KR20100118010A - Apparatus for deciding operation starting point of vacuum degasing oxygen blowing - Google Patents

Apparatus for deciding operation starting point of vacuum degasing oxygen blowing Download PDF

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Publication number
KR20100118010A
KR20100118010A KR1020090036779A KR20090036779A KR20100118010A KR 20100118010 A KR20100118010 A KR 20100118010A KR 1020090036779 A KR1020090036779 A KR 1020090036779A KR 20090036779 A KR20090036779 A KR 20090036779A KR 20100118010 A KR20100118010 A KR 20100118010A
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KR
South Korea
Prior art keywords
degassing apparatus
vacuum degassing
command
vacuum
laser sensor
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Application number
KR1020090036779A
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Korean (ko)
Inventor
박재일
Original Assignee
현대제철 주식회사
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Priority to KR1020090036779A priority Critical patent/KR20100118010A/en
Publication of KR20100118010A publication Critical patent/KR20100118010A/en

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/04—Refining by applying a vacuum

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE: An apparatus and a method for determining the operation start of a vacuum degasser are provided to accurately determine the start of operation according to the actual operating state and calculate the accurate cost. CONSTITUTION: An apparatus for determining the operation start of a vacuum degasser comprises a laser sensor(30) and a start determining unit(24). The laser sensor is installed in a PLC board on a carriage and senses the opening state of a vacuum chamber lid of a vacuum degasser(10). The start determining unit receives the opening state of the vacuum chamber lid from the laser sensor, a transfer command for the carriage, and a control command for a gas valve, and determines the operation start of the vacuum degasser.

Description

Apparatus for determining operation of vacuum degassing apparatus and its method {APPARATUS FOR DECIDING OPERATION STARTING POINT OF VACUUM DEGASING OXYGEN BLOWING}

The present invention relates to a device for determining the operation start of a vacuum degassing apparatus and a method thereof, and more particularly, to accurately determine whether a refining process is performed by a vacuum degassing apparatus and to accurately control the relationship between costing and other processes. The present invention relates to a device for determining the start of a vacuum degassing apparatus and a method thereof.

In the steelmaking process, the refining process is to adjust the components of the molten iron produced in the blast furnace, etc. according to the characteristics of the desired steel, and the primary refining is carried out by putting the molten iron and the like into the converter or electric furnace.

The molten steel cast through the primary refining has a relatively high content of alloying elements such as carbon and gas, and thus cannot be used as it is in the reprocessing process.

The vacuum degassing device among the external refining devices is an external refining device for the purpose of promoting the degassing of molten steel and sediment of molten steel received in the ladle, equalizing the temperature of steel components and molten steel, and raising the temperature. Injection is carried out by refluxing the molten steel and blowing oxygen through the lance.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

All progress of the refining process by vacuum degassing device is transferred to the control system, and the control system monitors a series of work progresses and not only gives work orders, but also calculates costs by judging start and end of work and compares them with other processes. The relationship is controlled.

However, even when commissioning a vacuum degassing device or entering a trolley for maintenance, it is judged that the refining process starts, and thus an error occurs in cost calculation and a problem in controlling the relationship with other processes.

The present invention was created to improve the above problems, and start the operation of the vacuum degassing apparatus to accurately determine the progress of the refining process by the vacuum degassing apparatus to adjust the relationship with the cost calculation and other processes. It is an object of the present invention to provide a judgment device and a method thereof.

Determination of the operation start of the vacuum degassing apparatus according to an aspect of the present invention comprises a laser sensor for detecting the opening and closing state of the lid of the vacuum chamber of the vacuum degassing apparatus; And a start determination unit for determining the operation start of the vacuum degassing apparatus by receiving the movement command of the bogie and the control command of the gas valve and the opening / closing state of the lid of the vacuum chamber from the laser sensor.

In the present invention, the laser sensor is characterized in that it is installed on the PLC board of the upper portion of the truck.

In the present invention, the start determination unit is characterized in that it is determined as the start of work when the entry command of the movement command of the bogie, the opening command of the control command of the gas valve, and the closed state of the opening and closing state of the vacuum chamber lid are all input.

In accordance with another aspect of the present invention, a method for determining a work start of a vacuum degassing apparatus receives a moving command of a bogie issued to a vacuum degassing apparatus, a control command of a gas valve, and an open / closed state of a vacuum chamber lid from a laser sensor. Characterized in determining the start of work.

In the present invention, the laser sensor is characterized in that the transmitter and the receiver are installed in the diagonal direction, respectively, on the upper portion of the trolley so that the laser is intermittent as the vacuum chamber lid is opened and closed.

In the present invention, the operation start determination condition is characterized in that the entry command of the movement command of the bogie, the open command of the control command of the gas valve and the closed state of the opening and closing state of the lid of the vacuum chamber are input.

As described above, the present invention enables to accurately control the relationship between costing and other processes by accurately determining whether to start work during the refining process by the vacuum degassing apparatus according to the actual working state.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the operation start determination device and method of the vacuum degassing apparatus according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a block diagram showing the operation start determination device of the vacuum degassing apparatus according to an embodiment of the present invention, Figure 2 is a laser sensor in the operation start determination device of the vacuum degassing apparatus according to an embodiment of the present invention. Is a view showing the mounting position of the.

As shown in FIG. 1, the apparatus for determining a work start of a vacuum degassing apparatus according to an exemplary embodiment of the present invention includes a laser sensor 30 and a start determination unit 24.

The laser sensor 30 is installed on the trolley 14 of the vacuum degassing apparatus 10 as shown in FIG. 2 to sense the opening and closing of the vacuum chamber lid 12.

At this time, the laser sensor 30 is provided with the receiver 31 on the PLC board 16 so that the laser is intermittent according to the opening and closing state of the vacuum chamber lid 12, and the transmitter 32 is installed in a diagonal direction to substantially cover the vacuum chamber lid. (12) detects the opening and closing state.

PLC board 16 is located on the upper portion of the trolley 14 to transmit the temperature change of the molten steel, gas consumption, power consumption, etc. to monitor the refining process in the vacuum degassing apparatus 10 in the control system 20 And a connection terminal (not shown) for receiving a work instruction from the control system 20.

The start determination unit 24 may be included in the control system 20 and the gas valve and the movement command of the bogie 14 lowered from the main control unit 22 of the control system 20 to the vacuum degassing apparatus 10. The start of the operation of the vacuum degassing apparatus 10 is determined by receiving the control command Valve (not shown) and the opening / closing state of the vacuum chamber lid 12 output from the laser sensor 30.

Movement of the bogie 14 output from the main control unit 22 of the control system 20 to the vacuum degassing apparatus 10 to determine the start of the work during the refining process proceeded through the vacuum degassing apparatus 10 as described above. Along with the command (Move) and the control command (Valve) of the gas valve, the open and closed state of the vacuum chamber lid 12 is substantially sensed to determine the exact start time of work.

At this time, when the entry command of the moving command (Move) of the trolley 14, the opening command of the control command (Valve) of the gas valve, and the closed state of the open / closed state of the vacuum chamber lid 12 are all entered, the operation starts. To judge.

The determined work start time point is transmitted to the main control unit 22 so that the control system 20 can adjust the relationship with the cost calculation or other processes.

Figure 3 is a flow chart for explaining the operation start determination method of the vacuum degassing apparatus according to another embodiment of the present invention.

As shown in FIG. 3, a movement command of the trolley 14 lowered from the main control unit 22 of the control system 20 to the vacuum degassing apparatus 10 to determine the start time of the operation of the vacuum degassing apparatus 10. (Move) and the control command (Valve) of the gas valve and the opening and closing state of the vacuum chamber lid 12 is input from the laser sensor 30 (S10).

At this time, the laser sensor 30 is installed in the diagonal direction of the transmitting unit 32 and the receiving unit 31 in the upper portion of the trolley 14 of the vacuum degassing apparatus 10 so that the laser is intermittent as the vacuum chamber lid 12 is opened and closed. And detects the open / closed state of the vacuum chamber lid 12 and outputs it.

Then, the movement command of the trolley 14 output from the main controller 22 is an entry command of the trolley 14, or the control command Valve of the gas valve is an opening command of the gas valve, and the laser sensor 30 It is determined whether all the conditions are satisfied by comparing the opening / closing state of the vacuum chamber lid 12 input from the closed state (S20).

At this time, if all the conditions are satisfied, it is determined that the refining process by the vacuum degassing apparatus 10 has started (S30).

The determined work start time point is transmitted to the main control unit 22 so that the control system 20 can adjust the relationship with the cost calculation or other processes.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand. Therefore, the technical protection scope of the present invention will be defined by the claims below.

1 is a block diagram showing an operation start determination device of the vacuum degassing apparatus according to an embodiment of the present invention.

2 is a view showing the mounting position of the laser sensor in the operation start determination device of the vacuum degassing apparatus according to an embodiment of the present invention.

Figure 3 is a flow chart for explaining the operation start determination method of the vacuum degassing apparatus according to another embodiment of the present invention.

   -Explanation of symbols for the main parts of the drawings-

10: vacuum degassing apparatus 14: truck

16: PLC board 20: control system

22: subject control section 24: start judgment

30: laser sensor 31: receiver

32: transmitter

Claims (6)

A laser sensor for detecting an open / closed state of a vacuum chamber lid of the vacuum degassing apparatus; And And a start determination unit for determining the operation start of the vacuum degassing apparatus by receiving the movement command of the bogie and the control valve of the gas valve and the opening / closing state of the lid of the vacuum chamber from the laser sensor. Determination of the operation start of the vacuum degassing apparatus characterized in that. The apparatus of claim 1, wherein the laser sensor is installed on a PLC board on the upper portion of the trolley. The method of claim 1, wherein the start determination unit determines that the operation is started when all of the entry command of the movement command of the vehicle, the opening command of the control command of the gas valve, and the closed state of the opening / closing state of the lid of the vacuum chamber are all input. Start operation judgment device of the vacuum degassing apparatus. The operation of the vacuum degassing apparatus is characterized by determining the start of the operation of the vacuum degassing apparatus by receiving the movement command of the bogie to the vacuum degassing apparatus, the control command of the gas valve and the opening / closing state of the lid of the vacuum chamber from the laser sensor. How to start work. 5. The method of claim 4, wherein the laser sensor is installed at a top of the cart in a diagonal direction so that the laser is intermittent as the vacuum chamber lid is opened and closed. The method of claim 4, wherein the determination condition of the start of the operation is a case in which all of an entry command among the movement commands of the trolley, an open command among the control commands of the gas valve, and a closed state of the opening and closing states of the lid of the vacuum chamber are input. Method for determining the starting operation of a vacuum degassing apparatus, characterized in that.
KR1020090036779A 2009-04-27 2009-04-27 Apparatus for deciding operation starting point of vacuum degasing oxygen blowing KR20100118010A (en)

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KR1020090036779A KR20100118010A (en) 2009-04-27 2009-04-27 Apparatus for deciding operation starting point of vacuum degasing oxygen blowing

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110260019A (en) * 2019-04-03 2019-09-20 宁波钢铁有限公司 The control method of outer net steam control valve is sent when a kind of steel-making RH production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110260019A (en) * 2019-04-03 2019-09-20 宁波钢铁有限公司 The control method of outer net steam control valve is sent when a kind of steel-making RH production

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