KR100775223B1 - An apparatus for controlling the operation of mud gun - Google Patents

Abstract

The present invention relates to a device for detecting the position of the sealing ring of the cylinder in the outlet closing device used for closing the outlet of the blast furnace, and to accurately detect the sealing ring position of the cylinder to determine whether the cylinder into which the mud material is injected is in the correct position. The present invention relates to a turning control device of a tap-out closure which is improved to prevent a problem of tap-out closing operation in advance and to prevent safety accidents and equipment accidents in advance.

The present invention is a device for detecting the position of the sealing ring of the cylinder in the outlet closing device used for closing the outlet of the blast furnace, a hole is formed to penetrate the body in front of the mud material inlet front of the fuselage, When the sealing ring of the cylinder is moved forward, the lower end is inclined to contact the sealing ring, the upper end is in contact with the electrical contact terminal to send an electrical signal, and when the reverse is mounted upright detection rod is mounted to block the electrical signal cylinder rod It provides a swing control device of the exit closure is configured to detect the sealing ring position of the.

Blast Furnace, Exit, Exit Closer, Seal Ring, Mud Material, Cylinder Rod

Description

Swing control device of exit closure {AN APPARATUS FOR CONTROLLING THE OPERATION OF MUD GUN}

1 is a configuration diagram showing a state in which the turning control apparatus according to the present invention is mounted in the exit closure;

2 is an exploded view showing the position detection rod equipped in the turning control device of the outlet closure according to the present invention;

3 is a cross-sectional view showing in detail the position detection rod portion of the swing control device of the outlet closure according to the present invention;

4 is an operation state diagram of the position detection rod shown in FIG.

         a) is the state just before the cylinder is advanced,

         b) is the state that the cylinder is advanced to incline the position detection rod,

         c) is the state just before the cylinder reverses,

         d) is a state in which the cylinder is retracted to lift the position detection rod;

5 is a flowchart illustrating an operation of the exit closure with the step of operating the turning control device of the exit closure according to the present invention;

6 is a schematic explanatory diagram showing a state in which the exit closure is provided and operated in the furnace operation;                 

7 is a cross-sectional view for explaining the operating state of the exit closure according to the prior art;

8 is an operational flowchart of the exit closure according to the prior art.

       <Description of the symbols for the main parts of the drawings>

5 ..... hole 10 ..... detection unit

12 .... bolt 15 ..... detection rod

17 .... square rod 18 ..... round ball

20 .... Contact electrical terminal 32 ..... Contact surface

34 .... gypsum coating layer 40 ..... spring

42 .... Cover 100 .... Exit Closer

103. Cylinder 105 .... Sealing ring

124 ... Mud ash slot 200 ...

203 ... exit

The present invention relates to a device for detecting the position of the sealing ring of the cylinder in the outlet closing device used in closing the exit of the blast furnace, more specifically, the cylinder to insert the mud material by accurately detecting the sealing ring position of the cylinder The present invention relates to a turning control device for an exit closure which is improved to prevent problems of the exit closure operation in advance and to prevent safety accidents and equipment accidents in advance.                         

In general, in the method of closing the outlet 203 of the blast furnace 200, as shown in FIG. 6, the outlet closure 100 is used. First, the configuration and operation principle of the outlet closing device 100 will be described below.

The inner surface of the fuselage 102 of the outlet closure 100 is beautifully processed in a round hollow circle, and the cylinder 103 is built in the rear of the outlet closure body 102 so that the cylinder 103 is advanced. In this case, the cylinder rod 103a moves forward, and the inner surface of the outlet closing body 102 and the cylinder rod 103a are maintained at regular intervals in order to prevent the roller rod from being damaged by friction.

In addition, a seal having the same outer diameter as the inner surface of the outlet closing body 102 at the front end of the cylinder rod 103a for sealing between the inner surface of the outlet closing device 100 and the outer peripheral surface of the cylinder rod 103a. A ring 105 is attached and fixed with a fixing bolt 106 to seal between the inner surface of the fuselage 100 and the outer surface of the cylinder rod 103a when the cylinder rod 103a is moved forward or backward. SEALING)) to prevent the mud material 114 from being pushed back, and pushes the mud material 114 to the exit closure tip 117 to be sealed in the exit 203.

On the other hand, the melted melt in the blast furnace 1 is discharged to the tap opening 203 provided in the four directions of the blast furnace 200, in order to discharge the melt, the device for drilling the tap opening 203 (hereinafter referred to as open air) (Not shown) is equipped with a bit to drill the hole (not shown) in the outlet (203) to discharge the melt, while the melt is discharged by the operator in advance preparatory work for closing the outlet (203) A refractory, that is, mud ash 114, which encloses the tap-hole 203 in the fuselage 102 of the closure 100, is introduced into the inlet 124, and a certain amount is input into the outlet-closed fuselage 102. When the control panel 130, the forward cylinder 103 is advanced to repeat the pressing operation to push the mud material 114 to the tip of the tip 117.

In this case, the mud material 114 is pressed into the inside of the exit closing device 100, and after a predetermined time (2 hours to 3 hours), the discharge of the melt inside the blast furnace is completed (without the melt in the blast furnace). When the wind comes out of the exit.

In this case, the operator cleans up the exit port 203 and turns the exit closing device 100 to the exit port 203 in the operation control panel 130, and when the turning is completed, the filling cylinder 103 is advanced to mud. The ash 114 is enclosed in the inside of the outlet 203 to complete closing of the outlet 203.

In this process, in order to detect how far the cylinder rod 103a has advanced in the fuselage 102, the cylinder rod 103a in the outlet closure body 102 at the central portion of the rear face of the outlet closure body 102 is detected. It has a meter 140 for measuring the movement distance. Then, the measurement flows the magnetism from the measuring unit 140 and collides with the filling cylinder rod 103a, and if it interferes with the magnetism at a certain part, the time when the magnetism deforms and returns is measured and the measured value is converted from analog to digital. The distance traveled by the filling cylinder rod 103a of the exit closure is calculated by converting the distance to.

In this regard, a working sequence related to the conventional exit closure is shown in FIG. 8.

However, the exit of the blast furnace as described above is all done by hand and has the following problems.                         

First, the turning operator of the exit closure 100 for closing the exit 203 cannot know the remaining amount of the mud material 114 and the actual position of the cylinder rod 103a in the exit closure fuselage 102.

Second, turning the exit closure 100 to the exit 203 through which the melt is discharged in a state in which the mud material 114 is not contained in the fuselage 102 of the exit closure or the filling cylinder rod 103a is backward. When advancing the filling cylinder 103 to close the outlet 203 arbitrarily, the outlet opening is not sealed unless the outlet opening mud material 114 is compressed in the fuselage 102. The precursor closure 100 is melted by the melt and a large accident occurs that leads to an outage of the blast furnace 200.

Third, since the amount of mud material 114 to be injected into the fuselage 102 of the exit closure 100 is different for each worker, the initial load of the mud material 114 is large, the cylinder rod 103a is a mud of the exit closure When the refilling opening 124 is located at the rear side, when the cylinder rod 103a is advanced and the mudwood 114 is sealed in the outlet opening 203 because the mudwood loading opening 124 is not sealed, the opening opening ( The mud material 114 also pushes out to the side of 124, and sealing of the mud material 114 of the tap hole 203 is not made properly.

Therefore, excessive waste of mud material is caused, and at the same time, mud material filling work of the exit port is inadequate, and the risk of safety accident and equipment accident is high.

The present invention has been made in order to solve the above-mentioned conventional problems, it is easy to check the filling by measuring the amount of mud material in the exit closure body, detect the position of the filling cylinder rod, check the degree of compression of the mud material It is an object of the present invention to provide a turning control device of an exit closure device which is improved to prevent a problem of the opening closure operation in advance and to prevent a safety accident and an equipment accident of the worker according to the exit closure operation in advance.

The present invention as a technical means for achieving the above object, in the apparatus for detecting the position of the sealing ring of the cylinder in the outlet closing device used for closing the outlet of the blast furnace, the body is placed in front of the mud material inlet front upper side of the body A hole is formed to penetrate therein, and when the sealing ring of the cylinder moves forward, the lower end is inclined to contact the sealing ring so that its upper end contacts the electrical contact terminal to transmit an electrical signal, and if it is reversed, it is upright. The detection rod for blocking the electrical signal is mounted to provide a swing control device of the exit closure, characterized in that configured to detect the sealing ring position of the cylinder rod.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a configuration diagram of a tap-off closure provided with a swing control device of the present invention, FIG. 2 is an exploded view of a detection rod provided in the swing control device of the present invention, and FIG. 3 is a configuration diagram of the swing control device of the present invention.

The turning control device 1 of the outlet closing device according to the present invention has a hole 5 formed in a round shape having a predetermined size in front of the mud ash inlet 124 of the outlet closing body 102. The round hole 5 is formed inside and outside the fuselage 102, and is formed in multiple stages, that is, two stages so that the inner hole is small and the outer hole is large, the periphery of the multi-stage insertion hole 5 The bolt hole 7 which fixes a bolt in the hole is processed.

On the other hand, the detection unit 10 for detecting the cylinder sealing ring 105 is fixed by the bolt 12 to the hole 5, the detection unit 10 is the detection rod 15 on the inside And an electrical contact terminal 20, and an oscillator 22 on the upper side thereof.

As shown in FIG. 2, the detection rod 15 has an upper side processed into a square rod 17, and a contact point 31 having a predetermined size protrudes from one surface of the square rod 17, and a lower portion thereof. Has a round circular ball 18 shape, and a rectangular contact surface 32 having a predetermined size protrudes below the circular ball 18.

And, the detection rod 15 is located in the operating groove (11a) in the body 11 of the detection unit 10 to be inserted into the hole 5 of the fuselage 102 is fixed, the operating groove 11a, the lower side forms a round groove portion 18a into which the circular ball 18 of the detection rod 15 can be inserted, and the upper side of the upper side is gradually lowered toward the upper side. It has the structure of the square groove part 17a of a cross section, one side surface is a straight wall 16a, and the other side surface opposite to this is formed in the inclined surface 16b.

Accordingly, the detection rod 15 is located in the operation groove 11a, the circular ball 18 is located in the round groove 18a, the square rod 17 is located in the square groove 17a, the operation groove 11a The round groove portion 18a of () is in communication with the inside of the fuselage 102 of the outlet opening and closing the contact surface of the detection rod 15 is configured to protrude below.

A spring 40 is interposed between one side surface of the square bar 17 and the inclined surface 16b to elastically support the square bar 17 toward the straight wall 16a.                     

The contact electric terminal 20 is mounted on the inclined surface 16b of the square groove 17a, and the conductive wire 20a of the contact electric terminal 20 is moved from the inclined surface 16b to the upper surface of the cylindrical body 11. It is to be inserted into the inverse "b" ruled pipe 35 extending inwardly with each other.

In addition, the body 11 is the inner peripheral surface of the round groove (18a) and the square groove (17a) is coated with a gypsum layer member 34 to the entire except for the contact terminal 20, respectively, the inside of the electric Insulation structure does not work.

In addition, the upper side of the body 11 is provided with a cover 42, the lower portion is coated with a gypsum layer to process a plurality of bolt holes 42a, the inverse "b" ruled pipe 35 to the top It has a rounded case 50 which protrudes and the vibrator 22 is built in the upper side.

In the case 50, when the contact electric terminal 20 forms an electrical contact in an on state, the case 50 includes a round circular vibrator 22 that generates vibration, and the conducting wires of the vibrator 22 are formed. 22a) is connected to the control unit 130, and a time measuring device 131 for measuring the shaking time of the vibrator 22 is built in the control unit 130. Since the vibrator 22 and the time measuring device 131 of the above-described operation method may use a known structure, a detailed description thereof will be omitted.

On the other hand, in the rear side of the outlet closure 100 is provided with a filling cylinder forward automatic valve 210 and a filling cylinder backward automatic valve 211 for pre-filling the mud ash 114 in the interior of the fuselage 102, It is equipped with a pressure gauge 250 and a pressure detector 251 for detecting the cylinder forward pressure, and a control unit for controlling the above-mentioned device with a turning forward automatic valve 208 and a turning back automatic valve 209 for turning of the outlet closing device. The electrical connection with the 130 is made.

Hereinafter, the operation and effect of the present invention will be described in detail.

In the present invention, after opening the outlet 203, when the melt is discharged, the operator starts the outlet closing device 100 at the site and injects the mud material 114 into the fuselage 102 to fill the forward cylinder 103. While repeatedly operating the forward and backward valves 210 and 211, the mud ash 114 compression operation is repeated in the outlet closure 100.

Then, when it is determined that the crimping operation is completed, the mud material crimping operation is stopped, and the exit closure 100 is stopped, in which state the exit closure 100 waits until the closing time of the outlet 203.

In the above process, the controller 130 detects and stores the last forward pressure of the filling cylinder 103 in the pressure gauge 250, and when the forward pressure of the filling cylinder 103 is detected to 100 bar or more, the mud ash 114 is Recognize that it is compressed, and below that it is not compressed.

That is, since the no-load forward pressure is 50 bar when the filling cylinder 103 is advanced, and the diameter of the tip tip 117 of the fuselage 102 is smaller than the inside of the outlet body 102, the filling forward is closed when the outlet port is closed. The pressure must be at least 100 bar to push the mud ash from the tip 117 of the outlet closure 100.

In addition, as shown in FIG. 4A in the process of detecting the pressure through the pressure gauge 250 and operating the outlet closure 100, the filling cylinder rod 103a of the outlet closure 100 is a mud material. When passing through the portion of the detection rod 15 located in front of the inlet 124, the sealing ring 105 of the filling cylinder 103 is in contact with the contact surface 32 of the detection rod 15, the upper portion of the detection rod 15 As shown in FIG. 4B, the rectangular bar 17 falls down to the inclined surface 16b and connects the electric circuit of the vibrator 22 which is shorted while the contact point 31 and the contact electric terminal 20 are in contact with each other. ) Begins to tremble, and the trembling time is measured by the time meter 131 of the controller 130.

On the other hand, the control unit 130 detects that the shaking time detected by the time meter 131, the time the seal ring passes through the detection rod 15, that is, for 2 seconds or more, the filling cylinder rod 103a It is determined that is located in front of the mud re-insertion hole (124).

In more detail, the filling cylinder sealing ring 105 has a thickness of 20 mm and a filling cylinder 103 having a length of 1400 mm.

Since the filling cylinder 103 is designed to advance from the rear of the fuselage to the tip of the body at 80 seconds, the time for the sealing ring 105 to pass through the detection rod 15 is 1400 mm: 80 seconds = 20 mm: X. Since it is about 1.2 seconds, if the vibration of the vibrator 22 for two seconds or more is detected by the time measuring device 131, it means that the sealing ring 105 of the filling cylinder 103 has completely passed through the mud re-inlet 124. It is.

On the other hand, as shown in FIG. 4A), if the filling cylinder sealing ring 105 has not yet made contact with the contact surface 32 of the detection rod 15, the detection rod 15 does not move, and in FIG. 4D). When the filling cylinder sealing ring 105 is reversed in the advanced state as described above, the sealing ring 105 touches the opposite direction of the contact surface 32 of the detection rod 15 to form the detection rod 15 standing upright. And, while slightly rising to enable the reverse of the sealing ring 105, in this case, the contact point 31 and the contact electrical terminal 20 is not connected, the vibrator 22 does not operate.

Then, as in the prior art, the real-time filling cylinder movement distance measuring unit 140 measures the movement distance of the cylinder and transmits the value to the blast furnace process computer 141 to the monitor (not shown) of the operator control panel 143.

On the other hand, the closing time of the outlet opening 203, the operator starts the outlet closing device 100 in the operation panel 130, the filling cylinder movement distance measuring unit 140 checks the cylinder movement distance, the filling cylinder 103 is When it is confirmed that the vehicle is advanced, the swing forward automatic valve 208 of the outlet closing device 100 is pushed to make the swing, and the forward pressure of the last filling cylinder 103 is controlled by the pressure gauge 250 in the controller 130. It detects whether it becomes 100 bar or more, and the vibrator 22 starts shaking, and the time measuring device 131 detects 2 seconds or more.

If the measurement time is 2 seconds or more, it is recognized that no trouble occurs in the outlet closing device 100 even when the outlet opening 203 is closed, and the turning forward automatic valve 208 of the outlet closing device is opened and turned. When the opening port 203 is sealed, but the forward pressure of the filling cylinder 103 is 100 bar or more and the time measurement value of the vibrator 22 is not more than 2 seconds, the turning forward of the outlet closing device 100 is performed. Since the automatic valve 208 is not opened, the operator should visually check to make such a satisfactory condition, and for this purpose, the mud material 114 must be crimped manually and re-opening of the outlet port is required. .

This working sequence according to the present invention is shown in FIG. 5, which differs from the flow chart shown in FIG. 8 by measuring the vibration of the vibrator 22 and the mud material filling pressure by the cylinder 103. Detecting whether it is 100 bar or more (210), measuring the moving distance of the cylinder 103 (220), and the step (230) for determining whether the vibrator 22 measurement time is 2 seconds or more is added The opening and closing of the pioneer switch 100 is confirmed.

According to the present invention as described above, it is easy to check the position of the filling cylinder closing position on the operation panel by measuring the length measuring device, the opening closing device by the pressure detection of the filling cylinder and the sealing ring position detection device of the filling cylinder. The muds are not inside the fuselage or the exit closure does not work when the filling cylinder is retracted to prevent facility accidents when the exit is closed.

In addition, since the mud material inlet is sealed at the outlet when the filling cylinder sealing ring of the outlet closure is closed, the amount of mud material introduced into the fuselage of the outlet closure may not be excessively input, and thus the mud material inlet It is effective to solve the problem of the mud material spilled out of the.

Claims (6)

In the apparatus for detecting the position of the sealing ring 105 of the cylinder 103 in the outlet closing device 100 used when closing the outlet 203 of the blast furnace 200, If a hole 5 is formed in the front of the mud material inlet 124 of the body 102 to penetrate the body 102, and the sealing ring 105 of the cylinder 103 is advanced in the hole 5, The lower end is inclined by contacting the sealing ring 105 to operate the vibrator 22 by sending an electrical signal by contacting the electrical contact terminal 20, the upper end is vibrated to the upright position to block the electrical signal And a detection rod (15) for stopping the operation of (22), and configured to detect the position of the sealing ring (105) of the cylinder rod (103a). According to claim 1, wherein the detection rod 15 is the upper side is processed into a square rod 17, a contact point 31 of a predetermined size protrudes on one surface of the square rod 17, the lower portion is rounded A rectangular contact surface 32 having a circular ball 18 shape and having a predetermined size protrudes below the circular ball 18, and the detection rod 15 has a hole 5 in the body 102. Positioned in the working groove 11a inside the body 11 of the detection unit 10 to be inserted into and fixed to the inner surface of the detection unit 10 so that the contact surface 32 of the detection rod 15 protrudes below the operating groove 11a. Slewing control device of the outlet closure, characterized in that configured. The method of claim 2, wherein the operation groove (11a) has a lower side to form a round groove portion (18a) that can be inserted into the circular ball 18 of the detection rod 15, the upper side is gradually wider toward the upper side It has a structure of a rectangular groove portion 17a having an enlarged upper and lower narrow section, one side is a straight wall 16a, and the other side opposite thereto is formed as an inclined surface 16b, while the detection rod 15 In the working groove 11a, the circular ball 18 is located at the round groove 18a, and the square rod 17 is located at the square groove 17a, and the round groove 18a of the operating groove 11a. Slewing control device of the outlet closure is characterized in that the communication with the interior of the fuselage 102 of the outlet opening and closing. The method of claim 2, wherein a spring 40 is interposed between one side surface of the rectangular bar 17 and the inclined surface 16b to resiliently support the square bar 17 toward the straight wall 16a. Slewing control device of exit closure. According to claim 3, The body 11 is the inner surface of the round groove (18a) and the square groove (17a) are each coated with a constant thickness with a gypsum layer member 34, except for the contact terminal 20, respectively. The inside of the turning control device of the exit closure, characterized in that to form an insulating structure through which electricity does not pass. The vibration device of claim 1, wherein the vibrator 22 is electrically connected to the time measuring device 131 of the control unit 130 to measure the shaking time, and the control unit 130 detects the shaking time detected by the time measuring device 131. When it detects that the sealing ring 105 has been made for 2 seconds or more, which is a time passing through the detection rod 15, it is determined that the filling cylinder rod 103a is located in front of the mud re-insertion opening 124. Slewing control of exit closure.

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