CN114350876A - Alpha angle correction method and angle measuring tool for material distribution chute of blast furnace - Google Patents
Alpha angle correction method and angle measuring tool for material distribution chute of blast furnace Download PDFInfo
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- CN114350876A CN114350876A CN202210029341.6A CN202210029341A CN114350876A CN 114350876 A CN114350876 A CN 114350876A CN 202210029341 A CN202210029341 A CN 202210029341A CN 114350876 A CN114350876 A CN 114350876A
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Abstract
The invention discloses a blast furnace distributing chute alpha angle correcting method, an alpha angle measuring tool and a distributing chute alpha angle measuring method, wherein the measuring tool comprises a measuring cross rod and a cantilever pasting ruler, the cantilever pasting ruler is rotatably hinged at the end part of the measuring cross rod, a level instrument parallel to the measuring cross rod is fixed at the rear end of the measuring cross rod, the angle of the alpha angle is obtained by pasting the cantilever pasting ruler with the groove surface of the distributing chute and measuring the angle between the cantilever pasting ruler and the measuring cross rod, the data of the alpha angle measured at different positions of the chute are substituted into a distributing program system to calculate the theoretical angle, and finally the actual angle is compared with the theoretical angle calculated by the system to correct; according to the invention, the measurement tool and the measurement method are designed to realize the correction of the alpha angle of the distribution chute of the blast furnace, the angle of the alpha angle of the distribution chute is measured at any time after the alpha angle calibration dial of the distribution chute is damaged, and the correction can be completed even after the alpha angle calibration dial of the distribution chute is damaged.
Description
Technical Field
The invention relates to the field of blast furnace distribution chutes, in particular to an alpha angle correction method and an angle measurement tool for a blast furnace distribution chute.
Background
The alpha angle of the blast furnace distributing chute is the parabolic angle of the raw fuel loaded into the furnace from the distributing device, and is one of the determining factors of the distribution position of the furnace burden on the horizontal plane of the blast furnace, and the distribution of the furnace burden influences the coal gas flow distribution of the blast furnace, thus having great influence on the coal gas utilization rate.
The calibration of the alpha angle of the distribution chute is to compare the actual angle of the inclination angle of the distribution chute (i.e. parabolic angle, the inclination angle of the distribution chute in the following text is the same meaning and is not described repeatedly) with the angle calculated by the furnace top distribution program system, and compare and confirm whether the angle calculated by the furnace top distribution program system is accurate or not, and whether the distribution is carried out according to the distribution angle set by people or not. In daily work, the angle alpha of the distribution chute is calibrated by referring to a dial on a star-shaped gear box, whether the angle of the dial is deviated from the angle calculated by a furnace top distribution program system or not is checked, and then the calibration is carried out.
However, in a production site, the distributing device is usually used for a long time, in the process, the dial is affected by external personnel skills, maintenance methods, environmental changes and other factors, and uncontrollable damage occurs, at this time, the calibration work of the alpha angle of the distributing chute is measured according to a common measuring mode, the calibration work cannot reach the standard purpose, and the distributing angle calibrated in a wrong mode influences the distributing accuracy and cannot meet the requirements of production process development.
Disclosure of Invention
In order to solve the problems, the invention provides a blast furnace distribution chute alpha angle correction method and an angle measuring tool, which can correct the distribution chute alpha angle conveniently and quickly without replacing the distribution chute after a dial of the distribution chute alpha angle is damaged.
In order to solve the problems, the invention is realized by the following scheme:
the utility model provides a blast furnace distributing chute alpha angle measuring tool, is including measuring horizontal pole, cantilever subsides chi, its characterized in that, cantilever subsides chi rotatory hinge in the tip of measuring the horizontal pole, be fixed with the spirit level that is on a parallel with the measuring horizontal pole on the rear end of measuring the horizontal pole.
Furthermore, a stud is welded at the front end of the measuring cross rod, the cantilever pasting ruler is of a long strip-shaped plate structure, the outer side face of the upper end of the cantilever pasting ruler is an arc face, a bolt matched with the stud is welded on the side edge of the lower end of the cantilever pasting ruler, and the cantilever pasting ruler is rotatably hinged at the front end of the measuring cross rod through threaded connection of the bolt and the stud.
Further, the distance from the outer side face of the cantilever pasting ruler far away from the bolt is larger than the distance from the front end face of the measuring cross rod to the stud.
Furthermore, the front end of the measuring cross rod is provided with two symmetrical connecting surfaces, a threaded hole is drilled in the connecting surface, and the vertical direction of the front end of the measuring cross rod is arc-shaped.
Furthermore, the lower end of the cantilever paste ruler is welded with two connecting plates perpendicular to the surface of the cantilever paste ruler, and the distance between the two connecting plates is consistent with the distance between the two connecting surfaces.
And further, drilling a through hole with the nominal diameter consistent with that of the threaded hole on the connecting plate, arranging bolts in the through hole and the threaded hole, and rotatably hinging the connecting plate at the front end of the measuring cross rod through the bolt through hole and the threaded hole.
Furthermore, the measuring cross rods comprise two symmetrical cross rods, the cantilever pasting ruler comprises two symmetrical vertical rods, the two cross rods and the vertical rods are in tail-ending rotary hinge to form a four-bar structure, the two cross rods are parallel to each other, and the two vertical rods are parallel to each other and spliced into a parallelogram.
Further, two horizontal poles include first horizontal pole and second horizontal pole, the screw is seted up to the tip at first horizontal pole both ends, the through-hole is seted up to two tips of second horizontal pole, and the montant adopts threaded connection with first horizontal pole, adopts the pivot to be connected with the second horizontal pole.
Furthermore, the one end of first horizontal pole is fixed with the spirit level that is parallel with first horizontal pole, the one end welding of fixed spirit level on the first horizontal pole has one section auxiliary rod, the auxiliary rod is located the extension line of first horizontal pole, is in same straight line with first horizontal pole.
A method for measuring the alpha angle of the distribution chute by using the measuring tool comprises the following steps,
step 1: after the rotation of the distributing device is stopped, the position of the distributing chute is adjusted, and the distributing chute is adjusted to the position right facing the human hole on the surface of the distributing chute;
step 2: a measuring person operates the measuring tool to stretch the measuring tool into the furnace;
and step 3: the measuring personnel always observe the distance from the front end of the measuring tool to the trough surface of the distribution chute in the process of operating the measuring tool to stretch into the furnace;
and 4, step 4: adjusting the relative position of the cantilever sticking ruler at the front end of the measuring tool and the groove surface of the distribution chute to ensure that the cantilever sticking ruler 2 is stuck on the groove surface of the distribution chute;
and 5: adjusting the horizontal position of the measuring cross rod by observing the level gauge until the measuring cross rod is in a horizontal state;
step 6: and (5) measuring an included angle between the cantilever sticking ruler and the measuring cross bar after the position is adjusted in the step 5 by using a measuring tool, and obtaining the angle of the alpha angle of the distribution chute through the measured included angle.
Further, when the measuring tool with the connecting rod structure is used, the angle between the cantilever pasting ruler and the measuring cross rod is adjusted to be 140-170 degrees before the step 2 is executed.
Further, survey personnel will measure the horizontal pole and slowly stretch into the stove from the manhole after adjusting cantilever and pasting the chi and measuring the angle between the horizontal pole, when the distance between the upper end distance cloth of the cantilever of the measurement horizontal pole front end that stretches into the furnace body was close, the front end that guarantees to measure the horizontal pole through the spirit level is higher than the rear end, the cantilever pastes the chi and continuously is close the cloth chute, after the upper end that the chi was pasted to the cantilever contacted with the groove face of cloth chute, survey personnel continue slowly operate and measure the horizontal pole and stretch into to the stove, it is higher than the rear end to continuously keep measuring the front end of horizontal pole, until cantilever pastes the chi and measures the groove face that articulated department of horizontal pole contacted the cloth chute, measure the horizontal pole and can't end in horizontal migration.
Furthermore, after the cantilever pasting ruler is attached to the groove surface, the position of the measuring cross rod is slowly adjusted from bottom to top through the level gauge until the measuring cross rod is in a horizontal state.
Further, when a measuring tool of a four-bar structure is used, in the step 4, when the cantilever pasting ruler is pasted with the distribution chute, two cross rods continue to extend into the furnace after the front end vertical rods are contacted with the groove surface until the two cross rods do not displace, and at the moment, the front end vertical rods are pasted on the groove surface and are parallel to the groove surface.
Further, continuously keep front end montant and groove face laminating, adjust the position of horizontal pole through observing spirit level operation auxiliary rod, until the horizontal pole is in the horizontality, measure the angle between the montant and the first horizontal pole that are in the rear end, obtain the angle of distribution chute alpha angle through calculating.
A correction method of alpha angle of a distribution chute comprises the following steps;
j1: operating the stopping position of the alpha-angle tilting of the distribution chute, and measuring the alpha-angle of the distribution chute by using the measuring method;
j2: the stopping position of the alpha angle of the distribution chute is adjusted again, namely the distance between the distribution chute and the manhole is adjusted, and the alpha angle of the distribution chute is measured again by using the measuring method;
j3: repeating the work for at least three times, and measuring the alpha angle of the distribution chute at least three different positions;
j4: inputting the data of at least three angles measured in the step J3 into a distribution chute operation control system, operating the distribution chute to tilt at an alpha angle, then stopping the distribution chute at random, and recording the operating alpha angle given by the control system.
J5: measuring the alpha angle of the distribution chute after the step J4 is stopped by using the measuring method for at least three times, and comparing the average value with the running alpha angle given by the control system recorded in the step J4;
j6: if the error between the actually measured alpha angle and the control system operation alpha angle is within 1 degree, the verification on the material distribution chute is successful, the material distribution chute is correct in position, and if the error between the actually measured alpha angle and the control system operation alpha angle is larger than 1 degree, the error between the actually measured alpha angle and the control system operation alpha angle of the material distribution chute is larger, the material distribution is greatly influenced, and all the steps need to be repeated for verification again.
According to the invention, the measurement tool and the measurement method are designed to realize the correction of the alpha angle of the distribution chute of the blast furnace, the alpha angle of the distribution chute is measured at any time after the alpha angle calibration dial of the distribution chute is damaged, and the correction can be completed even after the alpha angle calibration dial of the distribution chute is damaged.
The invention also avoids the damage of the dial of the distribution chute, the whole distribution chute is removed and replaced, the distribution chute can be continuously used without replacement, and the production efficiency of the blast furnace is improved.
The invention is convenient to disassemble and assemble, has no overhigh technical requirement on a user and has high safety.
Drawings
The invention is further illustrated by the figures and the detailed description.
FIG. 1 is a schematic side view of a measuring tool according to an embodiment of the present invention
FIG. 2 is a schematic top view of a measuring tool according to an embodiment of the present invention
FIG. 3 is a schematic side view of a second measurement tool according to an embodiment of the present invention
FIG. 4 is a schematic top view of a second metrology tool in accordance with an embodiment of the present invention
FIG. 5 is a schematic view of a third measuring tool according to an embodiment of the present invention
In the figure: 1-measuring cross bar, 2-cantilever sticking ruler, 3-level meter, 101-nut, 102-stud, 103-connecting surface, 104-threaded hole, 105-connecting plate, 106-bolt, 110-first cross bar, 111-second cross bar, 112-bolt hole and 113-auxiliary bar.
Detailed Description
A tool for measuring the alpha angle of a distribution chute of a blast furnace comprises a measuring cross rod 1 which is taken as a 0-degree datum line when the angle is measured and extends into the furnace from a manhole, and a cantilever pasting ruler 2 which is rotatably hinged at the front end of the measuring cross rod 1, wherein a level 3 which is parallel to the measuring cross rod 1 is fixed at the rear end of the measuring cross rod 1.
A method for correcting the alpha angle of the distribution chute by using the measuring tool and the measuring method, which comprises the following specific steps;
j1: operating the tilting stop position of the alpha angle of the distribution chute, and measuring the alpha angle of the distribution chute by using the measuring method;
j2: adjusting the tilting stop position of the alpha angle of the distribution chute again, and measuring the alpha angle of the distribution chute again by using the measuring method;
j3: repeating the work for at least three times, and measuring the alpha angle of the distribution chute at least three different tilting positions;
j4: inputting the data of at least three alpha angles measured in the step J3 into a distribution chute operation control system, operating the inclination of the alpha angles of the distribution chute, then stopping the distribution chute at random, and recording the operation alpha angle given by the control system.
J5: measuring the alpha angle of the distribution chute after the step J4 is stopped by using the measuring method for at least three times, and comparing the average value with the running alpha angle given by the control system recorded in the step J4;
j6: if the error between the actually measured alpha angle and the control system operation alpha angle is within 1 degree, the verification on the material distribution chute is successful, the material distribution chute is correct in position, and if the error between the actually measured alpha angle and the control system operation alpha angle is larger than 1 degree, the error between the actually measured alpha angle and the control system operation alpha angle of the material distribution chute is larger, the material distribution is greatly influenced, and all the steps need to be repeated for verification again.
Example one
A stud 101 is welded at the front end of a measuring cross rod 1 of the measuring tool used in the embodiment, and a bolt 102 matched with the stud 101 is welded at the side edge of the lower end of a cantilever tape 2.
The cantilever sticking ruler 2 is rotatably hinged at the front end of the measuring cross rod 1 through the matching of the bolt 102 and the stud 101, and at least 20 N.m of torque is driven when the bolt 102 is screwed into the stud 101, so that the cantilever sticking ruler 2 and the measuring cross rod cannot easily rotate.
The distance from the outer side surface of the cantilever sticking ruler 2 far away from the measuring cross rod 1 to the bolt 102 is larger than the distance from the front end surface of the measuring cross rod 1 to the stud 101, so that the outer side surface of the cantilever sticking ruler 2 is guaranteed to protrude a point compared with the measuring cross rod 1, and when the angle alpha is measured, the outer side surface of the cantilever sticking ruler 2 can be completely attached to the groove surface of the distribution chute.
The cantilever sticking ruler 2 is of a long strip-shaped plate structure, the outer side surface of the upper end of the cantilever sticking ruler is an arc surface, and jamming cannot occur in the process of contacting with a chute.
The measurement of the alpha-called angle of the distribution chute by using the measurement tool of the embodiment comprises the following steps;
s1: after the material distributor stops rotating, the position of the distribution chute is adjusted, and the distribution chute is adjusted to a manhole;
s2: the angle between the cantilever sticking ruler 2 and the measuring cross rod 1 is adjusted to be about 140-170 degrees at a larger angle;
s3: the measurer slowly extends the measuring cross rod 1 with the angle between the cantilever sticking ruler 2 and the measuring cross rod 1 adjusted in the step S2 into the furnace from the manhole, and the measurer constantly observes the distance between the upper end of the cantilever sticking ruler 2 and the distribution chute in the process;
s4: when the distance between the upper end of the cantilever sticking ruler 2 at the front end of the measuring cross rod 1 extending into the furnace body and the cloth is close in the step S3, the front end of the measuring cross rod 1 is higher than the rear end through the level 3;
s5: in the step S4, the cantilever attaching ruler 2 is continuously close to the distribution chute, after the upper end of the cantilever attaching ruler 2 is contacted with the groove surface of the distribution chute, a measurer continuously and slowly operates the measuring cross rod 1 to extend into the furnace, the front end of the measuring cross rod 1 is continuously kept higher than the rear end until the hinged part of the cantilever attaching ruler 2 and the measuring cross rod 1 is contacted with the groove surface of the distribution chute, and the measuring cross rod 1 cannot move horizontally;
s6: at the moment, the outer side surface of the cantilever sticking ruler 2 is parallel to and attached to the groove surface of the distribution chute, and after the cantilever sticking ruler 2 is operated by the measuring cross rod 1 to be attached to the groove surface of the distribution chute in the step S5, the horizontal position of the rear end of the measuring cross rod 1 is adjusted, and the measuring cross rod 1 is adjusted to be kept horizontal by the level meter 3;
s7: after the leveling in the step S6 is adjusted, slowly separating the measuring horizontal bar 1 from the groove surface of the distribution chute, and then continuously and slowly drawing out the measuring horizontal bar 1;
s8: and (4) measuring an included angle between the cantilever tape 2 at the front end of the measuring cross bar 1 extracted in the step S7 and the measuring cross bar 1 by using a measuring tool, wherein the angle alpha is obtained by subtracting 90 degrees from the measured included angle.
In the measuring method, in the step S2, the included angle between the cantilever sticking ruler 2 and the measuring cross rod 1 is adjusted to 145 degrees, so that when the cantilever sticking ruler 2 is stretched into the furnace, the upper end of the cantilever sticking ruler 2 is firstly contacted with the chute side groove surface.
In the measuring method, the speed of the cantilever sticking ruler 2 in the early stage of stretching in the step S3 can be relatively increased by a little, about 1cm/S, when the cantilever sticking ruler 2 is observed to be about 20cm away from the chute, the stretching speed is slowed down, the stretching speed is controlled to be about 3mm/S, the front end is always higher than the rear end according to the step S4, and the cantilever sticking ruler 2 is stuck on the chute surface.
In the above-mentioned measuring method, when step S5 is executed, the horizontal position of the measuring cross bar 1 is adjusted from the bottom to the top, and the included angle between the cantilever attaching ruler 2 and the measuring cross bar 1 is measured after the horizontal bar is leveled.
According to the method, the alpha angle is tilted, the data of the alpha angle of the distribution chute measured three times at a position, close to the manhole, of the distribution chute is taken as the angle of the alpha angle, the data of the alpha angle of the distribution chute measured three times at a position, away from the manhole, of the center of the furnace body is taken as the angle of the alpha angle, and the data of the alpha angle of the distribution chute measured three times at a position, close to the center of the furnace body, are taken as the angle of the alpha angle.
And writing the values of the alpha angles measured at the three positions into a material distribution program system, driving the material distribution chute to tilt the alpha angle by the material distribution system according to the measured data, stopping at random, recording the alpha angle of the material distribution chute calculated by the material distribution program system at the moment, measuring the actual alpha angle of the material distribution chute at the moment again, and comparing the measured alpha angle with the alpha angle calculated by the material distribution program system.
Example two
In this embodiment, two symmetrical connecting surfaces 103 are processed at the front end of the measuring cross rod 1, a threaded hole 104 is drilled in the connecting surface 103, and the front end of the measuring cross rod 1 is arc-shaped in the vertical direction.
The cantilever sticking ruler 2 is of a long strip-shaped plate structure, the outer side face of the upper end of the cantilever sticking ruler is an arc face, two connecting plates 105 perpendicular to the surface of the cantilever sticking ruler 2 are welded at the lower end of the cantilever sticking ruler, and the distance between the two connecting plates 105 is consistent with the distance between the two connecting faces 103.
A through hole with the same nominal diameter as that of the threaded hole 104 is drilled in the connecting plate 105, the connecting plate 105 is rotatably hinged to the front end of the measuring cross rod 1 through the through hole and the threaded hole 104 through a bolt 106, the threaded hole 104 serves as a fixing base point of the bolt 106, and the bolt 106 and the pretightening force of the threaded hole 104 are driven into pretightening force of 20 N.m.
The measurement of the alpha-called angle of the distribution chute by using the measurement tool of the embodiment comprises the following steps;
s1: after the material distributor stops rotating, the position of the distribution chute is adjusted, and the distribution chute is adjusted to a manhole;
s2: the angle between the cantilever sticking ruler 2 and the measuring cross rod 1 is adjusted to be about 140-170 degrees at a larger angle;
s3: the measurer slowly extends the measuring cross rod 1 with the angle between the cantilever sticking ruler 2 and the measuring cross rod 1 adjusted in the step S2 into the furnace from the manhole, and the measurer constantly observes the distance between the upper end of the cantilever sticking ruler 2 and the distribution chute in the process;
s4: when the distance between the upper end of the cantilever sticking ruler 2 at the front end of the measuring cross rod 1 extending into the furnace body and the cloth is close in the step S3, the front end of the measuring cross rod 1 is higher than the rear end through the level 3;
s5: in the step S4, the cantilever attaching ruler 2 is continuously close to the distribution chute, after the upper end of the cantilever attaching ruler 2 is contacted with the groove surface of the distribution chute, a measurer continuously and slowly operates the measuring cross rod 1 to extend into the furnace, the front end of the measuring cross rod 1 is continuously kept higher than the rear end until the hinged part of the cantilever attaching ruler 2 and the measuring cross rod 1 is contacted with the groove surface of the distribution chute, and the measuring cross rod 1 cannot move horizontally;
s6: at the moment, the outer side surface of the cantilever sticking ruler 2 is parallel to and attached to the groove surface of the distribution chute, and after the cantilever sticking ruler 2 is operated by the measuring cross rod 1 to be attached to the groove surface of the distribution chute in the step S5, the horizontal position of the rear end of the measuring cross rod 1 is adjusted, and the measuring cross rod 1 is adjusted to be kept horizontal by the level meter 3;
s7: after the leveling in the step S6 is adjusted, slowly separating the measuring horizontal bar 1 from the groove surface of the distribution chute, and then continuously and slowly drawing out the measuring horizontal bar 1;
s8: and (4) measuring an included angle between the cantilever tape 2 at the front end of the measuring cross bar 1 extracted in the step S7 and the measuring cross bar 1 by using a measuring tool, wherein the angle alpha is obtained by subtracting 90 degrees from the measured included angle.
In the measuring method, in the step S2, the included angle between the cantilever sticking ruler 2 and the measuring cross rod 1 is adjusted to 145 degrees, so that when the cantilever sticking ruler 2 is stretched into the furnace, the upper end of the cantilever sticking ruler 2 is firstly contacted with the chute side groove surface.
In the measuring method, in the step S2, the included angle between the cantilever sticking ruler 2 and the measuring cross rod 1 is adjusted to be 135 degrees, and when the cantilever sticking ruler is stretched into the furnace, the upper end of the cantilever sticking ruler 2 is firstly contacted with the side groove surface of the chute.
In the measuring method, the speed of the cantilever sticking ruler 2 in the early stage of stretching in the step S3 can be relatively increased by a little, about 1cm/S, when the cantilever sticking ruler 2 is observed to be about 20cm away from the chute, the stretching speed is slowed down, the stretching speed is controlled to be about 3mm/S, the front end is always higher than the rear end according to the step S4, and the cantilever sticking ruler 2 is stuck on the chute surface.
In the above-mentioned measuring method, when step S5 is executed, the horizontal position of the measuring cross bar 1 is adjusted from the bottom to the top, and the included angle between the cantilever attaching ruler 2 and the measuring cross bar 1 is measured after the horizontal bar is leveled.
According to the method, the alpha angle is tilted, the data of the alpha angle of the distribution chute measured five times at a position, close to the manhole, of the distribution chute is averaged to be used as the angle of the alpha angle, the data of the alpha angle of the distribution chute measured five times at a position, close to the center of the furnace body, of the center of the manhole, of the distribution chute measured three times are averaged to be used as the angle of the alpha angle, and the data of the alpha angle of the distribution chute measured five times at a position, close to the center of the furnace body, of the distribution chute are averaged to be used as the angle of the alpha angle.
And writing the values of the alpha angles measured at the three positions into a material distribution program system, driving the material distribution chute to tilt the alpha angle by the material distribution system according to the measured data, stopping at random, recording the alpha angle of the material distribution chute calculated by the material distribution program system at the moment, measuring the actual alpha angle of the material distribution chute at the moment again, and comparing the actual alpha angle with the alpha angle calculated by the material distribution program system.
EXAMPLE III
The difference between this embodiment and the other embodiments is that the measuring cross rod 1 includes two symmetrical cross rods, the cantilever attaching ruler 2 includes two symmetrical vertical rods, and the two cross rods and the vertical rods are in a final rotation hinge to form a four-bar structure, wherein the two cross rods are parallel to each other, and the two vertical rods are parallel to each other and spliced into a parallelogram.
The two cross rods are divided into a first cross rod 110 and a second cross rod 111 which are equal in length, screw holes 112 are formed in the end portions of the two ends of the first cross rod 110, and through holes are formed in the two end portions of the second cross rod 111.
The two vertical rods are hinged to the end portions of the cross rods in the same mode, and the vertical rods are connected with the first cross rod 110 through threads and connected with the second cross rod 111 through rotating shafts.
The bolt pretightening force at the threaded connection part of the vertical rod and the first cross rod 110 is larger than the moment of 20 N.m.
One end of the first cross bar 110 is fixed with a level 3 parallel to the first cross bar 110.
One end of the first cross rod 110, which is used for fixing the level 3, is welded with a section of auxiliary rod 113, and the auxiliary rod 113 is positioned on an extension line of the first cross rod 110 and is positioned on the same straight line with the first cross rod 110.
When the measuring tool of the embodiment is used, the measuring method comprises the following steps:
s1: after the material distributor stops rotating, the position of the distribution chute is adjusted, and the chute surface of the distribution chute is adjusted to be opposite to the manhole;
s2: a measuring person operates the measuring tool of the embodiment to stretch into the furnace;
s3: the distance and the relative position between the vertical rod at the front end and the distribution chute need to be observed all the time by a measurer in the process that the measuring tool extends into the furnace;
s4: the vertical rod at the front end of the measuring tool is propped against the groove surface of the distribution chute, the four-bar linkage structure of the embodiment is operated, the first cross rod 110 and the second cross rod 111 horizontally extend into the furnace until the two cross rods cannot extend into the furnace continuously, and the vertical rod at the front end is attached to the groove surface and is parallel to the groove surface;
s5: after the front vertical bar is parallel to the groove surface in step S4, the auxiliary bar 113 is operated to adjust the position of the cross bar;
s6: adjusting the cross bar operated in step S5 to a horizontal state by observing the level meter 3; step S6, after the cross bars are adjusted to be horizontal, the two cross bars are both in a horizontal state, the front end vertical bar is parallel to the groove surface, the rear end vertical bar is parallel to the front end vertical bar, and the rear end vertical bar is also parallel to the front end vertical bar;
s7: and (3) measuring an included angle between the vertical rod at the rear end of the horizontal position and the first cross rod 110 by using a measuring tool, wherein the included angle is complementary with the alpha angle of the chute, and the measured angle is subtracted from 90 degrees to obtain the alpha angle.
According to the method, the alpha angle is tilted, the data of the alpha angle of the distribution chute measured five times at a position, close to the manhole, of the distribution chute is averaged to be used as the angle of the alpha angle, the data of the alpha angle of the distribution chute measured five times at a position, close to the center of the furnace body, of the center of the manhole, of the distribution chute measured three times are averaged to be used as the angle of the alpha angle, and the data of the alpha angle of the distribution chute measured five times at a position, close to the center of the furnace body, of the distribution chute are averaged to be used as the angle of the alpha angle.
And writing the values of the alpha angles measured at the three positions into a material distribution program system, driving the material distribution chute to tilt the alpha angle by the material distribution system according to the measured data, stopping at random, recording the alpha angle of the material distribution chute calculated by the material distribution program system at the moment, measuring the actual alpha angle of the material distribution chute at the moment again, and comparing the actual alpha angle with the alpha angle calculated by the material distribution program system.
According to the invention, the measurement tool and the measurement method are designed to realize the correction of the alpha angle of the distribution chute of the blast furnace, the angle of the alpha angle of the distribution chute is measured at any time after the alpha angle calibration dial of the distribution chute is damaged, and the correction can be completed even after the alpha angle calibration dial of the distribution chute is damaged.
The invention also avoids the damage of the dial of the distribution chute, and then the whole distribution chute is removed, maintained and replaced, and the distribution chute can be continuously used without maintenance and replacement, thereby improving the production efficiency of the blast furnace.
The invention is convenient to disassemble and assemble, has no overhigh technical requirement on a user and has high safety.
Claims (8)
1. The alpha angle measuring tool for the distribution chute of the blast furnace comprises a measuring cross rod (1) and a cantilever pasting ruler (2), and is characterized in that the cantilever pasting ruler (2) is rotatably hinged to the end part of the measuring cross rod (1), and a level (3) parallel to the measuring cross rod (1) is fixed at the rear end of the measuring cross rod (1); the front end of the measuring cross rod (1) is welded with a stud (101), the cantilever sticking ruler (2) is of a long strip-shaped plate structure, the outer side surface of the upper end of the cantilever sticking ruler is an arc surface, the side edge of the lower end of the cantilever sticking ruler (2) is welded with a bolt (102) matched with the stud (101), and the cantilever sticking ruler (2) is rotatably hinged to the front end of the measuring cross rod (1) through the threaded connection of the bolt (102) and the stud (101); the distance from the outer side surface of the cantilever pasting ruler (2) far away from the measuring cross rod (1) to the bolt (102) is larger than the distance from the front end surface of the measuring cross rod (1) to the stud (101).
2. The alpha angle measuring tool for the blast furnace distribution chute according to claim 1, characterized in that the front end of the measuring cross rod (1) is provided with two symmetrical connecting surfaces (103), a threaded hole (104) is drilled at the connecting surface (103), and the front end of the measuring cross rod (1) is arc-shaped in the vertical direction; the lower end of the cantilever sticking ruler (2) is welded with two connecting plates (105) which are perpendicular to the surface of the cantilever sticking ruler (2), and the distance between the two connecting plates (105) is consistent with the distance between the two connecting surfaces (103); and drilling a through hole with the nominal diameter consistent with that of the threaded hole (104) on the connecting plate (105), arranging a bolt (106) in the through hole and the threaded hole (104), and rotatably hinging the connecting plate (105) at the front end of the measuring cross rod (1) through the through hole of the bolt (106) and the threaded hole (104).
3. The tool for measuring the alpha angle of the blast furnace distribution chute according to claim 1, wherein the measuring cross rod (1) comprises two symmetrical cross rods, the cantilever sticking ruler (2) comprises two symmetrical vertical rods, and the two cross rods and the vertical rods are in tail end rotation hinge joint to form a four-bar structure, wherein the two cross rods are parallel to each other, and the two vertical rods are parallel to each other and spliced into a parallelogram; the two cross rods comprise a first cross rod (110) and a second cross rod (111), screw holes (112) are formed in the end portions of the two ends of the first cross rod (110), through holes are formed in the two end portions of the second cross rod (111), the vertical rod is in threaded connection with the first cross rod (110), and the vertical rod is connected with the second cross rod (111) through a rotating shaft.
4. The alpha angle measuring tool of the blast furnace distribution chute of claim 3, characterized in that one end of the first cross bar (110) is fixed with a level (3) parallel to the first cross bar (110), one end of the first cross bar (110) fixed with the level (3) is welded with a section of auxiliary rod (113), and the auxiliary rod (113) is positioned on the extension line of the first cross bar (110) and is positioned on the same straight line with the first cross bar (110).
5. A method of measuring the alpha angle of a distribution chute using the measuring tool of claim 1, comprising the steps of,
step 1: after the rotation of the distributing device is stopped, the position of the distributing chute is adjusted, and the distributing chute is adjusted to the position right facing the human hole on the surface of the distributing chute;
step 2: a measuring person operates the measuring tool to stretch the measuring tool into the furnace; the measuring personnel always observes the distance from the front end of the measuring tool to the groove surface of the distribution chute in the process of operating the measuring tool to stretch into the furnace
And step 3: adjusting the relative position of the cantilever sticking ruler (2) at the front end of the measuring tool and the groove surface of the distribution chute to ensure that the cantilever sticking ruler 2 is stuck on the groove surface of the distribution chute
And 4, step 4: the horizontal position of the measuring cross rod (1) is adjusted by observing the level gauge (3) until the measuring cross rod is in a horizontal state;
and 5: measuring an included angle between the cantilever sticking ruler (2) and the measuring cross bar (1) after the position is adjusted in the step 5 by using a measuring tool, and obtaining an angle of an alpha angle of the distribution chute according to the measured included angle; when the measuring tool with the connecting rod structure is used, the angle between the cantilever sticking ruler (2) and the measuring transverse rod (1) is adjusted to be 140-170 degrees before step 2 is executed.
6. The method for measuring the alpha angle of the distribution chute according to the claim 5, characterized in that after the angle between the cantilever sticking ruler (2) and the measuring cross bar (1) is adjusted by the measuring personnel, the measuring cross bar (1) is slowly extended into the furnace from the manhole, when the distance between the upper end of the cantilever sticking ruler (2) extended into the front end of the measuring cross bar (1) of the furnace body and the distribution is close, the front end of the measuring cross rod (1) is higher than the rear end through the level gauge (3), the cantilever sticking ruler (2) is continuously close to the distribution chute, after the upper end of the cantilever sticking ruler (2) is contacted with the groove surface of the distribution chute, a measurer continues to slowly operate the measuring cross rod (1) to extend into the furnace, the front end of the measuring cross rod (1) is continuously kept higher than the rear end until the hinged part of the cantilever sticking ruler (2) and the measuring cross rod (1) is contacted with the groove surface of the distribution chute, and the measuring cross rod (1) cannot move horizontally; after the cantilever pasting ruler (2) is pasted on the groove surface, the position of the measuring cross rod (1) is slowly adjusted from bottom to top through the level meter (3) until the measuring cross rod (1) is in a horizontal state.
7. The method for measuring the alpha angle of the distribution chute according to claim 5, characterized in that when a measuring tool with a four-bar structure is used, and when the cantilever attaching ruler (1) is attached to the distribution chute in step 3, after the front end vertical rod is contacted with the groove surface, the two cross rods are continuously extended into the furnace until the two cross rods do not displace, and at the moment, the front end vertical rod is attached to the groove surface and is parallel to the groove surface; continuously keeping the front end vertical rod to be attached to the groove surface, adjusting the position of the cross rod by observing the operation auxiliary rod (113) of the level meter (3) until the cross rod is in a horizontal state, measuring the angle between the vertical rod at the rear end and the first cross rod (110), and calculating to obtain the angle of the alpha angle of the distribution chute.
8. A correction method of alpha angle of a distribution chute comprises the following steps;
j1: operating the stopping position of the alpha-angle tilting of the distribution chute, and measuring the alpha-angle of the distribution chute by using the measuring method;
j2: the stopping position of the alpha angle of the distribution chute is adjusted again, namely the distance between the distribution chute and the manhole is adjusted, and the alpha angle of the distribution chute is measured again by using the measuring method;
j3: repeating the work for at least three times, and measuring the alpha angle of the distribution chute at least three different positions;
j4: inputting the data of at least three angles measured in the step J3 into a distribution chute operation control system, operating the distribution chute to tilt at an alpha angle, then stopping the distribution chute at random, and recording the operating alpha angle displayed by the control system;
j5: measuring the alpha angle of the distribution chute after the step J4 is stopped by using the measuring method for at least three times, and comparing the average value with the running alpha angle displayed by the control system recorded in the step J4;
j6: if the error between the actually measured alpha angle and the control system operation alpha angle is within 1 degree, the verification on the material distribution chute is successful, the material distribution chute is correct in position, and if the error between the actually measured alpha angle and the control system operation alpha angle is larger than 1 degree, the error between the actually measured alpha angle and the control system operation alpha angle of the material distribution chute is larger, the material distribution is greatly influenced, and all the steps need to be repeated for verification again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210029341.6A CN114350876A (en) | 2022-01-12 | 2022-01-12 | Alpha angle correction method and angle measuring tool for material distribution chute of blast furnace |
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| CN202210029341.6A CN114350876A (en) | 2022-01-12 | 2022-01-12 | Alpha angle correction method and angle measuring tool for material distribution chute of blast furnace |
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Application publication date: 20220415 |