JPH0299592A - Apparatus for mending coke oven by melt spraying - Google Patents

Abstract

PURPOSE:To surely search the damaged part in an oven irrespective of its position and perform the mending of the part in a short time by putting a functional members such as melt-spray burner and a monitor camera, etc., in water-cooled box and detachably attaching the box at the tip end of a boom. CONSTITUTION:A melt-spray burner 1 is connected with a pipe 2 for feeding refractory powder material and propane gas, an oxygen pipe 3, a water- supplying pipe 4 for the burner and a water-discharging pipe 4' for the burner. A monitor camera 5 is fixed keeping the center line 90 deg. away from the axial line of the spray burner 1 and connected to a camera cable piping 6. An air hammer 7 is provided in such a manner as to expose the tip end from the water-cooled box to construct the objective melt-mending apparatus for a coke oven.

Description

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

(Prior art) As a furnace for producing metallurgical coke, the room-furnace coke oven carbonization chamber is capable of mass production, is easy to carry out quality control, and is relatively effective in using a huge amount of heat. It has been widely adopted because it is widely used.

However, since coal carbonization is indirect heating through the side walls of brickwork, long-term use may cause coke to fuse with the bricks, collapse of the brickwork side walls, or damage the side walls when taken out of the kiln. Therefore, the life of a normal reactor is said to be about 20 years.

Since reloading bricks in a coke oven requires a huge amount of money and time, many proposals have been made for hot repair methods for coke ovens, and they are being put into practical use, albeit on a small scale.

For example, a thermal spray burner is provided at one end of a water-cooled long cylinder into which a supply pipe for combustible gas, oxygen, and refractory powder is inserted, and an operating handle is provided at the other end, so that the aforementioned water-cooled long cylinder can be freely moved to a support frame. Utility Model No. 5236703, which was installed on a movable trolley so that it could tilt and rotate freely, and a repair burner was removably attached to a coke guide car or a butcher car.
Japanese Patent Application Laid-Open No. 53-82802, which is a center type thermal spraying repair machine with a burner that can be moved forward and backward, rotated, and tilted freely, 1 on a trolley
Utility Model No. 5386455, which features a powder spray nozzle that can be moved up and down on one side, and a heat source gas cylinder, powder popper, etc. on the other side, and a thermal spray burner that is mounted on a trolley so that it can move up and down and back and forth. Also known is Utility Model Laid-Open No. 61-159345, in which the thermal spray burner is suspended and supported by a chino via a hoisting machine from a charging hole at the top of the furnace.

(Problems to be Solved by the Invention) As mentioned above, the hot repair equipment for the coke oven carbonization chamber that has been implemented in the past requires the operator to manually inspect a range of 1 to 2 meters from the kiln mouth while checking with the naked eye. In most cases, this is done by inserting the boom into the center of the furnace, confirming the location to be repaired, and using equipment to accurately and efficiently repair a wide area, especially for the structure of the boom tip. has not been developed yet.

The present invention was created in view of the current situation, and
Our goal is to provide a device that can safely and accurately repair the entire area inside the kiln, especially regarding the structure and function of the water-cooled box at the tip of the boom that houses major equipment such as surveillance cameras and thermal spray burners. do. A description of the structure of the truck and boom in the repair device will be omitted.

"Structure of the Invention" (Means for Solving the Problems) In order to achieve the above-mentioned object, the present inventors housed the functions necessary for thermal spraying, such as a thermal spray burner and a surveillance camera, in a water-cooled box, and installed a boom. We propose a coke oven thermal spray repair device that is characterized by a removable installation at the tip. By using this device, it is possible to accurately locate damaged locations anywhere within the kiln and repair them in a short time.

(Function) In order to reliably repair the center of the carbonization chamber, it is naturally necessary to use a long boom, but the most important thing is to reliably find the area to be repaired and to check it after repair. The problem is how to protect the equipment from the heat inside the kiln without reducing its functionality, such as monitoring cameras that can be used for inspection and thermal spray burners for repair purposes. The water cooling box is attached to the end of the boom. In the present invention, the equipment necessary for thermal spraying is housed in a removable water-cooled box separate from the boom, and when a burner is replaced with a burner suitable for repair work or when something goes wrong, it is possible to immediately replace the burner with a spare one. It can be replaced with a water cooling box.

Furthermore, the optical axis of the surveillance camera and the axis of the thermal spray repair burner were positioned inside the water-cooled box with a 90" shift, which enabled us to successfully reduce the volume of the water-cooled box and ensure sufficient water cooling. , and the distance from the side wall of the kiln to the water cooling box was made as far as possible.Furthermore, the air that is blown into the main pipe and the water cooling box from the rear end of the boom for cooling is routed to the front of the monitoring camera. In order to prevent the camera field of view from being obstructed by the adhesion of dust generated by spraying onto heat-resistant glass, the cooling water for the water-cooled box is used to cool the inside of the boom. The water-cooled box of the present invention can be advanced to the center of the coke oven because it is transferred to the tip without being exposed to external heat along with the piping for the thermal spraying material. It can be attached to the tip of a boom.

(Example) FIG. 1 is a plan view showing the arrangement of equipment in a water-cooled box. The thermal spray burner 1 is connected to a supply pipe 2 for refractory powder material and propane gas, an oxygen pipe 3, a burner water pipe 4, and a burner drain pipe 4'.

The monitoring camera 5 is mounted 90° offset from the axis of the thermal spray burner, and connected to a camera cable piping 6. The tip of the air hammer 7 is provided outside the water cooling box.

FIG. 2 is a diagram showing the arrangement of equipment when the previous viewpoint is moved by 90 degrees so that the axis of the surveillance camera 5 is parallel to the plane of the paper. The heat-resistant glass 8 on the front of the camera is designed so that the main pipe and the cooling air in the water cooling box are exhausted from the air outlet 9, and the view is obstructed by the adhesion of powder caused by thermal spraying. It is designed so that it will not be damaged. Third
The drawing is a sectional view taken along line A-A in FIG. 1, showing a supply pipe for materials necessary for thermal spraying and a cable storage pipe to be supplied into the water-cooled box at the tip of the boom.

Propane gas and refractory powder supply pipe 20A: 2, camera cable pipe 20A: 6, tip box cooling water supply pipe 15A: 10, tip box cooling water drain pipe], 5
A: 11, Air pipe for air hammer 15A: 12, Water pipe for thermal spray burner 10A: 4, Drain pipe for thermal spray burner 10
A: 4' and burner oxygen piping 15A: 3 are shown.

The water cooling box can be attached and detached in the following manner. As shown in FIG. 3, the water cooling box is formed of two halves 13a and 13b, which are connected by bolts 14 shown in FIG. The piping connection part 15 and cable connection part 16 in the water cooling box shown in FIGS. 1 and 2 have a screw structure so that they can be easily attached and detached. Although other piping is not shown, it has a similar structure. The water-cooled box mounting is connected to the main pipe 17 extending inside the boom to the tip by bolts 18, and the direction of the camera and burner of the water-cooled box can be freely rotated by a hydraulic motor at the rear end of the boom. be. Therefore, to remove the water cooling box and the tip inside the box, remove the bolt 14, and to install the water cooling box, remove the bolt 18, then remove the two split cases 13a and 13b of the water cooling box, and remove the screws for the piping connection 15 and cable connection 16. By opening the tip, the tip can be easily replaced.

In addition, in FIGS. 1 and 2, 19 indicates an illumination, and in FIG. 3, 20 is formed in a water cooling area when the two split cases 13a and 13b are combined.

"Effects of the Invention" As detailed above, in the case of the apparatus of the present invention, equipment essential for thermal spray repair, such as a surveillance camera and a spray burner, can be kept in a sufficiently cooled state and can be attached and detached at the tip of the boom. Since it is attached to the top of the boom, it is possible to carry out hot repairs of the coke oven carbonization chamber accurately and efficiently, and in the event that an abnormality occurs at the tip of the boom, the water cooling box and tip can be removed in a short time. Replacement is possible.

[Brief explanation of drawings]

Figure 1 shows the layout of the equipment inside the water-cooled box, mainly the thermal spray burner, Figure 2 shows the layout of equipment inside the water-cooled box, mainly the monitoring camera, shifted by 90', and Figure 3 shows the layout of the equipment inside the water-cooled box, mainly the monitoring camera. A sectional view taken along the line A-A in FIG. 1 is shown. 1: Thermal spray burner 2: Refractory material and propane gas supply pipe 3: Oxygen pipe 4: Burner water pipe 4': Burner drain pipe 5: Surveillance camera 6: Camera cable piping 7: Air hammer 8: Heat-resistant glass
9: Air outlet 10: Water cooling box water pipe 11: Water cooling box drain pipe 12: Air hammer air pipe 13a; Split case 13b = Split case 14: Bolt 15: Piping joint 16: Cable joint 17: Main pipe 18 : Water cooling box installation is done with bolts.

Claims (1)

[Claims] A coke oven thermal spray repair device that houses the necessary functions for thermal spraying, such as a thermal spray burner and a surveillance camera, in a water-cooled box, and is detachably installed at the tip of the boom.