CN115652020B - Ladle clearance detector and ladle clearance detection method - Google Patents
Ladle clearance detector and ladle clearance detection method Download PDFInfo
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- CN115652020B CN115652020B CN202211358449.6A CN202211358449A CN115652020B CN 115652020 B CN115652020 B CN 115652020B CN 202211358449 A CN202211358449 A CN 202211358449A CN 115652020 B CN115652020 B CN 115652020B
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- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 87
- 239000010959 steel Substances 0.000 claims abstract description 87
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000011819 refractory material Substances 0.000 claims description 9
- 238000010079 rubber tapping Methods 0.000 claims description 8
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 abstract description 12
- 238000009628 steelmaking Methods 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 description 11
- 239000000956 alloy Substances 0.000 description 11
- 238000005259 measurement Methods 0.000 description 5
- 238000005275 alloying Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002436 steel type 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
- 238000005242 forging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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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- Level Indicators Using A Float (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a ladle clearance detector and a ladle clearance detection method, which relate to the technical field of steelmaking production, wherein the ladle clearance detector comprises: the device comprises a fixed rod, a buoy, 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 ladle body, so that the vertical rod positioned at one side of the horizontal rod is placed at the inner side of the ladle body, the fixed rod positioned at the other side of the horizontal rod is placed at the outer side of the ladle body, and the observation plate is positioned on the fixed rod; the material of the buoy and the connecting rod is fireproof material; the density of the refractory used for the buoy is less than that of molten steel; the length of the connecting rod in the ladle is the height of the ladle clearance. The method for detecting the clearance of the steel ladle can prevent the smoke from shielding the sight and accurately detect the clearance of the steel ladle.
Description
Technical Field
The invention relates to the technical field of steelmaking production, in particular to a ladle clearance detector and a ladle clearance detection method.
Background
In the converter steelmaking production process, the ladle is required to contain molten steel to the maximum extent and meet the treatment requirement of the next working procedure. If the clearance of the steel ladle tapped from the converter is too large, the processing difficulty of the next working procedure is increased, and the energy consumption of unit steel yield is increased; if the clearance is too small, slag overflow or steel overflow accidents of the steel ladle are easy to happen, or safety accidents occur in the steel ladle transportation process, so that the life safety of enterprise staff is threatened. When producing some special high alloy steels, if the clearance of a steel ladle tapped from a converter is too small, alloy cannot be normally added in the subsequent working procedures, so that components are not mixed. Therefore, the control of the steel ladle clearance is very important, and the method has very important significance for ensuring production safety, reducing production cost and meeting production compliance.
At present, the control of the steel ladle clearance height during tapping of the converter mainly utilizes a measuring rod and a scale to measure, for example, some measuring steel ladle clearance tools comprise scales which are arranged in parallel with the measuring rod, the measuring rod stretches into a steel ladle during measurement, and specific numerical values of the steel ladle clearance are determined through scale readings. For another example, the device for controlling the clearance of the steel ladle is manufactured into a scale comprising an outer scale claw and an inner scale claw by using a steel pipe, the scale feet with different sizes have different colors, the inner scale claw stretches into the steel ladle during measurement, and whether the preset clearance is reached is determined by observing the color of the scale foot contacted with molten steel.
However, in the tapping process of the converter, a large amount of smoke is generated in the ladle in some cases, for example, when high alloy steel is produced, a large amount of alloy is added into the ladle, the alloy can react with molten steel severely to generate a large amount of smoke, and in the deoxidizing process of the steel, a large amount of smoke is generated, so that the sight is blocked, the reading or the color of a scale cannot be clearly observed from the ladle, and the clearance of the ladle cannot be detected.
In addition, still some measure ladle/ladle clearance device, including measuring body, card body and measurement annex (reinforcing bar), will block the body card to the ladle and go up the package edge during the measurement, in the reinforcing bar inserts the molten steel, the card body below the part be the ladle actual clearance, after measuring, place the scale parallel side measuring stick and read the size of measuring stick burnt red part, combine length and the mounted position of reinforcing bar can obtain the concrete numerical value of ladle clearance. Although the method does not involve the problem that the sight is blocked by smoke, the measuring accessory extending into the molten steel, namely the steel bar, is often melted, so that the steel ladle clearance cannot be obtained by measuring the size of the burned part of the steel bar after the measurement is finished, namely the steel ladle clearance detection cannot be performed by adopting the device.
Disclosure of Invention
In view of the above, the present invention provides a ladle clearance detector and a ladle clearance detection method, which utilize the density difference of molten steel and a float, float on the surface of the molten steel and rise with the increase of the molten steel, a connecting rod fixed with the float moves upwards, a fixing rod connected with the connecting rod moves, the ladle clearance is detected by observing whether an observation plate on the fixing rod outside the ladle moves or not, the scale reading extending into the inside of the ladle is not required to be observed, the sight is not blocked by smoke, and the required float and the connecting rod need to use refractory materials with the refractoriness higher than 1730 ℃ and do not melt due to the contact with the molten steel, so that the accuracy and the feasibility of the ladle clearance detection are not affected.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
in one aspect, the present invention provides a ladle clearance detector, the ladle clearance detector comprising: the device comprises a fixed rod, a buoy, 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 ladle body, so that the vertical rod positioned at one side of the horizontal rod is placed at the inner side of the ladle body, and the fixed rod positioned at the other side of the horizontal rod is placed at the outer side of the ladle body; the observation plate is located on the fixing rod.
Further, the material of the floats and the connecting rods is fireproof material; the density of the refractory used for the buoy is less than that of molten steel; the floats and the connecting rods 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 ladle clearance; the length of the vertical rod of the connecting rod is adjusted according to the clearance required for producing steel grades.
Further, the observation plate is provided with a color mark.
Further, 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 is forged integrally with the connecting rod.
Further, the method is used for ladle clearance detection in the production of high alloy steel.
Further, the method is used for ladle clearance detection in the steel deoxidizing process.
In still another aspect, the present invention further provides a method for detecting a ladle clearance by using the ladle clearance detector, the method comprising 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;
pouring molten steel into the ladle, contacting with the float when the liquid level of the molten steel reaches the height of the corresponding clearance, and driving the observation plate to move by the float; when the movement of the observation plate is observed, determining the current ladle clearance as the preset ladle clearance.
The invention has the advantages and positive effects that:
1. according to the invention, 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 sight is prevented from being blocked by the smoke, and the steel ladle clearance is accurately detected.
2. In the invention, the connecting rod is made of refractory materials, so that the problems of softening, fusing and the like of common pipes caused by 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 that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of a detector for detecting ladle clearance in an embodiment of the present invention;
in the figure: 1. a ladle body; 2. a fixed rod; 3. a float; 4. a connecting rod; 5. and (5) observing the plate.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise 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, in an embodiment of the present invention, there is provided a ladle clearance detector, including: the device comprises a fixed rod 2, a float 3, a connecting rod 4 and an observation plate 5; the connecting rod 4 is of an inverted L shape, and comprises a horizontal rod and a vertical rod, wherein the first end of the vertical rod is connected with the float 3, 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 2, 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 ladle body 1, the vertical rod on one side of the horizontal rod is located inside the ladle body 1, and the fixed rod 2 on the other side of the horizontal rod is located outside the ladle body 1. The observation plate 5 is positioned on the fixed rod 2, and is positioned at a visible position of the steel tapping observation hole of the converter when the steel ladle clearance detector is placed in the steel ladle.
The length of the vertical rod of the connecting rod in the steel ladle is the height for measuring the clearance of the steel ladle, and the steel ladle can be adjusted according to the clearance required by producing steel grades. The vertical rod and the horizontal rod of the connecting rod can be of an integrally forged structure, or can be of a split structure which is fixedly connected together.
The material of the floats and the connecting rods is refractory material, such as refractory material with the refractoriness higher than 1730 ℃.
The density of the refractory used for the buoy is required to be smaller than that of molten steel so as to ensure that the refractory can float on the surface of the molten steel; in a preferred implementation, the float may employ a slag stopper.
For ease of viewing, the viewing panel may be a panel having a striking color. When the steel water surface is in contact with the buoy, the buoy drives the connecting rod to move upwards under the action of the buoyancy, the connecting rod further drives the fixing rod fixedly connected with the connecting rod to move, the observation plate arranged on the fixing rod moves along with the fixing rod, and at the moment, when the movement of the observation plate is observed, the requirement clearance is proved to be reached.
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 board, in the concrete implementation, holes can be formed in the shell and the observation board, and the shell and the observation board are fixedly connected together through screws and used for placing circuit devices such as a control module, a motion sensor and a power module, so that the protection effect is achieved; the motion sensor is used for sensing the motion of an 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 an audible alarm, can be an optical alarm through audible alarm, can be an audible alarm through luminous alarm, can be an audible and visual alarm, and can be an audible and luminous alarm at the same time; the power supply 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; and after 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 artificial observation board's motion, only need observe on the observation board alarm can, when the surface of steel and cursory contact, cursory drive the connecting rod upward movement under the effect of buoyancy, the connecting rod further drives the dead lever with its 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 inside motion sensor of observation board can perceive this motion, and then send the warning through control module control alarm, when observing the alarm and reporting to the police, prove that the required headroom has been reached.
The embodiment of the invention provides a method for detecting ladle clearance by using the 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 fixing rod is positioned outside the steel ladle, and the observation plate on the fixing rod is positioned at the visible position of the steel tapping observation hole of the converter.
Pouring molten steel into the ladle, contacting with the float when the liquid level of the molten steel reaches the height of the corresponding clearance, and driving the observation plate to move by the float; when the movement of the observation plate is observed, determining the current ladle clearance as the preset ladle clearance.
In the embodiment, whether the observing plate at the visible position of the steel tapping observing hole of the converter moves or not is observed to judge the ladle clearance, so that the influence of smoke is avoided, the sight is prevented from being blocked by the smoke, and the 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 caused by high temperature can be avoided, and the method can be smoothly implemented.
The ladle clearance detector and the ladle clearance detection method described above are described below in one embodiment.
In the embodiment, the ladle clearance detector can be used for ladle clearance detection in high alloy steel production. Alloy steels with an alloying element content of more than 10% are often referred to as high alloy steels, with individual high alloy steels having an alloying element content of even more than 25%. When the converter produces the steel types, the alloy is added into a ladle after baking, and then the converter is tapped into the ladle to finish alloying. In this process, the molten steel reacts vigorously with the alloy, and a large amount of smoke is generated due to the large alloy content.
In the embodiment, the high alloy steel is smelted by adopting a 90t converter with 25Mn steel grade, and the required ladle clearance is 2030mm.
When the steel ladle clearance detector is prepared, proper refractory materials are selected to forge the steel ladle clearance detector into a specified form, the steel ladle clearance detector is ensured to float on the surface of molten steel, and an observation plate is additionally arranged on a fixed rod, so that the steel ladle clearance is accurately judged.
The materials of the floats and the connecting rods are refractory materials with the refractoriness higher than 1730 ℃; the buoy is a half 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 The method comprises the steps of carrying out a first treatment on the surface of the The length of the vertical rod of the connecting rod is 1000mm, and the diameter is 40mm; forging the buoy and the connecting rod integrally; the horizontal rod of the connecting rod is connected with the fixed rod.
When detecting the clearance of the steel ladle in the production of 25Mn steel types, adding alloy into the steel ladle and placing a detector; molten steel is poured into the ladle, and when the molten steel surface reaches the height of 2030mm, the molten steel surface contacts with the buoy, and at the moment, the movement of the observation plate can be observed, so that the required clearance is proved to be reached.
In another embodiment, a large amount of smoke is generated in the steel deoxidizing process, and the steel ladle clearance detector can be used for steel ladle clearance detection in the steel deoxidizing process.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. A ladle clearance detector, characterized in that the ladle clearance detector comprises: the device comprises a fixed rod, a buoy, 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 ladle body, the vertical rod positioned at one side of the horizontal rod is placed at the inner side of the ladle body, the fixed rod positioned at the other side of the horizontal rod is placed at the outer side of the ladle body, and the observation plate is positioned on the fixed rod; the material of the cursors and the connecting rods is fireproof material; the density of the refractory used for the buoy is less than that of molten steel; the floats and the connecting rods are made of refractory materials with the refractoriness higher than 1730 ℃; 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 control module; the alarm is positioned outside the shell and fixed on the observation plate; the alarm is electrically connected with the control module.
2. The ladle clearance detector of claim 1, wherein a length of a vertical rod of the connecting rod in the ladle is a height of the ladle clearance; the length of the vertical rod of the connecting rod is adjusted according to the clearance required for producing steel grades.
3. The ladle clearance detector of claim 1, wherein the viewing panel has a color marking thereon.
4. The ladle clearance detector of claim 1, wherein the float is forged integrally with the connecting rod.
5. The ladle clearance detector of claim 1, for ladle clearance detection in high alloy steel production.
6. The ladle clearance detector of claim 1, wherein the ladle clearance detector is used in a steel deoxidizing process.
7. A method of ladle clearance detection using the ladle clearance detector of any one of claims 1 to 6, the method comprising the steps of:
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;
pouring molten steel into the ladle, contacting with the float when the liquid level of the molten steel reaches the height of the corresponding clearance, and driving the observation plate to move by the float; when the movement of the observation plate 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 CN115652020A (en) | 2023-01-31 |
| CN115652020B true CN115652020B (en) | 2024-02-13 |
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| CN202211358449.6A Active CN115652020B (en) | 2022-11-01 | 2022-11-01 | Ladle clearance detector and ladle clearance detection method |
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| KR20200064662A (en) * | 2018-11-29 | 2020-06-08 | 주식회사 포스코 | Ladle |
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2022
- 2022-11-01 CN CN202211358449.6A patent/CN115652020B/en active Active
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| 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 |
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| CN201122104Y (en) * | 2007-12-17 | 2008-09-24 | 鞍钢股份有限公司 | Molten steel emptying control identification ruler of molten steel tank |
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| Publication number | Publication date |
|---|---|
| CN115652020A (en) | 2023-01-31 |
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