JPH07278554A - Mending of sole flue part - Google Patents

Abstract

PURPOSE:To provide a method for mending a sole flue part capable of accurately and automatically detecting the discontinuous joint and crack of sole flue part and enabling the automation of the mending of the sole flue part. CONSTITUTION:A self-propelled vehicle 22 is traversed through either the right or the left space in a gas-side sole flue part partitioned with a gas-supplying pipe and the combustion heat generated in the air-side sole flue part by the air leaked through a discontinuous joint part of the gas-side sole flue part is detected by a temperature sensor 23 mounted on the vehicle 22. Mortar is sprayed to the detected discontinuous joint part through nozzles 27a, 28a of a mending apparatus 25 mounted on the self-propelled vehicle 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a sole flue portion, and more specifically, it can accurately and automatically detect a joint cut portion or a crack portion of the sole flue portion and further automates the repair of the sole flue portion. The present invention relates to a method for repairing a sole flue part that can achieve

[0002]

2. Description of the Related Art The inside of a coke oven is roughly divided into three stages: a carbonization chamber and a combustion chamber in the upper part, a heat storage chamber in the central part, and a sole flue part in the lower part. The sole flue part is
One pair of right and left are arranged below the heat storage chambers in each row, and a gas supply pipe or an air supply pipe extending upward protrudes in a line at the center portion in the width direction. The left and right sole flue portions serve as a supply path for poor gas or air or an exhaust gas discharge path in accordance with the supply of combustion gas to the heat storage chamber and the exhaust gas discharge from the heat storage chamber.

By the way, the temperature of the heat storage chamber is 10 when the heat storage brick stuck inside is discharged from the combustion chamber.
By absorbing the heat of the combustion gas of 00 ℃, 600 ~
It is maintained at a high temperature of 700 ° C. As a result, the sole flue portion immediately below each heat storage chamber, particularly the upper portion of the sole flue portion, is in a high temperature state by receiving heat from the heat storage chamber. As a result, the brick joints on the side walls that partition the sole flue parts are damaged, and joint breaks and cracks occur, and mixing of poor gas and air occurs between both sole flue parts, resulting in coal carbonization in the carbonization chamber. There was a hindrance and the coke quality was reduced.

Therefore, in order to solve this problem, a joint crack repair work has been conventionally performed manually. In this repair work, the operation of the coke oven was temporarily stopped, then the gas supply pipes and air supply pipes were removed from each sole flue section, and then the operator entered the narrow sole flue section and visually measured joint breaks and cracks. The repair method was to find the part and spray mortar.

[0005]

However, since the conventional joint crack repair work is a method in which the worker dives into the narrow sole flue portion as described above, the coke oven operation is temporarily stopped to cool the furnace. This must promote furnace damage, which must be done by removing the change valve at the end of the sole flue section and removing the gas and air supply pipes so that a person can enter a narrow coke oven. However, there is a problem that the maintenance cost becomes high. Also, because the joint breaks and cracks were inspected by the operator's eyes, it was a superficial inspection that relied on the feeling, and the joint breaks and cracks that were found actually separated the wall. It was not possible to judge whether or not it was connected to the sole flue part on the opposite side. As a result, when joint damage or crack damage is found on bricks, mortar is applied to all parts regardless of the extent of joint breaks and cracks, which further increases maintenance costs. There was a problem.

Therefore, it is conceivable to apply a camera for detecting joint breakages in the carbonization chamber, as shown in, for example, Japanese Patent Laid-Open No. 3-105195, "Method and apparatus for observing inner wall of coke chamber". The sole flue part has a cross-sectional area of 700 mm in height and about 300 mm in width, and a gas supply pipe or an air supply pipe with an outer diameter of 90 mm is projected in the central portion in the width direction, which is a narrow space. Therefore, it is practically impossible to inspect using an industrial camera. Further, although a means using a fiberscope is also conceivable, it is expected that illumination is required, the imaging range is narrow, the detection time and the mortar spraying time are significantly increased, and the maintenance cost is increased.
Moreover, with these cameras and fiberscopes, similarly to the case of the eye measurement, only the surface inspection is performed, and it is impossible to detect the above-mentioned joint breakage or crack state in the thickness direction of the brick.

The present invention has been made in view of the above circumstances, and a method for repairing a sole flue portion capable of accurately and automatically detecting joint breaks and cracks in the sole flue portion and automating the repair of the sole flue portion. The purpose is to provide.

[0008]

A method according to the above-mentioned object.
The sole flue part repairing method described above is arranged one pair below each of the heat storage chambers in each row provided in the coke oven, and has a gas supply pipe or an air supply pipe extending upward in the center portion in the width direction. A method of repairing a sole flue portion protruding in a line, wherein the self-propelled carriages are run one by one in the left and right spaces in the gas side sole flue portion partitioned by the gas supply pipe, to the self-propelled carriage. The temperature sensor mounted detects the combustion heat through the air of the air side sole flue portion leaking from the joint cutout portion or the crack portion of the gas side sole flue portion, and then the detected joint breakage portion or Mortar is sprayed onto the crack from a nozzle of a repair device mounted on the self-propelled carriage.

According to a second aspect of the present invention, there is provided a method for repairing a sole flue portion according to claim 1, wherein the temperature sensor and the repair device are mounted at different positions on the self-propelled carriage. After the detection of the joint cut portion or the crack portion by the temperature sensor, the position of the detected joint cut portion or the crack portion, considering the distance difference between the nozzle position of the repair device, a predetermined distance The mortar is sprayed after the self-propelled carriage is run in a predetermined direction to correct the position.

[0010]

In the method for repairing the sole flue portion according to claims 1 and 2, when the poor gas and air are supplied to the sole flue portion, for example, gas cutting of the poor gas to the gas side sole flue portion is performed. As a result, the gas concentration in the gas-side sole flue portion decreases, and as a result, air flows into the gas-side sole flue portion from the relatively high-pressure air-side sole flue portion, passing through joint breaks and cracks. Clean air is mixed with surrounding poor gas diluted to a combustible concentration, and the heat transmitted from the heat storage chamber ignites and burns this. At this time, run the self-propelled carts one by one in the left and right spaces of the sole flue part,
Since the temperature sensor detects the burning portion of the leaked gas, that is, the joint cut portion or the crack portion, the joint cut portion or the crack portion of the sole flue portion can be accurately and automatically detected. afterwards,
Since the mortar is sprayed from the nozzle of the repair device toward the detected joint breakage portion or crack portion, the repair of the sole flue portion can be automated.

Particularly, in the method for repairing the sole flue part according to claim 2, when the self-propelled carriage to be used is a carriage equipped with a temperature sensor and a repair device at different positions,
Since the detection position of the joint break or crack by the temperature sensor is far from the spraying position of the mortar blown out from the nozzle of the repair device, after detecting the joint break or crack, the self-propelled carriage is a predetermined distance. To match the spray position with the joint cuts and cracks, and then spray mortar. This eliminates the inconvenience that the mortar blown onto the temperature sensor adheres and the temperature measuring function deteriorates.

[0012]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. 1 is a front view of a sole flue portion repairing device applied to a sole flue portion repairing method according to an embodiment of the present invention, and FIG. 2 is an overall structure of a coke oven repaired by the sole flue portion repairing method. FIG. 3 is a perspective view, FIG. 3 is an enlarged sectional view of an essential part showing a state of repair work of the sole flue portion, FIG. 4 is an enlarged plan view of an essential part showing a state of repair work of the sole flue part, and FIG. 5 is an enlarged plane view of a flat nozzle for spraying a ceiling mortar. Figure,
FIG. 6 shows an enlarged front view of a flat nozzle for spraying ceiling mortar.

As shown in FIG. 2, a coke oven 10 to be repaired by a sole flue repair method according to an embodiment of the present invention has a large number of carbonization chambers 11 and, for example, 30 coke ovens each at its upper part. The rows of the combustion chambers 12 are alternately arranged, and a large number of the heat storage chambers 1 are provided below the respective carbonization chambers 11.
3 are provided in a line along the length direction of the carbonization chamber 11.

Below the heat storage chambers 13 in each row, a gas side sole flue portion 14 extending in a continuous manner of the heat storage chambers 13 is provided.
A and the air side sole flue portion 14B are arranged in pairs. A main gas pipe 15A for supplying a poor gas extends below the gas side sole flue portion 14A, and a main air pipe 15B extends below the air side sole flue portion 14B. The exhaust side of each sole flue section 14A, 14B is
A valve 16 is provided on the way and is connected to the chimney 17, and a valve 18 is also provided on the way of the main gas pipe 15A and the main air pipe 15B. Then, as shown in FIGS. 3 and 4, the sole flue portions 14A, 14
A gas supply pipe 15 extending upward is provided at the center of B in the width direction.
a or the air supply pipe 15b is projected in a line.
Next, the sole flue portion repairing device 20 will be described in detail with reference to FIGS.

As shown in FIG. 1, the sole flue repair device 20 has a self-propelled carriage 22 to which a drive motor 21 is attached. A thermocouple type temperature sensor 23, a control unit 24 provided with a distance correcting means, and a repair device 25 are sequentially mounted on the self-propelled carriage 22 from the front side of the arrow in the figure. The repair device 25 includes a side wall spray pipe 27 and a ceiling spray pipe 2 on a pedestal 26 on an intermediate portion of the self-propelled carriage 22.
8 are provided upright, and the horizontal or upward flat nozzles 27a, 2 for spraying mortar onto the side walls of the sole flue portions 14A and 14B are provided at the tips of both pipes 27, 28.
8a are connected (see also FIGS. 5 and 6). These flat nozzles 27a and 28a are provided on the gas side sole flue portion 14
The shape is such that the mortar can be sprayed over the entire height of the side wall of A and the entire width of the ceiling. It should be noted that the flat nozzles 27a and 28a may not be used as described above, but may be, for example, a nozzle having a known swinging mechanism.

A blower device 29 arranged on the front side of the truck and a tank 30 for storing mortar arranged on the rear side of the truck are connected to the bases of the two pipes 27 and 28, respectively. Further, a supply pipe 31 for supplying mortar is connected to the upper portion of the tank 30. The tank 30 is fixed on a mounting frame 32, and the base of the supply pipe 31 is connected to an external mortar supply device 33 (see FIG. 4).

Next, the sole flue portion repairing device 10
A method of repairing a sole flue portion according to an embodiment of the present invention using the above will be described. As shown in FIGS. 3 and 4, when the poor gas and air are supplied into the sole flue portions 14A and 14B, the gas is temporarily cut from the poor gas. This reduces the gas concentration in the gas side sole flue portion 14A,
Air flows from the relatively high-pressure air side sole flue portion 14B to the space on the left side of the gas side sole flue portion 14A after passing through the joint cut portion 35 that penetrates the partition wall made of bricks 34 and the leaked air. , Mixed with the surrounding poor gas diluted to a combustible concentration, and this is the heat storage chamber 1
It is heated by the heat transmitted from 3 and ignites, and a flame 36 appears.
It is to be noted that it is easy to form the joint cut portion 35 in the vertical joint. This is because even if a joint break is formed in the horizontal joint, it will be crushed by the weight of the furnace body.

At this time, first, the gas side sole flue portion 1
When the self-propelled carriage 22 is run in the space on the left side of FIG. 4 of 4A,
The temperature sensor 23 mounted on the front side of the self-propelled carriage 22 catches the heat of the flame 36 generated on the side wall at the position indicated by the alternate long and short dash line in FIG. 4, and the position of the joint cut portion 35 is detected. in this way,
In this means, the self-propelled carriage 22 is connected to the gas side sole flue unit 1
Since the temperature sensor 23 detects the heat of the flame 36, which is generated only when the vehicle is running within 4A and the joints through the side walls are not broken, there is no need for illumination, and in the case of conventional visual measurement. As described above, it is possible to easily determine the joint breakage in the thickness direction of the brick 34 without depending on the feeling of the operator, and the joint breakage portion 35 of the gas side sole flue portion 14A is automatically detected with high accuracy. it can.

Further, in the sole flue repair device 20 of the embodiment, the detection position of the joint cut portion 35 by the temperature sensor 23 and the spray position of the mortar blown out from the flat nozzle 27a of the repair device 25 are apart from each other. After detecting the joint break portion 35, the distance correction means of the control unit 24 causes the self-propelled carriage 22 to travel to the position indicated by the chain double-dashed line in FIG. 4 to match the spraying position with the joint break portion 35, and then spray the mortar. To do. As a result, there is no risk that, for example, part of the blown-out mortar adheres to the temperature sensor 23 and the temperature measuring function of the temperature sensor 23 deteriorates.

As described above, since the mortar stored in the tank 30 is sprayed from the flat nozzle 27a toward the detected joint cut portion 35, the repair of the gas side sole flue portion 14A can be automated.

As described above, the self-propelled carriage 22 automatically runs, the temperature sensor 23 automatically detects the joint cut portion 35, and the repairing device 25 automatically sprays the mortar to repair the joint cut portion 35. Even if the operation of the coke oven 10 is not stopped, the gas side sole flue portion 14A can be repaired at a high temperature, the damage due to the cooling of the furnace body as in the conventional case can be reduced, and the troublesome gas supply pipe 15a and air supply pipe 15b can be reduced. This saves the trouble of removing the parts, shortens the repair time, and significantly reduces the maintenance cost. Even when detecting the joint cut portion 35 formed on the side wall surface on the opposite side of the gas side sole flue portion 14A,
Do the same.

Although the present invention has been described above, the present invention is not limited to these embodiments, and any modification such as designing within the scope not departing from the gist is included in the present invention. For example, in the embodiment, the thermocouple type is used as the temperature sensor, but the temperature sensor is not limited to this, and any other type of temperature sensor may be used as long as it can withstand high heat.

Further, in the embodiment, the temperature sensor and the nozzle of the repair device are arranged so as to be separated from each other, but the present invention is not limited to this, and for example, the temperature sensor may be attached to the nozzle and integrated. Further, the nozzle shape of the repair device is not limited to the flat nozzle of the embodiment, but may be any other shape or structure such as a swing type.

[0024]

According to the sole flue portion repairing method of the first and second aspects, when the gas concentration in the sole flue portion is lowered and the leaked gas from the joint cut portion or the crack portion is burned, the gas side The self-propelled carriage is run in the space on the left and right of the sole flue part, and the temperature sensor detects the joint breakage and cracks, and the mortar is sprayed from the nozzle of the repair device, so the joint flesh joint breaks and cracks Can be detected accurately and automatically, and the repair of the sole flue part can be automated.

In particular, in the sole flue part repairing method according to the second aspect, since the self-propelled carriage equipped with the temperature sensor and the repairing device at different positions is used, after detecting the joint breakage portion or the crack portion, it is predetermined. The self-propelled vehicle is driven for a distance to match the spray position with the joint cuts and cracks, and then the mortar is sprayed, which causes the mortar to adhere to the temperature sensor and reduce the temperature measurement function. Can be resolved.

[Brief description of drawings]

FIG. 1 is a front view of a sole flue portion repairing device applied to a sole flue portion repairing method according to an embodiment of the present invention.

FIG. 2 is an overall configuration perspective view of a coke oven repaired by the sole flue repair method.

FIG. 3 is an enlarged sectional view of essential parts showing a state of repair work of a sole flue portion.

FIG. 4 is an enlarged plan view of an essential part showing a state of a sole flue part repair work.

FIG. 5 is an enlarged plan view of a flat nozzle for spraying ceiling mortar.

FIG. 6 is an enlarged front view of a flat nozzle for spraying a ceiling mortar.

[Explanation of symbols]

 10 coke oven 11 carbonization chamber 12 combustion chamber 13 heat storage chamber 14A gas side sole flue portion 14B air side sole flue portion 15A main gas pipe 15B main air pipe 15a gas supply pipe 15b air supply pipe 16 valve 17 chimney 18 valve 20 sole flue portion Repair device 21 Drive motor 22 Self-propelled carriage 23 Temperature sensor 24 Control part 25 Repair device 26 Frame 27 Side wall spray pipe 27a Flat nozzle 28 Ceiling spray pipe 28a Flat nozzle 29 Blower device 30 Tank 31 Supply pipe 32 Mounting frame 33 Mortar Supply device 34 Brick 35 Joint break 36 Flame

Claims (2)

[Claims] 1. A pair of gas storage pipes or air supply pipes, which are arranged in pairs below the heat storage chambers in each row provided in the coke oven, and which extend upward in a central portion in the width direction, respectively. In the method for repairing the sole flue part, the self-propelled carriages are run one by one in the left and right spaces in the gas side sole flue portion partitioned by the gas supply pipe, and the temperature mounted on the self-propelled carriage is By the sensor, the combustion heat through the air of the air side sole flue portion leaking from the joint cutout portion or the crack portion of the gas side sole flue portion is detected, and then to the detected joint cut portion or cracked portion,
A method for repairing a sole flue part, characterized in that mortar is sprayed from a nozzle of a repair device mounted on the self-propelled carriage. 2. The temperature sensor and the repair device are mounted at different positions of the self-propelled carriage, and after the joint sensor detects a joint break or a crack by the temperature sensor, the detected joint break is detected. Considering the distance difference between the position of the crack and the nozzle position of the repair device, the self-propelled carriage is run in a predetermined direction for a predetermined distance to correct the position, and then the mortar is sprayed. The method for repairing a sole flue portion according to claim 1, which is characterized in that.