JPH05311173A - Device for repairing wall of coke oven - Google Patents

Abstract

PURPOSE:To provide the device capable of repairing the cracks, edge breakages, etc., of the wall of a coke oven by a remote operation by inserting a water-cooled cylindrical frame having a monitoring device and a flame-coating or spraying repair nozzle therein into a combustion chamber-inspecting opening and operating a lifting device and a revolving and traversing device from the outside of the oven. CONSTITUTION:In a coke oven wall-repairing device for repairing cracks, edge breakage, etc., generated in a wall dividing a combustion chamber 25 and a carbonization chamber 28 in the coke oven, a water-cooled cylindrical frame 1 is guided on guide rails 2 and on guide rollers 3 and inserted into a coke oven combustion-inspection opening 24, rotated and traversed with a rotating and traversing device 7 on a revolution table 6 and subsequently operated from the outside of the oven to repair the wall of the coke oven while securing the safety of workers and reducing their labors. The water-cooled cylindrical frame 1 has a monitoring device and a flame-coating and spraying repair nozzle 14 therein, the tip flexural part 13 of the frame being formed in a multi-joint shape, the outer periphery of the tip flexural part being covered with an elastic tube, and a tense wire being disposed at a place deviated from a central line combining the joining pins of the multi-joints.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for repairing cracks, chipped corners, etc. formed in a wall separating a combustion chamber and a carbonization chamber in a coke oven.

[0002]

2. Description of the Related Art In a chamber furnace type coke oven, coal is charged into a carbonization chamber and the temperature of the coal is raised by heating from a combustion chamber to carry out dry distillation. At this time, the partition wall that separates the combustion chamber and the carbonization chamber is about 1000 ° C. on the carbonization chamber side and 1000 to 1300 on the combustion chamber side.
Exposed to a temperature of ° C. Furthermore, the temperature is lowered during the charging of coal and the removal of coke from the coke, and it is repeatedly subjected to thermal shock by raising and lowering the temperature. Further, the partition wall is subjected to mechanical expansion due to the expansion pressure of coal during carbonization and friction with coke due to mechanical extrusion during kiln removal. As a result, the partition wall is cut off at the joints and is damaged to cause gas leakage.

Therefore, in order to extend the life of the coke oven, the repair of the partition wall is indispensable. As a device for repairing this partition wall, a device for spraying or spraying from the carbonization chamber side has been reported. For example, Japanese Patent Examinations 3-9
As shown in Japanese Patent No. 955, there is a repair device for the central part of the carbonization chamber. The feature of this technology is to insert a water cooling repair lance from the coal charging port for the purpose of repairing the central part of the carbonization chamber,
The lance is installed so that it can be raised and lowered and tilted along the partition wall to repair the partition wall. Further, JP-A-59-1470
As shown in Japanese Patent No. 78, there is one that repairs from both the coke side and machine side kilns. However, this technique is limited to the repair in the vicinity of the kiln. Further, as disclosed in JP-A-1-315487, a method of press-fitting refractory mortar from the combustion chamber side has been reported. This technique is characterized in that the work of removing the deposits on the wall surface is unnecessary and the consumption of mortar can be reduced. However, they rely on heavy muscle work by human operations.

[0004]

[Patent Document 1] Japanese Patent Publication No. 3-995
No. 5, JP-A-59-147078 repairs the partition wall from the carbonization chamber side, and it is necessary to sufficiently remove carbon adhering to the carbonization chamber side partition wall immediately before repairing and repair the partition wall. .. In addition, the surface of the partition wall after repair must be finished smoothly for the purpose of avoiding an increase in extrusion resistance during the kiln removal and preventing the occurrence of clogging. Therefore, it is necessary to level the surface irregularities after the repair. In this way, pre-processing and post-processing are required in addition to the repair time, and most of the work time must be spent on pre-processing and post-processing.
There was a problem that the downtime of the coke oven was prolonged and the coke productivity was affected. Further, generally, the diameter of the combustion chamber inspection port is around 120 mm, which is much smaller than the carbonization chamber inlet diameter (about 400 mm).
However, a joint provided with a drive unit and a gear as described in Japanese Patent No. 55 has a problem that it cannot be inserted into the combustion chamber. Further, the device disclosed in Japanese Patent Laid-Open No. 59-147078 repairs from the kiln mouth by a cantilevered horizontal lance, and when repairing up to the center of the furnace, it is necessary to make the lance and the frame strong. Yes, the increase in equipment cost is
It was inevitable. In the method disclosed in Japanese Unexamined Patent Publication No. 1-315487, it is a human work, and this work is a heavy work in a high-temperature and high-dust-containing atmosphere, which is very difficult for the operator. Met.

Therefore, an object of the present invention is to eliminate the problems of the above-mentioned prior art, that is, the pretreatment and the posttreatment, shorten the repair time, ensure the safety of workers and reduce the labor, and It is to provide an inexpensive device that can be repaired to the center.

[0006]

In order to solve the above problems, the gist of the present invention is to provide a joint capable of rotating in a fixed direction by covering the outer circumference of a bent portion of a water-cooled tubular machine body with a telescopic tube and providing a plurality of joints inside. A structure in which a tension wire is arranged at a position eccentric from the center line connecting the joint joint pins with connecting pins, and the water-cooled tubular body has a monitoring device and a spraying or spraying repair nozzle built-in. The coke oven furnace wall repair device is provided with an elevating device and a swivel traverse device for the coke oven that can be operated from outside the furnace.

[0007]

According to the present invention, the diameter of the water-cooled tubular body is 100 mm.
The water-cooled tubular body can be inserted from the combustion chamber inspection port, and the partition wall that separates the carbonization chamber and the combustion chamber can be repaired from the combustion chamber side. Moreover, since the combustion chamber is installed in the entire longitudinal direction of the carbonization chamber, it is possible to repair the entire partition wall. Furthermore, the water-cooled tubular machine body was moved up and down and swung by the lifting device and swiveling traverse device, and the monitoring device enabled the search of the damaged position of the partition wall and the confirmation of the repair status from outside the furnace. Furthermore, by setting the bending dimension of the tip repair nozzle to the repair kiln size in advance, it is possible to perform spraying or spraying repair while keeping the distance between the repair nozzle tip and the repair wall constant, and in the case of vertical joint repair, use the lifting device. In the case of vertical joint repair and horizontal joint repair, it has become possible to perform continuous repair by moving horizontally with a swing traverse device.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an overall configuration diagram showing an embodiment of the present invention. The water-cooled tubular body 1 is configured to be vertically movable by an elevating device 4 and a chain 5 while being guided by guide rails 2 and guide rollers 3. The lifting device can also be lifted and lowered by a winch. Further, an ascending / descending method using a rack and gears can be easily considered. On the other hand, the guide rail 2 and the water-cooled tubular machine body 1 are vertically installed on the swivel table 6 and are configured to be swivel traverse by a swivel traverse device 7.

FIG. 5 is a sectional view taken along the line CC of FIG.
The arm 8, the guide roller 9 and the guide rail 10 are
This is a device for keeping the distance between the tip of the repair nozzle 14 and the repair partition wall 22 constant. The movement of the guide roller 9 is restricted by the guide rail 10. On the other hand, the truck 11 is a rail 1
The carriage 11 moves forward and backward along the shape of the guide rail 10 simultaneously with the rotation of the turning table 6, and the tip of the repair nozzle 14 can be moved to an arbitrary position depending on the shape of the guide rail 10. Become. Incidentally, in the present invention, turning and traverse can be operated by one driving device,
It is also possible to separately provide a traverse drive device and directly operate it.

FIG. 4 is a sectional view taken along the line BB of FIG.
The cross section of the combustion chamber 25 has a rectangular shape as shown in FIG. 4, and when the combustion chamber corner portion 27 is repaired, the swirling traverse device 7 can swivel the water-cooled tubular body 1 in the figure. At the same time, the guide rail 10 and the guide roller 9 can horizontally move the L dimension in the drawing. The guide rail 10 may have an arbitrary curvature depending on the shape of the repair partition wall 22. Generally, combustion chamber 2
The partition wall 22 for partitioning 5 and the carbonization chamber 28 is flat, and the guide rail 10 is formed by a straight line.

FIG. 2 is a partially enlarged sectional view of the bent portion 13 of FIG. The bent portion 13 has a large number of guide plates 13-2.
Are connected by articulation pins 13-3, and each articulation pin is rotatable in a fixed direction. The outer circumference is covered with the expansion tube 13-1, and the inside is filled with cooling water. Reference numeral 15 is a tension wire, which is arranged so as to be able to tension at a position eccentric from the center line connecting the joint joint pins 13-3. The tension wire 15 is bound with a part of the repair nozzle 14, and
It is possible to bend with a gentle curvature by tensioning. The tension wire 15 can be tensioned or relaxed by the bending drive device 20 shown in FIG. When the tension wire 15 is loosened, the repair nozzle 14
It can be extended to the vertical state by its own weight. Further, if one more tension wire is provided on the opposite side of the joint joint pin 13-3, more reliable pulling and pushing operation can be performed.

FIG. 3 is a sectional view taken along the line AA of FIG.
The tension wire 15 penetrates through the guide plate 13-2 and is supported so that the tension position does not shift.
In addition, in order to supply to the repair nozzle 14, the cooling water pipe 1
6, a thermal spray material pipe 17, an oxygen pipe 18, and a fuel pipe 19 are arranged. These pipes are composed of bendable and stretchable pipes such as rubber hoses. Reference numeral 21 in FIG. 2 is a monitoring device, which includes a fiberscope, a small TV camera, and the like, and is arranged in the water-cooled tubular body 1 at an angle such that the repair position can be monitored.

An operation example using this repair device will be shown. Coke oven combustion chamber inspection port 2 with the water-cooled tubular body 1 in the vertical state
Insert from 4. The location of the partition wall damage is searched for by vertical movement and turning movement. When the repair position is determined, the bending drive device 20 bends the tip end portion to fix the distance between the repair nozzle 14 and the repair partition wall 22 to perform spraying or spray repair. When the vertical joint is repaired, it is moved up and down by the lifting device 4. Further, in the case of the horizontal time, the turning and traversing device 7 horizontally moves and repairs. After the repair is completed, the repair state is confirmed by the monitoring device 21, the water-cooled tubular body 1 is extended, and the lifting device 4
Then, the water-cooled tubular body 1 is lifted and taken out of the furnace.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the gist of the present invention.

[0015]

As described above, according to the coke oven furnace wall repair apparatus of the present invention, (1) the repair time can be shortened, the coke oven down time can be shortened, and the productivity can be improved. To do. (2) Repair can be performed from the combustion chamber side, and repair can be performed over the entire partition wall. (3) It is not necessary to perform heavy-duty work in an atmosphere of high heat and high dust content, which can ensure worker safety and reduce labor. (4) Repair from the carbonization chamber side is unnecessary. (5) Since the repair is performed from the side of the combustion chamber, a strong adhesive force of the repair material can be obtained without being affected by the deposit such as carbon. (6) The coke can be repaired while the coke is held in the carbonization chamber, and the coke productivity is not affected. And so on.

[Brief description of drawings]

FIG. 1 is an overall view showing an embodiment of a coke oven furnace wall repairing apparatus according to the present invention.

2 is a partially enlarged sectional view of a bent portion 13 of FIG.

3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along the line BB of FIG.

5 is a sectional view taken along the line CC of FIG.

[Explanation of symbols]

1 ... Water-cooled tubular body 2 ... Guide rail 3 ... Guide roller 4 ... Elevating device 5 ... Chain 6 ... Revolving table 7 ... Revolving traverse device 8 ... Arm 9 ... Guide roller 10 ... Guide rail 11 ... Cart 12 ... Rail 13 ... Bend Part 13-1 ... Telescopic tube 13-2 ... Guide plate 13-3 ... Articulating joint pin 14 ... Repair nozzle 15 ... Tension wire 16 ... Cooling water piping 17 ... Thermal spray material piping 18 ... Oxygen piping 19 ... Fuel piping 20 ... For bending Drive device 21 ... Monitoring device 22 ... Partition wall 23 ... Coal charging port 24 ... Combustion chamber inspection port 25 ... Combustion chamber 26 ... Partition wall 27 ... Corner part 28 ... Carbonization chamber

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroshi Otani Hiroshi Otani 59 Nippon Steel at 46 Nakahara, Tobata-ku, Kitakyushu City Plant Design Co., Ltd. Within Plant Design Co., Ltd.

Claims (1)

[Claims] 1. A monitoring device and a spraying or spraying repair nozzle are built-in, the tip bending portion is made into a multi-joint, the outer peripheral portion is covered with a telescopic tube, and tension is applied at a position eccentric from the center line connecting the multi-joint joint pins. A coke oven characterized in that a water-cooled tubular machine body provided with a wire is provided with an elevating device and a swivel traverse device that are inserted into a coke oven combustion chamber inspection port to elevate and lower the machine body, and can be operated from outside the furnace. Furnace wall repair device.