JP4825839B2 - Cork guide car cage - Google Patents

Description

  The present invention relates to an improvement in a cage for a coke guide car provided in a coke guide car that guides coke pushed out from a coking chamber of a coke oven to a fire extinguisher.

  Coke produced by dry distillation of raw coal in the carbonization chamber of the coke oven is pushed out of the chamber by a ram beam (extrusion bar) of the extruder. In order to guide the coke to be pushed out to a fire extinguisher, a coke guide car is used that moves forward and backward along the rail in the direction in which the coking chambers of the coke oven are arranged.

  The coke guide wheel is provided with a cage (lattice) serving as a coke discharge path. The cage for the coke guide car is rotatably held by a wheel holding member fixed to the support frame of the cage and travels in contact with a machine frame (long steel material) provided on the upper part of the coke guide car. The coking guide wheel supports the carbonization chambers so as to be able to advance and retreat through suspension wheels.

  The cage for a coke guide car is provided with a pair of left and right guide plates (flat plates) that are supported by the support frame in a standing state substantially parallel to each other and form a guide path for coke that is pushed out from each carbonization chamber to the outside. .

The function of the pair of guide plates will be described in detail together with the operation of the coke guide wheel and the cage in the vicinity of the coke oven. First, among the plural coking chambers arranged in parallel to the coke oven, one carbonizing chamber finishes the dry distillation of coal. The extruder moves to the so-called machine side of the carbonization chamber, and the coke guide wheel moves to the coke side opposite to the machine side of the carbonization chamber.

  Next, the furnace lid on the coke side of the carbonization chamber is removed by the furnace lid desorption device of the coke guide car, and the cage for the coke guide car moves to the retracted end of the movable range of the coke guide car (the side farthest from the coking chamber). ) To the forward end (the side closest to the carbonization chamber), and seal materials (knife edges) provided at the tip portions of the pair of guide plates are respectively attached to the furnace frame portions sandwiching the furnace port of the carbonization chamber. Make contact. By such an operation, a passage from the furnace port of the carbonization chamber to the pair of guide plates is formed while ensuring adhesion (air tightness) between the furnace frame and the guide plate tip.

  After that, when the furnace lid on the machine side of the carbonization chamber is removed by the furnace lid desorption device of the extruder, the ram beam of the extruder is inserted into the carbonization chamber, and the coke in the carbonization chamber is pushed out toward the coke guide car. The extruded coke is supported by a bottom guide provided at the bottom of the cage for the coke guide car, and is provided on the back side of the cage while the traveling direction to the fire extinguishing car is guided by the pair of guide plates. It is discharged to the fire extinguisher through the discharge port.

  Since coke pushed out of the carbonization chamber is at a high temperature of about 1000 ° C., the guide plate in direct contact with the coke is exposed to high temperature while guiding the coke. For this reason, the heat of coke is transferred from the guide plate to the support frame of the cage for the coke guide car, and the support frame may be deformed in the width direction of the cage by the heat of the coke.

  By the way, in the coke oven, a so-called clogging phenomenon in which the coke extrusion operation stops midway may occur due to carbon adhesion in the carbonization chamber, lack of dry distillation of coal, or the like.

  At this time, high-temperature coke stays in the cage for the coke guide car for a long time, and the support frame is not simply deformed, and permanent deformation due to the deformation may occur in the support frame. Due to the deformation of the support frame, the vertical inclination of the wheel holding member fixed to the support frame changes, and the wheels of the cage for the coke guide car cannot contact the machine frame and run smoothly. The forward / backward movement of the cage for the coke guide car was hindered, and the coke discharge operation from the carbonization chamber to the fire extinguisher by the coke guide car was sometimes delayed.

  The present invention has been made in view of the above-described problem, and even when high-temperature coke stays in the coke guide car cage for a long time due to the so-called clogging phenomenon, the advancing and retreating movement with respect to the carbonization chamber is performed. An object of the present invention is to provide a cage for a coke guide car that can be smoothly operated.

A cage for a coke guide car according to the present invention is supported on a machine frame of a coke guide car so as to be capable of moving forward and backward with respect to a coking chamber of a coke oven through wheels, and guides coke pushed out of the coking chamber to the outside. A pair of flat plates that form a path; and a support frame that supports the pair of flat plates in a standing state substantially parallel to each other , and the support frame includes a plurality of long steel members that are vertically erected. In the cage for a cork guide car, the wheel is rotatably attached to the upper end portion of the steel material, and a panel-like heat insulation is provided between the flat plate and the steel material so as to block heat transfer from the flat plate to the steel material. It is characterized in that a material is interposed.

  According to the cage for a coke guide car, heat transfer from the pair of flat plates in direct contact with the high-temperature coke to the support frame is blocked by the heat insulating material, and deformation of the support frame due to the heat of the coke is suppressed.

  As described above, according to the cage for a coke guide car according to the present invention, even when high-temperature coke stays in the cage for a long time due to a so-called clogging phenomenon, the advancing and retreating movement with respect to each carbonization chamber is smooth. Will be able to do.

Hereinafter, an embodiment of a cage for a coke guide car according to the present invention will be described with reference to the drawings. FIG. 1 is a right side view of a cage for a coke guide car according to the present embodiment, and FIG. 2 is a front view (a view from the carbonization chamber side) of the cage for a coke guide car according to the present embodiment. As shown in FIGS. 1 and 2, the coke guide car cage 1 is a coke oven in which a plurality of carbonization chambers 5,... Are juxtaposed on a machine frame 3 of a coke guide car 2 via suspension wheels 4. Each carbonization chamber 5 is supported so as to freely advance and retract. In the present embodiment, the coke guide wheel 2 is installed on the rail 100 laid in the juxtaposition direction of the plurality of carbonizing chambers 5,. Yes.

  As shown in FIGS. 1 and 2, the machine casing 3 of the cork guide wheel 2 has a pair of left and right lengths whose lower ends are fixed to a pedestal 8 a provided with the pedestal wheels 8 and are vertically erected. A pair of left and right elongated steel members 3b, which are joined to the upper ends of the steel members 3a, 3a and the steel members 3a, 3a, respectively, and are laterally arranged in a direction perpendicular to the steel members 3a, 3a and the rail 100, 3b is comprised. In the present embodiment, the steel material 3a and the steel material 3b are both formed of H-shaped steel.

  The cage 1 for a coke guide car 1 includes a pair of guide plates (flat plates) 6 and 6 that form a guide path for coke pushed out from the carbonization chambers 5 and the pair of guide plates 6 and 6. And a support frame 7 that is supported in a standing state in parallel.

  Specifically, as shown in FIGS. 1 and 2, the support frame 7 includes a plurality of long steel materials 9 a,. , And a plurality of elongated steel materials 9b, which are laterally arranged in a direction orthogonal to the rail 100, and a side peripheral edge of the cage 1 for a coke guide car. A plurality of steel materials 10,... Provided along with the bolts, nuts, welding, and the like are appropriately combined to secure the structural strength of the cage 1 for the cork guide car. . Of the support frame 7, the steel material 9a and the steel material 9b are both made of H-shaped steel. The pair of guide plates 6 and 6 are supported by the support frame 7 so as to face each other and be substantially parallel to each other, and form a coke guide path that is pushed out from each carbonization chamber 5 to the outside. ing.

  As shown in FIGS. 1 and 2, the pair of left and right steel members 3a and 3a of the coke guide wheel 2 are installed horizontally along the pair of guide plates 6 and 6 in a direction perpendicular to the steel members 3a and 3a. The pair of left and right steel materials 3c, 3c are fixed to a pair of left and right guide rollers 15, 15 that run in contact with the steel materials 9b, 9b of the cork guide car cage 1 so as to be rotatable. Is guided between the guide rollers 15 and 15 from the left and right when moving between the backward end and the forward end of the movable range of the coke guide wheel 2. In the present embodiment, the detection of the positions of the rearward end and the forward end of the coke guide car cage 1 is performed on the steel material 9a provided closest to the carbonization chamber 5 among the plurality of steel materials 9a,. This is performed by a limit switch 11 fixed in the vicinity of the lower end.

  In the present embodiment, the suspension wheel 4 is rotatably held by a wheel holding member 4a. Specifically, as shown in FIG. 1 and FIG. 2, a plurality of suspension wheels 4 are provided in a cage 1 for a cork guide car (a total of four pairs, left and right in two forward and backward directions of the cage). Each is supported by one rotating shaft 4b and is rotatably held by a wheel holding member 4a.

  The wheel holding member 4a is rotatably connected to the support frame 7 in a direction perpendicular to the pair of guide plates 6 and 6 (rail 100 direction). Specifically, as shown in FIGS. 3 (a) and 3 (b), the cylindrical member 12 provided at the upper end of each steel material 9a constituting the support frame 7 and the lower end of each wheel holding member 4a. One pin 14 is inserted into each of the provided cylindrical members 13, and the wheel holding member 4 a is rotatably connected to the support frame 7 by the pins 14.

In this state, referring to FIG. 1, the steel material 3 a constituting the machine frame 3 of the coke guide car 2 and the steel material 9 b constituting the support frame 7 of the cage 1 for the coke guide car 1 are stretched and extended. When the hydraulic cylinder 16 is expanded and contracted, the cork guide car cage 1 is pushed and pulled by the coke guide wheel 2 and moves between the backward end and the forward end of the movable range of the coke guide wheel 2 as the suspension wheel 4 moves. Travels along the longitudinal direction of the steel material 3b in a state in contact with the steel material 3b (the lower surface of the concave portion of the H-shaped steel).

  The cage 1 for a coke guide car according to the present embodiment has the above-described configuration, and when the coke pushed out from the one carbonization chamber 5 that has finished the dry distillation of coal is guided to the fire extinguisher, the wheel holding member 4a is provided by the pin 14. Since the support frame 7 (steel material 9a) is rotatably connected, the support frame 7 (steel material 9a) of the cage 1 is deformed in the width direction of the cage 1 when the coke is guided by the ordinary cage 1 for a coke guide car. Needless to say, a clogging phenomenon occurs in the coke oven, and high-temperature coke stays in the coke guide car cage 1 for a long time, and the support frame 7 of the cage 1 becomes the width of the cage 1 due to the heat of the coke. Even when deformed in the direction, the wheel holding member 4a rotates relative to the support frame 7, so that the axis of the suspension wheel 4 always remains in the horizontal direction. Smoothly travel in contact with wood 3b. As a result, the coke guide car cage 1 can be moved back and forth smoothly with respect to each carbonization chamber 5, and the coke discharging operation from each carbonization chamber 5 to the fire extinguisher by the coke guide car 2 can be performed without delay.

  In the cork guide car cage 1, a heat insulating material is preferably interposed between the guide plate 6 and the support frame 7. Specifically, as shown in FIG. 4, the heat insulating material 17 is a bolt and nut in a paneled state between each guide plate 6 and the support frame 7 (steel material 9a, steel material 9b, steel material 10). It is preferably fixed and interposed. The material of the heat insulating material 17 is preferably a ceramic fiber or glass fiber, and the thickness is preferably in the range of 25 mm to 50 mm. The thermal conductivity (at 1000 ° C.) of the heat insulating material 17 is preferably in the range of 0.175 W / (m · ° C.) to 0.233 W / (m · ° C.).

  As a result, heat transfer from the pair of guide plates 6 and 6 directly contacting the high-temperature coke to the support frame 7 is blocked by the heat insulating material 17. The difference between the temperature on the guide plate 6 side of the support frame 7 and the temperature on the outside air side is reduced, and the deformation of the support frame 7 due to the heat of coke is reduced.

  For this reason, in the prior art, there is a problem that a gap is generated between the furnace frame and the guide plate tip (knife edge) due to the deformation of the support frame 7, and gas and dust in the carbonization chamber 5 leak from the gap. If so, this problem is solved.

  Further, since the deformation of the support frame 7 is reduced, even when the wheel holding member 4a is fixed to the support frame 7, the inclination of the wheel holding member 4a in the vertical direction is maintained substantially constant. Thus, the forward and backward movement of the coke guide car cage 1 with respect to each carbonization chamber 5 can be performed smoothly.

  In the cage 1 for a coke guide car, the support frame 7 is preferably made of a steel material having a yield strength at 600 ° C. of ½ or more, preferably 2/3 or more of the yield strength at room temperature. Specific examples of such steel materials include, but are not limited to, refractory steel (FR steel), ‘NSFR400’ (product symbol) manufactured by Nippon Steel Corporation.

As a result, the yield strength of the support frame 7 at a high temperature is increased, the elastic deformation range of the support frame 7 is expanded and plastic deformation is less likely to occur, so-called clogging phenomenon occurs in the coke oven, and the high temperature coke is prolonged. Even in the case where it stays in the cage 1 for the coke guide car, the occurrence of permanent deformation of the support frame 7 due to the heat of coke is suppressed. For this reason, even when the wheel holding member 4a is fixed to the support frame 7, the change in the vertical inclination of the wheel holding member 4a due to the permanent distortion of the support frame 7 can be suppressed. Will be able to travel smoothly in contact with the steel material 3b. As a result, the forward and backward movement of the coke guide car cage 1 relative to the carbonization chamber 5 can be performed smoothly, and the coke discharge operation from the carbonization chamber 5 to the fire extinguisher by the coke guide car 2 can be performed without delay.

  In addition, the cage 1 for the coke guide car increases the rigidity of the entire cage, and improves the resistance to the load caused by the impact during the movement and the coke load during the coke guidance. The size is preferably in the range of H175 × 175 to H250 × 250, and the distance between adjacent steel materials 9a is preferably in the range of 500 mm to 1000 mm. Thus, it is preferable that the secondary moment of inertia I of the entire cage be in the range of 25000 cm 4 to 35000 cm 4.

  In the cork guide car cage 1 of the present embodiment, as shown in FIG. 5, the kiln mouths of the carbonization chambers 5 are provided at the tip portions (only the right side is shown in FIG. 5) of the pair of guide plates 6 and 6. The first knife edge 18 that abuts on the sheet surface 21a of the furnace frame 21 surrounding the furnace frame 21 is provided, and further, the second knife that abuts on the backstays 19 provided on both outer sides of the furnace frame 21 respectively. An edge 20 (see FIG. 1) is provided. The second knife edge 20 includes a plurality of steel materials 9 a,... Constituting the support frame 7, a plurality of steel materials 9 a closest to the carbonization chamber 5 and arranged at predetermined intervals in the vertical direction. The shafts 22a of the spring mechanisms 22,... (See FIG. 1) are fixedly urged toward the backstay 19.

  When the coke pushed out from each carbonization chamber 5 is introduced between the pair of left and right guide plates 6, 6, the pair of left and right first knife edges 18, 18 are respectively placed on the sheet surfaces 21 a, 21 a of the furnace frame 21. In the prior art, the first knife edge 18, 20 is not only brought into contact but also brought into contact with the pair of left and right back stays 19, 19. 18 is provided, and a gap is generated between each first knife edge 18 and the seat surface 21a due to deformation of the support frame 7, and gas and dust in the carbonizing chamber 5 leak from the gap. In this embodiment, the second knife edge 20, 20 abuts on the backstays 19, 19, respectively. Results Lumpur is enhanced remarkably compared with the prior art, leaking out of such gases and dust can be effectively prevented.

  As described above, according to the cage for a coke guide car according to the present embodiment, even when high-temperature coke stays in the coke guide car cage for a long time due to a so-called clogging phenomenon, the carbonization chamber. As a result, the coke discharging operation from the carbonization chamber to the fire extinguisher by the coke guide car can be performed without delay.

  In addition, this invention is not limited to the said embodiment, In the range which does not change the summary of this invention, implementation of various forms is possible.

  For example, in the above-described embodiment, the wheel holding member 4a that rotatably holds the suspension wheel 4 is connected to the support frame 7 of the cage 1 for a cork guide car so as to be rotatable in a direction perpendicular to the pair of guide plates 6 and 6. However, the wheel holding member 4a does not necessarily need to be connected to the support frame 7, and may be connected to any member constituting the cage 1 for a coke guide car. Furthermore, it is not always necessary to be connected to the pair of guide plates 6 and 6 so as to be rotatable in a direction perpendicular to the pair of guide plates 6 and 6. In short, when the support frame 7 is deformed, the inclination of the wheel holding member 4a in the vertical direction is maintained substantially constant, and the suspended wheel 4 is in smooth contact with the machine frame 3 (steel material 3b) of the coke guide car 2. Any configuration can be used.

FIG. 1 is a right side view of a cage for a coke guide car according to an embodiment of the present invention. FIG. 2 is a partially omitted front view of the cage for a coke guide car of FIG. 1 (view from the carbonization chamber side). FIG. 3A is an enlarged right side view of the suspension wheel portion of the cage for the coke guide car of FIG. 1, and FIG. 3B is the suspension wheel portion of the cage for the coke guide car of FIG. It is a front enlarged view which expands and shows. FIG. 4 is a cross-sectional view showing a state in which a heat insulating material is interposed between the guide plate and the support frame. FIG. 5 is an enlarged cross-sectional view of a tip portion of a guide plate of a cage for a cork guide car according to an embodiment of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Coke guide car cage, 2 ... Coke guide car, 3 ... Machine frame, 4 ... Suspension wheel (wheel), 4a ... Wheel holding member, 5 ... Carbonization chamber, 6 ... Guide plate (flat plate), 7 ... Support frame , 17 ... Insulation

Claims (1)

A pair of flat plates that are supported by a machine frame of a coke guide wheel so as to be able to advance and retreat with respect to a coking chamber of a coke oven through wheels, and that form a guide path for coke pushed out of the coking chamber to the outside, and the pair A support frame that supports the flat plates in a standing state substantially parallel to each other , and the support frame is a cage for a coke guide car that includes a plurality of long steel materials that are erected in the vertical direction .
The wheel is rotatably attached to the upper end of the steel material,
A cage for a coke guide car, wherein a panel-like heat insulating material is interposed between the flat plate and the steel material in order to block heat transfer from the flat plate to the steel material.

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