KR20010056273A - Detection apparatus of charging amount in coke oven - Google Patents

Abstract

PURPOSE: An apparatus for determining amount of coal is provided to ensure safety of workers by mechanically determining the amount of coal loaded within cokes oven regardless of internal conditions of the oven including temperature, pressure, internal convection state. CONSTITUTION: The apparatus comprises a wire rope (27) having a weight (28); a drum (12) wound with the rope (27); an electric motor (11) to drive the drum; a counter wheel (15) adjacent to the rope (27) and rotating correspond with the movement of the rope (27); a controller part to calculate amount of coal loaded within the cokes oven by utilizing circumference and revolution numbers of the wheel (15) according to a mathematical equation (eq.: amount of coal="( (length from bottom side of the cokes oven to the determination apparatus)-(circumference x revolution numbers) ) x area of the cokes oven); and a housing (21) located at top of a loading hole to receive the wire rope (27), the drum (12), the electric motor (11) and the wheel (15).

Description

Detecting apparatus of charging amount in coke oven

The present invention relates to an apparatus for measuring the amount of charged coal charged in the coke oven, and more particularly, to an apparatus for measuring the amount of charged coal loaded in the coke oven which can ensure the safety by measuring the amount of the charged coal mechanically. It is about.

The height and quantity of charged coal charged in the coke oven improves the efficiency of coke production, and the amount of charged coal plays an important role in controlling the calorie of the coke oven, so that proper combustion control is achieved to contribute to quality stabilization. Therefore, the height and amount of the coal is a very important factor.

In addition, in order to perform optimal volume loading, a change value of the loading density due to the change of moisture and the particle size of the coal is required, and it is also frequently measured as the height and amount of the coal are changed according to the change of the water and the particle size of the coal. shall.

1 is a schematic diagram showing a process of measuring the height and the amount of charging coal charged in the coke oven according to the prior art.

In order to measure the height and amount of the charged coal 4, first, the rising pipe high pressure relief valve is opened so that the flame is not discharged, and the pressure in the gas way above the carbonization chamber 3 is kept low. Open the charging slot using the tool, and attach the manual charging quantity measuring device 6 to the charging hole 2. Then, the tool length is measured using the tape measure 1, and the gasway is calculated using the measured length.

Then, when the maximum height measurement of the charging coal 4 is completed, close the open charging opening and return the high pressure water valve to its original position.

In order to perform such a task, a large number of workers must be mobilized, and since the operation of opening the charging opening of the high temperature coke oven is performed, there is a risk of safety accident of the worker by heat. In addition, there is a disadvantage that an asphyxiation accident of the operator may occur due to incomplete combustion gas, that is, carbon monoxide.

The method introduced in "Japanese Patent Laid-Open No. 60260687" (name of the invention: method and apparatus for detecting the amount of coal charged into the coke oven) is used to fill the pipe into the charging hole by using a pulley. There is a method of detecting the amount of charge by measuring the pressure. In Japanese Patent Application Laid-open No. Hei 8-134461 (name of the invention: a method for controlling coal charging into coke oven), a weight detector installed in a hopper of a charging vehicle is used. A method of checking the rate of change of weight is introduced. In Japanese Patent Application Laid-open No. 9-280929 (name of the invention: Coke Furnace Coal Loading Control Device), the rotation time of the table feeder while monitoring the amount of coal loading by a weigher How to control is introduced.

In addition, "Russian patent SU-1193155 (name of the invention: coke oven coal loading monitor)" introduces a method of detecting a loading amount by rotating a probe generating radio active ultrasonic waves into a charging hole.

In addition, various methods such as a capacitive measuring method, a measuring method using a laser beam, a measuring method using an X-ray, a measuring method using a thermal sensing vision system, and the like are described in patents and articles.

However, it is difficult to measure the loading amount by the conventional detection method due to constraints such as temperature, pressure, internal convection, etc., to be applied to a special environment such as in a coke oven.

The present invention has been made to solve the problems of the prior art as described above, the amount of charged charcoal even in the difficult conditions to measure due to the temperature, pressure, internal convection, etc. of the coke oven in measuring the amount of charged coal and It is an object of the present invention to provide a device for measuring the amount of charged coal loaded in a coke oven which can safely measure the height.

1 is a schematic diagram showing a process of measuring the height and amount of the charging coal charged in the coke oven according to the prior art,

2 is a schematic view showing a state in which a charging amount measuring device of the charging coal loaded in the coke oven according to an embodiment of the present invention is installed in the charging sleeve,

3 is a cross-sectional view of the charging amount measuring device shown in FIG.

Figure 4 is a signal flow diagram of the charging amount measuring apparatus of the loaded coal loaded in the coke oven according to an embodiment of the present invention.

♠ Explanation of symbols on the main parts of the drawing ♠

3: carbonization chamber 4: charging coal

11 DC motor 13 first encoder

14: first guide roller 15: counter wheel

17: 2nd Encoding 18: Strain Gage

19: second guide roller 21: housing

32: encode interface 35: indicator

37: computer 39: input device

100: charge amount measuring device 200: external device

According to the present invention for achieving the object as described above, in the charging amount measuring device of the loaded coal loaded in the coke oven used to measure the amount of charged coal through the charging hole formed on the upper surface of the coke oven A wire rope further suspended at an end, a drum on which the wire rope is wound, an electric motor for rotating the drum, a counter wheel in contact with the wire rope and rotating according to the movement of the wire rope, and the counter wheel A control unit for calculating the amount of charged coal charged into the coke oven by using the circumferential length of and the rotational speed of the coke oven, and a housing accommodating the wire rope, the drum, the electric motor, and the counter wheel and positioned above the charging hole. There is provided an apparatus for measuring the amount of charged coal loaded in a coke oven.

In addition, according to the present invention, the strain gauge is installed on the wire rope to check the tension state of the wire rope and the electrical signal is input to the controller from the strain gauge.

In addition, according to the present invention, the wire rope is provided with at least one pair of guide rollers to guide the movement of the wire rope.

In the following, with reference to the accompanying drawings, a preferred embodiment of the charging amount of the charging coal loaded in the coke oven according to the present invention will be described in detail.

2 is a schematic view showing a state in which a charging amount measuring device of the charging coal loaded in the coke oven according to an embodiment of the present invention is installed in the charging sleeve, Figure 3 is a charge amount measuring apparatus of FIG. 4 is a signal flow diagram of an apparatus for measuring the amount of charged coal loaded in a coke oven according to an embodiment of the present invention.

As shown in Fig. 2 and Fig. 3, the charging amount measuring device of the charging coal 4 loaded in the carbonization chamber 3 of the coke oven is installed on the side of the charging sleeve 7 of the charging vehicle moving above the coke oven. The housing 21 of the charging amount measuring device 100 is fastened and fixed to the side of the charging sleeve 7 of the charging vehicle.

On the other hand, the charging amount measuring device 100 includes a drum 12 wound around the wire rope 27, such a drum 12 is rotated by a DC motor (11). The weight 28 is suspended from the end of the wire rope 27 so that the wire rope 27 extends straight downward by the weight of the weight 28. Therefore, the weight 28 suspended on the end of the wire rope 27 by the rotation of the DC motor 11 is moved up and down in the vertical direction. The first encoder 13 is provided on the opposite side where the DC motor 11 is installed around the drum 12.

In addition, two pairs of the first and second guide rollers 14 and 19 are installed in the lower part of the drum 12 so as to be in contact with the wire rope 27. Such first and second guide rollers 14 and 19 are provided. Is fixed to the housing 21 of the charging amount measuring device 100. The first and second guide rollers 14 and 19 are rollers installed to prevent the wire rope 27 from slipping and to prevent the wire rope 27 from slipping off in a constant direction. By providing the first and second guide rollers 14 and 19, the counter wheel 15 and the wire rope 27 are prevented from slipping.

On the other hand, between the first guide roller 14 and the second guide roller 19 is provided with a counter wheel 15 in contact with the wire rope 27, the counter wheel 15 is also moved by the movement of the wire rope 27 Will rotate. The second encoder 17 of the counter wheel 15 is provided, and a strain gauge 18 for measuring the tension of the wire rope 27 is provided below the second guide roller 19.

The drum 12, the DC motor 11, the first and second encoders 13 and 17, the first and second guide rollers 14 and 19, and the strain gauge 18 described above are charged amount measuring devices ( Housed in the housing 21. In addition, an injection coupling 24 is formed on an upper surface of the housing 21 to inject cooling air into the charging amount measuring device 100, and a wire rope 27 is straight on the lower surface of the housing 21. Through holes are formed to penetrate the wire ropes, and the wire rope guides 20 for guiding the wire ropes 27 are installed in the through holes.

On the other hand, the heat shield coupling 22 is provided on the bottom of the housing 21 to fasten the heat insulating material.

The configuration of the charging amount measuring apparatus 100 has been described above. Hereinafter, an external apparatus connected to the charging amount measuring apparatus 100 and measuring the amount of the charged coal 4 loaded in the coke oven will be described in detail. .

As shown in FIG. 4, the external device 200 is weak in heat, and is spaced apart from the housing 21 of the charging amount measuring device 100.

The second encoder 17 inputs the rotational speed of the counter wheel 15 to the encoder interface 32 as an electrical signal, and the encoder interface 32 outputs the rotational speed to the computer 38. . In addition, in the strain gauge 18 measuring the tension state of the wire rope 27, an analog signal is input to the amplifier 33, the analog signal is amplified and input to the A / D converter 34 is digital Signal is converted. The converted digital signal is input to the computer 38.

Thus, the computer 38 calculates the length of the wire rope 27 loosened in the downward direction of the counter wheel 15 by the number of revolutions of the counter wheel 15 until a signal is input from the strain gauge 18. The height of the charged coal 4 is calculated by calculating the unwrapped length with the length from the bottom of the carbonization chamber 3 to the counter wheel 15.

Then, the calculated information is input to the indicator interface 36 and the indicator interface 36 is input to the indicator 35 so that the monitor can know the calculated information and outputs the calculated value.

On the other hand, when the calculated value is output, the computer 38 inputs a signal to the DC motor drive 31, and the DC motor drive 31 rotates the DC motor 11 to wire rope 27 to the drum 12. ) Rotate to wind. The first encoder 13 outputs the rotation of the drum 12 and inputs a signal to the encoder interface 32.

On the other hand, the computer 38 is connected to the serial interface 40 to enable communication with other external devices.

The operation of the charging amount measuring apparatus of the charged coal loaded in the coke oven configured as described above will be described in detail.

First, in order to load the charge coal 4 in a coke oven, the charge sleeve 7 of a charge vehicle is located in the charge hole 2, and the charge coal 4 is poured. Then, the charging vehicle is moved to the side of the charging hole 2 to position the wire rope 27 of the charging amount measuring apparatus 100 to be inserted into the charging hole 2.

In this state, the operator operates the input device 39 to send a control signal from the computer 38 to rotate the DC motor 11. Then, as the DC motor 11 rotates, the wire rope 27 wound on the drum 12 is released. At this time, the wire rope 27 is moved straight downward by the weight 28, the rotation speed of the drum 12 is input to the computer 38 by the first encoder 13, the wire rope The rotation speed of the counter wheel 15 rotating by the movement of 27 is input to the computer 38 by the second encoder 17.

When the weight 28 moves downward in this way and is seated on the upper surface of the charging coal 4, the wire rope 27 is relaxed and an electric signal is detected by the strain gauge 18 that senses the tension of the wire rope 27. Is input to the computer 38. In this case, the computer 38 controls to stop the rotation of the DC motor 11. The computer 38 uses the rotation speed of the counter wheel 15 from when the wire rope 27 is released until the rotation of the DC motor 11 is stopped, from the weight 28 to the counter wheel 15. Calculate the length of. Subsequently, the height of the charge amount is calculated by subtracting the length from the weight 28 to the counter wheel 15 from the length from the bottom of the coke oven to the counter wheel 15 that has already been measured. The amount of charge of the charged coal 4 is calculated by multiplying the area of the carbonization chamber.

The calculated charge height and the charge amount are displayed on the indicator 35 and the operator can know the loaded height and the charge amount of the charged coal 4 as the numerical value displayed on the indicator 35.

The operator then manipulates the input device 39 to send an input signal to the computer 38 so that the drum 12 rotates to wind the wire rope 27. The computer 38 then sends a control signal to the DC motor 11 so that the wire rope 27 is wound.

Then, the wire rope 27 is wound around the drum 12, the weight 28 is moved upwards, and eventually comes into contact with the housing 21 of the charge amount measuring device 100, so that it can no longer rise.

Then, the rotation of the counter wheel 15 is also stopped and the signal is input to the computer 38 at the second encoder 17 and the control signal is sent to stop the rotation of the DC motor 11 at the computer 38.

As described in detail above, the device for measuring the amount of charged coal loaded in the coke oven of the present invention is an apparatus for measuring mechanically without measuring by the operator, which has the advantage of minimizing the risk of safety accidents.

In addition, there is an advantage that the amount of charge can be measured without being affected by conditions in the coke oven, that is, conditions such as temperature, pressure, and internal convection.

In the above description, the technical concept of the charging amount measuring apparatus of the charged coal loaded in the coke oven of the present invention has been described together with the accompanying drawings, but this is by way of example and not by way of limitation. . In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (3)

In the charging amount measuring device of the charged coal loaded in the coke oven used to measure the amount of charged coal through the charging hole formed in the upper surface of the coke oven, An additional wire rope hanging at the end, A drum in which the wire rope is wound; An electric motor for rotating the drum, A counter wheel in contact with the wire rope and rotating according to the movement of the wire rope, A control unit for calculating the amount of charged coal charged in the coke oven using the circumferential length and the rotational speed of the counter wheel, And a housing accommodating the wire rope, the drum, the electric motor, and the counter wheel and positioned above the charging hole. Quantity of charge coal = [(length from the inner bottom of coke oven to charge quantity measuring device)-(circumference length X rotation speed)] X area of coke oven The method of claim 1, Strain gauge is installed on the wire rope to check the tension state of the wire rope and the electrical signal is input to the controller from the strain gauge, the charging amount of the charging coal loaded in the coke oven, characterized in that. The method according to claim 1 or 2, At least one pair of guide rollers are installed on the wire ropes to guide the movement of the wire ropes.