JP2889101B2 - Repair method and apparatus for coke oven wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for repairing a damaged part of a furnace wall which separates a carbonization chamber and a combustion chamber of a coke oven.

[0002]

2. Description of the Related Art In a coke oven furnace, a heat storage chamber is provided at a lower portion of a furnace body, and a carbonization chamber and a combustion chamber are alternately arranged at an upper portion thereof. Fuel gas and air (in the case of rich gas, only air) are preheated in the heat storage chamber, heat is recovered in the adjacent heat storage chamber after combustion, and then discharged through the flue. The coal charged into the coking chamber is carbonized by indirect heating through the furnace walls from both combustion chambers to coke. Most of the room-type coke ovens are made of silica bricks and clay bricks, and some of them are insulated bricks and red bricks.

[0003] However, in a room-type coke oven, various parts are damaged due to the effects of mechanical external force, thermal stress, charged coal moisture, and the like while being used for many years. In particular, since the action based on the above-described factors is concentrated on the carbonization chamber wall, damages such as breakage of joints, generation of cracks, and missing bricks are likely to occur.
When such damage occurs, inflow of the generated coke oven gas from the carbonization chamber to the combustion chamber causes incomplete combustion, causing pollution problems due to black smoke and a decrease in productivity due to a local decrease in combustion chamber temperature, Problems such as clogging due to an increase in the amount of pyrolytic carbon deposited on the furnace wall are caused. For this reason, mortar is sprayed on the damaged portion with low durability, and when the damage is large, bricks that require high repair costs have been replaced.

[0004] Conventionally, the life of a chamber coke oven is 20 to
It has been said that it will last about 25 years, but recently it is expected that it will last for 30 to 35 years by adopting a method of repairing damaged parts of the furnace wall by spraying and improving the accuracy of diagnosis of damaged parts of the furnace wall. Is coming. On the other hand, replacing a coke oven requires an investment of at least several tens of billions of yen in a coke oven, which will greatly squeeze the business environment of the company and increase the life of coke ovens in Japan by 35%.
In many years, there are many furnaces that need to be replaced around the year 2000, and there is a problem that it is not possible to cope with silica bricks and furnaces. For this reason, in the coke industry, the life of a room-type coke oven is set to 40 to 45.
There is a strong need for a versatile and effective repair technology that can extend the life of the car even more years.

Conventionally, as a method of inspecting a furnace wall of a coke oven or a method of repairing the same, for example, a lance having an optical system including an optical fiber at a tip end is inserted into a coke oven carbonization chamber or a combustion chamber to absolutely cover the wall. A method of scanning a wall surface in association with a position, observing each position of the wall surface of the carbonization chamber or combustion chamber to detect a damaged portion, and storing observation data of the wall surface together with the absolute position of the wall surface in a computer No. 58-206681), a heat-resistant protective tube provided with an optical fiber or a television camera is inserted into a carbonization chamber or a combustion chamber to detect a damaged portion of the wall of the carbonization chamber or the combustion chamber outside the furnace, and the inside of the protection tube is detected. A method of spraying a repair material to a damaged wall portion from a repair material spray nozzle to be disposed (Japanese Patent Publication No. 5-17277), And a method of repairing a damaged portion of the furnace wall by using an observation device, measuring a distance between the damaged portion of the furnace wall and the spray gun, and controlling the distance to be a predetermined optimum distance (Japanese Patent Application Laid-Open No. 60-17689) and the like.

[0006] Furnace wall repair devices include flammable gas,
A spraying burner is detachably provided at one end of a water-cooled long cylinder in which supply pipes for oxygen and refractory powder are inserted, and an operation handle is fitted at the other end, and the water-cooled long cylinder can be rolled on a support frame. (Japanese Utility Model Laid-Open Publication No. 52-36703), a spray gun for spraying an amorphous refractory into a cooling case on a damaged portion of a furnace wall, and a furnace wall damaged. A television camera for projecting a part, a furnace interior-containing head part in which a range finder for measuring the distance between the damaged part of the furnace wall and the spray gun is also provided, and an observation device capable of observing an image obtained by the television camera outside the furnace. And a device provided with a moving mechanism for moving the furnace interior head in three axial directions based on the measured value of a distance meter (Japanese Patent Application Laid-Open No. 60-176).
No. 89), a device for spraying, such as a thermal spraying burner and a surveillance camera, is provided in a water-cooled box, and is detachably provided at the end of the boom (Japanese Patent Laid-Open No. 2-99592). A long beam to which a water-cooled box equipped with a thermal spray burner is detachably attached is attached to a bogie that has wheels that run on rails on a middle work floor and that allows the support frame of the long beam to rotate and move up and down freely. (Japanese Patent Application Laid-Open No. 2-99589), a guide rail capable of tilting on a vertically movable and turnable base provided on a traveling vehicle. And a lance holder that moves along the guide rail, and a spraying lance that is attached to the lance holder so as to be able to be extended out of the lance holder. Device provided La (JP 4-326
Numerous proposals have been made.

[0007]

SUMMARY OF THE INVENTION The above-mentioned JP-A-58-20
The inspection method and the repairing method disclosed in Japanese Patent Publication No. 6681 and Japanese Patent Publication No. 5-17277 only visually grasp the state of wear of the furnace wall and do not quantitatively grasp the amount of wear, for example, the amount of depression. The area to be repaired and the amount of repair material sprayed must depend on human sensation, and if all the data observed by the optical system is to be stored in the computer, the capacity of the computer will be extremely large. Since the work is carried out before the inside of the furnace is completely cooled, the above optical system is almost useless due to dust, fumes and high-temperature flames for repair material spraying during repair of the furnace wall. That you have to rely on,
A lance device used for a method of inspecting and repairing a wall surface in a coke oven is formed by a cylindrical body having a circular cross section, so that it is difficult to rotationally drive the lance device. That is, when the first-stage lance is to be rotated around an axis, a slip occurs on the contact surface with the second-stage lance, and the rotation of the first-stage lance is not transmitted to the second-stage lance. Has the disadvantage of Further, the method disclosed in Japanese Patent Application Laid-Open No. 60-17689 is to reduce the rebound loss and improve the adhesion efficiency of the sprayed material by optimizing the distance between the spray gun and the damaged portion of the furnace wall. Therefore, it is impossible to perform optimal repair according to the depth of the damaged part of the furnace wall.

Further, in the apparatus disclosed in Japanese Utility Model Laid-Open Publication No. 52-36703, an operator operates an operation handle while visually observing a damaged portion of a furnace wall, and a spraying burner provided at one end of a water-cooled long cylindrical body. The damaged area needs to be repaired, and the area to be repaired and the amount of the repair material sprayed must depend on human perception. The apparatus disclosed in Japanese Patent Application Laid-Open No. 60-17689 can keep the distance between the damaged part of the furnace wall and the spray gun constant, but does not disclose that the repair is performed according to the damage condition of the damaged part of the furnace wall. It has not been. Further, Japanese Patent Laid-Open No.
-99592, the apparatus disclosed in Japanese Patent Application Laid-Open No. 2-99589 requires an operator to operate a boom with a built-in spraying burner while an operator monitors the image of the monitoring camera.
The area to be repaired and the amount of repair material sprayed must depend on human perception. Furthermore, Japanese Patent Application Laid-Open No. 4-32690
In the method disclosed in Japanese Patent Application Laid-Open No. 2-99589, it is necessary for the operator to operate the thermal spray lance while monitoring the image of the surveillance camera. You have to depend on your senses. Also,
The lance device disclosed in Japanese Patent Publication No. 5-17277 only visually grasps the state of wear of the furnace wall, and does not quantitatively grasp the amount of wear, for example, the amount of depression. The amount of repair material sprayed must depend on human perception.

An object of the present invention is to eliminate the problems of a conventional method for inspecting and repairing a wall in a coke oven and a device therefor,
It is an object of the present invention to provide a method and an apparatus for repairing a coke oven wall surface, in which a wear state of a furnace wall is visually grasped, a wear amount is quantitatively grasped, and automatic repair is enabled.

[0010]

Means for Solving the Problems The present inventors have conducted various tests and studies to achieve the above object. As a result, have a spray nozzle of <br/> repair material to the tip, X-axis, movably in the Z axis direction
Multi-stage stretching that can rotate around the X, Y, and Z axes
With a television camera or a fiberscope provided the reduced lance tip to scan the furnace wall to identify the damaged portion, the distance between the multi-stage telescopic lance tip and the furnace wall surface is measured by the distance sensor provided in the multi-stage telescopic lance tip calculated wear amount data of furnace wall Te, the multistage extension from the driving amount of the lance driving system for driving said multistage telescopic lance
Find the position coordinates of the furnace wall damaged part with respect to the tip of the contraction lance,
Indicate and select the required repair range and predetermined repair pattern based on the position coordinates of the furnace wall damaged part and the wear amount data, and control the lance drive system to move the tip of the multi-stage telescopic lance and spray the repair material The present inventor has determined that the automatic repair can be performed by the repair, and has reached the present invention.

[0011] Namely the present invention is to have a spray nozzle of the repairing material to the tip, X-axis, movable in the Z axis direction, and X
A furnace wall is scanned by an imaging device provided at the tip of a multi-stage telescopic lance rotatable about the axis, the Y-axis, and the Z-axis and displayed on a monitor, and a distance provided at a tip of the multi-stage telescopic lance. the sensor obtains a wear amount data of the furnace wall by measuring the distance between the multi-stage telescopic lance tip and the furnace wall surface, the multi-stage telescopic lance tip from the driving amount of the lance driving mechanism for driving the multi-stage stretching <br/> lances The position coordinates of the worn portion of the furnace wall with respect to are obtained, and from these wall image information, the amount of wear data and the position coordinate data of the worn portion, the necessary repair range and repair pattern of the furnace wall are indicated and selected, and the furnace wall surface is selected. A method for repairing a coke oven wall, wherein a worn portion of the coke oven is repaired by spraying according to a predetermined repair pattern.

[0012] Further, a repair material spray nozzle is provided at the tip, and can be moved in the X-axis and Z-axis directions.
A multi-stage telescopic lance rotatable about an axis, and a lance drive mechanism for driving the multi-stage telescopic lance, an imaging device that scans the furnace wall at the tip of the multi-stage telescopic lance, and measures the distance between the lance tip and the furnace wall. And a monitor for displaying a wall image from the imaging device, and obtaining data on the amount of wear of the furnace wall by a signal from the distance sensor, and driving the lance drive mechanism. The position coordinates of the worn portion of the furnace wall with respect to the tip of the lance are obtained from the amount, and the required repair range and repair pattern of the furnace wall are determined from the wall image, the worn amount data and the position coordinate data of the worn portion, and are monitored. A signal processing control unit to be displayed, and a repair unit that operates a repaired part of the furnace wall according to a predetermined repair pattern based on a command from the signal processing control unit. Be composed of a scan operation unit is a repair device for coke oven oven wall, wherein.

[0013]

[Action] In the present invention, have a spray nozzle of the repairing material to the tip, X-axis, movable in the Z axis direction, and the X-axis,
By scanning the furnace wall with an imaging device provided at the tip of a multi-stage telescopic lance rotatable about the Y axis and the Z axis and displaying an image on a monitor, a damaged portion of the furnace wall can be identified at an early stage . Also, the distance sensor provided in multiple stages telescopic lance tip, calculated wear amount data of the furnace wall by measuring the distance between the multi-stage telescopic lance tip and the furnace wall surface, the multi-stage Shin
By obtaining the position coordinates of the furnace wall wear part relative to the multi-stage telescopic lance tip from the driving amount of the lance driving mechanism for driving the contraction lance, if defines the relationship between the repair necessity in advance wear amount, necessary repairs A range can be specified. If the relationship between the repair range, the amount of wear, and the repair pattern is determined in advance, the necessary repair range and repair pattern of the furnace wall can be determined. By operating the lance drive mechanism and performing the spray repair according to the determined repair range and repair pattern, the damaged furnace wall can be repaired automatically.

The repair device of the present invention has a multi-stage expansion and contraction which has a spray nozzle of a repair material at its tip, is movable in X-axis and Z-axis directions, and is rotatable about X-axis, Y-axis and Z-axis. By using a lance, the tip of the lance can be inserted above the center of the coke oven, and when shortened, the overall length of the lance becomes extremely compact. As a lance drive mechanism for driving the multi-stage telescopic lance, a servomotor or the like is used, and the movement of each lance is grasped by the lance drive mechanism, and the position and the moving speed are controlled. The imaging device provided at the tip of the multistage telescopic lance may be any device that can display a wall image such as a CCD camera or a fiberscope on a repair monitor, and is not particularly limited. The distance sensor for measuring the distance between the tip of the lance and the furnace wall surface is not particularly limited, as long as it can measure the distance between the lance and the furnace wall surface, such as a laser distance meter or an ultrasonic distance meter. The calculation of the position coordinates of the worn portion of the furnace wall with respect to the tip of the lance from the drive amount of the lance drive mechanism in the signal processing control unit is based on the embedded marker positions of the backstays on both sides (not shown). The lance tip position before extension at the time of being located at the center is X axis, Y
Axis, the reference point of the Z axis (0, 0, 0)
Starting from the reference points (0, 0, 0) of the axis, the Y axis, and the Z axis, the position coordinates of the worn portion of the furnace wall with respect to the lance tip are obtained from the driving amount of the lance driving mechanism.

In calculating the position coordinates of the worn portion of the furnace wall with respect to the tip of the lance, the multi-stage telescopic lance is
Since the long lance as long as 0 m is supported by the cantilever telescopic structure, a positional error due to deflection occurs in guiding the lance tip to the furnace wall repairing section. The correction of the position error due to the deflection of the lance tip is performed by inputting the X-axis movement amount x, the Y-axis movement amount y, and the rotation angle θ around the Z-axis, and outputting the lance tip deflection amount ε as an output. A network is used to estimate the amount of deflection ε at the tip of the lance from any of the X-axis direction movement amount x, the Y-axis direction movement amount y, and the rotation angle θ about the Z-axis, and using the estimated value, the lance drive mechanism This can be done by correcting the tip position. Further, a deflection amount acceleration εa, an X-axis lance moving speed Vx, an X-axis lance moving speed Vxa, a Y-axis lance moving speed Vy, and a Y-axis lance acceleration Vya, which are obtained from the bending amount ε that is the output of the multilayer neural network, are input. By using the second multilayer neural network that outputs the swing amplitude f of the lance tip, abnormal swing of the lance tip can be detected.

In the imaging device provided at the tip of the lance, repair is performed by a thermal spraying method of melting a thermal sprayed material by oxygen-flammable gas combustion or a thermal spraying method utilizing a thermite reaction of metal silicon and metal aluminum in oxygen. The light generated when the sprayed material is burned or melted at a high temperature causes the light source to be too strong to be seen by a normal CCD camera or fiberscope. However, when the exposure is stopped down, the whole becomes dark, and the damage state of the furnace wall to be repaired cannot be seen. Therefore, to observe both the pre-spray damage state and the high-brightness state during spraying, install multiple filters with a switching mechanism between the imaging device and the furnace wall, and observe the pre-spray damage state during observation and during the spraying. By switching the light blocking filter between the high brightness state and the high brightness state, both can be observed. In addition, if a bandpass filter with a switching mechanism is installed between the imaging device and the furnace wall, the light wavelength of the furnace wall can be selectively transmitted, the light wavelength of the flame being sprayed can be cut, and the high brightness during the spraying can be obtained. The state furnace wall can be observed.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing the overall configuration of a multi-stage telescopic lance device used in the method for repairing a wall surface in a coke oven according to the present invention, and FIG. 2 is a horizontal cross-sectional view showing an enlarged portion of a repair material spraying nozzle provided at a tip end portion. FIG. 3 is a block diagram showing a processing system centering on a signal processing / control unit. FIG. 4 is an image of a furnace wall in a limited range (for example, 1 m square). FIG. FIG. 6 shows an image of a wall, FIG. 6 shows observation data of a wear distribution figure of a damaged portion, and FIG. 7 shows an example of a damaged portion and a repair pattern.

1 and 2, reference numeral 1 denotes a lance truck, 2 denotes a mast provided on the lance truck 1 so as to be rotatable about a vertical direction (Y-axis direction) and vertically.
The lance is provided so as to be able to move up and down in the vertical direction, and is vertically moved up and down along the mast 2 by a driving device 4 including a wire or a chain and a hoist provided on the top of the mast 2. 5 is a horizontally extending lance support fixed to the lance lift 3 via a lance tilting gear 6;
Reference numeral 7 denotes a fixed outer cylinder having a quadrangular cross section attached via a slide plate 8 that slides in the extension direction of the lance support 5. The lance tilting gear 6 is configured to rotate clockwise or counterclockwise around the Z axis by a driving motor (not shown), whereby the fixed outer cylinder 7 tilts with respect to the Z axis. . Further, the fixed outer cylinder 7 has a first stage lance 9 formed of a tubular body having a square cross section fitted and supported on the inner surface thereof.

Reference numeral 10 denotes a rack fixed on the outer upper surface of the first stage lance 9 along the axial direction, and a pinion 11 provided on the fixed outer cylinder 7 is engaged with the rack. The pinion 11 is rotated clockwise or counterclockwise by a driving motor (not shown), thereby moving the first lance 9 back and forth along the axial direction of the fixed outer cylinder 7. Reference numeral 12 denotes a second-stage lance formed of a quadrangular cylindrical body fitted to the inner surface of the first-stage lance 9. A third-stage lance further formed of a cylindrical body having a rectangular cross-section is provided on the inner surface of the second-stage lance 12. 13 are fitted. 1
Reference numeral 4 denotes a repair material spraying nozzle provided at the tip of the third lance 13, and reference numeral 15 denotes a repair material spray nozzle 1 provided in the first to third lances 9, 12, and 13.
4 is a plurality of flexible hoses for supplying air, oxygen or repair material to 16, 16 is a flexible hose 15
The winding mechanism is configured to extend or wind according to expansion and contraction of the lance.

Reference numeral 17 denotes the first to third lances 9, 12,
A gear provided on the fixed outer cylinder 7 for rotating the motor 13 around its axis (X axis).
, The fixed outer cylinder 7 rotates around the X axis. Reference numeral 18 denotes a pair of bearing plates fixed to the slide plate 8, and the fixed outer cylinder 7 is disposed so as to pass through a circular hole 19 provided in the bearing plate 18. On the other hand, mast 2
Is mounted on the lance 1 via a turning mechanism 20, and is configured to be able to turn around the Y axis. In addition, 2
Reference numeral 1 denotes an operation room for operating a multi-stage telescopic lance installed on the lance 1.

The repair material spray nozzle 14 provided at the distal end of the third lance 13 is disposed in an opening 22 provided on the side of the distal end of the third lance 13. Reference numerals 23 and 24 denote openings adjacent to the opening 22 provided on the side of the distal end portion of the third stage lance 13. The opening 23 measures a CCD camera 25 and a radiation thermometer 26, and the opening 24 measures the distance to the furnace wall. A laser distance meter 27 is provided. 28 is a CCD camera 2
5 is provided with a plurality of filters for adjusting the amount of light source input to the CCD camera 25 and for shielding light, and the filters are switched according to the condition of the wall surface. By adjusting the exposure of 25 and selectively transmitting the light wavelength of the furnace wall by the band pass filter and cutting the light wavelength of the spray flame, the spraying condition can be observed. 3
0 is a power cable of the motor 29. Laser distance meter 2
Numeral 7 is for measuring the distance between the tip of the lance and the wall surface in order to quantitatively grasp the state of wear of the furnace wall as the amount of wear. That is, when a concave portion due to wear is present on the wall surface, the size and depth of the concave portion are determined by the laser distance meter 2.
7 can be detected.

A wall image taken by the CCD camera 25,
The wall temperature measured by the radiation thermometer 26 and the measurement data of the laser distance meter 27 are transmitted from the first to third lances 9, 12, and 13 by the transmission lines 31 and 32 and the transmission line 33.
After passing through the inside of the fixed outer cylinder 7, it is taken out to the outside by the winding mechanism 16 and guided to the operation room 21. Air, oxygen, or a repair material is supplied to the repair material spray nozzle 14 via a flexible hose 15, and the flexible hose 15 is supplied from the first stage to the third stage lances 9, 1 and 2.
2 and 13 and the inside of the fixed outer cylinder 7 and the winding mechanism 1
6 and is taken out to the outside and connected to the repair material supply mechanism. The operation room 21 includes a repair monitor 34 for repairing the wall surface,
A signal processing control unit 35 (implemented by a computer) for graphic processing of the amount of wear, a graphic panel for displaying the graphic, other instrumentation, and an operation panel are housed. A wide-range camera 36 for checking the condition of the furnace wall surface during the repair work is provided on the fixed outer cylinder 7, and the captured image is displayed on a wide-range monitor 37 in the operation room 21. The wide-range camera 36 can be installed at an arbitrary position such as the tip of the second lance 12 if heat resistance is taken.

Each drive unit in the multistage telescopic lance device is a lance drive system 3 using a servomotor or the like.
The lance drive system controls the individual movements (movement amount in the X-axis direction, movement amount in the Y-axis direction, movement amount in the Z-axis direction, rotation angle R _X , turning angle R _Y , tilt angle R _Z ) of each drive unit. The position and speed are controlled while grasping at 38, and the information is output to the signal processing control unit 35 in the operation room 21. The signal processing control unit 35 receives the X-axis direction movement amount x, the Y-axis direction movement amount y, and the rotation angle θ about the Z-axis as input, and outputs the deflection amount ε at the tip of the lance as an output by a multilayer neural network. The amount of deflection ε at the lance tip is estimated from the X-axis direction movement amount x, the Y-axis direction movement amount y, and the rotation angle θ about the Z-axis, and the lance driving system 37 is used to correct the lance tip position using the estimated value. . The signal processing control unit 35 is connected to a repair monitor 34 for displaying a wall image from the CCD camera 25 and a wide-range monitor 37 for displaying an image from a wide-range camera 36. The signal processing control unit 35 obtains the wear amount data of the furnace wall based on the signal from the laser range finder 27, and detects the wear part of the furnace wall with respect to the lance tip from the detection signal of the laser range finder 27 and the drive amount in the lance drive system 38. The position coordinates are obtained, and image processing using the wall surface image information, the amount of wear data, and the position coordinate data of the worn part on the repair monitor 34 is used to classify each part of the furnace wall according to the degree of wear and to obtain a wear distribution figure for repair. The image is displayed on the monitor 34 or another graphic panel. Reference numeral 39 denotes an operation unit. The operator observes the wear distribution pattern on the repair monitor 34, and determines a necessary repair range of the furnace wall,
This is for indicating a repair pattern.

With the above configuration, when repairing a damaged portion of the coke oven furnace wall, first, the operator operates the operation unit 39 in the operation room 21 to operate the lance truck 1.
Is moved in front of a kiln in a predetermined coking chamber, and the lance 1 is positioned at a predetermined position such that the distance between the back stays (not shown) and the lance support 5 is not more than a predetermined value. Next, the fixed outer cylinder 7 is moved in the Y-axis and Z-axis directions via the slide plate 8 so that the center of the lance is located at the center of the carbonization chamber with reference to the embedding marker positions of the backstays on both sides (not shown). The lance tip position before extension at the time of being located at the center of the carbonization chamber is set as a reference point (0, 0, 0) of the X axis, the Y axis, and the Z axis. Then, the operator operates the lance drive system 37 to insert the lance into the coke oven, scan over the furnace wall to be repaired, and photograph the state of the furnace wall with the CCD camera 25 at the tip of the lance. The image of the furnace wall in a limited range (for example, 1 m square) is displayed on the repair monitor 34 as shown in FIG. The screen on the repair monitor 34 displays the moving distance of the X-axis, Y-axis, and Z-axis from the reference points (0, 0, 0) of the X-, Y-, and Z-axes of the repair material spraying position at the tip of the lance. The X axis of the corresponding coordinate,
A Y-axis wear image is displayed. The lance is moved by the lance drive system 38, and the absolute position of the repair material spraying position is determined based on the drive amount information input from the lance drive system 38 to the signal processing control unit 35, using the X-axis, Y-axis, and Z-axis.
The reference point (0, 0, 0) of the axis is determined as a starting point, and the deflection amount at the tip of the lance is estimated and corrected. Further, the wide area monitor 37 displays an image of the furnace wall of a relatively wide area as shown in FIG.

Next, the image information of the furnace wall in the limited range shown in FIG. 4, that is, the signal processing control unit 35 outputs the furnace wall wear amount data input from the laser distance meter 27,
Image processing is performed on the position coordinate data of the furnace wall recess due to the wear, and for example, the parts of the furnace wall as shown in FIG. 6 are classified according to the degree of wear, that is, the depth of the recess, and the wear distribution pattern is displayed on the repair monitor 34. I do. The operator instructs a necessary repair range in the furnace wall by the operation unit 39 as shown in FIG. 7 from the observation data of the wear distribution pattern in FIG. 6, the furnace wall temperature by the radiation thermometer 26, and the monitor screen in FIG. To set a predetermined repair pattern. The signal processing control unit 35 includes an operation unit 39
A control signal is sent to the lance drive system 38 based on the repair pattern input from the
And automatic repair is performed by the multi-stage telescopic lance device. In FIG. 7, a portion designated by a rectangle connecting the X marks is a necessary repair range, and the repair pattern is a pattern that scans the range in a meandering manner from top to bottom. This repair pattern may be arbitrary, may be preset, or may be manually operated by an operator. During this repair operation, a wide area camera 36 displays a relatively wide area image of the furnace wall on the wide area monitor 3.
7, the dust for spraying repair materials,
The status of the repair work can be checked from outside the furnace without being affected by smoke and high-temperature flame.

In the multistage telescopic lance device of the present invention, the tip of the lance can be inserted above the center of the coke oven by the mechanism of the rack 10 and the pinion 11, and when shortened, the entire length of the lance becomes extremely compact. The lance itself can be rotated (rotation angle R _X ) around the X axis in the longitudinal direction of the lance by the gear 17. The lance is attached to a lance elevator 3, and the lance elevator 3 is moved up and down along a mast 2 by a driving device 4 composed of a cylinder and a chain or a wire. The lance is attached to the lance lift 3 via a swing bearing, and can be tilted by the tilt gear 6. The mast 2 itself is also attached to the lance 1 via the turning mechanism 20, and can turn (turning angle R _Y ) around a vertical axis (Y axis). The movement of the lance in the Z-axis direction can be performed by sliding the slide plate 8 on the lance support base 5 in the extension direction thereof, or by moving the lance carriage 1 itself.

If the lance does not reach the furnace bottom even when the lance lift 3 is lowered to the lowermost limit, the lance drive system 38 is operated via the signal processing control unit 35, and the lance expansion and contraction length (L
_X ) and the tilt angle (R _Z ) are controlled so as to relatively change in a relation of a trigonometric function, so that the lance tip can be brought closer to the furnace bottom for repair. If the distance between the lance inserted into the furnace and the wall does not reach the set distance, the lance drive system 38 is operated via the signal processing control unit 35 in the same manner as described above, and the lance expansion and contraction length (L _X ) is determined. By controlling the turning angle R _Y , the space between the repair material spray nozzle 14 and the furnace wall surface can always be kept constant. As a result, the previously detected worn portion can be automatically repaired in an arbitrary pattern.

[0028]

As described above, according to the present invention,
The state of wear of the furnace wall can be visually grasped, the amount of wear can be quantitatively grasped, a repair range and a repair pattern can be selected, and repair can be performed by automatically operating a repair lance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall configuration of a multistage telescopic lance device used for a method of repairing a wall surface in a coke oven according to the present invention. 4 shows an example of a damaged portion and a repair pattern.

FIG. 2 is an enlarged horizontal sectional view showing a repair material spraying nozzle portion provided at a tip portion of a lance.

FIG. 3 is a block diagram illustrating a processing system mainly including a signal processing control unit.

FIG. 4 is an image of a furnace wall in a limited range (for example, 1 m square).

FIG. 5 is an image of a relatively wide furnace wall by a wide-area camera.

FIG. 6 is an image showing observation data of a wear distribution figure of a damaged portion.

FIG. 7 is an image showing an example of a repair range and a repair pattern.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 lance cart 2 mast 3 lance lift 4 drive 5 lance support 6 lance tilting gear 7 fixed outer cylinder 8 slide plate 9 first-stage lance 10 rack 11 pinion 12 second-stage lance 13 third-stage lance 14 Nozzle 15 Flexible hose 16 Winding mechanism 17 Gear 18 Bearing plate 19 Circular hole 20 Swivel mechanism 21 Operation room 22, 23, 24 Opening 25 CCD camera 26 Radiation thermometer 27 Laser distance meter 28 Rotating disk 29 Motor 30 Power cable 31, 32 , 33 Transmission line 34 Repair monitor 35 Signal processing control unit 36 Wide area camera 37 Wide area monitor 38 Lance drive system 39 Operation unit

──────────────────────────────────────────────────続 き Continuing from the front page (73) Patent holder 000002107 Sumitomo Heavy Industries, Ltd. 5-9-1-11 Kita Shinagawa, Shinagawa-ku, Tokyo (72) Inventor Keiji Matsuda 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki Steel Corporation Chiba Works (72) Inventor Tetsuro Uchida 1 Kawasaki-machi, Chuo-ku, Chiba-shi, Chiba Prefecture Kawasaki Steel Corporation Chiba Works, Chiba-shi (72) Inventor Tamotsu Takahashi 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Inside the Chiba Works, Ltd. (72) Tsutomu Matsuno, Inventor 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (72) Keiji Kamekawa 1-1-1, Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (72) Inventor Makoto Numazawa 4-33, Kitahama, Chuo-ku, Osaka City, Osaka Prefecture Sumitomo Metal Industries, Ltd. (72) Inventor Moriya Takazo 4-5-33, Kitahama, Chuo-ku, Osaka-shi, Osaka Sumitomo Metal Industries, Ltd. (72) Inventor Hidekuni Ito 4-5-33, Kitahama, Chuo-ku, Osaka-shi, Osaka Sumitomo Metal Industries, Ltd. (72) Invention Toshio Kondo 1850 Minato, Wakayama-shi, Wakayama Sumitomo Metal Industries Co., Ltd.Wakayama Works (72) Inventor Hideki Ohira 7 Kanazawacho, Kakogawa-shi, Hyogo Kansai Thermochemical Co., Ltd. 7 Kanazawa-cho, Kakogawa-shi, Kansai-Kansai Thermochemical Co., Ltd.Kakogawa Plant (72) Inventor Shigeru Yamada 5-2 Sokaicho, Niihama-shi, Ehime Sumitomo Heavy Industries Niihama Works (72) Inventor Hiroyuki Shiraishi Ehime 5-2, Sokai-cho, Niihama-shi, Niigata Sumitomo Heavy Industries Machinery Co., Ltd., Niihama Works (72) Inventor Teruhito Nishio 5-2, Sokai-cho, Niihama-shi, Ehime Prefecture Sumitomo Heavy Industries Machinery Co., Ltd. Niihama Works (72) Hideaki Soi, Niihama City, Ehime Prefecture 5-2 Kaimachi Sumitomo Heavy Industries, Ltd. Niihama Works (56) References JP-A-59-136381 (JP, A) JP-A-62-293112 (JP, A) JP-A-51-40631 (JP) JP-A-52-49044 (JP, A) JP-B-5-17277 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) C10B 29/06 C10B 41/00

Claims (2)

(57) [Claims] [Claim 1] have a spray nozzle of the repairing material to the tip, X
It can move in the axis and Z axis directions, and the X, Y and Z axes are medium
While scanning the furnace wall with an imaging device provided at the tip of a multi-stage telescopic lance rotatable around the heart and displaying it on a monitor,
The distance sensor provided in multiple stages telescopic lance tip, the multi
The distance between the tip of the multi- stage telescopic lance and the furnace wall surface is measured to determine the wear amount data of the furnace wall, and the amount of wear of the furnace wall with respect to the multi-stage telescopic lance tip is determined from the driving amount in the lance drive mechanism that drives the multi-stage telescopic lance. From the wall image information, the amount of wear data and the position coordinate data of the worn portion, the position coordinates are determined and the necessary repair range and repair pattern of the furnace wall are designated and selected, and the worn portion of the furnace wall is replaced with a predetermined repair pattern. A method for repairing a coke oven wall characterized by performing spray repair according to the following. 2. A nozzle for spraying a repair material at a tip,
A multi-stage telescopic lance that is movable in the axial and Z-axis directions and is rotatable about the X-axis, Y-axis, and Z-axis; and a lance drive mechanism that drives the multi-stage telescopic lance. A repair device provided with an imaging device that scans the furnace wall and a distance sensor that measures the distance between the lance tip and the furnace wall, a monitor that displays a wall image from the imaging device, and a monitor from the distance sensor. In addition to obtaining the wear amount data of the furnace wall by the signal, the position coordinates of the wear portion of the furnace wall with respect to the tip of the lance are obtained from the drive amount of the lance drive mechanism, and the wall image, the wear amount data and the position coordinate data of the wear portion are obtained. From the above, a signal processing control unit that determines a necessary repair range and a repair pattern of the furnace wall surface and displays the determined result on a monitor, and a repair device based on an instruction from the signal processing control unit, causes the repair device to damage the furnace wall surface. Repair device for coke oven furnace wall, characterized by comprising a portion of the lance operation unit for operating in accordance with a predetermined repair pattern.