WO2012108574A1

WO2012108574A1 - Water mist nozzle for firefighting

Info

Publication number: WO2012108574A1
Application number: PCT/KR2011/000978
Authority: WO
Inventors: 지태호; 전정규; 김영한
Original assignee: 탱크테크 주식회사
Priority date: 2011-02-10
Filing date: 2011-02-14
Publication date: 2012-08-16
Also published as: KR101035019B1

Abstract

The present invention relates to a water mist nozzle for firefighting. The water mist nozzle is maintained in a state in which the nozzle is filled with a fire-extinguishing fluid in order to quickly spray water mist at the outbreak of a fire, thereby quickly extinguishing the fire. Also, after the fire is extinguished, since a thermostatic valve and a valve-fixing member are reattached, the water mist nozzle may be reused without replacing the entire water mist nozzle.

Description

Fine spray nozzle for firefighting

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fine atomizing nozzle for fire suppression, and more particularly to a wet type fine atomizing nozzle filled with water from a pressurizing device to a nozzle.

In general, automatic fire extinguishing equipment that detects a fire immediately and injects a fire extinguishing agent is mainly designed to spray extinguishing water with a sprinkler (SPRINKLER) installed on the ceiling.

However, in the case of such sprinkler type automatic fire extinguishing equipment, the speed of extinguishing is slow compared to the amount of water consumed due to the large amount of sprayed water particles based on the principle of cooling suppression. Moreover, in the case of oil fires such as petroleum or diesel, the oil and water are separated, and thus, the burning oil cannot be properly digested. In addition, a large amount of water is injected, causing fire-related items to be damaged.

Gas fire extinguishing facilities (CO2, N2) require the evacuation of life and the closure of all ventilation paths before operation, which causes difficulties in the initial suppression of fires, and also has a high risk of safety accidents due to malfunctions. .

On the other hand, in an atomized water extinguishing system, as water particles vaporize due to heat of a fire source, the oxygen concentration around the combusted product is lowered due to the expansion of the volume, and the radiant heat emitted as a combustible material can be safely and quickly suppressed. Do. In addition, water can be sprayed in the form of a mist to extinguish with a small amount of water, to reduce the secondary damage caused by water, and to reduce the cost of construction and equipment management.

As an example of the prior art related to the atomized fire extinguishing facility capable of extinguishing efficient fires as described above, "Sungholm" of Finland was registered in Korea Patent No. 210033 (1999.04.22) and registered, There is a "Fire spray nozzle for firefighting" registered in Korea Utility Model No. 258499 (December 11, 2001), filed by the Korean Industrial Corporation.

By the way, since the conventional atomizing nozzle is manufactured in a dry type, it is difficult to quickly extinguish the fire because the fluid for fire is supplied from the pressurizing device to the nozzle when the fire occurs.

Accordingly, the present invention is to solve the problems of the prior art, and after maintaining the fluid filled state in the pipeline between the atomizing nozzle and the fluid pressurizing device, the fine powder to quickly spray the atomized water in case of fire It is an object to provide a dry nozzle.

It is another object of the present invention to provide a spray atomizing nozzle which can be reused by newly installing only a thermo bulb, a bulb fixing member, and a protective cover without replacing the entire nozzle after performing a fire suppression action.

The fine sprayed nozzle of the present invention for achieving the above object, the nozzle body is formed with a flow path space that is opened or shielded by the nozzle shaft for supplying and blocking the extinguishing fluid; and a rectifying pipe formed adjacent to the flow path space; And A nozzle shaft inserted into and coupled to the rectifying pipe and the flow path space; and a stopper coupled to an end of the nozzle shaft opposite to the atomizing spray side to restrict movement of the nozzle shaft; and a spraying atomizing side of the nozzle shaft. A spray plate coupled to an end of the spray plate; and supporting both ends of the heat sensing body, respectively, and being coupled to each other to maintain a fixed state on both sides of the inner diameter of the atomizing spray side opening of the nozzle body. And a heat-sensing member fixing member which is separated from the nozzle body and is released from the nozzle body when the heat-sensitive body is broken. It is configured to hereinafter.

The nozzle body may further include a support wall that protrudes around an inner diameter to form the flow path space and divides an inner region of the nozzle body into the nozzle body and the spray plate accommodating part.

An inner diameter surface of the atomizing spray side opening of the nozzle body may be provided with a plurality of fixing grooves recessed along a circumference of the inner diameter or recessed at regular angle intervals.

Fixing protrusions inserted into the fixing grooves may be formed on a surface of the respective thermosensitive member fixing members facing the fixing grooves.

The nozzle shaft may include a shielding end portion having an outer diameter corresponding to the inner diameter of the flow path space and a moving end extending from the shielding end portion having an outer diameter smaller than the shielding end portion to open or shield the flow path space according to the movement of the nozzle shaft. have.

The fine atomizing nozzle may further include a protective cover having a lower protection part for protecting the thermal element, and an upper support part positioned between the thermal element fixing member and the spray plate to support the lower protection part. Can be.

The spray plate may be formed with a plurality of injection holes radially.

Alternatively, the spray plate may include a plurality of radially formed cutouts and a plurality of wings spaced apart from each other by a plurality of cutouts.

In addition, the spray plate may be provided in two or more overlapping the lower end of the nozzle shaft.

When the atomized nozzle is installed in the fire suppression area, the nozzle body may be used to maintain a state in which the extinguishing fluid is filled.

The present invention as described above maintains a state in which the fire water or the fire extinguishing fluid is always filled in the flow path between the atomizing nozzle and the pressurization device of the extinguishing fluid, so that a rapid fire suppression can be performed when a fire occurs.

In addition, after the fire is extinguished, the extinguishing fluid such as water or extinguishing fluid inside the nozzle body is discharged while the fire valve is closed to make the internal pressure the same as the atmospheric pressure, and then only the thermo bulb, the bulb fixing member, and the protective cover are newly installed. By reusing the atomized nozzles, the maintenance cost can be significantly reduced.

1 is an exploded perspective view of a fine powder spray nozzle 100 according to an embodiment of the present invention,

2 is a plan view of the nozzle body 1,

3 is a view showing a state in which the thermobulb 6 is fixed by the bulb fixing member 5;

4 is a cross-sectional view of the fine powder spray nozzle 100 according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view of the fine powder spray nozzle 100a in which the spray plate 2 protrudes from the nozzle body 1 and sprays fine powder after the thermobulb is broken.

6 is a comparative view of the fine powder spray nozzle 100 when no fire occurs and the fine spray nozzle 100a with the spray plate 2 protruding after the fire has occurred.

7 is a view showing a state in which the spray plate 2 is coupled to the nozzle shaft 3 in two layers according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings showing an embodiment of the present invention will be described in detail the present invention.

1 is an exploded perspective view of the fine powder spray nozzle 100 according to an embodiment of the present invention, FIG. 2 is a plan view of the nozzle body 1, and FIG. 3 is a thermobulb 6 formed by the bulb fixing member 5. 4 is a cross-sectional view of the fine spray nozzle 100 according to the embodiment of the present invention.

As shown in FIGS. 1 to 4, the fine powder spray nozzle 100 includes a tubular nozzle body 1, a spray plate 2, a nozzle shaft 3, a rectifying pipe 4, and a bulb fixing member 5. And a thermobulb 6, a protective cover 7, and a stopper 9.

The nozzle body 1 has a support wall 13 for dividing the inner region into the nozzle body 1 'and the spray plate accommodating part 11 and forming a flow path space 16 (see FIG. 5) on the inner diameter of the tube. It protrudes and is formed in an open tube on both sides. The inner diameter surface of the spray plate accommodation portion 11 is formed with a fixed groove 12 formed of a plurality of grooves recessed along the circumference of the inner diameter or recessed at predetermined angular intervals. On the upper inner circumferential surface of the nozzle body (1) is formed a body female screw portion 17 that is screwed into the digestive pipe. The outer circumferential surface of the nozzle body (1) is the number of body screwed to the bracket (not shown) or plate (not shown) to seal the moxibustion between the fine water spray nozzle 100 and the ceiling surface coupled to the fire pipe and to be supported on the ceiling The threaded portion 15 is formed. A flat fixing surface 14 is formed on the outer circumferential surface of the nozzle body 1.

As shown in FIG. 4, the rectifying pipe 4 is inserted into and coupled to the upper portion of the support wall 13 in the nozzle body 1 ′. As shown in FIG. 2, the rectifying pipe 4 includes a nozzle shaft pipe 42 formed at a center thereof so that the moving part 34 of the nozzle shaft 3 is inserted into and coupled to the outer peripheral surface of the nozzle shaft pipe 42. Or a plurality of flow path tubes 41 forming a flow path through which a digestive fluid such as a digestive fluid is supplied. In the rectifying pipe 4 having the above-described configuration, the fluid supplied to the spray plate 2 by the plurality of flow pipes 41 is uniformly supplied to the entire region of the spray plate 2 when spraying fine water spray by fire suppression. Disperse the flow rate as much as possible.

The spray plate 2 has a plate shape such as a circle, a polygon, and the like, and a central hole 21 into which the spray plate coupling end 35 of the nozzle shaft 3 is inserted is formed at the center thereof, and the edge region is fixed in the spraying direction. It is formed into a lampshade bent to have an inclination. The spray plate 2 is also provided with a plurality of orifices 22 so as to have a predetermined angular interval at a position having a certain distance from the center hole 21.

The lower part of the spray plate 2 is screwed to the spray plate engaging end 35 of the nozzle shaft 3 which is inserted into the center hole 21 of the spray plate 2 to screw the spray plate 2 to the nozzle shaft 3. It is fixed to the spray plate coupling end 35 of the), and the space member 10 is provided so that the extinguishing fluid such as water, extinguishing agent, etc. sprayed through the injection hole 22 when the fire is extinguished and converted into a spray.

The nozzle shaft 3 is a rod-shaped shaft member, and an end portion at the side of the spray plate accommodating portion 11 has an outer diameter corresponding to the inner diameter of the flow path space 16, and a shielding end portion 32 having an O-ring (O) coupled to an outer circumferential surface thereof. The shielding portion 31 has a shielding inclined surface 33 whose outer diameter decreases from the shielding end portion 32 toward the upper direction, and is fixed in a predetermined vertical region so as to move up and down within the nozzle shaft pipe 42 of the rectifying pipe 4. It is comprised including the moving part 34 which has an outer diameter.

The space member 10, the spray plate 2, and the nozzle shaft 3 having the above-described configuration may be combined by welding or the like, or may be integrally manufactured by casting or lathe.

The bulb fixing member (5) consists of a pair to secure while wrapping both ends of the thermo bulb (thermo bulb) (6). Each bulb fixing member 5 is formed on the surface in contact with the inner diameter surface of the spray plate accommodating portion 11 of the upper fixing projections 52 inserted into the fixing groove 12 is formed. The bulb fixing members 5 having the above-described configuration are smaller than the outer diameter of the thermobulb 6 in one bulb fixing member 5 (the left bulb fixing member in FIG. 1) to facilitate the fixing of the thermobulb 6. A bulb insertion hole 51a having an inner diameter is formed, and the other bulb fixing member 5 (the right bulb fixing member in FIG. 1) is provided with a bulb fixing bolt 8 such as hexabolt to support the end of the thermobulb 6. The female threaded portion (51b) is screwed through may be formed through.

The bulb fixing members 5 having the above-described configuration have fixing grooves 52 formed on the nozzle body 1 in a state where the thermobulbs 6 are fixed while surrounding both ends of the thermobulb 6 as shown in FIG. 3. The thermobulb 6 is supported and fixed by the spray plate accommodating part 11 of the nozzle body 1 by being inserted into (12). The thermobulb 6 is applied with various known thermobulbs that are broken by heating. The thermobulb 1 may also be replaced by a fusible link that is broken by heat. The thermobulb 1 and the configuration that breaks when the temperature becomes above a predetermined temperature, such as a fusible link, are embodiments of the thermal element of the present invention. In addition, the bulb fixing member 5 is an embodiment of the thermal element fixing member of the present invention.

The protective cover 7 is located in the spray plate accommodating part 11 to support the space member 10 so that the space member 10 does not protrude downward, and the thermobulb 6 in the downward direction from the upper support 72. And a lower protection part 71 which protrudes and surrounds the thermobulb 6 to protect the thermobulb 6 from external shocks. Support grooves 73 are formed at positions of opposite sides of the upper support portion 72 opposite to each other so that the upper end portions of the bulb fixing members 5 may be inserted to support the protective cover 7. The lower protective part 71 is formed in an arch shape in FIG. 1, but may be formed in various shapes that may protect the thermobulb 6 from external impact such as a hemisphere, a polygonal sphere, and the like.

The stopper 9 is formed in a nut shape and screwed to the male screw portion 36 formed at the upper end of the nozzle shaft 3 to be fixedly coupled thereto. The stopper 9 is caught by the rectifier tube 4 when the thermobulb 6 is damaged and the spray plate 2 protrudes to the lower portion of the spray plate accommodating part 11 by the hydraulic pressure or the pressure of the extinguishing solution. The downward movement of (3) is restricted. The stopper 9 may be coupled to the upper end of the nozzle shaft 3 by various equal coupling methods, such as a pin coupling method and an O-ring coupling method, which can maintain a fixed coupling state with the nozzle shaft 3.

Next, the coupling relationship of each structure of the above-mentioned fine atomizing nozzle 100 is demonstrated.

As shown in FIG. 4, the spray plate engaging end 35 of the nozzle shaft 3 is inserted into the center hole 21 of the splitter plate 2, and then the space member 10 is screwed into the spray plate engaging end 35. By coupling the spray plate 2 and the space member 10 to the nozzle shaft (3).

The upper portion of the nozzle shaft 3 to which the space member 10 and the spray plate 2 are coupled is inserted below the nozzle shaft tube 42 of the rectifying tube 4 inside the nozzle body 1. Thereafter, the stopper 9 is inserted into the nozzle shaft pipe 42 and fixed to the upper end of the nozzle shaft 3 exposed upward.

After the stopper 9 is coupled, the protective cover 7 is coupled to the spray plate accommodating part 11 of the nozzle body 1 such that the upper support portion 72 is in close contact with the lower end of the nozzle shaft 3.

After the protective cover 7 is positioned in the spray plate accommodating part 11, one end of the bulb fixing member 5 is inserted into the support groove 73 of the upper support part 72, and the fixing protrusion 52 is fixed to the fixing groove 52. A pair of bulb fixing members 5 are coupled to the spray plate accommodating part 11 so as to be inserted into the 12. At this time, one end is coupled to the bulb insertion hole 51a of the bulb fixing members 5, and the other end is fixed to the bulb fixing bolt 8 by fixing the thermobulb 6 positioned so as to be inserted into the female screw portion 51b. The bulb fixing members 5 are spaced apart from each other by the thermobulb 6, and the upper support portion 72 of the protective cover 7 is exposed to the pressure of water or extinguishing fluid while maintaining the spaced intervals. The nozzle shaft 3 is supported so as not to move downward. At this time, the upper surface of the bulb fixing member 5 is in contact with the bottom surface of the upper support portion 72 of the protective cover 7 to securely support the protective cover (7).

By the combination described above, the assembly of the fine powder spray nozzle 100 is completed. The fine powder spray nozzle 100 in the state of assembly is shown in FIG.

The fine powder spray nozzle 100 is assembled and fixed to the end of the fire fighting pipe installed in the upper portion of the fire suppression target space so that the spray plate accommodating part 11 faces downward. In this case, it is screwed by the body female screw portion 17 formed on the upper inner surface of the nozzle body (1) is fixed to the end of the digestive pipe. In addition, a bracket or a plate is screwed to the body male screw portion 15 formed at the outer circumference of the nozzle body 1 to support the fine powdered water nozzle 100 so as not to move upward in the ceiling surface, and at the same time, the nozzle body 1 and Shield the gap between the ceilings. When the installation of the fine spray nozzle 100 is finished, the extinguishing fluid such as water or extinguishing fluid is introduced into the space of the nozzle body (1 ') by introducing the extinguishing fluid such as water or extinguishing fluid into the extinguishing pipe to which the fine spray nozzle 100 is combined. Will remain filled.

As described above, if a fire occurs after the fine atomizing nozzle 100 is installed in the fire suppression space, the thermal bulb 6 is damaged by the heat of the fire, and fine powder is sprayed to extinguish the fire.

In detail, when the thermobulb 6 is broken by heat of fire, the support force for the bulb fixing member 5 is removed, and the bulb fixing members 5 disposed on both sides are pinched together, and the fixing protrusion 52 is disposed. ) Is separated from the fixing groove 12 so that the bulb fixing member 5 is separated from the spray plate accommodating part 11.

When the bulb fixing member 5 is separated, the support force for the upper support portion 72 of the protective cover 7 is released, so that the protective cover 7 is also separated from the spray plate accommodation portion 11 and falls off.

When the protective cover 7 is separated from the nozzle body 1, the nozzle shaft 3 is pushed downward as shown in FIG. 5 by the pressure of the extinguishing fluid such as water or extinguishing fluid filled in the nozzle body 1 '. The shielding end 32 is separated from the flow path space 16, and water or extinguishing liquid is injected through the flow path space 16. At this time, the rectifying pipe 4 is to ensure that the extinguishing fluid such as water or extinguishing liquid to be injected in a uniform amount. Extinguishing fluid, such as water or extinguishing liquid, which has been injected, collides with the spray plate 2, is converted into a sprayed phase, and sprayed to extinguish the fire.

Fire extinguishing fluid such as water or extinguishing liquid that has passed through the spray hole 22 of the spray plate 2 is also sprayed by the spray hole 22 or after colliding with the space member 10.

Also shown in FIG. 6 is a fine atomizing nozzle 100a in which the thermobulb 6 is broken by the above-described process in the event of fire.

If the pressure inside the nozzle body 1 'becomes equal to the atmospheric pressure by shielding the hydrant valve after the fire extinguishing is completed, the manager may remove the thermobulb 6, the protective cover 7, and the bulb fixing member 5. By remounting the spray plate accommodating part 11, the fine powder spray nozzle 100 can be easily repaired to prepare for the next fire.

7 is a modified embodiment of the present invention, the spray plate (2a) is formed to have a plurality of wings (21a) separated by the incisions (22a), the spray plate combined end 35 It is shown to be combined in two layers. In this case, the wing portions 21a of the spray plates 2a coupled to the lower portions of the cutouts 22a of the spray plates 2a are positioned at the top.

The embodiments described above are described to facilitate understanding of the present invention and are not described to limit the present invention. Therefore, each element disclosed in the said embodiment includes all the design changes and equivalents which belong to the technical scope of this invention.

Claims

A nozzle body having a flow path space that is opened or shielded by a nozzle shaft to supply and block extinguishing fluid; and

A rectifying tube formed adjacent to said flow path space;

A nozzle shaft inserted into and coupled to the rectifying pipe and the flow path space;

A stopper coupled to an end portion of the nozzle shaft opposite to the differential spraying side to limit movement of the nozzle shaft; and

A spray plate coupled to an end portion of the atomizing spray side of the nozzle shaft;

When both ends of the heat sensing body are respectively supported, and are coupled to maintain a fixed state at both sides of the inner diameter of the atomizing spray side opening of the nozzle body, the nozzle shaft is supported to maintain the shielding of the flow path space, and the heat sensing body is damaged. And a heat-sensitive body fixing member which is separated from the nozzle body and releases the supporting force of the nozzle shaft.
The method according to claim 1, wherein the nozzle body,

And a support wall which protrudes along the inner circumference to form the flow path space and divides the internal region of the nozzle body into the nozzle body and the spray plate accommodating part.
The method according to claim 1,

An atomizing nozzle, characterized in that the inner diameter surface of the atomizing spraying side opening of the nozzle body is provided with a fixed groove which is concaved along the circumference of the inner diameter or a plurality of fixing grooves concaved at predetermined angle intervals.
The method according to claim 3,

The atomizing nozzle, characterized in that the fixing projection is inserted into the fixing groove on the surface facing the fixing groove of each of the thermosensitive member fixing member.
The method according to claim 1, wherein the nozzle shaft,

And a shielding end portion having an outer diameter corresponding to the inner diameter of the flow path space, the shielding end portion opening or shielding the flow path space according to the movement of the nozzle shaft, and a moving portion extending from the shielding end portion having an outer diameter smaller than the shielding end portion.
The method according to claim 1,

A lower protection part protecting the thermal element; and

And a protective cover having an upper support portion positioned between the thermal element fixing member and the spray plate to support a lower protective portion.
The method according to claim 1,

The spray plate is a spraying nozzle, characterized in that a plurality of radially formed injection holes.
The method according to claim 1,

The spray plate is a spraying nozzle characterized in that it comprises a plurality of incisions formed radially and a plurality of wings spaced apart from each other by a plurality of incisions.
The method according to claim 8,

The spraying plate is fine sprayed nozzle, characterized in that two or more are installed at the lower end of the nozzle shaft.