CN116875755A - Operation method and system for reducing stuck drill at iron notch - Google Patents
Operation method and system for reducing stuck drill at iron notch Download PDFInfo
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- CN116875755A CN116875755A CN202310851021.3A CN202310851021A CN116875755A CN 116875755 A CN116875755 A CN 116875755A CN 202310851021 A CN202310851021 A CN 202310851021A CN 116875755 A CN116875755 A CN 116875755A
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- drilling
- tapping machine
- drill bit
- tap hole
- drill
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 168
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000005553 drilling Methods 0.000 claims abstract description 182
- 238000010079 rubber tapping Methods 0.000 claims abstract description 164
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 239000011261 inert gas Substances 0.000 claims abstract description 45
- 238000012544 monitoring process Methods 0.000 claims abstract description 38
- 239000002893 slag Substances 0.000 claims abstract description 27
- 239000011148 porous material Substances 0.000 claims abstract description 15
- 238000007664 blowing Methods 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 13
- 230000001133 acceleration Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000010926 purge Methods 0.000 claims description 9
- 238000000889 atomisation Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000010408 sweeping Methods 0.000 claims description 7
- 239000006227 byproduct Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000011017 operating method Methods 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 230000035515 penetration Effects 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 abstract 5
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 206010024796 Logorrhoea Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- -1 untimely withdrawal Chemical compound 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
Abstract
The invention provides an operation method and a system for reducing a stuck drill at a tap hole, wherein the operation method for reducing the stuck drill at the tap hole comprises the following steps: s1: controlling the tapping machine to reach the corresponding machine position of the iron notch, and enabling the drill head of the tapping machine to be aligned with the primary drill in the center of the mud sleeve to position the iron notch pore canal; s2: controlling a traveling motor to enable the tapping machine drill bit to drill into the hearth direction, and simultaneously controlling high-pressure inert gas to sweep the tap hole duct; s3: and monitoring the penetration depth and penetration speed of the tapping machine drill bit and blowing out the amount of the drilling stemming from the tap hole channel. According to the invention, through controlling the drilling of the drill bit and regulating and controlling atomized water, the probability of sticking the drill at the tap hole is reduced, the time for opening the tap hole is reduced, the effective iron discharging time of the tap hole is ensured, the positive point rate and the drill penetration rate of the tap hole are improved, the oxygen burning frequency of the tap hole is reduced, the labor intensity of workers is reduced, the timely discharge of slag iron is facilitated, and conditions are created for long-term stable and smooth running of the blast furnace.
Description
Technical Field
The invention relates to the technical field of tapping machines, in particular to an operation method and system for reducing stuck drills at a tap hole.
Background
When the existing tapping machine is used for tapping the iron notch, firstly, the tapping machine is started to rotate and shake, the drilling is performed for 50mm in a point-driven manner, and a nitrogen purging manual valve is opened; when the drilling depth is more than 500mm, opening atomized water to cool the drill bit; and after the iron notch is drilled through smoothly, the tapping machine is withdrawn from the iron notch channel and returned to the standby position, and atomized water and nitrogen purging of the tapping machine are closed. And after the slag iron is discharged, the tap hole channel is driven into stemming for plugging.
In the process of drilling stemming into the tapping machine, the stemming is positioned at different depths in the tap hole channel, the temperatures of the stemming are also different, and the deeper the depth is, the higher the temperature is. With the increase of the drilling depth of the tapping machine drill bit, the breaking strength of stemming is reduced, the creep property at high temperature is increased, and the drill stemming scraps blown out from the tap hole channel are changed into particles from fine powder. When the drilling depth exceeds 2800mm, the temperature of a tap hole channel exceeds 1000 ℃, atomized water for cooling a drill bit is immediately vaporized into steam under the action of high temperature, and the steam is combined with drilling stemming particles to become large slag blocks which are accumulated in the tap hole channel; or the slag iron is immediately changed into solid from liquid state to be wrapped on the drill bit and the drill rod after the iron notch is drilled and penetrated by steam, the drill rod cannot be withdrawn smoothly, the iron notch is stuck with the drill rod, oxygen is forced to burn, the labor intensity is increased, the opening time is prolonged, the positive point rate of the iron notch and the drill penetration rate of the drill rod are reduced, and further the slag iron discharge and the stable and smooth running of the blast furnace are affected.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is to provide an operation method and system for reducing the sticking of the tap hole, which are used for solving the problems that atomized water for cooling the drill bit is vaporized into steam at high temperature in the prior art, and is combined with the crushed stemming particles to form a large slag, and the slag is accumulated in the tap hole channel, or the slag iron is immediately changed into solid state from liquid state when being cooled by the steam after being drilled through the tap hole, and is wrapped on the drill bit and the drill rod, so that the drill rod cannot be withdrawn smoothly, the tap hole is stuck, oxygen is forced to burn, the labor intensity is increased, the opening time is prolonged, the tap hole positive point rate and the drill penetration rate are reduced, and the slag iron discharge and the stable and smooth operation of the blast furnace are affected.
To achieve the above and other related objects, the present invention provides an operation method for reducing sticking of a tap hole, comprising the steps of:
s1: controlling the tapping machine to reach the corresponding machine position of the iron notch, and enabling the drill head of the tapping machine to be aligned with the primary drill in the center of the mud sleeve to position the iron notch pore canal;
s2: controlling the tapping machine drill bit to drill into the hearth direction, and simultaneously controlling high-pressure inert gas to purge the tap hole channel;
s3: monitoring the drilling depth and the drilling speed of the tapping machine drill bit and blowing out the amount of drilling stemming scraps from the tap hole channel, and controlling to start an atomized water switch when the tapping machine drill bit is monitored to reach a preset depth, so that the atomized water interacts with the high-pressure inert gas to form a highly atomized state, and blowing out and blowing from the front end of the drill bit;
s4: judging whether the condition of the drilling and crushing stemming chips blown out of the tap hole channel meets a preset requirement, if not, controlling to return to the tapping machine so as to blow out the drilling and crushing stemming chips in the tap hole channel, and if so, continuing to drill in;
s5: monitoring whether the drilling condition in the tap hole channel meets the requirement of stopping providing atomized water, if so, controlling to close the atomized water, and if not, controlling to continue providing the atomized water;
s6: and when the drilling speed of the tapping machine drill bit is monitored to be in an acceleration state, controlling the tapping machine to enable the tapping machine to quickly leave the iron notch with the tapping machine drill bit.
In an embodiment of the invention, the step S1 further includes: and controlling the tapping machine to only start a rotation function, and enabling the drill bit to initially drill and position the tap hole channel by utilizing the initial thrust of the tapping machine, which is pressed on the surface of the mud sleeve of the tap hole.
In an embodiment of the present invention, in the step S2, the tapping machine drill is controlled to drill into the hearth direction, and the tapping machine drill is controlled to be started to perform the rapping treatment on the tap hole channel positioned by the pilot drill.
In an embodiment of the present invention, in S2, a drilling speed of the tapping machine drill is 3.5m/min, a spraying pressure of the high-pressure inert gas is greater than or equal to 1.0Mpa, and a flow rate of the high-pressure inert gas is 10m 3 /min。
In an embodiment of the invention, the high-pressure inert gas in S2 is a nitrogen byproduct produced by an oxygen generator.
In one embodiment of the present invention, in the step S3, the spraying pressure of the atomized water is controlled to be 0.8-1.0Mpa, and the water yield is controlled to be 0-10L/min.
In an embodiment of the present invention, in the step S4, determining whether the condition of the stemming dust blown out from the tap hole channel meets a predetermined requirement includes: collecting the drilling and crushing stemming quantity discharged from the iron notch, measuring and calculating difference data delta N of the drilling and crushing stemming quantity and normal quantity, and judging whether the difference data delta N exceeds a drilling and crushing stemming quantity threshold Nmax; and simultaneously monitoring color information of the drilling and crushing stemming and judging whether the color information of the drilling and crushing stemming is red or not.
In an embodiment of the present invention, in S4, controlling to retract the tapping machine includes: and controlling the tapping machine to switch into a retreating mode, enabling the tapping machine to retreat for a preset distance and stopping for a preset time, and controlling the tapping machine drill bit to blow out the high-pressure inert gas to the tap hole channel.
In an embodiment of the invention, in S5, the method further includes: before the drilling depth of the tapping machine drill bit reaches the maximum depth Hmax corresponding to the closed atomized water, whether red drilling stemming scraps are blown out of the tap hole channel or not is monitored, if yes, the atomized water is controlled to be closed, if not, the drilling is continued until the drilling depth of the tapping machine drill bit reaches the maximum depth Hmax, and the atomized water is controlled to be closed.
In an embodiment of the invention, the step S6 further includes: and collecting a monitoring starting point signal in a preset monitoring depth delta T range before the drilling depth of the tapping machine drill reaches the maximum tapping depth Tmax of the tapping hole, so as to control the monitoring that the drilling speed of the tapping machine drill becomes an accelerating state.
In an embodiment of the invention, after S6, the method further includes: and monitoring the outflow condition of slag iron from the iron notch channel, controlling the tapping machine drill bit to leave the mud sleeve area of the iron notch, and controlling the tapping machine trolley to retreat from the iron notch and return to a standby machine position, and closing the high-pressure inert gas so as to finish the opening of the iron notch.
The invention also provides an operating system for reducing the sticking of the tap hole, which comprises the following steps:
the primary drilling positioning module controls the tapping machine to reach the corresponding machine position of the iron notch, so that a drill bit of the tapping machine is aligned to the center of the mud sleeve to perform primary drilling positioning on the iron notch pore canal;
the tapping hole cleaning control module controls the tapping machine to drill into the hearth along with the drill bit, and simultaneously controls high-pressure inert gas to purge the tapping hole channel;
the drill bit monitoring module monitors the drilling depth and the drilling speed of the drill bit, and when the drilling speed is monitored to be in an acceleration state, the tapping machine is controlled to be rapidly separated from the iron notch with the drill bit;
the atomization spraying and sweeping control module is connected to the drill bit monitoring module, and when the drilling depth of the drill bit reaches a preset depth, the atomization spraying and sweeping control module is controlled to start atomized water, so that the atomized water interacts with the high-pressure inert gas to form a highly atomized state, and the front end of the drill bit is sprayed and swept;
the drilling and crushing stemming monitoring module monitors whether the quantity of the drilling and crushing stemming blown out of the iron notch pore canal meets a preset requirement, if not, the drilling and crushing stemming is controlled to return to the tapping machine so as to blow out the drilling and crushing stemming in the iron notch pore canal, and if so, the drilling is continued; and
and the cooling control module is used for judging whether the drilling condition in the tap hole channel meets the requirement of stopping supplying atomized water, if so, controlling to close the atomized water, and if not, controlling to continuously supply the atomized water.
As described above, the operation method and the system for reducing the sticking of the tap hole have the following beneficial effects: the atomized water switch is turned on when the predetermined depth is controlled, so that the discharging time of the atomized water is reasonably set according to the depth of the tap hole, and the spraying and sweeping amount of the atomized water in the tap hole channel is reasonably controlled. The high-pressure atomization state formed by the combined action of the atomized water and the inert gas can play a good cooling role on the drill bit and the drill rod which continuously drill into the tap hole channel, and meanwhile, the blown atomized water is sprayed out by combining with the inert gas, so that the usage amount of the atomized water in unit time can be reduced, and further, the situation that the crushed stemming bits are combined to form a large slag due to the fact that the quantity of the atomized water is large in the tap hole channel is avoided. In the continuous drilling process of the tapping machine drill bit, whether the quantity of the drilling stemming bits is lower than the normal quantity or not is detected through detecting the blowing quantity of the drilling stemming bits, and when the quantity of the drilling stemming bits is detected to be lower than the normal quantity, the drill bit is controlled to timely withdraw in a tap hole channel for waiting for a certain time, so that the front end of the drill bit sweeps inert gas to blow out the drilling stemming bits accumulated in the tap hole channel and then continues to drill. The red drilling and crushing stemming scraps of the tap hole channel before drilling into the preset depth are monitored, so that atomized water can be conveniently controlled to be closed in time, and the dosage of the atomized water can be controlled in time. Through the detection that the drilling speed of the drill bit becomes an acceleration state before the tap hole channel is to be drilled, whether the tap hole channel is drilled or not can be accurately known, and then the tapping machine and the drill bit are controlled to be rapidly withdrawn from the tap hole channel. Through the drill bit drilling control and the regulation and control of atomized water, the probability of sticking of a tap hole is reduced, the time for opening the tap hole is reduced, the effective iron discharging time of the tap hole is ensured, the positive point rate and the drill-through rate of the tap hole are improved, the oxygen burning frequency of the tap hole is reduced, the labor intensity of workers is reduced, the timely discharge of slag iron is facilitated, and conditions are created for long-term stable and smooth running of a blast furnace.
Drawings
FIG. 1 is a flow chart of a method of operation of the present invention.
FIG. 2 is a schematic diagram of one embodiment of the method of operation of the present invention;
FIG. 3 is a block diagram of an operating system according to the present invention.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the invention. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.
Please refer to fig. 1 to 3. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
Referring to fig. 1, the present invention provides an operation method for reducing sticking of a tap hole, comprising the following steps:
s1: controlling the tapping machine to reach the corresponding machine position of the iron notch, and enabling the drill head of the tapping machine to be aligned with the primary drill in the center of the mud sleeve to position the iron notch pore canal;
s2: controlling a tapping machine drill bit to drill into the hearth direction, and simultaneously controlling high-pressure inert gas to sweep a tap hole channel;
s3: monitoring the drilling depth and the drilling speed of a tapping machine drill bit and blowing out the amount of drilling and crushing stemming from a tap hole channel, and controlling to start an atomized water switch when the tapping machine drill bit is monitored to reach a preset depth, so that atomized water and high-pressure inert gas interact to form a highly atomized state, and blowing out and blowing from the front end of the drill bit;
s4: judging whether the condition of the drilling and crushing stemming bits blown out from the iron port hole channel meets the preset requirement, if not, controlling the opening machine to return to blow out the drilling and crushing stemming bits in the iron port hole channel, and if so, continuing drilling;
s5: monitoring whether the drilling condition in the tap hole channel meets the requirement of stopping providing atomized water, if so, controlling to close the atomized water, and if not, controlling to continue providing the atomized water;
s6: when the drilling speed of the tapping machine drill bit is monitored to be in an acceleration state, the tapping machine is controlled to enable the tapping machine to quickly leave the iron notch with the tapping machine drill bit.
In an embodiment of the invention, in the process of opening a tap hole by using a drill bit, the drill bit of the tapping machine is aligned to the center of a tap hole mud sleeve by firstly enabling the tapping machine to reach the tap hole position, and the drill bit is drilled into the mud sleeve to a preset depth by the inertia force of the drill bit, so that a tap hole channel is positioned by primary drilling. After the tap hole channel is initially drilled and positioned, the tapping machine is driven to move by controlling the traveling motor, so that a drill bit of the tapping machine can continuously drill into the furnace hearth along the tap hole channel. And the high-pressure inert gas is blown out from the front end of the drill bit while the drill bit is continuously drilled in, so that the cleaning treatment of the drill stemming scraps in the continuously drilled tap hole channel is realized. During the drilling process of the tapping machine drill bit, the drilling depth, the drilling speed and the drilling quantity of the drilling and crushing stemming chips of the tapping machine drill bit are detected. When drilling into predetermined degree of depth, open the atomized water again, through utilizing atomized water and high pressure inert gas to mix the back blowout simultaneously, and then in order to realize cooling of the tapping machine drill bit in the iron notch pore canal, can also in time to the clearance of the garrulous stemming bits of boring, moreover through atomized water and high pressure inert gas mix the atomized water again simultaneously blowout again, can reduce the quantity of use of atomized water, and then save the quantity of water, in order to reduce atomized water and boring garrulous stemming bits of combining and form the large-scale slag, and then cause piling up or the parcel in the iron notch pore canal on drill bit, drilling rod, with the iron notch card that causes to bore. In the continuous drilling process of the tapping machine drill bit, whether the amount of the drilling and crushing stemming chips blown out of the tap hole channel through the high-pressure inert gas reaches the preset requirement is judged, so that when the amount of the drilling and crushing stemming chips does not meet the preset requirement, the fact that the drilling and crushing stemming chips exist in the tap hole channel is indicated, the tapping machine is controlled to retract the drill bit to the tap hole channel by a certain distance, the high-pressure inert gas blown out of the front end of the tapping machine drill bit is used for cleaning the tap hole channel, and therefore no drilling and crushing stemming chips are accumulated in the tap hole channel and no blocking of a drill rod is guaranteed. In the continuous drilling process of the tapping machine drill bit, whether the drilling depth of the drill bit meets the requirement of stopping supplying atomized water is detected, so that the atomized water can be closed timely when the drilling depth is met, and the using amount of the atomized water is reduced. When the drill bit of the tapping machine is about to drill through the tap hole channel, the drilling rotation speed of the drill bit of the tapping machine is monitored, and when the drill bit is monitored to be in an acceleration state, the tap hole channel is indicated to be drilled through, so that the travelling motor is controlled to carry the tapping machine and the drill bit to withdraw from the tap hole channel.
The step S1 further includes: the tapping machine is controlled to only start the rotation function, and the initial thrust of the tapping machine against the surface of the mud sleeve of the tap hole is utilized to enable the drill bit to initially drill and position the tap hole channel.
In an embodiment of the present invention, when the tapping machine drill bit is pressed against the surface of the mud sleeve, the tapping machine drill bit rotates to further press the initial thrust of the mud sleeve, so as to drill the drill bit into the surface of the mud sleeve, so as to form a tap hole channel positioned by primary drilling.
In the step S2, the tapping machine drill bit is controlled to drill into the hearth direction, and meanwhile, the tapping machine drill bit is controlled to start to perform vibrating treatment on the tap hole channel positioned by the primary drilling.
In the step S2, the drilling speed of the tapping machine drill bit is 3.5m/min, the injection pressure of the high-pressure inert gas is more than or equal to 1.0Mpa, and the flow rate of the high-pressure inert gas is 10m 3 /min。
And S2, the high-pressure inert gas is a nitrogen byproduct produced by an oxygenerator. Further, the produced oxygen is supplied to the hearth through the oxygenerator, and the nitrogen which is a byproduct of producing oxygen is further utilized. Thereby reducing the manufacturing cost of the high-pressure inert gas.
In the step S3, the spraying pressure of the opened atomized water is controlled to be 0.8-1.0Mpa, and the water yield is controlled to be 0-10L/min.
In step S4, determining whether the condition of the drilling and stemming dust blown out from the tap hole channel meets a preset requirement includes: collecting the quantity of the drilling and crushing stemming scraps discharged from the iron notch, measuring and calculating the difference value data delta N of the quantity of the drilling and crushing stemming scraps and the normal quantity, and judging whether the difference value data delta N exceeds a drilling and crushing stemming scraps quantity threshold value Nmax; and monitoring the color information of the drilling and crushing stemming scraps at the same time, and judging whether the color information of the drilling and crushing stemming scraps is red or not.
In an embodiment of the invention, when judging the condition that the iron notch channel blows out the drilling and crushing stemming, the method is used for collecting the quantity of the drilling and crushing stemming blown out from the iron notch, calculating difference data delta N between the quantity of the drilling and crushing stemming blown out from the iron notch and the normal quantity of the drilling and crushing stemming under normal conditions, judging whether the quantity of the drilling and crushing stemming blown out from the iron notch channel occurs in a stacking condition in a channel of the iron notch according to whether the difference data delta N exceeds a threshold value Nmax of the quantity of the drilling and crushing stemming, so that a tapping machine and a drill bit can be controlled to be temporarily evacuated in time, and the cleaning of the channel of the iron notch can be realized by blowing out high-pressure inert gas from the front end of the drill bit.
In step S4, controlling the back-opening machine includes: and controlling the tapping machine to switch into a retreating mode, so that the tapping machine retreats by a preset distance and stops for a preset time, and controlling a drill bit of the tapping machine to blow high-pressure inert gas to the tap hole channel.
In one embodiment of the invention, when the tapping machine retreats, the tapping machine is controlled to enter a retreating mode, so that after the walking motor drives the tapping machine and the drill bit to retreat for a specified distance, the tapping machine stops for a preset time, and the drill bit of the tapping machine is controlled to blow high-pressure inert gas to purge the tap hole channel in the preset time.
In step S5, further includes: before the drilling depth of the tapping machine drill reaches the maximum depth Hmax corresponding to the closed atomized water, whether red drilling stemming scraps are blown out of the tap hole channel or not is monitored, if yes, the closed atomized water is controlled, if not, the drilling is continued until the drilling depth of the tapping machine drill reaches the maximum depth Hmax, and the closed atomized water is controlled.
In one embodiment of the invention, when red ground stemming is blown from the drill depth to the tap hole, it is indicated that the drill depth is about to reach the maximum tap depth Tmax. At this time, the red drilled stemming chips are in a burnt red state. When the atomized water is closed at this time, part of atomized water remains sprayed from the tail part of the tapping machine to the drill bit, so as to continuously cool the drill bit and the drill rod.
Step S6 further includes: and collecting a monitoring starting point signal in a preset monitoring depth delta T range before the drilling depth of the tapping machine drill reaches the maximum tap hole depth Tmax of the drilling through tap hole, so as to control the monitoring that the drilling speed of the tapping machine drill becomes an accelerating state.
In one embodiment of the invention, the drill bit and the drill rod are blocked in the iron notch channel because the drill bit cannot be contacted with the flowing slag iron, such as untimely withdrawal, and the slag iron can be wrapped on the drill bit and the drill rod. When the drilling speed of the drill bit of the tapping machine is monitored, a detection depth range which can be drilled through, namely a preset monitoring depth delta T range, is set before the maximum tap hole depth Tmax is drilled, and when the start point of the preset monitoring depth delta T range is immediately entered, the start of the monitoring of the state that the drilling speed is changed into an acceleration state is controlled, so that the drill bit and the tapping machine are controlled to withdraw from a tap hole channel in time when the drilling speed of the drill bit is accelerated.
After step S6, the method further includes: and (3) monitoring the outflow condition of the slag iron from the tap hole channel, controlling the tapping machine drill to leave the mud sleeve area of the tap hole, and controlling the tapping machine trolley to retreat from the tap hole and return to the waiting machine position, and closing the high-pressure inert gas so as to finish the opening of the tap hole.
In one embodiment of the invention, before the tapping machine and the drill bit are controlled to withdraw from the tap hole channel, the tapping machine trolley is controlled to withdraw from the mud sleeve area by monitoring the outflow condition of the iron slag of the tap hole and controlling the drill bit to withdraw from the mud sleeve area when the iron slag flows out of the tap hole channel, the tapping machine trolley is returned to the standby position, the continuous spraying of high-pressure inert gas is closed, and the whole tapping time is kept at 3-5min.
In the embodiment shown in fig. 2, the tapping machine is rotated to the tapping machine position by operating the remote control, and the tapping machine drill is aligned with and pressed against the center of the mud sleeve. The rotary function of the tapping machine is controlled to be opened, so that the drill bit enters a small amount (namely 50mm plus or minus) of the hole channel of the tap hole under the action of pushing force during the pressing, and the position is the initial drilling positioning of the mud sleeve. After 50 mm+/-drilling, controlling the rapping function of the tapping machine to be started, controlling the running motor of the tapping machine to enter a forward mode, and drilling into the tapping machine to a depth of 100mm at a speed of 3.5 m/min. Then after drilling into 100mm, opening a continuous drilling-in tap hole channel by high-pressure nitrogen purging, controlling the pressure of the high-pressure nitrogen to be more than or equal to 1.0Mpa and controlling the nitrogen flow to be 10m 3 And/min. After the drilling depth reaches 1500mm, controlling to start atomized water, controlling the atomized water pressure to be 0.8-1.0MPa, and controlling the water yield to be 0-10L/min, wherein the atomized water pipe and the nitrogen pipe are seamless stainless steel pipes with the inner diameter phi 15 mm. The two pipelines are converged in a T shape (namely, pipelines corresponding to two ends above the T shape are respectively connected with atomized water and high-pressure nitrogen), the pipeline corresponding to one end below outputs a converged mixture of the atomized water and the high-pressure nitrogen after high atomization, the mixture is connected onto the inner diameter of a connecting sleeve of the tapping machine, and then the drill rod is in threaded connection with a drill bit through threaded connection of the drill rod and the connecting sleeve, and 2-5 small holes with the diameter phi of 5-7mm are formed in the drill bit. And then the highly atomized gas formed by the interaction of the nitrogen and the water flows into the front end of the drill bit through a channel with the inner diameter (phi 15 mm) of the drill rod, and is sprayed out of the drill bit to protect the drill bit of the tapping machine, the drill rod and blow out stemming. After the drill bit continues to drill into 2000mm, the traveling motor is controlled to enable the tapping machine to enter a primary backward mode. The tapping machine trolley is retracted for 300mm for one time, then the traveling motor is stopped for 10-30s, and the tapping machine drill bit is controlled to control the tapping machine drill holeThe internal drilling and crushing stemming scraps are timely blown out, no obvious slag is discharged from a hole channel of an iron notch, and then a traveling motor is started to continue to drill inwards. And in the continuous drilling process after 2000mm, monitoring the quantity of the drilling and crushing stemming scraps blown out of the iron notch pore canal, if the quantity is more than normal quantity, controlling a travelling motor in time to enable the tapping machine trolley and the drill bit to retract and clean the drilling and crushing stemming scraps in time so as to ensure that no drilling and crushing stemming scraps are accumulated in the iron notch pore canal and the drill rod is free from blocking. Before the drilling depth is continuously 2800mm, if red slag (namely red drilling stemming scraps) appears, the atomized water valve is immediately closed (after atomized water is closed, part of residual water is remained from the tail part of the tapping machine to the drill bit, and the drill bit and the drill rod can be cooled). When red drilling stemming is not generated before the drilling depth reaches 2800mm, the atomized water valve is controlled to be closed when the drilling stemming reaches 2800 mm. The penetration rate of the tapping machine drill immediately before the drill reaches the maximum tap hole depth Tmax is detected. If the drilling speed of the drill bit suddenly enters an acceleration state, the fact that the tap hole channel is drilled through is indicated, and stemming is not blocked in the front. Therefore, the continuous drilling should be stopped immediately, the walking motor is immediately changed into a 'backward' mode, and the tapping machine trolley is quickly withdrawn from the tap hole channel at the speed of 7.0m/min (the drill bit cannot be contacted with the discharged slag iron, if the tapping is not timely, the slag iron can be wrapped on the drill bit and the drill rod, so that the drill bit and the drill rod are clamped in the tap hole channel). Finally, the slag iron flows out from the tap hole channel, the drill bit leaves the tap hole mud sleeve area, the tapping machine trolley retreats to the in-place position, the tapping machine retreats to the standby position, the high-pressure nitrogen manual valve is closed, the tap hole is normally opened, and the whole tapping time is controlled within 3-5min.
As shown in fig. 3, the present invention further provides an operating system for reducing sticking of a tap hole, comprising:
the primary drilling positioning module controls the tapping machine to reach the corresponding machine position of the iron notch, so that a drill bit of the tapping machine is aligned to the center of the mud sleeve to perform primary drilling positioning on the channel of the iron notch;
the iron notch cleaning control module controls the tapping machine to drill into the hearth along with the drill bit, and simultaneously controls high-pressure inert gas to purge the iron notch pore canal;
the drill bit monitoring module monitors the drilling depth and the drilling speed of the drill bit, and when the drilling speed is monitored to be in an accelerating state, the tapping machine is controlled to drive the drill bit to rapidly leave the iron notch;
the atomizing and spraying and sweeping control module is connected to the drill bit monitoring module, and when the drilling depth of the received drill bit reaches a preset depth, atomized water is controlled to be started, so that the atomized water and high-pressure inert gas interact to form a highly atomized state, and the atomized water is sprayed from the front end of the drill bit to be swept;
the drilling and crushing stemming monitoring module monitors whether the quantity of the drilling and crushing stemming blown out of the iron port hole meets the preset requirement, if not, the drilling and crushing stemming is controlled to return to the tapping machine so as to blow out the drilling and crushing stemming in the iron port hole, and if so, the drilling is continued; and
and the cooling control module is used for judging whether the drilling condition in the tap hole channel meets the requirement of stopping supplying atomized water, if so, controlling to close the atomized water, and if not, controlling to continue supplying the atomized water.
In one embodiment of the invention, the preliminary pressure of the tapping machine drill bit when pressing the surface of the mud sleeve is utilized before the tapping machine and the drill bit are controlled by the primary drilling positioning module to drill into the tap hole channel by the running motor, and then the initially positioned tap hole channel is primarily drilled when the drill bit rotates. The iron notch cleaning control module sprays high-pressure inert gas from the front end of the drill bit when drilling in so as to clean the crushed stemming. The atomizing spraying control module is used for controlling the atomized water to be started when the drilling depth reaches the preset depth so as to realize the combined action with the high-pressure inert gas, so that the drill rod and the drill bit are cooled, the consumption of the atomized water is reduced, and the accumulation of the drilling stemming scraps is avoided. And whether the blown-out drilling stemming is normal or not is monitored by the drilling stemming monitoring module, and when the drilling stemming is not normal, the drill bit is controlled to retreat in the tap hole channel and the drilling stemming in the tap hole channel is blown out, so that the problem of drill sticking along with the increase of the drilling depth is solved. The cooling control module is used for monitoring the drilling condition of the drill bit, judging whether the drilling condition can stop providing atomized water or not, and controlling to continuously provide the atomized water when the drilling condition can stop, so that the atomized water is saved, and the problems that the drilling stemming scraps are combined into a large slag block due to excessive use of the atomized water, and further the tap hole channel is piled up or the tap hole is clamped are solved.
In summary, the invention turns on the atomized water switch when the predetermined depth is controlled, thereby realizing reasonable setting of the discharging time of the atomized water according to the depth of the tap hole, and further reasonably controlling the spraying and sweeping amount of the atomized water in the tap hole channel. The high-pressure atomization state formed by the combined action of the atomized water and the inert gas can play a good cooling role on the drill bit and the drill rod which continuously drill into the tap hole channel, and meanwhile, the blown atomized water is sprayed out by combining with the inert gas, so that the usage amount of the atomized water in unit time can be reduced, and further, the situation that the crushed stemming bits are combined to form a large slag due to the fact that the quantity of the atomized water is large in the tap hole channel is avoided. In the continuous drilling process of the tapping machine drill bit, whether the quantity of the drilling stemming bits is lower than the normal quantity or not is detected through detecting the blowing quantity of the drilling stemming bits, and when the quantity of the drilling stemming bits is detected to be lower than the normal quantity, the drill bit is controlled to timely withdraw in a tap hole channel for waiting for a certain time, so that the front end of the drill bit sweeps inert gas to blow out the drilling stemming bits accumulated in the tap hole channel and then continues to drill. The red drilling and crushing stemming scraps of the tap hole channel before drilling into the preset depth are monitored, so that atomized water can be conveniently controlled to be closed in time, and the dosage of the atomized water can be controlled in time. Through the detection that the drilling speed of the drill bit becomes an acceleration state before the tap hole channel is to be drilled, whether the tap hole channel is drilled or not can be accurately known, and then the tapping machine and the drill bit are controlled to be rapidly withdrawn from the tap hole channel. Through the drill bit drilling control and the regulation and control of atomized water, the probability of sticking of a tap hole is reduced, the time for opening the tap hole is reduced, the effective iron discharging time of the tap hole is ensured, the positive point rate and the drill-through rate of the tap hole are improved, the oxygen burning frequency of the tap hole is reduced, the labor intensity of workers is reduced, the timely discharge of slag iron is facilitated, and conditions are created for long-term stable and smooth running of a blast furnace. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (12)
1. An operating method for reducing stuck drill at a tap hole is characterized by comprising the following steps:
s1: controlling the tapping machine to reach the corresponding machine position of the iron notch, and enabling the drill head of the tapping machine to be aligned with the primary drill in the center of the mud sleeve to position the iron notch pore canal;
s2: controlling the tapping machine drill bit to drill into the hearth direction, and simultaneously controlling high-pressure inert gas to purge the tap hole channel;
s3: monitoring the drilling depth and the drilling speed of the tapping machine drill bit and blowing out the amount of drilling stemming scraps from the tap hole channel, and controlling to start an atomized water switch when the tapping machine drill bit is monitored to reach a preset depth, so that the atomized water interacts with the high-pressure inert gas to form a highly atomized state, and blowing out and blowing from the front end of the drill bit;
s4: judging whether the condition of the drilling and crushing stemming chips blown out of the tap hole channel meets a preset requirement, if not, controlling to return to the tapping machine so as to blow out the drilling and crushing stemming chips in the tap hole channel, and if so, continuing to drill in;
s5: monitoring whether the drilling condition in the tap hole channel meets the requirement of stopping providing atomized water, if so, controlling to close the atomized water, and if not, controlling to continue providing the atomized water;
s6: and when the drilling speed of the tapping machine drill bit is monitored to be in an acceleration state, controlling the tapping machine to enable the tapping machine to quickly leave the iron notch with the tapping machine drill bit.
2. The method of claim 1, wherein the method comprises: the step S1 further comprises the following steps: and controlling the tapping machine to only start a rotation function, and enabling the drill bit to initially drill and position the tap hole channel by utilizing the initial thrust of the tapping machine, which is pressed on the surface of the mud sleeve of the tap hole.
3. The method of claim 1, wherein the method comprises: in the step S2, the tapping machine drill bit is controlled to drill into the hearth direction, and meanwhile, the tapping machine drill bit is controlled to start to perform vibration treatment on the tap hole channel positioned by primary drilling.
4. The method of claim 1, wherein the method comprises: in the step S2, the drilling speed of the tapping machine drill bit is 3.5m/min, the injection pressure of the high-pressure inert gas is more than or equal to 1.0Mpa, and the flow rate of the high-pressure inert gas is 10m 3 /min。
5. The method of operation for reducing sticking to a tap hole of claim 1 or 4, wherein: the high-pressure inert gas in the step S2 is a nitrogen byproduct produced by an oxygenerator.
6. The method of claim 1, wherein the method comprises: in the step S3, the spraying pressure of the opened atomized water is controlled to be 0.8-1.0Mpa, and the water yield is controlled to be 0-10L/min.
7. The method of claim 1, wherein the method comprises: in the step S4, determining whether the condition of the drilling and crushing stemming dust blown out from the tap hole channel meets a preset requirement includes: collecting the drilling and crushing stemming quantity discharged from the iron notch, measuring and calculating difference data delta N of the drilling and crushing stemming quantity and normal quantity, and judging whether the difference data delta N exceeds a drilling and crushing stemming quantity threshold Nmax; and simultaneously monitoring color information of the drilling and crushing stemming and judging whether the color information of the drilling and crushing stemming is red or not.
8. The method of claim 1, wherein the method comprises: in the step S4, controlling the tapping machine to retract includes: and controlling the tapping machine to switch into a retreating mode, enabling the tapping machine to retreat for a preset distance and stopping for a preset time, and controlling the tapping machine drill bit to blow out the high-pressure inert gas to the tap hole channel.
9. The method of claim 1, wherein the method comprises: in the step S5, further includes: before the drilling depth of the tapping machine drill bit reaches the maximum depth Hmax corresponding to the closed atomized water, whether red drilling stemming scraps are blown out of the tap hole channel or not is monitored, if yes, the atomized water is controlled to be closed, if not, the drilling is continued until the drilling depth of the tapping machine drill bit reaches the maximum depth Hmax, and the atomized water is controlled to be closed.
10. The method of claim 1, wherein the method comprises: the S6 further includes: and collecting a monitoring starting point signal in a preset monitoring depth delta T range before the drilling depth of the tapping machine drill reaches the maximum tapping depth Tmax of the tapping hole, so as to control the monitoring that the drilling speed of the tapping machine drill becomes an accelerating state.
11. The method of claim 1, wherein the method comprises: after S6, the method further includes: and monitoring the outflow condition of slag iron from the iron notch channel, controlling the tapping machine drill bit to leave the mud sleeve area of the iron notch, and controlling the tapping machine trolley to retreat from the iron notch and return to a standby machine position, and closing the high-pressure inert gas so as to finish the opening of the iron notch.
12. An operating system for reducing sticking of a tap hole, comprising:
the primary drilling positioning module controls the tapping machine to reach the corresponding machine position of the iron notch, so that a drill bit of the tapping machine is aligned to the center of the mud sleeve to perform primary drilling positioning on the iron notch pore canal;
the tapping hole cleaning control module controls the tapping machine to drill into the hearth along with the drill bit, and simultaneously controls high-pressure inert gas to purge the tapping hole channel;
the drill bit monitoring module monitors the drilling depth and the drilling speed of the drill bit, and when the drilling speed is monitored to be in an acceleration state, the tapping machine is controlled to be rapidly separated from the iron notch with the drill bit;
the atomization spraying and sweeping control module is connected to the drill bit monitoring module, and when the drilling depth of the drill bit reaches a preset depth, the atomization spraying and sweeping control module is controlled to start atomized water, so that the atomized water interacts with the high-pressure inert gas to form a highly atomized state, and the front end of the drill bit is sprayed and swept;
the drilling and crushing stemming monitoring module monitors whether the quantity of the drilling and crushing stemming blown out of the iron notch pore canal meets a preset requirement, if not, the drilling and crushing stemming is controlled to return to the tapping machine so as to blow out the drilling and crushing stemming in the iron notch pore canal, and if so, the drilling is continued; and
and the cooling control module is used for judging whether the drilling condition in the tap hole channel meets the requirement of stopping supplying atomized water, if so, controlling to close the atomized water, and if not, controlling to continuously supply the atomized water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310851021.3A CN116875755A (en) | 2023-07-11 | 2023-07-11 | Operation method and system for reducing stuck drill at iron notch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310851021.3A CN116875755A (en) | 2023-07-11 | 2023-07-11 | Operation method and system for reducing stuck drill at iron notch |
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| CN116875755A true CN116875755A (en) | 2023-10-13 |
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| CN202310851021.3A Pending CN116875755A (en) | 2023-07-11 | 2023-07-11 | Operation method and system for reducing stuck drill at iron notch |
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