EP2203263A1 - Procédé de fonctionnement d'un circuit de refroidissement à saisie centralisée de caractéristiques de vannes et objets correspondants - Google Patents

Procédé de fonctionnement d'un circuit de refroidissement à saisie centralisée de caractéristiques de vannes et objets correspondants

Info

Publication number
EP2203263A1
EP2203263A1 EP08803522A EP08803522A EP2203263A1 EP 2203263 A1 EP2203263 A1 EP 2203263A1 EP 08803522 A EP08803522 A EP 08803522A EP 08803522 A EP08803522 A EP 08803522A EP 2203263 A1 EP2203263 A1 EP 2203263A1
Authority
EP
European Patent Office
Prior art keywords
valve
coolant
cooling section
section
automation device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08803522A
Other languages
German (de)
English (en)
Other versions
EP2203263B1 (fr
Inventor
Markus Forsch
Udo Borgmann
Stefan Schmors
Klaus Weinzierl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies Germany GmbH
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39832381&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2203263(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to PL08803522T priority Critical patent/PL2203263T3/pl
Publication of EP2203263A1 publication Critical patent/EP2203263A1/fr
Application granted granted Critical
Publication of EP2203263B1 publication Critical patent/EP2203263B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B21B37/76—Cooling control on the run-out table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0324—With control of flow by a condition or characteristic of a fluid
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0324—With control of flow by a condition or characteristic of a fluid
    • Y10T137/0363—For producing proportionate flow
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/87925—Separable flow path section, valve or closure in each

Definitions

  • the present invention relates to an operating method for a cooling section
  • cooling section has a plurality of coolant outlets, by means of which, in a normal operation of the cooling section, a rolling stock passing through the cooling section can be acted upon by a coolant,
  • coolant outlets are supplied with the coolant via supply lines
  • supply lines comprise stub lines, in each of which a valve is arranged
  • valves are individually openable and closable, so that by means of the valves, the supply of the coolant outlets with the coolant Sting way can be produced and interrupted,
  • the stub lines being supplied with the coolant via a main line common to the stubs,
  • an automation device of the cooling section opens the valves at valve-specific opening times during normal operation of the cooling section and closes at valve-specific closing times in order to apply the coolant to the rolling stock in accordance with a desired coolant flow rate
  • the automation device takes into account a respective valve-specific characteristic.
  • the present invention further relates to an operating program comprising machine code whose execution by an automation device for a cooling section causes the automation device to carry out such an operating method. Furthermore, the present de invention a disk on which such an operating program is stored in machine-readable form, and an automation device for a cooling section, which is programmed with such an operating program, so that it executes such operating method during execution of the operating program. Finally, the present invention relates to a corresponding cooling section.
  • valve-specific characteristics include in particular a switch-on delay and a switch-off delay.
  • the valve-specific characteristics change during operation.
  • the delays may be influenced by wear, for example.
  • a valve-related average flow rate often also varies. This variation can be caused by soiling, for example.
  • the determination of the switch-on delay and the switch-off delay of one of the valves is currently carried out manually (per stopwatch) to the knowledge of the applicants.
  • the operator of the cooling section starts the stopwatch simultaneously with a control signal for opening the respective valve. He stops the stopwatch when, according to his subjective assessment, the full amount of water flows to the rolling stock or to the roller table. This measured time then counts as the switch-on delay.
  • the operator of the cooling section determines a switch-off delay for the respective valve.
  • the mean amount of coolant that flows through the respective valve per unit of time is in the State of the art determined by means of Ausliterung. This measurement is very cumbersome and time consuming and is usually rarely done. It usually requires auxiliary tools specially adapted to the system, such as water tanks.
  • valve-specific opening times and the valve-specific closing times are determined in a cooling line model. Therefore, there is a suboptimal loading of the rolling stock with the coolant, which at the same time causes the rolling stock not to have the desired product properties as a result.
  • the object of the present invention is to provide possibilities, on the basis of which the valve-specific characteristics can be determined in a simple and reproducible manner.
  • the object is achieved by an operating method having the features of claim 1, an operating program having the features of claim 11 and a data carrier on which such an operating program is stored. Furthermore, the object is achieved by an automation device for a cooling section, which is programmed with such an operating program. Finally, the problem is solved by a corresponding cooling section.
  • Advantageous embodiments of the operating method are the subject of the dependent claims 2 to 9, advantageous embodiments of the cooling section subject of the dependent claims 15 to 24.
  • the respective valve-specific characteristic is achieved by opening and closing the respective valve and detecting the temporal effect caused thereby History of the coolant flow rate determined by means arranged in the main line measuring arrangement.
  • the respective valve-specific characteristic may in particular comprise a switch-on delay and / or a switch-off delay.
  • the automation device In order to determine the switch-on delay of one of the valves, the automation device preferably issues an opening command to the respective valve when the respective valve is closed, at a first activation time. Furthermore, in this case, the flow of coolant flowing in the main pipe is detected. The switch-on delay is determined in this case based on the first actuation time and the detected coolant flow rate.
  • the automation device can output a closing command in an analogous manner with the respective valve open to the respective valve at a second activation time.
  • the flow of coolant flowing in the main line is also detected.
  • the switch-off delay is determined in this case on the basis of the second activation time and the detected coolant flow rate.
  • the respective valve-specific characteristic may further comprise an average amount of coolant flow which flows through the respective valve when the respective valve is open. To determine the mean coolant flow, two alternative approaches are possible.
  • the quantity of coolant flow flowing through the main line is detected repeatedly and for the mean coolant quantity flow to be determined by forming the mean value of the detected coolant flow rates.
  • a quantity of coolant that has flowed through the main line at the beginning and at the end of an opening period can be detected, and the average amount of coolant Coolant flow rate can be determined by forming the difference of the detected amounts of refrigerant and dividing the difference by the opening period.
  • a calibration pressure prevailing in one of the supply lines is also detected in the calibration operation.
  • the automation device detects in this embodiment in normal operation a ruling in this supply line normal pressure.
  • the automation device can also take into account the calibration pressure and the normal pressure when determining the valve-specific opening times and the valve-specific closing times in addition to the respective valve-specific characteristic.
  • the supply line whose pressure is detected must not be identical to the main line, whose flow of refrigerant is detected (although this is of course possible). It is sufficient that the supply lines are communicatively connected with each other when they are different supply lines.
  • the main line has a measuring section which has at least two individual sections connected in parallel in terms of flow technology. Of the individual sections, one has a large and the other a small cross-section.
  • the measuring arrangement has a flow sensor arranged in the individual section with the small cross section for detecting the flow of coolant flow flowing in this individual section.
  • a main valve is arranged at least in the single section with the large cross section. At the beginning of the normal operation of the cooling section, the main valve is opened. The main valve is kept open during normal operation of the cooling section.
  • the main valve is closed at least temporarily, so that the flow of coolant flow flowing in the main line when the main valve is closed corresponds to the flow of coolant flow flowing in the single section with the small cross section.
  • the flowing coolant flow rates can be detected relatively accurately in a simple manner.
  • the opening and closing of the main valve by means of a corresponding control by the automation device takes place.
  • the calibration operation is performed automatically by the automation device.
  • FIGS. 5 and 6 are flowcharts
  • FIGS. 8 to 11 are flowcharts.
  • a cooling section 1 has a multiplicity of coolant outlets 2.
  • a rolling stock 3 which passes through the cooling section 1, can be acted upon by a coolant 4.
  • the coolant 4 is usually water or at least contains water as its main component.
  • the coolant outlets 2 are supplied with the coolant 4 via supply lines 5, 6.
  • the supply lines 5, 6 comprise branch lines 5 and a main line 6.
  • the branch lines 5 are connected via the main line 6 to the cooling line 5. supplied medium 4.
  • the main line 6 is in this case the stubs 5 together.
  • valves 7 are arranged, which are individually openable and closable.
  • the supply of the coolant outlets 2 with the coolant 4 Stich effetively can be produced and interrupted.
  • FIG. 1 purely by way of example, three coolant outlets 2 are actuated via two of the valves 7, two of the coolant outlets 2 via one of the valves 7 and one of the coolant outlets 2 via one of the valves 7.
  • this embodiment is purely exemplary.
  • the same number of coolant outlets 2 is actuated via each of the valves 7, that is, for example, always two or three coolant outlets 2.
  • the cooling section 1 has an automation device 8, which determines the operation of the cooling section 1.
  • the automation device 8 is usually software programmable.
  • the mode of operation of the automation device 8 is determined in this case by an operating program 9 which is supplied to the automation device 8 via a computer network (not shown, for example the Internet) or a mobile data carrier 10 (for example a CD-ROM).
  • the operating program 9 is hereby possibly on the mobile data carrier 10 in machine-readable
  • the automation device 8 is programmed with the operating program 9.
  • the operating program 9 comprises machine code 11, the processing of which by the automation device 8 causes the automation device 8 to carry out an operating method which is explained in detail below in conjunction with FIG. 2 and the further FIG.
  • the automation device 8 checks in a step S1 whether it should accept a calibration operation. If this is the case, the automation device 8 leads a step S2. Otherwise, the automation device 8 is in normal operation. In this case, it performs a step S3.
  • a respective valve-specific characteristic is determined at least for some of the valves 7 (usually for all valves 7).
  • the determination of the valve-specific characteristics is preferably carried out automatically by the automation device 8 here. However, it could also be done manually, at least in part.
  • the determination of the valve-specific characteristic comprises - per valve 7, the characteristic of which is to be determined - the opening and closing of the respective valve 7 and (as a result) the detection of a temporal effect caused thereby
  • step S3 the automation device 8 determines (for example in the context of a cooling line model) valve-specific opening times and valve-specific closing times for each valve 7. It takes into account when determining the valve-specific opening times and the valve-specific closing times the respective valve-specific characteristics of the respective valve 7. Further opens and the automation device 8 closes the valves 7 to the respective valve-specific opening times and closing times. In this way it is achieved that the rolling stock 3 is acted upon in accordance with a desired coolant flow rate with the coolant 4.
  • step S3 is known as such. Further explanations to step S3 are therefore omitted.
  • the respective valve-specific characteristic of a valve 7 comprises a switch-on delay Tl and a switch-off delay T2.
  • the Step S2 of FIG. 2 for example, comprise a procedure as will be explained in more detail below in conjunction with FIG.
  • the automation device 8 outputs an opening command for determining the switch-on delay T1 of one of the valves 7 in a step Sil when the respective valve 7 is closed to the respective valve 7 at a first activation time t1.
  • Step S12 the automation device 8 checks whether the coolant flow Q flowing in the corresponding supply line 5, 6 has already reached an upper threshold value SW1. Step S12 is executed until the refrigerant flow Q exceeds the upper one
  • Threshold SWl increases. Then, it goes to a step S13, in which the automation device 8 detects the corresponding time t2, hereinafter called opening time t2.
  • it determines the switch-on delay Tl by binning the difference between the opening time t2 and the first triggering time t1. In a simplest case, it determines the switch-on delay Tl by plotting the difference between the opening time t2 and the first triggering time t1.
  • step S15 the automation device 8 then outputs a closing command when the respective valve 7 is open to the respective valve 7 at a second activation time t3.
  • a step S16 the automation device 8 checks whether the coolant flow Q is smaller than a lower threshold SW2. Step S16 is executed until the refrigerant flow Q decreases below the lower threshold SW2. Then the evaluation device 8 proceeds to a step S17. In a step S17, the automation device 8 detects the time t4 at which the coolant flow rate Q has dropped below the lower threshold value SW2. The time t4 is called closing time t4 below.
  • the automation device 8 determines the switch-off delay T2 based on the second drive time t3 and the closing time t4.
  • the evaluation device 8 determines the switch-off delay T2 by forming the difference between the closing time t4 and the second triggering time t3.
  • the respective valve-specific characteristic can comprise an average coolant flow QM which flows through the respective valve 7 when the respective valve 7 is open.
  • the step S2 of FIG. 2 may be configured alternatively or in addition to the embodiment of FIG. 3 in accordance with FIGS. 5 and 6.
  • the embodiments according to FIGS. 5 and 6 are alternatives.
  • the automation device 8 opens one of the valves 7 in a step S21. Furthermore, in step S21 it sets an index n and a summation value QS for the coolant flow Q to zero.
  • step S22 the automation device 8 then carries out a step S22 in which it waits for a delay time.
  • step S22 is not mandatory, but only optional.
  • step S23 the automation device 8 detects the currently flowing coolant flow Q.
  • the combined coolant flow Q adds it - also in step S23 - to the previous total value QS added. Furthermore, the automation device 8 increases the index n in step S23.
  • step S24 the automation device 8 checks whether the index n has already reached a final value N. If this is not the case, the automation device 8 returns to step S23. Otherwise, it goes to a step S25.
  • step S25 the automation device 8 determines the mean coolant flow QM as the value entering the valve-specific characteristic by dividing the sum value QS by the final value N. Furthermore, the automation device 8 closes the respective valve 7 in step S25.
  • the procedure of FIG. 5 can be combined with the determination of the switch-on delay T1 and the switch-off delay T2 of FIG. Such a combination can be seen in particular from FIG. 4, in which the times at which in each case the coolant flow Q is detected in the course of step S23 are also indicated.
  • Step S31 opens the respective valve 7 and then - at least preferably - waits for a delay time. Then, in a step S32, it acquires a count Z of a coolant amount counter at a start time t5 and starts a timer.
  • step S33 the automation device 8 waits for the timer to expire and, at an end time t6, again detects the counter reading Z.
  • a step S34 the automation device 8 closes the corresponding valve 7.
  • the automation device 8 forms the difference ⁇ Z of the counter readings Z and divides the difference ⁇ Z by the time duration T at which the timer has expired, ie the difference between the end time t6 and start time t5.
  • the embodiment of FIG. 6 can also be combined with the determination of the switch-on delay Tl and the switch-off delay T2. This is shown in particular in FIG.
  • step S41 the automation device 8 closes all the valves 7.
  • step S42 the automation device 8 selects one of the valves 7.
  • step S43 the automation device 8 checks whether the respective core procedure of FIGS. 3, 5 and 6 already applies to all valves 7 for which she is to carry out the corresponding core procedure. If this is not the case, the automation device 8 selects the next relevant valve 7 in step S44 and then - for this newly selected valve 7 - goes back to the first step (Sil, S21 or S31) of the respective core procedure.
  • the main line 6 In normal operation of the cooling section 1, many of the valves 7 are opened at the same time as a rule, sometimes even all the valves 7.
  • the main line 6 therefore flows in the normal operation. drove a large amount of refrigerant flow Q.
  • the main line 6 has a large cross section, for example, a pipe diameter of 1,000 mm.
  • the given value of 1.000 mm is only an example.
  • the pipe diameter (or more generally the cross section) of the main line 6 can also be larger or smaller. If only one of the valves 7 is opened in such an embodiment, the flow velocity of the coolant 4 in the main line 6 is very low.
  • the main line 6 preferably has a measuring section 13 which has at least two individual sections 14, 15 connected in parallel with respect to flow.
  • the one single section 14 - hereinafter referred to as main section 14 - has a large cross-section, for example, the normal cross-section of the remaining main line 6.
  • the other single section 15 - hereinafter called additional section 15 - has a small cross-section. For example, it may have a tube diameter of 250, 200 or 150 mm. Again, the numerical values are to be understood as purely exemplary.
  • the cross section could also be larger or smaller.
  • the measuring arrangement 12 for detecting the coolant flow Q flowing in the main line 6 has a flow sensor 12a.
  • the flow sensor 12 a is arranged in the additional section 15. It detects the coolant flow Q flowing in the additional section 15.
  • a main valve 16 is arranged in the main section 14. When the main valve 16 is closed, therefore, the flowing in the main line 6 coolant flow Q corresponds to the flowing in the additional portion 15 coolant flow Q.
  • each individual section 14, 15, 15x is assigned a respective flow sensor 12a, 12b, 12x and one valve 16, 16 ', 16x.
  • each valve 16, 16 ', 16x By correspondingly opening and closing the valves 16, 16 ', 16x, it can be achieved in this case that at a certain point in time the quantity of coolant flow Q flowing in the main line 6 must flow through a single one of the individual sections 14, 15, 15x, so that the coolant flow rate Q detected there corresponds to the total flowing coolant flow Q.
  • the main valve 16 is preferably closed at the beginning of the calibration and at the end of the calibration (or - correspondingly - at the beginning of normal operation) opened again. In normal operation, the main valve 16 is kept open. Optionally, it may also be necessary to temporarily open the main valve 16 during the calibration operation. However, at least during the entire normal operation, the main valve 16 should be kept open.
  • FIG. 8 represents a modification of FIG. 2. It also contains the steps S 1 to S 3, which, however, are supplemented by steps S 51 to S 52.
  • step S51 the automation device 8 closes the main valve 16.
  • step S52 the automation device 8 opens the main valve 16. If in the main line 6 more valves 16 ', 16x are present, these valves 16', 16x are controlled in an analogous manner.
  • a pressure sensor 17 is arranged in one of the supply lines 5, 6 - preferably the main line 6 - .
  • the pressure sensor 17 detects the pressure in the respective supply line 5, 6.
  • the pressure is hereinafter referred to by the reference numerals p and p ', wherein the reference numeral p for the pressure p in normal operation (hereinafter normal pressure p called) and the reference p' for the pressure p 'in the calibration (hereinafter calibration pressure p' called) is used ,
  • step S61 the Automation device 8 during the calibration in the respective supply line 5, 6 pending calibration pressure.
  • step S71 the automation device 8 detects the normal pressure p present during normal operation.
  • step S72 corresponds in terms of the approach to step S3 of FIG 2.
  • the automation device 8 takes into account the caliber riertik p 'and the normal pressure p in the determination of the valve-specific opening times and the valve-specific closing times.
  • the automation device 8 automatically assumes the valve-specific characteristics which it determines in the calibration mode as new values.
  • the automation device 8 preferably displays the determined characteristics via a viewing device to an operator.
  • the operator can specify to the automation device 8 whether to adopt or reject the values.
  • the operator can optionally modify the determined characteristics.
  • the automation device 8 preferably checks the determined valve-specific characteristics for compliance with tolerance ranges. If the tolerance ranges are exceeded, an alarm message is issued.
  • the threshold values SW1, SW2 can be predefined for the automation device 8. Alternatively, they can be parameterized or specified by the operator. Furthermore, in order to determine the opening time t2 and the closing time t4, it is possible to use the time derivation instead of the coolant flow Q and to check at what time the time change of the cooling mean flow Q falls below a threshold.
  • valve-specific characteristics not only for individual valves 7, but also for entire valve groups (for example, every other valve 7, every third valve 7, etc.).
  • the further flow sensor 12b may be required, in the additional section 15, the additional valve 16 '.
  • the reliability of the calibration can be increased if the automation device 8 in addition to the detected coolant flow Q feedback from the valves 7, 16, 16 'are supplied. Based on this feedback, it can be recognized, for example, that the respective valve 7, 16, 16 'is in one of its end positions (completely open or completely closed).
  • the automation device 8 furthermore preferably carries out plausibility checks and optionally issues alarm messages to the operator.
  • the operator of the automation device 8 can specify with respect to which of the valves 7 the determination of the valve-specific characteristic is to be carried out. For example, the operator can mark individual valves 7 or valve groups as defective and thus hide from the determination of the valve-specific characteristic or, conversely, request the determination of the respective valve-specific characteristics with respect to individual valves 7 or valve groups.
  • the automation device 8 it is possible for the automation device 8 to actuate the valves 7 (and possibly also the valves 16, 16 ', 16x) and to acquire the relevant measured values Q, t2, t4, but to determine the valve-specific characteristics themselves Operator is done.
  • valves 7 and possibly also the valves 16, 16 ', 16x
  • the automation device 8 for example by means of the measuring arrangement 12, the time profile of the coolant flow Q could be detected and output to the operator. For example, a record could be made on paper.
  • the operator would have to make both the determination of the relevant times t2, t4 and the comparison with the threshold values SW1, SW2 and also read off the coolant flow rates Q itself.
  • the determination of the valve-specific characteristics would not be automated by the
  • Automation device 8 done. Furthermore, it is possible that even the control of the valves 7 (and possibly also of the other valves 16, 16 ', 16x) is not fully automated, but is always done only when the automation device 8 is given by the operator a corresponding control command.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Control Of Heat Treatment Processes (AREA)

Abstract

Circuit de refroidissement comportant une pluralité de sorties (2) d'agent de refroidissement qui, en fonctionnement normal du circuit de refroidissement (1), soumettent un produit de laminage (3) traversant le circuit de refroidissement à l'action d'un agent de refroidissement (4). Les sorties (2) d'agent de refroidissement sont alimentées en agent de refroidissement (4) par des conduits de dérivation (5) et par une conduite principale (6) commune aux conduits de dérivation (5). Dans les conduits de dérivation (5) sont montées des vannes (7) à ouverture et fermeture indépendantes, de manière à pouvoir établir et interrompre l'alimentation des sorties (2) d'agent de refroidissement en agent de refroidissement (4) par conduit de dérivation. Un dispositif d'automatisation (8) du circuit de refroidissement (1), en fonctionnement normal du circuit de refroidissement (1), ouvre et ferme les vannes (7) à des moments d'ouverture et de fermeture spécifiques aux vannes, afin de soumettre le produit de laminage (3) à l'action de l'agent de refroidissement (4) conformément à un écoulement nominal de l'agent de refroidissement. Cette installation d'automatisation tient compte d'une caractéristique spécifique à chaque vanne lors de la détermination des moments d'ouverture et de fermeture spécifiques aux vannes. En fonctionnement de calibrage du circuit de refroidissement (1), la caractéristique spécifique à chaque vanne est déterminée, au moins pour certaines vannes (7), par ouverture et fermeture de la vanne (7) correspondante et par saisie de l'écoulement (Q) dans le temps ainsi provoqué de l'agent de refroidissement, au moyen d'un dispositif de mesure (12) monté dans la conduite principale (6).
EP20080803522 2007-09-27 2008-09-02 Procédé de fonctionnement d'un circuit de refroidissement à saisie centralisée de caractéristiques de vannes et objets correspondants Active EP2203263B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08803522T PL2203263T3 (pl) 2007-09-27 2008-09-02 Sposób eksploatacji odcinka chłodzenia ze scentralizowanym odczytem charakterystyk zaworów i korespondujące z tym przedmioty

Applications Claiming Priority (2)

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DE200710046279 DE102007046279A1 (de) 2007-09-27 2007-09-27 Betriebsverfahren für eine Kühlstrecke mit zentralisierter Erfassung von Ventilcharakteristiken und hiermit korrespondierende Gegenstände
PCT/EP2008/061551 WO2009043668A1 (fr) 2007-09-27 2008-09-02 Procédé de fonctionnement d'un circuit de refroidissement à saisie centralisée de caractéristiques de vannes et objets correspondants

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EP2203263A1 true EP2203263A1 (fr) 2010-07-07
EP2203263B1 EP2203263B1 (fr) 2012-11-21

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EP (1) EP2203263B1 (fr)
CN (1) CN101952059B (fr)
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DE (1) DE102007046279A1 (fr)
PL (1) PL2203263T3 (fr)
RU (1) RU2479369C2 (fr)
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Publication number Publication date
BRPI0817573A2 (pt) 2015-08-18
RU2479369C2 (ru) 2013-04-20
CN101952059B (zh) 2013-06-19
PL2203263T3 (pl) 2013-04-30
CN101952059A (zh) 2011-01-19
US20100312399A1 (en) 2010-12-09
DE102007046279A1 (de) 2009-04-09
UA99306C2 (ru) 2012-08-10
US8463446B2 (en) 2013-06-11
WO2009043668A1 (fr) 2009-04-09
WO2009043668A8 (fr) 2009-05-28
RU2010116413A (ru) 2011-11-10
EP2203263B1 (fr) 2012-11-21

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