EP2817425A1 - Commande d'un système de refroidissement - Google Patents

Commande d'un système de refroidissement

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Publication number
EP2817425A1
EP2817425A1 EP13714569.4A EP13714569A EP2817425A1 EP 2817425 A1 EP2817425 A1 EP 2817425A1 EP 13714569 A EP13714569 A EP 13714569A EP 2817425 A1 EP2817425 A1 EP 2817425A1
Authority
EP
European Patent Office
Prior art keywords
pump
coolant
actuator
pressure
determined
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
EP13714569.4A
Other languages
German (de)
English (en)
Other versions
EP2817425B1 (fr
Inventor
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
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 Siemens AG filed Critical Siemens AG
Priority to EP13714569.4A priority Critical patent/EP2817425B1/fr
Publication of EP2817425A1 publication Critical patent/EP2817425A1/fr
Application granted granted Critical
Publication of EP2817425B1 publication Critical patent/EP2817425B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • C21D9/5735—Details
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a process for Steue ⁇ tion of cooling a material with a cooling medium, a computer program product for performing such procedural ⁇ Rens, a control device for controlling a cooling of a material with a coolant, and a cooling path of a rolling plant comprising such a Steuerungseinrich ⁇ tion.
  • DD 213 853 AI describes a control device for controlling a water supply in a water cooling section, which is operated to cool a rolling stock.
  • Pressure of the cooling water is adjusted by an adjustment of pressure control valves. In the process, it is constantly checked whether an impermissible deviation of measured actual pressure values from desired pressure values exists and, if appropriate, a regulation of the pressure values is carried out.
  • the object is achieved by a method for controlling a cooling of a material with a coolant, wherein a supply of the coolant to the material is controlled by at least one actuator, which is adjustable in two or more different ⁇ different positions, wherein the actuator is an actuator Characteristic field is assigned, which indicates a relationship between a coolant flow, a pressure of the coolant and a position of the actuator, wherein at least one coolant pump, which is seen in the flow direction of the coolant arranged in front of the at least one actuator assigned, a pump characteristic field, wel ⁇ ches indicating a relationship between a rotational speed of the pump, a pressure difference of the refrigerant that exists between a suction pressure at an input side of the pump and an output pressure at an output side of the pump, and a coolant Ström, and wherein a cooling medium flow is adjusted by the D jerk difference is determined from the pump characteristic field to the determined pressure difference
  • a computer program product for controlling the cooling of a material with a coolant, wherein a supply of the coolant to the material is controlled by at least one actuator which is adjustable in two or more different positions, wherein the actuator is an actuator characteristic field is assigned, which indicates a relationship between a coolant flow, a pressure of the coolant and a position of the actuator, wherein at least one coolant pump, which is arranged in the flow direction ofmémit ⁇ see before the at least one actuator, a pump characteristic field is assigned, which a relationship between a rotational speed of the pump, a pressure differential of the coolant, which prevails at an input side of the pump and an output pressure at an output side of the pump between a suction pressure and outputs a refrigerant stream at ⁇ , and wherein the computer program product, when e s performed by a computing unit, performs the following process steps: determining a corresponding to a pressure difference of the coolant between the input side and the output ⁇ side of the pump and a desired cool
  • a control device for controlling a cooling of a material with a cooling medium comprising at least one storage unit which stores for storing an actuator characteristic curve field, the at least one Bezie ⁇ hung between a coolant flow, a pressure of the refrigerant and a position one of the actuator Characteristic field assigned actuator for controlling the Zu ⁇ drove of the coolant to the material indicates, and for Spei ⁇ tion of a pump characteristic field, the relationship zwi ⁇ tween a speed of the pump, a pressure difference of the coolant between a suction pressure at an input side of the Pump and an output pressure at an output side of the pump prevails, and indicates a coolant flow, is formed ⁇ , a processor unit, which is adapted to the stored actuator characteristic field, the corresponding to a determined pressure value of the coolant and a desired coolant flow position of the at least ei ⁇ nen actuator and from the stored pump characteristic field corresponding to a determined pressure difference of the coolant between the input side and
  • wel ⁇ che is adapted to send a signal for setting the min ⁇ least one actuator in the determined position to an actuating unit and a signal for adjusting the at least one coolant pump to the determined speed to send a speed controller.
  • a common coolant is water, especially for the kuh ⁇ treatment of a material such as metal.
  • the terms "current” and “the river” are used synonymously: describe a per unit time given by a cross-sectional area toward ⁇ by passing amount of refrigerant.
  • the cooling in the form of a water jet cooling often as
  • a water-jet cooling is a cooling of the material with one or more What ⁇ serstrahlen.
  • the intensive cooling can be considered as a special case of laminar cooling.
  • a high water requirement at a water pressure greater than 1 bar is characteristic.
  • the water requirement of the intensive cooling can not be covered from a pure water tank, so that the operation of the intensive cooling - in the case of water as a coolant - coupled with a water pump of the water industry.
  • the valves of the intensive cooling are preferably continu ously ⁇ adjustable thereby, that the amounts of water are continuously variable to enable a precise dosing of the cooling performance.
  • no flow control loops are constructed, but the actuators of a coolant run directly attached ⁇ controls. Furthermore, no pressure control loop is established for the amount of coolant to be supplied to the cooling.
  • the vorlie ⁇ ing invention is based on the finding that a high setting speed of a required coolant ⁇ flow, z. B. a cooling water flow in a cooling line, can only be achieved by a controller, whereas a conventional control is too slow and too susceptible to failure, especially under the conditions of intensive cooling.
  • This characteristic field is either already known or will ⁇ determined least once by "gauging" of the actuator. By “gauging” is an experimental determination of the flow through the actuator understood as a function of the position of the valve and the pressure of the coolant. To calibrate the actuator characteristic field f (w, p) flow measurements can be made.
  • a process computer controls the actuators using the associated characteristic fields such that the required coolant flow flows through each actuator.
  • the actual pressure p is detected, each used a ⁇ the actuator in the characteristics field and each target coolant flow w to a corresponding desired actuator position k tobil- det.
  • the target pressure is used instead of the actual pressure in the characteristic field.
  • Actuators can be moved in 2 s from 0% to 100% of their opening degree and in 1 s from 20% to 80% of their opening degree, and moreover, the pump can be brought from standstill to the maximum speed in less than 1 s. Because ⁇ by a rapid adjustment of the coolant flow in each coolant inlet to the material and even faster adjustment of the coolant flow to supply the intensive cooling is possible, even if the coolant to the intensive cooling only over a long supply line, z. B. over a length in the range of 100 to 200 m, zoom must be transported. With the present invention, it is possible to have a large
  • Coolant amount, as z. B. in an intensive cooling of a cooling line of a rolling mill is required, for example ei ⁇ ne cooling water amount of about 150 m 3 of water, accelerate sufficiently fast to cope with the entry of the material to be cooled, for.
  • ei ⁇ ne cooling water amount of about 150 m 3 of water
  • z. B. on a time scale of alternatingrwei ⁇ se 1 s to build a stable coolant flow.
  • Even with thin metal strips, which are transported through the cooling line at a speed of approx. 10 m / s the length of insufficiently cooled material remains smaller than 10 m. For a laminar flow cooling line, this value is of the same order of magnitude. Cooling with the control of actuators according to the invention thus has the following advantages:
  • the required coolant flow can be exactly at the desired time, for. B. upon entry of a strip of material in the cooling line, are provided. Conversely, the cooling ⁇ medium current correspondingly quickly exactly at the desired time ⁇ point, z. B. at the outlet of a strip of material from the cooling ⁇ street, can be reduced.
  • the intensive cooling can be omitted. This can also be dispensed with a sufficiently long, straight calming section, which in the case of a flow measurement in addition to a
  • Measuring device is required and the cooling system additionally expensive.
  • the invention allows cooling with a high efficiency. All of the coolant which transports, in particular ⁇ sondere is pumped, is used to cool, especially for In ⁇ tensivkühlung used. In this case, the energy consumption of the pump can be further reduced by the fact that a higher pressure of the coolant is only generated when it is actually required.
  • the need for a high-pressure operation can z. B. be found that one positions of actuators, z. B. flap positions of valves, determined and raises the target pressure for the pump only when the position of at least one actuator would exceed a bestimm ⁇ te, predetermined as a limit opening position.
  • the invention is an essential component of a plant that allows a combined, flexible cooling operation, by the normal production, for. B. in a steel mill, is not disturbed or impaired.
  • the at least one actuator is adjusted continuously in the determined position.
  • the at least one actuator to a continuously ADJUSTABLE ⁇ res actuator.
  • a continuous adjustment or adjustability of the at least one actuator means that the at least one actuator is continuously adjusted in the determined position.
  • the continuously variable actuator it may, for. B. act to a valve or a rule ⁇ flap.
  • a control method using continuously variable actuators is not significantly more expensive than the usual equipment of cooling sections with simple switching elements. valves.
  • a high tank decouples the control of the water management from the control of the valves of the valves.
  • Such control prevents the switching jumps occurring in Wegventi ⁇ len in temperature and is DA forth particularly suitable for a model predictive control of the temporal Abkühlverlaufs in the cooling section.
  • a third pump identification ⁇ line field ⁇ s (n, m) is assigned to which the pressure ⁇ difference ⁇ of the refrigerant between the suction pressure at the input side of the pump and the output pressure prevails at the off ⁇ output side of the pump, as a function of the pump rotational ⁇ s n number and the coolant flow w indicates.
  • the coolant pump z.
  • a Pumpenenkennli- nienfeld n q (w, pp suction ) can be assigned.
  • n denotes the target pump speed
  • w the coolant flow to be conveyed
  • p the pressure at the outlet side of the pump
  • Psaug the suction pressure on the input side of the pump.
  • w must be the sum of the coolant flows of all the actuators of the cooling, plus any further existing customers who receive coolant from the cooling pump.
  • the pump is controlled by a process computer so that it runs at a speed n, which emerges at the onset of the desired coolant flow w and a target pressure increase pp sa ug in the Pum ⁇ pen characteristic field.
  • the suction pressure is advantageously measured on the input side of the pump.
  • an estimate may be used, eg. B. calculated from the height difference between the location of the pump and the coolant level in a coolant tank, with which the suction side of the pump is supplied.
  • a target value of another control means may be used which lie ⁇ fert the pump, the coolant on the suction side.
  • a control device not only the actuators, but also the pumps, for. B. for the high tank, controls because the control device, the coolant flows to be provided are already known in advance.
  • This can be provided in the form of a so-called intelligent coolant management:
  • the entire water management übergrei ⁇ fend and "knows" all water consumers in the system, ie takes into account their water consumption on the basis of previously collected and / or current fuel consumption
  • the controller controls in particular the intensive cooling.
  • the pump is preferably driven by an inverter frequenzgere ⁇ gel.
  • the characteristic field of the pump is either previously known or is determined at least once by Auslitern the pump.
  • the position of the at least one actuator and the speed for operating the at least ei ⁇ nen coolant pump in one step as a common Setpoint value is determined, wherein the pressure of the coolant upstream of the at least one actuator is identical to the output pressure ⁇ out on the output side of the pump.
  • suction pressure of the refrigerant at the input side of the pump is determined by a measurement or an estimation.
  • the actuator performance curve is adapted by detecting the pressure of the coolant, in particular ⁇ sondere measured is the position of the actuator is ermit ⁇ telt, out of the actuator characteristic curve field of the ER-mediated values, ie pressure and position , Corresponding coolant flow is determined, the coolant flow determined from the actuator characteristic field is compared with a measured coolant flow and the actuator characteristic field is changed such that the coolant flow determined from the actuator characteristic field coincides with the measured coolant flow.
  • the usual disadvantage of a control that the set coolant amounts are more inaccurate than in a control, can be compensated by an adaptation of the actuator characteristic field using the factors C j .
  • the recognition functions are local, e.g. As if they are B-splines, which are different only in an environment around the development ⁇ point of zero, converges the adaptation loading Sonder quickly because of characteristics then is improved only in the vicinity of the current measurement and places the performance curves, which are farther away from the current measurement, not changed, in particular not deteriorated.
  • the characteristic field it is still necessary to check during or after the adaptation, the characteristic field, whether it is still strictly monotonically increasing. This can z. B. occur when inaccurate readings are detected or the anflind ⁇ Liche characteristic field is very inaccurate and the adaptation must make major corrections. Is the characteristic curve field according to Adap ⁇ tion not strictly increasing, the adjustment of each ⁇ pertaining factor C j is to reduce or reverse.
  • the pressure p of the refrigerant and the coolant flow W of the coolant are ermit ⁇ telt, in particular measured, to the determined values, ie pressure and coolant flow corresponding position of the actuator is determined from the actuator operation characteristic field, the position determined from the actuator-characteristics field of the actuator compared with a measured position of the actuator and the actuator characteristic field changed so that the determined from the actuator characteristic field position of the actuator coincides with the measured position of the actuator.
  • the process computer can determine the required position k of the actuator from the pressure p and the
  • the pump characteristic field is adapted by the pressure difference and the flow of the coolant are determined, from the Pum ⁇ pen characteristic field corresponding to the determined values pump speed is determined, with the determined from the pump characteristic curve pump speed A measured pump speed is compared and the pump characteristic field is changed so that the results from the pump characteristic field average pump speed coincides with the measured pump speed.
  • n q (w, pp suction )
  • q (w, pp suction ) £ j b j q j (w, p psaug)
  • the gain factors b suitable to each ⁇ wells corresponding basis functions q (w, pp suction) can be selected.
  • control device comprises the at least one actuator, which is preferably ⁇ formed as a valve or a control valve.
  • a further preferred development of the invention is a cooling section of a rolling mill, comprising an above-described ne control device for controlling the cooling of a material in the cooling section.
  • the cooling section comprises an intensive cooling section and / or a laminar cooling section.
  • the present invention can be used both for an intensive cooling section and for a laminar cooling section.
  • the invention is not limited to intensive cooling. You can also have a zone of a normal one
  • the invention can also be carried out when the variable-speed pump is supplied directly from a coolant supply ⁇ network with coolant, z. B. is supplied directly from the water supply network with water, ie without ei ⁇ nen arranged between them and acting as a buffer
  • Cooling section be particularly useful to inhibit grain growth in a material material to accelerate the phase transformation of a material, and thereby increase the overall strength of the material.
  • intensive cooling but also be useful behind the roughing or be installed at other locations of the cooling section.
  • intensive cooling beams between stands of the finishing train.
  • a strip cooling system for a hot rolling mill and a Vorband- a finished strip cooling can include best ⁇ starting from an intensive and laminar.
  • the pre-strip cooling can be installed behind a roughing stand in the area of the intermediate roller table. It provides temperature compensation over the entire length and width of the sliver before it arrives on the finishing train.
  • On Off ⁇ transition of the finishing train an intensive cooling section angeord- net can be.
  • a laminar cooling section can be positioned. Usually both systems are operated together.
  • the invention thus circumvents the very unfavorable solution that requires the removal of large pipes at each change of the amount of cooling water, such as a change from a high pressure operation to ei ⁇ nem low pressure operation by switching off booster pumps and activating a supply from a water tank for low pressure operation.
  • Such solutions can only z. B. are switched during a roll change or another longer downtime, but not during the lau ⁇ fenden production.
  • a tape in the intensive cooling may have a cooling water amount in the range of
  • the intensive cooling can usually are activated in thedestre ⁇ bridge not already before the arrival of the band because of thinner strips, the forces acting on what ⁇ ser on the tape may lead to a high-flying of the tape.
  • thicker tapes often require a warmer tape on the first tapes so that the reel can grip the tape and bend around the mandrel. This means that especially at the belt inlet and the belt outlet large amounts of water must be changed very dynamically.
  • the present invention provides just this dynamic.
  • the present invention makes it possible to accurately meter the large amounts of water used in intensive cooling.
  • the accuracy of the amount of water with which the inten- is applied sivksselung is crucial for the exact ⁇ accuracy of coiling temperature that can be achieved. This is particularly important in order to avoid the disadvantage of a poor reproducibility of the material properties, the advantage of high cooling rates, the increase in strength.
  • the accuracy of the coolant flow achievable with the invention degradation of reel temperature accuracy over standard laminar cooling can be avoided by operating the intensive cooling at low cooling power to produce standard products.
  • the invention also avoids a significant deterioration of the reel temperature accuracy when operating at high cooling capacities.
  • the present invention provides an application of a control method of coolant actuators according to a family of characteristics and preferably in addition a cooling ⁇ medium pump according to a family of characteristics on a cooling section of a metal processing line, in particular in a hot ⁇ bandtechnik, the invention can but in particular a heavy plate mill in which thick sheets are produced and must be cooled.
  • FIG. 1 is a metal processing line;
  • FIG. 2 shows a first actuator characteristic field;
  • FIG. 3 shows a second actuator characteristic field;
  • FIG. 4 shows a first pump characteristic field;
  • FIG. 6 is a diagram of a control of a coolant flow.
  • Fig. 1 shows a metalworking line 1, which here as a cooling line 2, also referred to as a cooling section, is madebil ⁇ det.
  • the cooling line 2 is a production line nachge ⁇ switches, the last rolling mill is indicated at 3.
  • a material 4, which is designed here as a to be processed metal 4 in ribbon form, first passes through the manufacturing ⁇ road and thereafter the cooling section 2, whereupon it to Ab ⁇ transport or for buffering up to a further processing on a reel 5, which the Cooling section 2 nachge ⁇ switches, is wound.
  • the metalworking line 1 can z. B. be arranged in a hot strip ⁇ factory of a steel plant.
  • the cooling section 2 comprises actuators 6, with which a defined coolant flow can be delivered to the material 4, a coolant inlet 13, through which coolant from a coolant reservoir, for.
  • actuators 6 As a water supply network or a high tank, are supplied to the actuators 6 can, and a switched into the coolant inlet 13 ⁇ coolant pump 20, with which the pressure of the coolant on ei ⁇ ner output side 20a of the pump 20 against a pressure of the coolant at an input side 20e of the pump 20 can be changed.
  • the actuators include 6 flaps and valves with which serving as a coolant water via cooling bars 14 on the band-shaped metal 4 can be applied, for. B. aufspritzbar, is to cool it.
  • Actuators 6 include. All actuators can be supplied with coolant via the same pump. It is also possible that there are two or more pumps, each supplying one or more actuators with coolant.
  • the cooling section 2 further comprises a control device 7, which is indicated schematically in Fig. 1.
  • the control ⁇ device 7 comprises a processing unit 8, a standardized Speicherein- 12, an input device 9 for inputting data into the calculating unit 8 and a display device 10 to show ⁇ data.
  • the arithmetic unit 8 controls via Steuerlei ⁇ lines 15, the actuators 6, z. As valves, nozzles or flaps, according to an actuator characteristic field llw.
  • the arithmetic unit 8 controls the cooling ⁇ medium pump 20 via control lines 15 according to a pump characteristic field LLN.
  • the actuators 6 are individually controlled and thus the flow rates of the chilled beam 14 separately regulated.
  • a high tank feeds the cooling bars 14 with coolant, in particular with water, via the coolant inlet 13.
  • the pump 20 can be switched on. In this way, the cooling of the respective produced material, for. As the steel grade, adapt.
  • control device 7 in a manual operating mode at least partially via the input Device 9 can be changed by an operator, so that z. B. the actuators 6 can be controlled in groups or separately.
  • the manual controllability does not have to be permanently provided, it is just as conceivable that it is possible to switch between an automatic operating mode and a manual operating mode.
  • the arithmetic unit 8 receives further information about the state of the cooling section 2 or of the metal 4.
  • the metal 4 and its state at Entering into the cooling section 2 describe, z.
  • one or more actuator characteristic fields llw and one or more pump characteristic fields lln are stored.
  • one of the stored characteristic fields is assigned to the respective component.
  • two or more actuators or pumps of the same type are assigned the same characteristic field; This achieves faster convergence in the cooling system, and cooling control can be faster.
  • each actuator 6 and each pump 20 own characteristic field llw or lln is assigned.
  • Actuator 10 percent, at k 90%, the opening degree of the actuator is 90 percent.
  • the actuator characteristics map 11k may be stored in a memory unit of a controller.
  • a signal unit of a control device sends a signal for setting the at least one actuator in the determined position k to an actuating unit which serves to set the actuator.
  • the parameter curves w define the mutual dependence between the coolant pressure p and the position ki of an actuator for different coolant flows w.
  • the second actuator characteristic field llw is used to determine a position ki of an actuator 6, in which under a desired coolant flow pi, the desired coolant flow wi, S0 n results.
  • the procedure is as follows: First, the pressure pi of the coolant, as seen in the flow direction of the coolant between the coolant pump 20 and the actuator 6, is determined. This ⁇ He mediation can be done by a pressure measurement or an estimate. From the actuator 6 associated actuator operation characteristic curves llw then is the determined pressure value to the pi and the target coolant flow wi, S o determined ii corres ⁇ ki-Chief position of the actuator. 6 Finally, the relevant actuator 6 is set in the determined position ki.
  • the z. B. is determined by a flow measurement of the coolant flow, and according to the actuator characteristic field llw erwar ⁇ teten coolant flow wi, S o ii a difference occurs, which is above an allowable tolerance value, is preferably an adaptation of the actuator characteristic field llw who did ⁇ actual relations carried out.
  • n q (w,
  • the parameter curves n define the mutual dependence between the coolant pressure difference ⁇ and the coolant flow w for different rotational speeds n of the coolant pump 20.
  • the pump characteristic field 12n is used to determine a rotational speed ni at which a desired coolant flow, the desired coolant flow wi, S0 n, results under a predetermined coolant pressure difference ⁇ .
  • Cooling section 2 Figure 1 shown is to the following pre- ⁇ addressed: first, the suction pressure p sa micrograms of the coolant, that the coolant pressure at the input side 20e of the pump 20 is determined, and from this calculates the target pressure difference ⁇ ⁇ ⁇ be ⁇ . Subsequently, the pump rotational speed ni is determined from the pump characteristics map 12n to the calculated desired pressure difference ⁇ ⁇ ⁇ and to a desired coolant flow wi, S oii. Finally, the speed of the pump 20 is set to the determined value ni.
  • the z. B. is determined by a flow measurement of the coolant flow, and according to the pump characteristic field 12n expected coolant flow wi, S oii a difference occurs, which is about ei ⁇ nem allowable tolerance value, is preferably an adaptation of the pump characteristic field 12n to actual conditions performed.
  • the amplification factors b are suitably selected to the respective associated approach functions q (w, pp suction ) by determining the output pressure p of the coolant at the output side 20a of the pump, in particular measured.
  • the parameter curves w define the mutual dependence between the coolant ⁇ pressure difference ⁇ and the rotational speed n for different volume flows w of the coolant.
  • Fig. 6 shows a schematic representation of the control of the coolant flow to a material to be cooled 4.
  • egg ⁇ nem coolant inlet 13, z. B. in the form of a pipe, a pump 20 and subsequently a valve 6 are arranged in the flow direction of the coolant.
  • the coolant In the flow direction of the cooling ⁇ seen in front of the pump 20, that is, on the input side 20 e of the pump 20, the coolant has a pressure which is referred to as the suction pressure p sa ug.
  • the coolant In the flow direction of the coolant Seen after the pump 20, ie at the output side 20a of the pump 20, the coolant has a pressure simply referred to as p, which results from the suction pressure p sa ug via the pressure change generated by the pump 20.
  • the operation of the pump 20, in particular n its speed is controlled with the help of the pump ⁇ characteristic field 12n.
  • the flow through ⁇ degree of the valve 6, which is seen in the flow direction of the coolant located downstream of the pump 20 is controlled using the control element characteristic field 11k.
  • the coolant flow wi of the coolant to the material 4 can thus be accurately controlled by the pump 20 and the valve 6.
  • the coolant flow w ⁇ can not be determined, in particular measured, an adaptation with respect to the temperature of the material to be cooled, for. B. a metal part, take place. As a result, an error of the coolant flow w can be compensated for or eliminated. If the temperature model is sufficiently well-known, a certain coolant flow w ⁇ can be used to conclude a cooling by a certain temperature difference.

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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)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

L'invention concerne un procédé destiné à commander un système permettant de refroidir un matériau (4) au moyen d'un réfrigérant, un dispositif (13) destiné à alimenter le matériau (4) en réfrigérant étant commandé par au moins un organe de réglage (6) qui peut adopter deux ou plusieurs positions (k) différentes, une association étant établie entre l'organe de réglage (6) et un champ de caractéristiques d'organe de réglage (11k) lequel indique une relation entre un débit de réfrigérant (w), une pression (p) du réfrigérant et une position (k) de l'organe de réglage (6), et un débit de réfrigérant (wi) étant ajusté en déterminant la pression (pi) du réfrigérant en amont de l'au moins un organe de commande (6) lorsqu'on regarde dans le sens d'écoulement dudit réfrigérant, en déterminant à partir du champ de caractéristiques d'organe de réglage (11k) la position (ki) laquelle correspond à la valeur de pression (pi) déterminée et à une valeur de consigne en termes de débit de réfrigérant, et en amenant l'organe de réglage (6) dans la position (ki) déterminée.
EP13714569.4A 2012-03-28 2013-03-20 Commande de refroidissement Active EP2817425B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13714569.4A EP2817425B1 (fr) 2012-03-28 2013-03-20 Commande de refroidissement

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EP12161804.5A EP2644719A1 (fr) 2012-03-28 2012-03-28 Commande de refroidissement
EP13714569.4A EP2817425B1 (fr) 2012-03-28 2013-03-20 Commande de refroidissement
PCT/EP2013/055753 WO2013143925A1 (fr) 2012-03-28 2013-03-20 Commande d'un système de refroidissement

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EP2817425A1 true EP2817425A1 (fr) 2014-12-31
EP2817425B1 EP2817425B1 (fr) 2016-05-18

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CN104747461B (zh) * 2015-01-07 2017-01-18 马钢(集团)控股有限公司 一种型钢穿水冷却高压变频水泵的控制系统
EP3495056B1 (fr) * 2017-12-11 2020-09-16 Primetals Technologies Austria GmbH Commande améliorée de la gestion de l'eau d'un circuit de refroidissement
DE102018219276A1 (de) 2018-03-12 2019-09-12 Sms Group Gmbh Kühlgruppe einer Laminarkühlvorrichtung
DE102018208126A1 (de) * 2018-05-23 2019-11-28 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Verfahren zum Hantieren eines Werkstücks mit Hilfe eines Entnahmewerkzeugs und Maschine zur Durchführung des Verfahrens
EP3895819B1 (fr) 2020-04-14 2023-06-07 Primetals Technologies Germany GmbH Fonctionnement d'un dispositif de refrodissement avec une pression de fonctionnement minimale
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
DE102020205252A1 (de) * 2020-04-24 2021-10-28 Kocks Technik Gmbh & Co Kg Vorrichtung zum Kühlen von Langprodukten und Verfahren zum Kühlen eines Langproduktes unter Verwendung derselben
DE102021001967A1 (de) 2021-04-15 2022-10-20 Primetals Technologies Germany Gmbh Druckstoßfreies Aus- und Einkoppeln von Pumpen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589160A (en) * 1968-06-07 1971-06-29 Bethlehem Steel Corp Apparatus and method for controlling accelerated cooling of hot rolled strip material
DD213853A1 (de) 1983-02-28 1984-09-26 Thaelmann Schwermaschbau Veb Regeleinrichtung der wasserzufuhr in wasserkuehlstrecken
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
JP3373007B2 (ja) * 1993-10-14 2003-02-04 新日本製鐵株式会社 ノズル異常検知装置
DE19917725B4 (de) * 1999-04-20 2005-02-24 Sms Demag Ag Kühlverfahren für Walzgut und Kühlbett
DE10137596A1 (de) 2001-08-01 2003-02-13 Sms Demag Ag Verfahren zur Kühlung von Werkstücken, insbesondere von Profilwalzprodukten, aus Schienenstählen
JP4715534B2 (ja) * 2006-02-06 2011-07-06 住友金属工業株式会社 鋼材の冷却装置、冷却方法、製造方法、及び、冷却能力診断方法
DE102007046279A1 (de) * 2007-09-27 2009-04-09 Siemens Ag Betriebsverfahren für eine Kühlstrecke mit zentralisierter Erfassung von Ventilcharakteristiken und hiermit korrespondierende Gegenstände
EP2108465A1 (fr) * 2008-04-07 2009-10-14 Siemens VAI Metals Technologies Ltd. Procédé et appareil pour le refroidissement contrôlé
KR101259266B1 (ko) * 2010-12-01 2013-05-07 주식회사 포스코 가속 냉각 장치 및 이의 유량 제어 방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013143925A1 *

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Publication number Publication date
CN104334754A (zh) 2015-02-04
CN104334754B (zh) 2016-09-07
EP2644719A1 (fr) 2013-10-02
WO2013143925A1 (fr) 2013-10-03
EP2817425B1 (fr) 2016-05-18

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