JP3027920B2 - Piping unit and its installation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a nuclear power plant,
The present invention relates to a piping unit constituting a piping route laid in a petrochemical refining plant and the like and an installation method thereof.

[0002]

2. Description of the Related Art Generally, in a nuclear power plant, a petrochemical refining plant and the like, various pipes for passing liquids, gases or cables to be handled are bundled and laid as shown in FIG. A piping path H is provided. As shown in the figure, the piping path H is formed by sequentially arranging and connecting piping units c in which respective piping members b are attached to a substantially rectangular steel frame a in the length direction. Furthermore, these piping units c
Is supported on a plurality of pillars d so as to have a predetermined height for easy inspection and repair work.

[0003]

Since the piping unit c is manufactured in advance at a factory in accordance with the specifications, after transported to the plant site by land transportation or sea transportation, a hoist or a bogie is used. Has to be transported to a predetermined position.

However, since the piping unit c may have a weight ranging from several tons to several tens of tons in some cases, it is necessary to use a large number of large hoists for transportation, and the installation period is long. In addition, there is a drawback that it requires a large cost. On the other hand, as shown in FIG. 4, in the method using the cart g, since the pillars of the piping unit c need to be lifted from the ground by a predetermined height during transportation, the temporary receiving unit corresponding to the size of the piping unit c is required. Since the mount e is required, there is a drawback that, as in the method using the hoist, a great cost is required, and the temporary mount e is wasted after use.

Therefore, the present invention has been devised to solve the above-mentioned problem, and an object of the present invention is to provide a novel method that can easily and inexpensively install a piping unit constituting a piping path at a predetermined position. It is to provide a piping unit and a method of installing the same.

[0006]

In order to achieve the above object, a first invention is to provide a steel frame having a plurality of piping members attached thereto.
In a piping unit in which a frame is supported by a plurality of pillars, the steel frame is provided so as to be vertically movable with respect to the pillars,
The lower end and the upper end of these pillars are provided with temporary fixing means for temporarily fixing the steel frame, respectively. After temporarily fixing the frame to the lower end of the pedestal, placing this steel frame portion on a trolley, and transporting the steel frame to a predetermined position with the lower end of the pedestal floating,
The fixing of these pillars is released, and the lower ends thereof are landed. Thereafter, the steel frame is raised along the pillars and fixed to the upper ends of the pillars.

[0007]

According to the present invention, as described above, the steel frame is provided so as to be able to move up and down with respect to the pillars, and the steel frame is temporarily fixed to the lower end and the upper end of the pillars. By temporarily fixing the steel frame to the lower end of the pillar by the temporary fixing means, and directly placing the steel frame portion on the bogie, as in the related art, The entire piping unit can be transported to a predetermined position without using a temporary receiving stand. Then, upon arrival at the site, the temporary fixing of the pillars is released, and the lower ends thereof are landed.Then, the steel frame is raised along these pillars, and the upper ends thereof are fully welded by welding or the like. By fixing it, it can be installed on the site.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows an embodiment of a piping unit 1 according to the present invention. As shown in the figure, this piping unit 1 has a steel frame 2 formed in a substantially rectangular
A plurality of piping members 4 are attached by bolts 8 and the like, and constitute a part of the piping path H described above. On both sides of the steel frame 2, a plurality of pillars 3 made of H steel material are provided along a length direction for supporting the steel frame 2 at a predetermined height from a plurality of bolts 9 a and the like. It is detachably attached by temporary fixing means 9.

In order to transport and install the piping unit 1 having such a structure at a predetermined position, first, as shown in FIG. After being temporarily fixed to the lower end and transporting the bogie 5 to the lower surface of the steel frame 2, the steel frame 2 is fixed by a jack (not shown) provided on the bogie 5.
Is lifted, the lower ends of the pillars 3... Float above the ground by a predetermined height, and the entire piping unit 1 is completely placed on the carriage 5. Thereby, the piping unit 1 can be transported to the installation position without using a temporary support stand for floating the pillars 3 as in the related art.

Next, when the piping unit 1 is transported to the installation site in this way, as shown in FIG. 2 (A), elevating means 10, for example, the upper end of the steel frame 2 on which the pillars 3 are located. One end of each of the wires 7 is connected to a hook 6 provided on the portion, and a temporary support member 11 having a plate shape is provided at the upper end of each of the pillars 3. And the other end is connected to a winch or the like (not shown) fixed to the ground side. The temporary support member 11 has a pair of rollers 5a,
5a is provided so that the load applied to the wire 7 is transmitted to each of the pillars 3... And the wire 7 is smoothly guided.

Next, as shown in the figure, temporary fixing means 9 for temporarily fixing these pillars 3 to the steel frame 2 side.
.. Are removed, and the lower end of each pillar 3... Is mounted on the ground, for example, a concrete base 1.
After the landing, the steel frame 2 is raised along the pillars 3 by driving the respective lifting / lowering means 10 and winding up the wire 7. Then, as shown in FIG. 2 (B), when the steel frame 2 reaches the upper end of the pillar 3, the steel frame 2 is fixed by temporary fixing means or by welding or the like. After the truck is fully fixed to the upper end, the carriage 5 and the lifting / lowering means 10 that lifts the steel frame 2 are removed, thereby completing the installation work. Then, the carriage 5 is unloaded and returned to the site, and is again used for transporting the next piping unit 1.

As described above, according to the present invention, the steel frame can be raised and lowered with respect to the pillar, and can be temporarily temporarily fixed to both the lower end and the upper end of the pillar. In addition, a temporary receiving stand for floating and transporting the piping unit or a plurality of large hoists are not required. The present invention is not limited to the above embodiment. For example, rails are formed on the pillar 3 side and the steel frame 2 side, respectively, and the steel frame 2 is smoothly moved up and down. Alternatively, an elevating device such as a winch may be integrated into the steel frame 2 as the elevating means, or a rack and pinion method may be used.

[0014]

As described above, according to the present invention, unlike the prior art, there is no need for a temporary receiving stand or a large-sized hoist, so that the installation cost and labor of the piping unit are reduced, and the work safety is improved. Has excellent effects such as shortening the installation period.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention.

FIG. 2A is a front view showing a state before the steel frame is raised. (B) is a front view which shows the state which raised the steel frame and installed it in the upper end part of a pillar.

FIG. 3 is a schematic perspective view showing an example of a piping path formed by arranging conventional piping units.

FIG. 4 is a front view showing an example of a conventional method of transporting a piping unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Piping unit 2 Steel frame 3 Pillar 4 Piping member 5 Dolly 9 Temporary fixing means

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoshiki Yaso 3-2-16-1 Toyosu, Koto-ku, Tokyo Ishikawa-jima-Harima Heavy Industries, Ltd. Toyosu General Office (56) References JP-A-62-268235 (JP , A) JP-A-57-61885 (JP, A) JP-B-54-6726 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16L 1/00

Claims (2)

(57) [Claims] 1. A steel frame to which a plurality of piping members are attached.
In a piping unit in which a frame is supported by a plurality of pillars, the steel frame is provided so as to be vertically movable with respect to the pillars,
A piping unit comprising temporary fixing means for temporarily fixing the steel frame at the lower end and the upper end of these pillars. 2. A method for installing a piping unit according to claim 1, wherein the steel frame is temporarily fixed to a lower end portion of a pillar, and the steel frame portion is placed on a carriage. After transporting the lower ends of the pillars to a predetermined position in a floating state, the anchors of the pillars are released and the lower ends thereof are landed, and then the steel frame is raised along the pillars. A method of installing a piping unit, characterized by being fixed to the upper ends of these pillars.