JPS63156555A - Electrostatic precipitator - Google Patents

Abstract

PURPOSE:To prevent the cracking of a side wall and a floor plate, by separately paneling the inner walls of an electrostatic precipitator (EP) chamber, and leaving sufficient clearance against the expanded part due to heat in the title ferroconcrete EP. CONSTITUTION:The inner wall of the EP chamber is formed with the separately paneled precast concrete plates (PC plate 1), and a sufficient clearance 9 is provided to each PC plate 1 against the thermally expanded part. The inside of a dust collecting chamber 8 is heated to about 180 deg.C by the operation of the EP, hence the PC plate 1 is thermally expanded. However, the expansion can be reasonably absorbed by a packing 4 and the clearance 9. Consequently, the cracking of the side wall and the floor plate due to thermal expansion is prevented, and the service life of the dust collecting chamber can be prolonged.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electrostatic precipitator (hereinafter abbreviated as EP) made of reinforced concrete for removing fine particles of ash from combustion gas.
Regarding.

[Conventional technology]

In general, there are two types of EP, steel structure and reinforced concrete structure. FIG. As is clear from this figure 3 (B), the conventional EP
except for the upper lid of the ceiling.

Both the side walls and floor slabs are integrally cast with the frame beams or columns. Also, the side walls have a double structure, but the outer A
The LC version is provided for the purpose of heat retention. Furthermore, the third
In figures (A) and (B), 01 is the EP inner wall, 02 is the column, 03 is the foundation, 04 is the ALC plate, 05 is the backing,
064 Yamao Steel, 07 is the dust collection room.

[Problem that the invention seeks to solve]

The temperature inside the BP room reaches approximately 180 degrees during operation.

If the EP room is made of reinforced concrete, Figure 3 (5)
In the conventional structure shown in (B), the expansion of the side walls and floor slab due to this heat is suppressed by the pillars 02 and beams around the four peripheries, resulting in large stress on the frame and a large number of bolts on the side walls and floor slab. This results in cracking.

For this reason, an EP room made of reinforced concrete is replaced by an EP room made of steel.
Although it is more cost-effective than conventional EP chambers, steel EP chambers are generally not adopted in many cases.

An object of the present invention is to provide an EP that can solve the above-mentioned conventional problems, prevent the occurrence of six cracks on the side walls and floor slabs of the EP room, and extend the service life of the EP room.

[Means for solving problems]

The EP according to the present invention is an EP made of reinforced concrete, in which the interior walls of the BP are made up of individually panelized precast concrete plates (PC plates), and each of these PC plates has a clearance for the thermal expansion part. It is characterized by being attached to the EP room frame. That is, in the present invention, in order to eliminate the above-mentioned problems caused by integrally forming the side walls and floor slab with the frame, these are made into individual panels (PC plates are used) to provide sufficient clearance for the parts that expand due to heat. This is an embedded metal fitting with sufficient strength and acid resistance for use in EP ventricles.

It is designed to be installed.

[Function] According to the present invention, the elongation due to thermal expansion of the side walls and floor slab of the EP room can be easily handled, and the occurrence of 6-fissures due to these thermal expansions, which was unavoidable in the case of the conventional example, can be prevented. I can do it.

〔Example〕

FIG. 1(B) is a sectional view showing the configuration of an embodiment of the present invention, and FIG. 1(B) is a partially enlarged sectional view of the side wall shown in FIG. 1(5). In Fig. 1, β), 1 is the PC version, 2 is the embedded hardware, 3 is bandit steel, 4 is the backing, 5 is the pillar, 6 is the foundation, 7 is the ALC version, 8 is the dust collection room, 9 is It's clearance.

Figure 2 (B) is a partially enlarged cross-sectional view showing the planar configuration of the vertical wall in Figures 1 (A) and (H).
B) is a partially enlarged sectional view of the side wall shown in FIG.
Illustration fee.

The same parts as those shown in (B) will be described with the same reference numerals. Note that 4' is a backing provided between the 20 plates 1.

In the conventional example, the side wall and floor slab part, which were integrally cast with the beam part or column part, are made into 20 plates 1 as shown in Figure 1 and (B), and these 20 plates 1 are installed by embedded metal fittings 2. Install it on the beam. At this time, the elongation due to thermal expansion of the 20th plate 1 is calculated in advance, and a sufficient tolerance 9 is taken.

In addition, a backing 4 that has sufficient elasticity even under high heat and high acidity is used to connect the embedded metal fitting 2 and the 20 plate 1.

In this case, the elevational configuration is such that a row of 20 plates 1 are inserted between each small beam, as shown in Figure 1 (5) and (B), but the planar configuration is as shown in Figure 2 (5). , (B), the columns are divided into appropriate lengths to connect the panels. In this case as well, a clearance 9 is provided for the embedded metal fitting 2 to be attached to the column side for thermal expansion. The above-mentioned pub kings 4 and 4' are used for the joints between the embedded hardware 2 and the 20th plate 1 and the joints between the PC plates 1, respectively.

The operation of the above embodiment of the present invention will be explained.

Figure 1! A)? In (B), the inside of the dust collection chamber 8 is heated to a high temperature of about 180 degrees due to the operation of the EP. This high temperature heats the 20 plates 1 of the side walls and floor slabs that form the inner wall 'rM in the dust collection chamber 8, and the 20 plates 1 expand due to thermal expansion, but these expansions cause the backings 4 and 4' and the clearance 9 Processed easily via . This is υ
The occurrence of six cracks due to thermal expansion of the side walls and floor slabs is prevented.

〔Effect of the invention〕

As mentioned above, the present invention can prevent the occurrence of cracks due to thermal expansion of the side walls and floor slabs, which was unavoidable in conventional reinforced concrete cracks and dust chambers. It has excellent effects such as extending the service life.

[Brief explanation of the drawing]

Figures 1 (5) and (13) are sectional views of an embodiment of the present invention, (- and a partially enlarged sectional view (B), which corresponds to Figure 2. ), fB) are enlarged cross-sectional views of the PC version, and Figures 43 (5) and (B) are cross-sectional views of the conventional dust collection. l...PC version, 4.4'...Pub King, 8...
Fruit chamber, 9... Clearance.

Claims (1)

[Claims] In an electrostatic precipitator made of reinforced concrete, the interior walls of the electrostatic precipitator are made up of individually panelized precast concrete plates, and each of these precast concrete plates is designed with a clearance for the thermal expansion part. An electrostatic precipitator characterized by being attached to the body of an organ.