JP2020164703A - Thermal spraying device and thermal spraying method for furnace wall - Google Patents

Abstract

To provide a thermal spraying device capable of expanding a possible processing range to improve accuracy in a spraying operation.SOLUTION: A thermal spraying device for performing thermal spraying to damaged parts on a furnace wall of a coke oven chamber in a coke oven includes: a thermal spraying burner for thermally spraying a thermal spraying material from a thermal spraying port; a nozzle part on which a laser distance meter is provided, the laser distance meter measuring a distance to an object by irradiating the object with laser beam from an irradiation port; and a manipulator having the nozzle part provided on a tip end thereof and operating the nozzle part to move to a predetermined position, wherein: the thermal spraying burner and the laser distance meter are provided on the nozzle part, so that the thermal spraying port in the thermal spraying burner and the irradiation port in the laser distance meter are positioned within the same surface orthogonal to an axis of the nozzle part and are in a different direction; and the nozzle part is formed to rotate around the axis of the nozzle.SELECTED DRAWING: Figure 1

Description

The present invention relates to a thermal spraying apparatus and a method for thermal spraying a furnace wall.

A coke oven in which coal is carbonized to produce coke consists of a carbonization chamber in which coal is charged and a combustion chamber in which fuel gas is burned to keep the carbonization chamber at a high temperature. The carbonization chamber and the combustion chamber are separated by a furnace wall formed by combining refractory bricks, and a plurality of carbonization chambers and combustion chambers are alternately arranged. The coke produced is extruded by an extruder and discharged from the carbonization chamber.

Here, when coke is extruded, a load due to pressure and wear is applied to the furnace wall. For this reason, the furnace wall of the coke oven has many vertical cracks and corner chipping defects in which the corners of the brick are chipped along the vertical cracks. Friction due to the weight of coke is large near the bottom of the furnace, and wall thinning is likely to occur. When the wall thinning progresses and reaches the combustion chamber, coke invades the combustion chamber and causes combustion failure. If the wall near the bottom of the furnace is thinned, the strength of the wall is reduced, which may cause the wall to collapse.

Regarding the repair of the furnace wall of the carbonization chamber of the coke oven, a thermal spraying device for measuring and repairing the thinned state of the bricks of the furnace wall has been conventionally proposed (for example, Patent Documents 1 and 2). In these thermal spraying devices, a laser range finder and a thermal spray burner are provided at the tip of a manipulator that is charged into the carbonization chamber in the coke extrusion direction. In the thermal spraying work, first, in the pre-thermal spraying stage, the unevenness of the repair range is measured by a laser range finder, and the thinned state of the brick is measured. Based on the measurement result, the amount of thermal spraying and the trajectory of the thermal spray burner are determined, and then the thermal spraying is performed by the thermal spray burner.

Japanese Unexamined Patent Publication No. 2018-44161 Japanese Patent No. 4528361

Here, in the thermal spraying device of Patent Document 1 and the like, as shown in FIG. 6, the laser range finder 14 at the tip of the manipulator 13 extending from the machine body 11 and the thermal spray burner 15 are separately arranged. Therefore, the measurable range of the laser range finder 14 and the thermal spraying range of the thermal spray burner 15 do not match. Therefore, when the laser range finder 14 and the thermal spray burner 15 try to process the same range, the manipulator is used. It is necessary to operate and align. However, since the movable range of the manipulator is limited, the range in which measurement and thermal spraying can be performed without operating the manipulator (hereinafter, also referred to as “processable range Q”) is restricted. Since the lower part of the side wall of the carbonization chamber is heavily worn by the weight of the coke, there is a high need for measurement and thermal spraying, but the lower part of the side wall of the carbonization chamber is out of the processable range.

In spraying apparatus 10 shown in FIG. 6 for example, because the laser range finder 14 on the spray burner 15 is located, can not be laser range finder 14 is closer to the furnace bottom S _B, 400 mm approximately from the furnace bottom S _B Can only be measured up to. Outside the processable range Q, the accuracy of the repair work is reduced because the amount of thermal spraying and the trajectory of the thermal spray burner are determined by the operator's visual measurement.

In order to enable measurement and thermal spraying of the lower portion of the side wall of the carbonization chamber, in the thermal spraying device 20 of Patent Document 2, as shown in FIG. 7, the tip of the laser rangefinder 24 is located in front of the thermal spray burner 25. , A laser rangefinder 14 at the tip of a manipulator 23 extending from the machine body 21 and a thermal spray burner 15 are arranged. Thus, the laser range finder 24 to spray burner 25 when the closer to the hearth S _B becomes possible to close the furnace bottom S _B, becomes measurable long range from the furnace bottom to about 80mm around the upper .. However, there is still a portion outside the processable range Q in the lower part of the side wall.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is a new and improved thermal spraying capable of expanding the processable range and improving the accuracy of thermal spraying work. The purpose is to provide an apparatus and a method for spraying a furnace wall.

In order to solve the above problems, according to a certain viewpoint of the present invention, a thermal spraying device for spraying a damaged portion of a furnace wall of a carbonization chamber of a coke furnace, a thermal spray burner for spraying a thermal spray material from a thermal spray port, and irradiation. A nozzle part provided with a laser distance meter that irradiates the object with laser light from the mouth and measures the distance to the object, and a nozzle part provided at the tip to move the nozzle part to a predetermined position. The thermal spray burner and the laser distance meter are provided with a manipulator that operates for the purpose, and the thermal spray burner and the thermal spray port of the laser distance meter are located in the same plane perpendicular to the axis of the nozzle portion. Provided is a thermal spraying device, which is provided in a nozzle portion so as to have a different orientation, and the nozzle portion is configured to be rotatable around the axis of the nozzle portion.

The orientation of the thermal spraying port of the thermal spray burner and the orientation of the irradiation port of the laser rangefinder may be different by 180 °.

Further, in order to solve the above problems, according to another viewpoint of the present invention, the thermal spraying device is a thermal spraying method for spraying a damaged portion of the furnace wall of a carbonization chamber of a coke furnace by using a thermal spraying device. , A nozzle part equipped with a thermal spray burner that sprays a thermal spray material from a thermal spray port, a laser distance meter that irradiates an object with laser light from the irradiation port and measures the distance to the object, and a nozzle at the tip. A part is provided and a manipulator that operates to move the nozzle part to a predetermined position is provided. In the thermal spray burner and the laser distance meter, the thermal spraying port of the thermal spray burner and the irradiation port of the laser range meter are the nozzles. It is provided in the nozzle part so that it is located in the same plane orthogonal to the axis and in a different direction, the irradiation port of the laser range meter is opposed to the furnace wall surface, and the manipulator is operated to operate the furnace wall surface. Based on the measurement process of measuring the distance to and from, and the thermal spraying port of the thermal spray burner facing the thermal spray wall surface to be repaired by rotating the nozzle unit around the axis of the nozzle unit by the rotation drive unit. A method of thermal spraying a furnace wall is provided, which comprises a thermal spraying step of spraying a damaged portion.

In the measurement process, when measuring the central part of the furnace wall in the height direction, the direction of the irradiation port of the laser rangefinder is set to a horizontal state perpendicular to the furnace wall surface, and the lower part of the furnace wall in the height direction is measured. In this case, the nozzle portion may be rotated toward the bottom of the furnace by the rotation drive portion, and the direction of the irradiation port of the laser range finder may be changed from the horizontal state to the oblique state.

In the thermal spraying process, when spraying the central part in the height direction of the furnace wall, the direction of the spray port of the thermal spray burner is set to a horizontal state perpendicular to the wall surface of the furnace, and when spraying the lower part in the height direction of the furnace wall. The spraying burner may be oriented from a horizontal state to an oblique state by rotating the nozzle part toward the bottom of the furnace by a rotary drive unit.

As described above, according to the present invention, the processable range can be expanded and the accuracy of the thermal spraying work can be improved.

It is a schematic block diagram which shows the structure of the thermal spraying apparatus which concerns on one Embodiment of this invention. It is explanatory drawing which shows the processable range by the thermal spraying apparatus which concerns on this embodiment. It is a top view and a partial sectional view which shows the structure of the nozzle part of the thermal spraying apparatus which concerns on this embodiment. As setting A, it is a schematic diagram which shows the setting state of the nozzle part at the time of performing measurement and thermal spraying on the central part in the height direction of a furnace wall. As setting B, it is a schematic diagram which shows the setting state of the nozzle part at the time of performing measurement and thermal spraying on the lower part of the furnace wall. It is a schematic explanatory drawing which shows an example of the conventional repair apparatus. It is a schematic explanatory drawing which shows an example of another conventional repair device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals to omit duplicate description.

<1. Device configuration>
[1-1. Thermal spraying device]
First, the schematic configuration of the thermal spraying device 100 according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic configuration diagram showing the configuration of the thermal spraying device 100 according to the present embodiment. FIG. 2 is an explanatory diagram showing a processable range Q by the thermal spraying apparatus 100 according to the present embodiment.

The thermal spraying device 100 is a device that is inserted into a carbonization chamber of a coke oven and sprays and repairs a wall thinning portion specified in advance. As shown in FIG. 1, the thermal spraying device 100 is mounted on a carriage 200 that can move in the direction of the coke oven in which carbonization chambers and combustion chambers are alternately arranged, and moves to the position of the carbonization chamber to be repaired. It is provided as possible.

The dolly 200 includes a mounting base 201 on which the base 101 of the thermal spraying device 100 is mounted, and a pair of legs 202 and 203 that support the mounting base 201. The legs 202 and 203 are placed on the bogie rails 211 and 213, and the bogie 200 is moved along the bogie rails 211 and 213 extending in the direction of the coke oven. The mounting table 201 is provided with a support mechanism 220 that supports the base 101 of the thermal spraying device 100. The support mechanism 220 is composed of a plurality of support rollers 221 to 224, for example, as shown in FIG. By moving the base 101 of the thermal spraying device 100 on the support rollers 221 to 224, the nozzle portion 107 provided at the tip of the thermal spraying device 100 can be inserted into the carbonization chamber or retracted from the carbonization chamber. it can.

The thermal spraying device 100 includes a base portion 101, a main body portion 102, a grounding portion 103, a manipulator 105, and a nozzle portion 107. The base 101 extends from the main body 102 of the thermal spraying device 100 toward the outside of the carbonization chamber, and is mounted on the carriage 200. On the other hand, the grounding portion 103, the manipulator 105, and the nozzle portion 107 are provided on the side opposite to the base portion 101 with respect to the main body portion 102. When the main body 102 is inserted into the carbonization chamber from the extruder side (PS) to the guide vehicle side (CS) by a predetermined distance or more, the grounding portion 103 grounds to the furnace bottom in the carbonization chamber and supports the main body 102. .. The manipulator 105 is a mechanism for moving the nozzle portion 107 provided at the tip portion of the thermal spraying device 100 to a desired position.

The manipulator 105 has a first positioning device 105a having one end fixed to the main body 102 and a connecting portion 105b provided at the other end, which can be expanded and contracted in the furnace length direction, and one end fixed to the connecting portion 105b and the other end. It is composed of a second positioning device 105c which is provided with a nozzle portion 107 and is movable in the furnace height direction. As shown in FIG. 2, the second positioning device 105c according to the present embodiment moves the nozzle portion 107 up and down in the furnace height direction by rotating in the furnace height direction around the connection portion 105b. The present invention is not limited to such an example, and may be a device for translating in the furnace height direction. With such a manipulator 105, the nozzle portion 107 at the tip of the thermal spraying device 100 can be moved to a desired position on the furnace wall.

The nozzle portion 107 is a portion moved to a thermal spraying position with respect to the furnace wall by the manipulator 105, and includes a thermal spray burner (thermal spray burner 110 in FIG. 3) and a laser range finder (laser range finder 121 in FIG. 3). The thermal spray burner sprays the thermal spray material toward the damaged part of the furnace wall. The furnace wall is repaired by spraying the sprayed material on the damaged part to flatten the furnace wall surface. A laser range finder is a measuring device that measures the unevenness of the surface of a coke oven wall. The laser range finder is inserted into the carbonization chamber of the coke oven and scans the wall surface on the carbonization chamber side in the furnace length direction. The detailed configuration of the nozzle portion 107 will be described later.

The configuration of the thermal spraying device 100 according to the present embodiment has been described above.

[1-2. Nozzle part]
Next, the configuration of the nozzle portion 107 of the thermal spraying device 100 according to the present embodiment will be described with reference to FIG. FIG. 3 is a plan view and a partial cross-sectional view showing the configuration of the nozzle portion 107 of the thermal spraying device 100 according to the present embodiment. Since the nozzle portion 107 is configured to be rotatable around the axis C as described later, the coordinates in FIG. 3 indicate αβγ coordinates based on one state of the nozzle portion 107, but the α direction is , The X direction of the XYZ coordinates shown in FIG. 2 and the like.

As described above, the nozzle portion 107 of the thermal spraying device 100 according to the present embodiment includes the thermal spraying burner 110 and the laser rangefinder 121 in the housing 130. The inside of the housing 130 is kept below the heat resistant temperature of the device by water cooling or the like in order to operate the device provided inside normally.

The thermal spray burner 110 sprays the thermal spray material supplied from the base 101 side of the thermal spraying device 100 onto the furnace wall to be repaired. The thermal spray material passes through the pipe of the thermal spray burner 110 and is sprayed from the thermal spray port 111. In addition, in FIG. 3 and FIGS. 4 and 5 described later, the side where the thermal spray burner 110 is provided is shown as the thermal spraying portion 107A with respect to the axis C of the nozzle portion 107.

The laser range finder 121 measures the distance to the object by irradiating the object (here, the damaged portion of the furnace wall) with the laser beam and receiving the reflected light reflected by the object. The laser beam emitted from the laser rangefinder 121 in a direction parallel to the axis C of the nozzle unit 107 (hereinafter, also referred to as “axial direction”) is changed in the traveling direction by the mirror 123 to be perpendicular to the axial direction. After that, it is emitted from the irradiation port 125. The irradiation port 125 is provided with a member such as heat-resistant glass that can transmit laser light. In addition, in FIG. 3 and FIGS. 4 and 5 described later, the side where the laser range finder 121 is provided is shown as the measurement unit 107B with respect to the axis C of the nozzle unit 107.

In the thermal spray burner 110 and the laser range finder 121, the thermal spray port 111 of the thermal spray burner 110 and the irradiation port 125 of the laser range finder 121 are located in the same plane orthogonal to the axis C of the nozzle portion 107 and have different orientations. It is provided in the nozzle portion 107 so as to be.

For example, as shown in FIG. 3, the thermal spraying port 111 of the thermal spray burner 110 and the irradiation port 125 of the laser range finder 121 are arranged back to back, that is, 180 ° different directions. As a result, the spraying direction of the thermal spray material sprayed from the thermal spray port 111 of the thermal spray burner 110 and the irradiation direction of the laser light emitted from the thermal spray port 125 of the laser range meter 121 are different by 180 °. The angle φ formed by the thermal spraying direction of the thermal spray burner 110 and the irradiation direction of the laser rangefinder 121 is not particularly limited.

Here, the nozzle portion 107 according to the present embodiment is configured to be rotatable around the axis C as a rotation center. The nozzle portion 107 is rotated by a rotation drive portion 107C provided at a connection portion with the manipulator 105. In the nozzle portion 107 shown in FIG. 3, the axis C coincides with the axis of the burner tube of the thermal spray burner 110, but these axes do not necessarily have to coincide with each other. By rotating the nozzle portion 107 around the shaft C, the thermal spraying port 111 of the thermal spray burner 110 can be opposed to the furnace wall to be repaired, or the irradiation port 125 of the laser rangefinder 121 can be opposed to the furnace wall. it can. In the configuration of the nozzle portion 107 shown in FIG. 3, since the nozzle portion 107 can be rotated by 180 ° on the same plane, the position of the irradiation port and the position of the spraying port can be exchanged. By rotating the nozzle portion 107 by 180 °, the thermal spray burner 110 and the laser range finder 121 can process the same range.

<2. Repair method ＞
The method of spraying a damaged portion of a furnace wall of a carbonization chamber of a coke oven using the above-mentioned thermal spraying device 100 includes a measurement step and a thermal spraying step. In the measurement step, the irradiation port 125 of the laser range finder 121 is made to face the furnace wall surface, and the manipulator 105 is operated to measure the distance to the furnace wall surface. After that, the rotation drive unit 107C rotates the nozzle unit 107 with the shaft C as the center of rotation so that the thermal spray port 111 of the thermal spray burner 110 faces the wall surface of the furnace to be repaired, and then the furnace is based on the measurement result of the measurement process. Thermal spraying is performed on the damaged part of the wall surface.

Here, in the conventional thermal spraying apparatus 100 as shown in FIGS. 6 and 7, since there is a portion outside the processable range Q in the lower part of the side wall, the amount of wall thinning of the furnace wall is determined by the laser distance for this portion. It cannot be measured quantitatively using a meter. Therefore, for example, it is necessary to estimate the amount of wall loss by visual measurement by an operator based on an image acquired by an imaging device inserted in the furnace, and manually set the amount of thermal spraying and the thermal spraying trajectory. For this reason, the accuracy of the thermal spraying work is lowered and it takes time. In addition, the sprayed material may be overfilled to cause a convex portion on the furnace wall, which may increase the extrusion load of coke and may rather damage the furnace wall.

Therefore, by using the thermal spraying device 100 according to the present embodiment, it is possible to expand the processable range Q in which measurement by the laser range finder 121 and thermal spraying by the thermal spray burner 110 are possible without operating the manipulator 105. As a result, the thermal spraying amount and the thermal spraying trajectory can be determined based on the wall thinning amount measured by using the laser range finder, so that the accuracy of the thermal spraying work can be improved.

That is, in the nozzle portion 107 according to the present embodiment, the thermal spray port 111 of the thermal spray burner 110 and the irradiation port 125 of the laser rangefinder 121 are located in the same plane orthogonal to the axis C of the nozzle unit 107, and The thermal spray burner 110 and the laser range finder 121 are provided so as to have different orientations. Such a nozzle portion 107 is rotated about the axis C as a rotation center according to the processing internal amount (that is, the measurement process or the thermal spraying process) and the position in the height direction of the repair range. This makes it possible to close the nozzle unit 107 to the hearth S _B, the processing range Q of the thermal spray burner 110 and the laser range finder 121 is enlarged. Hereinafter, a more detailed description will be given with reference to FIGS. 4 and 5.

(Setting A: Horizontal measurement / thermal spraying)
FIG. 4 shows a setting state of the nozzle portion 107 when measurement and thermal spraying are performed on the central portion in the height direction of the furnace wall as setting A. FIG. 4 shows a state in which the central portion of the carbonization chamber in the height direction is viewed from the furnace length direction (X direction). In the present embodiment, the central portion in the height direction of the carbonization chamber refers to a range of height positions in which the same position can be processed by the thermal spray burner 110 and the laser range finder 121 without operating the manipulator 105. Usually, towards the furnace bottom S _B or ceiling S _C in the height direction center of the coking chamber is outside the range of up to a predetermined length, the height direction central portion of the carbonization chamber.

Here, a pair of side walls S _R constituting the coking _chamber, consider the case of repairing by spraying the damaged portion R caused in the side wall S _R of S _L. Setting A is a setting for performing normal measurement and thermal spraying, and the direction of the thermal spray port 111 of the thermal spray burner 110 and the direction of the irradiation port 125 of the laser range finder 121 are horizontal states perpendicular to the furnace wall surface. Will be done.

For example, in the spraying process, as shown in FIG. 4 above, the orientation of the spray port 111 of the thermal spray burner 110 faces the furnace wall S _R repair target, so that a horizontal rotation angle of the nozzle portion 107 is adjusted To. Further, in the measurement process, as shown in FIG. 4 below the orientation of the irradiation port 125 of the laser range finder 121 is opposed to the furnace wall S _R repair object, so that the horizontal, the rotation angle of the nozzle portion 107 It will be adjusted. In the case of the nozzle portion 107 in which the angle φ formed by the thermal spraying direction of the thermal spray burner 110 and the irradiation direction of the laser distance meter 121 differs by 180 ° as in the nozzle portion 107 shown in FIG. 4, the nozzle portion 107 is 180 by the rotation drive unit 107C. By rotating °, processing at the same position can be performed.

(Setting B: Measurement / thermal spraying in an oblique state)
FIG. 5 shows a setting state of the nozzle portion 107 when measuring and spraying the lower part of the furnace wall as setting B. FIG. 5 shows a state in which the lower part of the carbonization chamber in the height direction is viewed from the furnace length direction (X direction). Again, similar to FIG. 4, a pair of side walls S _R constituting the coking _chamber, consider the case of repairing by spraying the damaged portion R caused in the side wall S _R of S _L. The setting B is a setting when the same position cannot be processed without operating the manipulator 105 when the nozzle portion 107 is set to the setting A. At this time, the direction and orientation of the laser rangefinder 121 irradiation port 125 of the spray port 111 of the thermal spray burner 110 is an oblique state in which a predetermined angle from the horizontal state to the furnace bottom S _B side.

For example, in the spraying process, as shown in FIG. 5 above, the orientation of the spray port 111 of the thermal spray burner 110 faces the furnace wall S _R repair target, and directed only furnace bottom S _B-side angle θ from the horizontal state As described above, the rotation angle of the nozzle portion 107 is adjusted. Further, in the measurement process, as shown in FIG. 5 below the orientation of the irradiation port 125 of the laser range finder 121 is opposed to the furnace wall S _R repair target, and, by an angle θ from the horizontal state hearth S _B side The rotation angle of the nozzle portion 107 is adjusted so as to face. The angle θ rotated from the horizontal state is set to, for example, about 30 °. In the case of the nozzle portion 107 in which the thermal spraying direction of the thermal spray burner 110 and the irradiation direction of the laser distance meter 121 are different by 180 ° as in the nozzle portion 107 shown in FIG. 5, the rotatable angle θmax of the nozzle portion 107 by the rotary drive unit 107C is It becomes (180 ° + 2θ).

Thus, in the vicinity of the furnace bottom S _B by rotating the nozzle section 107 about the axis C, and the orientation and laser range finder 121 orientation of the irradiation port 125 of the spray port 111 of the thermal spray burner 110 is set obliquely downward , for example, a wall S _R, such as the corner portion of the S _L and the furnace bottom S _B, it is possible to measure and spraying of the side walls of the furnace bottom S _B vicinity.

The rotation drive unit 107C that rotates the nozzle unit 107 is controlled by a control device (not shown) that controls the overall operation of the thermal spraying device 100. The rotation drive unit 107C is driven based on an instruction from the control device to rotate the nozzle unit 107 so as to have a predetermined angle. At this time, the control device sets the setting A and the setting B in advance according to the processing internal amount and the position in the height direction of the repair range, and automatically switches between the setting A and the setting B based on the position of the nozzle portion 107. You may do so.

The configuration of the thermal spraying device 100 and its operation according to the present embodiment have been described above. According to the present embodiment, in the nozzle portion 107 of the thermal spraying device 100, the thermal spray port 111 of the thermal spray burner 110 and the irradiation port 125 of the laser distance meter 121 are located in the same plane orthogonal to the axis C of the nozzle portion 107. The thermal spray burner 110 and the laser range meter 121 are provided so as to be located and oriented in different directions. Such nozzle section 107, according to the height direction position of the processing amount and repair range, by rotating the shaft C as the center of rotation, it becomes possible to close the nozzle unit 107 to the hearth S _B, As shown in FIG. 2, the processable range Q of the thermal spray burner 110 and the laser range finder 121 can be expanded.

As a result, the thermal spraying amount and the thermal spraying trajectory can be determined based on the wall thinning amount measured by using the laser range finder, so that the accuracy of the thermal spraying work can be improved. Since the manual processing by the operator is not required, the processing time can be shortened. In particular, since it is possible to repair the side wall near the bottom of the furnace where the wall thickness is remarkable, it is possible to reduce the coke extrusion load, avoid troubles due to coke clogging, and suppress a decrease in coke production. Further, by performing appropriate thermal spraying repair, it is possible to reduce the decrease in the strength of the furnace wall and extend the equipment life of the coke oven.

Further, the repair device of Patent Document 2 is equipped with three laser rangefinders for two side walls of the furnace wall and for the bottom of the furnace. On the other hand, since the nozzle portion 107 according to the present embodiment is configured to be rotatable, it is possible to measure all the distances between the two side walls and the furnace bottom by providing one laser range finder 121. it can. As a result, the thermal spraying device 100 can be miniaturized, and the equipment associated with driving the laser rangefinder 121 can be reduced, so that the equipment cost can be reduced.

Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that a person having ordinary knowledge in the field of technology to which the present invention belongs can come up with various modifications or modifications within the scope of the technical ideas described in the claims. , These are also naturally understood to belong to the technical scope of the present invention.

10, 20, 100 Thermal spraying device 11, 21 Aircraft 13, 23, 105 Manipulator 14, 24, 121 Laser rangefinder 15, 25, 110 Thermal spray burner 101 Base 102 Main body 103 Grounding 107 Nozzle 107A Thermal spray 107B Measuring 107C Rotation drive part 111 Thermal spraying port 123 Mirror 125 Irradiation port 130 Housing 200 Carriage 201 Mounting stand 202, 203 Legs 211, 213 Carriage rail 220 Support mechanism 221 222, 223, 224 Support roller

Claims (5)

It is a thermal spraying device that sprays the damaged part of the furnace wall of the carbonization chamber of the coke oven.
A nozzle portion provided with a thermal spray burner that sprays a thermal spray material from a thermal spray port, a laser range finder that irradiates an object with laser light from an irradiation port and measures the distance to the object.
A manipulator in which the nozzle portion is provided at the tip and operates to move the nozzle portion to a predetermined position.
With
In the thermal spray burner and the laser rangefinder, the thermal spraying port of the thermal spraying burner and the irradiation port of the laser rangefinder are located in the same plane orthogonal to the axis of the nozzle portion and have different orientations. As described above, the nozzle portion is provided.
The nozzle portion is a thermal spraying device that is configured to be rotatable around the axis of the nozzle portion. The thermal spraying apparatus according to claim 1, wherein the orientation of the thermal spraying port of the thermal spray burner and the orientation of the thermal spraying port of the laser rangefinder are different by 180 °. It is a method of thermal spraying the damaged part of the furnace wall of the carbonization chamber of a coke oven using a thermal spraying device.
The thermal spraying device
A nozzle portion provided with a thermal spray burner that sprays a thermal spray material from a thermal spray port, a laser range finder that irradiates an object with laser light from an irradiation port and measures the distance to the object.
A manipulator in which the nozzle portion is provided at the tip and operates to move the nozzle portion to a predetermined position.
With
In the thermal spray burner and the laser rangefinder, the thermal spraying port of the thermal spraying burner and the irradiation port of the laser rangefinder are located in the same plane orthogonal to the axis of the nozzle portion and have different orientations. As described above, the nozzle portion is provided.
A measurement step in which the irradiation port of the laser range finder is made to face the furnace wall surface and the manipulator is operated to measure the distance to the furnace wall surface.
The rotation drive unit rotates the nozzle portion around the axis of the nozzle portion so that the spray port of the thermal spray burner faces the wall surface of the furnace to be repaired, and sprays the damaged portion based on the measurement result of the measurement process. Thermal spraying process and
A method of thermal spraying the furnace wall, including. In the measurement process,
When measuring the central portion in the height direction of the furnace wall, the direction of the irradiation port of the laser range finder is set to a horizontal state perpendicular to the furnace wall surface.
When measuring the lower part of the furnace wall in the height direction, the rotation driving unit rotates the nozzle portion toward the bottom of the furnace, and the direction of the irradiation port of the laser rangefinder is changed from the horizontal state to the oblique state. The method for spraying a furnace wall according to claim 3. In the thermal spraying step,
When spraying the central portion in the height direction of the furnace wall, the direction of the spray port of the spray burner is set to a horizontal state perpendicular to the furnace wall surface.
When spraying the lower part of the furnace wall in the height direction, the rotation driving unit rotates the nozzle portion toward the bottom of the furnace, and the direction of the spray port of the spray burner is changed from the horizontal state to the oblique state. Item 3. The method for spraying a furnace wall according to Item 3.

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