KR100356573B1 - Construction method of electrostatic particle precipitator - Google Patents

Abstract

Provided is a method for assembling a moving electrode type electrostatic precipitator which can efficiently mount a discharge frame or a moving electrode in a casing.

In the step before the hopper below the casing 12 is mounted, a plurality of discharge frames 14 are opened at the opening 39 of the hopper by a door-shaped moving crane 41 disposed above the casing 12. After mounting, the moving electrode 15 is mounted every other of these discharge frames, and finally, the hopper 13 is mounted.

Description

Assembly method of mobile electrode type electrostatic precipitator {CONSTRUCTION METHOD OF ELECTROSTATIC PARTICLE PRECIPITATOR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a mobile electrode folding dust collector, and in particular, by a plurality of discharge frames suspended at predetermined intervals in a casing, and a plurality of dust collector plates arranged on a pair of endless chains. The present invention relates to a method for assembling a mobile electrode type electrostatic precipitator having a plurality of moving electrodes which forms a loop and rotates the discharge frame every other.

This type of mobile electrode type electrostatic precipitator is known as an electrostatic precipitator for removing dust in, for example, boiler exhaust gas of a thermal power plant and exhaust gas of various furnaces for steelmaking. The schematic structure will be described with reference to FIGS. 4 to 8.

4, the moving electrode type electrostatic precipitator 10 includes a casing 12, a hopper 13 below the casing 12, a plurality of discharge frames 14 disposed in the casing 12, and Comprising a plurality of moving electrodes 15, the exhaust gas 17 introduced into the casing 12 from the inlet flue 16 is dusted by the electrostatic precipitating principle to the outlet flue 18 Ejected from

The collected dust falls into the hopper 13 and is taken out of the discharge port 19 by a mechanism not shown.

FIG. 5 is a view seen from A-A of FIG. 4, and a plurality of discharge frames 14 are suspended in the casing 12 at predetermined intervals.

In addition, a plurality of moving electrodes 15 are arranged around the discharge frame 14 every other time.

6 is a side view showing the mounting structure of the discharge frame 14, Figure 7 is a view seen from B-B of FIG.

The discharge frame 14 is formed by arranging a plurality of discharge lines 21 in a lattice-shaped frame body 20, and is connected to the frame 22 through a hanger rod 23 to form a frame 24. The upper beams 25 and the lower beams 26) are suspended by fixing the upper brackets 27 and the lower brackets 28 protruding from the respective discharge frames 14.

Reference numerals 29 and 30 denote drive wheels and lower rollers of the moving electrode 15.

FIG. 8 is a perspective view showing the detailed structure of the moving electrode 15. A pair of endless chains 31 are interposed between the upper driving wheel 29 and the lower roller 30, and the pair A plurality of dust collecting plates 32 are hanged and fixed at the position of the intermediate portion 33 in the width direction thereof, and are formed in a loop as a whole.

The shaft 34 of the drive wheel 29 is rotated by a drive mechanism (not shown), and the rotation of the shaft 34 is transmitted to a pair of groupless 31 engaged with the drive wheel 29, A plurality of dust collecting plates 32 forming the loops move around the discharge frame 14 every other time.

However, since the moving electrode type electrostatic precipitator 10 generally has a total height of 20 to 30 m, it is difficult to manufacture the whole structure integrally in a factory.

Therefore, in the assembling, the casing 12 is first constructed at a local installation site, and then the discharge frame 14 and the moving electrode 15 are mounted in the casing 12.

However, the mounting intervals of the plurality of discharge frames 14 are usually 300 to 400 mm, and the moving electrodes 15 are again in the middle of the narrow intervals of the discharge frames 14 that are woven into the space in the casing 12. Installation of these discharge frames 14 and the movable electrodes 15 in the casing 12, which has a small working space and is difficult to take the working platform, requires the installation of the mandatory member 31 and the dust collecting plate 32. The efficiency was bad.

Therefore, there is a problem that the number of processes required for the mounting work increases, leading to an increase in construction cost and a long construction period.

1 is a partially cutaway cross-sectional view showing an embodiment of the present invention.

Fig. 2 is a perspective view showing a state for hanging an end of a moving electrode according to the embodiment.

3 is a partial cross-sectional view showing another embodiment of the present invention.

Figure 4 is a side cross-sectional view showing a general configuration of a mobile electrode electrostatic precipitator.

5 is a view seen from A-A of FIG.

Figure 6 is a side view showing the mounting structure of the discharge frame.

FIG. 7 is a view seen from B-B of FIG. 6;

8 is a perspective view showing a detailed structure of a moving electrode.

(Explanation of symbols for the main parts of the drawing)

12: casing, 13: hopper,

14: discharge frame, 15: moving electrode,

29: drive wheel, 31: endless chain,

32: dust collecting plate, 39: hopper opening,

40: rail, 41: door type moving crane,

44: wire

SUMMARY OF THE INVENTION An object of the present invention is to assemble a mobile electrode type electrostatic precipitator capable of efficiently mounting the discharge frame 14 or the moving electrode 15 in the casing 12 by improving the problems of the prior art. To provide a method.

In the method of assembling the mobile electrode type electrostatic precipitator according to the present invention, a loop is formed entirely by a plurality of discharge frames suspended at predetermined intervals in a casing, and a plurality of dust collector plates arranged in a pair of ungrouped members. And assembling a moving electrode type electrostatic precipitator having a plurality of moving electrodes circulating the discharge frame every other one, wherein the moving electrodes are mounted after mounting the plurality of discharge frames at a predetermined position in the casing. It is characterized by the sun going.

Further, the present invention is characterized in that the mounting of the discharge frame and the moving electrode is carried in through the hopper opening in the state where the hopper is not attached to the lower portion of the casing, and then the hopper is mounted.

Further, the present invention is characterized by arranging a rail above the casing, and carrying-in operation of the discharge frame and the moving electrode into the casing by a door-shaped moving crane capable of traveling on the rail.

In addition, the present invention is produced in a separate place in the state that the one place of the loop is separated in advance, the moving electrode is brought into a predetermined position below the casing, and then the loop of the separated moving electrode Both ends are simultaneously or separately pulled up from the opening of the hopper to the ceiling position in the casing, and then both ends of the loop of the moving electrode are connected at this ceiling position.

In addition, the present invention is produced in a separate place in a state in which the moving electrode forming the loop is divided into two so as to have substantially the same length beforehand, and the two divided moving electrode is brought into a predetermined position under the casing, and then the The upper end of each of the two divided moving electrodes is pulled up from the opening of the hopper to the ceiling position in the casing, and then the upper part of the two divided moving electrodes is connected at this ceiling position, and the two divided at the lower position in the casing. A lower end portion of one moving electrode is connected.

(Example)

1 is a view showing an embodiment of the present invention. In this embodiment, a moving electrode electrostatic precipitator is assembled according to the following procedure.

First, the casing 12 is constructed. In this step, the hopper 13 is not attached to the lower part of the casing 12, and the lower part of the casing 12 is opened (the hopper opening 39 is provided).

Next, as shown in FIG. 6, FIG. 7, a pipe pipe 22 is attached to the casing 12, and the hanger rod 23 is lowered from the pipe pipe 22. As shown in FIG.

Next, the lower end of the hanger rod 23 and the upper beam 25 of the frame 24 are connected to hang the entire frame 24.

Next, the discharge frame 14 produced in another place is carried in to the desired position of the hopper opening 39 below the casing 12.

Next, the discharge frame 14 is suspended in the casing 12 by using a crane such as a crane or a hoist placed above the casing 12, and the upper bracket 27 and the lower part mounted on the discharge frame 14 are mounted. The mounting of one discharge frame 14 is completed by connecting the brackets 28 to the upper beam 25 and the lower beam 26 of the frame 24, respectively.

Next, all of the plurality of discharge frames 14 are suspended in the frame 24 in the same order.

In the above mounting of the discharge frame 14, since there are no special obstacles on the upper and lower portions of the casing 12, it is possible to smoothly hang the discharge frame 14 to the casing 12 and to operate the crane so that the work efficiency is improved. Good.

Next, the drive wheel 29 and the lower roller 30 of the moving electrode 15 are mounted at predetermined positions in the casing 12.

When the drive wheel 29 and the lower roller 30 are mounted before the discharge frame 14 is mounted, these become obstacles and the mounting work efficiency of the discharge frame 14 is significantly reduced.

Next, the process shifts to the mounting work of the moving electrode 15.

First, the plurality of dust collector plates 32 are connected to a chain in which one of the pairless group members 31 is separated, and one loop of the dust collector plates 32 is connected. The moving electrode 15 in the separated state is manufactured in a separate place, and the moving electrode 15 is brought into a desired position of the hopper opening 39 under the casing 12.

Subsequently, as shown in FIG. 1, the operation is suspended in the casing 12 of the moving electrode 15 by a door-shaped moving crane 41 capable of traveling on the rail 40 disposed above the casing 12. Do it.

FIG. 1 shows the steps during the mounting of the first moving electrode 15A and the hanging of the second moving electrode 15B.

One end 42 in which the loop of the moving electrode 15B is separated is already pulled up to the position of the upper driving wheel 29B in the casing 12 by the door-shaped moving crane 41, and the one end 42 ) Is temporarily fixed in this position in an appropriate manner.

Subsequently, in the state shown in FIG. 1 in which the other end 43 of which the loop of the moving electrode 15B is separated is fixed by hooking the wire 44, the door-shaped moving crane 41 is similar to the one end 42. The casing 12 is pulled up to the position of the upper driving wheel 29B.

In addition, when the other end 43 is fixed to the wire 44, the auxiliary wire 46, using the moon balance 45 having the same length as the mounting interval of the chain 31, as shown in FIG. It is preferable to suspend the end of the chain 31 by 47.

After the other end 43 is pulled up, the other end 43 and the one end 42 which is already lifted up and temporarily fixed are connected by a suitable method.

The connection of the movable electrode 15B is completed by matching the drive wheel 29 and the lower roller 30 with the unit 31 which is literally endless by this connection.

Next, the plurality of moving electrodes 15 are sequentially mounted in the same order.

After the mounting of all of the plurality of moving electrodes 15 is completed, the hopper 13 is attached to the lower portion of the casing 12, thereby completing the assembly of the main constituent members in the moving electrode electrostatic precipitator.

As described above, according to the present embodiment, after mounting a plurality of discharge frames at a predetermined position in the casing, the moving electrodes are mounted in every other of these discharge frames, thereby smoothly mounting the discharge frames and the moving electrodes. It can be performed efficiently.

In addition, the discharge frame and the moving electrode were mounted in the hopper opening part before the hopper at the bottom of the casing was mounted, and then the hopper was mounted. Therefore, the discharge frame and the moving electrode were brought into the casing. Compared to hanging from the ceiling opening of the ceiling, it can be efficiently performed without using a crane or the like that can be lifted up high.

In addition, since the rail is disposed above the casing and the carrying-in operation of the discharge frame and the moving electrode into the casing is performed by a door-type moving crane which can run on the rail, positioning is facilitated, and in particular, the gap is narrow. It is suitable for the case where the moving electrode is pulled up between the discharge frames.

In addition, the moving electrodes are prepared in a separate place with one of the loops separated in advance, and the moving electrodes are brought into a predetermined position under the casing, and then both ends of the loops of the separated moving electrodes are respectively opened in the hopper. In this case, the end of the casing is pulled up to the ceiling position in the casing, and then both ends of the loop of the moving electrode are connected at this ceiling position, so that the assembly and mounting of the moving electrode can be performed quickly.

3 shows another embodiment of the present invention.

In the embodiment shown in Fig. 3A, the moving electrode 15 is manufactured in a separate place with one part of the loop separated in advance, and the moving electrode 15 is carried in a predetermined position under the casing 12. Up to now is the same as the above embodiment.

In this embodiment, one end 42 and the other end 43 of the loop of the separated moving electrode 15 are simultaneously pulled from the opening 39 of the hopper to the ceiling position in the casing 12 by the pair of wires 44. Up. Therefore, the efficiency of the lifting operation of the moving electrode 15 is further improved.

In the embodiment shown in Fig. 3B, the movable electrodes 15 forming the loops are manufactured in separate locations in two divided states so as to have the same length in advance, and the two divided movable electrodes 15 are formed in the casing. (12) Bring into the predetermined position below, and then each of the two divided moving electrodes 15 is pulled up from the opening 39 of the hopper to the ceiling position in the casing 12, and then at the ceiling position 2 The upper end portion 48 of the divided moving electrode 15 is connected, and the lower end portion 49 of the two-split moving electrode 15 is connected at a lower position in the casing 12.

In this embodiment, since the moving electrode 15 is conveyed and pulled up in two divided states so as to have the same length in advance, for example, the lifting capacity of the door-shaped moving crane 41 can be halved. Preparation and work can be reduced in size and simplified.

In the above embodiment, the case in which the sentence moving crane 41 is arranged above the casing 12 and the discharge movement of the discharge frame or the moving electrode into the casing by the sentence moving crane 41 has been described. Instead of the moving crane 41, another crane such as a jib crane disposed above the ground or the casing 12 may be used.

According to the present invention, a plurality of discharge frames hanging at predetermined intervals in a casing and a plurality of dust collector plates arranged in a pair of unintegrated groups form a loop as a whole and rotate the discharge frames every other. In assembling a mobile electrode type electrostatic precipitator having a plurality of moving electrodes, it is possible to efficiently mount these discharge frames and moving electrodes in the casing.

Claims (5)

The casing 12 forms a loop as a whole by a plurality of discharge frames 14 hanging at predetermined intervals and a plurality of dust collector plates 32 arranged on a pair of endless chains 31. In assembling a mobile electrode type electrostatic precipitator having a plurality of moving electrodes 15 which rotates the discharge frame 14 every other time, And mounting the movable electrodes (15) after mounting the plurality of discharge frames (14) at predetermined positions in the casing (12). The method of claim 1, wherein the mounting of the discharge frame 14 and the moving electrode 15 is carried in through the hopper opening 39 in a state where the lower hopper 13 of the casing 12 is not mounted, And then mounting a hopper (13). 3. The rail according to claim 2, wherein a rail (40) is disposed above the casing (12), and a carry-in operation of the discharge frame (14) and the moving electrode (15) into the casing (12) runs on the rail (40). A method of assembling a mobile electrode type electrostatic precipitator, characterized in that it is carried out by such a door-type moving crane (41). The method according to claim 2, wherein the moving electrode 15 is manufactured in a separate place with one part of the loop separated in advance, and the moving electrode 15 is carried in a predetermined position under the casing 12, Subsequently, both ends of the loop of the separated moving electrode 15 are simultaneously or separately pulled from the hopper opening 39 to the ceiling position in the casing 12, and then the loop of the moving electrode 15 is moved from this ceiling position. Assembly method of a mobile electrode electrostatic precipitator, characterized in that connecting both ends of the. 3. The casing 12 according to claim 2, wherein the movable electrodes 15 forming the loops are manufactured in separate locations in two divided states so as to have substantially the same length in advance. The upper end of each of the two divided mobile electrodes 15 is then pulled up from the hopper opening 39 to the ceiling position in the casing 12, and then divided into two at this ceiling position. A method of assembling a moving electrode electrostatic precipitator, characterized in that the upper end of the moving electrode (15) is connected, and the lower end of the two divided moving electrodes (15) is connected at a lower position in the casing (12).