JPS5924117A - Exchange method of brick for boiler - Google Patents

Abstract

PURPOSE:To eliminate the necessity of cutting heat transmitting tubes and shorten the term of works by a method wherein a casing board, having a proper width, is attached, the firebrick and insulating bricks are attached between the casing board and the heat transmitting tubes and the space between the casing board and the insulating bricks is filled with insulating cement. CONSTITUTION:The proper width of the upper part of the casing board 8, constituting the wall body 7 of the existing boiler, the insulating bricks 10 and the firebricks 9 are removed and a piece for preventing the dropping of ceiling bricks is attached at the same time. In the same manner, the proper width thereof are removed sequentially to remove the wall body 7 of the boiler. The casing board 8, having the proper width, is attached, the firebricks 9 and the insulating bricks 10 are laid between the casing board 8 and the heat transmitting tubes 3, and wooden pillars 12 are inserted between the casing board 8 and the insulating bricks 10 with a proper space to prevent the deviation of both bricks 9, 10. Next, the space between the casing board 8 and the insulating bricks 10 is filled with the insulating cement 11 and the proper width of them are laid in the same manner.

Description

[Detailed description of the invention] The present invention relates to a method for replacing boiler bricks.

The R abbreviation of the boiler will be explained based on FIG. (1) Vi water drum, (2) air drum, (3) l-1: both drums (1) (2) open heat transfer tube, (4) i
, i: burner insertion port, a refractory brick (9) provided, and a heat insulating brick (4) disposed along the refractory brick (9);
A heat insulating cement (
It is composed of 1υ.

In the above configuration, conventionally, when replacing the refractory brick (9) and the heat insulating brick QO, the upper and lower ends of the heat transfer tube (3) were cut and removed from the inside of the foiler, and then the refractory brick (
9) and insulating brick αI are removed, new insulating brick 0() and fireproof brick (9) are installed, and the upper and lower ends of the heat transfer tube (3) removed above are attached. This conventional construction method has problems in that it takes a lot of time and effort to attach the cut heat transfer tube (3), lengthens the construction period, and increases costs.

Therefore, the present invention provides a method for replacing boiler bricks that solves such problems, and its characteristics are as follows: The upper part of the casing plate that constitutes the wall of the existing boiler is removed by an appropriate width; Remove the insulating bricks and refractory bricks from the section, then remove the casing plate under it by an appropriate width, remove the insulating bricks and refractory bricks from the removed area, and in the same way remove the casing plates by appropriate width in order and remove the insulation. Remove the bricks and refractory bricks to eliminate the boiler wall. Next, attach a casing plate of an appropriate width to the lower part of the area where the wall is to be constructed, and then attach a refractory brick and an insulating brick between the casing plate and the heat transfer tube (0). Insulating cement is filled between the gaps, and then all casing plates of an appropriate width are installed on the lower casing plate, and a refractory brick and an insulating cent are installed between the casing plate and the heat transfer tube, and the insulating brick and the casing plate are Insulating cement is filled between the casing plates and insulating bricks, and in the same manner, casing plates of appropriate width are stacked and installed in order, and fire bricks and insulating bricks are installed. According to this method, since the heat transfer tube is not cut, the installation of cut heat transfer tubes, which was conventionally very time consuming and caused a long construction period, is no longer necessary. It does not take much time, and the construction period can be shortened.
This makes it possible to reduce costs.

An embodiment of the present invention will be described below with reference to FIG.

First, a scaffold is constructed around the casing plate (8). Next, the casing plate (8) that constitutes the wall (7) of the existing wheeler
Remove the upper part of the ceiling by an appropriate width (for example, 1 m), remove the heat insulating brick 'θ0 and kl large brick (9) from the removed part, and at the same time install a piece to prevent the ceiling brick from falling off. Next, remove the casing plate (8) below it to an appropriate width, remove the Wr heat sink "00" and the refractory brick (9) from the removed part, and in the same way, remove the casing plate (8) in order for each appropriate width. At the same time, all insulation bricks 00 and fireproof bricks (9) are removed, and the boiler wall (7
) Eliminate wo.

Next, place the wall (7) at the bottom of the area where it should be constructed (see Figure 2).
Attach it to a casing plate (8) of an appropriate width as shown in a), and place a fireproof wire (9) between the casing plate (8) and the heat transfer tube (3) as shown in Fig. 2(b). Attach the insulation bricks 00 and insert the wooden pillars O'4 at appropriate intervals between the casing plate (8) and the insulation bricks αO, and make sure that both bricks (9J (10) do not shift.Next, Fill insulation cement (1υ) as shown in Figure 2 (cl) between the casing plate (8) and the insulating brick 0 (), and then fill it with insulation cement (1υ) as shown in Figure 2 (cl) on the lower casing plate (8). As shown by the imaginary line, the casing plate with the appropriate tooth width (8
) is installed, and a refractory brick (9) and a broken brick (0) are installed between the casing plate (8) and the heat transfer tube (3).
Attach 0 and heat oven aO and casing plate (8
) with wooden pillars (6) inserted between them, insulation cement) (1
1), and in the same way, install a casing plate of appropriate width (8
) in order and install the fire bricks (9).
Attach the heat insulating lens 00 and the casing plate (8
) and an insulating cement θ (1υ) are filled between them to form the boiler wall (?).

As described above, according to the boiler brick replacement method of the present invention, the heat transfer tubes are not cut. This eliminates the need for injuries, saves labor, shortens the construction period, and reduces costs.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the boiler, and FIG. 2 (at to fcl are explanatory diagrams of the construction procedure of the boiler wall showing one embodiment of the present invention. (3)...Heat transfer tube, (7) ...boiler wall,
(8)...Casing plate, (9)...Firebrick,
QO...insulating brick, αυ...insulating cement, α gong...wooden pillar

Claims (1)

[Claims] 1. Remove the upper part of the casing plate that makes up the wall of the existing boiler by an appropriate width, remove the insulation bricks and refractory bricks from the removed part, then remove the casing plate below by an appropriate width and remove the insulation from the removed part. The bricks and refractory bricks are removed, and in the same way, the casing plates are sequentially removed at appropriate widths, and the insulation bricks and refractory bricks are removed to eliminate the boiler wall. Next, install a casing plate of an appropriate width at the bottom of the area where the wall is to be constructed, install firebricks and insulating bricks between the casing plate and the heat transfer tube, and then install between the casing plate and the insulating bricks. is filled with insulating cement, and then a casing plate of an appropriate width is installed on the lower casing plate, and a refractory brick and an insulating brick are installed between the casing plate and the heat transfer tube, and the connection between the insulating brick and the casing plate is Insulating cement was filled in between, and in the same way, the casing plates of J width were lifted up in order and removed, and the refractory bricks and W1 heat bricks were attached, and insulating cement was placed between the casing plates and the insulating bricks. A method for replacing a mower characterized by filling it to form a whiff wall.