JPH03260228A - Installation method for piping units in buildings - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for installing a piping unit in a building in which a unit is installed with a water supply and drainage pipe, etc. necessary for a multi-story building such as a hotel or an apartment complex. be.

[Prior Art] Multi-story buildings such as hotels, apartments, and condominiums require a large number of pipes for water supply, hot water supply, and wastewater or circulation for the residences and dwelling units on each floor.

Conventional piping work was performed as shown in FIGS. 3 and 4.

Figure 3 shows an example of the general arrangement of water supply and drainage pipes in a building. 1 is a vibe shaft installed in the building, 2 is a vertical main pipe installed inside the building, and 3 is a branch installed on each floor. Department.

Here, the vertical main pipe 2 is a straight pipe of a fixed length cut to a length corresponding to the height of each floor, and its outer periphery is coated with a heat insulating material as required.

In these piping operations, straight pipes of a fixed length are first connected in sequence and installed inside the vibe shaft 1, and then branch pipes are connected at required positions on each floor. If there are a plurality of vertical main pipes 2, these steps will be repeated as many times as there are, so a large number of man-hours will be required for piping work.

Since low-temperature to high-temperature water supply and drainage are transferred into these vertical pipes 2, they are constantly subjected to the stress of expansion and contraction. Therefore, the vertical main pipe 2 is provided with various expansion and contraction devices for each predetermined length so that expansion and contraction due to temperature changes can be easily absorbed.

These expansion and contraction devices include arc-shaped expansion and contraction absorption units, bellows-shaped expansion and contraction units, etc., but installing these makes piping work more complicated.

The Breno/Bue method of piping has been proposed as a method for constructing all piping at such multi-story building sites.

FIG. 4 shows an example of a conventional piping prefabrication method.

In FIG. 4, 4 is an upper floor in a multi-story building, 4' is a lower floor, 5 is a vertical main pipe 2, and 6 is an intermediate connecting knit.

This intermediate connection unit 6 is provided with an intermediate branch part 7 as required, and the next pipe is inserted into the intermediate connection unit terminal part 8, and after adjusting the length, it is installed in advance by a predetermined method. A rubber backing (not shown) is tightened to seal.

The vertical main pipe 5 is one whose outer periphery is coated with a heat insulating material or the like in order to preserve hot water and the like. One end of the pipe is connected to the intermediate connection unit 6 by screwing or the like, and the plurality of intermediate connection units 6 are further fixed together with a connecting jig 9.

During on-site piping work in a multi-story building, first install the intermediate connection unit 6 on the lower floor 4' where the cable is to be installed, and then connect the intermediate connection unit 6 installed on the lower floor 4' to the upper floor. Insert the intermediate connection unit 6 to be installed in 4,
Then adjust its length and fix it in position. Next, the intermediate connection unit terminal portion 8 is sealed with a rubber gasket that has been built in in advance.

Thereafter, by repeating these operations in the same way, piping can be installed extremely easily and with little effort.

[Problems to be Solved by the Invention] As described above, conventional piping work is performed by connecting branch piping to each floor from the vertical main pipe 2 erected on the vibrator shaft 1 of a multi-story building.

However, these piping operations are difficult due to the narrow vibration shaft 1
The work efficiency is extremely poor because the process is carried out internally, and moreover, it requires a large number of man-hours as each pipe has to be connected one by one.

Furthermore, if the threaded connection method is used for these connection works, troublesome sealing work such as thread cutting and screwing of the pipe end is required, and if the welding connection method is used, the vibration Special skills such as welding inside the shaft are required.

In addition, in the conventional piping method, since an expansion/contraction absorbing unit for the pipe is essential, there are disadvantages such as extra man-hours, space, and material costs required for installation.

The conventional piping method is based on the method of sequentially stacking pipes with a length corresponding to the height of each floor, but since the actual height of each floor has some length, the vibe unit 6 is slightly longer. It is necessary to prepare a pipe and adjust the insertion length of the pipe at the joint with the intermediate connection unit 6.

These joints are sealed by tightening and fixing the outside of the insertion tube with a rubber band, but this sealing method prevents the tube from sliding because the amount of expansion and contraction of the tube is small when the pressure is low and the temperature is low. ; is small and can absorb expansion and contraction; however, when transferring low-temperature to high-temperature and high-pressure fluids into pipes, such as in high-rise buildings, the amount of expansion and contraction of the pipe becomes large, and the rubber backing repeatedly slides due to the expansion and contraction of the pipe. The present invention, which has the disadvantage of losing its sealing function in a short period of time due to abrasion, has been developed based on this point, and its purpose is to eliminate the drawbacks of the prior art described above and to By unitizing the piping and installing them all at once, it is possible to save labor, and by using an intermediate connection unit, the piping work can be done easily and quickly without relying on skilled workers. The object of the present invention is to provide a method for installing piping units in buildings that can eliminate the need for piping units.

[Means for Solving the Problems] The gist of the present invention is to install a vertical main piping unit, which is formed by combining a plurality of pipes cut in advance to lengths equal to the height of each floor, in a vibe shaft, On each floor, an intermediate connection unit having a connection part for branch piping, arranged horizontally and tiltably supported by the building frame at the middle part, is installed, and then upper and lower ends are installed at both ends of the intermediate connection unit.
The purpose is to insert the vertical main piping units below.

[Function] The installation method of the piping unit in a building of the present invention is to install the vertical main piping unit all at once in the vibe shaft, install an intermediate connection unit on each floor, and install upper and lower pipes at both ends of the intermediate connection unit. By inserting the lower vertical main piping units individually, piping work can be done quickly and easily without relying on skilled workers. Moreover, after the piping is completed, the intermediate connection unit is placed horizontally and can be tilted to the building frame in the middle. Since it is supported, it is possible to eliminate the need for a special expansion and contraction absorption unit, which was previously necessary to install.

In other words, the expansion and contraction of the pipe according to the present invention can be effectively absorbed by tilting the intermediate connection unit around the support point, thereby eliminating the need for a special expansion and contraction absorbing device. It lies in what you can do.

In other words, the present invention shifts the vertical axes of the upper and lower pipes for each floor, and tilts the tangent line connecting the lower and upper ends of the pipes from the horizontal downward to the right or upward to the right according to expansion and contraction, thereby adjusting the vertical direction of the pipes. can effectively absorb the amount of expansion and contraction.

Moreover, in the present invention, the distance between the tubes due to the difference in the length of the tube in the vertical direction is
tr; The difference in amount can also be easily adjusted by proportionally changing the position of the rotation axis of the horizontal tangent.

In addition, since the change in the installation angle between the pipe and the tangent line is very small, the change in the longitudinal position of the rubber backing tightening section is small, and expansion and contraction can be skillfully absorbed with a slight axial tilt.
As a result, the reliability of the seal portion can be significantly improved.

[Example] Next, an example of the method for installing a piping unit in a building according to the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory side view of an embodiment of the method of installing piping units in a building according to the present invention, viewed from the arrangement direction.

In FIG. 1, 4 is an upper floor, 4' is a lower floor, 5 is a vertical main piping unit, 6 is an intermediate connection unit, 7 is an intermediate branch, and 8 is an end of the intermediate connection unit.

The vertical main pipe piping units 5 of the upper and lower floors are inserted into the intermediate connection unit terminal part 8, the lengths of which are adjusted, and finally they are tightened with built-in rubber backings (not shown).

As is clear from FIG. 1, the feature of the method of installing piping units in buildings according to the present invention is that the shape of the intermediate connection unit 6 is not linear as in the conventional case, but is arranged vertically at both ends of a horizontal section of a predetermined length. It has a crank shape with a connecting part, and when installed, the direction is to be installed in opposite directions on each floor.

Therefore, in the method for installing piping units in buildings according to the present invention, the installation axis of the vertical main pipes is shifted by the length of the horizontal portion of the intermediate connection unit 6 for each floor.

In addition, this intermediate connection unit 6 is placed on a support member 1o passed through a through hole on each floor, and can be tilted up and down using a support member 10 as a fulcrum by a support metal fitting 11.

Here, if the height L of the upper and lower floors is constant, if the support point 10 is provided at the midpoint of the horizontal length p, the intermediate connection unit can easily tilt up and down in accordance with the expansion and contraction of the vertical pipe.

Figure 2 diagrammatically shows this situation. If AB is the horizontal length g, and C is the support point, the length of the tube on the lower floor side is Ll, and the length of the tube on the upper floor side is L2, then the upper part of the temperature Each tube is △L
If l and △L2 are extended, the horizontal parts will be A'', B-, and L
If it is L-L2, ji! It becomes 1-42. Also, if the lengths of the pipes on the upper and lower floors are different, the support point C should be Ll /L2
-N 1 /(12) If it is provided at a point that has the relationship: -N 1 /(12), the horizontal portion can be tilted without applying excessive force.

The inclination θ between the axis of the vertical pipe and the axis of the connection part of the intermediate connection unit 6 is small in absolute value, as shown in the following example of calculating the inclination during expansion and contraction of the pipe, so it is difficult to apply it to the rubber backing seal. It will not cost anything.

[Example of inclination meter when pipe expands and contracts] 1. Height of each floor...
...3m2, horizontal length of intermediate connection unit...
...0.3m3, 9g degree change...
··········································································································································································．・・・
・・・1.5mmmm copper pipe・・・・・・・・・・・・
・・・・・・・・・2.13mm plastic pipe・・
・18.0mm5, angle of inclination between the vertical piping axis and the connection unit connection axis Iron pipe・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・0.57＠Copper tube・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・1.07゜Plastic Vibrator・・・・・・6.80' Although the embodiments of the present invention have been described above, the present invention is of course The present invention is not limited to the embodiments, and can be modified in various ways within the scope of the claims of the present invention.

[Effects of the Invention] The method for installing piping units in buildings according to the present invention can produce the following excellent effects and is useful in industry.

(1) Since piping members can be made into units, these piping units can be transported to the building site, and piping can be done quickly and easily, it is possible to significantly save labor and shorten the construction period.

(2) Work at building sites is simple, such as stacking and inserting piping units, tightening backings, etc., and there is no need to rely on skilled workers with special piping skills.

(3) Piping errors due to the height of each floor can be easily absorbed by the insertion length, so precise measurement and adjustment work on site can be omitted.

(4) Since there is no need to install various expansion joints in the piping, piping work can be greatly simplified and piping costs can be significantly reduced.

(5) Expansion and contraction of the tube can be effectively absorbed by replacing it with a gentle tilt of the tube axis.

(6) Even if the length of the pipe to be installed differs due to the height displacement of each floor, expansion and contraction of the pipe can be skillfully absorbed by simply changing the position of the support point.

[Brief explanation of drawings]

Fig. 1 is an explanatory side view showing an example of the method for installing piping units in buildings according to the present invention; FIG. 3 is an explanatory diagram showing a general piping method for water supply and drainage pipes in a conventional building, and FIG. 4 is a side explanatory diagram showing an example of a conventional prefabricated construction method. 1: Vibe shaft, 2: Vertical main pipe, 3: Branch, 4: Upper floor, 4: Lower floor, 5: Vertical main pipe piping unit, 6: Intermediate connection unit, 7: Intermediate branch, 8: Intermediate connection Unit terminal part, 9: Joining jig, 0: Supporting material, : Supporting metal fitting. Representative applicant: Hitachi Cable Co., Ltd. Koumeen■

Claims (1)

[Scope of Claims] 1. In the installation method of a vertical main piping unit formed by unitizing the vertical main pipes of water supply and drainage piping in a building, the vertical main pipe unit has a predetermined length in the horizontal direction and has vertical pipes at both ends thereof. It is characterized by using an intermediate connection unit which has a connection part with the main pipe and whose intermediate part is tiltably supported on a building frame, and connects the upper and lower vertical main pipe piping units to the connection part of the intermediate connection unit. Installation method for piping units in buildings with 2. The architecture according to claim 1, wherein tiltable support points are placed at points that divide the horizontal length of the intermediate connection unit in proportion to the length of the vertical main piping units that are connected vertically. Installation method for piping units in objects. 3. The method for installing a piping unit in a building according to claims 1 and 2, characterized in that an intermediate connection unit provided with a branch pipe connection part is used. 4. The method for installing a piping unit in a building according to claim 1, characterized in that one or more vertical main piping units are prepared in a prefabricated manner and assembled at a building piping site.