JP4953554B2 - Apparatus for adjusting the opening width of a segment for continuous casting equipment and method of use thereof - Google Patents

Abstract

The invention relates to a method for adjusting the feed opening of segments for continuous casting systems, especially position-controlled segments for slab and thin-slab continuous casting systems which comprise a strand guide (1) with segments (2) for a predetermined guidance of a cast strand using measuring and control signals. In order to provide an independent intelligent segment, the measuring and control signals are processed in at least one system unit (14') directly on the respective segment (2) and the set values are fed to the segment (2') by a superordinate control system (10) via a field bus (11), for example a profibus and a power supply (12'). Actual values are returned to the control system (10') via the field bus (11) as the result of control or as a process status. The system units (14) present on the segment (21) are supplied with segment-specific data such as rigidity coefficients, roller diameter, control parameters, feed opening basic settings and adjustment quota. The invention also relates to a device for carrying out the method.

Description

The invention relates to a device for adjusting the opening width of a segment formed by at least one position sensor (7) for a continuous casting installation, using a measuring signal and a control signal, A strand guide (1) having an adjustment system and a segment (2) for providing a predetermined guidance of each, wherein each segment (2) is at least one separate and independent adjustment system unit (14) This adjustment system unit relates to a device connected to a management system (10) provided at a higher level. The invention further relates to the use of this device.

Within a continuous casting facility, the prior art requires a segment (segment cylinder) that is positioned and pressure controlled. At that time, the opening width of the segment is activated via a hydraulic cylinder, a measuring / adjusting unit and a control unit to which the segment can belong, particularly for the purpose of the soft reduction (SR) method and the liquid core reduction (LCR) method. The

  In general, the adjustment and control elements required for this purpose are in a switching device spaced a distance from the continuous casting facility.

  If the transmission unit or transmission line fails, the adjustment mechanism and / or control mechanism is paralyzed.

Patent Document 1 discloses a method and apparatus for independent and independent casting data processing of measurement data obtained via a sensor in a continuous casting mold in a process computer of a continuous casting facility. The problem underlying this known technological development is the electrical method, in particular the processing of casting data measured via sensors in an efficient way, thereby further simplifying the equipment provided in this regard. It is. Therefore, measurement data and control data in the cooled fieldbus module are collected directly on the continuous casting mold, sent to the bus line by a bus signal, and stored and / or processed at least in the control unit of the continuous casting equipment. This greatly shortens and simplifies the data path and further simplifies the device.

  Another advantage of this technique is that, in a fieldbus module on a continuous casting mold, the mold specific information may include, for example, the thickness of the copper plate head, the degree of wear, the state of the thermal sensor and / or the resistor of the thermal sensor. State, and stored by callable through maintenance cycle.

  In Patent Document 2, a segment inlet side, a segment outlet side, and a roller carrier pair are provided, and these roller carrier pairs carry a roller that extends over at least two support regions. An adjustment method for adjusting a roller segment of a continuous casting facility is disclosed. These carriers are mutually adjusted via an adjusting unit provided on one segment inlet side and an adjusting unit provided on one segment outlet side. The adjustment unit comprises two hydraulic cylinder units each provided on both sides of the support area.

From this, the known adjustment method is
The hydraulic cylinder unit can be adjusted by either position control or pressure control.
Via a hydraulic cylinder unit, the roller is position controlled in the metal strand guided by the roller, and is rolled down;
And when the pressure in each hydraulic cylinder unit reaches the threshold value, the hydraulic cylinder unit can be switched from the position adjustment operation mode to the pressure adjustment operation mode.
German Patent Publication No. 10028304 International Patent No. 99/46071

Starting from the prior art described at the outset, the problem underlying the present invention is to install separate and independent control and adjustment mechanisms with corresponding modules on the segments or directly on the hydraulic cylinders. , Thereby providing a “intelligents segment”, which further backs up other modes of operation if communication data is destroyed.

In order to solve the above problems, in the case of the device of the type described in the superordinate concept of claim 1 according to the present invention, in addition to the position sensor, the segment is further formed by a pressure sensor, a separate and independent adjustment system unit Is connected to the upper management system and power supply (12) via a fieldbus, eg Profibus, and a separate and independent adjustment system unit (14) is attached directly to the segment. And that the battery unit is provided on the segment to deal with communication failures.

In addition to the separate independent adjustment system unit embodiment using the adjustment unit and the control unit on the segment, there is an embodiment using high performance terminals on the segment as an alternative solution to reduce cable costs It has been.

When using the device according to the invention, the measurement signal and the control signal are processed directly on each segment in at least one separate and independent adjustment system unit, and the reference value target is sent from the management system provided at the higher level. It is proposed to supply power to the segment via a bus, for example the Profibus , and to feed back the measured value data to the management system as a control result or as a process state via the field bus as well.

In addition, the use of the present invention allows the separate and independent system unit (14) to have other measurement data, ie, monitoring of bearing force, temperature measurement and temperature control, calibration data and so on, as well as the necessary issues regarding segment reduction. Other segregated and independent segment-specific challenges related to the capture and processing of things are assigned.

By means of the present invention, even if the communication to the management system fails, the segment separates the data that has been adjusted or stored in the control module, for example with respect to the reference position or the adjusted reference force value. Can be controlled. The battery units required for this to deal with communication failures are likewise on the segment.

  At the same time, the advantage is that a reduction in electrical plug-in joints between the segment and the management system is achieved, thereby achieving a reduction in segment replacement time.

    Embodiments of the invention are represented in the drawings and are described in detail below.

  FIG. 1 shows a known structure of the strand guide 1. Several strand guide elements 2 are provided, and these strand guide elements are separated from the mold, and as the solidification progresses, the cast strands 3 are reliably passed through the SR or LCR region.

The segment 2 (shown in an enlarged manner) comprises a hydraulic adjustment device, which comprises a position sensor 7 and in particular a pressure sensor 8. In this case, the position-controlled and pressure-controlled segments 2 are pulled down at a position corresponding to the opening width and a predetermined reference value via a measuring / adjusting and controlling mechanism associated with the hydraulic cylinder. . The existing adjustment and control technology mechanisms in this regard are in the switching station 4 of the remote or continuous casting machine.

In FIG. 2, the strand guide embodiment provided by the present invention is formed such that, unlike the prior art, each segment 2 has a separate and independent adjustment system unit 14. This adjusting device comprises at least one independent position sensor and pressure sensors 7, 8 and is connected in particular to a management system 10 and a power supply 12 provided at a higher level via a bus connection 11, ie a profibus. ing. In this regard, the existing cable with the plug joint 13 requires only a part of the conductor system 5 with the plug joint 6 in the case of the known technique according to FIG. Another important advantage comes from the fact that if the transmission line or coupling element fails, the regulation or control is not paralyzed on the segment because the state is independent. Instead of the adjustment unit and the control unit on the segment 2, as an alternative solution, so-called high-performance terminals can be provided

Example according to the prior art. An embodiment in the form of the theme of the present invention.

DESCRIPTION OF SYMBOLS 1 Strand guide 2 Segment 3 Casting strand 4 Common adjustment mechanism 5 Lead wire 6 Insertion joint 7 from (5) Position sensor 8 Pressure sensor 9 Liquid core 10 of strand Management system 11 Fieldbus / Profibus 12 Power supply 13 11/12 insertion Joint 14 Separate and independent adjustment system unit

Claims (4)

A device for adjusting the opening width of a segment, comprising at least a position sensor (7) and a pressure sensor (8) for a continuous casting facility,
The apparatus comprises a strand guide (1) having an adjustment system and a segment (2) for providing a predetermined guidance of the cast strand using the measurement signal measured by the position sensor,
In this case, each segment (2) has at least one separate and independent regulation system unit (14), and this regulation system unit is connected to a management system (10) provided above. In
A separate and independent control system unit (14) is connected via a fieldbus (11) to a management system and a power supply (12) provided at a higher level;
A battery unit for coping with a communication failure is provided on each segment.   2. Device according to claim 1, characterized in that the conductor for supplying the bus connection (11) or the power supply (12) is provided with a plug-in joint for the purpose of segment replacement. A method of using an apparatus for adjusting the opening width of a segment for a continuous casting facility according to claim 1 or 2,
The measurement signal and the control signal are directly processed on each segment (2) in at least one separate and independent adjustment system unit (14), and the setting reference value is sent from the management system (10) provided at the higher level to the field. Supplying to the segment (2) via the bus (11) and feeding back the measured value data to the management system (10) via the field bus (11) as a control result or as a process state. A method of using the apparatus characterized by the above.   Use according to claim 3, characterized in that the segment independent information system unit (14) on the segment (2) is fed with segment specific information regarding roller diameter, aperture width, etc.

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