JPH11151318A - Sprinkler piping unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sprinkler piping unit whereby a high-quality sprinkler facility eliminating the fear of water leakage can be constructed easily in a short construction period. SOLUTION: A plurality of flexible synthetic-resin pipes 35, each preset to a predetermined piping length while assuming the layout of sprinkler heads, and having sprinkler heads 34, 34a, 34b connected to their respective ends, have their root ends connected to a plurality of piping connections provided in a header 29 made of a synthetic resin. After the hydraulic test of connections is complete, the plurality of flexible synthetic resin pipes 35 are wound into coil shapes to constitute a sprinkler piping unit SU sized so that it can be easily transported to a construction site.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler piping unit for streamlining sprinkler installation.

[0002]

2. Description of the Related Art Conventionally, in sprinkler facilities (fire extinguishing facilities) in dwelling units, synthetic resin pipes have not been approved as sprinkler facility pipes because iron pipes have been used because they are difficult in terms of fire resistance. It had been. FIG. 16 shows an example. 4 in the figure is one dwelling unit in the apartment house, 3
5 'is a pipe (iron pipe) for sprinkler equipment, and is piped in the ceiling. 34 is a sprinkler head. The sprinkler head 34 is attached to the living room 32c, 32.
d, 32e, 32f, kitchen 32g, etc., are placed on the ceiling of a part where a fire is expected to occur (a part where fire such as cooking or heating is used in daily life), but the entrance hall 32a or corridor It is not arranged in a portion where fire is not usually used, such as 32b. 10 is an open corridor, 3
3 is veranda, PS partitioned by evacuation partition
Is a pipe space for dwelling units facing the open corridor 10 and fire-blocked to the dwelling units 4.

[0003] In the above-mentioned sprinkler equipment in a dwelling unit, since an iron pipe is used as a pipe material, the pipe weight is large, the number of joints is large, and the workability is poor. In order to reduce the work of connecting pipes at high altitudes, the piping system may be pre-assembled on the floor and unitized (prefabricated), but since the sprinkler piping unit is a heavy iron product, Special equipment is required to lift the to a predetermined height horizontally.

In addition, since the piping system is made of iron and does not bend and deform, it is difficult to withstand earthquakes, and moreover, water leaks easily occur due to the thinning of the thread due to corrosion of the joint thread. In particular, pipes for sprinkler equipment do not have frequent water flows such as water supply pipes and hot water supply pipes. In the conventional sprinkler equipment that uses iron pipes, the rust generated inside the pipes will stagnate and grow, and as a result, when a malfunction occurs for some reason, the so-called “red water” is generated from the sprinkler head. Spouts, ruining interior finishing materials and furniture furnishings,
There is a problem that damage at the time of malfunction is increased.

[0005]

SUMMARY OF THE INVENTION The present invention has been made on the basis of the above considerations, and has as its object to construct a high-quality sprinkler facility with no risk of water leakage easily and in a short construction period. It is to provide a sprinkler piping unit that can be used.

[0006]

In order to solve the above-mentioned problems, according to the present invention, a plurality of sprinkler heads each having a predetermined pipe length set in advance in consideration of an arrangement of a sprinkler head and having a sprinkler head connected to a tip thereof are provided. The flexible plastic resin pipe is connected at its base end to a plurality of pipe connection ports provided on the synthetic resin header, a hydraulic pressure test of the connection portion is completed, and the connection section is wound into a coil to form a sprinkler pipe unit. .

[0007] According to the above configuration, the sprinkler piping unit is formed by connecting a flexible synthetic resin pipe, a sprinkler head, and a synthetic resin header and wound in a coil shape. Then, the sprinkler piping unit can be extended according to the floor plan of the dwelling unit, and the piping can be installed in the ceiling.

In this case, since a flexible synthetic resin pipe is used as a pipe material of the sprinkler equipment, the pipe length is set in advance in accordance with the layout of the dwelling unit and connected to the synthetic resin header and the sprinkler head. In spite of being unitized, it is much lighter than the case where an iron pipe is used, and the synthetic resin pipe can be bent freely, so that the workability is good and the connection part is Since the water pressure test has been completed, there is no danger of water leakage due to poor connection, the water pressure test of the connection part in the dwelling unit is omitted, and the construction period is shortened.

Further, since a flexible synthetic resin pipe is used as a pipe material, the pipe is deformed following the shaking of the building during an earthquake, so that not only the seismic resistance is improved, but also the inside of the pipe is improved. Since no rust is generated, damage when the sprinkler head malfunctions is small.

[0010] Incidentally, a cylindrical portion for fitting into the sprinkler head, a flange portion for concealing a hole edge of a sprinkler head insertion hole formed in the ceiling, and preventing the sprinkler head from coming into contact with other objects. Temporarily fixing a protective cover having a protective frame to the sprinkler head of the sprinkler piping unit, as described later,
This is preferable in that the sprinkler head can be prevented from being accidentally hit with another object and damaged during the loading of the sprinkler piping unit on site and the piping work.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a multi-story building in which an apartment house has four or more floors. The sprinkler facilities for apartment houses provided on the fourth floor or higher of the multi-story building are divided into four systems A, B, C, and D as shown in FIGS. 1 and 2, and the fire extinguisher tanks 1a, 1b, which serve as water sources. 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.

Each of the systems A, B, C and D has a loop circuit 2 and a loop circuit 2 as shown in FIGS.
Vertical pipe 3 to the vertical pipe 3 branched from the loop-shaped circuit 2,
It has a sprinkler facility 6 in a dwelling unit which branches off from the vertical pipe 3 for each dwelling unit 4 and is provided via an alarm valve 5. 3 and 4, 7 is a staircase, 8 is an elevator, and 9 is an elevator hall.

The fire extinguishing pipes of the respective 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 non-combustible section and the open corridor 10. From there, it reaches 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. Residential pipe space PS
Is provided facing an open-air corridor 10 provided around the building, and is provided with a fireproof compartment (communal living compartment) with the dwelling unit 4, and a maintenance door 12 provided at the entrance is an iron door.

Most of the fire extinguishing pipes of each of the systems A, B, C, D (except for the alarm valve 5, sprinkler heads 34,..., 34a, 34b to be described later, and a joint 37 for connecting the sprinkler heads to the end of each pipe 35). Are made of synthetic resin (specifically, polybutene). Therefore, it is excellent in corrosion resistance, there is no fear of red water due to rust inside the pipe, and damage at the time of malfunction is minimized.

As shown in FIGS. 5 and 6, among the fire-extinguishing pipes, the loop-shaped circuit 2 connected to the open-air corridor 10 around the stairwell 11 and the laterally drawn pipe section are connected to a non-combustible base 13 made of a lightweight steel frame as shown in FIGS. In addition, piping is concealed by piping in the ceiling 15 of the common area finished with a calcium silicate plate 14 which is a noncombustible material. In other words, a concealed pipe is provided in the ceiling 15 of the common part having a non-combustible finish to protect it from flame and heat when a fire occurs. Also, as shown in FIGS. 3 and 6, the loop-shaped circuit 2 and the laterally drawn pipe portion connected to the loop-shaped circuit 2 have a support interval of 1.5 m between the upper floor slab and the hanging metal fitting 16 in consideration of bending of the pipe. Within.

In the fire extinguishing pipe, the exposed pipe passing through the open corridor 10 facing the outside of the building has a 50 mm thick rock wool 17 as shown in FIGS.
And the periphery thereof is wound with a 0.3 mm-thick iron plate 18 to protect it from fire and heat in the event of a fire. Beam 19
And the pipe space PS for each dwelling unit that penetrates the beam 19 from the part that exits to the open-air corridor 10 and from the open-air corridor 10
As shown in FIGS. 5 to 7, the part that enters is insulated with rock wool 17.

As shown in FIG. 6, the vertical pipe 3 made of synthetic resin in the pipe space PS for dwelling units is separated from the door 12 by 500 mm or more in order to reduce adverse effects due to heat radiation from the open corridor 10 when a fire occurs. It is arranged. Further, a water-water heat exchanger is used as a hot water supply heat exchanger (not shown) installed in the dwelling unit pipe space PS.
The burner is not installed in the pipe space PS for dwelling units.

The structure of the portion where the vertical pipe 3 made of synthetic resin penetrates the floor slab 20 of the pipe space PS for dwelling units forming a horizontal fire protection section is as follows. That is, as shown in FIG. 8, an iron-made sheath tube 21 of an appropriate length having a flange portion 21 a formed on the outer periphery is dropped into a through hole 22 formed in a floor slab 20 of a pipe space PS for dwelling units.
The flange portion 21a is placed on the upper surface of the floor slab 20 around the through hole 22 and fixed with the hole-in anchor 23, while the synthetic resin vertical tube 3 is piped through the sheath tube 21 to form the synthetic resin vertical tube 3. Rock wool 17 is filled between the sheath tube 21 and the lower end of the sheath tube 21 with a refractory putty 24.
Is closed with a mortar 25 at the upper end.

Therefore, when a fire occurs, the temperature of the door 12 rises due to the heat from the outside, and even if the temperature inside the pipe space PS for dwelling units rises due to heat radiation from the door 12, even if the temperature inside the pipe space PS for dwelling units increases, The temperature becomes higher as the temperature rises, and since this portion is protected by the sheath tube 21 and the rock wool 17, the synthetic resin vertical tube 3 is not melted or deformed at an early stage, and the function as a sprinkler facility is achieved. Will be secured. As shown in FIGS. 6 and 7, the synthetic resin pipe penetrating the beam 19 and entering the dwelling unit pipe space PS is connected to the synthetic resin vertical pipe 3 at a position lower than the lower end of the sheath pipe 21. The synthetic resin tube up to the connection is also protected by the rock wool 17 and the sheath tube 21 in the same manner as the synthetic resin vertical tube 3.

The branch pipe 26 downstream from the alarm valve 5 is also a synthetic resin pipe (polybutene pipe), and is a cohabitation section (fire prevention section).
Wall of dwelling unit pipe space PS (ALC
Using a board. ) 27 and the ceiling 28 of the dwelling unit 4
It is connected to a synthetic resin (polybutene) header 29 provided therein.

The structure of the through-wall portion of the branch pipe 26 is as follows. That is, as shown in FIG. 9, an iron sleeve 30 having a flange 30a on one side is inserted into a through hole formed in a wall 27, and the flange 30a is fixed to a wall surface with a hole-in anchor 23. Rock wool 17 is filled in between the inserted branch pipe 26 and both ends of the iron sleeve 30 are closed with refractory putties 24, 24, while the iron sleeve 3 is closed.
Rock wool 17 is wound to a thickness of 50 mm around the branch pipe 26 protruding from both sides of the wire 0, and a wire mesh 31 is further wound therearound to secure fire resistance and heat resistance.

FIG. 10 and FIG. 11 show the sprinkler equipment 6 in the dwelling unit provided in each dwelling unit 4. In the figure, 32a is an entrance hall, 32b is a corridor, 32c, 32
Reference numerals d, 32e, and 32f denote living rooms, 32g denotes a kitchen, and 32h denotes a bathroom provided with a washbasin and a washing machine place. Reference numeral 33 denotes a veranda partitioned by an evacuation partition. The dwelling unit pipe space PS4 faces the open corridor 10 and is provided with a fire protection compartment (co-dwelling compartment) for the dwelling unit 4.

34 are living rooms 32c, 32d, 32e,
The sprinkler heads 34a and 34b arranged on the ceiling of the kitchen 32g and the kitchen 32g are used for the entrance hall 34a and the hallway 34.
b is a sprinkler head arranged on the ceiling.

The sprinkler heads 34,.
a, 34b is connected to a pipe 35 for sprinkler equipment
And a header 29 connected to the base end thereof are made of synthetic resin (polybutene), and the sprinkler heads 34. The inside of the ceiling 28 corresponding to the warning ranges a and b is provided as a pipeline.

That is, the rooms 32c, 32d, 32e, 32
As in the case of f and kitchen 32g, fires are used for cooking and heating in everyday life, and sprinkler heads 34 are installed on the ceiling 28 where fires are expected to occur as before. Not only the entrance hall 32
a and the corridor 32b, the sprinkler heads 34a and 34b are also provided on the ceiling 28 where the sprinkler head has been omitted without using a fire, so as to cope with those warning areas a and b. The part of the ceiling 28
A synthetic resin pipe 35 is provided so that the inside becomes a pipe.
Although the warning range of the sprinkler heads 34 provided on the ceiling 28 of the living rooms 32c, 32d, 32e, 32f and the kitchen 32g is not shown, these sprinkler heads 34 ...
The synthetic resin tube 35 leading to the sprinkler head 34 is also
The inside of the ceiling 28 at the portion corresponding to the warning range is piped.

The synthetic resin tube 35 is flexible.
Since it can be bent freely along the pipeline, the connecting portion of the tube itself is omitted between the sprinkler head and the header, and the number of joints is reduced. The non-combustible base 13 is
The ceiling foundation composed of the ridge 13a and the ridge receiver 13b arranged in a vertical and horizontal lattice is made of a lightweight steel frame, and the ceiling foundation is hung from a floor slab 20 on the upper floor and a suspension bolt and a connection hardware (both are known structures) (Not shown), and the quasi-noncombustible material 36 is screwed on a gypsum board 36a, which is a quasi-noncombustible material, on the field edge 13a.
6a, a vinyl cloth 36b, which is a quasi-noncombustible material, is adhered to the surface.

The sprinkler heads 34, 34a, 3
The joint 37 connecting the synthetic resin pipe 35 and the plastic pipe 35 is made of metal. As shown in FIGS. 12 and 13, the joint 37 is attached to a hanging bolt 38 hanging down from the lower surface of the floor slab 20 by a mounting bracket 39 for a sprinkler head. The sprinkler heads 34 ..., 34a,
34b is projected from the ceiling surface into the room.

The mounting bracket 39 includes a metal band 39a wound around and fixed to the joint 37, a sleeve 39d having a protruding piece 39c sandwiched between both ends of the metal band 39a and fixed with bolts and nuts 39b, and a sleeve 39d. It comprises a pair of nuts 39e, 39e screwed to the suspension bolts 38 at the upper and lower ends. Prior to the construction of the ceiling slab, the piping work of the sprinkler equipment 6 in the dwelling unit is performed, and after the completion of the ceiling slab, the joint 37 is moved up and down with respect to the suspension bolts 38 to thereby provide the floor slab 20.
Absorbs the error caused by the bending of the sprinkler head 3
4, 34a, 34b can be adjusted to the designed level.

As shown by a virtual line in FIG. 13, a synthetic resin film 39f may be formed on the metal band 39a to prevent electrolytic corrosion caused by contact between different metals. The synthetic resin header 29 is also attached to the suspension bolt 38 by a fitting 39 having the same structure.

According to the above configuration, since the synthetic resin pipe 35 is piped with the inside of the ceiling corresponding to the security range of all sprinkler heads including the security ranges a and b of the sprinkler heads 34a and 34b as the pipeline. Even if a fire occurs at any position under the pipeline, the synthetic resin pipe 35 is protected by fire extinguishing and cooling by discharging water from the sprinkler head.

Therefore, the pipe 35 for the sprinkler equipment is used.
Is made of a synthetic resin that does not generate red water and damages due to malfunctions are small, and the ceiling 28 of the dwelling unit 4 that conceals the synthetic resin pipe 35 has a finish made of a quasi-noncombustible material (vinyl) in which a gypsum board 36a is attached to a vinyl cloth 36b. Cloths are overwhelmingly different in color, pattern and texture compared to non-combustible materials, so there is a great deal of freedom in design choices and the price is low.) The piping system up to the heads 34..., 34a, 34b is not likely to be melted, and the function of the sprinkler equipment is secured.

Further, since the synthetic resin pipe 35 can be bent in an arbitrary direction along the pipeline, the number of joints used can be reduced, and in particular, a polybutene pipe is used as the synthetic resin pipe 35. Therefore, a highly reliable connection means such as heat fusion or electric fusion can be adopted for the joint, which eliminates the risk of water leakage due to the thinning of the thread portion caused by corrosion as in the past, and furthermore, the building is not damaged during an earthquake. Since the piping system can be deformed following the shaking, seismic resistance is increased, and high-quality sprinkler equipment is realized.

As shown in FIG. 1, even in the ceiling of the portion corresponding to the caution range of the sprinkler head 34 for the kitchen 32b, a pipe or pipe just above the equipment or appliance (such as a gas stove) 40 that uses a fire. It is desirable not to make it a road. Similarly, when a downlight is provided as a lighting device on the ceiling 28 such as the entrance hall 32a or the corridor 32b, the downlight is required to avoid adverse effects on the synthetic resin pipe 35 and the synthetic resin header 29 due to heat radiation into the ceiling 28. It is desirable to use a heat insulating structure.

The above-mentioned sprinkler equipment 6 in a dwelling unit is provided on site with a synthetic resin pipe 35 and sprinkler heads 34,.
Although it is possible to realize this by connecting the synthetic resin header 35 and the synthetic resin pipe 35 to each other, or by connecting the synthetic resin pipe 35 to the synthetic resin header 29, the use of a sprinkler piping unit as in this embodiment allows Can be installed easily and in a short construction period.

FIG. 14 shows a sprinkler piping unit SU used in the above-mentioned dwelling unit sprinkler facility 6. This sprinkler piping unit SU is set in advance to a predetermined piping length in consideration of the arrangement of the sprinkler heads 34, 34a, 34b, and is provided with a plurality of flexible pipes to which the sprinkler heads 34, 34a, 34b are connected. Synthetic resin pipe (specifically, polybutene pipe) 3
Is connected to a plurality of pipe connection ports provided on a synthetic resin (polybutene) header 29, a hydraulic pressure test of the connection portion is completed, and the coil is wound in a coil shape.

In the sprinkler unit 6 in a dwelling unit shown in FIGS. 10 and 11, two sprinkler piping units SU are connected to each other at their headers 29, but depending on the layout of the dwelling unit 4, , 34a, 34b, the required number of sprinkler heads 34, 34a, 34b will be used. The connection of the two illustrated sprinkler piping units SU may be performed by on-site work.
Two sprinkler piping units SU may be connected at a factory, and may be carried into the site as one sprinkler piping unit SU having two synthetic resin headers 29.

The above sprinkler piping unit SU
Is wound in a coil shape, so that it can be easily carried into the site. At the construction site, the sprinkler piping unit SU can be extended in accordance with the layout of the dwelling unit 4 and installed in the ceiling.

In this case, since the flexible synthetic resin pipe 35 is used as the pipe material of the sprinkler equipment, the pipe length is set in advance according to the layout of the dwelling unit, and the synthetic resin header 29 and the sprinkler head are set. 34 ..., 3
Despite being unitized by connecting to 4a and 34b, it is much lighter than the case of using iron pipe,
Not only can it be easily lifted to a given height,
Because it can be bent freely, the workability is very good, and
Since the water pressure test of the connection portion has been completed, there is no risk of water leakage due to poor connection, the water pressure test of the connection portion in the dwelling unit is omitted, and the construction period is shortened.

Further, since the flexible synthetic resin pipe 35 is used as the pipe material, the pipe is deformed following the shaking of the building during an earthquake, so that not only the seismic resistance is improved but also the inside of the pipe is improved. Since it does not rust, no red water is generated, and the damage at the time of malfunction of the sprinkler head is small.

The sprinkler piping unit SU
As shown in FIG. 15, the sprinkler head 34
, 34a, 34b, a flange 41b for concealing a hole edge of a sprinkler head insertion hole 42 formed on the ceiling, and a splicer head 34 ..., 34a, 34b. It is desirable that a protective cover 41 having a protective frame 41c for preventing contact with other objects is temporarily fixed to the sprinkler heads 34..., 34a, 34b by means such as screw fitting or elastic fitting. .

In this manner, the sprinkler piping unit SU carried into the site is attached to the suspension bolt 3 hanging from the floor slab by the mounting bracket 39 shown in FIGS. 12 and 13 with the protective cover 41 attached. Attach,
Piping work is performed, and then a lightweight steel frame ceiling base is installed, and then the sprinkler heads 34.
4b, the protective cover 41 is temporarily removed from the sprinkler heads 34, 34a, 34b, and the gypsum board 36a and the vinyl cloth 3 are removed.
6b, and then the protective cover 41 is inserted from below the sprinkler head insertion holes 42 formed around the sprinkler heads 34..., 34a, 34b.
Of the sprinkler heads 34 ..., 34a,
The sprinkler head 34 can be inserted into the sprinkler head 34, and the flange 41b can cover the edge of the sprinkler head insertion hole 42.
, 34a and 34b can be prevented from being damaged by hitting against another object.

[0042]

As described above, according to the present invention,
There is an effect that high-quality sprinkler equipment without a risk of water leakage can be easily and quickly constructed.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a sprinkler facility for an apartment house provided in a multi-story building.

FIG. 2 is a piping circuit diagram of a sprinkler facility for an apartment house.

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

FIG. 4 is an enlarged plan view of a main part on a specific floor of a multi-story building.

FIG. 5 is a vertical sectional side view of a main part of FIG. 4;

FIG. 6 is a vertical sectional side view of a pipe space for dwelling units.

FIG. 7 is an enlarged cross-sectional plan view of a main part.

FIG. 8 is an enlarged vertical sectional side view of a main part.

FIG. 9 is an enlarged vertical sectional side view of a main part.

FIG. 10 is a plan view of sprinkler equipment for dwelling units.

FIG. 11 is a longitudinal sectional side view of a main part of the sprinkler equipment for dwelling units.

FIG. 12 is a vertical sectional side view showing a mounting structure of a sprinkler head.

FIG. 13 is a perspective view of a mounting bracket for the sprinkler head.

FIG. 14 is a perspective view of a sprinkler piping unit according to the present invention.

FIG. 15 is a vertical sectional side view of a main part of a sprinkler piping unit showing another embodiment of the present invention.

FIG. 16 is a plan view of a conventional dwelling unit sprinkler facility.

[Explanation of symbols]

SU: sprinkler piping unit, 29: synthetic resin header, 34, 34a, 34b: sprinkler head, 35: synthetic resin pipe.

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Toshio Sakai 4-1-1-13 Honcho, Chuo-ku, Osaka City Takenaka Corporation Osaka Main Store

Claims (2)

[Claims] An original end of a plurality of flexible synthetic resin pipes, each of which is set to a predetermined pipe length in advance assuming the arrangement of a sprinkler head and to which a sprinkler head is connected at the tip, is made of synthetic resin. A sprinkler piping unit which is connected to a plurality of piping connection ports provided in a header, has completed a water pressure test of a connection portion, and is wound in a coil shape. 2. A sprinkler head having a cylindrical portion for fitting into the sprinkler head, a flange portion for concealing a hole edge of a sprinkler head insertion hole formed in a ceiling, and preventing a sprinkler head from coming into contact with another object. The sprinkler piping unit according to claim 1, wherein the protection cover having the protection frame is temporarily fixed to the sprinkler head.