JP2016067990A - Electric dust collector reinforcement structure and electric dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric dust collector reinforcement structure capable of comparatively easily performing reinforcement and securing a necessary bearing force and to provide an electric dust collector.SOLUTION: An electric dust collector reinforcement structure includes: a column material 8 and a beam material 9 bearing a load to an electric dust collector; and a reinforcement material 11 for a column and a reinforcement material 12 for the beam disposed at the column material 8 and the beam material 9 caused with defective parts and connected to the column material 8 and the beam material 9 at positions out of the defective parts. The reinforcement material 11 for the column and the reinforcement material 12 for the beam have strength capable of enduring stress and deformation caused by the load to the electric dust collector by the column material 8, the beam material 9, the reinforcement material 11 for the column and the reinforcement material 12 for the beam even when the transmission of a force does not occur in the vicinity of the defective parts of the column material 8 and the beam material 9.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electrostatic precipitator reinforcement structure for reinforcing a structure of an electrostatic precipitator and an electrostatic precipitator.

  An electrostatic precipitator (EP) removes dust particles (also called dust, particulate matter, etc.) contained in exhaust gas or air before they are released from a chimney to the atmosphere. The electric dust collector includes a discharge electrode that charges particles, a dust collection electrode that is disposed to face the discharge electrode, and the like. When corona discharge is generated at the discharge electrode, gas molecules are ionized, and particles contained in the exhaust gas and the like are charged when passing through the electric field between the electrodes. The charged particles are collected by the dust collecting electrode.

  An electrostatic precipitator with a relatively large amount of processing gas installed in a plant or the like has a steel structure obtained by combining H-shaped steels by welding or the like. Patent Document 1 describes an invention relating to a construction method of an electrostatic precipitator roof, in which a building including the roof of the electrostatic precipitator is formed with a steel frame.

JP 10-8754 A (paragraphs [0002], [0003])

  The H-section steel, which is the structure of the electric dust collector, is exposed so as to be in direct contact with the gas in the main body through which the gas flows. And when the H-section steel provided in the position which contacts outside air on the outer surface side is exposed to relatively low temperature air, dew condensation occurs on the inner surface side, so that acid dew point corrosion occurs. Therefore, with the long-time operation of the electrostatic precipitator, there is a problem that the H-shaped steel is deteriorated by corrosion and eventually disappears. FIG. 9 shows an H-section steel column member 8 provided in the wall material 10, and FIG. 10 shows an H-section steel beam member 9. Due to the corrosion degradation of the H-shaped steel, a defect L is generated as shown in FIGS.

  Conventionally, as shown in FIG. 9, the steel plate 20 is joined to the deteriorated portion of the H-section steel to repair the H-section steel against the corrosion deterioration of the H-section steel. A two-dot chain line in FIG. 9 indicates the H-section steel remaining when the steel plate 20 is joined. However, the joining of the steel plate 20 is a repair to the H-shaped steel to the last, and when the deterioration of the H-shaped steel proceeds, the defect portion L spreads and the joined steel plate 20 is peeled off. Moreover, even if the steel plate 20 is joined, the joining considering the structural strength of the entire electrostatic precipitator is not necessarily performed, and the structural strength as the structure of the electrostatic precipitator cannot be secured. Absent.

  Also, when trying to newly install structures such as columns and beams of the electrostatic precipitator, it is necessary to remove the dust collection electrode and discharge electrode housed inside, and the construction period becomes longer, There is a problem that the cost increases.

  The present invention has been made in view of such circumstances, and it is possible to reinforce relatively easily and to provide an electrostatic precipitator reinforcement structure and an electric current collector that can ensure necessary proof strength. An object is to provide a dust device.

In order to solve the above problems, the electrostatic precipitator reinforcement structure and the electrostatic precipitator of the present invention employ the following means.
That is, the electrostatic precipitator reinforcing structure according to the present invention is provided in the structural material that bears the force applied to the electrostatic precipitator and the structural member in which the defect portion is generated, and the structure is located at a position away from the defect portion. The reinforcing material is applied to the electric dust collector by the structural material and the reinforcing material even when no force is transmitted in the vicinity of the defect portion of the structural material. It has the strength to withstand the stress and deformation caused by the load.

  According to this configuration, even when a defect portion occurs in the structural material and force transmission does not occur in the vicinity of the defective portion of the structural material, the reinforcing material is connected to the structural material at a place outside the vicinity of the defective portion, and Since the strength of the reinforcing material has a value that can withstand the stress and deformation caused by the load applied to the electrostatic precipitator by the structural material and the reinforcing material other than the vicinity of the defect, the electrostatic precipitator normally secures the necessary proof stress doing.

  In the above invention, the reinforcing material includes a first member provided in parallel to the axial direction of the structural material around the defect portion, and a second member connected to the structural material and the first member. You may have.

  According to this configuration, the second member is connected to the structural material, the first member is connected to the second member, and the first member is provided in parallel to the axial direction of the structural material around the defect portion. Therefore, the force applied to the structural material is transmitted through the first member and the second member even when no force is transmitted in the vicinity of the defect portion of the structural material.

  In the above invention, the structural material is a beam material and a column material, and the reinforcement material is a beam reinforcement material provided in parallel to the axial direction of the beam material, and the axial direction of the column material. Column reinforcing material provided in parallel, at least one of the beam reinforcing material and the column reinforcing material is connected to the structural material, the beam reinforcing material and the column reinforcing material, You may mutually connect in the junction part vicinity of the said beam material and the said column material.

  According to this configuration, at least one of the beam reinforcing member and the column reinforcing member is connected to the structural material, and the beam reinforcing member and the column reinforcing member are connected to each other while the beam reinforcing member and the column reinforcing member are connected to each other. Since the reinforcing material is provided in parallel to the axial direction of the structural material, the force applied to the structural material can be applied to the beam reinforcing material and the column reinforcing material even when no force is transmitted near the defect portion of the structural material. Is transmitted through.

  In the above invention, the reinforcing material may have a quadrangular cross-sectional shape and be installed so as to surround the structure material.

  According to this configuration, the cross-sectional shape of the reinforcing material is a quadrangle, and the reinforcing material is disposed so as to surround the structural material, i.e., the defect portion. Force is transmitted and no eccentricity of force occurs.

  In the above invention, the reinforcing material may be provided in parallel to the axial direction of the structural material including the defective portion and connected to the structural material in which the defective portion is generated.

  According to this configuration, since the reinforcing material is provided in parallel to the axial direction of the structural material including the defect portion while the reinforcing material is connected to the structural material, the force applied to the structural material is reduced. Even when no force is transmitted in the vicinity of the portion, the force is transmitted through the reinforcing material.

  In the above invention, the structural material is a pillar or beam material made of H-shaped steel, the reinforcing material is made of H-shaped steel, and the flange of the reinforcing material is connected to face the flange of the structural material. May be.

  According to this configuration, the flange of the H-shaped steel of the structural material that is a column material or a beam is connected to face the flange of the H-shaped steel of the reinforcing material, and the force applied to the H-shaped steel of the structural material is If no force is transmitted in the vicinity of the missing part of the material, the force is transmitted through the H-shaped steel of the reinforcing material.

  In the above invention, it is desirable that the cross-sectional shape of the reinforcing member has a shape that does not interfere with an existing electrode provided inside the electrostatic precipitator.

  According to this configuration, since the reinforcing material does not interfere with the existing electrode provided inside the electrostatic precipitator, it is not necessary to remove the existing electrode, and no major repair is necessary.

  In the above invention, it is desirable that the reinforcing material is provided without a gap from the wall material of the electrostatic precipitator.

  According to this configuration, since no gap is provided between the reinforcing material and the wall material of the electrostatic precipitator, gas leakage or air leakage from the inside of the electrostatic precipitator can be prevented.

  The electrostatic precipitator according to the present invention includes the above electrostatic precipitator reinforcement structure.

  According to the present invention, it is possible to reinforce the structure of the electrostatic precipitator relatively easily and to ensure the proof stress necessary for the electrostatic precipitator.

It is a perspective view which shows the electric dust collector which concerns on 1st Embodiment of this invention. It is a perspective view showing the electric dust collector reinforcement structure concerning a 1st embodiment of the present invention. It is a front view showing the electric dust collector reinforcement structure concerning a 1st embodiment of the present invention. It is a cross-sectional view which shows the electrostatic precipitator reinforcement structure which concerns on 1st Embodiment of this invention. It is a cross-sectional view which shows the electrostatic precipitator reinforcement structure which concerns on 1st Embodiment of this invention. It is a longitudinal cross-sectional view which shows the reinforcing material for beams of the electrostatic precipitator reinforcement structure which concerns on 1st Embodiment of this invention. It is a perspective view which shows the electrostatic dust collector reinforcement structure which concerns on 2nd Embodiment of this invention. It is a front view which shows the electric dust collector reinforcement structure which concerns on 2nd Embodiment of this invention. It is a cross-sectional view which shows the pillar material of the structure of an electrical dust collector. It is a perspective view which shows the beam material of the structure of an electrical dust collector.

[First Embodiment]
First, the electric dust collector 1 which concerns on 1st Embodiment of this invention is demonstrated.
The electrostatic precipitator 1 according to the present embodiment is installed in an exhaust gas treatment facility provided in a flue on the downstream side of an industrial combustion facility such as a coal-fired or heavy oil-fired power plant or an incinerator, for example. Moreover, the electrostatic precipitator 1 can be used not only for industrial combustion equipment, but also for air purification equipment filters (for example, clean room air conditioning filters, virus removal filters, etc.).
In order to remove particles such as dust and mist, the electrostatic precipitator 1 is attached to the discharge electrode 2 for charging the particles, the dust collection electrode 3 disposed opposite to the discharge electrode 2, and the dust collection electrode 3. A hammering device 4 or the like for dropping the particles on the lower hopper is provided inside (see FIG. 4).

  As shown in FIG. 1, the structure 5 of the electrostatic precipitator 1 is usually a steel structure, and can be roughly divided into an upper structure 6 that constitutes the main body and a lower structure 7 that supports the main body below. it can. The structural material of the upper structure 6 includes a column material 8, a beam material 9, a wall material 10, and the like. The structural material of the lower structure 7 includes a foundation 31 and a gantry 32.

  The column member 8 and the beam member 9 are, for example, long H-shaped steel, and the surface is usually not coated. The exhaust gas is circulating inside the main body, and the inner surfaces of the column member 8 and the beam member 9 are always in direct contact with the gas. When the columnar member 8 and the H-shaped steel of the beam member 9 that are in contact with the outside air on the outer surface side are exposed to air at a lower temperature than the inside, condensation occurs on the inner surface side and acid dew point corrosion occurs. In the electrostatic precipitator 1 that has been operated for many years, a defect L occurs in the H-shaped steel of the column member 8 and the beam member 9 (see FIGS. 9 and 10). The deficient portion L refers to a portion where the H-shaped steel web and the flange are thinned due to corrosion, or a portion where the H-shaped steel web and the flange disappear due to progress of corrosion deterioration.

  In the beam member 9 installed in the lower part of the electric dust collector 1, the defect L is likely to occur over the entire length direction between the column member 8 and the column member 8. In the column member 8, the defect L is particularly likely to occur below the column member 8, that is, near the connection portion with the beam member 9.

  When the defect portion L occurs, the column member 8 and the beam member 9 need to bear the force applied to the electrostatic precipitator 1 in the remaining portion where the defect portion L does not occur. The electric dust collector 1 may collapse.

Next, the reinforcing structure of the electrostatic precipitator 1 according to the first embodiment of the present invention will be described.
As shown in FIGS. 2 to 5, the reinforcing member includes a column reinforcing member 11 provided for the column member 8 and a beam reinforcing member 12 provided for the beam member 9.

  The column reinforcing material 11 and the beam reinforcing material 12 are, for example, metal materials such as steel materials. If corrosion resistant steel, stainless steel, or the like is used, the corrosion resistance and durability of the surface installed inside the electrostatic precipitator 1 are also used. Improves.

  The column reinforcing material 11 is installed so as to surround the column material 8. The column reinforcing member 11 has a box-shaped reinforcing portion 13 connected to the connecting portion 14 at both ends, and a connecting portion 14 connected to the column member 8, and the box-shaped reinforcing portion 13 and the connecting portion 14 are mutually connected. Connected by welding.

  The longitudinal direction of the box-shaped reinforcing portion 13 is provided in parallel to the axial direction of the column member 8. As shown in FIGS. 4 and 5, the cross-sectional shape of the box-shaped reinforcing portion 13 is, for example, a quadrangle, and is installed so as to surround the periphery of the column member 8. The box-shaped reinforcing portion 13 may be a combination of plate materials by welding, or may be a combination of L-shaped cross-section or U-shaped steel. The box-shaped reinforcing portion 13 is disposed so as to be separated from the pillar material 8. The separation between the box-shaped reinforcing portion 13 and the column member 8 facilitates the connection between the column reinforcing member 11 and the beam reinforcing member 12.

  Since the cross-sectional shape of the box-shaped reinforcing portion 13 is a quadrangle, and the box-shaped reinforcing portion 13 is arranged so as to surround the column member 8 and the missing portion L generated in the column member 8, as shown in FIG. The progress of corrosion of the defect L can be reduced. In addition, since the box-shaped reinforcing portions 13 are evenly arranged around the column member 8, force is reliably transmitted and no eccentricity of the force occurs.

  The connecting portion 14 is connected to the pillar 8 at a position deviating from the missing portion L on one end side, and connected to the box-shaped reinforcing portion 13 on the other end side. The position deviated from the defect part L is a position where no defect such as corrosion occurs within the durable years after the reinforcement work of the electrostatic precipitator 1 even when the defect part L is corroded. Further, at a position deviated from the defect portion L, force is reliably transmitted between the column member 8 and the connecting portion 14.

  The connecting portion 14 is formed by combining plate materials by welding. As for the connection part 14, a board | plate material is arrange | positioned in the diagonal direction with respect to the axial direction of the pillar material 8, for example.

  While the connecting portion 14 is connected to the column member 8 and the box-shaped reinforcing portion 13 is connected to the connecting portion 14, the box-shaped reinforcing portion 13 is provided around the defect portion L in parallel to the axial direction of the column member 8. Therefore, the force applied to the column member 8 is transmitted through the box-shaped reinforcing portion 13 and the connecting portion 14 of the column reinforcing member 11.

  A plate-like diaphragm 15 is provided along the connecting portion between the box-shaped reinforcing portion 13 and the connecting portion 14 at the connecting portion between the box-shaped reinforcing portion 13 and the connecting portion 14 in consideration of force transmission. The diaphragm 15 is also connected to the column member 8. Moreover, the plate-shaped rib 16 formed over both the box-shaped reinforcement part 13 and the connection part 14 may be provided.

  The beam reinforcing member 12 is provided in parallel to the axial direction of the beam member 9. As shown in FIGS. 2 and 6, the cross-sectional shape of the beam reinforcing member 12 is, for example, a quadrangle, and is installed so as to surround the beam member 9. The beam reinforcing member 12 may be a combination of flat plate members by welding, or may be a combination of L-shaped cross-sections or U-shaped sections. The beam reinforcing member 12 may be disposed in contact with the beam member 9 or may be spaced apart.

  Since the cross-sectional shape of the beam reinforcing member 12 is a quadrangle, and the beam reinforcing member 12 is disposed so as to surround the beam member 9 and the defect portion L generated in the beam member 9, corrosion of the defect portion L is prevented. Progress can be reduced. In addition, since the beam reinforcing members 12 are evenly arranged around the beam member 9, force is reliably transmitted and no eccentricity of the force occurs.

  The beam reinforcing member 12 is disposed between the two column reinforcing members 11 and is connected to the column reinforcing member 11 at the end of the beam reinforcing member 12 by welding. That is, the beam reinforcing member 12 is not directly joined to the beam member 9. In the present embodiment, the column reinforcing member 11 is connected to the column member 8 at a position away from the defective portion L on one end side of the connecting portion 14, so that the beam reinforcing member 12 is also the column reinforcing member. 11 is connected to the pillar 8 at a position deviated from the defective portion L.

In the example shown in FIGS. 2 to 5, the column reinforcing material 11 and the beam reinforcing material 12 are connected to each other in the vicinity of the joint portion between the column material 8 and the beam material 9.
The column reinforcing material 11 is connected to the structural column material 8, and the column reinforcing material 11 and the beam reinforcing material 12 are connected to each other. Therefore, the force applied to the column member 8 is transmitted via the column reinforcement member 11 and the beam reinforcement member 12.

  The column reinforcing material 11 or the beam reinforcing material 12 is provided for the column material 8 or the beam material 9 in which the defect L is generated. The column reinforcing member 11 or the beam reinforcing member 12 is a column reinforcing member 11, a beam reinforcing member 12, and the remaining column members when no force is transmitted in the vicinity of the defect L of the column member 8 or the beam member 9. 8 and the beam member 9 have a strength capable of withstanding the stress and deformation caused by the load applied to the electrostatic precipitator 1. That is, even when the missing portion L occurs in the column member 8 or the beam member 9 and no force is transmitted near the missing portion L of the column member 8 or the beam member 9, the column reinforcing member 11 and the beam reinforcing member 12 are The column reinforcing material 11 and the beam reinforcing material 12 are connected to the column material 8 at a place deviated from the vicinity of the defective portion L, and the strength of the column reinforcing material 11 and the beam reinforcing material 12 is other than the vicinity of the defective portion L. 12 and the remaining column member 8 and beam member 9 have a value that can withstand the stress and deformation caused by the load applied to the electrostatic precipitator 1, the electrostatic precipitator 1 usually has the necessary proof strength. .

  Therefore, the electrostatic precipitator 1 reinforced by the column reinforcing member 11 and the beam reinforcing member 12 is such that the column reinforcing member 11 and the beam reinforcing member 12 have the above-described strength, so that 1 can hold the structural strength equivalent to the structural strength at the time of new installation.

  The strength of the column reinforcing member 11 and the beam reinforcing member 12 is determined in consideration of the progress of corrosion occurring in the column member 8 and the beam member 9, the overall load, the seismic force, and the like.

  As shown in FIGS. 2 to 5, the diaphragm 17 and the opening reinforcing member 18 are provided at the joint portion between the column reinforcing member 11 and the beam reinforcing member 12 described above. As shown in FIG. 5, the column reinforcing member 11 is formed with an opening 19 through which the beam member 9 passes in the center at a connection portion with the beam reinforcing member 12.

  The diaphragm 17 is a plate-like member, and is provided along the outer periphery of the column reinforcing material 11. The diaphragm 17 is connected to each of the upper surface and the lower surface of the beam reinforcing member 12.

  The opening reinforcing member 18 is, for example, an L-shaped or U-shaped section steel, and is provided along the opening 19 formed in the column reinforcing member 11. One end side of the opening reinforcing member 18 is connected to the upper diaphragm 17, and the other end side is connected to the lower diaphragm 17. Thereby, the opening part 19 formed in the column reinforcing material 11 is reinforced, and damage to the opening part 19 can be prevented.

  The cross-sectional shapes of the column reinforcing member 11 and the beam reinforcing member 12 have shapes that do not interfere with the existing discharge electrode 2, dust collecting electrode 3, striking device 4, and the like provided inside the electric dust collector 1. It is desirable. As a result, it is not necessary to remove existing parts such as electrodes, and no major repairs are required.

  It is desirable that the outer peripheral surfaces of the column reinforcing member 11 and the beam reinforcing member 12 be installed without a gap from the end of the wall member 10. Thereby, the gas leak or the air leak from the inside of the electric dust collector 1 can be prevented.

  In addition, in the said embodiment, although the case where both the column reinforcing material 11 and the beam reinforcing material 12 were provided was demonstrated, this invention is not limited to this example. For example, only the column reinforcing material 11 may be provided without connecting the beam reinforcing material 12.

  Moreover, although the reinforcement material 12 for beams demonstrated the example connected to the two reinforcement materials 11 for columns at both ends, this invention is not limited to this example. For example, when the defective part L has arisen in a part of beam material 9, it does not surround the beam material 9 over the full length like the beam reinforcing material 12 of 1st Embodiment, but surrounds only a part of the beam material 9. Beam reinforcement may be installed in At this time, the beam reinforcing member includes a box-shaped reinforcing portion and a connecting portion, like the column reinforcing member 11 of the first embodiment. In this case, the beam reinforcing material may be connected to the column reinforcing material, or only the beam reinforcing material may be provided without being connected to the column reinforcing material.

  Furthermore, in the said embodiment, although the pillar reinforcement material 11 demonstrated the example connected with the pillar material 8 which is a structural material by the one end side, this invention is not limited to this example. One beam reinforcing member 12 is provided on each of the upper and lower portions, and the beam reinforcing member 12 is connected to two beam reinforcing members instead of being connected to the column member 8 which is a structural member as in the beam reinforcing member 12 of the first embodiment. You may install the reinforcing material for pillars so that.

[Second Embodiment]
Next, with reference to FIG.7 and FIG.8, the reinforcement structure of the electrostatic precipitator 1 which concerns on 2nd Embodiment of this invention is demonstrated. The electric dust collector 1 is the same as that of the first embodiment described above, and a detailed description thereof will be omitted.

  The reinforcing member has a column reinforcing member 21 provided for the column member 8 and a beam reinforcing member 22 provided for the beam member 9. In the following, the case where the column reinforcing member 21 and the beam reinforcing member 22 are provided on each of the column member 8 and the beam member 9 will be described. However, in the present invention, the column reinforcing member 21 and the beam reinforcing member 22 are provided. Only one of them may be provided.

  The column reinforcing material 21 and the beam reinforcing material 22 are, for example, H-shaped steel. The column reinforcing member 21 and the column member 8, and the beam reinforcing member 22 and the beam member 9 are coupled to each other by bolt bonding, as will be described later.

The column reinforcing member 21 is provided in parallel to the axial direction of the column member 8. The column reinforcing member 21 is disposed on the outer surface side of the electrostatic precipitator 1 along the column member 8 so as to straddle the defect L generated in the column member 8.
The beam reinforcing member 22 is provided in parallel to the axial direction of the beam member 9. The beam reinforcing member 22 is disposed on the outer surface side of the electrostatic precipitator 1 along the beam member 9 so as to straddle the defect L generated in the beam member 9.
7 and 8, the missing portion L is not illustrated, but as described with reference to FIGS. 5, 9, and 10, it is assumed that the defect L is generated in the column material 8 and the beam material 9.

  The column reinforcing member 21 or the beam reinforcing member 22 is connected to the column member 8 or the beam member 9 at a position away from the defect L on one end side and the other end side of the column reinforcing member 21 or the beam reinforcing member 22. Is done. The position deviated from the defect part L is a position where no defect such as corrosion occurs within the durable years after the reinforcement work of the electrostatic precipitator 1 even when the defect part L is corroded. Further, at a position away from the defect portion L, force is reliably transmitted between the column member 8 and the column reinforcing member 21 or between the beam member 9 and the beam reinforcing member 22.

  In the column reinforcing member 21 or the beam reinforcing member 22, the flat plate surface of the flange of the H-shaped steel faces the flat plate surface of the flange of the column member 8 or the beam member 9, and the flat plate surfaces of the flanges are in contact with each other. Connected. When reinforcing the flange of the column member 8 or the beam member 9, a large number of bolt holes are formed at short intervals, and a female screw is formed on the inner surface of the bolt hole by a tap. Bolt holes are also formed in the flanges of the column reinforcing member 21 or the beam reinforcing member 22 so as to correspond to the bolt holes of the flanges of the column member 8 or the beam member 9.

  By tightening the bolt from the column reinforcing member 21 or the beam reinforcing member 22 side, the column reinforcing member 21 or the beam reinforcing member 22 is sandwiched between the bolt head and the column member 8 or the beam member 9, The beam reinforcing member 22 and the beam member 9 or the column reinforcing member 21 and the column member 8 are integrated. Although construction is relatively difficult, a female screw is not formed on the inner surface of the bolt hole of the flange of the column member 8 or the beam member 9, and the bolt and nut are used for the column reinforcing member 21 and the column member 8, or the beam. The reinforcing member 22 and the beam member 9 may be sandwiched and integrated.

  Since the column reinforcing member 21 and the beam reinforcing member 22 are arranged on the outer surface side of the electrostatic precipitator 1, almost no work inside the electrostatic precipitator 1 occurs during installation, and the outside Installation is completed by the work. Therefore, the construction period can be shortened and the cost can be greatly suppressed.

  The column reinforcing member 21 or the beam reinforcing member 22 is provided for the column member 8 or the beam member 9 in which the defect L is generated. The column reinforcing member 21 or the beam reinforcing member 22 is formed of the column member 8 and the column reinforcing member 21 or the beam member 9 when no force is transmitted in the vicinity of the defect L of the column member 8 or the beam member 9. The beam reinforcing member 22 has a strength capable of withstanding the stress and deformation caused by the load applied to the electrostatic precipitator 1. That is, even when the missing portion L is generated in the column member 8 or the beam member 9 and no force is transmitted near the missing portion L of the column member 8 or the beam member 9, the column reinforcing member 21 or the beam reinforcing member 22 is provided. The column reinforcing member 21 or the beam reinforcing member 22 is connected to the column member 8 or the beam member 9 at a place deviated from the vicinity of the defect portion L, and the strength of the column reinforcing member 21 or the beam reinforcement member 22 is not limited to the vicinity of the defect portion L. The electric dust collector 1 has a value that can withstand the stress and deformation caused by the load applied to the electrostatic precipitator 1 by the reinforcing member 21 or the beam member 9 and the reinforcing member 22 for the beam. Secured.

  Therefore, the electrostatic precipitator 1 reinforced by the column reinforcing member 21 and the beam reinforcing member 22 has the strength as described above, so that the electric dust collecting device 1 has the above-described strength. 1 can hold the structural strength equivalent to the structural strength at the time of new installation.

  According to the present embodiment, the H-shaped steel flange of the structural material that is the column member 8 or the beam member 9 is connected to face the H-shaped steel flange of the column reinforcing member 21 or the beam reinforcing member 22, The force applied to the H-shaped steel of the structural material is transmitted via the H-shaped steel of the column reinforcing material 21 or the beam reinforcing material 22 even when no force is transmitted in the vicinity of the defect L of the structural material.

  In addition, according to the present embodiment, the column reinforcing member 21 and the beam reinforcing member 22 are not installed inside the electric dust collector 1 where corrosion or the like is likely to occur, but the existing column member 8 or beam member. Therefore, corrosion or the like hardly occurs in the column reinforcing material 21 or the beam reinforcing material 22 newly installed for reinforcement.

  In addition, since the column reinforcing member 21 or the beam reinforcing member 22 is installed only at an asymmetrical position with respect to the axis of the column member 8 or the beam member 9, that is, on one surface, there is an eccentricity in transmission of force. Arise. Therefore, the thickness of the column reinforcing member 21 or the beam reinforcing member 22 is adjusted so as not to cause eccentricity as much as possible, or the braces other than the column reinforcing member 21 or the beam reinforcing member 22 are reinforced. A material may be installed so that the entire structure 5 of the electrostatic precipitator 1 is not decentered.

  As mentioned above, according to 1st and 2nd embodiment of this invention, unlike the case where a steel plate is joined to the defect part L of the conventional H-section steel, and H-section steel is repaired, the structural yield strength of the whole electric dust collector Therefore, the strength necessary for the electrostatic precipitator 1 is ensured.

  Further, the column reinforcing members 11 and 21 and the beam reinforcing members 12 and 22 leave the column member 8 and the beam member 9 in which the defect portion L exists as they are, and the column member 8 or the beam member 9 in which the defect portion L is generated. Reinforce against. At this time, it is not necessary to remove the electrodes and the like inside the electrostatic precipitator 1, and the column reinforcing members 11 and 21 and the beam reinforcing members 12 and 22 can be attached as they are. Therefore, according to the present embodiment, the construction period can be shortened and the cost can be reduced.

DESCRIPTION OF SYMBOLS 1 Electric dust collector 5 Structure 6 Upper structure 7 Lower structure 8 Column material 9 Beam material 10 Wall material 11,21 Column reinforcement 12,22 Beam reinforcement 13 Box-shaped reinforcement part (1st member)
14 Connecting part (second member)
15, 17 Diaphragm 16 Rib 18 Opening reinforcement 19 Opening 31 Foundation 32 Mounting base

Claims (9)

A structural material that bears the force applied to the electrostatic precipitator;
A reinforcing material provided in the structural material in which the defect portion is generated and connected to the structural material at a position deviated from the defect portion;
With
The reinforcing material can withstand the stress and deformation caused by the load applied to the electrostatic precipitator by the structural material and the reinforcing material when no force is transmitted in the vicinity of the defect portion of the structural material. Strengthening structure of electrostatic precipitator with strength. The reinforcing material is
A first member provided parallel to the axial direction of the structural material around the defect portion;
A second member connected to the structural member and the first member;
The electric dust collector reinforcing structure according to claim 1, comprising: The structural material is a beam material and a column material,
The reinforcing material is
A beam reinforcing material provided parallel to the axial direction of the beam material;
A column reinforcing material provided parallel to the axial direction of the column material;
With
At least one of the beam reinforcing member and the column reinforcing member is connected to the structural member;
The electric dust collector reinforcing structure according to claim 1, wherein the beam reinforcing member and the column reinforcing member are connected to each other in the vicinity of a joint portion between the beam member and the column member.   4. The electrostatic precipitator reinforcing structure according to claim 1, wherein the reinforcing member has a quadrangular cross-sectional shape and is installed so as to surround the structure member. 5.   The electric dust collector reinforcing structure according to claim 1, wherein the reinforcing material is provided in parallel to an axial direction of the structural material including the defective portion and is connected to the structural material in which the defective portion is generated. The structural material is a pillar material or a beam material made of H-section steel,
The electric dust collector reinforcing structure according to claim 5, wherein the reinforcing material is made of H-shaped steel, and a flange of the reinforcing material is connected to face a flange of the structural material.   7. The electrostatic precipitator reinforcement structure according to claim 1, wherein a cross-sectional shape of the reinforcing member has a shape that does not interfere with an existing electrode provided inside the electrostatic precipitator. 8.   The electric dust collector reinforcing structure according to any one of claims 1 to 7, wherein the reinforcing material is provided without a gap from a wall material of the electric dust collector. The electrostatic precipitator provided with the electrostatic precipitator reinforcement structure of any one of Claim 1 to 8.

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