Classifications

• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B19/00—Programme-control systems
  • G05B19/02—Programme-control systems electric
  • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
  • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
  • G05B19/052—Linking several PLC's
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
  • F27D11/00—Arrangement of elements for electric heating in or on furnaces
  • F27D11/08—Heating by electric discharge, e.g. arc discharge
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B7/00—Heating by electric discharge
  • H05B7/02—Details
  • H05B7/144—Power supplies specially adapted for heating by electric discharge; Automatic control of power, e.g. by positioning of electrodes
  • H05B7/148—Automatic control of power
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
  • F27D19/00—Arrangements of controlling devices
  • F27D2019/0028—Regulation
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
  • F27D19/00—Arrangements of controlling devices
  • F27D2019/0028—Regulation
  • F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
  • F27D2019/0037—Quantity of electric current
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B2219/00—Program-control systems
  • G05B2219/20—Pc systems
  • G05B2219/26—Pc applications
  • G05B2219/2643—Oven, cooking
• • 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
  • Y02P10/25—Process efficiency

Definitions

• the invention relates to a device for controlling an electric arc furnace, comprising an automatic Steuerge ⁇ advises.
• Arc furnaces are often timeslich- in the steel industry, for example, scrap or sponge iron to Schmel ⁇ zen, although other metals can be melted in an electric arc furnace.
• An electric arc furnace is based on the conversion of electrical energy into thermal energy, whereby the principle of the arc is used. This will generate power of up to 200 MW and more.
• An electric arc furnace can be designed as a direct current furnace (usually with one electrode) or as a three-phase furnace (usually with three electrodes).
• a steel processing plant may also include a plurality of such electric arc furnaces.
• a ladle furnace downstream which is also designed as an electric arc furnace.
• the pan is the transport container into which the liquid metal from the arc melting furnace is filled.
• quality-enhancing additives are, for example, added, or it is led further treatment by ⁇ .
• the automation of an electric arc furnace requires the consideration of many functions. Examples of these heater control for controlling the basic functions of the O fens, the electrode regulation, on the final length and power of the arc is established, and the A ⁇ melting control may be mentioned. For each of these functions an automation device is provided in each case. This automation ⁇ s réellestechnik have in realizing arc Each time, the furnace system is extensively tested and adapted to each other in terms of interfaces and faultless interaction. The hardware cost involved is re ⁇ tively high and there is a higher installation and commissioning effort, as several automation devices must be installed with ei ⁇ -related control cabinets.
• the invention is therefore based on the object to provide a Vorrich ⁇ device for controlling an electric arc furnace, which is improved in contrast.
• a functional unit for furnace control, a functional unit for electrode control and a functional unit for a ⁇ melt control are integrated into the control unit.
• the electrode control is designed to control the shape and position of the arc. This includes, for example ⁇ , the control of the at least one hydraulically comparable drivable electrode as well as the adjustment of the distance to the molten material.
• the kiln control controls the general functions of the arc furnace. These include, for example, a hydraulically movable furnace cover, the tilting of the furnace, for example, when tearing emerging slag or when filling the molten metal and the cooling of the furnace. Also included herein are trade fairs control operations via a control panel, from which an operator can influence the furnace operation.
• the melt control is ultimately a sequencer. Here, for example, is driven, how much energy is required at what time to melt the currently to Schmel ⁇ mentary amount of material. It is also determined when, for example, an additive should be added.
• At least one further functional unit can be integrated into the control unit.
• Such further functional units may be, for example, a functional unit for energy optimization and / or a functional unit for foam slag detection and foaming slag ⁇ regulation and / or a functional unit for Rothoptimie ⁇ tion and / or a functional unit for controlling the energy supply ⁇ with respect to provisions of an energy supplier and / or a Function unit to be for a customer individu ⁇ ellen control.
• all these components are integrated into a single automatic control unit, so that only this one control unit is needed. All other ⁇ their control devices then omitted.
• a functional unit for energy optimization can insbesonde ⁇ re control the energy optimization over a neural network.
• Such an artificial intelligence can be used to optimize the energy used in terms of consumption, quality and other production parameters.
• the foamed slag refers to a slag layer that floats on the molten metal and is deliberately built up so that the heat does not reach the furnace wall but is absorbed in the foam. For example, carbon can be added to build up further foam slag. Gleichzei ⁇ tig the height of the foamed slag is determined for example the Kör ⁇ perschaltdetektoren the furnace vessel. These components The functional unit responds to foam slag detection and foam slag control.
• the functional unit for process optimization can, for example, include a model computer, which also enables an optimization of the process in a superordinate sense.
• Control of the energy supply in terms of determining an energy supplier may be necessary if the example ⁇ as maximum quantities are provided at certain times.
• the corresponding functional unit is used to control, for example, where energy can be saved, which aggre ⁇ gate can be switched off at the moment and the like.
• a functional unit for individual control for a customer can be integrated into the control unit.
• Egg ne Such a functional unit includes a customer individu ⁇ ell provided parameters that the entire system individualized ⁇ Sieren.
• the other functional units are constructed so that they are easily adaptable to the needs of a customer, so that the individualization of the other integrated functional units can already take place.
• the device may comprise a mounting unit in which the functional units, in particular in slots, are arranged.
• a mounting unit in which the functional units, in particular in slots, are arranged.
• Such an assembly unit can be, for example, a control cabinet in which the control unit, which usually includes a computing device , is accommodated.
• the modular designed functional units can be designed exchangeable or removable.
• This is a modular structure be ⁇ written , which is arbitrarily customizable. It can therefore be individual functional units are added or removed in order to adapt the functional scope of the device according to individual wishes. An exchange of defective functional units is also easy. In addition, it is easily possible to replace obsolete functional units, for example, with newly developed functional units, so that the device for controlling the electric arc furnace system is always up to date.
• control unit is designed for the automatic detection and configuration of a functional unit.
• a newly inserted functional unit thus communicates with the control unit, whereby an automatic configuration takes place.
• the functional unit also suitable power ranges supplied ⁇ assigns, for example, processors, memory, and the like.
• slots are provided for functional units, wherein each slot is assigned a fixed power range of a computing device contained in the control unit.
• no special configuration is more necessary since each slot and thus an inserted therein functional unit already assigned anyway Leis ⁇ processing areas, for example, represents processor power, memory, program agents and the like.
• Leis ⁇ processing areas for example, represents processor power, memory, program agents and the like.
• the functional units may be individually configurable. Then a perfect adaptation to customer requirements is possible.
• the functional units can be connected to a bus system.
• bus system is all types known bus systems, which provide the necessary performance criteria.
• At least two functional units are integrated into a functional ⁇ unit.
• a single functional unit can be provided for electrode regulation and energy optimization. This is always mög ⁇ exist if the performance criteria of a functional unit allow the inclusion of several such functionalities.
• slots can be saved and it will reach an even com ⁇ pakterer construction.
• the single FIGURE shows an inventive Vorrich ⁇ device 1 for controlling an electric arc furnace.
• the automatic control device 3 comprises a computing device 4, which may contain one or more processors and one or more memory devices. Furthermore, one is
• Plurality of slots 5 are provided, some of which are occupied by module-like functional units 6-13.
• the functional units 6 - 13 are removable, in particular designed interchangeable. About the slots 5, they are connected to a bus system 14, which couples them to the computing device 4.
• the functional units 6 - 13 are individually configurable, so that they can be adapted to special customer requirements.
• each slot 5 is assigned a specific power range in this embodiment, so that no further configuration after insertion of a functional unit is required.
• the control unit 3 can be designed for automatic recognition and configuration of the functional units.
• a functional unit 6 for temperature control, a function unit 7 for electrode control, a function ⁇ onsaku 8 for Einschmelz Kunststoffung, a function unit 9 for energy optimization, a functional unit 10 to the foaming slag detection and foamed slag control, a functional unit 11 for process optimization, a functional unit 12 for controlling the energy supply are With regard to determination of a power supplier and a functional unit 13 for customer-specific control provided.
• the necessary function units 6 - 8 to the furnace control electrode control and Einschmelz interviewed are the arrival whose functional units 9-13 optional, that is, they need not be present for a functional device for controlling an arc furnace installation, or may gegebe ⁇ appropriate in the form of a further automatic Control device present.
• twothesesseinhei ⁇ th are integrated into a functional unit.
• the functional unit 7 for electrode control and the functional unit 9 for energy optimization into a single functional unit.
• the function ⁇ reduction units 7 and 9 could then be removed and replaced by the new entity. As a result, fewer functional units are required.
• a ladle furnace in addition to the actual electric arc furnace for melting and, for example, a ladle furnace may be provided as another electric arc furnace.
• Such a further electric arc furnace can be controlled with the same device 1, wherein a correspondingly modified parameterization is to be used.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Automation & Control Theory (AREA)
• Power Engineering (AREA)
• Plasma & Fusion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Vertical, Hearth, Or Arc Furnaces (AREA)
• Furnace Details (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38806275

Family Applications (1)

Country Status (6)

Families Citing this family (5)

Citations (4)

Family Cites Families (27)

• 2006
  • 2006-09-22 DE DE102006044837A patent/DE102006044837A1/de not_active Ceased
• 2007
  • 2007-08-29 US US12/441,970 patent/US8254427B2/en not_active Expired - Fee Related
  • 2007-08-29 EP EP07803024A patent/EP2064602A2/de not_active Withdrawn
  • 2007-08-29 CN CNA2007800349665A patent/CN101517502A/zh active Pending
  • 2007-08-29 RU RU2009115199/07A patent/RU2475800C2/ru not_active IP Right Cessation
  • 2007-08-29 WO PCT/EP2007/059009 patent/WO2008034701A2/de active Application Filing

Patent Citations (4)

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