JPH0657436U - Discharge electrode structure of electrostatic precipitator - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a discharge electrode structure of an electrostatic precipitator capable of enlarging the electrostatic precipitator even when a material having low strength against welding or crimping is used as a discharge wire. [Structure] Both ends of the discharge line 24 are provided with openings 3 of a cap 30.
The discharge wire 24 is wound around the spiral groove 36 of the metal fitting body 28 via 0A, the end portion 24A of the discharge wire 24 is bent in the direction of the rod 38, and the discharge wire 24 is locked to the metal fitting body 28. Next, cap 3
After inserting the metal fitting body 28 into 0, the cap 30 is rotated to screw the metal fitting body 28 to the cap 30 so that the discharge wire 24 does not come off from the metal fitting body 28. Then
The rod member 38 of the metal fitting body 28 is inserted into the through holes 21A and 21B formed in the lateral pipe member 22 of the discharge electrode frame 22 and fastened with the nut 40. When the upper and lower nuts 40, 40 are tightened, the upper and lower metal fittings 26, 26 move in the direction of moving away from each other, so that the discharge wire 24 is stretched around the discharge electrode frame body 22. As a result, the titanium discharge wire 24, which is a material having low strength against welding or pressure bonding, can be attached to the discharge electrode frame body 22 without lowering its strength.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a discharge electrode structure of an electrostatic precipitator, and more particularly to a discharge electrode structure of an electrostatic precipitator configured by arranging discharge lines in parallel.

[0002]

[Prior art]

 Conventionally, discharge wires used for discharge electrodes of electrostatic precipitators include carbon steel wires and titanium wires, and since carbon steel wires are not required to have corrosion resistance, dry type electrostatic precipitator devices are usually used. Is used for. In this case, since the carbon steel wire can maintain strength against welding and pressure bonding, it is fixed by welding or pressure bonding to the discharge electrode frame.

On the other hand, a wet type electrostatic precipitator uses a titanium wire or the like which is a corrosion resistant material. However, although the titanium wire can retain its strength against bending, it is vulnerable to heat due to welding and plastic deformation due to pressure bonding. Due to this, there is a drawback that the welded part may be cut off, or the crimped part may be cut off when trying to fix by a crimping method.

Therefore, as shown in FIG. 4, the discharge line 1 made of titanium has its upper and lower ends wound around pulleys 2 and 3 and fixed with clips 4 and 5, and the upper pulley 2 is attached to the dust collecting chamber. The weight 7 is bolted to the lower pulley 3 while being bolted to the support beam 6 arranged on the ceiling. That is, when the titanium discharge wire 1 is used, the discharge electrode frame is not used and the weight 7 is used for tensioning.

[0005]

[Problems to be solved by the device]

 However, since the discharge electrode structure of the conventional electrostatic precipitator using the titanium wire 1 is a tension structure due to the weight 7, it cannot be adopted in a large electrostatic precipitator in which a large number of titanium wires 1 must be provided. That is, if a large number of titanium wires 1 are provided, the weight of the weight 7 increased by that amount damages the support beam 6.

The present invention has been made in view of such circumstances, and an electrostatic precipitator capable of enlarging the electrostatic precipitator even when a material having low strength against welding or crimping is used as a discharge wire. It aims at providing the discharge electrode structure of this.

[0007]

[Means for solving the problem]

 In order to achieve the above object, the present invention provides an electrostatic precipitator in which corona discharge is generated from a discharge electrode to charge particles in a dust-containing gas, and the charged particles are separated and collected by a collecting electrode. The discharge electrode is characterized in that a plurality of discharge lines formed to have a predetermined length are stretched and supported at predetermined intervals on a discharge electrode frame through metal fittings attached to both ends thereof. is doing.

[0008]

[Action]

 According to the present invention, a plurality of discharge lines are stretched and supported by the discharge electrode frame body at predetermined intervals via metal fittings attached to both ends thereof. As a result, the discharge line can be arranged without using a weight, so that it can be used in a large-sized electrostatic precipitator. Further, the discharge wire is wound at both ends on a spiral groove formed in the metal fitting body, and after being held by the metal fitting body by the tubular body so as not to come off from the metal fitting body, the fastening portion is connected to the discharge electrode frame body. It is tightened and stretched. As a result, a discharge wire made of a material weak in strength against welding or pressure bonding, for example, a discharge wire made of titanium can be attached to the discharge electrode frame without lowering its strength.

[0009]

【Example】

 A preferred embodiment of a discharge electrode structure of an electrostatic precipitator according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing an embodiment of a discharge electrode structure 10 of an electrostatic precipitator according to the present invention. This electrostatic precipitator is a wet electrostatic precipitator, and water distribution pipes 14, 14, ... Are arranged side by side on the ceiling of the dust collecting chamber 12. Further, nozzles 18, 18 ... For spraying steam toward the dust collecting electrodes 16, 16 ... Are attached to the water distribution pipes 14, 14.

According to the discharge electrode structure 10, the discharge lines 24, 24 ... Made of titanium are vertically arranged at predetermined intervals on the discharge electrode frame 22 formed by vertically and horizontally fixing the pipe members 20, 20. It is stretched in. In the discharge electrode frame body 22, the upper end portion 20A of the vertical pipe member 20 is fixed to the ceiling portion of the dust collecting chamber 12, and the lower end portion 20B of the vertical pipe member 20 is fixed to the floor portion of the dust collecting chamber 12. As a result, the dust collection chamber 12 is stably arranged.

Note that the details of the discharge line 24 are shown only on the right side portion of the discharge electrode frame 22 in the figure, and the other discharge lines 24, 24 ... Are indicated by chain double-dashed lines in the figure. Therefore, the details are omitted. The discharge wire 24 is stretched and supported by the horizontal pipe members 20 and 20 by metal fittings 26 and 26 attached to the upper and lower ends thereof. As shown in FIG. 2, the metal fitting 26 is composed of a cylindrical metal fitting body 28 and a tubular cap 30. The metal fitting body 28 is housed in the cap 30 and the cap 30 is rotated to rotate the screw 32. The metal fitting body 28 and the cap 30 are fixed to each other with the screw 34 and the screw 34 to be integrated.

A spiral groove 36 is formed on the peripheral surface of the metal fitting body 28 along the axial direction of the metal fitting body 28. Around the end of the discharge wire 24 inserted through the bottom opening 30A of the cap 30 is wound around the spiral groove 36. A bar 38 is fixed to the upper end of the metal fitting body 28. As shown in FIG. 3, the rod 38 is inserted into the through holes 21A and 21B formed in the vertical direction of the horizontal pipe 20 and the nut is attached to the screw portion 38A formed at the tip of the rod 38. It is fastened to the horizontal pipe member 20 by tightening 40.

Next, a procedure for attaching the titanium discharge wire 24 to the discharge wire frame 22 of the discharge electrode structure 10 configured as described above will be described. First, as shown in FIG. 2, both ends of the discharge wire 24 are wound around the spiral groove 36 of the metal fitting body 28 through the opening 30A of the cap 30. After the winding is completed, the end portion 24A of the discharge wire 24 is bent in the direction of the rod 38, and the discharge wire 24 is locked to the metal fitting body 28.

Next, as shown by the chain double-dashed line in FIG. 3, after inserting the metal fitting body 28 into the cap 30, the cap 30 is rotated to fix the metal fitting body 28 to the cap 30 with screws. As a result, both ends of the discharge wire 24 cannot be separated from the metal fitting body 28. Next, the rod members 38, 38 of the metal fitting bodies 28, 28 attached to both ends of the discharge wire 24 are formed in the horizontal pipe members 22, 22 above and below the discharge electrode frame 22, respectively, through holes 21A, 21B. And fasten with nuts 40, 40. When the upper and lower nuts 40, 40 are tightened, the upper and lower metal fittings 26, 26 move in the direction of separating from each other.

With this, since the discharge wire 24 can be stretched around the discharge electrode frame 22, the discharge wire 24 made of titanium, which is a material weak in strength against welding or crimping, can be used without lowering the strength. It can be attached to the frame 22. Therefore, according to the present embodiment, since the discharge wire 24 is framed, it is also adopted in a large-sized electrostatic precipitator as compared with the discharge electrode structure of the conventional electrostatic precipitator in which tension is arranged by using a weight. can do.

[0016]

[Effect of device]

 As described above, according to the discharge electrode structure of the electrostatic precipitator according to the present invention, a plurality of discharge lines are stretched and supported by the discharge electrode frame through the metal fittings attached to both ends thereof. Therefore, it can be used for a large-sized electric dust collector. Also, by winding both ends of the discharge wire around the spiral groove formed in the metal fitting body and holding the metal fitting body by the tubular body so that it does not come off from the metal fitting body, tightening the fastening part to the discharge electrode frame body, The discharge line was stretched. As a result, a discharge wire made of a material having a weak strength against welding or pressure bonding, for example, a titanium discharge wire can be attached to the discharge electrode frame without lowering the strength.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a discharge electrode structure of an electrostatic precipitator according to the present invention.

FIG. 2 is an exploded perspective view of a metal fitting applied to a discharge electrode structure of an electrostatic precipitator according to the present invention.

FIG. 3 is an explanatory view of mounting the metal fitting applied to the discharge electrode structure of the electrostatic precipitator according to the present invention.

FIG. 4 is an explanatory view of attaching a discharge wire of a conventional electrostatic precipitator.

[Explanation of symbols]

 10 ... Discharge electrode structure 22 ... Discharge electrode frame 24 ... Titanium discharge wire 26 ... Metal fitting 28 ... Metal fitting main body 30 ... Cap 36 ... Spiral groove 38 ... Bar material

Claims (3)

[Scope of utility model registration request] 1. An electrostatic precipitator in which corona discharge is generated from a discharge electrode to charge particles in a dust-containing gas and the charged particles are separated and collected by a dust collecting electrode, wherein the discharge electrode has a predetermined size. A discharge electrode structure for an electrostatic precipitator, in which a plurality of discharge wires formed in a length are stretched and supported by a discharge electrode frame body at predetermined intervals via metal fittings attached to both ends thereof. . 2. The metal fitting is formed with a spiral groove for spirally winding the vicinity of an end portion of the discharge wire on its surface, and a metal fitting provided with a fastening portion fastened to the discharge electrode frame body. The electrostatic precipitator according to claim 1, further comprising: a main body; and a tubular body that houses and holds the metal fitting body so that a discharge wire wound around the metal fitting body does not come off from the metal fitting body. Discharge electrode structure. 3. The discharge electrode structure of the electrostatic precipitator according to claim 1, wherein the discharge wire is made of titanium which is a corrosion resistant material.