KR101584151B1 - Apparatus of control for retrieving chain of sounding weight - Google Patents

Abstract

The present invention relates to an apparatus to control a retrieval of a chain of a sounding weight to measure a charging material of an interior of a blast furnace. The apparatus to control the retrieval of a chain of a sounding weight comprises: a winding unit; a driving motor unit; and a control part. The winding unit allows the chain of the sounding weight to be charged into and discharged from the interior of the blast furnace. The driving motor unit is provided to the winding unit, and supplies torque allowing the winding unit to charge and discharge the sounding weight. The control part controls the driving motor unit. A constricted chain is automatically detected without a visual check by a worker such that work efficiency is increased, thereby improving productivity and preventing an accident.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pull-

The present invention relates to a sounding valve device for drawing a sounding weight chain and more particularly to a sounding valve device for measuring the level of a blast furnace charge while being inserted into a blast furnace, The present invention relates to a control device for detecting a pinch phenomenon and automatically taking out the pinch phenomenon.

1 is a schematic view showing that a sounding device is inserted into the interior of a blast furnace body and operated.

The blast furnace body 10 is a facility for receiving raw materials (iron ore), fuel (coke) and other additives from raw materials and making charcoal through a reduction reaction.

BFG (Blast Furnace Gas) is used for the gas, and the charge charged in the blast furnace interior 11, that is, the raw material and the fuel 11, is maintained in the range of 2.4 to 2.8 kg / Level and its distribution state are identified through sounding weights.

2 is a plan sectional view showing a structure of a chain of a sounding weight and a conventional sounding valve.

As shown in FIG. 2, the sounding weight 21 hangs on the chain 22, measures the level of the charge while ascending or descending. In the abnormal situation, the sounding weight 21 is changed by the charge And the chain 22 is broken due to the high temperature.

In order to change the sounding weight 21 during operation, the chain 22 is lifted above the sounding valve 30 to close the sounding valve 30. If the sounding valve 30 is not checked, When the sounding valve 30 is closed without completely exiting the sounding valve 30, the sounding valve 30 is caught by the chain 22.

3 is a plan sectional view showing that the chain of the sounding weight is inserted when locking the conventional sounding valve.

3, the sounding valve 30 is opened and closed through rotation of a ball 32 having a through hole only in one direction in the body 31 and the body 31. However, When the ball 32 is rotated without complete withdrawal of the chain 22, the chain 22 is stuck, as shown in Fig. 3 (a).

Further, in order to seal the outer peripheral surface of the ball 32 and the inner surface of the body 31 when the ball 32 rotates, a sealing sheet 33 is present at the boundary of the body 31, When the ball 32 rotates, the sealing function is exerted through the contact as shown in FIG. 2 (b).

When the chipping phenomenon occurs as shown in Fig. 3 (a), the sheet 33 is broken by the chain 22, and even after the chain 22 is removed, The sealing function of the valve 30 is deteriorated, thereby causing the problem that the gas flows out through the valve 30.

As a conventional technique for measuring the level in the blast furnace charge, there is a "furnace charge level measuring apparatus (Application No. 20-1997-0040004, hereinafter referred to as " Prior Art 1 ").

Prior art 1 relates to an apparatus for measuring the charge level of a furnace, in which a valve body is horizontally coupled so as to communicate with a single pipe between a manhole and a blast furnace, and a valve body is built in such that the shutoff valve is moved left and right by a valve cylinder; A blocking plate pressing portion penetrating the upper portion of the valve body such that the cylinders are located at the left and right sides of the single pipe, respectively, and a compression plate is attached to the lower end of the rod of the cylinder; A drain pipe connected to the upper end side pipe of the valve body, a valve which is opened and closed by a level switch is attached to the drain pipe, and a water pipe line which is opened and closed by the water pipe is located on the upper side of the drain pipe. And is characterized by comprising a bar-shaped side.

In order to measure the water level of the furnace more accurately, it is necessary to adjust the zero point of the sounding apparatus. For the technical idea, "zero point adjustment apparatus of charging water level measurement sounding furnace (Application No. 20-1998-0025252, Hereinafter referred to as "Prior Art 2") ".

Prior Art 2 is a conveyance truck installed so as to move along a footplate of a reference line and having a spacing plate on the front side thereof; A drum which is supported by a bearing block on a lower plate of the conveying truck, a motor is coupled to an end of the shaft, and a wire rope indicating a ruler is wound; A support table fixed to the upper plate of the conveyance truck and arranged with a pulley guiding the wire rope and having a level indicating needle attached thereto to indicate a ruler of the wire rope; A level measuring weight connected to the distal end of the wire rope and fixed to the center of the wire rope through the proximity sensor rod; And a control panel for sensing a level measurement weight at which a limit switch attached to the tip of the support is lifted or stopping the motor when the proximity sensor rod senses a charge.

There is also a device for measuring the charging position of a charge in a blast furnace (Application No. 20-1998-0025453, hereinafter referred to as "Prior Art 3").

Prior Art 3 accurately measures the charging position and protects the operator from harmful gas by using the position detector of the non-contact type electronic rotary type which has excellent durability and environmental resistance and the charging position transferring device located in the electric room. A weight attached to the chain so as to be loaded in the furnace; A chain drum in which a chain is wound; a drive motor for providing driving force to the chain drum; And an electronic rotary position detector for detecting and detecting the rotational speed of the chain drum at a ratio of 1: 1. Prior Art 3 is a system for measuring the position of a charge charged into a blast furnace by a signal received by a charge level converter and a charge level converter for converting a charging position of the charge into a signal from the rotation speed information of the electronic rotary position detector And a control unit.

These prior arts, however, disclose only sounding devices and their countermeasures for achieving the correct performance, and do not recognize the problems that may arise in practice in the structure of sounding valves for safe demounting of sounding devices Therefore, the technical idea for solving such problems has not been disclosed.

Disclosure of Invention Technical Problem [8] The present invention provides a draw-out control apparatus for a sounding weight, which has been developed to solve the above-described problems, and has the following problems.

First, it is intended to provide a device capable of detecting the squeezing of the chain on the sounding valve and stopping the valve locking operation.

Second, it is intended to provide a device that prevents the sheet of the sounding valve from being broken even when the chain is pressed on the sounding valve.

The solution of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

In order to solve the above-mentioned problem, the draw-out control apparatus according to the present invention has the following problem-solving means.

The drawing control device for a sounding weight according to the present invention is an apparatus for controlling a chain drawing out of a sounding weight for measuring a charge in a blast furnace, the winding unit comprising: a winding unit for loading / unloading a chain of the sounding weight into the blast furnace; A driving motor unit, provided in the winding unit, for providing a torque for allowing the winding unit to enter and exit the sounding weight; And a control unit for controlling the driving motor unit.

The driving motor unit of the spinning weight control device according to the present invention may further include a torque sensing sensor for sensing a change in torque provided to the winding unit.

The drawing control device of the sounding weight according to the present invention is provided with a driving unit provided between the driving motor unit and the winding unit to transmit the torque of the driving motor unit to the winding unit; And an axial variation sensor provided at one side of a rotational axis of the driving unit for sensing a positional variation state of the rotational axis.

The winding unit of the yarn feeding weight control device according to the present invention comprises: a winding shaft for winding a chain of the sounding weight as it is rotated; And a gear coupled to a part of an outer circumferential surface of the winding shaft.

The driving unit of the drawing control device of the sounding weight according to the present invention includes: a worm gear which rotates in engagement with the gear; And a worm gear shaft attached to a rotating shaft of the worm gear and rotated by the driving motor unit.

The drawing control device of the sounding weight according to the present invention includes a sounding valve provided on an outer wall of the blast furnace for opening and closing a bow inlet of the sounding weigher; And a sounding valve opening / closing unit for controlling the opening / closing of the sounding valve.

The control unit of the pulling-out control device according to the present invention receives information on the torque from the torque sensor, and when the change in the torque sensed by the torque sensor corresponds to a threshold torque value or more, i ) Controlling the sounding valve opening / closing part to open the sounding valve, and ii) controlling the winding unit to draw the sounding weight chain from the inside of the blast furnace.

The control unit of the drawing control apparatus according to the present invention receives information on the position fluctuation state of the rotation axis of the driving unit from the shaft variation sensor and determines whether the position of the rotation axis of the driving unit is fluctuated I) controlling the sounding valve opening / closing part so as to open the sounding valve, and ii) controlling the winding unit so that the sounding weight chain is drawn out from the inside of the blast furnace .

The drawing control device of the sounding weight according to the present invention having the above-described structure has the following effects.

First, when the ball of the sounding valve is rotated, a change in the driven torque is sensed to provide an effect of automatically detecting the phenomenon of stucking the chain between the body and the ball.

Second, when the chain is stuck between the body and the ball of the sounding valve, the valve closing is automatically stopped to provide an effect of controlling the withdrawal of the chain.

Third, through the change of the position of the seat, it is possible to prevent sheet breakage even when the chain is stuck, to further maintain the sealing effect and to prevent gas leakage.

Fourth, by preventing the breakage of the sheet, it is possible to prevent gas poisoning by the worker by blocking gas outflow, and also to prevent air pollution.

Fifth, the automatic stitching phenomenon is detected not by the visual inspection of the operator, but it provides the effect of improving productivity and preventing safety accidents.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a schematic view showing that a sounding device is inserted into the interior of a blast furnace body and operated.
2 is a plan sectional view showing a structure of a chain of a sounding weight and a conventional sounding valve.
3 is a plan sectional view showing that the chain of the sounding weight is inserted when locking the conventional sounding valve.
4 is a front cross-sectional view of a draw-out control device as a sounding weight according to a preferred embodiment of the present invention.
5 is a sectional view showing a winding unit which is one component of the present invention.
FIG. 6 is a top cross-sectional view showing the relationship between a control device and a chain for a sounding weight chain according to a preferred embodiment of the present invention. FIG.

The sounding control device according to the present invention may be variously modified and may have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Hereinafter, a drawing control device according to the present invention will be described in detail with reference to the drawings.

4 is a front cross-sectional view of a draw-out control device as a sounding weight according to a preferred embodiment of the present invention. 5 is a sectional view showing a winding unit which is one component of the present invention. FIG. 6 is a top cross-sectional view showing the relationship between a control device and a chain for a sounding weight chain according to a preferred embodiment of the present invention. FIG.

The outflow control apparatus 100 as the sounding weight according to the present invention is for controlling the outgoing of the chain 22 of the sounding weights 21 for measuring the charge of the inside of the blast furnace 11 and includes a winding unit 110; A drive motor unit 130; And a control unit (not shown).

4, the present invention is preferably interlocked with the sounding valve 30 and is positioned adjacent to the sounding valve 30. The sounding valve 30 is controlled by the controller (not shown) 30 may be controlled by controlling the opening / closing part (not shown) of the sounding valve.

The winding unit 110 is configured to wind the sounding weight chain 22 so that the chain 22 is wound around the inside of the blast furnace 11 Or can be taken out of the blast furnace 10.

The drive motor unit 130 is a structure for providing a torque, that is, a rotational force, for allowing the winding unit 110 to wind or unwind the chain 22. [

The drive motor unit 130 is preferably an industrial motor that can be generally used in industry, but it is preferable that the drive motor unit 130 can be remotely controlled by an instruction of another device such as a control device.

The torque provided by the drive motor unit 130 must be provided to such an extent as to support and wind the weight of the entire sounding weight 21 and the sounding weight chain 22, Corresponds to a numerical value that can be arbitrarily set according to the weight of the dumbbell 21 and the sounding weight chain 22.

The drive motor unit 130 can directly transmit the torque for the winding of the winding unit 110, and indirectly through the gear box or the like, as will be described later. This will be described later.

The control unit (not shown) controls the rotation of the driving motor unit 130, that is, the rotation of the motor constituting the driving motor unit 130, to be.

The control unit controls the drive motor unit 130 through the data communication with the drive motor unit 130. The control unit can also be arbitrarily reset through the human machine interface (HMI) of the operator or the manager, The above-described drive motor unit 130 may be controlled through information exchange with a device, a terminal, or the like.

The drive motor unit 130 may further include a torque detection sensor 122 for detecting a change in torque provided to the winding unit 110, as shown in FIG.

When the sounding chain chain 22 is caught by the sounding valve 30, a predetermined resistance is generated at the time of winding the chain 22. In this case, a certain change occurs in the torque to be applied to the chain 22, and the torque sensing sensor 122 detects whether or not the chain 22 is stuck in the sounding valve 30 .

Specifically, the torque sensing sensor 122 has two opposing plates, and these plates are joined in a state of having a certain elasticity, and by sensing the degree to which these plates twist, it is possible to detect a change in torque and a change in torque do.

Specifically, the torque sensor 122 may be provided on the rotating shaft and the extended portion of the drive motor unit 130, and may be provided on the worm gear shaft 121, which will be described later.

In addition, the apparatus 100 according to the present invention may further comprise an axial variation sensor 102.

The shaft change sensor 102 is provided on one side of the rotational shaft 121 of the driving unit 120 and configured to sense whether or not the driving unit rotates along the longitudinal direction of the driving unit rotational shaft 121.

The axis change sensor 102 recognizes the position of one reference point of the rotation axis 121 of the driving unit 120 and senses whether the one reference point is shifted in the axial direction, And the degree of movement.

In this case, the apparatus 100 according to the present invention may further include a driving unit 120, which interconnects the driving motor unit 130 and the winding unit 110, .

5, the driving unit 120 includes: a worm gear; And a worm gear shaft 121.

In addition, the winding unit 110 includes a winding shaft 111; As shown in Fig. 5, the winding shaft 111 constitutes an axis for directly winding the chain 22, and the gear rotates with this winding shaft 111. In this case, as shown in Fig.

The gear may be configured in various forms, but in this case, a spur gear is introduced to interlock with the worm gear described above.

Describing in more detail the subordinate configurations of the driving unit 120, the worm gear is rotated in engagement with the gear of the winding unit 110 so that the worm gear and the rotation axis of the gear are mutually orthogonal (see Fig. 5).

The control unit, which is one component of the present invention, will be described in more detail. The control unit receives information on the torque from the torque sensor 122 as described above.

If the change in the torque sensed by the torque sensor 122 is equal to or greater than the threshold torque value, the control unit controls the sounding valve opening / closing unit to open the sounding valve 30, 110 so that the sounding weight chain 22 is pulled out from the inside 11 of the blast furnace.

That the torque sensing sensor 122 senses a change in torque means that the chain 22 is inserted into the sounding valve 30 and the control unit opens the sounding valve 30 to engage the chain 22 22) can be withdrawn. Thereafter, the control unit controls the winding unit 110 to actually take out the chain 22 as described above.

Here, when the change of the torque sensor 122 is out of the range of the tolerance that can normally occur, or the like, the threshold torque value, that is, the degree of torque of the chain 22 when the chain 22 is caught in the sounding valve 30 The control unit regards the chain 22 as a pinch phenomenon only in the case of a change. Here, the threshold torque value corresponds to a value that can be arbitrarily set in consideration of a change in torque generated due to the insertion of the chain 22 into the sounding valve 30.

In a similar manner, the control unit receives information on the position fluctuation state of the rotation axis of the driving unit 120 from the shaft variation sensor 122. [

The control unit controls the sounding valve opening and closing unit to open the sounding valve 30 when the position of the rotating shaft of the driving unit 120 is judged to be shifted beyond the critical position, So that the sounding weight chain 22 is taken out from the inside 11 of the blast furnace.

5, when the gear does not rotate smoothly, a predetermined movement of the worm gear in the axial direction of the worm gear shaft 121 occurs. In this case, the control unit controls the rotation of the chain 22, As shown in FIG. When the movement of the worm gear shaft 121 is within the tolerance range, it is necessary to prevent the worm gear shaft 121 from being regarded as a phenomenon of pinching the chain 22, The control unit controls the sounding valve opening / closing unit to solve the problem of the chuck 22 being pinched by the control unit.

The critical position error also corresponds to a value that can be arbitrarily set by the person who intends to implement the present invention.

The scope of the present invention is defined by the claims, the parentheses used in the claims are not used for optional limitation but are used for the definite components and the description in parentheses is also interpreted as an essential component .

10: Blast furnace body
11: Blast furnace interior
12: entrance to the hall
20: Sounding device
21: Sounding Chu
22: Chain
30: Sounding valve
31: Body
32: ball
33: seat
34: Ball drive shaft
40:
100: According to the present invention,
101: housing part
102: Axial variation sensor
110: Winding unit
111: Winding shaft
120: Driving unit
121: Worm gear shaft
122: Torque detection sensor
130: Drive motor unit

Claims (9)

1. An apparatus for chain pull-out control of a sounding weight for measuring a charge in a blast furnace,
A winding unit for allowing a chain of the sounding weights to enter and exit into the blast furnace;
A driving motor unit, provided in the winding unit, for providing a torque for allowing the winding unit to enter and exit the sounding weight;
A control unit for controlling the drive motor unit;
A driving unit provided between the driving motor unit and the winding unit for transmitting a torque of the driving motor unit to the winding unit; And
And an axial variation sensor provided at one side of a rotational axis of the driving unit for sensing a position fluctuation state of the rotational axis.
The drive motor unit according to claim 1,
Further comprising a torque sensing sensor for sensing a change in torque provided to the winding unit.
delete The power unit according to claim 1,
A winding shaft for winding a chain of the sounding weight as it is rotated; And
And a gear coupled to a portion of an outer circumferential surface of the winding shaft.
The driving force control apparatus according to claim 4,
A worm gear rotating in engagement with the gear;
And a worm gear shaft attached to a rotating shaft of the worm gear and rotated by the driving motor unit.
3. The apparatus of claim 2,
A sounding valve provided on the outer wall of the blast furnace for opening and closing the inlet of the sounding weight; And
And a sounding valve opening / closing part for controlling the opening / closing of the sounding valve.
7. The apparatus of claim 6,
Receiving information on the torque from the torque sensor,
When the change in the torque sensed by the torque sensor corresponds to a threshold torque value or more,
i) controlling the sounding valve opening / closing part so as to open the sounding valve; and ii) controlling the winding unit to draw the sounding weight chain from the inside of the blast furnace.
2. The apparatus of claim 1,
A sounding valve provided on the outer wall of the blast furnace for opening and closing the inlet of the sounding weight; And
And a sounding valve opening / closing part for controlling the opening / closing of the sounding valve.
9. The apparatus according to claim 8,
When the position of the rotation axis of the driving unit is judged to be changed to be equal to or larger than the critical position,
i) controlling the sounding valve opening / closing part so as to open the sounding valve; and ii) controlling the winding unit to draw the sounding weight chain from the inside of the blast furnace.

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