JP5793761B2 - In-room inspection equipment for electric dust collectors - Google Patents

Description

  The present invention relates to a polar chamber inspection apparatus for an electrostatic precipitator that enables appropriate maintenance of the electrostatic precipitator by easily visualizing the inspection of the polar chamber of the electrostatic precipitator.

The electric dust collector includes a smooth dust collecting electrode and a discharge electrode (see, for example, Patent Document 1).
In the electrostatic precipitator, when the dust collecting electrode is grounded and a negative high voltage is applied to the discharge electrode, a vigorous corona discharge is generated from the discharge electrode, and the space in the electrostatic precipitator is filled with negative ions and electrons. In this state, when a gas containing fine particles such as mist and dust passes through the space inside the electrostatic precipitator, the fine particles in the gas are negatively charged and move toward the dust collection electrode by the Coulomb force, accompanied by electrostatic coagulation. Move, adhere to the dust collection electrode, and collect dust.

  Moreover, in order to improve the dust collection efficiency of an electric dust collector, what repeatedly arrange | positioned the some cylinder as a dust collection electrode is used widely. Conventionally, as such a dust collecting electrode, there are a cylindrical dust collecting electrode having a circular cylindrical opening and a square cylindrical electric dust collector having a rectangular cylindrical opening.

  On the other hand, the discharge electrode of the electrostatic precipitator is used in many cases using a metal wire, and there are also many pipes, and many electrostatic precipitators in which these two types are mixed.

  In such an electrostatic precipitator, if the state of the dust collecting electrode and the discharge electrode is not maintained, the dust collecting efficiency is deteriorated. Therefore, maintenance for regular maintenance is required.

JP 2002-119889 A

The distance between the dust collecting electrode and the discharge electrode installed in such an electric dust collector is narrow, and the distance between the dust collection electrode and the discharge electrode is about 250 mm even in a wide case. On the other hand, the length in the longitudinal direction of the cylinder used as the dust collecting electrode is 4 m or more.
For this reason, when inspecting the dust collection electrode and the discharge electrode, the longitudinal direction of the cylinder of the collection electrode is long (deep) even though the distance between the collection electrode and the discharge electrode is narrow. Visual inspection with an inspector inside the electrostatic precipitator is virtually impossible.

Therefore, when inspecting the electrostatic precipitator, it is necessary to remove the discharge electrode upward or downward, and check each of the dust collection electrode and the discharge electrode, but since the discharge electrode is installed in a very narrow space, Removal of the discharge electrode must be performed in a very small place, which is a very difficult task.
Also, most of the dust collection electrodes are not structured so that each cylinder can be removed, and the height of the dust collection electrode arranged so that the longitudinal direction of the cylinder is vertical is very high. It is very dangerous to go inside the electric dust collector and check it.
For this reason, in the normal inspection, the inspector observes only a part that can be visually observed, infers the entire state, and determines the entire state.
However, in the observation in which only a part is visually observed, the inspector cannot accurately determine the entire state, which may lead to a decrease in efficiency due to deterioration of the part that cannot be visually observed.
In addition, in the case of entering the inside of the electric dust collector and inspecting the whole, it is necessary for the inspector to set up a scaffold in order to enter the interior, so that there is a problem that costs for installing the scaffold are required. In addition, the environment in which the inspector directly visually checks the dust collecting electrode to which dust has adhered is a harsh and dangerous work.

  The present invention has been made in view of the above circumstances, without removing the dust collecting electrode and the discharge electrode installed therein, which are difficult for an inspector to enter and exit, and without applying a scaffold. Therefore, it is an object of the present invention to enable an inspector to perform a safe and inexpensive inspection and to perform an accurate inspection by easily visualizing the inside of the dust collecting electrode.

The polar chamber inspection apparatus according to one aspect of the present invention includes:
A polar chamber for inspecting the inside of the polar chamber of an electric dust collector, comprising: a dust collecting electrode constituted by a plurality of polar chambers; and a discharge electrode arranged so as to penetrate the inside of the polar chamber in a substantially vertical direction. An inspection device,
A base frame which is arranged so as to be movable in a substantially vertical direction inside the polar chamber and which surrounds the discharge electrode at an angle of less than 360 degrees;
At least one imaging device disposed on a side surface of the base frame such that an optical axis direction is a direction toward the discharge electrode;
It is characterized by providing.

The polar chamber inspection apparatus according to one aspect of the present invention includes:
The base frame has a pair of opposed frames,
The imaging device is arranged in at least one of the pair of frames.

In the polar chamber inspection apparatus of one aspect of the present invention,
At least a pair of illumination devices arranged around the imaging device on the side surface of the frame where the imaging device is arranged,
It is further provided with the feature.

In the polar chamber inspection apparatus of one aspect of the present invention,
The imaging device is disposed on both of the pair of frames,
The at least one pair of lighting devices are disposed on both of the pair of frames.
It is characterized by that.

In the polar chamber inspection apparatus of one aspect of the present invention,
The polar chamber inspection apparatus, wherein the shape of the opening of the polar chamber constituting the dust collecting electrode is a square tube having an N-gon (N is an integer value of 3 or more).

  According to the present invention, the inspector can safely and inexpensively perform the inspection without removing the dust collecting electrode which is difficult for the inspector to enter and exit and the discharge electrode installed in the dust collecting electrode and without placing the scaffold. It is possible to perform an accurate inspection by easily visualizing the inside of the dust collection electrode.

It is sectional drawing which shows schematic structure of the wet electric dust collector used as the test object of the polar chamber inspection apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows schematic structure inside the housing of the wet electric dust collector of FIG. It is a top view which shows schematic structure inside the housing of the wet electric dust collector of FIG. It is a block diagram which shows the structure of the hardware of the polar chamber inspection apparatus which concerns on one Embodiment of this invention. It is a perspective view of the inspection apparatus main body concerning one embodiment of the present invention. It is the side view and bird's-eye view of the test | inspection apparatus main body which concerns on one Embodiment of this invention. It is a perspective view which shows schematic structure of the wet-type electrostatic precipitator to which the polar chamber inspection apparatus which concerns on one Embodiment of this invention is applied. It is the bird's-eye view which applied the polar chamber inspection apparatus to the dust collection pole which makes the cylinder whose opening part has a round shape the polar chamber. It is an enlarged view of FIG. It is a perspective view of FIG. It is the bird's-eye view which applied the polar chamber inspection apparatus to the dust collecting electrode which uses the cylinder whose opening part has hexagonal shape as a polar chamber. It is an enlarged view of FIG. FIG. 12 is a perspective view of FIG. 11.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing a schematic configuration of a wet electrostatic precipitator 1 to be inspected by an in-room inspection device according to an embodiment of the present invention.
Specifically, FIG. 1 (A) and FIG. 1 (B) are cross-sectional views showing a schematic configuration of the external appearance of the wet electrostatic precipitator 1, and are cross-sectional views seen from different directions substantially perpendicular to each other.

The wet electric dust collector 1 is provided with an upper casing 11, a dust collecting electrode 22, a lower casing 13, and a frame 14.
The casing of the wet electrostatic precipitator 1 is configured by combining the upper casing 11, the dust collection electrode 22, and the lower casing 13 in this order from above. The casing of the wet electrostatic precipitator 1 is fixed by a frame 14 so as to be spaced apart from the ground by a predetermined distance. In the present embodiment, conductive FRP (Fiber Reinforced Plastics) is adopted as the material of the casing of the wet electrostatic precipitator 1.

FIG. 2 is a perspective view showing a schematic configuration inside the housing of the wet electrostatic precipitator 1.
FIG. 3 is a top view illustrating a schematic configuration inside the housing of the wet electrostatic precipitator 1.

  As shown in FIG. 2 and FIG. 3, an upper grid 21, a dust collecting electrode 22, a lower grid 23, an electrode rod 24, a discharge wire 25, a weight 26, An upward spray nozzle 27 and a cleaning pipe 28 are provided.

  As shown in FIG. 2, the upper grid 21, the dust collection electrode 22, and the lower grid 23 are spaced apart from each other by a predetermined distance in that order from above, and are substantially parallel to each other in the horizontal direction. It is arranged.

As shown in FIG. 2 and FIG. 3, the dust collection electrode 22 is formed by repeatedly arranging a plurality of electrode chambers with a rectangular tube as a unit (hereinafter, such units are referred to as “polar chambers”). Composed.
Specifically, hereinafter, one of the substantially horizontal directions is referred to as “vertical direction”, and a direction perpendicular to the vertical direction is referred to as “lateral direction”. In this case, by repeatedly arranging N units in the vertical direction and repeating M units in the horizontal direction (hereinafter referred to as “N × M”), the dust collection electrode 22 is configured.
Here, N and M are arbitrary independent integer values. In the present embodiment, as shown in FIGS. 2 and 3, the number of electrode chambers of the dust collecting electrode 22 is N × M = 9 × 9. It is said that.
In FIG. 2 to FIG. 4, the number of the electrode chambers of the dust collection electrode 22 is N × M = 3 × 3 for the convenience of explanation only. In other words, in FIG. 2 to FIG. 3, only the central 3 × 3 polar chambers among the 9 × 9 polar chambers constituting the dust collection electrode 22 are shown for convenience of explanation.
Here, a dust collecting electrode configured as a collection of rectangular tubes, such as the dust collecting electrode 22, is generally called a “square tube collecting electrode” and has a dust collecting electrode area per unit volume. Since it is large, it has the feature that a compact design is possible.
In this embodiment, conductive FRP is adopted as the material of the dust collection electrode 22.

In this embodiment, the discharge electrode for the dust collection electrode 22 is constituted by an electrode rod 24 and a discharge wire 25.
As shown in FIG. 2, the electrode rod 24 is disposed so as to penetrate the center inside of a predetermined electrode chamber of the dust collecting electrode 22 in a substantially vertical direction, the upper end is fixed to the upper grid 21, and the lower end is Fixed to the lower grid 23.
As shown in FIG. 2, the discharge line 25 is suspended from the upper grid 21 and is disposed so as to penetrate the center inside of a predetermined electrode chamber of the dust collection electrode 22 in a substantially vertical direction. The discharge line 25 is also connected to a weight 26 provided on the upper part of the lower grid 23 so as to have a tension that does not loosen.
A negative DC high voltage V is directly applied to the electrode rod 24 from the DC high voltage generator 30. On the other hand, the negative DC high voltage V from the DC high voltage generator 30 is applied to the discharge line 25 via the electrode rod 24 and the upper grid 21.

The upward spray nozzle 27 is disposed above the four corners of each electrode chamber of the dust collecting electrode 22 and ejects cleaning water flowing through the cleaning pipe 28 as a fine mist in a substantially vertical upward direction.
Here, “fog” refers to a state in which several to several hundred water droplets having a micron-order diameter are included in a 1 cm ³ space. In the present embodiment, the cleaning water is ejected from the upward spray nozzle 27 in a substantially vertical upward direction as water droplets having a diameter of about 200 to 800 microns.
The mist ejected from each of the upward spray nozzles 27 disposed above the four corners of each electrode chamber of the dust collection electrode 22 forms a water film that covers the entire side surface of each electrode chamber of the dust collection electrode 22. That is, a wet wall is formed on the side surface of each electrode chamber of the dust collecting electrode 22 by the cleaning water ejected as mist from the upward spray nozzle 27. As a result, the growth of fine particles such as mist and dust attached to the dust collecting electrode 22 can be prevented, and these fine particles can be cleaned and removed more reliably than before.

  In addition, as shown in FIG. 1, you may make it provide the downward spray nozzle 29 in the predetermined upper position spaced apart from the upper end part of the dust collecting electrode 22 only predetermined distance similarly to the conventional wet electric dust collector.

Next, the structure of the polar chamber inspection apparatus 41 used for the wet electric dust collector 1 will be described.
FIG. 4 is a block diagram showing a hardware configuration of the polar chamber inspection apparatus 41 according to the embodiment of the present invention.
The polar chamber inspection device 41 includes an elevating device 51, an inspection device main body 52, a monitor / illumination control device 53, and a power supply device 54.
The lifting device 51 includes a lifting winch 61. The elevating winch 61 drives the inspection apparatus main body 52 in the vertical direction based on an instruction from the monitor / illumination control apparatus 53. The movement of the inspection apparatus main body 52 using the lifting device 51 will be described in detail with reference to FIG.

The inspection device main body 52 includes an imaging device 71 and a plurality of illumination devices 72 to 75, and is attached to a base frame 91 (see FIG. 5 described later) constituting the inspection device main body 52.
The imaging device 71 includes an optical lens unit (not shown) and an image sensor (not shown), and outputs a subject image incident from the optical lens unit as imaging data from the image sensor for monitoring and illumination control. Supply to device 53.
The plurality of illumination devices 72 to 75 are configured to include LEDs (Light Emitting Diodes), and are supplied with electric power from the power supply device 54 via an illumination lighting switch 82 described later. In addition, in this embodiment, although the illuminating devices 72-75 are comprised so that LED may be included, it is not restricted to this, If it is a lighting fixture which can obtain predetermined illumination intensity, such as an incandescent lamp and a fluorescent lamp There is no particular limitation. In the present embodiment, four illumination devices 72 are attached. However, the number of illumination devices 72 is not limited to this, and may be two or any number of one or more.

The monitor / illumination control device 53 includes a monitor device 81, an illumination lighting switch 82, and a recording terminal 83.
The monitor device 81 is configured by, for example, a liquid crystal display, and sequentially displays captured images represented by the imaging data supplied from the imaging device 71.
The lighting switch 82 is connected to each of the lighting devices 72 to 75 so that the power supplied from the power supply device 54 is supplied to the lighting devices 72 to 75, and the lighting devices 72 to 75 are individually switched by a user switching operation. Can be turned on and off.
The recording terminal 83 is connected to the monitor device 81 and functions as an interface for recording the contents of the imaging data to be displayed on the monitor device 81 on a recording medium.

  The power supply device 54 supplies power to the lifting device 51, the inspection device main body 52, and the monitor / lighting control device 53.

Next, the inspection apparatus main body 52 of the above-described polar chamber inspection apparatus 41 will be described in more detail.
FIG. 5 is a perspective view of the inspection apparatus main body 52 according to an embodiment of the present invention.

The inspection apparatus main body 52 includes a base frame 91.
The base frame 91 includes a pair of opposed frames 92a and 92b, and a connection frame 93 that engages with each of the pair of frames 92a and 92b.
The frames 92a and 92b and the connection frame 93 are each formed in a rectangular flat plate shape having substantially the same dimensions.
Specifically, the frames 92a and 92b constituting the base frame 91 are connected to opposite sides of the connection frame 93 and are arranged so as to be substantially parallel to each other. Thus, the U-shaped base frame 91 is configured so that each frame 92a, 92b and the connection frame 93 surround the electrode rod 24 (see FIG. 2) or the discharge line 25 (see FIG. 2) as a discharge electrode. ing.
The dimensions of the frames 92a and 92b and the connection frame 93 are smaller than the dimensions of the polar chamber constituting the dust collection electrode 22 (see FIG. 2 or FIG. 3).
Note that the base frame 91 is not particularly limited to the example of FIG. 5 and surrounds the electrode rod 24 (see FIG. 2) or the discharge line 25 (see FIG. 2) at an angle of less than 360 degrees (meaning that it does not become a closed curve). If it is formed, it is enough.

The imaging device 71 and the illumination devices 72 to 75 are installed on the surfaces of the frames 92a and 92b facing each other.
Specifically, the imaging device 71 includes the frames 92a and 92b constituting the base frame 91 such that the optical axis direction is directed to the electrode rod 24 (see FIG. 2) or the discharge line 25 (see FIG. 2). In the side surface, it arrange | positions toward the inner side.
The illumination devices 72 to 75 are arranged inward on the side surfaces of the frames 92a and 92b constituting the base frame 91 so as to illuminate a direction substantially the same as the optical axis direction of the optical lens unit of the imaging device 71. Has been.
Here, among the configurations installed in the frames 92a and 92b, for the configuration installed in the frame 92a, “a” is added to the reference for convenience, and for the configuration installed in the frame 92b, for convenience. The description will be made by attaching “b” to the reference numeral.
Here, only the configuration installed in the frame 92a will be described, but the configuration installed in the frame 92b is arranged in the same configuration as the frame 92a. The description is omitted here.

FIG. 6 is a side view and an overhead view of the inspection apparatus main body 52 according to an embodiment of the present invention.
6A is a side view of the inspection apparatus main body 52 (on the frame 92a side), and FIG. 6B is an overhead view of the inspection apparatus main body 52. FIG.

  As shown in FIG. 6 (1), an imaging device 71a is disposed at a substantially central position of the frame 92a. A pair of lighting devices 72a and 73a are arranged in the vertical direction of the imaging device 71a with the imaging device 71a as a center, and a pair of lighting devices 72a and 74a are arranged in the horizontal direction of the imaging device 71a. Yes.

Support rollers 101a, 102a, 103a, 104a, 105a, and 106a with shock absorbers are arranged on the frame 92a that constitutes the base frame 91 so that the inside of the polar chamber can be moved in a substantially vertical direction.
As shown in FIG. 6A, the support rollers 101a, 102a, 103a, and 104a are formed so as to protrude in the width direction at end portions in the width direction of the frame 92a.
The distance between the tips of the support rollers 101a and 102a disposed at the opposing positions of the frame 92a is formed with a size smaller than the size inside the polar chamber constituting the dust collecting electrode 22. Similarly, the distance between the tips of the support rollers 103 a and 104 a is formed with a size smaller than the size inside the polar chamber constituting the dust collecting electrode 22.
In addition, as shown in FIG. 6B, the support rollers 105a and 106a are formed to project outward in the outer end portion of the frame 92a. The distance between the tip of the support roller 105a arranged outside the frame 92a and the tip of the support roller 105b arranged outside the frame 92b is smaller than the size inside the polar chamber constituting the dust collecting electrode 22. Is formed. Similarly, the distance between the tip of the support roller 106a arranged outside the frame 92a and the tip of the support roller 106b arranged outside the frame 92b is larger than the dimension inside the polar chamber constituting the dust collection electrode 22. It is formed with small dimensions.
Accordingly, the support rollers 101a, 102a, 103a, 104a, 105a, and 106a can prevent the base frame 91 from coming into direct contact with the inside of the polar chamber constituting the dust collecting electrode 22, and the base frame 91 Can reduce the impact of
Further, even when the support rollers 101a, 102a, 103a, 104a, 105a, 106a are in contact with the inside of the polar chamber, the rollers rotate to smoothly move the inspection apparatus main body 52 in the height direction. Can be.

In addition, hooks 111a and 112a are disposed on the frame 92a.
As shown in FIG. 6A, the hooks 111a and 112a are formed to protrude upward at the upper end of the frame 92a in the height direction.
The hooks 111a and 112a are formed in a ring shape so that the wire 122 (see FIG. 7) connected to the lifting winch 61 can be locked.

Next, operation | movement of the above polar chamber inspection apparatus 41 is demonstrated.
FIG. 7 is a perspective view showing a schematic configuration of the wet electrostatic precipitator 1 to be inspected by the polar chamber inspection apparatus 41 according to one embodiment of the present invention.

First, the inspector attaches the pulley 121 by suspending it from the upper grid 21 arranged at the upper part of the pole chamber in which the electrode rod 24 of the wet electrostatic precipitator 1 is arranged.
Next, the inspector lowers the wire 122 extended from the lifting winch 61 into the polar chamber through which the electrode rod 24 is inserted via the pulley 121. At this time, the wire 122 is inserted from below through the polar chamber adjacent to the electrode chamber through which the electrode rod 24 to be photographed is inserted, and is lowered through the pulley 121 to the electrode chamber through which the electrode rod 24 is inserted. To.
The inspector attaches hooks 111 a, 111 b, 112 a, 112 b provided on the inspection apparatus main body 52 to the end portion of the lowered wire 122, and connects the lifting winch 61 and the inspection apparatus main body 52 to each other. To do.
When the inspector operates the monitor / illumination control device 53 and drives the lifting winch 61 to wind up the wire 122, the inspection device main body 52 attached to the wire 122 is gradually lifted, and the electrode rod It is moved upward in the polar chamber through which 24 is inserted.
When the wire winch 61 is driven by driving the lifting winch 61, the inspection apparatus main body 52 attached to the wire 122 is gradually lowered and moved downward in the polar chamber through which the electrode rod 24 is inserted. The
At this time, the inspector arranges the electrode rod 24 so as to be sandwiched between the frames 92a and 92b constituting the base frame 91 of the inspection apparatus main body 52, so that the imaging device 71a arranged inside each of the frames 92a and 92b. 71b, the electrode rod 24 can be photographed.

  Thereby, in the polar chamber inspection apparatus 41 according to the present embodiment, without removing the dust collecting electrode and the discharge electrode installed in the dust collecting electrode that is difficult for the inspector to enter and exit, and without applying a scaffold, An inspector can safely and inexpensively perform an inspection. In addition, since the dust collecting electrode and the discharge electrode can be easily visualized, the electric dust collector can be inspected accurately and easily.

  In this embodiment, the polar chamber constituting the dust collecting electrode 22 to which the polar chamber inspection apparatus 1 is applied is an example applied to the dust collecting electrode 22 having a cylinder whose opening is a quadrangular shape as the polar chamber. However, the present invention is not limited to this. For example, as shown in FIGS. 8 to 10, a dust collecting electrode 22 a having a cylindrical chamber whose opening is a round shape, or a cylinder having a hexagonal shape as shown in FIGS. 11 to 13. The polar chamber inspection apparatus 1 may be applied to the dust collection electrode 22b having a polar chamber as a polar chamber.

An example in which the polar chamber inspection apparatus 1 is applied to the dust collection electrode 22a having a cylinder having a round opening as a polar chamber will be described with reference to FIGS.
FIG. 8 is an overhead view in which the polar chamber inspection apparatus 1 is applied to a dust collection electrode 22a having a cylindrical chamber having a round opening.
FIG. 9 is an enlarged view of FIG.
FIG. 10 is a perspective view of FIG.

As shown in FIGS. 8 to 10, the distance between the front end of the support roller 101 a and the front end of the support roller 101 a disposed at the opposite position of the frame 92 a is smaller than the dimension inside the polar chamber constituting the dust collection electrode 22 a. It is formed by dimensions. Similarly, the distance between the tip of the support roller 103a and the tip of 104a is formed with a dimension smaller than the dimension inside the polar chamber constituting the dust collecting electrode 22a.
Further, the distance between the tip of the support roller 105a arranged outside the frame 92a and the tip of the support roller 105b arranged outside the frame 92b is smaller than the dimensions inside the polar chamber constituting the dust collection electrode 22a. It is formed by dimensions. Similarly, the distance between the tip of the support roller 106a arranged outside the frame 92a and the tip of the support roller 106b arranged outside the frame 92b is larger than the dimensions inside the polar chamber constituting the dust collection electrode 22a. It is formed with small dimensions.
Therefore, even when the polar chamber inspection apparatus 1 is applied to the dust collecting electrode 22a having a round cylindrical opening as the polar chamber, the base frame 91 is provided inside the polar chamber constituting the dust collecting electrode 22. Can be prevented from coming into direct contact, and the impact on the base frame 91 can be reduced.
In addition, the support rollers 101a, 102a, 103a, 104a, 105a, and 106a rotate, whereby the inspection apparatus main body 52 can be smoothly moved in the height direction.

An example in which the polar chamber inspection apparatus 1 is applied to the dust collecting electrode 22b having a cylinder whose opening has a hexagonal shape as a polar chamber will be described with reference to FIGS.
FIG. 11 is an overhead view in which the polar chamber inspection apparatus 1 is applied to a dust collecting electrode 22b having a cylinder whose opening is a hexagonal shape as a polar chamber.
FIG. 12 is an enlarged view of FIG.
FIG. 13 is a perspective view of FIG.

As shown in FIGS. 11 to 13, the distance between the front end of the support roller 101a and the front end of the support roller 101a disposed at the opposite position of the frame 92a is smaller than the internal dimension of the polar chamber constituting the dust collection electrode 22b. It is formed by dimensions. Similarly, the distance between the tip of the support roller 103a and the tip of 104a is formed with a dimension smaller than the dimension inside the polar chamber constituting the dust collection electrode 22b.
Further, the distance between the tip of the support roller 105a arranged outside the frame 92a and the tip of the support roller 105b arranged outside the frame 92b is smaller than the dimension inside the polar chamber constituting the dust collecting electrode 22b. It is formed by dimensions. Similarly, the distance between the tip of the support roller 106a arranged outside the frame 92a and the tip of the support roller 106b arranged outside the frame 92b is larger than the dimension inside the polar chamber constituting the dust collection electrode 22b. It is formed with small dimensions.
Therefore, even when the polar chamber inspection apparatus 1 is applied to the dust collecting electrode 22b whose opening is a cylinder having a hexagonal shape, the base frame 91 is provided inside the polar chamber constituting the dust collecting electrode 22. Direct contact can be suppressed, and impact on the base frame 91 can be reduced.
In addition, the support rollers 101a, 102a, 103a, 104a, 105a, and 106a rotate, whereby the inspection apparatus main body 52 can be smoothly moved in the height direction.

  As described above, the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

For example, as the dust collection electrode 22 of the above-described embodiment, a square tube type dust collection electrode having a square tube having a square shape as an electrode chamber (unit) is employed, but is not particularly limited thereto.
Specifically, for example, the shape of the opening of each electrode chamber constituting the rectangular tube type dust collecting electrode is not particularly required to be a square, and may be an N-gon (N is an integer value of 3 or more).
Furthermore, for example, a dust collecting electrode constituted by an assembly of a plurality of polar chambers may be employed, with a cylinder having an opening other than an N-gonal shape such as a circular shape as a polar chamber.
Here, in the case of a rectangular tube-shaped dust collecting electrode in which the shape of the opening is an N-angular square tube, the region formed by being surrounded by a plurality of polar chambers is the intersection of the plurality of polar chambers, , Meaning each of the N corners of each polar chamber.

DESCRIPTION OF SYMBOLS 1 Wet electrostatic precipitator, 21 Upper grid, 22 Dust collector electrode, 23 Lower grid, 24 Electrode rod, 25 Discharge line, 41 Polar chamber inspection device, 51 Lifting device, 52 Inspection device body, 53 Monitor / certification control device, 54 Power supply Device, 61 Elevating winch, 71 Imaging device, 72, 73, 74, 75 Illumination device, 81 Monitor device, 82 Illumination switch, 83 Recording terminal, 91 Base frame, 92a, 92b frame, 93 Engagement frame, 101a, 102a, 103a, 104a, 105a, 106a Support roller, 111a, 112a hook, 121 pulley, 122 wire

Claims (4)

A polar chamber for inspecting the inside of the polar chamber of an electric dust collector, comprising: a dust collecting electrode constituted by a plurality of polar chambers; and a discharge electrode arranged so as to penetrate the inside of the polar chamber in a substantially vertical direction. An inspection device,
A base frame which is arranged so as to be movable in a substantially vertical direction inside the polar chamber and which surrounds the discharge electrode at an angle of less than 360 degrees;
A first imaging device and a second imaging device arranged on a side surface of the base frame such that an optical axis direction is a direction toward the discharge electrode;
With
The base frame has a pair of opposed frames,
Of the pair of frames, the first imaging device is arranged in one frame, and the second imaging device is arranged in the other frame.
Polar chamber inspection equipment. At least a pair of illumination devices arranged around the imaging device on the side surface of the frame where the imaging device is arranged,
The polar chamber inspection apparatus according to claim 1 further provided. The at least one pair of lighting devices are disposed on both of the pair of frames.
The polar chamber inspection apparatus according to claim 2. The polar chamber inspection apparatus according to any one of claims 1 to 3, wherein a shape of an opening of the polar chamber constituting the dust collecting electrode is an N-square (N is an integer value of 3 or more).

Images