EP3495056A1 - Commande améliorée de la gestion de l'eau d'un circuit de refroidissement - Google Patents

Commande améliorée de la gestion de l'eau d'un circuit de refroidissement Download PDF

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Publication number
EP3495056A1
EP3495056A1 EP17206426.3A EP17206426A EP3495056A1 EP 3495056 A1 EP3495056 A1 EP 3495056A1 EP 17206426 A EP17206426 A EP 17206426A EP 3495056 A1 EP3495056 A1 EP 3495056A1
Authority
EP
European Patent Office
Prior art keywords
coolant
pump
control device
total
outlets
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
EP17206426.3A
Other languages
German (de)
English (en)
Other versions
EP3495056B1 (fr
Inventor
Klaus Weinzierl
Manfred Eder
Jurij Razinkov
Christian Schlapak
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 Austria GmbH
Primetals Technologies Germany GmbH
Original Assignee
Primetals Technologies Austria GmbH
Primetals Technologies Germany GmbH
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
Application filed by Primetals Technologies Austria GmbH, Primetals Technologies Germany GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP17206426.3A priority Critical patent/EP3495056B1/fr
Priority to US16/771,500 priority patent/US11135631B2/en
Priority to EP18800210.9A priority patent/EP3723919A1/fr
Priority to CN201880079935.XA priority patent/CN111432950B/zh
Priority to PCT/EP2018/081500 priority patent/WO2019115145A1/fr
Publication of EP3495056A1 publication Critical patent/EP3495056A1/fr
Application granted granted Critical
Publication of EP3495056B1 publication Critical patent/EP3495056B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • 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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • 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
    • 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
    • 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
    • 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
    • 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

Definitions

  • the present invention is further based on a computer program comprising machine code, which is provided by a control device is executable for a cooling line, wherein the processing of the machine code by the control device causes the control device operates the cooling section according to such an operating method.
  • the present invention is further based on a control device for a cooling section, wherein the control device is programmed with such a computer program, so that the control device operates the cooling section according to such an operating method.
  • cooling sections rolled metal, in particular steel, is cooled after rolling.
  • cooling sections are the downstream of a hot strip mill cooling section with or without intensive cooling and the so-called Quette a plate mill.
  • an exact temperature control is common.
  • the defined and exact application of a desired amount of coolant is of great importance.
  • cooling between a roughing train and a finishing train due to the high volume requirement of coolant, particularly high demands are placed on the dynamics of the management of the coolant.
  • the coolant is usually water or at least substantially consists of water.
  • the amounts of water to be applied are considerable. In some cases, up to 20,000 m 3 / h must be applied to the hot rolling stock over a distance of only a few meters (for example 10 m to 20 m). For precise control of the cooling, it is not only necessary to timely and correctly control the valves of the cooling section. In addition, it is also necessary to provide the corresponding amounts of water on the inlet side of the valves and also to take them back again. The required control times often range around 1 second, in some cases even less than 1 second.
  • the pipe system for supplying the coolant outlets has in this case a much greater length, for example, about 100 m. It is even possible that no water tank can be installed at all. In this case, the piping system, which conveys the coolant to the coolant outlets, may have a length of several 100 m. If it is not possible to place a water tank sufficiently close to the coolant outlets, then changing the requested coolant quantity will require a larger amount of water - often several hundred tons - to be accelerated. This acceleration leads in the prior art to a delayed provision of the required amounts of coolant.
  • Another known solution is to provide a riser with an overflow in the vicinity of the cooling area.
  • a riser requires less space than a water tank. But it can save only a small amount of coolant. In this case, therefore, the maximum expected amount of coolant is continuously promoted to the cooling area.
  • the height of the riser creates a nearly constant backpressure that is independent of the actual need for coolant. Again, the consumption of coolant and energy is correspondingly high, as always an unnecessarily large amount of coolant is provided. Furthermore, the pressure can not be adjusted. It always corresponds to the pressure resulting from the height of the column of coolant in the riser to the overflow.
  • the object of the present invention is to provide possibilities by means of which the required amount of coolant can be provided in an efficient manner at any time with high accuracy, even without greater or lesser storage capability for coolant between the pump and the coolant outlets.
  • an operating method of the aforementioned type is configured in that the control device of the cooling section cyclically for the respective time in determining the pump pressure, which should prevail on the output side of the pump, not only the total coolant flow and the working pressure of the coolant taken into account, but in addition also takes into account a change in the total coolant flow.
  • the control device of the cooling section cyclically for the respective time in determining the pump pressure, which should prevail on the output side of the pump, not only the total coolant flow and the working pressure of the coolant taken into account, but in addition also takes into account a change in the total coolant flow.
  • the control device when determining the pump pressure, takes into account a line resistance of the line system to be overcome by the total coolant flow. This results in an even higher accuracy in the determination of the pump pressure and thus the determination of the driving state of the pump.
  • the control device in addition to the coolant streams which are to be discharged via the coolant outlets at the respective time, the control device is also known for a forecast horizon of predicted coolant flows which are to be discharged via the coolant outlets for a number of future times. In this case, it is possible that the control device takes into account the predicted coolant flows of at least one of the future points in time when determining the activation state of the pump.
  • control device determines the associated total coolant flow for at least one future point in time and to take it into account when determining the change in the total coolant flow.
  • the deviation from the total coolant flow for the respective time can be determined.
  • control device continues to determine the change in the total coolant flow in addition to the predicted coolant flows of the at least one future point in time also takes into account the total coolant flow of at least one past time.
  • the respective time is preferably in the middle between the at least one future time and the at least one past time.
  • the coolant outlets comprise useful coolant outlets and bypass coolant outlets.
  • the hot rolling stock is cooled exclusively by means of the coolant streams discharged via the useful coolant outlets.
  • the bypass coolant outlets serve as a means to affect the overall flow of coolant without changing the coolant flows applied to the hot material.
  • the control device determines, based on the to be discharged for the respective time and / or the future time points on the Nutz coolant outlets coolant flows to be delivered for the respective time and / or future times via the bypass coolant outlets coolant flows such that each total coolant flow maintained at an earlier point in time prior to the determination of the previous change in the total flow of refrigerant.
  • the time profile of the drive state of the pump has a relatively low dynamics. So it can be achieved a sufficiently “smooth” control of the pump. This increases the life of the pump and simplifies its control.
  • This procedure corresponds to the usual procedure in the context of a model predictive control.
  • the coolant outlets include payload coolant outlets and bypass coolant outlets.
  • the functionality of the corresponding coolant outlets is also as before.
  • the control device determines the coolant flows to be delivered via the bypass coolant outlets such that coolant flows to be delivered via the bypass coolant outlets are as close as possible to a bypass target coolant flow and a change in the total amount to be delivered via the payload coolant outlets and the bypass coolant outlets Total coolant flow is as low as possible.
  • the valves may be in individual cases switching valves that can only assume two switching states, namely fully open and fully closed.
  • valves stepless or at least in several stages controllable.
  • control device determines the working pressure such that the activation states of the valves maintain minimum distances to a minimum activation and a maximum activation and the activation state of the pump is kept constant as far as possible.
  • the pump must be controlled with less dynamics.
  • control device preferably additionally takes into account a height difference to be overcome.
  • the height difference represents a constant offset for the pump pressure.
  • the control device additionally determines a control signal for a pump connected in parallel short-circuit valve and controls the short-circuit valve according to the determined control signal.
  • a control signal for a pump connected in parallel short-circuit valve controls the short-circuit valve according to the determined control signal.
  • operating states of the pump can be reached, which would be impossible or inadmissible without a short-circuit valve.
  • the recirculated coolant flow via the short-circuit valve can be supplied as needed to the coolant reservoir or a connecting line between the coolant reservoir and the pump.
  • the object is further achieved by a computer program having the features of claim 13.
  • the execution of the computer program by the control device causes the control device to operate the cooling path according to an operating method according to the invention.
  • control device for a cooling section with the features of claim 14.
  • the control device is programmed with a computer program according to the invention, so that the control device operates the cooling section according to an operating method according to the invention.
  • the cooling section has a control device according to the invention which operates the cooling section according to an operating method according to the invention.
  • a cooling region of the cooling section, within which the coolant is applied to the hot rolling stock can be arranged in particular within a rolling train and / or arranged upstream of a rolling train and / or downstream of the rolling train.
  • the term "and / or” is to be understood in the sense that the cooling area can be arranged completely within the rolling train, completely downstream of the rolling train or partially disposed within the rolling train and partially downstream of the rolling train. Analogous designs apply to an arrangement in front of the rolling train.
  • FIG. 1 has a cooling section on a cooling area 1.
  • a liquid coolant 2 - usually water - are applied to a hot rolling stock 3 and thereby the hot rolling 3 are cooled.
  • the hot rolling stock 3 is made of metal, for example steel.
  • a number of useful coolant outlets 4 are arranged in the cooling area 1.
  • the cooling area 1 is as shown in FIG FIG. 1 partially arranged within a rolling train. This is in FIG. 1 indicated that one of the Nutz-Kühlschauslässe 4 upstream of a last mill stand 5 of the rolling mill (for example, a finishing train) is arranged. However, the cooling area 1 could also be arranged completely within the rolling train.
  • the cooling area 1 is also partially downstream of the rolling train. This is in FIG. 1 indicated that the other useful coolant outlets 4 are arranged downstream of the last rolling mill 5 of the rolling mill. However, the cooling area 1 could just as easily be arranged downstream of the rolling train. In the case of partial or complete readjustment, the cooling region 1 can be arranged, for example, between the last rolling stand 5 and a reel 5 '. Furthermore, it is also possible for the cooling region 1 to be arranged completely or partially upstream of the rolling train. This is in FIG. 1 and also the other figures are not shown.
  • bypass coolant outlets 6 are preferably still present. In FIG. 1 only a single such bypass coolant outlet 6 is shown. As a rule, only a single bypass coolant outlet 6 is present. In principle, however, a plurality of bypass coolant outlets 6 may also be present. Independently However, cooling of the hot rolling stock 3 takes place exclusively via the useful coolant outlets 4. Coolant 2, which is discharged via one of the bypass coolant outlets 6, does not serve to cool the hot rolling stock 3 Part of the coolant 2 via a collecting container 6 'collected and returned. The return of the coolant 2 from the collecting container 6 'is in FIG. 1 not shown.
  • the cooling section has a pump 7.
  • the pump 7 can remove coolant 2 from a coolant reservoir 8, for example a water tank, and supply the coolant outlets 4, 6 via a line system 9.
  • the term "pump" is used in the context of the present invention in a generic sense.
  • the pump 7 may be a single pump or a plurality of pumps arranged one behind the other and / or in parallel.
  • valves 10 are arranged between the pump 7 and the coolant outlets 4, 6 .
  • coolant flows Wi which are discharged via the coolant outlets 4, 6, can be controlled.
  • the index i stands, if it has the value 0, for the bypass coolant outlet 6, the associated coolant flow W0 thus for the coolant flow discharged via the bypass coolant outlet 6.
  • the index i if it has the value 1, 2, ... n, for each one of the Nutz coolant outlets 4, the associated coolant flow Wi so for the output over the respective Nutz-Kühlstoffauslass 4 coolant flow.
  • the coolant flows Wi have the unit m 3 / s.
  • the cooling section has a control device 11, which operates the cooling section according to an operating method which will be explained in more detail below.
  • the control device 11 is generally designed as a software programmable control device. This is in FIG. 1 indicated that in the controller 11, the characters " ⁇ P" are drawn for microprocessor.
  • the control device 11 is programmed with a computer program 12.
  • the computer program 12 comprises machine code 13, which can be processed by the control device 11.
  • the programming of the control device 11 with the computer program 12 causes the control device 11 to operate the cooling path according to the operating method explained below.
  • the control device 11 determines the coolant flow W0.
  • the coolant flow W0 is the coolant flow that is to be discharged at the respective time via the bypass coolant outlet 6.
  • the determination of the coolant flow W0 is effected as a function of the sum of the coolant flows Wi to be delivered via the useful coolant outlets 4. This will become apparent later.
  • control device 11 forms by summing the coolant flows Wi a valid for the respective time total coolant flow WG.
  • a step S4 the control device 11 determines a change ⁇ WG of the total coolant flow WG.
  • the change ⁇ W of the total refrigerant flow WG indicates the extent to which the total refrigerant flow WG changes at each time point. It is therefore the derivation of the total coolant flow WG over time.
  • the control device 11 can use a total coolant flow WG 'known from a previous cycle to determine the change ⁇ W of the total coolant flow WG.
  • step S5 the controller 11 updates the total refrigerant flow WG 'for the previous cycle. For example, it assumes the value for the total coolant flow WG, which it has determined in step S3.
  • the controller 11 sets a working pressure pA (unit: N / m 2 ).
  • the working pressure pA is the pressure that the coolant 3 on the input side of the valves 10 should have. It is possible that the working pressure pA of the control device 11 is predetermined. Alternatively, it is possible that the control device 11 independently determines the working pressure pA.
  • the activation states Ci can in particular be open positions of the valves 10.
  • the valves 10 are preferably steplessly stepless or at least in several stages.
  • gi is a characteristic valid for the respective valve 10.
  • the characteristic curve gi is a function of the respective drive state Ci. It indicates, for a nominal pressure pA0, how great, at a certain activation state Ci, is the coolant flow Wi flowing through the respective valve 10. This is in FIG. 3 for a single valve 10 shown purely by way of example.
  • the characteristic curves gi of the valves 10 can either be taken from data sheets of the manufacturers of the valves 10 or be determined experimentally.
  • the control device can, for example, solve equation (1) for Ci.
  • the amount of coolant 3 present in the line system 9 therefore results in AL, the mass m of the coolant 3 is ⁇ AL, where ⁇ is the density of the coolant 3 (in the usual unit kg / m 3 ).
  • the required acceleration a results in ⁇ WG / A. This results in the required force F to ma, ie the product of mass m and acceleration a.
  • the line system 9 has a length L of 100 m and a cross-section A of 1 m 2 .
  • the coolant 3 is water.
  • the total coolant flow WG is to be increased from 2 m 3 / s to 2.5 m 3 / s.
  • a pressure p2 of 50 kPa is required for the required acceleration of the amount of water in the line 9.
  • the control device 11 determines in a step S9 an associated control state CP for the pump 7, so that the output side of the pump 7, the desired pump pressure pP is reached.
  • the control device 11 takes into account the pump pressure pP, the total coolant flow WG and a suction pressure pS, the input side of the pump 7 prevails.
  • the suction pressure pS can be predetermined for the control device 11 or can be detected metrologically. It can, depending on the situation of the individual case, have a negative or a positive value or also the value 0.
  • the control device 11 preferably uses a pump characteristic to determine the drive state CP for the pump 7.
  • the pump characteristic sets the total coolant flow WG, the suction pressure pS on the input side of the pump 7 and the pump pressure pP on the output side of the pump 7 in relation to each other.
  • the pump characteristic can, for example, as shown in FIG FIG. 4 as input parameters, the total coolant flow WG and the difference between the pump pressure pP and suction pressure pS have and deliver the associated control state CP as an output parameter.
  • the drive state CP can be in particular the speed of the pump 7. Such characteristics are well known to those skilled in the art.
  • control device controls the valves 10 and the pump 7 in a step S10 in accordance with the determined activation states Ci, CP.
  • step S10 the controller 11 returns to step S1.
  • the controller 11 thus executes the steps S1 to S10 cyclically, wherein the respective embodiment is valid for a respective time.
  • a strictly cyclical execution takes place, ie there is a fixed working cycle T, within which steps S1 to S10 are executed once each.
  • the working cycle T can be, for example, 0.1 seconds to 1.0 seconds, preferably between 0.2 seconds and 0.5 seconds, in particular about 0.3 seconds.
  • the control device 11 may use the refrigerant flow W0 discharged through the bypass refrigerant outlet 6 to equalize the drive state CP of the pump 7.
  • WG ' is the total coolant flow of the previous time.
  • W0 * is a predetermined coolant flow predetermined for the bypass coolant outlet 6.
  • ⁇ and ⁇ are weighting factors. They are not negative. Furthermore, without limiting the generality, it can be required that the two weighting factors ⁇ , ⁇ add up to 1.
  • the double strokes stand for a standard. The standard may in particular be the usual square standard.
  • the coolant flows Wi for the Nutz coolant outlets 4 for the respective time are the controller 11 fixed.
  • the function F thus has as the only freely selectable parameter to be delivered via the bypass coolant outlet 6 coolant flow W0. It is therefore possible to determine the minimum of the function F and to use as the coolant flow W0 for the bypass coolant outlet 6 the value at which this minimum results. As a result, it is achieved that the coolant flow W0 to be discharged via the bypass coolant outlet 6 is as close as possible to the bypass target coolant flow W0 * and the change in the total coolant flow WG is as small as possible.
  • the control device 11 not only the coolant flows for the respective time and - based on the respective time - known for the past, but also for a forecast horizon PH projected Nutz coolant flows, ie those coolant flows, for a number of future times to be delivered via the Nutz coolant outlets 4.
  • This is shown in FIG. 5 for the respectively resulting total coolant flows WG and a forecast horizon PH of (purely by way of example) four working cycles T.
  • the term "forecast horizon" is furthermore not meant in the sense of how far the control device 11 actually has a prognosis. It only depends on how far the control device 11 utilizes the prognosis in the course of determining the activation states Ci, CP for the valves 10 and the pump 7.
  • the forecast horizon PH may, for example, be in the range of 2 to 10 seconds. In general he should follow a strictly cyclical execution of the procedure of FIG. 2 correspond with several work cycles T.
  • control device 11 can determine the predicted useful coolant flows of at least one of the future points in determining the activation state C0 for the valve 10 controlling the bypass coolant outlet 6 and / or of the drive state CP of the pump 7.
  • the control device 11 can determine the predicted useful coolant flows of at least one of the future points in determining the activation state C0 for the valve 10 controlling the bypass coolant outlet 6 and / or of the drive state CP of the pump 7.
  • the coolant flows are subsequently provided with two indices.
  • the first index (i) is - as before - for the respective coolant outlet 4, 6.
  • the total coolant flows with the second index (j) are also Provided.
  • Wi2 are the respective coolant flows for the individual coolant outlets 4, 6, while WG2 denotes the associated total coolant flow.
  • control device 11 determines the associated total coolant flow WGj (with j> 0) for at least one future point in time and to take this total coolant flow WGj into account in determining the change in the total coolant flow ⁇ WG.
  • the corresponding total coolant flow WGj may in particular be the total coolant flow WG1 for the next point in time.
  • the control device 11 preferably also takes into account the total coolant flow WG 'of at least one past time in addition to the predicted useful coolant flows Wij of the at least one future point in time.
  • the respective time should be in the middle between the at least one future time and the at least one past time.
  • the total coolant flow WG 'for the past point in time may alternatively be a desired value or an actual value. This is in contrast to the other variable variables used in the present case, which are always setpoints.
  • FIG. 6 includes among others - analogous to FIG. 2 - Steps S6 to S10. These steps will therefore not be explained again below. However, the steps S1 to S5 are replaced by steps S11 to S15.
  • step S11 the controller 11 - analogous to step S1 - for a respective time for the Nutz coolant outlets 4 of the respective coolant flow Wi0 known.
  • step S12 the controller 11 determines the refrigerant flow W00.
  • the procedure can be adopted for each total coolant flow WGj, which was taken into account in a previous cycle in the course of determining the change ⁇ WG of the total coolant flow WG0 valid for the respective cycle.
  • the coolant flows W0j are adjusted for the bypass coolant outlet 6 so as to be able to keep the total coolant flow WGj utilized during the previous cycle constant.
  • step S12 the control device 11 determines the associated bypass coolant flow W0j for at least one operating cycle T for which the control device 11 knows the predicted useful coolant flows Wij.
  • step S13 the controller 11 forms the respective total coolant flows WGj by summing the corresponding coolant streams Wij.
  • step S14 the controller 11 determines the change ⁇ WG of the total refrigerant flow WG.
  • the difference to step S4 of FIG. 2 is that the control device 11 in step S14 uses the relationship given above in equation 6.
  • step S15 the controller 11 updates the total refrigerant flow WG 'for the previous cycle.
  • the difference to step S5 of FIG. 2 is that the controller 11 in step S15 does not use the total coolant flow WG0 of the current cycle, but the total coolant flow WG1, which it has utilized in the context of determining the change ⁇ WG of the total coolant flow WG0.
  • the control device 11 determines - see in FIG. 6 the step S13 - for the respective time and after this time lying future time points in each case the associated total coolant flow WGj.
  • FIG. 7 shows this for a prognosis horizon PH of four working cycles T.
  • this prognosis horizon PH is of course only exemplary.
  • the forecast horizon PH could also be larger or smaller.
  • the determined total coolant flows WGj are in FIG. 7 indicated by small crosses.
  • FIG. 7 also shows the respective sum of the useful coolant flows Wij. This determination is readily possible within the framework of the forecast horizon PH, since the control device 11 knows the useful coolant flows Wij.
  • the associated sums of the payload coolant streams Wij are in FIG. 7 indicated by small circles.
  • the control device 11 now further determines the associated changes in the total coolant flows WGj by forming the difference of directly consecutive total coolant flows WGj - for example, the total coolant flows WG1 and WG2. Then checks the controller 11 within the forecasting horizon PH, whether the determined changes the total coolant flows WGj each comply with a predetermined maximum change ⁇ max or not. If the total coolant flows WGj comply with the maximum change ⁇ max, the control device 11 retains the determined total coolant flows WGj. On the other hand, if the total coolant flows WGj do not comply with the maximum change ⁇ max, the control device 11 adapts the determined total coolant flows WGj in a forward-looking manner.
  • the associated modified total coolant flows WGj are in FIG. 7 represented by small rectangles.
  • the adaptation is carried out as far as possible in such a way that both the change ⁇ WG of the total coolant flow WG0 for the respective point in time and the changes in the determined total coolant flows WGj for the future points in time comply with the maximum change ⁇ max. This situation is in FIG. 7 shown.
  • control device 11 retains the useful coolant flows Wij specified for the various times as part of the adaptation and adapts only the bypass coolant flows W0j. If compliance with the maximum change ⁇ max can not be achieved with an adaptation of only the bypass coolant flows W0j, however, it is also necessary to adapt the useful coolant flows Wij.
  • a predictive predictive planning can take place. Not only can this, as in FIG. 7 shown to be required for an increase in the requested total coolant flows WGj, but also for a reduction of the requested total coolant flows WGj.
  • step S21 the control device 11 checks whether the activation states Ci of the valves 10 comply with minimum distances to a minimum activation of the respective valve 10 and a maximum activation of the respective valve 10. Further, in step S21, the controller 11 checks to what extent the drive state CP of the pump 7 has been changed. For example, in the context of step S21, the control device 11 may set an optimization problem with boundary conditions to be observed. Such optimization problems are well known to those skilled in the art.
  • step S21 When the controller 11 determines in step S21 that the drive states Ci of the valves 10 keep the minimum clearances and the drive state CP of the pump 7 is kept constant as much as possible, the controller 11 proceeds to step S10. Otherwise, the controller 11 proceeds to a step S22. In step S22, the control device 11 varies the applied working pressure pA in the sense of said optimization.
  • the pump 7 has an allowable operating range.
  • the operation of the pump 7 is as shown in FIG. 9 only permissible between a minimum rotational speed nmin and a maximum rotational speed nmax.
  • the required amount of coolant - ie the respective total coolant flow WG - must be between a minimum permissible coolant flow WGmin and a maximum permissible coolant flow WGmax.
  • the minimum permissible coolant flow WGmin and the maximum permissible coolant flow WGmax are in this case as shown in FIG FIG. 9 depends on the difference between the pump pressure pP and the suction pressure pS. Without further action, the pump 7 can therefore only within the in FIG. 9 unhatched area operated.
  • the pump 7 as shown in FIG. 10 it is possible for the pump 7 as shown in FIG. 10 to switch a short-circuit valve 14 in parallel. Depending on the activation of the short-circuit valve 14, this makes it possible to divert between 0% and 100% of the coolant flow conveyed by the pump 7 via the short-circuit valve 14 and to return it to the inlet side of the pump 7 or to the coolant reservoir 8. As a result, only the remaining, non-recirculated portion remains as the total coolant flow WG. Thus, it is not only possible, the entirety of pump 7 and short-circuit valve 14 not only within the in FIG. 9 operate unhatched area. This would also be possible without the short-circuit valve 14.
  • step S10 a corresponding activation of the short-circuit valve 14 by the control device 11 takes place in step S10.
  • a check whether the pump 7 can be operated in a permissible range for itself If this is the case, the short-circuit valve 14 remains (fully) closed. If this is not the case, the short-circuit valve 14 is opened as far as necessary to operate the pump 7 in a permissible range in itself.
  • the present invention is also applicable when the piping system 9 is made more complex.
  • the sum of the coolant flows flowing into the respective node and flowing out from the respective node must result in a total of 0 and at the respective node for each connected section of the pipeline system 9 the same pressure must be given.
  • the procedure is analogous to Kirchhoff's rules of electrical engineering. Although the procedure becomes more computationally complicated, the systematics remains unchanged.
  • the line system 9 has three sections 16a, 16b, 16c.
  • the portion 16a extends from a pump 7a to a node 15. It has the length La and the cross section Aa. From the node 15, the other two portions 16b, 16c extend to respective payload coolant outlets 4b, 4c and respective bypass coolant outlets 6b, 6c.
  • the section 16b is located just behind the node 15, a further pump 7b.
  • the section 16b has a length Lb and a cross section Ab. There is no pump in section 16c.
  • the section 16c has a length Lc and a cross section Ac.
  • the coolant outlets 4b, 4c and 6b, 6c are each preceded by valves 10b, 10c. In the FIG.
  • FIG. 11 shown configuration may occur, for example, in a cooling section, on the one hand an intensive cooling (coolant outlets 4b) and additionally a laminar cooling (coolant outlets 4c) and for each of the two cooling each bypass coolant outlet 6b, 6c.
  • the hot rolling stock 3 and the arrangement of the Nutz-Kühlstoffauslässe 4b, 4c in the cooling area 1 are in FIG. 11 not pictured with FIG. 11 not to overload.
  • Wic are the respective coolant flows
  • gic is the respective valve characteristic
  • pAc the working pressure prevailing on the input side of the valves 10c.
  • p 15 pAc + p 1 c WC + p 2 c ⁇ Wc p1c and p2c are defined analogously to functions p1 and p2, but refer to section 16c.
  • ⁇ Wc is the change of the total coolant flow Wc.
  • Wib are the respective coolant flows
  • gib is the respective valve characteristic
  • pAb the working pressure prevailing on the input side of the valves 10b.
  • pPB pab + p 1 b wb + p 2 b ⁇ Wb p1b and p2b are defined analogously to functions p1 and p2, but with reference to section 16b.
  • ⁇ Wb is the change of the total coolant flow Wb.
  • CPb CPb wb .
  • pPB - p 15 the required drive state CPb of the pump 7b can be determined.
  • the working pressures pAb and pAc are target values of the system, which are given or possibly also by the Control device 11 can be determined.
  • the total coolant flows Wb, Wc are known.
  • For the determination of the changes ⁇ Wb, ⁇ Wc (and consequently also the change ⁇ Wa) can be made to the above statements in connection with the FIG. 2 and 6 to get expelled.
  • the equation system is thus clearly solvable.
  • the present invention has many advantages.
  • the required coolant flows Wi, WG are provided with high accuracy without requiring a water tank or other compensatory measures.
  • the working pressure pA can be selected as needed and even adjusted during operation of the cooling section.
  • the operating range of the cooling section will be expanded.
  • both the suction pressure pS and the pump pressure pP can be varied as needed. This applies both to pure laminar cooling and to pure intensive cooling as well as to a cooling section which comprises both laminar cooling and intensive cooling. Due to the adaptation of the working pressure pA and the pump pressure pP considerable energy can be saved. In a hot strip mill, the average energy consumption required to pump the coolant 2 can thereby be reduced by at least 30% over the prior art solutions, in some cases even by up to 50%.
  • the associated cost savings can range well beyond € 100,000 a year. Furthermore, the process is extremely flexible. Within a few seconds, the total coolant flow WG can be increased from a minimum value to a maximum value or, conversely, reduced from the maximum value to the minimum value without the accuracy of the cooling suffers.

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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)
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  • Air Conditioning Control Device (AREA)
EP17206426.3A 2017-12-11 2017-12-11 Commande améliorée de la gestion de l'eau d'un circuit de refroidissement Active EP3495056B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP17206426.3A EP3495056B1 (fr) 2017-12-11 2017-12-11 Commande améliorée de la gestion de l'eau d'un circuit de refroidissement
US16/771,500 US11135631B2 (en) 2017-12-11 2018-11-16 Control of the water economy of a cooling path
EP18800210.9A EP3723919A1 (fr) 2017-12-11 2018-11-16 Régulation améliorée de la gestion de l'eau d'une zone de refroidissement
CN201880079935.XA CN111432950B (zh) 2017-12-11 2018-11-16 冷却段的水资源管理的改善式控制
PCT/EP2018/081500 WO2019115145A1 (fr) 2017-12-11 2018-11-16 Régulation améliorée de la gestion de l'eau d'une zone de refroidissement

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EP17206426.3A EP3495056B1 (fr) 2017-12-11 2017-12-11 Commande améliorée de la gestion de l'eau d'un circuit de refroidissement

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022208447A1 (de) 2022-08-15 2024-02-15 Sms Group Gmbh Verfahren, Computerprogramm und Kühlsystem zum Überwachen einer Komponente des Kühlsystems in einem Walzwerk

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3896286A1 (fr) 2020-04-14 2021-10-20 Primetals Technologies Germany GmbH Fonctionnement d'une pompe d'un dispositif de refroidissement sans l'utilisation d'un champ caractéristique multidimensionnel mesuré
EP3895819B1 (fr) 2020-04-14 2023-06-07 Primetals Technologies Germany GmbH Fonctionnement d'un dispositif de refrodissement avec une pression de fonctionnement minimale
DE102021001967A1 (de) 2021-04-15 2022-10-20 Primetals Technologies Germany Gmbh Druckstoßfreies Aus- und Einkoppeln von Pumpen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524933A (en) * 1978-08-08 1980-02-22 Nippon Steel Corp Rapid quenching apparatus for high-temperature steel being transported
JPH04167916A (ja) * 1990-10-30 1992-06-16 Sumitomo Metal Ind Ltd スプレー用給水圧力制御装置
WO2013143925A1 (fr) 2012-03-28 2013-10-03 Siemens Aktiengesellschaft Commande d'un système de refroidissement
WO2014032838A1 (fr) 2012-09-03 2014-03-06 Sms Siemag Ag Procédé et dispositif d'alimentation dynamique d'un appareil de refroidissement destiné à refroidir une bande métallique ou un autre produit laminé au moyen d'un réfrigérant
WO2014124867A1 (fr) 2013-02-14 2014-08-21 Siemens Vai Metals Technologies Gmbh Refroidissement d'une bande métallique au moyen d'un système de vanne à réglage de position
WO2014124868A1 (fr) * 2013-02-15 2014-08-21 Siemens Vai Metals Technologies Gmbh Section de refroidissement avec refroidissement intensif et refroidissement laminaire

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE348671T1 (de) * 2003-02-25 2007-01-15 Siemens Ag Verfahren zur regelung der temperatur eines metallbandes, insbesondere in einer kühlstrecke
CN204685675U (zh) * 2015-05-27 2015-10-07 鞍钢股份有限公司 一种热轧板带气雾冷却装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524933A (en) * 1978-08-08 1980-02-22 Nippon Steel Corp Rapid quenching apparatus for high-temperature steel being transported
JPH04167916A (ja) * 1990-10-30 1992-06-16 Sumitomo Metal Ind Ltd スプレー用給水圧力制御装置
WO2013143925A1 (fr) 2012-03-28 2013-10-03 Siemens Aktiengesellschaft Commande d'un système de refroidissement
WO2014032838A1 (fr) 2012-09-03 2014-03-06 Sms Siemag Ag Procédé et dispositif d'alimentation dynamique d'un appareil de refroidissement destiné à refroidir une bande métallique ou un autre produit laminé au moyen d'un réfrigérant
WO2014124867A1 (fr) 2013-02-14 2014-08-21 Siemens Vai Metals Technologies Gmbh Refroidissement d'une bande métallique au moyen d'un système de vanne à réglage de position
WO2014124868A1 (fr) * 2013-02-15 2014-08-21 Siemens Vai Metals Technologies Gmbh Section de refroidissement avec refroidissement intensif et refroidissement laminaire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022208447A1 (de) 2022-08-15 2024-02-15 Sms Group Gmbh Verfahren, Computerprogramm und Kühlsystem zum Überwachen einer Komponente des Kühlsystems in einem Walzwerk
WO2024037827A1 (fr) 2022-08-15 2024-02-22 Sms Group Gmbh Procédé, programme informatique et système de refroidissement pour surveiller un composant du système de refroidissement dans un laminoir

Also Published As

Publication number Publication date
US11135631B2 (en) 2021-10-05
EP3723919A1 (fr) 2020-10-21
CN111432950A (zh) 2020-07-17
EP3495056B1 (fr) 2020-09-16
WO2019115145A1 (fr) 2019-06-20
CN111432950B (zh) 2022-04-26
US20200376527A1 (en) 2020-12-03

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