JPH11151317A - Structure of floor-slab-penetrating part of vertical pipe in sprinkler facility for multistoried building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the functions of a sprinkler facility for a multistoried building in the event of a fire by preventing a vertical pipe leading to an alarm valve placed in a pipe space in a fire limit from being melted by heat from outside the pipe space in the event of a fire, although a synthetic-resin pipe that has problems regarding material and fire resistance is used as the vertical pipe. SOLUTION: In the structure of the floor-slab-penetrating part of a vertical pipe in a sprinkler facility for a multistoried building, a sheath pipe 11 made of steel, which has a flange part 11a formed on its outer periphery, is dropped into a through hole 12 formed in a floor slab 10 in a pipe space PS, and the flange part 11a is secured to the upper surface of. the part of the floor slab around the through hole 12. The vertical pipe 3 for the sprinkler facility is made of a synthetic resin and is passed through the sheath pipe 11, and rock wool 14 is packed between the synthetic-resin vertical pipe 3 and the sheath pipe 11. The sheath pipe 11 is closed at its lower end with fireproof putty 15 and at its upper end with mortar 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a vertical pipe floor slab penetration portion in a sprinkler system for a multi-layer building such as an apartment house.

[0002]

2. Description of the Related Art Conventionally, in a sprinkler system (fire extinguishing system) for a multi-story building such as an apartment house, there is a problem in terms of fire resistance, from an aquarium room to an alarm valve provided in a pipe space of a fire prevention compartment. As the vertical pipe, the use of a synthetic resin pipe was not permitted, and an iron pipe was used.

[0003] Therefore, there are many problems such as heavy piping weight, poor workability, and poor earthquake resistance, and thinning of the thread due to corrosion of the joint thread easily causes water leakage. Was.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and an object of the present invention is to provide a sprinkler system for a multi-story building in a pipe space of a fire protection section. Despite using a synthetic resin pipe that is difficult in terms of material and fire resistance as the vertical pipe to the alarm valve, it prevents the vertical pipe from melting due to heat from outside the pipe space when a fire occurs. Therefore, the function of the sprinkler equipment should be ensured in the event of a fire.

[0005]

In order to solve the above problems, according to the present invention, an iron sheath tube having a flange portion formed on the outer periphery is dropped into a through hole formed in a floor slab of a pipe space. While fixing the flange portion on the upper surface of the floor slab around the through hole, the vertical pipe for the sprinkler equipment is made of synthetic resin, the synthetic resin vertical pipe is piped through the sheath pipe, and the synthetic resin vertical pipe and the sheath are formed. Rock wool was filled between the tubes, the lower end of the sheath tube was closed with a refractory putty, and the upper end of the sheath tube was closed with mortar.

According to the above configuration, when a fire occurs, even if the temperature inside the pipe space defined by the fire protection compartment rises due to external heat, the temperature inside the pipe space becomes higher as it rises, and this portion becomes higher. Since the sheath is protected by the sheath tube or the rock wool, the vertical tube made of synthetic resin is not melted or deformed at an early stage, and the function as a sprinkler facility is secured.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a multi-story building in which an apartment house has four or more floors. The sprinkler equipment for the multi-story building provided on the fourth floor or more of the multi-story building is divided into four systems A, B, C, and D as shown in FIGS. 1c, 23rd floor, 36th floor, tower 1
Located on the floor. 3 systems B except 1 system A in the upper part,
C and D have a large difference in height from the fire extinguishing water tanks 1a, 1b and 1c and can secure the water pressure.
It is a gravity type system that always pressurizes from 1b and 1c,
Regarding the upper system A, which cannot secure the water pressure by the gravity type, a sprinkler pump P using the fire extinguishing water tank 1a as a water source is installed in a dedicated room provided with a fire protection compartment to form a pump pressurizing system. Fire extinguisher tanks 1a, 1b, 1c are FRP
It is installed in an aquarium room with fire protection compartment.

As shown in FIG. 2, each of the systems A, B, C, and D has a loop circuit 2, a vertical pipe 3 to the loop circuit 2, and a vertical pipe 3 branched from the loop circuit 2. And vertical pipe 3
And a sprinkler facility 6 in the dwelling unit, which is branched for each dwelling unit 4 and provided via an alarm valve 5. The entire fire extinguishing pipe up to the alarm valve 5 (the loop circuit 2, the vertical pipe 3 to the loop circuit 2, the vertical pipe 3 branched from the loop circuit 2, etc.) is made of synthetic resin (specifically, polybutene). ). Therefore, it is lightweight, has good workability, and is excellent in corrosion resistance, and there is no need to worry about red water due to rust inside the piping, and damage during malfunction can be minimized.

The fire extinguishing pipes for each of the systems A, B, C, and D are connected to the pipe space PS for dwelling units provided for each dwelling unit from the tank room through the main pipe space MPS of the fire prevention section and the open corridor 7. From there, to each dwelling unit 4 via the alarm valve 5. The alarm valve 5 automatically operates when the sprinkler head reaches the set temperature (72 degrees Celsius) when the fire occurs and the fuse is blown, and the water in the pipe is discharged from the sprinkler head. An alarm is displayed on a display provided near the entrance and an alarm is displayed on a disaster prevention monitoring panel in the disaster prevention center.

As shown in FIG. 3, the pipe space PS is provided so as to face an open-air corridor 7 provided around a stairwell 8, and is provided with a fire prevention compartment (a cohabitation compartment) with the dwelling unit 4.
The maintenance door 9 provided at the entrance is an iron door.

The structure of the portion where the vertical pipe 3 made of synthetic resin penetrates through the floor slab 10 of the pipe space PS forming the horizontal fire protection compartment is as follows. That is, as shown in FIGS. 4 and 5, an iron sheath tube 11 of an appropriate length having a flange portion 11 a formed on the outer periphery is dropped into a through hole 12 formed in a floor slab 10 of a pipe space PS, The flange portion 11a is placed on the upper surface of the floor slab 10 around the through hole 12 and fixed with the hole-in anchor 13, while the synthetic resin vertical tube 3 is piped through the sheath tube 11 to form the synthetic resin vertical tube 3. Rock wool 14 is filled between the sheath tube 11 and the sheath tube 11, the lower end of the sheath tube 11 is closed with a refractory putty 15, and the upper end of the sheath tube 11 is closed with a mortar 16.

Therefore, when a fire occurs, the temperature of the door 9 rises due to heat from the outside, and even if the temperature inside the pipe space PS rises due to the heat radiation from the door 9, the pipe space PS
The temperature inside becomes higher as the temperature rises, and since this portion is protected by the sheath tube 11 and the rock wool 14, the vertical tube 3 made of synthetic resin is not melted or deformed at an early stage. Function will be secured.

The synthetic resin pipe 18 penetrating the beam 17 from the open corridor 8 and entering the pipe space PS is the sheath pipe 1
1 is connected to the synthetic resin vertical pipe 3 at a position lower than the lower end, and the synthetic resin pipe 18 up to the connection portion also has the rock wool 14 and the sheath pipe 11 similarly to the synthetic resin vertical pipe 3.
Protected. Further, the branch pipe 19 downstream from the alarm valve 5 is also a synthetic resin pipe (polybutene pipe), penetrates the wall (using an ALC plate) 20 of the pipe space PS, and enters the ceiling 21 of the dwelling unit 4. It is connected to the provided synthetic resin (polybutene) header 22. The portion of the branch pipe 19 located above the lower end of the sheath pipe 11 is wound with the rock wool 14 to a thickness of 50 mm, and furthermore, the wire mesh 23 is wound therearound to secure fire resistance and heat resistance. is there.

[0014]

According to the present invention, the vertical pipe up to the alarm valve disposed in the pipe space of the fire protection section has the advantages that it is lightweight, has good workability, and does not generate red water due to rust. On the other hand, despite the use of synthetic resin tubes that are difficult in terms of fire resistance,
Even if the temperature inside the pipe space rises due to heat from the outside, the temperature inside the pipe space rises higher as it rises, and this part is protected by a sheath tube or rock wool. Without melting or deforming early,
The function as the sprinkler equipment can be secured.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a sprinkler facility for a multi-story building.

FIG. 2 is a piping circuit diagram of a sprinkler facility for a multi-story building.

FIG. 3 is a plan view of a specific floor of a multi-story building.

FIG. 4 is a vertical sectional side view showing a structure of a floor slab penetration portion of a vertical pipe.

FIG. 5 is an enlarged vertical sectional side view of a main part.

[Explanation of symbols]

PS: pipe space, 3: synthetic resin tube, 10: floor slab, 11: sheath tube, 11a: flange portion, 12: through hole, 14: rock wool, 15: refractory putty, 16: mortar.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI // F16L 1/00 F16L 5/02 M (72) Inventor Toshio Sakai 4-1-1-13 Honcho, Chuo-ku, Osaka Co., Ltd. Takenaka Corporation Osaka Main Store

Claims (1)

[Claims] 1. An iron sheath tube having a flange portion formed on an outer periphery is dropped into a through hole formed in a floor slab of a pipe space, and the flange portion is fixed to an upper surface of the floor slab around the through hole. A vertical pipe for use is made of synthetic resin, the synthetic resin vertical pipe is piped through the sheath pipe, rock wool is filled between the synthetic resin vertical pipe and the sheath pipe, and the lower end of the sheath pipe is put on a refractory putty. A structure of a floor slab penetration part of a vertical pipe in a sprinkler system for a multi-layer building, wherein the upper end of the sheath pipe is closed with a mortar.