JPS6237388A - Abnormality detector for electrode of electrolytic cell for metal - Google Patents

Abstract

PURPOSE:To permit the inspection of many electrolytic cells in a short period by detecting the abnormally heat generating part of the electrolytic cells from the video of an IR camera picked up with the cells and specifying the abnormally heat generating electrode from a graphic scale signal indicating the position of the electrode. CONSTITUTION:The IR video camera is imposed to face downward on a carriage 21 on a crane 20. The IR video camera is positioned above the electrolytic cell 31A. The crane 20 is moved toward B on rails 3 and the images up to the electrolytic cells 31A-31T are picked up. The carriage is then moved toward A and the images of the electrolytic cells 32A-32T, 33A-33T are successively picked up. The position of the electrolytic cell in the vertical direction thereof is detected when a proximity switch 22 passes a detecting piece 4. The detected position is recorded as a pulse signal in the audio track of a video tape. The images of hot points 5, 5' of spot light sources which emit IR rays are simultaneously picked up and are recorded as video signals. The position of the abnormally light emitting part is thus known from the graphic scale signal when the abnormally light emitting part is displayed red in the video by a video reproducer.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a device for detecting abnormalities such as electrode short circuits in metal electrolytic refining.

[Conventional technology]

A conventional device for detecting an abnormality in the electrodes of a metal electrolytic refining tank is disclosed in Japanese Patent Publication No. 57-87861. FIG. 5 shows details of the electrode section of the above device. In the figure, a positive electrode (101), which is a crude metal to be refined, is placed in contact with a power supply (108) connected to the positive electrode of a power source. The cathode (102) is a conductor rod (106) connected to the power supply part (104) connected to the negative pole of the power supply.
) are in contact with each other.

In one electrolytic cell (107), several tens of pairs of the positive electrode (101) and negative electrode (102) are arranged side by side.
Immersed in dissolution (105). The above electrolytic cell (1
07) has a large number of tanks arranged, for example, 96 tanks vertically and 4 tanks horizontally, for a total of 884 tanks, to form a set of electrolytic refining equipment. Although the distance between the positive electrode (101) and the negative electrode (102) is set to 8 to 4 cm in order to improve the efficiency of electrolytic refining, a short circuit may occur between the two electrodes due to various reasons. In order to detect such a short circuit, in the conventional device described above, the current increases due to the short circuit and the conductor rod (106)
The heat-generating part (106a) generates heat, and the normal cathode (102a)
) is configured so that an infrared thermometer detects the generation of infrared rays stronger than the heat generating portion (106a) of the conductor rod (106). The infrared thermometer (114) is mounted on a trolley (118) that can move on the crane (110) shown in FIG. 6 in the direction of the left and right arrows (112). When inspecting, stop it directly above the electrolytic cell (107) as shown in the figure.
The range indicated by dotted lines (124A) and (124B) is scanned by a scanning device (not shown), and several tens of heat generating parts (106a) of the electrolytic cell (107) are sequentially inspected, for example, from the left end to the right end. 1 piece fJIJ
When the inspection of 2q Yuzu (107) is completed, the crane (110)
) is a direction perpendicular to the plane of the paper (here, the crane (110) travels a predetermined distance, stops directly at the next electrolytic cell (107), and measures again. The structure is such that all of the electrolytic cells (107) in 96 columns and 4 rows are inspected by running the trolley (111) in the direction of the arrow (112).

[Problem that the invention seeks to solve]

The above-mentioned conventional device stops the crane (110) and trolley (118) at each voltage detection point and scans the entire tank.
ζIt took a long time. Furthermore, since metal electrolysis uses a large current, problems due to noise were unavoidable when the detection output of the infrared thermometer on the crane was led to the observation room, which was separated by a considerable distance using cables. Furthermore, the conductor rod (
In order to inspect only the heat generating part (106a) of 106) with an infrared thermometer, other parts of the electrode and the power supply part (108)
, (104) or conductor rod C106) and the power supply part (10
4) There was a problem in that it was not possible to inspect for abnormal heat generation at contact points with other parts.

[Means for Solving the Problems] The abnormality detection device for electrodes in a metal electrolytic cell according to the present invention images an electrolytic cell having at least one pair of electrodes using an infrared video camera mounted on a transport device, and
A means for detecting the vertical position of the electrolytic cell is provided, and a lateral position of the electrolytic cell is determined by infrared light emitting means provided in each electrolytic cell.

The position of the electrode in the image of the infrared video camera is displayed using a graphic scale signal.

[Effect]

It is possible to detect abnormally heating parts of the electrolytic cell by using an image taken by an infrared video camera that captures an image of the electrolytic cell, and it is also possible to identify the abnormally heating electrode by using a graphic scale signal indicating the position of the electrode.

[Embodiment] FIGS. 1 and 2 show block diagrams of embodiments of the recording device (□□□) and the reproducing device (P) of the present invention. Recording device■
The infrared video camera (1) is a device that detects infrared rays and outputs a video signal.
It is loaded downward onto a trolley whose top can be moved on rails in the direction of the arrow hole.

The crane (7) is supported by a rail (3) so as to be movable in the direction of arrow CB while maintaining a predetermined height above the electrolytic cell placed on a plane. In this embodiment, there are 12 electrolytic cells in total, 3 rows horizontally and 4 rows vertically.
The infrared video camera (1) loaded on the trolley is moved by the movement of the crane ■ in the direction of the arrow) and the movement of the trolley in the four directions of the arrow.
81T), (82T) ~ (82A)
, (8aA) to (88T). Electrolysis 4 (81
A large number of poles (2) are arranged in A), and the arrangement is similar to that of the conventional example shown in FIG. When the crane ■ moves in the direction of arrow (B).

For example, proximity switch 4, which is provided on the crane (7) as a detection means for detecting the vertical position of the electrolytic cell, outputs a signal every time it passes a detection piece (4) provided on the rail (3). It is made to be. The imaging range of the infrared video camera (1) is set so as to capture an image of one electrolytic cell (81A) on its screen from above the cart. The output signals of the infrared video camera (1) and the proximity switch (goods) are recorded by a video tape recorder Q.
However, the output signal of the proximity switch 4 is recorded as a pulse signal on the audio track of the video tape. FIG. 2 shows the configuration of a playback device for playing back a videotape recorded as described above. The video output of the videotape player (6) is applied to the CRT (6), which is a color display device using a cathode ray tube, via the image synthesis circuit (■), and the signal of the proximity switch recorded on the audio track is The data is input to a central processing unit (hereinafter abbreviated as CPU) CPU for performing arithmetic processing. The keyboard (goods) is the CPU (
It is a device for inputting instructions to a machine (goods). The pointing device is used to create a graphic scale (described later) in advance, and uses a light pen to indicate the position of the most clearly captured image of the tank on the CRT and input it to the CPU El. By doing so, the CPU calculates the scale coordinate signal and stores the data in the scale memory (b). The signal of the proximity switch 4 recorded on the video tape is converted into a tank address by the CPON and digitally displayed on the digital display device. Graphic scale data is stored in the scale frame memory so that the data read from the graphic scale memory (b) is displayed at a predetermined position on the CRT (6) with an accuracy comparable to that of pixels. .

The image synthesis circuit - is a circuit that synthesizes the video signal output from the video tape player (υ) and the output of the scale frame memory.The scale position adjustment knob = a+ is the
6) It is a device for adjusting the soil scale position. The operation of the hot points (5) and (5') will be explained next using an infrared video camera configured not to detect light other than infrared light such as visible light that becomes a noise component. In the metal electrolysis device shown in FIG. 8, when abnormal heat generation of the electrodes is investigated.

For example, the infrared video shows it directly above the electrolytic tank (81A) on the upper left. When started in this state, the crane (1) starts moving downward in the diagram (in the direction of the electrolytic cell (81T)), and the infrared video camera (1) images the electrolytic cells (81A) and (81B).
).

(81C) The images of "." are sequentially recorded by the video tape recorder as the crane 4 moves. Output a pulse signal, and that signal is recorded by the audio track of the video tape recorder Q. When the electrolytic cell (81A) is imaged, the hot points (5) and (g) within the imaging range are also imaged at the same time and recorded as a video signal.
) moves to the position of the lowest electrolytic cell (81T) in FIG. 8, and all electrolytic cells (81A) to (81
When the imaging of T) is finished, is there one car? D moves to the right and this time images are sequentially taken and recorded upward from the electrolytic cell (82T).

Next, the abnormality detection work will be explained with reference to FIG. Video tape recorder ■ Video tape player (6)
When played back, the video signal is applied to the CRT (6) and displayed on the cathode ray tube, but since the crane (7) is continuously moving, the image on the CRT m is constantly moving from top to bottom in the figure. ing. When visually observing such an image, when the moving screen is observed and the abnormal heat generating part is displayed in red, the video tape player (2) is set to still image mode and observed. FIG. 4A shows an example of a display screen on a CRT (6). In the figure, an image for an electrolytic cell image is displayed within the screen. The infrared video camera (1) detects only infrared rays (66B) and if it is particularly bright or red in color, point L66B of the electrolytic cell image ■
) indicates that abnormal heat is occurring in the area.

At this time, the digital display device shown in FIG.

"1" is displayed, indicating that this image is of a multilayer film. On the other hand, CPU f43' is immersed "y"
-/RenoMori0η Based on the data, a signal for displaying the graphic scale on the screen of the CRT (6) is generated in the scale frame memory as shown in FIG. The graphic scale can also display an identification display amount for each lO scale, for example. Then, by operating the scale position adjustment knob group, the displayed electrode turns out to be the sixth electrode from the left. Since the cart (c) always moves in the above-mentioned trajectory order, whether the current screen is in column 81 or column %83 is calculated by the CPU as follows.

That is, as mentioned above, the track center of the trolley 2υ shown in Figure 8 is always set to start from the electrolytic tank (81A), so for example, the electrolytic tank (81T) is the 81st tank from the top. Assuming there is, digital display @
The displayed value of (7) is "81". Next, when the cart passes the electrolytic cell (82T), the digital display @)
The display changes to "82". And the trolley is an electrolytic tank (82
When A) is reached, "62" will be displayed. Therefore, by assigning serial numbers to the tanks in advance, it is easy to know which tank is displayed.

Next, a method of creating the above-mentioned graphic scale will be explained. First, the electrolytic cell (8) was detected using an infrared video camera (1).
1A) hot point (5) l (a) is simultaneously imaged. This is once recorded and then played back using the video tape player tune shown in FIG. 2 and displayed on the screen.

Then, point the hot point images (66A) and (66A') using the pointing device's light pen Sakaki. Then, hot point (5), (a)
Numerical data representing the distance between is input to the CPU-.

Next, when you input the number of electrodes in the electrolytic cell (81A) from the keyboard (b) and give a calculation instruction, the CPU performs a calculation to divide the distance between hot points (5) and (6) by the number of electrodes. The scale coordinates and scale numbers are stored in the scale frame memory 01. Graphic scale from electrolytic cells (81A) to (81T) is hot point (5)
, (5'), but the electrolytic cell (82
Since it is formed based on the graphic scale (6) and (10) of A) to (82T), even if there is some error in the position when the trolley object moves and stops on the crane gJ, the graphic No error occurs on scale 6. Also, hot point (5),
When forming a graphic scale without using (≦), it can also be created by specifying the position of the virtual electrode on the screen of the CRT f4a using a light pen of a pointing device. The type of scale is CRT f
It is also possible to display the coordinates on the screen of 43 - a point image as shown in Figure 4B.

〔Effect of the invention〕

As described above, according to the present invention, since images of electrolytic cells are taken without stopping the crane, many electrolytic cells can be inspected in a short time. Also, since an infrared camera is used to image the entire electrolytic cell, abnormal heat generation occurring in any part can be detected. Furthermore, since the imaged data is recorded near the infrared camera, it is not affected by noise. Another advantage is that the position of the abnormal electrode can be determined by generating a graphic scale signal using the infrared light generating means.

[Brief explanation of the drawing]

1 and 2 are block diagrams showing a recording device and a reproducing device according to an embodiment of this invention, FIG. 8 is a diagram showing a metal electrolytic device according to an embodiment of this invention, and FIG. 4A and FIG. 4B 5 is a diagram showing an example of a display in an embodiment of the present invention, FIG. 5 is a diagram showing the configuration of a conventional electrolytic cell, and FIG. 6 is a diagram showing the configuration of a conventional crane. (1): Infrared video camera, (4): Detection piece, (5)
:Hot point, (1): Crane, c! 2: Proximity switch. (81A): [1 tank, m: CRT%Wl: Graphic scale memory

Claims (3)

[Claims] (1) An infrared video camera arranged to image an electrolytic cell having at least one pair of electrodes, a transport device for moving the infrared video camera, and a transport device for detecting the vertical position of the electrolytic cell. position detecting means provided, infrared light generating means provided in each electrolytic cell to detect the lateral position of the electrolytic cell, and a graphic scale signal indicating the position of the electrode in the image of the electrolytic cell taken by the infrared video camera. A device for detecting an abnormality in an electrode in a metal electrolytic cell, comprising: means for generating an image of the electrolytic cell; and means for displaying an image of the electrolytic cell and a graphic scale signal on the same display screen. (2) Claim 1, comprising a recording means for recording an image of the electrolytic cell and an image of the infrared light generating means by an infrared video camera, and a detection signal of a position detecting means provided on the transport device. An abnormality detection device for electrodes in metal electrolytic tanks. (3) The metal electrolytic cell according to claim 1, wherein the means for generating the graphic scale signal includes means for dividing the interval between the infrared light generating means provided in each electrolytic cell by the number of electrodes in each electrolytic cell. Electrode abnormality detection device.