JPH04303467A - Fire extinguishing nozzle unit - Google Patents

Abstract

PURPOSE:To provide a fire extinguishing nozzle unit quickly built without screwing a head in a plant a work site by previously calculating a fire extinguishing fluid releasing angle to a protective object, and providing respective nozzle jet parts, mounted to a predetermined part of a supply water pipe, left as worked in accordance with this calculated angle. CONSTITUTION:The nozzle unit is constituted of a fire extinguishing pipe 1 with a nozzle mounting port 3 formed in a plurality of parts spaced, jet part 5 for emitting a fire extinguishing agent in a predetermined direction, nozzle main unit 4 with an insertion part 6 formed and a connecting means, to provide a mounting flange 7 in the outside of the nozzle main unit 4, and this nozzle main unit 4 is stopped turned simultaneously fixed in press contact through the insertion part 6 and the mounting flange 7 relating to the fire extinguishing pipe 1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing nozzle unit used as a fire extinguishing device.

0002

2. Description of the Related Art Sprinkler fire extinguishing equipment, water spray fire extinguishing equipment, fan-shaped water spray equipment, etc. are known as fire extinguishing equipment, and all of them are fixedly arranged surrounding a fire extinguishing area.

Further, as shown in FIG. 7, when slit-like fan-shaped discharge heads are arranged side by side, the angle θ1 of the direction of the fan with respect to the discharge direction of the outer head H1 is such that the flow line from the central part to the discharge direction of the head H2 is By installing the fire extinguishing liquid so that the angle of direction θ2 is larger, that is, so that the head closer to the outside than the center faces outward, the suction effect of the extinguishing liquid discharged from the fan-shaped discharge head closer to the center will work. , deflecting the flow of extinguishing fluid,
It has recently been found that the fire extinguishing liquid can be evenly distributed over a rectangular fire extinguishing area by making the fire extinguishing liquid almost parallel.

As described above, the radiation angle of the nozzle is extremely important for highly efficient spraying of fire extinguishing liquid, so conventionally, as shown in FIG. was screwed in using sealing tape, and the amount of screwing was adjusted while releasing water, etc.

[0005]

[Problems to be Solved by the Invention] When these heads are installed on site, sealing tape is used when screwing in, so it is difficult to achieve both perfect sealing and regulating the direction of the nozzle slit. If screwing is done with priority given to sealing performance, the angle of the nozzle slit may be incorrect, and conversely, if priority is given to regulation of the nozzle slit angle, the seal may be incomplete, requiring a lot of labor and man-hours on site construction. There were problems such as.

[0006] This invention was made to solve the above-mentioned problems, and the angle of discharge of extinguishing liquid to the object to be protected is calculated in advance, and each nozzle attached to a predetermined location of a water supply pipe is adjusted according to this. To provide a fire extinguishing nozzle unit which is slit-processed and whose head can be quickly assembled at a factory or on site without screwing.

[0007]

[Means for Solving the Problems] In order to achieve the above object, a fire extinguishing nozzle unit obtained by the present invention includes a fire extinguishing pipe in which a plurality of nozzle attachment ports are formed at predetermined intervals on a water supply pipe body; It consists of a nozzle body, which has a spouting part for discharging extinguishing agent in a predetermined direction at its tip, and an insertion part for each of the nozzle installation ports at its base end, and means for connecting these parts, and is provided with a mounting flange in a direction that intersects with the pipe body, and the nozzle body is fixed to the fire extinguishing pipe via the insertion portion and the mounting flange to prevent it from rotating and is simultaneously crimped and fixed. It is set as.

[0008]

[Operation] Position and fit the insertion part of the specified nozzle body into the nozzle installation port of the fire extinguishing piping, and then attach the nozzle body to the fire extinguishing piping via this insertion part and the mounting flange at the same time as preventing rotation. A fire extinguishing nozzle unit is obtained by crimping and fixing.

[0009]

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3. 2 and 3 are enlarged cross-sectional views of the present invention. In the figure, 1 is a fire extinguishing pipe, and a plurality of nozzle attachment ports 3 are formed in a water supply pipe main body 2 at predetermined intervals. Reference numeral 4 denotes a fire extinguishing nozzle main body, which has a slit jetting hole 5 formed at its tip as a spouting part for discharging extinguishing agent in a predetermined direction designed in advance, and a tapered insertion part into the nozzle attachment port 3 at its base end. 6 is formed. Reference numeral 7 denotes a mounting flange, which is formed on the outside of the nozzle body 4 in a direction intersecting with the pipe body 2 (in this case, the right angle direction), and its inner surface is a three-dimensional curved surface that matches the outer peripheral surface of the pipe body 2. . Therefore, when the nozzle body 4 is in close contact with the pipe body 2, it is completely prevented from rotating. A sealing packing 8 is press-fitted into an annular groove on the outer periphery of the insertion portion 6, and its surface follows the three-dimensional curved surface of the pipe body 2. Reference numeral 9 denotes a holder which straddles the pipe body 2, abuts against the tip of the mounting flange 7, and is tightened together with mounting bolts 10.

Next, the principle of operation will be explained. A slit is formed in the fire extinguishing nozzle body in advance so as to face in a predetermined direction based on design values, and this is assembled on site or in a factory.
into the designated nozzle mounting port 3, insert the insertion part 6 into the nozzle mounting port 3, and attach the holder 9 to the mounting flange 7.
When the mounting bolts 10 are brought close to the mounting bolts 10, the mounting bolts 10 are fixed at the same time as being prevented from rotating. 2b in the figure is a mounting flange.

FIGS. 4, 5, and 6 are an overall view and an enlarged sectional view of a fire extinguishing nozzle unit according to another embodiment. Figure 1,
The same reference numerals are used for the same or corresponding parts as in FIG. 2, and the description thereof will be omitted here. Reference numeral 11 denotes a U-shaped connecting bolt, and by tightening the nut 12, the nozzle body 4 is brought into pressure contact with the pipe body 2, the sealing packing 8 prevents leakage at the connecting part, and the curved inner surface of the flange 7 prevents rotation. It is something that

[0012] The fire extinguishing nozzle main body may be, for example, a sidewall type foam head or a sprinkler head, and the shape of the ejection part may be an appropriate shape depending on the discharge pattern of the extinguishing agent, for example, a plurality of holes. It is also possible to have a director at the end of the ejection hole.

[0013]

[Effects of the Invention] The present invention provides a fire extinguishing pipe in which a plurality of nozzle attachment ports are formed at predetermined intervals on a water supply pipe body;
It consists of a nozzle body, which has a spouting part for discharging extinguishing agent in a predetermined direction at its tip, and an insertion part for each of the nozzle installation ports at its base end, and means for connecting these parts, and is provided with a mounting flange in a direction that intersects with the pipe body, and the nozzle body is fixed to the fire extinguishing pipe via the insertion part and the mounting flange at the same time as preventing rotation. Because of this,
By calculating the emission angle of each nozzle toward the object to be protected in advance and performing machining, it is possible to
There is no need for a T-type joint, and the nozzle head can be simply crimped onto the fire extinguishing piping without having to screw it in, reducing the number of man-hours required to adjust the angle and sealing properties of the conventional method.
The number of parts can be reduced, and the appearance is also good.

[Brief explanation of drawings]

FIG. 1 is a side view of a fire extinguishing nozzle unit according to an embodiment of the present invention.

FIG. 2 is a side view of a fire extinguishing nozzle unit according to an embodiment of the present invention.

FIG. 3 is an enlarged sectional view of the main part of FIG. 1.

FIG. 4 is a front view of a fire extinguishing nozzle unit according to another embodiment of the present invention.

[Figure 5] Side view of Figure 4

FIG. 6 is an enlarged sectional view of the main part of FIG. 4;

FIG. 7 is an explanatory diagram of a conventional fire extinguishing nozzle unit.

[Brief explanation of drawings]

1 Fire extinguishing piping 2 Water supply pipe body 3 Nozzle installation port 4 Nozzle body 5　Blowout hole 6 Insertion part 7 Mounting flange 8 Seal packing

Claims (1)

[Claims] [Claim 1] A fire extinguishing pipe in which a plurality of nozzle attachment ports are formed at predetermined intervals on a water supply pipe body, and a spout portion for discharging a fire extinguishing agent in a predetermined direction is formed at the tip,
It is composed of a nozzle body having an insertion part for each of the nozzle attachment ports at the base end, and means for connecting these parts, and a mounting flange is provided on the outside of the nozzle body in a direction intersecting with the pipe body. A fire extinguishing nozzle unit characterized in that the nozzle main body is fixed to the fire extinguishing piping through the insertion portion and the mounting flange to prevent rotation and at the same time to be crimped and fixed.