JPS5926231B2 - Probe conversion equipment for sunblythe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to equipment for replacing a probe attached to the tip of a sublance during converter operation.

In the operation of a converter furnace, it is essential to measure the temperature inside the furnace and understand its composition.For this reason, conventionally, a sub-lance device as described below was installed above the converter mouth to control the steelmaking process of the converter. Measuring the temperature of temperature control and collecting temperature control components has been carried out (Japanese Patent Application Laid-open No. 4
8-17419).

The sublance device has a probe with a built-in thermocouple and a sample box for temperature measurement and sample collection during converter temperature control, and the probe is attached to the tip and inserted into or from the furnace. A sub-lance for extracting, a sub-lance mounting device for attaching a probe to the tip of the sub-lance, and a probe extracting and discharging device for extracting and discharging the probe that has been used (temperature measurement, sample collection) from the tip of the sub-lance, etc. Such a sublance device automatically replaces the probe with the sublance. However, in the above-mentioned sublance device,
The probe replacement work, which consists of storing probes, taking out the sublance attachment probe from the stored probes, attaching the taken out probe to the tip of the sublance, and extracting and discharging the used probe from the tip of the sublance, can be performed all in one place. Since this is done by a mechanism assembled into a unit, each task must be performed in order, as shown in the explanatory diagram of the probe replacement work in Figure 1, and one cycle of work for replacing the probe is required. The time is 1
It took about 60 seconds.

That is, the probe replacement work is considered to be one cycle, and the following eight steps are sequentially performed. 1. For temperature measurement and/or sample collection, the sublance 2 equipped with the probe 1 is lowered by a lifting device (not shown).

2. The tip of the probe 1 is immersed in the converter 3 to a preset depth for temperature control, and temperature measurement and sample collection are performed by immersion for a predetermined period of time (approximately 5 seconds).

3. Raise the sub-lance 2 to a predetermined position using the lifting device.

4. The used probe 1 is extracted from the tip of the sub-lance 2 by a probe extraction and discharge device (not shown).

5. The used probe 1 is discharged to a predetermined location by the probe extraction and discharge device.

6. Remove the new probe (unused probe) 1 from its storage location.

7. The new probe 1 taken out is moved to a position where it is attached to the tip of the sub-lance 2 by the probe attachment device.

8. The new probe 1 is attached to the tip of the sub-lance 2 by the probe attachment device, and the new probe 1 is placed in a standby state for the next measurement.

In addition, the temperature measurement and sample collection of the steel bath in the converter using the sublance device are not limited to only at the end of refining, but the status of the converter steel bath can also be grasped during the refining process, and it is necessary from then on until the end of refining. Accurately understand the working conditions (setting the amount of width materials such as coolant to be introduced into the furnace, correcting the amount of oxygen for refining, etc.),
This is a so-called converter dynamic control that increases production efficiency by eliminating post-blowing and post-smelting cooling work, and also improves the unit refractory unit of the furnace and the Mn yield. As a result of many experiments, it has been confirmed that the optimal timing to obtain intermediate information about the steel bath in the furnace is about 2 minutes before the scheduled end of refining. Therefore, in order to obtain such intermediate information, it was necessary to limit the time for one cycle of the above-mentioned probe replacement work to within two minutes.

For this reason, there was a problem in that optimal intermediate information could not be obtained in the probe replacement work shown in Figure 1.Furthermore, the sublance device described above was In the very limited space near the top of the hood, there is a main lance device for oxygen injection installed for converter refining, a charging chute device for charging solvent into the converter furnace, and a waste gas hood. It is installed in such a way that it does not interfere with attached equipment, etc., and it is structured so that all the devices for replacing the probe are combined into one unit, which is placed on top of the exhaust gas hood.
From the perspective of easing the load conditions of the converter (waste gas hood), the number of new probes stored is limited, and new probes cannot be supplied during blowing. As a result, workers had to go to the upper part of the furnace more often to carry out work, as well as to have to go to the upper part of the furnace more often for maintenance inspections, which resulted in poor working conditions.

Therefore, the present inventors, in order to solve the above problems,
In conventional probe replacement work, 4 probe replacement work is performed by one unit mechanism.
Each of the above-mentioned operations must be performed in sequence, and therefore, the operation time for one cycle of curve replacement becomes longer.

◎ Since each device for replacing probes in one unit is mounted on the waste gas hood of the converter, the Oθ lance itself is over 20 meters long, making it impossible to improve working conditions. Since the lance is extremely long, it is difficult to increase the lance lifting speed beyond the current level (120 m/min to 150 m/min) because the swing of the lance increases during lifting and lowering, which is dangerous.

Focusing on this point, we conducted research and found that the work of installing and removing new and used probes takes about 110 seconds out of the total work time of about 160 seconds for replacing probes.
2 seconds, and there is still room for its reduction. Therefore, each device for probe replacement, which is integrated into one unit as described above, should be used for each device that performs each task of probe replacement. By arranging the probes separately, each task of replacing the probes can be done in parallel and at the same time.Therefore, the time required for installing and removing the new and used probes can be shortened. It was found that there was no need to install all the equipment for replacing probes, and the number of new probes stored could therefore be increased.

The present invention has been made based on the above knowledge, and provides a sublance probe exchange facility comprising a probe storage/retrieval device, a probe transport device, a probe mounting device, and a probe extraction/discharge device. A take-out device is independently supported above the converter, and a probe rotation positioning device is provided adjacent thereto, the probe transport device includes a probe clamp mechanism provided on a carriage, and the probe mounting device includes: It is characterized by having a probe fixing mechanism that allows the probe to be raised freely.

The present invention will be explained below by way of examples with reference to the drawings. FIG. 2 is a schematic front view of a probe exchange facility to which the present invention is applied, and FIG. 3 is a schematic plan view thereof.

As shown, 1 is a probe, 2 is the probe 1
3 is a converter (furnace body); 4 is a waste gas hood disposed above the converter 3; 5 is a refining lance hole; 6 is a sub-lance hole; A refining lance (main lance) 7 is inserted into the hole 5, and a sub-lance 2 having a probe 1 attached to its tip is inserted into the sub-lance hole 6. The waste gas hood 4 is provided with a probe mounting device 9 and a probe extraction/discharge device 8 located above the sub-lance hole 6.
The probe extracted from the tip of the sub-lance 2 by the above is attached to the bottom fixing plate 14 attached to the exhaust gas hood, as shown in the side view of the probe extraction/ejection device 8 and the probe attachment device 9 in FIG. It is designed to be dropped into the open discharge port 14a and discharged to the outside.

At a position away from the waste gas hood 4, there is a probe storage/retrieval device 10 for storing and retrieving the probe 1 attached to the tip of the sublance 2, and a probe storage/retrieval device 10 connected to the probe storage/retrieval device 10. The probe 1 taken out from the probe storage/retrieval device 10 provided
Probe rotation positioning device 1 for positioning the sample collection hole at the tip of the probe in a predetermined direction (position) required during use when attached to the sublance 2.
1, and a probe conveying device 12 for conveying the probe 1 positioned by the probe rotation positioning device 11 to the probe mounting device 9.

As shown in FIG. 3, the probe extracting/discharging device 8 includes a clamp portion 8a that can be moved forward and backward by a hydraulic cylinder or the like with respect to the position where the sub-lance 2 moves up and down (a position directly above the sub-lance hole 6). The clamp portion 8a
is equipped with a gap through which the probe 1 can be inserted, and a used probe clamp hydraulic cylinder 15 for clamping the probe located in the gap, and when the sub-lance 2 is equipped with the used probe 1. When ascending, the used probe 1 is clamped by operating the cylinder 15 within the gap, with the clamp part 8a advanced from the position shown in FIG. 3 to a position directly above the sub-lance hole 6. It's becoming like that.

In addition, when the clamp part 8a is moving forward, as shown by the solid line in FIG.
It is located at a receiving position for receiving an unused probe 1. On the other hand, the probe storage/retrieval device 10
As shown in the front view in FIG.
The probe 1 is attached to a substrate 25 fixed to the probe 4 and independently supported above the converter 3.
a, as shown in FIG. 3, a moving roller device 10b for moving the probe 1 taken out by the taking out machine 10a to the probe rotation positioning device 11;
As shown in FIG. 5, it is provided with a storage hopper 10c for storing the probe 1. The hopper 10c is
A drum 17 having radially provided grooves 16 for holding a required number of probes 1, and surrounding the outer edge of the drum 17,
The guide 18 has at least its upper and lower ends opened wide enough for the probe 1 to pass, and when storing the probe 1, the tip is successively inserted into the hopper 10c starting from the upper end of the hopper 10c, as shown in FIG. A required number of probes 1 are housed in a strip notch 16 located at the upper end of the probe 10c. Further, the take-out machine 10a is connected to the lower part of the hopper 10c, and a notch 19 having a depth and width approximately the same size as the diameter of the probe 1 is formed at the upper edge of the tip in the longitudinal direction. Also, a takeout machine main body 20 that can move forward and backward in a direction perpendicular to the length direction of the prong 1 housed in the strip notch 16, a rack 21 for moving the main body 20 forward and backward, a pinion 22, and the pinion 2
2 drive hydraulic motor 23, and the probe 1 is moved back from the notch 16 of the drum 17, the tip of which is located at the lowermost take-out position of the hopper 10c. After dropping and storing the main body 2
0 is advanced and taken out to the movement start position to the probe rotation positioning device 11. When the main body 20 moves forward, its outer edge prevents the probe 1 in the strip notch 16 at the extraction position from falling, so the probes 1 are moved one by one as the main body 20 moves forward and backward. Accordingly, the prog is taken out to the movement start position to the rotary positioning device 11. Furthermore, the moving roller device 10b is shown in FIGS. 3 and 6.
As shown in the side view of the probe rotation positioning device 11, there are an upper guide roller 26a and a drive roller 26b that are adjacent to the outside of the hopper 10c and are fixed to the side plate of the hopper 10c. roller 2
Elevating guide rollers 27a and 27b are provided opposite to and below 6a and 26b. The driving roller 26b is equipped with a hydraulic motor 29 for rotating the roller, and the lifting guide rollers 27a, 27b are
Lifting hydraulic cylinders 28a, 28 fixed to the base plate 25
The probe 1 can be moved up and down by the main body 20 to the movement start position to the probe rotation positioning device 11, and the probe 1 is moved up and down by the up and down guide rollers 2.
7a and 27b, the upper guide roller 26a and the drive roller 26b, and the roller 2
7a and 27b (note that in this state, the main body 20 is inserted in order to take out the next probe
Then, by driving the drive roller 26b, the probe is moved to a predetermined position for positioning of the probe rotation positioning device 11. The probe rotation positioning device 11 includes a tip support device 30 for temporarily supporting the tip portion of the probe 1 that has been transferred to a predetermined position for positioning by the moving roller device 10b, and a rear portion of the probe 1. a rear end support mechanism 31 for temporarily supporting the end; and a lifting roller 32 provided between the tip support device 30 and the rear end support mechanism 31 that lifts and lowers simultaneously with the lifting guide rollers 27a and 27b. , the rear end support mechanism 3
1 and a position detector 33 adjacent to the position detector 1.

The tip support device 30 includes a fixing part 34 fixed to the substrate 25, and a fixing part 34 provided on the fixing part 34 so as to be able to move forward and backward in the length direction of the probe 1 transferred to the predetermined positioning position. a dolly 35 for supporting the tip, a dolly hydraulic cylinder 36 attached to the fixed part 34 for moving the dolly 35 forward and backward, and a dolly hydraulic cylinder 36 attached to the dolly 35 for mounting and supporting the tip of the probe 1. A tip support mechanism 37 is provided, and the tip support mechanism 37 includes:
It is equipped with a positioning rotation drive hydraulic motor 38 and a concave tip receiver 39 that is rotated by the drive of the hydraulic motor 38, and the inner side of the tip receiver 39 is formed into a tapered surface. By forming this, when the tip of the probe 1 is attached to the tip receiver 39, the protrusion at the tip does not hit anywhere but is located in the space. The rear end support mechanism 31 includes a convex rear end receiver 40 that is rotatable with respect to its fixed portion 31a.
The probe 1 is provided with a rear end receiving hydraulic cylinder 44 attached to the tip thereof, and the rear end of the probe 1 is mounted and supported on the rear end receiver 40. The lifting roller 32
is a lifting hydraulic cylinder 41 fixed to the base plate 25.
In the raised position, the lifting guide roller 27 of the moving roller device 10b
The probe 1 is transferred together with the probes a and 27b. The position detector 33 includes a detection roller 42 whose rear end presses into contact with the outer peripheral surface of the probe 1 supported by the rear end support mechanism 31, and a force that constantly pushes the roller 42 upward. When the probe 1 supported by the support mechanism 31 rotates, the roller 42 is provided with an elastic mechanism for giving The roller 4 is fitted in due to the pressing force, and as a result, the roller 4 rises during the fitting.
A limit switch (not shown) interlocked with the second support rod 43 is operated to stop the drive of the motor 38 for positioning and rotating the probe 1.
With such a configuration, the moving roller device 10b
1 and the probe 1 transferred to a predetermined position for positioning by the lifting roller 32 (indicated by a in FIG. 6).
is lowered to the support position of the support mechanisms 31 and 37 by lowering the elevating guide roller 27b of the roller device 10b and the elevating roller 32, and then the distal end support roller which has been retreated in advance By moving the truck 35 and the convex rear end receiver 40 forward, the leading end thereof is connected to the leading end support mechanism 37, and the rear end thereof is
The detection roller 42 is mounted and supported by the tip support mechanism 31, and then by rotating the concave tip receiver 39 of the tip support mechanism 37, the detection roller 42 fits into the notch at the rear end and is positioned. It is beginning to be practiced. As shown in the front views in FIGS. 2, 3, and 7, the probe transport device 12 includes a base frame 45 fixed to the side plate of the storage hopper 10c, and the base frame 4.
5, a carriage 46 provided movably in the length direction, a guide rail 45a for moving the carriage 46 provided on the base frame 45, and a carriage 46 provided on the base frame 45;
6, and a clamp mechanism 47 attached to the distal end portion of the holder. The trolley 46 is moved along the length of the base frame 45 by a conveying hydraulic cylinder (cylinder device) 48 fixed to the base frame 45 . The clamp mechanism 47 is connected to the truck 46 by a hydraulic cylinder 49 for lifting and lowering the clamp mechanism fixed to the truck 46.
A pair of clamping arms 50 at the tips of the clamping arms 50 are movable up and down against a clamping hydraulic cylinder 5.
1 to grip or release the probe 1. With this configuration, the probe 1 positioned by the probe rotation positioning device 11 is transported to the probe mounting device 9 in the following manner. That is, the probe rotation positioning device 1
The clamp mechanism 47 located above the probe 1 is lowered by the lifting hydraulic cylinder 49, and the positioned probe 1 is moved to the clamp where the gap has been widened by operating the clamp hydraulic cylinder 51 in advance. gripping arm 50, and then the clamping mechanism 47
After raising the probe 1, the trolley 46 is moved to position the clamp mechanism 47 holding the probe 1 above the probe mounting device 9, and then the probe 1 is lowered and the clamp mechanism 47 is lowered. Therefore, the probe mounting device 9 is lowered to the probe receiving position. The probe mounting device 9 has a rotating frame rotatably provided on the bottom fixing plate 14, as shown in side views in FIGS. 4 and 8, and in a plan view in FIG. A frame rotating hydraulic cylinder 53 provided on the fixing plate 14 for rotating the frame 52, and a probe fixing mechanism 54 provided on the frame 52.

The probe fixing mechanism 54 includes a cushion mechanism 55 for holding the tip of the probe 1, which is provided at both longitudinal ends of the probe fixing frame 52a at the rotating tip of the frame 52, and a cushion mechanism 55 for holding the tip of the probe 1. A guide mechanism 56 for holding the rear end portion of the guide mechanism 56 is provided. The cushion mechanism 5
5 is movable to the fixed frame 57 in a direction orthogonal to the probe fixing frame 52a via a fixed frame 57 fixed to the frame body 52 and a roller 58 provided on the fixed frame 57. A supported cushion stand 59, a hydraulic cylinder 60 for moving the stand 59 attached to the fixed frame 57, and a rod provided on the stand 59 extend in the length direction of the probe fixing frame 52a. It is equipped with a cushion hydraulic cylinder 61 that expands and contracts, and a probe tip holder 62 that is attached to the rod tip of the cylinder 61, and the holder 62 has a tapered surface on the inside. There is. The guide mechanism 56 is fixed to the two-divided probe rear end holder 63 and the frame 52,
and a gear mechanism 64 that supports the holding body 63 so as to be rotatable in an open manner by rotation of a gear, and a gear hydraulic cylinder 65 provided in the gear mechanism 64 for rotationally driving the gear of the gear mechanism 64. The holding body 63
The probe has a guide cone portion 63a for a sublance guide formed in a cone shape in the closed state, and a hole-shaped portion communicating with the guide cone portion 63a, and the rear end of the probe is held in this hole-shaped portion. Holding portion 63b configured to
is formed. The probe mounting device 9 having such a configuration has a rotating frame 52, as shown by a solid line in FIG.
The probe 1 from the probe transport device 12 is placed in the receiving position with the probe fixing frame 52a in a horizontal state.
It is designed to be temporarily fixed in preparation for receiving it and attaching it to the sub-lance 2. That is, first, the cushion table 59 of the cushion mechanism 55 is moved forward, and
The rod of the cushioning hydraulic cylinder 61 is moved backward, and the probe rear end holder 8 is opened and rotated. After lowering the pre-positioned probe 1 held by the mechanism 47 from above, the cushion hydraulic cylinder 6
By moving the probe 1 forward and closing the open probe rear end holder 63, the probe tip holder 62 at the rod end of the hydraulic cylinder 61 moves the tip of the probe 1 to the rear end. The holding portions 63b of the holding body 63 hold the respective portions. Then, by rotating the rotating frame 52, the probe 1 held and fixed on the guide mechanism 56 is raised (upright) from the overturned state, and the sub-lancer is lowered from above the probe 1 in the upright state. 2 is connected to the guide mechanism 5.
The guide cone portion 63a of the probe rear end holder 63 of No. 6 is inserted into the guide cone portion 63a, and the cone portion 63a
The tip of the sub-lance 2 that has entered inside the cone portion 6
The probe 1 is guided by the inner surface of the probe 3a and descends to fit into the rear end portion of the probe 1, thereby allowing the probe 1 to be attached. When attaching the probe 1 to the tip of the sub-lance 2, since the tip of the probe 1 is held in the cushion hydraulic cylinder 61, the sub-lance 2 is attached to the rear end of the probe 1.
The pressing force (impact force) at the time of fitting is the hydraulic cylinder 61.
This is to prevent the probe 1 from being damaged due to excessive force being absorbed by the probe 1. Also,
After the probe 1 is attached, the rod of the cushion hydraulic cylinder 61 of the cushion mechanism 55 is moved backward, and the cushion stand 59 is then moved backward, while the probe rear end holder 63 is rotated open to remove the probe 1 and the sub-probe 1. It is designed so that it does not interfere with the lifting and lowering of 2. Next, the probe replacement work time including measurement work such as temperature measurement of the steel bath and sample collection performed by each device configured as described above is shown in an explanatory diagram of the probe replacement work time shown in Fig. 10. I will explain while referring to it.

That is, after finishing the lowering of the probe 1 by the sublance lifting device, the measurement by the probe 1, and the raising of the probe (used probe) 1, (a
) The operation of extracting and discharging the used probe 1 from the sub-lance 2 by the probe extracting and discharging device 8, and after the completion of the above-mentioned extracting and discharging operation, the unused probe is attached to the tip of the sub-lance by the probe mounting device 9. 1 and waiting for the mounting device 9 to receive the next unused probe 1; (b) probe storage/retrieval device 1;
0 takes out the unused probe 1, then transports the unused probe 1 to the probe rotation positioning device 11 and positions it, and then grabs and lifts the positioned probe by the clamp mechanism 47 of the probe transport device 12. Then, the work of waiting to fix the probe to the probe mounting device 9 and the work shown in (a) and (b) above are performed simultaneously and in parallel, and the rotating frame 5 of the probe mounting device 9 is fixed.
2 is rotated and positioned at the receiving position for receiving the next unused probe 1 from the probe transport device 12, one cycle of the probe replacement work is completed.

The time required for this one cycle was approximately 118 seconds (
Note that the numbers in the figure indicate seconds). As explained above, in this invention, the work of attaching and removing the probe to the tip of the sub-lance, and the work of taking out and positioning the next probe to be used, can be done in parallel, so the work of replacing the probe is much easier than in the past. The time can be shortened and therefore optimal intermediate information of the steel bath in the furnace can be obtained.

Further, since the probe storage/retrieval device is constructed so that it is not placed on the converter waste gas hood, it can be made larger, and therefore, the number of probes stored can be increased and the number of operations for replenishing probes can be reduced. Furthermore, as a result of being able to position the sample collection hole at the tip of the probe, which has not been done in conventional automatic attachment and detachment of probes, it is possible to collect samples without being affected by the oxygen spray of the present lance.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of probe exchange work, Fig. 2 is a schematic front view of the probe exchange equipment to which the present invention is applied, Fig. 3 is a schematic plan view thereof, and Fig. 4 is a probe extraction/ejection device and a probe mounting device. 5 is a front view of the probe storage/retrieval device, FIG. 6 is a side view of the probe rotation positioning device, FIG. 7 is a front view of the probe transport device, and FIGS. 8 and 9 are respectively A side view and a plan view of the probe mounting device, and FIG. 10 are illustrations of the probe replacement work time. 1... Probe, 2... Sublance,
3... Converter, 4... Waste gas hood, 8
・・・・・・Probe extraction/discharge device, 9・・・・・・
Probe mounting device, 10...Probe storage/retrieval device, 11...Probe rotation positioning device, 12...Probe transport device, 45a...
... Guide rail, 46 ... Carriage, 47
... Clamp mechanism, 48 ... Hydraulic cylinder for transportation (cylinder device), 52 ... Rotating frame, 54 ... Probe fixing mechanism.

Claims (1)

[Claims] 1. A sublance probe exchange facility comprising a probe storage/retrieval device, a probe transport device, a probe mounting device, and a probe extraction/discharge device, wherein the probe storage/retrieval device is connected to a converter. The probe is independently supported above and a probe rotation positioning device is provided adjacent thereto, the probe carrying device includes a probe clamping mechanism provided on the carriage, and the probe mounting device includes a probe that can freely raise the probe. Probe exchange equipment for sublance, characterized by being equipped with a fixing mechanism.