JPH0826320B2 - Coke oven spray repair device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Object of the Invention" (Field of Industrial Application) The present invention relates to a repair device for a coke oven carbonization chamber.

(Prior Art) The chamber furnace type coke manufacturing furnace is capable of mass production as a metallurgical coke manufacturing furnace, quality control is easy to carry out, and the enormous amount of heat used is relatively effectively utilized. It is widely adopted because it is used.

However, since carbonization of coal is an indirect heating through the side wall of the brickwork, the coke and the brick are fused by long-term use, or the side wall of the brickwork collapses, the side wall part is damaged during kiln removal, etc. Therefore, it is said that the normal reactor life is about 20 years.

Since the transshipment of bricks in a coke oven requires enormous cost and time, considerable proposals have been made for hot repair methods for coke ovens, and they are being put into practical use, although they are small.

For example, a spraying burner is provided at one end of a water-cooled long cylinder having a supply pipe for combustible gas, oxygen and refractory powder inserted therein, and an operation handle is provided at the other end to roll the water-cooled long cylinder on a support frame. It can be freely inserted and inserted, and it can be tilted and swiveled on a movable carriage. Japanese Patent Laid-Open No. 53-82802, which is a cassette-type thermal spray repair machine, which has a powder thermal spray nozzle that can move up and down on one side of a trolley, and a heat source gas cylinder, powder hopper, etc. on the other side. Characteristic Kaikaisho
No. 53-86455, a thermal spray burner is mounted on a carriage so that it can be moved up and down and moved forward and backward, and the thermal spray burner is suspended and supported by a chain from a charging hole at the top of the furnace through a hoisting machine. Etc. are known.

(Problems to be Solved by the Invention) As described above, the hot repair equipment of the coke oven carbonization chamber that has been conventionally used is the operator's hand while visually confirming the range of 1 to 2 m from the kiln mouth. Most of the work is done by inserting the boom into the center of the furnace, and after confirming the position to be repaired, a device for repairing a wide area accurately and efficiently, especially the structure of the boom tip, has not been developed yet. It has not been.

In view of such a current situation, the applicant of the present patent has already applied for an invention that enables repair up to the central portion of the furnace as Japanese Patent Application No. 63-251973. According to the invention, a monitoring camera and a thermal spray burner are provided in a water-cooled box attached to the tip of a long boom that reaches the center of the carbonization chamber of a coke oven, and an air hammer is attached to the tip to separate the deposits on the furnace wall. And a thermal spray repair device. However, the Japanese Patent Application No. 63-251973 mentioned above, unlike most other thermal spray repair devices, is a device that allows hot repair by inserting the boom tip into the center of the carbonization chamber, but it is a surveillance camera. Despite the fact that the thermal spray burner was installed with the axis center offset by 90 °, it was recognized that the heat-resistant glass for protection of the surveillance camera was exposed to the rebound material of the thermal spray material.

The invention of the present application was created as an improvement of Japanese Patent Application No. 63-251973, and provides a device for improving the workability of thermal spraying by separating the thermal spray burner from the position of the surveillance camera without being exposed to the rebound material. The purpose is to do.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present inventors have directed an air hammer and a thermal spray burner in opposite directions to the outer tip of a water-cooling box containing a surveillance camera. The coke oven thermal spray repair device is characterized in that the measurement field of view of the surveillance camera is in the same direction as the air hammer. In the case of the device of the present invention, the thermal spray burner is directed outside the water-cooled box in the direction directly opposite to the field of view of the monitoring camera, so that the temperature rise of the water-cooled box can be prevented and the monitoring can be performed. The field of view of the camera is not obstructed by the rebound material, nor is the thermal spray material attached to the burner tip.

(Operation) In the present invention, since the thermal spray burner is brought out to the outer distal end portion from the water cooling box attached to the tip of the boom, the distal end portion of the thermal spray burner is water cooled as in the preceding invention described above. Adhesion of thermal spray material, rebound material due to the narrow gap between the burner tip and furnace wall, etc. have been improved, and the field of view caused by the deviation of the field of view of the surveillance camera from the spray axis of the thermal spray burner by only 90 °. Since the field of view of the surveillance camera (measurement direction) and the spraying axis of the burner are separated by 180 ° (exactly opposite direction), both distances and directions will be separated. Is gone. Further, by ejecting the thermal spray burner from the water cooling box to the outer tip portion, the distance from the front end portion of the burner to the furnace wall is widened, and the thermal spray distance can be accurately controlled. Moreover, since the corners of the water cooling box are cut so that the thermal spraying agent from the thermal spraying burner does not easily adhere to the water cooling box, it is possible to save labor in maintenance of the apparatus.

(Embodiment) FIG. 1 shows an embodiment of the present invention. An air hammer 3, a thermal spray burner 4, a surveillance camera 5 and the like are provided in a water cooling box 2 attached to the tip of a boom 1. It is an explanatory view showing that.

Since the water cooling box 2 is fixed to the main pipe 6 arranged at the center of the boom 1, the boom can be freely rotated while the air hammer 3 and the thermal spray burner 4 are fixed. Be punished. Thermal spray burner 4
Is a refractory material and propane gas supply pipe 7, oxygen supply pipe 8,
A burner water pipe 9 and a burner drain pipe 10 are connected. Although not shown in the drawing, an air pipe 11 is connected to the air hammer 3. The surveillance camera 5 is provided with a heat resistant glass 12, and an air outlet 13 is provided to maintain a good visual field. The surveillance camera 5 is provided with four lights 14. As is apparent from this drawing, the field of view of the surveillance camera 5 and the operating axis of the air hammer 3 are arranged so as to face the same direction, and the blowing axis of the thermal spray burner 4 is in the opposite direction to the field of view of the surveillance camera. (180 °), the distance between them is set so that there is no effect of the rebound material.

Further, when the spray axis of the spray burner 4 is sprayed at 90 ° from the center to the wall surface of the furnace, there is a large amount of splash that rebounds. Therefore, the spray axis is arranged at a slight angle, and as shown in the figure, a water cooling box is also provided. The tip of the thermal spray burner 2 is cut off at a corner so that the rebound material does not easily adhere thereto. In this embodiment, the burner axis is 5
It is installed with an inclination of °.

FIG. 2 is a sectional view taken along the line AA in FIG. Although various feed pipes are shown, in addition to the above-mentioned pipes, a cooling water inlet 15, a cooling water outlet 16, a camera cable conduit 17, in the water cooling box 2,
A water cooler 18 is shown.

FIG. 3 is a view of FIG. 1 seen from the left side. The outer layer of the lower side of the water cooling box 2 is covered with a fireproof coating 19, and the upper half and the lower half of the water cooling box 2 are cooling water connecting pipes.
It is shown that they are connected by 20 and that the spraying direction of the thermal spray burner 4 and the operating axis of the air hammer 3 are in opposite directions.

"Effect of the invention" As described in detail above, when the apparatus of the method of the present invention is used for hot repair of a coke oven, the spray nozzle is placed outside the water-cooling box, and the direction of the spray-spray axis is also monitored. Since the field of view of the camera for use is provided on the completely opposite side, the rebound material does not adhere to the burner tip or the field of view of the camera is not obstructed by the rebound material, and the tip position of the spray burner and the furnace wall to be repaired Since it became possible to widen the interval, the range of choice of spraying conditions increased.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an essential part of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a left side view of FIG. 1: Boom, 2: Water cooling box 3: Air hammer, 4: Thermal spray burner 5: Surveillance camera, 6: Main pipe 7: Refractory and propane gas supply pipe 8: Oxygen supply pipe, 9: Burner water pipe 10: Burner drain pipe, 11: Air pipe 12: Heat-resistant glass, 13: Air outlet 14: Lighting 15: Cooling water inlet (for water cooling box) 16: Cooling water outlet (for water cooling box) 17: Camera cable conduit 18: Water cooling zone

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masatoshi Mizusawa, Masatoshi Mizusawa 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. In-house (56) Reference JP 60-18572 (JP, A) JP 58-206682 (JP, A) JP 2-99591 (JP, A) JP 2-99592 (JP, A) )

Claims (1)

[Claims] 1. An air hammer and a thermal spray burner are arranged in opposite directions at the outer tip of a water-cooled box containing a surveillance camera, and the measurement field of view of the surveillance camera is in the same direction as the air hammer. Coke oven spray repair device characterized by