JPH09165804A - Water supply piping and water supply piping method of plural storied building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance workability, aseismatic performance or the like of water supply piping of a multiple dwelling house or the like having plural stories by laying a pipe up to respective stories and/or water supply apparatus groups from plural branch ports of a branch header arranged in a water suuply main pipe by using distribution pipes. SOLUTION: For example, a multiple dwelling house having stores, a delivery pipe connected to a clean water main pipe 1 is once gathered to a water receiving tank 3, and a water supply main pipe 8 from the water receiving tank 3 is branched off into respective dwelling units by a header 11 existing in a basement part of the multiple dwelling house through a water supply pump 4. A pipe is directly laid in the middle without a branch part by distribution pipes 10 having a small diameter up to receiving ports of water supply pipes of the respective dwelling units of respective stories as water suuply apparatus groups 9 from respective branch parts of the branch header 11, and is connected to piping of the water supply apparatus groups 9 of the respective dwelling units or the like through water meters 5 arranged in the respective water supply apparatus groups 9. Therefore, a piping diameter per a single piece can be reduced, and a lightweight and flexible pipe can be used, and a pipe joint and a connecting part of the pipe can be reduced. Since the distribution pipes are formed of flexible pipes, aseismatic performance of the whole piping can also be improved.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an apartment house, a hotel,
It relates to water supply piping in multi-story buildings such as various buildings.

[0002]

2. Description of the Related Art The water supply of a multi-story building is such that a water supply main pipe is vertically installed in a pipe shaft portion of a building, and each water supply main pipe branches on each floor to construct a housing unit or office building. Supply water to places where water is used, such as the kettle room and toilet. Inner resin lined steel pipes and stainless pipes are used as the main water supply pipes and branch pipes. These pipes have a fixed length (approx. 5.5 m or 4
The m) pipe is brought into the site, and at the site, construction such as connecting the bent part and the straight pipe extension / branch part by joining such as flange connection is adopted.

FIG . 10 shows a water supply pipe for each dwelling unit of an apartment house, and FIG. 11 shows an example of a water supply pipe for an office building. Water from the main water mains 1 is received in the water receiving tank 3 via the lyophilizer 2 of the entire building. The main water supply pipe 8 runs vertically at the pipe shaft of the building, and the water in the water receiving tank 3 is pressurized by the pump 4 and sent to the main water supply pipe 8. This main water supply pipe has a branch 7-2 on each floor, and water is supplied from this branch to the water heaters and toilets of the residential units and office buildings on each floor. The water supply main pipe 8 requires a large amount of water in the lower part and a thin pipe in the upper part because the amount of water required decreases from the lower floor to the upper floor. In each dwelling unit, water is supplied to the dwelling unit piping 9 via the water meter 5 of each unit.

[0004]

In such a water supply pipe, there are many joints due to the joints of the standard length pipes and the joints of the bent portions, and the joints are also formed in places such as concealed portions where it is difficult to confirm water leakage. Once the water leaks, the damage may extend to multiple floors. Also, when replacing the main water supply pipes when repairing the piping inside the building, water must be suspended for the entire system during the construction period, and it is necessary to coordinate the entire water suspension period with all residents. Become. Further, it takes a lot of time and labor to join the main water supply pipe having a large pipe diameter on the site, the construction period is long, a large number of branch joints 7-2 are required, and the construction cost is increased. Also, because special techniques such as thread cutting and special tools must be used, there is a risk of water leakage due to inadequate construction due to lack of skilled workers.

[0005] Further, although piping is performed by checking the timing of the progress of the construction work in the building, this is a troublesome work of bringing in a long pipe into a building in the middle of construction and piping it. Minimizing the pipe shaft area is necessary to effectively use the limited floor area of the building, but as mentioned above, there are many branch joints in the main water supply pipe.
The turning radius of the tool during field welding must be secured between the pipe and the surrounding wall, resulting in dead space. In a concrete building, in order to run the pipe straight from the lowest floor to the highest floor, it is necessary to provide through holes that penetrate the floor and wall with accuracy each time concrete on the floor or wall of each floor is placed. There is. It is also necessary to wrap a heat insulating material around each pipe to prevent dew condensation.

Further, in the case of an apartment house, a water meter 5 is provided at the water receiving portion of each dwelling unit. In middle- and high-rise apartments, it is necessary to look around the water meters in each dwelling unit to perform metering of water supply, but in urban areas, install a remote meter so that metering can be concentrated. Guidance is given. Also, in such a multi-story building, since the water supply pipes to each dwelling unit are directly connected via the main water supply pipe, if water is used and it is suddenly stopped, a water hammer will occur, and May be transmitted to the faucet of the dwelling unit.

Therefore, the present invention provides a water supply pipe for a multi-story building, which has extremely good workability and maintainability, and can reduce the number of connection points, and can also improve earthquake resistance and water hammer resistance. The purpose is to do. Further, in the water supply pipe of the present invention, it is another object to provide a water supply pipe in which water meters for respective houses are centrally provided and meter reading work can be facilitated even in an area where a remote meter is required in an apartment house or the like. I am trying.

[0008]

In the water supply pipe for tap water, hot water, etc. according to the present invention, a branch header having a plurality of branch ports is provided in the main water supply pipe, and from the vicinity of each branch port of this branch header. Each level that uses water or a group of water supply and water supply equipment such as one dwelling unit is directly connected by separate distribution pipes. The branch header refers to a joint having a plurality of outlets corresponding to the inlet of water, for example, cheese of a screw type pipe joint may be used, or may be provided by combining cheese and a nipple of a screw type pipe joint, Further, a joint having an inlet and a plurality of outlets may be formed as an integral casting or injection molded product. As the distribution pipe connected to the branch header, a flexible pipe may be connected or a straight pipe such as a steel pipe for water supply may be connected. A water meter may be connected between the branch header and this distribution pipe. The water supply equipment group that directly supplies water from the branch header to the distribution pipe refers to a group unit of a plurality of water supply equipment such as dwelling units and offices with the same charge payment unit arranged in the building. In some cases, there are multiple water supply equipment groups on the same floor, or there is a case where one water supply equipment group is arranged over multiple levels. The branch header is installed on the lowest floor, the ground floor, the middle floor of the building, the rooftop, etc. according to the situation of the building, and water is supplied from each branch header branch port to the upper floor and lower floor via distribution pipes. Piped. Further, for example, in the case of a 10-story high-rise building, branch headers are installed at three locations for one building, and the lower branch headers are, for example, from the first floor to the fourth floor.
5 for other branch headers that do not cover water supply equipment groups
Water supply piping may be directly provided from each branch header via distribution pipes so as to cover 7 floors from the floor and 10 floors from the 8th floor. In this case, the pump for pumping the water stored in the water receiving tank may be covered by one pump, but three pumps may be installed to supply water for each branch header. In this case, a pump according to each pumping condition such as pumping height can be used, and water can be efficiently supplied. From each branch port of the branch header to each floor or water supply device group that uses water, one distribution pipe may be installed, or from two branch ports of the branch header to each floor or each water supply device group. Up to two may be supplied by loop piping with two distribution pipes. When these two distribution pipes are supplied with loop piping, the water will flow out stably even if a large amount of water is used at the water supply destination such as a faucet at the same time, and the distribution pipes will be supplied from the branch header. It is possible to use a pipe having a smaller diameter than that in the case of using the pipes each having one diameter. Further, by providing a water meter for each floor or each dwelling unit that uses water near the branch header, meter reading for supplying water from the branch header to each water supply equipment group can be concentrated. Also, in the case of a building with an elevated water tank, a branch header is attached to the delivery pipe from the elevated water tank, and each water supply equipment group that uses water from that branch port and each level are directly connected to each distribution pipe. You can also

The distribution pipe used in the present invention is preferably a flexible pipe, and a flexible synthetic resin pipe, for example, a polyethylene pipe or a polybutene pipe, or a soft copper pipe or a stainless steel corrugated pipe can be used. Suitable in terms of. A thin-walled stainless steel pipe for indoor piping that can be easily bent by a bender may be used, or a steel pipe for water supply may be used. Since this flexible tube can be covered with a tube having a relatively small diameter, it is flexible and lightweight, and can be wound in a drum shape and easily carried into the site and installed. In addition, by using the distribution pipe that has been wrapped with the heat insulating material in advance, problems such as dew adhered to the surface of the distribution pipe and corroding the building can be avoided, and the troublesome work of winding the heat insulating material after piping is performed. It can be resolved. In the above, the main water supply pipe to which the branch header is piped is a water supply pipe connected to the water mains, a pump pipe for pumping the water stored in the receiving tank from the water main pipe, and water pumped by the pump. It may be a delivery pipe from the elevated water tank for storing and supplying water to the elevated water tank of the building. In the piping method of the present invention, the step of connecting a branch header having a plurality of branch ports to the main water supply pipe, separate distribution pipes from each hierarchical water supply equipment group using water to the branch header in the pipe shaft or in the ceiling, etc. And a step of connecting each of these distributed pipes to each branch port of the header.

[0010]

1 and 2 show an embodiment of a water supply pipe for tap water or hot water according to the present invention. FIG. 1 shows an example of water supply piping in the case of an apartment house with a store. On the second to fourth floors, two dwelling units are arranged on each floor.
The delivery pipe connected to the clean water main pipe 1 is once stored in the water receiving tank 3, and the main water supply pipe 8 from the water receiving tank 3 passes through the water supply pump 4 and
The headers 11 in the lower floors and basement of the apartment house branch off to each dwelling unit. This header 11 may be provided outside the building as well as inside the building. Directly from each branch of the branch header 11 to the receptacle of the water supply pipe of each dwelling unit on each floor as one water supply equipment group 9, a distribution pipe 10 with a small diameter, for example 20A
The stainless steel corrugated pipe is connected to the pipe of each water supply device group 9 such as a dwelling unit through the water meter 5 provided in each water supply device group 9. Incidentally, the distribution pipe 10 may be added and piped by using a joint depending on the construction process, construction circumstances and the like. Further, in an apartment house or the like of a direct water supply system, the water receiving tank 3 and the water supply pump 4 are omitted, and the main water supply pipe 1 is directly connected to the main water supply main pipe 1, and the water pressure of the main water supply pipe 1 is used or It is also possible to provide a booster pump to increase the pressure and supply water to the water supply equipment group 9 of each floor in the building with the distribution pipe 10 via the branch header 11.

The embodiment shown in FIG. 2 is an example of an office building, and each level has one water supply equipment group 9, and as in FIG. 1, the main water supply pipe 8 from the water receiving tank 3 through the water supply pump 4. Is branched to each floor that uses water at a header 11 in the basement, and from this branch header 11 to one water supply equipment group 9 including a water heater, a toilet, etc., a distribution pipe 1 with a small diameter.
When it is 0, it is directly piped without a branch. FIG. 4 shows details of the water supply pipe of this embodiment. The end of the main water supply pipe 8 is connected to a branch header 11, and is branched into a plurality of small-diameter distribution pipes 10 by the branch header, and each is directly connected to a pipe of a water supply equipment group 9 such as a house without a branch portion. As the distribution pipe 10, a thin stainless pipe or a flexible stainless bellows pipe is used. The distribution pipe 10 is pierced through a through hole 13 previously put in the floor slab 15, and is fixedly supported on a wall, a floor or the like via a support fitting 12. FIG.
FIG. 6 is a view showing the details of the water supply pipe of still another embodiment. In the case of this embodiment, the branch header 11 connected to the end of the main water supply pipe 8 has an even number of branch ports, and the distribution pipes for supplying water to each water supply equipment group 9 are two distribution pipes 10, 1.
0 is provided, and in FIG. 5, loop piping is performed by passing through each water supply equipment group 9 such as dwelling units. Further, in FIG. 6, loop piping is provided at the receiving port of each water supply device group 9 such as dwelling units, and water is supplied from the receiving port into the dwelling unit through the water meter 5. Thus 2
When water supply pipes are used as loop pipes using one distribution pipe 10, even when a large amount of water is used by opening all faucets at the same time in each dwelling unit, water is supplied from two distribution pipes at the same time. The appearance of is stable. Also, for example, even if one of the two breaks down, maintenance can be performed without inconvenience such as water interruption at the supply destination, and further, each water supply can be performed from the branch header 11 with one distribution pipe. Small-diameter distribution pipe 1 compared to the case of piping to instrument group 9
Since 0 and 10 can be used, the piping can be easily constructed.

In this embodiment, the branch header 11 may be installed indoors or at a plurality of outdoor locations according to the situation of the building as shown in FIG. Further, it may be immediately after the water supply pump 4 for pumping the water in the water receiving tank, or the pumping pipe of the pump may be set up in the middle of a plurality of floors of the building and a branch header 11 may be provided in the middle of the plurality of floors. It may be provided so as to supply water to the upper floor and the lower floor via the distribution pipe 10. When an elevated water tank is installed on the rooftop, etc., the branch header 11 is attached to the delivery pipe from the elevated water tank.
Is installed, and a distribution pipe for supplying water to the lower floors is installed.
In these cases, by providing the water meter 5 between the branch header 11 and the distribution pipe 10 as shown in FIG.
It is convenient because the meter reading can be concentrated. FIG. 8 is a view showing a water supply pipe of still another embodiment of the present invention. In this case, the pump 4 for pumping water from the water receiving tank 3 is provided with a pump 41 for the lower floors of the building, 42 for the middle floors, 43 for the upper floors, and a pump having a capacity corresponding to the lifting capacity, and the water supply main pipe 81 of each pump, 8
Branch headers 11 are connected to the ends of 2, 83, respectively, and water is supplied to the water supply equipment group 9 such as each dwelling unit via the distribution pipe 10 connected to each branch port of each branch header 11. In this way, by installing a plurality of branch headers in the middle of the building and separately supplying water to the respective water supply zones, maintenance is facilitated and the pump can be efficiently supplied with water. Further, as shown in FIG. 9, sub-water supply main pipes 81, 82, and 83 are provided by branching the discharge-side water main pipe 8 of the pump 4 into a plurality of pipes, and the sub-water main pipes are connected to a branch header 11 installed on the middle floor of the building. Then, water may be provided from the branch header to the water supply device group 9 such as each dwelling unit via the distribution pipe 10. In this case as well, maintenance becomes easy as in the above case.

Next, a construction method for this water supply pipe will be described. 1. Forming work, marking on the formwork panels such as floors, walls, and beams to insert the pods (sleeves) to be inserted before placing concrete. The formwork panel may move a few centimeters due to vibration when placing concrete. Based on the ink stick, the pod is fixed to the formwork panel. The sleeve used at this time does not need to be large in consideration of accuracy error, and a flexible tube to be used can be inserted and may have a diameter capable of filling the gap. 2. Concrete pouring work 3. Form removal work The sheath of the sleeve is a combustible material, so remove the sheath. 4. Plumbing Concrete will be marked on the floor, walls, beams, etc. for plumbing. As shown in Fig. 3, the long and flexible distribution pipe 10 wound in a drum shape is carried into the site, but it is lightweight and compact, so it is easy to carry and carry in, and there is no need for processing such as a standard length pipe. Is. While extending the flexible distribution pipe wound in a drum shape, the through hole is made to penetrate from the branch header to each floor pipe and each dwelling unit pipe. Pipes will be supported and fixed to the walls on each floor using support fittings. The distribution pipe 10 is adjusted to an appropriate length, connected to each floor pipe and each dwelling unit pipe using a joint, and a heat insulating material for dew prevention is wound around the distribution pipe. In addition, if the distribution pipe is preliminarily attached with the heat insulating material on the outer peripheral portion, the heat insulating material winding work for dew prevention can be omitted. Also,
When a non-combustible heat insulating material is attached, the non-combustible treatment work in the vicinity of the penetration portion of the floor or wall of the fireproof compartment is omitted. In the present embodiment, the tap water supply pipe has been described as an example, but the present invention is not limited to tap water, and naturally, hot water supply pipes for supplying hot water can also be used.

[0014]

The following effects can be obtained by the present invention. 1. Since water is supplied directly to each water supply equipment group such as each floor in the building or each dwelling unit by one or two distribution pipes, maintenance such as when a failure occurs can be easily performed. 2. The diameter of each pipe is smaller than that of conventional pipes, so lightweight and flexible pipes can be used, and pipes wound in a drum shape can be used for delivery to the site and pipes. Support during construction is easy, and the construction period and construction cost can be reduced. 3. Since the distribution pipe is a long pipe, the connection at the site is basically only the joint with the branch header part and each floor pipe or each dwelling unit pipe, so there are few pipe joints and pipe connection parts,
The construction period can be shortened without any trouble and the construction cost can be reduced. 4. In addition, since the number of connection points is basically small, the number of water leakage points is basically reduced, and even if water leakage occurs, it is easy to check and the number of connection points can be limited to locations with less damage. 5. In principle, since there is no joint at the bent portion, straight pipe extension, or branch portion, the turning radius of the tool at the time of field joining between the pipe and the surrounding wall is unnecessary, and the pipe is installed in contact with the wall. Therefore, the piping space can be compactly accommodated.

6. It is possible to easily supply water from the branch header to each water supply equipment group in the building by loop piping, and to perform stable water supply. 7. Flexible and flexible pipes can be used as distribution pipes, so even if there are some errors in the positions of the through holes and sleeves that penetrate the floor and walls, it is possible to carry out the pipe construction. Is easy. 8. The water supply pipes are divided for each floor and each water supply equipment group, so when replacing pipes for building renovation, etc., it is possible to replace each floor and each dwelling unit, without disturbing other dwelling units etc. Repair work can be done. Also, in new piping work, the construction process can be easily adjusted with the construction work inside the building. 9. When a plurality of water supply pumps are provided, the capacity of each pump can be supplied by a pump having a capacity according to each water supply condition such as the lift of a building, thereby improving the pump efficiency and saving energy. 10. When the distribution pipe is a flexible and flexible pipe, it is possible to absorb and mitigate the water hammer phenomenon that accompanies a sudden closure of a water tap or the like. In addition, the entire pipe has excellent earthquake resistance. 11. By providing a water meter near the branching port of the header, meter reading of the water meter can be concentrated for each water supply equipment group, and the meter reading work becomes easy. 12. Since a distribution pipe with a small diameter can be used, it is possible to use a pipe pre-wound with heat insulating material for the distribution pipe, and the work of winding heat insulating material for dew condensation and the incombustible treatment work near the penetration part of the fire prevention compartment can be performed. Omitted.

[Brief description of the drawings]

FIG. 1 is an embodiment when the present invention is applied to an apartment house.

FIG. 2 is an example when the present invention is applied to an office building.

FIG. 3 is a view of a flexible tube used in the present invention wound.

FIG. 4 is a detailed view of the water supply pipe according to the embodiment of the present invention.

FIG. 5 is a detailed view of a loop water supply pipe according to another embodiment of the present invention.

FIG. 6 is a detailed view of a water supply pipe having a loop pipe according to another embodiment of the present invention.

FIG. 7 is a diagram showing an embodiment in which the branch header of the present invention is provided outdoors.

FIG. 8 is a water supply piping system diagram showing another embodiment of the present invention.

FIG. 9 is a water supply piping system diagram showing still another embodiment of the present invention.

FIG. 10 is a conventional water supply pipe for an apartment house.

FIG. 11 is conventional piping for an office building.

[Explanation of symbols]

 1 Water main 3 Water receiving tank 4 Water supply pump 8 Main water supply pipe 9 Water supply equipment group 10 minutes pipe 11 Branch header

Front Page Continuation (72) Inventor Shintetsu Kimura 1043 Shimoyama, Onigagakuji, Tsukuba, Ibaraki Prefecture 1 Kumagai Technical Research Institute, Inc. (72) Inventor Mitsuyuki Inagaki 2 Daifuku, Kuwana-shi, Mie Hitachi Metals Co., Ltd. In Kuwana Plant (72) Inventor Kazuaki Morita 2 Daifuku, Hitachi Metals Co., Ltd., Kuwana City, Mie Prefecture Kuwana Plant (72) Inventor Shinro Hoshino 2 Daifuku, Kuwana City, Mie Hitachi Metals Ltd., Kuwana Plant

Claims (11)

[Claims] 1. A branch header having a plurality of branch port is provided in the water supply main pipe, each layer and / or one of a building that uses a plurality of minute <br/> Toki port or et water branch header One
A water supply pipe for a multi-story building, characterized in that the water supply pipes are directly connected to the supply water supply equipment group using the distribution pipe. 2. The water supply pipe for a multi-story building according to claim 1, wherein the distribution pipe from the branch header is a water supply pipe for an upper floor and / or a lower floor of a building. 3. Water from a plurality of branch ports of the branch header
Water supply for each level and / or one supply of buildings using
Water supply pipe by looping with two distribution pipes up to the unit
The plurality of floors according to claim 1 or 2 , characterized in that
Water supply piping for multi-storey buildings. 4. A plurality of branch headers are arranged on the building.
The branch pipe through the branch port of each branch header.
Water distribution to each floor and / or each water supply equipment group
A plurality of pipes according to claim 1, characterized in that they are piped.
Water supply piping for story buildings. 5. Water distribution from each branch port of the branch header
The distribution pipe being used is characterized by using a flexible pipe.
The water supply pipe for a multi-story building according to claim 1 . 6. The water supply pipe for a multi-story building according to claim 5, wherein the flexible distribution pipe is a stainless steel corrugated pipe. Wherein said distribution pipe, water supply pipe of the plurality of layers building of claims 1 to 6, wherein the pre-heat insulating material on the outer peripheral portion is mounted. 8. A main water supply pipe connecting the branch header
Is from a water pipe connected to the water main or from the water main.
Pump pipe for pumping water stored in water tank
The multi-story building according to claim 1, characterized in that
Water supply piping. 9. The main water supply pipe collects water pumped up by a pump.
Delivery from the elevated water tank that stores and supplies water to the elevated water tank of the building
It is a pipe, The water supply piping of the multi-story building of Claim 1 characterized by the above-mentioned. 10. provided the amount condenser between the distribution pipe and the branch port of the branch header, the distribution pipe through the water meter
The water supply pipe for a multi-story building according to any one of claims 1 , 2 and 4 to 9, characterized in that the water supply pipe is provided by. 11. A process of connecting a branch header having a plurality of branch ports to a main water supply pipe, each layer using water, and / or
Or separate distribution pipe from each water supply equipment group to the header
Step of the pipe through the pipe shaft in these minute
Water supply pipe method multilevel buildings, characterized in that it comprises a step of connecting pipes each respective branch port of the header.