JP2000334060A - Drencher fire extinguishing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease parts number, and to reduce cost and working time by designing a drencher fire extinguishing equipment, which is attached at the periphery of a facility, in such a manner that multiple drencher heads jetting fire extinguishing water are provided with jet ports each of which is formed from intersected two grooves. SOLUTION: The drencher fire extinguishing equipment is attached at a wall of a structure facing a boundary to the next area, and multiple drencher heads 3a, 3b are arranged at the lower ends of branch pipes 2 projecting downward from a main pipe 1. A T-shaped jet port 41 is formed at a jet part 4a of the drencher head 3a disposed at a bent part A of the wall. The jet port 41 is formed in such that a groove 41a crossing the center of the jet part 4a, and the other groove 41b meeting at right angles with the groove 41a and connecting the periphery to the center of the jet part 4a are arranged in a T-shape. A result is that a single drencher head 3a is able to jet fire extinguishing water to the both sides of the wall of the bent part A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage fire extinguishing system provided with a plurality of drainage heads for injecting digestion water arranged along the periphery of an installation target.

[0002]

2. Description of the Related Art A drainage fire extinguishing system is provided at a border line of a building adjacent to a building, and fire extinguishing water is sprayed along the border line of the building to protect the building from a fire. Prevention has been made. As shown in FIG. 8, the drainage fire extinguishing equipment includes a main pipe 93 through which fire extinguishing water flows horizontally along a wall surface 97 of the building,
Branch pipes 95 # 95 provided so as to protrude downward from the main pipe 93 at predetermined intervals along the longitudinal direction of the main pipe 93, and fire extinguishing water provided at the lower ends of the branch pipes 95 # 95. Sprinkler equipment provided with a drainer head 90 # 90 for the sprinkler.

Conventionally, as shown in FIG. 9, a drainer head 90 having a single injection port 92 formed in an injection section 91 for injecting fire-extinguishing water is used in this drainage fire-extinguishing equipment. And the fire extinguishing water is
Head 90 so that a water film parallel to the
It was sprayed from $ 90.

[0004]

However, when the wall surface 97 of the structure is bent, a water film is formed on the front surface of each of the wall surfaces 97, 97 constituting the bent portion, as shown by X and Y in FIG. When the fire extinguishing water is to be sprayed so as to be formed, each wall 9
Drainer heads 90, 90 need to be attached to the fronts of 7, 97, respectively. For this reason, the number of parts is increased, the cost is increased, and the installation takes time.

The present invention has been made in view of such a problem, and provides a drainage fire extinguishing system capable of reducing the number of parts, reducing cost and shortening installation time.

[0006]

According to the first aspect of the present invention, there is provided a drainage fire extinguishing system including a plurality of drainage heads (3a, 3b, 3c) for injecting fire extinguishing water arranged along the periphery of the installation target. Wherein the drainage fire extinguishing equipment is
The above object is solved by a drainage fire extinguishing system including a drainer head (3a, 3c) having an injection port (41, 42) for injecting fire extinguishing water formed by two intersecting grooves (41a, 41b, 42a).

According to a second aspect of the present invention, in the drainage extinguishing system according to the first aspect, the drainage extinguishing system includes:
The drainage head (3a, 3c) is provided near a bent portion (A) where the periphery of the installation object is bent, and two grooves (41a, 41b, 42a) of the injection port (41, 42) are provided.
Is characterized by the fact that the direction coincides with the direction in which the peripheral edge is bent and extended.

According to a third aspect of the present invention, in the drainage fire-extinguishing equipment according to the second aspect, the drainage equipment has an injection port (40) formed in a straight line in front of a long and flat peripheral edge (B) of the installation object. Drainage head (3)
And the injection port (40) is provided so as to be parallel to a direction in which the peripheral edge (B) extends.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 3 show an embodiment of a drainage fire extinguishing system of the present invention. The drainer fire extinguishing system
It is installed on the part of the wall standing on the periphery of the building, which is located on the border line of the adjacent ground. The drainage fire extinguishing system includes a main pipe 1 disposed horizontally along an upper portion of a wall 7 # 7, and a branch pipe 2 # projecting below the main pipe 1 at a predetermined interval in a longitudinal direction of the main pipe 1. 2 and drainer heads 3a and 3b attached to the lower ends of the branch pipes 2 # 2. The wall surface 7 # 7 of the building has a bent portion A # A that is bent in some places, and the main pipe 1 is also bent at the bent portion A # A of the wall surface along the wall surface.

The drainage heads 3a and 3b have hemispherical injection portions 4a and 4b (see FIGS. 2 and 3).
The injection parts 4a and 4b are attached to the lower end of the branch pipe 2 # 2 with the injection parts 4a and 4b facing downward. Part A ‥ A where wall 7 ‥ 7 bends
A T-shaped injection port 41 is formed in the injection section 4a of the drainer head 3a # 3a attached near the.
FIG. 2 shows the ejection portion 4a of the drain head 3a attached near the bent portion AA of the wall surface 7 # 7 shown in FIG. The injection part 4a is formed on a hemispherical surface. The injection part 4a has one groove 41a formed so as to cross the central part thereof, and the injection part 4a is orthogonal to the groove 41a.
Another groove 41 formed so as to connect the periphery and center of a
An injection port 41 formed such that b forms a T-shape is provided. The drainer head 3a has the other groove 41b parallel to the other of the wall surfaces 7, 7 so that the one groove 41a formed to cross the center portion is parallel to one of the curved wall surfaces 7, 7. It is attached to the lower end of the branch pipe 2 # 2.

On the other hand, as shown in FIG. 3, a hemispherical injection part 4b is attached to a drainer head 3b # 3b mounted in front of a part B # B where the wall surface 7 # 7 of the building is formed flat.
Is formed in a single character so as to cross the center of the nozzle. This drainer head 3b # 3b
The injection port 40 is attached to the lower end of the branch pipe 2 # 2 so as to be parallel to the wall surface 7 # 7.

These two types of drain heads 3a, 3
With b, the wall of the building 7 near the boundary line of the adjacent ground is protected by fire water. That is, the flat portion B ‥ B of the wall surface 7 ‥ 7 is formed by a one-character injection port 4 provided on the front surface thereof.
A water film parallel to the wall surfaces 7 # 7 is formed by the drain heads 3b # 3b provided with 0. In addition, the front surface of the wall surface 7 # 7 forming the bent portion A # A of the wall surface 7 # 7 is jetted by a drainer head 3a # 3a having a T-shaped injection port 41 near the bent portion A # A. A T-shaped fire extinguishing water film is formed. These water films protect the building from fire.

Although the description has been given of the case where the injection port of the drainer head attached to the bent portion of the wall surface is formed in a T shape, the shape of the injection port is not limited to this. For example, as shown in FIG.
The two grooves 42a, 42a may be formed so as to form a substantially L-shape, and this may be attached to a portion where the wall surface of the building is bent at a right angle, and the grooves may be provided so as to coincide with the extending direction of the bent wall surface. Further, the groove of the injection port is not limited to the angle formed by the two grooves forming a right angle, and may be formed so as to form a desired angle according to the bending angle formed by the wall surface of the building to be installed. .

Further, the wall surface is erected on the peripheral edge, and is not limited to the one installed along this wall surface. The space between them may be installed in a portion provided as a space.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a place where there is no obstacle in the surroundings, a drainage head having a T-shaped injection port used for the drainage fire extinguishing system of the present invention is installed at a position 2 m from the ground to perform a fire extinguishing water injection test. went.

FIG. 5 shows the range of fire extinguishing water injected from the drain head. As is clear from this figure, the fire extinguishing water is sprayed in a horizontal direction so as to draw a T-shape. The part C in the figure indicates the range of the fire extinguishing water injected from the groove crossing the center of the injection part, and the part D indicates the injection area from the groove formed so as to connect the periphery of the injection part to the center. It shows the fired water jet range.

FIG. 6 shows the relationship between the left-right direction and the up-down direction of the fire-extinguishing water injected from the groove crossing the center of the injection part. FIG. 7 shows the connection between the periphery of the injection part and the center. FIG. 5 shows the relationship between the front-rear direction and the height of the fire extinguishing water injected from the groove. As can be seen from these figures, the fire extinguishing water injected from both grooves reaches a height of about 2.5 m from the ground at a position where the horizontal distance from the drain head is about 3 m. In addition, the fire extinguishing water that has been injected has a horizontal distance of about 4.5 m from the drainage head.
Has been reached.

According to the results of this test, if the injection port of the drain head is formed in a T-shape, fire-extinguishing water can be formed in a T-shaped water film, and the fire-extinguishing water can be used in a portion where the wall surface of a building is bent. If so, it turns out to be effective.

[0020]

As described above, according to the present invention,
Since the drainage head provided with an injection port formed by two intersecting grooves is provided at the portion where the wall surface of the building is bent, a single drainage head forms a water film on the front of both bent wall surfaces. Can be done. Therefore, the number of branch pipes and drain heads protruding from the main pipe can be reduced, and cost and installation time can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a part of a drainage fire extinguishing system according to an embodiment of the present invention.

FIG. 2 is a perspective view of an injection unit of a drain head used in a bent portion of a wall surface in the drain fire extinguishing equipment of FIG. 1;

FIG. 3 is a perspective view of an injection section of a drainer head used in front of a flat wall surface in the drainage fire extinguishing equipment of FIG. 1;

FIG. 4 is a front view showing an ejection unit of the drain head according to another embodiment different from the drain head of FIG. 2;

FIG. 5 is a diagram showing a horizontal spraying range of fire-extinguishing water injected from the drain head of FIG. 2;

FIG. 6 is a view showing a vertical distribution of fire-extinguishing water injected from a groove crossing the center of the injection section of the drainage head of FIG. 2;

FIG. 7 is a view showing a vertical distribution of fire-extinguishing water injected from a groove connecting the periphery and the center of the injection unit of the drainer head of FIG. 2;

FIG. 8 is a perspective view showing one embodiment of a conventional drainage fire extinguishing system.

9 is a front view of an injection unit of a drain head used in the drain fire extinguishing equipment of FIG. 8;

[Description of Signs] 1 Main pipe 2 Branch pipe 3a, 3b Drainer head 40, 41, 42 Injection port

Claims (3)

[Claims] 1. A drainage fire extinguishing system including a plurality of drainer heads for injecting fire extinguishing water arranged along a periphery of an installation target, wherein the drainage fire extinguishing system is formed by two intersecting grooves. Drainer fire extinguishing equipment comprising a drainer head having an injection port for injecting fire-extinguishing water. 2. The drain fire extinguishing system, wherein the drainer head is provided near a bent portion where a peripheral edge of the installation target is bent, and a direction of the two grooves of the injection port is a direction in which the peripheral edge is bent and extends. 2. The drainage fire extinguishing system according to claim 1, wherein: 3. The drainage facility includes a drainer head in which an injection port is formed in a single character in front of a long and flat peripheral edge of the installation target, and the injection port is parallel to a direction in which the peripheral edge extends. The fire extinguishing system for drainage according to claim 2, wherein the fire extinguishing system is provided.