JPH0645647U - Electric dust collector - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain an electrostatic precipitator with a cost reduction by improving the attachment of the electrostatic precipitator made of a concrete casing. A concrete casing electrostatic precipitator having a porcelain chamber 5 at an upper portion of a gas inlet portion and a gas outlet portion. 8a, a suspension beam 4a whose both ends are disposed on each support beam at a predetermined interval, and a dust collecting electrode 2a which is disposed over substantially the entire length of each suspension beam and whose upper end is attached to the lower part of each suspension beam. To provide.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electrostatic precipitator made of a concrete casing.

[0002]

[Prior art]

 Normally, the electrostatic precipitator is made of a steel plate casing. However, when treating highly corrosive gas dust, concrete casings are used.

A conventional electrostatic precipitator made of concrete casing will be described with reference to FIGS. 4 and 5. FIG. 5 is a BB view of FIG.

In FIG. 4, an insulator chamber 5 is provided above the gas inlet and the gas outlet. Below the insulators 5 on the gas inlet and gas outlet sides, a channel-type support fitting 1 is arranged in the gas flow direction. The length of the support metal fitting 1 at the end of the dust collecting chamber reaches the inner surface of the dust collecting chamber. Further, the support fitting 1 is fixed to the floor side with the channel 12 sandwiched by two support bolts 3 on both sides penetrating the floor of the insulator chamber 5.

A channel-type support beam 8 is welded to the end of the support fitting 1 on the dust collection chamber side in a direction orthogonal to the gas flow.

The suspension beam 4 is arranged in the gas flow direction. As shown in FIG. 5, the cross section of the suspension beam 4 is a split pin type having a square head with a corner at the upper end. The ends of each suspension beam 4 are attached to a support plate 6 which is attached to the support beam 8 at predetermined intervals. Further, the dust collecting electrode 2 is attached to the lower part of the suspension beam via the attachment fitting 7 at its upper portion.

In this case, the distance l between the gas inlet and outlet ends of the dust collecting electrode 2 and the inside of the insulator chamber 5 on the dust collecting chamber side is set to 1 = 560 mm.

[0008]

[Problems to be solved by the device]

 The conventional device has the following problems. 1) Since the suspension beam 4 is supported by the support fitting 1 and the support beam 8 through the support bolts, the weight is increased and the manufacturing and installation are complicated. 2) Since the suspension beam 4 is supported on the side surface of the support beam 8, the support plate 6 is required. Further, since the suspension beam 4 has a special cross-sectional shape, the structure is complicated and the cost is high. 3) The space of the non-dust collecting part (the space below the insulator room) is large, and the length of the dust collecting device becomes long. For this reason, the volume of the concrete casing (and the amount of concrete) and the external heat insulation area are unnecessarily large, which is uneconomical.

[0009]

[Means for Solving the Problems]

 The present invention takes the following measures to solve the above problems.

That is, in an electrostatic precipitator made of a concrete casing having an insulator chamber above the gas inlet and the gas outlet, the electrostatic precipitator is arranged in the vicinity of the lower portion of each insulator chamber so as to be orthogonal to the gas flow direction and horizontally. A support beam, a suspension beam whose both ends are arranged on each support beam at a predetermined interval, and a dust collection which is disposed over substantially the entire length of each suspension beam and whose upper end is attached to the lower part of each suspension beam. And electrodes.

[0011]

[Action]

 In the present invention, the support beam is arranged near the gas inlet and gas outlet of the electrostatic precipitator. Suspended beams with both ends of the self are placed on these support beams, and dust collecting electrodes are arranged over almost the entire length of the suspended beams.

That is, the gas inlet side end and the gas outlet side end of the dust collecting electrode can come close to the gas inlet and the gas outlet of the electric dust collector. Therefore, the dust collection space is larger and the non-dust collection space is smaller.

Therefore, it becomes more efficient and a significant cost reduction can be obtained.

[0014]

【Example】

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

FIG. 1 is a vertical cross-sectional view of the upper portion, FIG. 2 is a detailed view of the gas inlet portion of FIG. 1, and FIG. 3 is a view taken along line AA of FIG. The parts explained in the conventional example are given the same numbers and their explanations are omitted, and the parts relating to this invention will be mainly explained.

In FIG. 1, the support beam 8 is arranged in the vicinity of the lower side of the insulator chamber 5 on the gas inlet side and the gas outlet side orthogonal to the gas flow direction a. As shown in FIG. 2, the support beam 8 is a channel type one, and the support bolts 3 are formed on the floor surface of the insulator chamber 5 with the support bolts 3 having lower portions penetrating both side surfaces and upper portions penetrating the floor surface of the insulator chamber 5. It is hung and fixed. Fixing is done at both ends. The horizontal level adjustment is done with nuts.

The suspension beams 4 are arranged on the support beams 8 with their both ends facing in the gas flow direction a and at a predetermined interval. Then, it is bolted to the support beam 8 a via the mounting bracket 9.

A dust collecting electrode 2a is arranged below the suspension beam 4a. At this time, the dust collecting electrode 2a is made long. That is, the gas inlet / outlet side end is as close as possible to the end of the support beam 8a. In this embodiment, the distance from the inner surface of the insulator chamber 5 on the dust collecting electrode 2a side is set to l = 110 mm (560 in the conventional example). As shown in FIG. 3, the dust collecting electrode 2a is bolted to the hanging metal fitting 10 mounted on the lower surface of the hanging beam via the mounting metal fitting 7.

In the actual assembly, the concrete lid 11 is removed and the dust collecting electrode 2a is put in the casing. Next, the suspension beam 4a is inserted and attached, and the dust collecting electrode 2a is attached.

In the above, the support beam 8a is arranged near the gas inlet and the gas outlet of the electrostatic precipitator made of concrete casing. Further, suspended beams 4a having both ends thereof placed on these support beams are disposed, and the dust collecting electrode 2a is disposed over substantially the entire length of the suspended beam 4a.

That is, the gas inlet side end and the gas outlet side end of the dust collecting electrode 2a can come close to the gas inlet and the gas outlet of the electric dust collector. Therefore, the dust collection space has a larger structure than the conventional example.

Therefore, in the case of the present embodiment, the casing length is shortened by 450 mm at the gas inlet side and the gas outlet side, respectively, as compared with the conventional example, and a significant cost reduction can be obtained.

Further, as compared with the conventional device, the support metal fitting 1 is not necessary and the number of the support bolts 3 is half, so that the manufacturing / installation cost can be greatly reduced. Further, since the supporting plate 6 is not necessary and the suspension beam 4a is not a special shape and a commercially available H-shaped steel is used, the manufacturing and installation costs can be greatly reduced.

[0024]

[Effect of device]

 As described above, according to the present invention, a large dust collecting space can be secured and a non-dust collecting space can be reduced, resulting in a significant cost reduction. Further, since the dust collecting electrode mounting structure is simplified, a significant cost reduction can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an upper portion of an embodiment of the present invention.

FIG. 2 is a detailed vertical sectional view of a gas inlet / outlet portion of the embodiment.

FIG. 3 is a view taken along the line AA of FIG. 2 of the same embodiment.

FIG. 4 is an upper vertical cross-sectional view of a gas inlet / outlet portion of a conventional device.

FIG. 5 is a BB view of FIG. 4 of the embodiment.

[Explanation of symbols]

 2,2a Dust collecting electrode 3 Support bolt 4,4a Suspended beam 5 Insulator chamber 7 Mounting bracket 8,8a Support beam 9 Mounting bracket 10 Hanging bracket

Front page continuation (72) Hideyuki Maejima 1-1-1, Wadasaki-cho, Hyogo-ku, Kobe Sanbishi Heavy Industries, Ltd. Kobe Shipyard (72) Yoshimitsu Kawanishi 1-1, Wadasaki-cho, Hyogo-ku, Kobe No. 1 Sanryo Heavy Industry Co., Ltd. Kobe Shipyard (72) Inventor Katsumi Nakata 5-4-1 Wadamiyadori, Hyogo-ku, Kobe Mitsubishi Heavy Industries Environmental Engineering Co., Ltd. Kobe Branch

Claims (1)

[Scope of utility model registration request] 1. An electrostatic precipitator made of a concrete casing having an insulator chamber at the upper part of a gas inlet portion and a gas outlet portion. A beam, a suspension beam whose both ends are arranged at predetermined intervals on each of the support beams, and a dust collecting electrode which is disposed over substantially the entire length of each suspension beam and whose upper end is attached to the lower part of each suspension beam. An electrostatic precipitator comprising: