JP2002226861A - Method for diagnosing inside of carbonization chamber of coke oven and device for diagnosing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for diagnosing the inside of a coke oven carbonization chamber, which enables the diagnosis of the inside of the carbonization chamber at a small investment cost. SOLUTION: The method and the device for diagnosing the inside of the coke oven carbonization chamber are characterized by inserting from the charging opening of a carbonization chamber 6 an imaging device 3 for imaging an one-dimensional or slit-like visual field to send the obtained image signals, taking the inner wall 7 of the carbonization chamber in the visual field of the imaging device 3, simultaneously moving the imaging device 3 in the vertical direction, and obtaining the two-dimensional image of the inner wall 7 of the carbonization chamber on the basis of the obtained image signals.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diagnosis method and a diagnosis apparatus for remotely observing a furnace wall in a coke oven carbonization chamber to diagnose a damage situation.

[0002]

2. Description of the Related Art A coke oven has a large number of coking chambers and combustion chambers connected alternately. Coal is charged into the coking chamber, and 900 to 1100.degree. Is continuously applied for about 20 hours to dry distill coal and produce coke. When the carbonization is completed, the coke is discharged and the coal is charged and heating is started again.

Each carbonization chamber has a height of about 6.5 m, a width of about 0.4 m, and a length of about 16 m, and forms a very narrow and deep (long) furnace space. ing. The furnace wall of the coking chamber is covered with refractory bricks, and each refractory brick is roughly 120 mm in height, 360 mm in length, and 11 in thickness.
0 mm. The coke oven supplies heat to the coking chamber by heating the combustion chamber adjacent to each coking chamber to a high temperature and using the heat to heat the refractory bricks on the walls of the coking chamber to a high temperature. Accordingly, the refractory brick used for the coking chamber furnace wall (the partition wall with the combustion chamber) is exposed to high temperatures for a long period of time, and every time coking of coal is completed, coke is extruded and discharged by a coke extruder. Refractories are subject to coke pressure and are susceptible to damage by thermal, chemical, or mechanical stress. That is, joints on the wall, cracks in the brick, peeling, carbon adhesion, or irregularities on the wall, curvature,
It is easy to cause a change in kiln width. Damaged parts are likely to spread further due to local excessive force applied during coke extrusion,
Further, the damaged portion has a different heat propagation characteristic from that of the normal portion, which is not preferable for producing a homogeneous coke. Relatively small damaged parts are filled with refractory by spraying, and refractory bricks are set in the missing bricks and sprayed on the joints to repair them. However, it is difficult to find and locate the damage. For this reason, in a situation where the carbonization chamber is glowing red, it is necessary to observe the required portion of the furnace wall, usually the entire surface of the furnace wall, with the required resolution, to find the damage and to grasp the position. is important.

In the method of observing the inner wall of the furnace from the coke oven kiln using a short time between operations, the inside of the oven has to be observed from the outside of the kiln because the temperature inside the oven is high. As mentioned above, the depth of the furnace is small while it is deep,
The furnace wall refractory at the back of the furnace was observed at a shallow angle from a distance,
Observing the surface is very difficult.

[0005] In Japanese Patent Application Laid-Open No. 3-105195, a camera carrying boom equipped with a camera (normal two-dimensional ITV camera) is inserted into a furnace from a kiln opening of a coke oven carbonization chamber.
A method of photographing the inner wall surface of the furnace while moving in the furnace length direction is disclosed. However, because the width of the coking chamber is very narrow, if the camera is directly facing the furnace wall, the distance between the camera and the furnace wall cannot be obtained. Since there is no camera, mount the camera diagonally with respect to the wall and shoot with the wall in view at a shallow angle. In the image of the furnace wall taken in this way, the image on the side closer to the camera has a narrower shooting range, while the image on the side farther from the camera has a wider shooting range, but the target is only small, and the required resolution is obtained. I can't. Also, with such an imaging method, it is difficult to focus over the entire field of view. In the above-mentioned publication, an invention is disclosed in which the obtained perspective image is image-processed and converted into a front image as if it were photographed while facing directly to the furnace wall, but even if such image processing is performed. However, there is no change in the point that the resolution of the portion photographed at a distance is not sufficiently obtained, and it is difficult to focus over the entire field of view.

[0006] In Japanese Patent Application Laid-Open No. H11-106755, a camera that emits an image signal from a kiln opening of a coke oven carbonization chamber is inserted into the interior of the carbonization chamber, and the condition of the furnace wall is observed based on an image of the furnace wall. In the method, the camera is arranged so as to capture an image of the furnace wall of the carbonization chamber with a line of view or a slit, and the camera is moved in the furnace length direction, and image data is captured each time the camera moves a short distance. Collecting the image data and sequentially linking the image data in accordance with the moving distance in the furnace length direction to create an image of a large area of the coking chamber furnace wall as one image. An observation method and apparatus are disclosed. As a result, in the situation where the carbonization chamber is glowing, the necessary part of the furnace wall,
That is, by observing the entire surface of the furnace wall at a required resolution, it is possible to discover the damage and grasp the position and state of the damage.

[0007]

SUMMARY OF THE INVENTION Japanese Patent Application Laid-Open No. H11-1067
The above-mentioned invention described in No. 55 is suitable for observing the surface of the furnace wall of the coking chamber, but the equipment is large-scale,
The installation of the equipment requires high equipment costs.

[0008] In the case of the method of inserting from the kiln opening of the coking chamber, the weight of the imaging device is supported by a support provided with a roller or a shoe on the bottom of the furnace, but the bottom of the coking furnace has irregularities or residuals. There is a case where there is coke and the image pickup apparatus vibrates during the insertion, and the image is blurred.

The present invention provides a method and an apparatus for coke oven coking chamber diagnosis, which can perform in-furnace diagnosis mainly at the lower part of the charging entrance where the damage is particularly likely to occur in the brick surface of the coking chamber with a small investment amount. Aim.

[0010]

That is, the gist of the present invention is as follows. (1) An imaging device 3 for imaging a one-dimensional or slit-shaped visual field and generating an imaging signal is inserted from a charging port 9 of a carbonization chamber 6,
The imaging device 3 is moved up and down while capturing the coking chamber furnace wall 7 in the field of view of the imaging device 3, and a two-dimensional image of the coking chamber furnace wall 7 is obtained based on the obtained imaging signal. Diagnosis method for coke oven coking chamber. (2) A two-dimensional image of at least the lower half of the coking chamber furnace wall 7 is obtained by directing the optical axis 10 of the imaging device 3 below the coking chamber, and at least the coking chamber furnace wall is obtained by pointing the optical axis 10 above the coking chamber. (7) The coke oven coking chamber diagnostic method according to the above (1), wherein a two-dimensional image of the upper half is obtained. (3) The optical axis 10 of the imaging device 3 is further directed toward the coking chamber furnace bottom 8 to obtain a two-dimensional image of the coking chamber furnace bottom 8 as well, wherein the above (1) or (2) is provided. Diagnosis method for coke oven coking chamber. (4) A plurality of two-dimensional images obtained by inserting the imaging device 3 from the plurality of inlets 9 are combined to obtain a two-dimensional image of the coking chamber furnace wall 7 over a wide area in the longitudinal direction. The diagnostic method for a coke oven carbonization chamber according to any one of (1) to (3). (5) An imaging device 3 that images a one-dimensional or slit-shaped visual field and generates an imaging signal, and the imaging device 3 is inserted from the charging port 9 of the coking chamber 6 to display the coking chamber furnace wall 7 with the visual field of the imaging device 3. A coke oven comprising: a moving device 4 that moves the imaging device 3 in the vertical direction while capturing the image; and an image processing device that obtains a two-dimensional image of the coking chamber furnace wall 7 based on the obtained imaging signal. Diagnostic device for carbonization room. (6) At least a two-dimensional image of the lower half of the coking chamber furnace wall 7 is obtained by directing the optical axis 10 of the imaging device 3 below the coking chamber, and at least the coking chamber furnace wall with the optical axis 10 pointing above the coking chamber. (7) The coke oven coking chamber diagnostic apparatus according to the above (5), wherein a two-dimensional image of the upper half is obtained. (7) The above (5) or (6), wherein the optical axis 10 of the imaging device 3 can be further directed to the coking chamber furnace bottom 8, and a two-dimensional image of the coking chamber furnace bottom 8 is also obtained. A diagnostic apparatus for a coke oven carbonization chamber according to claim 1. (8) The above-mentioned (5) to (7), wherein a plurality of the imaging devices 3 and the moving devices 4 are provided, and the imaging devices 3 are simultaneously inserted into the plurality of charging ports 9 to perform imaging in the carbonization chamber. The coke oven coking chamber diagnostic apparatus according to any one of the above. (9) There is a lateral moving device 15 that moves the imaging device 3 and the moving device 4 above the carbonization chamber in the longitudinal direction of the carbonization chamber. The coke oven coking chamber diagnostic apparatus according to any one of (5) to (8) above, wherein images of the coking chamber under a plurality of charging ports are obtained by the same imaging device 3 and moving device 4. (10) The image processing apparatus combines a plurality of two-dimensional images obtained by inserting the imaging device 3 from the plurality of entrances 9,
The coke oven coking chamber diagnostic apparatus according to any of (5) to (9) above, wherein a two-dimensional image of a wide range in the longitudinal direction of the coking oven wall 7 is obtained. (11) The above-mentioned (5) to (1), further including a cooling device for cooling the imaging device 3 inserted into the carbonization chamber.
0) The diagnostic device for a coke oven carbonization chamber according to any one of the above items 1). (12) The diagnostic apparatus for a coke oven coking chamber according to any one of the above (5) to (10), wherein a cooling device for cooling the imaging device 3 inserted into the coking chamber is not provided.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The imaging device 3 of the present invention has a one-dimensional linear array imaging device, or has a two-dimensional imaging device, and limits the field of view to a narrow slit-like range with slits. As shown in FIG. 1, the angle between the imaging device 3 and both ends of the field of view is φ. The imaging device 3 is inserted into the coking chamber from the loading port 9 above the coking chamber. In the coking chamber, the direction of the optical axis 10 from the imaging device 3 keeps a constant angle θ with the coking chamber furnace wall 7. When the angle θ is 90 °, that is, when the direction of the optical axis 10 is set to be perpendicular to the furnace wall 7, the interval between the imaging device 3 and the observation point 11 is the shortest. When the angle θ is reduced, the distance between the imaging device 3 and the observation point 11 increases, and the distance between both ends of the observation point 11 captured in a one-dimensional or slit-shaped field of view also increases. Linear observation point 1
The direction 1 is preferably a horizontal direction.

The imaging device 3 is moved up and down in the carbonization chamber while keeping the angle θ constant. As shown in FIG. 6A, since the imaging device is moved from 3a to 3b and the observation point is also moved from 11a to 11b in the vertical direction, the imaging signal from the moving imaging device 3 is accumulated in the image processing device. By doing so, the image of the furnace wall portion scanned by the observation point 11 can be output to the image display device 13 as a two-dimensional display image 14 as shown in FIG.

The vertical movement of the imaging device 3 is performed by a moving device 4 arranged above the carbonization chamber. The moving device 4 has a length capable of lowering the imaging device 3 inserted from the charging port 9 to a position where the imaging device 3 can be imaged to the vicinity of the furnace bottom 8, a gear drive (rack and pinion type, etc.), a hydraulic drive , Can be moved up and down by means of a winch drive.

When the angle θ is set with the optical axis 10 of the imaging device 3 facing downward, an area where imaging is not possible occurs at the upper end of the carbonization chamber. Similarly, if the optical axis 10 of the imaging device 3 is set upward, an area where imaging cannot be performed occurs at the lower end of the carbonization chamber. Therefore, as shown in FIG. 2A, the optical axis 10 of the imaging device 3 is set downward, and the position of the imaging device is changed from 12a to 1
2b to obtain a two-dimensional image of at least the lower half of the furnace wall 7 of the coking chamber. Further, as shown in FIG.
By moving to 2d, a two-dimensional image of at least the upper half of the coking chamber furnace wall 7 is obtained, and by combining the two two-dimensional images, a two-dimensional image of the entire furnace wall in the vertical direction of the coking chamber can be obtained. Become. Here, as shown in FIG.
It is also possible to separately perform imaging with the optical axis 10 of the imaging device 3 set downward and imaging with the optical axis 10 set upward, using a plurality of imaging devices 3 as shown in FIG. ,
The optical axis 10 of the imaging device 3a may be set upward and the optical axis 10 of the imaging device 3b may be set downward so that imaging can be performed simultaneously.

The diagnosis in the coking chamber needs to be performed on both of the two furnace walls 7 facing each other. As shown in FIGS. 2A to 2C, it is also possible to separately image two furnace walls 7 using one imaging device 3, and to use two imaging devices 3 for two surfaces. Of the furnace wall 7 can be simultaneously performed.

In the diagnosis in the coking chamber, it is important to diagnose not only the furnace wall 7 but also the furnace bottom 8. In the present invention, the two-dimensional image of the coking chamber furnace bottom 8 can be obtained by further directing the field of view of the imaging device 3 toward the coking chamber furnace bottom 8. Even when the angle θ is kept constant, a part of the furnace bottom 8 can be imaged by bringing the imaging device 3 close to the furnace bottom 8. in this case,
Since the distance between the imaging device 3 and the furnace bottom 8 changes and the distance between both ends of the observation portion 11 changes, adjustment is performed in image processing. The two-dimensional image of the hearth 8 can also be obtained by stopping the vertical movement of the imaging device 3 and keeping the distance between the imaging device 3 and the furnace bottom 8 constant and shaking the direction of the optical axis 10 of the imaging device 3. .

By reducing the angle θ between the optical axis 10 of the imaging device 3 and the furnace wall 7 or by increasing the viewing angle φ of the imaging device 3, the distance between both ends of the observation portion 11 is increased. be able to. By making the distance between both ends of the observation point 11 larger than the distance between the adjacent entrances 9, a plurality of two-dimensional images obtained by inserting the imaging device 3 from the plurality of entrances 9 a and 9 b as shown in FIG. By combining the two-dimensional images, a two-dimensional image of a wide range in the longitudinal direction of the coking chamber furnace wall 7 can be obtained.

If the angle θ is too small, even a slight change in θ due to a slight vibration will affect the captured image. Therefore, in order to obtain a precise image, it is necessary to keep θ at a certain angle or more. As a result, when the distance between both ends of the observation point 11 becomes smaller than the distance between the adjacent charging ports 9, a plurality of two-dimensional images are combined as described above to connect a wide range in the longitudinal direction of the coking chamber furnace wall 7. A two-dimensional image cannot be obtained. On the other hand, in the damage state of the coking chamber furnace wall 7, there is a fact that the furnace wall portion immediately below the charging entrance is more severely damaged than other portions. Therefore,
Even if there is an area that cannot be imaged in the middle of the charging port 9 and the charging port 9, a sufficient diagnostic effect can often be obtained as long as the diagnosis device of the present invention can diagnose the furnace wall 7 immediately below the charging port.

By arranging a plurality of imaging devices 3 and moving devices 4 in the diagnostic apparatus of the present invention, it is possible to perform imaging simultaneously at a plurality of loading openings 9. If the number of arrangements of the imaging device 3 and the moving device 4 is equal to the number of the entrances 9, the imaging can be performed at all the entrances 9 at once.

When only one set of the imaging device 3 and the moving device 4 is provided, or when the number of the imaging devices 3 and the moving device 4 is smaller than the number of the entrances 9, the same imaging device 3 and the moving device 4 are used. It is necessary to perform imaging at a plurality of entrances 9 by using. In the present invention, as shown in FIG. 5, there is provided a lateral moving device 15 for moving the imaging device 3 and the moving device 4 above the carbonization chamber in the longitudinal direction of the carbonization chamber. And the moving device 4, and the same imaging device 3 and the moving device 4 can obtain images of the carbonization room under a plurality of loading ports. The lateral moving device 15 is arranged on a track 17 above the carbonization chamber via wheels 16,
Moving up can allow for lateral movement.

In the type in which the observation device is inserted from the kiln opening of the coking chamber as in the invention described in JP-A-11-106755, the observation device is held by an arm having the same length in the longitudinal direction of the coking chamber. Usually, the observation device moves in the furnace while making contact with the furnace bottom 8 of the carbonization chamber by wheels or sleds. Since the brick bottom and the furnace bottom deposits are present in the coking chamber furnace bottom 8, if the observation apparatus is moved at high speed in the coking chamber, the observation apparatus will be shaken, and a good observation image cannot be obtained. Therefore, the moving speed is up to 7-10m /
Need to be limited to minutes. On the other hand, in the present invention, the imaging device 3 is inserted from the charging port 9 above the carbonization chamber, and the diagnostic device 2 is inserted.
Does not come into contact with any part in the carbonization chamber, so that even if the imaging device 3 is moved up and down at a high speed, no shake occurs. Therefore, the moving speed of the diagnostic device 2 of the present invention can be made higher than that of the diagnostic device which performs observation by inserting from the kiln opening.
/ Min or more moving speed can be set. Further, in the type inserted from the kiln opening, it is necessary to move the distance in the longitudinal direction of the carbonization chamber (normally about 16 m), whereas in the type inserted from the charging port 9 as in the present invention, the height of the carbonization chamber is increased. Since it is only necessary to move a distance in the vertical direction (usually 6 to 8 m), the moving distance is short in addition to the high moving speed, and the time during which the diagnostic apparatus 2 stays in the furnace at one time is reduced.

Since the inside of the carbonization chamber into which the diagnostic apparatus 2 of the present invention is inserted is in a high-temperature state where the temperature becomes red, the cooling apparatus usually cools a part of the diagnostic apparatus 2 inserted into the furnace. By employing a water-cooling method in which the imaging device 3 and the moving device 4 are protected by a water-cooling jacket, it is possible to perform diagnosis while the diagnostic device 2 is inserted in the furnace for a long time. However, as described above, the diagnostic device 2 of the present invention requires a shorter staying time in the furnace as compared with the diagnostic device inserted from the kiln opening, so even if the water cooling capacity is lower than that of the kiln opening type. It is possible to sufficiently protect the diagnostic device 2. Furthermore, if an air-cooling system that protects by blowing air is adopted, it is difficult to stay in the furnace for a long time, but it is possible to stay in the furnace for a short time. It is also possible to employ.

In the present invention, since the vertical movement speed during imaging can be increased as described above, the movement speed is increased as much as possible, and the staying time of the imaging device 3 in the furnace is minimized. It is also possible not to have a cooling device for cooling the imaging device 3 inserted into the camera. Thereby, the equipment cost of the diagnostic device can be reduced.

The imaging device 3 used in the present invention, which has a linear or slit field of view, most commonly uses an imaging device having a one-dimensional array of light receiving devices. CCD (Charge Coupled Device) CCD image sensor etc. in which units are arranged in series. The number of units is 2048 units x 1 row, 4096 units x 1 row, or 5150 units x 1 row. Can be. In order for the field of view to be slit-shaped,
The arrangement of the light receiving elements does not need to be one line, and may be two lines or several lines. Alternatively, a normal two-dimensional image sensor may be used, and an image of a specific slit-shaped field of view of the entire field of view may be used. However, it is possible to obtain an element having a higher resolution in the length direction of the slit-shaped visual field by using a one-dimensional image sensor than by using a two-dimensional image sensor.

The imaging device 3 is moved up and down by the moving device 4. During this movement, the angle θ between the optical axis 10 of the imaging device 3 and the furnace wall 7 is always maintained at a constant angle. Therefore, as the imaging device 3 moves, the observation point 11 of the furnace wall that the imaging device 3 views as a field of view also changes. Move the same distance as. During the movement, every time the imaging device 3 moves a short distance, the imaging data captured by the imaging device 3 in a linear or slit-shaped visual field is collected. Normally, imaging data is collected each time the user moves a short fixed distance. The image data is totaled by the image processing apparatus, and, for example, one slit-shaped image data is displayed in a horizontal direction on a two-dimensional screen, and the image data is arranged in the vertical direction at every moving distance of the imaging interval. indicate. Since the moving distance of the imaging interval is set to be short, for example, 1 mm, a two-dimensional image can be created by arranging the imaging data in this manner. In the case of the image of the furnace wall 7, in the created image, the vertical direction is the furnace height direction, the horizontal direction is the furnace length direction, and an image is obtained as if the furnace wall 7 was viewed from a distance directly in front. be able to. The focus is in all places, the required resolution is satisfied in any places, and there is no need for image processing such as enlarging / reducing an image depending on the place. By arranging the one-dimensional image data as described above,
As a method of creating a two-dimensional image, use a general-purpose method used when a two-dimensional image is created as image data by scanning a one-dimensional reader with a general image scanner. Is possible.

The imaging device 3 of the diagnostic apparatus of the present invention mainly diagnoses the state of damage to the furnace wall by catching self-luminous light from the furnace wall. Therefore, a better image can be obtained when no external light is incident. When a method of inserting a diagnostic device from a kiln as in the prior art is employed, imaging is inevitably performed with the kiln opening, so that the vicinity of the kiln is affected by external light. On the other hand, in the present invention, since the kiln mouth is closed and only the necessary entrance 9 is opened to perform imaging,
A good image can be obtained by reducing the influence of external light and the variation in the brightness of the furnace wall.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The shape of the carbonization chamber is 6.5m in height and 0.4 in width
m, the length is 16 m, and the furnace top has four inlets 9 at an interval of 3 m. The furnace wall 7 of this coke oven carbonization chamber is
Diagnosis was performed using the in-furnace diagnosis apparatus 2 in the coking chamber. This diagnostic device has two sets of moving devices 4, and each moving device 4 includes one imaging device 3. Each of the imaging devices 3 is a one-dimensional CCD camera having 2048 units × 1 row of light receiving elements. The camera can observe a linear range with a viewing angle (φ) of 90 °. Optical axis 10 of imaging device 3
Is 10 ° and φ = 90 °, the distance between both ends of the observation point 11 is 2300 mm. The cooling structure of the imaging device is a triple tube structure,
A power supply and a signal cable were passed through the center, cooling water was supplied at a rate of about 10 liter / min between the inner cylinder and the middle cylinder, and a drain line was provided between the middle cylinder and the outer cylinder. The moving lance 4 was vertically set so that the line of the observation point 11 was horizontal, and the optical axis 10 was directly opposed to the wall.

The moving device 4 moves up and down in the furnace at a speed of 20 m / min, and collects image data of each image pickup device 3 every time it moves 1 mm. The image data is sent to the image processing apparatus, and the display image 14 is created as an image on the display and a print image. This information is sequentially connected by the image combining means of the image processing apparatus in accordance with the moving distance in the furnace height direction. By moving the furnace 6.5 m in the height direction, the image information is joined, and as a result, a two-dimensional image displaying the entire height of the furnace wall with a width of 2300 mm is obtained. Images were taken by inserting cameras from multiple entrances, but by displaying each entrance image data in parallel at the same height based on height information, an image of almost the entire carbonized room, mainly at the bottom of the entrance Could be obtained.

Thus, the images of the left and right furnace walls were created by the method of the present invention. From the images, it was possible to clearly read joint breaks, brick cracks, peeling, carbon adhesion, and wall irregularities on the wall, and to accurately grasp the damaged portions. By repairing refractories based on the information on these damage conditions and damaged locations, appropriate refractory repairs can be performed in a timely manner, and the service life of carbonized room refractories can be extended and the repair time can be shortened. Was completed.

[0030]

The diagnostic apparatus for coking in a coke oven according to the present invention employs a method of diagnosing the inside of a furnace by inserting it from a charging port, so that the equipment cost is lower than that of a diagnostic apparatus inserted from a kiln opening. It is possible to suppress. In addition, since the moving speed in the furnace can be increased, and the moving distance in the furnace is shorter than that of a diagnostic device inserted from the kiln mouth, it is possible to shorten the staying time in the furnace. Can reduce the cooling capacity, or make the cooling device an air cooling device,
Further, a diagnostic device having no cooling device can be provided.

Also, the diagnostic apparatus of the present invention does not contact the inner wall of the coking chamber, and in particular does not move while contacting the furnace bottom of the coking chamber, so that a clear image without blur can be obtained.

According to the present invention, the observation can be made mainly on the brick surface below the entrance where the damage is particularly severe.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a diagnostic apparatus of the present invention in a carbonization chamber, where (a) is a longitudinal direction of the carbonization chamber and (b) is a view showing a width direction of the carbonization chamber.

FIG. 2 is a diagram showing a situation in which the entire optical wall of the coking chamber is imaged while changing the optical axis of the imaging device.

FIG. 3 is a diagram showing a diagnostic device of the present invention using two imaging devices.

FIG. 4 is a diagram showing a state in which an image is displayed on an image display device by scanning a furnace wall.

FIG. 5 is a diagram showing a lateral movement device of the imaging device of the present invention.

FIG. 6 is a diagram showing a situation in which images taken from a plurality of adjacent entrances are combined.

[Explanation of symbols]

 Reference Signs List 2 Diagnostic device 3 Imaging device 4 Moving device 5 Coke oven 6 Coking chamber 7 Furnace wall 8 Furnace bottom 9 Loading port 10 Optical axis 11 Observation point 12 Imaging device position 13 Image display device 14 Display image 15 Lateral moving device 16 Wheel 17 Rail

Claims (12)

[Claims] 1. An imaging device for imaging a one-dimensional or slit-shaped visual field and generating an imaging signal is inserted from a charging port of a coking chamber, and the imaging device is vertically moved while capturing the furnace wall of the coking chamber in the visual field of the imaging device. A coke oven coking chamber diagnostic method, characterized by obtaining a two-dimensional image of the coking oven wall based on the obtained imaging signal. 2. A two-dimensional image of at least a lower half of the coking chamber furnace wall is obtained by directing the optical axis of the imaging device to the lower part of the coking chamber. The coke oven coking chamber diagnostic method according to claim 1, wherein a two-dimensional image is obtained. 3. The coke oven coking chamber diagnosis according to claim 1, wherein the optical axis of the imaging device is further directed to the coking chamber furnace bottom to obtain a two-dimensional image of the coking chamber furnace bottom. Method. 4. The method according to claim 1, wherein a plurality of two-dimensional images obtained by inserting an imaging device from a plurality of charging ports are combined to obtain a two-dimensional image of a wide range in the longitudinal direction of the coking chamber furnace wall. The diagnostic method for a coke oven carbonization chamber according to any one of claims 1 to 3. 5. An imaging apparatus for imaging a one-dimensional or slit-shaped field of view and generating an imaging signal, and inserting the imaging apparatus from a charging port of a coking chamber to capture a furnace wall of the coking chamber in a field of view of the imaging apparatus. A coke oven coking chamber diagnostic apparatus comprising: a moving device that moves an imaging device in a vertical direction; and an image processing device that obtains a two-dimensional image of a coking chamber furnace wall based on an obtained imaging signal. 6. A two-dimensional image of at least a lower half of the furnace wall of the coking chamber with the optical axis of the imaging device facing downward in the coking chamber, and at least an upper half of the furnace wall of the coking chamber with the optical axis facing upward in the coking chamber. The coke oven coking chamber diagnostic apparatus according to claim 5, wherein a two-dimensional image is obtained. 7. The coke oven according to claim 5, wherein the optical axis of the imaging device can be further directed to the furnace bottom of the coking chamber to obtain a two-dimensional image of the furnace bottom of the coking chamber. Diagnostic device for carbonization room. 8. The imaging apparatus according to claim 5, wherein a plurality of the imaging devices and the moving devices are provided, and the imaging device is inserted into a plurality of charging ports at the same time to perform imaging in the coking chamber. Diagnostic equipment for coke oven coking chamber. 9. A horizontal moving device for moving the imaging device and the moving device in the longitudinal direction of the carbonization chamber above the carbonization chamber, and moving the imaging device and the moving device by the horizontal moving device to obtain the same image. The diagnostic apparatus for a coke oven coking chamber according to any one of claims 5 to 8, wherein the apparatus and the moving device obtain images of the coking chamber under a plurality of charging ports. 10. The image processing apparatus combines a plurality of two-dimensional images obtained by inserting an imaging device from a plurality of charging ports to obtain a two-dimensional image over a wide range in a longitudinal direction of a furnace wall of a coking chamber. The coke oven coking chamber diagnostic apparatus according to any one of claims 5 to 9, wherein: 11. The coke oven coking chamber diagnostic apparatus according to claim 5, further comprising a cooling device for cooling the imaging device inserted into the coking chamber. 12. The coke oven coking chamber diagnostic apparatus according to claim 5, wherein a cooling device for cooling the imaging device inserted into the coking chamber is not provided.