KR20140016607A - Device and method for measuring weight of molten iron in torpedo ladle car - Google Patents

Device and method for measuring weight of molten iron in torpedo ladle car Download PDF

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Publication number
KR20140016607A
KR20140016607A KR1020120083411A KR20120083411A KR20140016607A KR 20140016607 A KR20140016607 A KR 20140016607A KR 1020120083411 A KR1020120083411 A KR 1020120083411A KR 20120083411 A KR20120083411 A KR 20120083411A KR 20140016607 A KR20140016607 A KR 20140016607A
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South Korea
Prior art keywords
molten iron
load
weight
trolley
repair
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KR1020120083411A
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Korean (ko)
Inventor
김지성
강기수
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현대제철 주식회사
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Priority to KR1020120083411A priority Critical patent/KR20140016607A/en
Publication of KR20140016607A publication Critical patent/KR20140016607A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Theoretical Computer Science (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

A device and a method for measuring the weight of molten steel in a torpedo ladle car according to an embodiment of the present invention includes: a memory unit capable of recording an asymmetric load, generated at the rear end portion of the molten steel torpedo ladle car, in a database, by an asymmetric structure formed between the front and rear end portions of the molten steel torpedo ladle car; a load cell installed on the lower part of a rail which transfers the molten steel torpedo ladle car; and a calculation unit which calculates the weight of the molten steel in the molten steel torpedo ladle car, using the load of the front side of the molten steel torpedo ladle car measured by the load cell, before and after receiving the molten steel and using an asymmetric load measured and recorded in the database. [Reference numerals] (120) Load cell; (130) Calculation unit; (140) Memory unit; (160) Tag reader

Description

DEVICE AND METHOD FOR MEASURING WEIGHT OF MOLTEN IRON IN TORPEDO LADLE CAR}

Embodiments of the present invention relate to a molten iron carrier bogie, and more particularly, to a molten iron carrier weighing apparatus and method.

The process of making pig iron, the first step in the process of making steel from iron ore, is called steelmaking and steelmaking, and the process of making steel from pig iron is called steelmaking. A blast furnace or an electric furnace is used to perform the said iron making process, a blast furnace is a furnace which extracts molten iron from an iron ore, and an electric furnace is a furnace which makes molten iron into molten iron using the heat which an induced current produces.

In general, a large hot water is installed at the exit of the blast furnace to separate the molten iron and slag discharged from the blast furnace, and the molten iron from which the slag is separated is collected into the raceway through the jitangdo and supplied to the steelmaking process by the molten iron carrier.

On the other hand, the related prior art is the Republic of Korea Patent Publication No. 955528 (name of invention: charter level measurement device, registration date: April 22, 2010).

One embodiment of the present invention by applying the asymmetrical load generated according to the asymmetric structure between the line / rear end of the molten iron transporting bogie to measure the molten iron weight of the molten iron transporting bogie, it is possible to accurately estimate the molten iron repair weight of the molten iron transporting bogie Provided is a molten iron weighing apparatus and method for a molten iron truck.

The problems to be solved by the present invention are not limited to the above-mentioned problem (s), and another problem (s) not mentioned can be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, a molten iron weighing apparatus may further include a memory unit configured to record an asymmetrical load generated at a rear end of the molten iron transporting bogie in a database according to an asymmetrical structure between the line and the rear end of the molten iron transporting bogie; A load cell installed under the rail for moving the molten iron truck; And a calculation unit for calculating the molten iron weight of the molten iron transporting bogie using the tip load of the molten iron transporting bogie, measured before and after the molten iron repaired by the load cell, and the asymmetrical load recorded in the database.

In the molten iron weighing apparatus of the molten iron conveying bogie according to an embodiment of the present invention, the molten iron conveying bogie stops at the correct position where the molten iron can be repaired, or the repair of the molten iron is completed so that the molten iron transporting bogie is in the correct position. The apparatus may further include a position sensing sensor configured to detect movement, and the load cell may output measured values before and after the repair of the molten iron for the tip load of the molten iron truck, in conjunction with the operation of the position sensing sensor.

The calculation unit may calculate the molten iron weight of the molten iron carrier trolley based on a value obtained by subtracting the tip load after the molten iron repair and the asymmetrical load from the tip load before the molten iron repair.

The load cell may be installed at a lower rail of a position corresponding to the front end of the molten iron carrier trolley.

The load cell may measure the load of the tip end portion of the molten iron transport trolley using the length of each of the front end portion and the rear end of the molten iron transport trolley and the weight of the molten iron transport trolley.

The asymmetrical load may include an asymmetrical structure of the molten iron carrier trolley or a load due to eccentricity / inclination that may occur during assembly.

In the method of measuring the molten iron weight of the molten iron transporting bogie according to an embodiment of the present invention, the memory unit records the asymmetrical load occurring at the rear end of the molten iron transporting bogie according to the asymmetrical structure between the line and the rear end of the molten iron transporting bogie in the database. Making; Measuring a load on the tip of the molten iron transporting trolley before and after the molten iron is repaired in a load cell installed under the rail for moving the molten iron transporting trolley; And calculating, at the calculating unit, the molten iron weight of the molten iron carrier bogie by using the measured tip loads before and after the molten iron repair and the asymmetrical load recorded in the database.

In the molten iron weight measuring method of the molten iron carrier bogie according to an embodiment of the present invention, in the position sensor, the molten iron carrier bogie stops at the correct position to repair the molten iron, or the repair of the molten iron is completed, the molten iron carrier And detecting the movement of the trolley from the home position, and the measuring step includes outputting the measured values before and after the repair of the molten iron for the tip load of the molten iron transport trolley in conjunction with the operation of the position sensor. It may include.

The details of other embodiments are included in the detailed description and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and / or features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

According to an embodiment of the present invention, by applying the asymmetrical load generated according to the asymmetrical structure between the line and the rear end of the molten iron transporting bogie, by measuring the molten iron weight of the molten iron transporting bogie, in the real time, the molten iron repair weight of the molten iron transporting bogie accurately It can be estimated.

1 is a view illustrating a molten iron weight measuring apparatus of the molten iron carrier bogie according to an embodiment of the present invention.
FIG. 2 is a view showing an embodiment of a free object diagram (FBD) for a molten iron carrier bogie in an embodiment of the present invention.
3 is a flowchart illustrating a method for measuring the molten iron weight of the molten iron carrier trolley according to an embodiment of the present invention.

The molten iron produced in the blast furnace is transferred to the steelmaking plant from two columnar vessels through a chartered truck bogie, or Torpedo Ladle Car (TLC) cycled on eight tracks. At this time, the repaired molten iron is measured through a TLC gravimetric meter in real time.

The measuring principle is a method of installing a load cell under a railroad rail and measuring the weight of the TLC when it is in position. Currently, the measuring device is installed so that only half of the TLC can be measured, and it is used only at the front end (non-driven) side of the TLC and doubled to the total weight.

However, this may cause errors due to asymmetry of the TLC repair bogie or eccentricity / tilt that may occur during assembly. Actual differences in weight between tolerances were observed when measuring the same balance between the front and rear ends.

Therefore, it is necessary to be able to measure the correct weight by using a calibration algorithm in consideration of the TLC structure and characteristics of each TLC.

To this end, in one embodiment of the present invention, the current TLC structure can be simplified to be divided into a symmetrical structure and an asymmetrical structure to implement a free body diagram (FBD). You can get it. The related equations will be described later.

In addition, in an embodiment of the present invention, a more accurate measurement value may be calculated by applying elements according to tilting, TLC center of gravity asymmetry, and the like. In addition, when the TLC is cycled to the line for repair, the weight of the TLC can be accurately estimated in real time by adding an algorithm that can automatically apply the initial value of each TLC in consideration of characteristics of each TLC due to assembly errors. have.

Therefore, according to an embodiment of the present invention, the amount of molten iron which has been roughly measured can be measured more accurately. In addition, by managing the characteristic values for each TLC on a regular basis, it is possible to reduce the error compared to the conventional measurement calculation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view illustrating a molten iron weight measuring apparatus of the molten iron carrier bogie according to an embodiment of the present invention.

Referring to FIG. 1, the molten iron weight measuring apparatus 100 according to an embodiment of the present invention may include a position sensor 110, a load cell 120, an operation unit 130, and a memory unit 140. It may include.

The position detecting sensor 110 functions to detect when the molten iron carrier trolley 101 is charged.

That is, the position sensor 110 may detect that the molten iron carrier trolley 101 stops at the correct position to repair the molten iron. In addition, the repair of the molten iron may be completed to detect that the molten iron carrier trolley 101 is moved in position.

The position sensor 110 may detect the stop and the movement of the molten iron transporting trolley 101 to allow the molten iron to be repaired on the molten iron transporting trolley 101. Furthermore, the position sensor 110 may provide an environment in which the tip load of the molten iron carrier bogie 101 may be measured before and after the molten iron is repaired through the log cell 120.

The position sensor 110 may be implemented as any existing sensor that detects a position, including a laser distance sensor for transmitting and receiving a laser and measuring a distance according to a time difference thereof.

The load cell 120 is installed below the rail 102 for moving the molten iron carrier trolley 101. At this time, the load cell 120 is preferably installed in the lower rail 102 at a position corresponding to the front end of the molten iron carrier trolley 101.

The load cell 120 measures the load (hereinafter, the tip load) acting on the tip portion of the molten iron carrier trolley 101. In this case, the load cell 120 may measure the tip load before and after repairing the molten iron in the molten iron transport trolley 101.

To this end, the load cell 120 may operate in conjunction with the operation of the position sensor 110. That is, when the position stop of the molten iron carrier trolley 101 is detected by the position sensor 110, the load cell 120 is to measure the tip load (before molten iron repair) of the molten iron carrier trolley 101. Can be.

In addition, when the position sensor 110 detects the exact position movement of the molten iron carrier trolley 101, the load cell 120 to measure the tip load (after the repair of the molten iron) of the molten iron carrier trolley 101 Can be.

The calculation unit 130 uses the tip load (before and after the repair of the molten iron) of the molten iron transporting bogie 101 and the asymmetrical load recorded in the database 145 measured by the load cell 120. The molten iron weight of (101) is computed.

That is, the calculation unit 130 may calculate the molten iron weight of the molten iron carrier bogie 101 based on a value obtained by subtracting the tip load after the molten iron repair and the asymmetrical load from the tip load before the molten iron repair.

To this end, the calculation unit 130 may calculate the weight of the molten iron carrier trolley 101 is repaired by doubling the tip load after the molten iron repair. In addition, the calculation unit 130 may calculate the weight of the molten iron carrier bogie 101 is not repaired by doubling the tip load before the molten iron repair. In addition, the calculating unit 130 subtracts the weight before the molten iron repair from the weight of the molten iron in the molten iron carrier bogie 101, and then subtracts the asymmetrical load from the resultant value to again the molten iron in the molten iron transport bogie 101. The weight can be calculated.

The memory unit 140 records the asymmetrical load in the database 145. Here, the asymmetrical load refers to a load generated at the rear end of the molten iron carrier trolley 101 according to the asymmetrical structure between the line / rear end of the molten iron carrier trolley 101.

The asymmetrical load may include an asymmetrical structure (eg, gearbox, etc.) of the molten iron carrier trolley 101 or a load due to eccentricity / inclination that may occur during assembly.

Meanwhile, the molten iron weight measuring apparatus 100 of the molten iron carrier trolley according to an embodiment of the present invention may further include an identification tag 150 and a tag reader 160.

The identification tag 150 is provided in the molten iron carrier trolley 101. For example, the identification tag 150 may be mounted on the front end side of the molten iron carrier trolley 101. The identification tag 150 may store unique identification information such as a vehicle number of the chartered truck 101.

The tag reader 160 may identify the vehicle number of the chartered truck 101 from the identification tag 150. To this end, the tag reader 160 may perform RF communication with the identification tag 150.

The tag reader 160 may search for an asymmetric load corresponding to the identified vehicle number from the database 145 in cooperation with the memory unit 140. The tag reader 160 may transmit data about the retrieved asymmetric load to the operation unit 130.

Accordingly, the calculation unit 130 may calculate the molten iron weight of the molten iron truck for each vehicle. Thus, according to an embodiment of the present invention, by measuring the molten iron weight of each molten iron carrier trolley in consideration of the characteristics of each vehicle (asymmetric structure, inclination, etc.), it is possible to accurately estimate the molten iron repair weight in real time.

FIG. 2 is a view showing an embodiment of a free object diagram (FBD) for a molten iron carrier bogie in an embodiment of the present invention.

As shown in FIG. 2, the molten iron carrier trolley 101 was divided into a symmetrical structure and an asymmetrical structure to implement a free body diagram (FBD). Through the FBD, the loads of the front end portion (part corresponding to length L2) and the rear end part (part corresponding to length L1) of the molten iron carrier trolley 101 can be obtained using an equilibrium condition. The formula for this is as follows.

A'y + B'y = Mt + Mmi + Mg

L1 * (-Mt-Mmi) + (L1 + L2) * B'y = 0

If the above formula is put together as follows, the load of each of the front end part and the rear end part of the said molten iron | metal carrier trolley | bogie 101 can be calculated | required.

B'y = (Mt + Mmi) * L1 / (L1 + L2),

A'y = (Mt + Mmi) * L1 / (L1 + L2) + Mg

In the above formula, B'y represents the front end load of the molten iron carrier trolley 101, A'y represents the rear end load of the molten iron transport trolley 101, L2 of the molten iron transport trolley 101 A tip end length is shown, and L1 represents a trailing end length of the molten iron carrier trolley 101. In addition, Mt represents the weight (unloaded weight) of the said molten iron conveyance trolley 101, and Mmi shows the weight of the molten iron 102 repaired to the said molten iron conveyance trolley 101. As shown in FIG.

3 is a flowchart illustrating a method for measuring the molten iron weight of the molten iron carrier trolley according to an embodiment of the present invention.

1 and 3, in step 310, the memory unit 140 of the molten iron weighing apparatus 100 may have the molten iron transporting bogie according to an asymmetrical structure between the line / rear end of the molten iron transporting trolley 101. The asymmetrical load occurring at the rear end of 101 is recorded in the database 145.

Next, in step 320, the position sensor 110 of the molten iron weighing apparatus 100 detects when the molten iron carrier bogie 101 is charged.

That is, the position sensor 110 may detect that the molten iron carrier trolley 101 stops at the correct position to repair the molten iron. In addition, the repair of the molten iron may be completed to detect that the molten iron carrier trolley 101 is moved in position.

Next, in step 330, the load cell 120 of the molten iron weighing apparatus 100 measures the load acting on the tip of the molten iron carrier trolley 101, that is, the tip load. In this case, the load cell 120 may measure the tip load before and after repairing the molten iron in the molten iron transport trolley 101.

To this end, the load cell 120 may operate in conjunction with the operation of the position sensor 110. That is, when the position stop of the molten iron carrier trolley 101 is detected by the position sensor 110, the load cell 120 is to measure the tip load (before molten iron repair) of the molten iron carrier trolley 101. Can be.

In addition, when the position sensor 110 detects the exact position movement of the molten iron carrier trolley 101, the load cell 120 to measure the tip load (after the repair of the molten iron) of the molten iron carrier trolley 101 Can be.

Next, in step 340, the calculation unit 130 of the molten iron weighing apparatus 100 is the tip load (before and after the repair of the molten iron), measured by the load cell 120, and The asymmetric load recorded in the database 145 is used to calculate the molten iron weight of the molten iron carrier trolley 101.

That is, the calculation unit 130 may calculate the molten iron weight of the molten iron carrier bogie 101 based on a value obtained by subtracting the tip load after the molten iron repair and the asymmetrical load from the tip load before the molten iron repair.

To this end, the calculation unit 130 may calculate the weight of the molten iron carrier trolley 101 is repaired by doubling the tip load after the molten iron repair. In addition, the calculation unit 130 may calculate the weight of the molten iron carrier bogie 101 is not repaired by doubling the tip load before the molten iron repair. In addition, the calculating unit 130 subtracts the weight before the molten iron repair from the weight of the molten iron in the molten iron carrier bogie 101, and then subtracts the asymmetrical load from the resultant value to again the molten iron in the molten iron transport bogie 101. The weight can be calculated.

Thus, in one embodiment of the present invention by applying the asymmetrical load generated according to the asymmetrical structure between the line / rear end of the molten iron carrier trolley 101 by measuring the molten iron weight of the molten iron carrier trolley 101, The molten iron repair weight of the molten iron carrier trolley 101 can be estimated accurately.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

101: charter truck
102: rail
110: position detection sensor
120: load cell
130:
140:
145: database
150: identification tag
160: tag reader

Claims (8)

A memory unit for recording in the database an asymmetrical load generated at the rear end of the molten iron transport trolley according to the asymmetrical structure between the line and the rear end of the molten iron transport trolley;
A load cell installed under the rail for moving the molten iron truck; And
An arithmetic unit for calculating the molten iron weight of the molten iron transporting bogie using the tip load of the molten iron transporting bogie measured before and after the molten iron repaired by the load cell, and the asymmetrical load recorded in the database.
The molten iron weight measuring device of the molten iron carrier trolley, comprising a.
The method of claim 1,
A position detecting sensor for detecting that the molten iron truck is stopped at the correct position where the molten iron can be repaired or the molten iron is transported from the fixed position after the repair of the molten iron is completed.
Further comprising:
The load cell
And a molten iron weight measuring device of a molten iron truck, characterized in that the measured value before and after the molten iron is repaired for the tip load of the molten iron truck to be linked with the operation of the position sensor.
The method of claim 1,
The operation unit
The molten iron weight measuring apparatus of the molten iron conveying bogie characterized by calculating the molten iron weight of the molten iron conveying bogie based on the value of the tip load after the molten iron repair and the asymmetrical load subtracted from the end portion load before the molten iron repair.
The method of claim 1,
The load cell
The molten iron weight measurement apparatus of the molten iron trucks provided in the rail lower part of the position corresponding to the front-end | tip part of the said molten iron trucks.
The method of claim 1,
The load cell
An apparatus for measuring the molten iron weight of a molten iron transport trolley, characterized in that the load of the distal end of the molten iron transport trolley is measured using the length of each of the tip and rear ends of the molten iron transport trolley and the weight of the molten iron transport trolley.
The method of claim 1,
The asymmetrical load is
An apparatus for measuring the molten iron weight of a molten iron transport trolley, comprising an asymmetric structure of the molten iron transport trolley and a load according to an eccentricity / inclination that may occur during assembly.
In the memory unit, recording in the database an asymmetrical load occurring at the rear end of the molten iron transport trolley according to the asymmetrical structure between the line and the rear end of the molten iron transport trolley;
Measuring a load on the tip of the molten iron transporting trolley before and after the molten iron is repaired in a load cell installed under the rail for moving the molten iron transporting trolley; And
Calculating a molten iron weight of the molten iron truck by using the measured tip loads before and after the molten iron repair and the asymmetrical load recorded in the database.
The molten iron weight measurement method of a molten iron carrier trolley, comprising a.
The method of claim 7, wherein
In the position detection sensor, the molten iron carrier bogie stops at the correct position to repair the molten iron, or the repair of the molten iron is completed to detect the movement of the molten iron carrier bogie in the correct position
Further comprising:
The measuring step
Outputting the measured values before and after repair of the molten iron for the load of the tip of the molten iron transport trolley in association with the operation of the position sensor;
The molten iron weight measurement method of a molten iron carrier trolley, comprising a.
KR1020120083411A 2012-07-30 2012-07-30 Device and method for measuring weight of molten iron in torpedo ladle car KR20140016607A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106225892A (en) * 2016-07-29 2016-12-14 重庆钢铁集团电子有限责任公司 Driving molten steel metering method and system
CN114076616A (en) * 2020-08-12 2022-02-22 Tmt出铁测量技术有限公司 Method for monitoring torpedo cars and torpedo car monitoring system
CN114346230A (en) * 2021-12-27 2022-04-15 南京智联达科技有限公司 Method for calculating weight of molten iron in molten iron transport vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106225892A (en) * 2016-07-29 2016-12-14 重庆钢铁集团电子有限责任公司 Driving molten steel metering method and system
CN114076616A (en) * 2020-08-12 2022-02-22 Tmt出铁测量技术有限公司 Method for monitoring torpedo cars and torpedo car monitoring system
CN114346230A (en) * 2021-12-27 2022-04-15 南京智联达科技有限公司 Method for calculating weight of molten iron in molten iron transport vehicle
CN114346230B (en) * 2021-12-27 2024-05-03 南京智联达科技有限公司 Calculation method for weight of molten iron in molten iron transport vehicle

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