EP1289692B1 - Device for local processing of casting data arising from measurement data obtained from a continuous casting mould by means of sensors and use of the device - Google Patents

Abstract

A method for local processing of casting data arising from measurement data obtained from a continuous casting mold by sensors. The data processing is carried out using a process control computer pertaining to the control system of the continuous casting installation. The measurement and control data is immediately collected from the continuous casting mold in cold field modules, converted to bus signals in a bus line, stored at least in the control system of the continuous casting installation, and/or processed.

Description

The invention relates to a device for decentralized casting data processing of the measurement data obtained from a continuous casting mold via sensors in a process computer of the control of the continuous casting plant, as well as the use of this device.

In continuous casting plants, horizontal rows of thermocouples and resistance thermocouples are arranged on the continuous casting mold, the thermo leads of which are each routed via two terminal connections to a so-called master cable. At e.g. 60 thermocouples and 40 resistance thermocouples cause 240 thermal cables, all of which must be routed to the trunk cable.

Initially, the thermoelectric cables run to transducers. The trunk cable is connected to a so-called multi-coupling (coupling and counter-coupling) to an energy supply outside the oscillating continuous casting mold on the rigid part of the continuous casting plant, the so-called "mainland". All thermowires, terminal boxes and the trunk cable are exposed to a temperature of approx. 60 - 100 ° C. In addition to the heat in the casting operation unavoidable contamination, eg by slag splash, and also occurs moisture. Since the thermocouples and resistor thermocouples operate with voltages in the 10 - 500 mV range, electromagnetic fields of other organs on the continuous casting mold also have an effect. This design requires for various units on the continuous casting mold (eg the adjustment for the narrow side plates, for displacement sensor, remote stations for temperature measuring points, etc.) increased changeover times, high installation costs and high installation and cabling, high material costs and high maintenance.

The prior art includes a device for determining the melt level in a continuous casting mold (DE - OS 26 55 640). However, this design provides only means for detachably mounting a detector box in the water jacket of the continuous casting mold and cooling water inlet and outlet means in the detector box for guiding cooling water through the detector box for cooling the electromagnetic coil with protective housing built into it. Therefore, this solution can not be applied to thermocouples and resistor thermocouples disposed on the continuous casting mold. The measuring method is also designed differently.

The use of fieldbus technology significantly simplifies installation and maintenance in control engineering. See: "Bus systems, fieldbus yes, but which ones?" MESSTEC, Bd 3/1996, pages 1-5, XP002290053.

The invention is based on the object, by electronic means u.a. to process the casting data measured via sensors in more efficient ways and thereby also to simplify the device.

The stated object is achieved by the device according to claim 1. This device can be used so that the measurement and control data collected in cooled fieldbus modules directly on the continuous casting mold and transferred in bus signals in a bus line and stored at least in the control of the continuous casting and / or processed. This considerably shortens and simplifies the data path and also simplifies the device, as will be explained in more detail below. It is particularly advantageous that only the connection to a located on the "mainland" terminal box to solve or connect, so that the change times are significantly reduced, the installation and cabling is reduced, the material costs are reduced, the maintenance is reduced and As a result, the application of steel can be significantly increased. The data processing can also take place in the fieldbus module itself or even via an intemet connection with global connection. In this case, data can be collected by sensors or actuators, namely Drehgebem, Winkelmessgebem (so-called. Inklinometem), pumps, flow meters, controllable valves electric motors u. etc. ..

In an embodiment of the invention, it is provided that the recorded measurement data or additionally input specific data via the bus lines are given as control signals to actuators and / or actuators in the region of the continuous casting mold. As a result, the system can also be actively used to control or regulate the casting process.

Another advantage results from the fact that in the fieldbus modules on the continuous casting mold specific information about the thickness of the copper plate, the degree of wear, the state of the thermal sensors and / or the resistance thermosensors and the maintenance cycles are stored retrievable.

A further development of the invention provides that the data exchange and the power supply is carried out at least between the fieldbus modules and the process computer via a hybrid coupling. As a result, both data streams and energy flows can be conducted in an electrical conductor.

In an embodiment, it is provided that the hybrid coupling is formed from a communication bus and a power supply. The entire streams run through a single hybrid cable.

Another advantage is that the hybrid coupling is operated in the presence of a cooling medium. In this case, the continuous casting mold cooling water can also be used for cooling. It is also possible to use a foreign supplied coolant (gas or liquid).

Due to the design of the device for decentralized casting data processing, all sensors on the continuous casting mold immediately be cabled to remote transducers via a short signal path. Such fieldbus modules are then located directly in proximity to the sensor.

For cooling different variants are created. Thus, according to a simple suggestion, the fieldbus modules can be cooled by means of the existing continuous casting mold coolant flow. As a result, a minimal additional effort is achieved.

Another variant provides that the fieldbus modules are enclosed in a cooled protective housing. Here is a foreign cooling with exclusion of moisture in the supplied cooling medium appropriate.

The access of moisture and the independence of the moisture content of air can be achieved according to further features, by the fact that in the protective housing an air conditioning unit for cooling miteingebaut.

Another improvement of the invention is that the communication bus is formed physically from electrical or electronic line technology, optical fiber technology or wireless transmission technology.

Furthermore, it is provided that the wireless transmission technology consists of a radio transmission or is formed on the basis of infrared radiation.

Another development of the invention provides that by means of the coolant flow in the continuous casting mold a generator can be driven, which supplies electrically operated organs on the continuous casting mold. The energy supply for the generator consists in the flow energy of the cooling water.

A variant of this is that the drive movement for the generator from the continuous casting mold oscillation movement is derivable.

In the drawing, an embodiment of the invention is shown in more detail and will be explained below.

Fig. 1

ein Blockschaltbild der Stranggießkokille mit Feldbus-Modulen,

Fig. 2

eine Draufsicht auf die Stranggießkokille mit den Feldbus-Modulen,

Fig. 3

eine Seitenansicht zu Fig. 2 und

Fig. 4

eine perspektivische Ansicht auf den Wasserkasten einer Stranggießkokille.

Show it:

Fig. 1

a block diagram of the continuous casting mold with fieldbus modules,

Fig. 2

a top view of the continuous casting mold with the fieldbus modules,

Fig. 3

a side view of Fig. 2 and

Fig. 4

a perspective view of the water box of a continuous casting mold.

The method for decentralized casting data processing of the measurement data obtained on a continuous casting mold 1 via thermosensors or resistance thermosensors 10 in a process computer 11 having a redundant connection 11a of the control of the continuous casting installation (FIG. 1) is carried out in such a way that it is distributed among a plurality of the continuous casting mold 1 arranged thermosensors and / or resistance thermosensors 10 collected measured data collected in a cooled fieldbus module 2 directly on the continuous casting mold 1 and transferred as bus signals in a bus line 3 and stored in the control of the continuous casting and processed. In this case, the recorded measurement data or additionally entered, specific data via the single bus line 3 can be given as control signals to actuators and / or actuators in the region of the continuous casting mold 1. As actuators come e.g. the copper plates 4 in the form of the narrow side plates and the actuators as their associated drives into consideration. The kokill specific information relates to e.g. the copper plate thickness, the degree of wear, the state of the thermal sensors or the resistance thermosensors 10, as well as the maintenance cycles.

According to Fig. 1, the data exchange via the bus lines 3 and a terminal box 5 with transformer between the fieldbus modules 2 and the process computer 11 via a hybrid coupling instead. The hybrid coupling forms a hybrid cable 6 with a communication bus 7 and a power supply. The hybrid cable 6 can also be operated under a cooling 8 as the fieldbus modules 2. In principle, the available continuous casting mold coolant flow 8a can be used as cooling 8 for the fieldbus modules 2.

The fieldbus modules 2 are surrounded by a cooled protective housing 9. In the protective housing 9, if necessary, a separate air conditioning unit 12 is installed (Figures 2 and 3). The protective housing 9 rests on the continuous casting mold 1 or on the water box 19, so that the fieldbus modules 2 are at the shortest distance from the thermal sensors 10 and are cooled by the coolant flow 8a and / or the air conditioning unit 12. The same applies to the thermoelectric lines 15, which are guided in cable bushings 14 of the thermal sensors 10 in the fieldbus modules 2.

According to FIG. 4, the communication bus 7 consists physically of electrical or electronic line technology or of optical waveguide technology or of wireless transmission technology, wherein the wireless transmission technology can be formed from a radio transmission 16 or due to infrared rays.

The fieldbus modules 2 (remote module) and a transceiver module 20 are arranged as electrically operated members 18 on the continuous casting mold 1. Within a cooling water guide 13, a generator 17 is arranged, which generates electricity via the coolant flow 8a and represents a power supply 21 for the electrically operated members 18.

The drive movement for the generator 17 can also be derived from the continuous casting mold oscillation movement.

LIST OF REFERENCE NUMBERS

1

continuous casting

2

Fieldbus module

3

Bus line

4

copperplate

5

Terminal box with transformer

6

hybrid cable

7

communication

8th

cooling

8a

Coolant flow

9

housing

10

Thermal sensors, resistance thermosensors

11 1

process computer

11 a

redundancy connection

12

air conditioning unit

13

Cooling water flow

14

Grommet

15

Thermo line

16

radio transmission

17

generator

18

electrically operated organ

19

cistern

20

Transceiver module

21

power supply

Claims (12)

1. Equipment for decentral casting data processing of the measuring data, which are obtained at a continuous casting mould (1) by way of sensors (10), in a process computer (11) for control of the continuous casting plant, characterised in that several field bus modules (2) connected with the thermosensors (10) and/or the resistance thermosensors (10) are provided directly at the continuous casting mould (1) and with a cooling (8), wherein the field bus modules (2) are enclosed in a cooled protective housing (9) and that the data exchange and energy supply take place at least between the field bus modules (2) and the process computer (11) by way of a hybrid coupling (6, 7, 21).
2. Equipment according to claim 1, characterised in that the field bus modules (2) are coolable by means of the continuous casting mould coolant flow (8a) which is present.
3. Equipment according to one of claims 1 and 2, characterised in that air-conditioning apparatus (12) for cooling is incorporated in the protective housing (9).
4. Equipment according to one of claims 1 to 3, characterised in that the communications bus (7) is physically formed by electrical or electronic conductor technology, optical conductor technology or wireless transmission technology.
5. Equipment according to one of claims 1 to 4, characterised in that the wireless transmission technology consists of a radio transmission (16) or is formed by way of infrared radiation.
6. Equipment according to one of claims 1 to 5, characterised in that a generator (17), for which supplies electrically operated elements (18) on the continuous casting mould (1), is drivable by means of the coolant flow (8a) in the continuous casting mould (1).
7. Equipment according to claim 6, characterised in that the drive movement for the generator (17) is derived from the continuous casting mould oscillatory motion.
8. Use of the equipment, according to claim 1, for decentral casting data processing of the measurement data, which is obtained at a continuous casting mould (1) by way of sensors (10), in a process computer (11) of the control of a continuous casting plant, characterised in that measurement in control data in the cooled field bus modules (2) are directly collected on the continuous casting mould (1), transferred into bus signals in a bus line (3) and stored and/or processed at least in the control of the continuous casting plant.
9. Use according to claim 8, characterised in that the received measurement data or additionally input specific data are issued by way of the bus lines (3) as control signals to setting elements and/or actuators in the region of the continuous casting mould (1).
10. Use according to one of claims 8 and 9, characterised in that mould-specific data about the copper plate thickness (4), the degree of wear, the state of the thermosensors (10) and/or the resistance thermosensors (10) and the maintenance cycles can be stored in the field bus modules (2) on the continuous casting mould (1) to be able to be called up.
11. Use according to one of claims 8 to 10, characterised in that the hybrid coupling (6) is formed from a communications bus (7) and an energy supply.
12. Use according to claim 11, characterised in that the hybrid coupling (6) is operated in the presence of a cooling medium.

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