CN115652020A - Steel ladle clearance detector and steel ladle clearance detection method - Google Patents
Steel ladle clearance detector and steel ladle clearance detection method Download PDFInfo
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- CN115652020A CN115652020A CN202211358449.6A CN202211358449A CN115652020A CN 115652020 A CN115652020 A CN 115652020A CN 202211358449 A CN202211358449 A CN 202211358449A CN 115652020 A CN115652020 A CN 115652020A
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- ladle
- rod
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- clearance
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 122
- 239000010959 steel Substances 0.000 title claims abstract description 122
- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000011819 refractory material Substances 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000010079 rubber tapping Methods 0.000 claims description 10
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 abstract description 12
- 238000009628 steelmaking Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 10
- 239000000956 alloy Substances 0.000 description 10
- 238000005259 measurement Methods 0.000 description 8
- 238000005275 alloying Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
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- Treatment Of Steel In Its Molten State (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The invention discloses a steel ladle clearance detector and a steel ladle clearance detection method, relating to the technical field of steel-making production, wherein the steel ladle clearance detector comprises: the device comprises a fixed rod, a float, a connecting rod and an observation plate; the connecting rod is in an inverted L shape and comprises a horizontal rod and a vertical rod, the first end of the vertical rod is connected with the float, the second end of the vertical rod is connected with the first end of the horizontal rod, the second end of the horizontal rod is connected with the fixed rod, and the size of the horizontal rod is smaller than that of the vertical rod; the horizontal rod can be placed at the top of the steel ladle body, so that the vertical rod positioned on one side of the horizontal rod is placed on the inner side of the steel ladle body, the fixed rod positioned on the other side of the horizontal rod is placed on the outer side of the steel ladle body, and the observation plate is positioned on the fixed rod; the buoy and the connecting rod are made of refractory materials; the density of the refractory used by the buoy is less than that of the molten steel; the length of the connecting rod in the ladle is the clearance height of the ladle. The method for detecting the clearance of the steel ladle can avoid the smoke from blocking the sight and accurately detect the clearance of the steel ladle.
Description
Technical Field
The invention relates to the technical field of steel-making production, in particular to a steel ladle clearance detector and a steel ladle clearance detection method.
Background
In the production process of converter steelmaking, the steel ladle is required to be capable of accommodating molten steel to the maximum extent and meeting the treatment requirement of the next procedure. If the clearance of the steel tapping ladle of the converter is too large, the treatment difficulty of the next procedure is increased, and the energy consumption of unit steel yield is increased; if the clearance is too small, the ladle is easy to have slag overflow or steel overflow accidents, or safety accidents occur in the ladle transportation process, and the life safety of enterprise staff is threatened. When some special high alloy steel is produced, if the clearance of a steel tapping ladle of a converter is too small, alloy can not be supplemented normally in the subsequent process, and the composition is not suitable. Therefore, the control of the clearance of the steel ladle is very important, which has very important significance for ensuring the production safety, reducing the production cost and meeting the production sequence.
At present, the control of the clearance height of the steel ladle during the tapping of the converter mainly adopts a measuring rod and a scale to carry out measurement, for example, some steel ladle clearance measuring tools comprise scales arranged in parallel with the measuring rod, the measuring rod is stretched into the steel ladle during the measurement, and the specific numerical value of the clearance of the steel ladle is determined through the scale reading. And if the steel ladle clearance is controlled, the steel pipe is made into a scale comprising an outer scale claw and an inner scale claw, the scale feet with different sizes have different colors, the inner scale claw extends into the steel ladle during measurement, and whether the preset clearance is achieved is determined by observing the color of the scale feet in contact with molten steel.
However, during the tapping process of the converter, a large amount of smoke is generated in the ladle under some conditions, for example, when high alloy steel is produced, a large amount of alloy is added into the ladle, the alloy reacts violently with molten steel to generate a large amount of smoke, and further, during the steel deoxidation process, a large amount of smoke is generated, so that the sight line is blocked, the reading or color of the scale cannot be clearly observed from the ladle, and the clearance of the ladle cannot be detected.
In addition, some measure ladle/ladle headroom devices, including measuring body, card body and measurement annex (reinforcing bar), will block the body card to the ladle upper bag edge during the measurement, the reinforcing bar inserts in the molten steel, and the following part of the card body is the actual headroom of ladle, and the measurement is accomplished the back and is placed the scale parallel and read the measurement rod by the size of burning red part, combines the length and the mounted position of reinforcing bar and can obtain the concrete numerical value of ladle headroom. Although the method does not involve the problem that the observation cannot be carried out due to the fact that smoke blocks the sight line, measuring accessories extending into molten steel, namely reinforcing steel bars, are always melted, and therefore the steel ladle clearance cannot be obtained by measuring the size of the red part of the reinforcing steel bars after the measurement is finished, namely the steel ladle clearance detection cannot be carried out by the device.
Disclosure of Invention
In view of the above, the invention provides a steel ladle clearance detector and a steel ladle clearance detection method, which utilize the density difference of molten steel and a float, the float floats on the surface of the molten steel and rises along with the increase of the molten steel, a connecting rod fixed with the float also moves upwards, a fixed rod connected with the connecting rod also moves, the clearance of a steel ladle is detected by observing whether an observation plate on the fixed rod outside the steel ladle moves, a scale reading stretching into the steel ladle does not need to be observed, the sight line is not blocked by smoke, and the required float and the connecting rod need to use refractory materials with the refractoriness higher than 1730 ℃, can not melt due to contact with the molten steel, and can not influence the accuracy and the feasibility of steel ladle clearance detection.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, the present invention provides a ladle clearance detector, including: the device comprises a fixed rod, a float, a connecting rod and an observation plate;
the connecting rod is in an inverted L shape and comprises a horizontal rod and a vertical rod, the first end of the vertical rod is connected with the buoy, the second end of the vertical rod is connected with the first end of the horizontal rod, the second end of the horizontal rod is connected with the fixed rod, and the size of the horizontal rod is smaller than that of the vertical rod; the horizontal rod can be placed at the top of the steel ladle body, so that the vertical rod positioned on one side of the horizontal rod is placed on the inner side of the steel ladle body, and the fixed rod positioned on the other side of the horizontal rod is placed on the outer side of the steel ladle body; the observation plate is positioned on the fixed rod.
Furthermore, the buoy and the connecting rod are made of refractory materials; the density of the refractory used by the buoy is less than that of the molten steel; the buoy and the connecting rod are made of refractory materials with the refractoriness higher than 1730 ℃.
Further, the length of the vertical rod of the connecting rod in the ladle is the height of the clearance of the ladle; the length of the vertical rod of the connecting rod is adjusted according to the required clearance of the steel grade.
Further, the observation plate is provided with a color mark.
Furthermore, an alarm device is fixed on the observation plate; the alarm device comprises a shell, a control module, a motion sensor, a power supply module and an alarm; the shell is fixed on the observation plate, and the control module, the motion sensor and the power supply module are positioned in the shell; the motion sensor is electrically connected with the controller; the alarm is positioned outside the shell and fixed on the observation plate; the alarm is electrically connected with the controller.
Further, the float and the connecting rod are integrally forged.
Further, the method is used for detecting the clearance of the steel ladle in the production of high alloy steel.
Further, the method is used for detecting the clearance of the steel ladle in the steel deoxidation process.
In another aspect, the present invention further provides a method for detecting a steel ladle clearance by using the steel ladle clearance detector, where the method includes the following steps:
placing a detector in the ladle;
when the detector is placed, the buoy and the connecting rod of the detector are positioned in a steel ladle, the fixed rod is positioned outside the steel ladle, and the observation plate on the fixed rod is positioned at the visible position of a converter steel tapping observation hole;
injecting molten steel into the steel ladle, and contacting the molten steel with the buoy when the liquid level of the molten steel reaches the height of the corresponding clearance, so that the buoy floats upwards to drive the observation plate to move; when the observation plate motion is observed, determining the current ladle clearance as the preset ladle clearance.
The invention has the advantages and positive effects that:
1. in the invention, the clearance of the steel ladle is judged by observing whether the observation plate at the visible position of the steel tapping observation hole of the converter moves or not, so that the influence of smoke is avoided, the view line shielded by the smoke can be avoided, and the clearance of the steel ladle can be accurately detected.
2. In the invention, the connecting rod is made of refractory material, so that the problems of softening, fusing and the like of common pipes due to high temperature can be avoided, and the method can be smoothly implemented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a detector for detecting clearance of a steel ladle in the embodiment of the invention;
in the figure: 1. a ladle body; 2. fixing the rod; 3. floating; 4. a connecting rod; 5. and (4) observing the plate.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, an embodiment of the present invention provides a ladle clearance detector, including: the device comprises a fixed rod 2, a buoy 3, a connecting rod 4 and an observation plate 5; the connecting rod 4 is the shape of falling L, including horizon bar and vertical pole, and the first end of vertical pole links to each other with cursory 3, and the second end of vertical pole links to each other with the first end of horizon bar, and the second end of horizon bar links to each other with dead lever 2, and the size of horizon bar is less than vertical pole, and the horizon bar can be placed in 1 top of ladle body, and the vertical pole that is located horizon bar one side is located ladle body 1 inboard, and the dead lever 2 that is located the horizon bar opposite side is located ladle body 1 outside. The observation plate 5 is positioned on the fixed rod 2, and when the ladle clearance detector is placed on a ladle, the observation plate is positioned at a visible position of a converter steel tapping observation hole.
The length of the vertical rod of the connecting rod in the steel ladle is used for measuring the clearance height of the steel ladle, and the clearance can be adjusted according to the required clearance of the steel production type. The vertical rod and the horizontal rod of the connecting rod can be integrally forged to form a structure, and can also be fixedly connected to form a split structure.
The float and the connecting rod are made of refractory materials, such as refractory materials with the fire resistance higher than 1730 ℃.
The density of the refractory material used for the floating is required to be less than that of the molten steel so as to ensure that the refractory material can float on the surface of the molten steel; in a preferred embodiment, the float may be a slag stopper.
For easy observation, a plate having a conspicuous color may be used as the observation plate. When the steel water surface and cursory contact, cursory drive connecting rod upward movement under the effect of buoyancy, the connecting rod further drives the dead lever rather than fixed connection and takes place the motion, and the observation board that sets up on the dead lever takes place the motion along with the dead lever, and at this moment, when observing this motion of observation board, the proof has reached required headroom.
In another embodiment, an alarm device is fixed on the observation plate; the alarm device comprises a shell, a control module, a motion sensor, a power supply module and an alarm; the shell is fixed on the observation plate, in the specific implementation, holes can be punched in the shell and the observation plate, and the shell and the observation plate are fixedly connected together through screws and used for placing circuit devices such as a control module, a motion sensor, a power supply module and the like to play a role in protection; the motion sensor is used for sensing the motion of the observation plate where the motion sensor is positioned and can be composed of a triaxial accelerometer and an auxiliary circuit thereof; the alarm is positioned outside the shell and fixed on the observation plate, can be a sound alarm, can alarm by sound, can also be a light alarm, can alarm by light, can also be a sound-light alarm, and can alarm by sound and light; the power module is used for supplying power to various circuit devices. The motion sensor is electrically connected with the control module, and the alarm is electrically connected with the control module; when the motion sensor senses the motion of the observation plate, the control module controls the alarm to give an alarm. In this embodiment, need not the motion of artificial observation board, only need observe the alarm on the observation board can, when the steel level and cursory contact, cursory drives connecting rod upward movement under the effect of buoyancy, the connecting rod further drives the dead lever rather than fixed connection and takes place the motion, the observation board that sets up on the dead lever takes place the motion along with the dead lever, at this moment, the motion sensor of observation inboard can the perception to this motion, and then sends the warning through control module control alarm, when observing the alarm and reporting to the police, the proof has reached required headroom.
The embodiment of the invention provides a method for detecting the clearance of a steel ladle by using the steel ladle clearance detector in the embodiment, which comprises the following steps:
placing a detector in the ladle;
when the detector is placed, the buoy and the connecting rod of the detector are positioned in the steel ladle, the fixed rod is positioned outside the steel ladle, and the observation plate on the fixed rod is positioned at the visible position of the steel tapping observation hole of the converter.
Injecting molten steel into the steel ladle, and contacting the molten steel with the buoy when the liquid level of the molten steel reaches the height of the corresponding clearance, so that the buoy floats upwards to drive the observation plate to move; when the observation plate motion is observed, determining the current ladle clearance as the preset ladle clearance.
In the embodiment, the steel ladle clearance is judged by observing whether the observation plate at the visible position of the steel tapping observation hole of the converter moves or not, the influence of smoke is avoided, the view line sheltered by the smoke can be avoided, and the steel ladle clearance is accurately detected. Meanwhile, in the embodiment, the connecting rod is made of refractory materials, so that the problems of softening, fusing and the like of common pipes due to high temperature can be avoided, and the method can be smoothly implemented.
The ladle clearance detector and the ladle clearance detection method are described below with a specific embodiment.
In this embodiment, the ladle clearance detector may be used for ladle clearance detection during high alloy steel production. Alloy steels with alloying elements contents greater than 10% are generally called high alloy steels, with individual high alloy steels having alloying elements contents even exceeding 25%. When the steel grade is produced by the converter, the alloy is baked and then added into a steel ladle, and then the converter taps steel to the steel ladle to complete alloying. In this process, the molten steel reacts violently with the alloy, and a large amount of smoke is generated due to the large content of the alloy.
In the embodiment, the high-alloy steel is smelted by 25Mn steel in a 90t converter, and the required clearance of a ladle is 2030mm.
When the steel ladle clearance detector is prepared, a proper refractory material is selected and forged into a specified shape, floating on the surface of molten steel is ensured, an observation plate is additionally arranged on a fixed rod, and the steel ladle clearance is accurately judged.
The material of the float and the connecting rod is a refractory material with the refractoriness higher than 1730 ℃; the buoy is a semi-cone, the diameter of the upper surface of the cone is 260mm, the diameter of the lower surface of the cone is 80mm, the height of the cone is 240mm, and the volume density of the cone is 3.2g/cm 3 (ii) a The length of a vertical rod of the connecting rod is 1000mm, and the diameter of the vertical rod is 40mm; the buoy and the connecting rod are integrally forged; the horizontal rod of the connecting rod is connected with the fixed rod.
When the steel ladle is empty when detecting the steel ladle produced in the 25Mn steel grade, adding alloy into the steel ladle and placing a detector; the steel is poured into a ladle and contacted with a float when the surface of the steel reaches a height of 2030mm, and the movement of the observation plate is observed, thus proving that the required clearance is achieved.
In another embodiment, a large amount of smoke is generated in the steel deoxidation process, and the ladle clearance detector can be used for ladle clearance detection in the steel deoxidation process.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A ladle clearance detector, comprising: the device comprises a fixed rod, a float, a connecting rod and an observation plate;
the connecting rod is in an inverted L shape and comprises a horizontal rod and a vertical rod, the first end of the vertical rod is connected with the buoy, the second end of the vertical rod is connected with the first end of the horizontal rod, the second end of the horizontal rod is connected with the fixed rod, and the size of the horizontal rod is smaller than that of the vertical rod; the horizontal rod can be placed at the top of the steel ladle body, so that the vertical rod positioned on one side of the horizontal rod is placed on the inner side of the steel ladle body, the fixed rod positioned on the other side of the horizontal rod is placed on the outer side of the steel ladle body, and the observation plate is positioned on the fixed rod.
2. The ladle clearance detector as claimed in claim 1, wherein the float and the connecting rod are made of refractory material; the density of the refractory used by the buoy is less than that of the molten steel; the buoy and the connecting rod are made of refractory materials with the refractoriness higher than 1730 ℃.
3. The ladle clearance detector of claim 1, wherein the length of the vertical rod of the connecting rod in the ladle is the height of the ladle clearance; the vertical rod length of the connecting rod is adjusted according to the required clearance of the steel grade.
4. The ladle clearance detector of claim 1, wherein the observation plate has a color mark thereon.
5. The ladle clearance detector as claimed in claim 1, wherein an alarm device is fixed on the observation plate; the alarm device comprises a shell, a control module, a motion sensor, a power supply module and an alarm; the shell is fixed on the observation plate, and the control module, the motion sensor and the power supply module are positioned in the shell; the motion sensor is electrically connected with the controller; the alarm is positioned outside the shell and fixed on the observation plate; the alarm is electrically connected with the controller.
6. The ladle clearance detector of claim 1, wherein the float is forged integrally with the connecting rod.
7. The ladle clearance detector as claimed in claim 1, is used for detecting the ladle clearance in the production of high alloy steel.
8. The ladle clearance detector as claimed in claim 1, is used for ladle clearance detection during steel deoxidation.
9. A method for detecting the clearance of a steel ladle by using the steel ladle clearance detector as claimed in any one of claims 1 to 8, wherein the method comprises the following steps:
placing a detector in the ladle;
when the detector is placed, the buoy and the connecting rod of the detector are positioned in the steel ladle, the fixed rod is positioned outside the steel ladle, and the observation plate on the fixed rod is positioned at the visible position of the converter steel tapping observation hole;
molten steel is injected into the steel ladle, and when the liquid level of the molten steel reaches the height corresponding to the clearance, the molten steel is contacted with the buoy, and the buoy floats upwards to drive the observation plate to move; when the observation plate motion is observed, determining the current ladle clearance as the preset ladle clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211358449.6A CN115652020B (en) | 2022-11-01 | 2022-11-01 | Ladle clearance detector and ladle clearance detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211358449.6A CN115652020B (en) | 2022-11-01 | 2022-11-01 | Ladle clearance detector and ladle clearance detection method |
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| CN115652020A true CN115652020A (en) | 2023-01-31 |
| CN115652020B CN115652020B (en) | 2024-02-13 |
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| CN104043800A (en) * | 2013-03-15 | 2014-09-17 | 宝山钢铁股份有限公司 | Tracking device for forecasting of slag discharge of continuous casting crystallizer and measuring of tonnage of tundish molten steel |
| CN205165779U (en) * | 2015-11-11 | 2016-04-20 | 北京首钢股份有限公司 | Measure ladle headroom device |
| KR20200064662A (en) * | 2018-11-29 | 2020-06-08 | 주식회사 포스코 | Ladle |
-
2022
- 2022-11-01 CN CN202211358449.6A patent/CN115652020B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020090806A (en) * | 2001-05-29 | 2002-12-05 | 주식회사 포스코 | Apparatus for Measuring Level of Melted Steel |
| CN2786566Y (en) * | 2004-12-16 | 2006-06-07 | 鞍钢附企三炼钢修造总厂 | Molten steel pot headroom ruler |
| CN201122104Y (en) * | 2007-12-17 | 2008-09-24 | 鞍钢股份有限公司 | Molten steel clearance control marking ruler of molten steel tank |
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| KR20200064662A (en) * | 2018-11-29 | 2020-06-08 | 주식회사 포스코 | Ladle |
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| Publication number | Publication date |
|---|---|
| CN115652020B (en) | 2024-02-13 |
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