KR20130119244A - Apparatus and method for inserting raw material in storage bin - Google Patents

Abstract

PURPOSE: A device and method for inserting a raw material into a storage bin are provided to reduce the height deviation of raw materials stored in a storage bin by individually controlling the amount of raw materials inserted into chutes. CONSTITUTION: A device for inserting a raw material into a storage bin comprises a chute (10), two or more adjusting units (100), a drive unit (200), two or more level sensors (40), and a controller (300). The chute is formed in a tripper car to insert raw materials into a storage bin. The adjusting units are installed inside of the chute and adjust the size of a moving path for the raw materials. The drive unit powers the adjusting units. The level sensors are formed on the top of the storage bin to sense the height of the raw materials inserted into the storage bin. The control unit individually controls the operation of the adjusting units according to the height of the raw materials sensed from the level sensors.

Description

Raw material charging device and method of storage bin {APPARATUS AND METHOD FOR INSERTING RAW MATERIAL IN STORAGE BIN}

The present invention relates to a raw material charging apparatus and method of a storage bin, and more particularly, to a raw material charging apparatus and method of a storage bin for loading the raw material to reduce the height deviation of the raw material deposited in the storage bin.

Generally, coke, which is a raw material used in blast furnace operation of a steel mill, is heat-treated in a coke oven and then charged and stored in a coke bin, which is a facility for storing coke through a digestion (cooling) process.

1 is a view showing a coke charging apparatus of a general coke bin, and as shown in FIG. 1, a plurality of coke bins 20 are generally arranged adjacent to each other, so that coke is smoothly disposed in the coke bin 20 disposed as described above. In order to make it charge, the rail 3 is installed in the upper part of the coke bin 20 in the direction in which these coke bins 20 are arrange | positioned. And a tripper car (1) is provided to drop the coke transported through the belt conveyor (2) through the inlet of the coke bin 20 while traveling along the rail (3). In addition, a lower belt conveyor 30 is provided at the lower portion of the coke bin 20, that is, at the lower portion of the outlet of the coke bin 20 to transfer the coke C discharged from the coke bin 20 to another facility.

The coke charging apparatus of the general coke bin is specifically known in the "coordination adjustment of the coke bin charging equipment and dust collector (registered patent 10-0992358)".

On the other hand, Figure 2 is a view showing the configuration of the conventional coke charging apparatus and the loading state of the coke, as shown in Figures 1 and 2, the tripper car 1 is a coke transported by the belt conveyor (2) As an intermediate unloading device for distributing (C) to a plurality of coke bins 20, the lower part of the chute 10 is bifurcated for smooth charging of the coke C. Thus, the coke C transferred to the belt conveyor 2 is charged into the coke bin 20 through the chute 10 of the tripper car 1, where the operation and operation of the tripper car 1 is performed by coke. It is controlled according to the level (height) of the coke C deposited inside the bin 20. Therefore, in order to measure the level of the coke (C) accumulated in the coke bin 20, the ultrasonic level measuring unit 40 is installed on the top of the coke bin (20).

On the other hand, the coke C discharged through the chute 10 bifurcated from the tripper car 1 is not uniform in the amount of coke C discharged to each chute 10, the coke bin ( Since the coke C is discharged first when the coke C is discharged in 20), the accumulation level of the coke C is not maintained uniformly, and a level deviation d for each region always occurs.

As described above, the level of the coke C stored in the coke bin 20 is measured by the ultrasonic measuring device 40. The ultrasonic level measuring device 40 considers the position of the chute 10 of the tripper car 1, and the like. To be installed on one side of the upper side of the coke bin (20). As the installation position of the ultrasonic level measuring unit 40 is limited and the measurement range that can be measured by the ultrasonic level measuring unit 40 is limited, the level deviation d of the coke C stored in the coke bin 20 is d. Is excessively generated for each region.

Due to the difference in the level for each area of the coke (C) stored in this way, the actual storage rate compared to the storage capacity of the coke bin 20 occurred significantly. Accordingly, when storing the coke C in the coke bin 20, it was recognized as an important problem to store at a uniform and constant level.

However, until now, much research has not been conducted on techniques for improving the level difference between the areas of the coke C stored in the coke bin 20.

Patent Registration 10-0992358 (October 29, 2010)

The present invention provides a raw material charging apparatus and method for a storage bin for charging coke so that the level of coke stored in the coke bin is kept uniform.

In particular, there is provided a raw material charging apparatus and method for a storage bin capable of controlling the amount of coke charged in each chute provided branched from a tripper car.

A raw material charging device for a storage bin according to an embodiment of the present invention is a device for charging a raw material into a storage bin using a tripper car, which is provided in the tripper car so as to charge the raw material into the storage bin and branches into at least two or more. Chute being; At least two control units installed in each chute to adjust the size of the movement path through which the raw material falls; A driving unit for driving the adjusting unit to adjust the size of the moving path inside the chute; At least two level sensors provided on an upper portion of the storage bin to sense stacking heights of regions of the raw materials charged into the storage bin; And a controller for individually controlling the operation of the control unit according to the height of the raw material for each region inside the storage bin sensed by the level sensor.

The adjustment unit and the hinge is installed on one side of the inner peripheral surface of the chute; The upper end is connected to the hinge and rotated to include a damper for changing the size of the movement path inside the chute.

The drive unit includes a cylinder installed outside the chute; An actuating rod installed in the cylinder and moving forward or backward by operation of the cylinder, and an end portion of which is connected to the damper through the chute; It includes a distance measuring sensor for detecting the degree of forward or reverse of the operating rod.

The level sensor is provided in the same number as the number of the chute is installed in a position adjacent to the chute.

The upper portion of the inner peripheral surface of the chute chute installed position is characterized in that the buffer plate for protecting the control unit from the falling raw material.

According to an embodiment of the present invention, a method of charging a raw material of a storage bin is a method of charging a raw material into a storage bin using a tripper car, the method comprising: measuring a stacking height of at least two regions of the raw material charged into the storage bin; ; When the average of the stacking heights of the raw materials for each region is less than or equal to 50% of the maximum storage capacity of the storage bin, charging the raw materials into the storage bins by region through at least two chutes; Calculating deviations of each other by measuring a stacking height of raw materials for each region of the storage bin; And controlling the amount of raw material charged into each chute by adjusting the opening amount of each chute when the calculated stack height deviation of the raw material for each region is equal to or greater than a set value.

In the step of controlling the charge amount of the raw material individually, if the calculated stacking height deviation of the raw material for each region is 10% or more, the opening amount of the chute for charging the raw material into the region having a relatively high stacking height is reduced by 30% or more It is done.

In the step of controlling the charging amount of the raw material individually, if the calculated stacking height deviation of the raw material for each region is 20% or more, reducing the opening amount of the chute for charging the raw material into the region having a relatively high stacking height by 50% or more It is done.

Adjusting to reduce the opening amount of the chute is characterized in that by adjusting the angle of the damper provided to adjust the size of the chute movement path.

After the step of controlling the charge amount of the raw material individually, if the calculated stacking height deviation of the raw material for each region is 5% or less, the step of adjusting the opening amount of each chute to include the step of charging the raw material.

According to an embodiment of the present invention, by measuring the level of the coke stored in the coke bin, and in conjunction with each other to control the amount of coke charged in each branch branched bifurcation of the coke deposited in the coke bin This has the effect of keeping the level uniform throughout the entire area.

Accordingly, the amount of coke deposited on the coke bin can be accurately measured, and the amount of coke corresponding to the storage capacity of the coke bin can be sufficiently stored, thereby improving the storage capacity of the coke bin.

1 is a view showing a coke charging apparatus of a general coke bin,
2 is a view showing the configuration of the conventional coke charging apparatus and the state of loading of coke,
3 is a view showing a raw material charging device of a storage bin according to an embodiment of the present invention,
4 is a view showing a distance measuring sensor of the present invention,
5a and 5b is a view showing the operating state of the raw material charging apparatus according to an embodiment of the present invention,
6 is a flowchart showing a raw material charging method according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Wherein like reference numerals refer to like elements throughout.

3 is a view showing a raw material charging device of a storage bin according to an embodiment of the present invention, Figure 4 is a view showing a distance measuring sensor of the present invention.

First, the present invention relates to an apparatus for charging raw materials into a storage bin for storing raw materials. In the present embodiment, for example, coke (C), which is a raw material used in blast furnace operation, and a coke bin 20 for storing the coke, are used. Explain. Of course, the present invention has been described using coke (C) as an example of the raw material, but the raw material described is not limited to the coke (C), but various raw materials or fuels that are solid materials having a predetermined size and shape may be applied.

Accordingly, as shown in FIG. 3, the raw material charging device for the storage bin according to the embodiment of the present invention is a device for charging the coke C into the coke bin 20 using a tripper car. At least two level sensors provided on the chute 10 is provided with at least two branches, the control unit 100 installed in each of the chute 10, and the top of the coke bin (20) 40 and a control unit 300 for individually controlling the operation of the control unit 100 according to the height of the raw material for each region in the coke bin 20 sensed by the level sensor 40.

The chute 10 is a component provided in the tripper car 1 which is an intermediate unloading device for distributing the coke C conveyed by the belt conveyor 2 to the plurality of coke bins 20. ), The chute 10 is branched into at least two or more so as to evenly charge the coke bin 20 by area. In the present embodiment, the chute 10 is divided into two to be described as an example. Of course, the chute 10 is not limited to two branches as in the embodiment, and may be implemented to be changed to diverge into two or more branches depending on the size of the coke bin 20.

The control unit 100 is installed inside the branched chute 10 (hereinafter referred to as "suit") to adjust the size of the movement path (hereinafter referred to as "opening amount") that the raw material falls. A unit for controlling the amount of coke (C) charged through each chute 10, provided in a number corresponding to the number of the chute 10 is installed in the chute 10, respectively. In this embodiment, two adjusting units 100 are provided.

The adjusting unit 100 is the hinge 120 is installed on one side of the inner peripheral surface of the chute 10, the upper end is connected to the hinge 120, the inside size of the chute 10, that is, coke (C) It comprises a damper 110 for changing the size of the path (hereinafter referred to as "size of the chute") is moved.

The hinge 120 is installed to protrude from the inner wall of the chute 10, the damper 110 is connected so that the upper end is rotated to the hinge 120, the damper 110 is centered on the hinge 120 It is rotated to the axis.

The damper 110 is preferably formed in a smaller size than the size of the chute 10. Thus, when the damper 110 is located directly below, the size of the chute 10 is maintained at its original size, and the size of the chute 10 is increased as the damper 110 is rotated and rotated in the vertical direction. Becomes smaller.

The drive unit 200 is a unit for driving the damper 110 of the control unit 100 to rotate the size of the chute 10, a cylinder installed on the outside of the chute ( 210 and an operating rod 220 installed in the cylinder 210 to be advanced or retracted by the operation of the cylinder 210.

The cylinder 210 is a means actuated by hydraulic pressure or pneumatic pressure, and operates the operation rod 220 to move forward or backward.

The working rod 220 is built in the cylinder 210 on one side, and the other side is connected to the damper 110 through the wall of the chute 10. Thus, the damper 110 is rotated by an operation of advancing or reversing the operation rod 220 by the operation of the cylinder 210.

On the other hand, the drive unit 200 includes a distance measuring sensor 230 for detecting the degree of forward or backward of the operation rod 220. The distance measuring sensor 230 may use any means for measuring the degree of operation of the operation rod 220. For example, in this embodiment, one end is connected to the operation rod 220 is integrally moved forward or backward according to the forward or backward of the operation rod 220, at this time the operating direction and distance by measuring the operation rod 220 The distance measuring sensor 230 of the method of measuring the degree of operation was used.

On the other hand, the hinge 120 and the damper 110 from the coke (C) falling through the chute 10 in the upper portion of the inner peripheral surface of the chute 10, the hinge 120 and the damper 110 is installed. The shock absorbing plate 400 is provided.

The buffer plate 400 is not limited to a specific shape, and the coke C falling from the top to the bottom by covering the upper regions of the hinge 120 and the damper 110 includes the hinge 120 and the damper 110. Reduces the impact force applied directly to For example, in the present embodiment, a plate having a flat shape is provided to protrude from the inner circumferential surface of the chute 10 toward the upper region of the hinge 120.

The level sensor 40 is a means for measuring the level of coke deposited on the coke bin 20, for example, the level sensor 40 using ultrasonic waves may be applied. The level sensor 40 is provided with at least two or more to measure the level for each area of the coke (C) deposited on the coke bin 20, preferably in the same number as the number of the chute (10) It is preferable to be provided at a position adjacent to the chute (10). Therefore, the level of the coke (C) for each area detected by the level sensor 40 is measured in real time, and used to control the operation degree of the driving unit 200 using the measured data.

The controller 300 is a means for individually controlling the operation of the adjustment unit 100 according to the level of the coke (C) for each area in the coke bin 20 detected by the level sensor 40, the distance The operation of the cylinder 210 is controlled according to the measured value detected by the measuring sensor 230 and the level sensor 40. For example, if the level value of the coke (C) detected by any of the level sensors 40 of the level sensor 40 is greater than the level value of the coke (C) detected by the other level sensor 40, the corresponding level sensor As the operating rod 220 is advanced by operating the cylinder 210 connected to the chute 10 disposed adjacent to the 40, the damper 110 inside the chute 10 is rotated, and thus the chute 10 is operated. ) To reduce the size of the coke (C) is charged through the chute (10), and the amount of rotation of the damper (110) rotated by the operation of the cylinder 210 is the operation rod 220 And measure the movement value of the operating rod 220 detected by the distance measuring sensor 230 connected thereto.

With reference to the drawings the operating state and the raw material charging method of the storage bin of the storage bin according to an embodiment of the present invention configured as described above with reference to the drawings.

5a and 5b is a view showing the operating state of the raw material charging apparatus according to an embodiment of the present invention, Figure 6 is a flow chart showing a raw material charging method according to an embodiment of the present invention.

First, when the amount of coke (C) stored in the coke bin 20 is detected as 50% or less, the tripper car 1 is moved to the top of the corresponding coke bin 20 to replace the coke (C) with the corresponding coke bin 20 Charge). At this time, the coke (C) is charged through the branched two chute (10).

Thus, while the coke C is charged through the two chutes 10, the level sensor 40 installed adjacent to each chute 10 measures the coke C level of the corresponding area individually.

At this time, when the level deviation (D) for each region of the coke (C) as shown in Figure 5a, it is detected by any one of the level sensor 40a (left level sensor of Figure 5a) of the level sensor 40 The level of the coke C is detected to be higher than the level of the coke C detected by another level sensor 40b (right level sensor of FIG. 5A), and the level of the coke C is detected by the controller 300. The cylinder 210 installed in the chute 10 adjacent to the level sensor 40a is operated. Then, as the working rod 220 connected to the cylinder 210 is advanced, the damper 110 is rotated, and the size (opening amount) of the chute 10 is narrowed by the rotated damper 110. Accordingly, the charging amount of the coke (C) charged through the chute 10 is reduced. At this time, the momentum of the operation rod 220 is measured in real time by the distance measuring sensor 230 is transmitted to the control unit 300.

As the amount of coke (C) charged into the corresponding area decreases as the amount of charge through the chute 10 corresponding to the area where the level of the coke (C) is sensed is reduced, the amount of coke (C) charged into the other area is The level of coke (C) deposited on the coke bin 20 is maintained as it is or remain relatively large so as to be uniform.

When the deviation of the level of the coke C for each area of the coke bin 20 is maintained at 5% or less, the control unit 300 reversely operates the cylinder 210 to reverse the working rod 220, thereby damping ( 110 is rotated in the reverse direction and the size of the chute 10 is returned to its original state so that the opening amount of each chute 10 remains the same.

While the coke C is charged through the chute 10 as shown in FIG. 5B, the control unit 300 measures the level value of the coke C measured by each level sensor 40 in real time. By individually controlling the operation of the cylinder 210 installed in the chute 10 adjacent to 40, the damper 110 provided in each chute 10 is rotated individually to adjust the size of each chute 10. Thus, by adjusting the amount of coke (C) charged through each chute 10 it is possible to maintain the level of the coke (C) uniformly.

Next, the experiment to control the opening amount of the chute according to the present invention is shown and the results are shown.

<Experiment 1>

An experiment was conducted in which coke was charged into a coke bin using a tripper car equipped with two chutes, and two level sensors were installed adjacent to each chute. For the sake of accuracy, two chutes are referred to as a first chute and a second chute, and a level sensor installed adjacent to the chute is referred to as a first level sensor and a second level sensor.

When the coke stacking deviation measured by the first level sensor and the second level sensor occurred more than 10%, the opening amount of the chute adjacent to the level sensor showing a relatively high stacking amount was reduced by 30%. Table 1 shows. In this case, reducing the opening amount by 30% means that the operating rod of the cylinder for rotating the damper provided in the chute is advanced by 30% of the maximum operating amount.

Item
Measures Remarks
1st level sensor 2nd level sensor Level measurement 400ton 480ton 80 tons (10%) deviation Lower opening amount of 2nd chute by 30% 130ton / h 70ton / h Total tidal volume 200ton / h Measured after 1 hour
Level measurement 530ton / h 550ton / h Maintains the normal error range with the deviation measured by the first level sensor and the second level sensor as 20ton

As shown in Table 1, it was confirmed that the deviation of the coke stacking amount measured by the first level sensor and the second level sensor was adjusted within the normal error range 1 hour after the opening degree of the second chute was adjusted by 30%. there was.

<Experiment 2>

Experimental means and methods were carried out in the same manner as in Experiment 1. However, when the coke stacking deviation measured by the first level sensor and the second level sensor was more than 20%, the opening amount of the chute adjacent to the level sensor showing a relatively high stacking amount was reduced by 50%. It is shown in Table 2 below.

Item
Measures Remarks
1st level sensor 2nd level sensor Level measurement 400ton 560ton 160ton (20%) deviation Lower opening amount of 2nd chute 50% 150ton / h 50ton / h Total tidal volume 200ton / h Measured after 1 hour
Level measurement 550ton / h 610ton / h The deviation measured by the first level sensor and the second level sensor is adjusted to 60 tons. Measured after 1 hour and 30 minutes
Level measurement About 620ton / h About 630ton / h Maintains normal error range with deviation of 10 tons measured at 1st level sensor and 2nd level sensor

As shown in Table 2, 1 hour after the 50% lower opening amount of the second chute was adjusted, the variation in the amount of coke deposition measured by the first level sensor and the second level sensor was reduced to 60 tons, and 1 hour and 30 minutes. Afterwards, it was confirmed that the deviation of the stacking amount of coke measured by the first level sensor and the second level sensor was adjusted within the normal error range.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit of the following claims.

C: coke 1: tripper car
2: conveyor belt 10: chute
20: coke bin 30: lower conveyor belt
40: level sensor (ultrasonic level meter)
100: control unit 110: damper
120: hinge 200: drive unit
210: cylinder 220: working rod
230: distance measuring sensor 300: control unit
400: buffer plate

Claims (10)

An apparatus for charging raw materials into a storage bin using a tripper car,
A chute provided in the tripper car to branch the raw material into the storage bin and branched into at least two or more;
At least two control units installed in each chute to adjust the size of the movement path through which the raw material falls;
A driving unit for driving the adjusting unit to adjust the size of the moving path inside the chute;
At least two level sensors provided on an upper portion of the storage bin to sense stacking heights of regions of the raw materials charged into the storage bin;
And a controller for individually controlling the operation of the control unit according to the height of the raw material for each region inside the storage bin detected by the level sensor.
The method according to claim 1, wherein the control unit
A hinge installed at one side of the inner circumferential surface of the chute;
Raw material charging device of the storage bin including a damper for changing the size of the movement path inside the chute while the upper end is connected to the hinge.
The method of claim 2, wherein the drive unit
A cylinder installed outside the chute;
An actuating rod installed in the cylinder and moving forward or backward by operation of the cylinder, and an end portion of which is connected to the damper through the chute;
Raw material charging device of the storage bin including a distance measuring sensor for detecting the degree of forward or backward of the operation rod.
The method according to claim 1,
The level sensor is provided with the same number as the number of the chute raw material charging device, characterized in that installed in the position adjacent to the chute.
The method according to claim 1,
Raw material charging device of the storage bin, characterized in that the buffer plate for protecting the control unit from the falling raw material in the upper portion of the inner peripheral surface of the chute is installed.
A method of charging raw materials into a storage bin using a tripper car,
Measuring a stacking height of at least two regions of the raw materials charged into the storage bin;
When the average of the stacking heights of the raw materials for each region is less than or equal to 50% of the maximum storage capacity of the storage bin, charging the raw materials into the storage bins by region through at least two chutes;
Calculating deviations of each other by measuring a stacking height of raw materials for each region of the storage bin;
And controlling the amount of raw material charged into each chute by controlling the opening amount of each chute when the calculated stacking height deviation of raw materials for each region is equal to or greater than a set value.
The method of claim 6,
In the step of individually controlling the loading amount of the raw material,
The method of loading a raw material in a storage bin, characterized in that if the calculated stacking height deviation of the raw materials for each region is 10% or more, the opening amount of the chute for charging the raw materials into a region having a relatively high stacking height is reduced by 30% or more.
The method of claim 7,
In the step of individually controlling the loading amount of the raw material,
The method of loading a raw material in a storage bin, characterized in that if the calculated stacking height deviation of the raw materials for each region is 20% or more, the opening amount of the chute for charging the raw materials into a region having a relatively high stacking height is reduced by 50% or more.
In claim 7 or 8,
Adjusting to reduce the opening amount of the chute is a raw material charging method of the storage bin, characterized in that by adjusting the angle of the damper provided to adjust the size of the chute movement path.
The method of claim 6,
After the step of individually controlling the loading amount of the raw material,
If the calculated stacking height deviation of the raw material for each region is 5% or less, the raw material charging method of the storage bin comprising the step of charging the raw material by adjusting the opening amount of each chute.

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