JPS6062504A - Method of constructing boiler - 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 The present invention relates to a boiler construction method (commonly known as a boiler construction method) in which the steel frame is constructed while incorporating ducts, piping, and equipment installed in the steel frame into the steel frame. −
This is related to the Mitsud method.

Conventionally, when constructing a boiler, after the steel frame had been erected, the pipes, piping, and equipment were pulled into the steel frame using wires, etc., and installed in conjunction with the installation of the pressure-resistant parts of the boiler body. However, in such conventional construction method,
The installation of the side pressure section of the boiler main body and the installation of various parts such as ducts, piping, equipment, etc. were complicated, and when pulling in, it was not possible to make large blocks, but small parts were brought in, assembled and installed, so work on raised floors was difficult. In many cases, the drawbacks were that safety was poor and installation took a long time.

The present invention has been made in view of the above-mentioned viewpoints, and an object of the present invention is to provide a boiler construction method that enables the boiler to be constructed in a short period of time.

According to the present invention, in parallel with the erection of the boiler steel frame, members such as ducts, piping, equipment, etc. are regarded as steel frame members and incorporated into the steel frame in accordance with the erection of the steel frame, and the boiler steel frame is constructed. are doing.

Therefore, since the above-mentioned members are completely inserted into the steel frame when the steel frame erection is completed, the installation of the boiler main body is not complicated with the construction work, and the construction period can be significantly shortened. or,
Since the above-mentioned members can be made into large blocks in a factory or on the ground and then brought in, the need for work on elevated floors is reduced and safety is improved accordingly.

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an example of a first embodiment of the present invention in which a tactile system is also installed when a steel frame is demolished. In Figures 1 and 2 (11 is a column, (2) is a beam, (3) is a small beam, (4) is a truck crane, (5) is a beam (2) or (
3) is a conventionally known bunker attached to the lower surface of the beam (2) by a worker (6) when it is temporarily placed on the ground, and (7) is a duct.

The beam (2) or (3) to be located on the upper surface of the tough l-f force is attached with a hanger (5) by a worker on the ground.
1-Rack crane (4) lifts the column (1)
) is attached to the beam (2) or (3).
), leave the front part unattached so as not to interfere with the boom of the truck crane (4).

Next, lift the duct (7) of a predetermined length placed on the ground L from the truck crane (4) and insert the duct into the steel pipe from the side a few meters away from the beam (2). Temporarily place the duct l-+71 on the required floor surface of the ironworks that has been installed, and then lift the beam (2) with the hanger (5) attached from the ground using the truck crane (4). 1), or attach it to the front side of the hanger (5) if necessary.
) with the small beam (3) attached to the truck crane (4)
After lifting it up and installing it between the beams (2+ +21), the truck crane (4) lifts up the duct (7), which is temporarily placed on the required floor surface inside the steel frame, again and attaches it to the beam (2) and small beam (3). Hanger (5) is hung from an O-shaped set.Therefore, the hanger itself can be attached to the beam on the ground, eliminating the need for a scaffolding like in the past, and the duct can be installed using steel frame construction. Since lifting can be carried out using heavy equipment such as a commercial truck crane, it is now possible to install ducts in three-dimensional blocks at a factory or on the ground, instead of the conventional method of creating three-dimensional structures after taking in the takt time of each surface. and the installation process can be shortened.

FIG. 3 shows a second embodiment of the present invention, and shows an example in which a vertically long (approximately 2411 I) equipment such as a steam/water separation tank can be installed. In the figure, (8) is a steam/water separation tank.

After erecting one or two sections of the steel frame so that the height of the steel frame is 20 m or more, the steam/water separation tank (8) placed horizontally on a trailer (not shown) is installed, and the trailer is moved to the location and the trailer is released. The main crane (1゛ rack crane (4)) and the auxiliary crane are used to cut the ground, and the truck crane (4) is used to lift it up, and the installation is carried out vertically directly below the position.
Wire rope (9) l Trowel Secure the steam/water separation tank (8) to the steel frame and temporarily store it. After that, the rest of the steel frame is erected, and the steam/water separation tank (8) is lifted to a predetermined level and fixed to the steel frame.

FIG. 4 shows a sixth embodiment of the present invention, in which a single heavy pipe is installed parallel to a small beam (3). In the figure, αυ is a scaffold chain, (6) is a scaffold, C13 is a band,
0→ is a wire with a stand.

Similar to Figure 2, the bunker (5) is attached to the small beam (
3) is hoisted by a truck crane (4), etc. and attached to a specified beam, and a scaffolding chain αη having a force α is suspended from the small beam (3). Piping 0 with a raised band attached to the position is lifted again by the 1-rack lane (4) and placed under the small beam (3), and the worker (6) lifts it onto the scaffold (6). , and fix the hanger (5) to the hand σ field attached to the pipe (It), without removing the wire α → from the pipe αe. This completes the lifting of the pipe θ. Figure 5 shows the fourth embodiment of the present invention, in which the small beam (3) and the pipe
(!: Indicates a case where they intersect. In this case, as in the third embodiment, the hanger
) attached on the ground (3) is transported by a truck crane (4).
), etc., and attach the specified beam (2)
3) 1) The scaffolding chain 0υ connected to the scaffolding is suspended, and the piping 00), which has been temporarily placed on the lower floor inside the steel frame, is lifted again using the truck crane (4) and the small beam (3) on the upper floor is lifted up again using the truck crane (4). ), and the worker (6) stands on the scaffolding q2 and attaches the hanger (5) to the pipe 001.
Fix it in the Q field, remove the wire with stand (14) from the pipe 0, and then install the rest of the beams on the upper floor.

FIG. 6 shows a fifth embodiment of the present invention in which the piping 0I for a single heavy object is a vertical piping. After installing the upper floor beams (2) and small beams (3) with hangers (5) attached on the ground as shown in Figure 2, hang the scaffolding @ as shown in the figure and place the truck crane (4) with a trowel. The worker (6) hangs the pipe Ql vertically from above, fixes the hanger (5) to the bracket (E) attached to the pipe pipe, and removes the hook of the truck crane (4).

FIG. 7 shows a sixth embodiment of the present invention, in which a beam (2), a small beam (3)
, a unit (g) in which piping (IO1 valve (a), handrail A71, etc.) was assembled in a factory or on the ground using a truck crane (4)
Lift the beam (2) to the joint of the support column (1) using ports, etc., and bolt the small beam (3) to the joint of the beam (2) that has already been erected. This is an example of connecting with .

FIG. 8 shows a seventh embodiment of the present invention, in which piping blocks (one of which is assembled on the ground or in a factory) with piping αυ, valves, etc., are temporarily placed on the required floor surface inside the steel frame using a trunk crane (4).
After assembling the piping block OI installation floor beam +2) 4°, the temporarily placed piping block QO is re-lifted to the required position using the trunk crane (4) and installed under the beam (2). .

2. In each of the figures, the same parts are denoted by the same reference numerals, and the present invention is not limited to the above-described embodiments, and various changes may be made without departing from the gist of the present invention. Of course.

According to the boiler construction method of the present invention, the above-mentioned components are completed within the steel frame when the steel frame erection is completed, so the erection of the boiler body is not complicated with the construction work, and it can be installed within the steel frame. However, there are no steel members that get in the way like in the past.
Since the above-mentioned parts can be taken in in advance during the collection, it is possible to make large flocks of the above-mentioned parts, which makes it possible to significantly shorten the construction period, and because all the bunker beams and beams can be attached on the ground, the height is lower. Various excellent effects can be achieved, such as reduced labor and improved safety.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams of the first embodiment of the present invention, and the third
The figure is an explanatory diagram of the second embodiment of the present invention, FIG. 4 is an explanatory diagram of the sixth embodiment of the present invention, FIG. 5 is an explanatory diagram of the fourth embodiment of the present invention, and FIG. 6 is an explanatory diagram of the fourth embodiment of the present invention. of! Explanatory diagram of 8B5 embodiment, 7th
The figure is an explanatory diagram of the sixth embodiment of the present invention, and FIG. 8 is a bottom cutaway diagram of the seventh embodiment of the present invention. In the diagram, (1) is a support, (2) is a beam, (3) is a small beam, and (4)
is trunk crane, (5) is hanger, (7) is duct, (8) is air-water separation tank, 0 (]) is piping, Q old is scaffolding, < l3i (, is Bano I, 0υ is piping , (A) indicates a valve, aη indicates a handrail, 08) indicates a unit, and Q indicates a block piping. 'I':l'lT'l"Applicant Ishikawajima-Harima Heavy Industries Co., Ltd., Figure 5, Figure 6

Claims (1)

[Claims] 1) In parallel with the erection of the boiler steel frame, ducts, piping, etc.
A boiler construction method characterized by constructing a boiler steel frame while incorporating components such as equipment into the steel frame.