Inspection device during coke oven masonry, inspection method, and coke oven masonry method

Abstract

[Means for solution] An inspection device for a coke oven during furnace lining construction, which inspects the lining accuracy after refractory materials are laid during the furnace lining operation when renewing or newly installing a coke oven for producing coke. The inspection device includes: a photographing device that acquires an image of the work area where the furnace lining operation is being performed; a measurement area determination unit that determines the completed work area where the lining operation has been completed based on the image of the work area acquired by the photographing device, and determines the determined completed work area as the measurement area; and a refractory material position measuring device that measures the laying position of the refractory materials within the measurement area determined by the measurement area determination unit to inspect the lining accuracy.

Description

Technical Field

[0001] The present invention relates to an inspection device and inspection method during coke oven masonry, and a coke oven masonry method using the same. Background Art

[0002] Metallurgical coke for steelmaking is manufactured by carbonizing coal in a chamber coke oven. The chamber coke oven is configured by alternately arranging carbonization chambers and combustion chambers that supply heat to the carbonization chambers in the furnace width direction, and heat is supplied from the combustion chambers to the carbonization chambers via refractory materials such as refractory bricks that separate the carbonization chambers from the combustion chambers. There are also coke oven bodies with 100 or more furnace holes, which can be said to be huge brick structures with a total length of 100 m or more and a height of 10 m or more.

[0003] The refractory materials that make up the coke oven are gradually damaged due to high temperatures exceeding 1000°C and the friction experienced when horizontally pulling out and removing the coke obtained by carbonizing coal. Therefore, the coke oven is used while performing simple repairs based on methods such as thermal spraying and re-laying repairs mainly for the kiln mouth. Generally, it reaches the end of its life in 40 to 50 years, and the aged coke oven needs to be updated or newly installed.

[0004] The construction (masonry) of a coke oven is usually carried out by bricklayers manually laying shaped refractory materials such as bricks. The specific operation process is as described below.

[0005] The coke oven has a complex structure, designed such that the connecting surfaces of the upper and lower shaped refractory materials are horizontal and aligned at the same height throughout the whole. There are a first layer and a second layer counted from the bottom. In the new installation of a coke oven or the renewal project of the shaped refractory material structure, a total of several hundred bricklayers are arranged in groups of dozens in each certain range, and starting from the bottom of the furnace, 1 or 2 layers of shaped refractory materials are successively laid on average each day.

[0006] On the other hand, compared with the case where bricklayers manually lay shaped refractory materials such as bricks at the coke oven masonry site as described above, as a technique with high workability and efficiency, there has also been proposed a method of stacking multiple shaped refractory materials at a place other than the coke oven masonry site to manufacture a block, and transporting and installing the block at the coke oven masonry site (for example, Patent Document 1).

[0007] In any construction method, it is required to stack the shaped refractory materials while maintaining high precision.

[0008] At the coking furnace bricklaying site, when laying regular refractory materials such as bricks while maintaining high precision, the following method can be adopted. First, use a crane or the like to lift the used regular refractory materials to the working height in advance and place them near the position to be constructed. In addition, after the mortar is prepared in a mixer, it is loaded into a container, transported to the working area by a crane or the like, subdivided and placed near the construction position. The bricklayer applies mortar (referred to as "mukaetro" in Japanese) at the position where the regular refractory material is to be laid with a trowel to form a specified joint thickness, and then takes the regular refractory material placed nearby and lays the regular refractory material on the mortar without entrapping air. After the bricklayer adjusts the position of the laid regular refractory material using a level or the like, he moves laterally to the position for laying the next regular refractory material. By repeating the above steps, one layer of regular refractory materials is laid. When the laying operation of one layer of regular refractory materials is completed, an inspection operation (shape measurement) is carried out to confirm whether the required precision is achieved. If a problem is found, this part is rebuilt and then the laying operation of the next layer is started.

[0009] The inspection operation for confirming the required precision is carried out as follows: A line is pulled straight and the distance from the line is visually judged, or a straight rod about 1 m long is pushed against the row of laid regular refractory materials and the presence or absence of unevenness is visually inspected. If the gap is 2 mm or more, the operator makes fine adjustments by tapping this part with a hammer or the like. If it still cannot be corrected even in this case, the brick is peeled off and rebuilt again. At this time, the inspection operation is carried out by the operator for each furnace hole at the end of the laying operation for each layer in the furnace height direction, and it is necessary to carry out the inspection at intervals of 1 mm over the entire length. And the inspection results are recorded in an inspection table.

[0010] Prior Art Documents

[0011] Patent Documents

[0012] Patent Document 1: Japanese Patent Publication No. 6008071 Summary of the Invention

[0013] Problems to be Solved by the Invention

[0014] The scope of the above-mentioned manual inspection operation is wide and very cumbersome. In addition, when carrying out the inspection operation at the coking furnace bricklaying site, it is necessary to carry out the inspection operation and the laying operation of all furnace holes simultaneously. Therefore, it becomes an operation in which multiple operators shuttle through it, and it is necessary to avoid interference with the operators of other processes, which is inefficient. That is, there are operators with various responsibilities at the bricklaying site. To carry out the inspection operation for confirming whether the required precision is achieved, it is necessary to seize the opportunity without interfering with other operations, so the operation is carried out by moving over a wide range, and inevitably becomes an inefficient operation.

[0015] In addition, as shown in Patent Document 1, when manufacturing a block by stacking a plurality of shaped refractory materials at a place other than the coking oven bricklaying site, the work at the bricklaying site can be carried out efficiently. In addition, since the inspection work for confirming the required accuracy can be carried out at a place different from the bricklaying site, it is efficient. However, since the inspection work is not carried out at the bricklaying site, there may be a case where it is difficult to meet the required accuracy.

[0016] Therefore, an object of the present invention is to provide an inspection device, an inspection method, and a coking oven bricklaying method for a coking oven that can automatically perform an inspection work after laying refractory materials without interference with other processes at the bricklaying site.

[0017] Means for Solving the Problem

[0018] In order to solve the above problems, the present invention provides the following (1) to (11).

[0019] (1) An inspection device for coking oven bricklaying, the inspection device inspects the laying accuracy after laying refractory materials in the bricklaying work when renewing or newly installing a coking oven for manufacturing coke, and the inspection device has:

[0020] An imaging device that acquires an image of the work area where the bricklaying work is carried out;

[0021] A measurement area determination unit that determines a work completion area where the bricklaying work has been completed based on the image of the work area acquired by the imaging device, and determines the determined work completion area as the measurement area; and

[0022] A refractory material positioning device that measures the laying position of the refractory materials in the measurement area determined by the measurement area determination unit to inspect the laying accuracy.

[0023] (2) The inspection device for coking oven bricklaying according to (1), wherein the measurement area determination unit determines the measurement area by determining the work completion area by performing moving line analysis on the image of the work area acquired by the imaging device.

[0024] (3) The inspection device for coking oven bricklaying according to the above (1) or (2), further having a moving mechanism that moves the refractory material positioning device above the work area.

[0025] (4) The inspection device for coking oven bricklaying according to (3), wherein the moving mechanism is a bridge crane.

[0026] (5) The inspection device during the construction of a coke oven as described in any one of (1) to (4), wherein the refractory material positioning device is a 3D scanner.

[0027] (6) The inspection device during the construction of a coke oven as described in any one of (1) to (5), wherein the refractory material positioning device measures the distances to the upper surface and / or side surface of the refractory material after construction at multiple points to position the construction position of the refractory material.

[0028] (7) An inspection method during the construction of a coke oven, the inspection method inspects the construction accuracy after the refractory material is constructed during the construction operation when the coke oven for producing coke is updated or newly installed. The inspection method includes:

[0029] A process of obtaining an image of the operation area where the construction operation is performed;

[0030] Based on the image of the operation area, determining the operation completion area where the construction operation has been completed, and determining the determined operation completion area as the measurement area; and

[0031] A process of measuring the construction position of the refractory material in the determined measurement area to inspect the construction accuracy.

[0032] (8) The inspection method during the construction of a coke oven as described in (7), in the process of determining the measurement area, determining the operation completion area by performing a moving line analysis on the image of the operation area.

[0033] (9) The inspection method during the construction of a coke oven as described in (8),

[0034] The process of determining the measurement area includes:

[0035] A process of dividing the operation area into multiple small areas;

[0036] A process of extracting the moving line of the operator from the image of the operation area;

[0037] A process of determining whether the small area is an area during the construction operation or the operation completion area according to the extracted moving line of the operator; and

[0038] A process of determining the operation completion area as the measurement area.

[0039] (10) The inspection method during the construction of a coke oven as described in (9), further including:

[0040] A process of setting the measurement area where the inspection of the construction accuracy has been completed as the inspection completion area; and

[0041] A process of determining whether all of the small sections within the operation section are inspection-completed sections.

[0042] End the measurement when all of the small sections become inspection-completed sections.

[0043] (11) The inspection method during coke oven masonry described in any one of (7) to (10). The inspection of the masonry accuracy is carried out using a refractory material positioning device that measures the masonry position of the refractory material within the measurement area. After grasping the operation-completed section, move the refractory material positioning device to the operation-completed section to inspect the masonry accuracy.

[0044] (12) The inspection method during coke oven masonry described in any one of (7) to (11).

[0045] The inspection of the masonry accuracy includes:

[0046] A process of measuring the masonry position of the refractory material within the measurement area and obtaining measurement data; and

[0047] A process of determining the masonry accuracy by comparing the measurement data with the design value.

[0048] (13) The coke oven masonry method is a coke oven masonry method when renewing or newly installing a coke oven for manufacturing coke, and repeatedly performs

[0049] A process of laying refractory materials; and

[0050] A process of inspecting the accuracy after laying the refractory materials by the inspection method described in any one of (7) to (12) above.

[0051] Effects of the Invention

[0052] According to the present invention, based on the image of the operation section obtained by the photographing device, the measurement area of the refractory material positioning device is determined. Therefore, it is possible to automatically perform the inspection operation after laying the refractory materials at the coke oven masonry site without interference with other processes. Brief Description of the Drawings

[0053] Figure 1 A diagram showing a coke oven masonry device including an inspection device during coke oven masonry according to an embodiment of the present invention.

[0054] Figure 2 For explaining Figure 1 An example of the first step of the inspection method during coke oven masonry using the inspection device.

[0055] Figure 3This is a diagram for explaining the second step of an example of the inspection method during the coke oven lining construction using the inspection device Figure 1 This is a diagram for explaining the second step of an example of the inspection method during the coke oven lining construction using the inspection device

[0056] Figure 4 This is a diagram for explaining the third step of an example of the inspection method during the coke oven lining construction using the inspection device Figure 1 This is a diagram for explaining the third step of an example of the inspection method during the coke oven lining construction using the inspection device

[0057] Figure 5 This is a diagram for explaining the fourth step of an example of the inspection method during the coke oven lining construction using the inspection device Figure 1 This is a diagram for explaining the fourth step of an example of the inspection method during the coke oven lining construction using the inspection device

[0058] Figure 6 This is a diagram for explaining the process of the movement route analysis in the second step

[0059] Figure 7 This is a flowchart showing the process of the masonry accuracy inspection in the fourth step and the process of the movement route analysis in the second step together Detailed implementation mode

[0060] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0061] Figure 1 This is a diagram showing a coke oven lining construction equipment including an inspection device for coke oven lining construction according to an embodiment of the present invention.

[0062] The coke oven lining construction equipment has a lining construction workshop 1, and inside the lining construction workshop 1, there are a photographing device 2 and a refractory material position measuring device 3 that constitute the inspection device 10. The photographing device 2 is provided on the wall of the lining construction workshop 1.

[0063] A crane 4 is provided inside the lining construction workshop 1, and the refractory material position measuring device 3 is installed on the crane 4. The crane 4 is a bridge crane and can move in the horizontal direction along the guide rail 11, functioning as a moving mechanism for the refractory material position measuring device 3.

[0064] Below the refractory material position measuring device 3 inside the lining construction workshop 1 becomes an operation area 6. In the operation area 6, an operator 7 stacks refractory materials 5 to carry out the lining construction of the coke oven.

[0065] The main part of the coke oven has the following structure: The refractory materials 5 are arranged in the furnace length direction and stacked in the height direction to form one furnace hole, and a plurality of such furnace holes are arranged at a specified interval in the furnace width direction. The refractory material 5 can be a shaped refractory material such as bricks or an unshaped refractory material.

[0066] When building a coke oven, the operator 7 builds the refractory material 5 in a horizontal direction. After the laying operation of one layer of the refractory material 5 is completed, a masonry accuracy inspection is carried out. If a problem is found during the inspection, this part is rebuilt, and then the laying operation of the next layer is entered. This is repeated until the building of the coke oven is completed.

[0067] The photographing device 2 is used to obtain an image of the work area where the oven building operation is in progress. As the photographing device 2, preferably, it can photograph the information of the entire work area 6 with high precision. For example, a 4K camera can be appropriately used. As the photographing device 2, as long as it can obtain image information with a resolution sufficient for movement line analysis, it can also be other devices such as an infrared laser sensor or a 3D stereo camera.

[0068] An image control unit 8 for performing image processing, etc. is connected to the photographing device 2. The image control unit 8 functions as a measurement area determination unit that automatically determines the measurement area during the masonry accuracy inspection, for example, performing movement line analysis. The image control unit 8 can also be built into the photographing device 2.

[0069] The refractory material position measuring device 3 measures the distances to the upper surface and / or side surface of the refractory material 5 after laying at multiple points, and has a control unit for judging the masonry accuracy of the refractory material based on the measurement results.

[0070] The measurement (position measurement) of the refractory material using the refractory material position measuring device 3 is carried out from a place about 10 to 100 m away. Therefore, as the refractory material position measuring device 3, a 3D scanner, a stereo camera, a TOF camera, etc. are preferred. Among these, a 3D scanner is preferred. A 3D scanner is a three-dimensional shape measurement device (sensor) that measures the distance to each point, and lasers, electromagnetic wave radars, ultrasonic waves, etc. can be used. Among these, it is preferred to use a laser that can set the measurement area as a wide area and has high point-to-point resolution and distance resolution.

[0071] During the measurement (position measurement), even if the distance to the measurement (position measurement) point is far away, it is preferred to adjust so that the distance between points is 20 mm or less. When using a 3D scanner as the refractory material position measuring device 3, in order to adjust the distance between points, in addition to adjusting the settings (sampling speed, swing speed, laser intensity) of the 3D scanner itself, methods such as reducing the height of the 3D scanner (distance and area to the measurement point) can be cited. For this purpose, for example, a mechanism that can lower the 3D scanner about 10 m downward from the crane 4 can be provided to cope with it.

[0072] It should be noted that by installing the refractory material positioning device 3 such as a 3D scanner on a moving mechanism such as a crane as described above, the refractory material positioning device 3 can be moved directly above the masonry accuracy inspection area. However, it can also be fixed above the operation area.

[0073] Next, an example of the inspection method during the construction of a coke oven will be described.

[0074] First, as Figure 2 shown, when the operator 7 performs the masonry operation sequentially from one end, the imaging device 2 acquires an image of the operation area 6 (the first step).

[0075] Next, as Figure 3 shown, the image control unit 8 performs moving line analysis on the acquired image to grasp the completed operation area where the masonry operation has been completed (the second step). In this way, the image control unit 8 uses the grasped completed operation area as the measurement area for the masonry accuracy. The details of the moving line analysis will be described later. It should be noted that Figure 3 the reference numeral 12 in the figure is the moving line of the moving body.

[0076] Next, as Figure 4 shown, based on the result of the moving line analysis, the refractory material positioning device 3 is automatically moved to the measurement area by the crane 4 (the third step).

[0077] Next, as Figure 5 shown, in the measurement area, the refractory material positioning device 3 inspects the masonry accuracy (the fourth step).

[0078] The acquisition of the image of the operation area 6 using the imaging device 2 in the first step is for determining the measurement area of the refractory material positioning device 3. The actual determination of the measurement area is performed by the image control unit 8 through moving line analysis of the acquired image. In the case of performing moving line analysis on the masonry operation of the coke oven combustion chamber, since the time required for laying one furnace hole is about 30 minutes to 1 hour, the image acquisition time of the imaging device 2 is in the range of about 1 to 20 minutes, and preferably can be adjusted in the range of about 5 to 10 minutes.

[0079] The moving line analysis in the second step is performed according to the Figure 6 procedure shown.

[0080] First, as Figure 6 shown in (a) of the figure, the operation area 6 is divided into a plurality of small areas 21 (process 1). The division of the small areas 21 is arbitrary and is set to a size that is easy to analyze.

[0081] Next, as Figure 6As shown in (b) of , the image control unit 8 extracts the movement lines 22a to 22d of the moving body from the images of the work area 6 obtained by the imaging device 2 at regular intervals (step 2).

[0082] Next, as Figure 6 shown in (c) of , the image control unit 8 determines the movement lines 23a and 23b of the worker (bricklayer) 7 during the bricklaying operation from the movement lines 22a to 22d of the moving body based on the movement pattern of the moving body or a marker installed on a helmet or the like worn by the worker 7. It should be noted that in the above steps 2 and 3, the case of determining the movement line of the worker from the movement lines of the moving body is exemplified, and it may also be set to directly extract the movement line of the worker based on a positioning device such as a GPS held by the worker.

[0083] Next, as Figure 6 shown in (d) of , the image control unit 8 determines whether the length of the movement line of the worker 7 included in the small section is equal to or greater than the threshold value, and sets the small section in which the movement line of the worker 7 during the operation continues for a threshold value or more as the operation in-section 24 (step 4).

[0084] Next, as Figure 6 shown in (e) of , the image control unit 8 repeatedly performs steps 2 to 4, and sets the small section in which the movement line of the worker 7 during the bricklaying operation changes from a state equal to or greater than the threshold value to a state lower than the threshold value as the operation completed section 25 (step 5).

[0085] Next, while concurrently performing the bricklaying accuracy inspection step described later, as Figure 6 shown in (f) of , the image control unit 8 sets the small section (operation completed section) in which the information indicating the completion of the bricklaying accuracy determination is received from the control unit of the refractory material positioning device 3 among the multiple operation completed sections 25 as the inspection completed section 26, and determines whether all the small sections have become the inspection completed section 26 (step 6). Next, if all the small sections have become the inspection completed section 26, the analysis ends.

[0086] The bricklaying accuracy inspection in the fourth step is performed according to the Figure 7 process shown in the flowchart. Figure 7 In , the Figure 6 process of movement line analysis is also described.

[0087] The control unit of the refractory material positioning device 3 receives information on small sections that are the work completion sections from the image control unit 8 connected to the imaging device 2, determines the order for measuring the masonry accuracy for multiple work completion sections, and sequentially sets the work completion sections as the measurement areas in the determined order for determination (step 11). The method for determining the order can be either the order of the work completion sections or the order that minimizes the movement path of the crane 4.

[0088] Next, the refractory material positioning device 3 measures (positions) the masonry position of the refractory material within the work completion section determined as the measurement area, and acquires measurement data (3D data) (step 12). Then, the control unit of the refractory material positioning device 3 determines the masonry accuracy by comparing the measurement data with the design value (step 13). The small section (work completion section) after the masonry accuracy determination becomes the inspection completion section and is marked (step 14). Information on the small sections for which the masonry accuracy determination has been completed is sent to the image control unit 8 connected to the imaging device 2.

[0089] Steps 11 to 14 are repeatedly implemented to determine whether all small sections have become inspection completion sections (step 15). Next, if all small sections have become inspection completion sections, the measurement performed by the refractory material positioning device (3D scanner) 3 ends.

[0090] The refractory material is measured (positioned) by the refractory material positioning device (3D scanner) 3 for multiple sections respectively, and the past measurement data and the most recent measurement data are synthesized. The synthesis is performed by setting reference points (marks) on the structures fixed within the furnace building work section and incorporating the positions of the reference points. More than 3 points are set as the reference points for incorporation.

[0091] According to this embodiment, since the masonry accuracy of the refractory material is remotely measured by the refractory material positioning device 3, the masonry accuracy measurement operation does not interfere with the operations of other processes, and the masonry accuracy inspection can be performed efficiently and with high precision at the furnace building site. Therefore, the efficiency of the furnace building operation can be achieved. In addition, the imaging device 2 is used to acquire the image of the work section 6, and based on this image, for example, the movement line analysis is performed by the image control unit 8 to automatically determine the progress status of the furnace building operation and automatically measure the end part of the masonry operation. Therefore, the masonry accuracy inspection part (measurement area) of the refractory material positioning device 3 can be automatically determined.

[0092] As a technology for measuring and inspecting large structures without relying on manual labor, although it is in a different field from the present invention, the following are known: a technology for measuring the dimensions of an object by a distance measuring device mounted on a mobile robot as disclosed in Japanese Patent Laid-Open No. 10-227639; a technology for measuring the dimensions of an object from a separated location using a portable near-infrared light wave distance measuring device as disclosed in Japanese Patent Laid-Open No. 5-120413.

[0093] However, in the technology disclosed in Japanese Patent Laid-Open No. 10-227639, since the mobile robot performs measurements within the work area, it is necessary to seize the opportunity without interference from other processes for measurement, inevitably resulting in inefficient operation. In addition, in the technology such as Japanese Patent Laid-Open No. 5-120413, there is no interference with other processes, but each time measurement is performed, the operation of setting the distance measuring device at various places occurs, requiring additional operators.

[0094] In contrast, in the present embodiment, since the refractory material positioning device 3 can perform measurements remotely, there is no interference with other processes. In addition, since measurement can be automatically performed, there is no need to increase the number of operators.

[0095] As described above, the embodiments of the present invention have been described. These are merely examples and are not restrictive. Omissions, substitutions, and changes can be made in various forms without departing from the gist of the present invention.

[0096] For example, in the above embodiment, an example of using a three-dimensional shape measuring device such as a 3D scanner as the refractory material positioning device is shown, but it is not limited thereto. Other distance measuring devices such as a two-dimensional laser displacement meter can be used. In addition, an example of using a crane installed in the factory building as the moving device 4 of the refractory material positioning device is shown, but it is not limited to the crane. Any means capable of performing horizontal movement in the furnace building can be applied, and for example, a parallel wire method used in indoor and outdoor stadiums, gymnasiums, etc. can be used. In addition, in the above embodiment, an example of the case where the refractory material positioning device 3 has a control unit for determining the laying accuracy of the refractory material and the like is shown, but a determination device including a computer for determining the laying accuracy of the refractory material can also be provided separately. Or, the image control unit 8 can also be a computer or the like that also determines the laying accuracy of the refractory material.

[0097] Example 1

[0098] Here, a 4K camera is used as the imaging device, and a laser type 3D scanner (3D laser scanner) is used as the refractory material positioning device, as Figure 1As shown in the figure, a 4K camera is installed on the wall of the plant, and a 3D laser scanner is installed on the bridge crane. The 4K camera takes pictures of the area where the unshaped refractory material is being laid as the refractory lining operation area. The image control unit analyzes the moving line and determines whether there are workers every 5 minutes based on the images in the past 5 minutes. If there are workers, it determines whether the worker is a bricklayer performing the lining operation, a handler carrying the refractory material, or a joint worker performing joint repair, cleaning, etc. based on characteristics such as the moving speed and the movement of the arms. The period during which the bricklayer occupies more than 3 minutes within 5 minutes is set as the operation period. Regarding the operation completion period when the bricklayer disappears later, the operator moves the bridge crane with the 3D laser scanner to a position offset by 3 to 5 furnace holes from directly above this area and performs measurement. Since only one side of the unshaped refractory material can be measured in one measurement, it is moved to the opposite side, offset by 3 to 5 furnace holes from directly above, and measured again. The height from the unshaped refractory material to the bridge crane is approximately 15m.

[0099] Regarding the point cloud information measured in two times like this, the data is synthesized in such a way that the reference points of 3 points overlap. There is a measurement error of about 1mm in the point cloud data, and it is impossible to make the 3 reference points completely overlap. Therefore, the synthesis is performed by the least squares method in such a way that the misalignment amount between the reference points becomes the minimum.

[0100] For the measurement points of the synthesized data, the points measured on the surface at the intended measurement and laying position of the refractory material are extracted, the distance between the CAD data as the design value and the brick surface is measured, and the average value is obtained, thereby measuring the laying position of the refractory material. The measurement is performed at three locations, namely, at both ends (north end, south end) and in the middle, for the unshaped refractory materials (A to 3) for 5 furnace hole quantities, and the deviation amount from the design value is evaluated. The results are shown in Table 1. In addition, for comparison, the values obtained by the measurer manually measuring the same part are shown in Table 2.

[0101] As shown in Table 1, when the measurement is performed according to the present invention, the deviation amount from the design value is -1.3 to 1.4mm. In addition, as shown in Table 2, in the case of manual measurement, the deviation amount from the design value is -2.0 to 0.5mm. In addition, the maximum difference between the example of the present invention and the manual measurement result is 1.6mm. From the above results, it can be confirmed that according to the present invention, the distance to the refractory material can be measured with relatively high accuracy, and it becomes possible to check the laying accuracy.

[0102] Table 1

[0103]

[0104] Table 2

[0105]

[0106] Description of Reference Numerals

[0107] 1 Furnace building

[0108] 2 Photographing device

[0109] 3 Refractory material positioning device

[0110] 4 Moving mechanism (crane)

[0111] 5 Refractory material

[0112] 6 Working area

[0113] 7 Operator

[0114] 8 Image control unit (measurement area determination unit)

[0115] 10 Inspection device

[0116] 11 Guide rail

[0117] 12, 22a - 22d Moving lines

[0118] 21 Small area

[0119] 23a, 23b Moving lines of furnace bricklayers

[0120] 24 In - operation area

[0121] 25 Completed - operation area

[0122] 26 Completed - inspection area

Claims

1. Inspection device for coke oven lining construction. The inspection device automatically inspects the lining accuracy after laying refractory materials during the lining construction operation when renovating or newly installing a coke oven for producing coke. The inspection device has: A photographing device that acquires an image of the work area where the lining construction operation is being carried out; A measurement area determination unit that, based on the image of the work area acquired by the photographing device, determines the work completed area where the lining construction operation has been completed, and determines the determined work completed area as the measurement area; and A refractory material position measurement device that measures the laying position of the refractory materials within the measurement area determined by the measurement area determination unit to inspect the lining accuracy, The measurement area determination unit divides the work area into multiple small areas by performing movement line analysis on the image of the work area acquired by the photographing device, extracts the movement line of the worker from the image of the work area, and determines whether the small area is an area during the lining construction operation or the work completed area based on the extracted movement line of the worker, thereby determining the work completed area as the measurement area.

2. The inspection device for coke oven lining construction according to claim 1, further having a moving mechanism that moves the refractory material position measurement device above the work area.

3. The inspection device for coke oven lining construction according to claim 2, wherein the moving mechanism is a bridge crane.

4. The inspection device for coke oven lining construction according to any one of claims 1 to 3, wherein the refractory material position measurement device is a 3D scanner.

5. The inspection device for coke oven lining construction according to any one of claims 1 to 3, wherein the refractory material position measurement device measures the distance to the upper surface and / or side surface of the refractory material after laying at multiple points to measure the laying position of the refractory material.

6. The inspection device for coke oven lining construction according to claim 4, wherein the refractory material position measurement device measures the distance to the upper surface and / or side surface of the refractory material after laying at multiple points to measure the laying position of the refractory material.

7. Inspection method for coke oven lining construction. The inspection method automatically inspects the lining accuracy after laying refractory materials during the lining construction operation when renovating or newly installing a coke oven for producing coke. The inspection method includes: A process of acquiring an image of the work area where the lining construction operation is being carried out; A process of determining the work completed area where the lining construction operation has been completed based on the image of the work area, and determining the determined work completed area as the measurement area; and A process of measuring the laying position of the refractory materials within the determined measurement area to inspect the lining accuracy, In the process of determining the measurement area, the work completed area is determined by performing movement line analysis on the image of the work area, The process of determining the measurement area includes: A process of dividing the work area into multiple small areas; A process of extracting the movement line of the worker from the image of the work area; A process of determining whether the small section is a section under masonry work or a completed work section according to the movement route of the operator extracted; and A process of determining the completed work section as the measurement area.

8. The inspection method during coke oven masonry according to claim 7, further comprising: A process of setting the measurement area where the inspection of the masonry accuracy has been completed as the inspection completed section; and A process of determining whether all the small sections within the work section are the inspection completed sections, and ending the measurement when all the small sections become the inspection completed sections.

9. The inspection method during coke oven masonry according to claim 7 or 8, wherein the inspection of the masonry accuracy is performed using a refractory position measuring device that measures the masonry position of the refractory material within the measurement area. After determining the completed work section, the refractory position measuring device is moved to the completed work section to inspect the masonry accuracy.

10. The inspection method during coke oven masonry according to claim 7 or 8, the inspection of the masonry accuracy comprising: A process of measuring the masonry position of the refractory material within the measurement area and obtaining measurement data; and A process of determining the masonry accuracy by comparing the measurement data with the design value.

11. The inspection method during coke oven masonry according to claim 9, the inspection of the masonry accuracy comprising: A process of measuring the masonry position of the refractory material within the measurement area and obtaining measurement data; and A process of determining the masonry accuracy by comparing the measurement data with the design value.

12. A coke oven masonry method, which is a coke oven masonry method when renewing or newly installing a coke oven for producing coke, wherein, the following processes are repeated: A process of laying refractory materials; and A process of inspecting the accuracy after laying the refractory materials by the inspection method according to any one of claims 7 to 11 above.

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