JP4291943B2 - Coke oven observation and repair equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an observation and repair apparatus for a coke oven capable of observing and repairing a damaged portion generated in a combustion chamber near a rising pipe portion of the coke oven.
[0002]
[Prior art]
Conventionally, as shown in FIG. 5, the coke oven 40 is provided with a coal storage device 41 for supplying coal to the carbonization chamber 42 in the vicinity of the center of the coke oven 40, and on both sides of each carbonization chamber 42 in the furnace width direction. Composed of 20 to 30 chambers, each having a combustion chamber 44 having a flue hole 43, and 50 to 60 gates are arranged with the combination of the carbonization chamber 42 and the combustion chambers 44 on both sides thereof as one gate.
The carbonization of the coal charged into the carbonization chamber 42 is performed by indirectly transferring heat from the combustion chamber 44 to the coal in the carbonization chamber 42 through the wall.
Furthermore, the coke oven gas (dry distillation gas) generated in the carbonization chamber 42 is exhausted by the rising pipe 45 provided at one end of the carbonization chamber 42 to promote the carbonization of coal and recover the by-products. Is going.
The carbonizing chamber 42 and the combustion chamber 44, which are the main parts of the coke oven 40, are made of refractory bricks, and in addition to the use conditions with large temperature changes, many of them have passed 30 to 40 years since construction, In the refractory brick constituting 44, joint breakage occurs, and further, a crack that is conducted from the combustion chamber 44 to the carbonization chamber 42 also occurs.
As a result, generation of black smoke due to leakage of dry distillation gas from the carbonization chamber 42 to the combustion chamber 44, loss due to combustion of the coke oven gas, and infiltration of coal due to intrusion of combustion exhaust gas from the combustion chamber 44 into the carbonization chamber 42 Oxidation occurs.
Furthermore, if the joints and cracks of the refractory bricks are left untreated, the refractory bricks are lost or dropped with the heat load, rapidly deteriorating and the life of the coke oven is greatly reduced.
As a countermeasure, as described in Japanese Examined Patent Publication No. 7-45666, a movable carriage that can run in the longitudinal direction of the coke oven is provided on a rail provided on the upper surface (upper part) of the coke oven. The moving carriage is provided with an elevating carriage and an elevating guide that run in the longitudinal direction of the carbonization chamber, and a lance with a built-in TV camera is raised and lowered into the combustion chamber via the elevating guide to image defects on the wall surface. Plasma spraying is performed from the inside of the carbonization chamber to the repair site by moving up and down a repair lance equipped on another moving carriage that travels in the same manner on the upper part of the coke oven.
Furthermore, as described in Japanese Patent Publication No. 7-45667, a lance incorporating a furnace observation device and a refractory spraying device is inserted into the combustion chamber of the coke oven, and the spraying device is applied to the observed damaged portion. Plasma spraying is performed using a nozzle.
[0003]
[Problems to be solved by the invention]
However, in the methods described in Japanese Patent Publication No. 7-45666 and Japanese Patent Publication No. 7-45667, the riser pipe provided in the carbonization chamber of the coke oven becomes a hindrance when the carriage traveling in the longitudinal direction of a normal coke oven is an obstacle. For example, the lance cannot be inserted into the flue hole in the range indicated by the oblique lines in FIG. 5, and there is a portion where the inner wall of the combustion chamber cannot be observed and repaired.
As a countermeasure, it is conceivable to observe and repair from the carbonization chamber side, but the wall of the carbonization chamber has a tendency to protrude inside, and further, repairing such as thermal spraying of refractory material and forming a convex part In addition, the extrusion resistance increases at the time of extruding coke that has undergone dry distillation, and in extreme cases, extrusion failure occurs, leading to a decrease in productivity and trouble in operation.
Further, since cracks and joint breaks occurring in the combustion chamber cannot be sufficiently repaired, there is a problem that the coke oven deteriorates and the service life is shortened, so that the cost of renewing the coke oven is high.
[0004]
The present invention has been made in view of such circumstances, and the coke that can extend the life of the coke oven by avoiding obstacles on the coke oven and observing and repairing the entire combustion chamber of the coke oven. It aims at providing the observation repair equipment of a furnace.
[0005]
[Means for Solving the Problems]
The observation and repair device for a coke oven according to the present invention that meets the above-described object is provided with a traversing carriage that runs in the furnace width direction on a running carriage that is disposed on the furnace of the coke oven and runs on a rail installed in the furnace length direction. In the observation and repair device for observing and repairing the coke oven by raising and lowering the lance by providing a lifting carriage for the lance on the traversing carriage, and raising and lowering the lance in the lifting guide. A carriage extension unit that guides and runs the transverse carriage in the furnace width direction is detachably connected to the traveling carriage.
Thereby, when repairing a combustion chamber, a cart extension unit and a traveling cart can be easily connected. Then, the traversing cart travels from the traveling cart on the cart extension unit, and for example, it is possible to observe and repair the flue hole that cannot be normally observed or repaired due to an obstacle in the riser, thereby extending the life of the coke oven. be able to.
In addition, since the carriage extension unit can be easily attached and detached in a short time, it is possible to avoid problems with normal coke oven operation, and work efficiency is improved.
[0006]
Here, the base end side frame of the carriage extension unit may be fitted into a receiving groove provided in the traveling carriage and fixed by pin insertion.
Since the end of the frame on the base end side of the carriage extension unit is fitted in the receiving groove provided at the tip of the carriage base, the pin is inserted and fixed, and the carriage extension unit and the carriage are connected. It can be easily attached and detached, and the working time can be greatly reduced. Moreover, during normal operation, the cart extension unit can be placed in a range that does not hinder work.
[0007]
Furthermore, it is preferable to provide a tilting device for the lance on the traversing carriage.
Obstructions such as a coal storage device on the coke oven can be avoided to facilitate movement, and the combustion chamber in the longitudinal direction of the coke oven can be observed and repaired.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
FIG. 1 is an overall view of a coke oven observation repair apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of a connecting portion between a traveling carriage and a carriage extension unit of the observation repair apparatus, and FIG. 3 is the observation repair apparatus. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 1.
As shown in FIG. 1, a coke oven observation / repair device 10 according to an embodiment of the present invention includes a traveling carriage 13 that runs on rails 12 a and 12 b laid on a longitudinal furnace of a coke oven 11. A carriage extension unit 29 that can be connected to the traveling carriage 13, a traversing carriage 14 that travels on the traveling carriage 13 in the width direction of the coke oven 11, a lifting guide 16 attached to the traveling carriage 14, and the lifting guide 16 An elevating carriage 17 is provided that moves up and down while holding a water cooling lance 15 for observation, which is an example of a lance.
The traveling carriage 13 supports a gantry 18 assembled on a rectangular flat base by connecting square bars (frames) made of steel, and supports the wheels 20a and 20b on the lower ends of the pedestals 19, and is illustrated. It is provided to run on the rails 12a and 12b by a drive device such as an electric motor that does not.
The traversing carriage 14 is provided with a steel carriage main body 23 that travels on a rail 21 laid on the traveling carriage 13 by wheels 22 connected to a drive source (not shown). A tilting table 24 (an example of a tilting device) that is tilted by expansion and contraction of a hydraulic cylinder that is generally used is attached, and a lifting guide 16 that guides the lifting of the water-cooled lance 15 for observation is attached to the tilting table 24. Is provided.
The raising / lowering guide 16 has a guide frame 25c composed of a steel frame 25a and a frame 25b assembled by facing a grooved steel (U-shaped steel) groove (not shown), and sprockets 22a at the upper and lower ends of the guide frame 25c. 22b is attached.
A chain 26 as an example of a rack is engaged with and connected to the sprockets 22a and 22b to form an endless track. When the lift 26 is fixed to the chain 26 that moves in the frame 25a and the counterweight 27 is fixed to the chain 26 that moves in the opposite frame 25b, the lift 17 is located above the lift guide 16. In addition, the counterweight 27 is arranged downward.
[0009]
Further, the elevator carriage 17 is provided with wheels 27a and 27b that are fitted in a groove (not shown) provided in the frame 25a and are pivotally supported by the elevator carriage 17. When the elevator carriage 17 moves up and down, the wheels 27a 27b moves up and down in the groove of the frame 25a while rotating in contact with the groove of the frame 25a.
The lance head 28 of the observation water-cooled lance 15 held by the lift carriage 17 is connected to a swirling device (not shown) for turning the lance head 28 and a cooling water, signal cable, and purge gas supply system. A ring is provided.
The carriage extension unit 29 joined to the traveling carriage 13 has the same width as the gantry 18 of the traveling carriage 13 and has a structure in which the length of the coke oven 11 in the width direction is 3 to 5 m. 4, bifurcated portions 32 a and 33 b provided on the base end side of the frame 32 of the upper unit and the frame 33 of the lower unit of the cart extension unit 29 are the upper end portions of the base 18 of the traveling cart 13. Pin holes 34a respectively fitted into a U-shaped receiving groove 30 provided in 18a and a U-shaped receiving groove 31 provided in the lower tip 18b and respectively bored in the receiving groove 30, the forked portion 32a and the upper tip 18a. , 34c, 34e, and the receiving groove 31, the bifurcated portion 33b, and the lower end portion 18b are polymerized into pin holes 34b, 34d, and 34f, respectively, and the pin 35 is inserted, whereby the cart extension unit 9 and frame 18 of the traveling carriage 13 is fixed.
A rail 21 a that travels and guides the wheels 22 of the traversing carriage 14 is provided on the upper surface of the carriage extension unit 29.
Further, the lifting carriage 17 can be provided with a water cooling lance for repair (not shown) instead of the water cooling lance 15 for observation described above. In this case, the lifting guide 16 and the lifting guide used for the water cooling lance 15 for observation are provided. The tilting base 24 that tilts 16 and the chains 26 attached to the sprockets 22a and 22b respectively provided above and below the lifting guide 16 can be used as they are.
As a water-cooled lance for repair, a refractory material and propane gas and oxygen supply lines are connected to the lance head via couplings, respectively. It is inserted into the hole 37 so as to turn and move up and down.
Reference numeral 36 denotes a riser pipe provided on one end side of the carbonization chamber for exhausting dry distillation gas generated in the carbonization chamber.
[0010]
Next, the operation of the coke oven observation and repair apparatus 10 according to one embodiment of the present invention will be described.
The traveling carriage 13 is run on the rails 12a and 12b laid on the furnace in the longitudinal direction of the coke oven 11, and the center of the running carriage 13 is adjusted to the position of the flue hole row (usually 20 to 30 pieces). The carriage 13 is stopped.
Thereafter, the water cooling lance 15 for observation is aligned with the flue hole 37 where the traversing carriage 14 is moved in the width direction of the coke oven 11 and observation is performed.
When the positions of the flue hole 37 and the water cooling lance 15 are determined, the electric motor is driven to rotate the sprockets 22a and 22b to send the endless track-shaped chain 26 to lower the lifting carriage 17 and simultaneously held by the lifting carriage 17. The water cooling lance 15 is lowered to stop the water cooling lance 15 at a predetermined depth.
At this time, the counterweight 27 rises the same distance as the descending distance of the lifting carriage 17 and stops.
Then, a CCD camera (not shown) built in the water-cooled lance 15 is used to observe the presence or absence of cracks or joint breaks occurring on the surface in each of the flew holes 37 of the flew hole array provided in the width direction of the coke oven 11.
In the vicinity of the ascending pipe 36, the elevating carriage 17 attached to the traversing carriage 14 interferes with the ascending pipe 36, and the observation water-cooled lance 15 is placed in the two to four flue holes 37 on the PS (coke extrusion) side. Therefore, when observing the inside of the flue hole 37 of the combustion chamber 11, the ascending pipe 36 is separated from the flange portion (not shown) and removed from the main body of the coke oven 11.
And the forked part 32a, 33b provided in the base end side of the cart extension unit 29 provided with the rail 21a on the upper surface is formed in the receiving groove 30 of the upper tip portion 18a and the receiving groove 31 of the lower tip portion 18b of the traveling carriage 13. The rails 21 and 21a are connected by fitting and fixing the pins 35.
The traversing carriage 14 that has traveled on the rail 21 of the gantry 18 is connected to the rail 21a of the carriage extension unit 29 and is close to the flew hole 37 where the ascending pipe 36 has become an obstacle and cannot be observed. Similarly to the above observation, the elevating carriage 17 is lowered to stop the water-cooled lance 15 at a predetermined position of the flue hole 37, and it is possible to observe the presence or absence of cracks or joints generated on the surface of the flue hole 37.
[0011]
The carriage extension unit 29 removes the pin 35 inserted into the bifurcated portions 32a and 33b and the receiving grooves 30 and 31 when the observation is not performed in the flue hole 37 in the vicinity of the ascending pipe 36 that becomes an obstacle, and the crane extension unit 29 Remove the trolley extension unit 29 using and place it in a place where it will not interfere with normal operation. When the need arises, it can be transported onto the coke oven 11 using a crane or the like and connected to the traveling carriage 13. By turning the lance head 28 and changing the direction of the water-cooled lance 15 in the clockwise and counterclockwise directions around the axis in the range of 0 to 180 °, the inside of the flew hole 37 in the range of 360 ° is observed. be able to.
In addition, by tilting the water-cooling lance 15 by tilting the elevating carriage 17 connected with the water-cooling lance 15 by the tilting base 24, it is possible to avoid the height restriction of the coal storage device for charging the coke oven 11 and the like. .
[0012]
In addition, the observation in the flue hole 37 by the observation water cooling lance 15 using the cart extension unit 29 has been described. However, the observation water cooling lance 15 is removed, and the refractory material, propane gas and oxygen supply paths are respectively provided. A repaired water-cooled lance connected via a coupling and equipped with a lance head can be mounted on the lifting carriage 17 for repair.
In this repair, the carriage extension unit 29 provided with the rail 21 a is fixed to the base 18 of the traveling carriage 13 in the same manner as the observation in the flue hole 37 described above, and the traversing carriage 14 is fixed on the rail 21 a of the carriage extension unit 29. , And the elevator 17 is moved down in the vicinity of the flew hole 37 that could not be repaired due to an obstacle, and the water cooling lance for repair is stopped at a predetermined position of the flew hole 37, and the refractory By spraying or the like, it is possible to repair cracks and joints generated on the surface of the flue wall.
[0013]
Thus, by providing the carriage extension unit 29 in the traveling carriage 13 so as to be detachable, the obstacle on the coke oven 11 can be avoided in a short time and using a simple structure, and the combustion chamber of the coke oven 11 can be prevented. The entire observation and repair can be performed, and the life of the coke oven 11 can be extended.
[0014]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions and the like that do not depart from the gist are within the scope of the present invention.
For example, two elevating guides and elevating trolleys are installed in a traverse carriage, a water-cooled lance for observation and a water-cooled lance for repair are placed, and a trolley extension unit is installed to observe and repair the full hole of the coke oven. be able to.
Furthermore, it is also possible to perform observation and repair separately by using traversing carts mounted on different traveling carts, and providing each traversing cart with a water cooling lance for observation and a water cooling lance for repair.
[0015]
【The invention's effect】
In the observation and repair apparatus for a coke oven according to claims 1 to 3, a traversing carriage that runs in the furnace width direction is placed on a running carriage that is disposed on the furnace of the coke oven and runs on a rail installed in the furnace length direction. In the observation and repair equipment that mounts and installs a lance lifting carriage on the traversing carriage, and the lance lifting carriage moves up and down in the raising and lowering guide to observe and repair the coke oven. Since the cart extension unit capable of guiding travel in the width direction is detachably connected to the running cart, the cart extension unit can be attached and detached in a short time so as not to hinder normal coke oven operation. It becomes possible to observe and repair the combustion chamber in the vicinity of the riser pipe, which cannot be normally observed or repaired, and to improve the coke oven life and work efficiency.
[0016]
In particular, in the observation and repair device for the coke oven according to claim 2, since the base end side frame of the carriage extension unit is fitted in the receiving groove provided in the traveling carriage and is pin-fixed, it can be easily attached and detached. This can be done and the working time can be greatly reduced. In addition, the cart extension unit can be arranged in a range that does not hinder work during normal operation.
[0017]
In the coke oven observation repair apparatus according to claim 3, since the trolley tilting device is provided on the traversing carriage, obstacles such as a coal storage device on the coke oven can be avoided, and the entire combustion chamber in the longitudinal direction of the coke oven Can be observed and repaired, and the life of the coke oven can be extended stably.
[Brief description of the drawings]
FIG. 1 is an overall view of a coke oven observation and repair device according to an embodiment of the present invention.
FIG. 2 is a perspective view of a connection portion between a traveling carriage and a carriage extension unit of the observation repairing apparatus.
FIG. 3 is a plan view of a connection portion between a traveling carriage and a carriage extension unit of the observation repairing apparatus.
4 is a cross-sectional view taken along the line AA of FIG.
FIG. 5 is a plan view of a conventional coke oven.
[Explanation of symbols]
10: coke oven observation and repair device, 11: coke oven, 12a, 12b: rail, 13: traveling carriage, 14: traversing carriage, 15: water cooling lance, 16: lifting guide, 17: lifting carriage, 18: mount, 18a : Upper tip, 18b: lower tip, 19: support, 20a: wheel, 20b: wheel, 21: rail, 21a: rail, 22: wheel, 22a: sprocket, 22b: sprocket, 23: bogie body, 24 : Tilting table, 25a: Frame, 25b: Frame, 25c: Guide frame, 26: Chain, 27: Counterweight, 27a: Wheel, 27b: Wheel, 28: Lance head, 29: Dolly extension unit, 30: Receiving groove 31: receiving groove, 32: unit frame, 32a: bifurcated portion, 33: unit frame, 33b: bifurcated portion, 34a: pin hole, 34b: pin , 34c: pin hole, 34d: Pin hole 34e: pin hole, 34f: pin hole, 35: Pin, 36: riser, 37: flue hole

Claims (3)

A traversing carriage traveling in the furnace width direction is mounted on a traveling carriage that is disposed on the furnace of the coke oven and travels on a rail installed in the furnace length direction, and a lifting trolley for the lance is provided on the transverse carriage. In the observation and repairing apparatus for observing and repairing the coke oven by raising and lowering the lance by moving the lance elevating carriage up and down in the elevating guide, a carriage extension unit capable of guiding and running the transverse carriage in the furnace width direction An observation and repair device for a coke oven, which is detachably connected to the traveling carriage. 2. The coke oven observation repair apparatus according to claim 1, wherein a frame on a proximal end side of the carriage extension unit is fitted into a receiving groove provided in the traveling carriage and is pinned and fixed. Observation repair equipment. 3. The coke oven observation repair apparatus according to claim 1, wherein the trolley tilting device is provided on the traversing carriage.

Images