injection sphere 210 is coupled to the remote seating surface 121a, but the angle piece 215a of the spray tip 215 is set at an angle of 15 °, and the near-field injection sphere 220 is mounted on the near seating surface 121b. To form the angle piece 215a of the spray tip 215 at a 35 ° angle, combine the close distance spray hole 230 to the close distance seating surface 121c, but the angle piece 215a of the spray tip 215 It is configured to form a 90 ° angle.
The extinguishing water discharge pressure of the injection hole 200 configured as described above is 3.5 kg / ㎠, the flow distribution of each road lane zone of the extinguishing water is 5 ~ 7ℓ / min. ㎡, the total flow rate of the digestion water is 250 ~ 310L / min .
Here, as shown in the graph of FIG. 2, the spraying range is sprayed into the road to be partitioned, but the water film is sprayed to include the overlapping range.
That is, spraying the water film to the first lane of -1m to 5.5m in the rear, based on the position of the water spray nozzle 10 through the near-distance injection port 230, and two lanes of 3.5m ~ 9m through the short-range injection port 220 Spray the water film by spraying the water film into the three lanes of 6.8 ~ 11.5m through the long-distance protection injection port 210, and spraying the water film by setting the area range of each injection hole in the three-lane space of the tunnel, and the overlapping range of the water film is 2m. do.
In addition, FIG. 3a shows a simulated fire in a full fan (1m * 1m) containing 40 liters of ethanol in the tunnel and then detects the fire through the growth phase of the fire at the time of ignition. It can be seen that the temperature is maintained below ℃ ℃ to significantly reduce the temperature inside the tunnel after ignition to prevent fire transition and to prevent the spread of fire zone.
In addition, Fig. 3b is a ignition smoke gas for each time period to start the water spray by detecting the fire through the growth period of the fire at the time of ignition after generating a simulated fire on a vehicle equipped with gasoline 5ℓ while providing a maximum wind speed 6m / s inside the tunnel It shows that the temperature of Udi is below 40 ℃, and it is possible to drastically lower the temperature inside the tunnel after ignition so as to prevent fire transition to subsequent vehicles while preventing fire spreading.
In addition, as shown in Figure 4, by showing the temperature decrease of the smoke gas compared to the injection flow rate, it can be seen that the temperature is significantly reduced while the spray of the digestive water is made through the water spray nozzle (10).
Through the above experiments, the performance of the water spray nozzle 10 is proved to be the size of the differential water droplets in the tunnel 150 ~ 1000㎛ size of the remote protective injection sphere 210, the near-field injection sphere 220, the near-field injection sphere (230) By dividing the sprayed water into a water film form by dividing each spraying zone into), it can be seen that it is excellent in preventing the spreading and toxic gas diffusion and reducing the temperature.
In particular, the flow distribution of 5 ~ 7ℓ / min. ㎡ per square meter of the tunnel road surface to prevent the fire transition of the subsequent vehicle, it is possible to obtain a fire suppression effect by minimizing the oxygen ratio required for combustion. .

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As described above, the tunnel nozzle for the fire extinguishing of the present invention equalizes the differential droplet size of the water film which partitions the space in the tunnel by the water curtain method, and the differential water particles form a dense water film. It can be formed to block the ignition point of the fire completely with other spaces to minimize the supply of oxygen to the fire is effective to prevent the spread of smoke and fire.

In addition, the spray nozzle for the fire extinguishing of the present invention is equipped with a spray nozzle having a different injection distance in accordance with the road width to be suitable for the road width of the remote protective injection sphere, near-injection sphere, near distance injection sphere so that it can be applied to the road width of various tunnels It is effective to make the meninger spray.

In addition, the tunnel fire spray nozzle of the present invention by automatically supplying the protective cap in the body equipped with the injection port by the supply pressure of the extinguishing water to automatically return to the original position by allowing the tunnel to be exposed or concealed outside the tunnel There is an effect to prevent the inlet of the injection hole to be blocked by the fugitive smoke of my vehicle.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

Claims (9)

The inlet hole 110 penetrates the inner center to receive the extinguishing water provided at a predetermined pressure from the outside, and the outer periphery has a remote seating surface 121a, a near seating surface 121b, A body 100 having the near seating surface 121c formed at different angles and branching the outlet hole 122 communicating with the inlet hole 110 to the seating surfaces 121a, 121b and 121c, respectively, Through the discharge hole 122 by combining the remote protective injection sphere 210, the short-range injection port 220, the short-range injection port 230 with different spray angles to the seating surface (121a, 121b, 121c) of the body 100 Fire extinguishing water of a constant pressure supplied is guided into the long-distance protection injection port 210, the short-range injection port 220, the near-distance injection port 230 is subdivided into the fine water droplet size by the angle impingement from the inside is dense water film The injection hole 200 is sprayed by dividing the injection range zone, Slidingly coupled to the outer periphery of the body 100 and coupled to the return means 310 mounted therein so as to penetrate through the inlet hole 110 to slide in the body 100 by the supply pressure of the digestion water injection ( Tunnel extinguishing spray nozzle, characterized in that consisting of a protective cap 300 to expose or conceal the outside 200. The method of claim 1, The body 100 is spaced apart so as to correspond to the slide wall 120 coupled to the outer periphery of the sealing member 123 at a predetermined interval and the seating surface 121 to which the injection hole 200 is coupled to the space therebetween at different angles. On the lower surface of the slide wall 120 to form a pipe connecting portion 130 to be mounted in the tunnel and the upper surface to form a protruding flange 140 formed to extend the inlet hole 110 to the protective cap ( A spray nozzle for tunnel fire extinguishing, characterized in that configured to be combined with 300). The method of claim 1, The remote protective injection sphere 210 is coupled to the injection tip 215 formed with an angle piece 215a for determining the spray angle of the digestion water to the remote seating surface (121a) of the body 100 and the angle piece (215a) Combining the spray tip 216 to form the expansion hole (216a) to determine the spray width of the digestion water to be in close contact with the bottom surface of the discharge hole 122 while forming a larger diameter of the angle piece (215a) is a remote seating surface Bending gently on the basis of (121a) and narrowing the extension range of the extension hole (216a) while increasing the height of the extension hole (216a) to allow a large amount of extinguishing water to be sprayed into the narrow extension hole (216a). Tunnel extinguishing spray nozzles, characterized in that configured to spray the extinguishing water. The method of claim 1, The short-range injection port 220 is coupled to the near-mounted surface (121b) of the body 100, the injection tip 215 is formed with an angle piece 215a for determining the spray angle of the digestion water and of the angle piece (215a) Combining the spray tip 216 formed the expansion hole (216a) to determine the spray width of the extinguishing water to be in close contact with the bottom surface, the diameter of the discharge hole 122 than the discharge hole 122 side of the remote protection injection sphere (210) While forming small, the angle piece 215a is formed at an angle higher than that of the distant protective injection sphere 210 with respect to the near seating surface 121b, and the height of the extension hole 216a is increased while increasing the extension range of the extension hole 216a. Tunnel extinguishing spray nozzles, characterized in that configured to be sprayed to the near distance by lowering the amount of extinguishing water in the spraying range of a smaller width than the long-distance protective injection sphere (210). The method of claim 1, The close distance injection port 230 is coupled to the close distance seating surface (121c) of the body 100 to form a multi-stage injection hole 232 therein and round the injection hole 232 inlet and the injection hole 232 Tunnel extinguishing spray nozzle, characterized in that the digestion water is installed to the vortex by mounting the vortex piece 231 inside. The method of claim 5, The vortex piece 231 crosses the pair of inclined tips 231a symmetrically and forms alternating alternating holes 231b in the center thereof so that the extinguishing water supplied passes through the inclined tips 231a and the alternating holes 231b. Tunnel extinguishing spray nozzle, characterized in that configured so that the extinguishing water can be injected into the vortex. The method of claim 1, The return means 310 is coupled to the inlet hole 110 of the body 100 so as to penetrate the driving pole 311, partition wall 311b partitioning the pressure space 311a in the interior of the driving pole 311 And one side of the protective cap 300 is fastened by the fastening means 330, and the elastic member 320 is inserted into the compressed state between the outer circumference of the driving pole 311 and the end of the inflow hole 110 to extinguish fire in case of fire. Tunnel extinguishing spray nozzle, characterized in that configured to be exposed and concealed to the outside the injection hole 200 by sliding the protective cap 300 in the body 100 depending on the presence or absence of supply pressure. The method of claim 1, And extinguishing water at a discharge pressure of 3.5 kg / cm 2 through the water spray nozzle to spray extinguishing water at a flow distribution of 5 to 7 l / min. The method of claim 1, The total flow rate of the extinguishing water sprayed by the water spray nozzle is 250 ~ 310ℓ / min spray nozzle for extinguishing characterized in that made.

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