EP3972737B1 - Method for monitoring a high-pressure roller grinder - Google Patents
Method for monitoring a high-pressure roller grinder Download PDFInfo
- Publication number
- EP3972737B1 EP3972737B1 EP21730515.0A EP21730515A EP3972737B1 EP 3972737 B1 EP3972737 B1 EP 3972737B1 EP 21730515 A EP21730515 A EP 21730515A EP 3972737 B1 EP3972737 B1 EP 3972737B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- press
- computer
- data
- analysis
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 26
- 238000012544 monitoring process Methods 0.000 title claims description 25
- 238000004458 analytical method Methods 0.000 claims description 55
- 239000000463 material Substances 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 15
- 238000005070 sampling Methods 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 1
- 238000011156 evaluation Methods 0.000 description 13
- 238000012423 maintenance Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010972 statistical evaluation Methods 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- -1 B. ore Substances 0.000 description 1
- 241000876466 Varanus bengalensis Species 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002347 wear-protection layer Substances 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0094—Press load monitoring means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/005—Control arrangements
- B30B11/006—Control arrangements for roller presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0005—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
- B30B3/04—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
Definitions
- Such a high-pressure roller press for the comminution of material is also referred to as a high-pressure roller mill.
- the invention also relates to high-pressure roller presses for compacting or briquetting material.
- the material is in particular highly abrasive material, e.g. B. ore, cement clinker, slag or ceramic base materials.
- the roller press can also be used for compacting e.g. B. fertilizers are used.
- One of the press rollers is preferably designed as a fixed roller and is consequently rotatably mounted in a stationary manner in a press frame. At least one press roller is designed as a loose roller, ie it is connected via force generating means, e.g. B.
- each press roll has z. B. a rotatingly driven roller core and a bandage attached to the roller core, which forms the (wear-resistant) surface of the roller.
- the bandage can be designed as a completely circumferential (one-piece) ring or, alternatively, can be formed from several segments attached to the core.
- press rolls or work rolls can also be used which are not designed with separate bandages, but instead, for example, in one piece or segmented.
- the press rolls are always equipped with a (wear-resistant) roll surface on the peripheral surface as a working surface.
- the roller press is equipped with sensors that record various operating data of the roller press.
- B. can be stored on a computer and / or visualized in a control room of the system. So e.g. B. measured the torque of the press rollers, the hydraulic pressures in the cylinders of the loose roller and the gap width with suitable transducers or sensors, the transducers / sensors z. B. with a control device, z. B. a programmable logic controller (PLC), which in turn is connected to a control room of the system or with a computer arranged in the control room.
- PLC programmable logic controller
- a high-pressure roller press for bed crushing in which the drive and movement parameters of at least one roller are measured as control parameters during operation, wherein the ratio of these values to one another is formed and this ratio is always kept essentially constant by reducing or increasing the roller contact pressure force of the rollers.
- the drive power of a main motor and the peripheral speed of the rolls and the ratio of these used as a controlled variable e.g. B. measured during operation, the drive power of a main motor and the peripheral speed of the rolls and the ratio of these used as a controlled variable.
- the DE 42 26 182 A1 describes a high-pressure roller press in which the bearing blocks of the floating roller are supported against hydraulic cylinders of a hydropneumatic system, with sensors being provided for measuring the width of the roller gap that occurs on the two roller sides during operation.
- the sensors are used to measure the distance between the bearing blocks of the two rollers and the signals obtained are fed via lines to the inputs of a monitoring and control unit.
- the sensors measure the distance between the bearing blocks that occurs during operation of the machine and thus also the width of the nip that occurs during operation on both sides of the roll, either continuously or in a timed manner, and the difference between the two measured values is calculated and compared with a specified tolerance value. If there is an asymmetrical load on the nip, e.g.
- a control intervention is carried out via the central monitoring and control unit, in this case relating to the feeding of the roller gap, by actuating servomotors for metering flaps set at the feed chute.
- the monitoring of the operating status of rotating rollers in an industrial plant is z. B. also in the WO 2007/025395 A1 described, namely for mills for grain processing. Vibrations are monitored and a time-varying electrical signal is generated from them, which is subjected to a frequency analysis.
- the detection of the vibrations can, for. B. by means of an acceleration sensor attached to the bearing of the rotating roller.
- the analysis can be done with a computer that can also be integrated into a control system of an automated industrial plant, which z. B. can also have monitoring screens for displaying the operating status.
- the industrial plant can also have several rotating rollers and several systems, the individual systems being networked with one another and with a monitoring centre, e.g. B. wirelessly networked.
- the WO 2018/036978 A1 describes a self-optimizing, adaptive production processing system with a grinding system that contains a roller press, with at least one sensor for acquiring measured values relating to a state of at least one roller being provided, so that measured values are acquired that characterize a state of the roller.
- a data receiver of a control unit of the production processing system measured values are received from a data transmitter of the measuring device of at least one roll.
- the roller operation and the width of the gap between the rollers and/or the parallelism of the rollers are automatically optimized by the control unit or by a control device connected to the control unit based on the measured values received.
- roller mill with two counter-rotating grinding rollers is known, which is equipped with pin-shaped profile bodies and in which an autogenous wear protection layer is formed.
- the roller mill has a monitoring device which checks the state of wear of the pin-shaped profile bodies and the state of the autogenous anti-wear layer and also the presence or absence of pin-shaped profile bodies notes.
- the roller mill can have at least one sensor, which can be arranged such that it can be moved with respect to the grinding roller.
- the monitoring of the operating status of machines is z. B. also in the WO 2017/197449 A1 described, with a large number of parameters of the machine being measured and thus measured values being made available, with normalized indicator values being generated from these measured values and with these normalized indicator values being used to describe the state of the machine.
- Corresponding machine modules each equipped with a computer, can be assigned to individual machines. The individual machine modules can be connected to a common system module via a network. In addition, machine modules from different plants can also be connected directly to a central monitoring system, which collects sensor data from a large number of machine modules from several plants, which can also be geographically widely distributed, so that methods of the "Internet of Things" can be used.
- the US 2005/0049801 A1 deals with the monitoring of machines with moving components, with a locally arranged analysis computer being provided in the area of the machine, with which measured values can be recorded and evaluated. The evaluated data can be transferred to a remote, external computer.
- the US7182283B1 also describes a system with roller mills with driven grinding tables and the monitoring of such a system.
- the invention is based on the technical problem in connection with high-pressure roller presses for the crushing, compacting or briquetting of Material are intended to create a method that allows a simple, safe and reliable monitoring of a condition or operating condition of the high-pressure roller press.
- the analysis computer or edge computer is preferably wired with at least one connecting cable to the measured value recorder(s) arranged on the roller press.
- the invention is based on the finding that it is advantageous to first store the operating data determined with the measured value recorders as raw data on a powerful edge computer, which is stationed locally in the immediate vicinity of the roller press and is particularly preferably connected to a cable connected to the sensors.
- this edge computer is not only used to store the operating data as raw data, but also the analysis or evaluation of the raw data is carried out directly on the edge computer using appropriate algorithms that are stored on the edge computer.
- the raw data can be collected in a database on the analysis computer and made available from there (e.g. for retrieval with a terminal).
- the raw data is preferably stored redundantly on local storage media, e.g. B. Edge computer hard drives.
- B. Edge computer hard drives Basically known and available hardware can be used, ie powerful edge computers with large data memories and powerful processors can be used, it being possible to fall back on the fundamentally known principles of "edge computing".
- a large number of basically known sensors can be used in or on the press to determine and store the operating data, e.g. B.
- Measured value recorders or sensors for determining the torque of one or both rollers, the hydraulic pressure in or in the cylinders for the adjustment of the floating roller, position sensors and/or displacement sensors for determining the gap width of the roller gap and/or for determining the absolute position the loose roller or the position of the loose roller relative to a stationary press frame, with position sensors z. B. are arranged in the bearing points of the floating roller and / or the fixed roller.
- temperature sensors, flow sensors, etc. can be used come.
- the sensors can record analogue measured values, e.g. B.
- edge computing sensors with a digital output can also be used, which output the signal as a coded pulse train, for example.
- the roller press characteristics generated on the edge computer by applying the stored algorithms are accessible via a wireless network, e.g. B. via the Internet, can be accessed online or they can be transmitted to end devices via the wireless network (wirelessly).
- the terminals can be z. These could be external PCs, notebooks, tablets or smartphones, for example.
- access to the identification data for the purpose of information or visualization on the end device is only possible with appropriate access authorization.
- the edge computer is connected to a router, e.g. B. industrial router connected via which a connection to a wireless network, z. B. to the Internet, so that online access to the identification data stored in the database on the edge computer is possible.
- the retrieval or access does not take place directly via the industrial router, but via an external portal that is wireless, e.g. B. is connected to the industrial router via a VPN connection (Virtual Private Network). So e.g. for example, authorized persons can access the portal via suitable end devices with an https connection and access the key data from there (via VPN) via the industrial router.
- a VPN connection Virtual Private Network
- the VPN connection e.g. B. the possibility to access the edge computer for remote maintenance.
- Appropriate access rights are of course assigned for the portal and the end devices, with the traceability of the accesses being registered by means of logs.
- z. B. directly concrete data of the machine z. B. the nip, the power consumption or the like are currently displayed and visualized.
- statistical evaluations can be made available as characteristic data, e.g. B. Weekly or monthly reports on the machine status.
- the characteristics are not simple machine data or evaluated or compressed measurement data that relate directly to a measurement variable of a sensor (e.g. power, gap width or the like), but are particularly preferably via appropriate algorithms special conditions, e.g. B. critical states are determined and visualized or evaluated.
- the invention is based on the finding that the programmable logic controllers (PLCs) commonly used in practice, which are connected to the sensors, generally cannot provide, process and store the measurement data at high speed or a high sampling rate .
- the data is preferably forwarded directly by the sensors without an interposed PLC the edge computer or to an evaluation unit connected to the edge computer or integrated into the edge computer, which is suitable for recording and storing the operating data with the high sampling rate.
- 50 Hz means that 50 readings per second (ie one reading every 20 ms) are made available.
- the invention has recognized that specific operating states, malfunctioning states or critical states can only be determined, or particularly easily, if the operating data are made available with a correspondingly high sampling rate. This creates extremely large amounts of data. However, since these are stored locally and wired on the edge computer directly on site, these amounts of data can be handled without any problems. Access to this large amount of raw data via a wireless network is not necessary, since the large amounts of data are initially compressed by suitable evaluations on the edge computer, so that the user only has to access the compressed or evaluated data via a wireless network. In principle, it is possible to record only one measured value (or type of measured value) as raw data and to determine one or more characteristic data from it using an analysis algorithm. However, several different operating data are preferably recorded as raw data and evaluated with an analysis algorithm in the sense of a linking evaluation.
- the invention has recognized that an analysis of the high-frequency recorded operating data surprisingly detects the passage of a foreign body through the nip of the high-pressure roller press, particularly when several (different) measured values are recorded and evaluated as raw data and the Characteristics are determined by linking the signals or raw data using an algorithm.
- the torque of a press roll or the torques of both press rolls can be used as operating data.
- the torques of the press rollers are constant within certain limits during operation.
- the roll gap is also kept essentially constant by the type of adjustment of the loose roll described above.
- the edge computer can now detect the passage of foreign bodies on the basis of the raw data recorded at high frequency determine that e.g. B. easily foreign body passages can be counted.
- further operating data are particularly preferably recorded and evaluated, eg the gap width at one or more gap positions and/or the hydraulic pressure of one or more hydraulic cylinders with which the loose roller is set against the fixed roller.
- the evaluation and, for example, foreign body detection can consequently be significantly improved by a combined or linked evaluation of several measured values (or several types of measured values).
- the advantages described can be realized equally with different machine types, eg roller mills, briquetting machines and compacting machines.
- the operating data for the torque is not accessed, but only the result of the evaluation and consequently the number of foreign body passages that are counted or summed up, or a message can be sent to a terminal device if a foreign body passage has been registered.
- This can e.g. B. carried out a further evaluation of the foreign body passages, so that z. B. repeatedly occurring foreign body passages, irregularities or the like can be analyzed and identified.
- This can e.g. B. to draw conclusions about the operation of upstream or other system components, e.g. B. an upstream crusher. If it z. If, for example, temporary disruptions occur in an upstream crusher, the loading of the press with undesirably large parts can increase and this would in turn have to be determined by the foreign body detection.
- the configuration according to the invention enables the processes to be optimized from the point of view of "Industry 4.0" or the “Internet of Things”.
- the roller press can be expanded into a “talking” machine.
- Programmed algorithms are used here, with algorithms or methods of artificial intelligence (“AI”) and consequently self-learning or self-optimizing algorithms also being used if necessary.
- AI artificial intelligence
- the described high-frequency sampling of the torque is - as described - just an example of the data analysis according to the invention, z. B. to monitor the passage of foreign bodies through the nip.
- another measured value can also be analyzed and evaluated for this purpose.
- Such an evaluation can also be used to evaluate short-term fluctuations in the course of the passage of a foreign body.
- the evaluation result can be further improved by analyzing a first operating parameter in combination with a second operating parameter and drawing conclusions about the respective event using an algorithm.
- it can be expedient to combine the development of the torque with a measurement of the roll gap.
- a measurement of the hydraulic pressure can be combined with the roll gap.
- a further example of the monitoring of a state of the roller press according to the invention is the monitoring of the state of wear of the roller surfaces (eg the bandages) of the high-pressure roller press. Since the usually registered roller gap is adjusted with the help of the hydraulic cylinders in such a way that it is largely the same during operation is kept constant, it is not possible to draw conclusions about the state of wear of the rolls or their roll surfaces (e.g. drums) by recording the roll gap. According to a further proposal of the invention, it is therefore provided that the position of the floating roller is recorded as a function of time with one or more position sensors and the data is stored on the analysis computer.
- the wear condition of the roll surface can be determined from the measured data and a forecast for a remaining service life of the roll surface can be generated.
- the position sensors preferably detect the position of the bearing points of the floating roller, which in this embodiment means an absolute measurement of the position of the floating roller or its bearing points, ie a determination of the position relative to a stationary reference system, e.g. B. the press frame. While the gap width of the press nip does not or should not change during operation, since the wear of the roll surface/bandage causes the floating roll to be increasingly adjusted against the fixed roll, the wear on the roll surfaces can be measured very easily using the determine the changing position of the loose roller.
- the subject matter of the invention is not only the method described, but also a system for crushing, compacting or briquetting material according to claim 10. It is therefore not only the method but also the system that is protected, which uses an edge computer of the described Art is equipped, this edge computer is equipped with appropriate programs for data processing and / or algorithms that are set up to carry out the method described.
- this high-pressure roller press 1 z. B. is intended for crushing granular material, alternatively for compacting or briquetting of material.
- the roller press has a press frame 2 and two press rollers 3a, 3b which are rotatably mounted in the press frame 2 and are driven in opposite directions to rotate. A nip is formed between the press rolls, the gap width of which can be changed during operation. Because one of the two press rollers is designed as a stationary roller 3a mounted in the press frame 2 and the other The press roller is designed as a loose roller 3b, this loose roller having power generating means, e.g. B.
- Each of the two press rollers 3a, 3b can be designed as a solid roller or segmented roller or preferably have a driven roller core on the one hand and a bandage (e.g. ring bandage) arranged on the roller core on the other hand, which B. is equipped with a wear-resistant surface. Details are not shown in the figures.
- Such a roller press 1 can be connected in the usual way to a programmable logic controller or PLC 5, which in turn can be connected to a higher-level system controller or a control room 6.
- the operation of the roller press 1 can be controlled and monitored in a known manner via the control room 6 .
- the PLC 5 can be connected on the one hand to the drives of the roller press and on the other hand to various measured-value recorders.
- a special computer is provided as an alternative or in addition to the programmable logic controller 5, namely an edge computer as an analysis computer 7, which is wired via one or more connecting cables 8 to measured value sensors 9 of the roller press.
- This edge computer or analysis computer 7 is stationed locally in the immediate vicinity of the roller press.
- the operating data registered with the measured value recorders 9 are stored as raw data on this analysis computer 7 .
- the measured value recorders 9 can be equipped with (additional) measuring devices or measuring cards 10, with which the analog measurement data are converted into digital operating data R.
- Optical connecting cables for example optical waveguides, can preferably be used to connect the measuring card 10 to the analysis computer 7 for particularly fast data transmission.
- the analysis computer 7 is provided as an edge computer with large data memories 11, processors 12 and specially designed algorithms 13 for the analysis and evaluation of the operating data.
- a plurality of storage media 11 for redundant data storage are preferably provided in the analysis computer 7 .
- the raw data R are stored on the analysis computer 7 and evaluated with the analysis algorithms 13 and characteristic data K of the roller press 1 are thus generated, which are also stored on the analysis computer.
- these characteristic data K are transmitted from the analysis computer 7 via a wireless network 14 to one or more terminals 15, e.g. B. PCs, tablets, smartphones or the like, ie the terminal devices 15 can be used to access the characteristic data K.
- the characteristics K in the analysis computer 7 in z. B. a database are stored as compressed data and are provided in the database for online access via PC, smartphone or the like, namely z. B. for corresponding system status displays.
- the operating data R can be recorded in a conventional manner using known measured value sensors 9 that are optionally provided in the area of the roller press anyway, namely, for example, B. the torque of a press roller or both press rollers, the hydraulic pressure of the hydraulic cylinder for the loading of the floating roller, position sensors for determining the variable nip, position sensors for the Determination of the absolute position of the floating roller or the position of the floating roller relative to the stationary press frame, load cells, temperature sensors, flow rate sensors or the like.
- the respective state of the roller press 1 or values of the sensors 9 mentioned are displayed in a condensed form, so that a current machine status can be visualized.
- statistical evaluations can be queried on terminal 15, which, however, are not generated on terminal 15 but on analysis computer 7, e.g. B. individual weekly reports, monthly reports or the like.
- analysis computer 7 e.g. B. individual weekly reports, monthly reports or the like.
- the method according to the invention can be used to monitor disruptive states, unusual states or the like.
- the operating data is raw data R with a high sampling rate of more than 100 Hz, e.g. B. recorded more than 200 Hz and stored on the analysis computer 7.
- the analysis algorithms 13 already mentioned generate the desired characteristic data or characteristic values K from the very large amounts of data. B. can be accessed via the Internet.
- the computer 7 is connected to an industrial router 16 for online access, which in a preferred variant is connected to a portal 18 via a VPN network or a VPN connection 17 .
- the terminals 15 consequently do not access the industrial router 16 directly for querying the evaluated characteristics, but access the portal 18, e.g. B. via secure or encrypted https connections 19.
- an additional computer or PC 21 can optionally be connected to the portal 18 via an additional VPN connection 20, so that not only data is queried via this PC in the sense of remote maintenance, but also to the analysis computer 7 or to the Roller press can be accessed.
- field data F and consequently data from other components of the system can be detected, z. B. Operating data of a crusher.
- data, commands or the like can also be transmitted from the analysis computer 7 to the roller press 1 or other components of the system. So e.g. B. the evaluated characteristic data can be used for controlling or regulating the press or other machines.
- the torques and/or the gap widths of the two press rollers 3a, 3b are recorded and evaluated as operating data.
- the torques M of the two rolls on the one hand and the gap widths W (at two different locations in the press nip) on the other hand are plotted (as raw data) as a function of time t, specifically in the case of a foreign body passing through the roll nip. This was done in the manner already described, a high-frequency sampling and storage with z. B. 200 readings per second. In the course of a When a foreign body passes through the roller gap, there is a brief increase in the torque M and the gap width W.
- Another possible application concerns wear monitoring or maintenance forecasts, e.g. B. monitoring the wear of the roller press drums.
- B. monitors the absolute position of the floating roller 3b with one or more position sensors.
- the position of the loose roller relative to a stationary press frame 2 is referred to as the position of the loose roller 3b.
- Position sensors in the area of the bearing points be arranged the loose roller. In 3 the position of a bearing point is shown at the top left as a function of time.
- the absolute position of the floating roller 3b is detected with one or more position sensors.
- the position of the loose roller relative to a stationary press frame 2 is referred to as the position of the loose roller 3b.
- position sensors 9 can be arranged in the area of the bearing points of the loose roller 3b.
- the position of a bearing point is shown as a function of time t at the top left. It can be seen that these raw data R are first recorded at high frequency and stored on the analysis computer 7 . From this, this generates the characteristic data K, which are plotted in the graphic below. It is a measure of the wear V of the roll surface, eg the bandage, and it can be seen that this measure increases with increasing service life, since the work roll diameter, eg the bandage diameter, decreases due to the wear V. When a certain upper limit value is reached, the rollers or the roller surfaces, for example the bandage, are exchanged. This is recognizable by the abrupt drop at the points shown. While the raw data R actually relate to the position data, the characteristic data K are data that represent the state of wear V of the roll surfaces. In this way, maintenance predictions can be made.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
- Press Drives And Press Lines (AREA)
- Disintegrating Or Milling (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Forging (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Überwachung (des Zustandes/ Betriebszustandes) einer Hochdruck-Walzenpresse im Zuge des Zerkleinerns, Kompaktierens oder Brikettierens von Material,
- wobei die Walzenpresse zwei rotierend angetriebene Presswalzen aufweist, zwischen denen ein Walzenspalt gebildet ist, dessen Spaltweite während des Betriebes veränderlich ist,
- wobei während des Betriebes mit einem oder mit mehreren Messwert-Aufnehmern Betriebsdaten der Walzenpresse ermittelt und auf einem Rechner gespeichert werden.
- wherein the roller press has two rotatingly driven press rollers, between which a roller gap is formed, the gap width of which can be changed during operation,
- operating data of the roller press being determined during operation with one or more measured-value sensors and stored on a computer.
Eine solche Hochdruck-Walzenpresse für die Zerkleinerung von Material wird auch als Gutbettwalzenmühle bezeichnet. Die Erfindung betrifft aber auch Hochdruck-Walzenpressen für das Kompaktieren oder Brikettieren von Material. Bei dem Material handelt es sich insbesondere um stark abrasives Material, z. B. Erz, Zementklinker, Schlacke oder Keramikgrundstoffe. Die Walzenpresse kann auch für die Kompaktierung von z. B. Düngemitteln eingesetzt werden. Eine der Presswalzen ist bevorzugt als Festwalze ausgebildet und folglich ortsfest in einem Pressengestell drehbar gelagert. Zumindest eine Presswalze ist als Loswalze ausgebildet, d. h. sie ist über Krafterzeugungsmittel, z. B. über Hydraulikzylinder, mit sich während des Betriebes veränderlicher Spaltweite gegen die andere Walze, z. B. die Festwalze anstellbar. Die beiden Presswalzen werden über Antriebe gegenläufig (synchron) angetrieben. Der Spalt zwischen den Walzen stellt sich - aufgrund der beschriebenen Anstellung der Loswalze gegen die Festwalze - ein, bis ein den Anstellkräften entsprechender Druck zwischen den Walzen wirkt. Die Spaltweite ergibt sich dabei durch das Verhältnis der Anstellkräfte zu den von dem zu verarbeitenden Material ausgehenden Reaktionskräften. Jede Presswalze weist z. B. einen rotierend angetriebenen Walzenkern und eine auf dem Walzenkern befestigte Bandage auf, welche die (verschleißfeste) Oberfläche der Walze bildet. Die Bandage kann als vollständig umlaufender (einstückiger) Ring ausgebildet sein oder alternativ von mehreren, auf dem Kern befestigten Segmenten gebildet werden. Es können aber auch Presswalzen bzw. Arbeitswalzen eingesetzt werden, die nicht mit separaten Bandagen ausgebildet sind, sondern z.B. einstückig oder segmentiert. Stets sind die Presswalzen auf der Umfangsfläche mit einer (verschleißfesten) Walzenoberfläche als Arbeitsoberfläche ausgerüstet.Such a high-pressure roller press for the comminution of material is also referred to as a high-pressure roller mill. However, the invention also relates to high-pressure roller presses for compacting or briquetting material. The material is in particular highly abrasive material, e.g. B. ore, cement clinker, slag or ceramic base materials. The roller press can also be used for compacting e.g. B. fertilizers are used. One of the press rollers is preferably designed as a fixed roller and is consequently rotatably mounted in a stationary manner in a press frame. At least one press roller is designed as a loose roller, ie it is connected via force generating means, e.g. B. via hydraulic cylinders, with variable gap width during operation against the other roll, z. B. the fixed roller is adjustable. The two press rollers are driven in opposite directions (synchronously) by drives. The gap between the rollers arises—due to the described adjustment of the loose roller against the fixed roller—until a pressure corresponding to the adjustment forces acts between the rollers. The gap width results by the ratio of the contact forces to the reaction forces emanating from the material to be processed. Each press roll has z. B. a rotatingly driven roller core and a bandage attached to the roller core, which forms the (wear-resistant) surface of the roller. The bandage can be designed as a completely circumferential (one-piece) ring or, alternatively, can be formed from several segments attached to the core. However, press rolls or work rolls can also be used which are not designed with separate bandages, but instead, for example, in one piece or segmented. The press rolls are always equipped with a (wear-resistant) roll surface on the peripheral surface as a working surface.
In der Praxis ist es üblich, den Zustand bzw. Betriebszustand einer Hochdruck-Walzenpresse kontinuierlich bzw. quasi kontinuierlich zu überwachen, zu steuern und gegebenenfalls zu visualisieren. Dazu ist die Walzenpresse mit Messwert-Aufnehmern ausgerüstet, die verschiedene Betriebsdaten der Walzenpresse aufnehmen, die im Stand der Technik z. B. auf einem Rechner gespeichert werden können und/oder in einer Leitwarte der Anlage visualisiert werden. So werden z. B. das Drehmoment der Presswalzen, die Hydraulikdrücke in den Zylindern der Loswalze und die Spaltweite mit geeigneten Aufnehmern bzw. Sensoren gemessen, wobei die Aufnehmer/Sensoren z. B. mit einer Steuereinrichtung, z. B. einer speicherprogrammierbaren Steuerung (SPS) verbunden sind, die wiederum mit einer Leitwarte der Anlage bzw. mit einem in der Leitwarte angeordneten Rechner verbunden ist.In practice, it is customary to continuously or quasi-continuously monitor, control and, if necessary, visualize the state or operating state of a high-pressure roller press. For this purpose, the roller press is equipped with sensors that record various operating data of the roller press. B. can be stored on a computer and / or visualized in a control room of the system. So e.g. B. measured the torque of the press rollers, the hydraulic pressures in the cylinders of the loose roller and the gap width with suitable transducers or sensors, the transducers / sensors z. B. with a control device, z. B. a programmable logic controller (PLC), which in turn is connected to a control room of the system or with a computer arranged in the control room.
Aus der
Die
Die Überwachung des Betriebszustandes rotierender Walzen in einer industriellen Anlage wird z. B. auch in der
Die
Aus der
Die Überwachung des Betriebszustandes von Maschinen wird z. B. auch in der
Die
In der
Schließlich offenbart die
Weitere Verfahren zur Überwachung von Walzenpressen sind aus der
Die
Insgesamt besteht in der Maschinen- und Anlagentechnik das Bedürfnis, den Zustand von Maschinen zu überwachen und zu visualisieren. In der Praxis erfolgt dieses im Zusammenhang mit Hochdruck-Walzenpressen in der Regel über die Erfassung der Sensordaten mithilfe herkömmlicher speicherprogrammierbarer Steuerungen, die mit einer Leitwarte der Anlage verbunden sind.Overall, there is a need in machine and plant engineering to monitor and visualize the condition of machines. In practice, this is usually done in connection with high-pressure roller presses by collecting the sensor data using conventional programmable logic controllers that are connected to a control room in the plant.
Im Übrigen sind sogenannte übergeordnete Lösungen bekannt, bei denen Betriebsdaten von Maschinen zentral z.B. in einer Cloud gespeichert und gegebenenfalls ausgewertet werden, sodass mit verschiedenen Endgeräten, z. B. Laptops, Tablets oder Smartphones, über das Internet auf die Daten zugegriffen werden kann.Incidentally, so-called higher-level solutions are known in which operating data from machines is stored centrally, e.g. in a cloud, and evaluated if necessary, so that different end devices, e.g. B. laptops, tablets or smartphones, can be accessed via the Internet on the data.
Ausgehend von dem vorbekannten Stand der Technik liegt der Erfindung das technische Problem zugrunde, im Zusammenhang mit Hochdruck-Walzenpressen, die für die Zerkleinerung, Kompaktierung oder Brikettierung von Material bestimmt sind, ein Verfahren zu schaffen, das eine einfache, sichere und zuverlässige Überwachung eines Zustandes bzw. Betriebszustandes der Hochdruck-Walzenpresse ermöglicht.Based on the prior art, the invention is based on the technical problem in connection with high-pressure roller presses for the crushing, compacting or briquetting of Material are intended to create a method that allows a simple, safe and reliable monitoring of a condition or operating condition of the high-pressure roller press.
Zur Lösung dieser Aufgabe lehrt die Erfindung bei einem gattungsgemäßen Verfahren zur Überwachung einer Hochdruck-Walzenpresse der eingangs beschriebenen Art,
- dass die Betriebsdaten (die mit dem oder den Messwert-Aufnehmern ermittelt werden) als Rohdaten auf einem lokal im Bereich der Walzenpresse angeordneten und mit der Walzenpresse bzw. mit dem Sensor oder mit den Sensoren verbundene Edge-Computer als Analyserechner gespeichert werden,
- dass die Betriebsdaten bzw. Rohdaten auf dem Analyserechner mit Analysealgorithmen ausgewertet und damit Kenndaten der Walzenpresse erzeugt und diese Kenndaten auf dem Analyserechner gespeichert werden,
- wobei die Kenndaten von dem Analyserechner über ein drahtloses Netzwerk (d.h. drahtlos) an zumindest ein Endgerät übermittelt und auf dem Endgerät angezeigt bzw. visualisiert werden.
- that the operating data (which are determined with the measured value recorder or sensors) are stored as raw data on an edge computer arranged locally in the area of the roller press and connected to the roller press or to the sensor or sensors as an analysis computer,
- that the operating data or raw data is evaluated on the analysis computer with analysis algorithms and thus characteristic data of the roller press is generated and these characteristic data are stored on the analysis computer,
- wherein the characteristic data are transmitted from the analysis computer via a wireless network (ie wirelessly) to at least one end device and are displayed or visualized on the end device.
Der Analyserechner bzw. Edge-Computer ist bevorzugt kabelgebunden mit zumindest einem Verbindungskabel mit dem oder mit den an der Walzenpresse angeordneten Messwert-Aufnehmern verbunden.The analysis computer or edge computer is preferably wired with at least one connecting cable to the measured value recorder(s) arranged on the roller press.
Die Erfindung geht von der Erkenntnis aus, dass es vorteilhaft ist, die mit den Messwert-Aufnehmern ermittelten Betriebsdaten zunächst als Rohdaten auf einem leistungsfähigen Edge-Computer zu speichern, der lokal in unmittelbarer Nähe der Walzenpresse stationiert und besonders bevorzugt kabelgebunden mit den Sensoren verbunden ist. Dieser Edge-Computer dient jedoch nicht nur der Speicherung der Betriebsdaten als Rohdaten, sondern auch die Analyse bzw. Auswertung der Rohdaten erfolgt mit entsprechenden Algorithmen, die auf dem Edge-Computer gespeichert sind, unmittelbar auf dem Edge-Computer. Auf eine Speicherung der Betriebsdaten bzw. Rohdaten in einem übergeordneten Netzwerk oder in einer Cloud wird ebenso verzichtet wie auf eine Übertragung der Rohdaten über das Internet. Vielmehr erfolgt bereits lokal eine Analyse mit geeigneten Algorithmen und eine Speicherung der aus diesen Rohdaten mithilfe der Algorithmen erzeugten (komprimierten) Kenndaten, die z. B. in einer Datenbank auf dem Analyserechner gesammelt und von dort (z. B. für einen Abruf mit einem Endgerät) zur Verfügung gestellt werden können. Die Speicherung der Rohdaten erfolgt bevorzugt redundant auf lokalen Speichermedien, z. B. Festplatten des Edge-Computers. Dabei kann auf grundsätzlich bekannte und zur Verfügung stehende Hardware zurückgegriffen werden, d. h. es können leistungsfähige Edge-Computer mit großen Datenspeichern und leistungsfähigen Prozessoren zum Einsatz kommen, wobei auf die grundsätzlich bekannten Grundsätze des "Edge-Computing" zurückgegriffen werden kann.The invention is based on the finding that it is advantageous to first store the operating data determined with the measured value recorders as raw data on a powerful edge computer, which is stationed locally in the immediate vicinity of the roller press and is particularly preferably connected to a cable connected to the sensors. However, this edge computer is not only used to store the operating data as raw data, but also the analysis or evaluation of the raw data is carried out directly on the edge computer using appropriate algorithms that are stored on the edge computer. There is no storage of the operating data or raw data in a higher-level network or in a cloud, nor is there any transmission of the raw data via the Internet. Rather, an analysis is already carried out locally using suitable algorithms and the (compressed) characteristic data generated from this raw data using the algorithms is stored. B. can be collected in a database on the analysis computer and made available from there (e.g. for retrieval with a terminal). The raw data is preferably stored redundantly on local storage media, e.g. B. Edge computer hard drives. Basically known and available hardware can be used, ie powerful edge computers with large data memories and powerful processors can be used, it being possible to fall back on the fundamentally known principles of "edge computing".
Für die Ermittlung und Speicherung der Betriebsdaten können eine Vielzahl von grundsätzlich bekannten Sensoren in bzw. an der Presse verwendet werden, z. B. Messwert-Aufnehmer oder Sensoren zur Ermittlung des Drehmomentes einer oder beider Walzen, des Hydraulikdruckes in dem oder in den Zylindern für die Anstellung der Loswalze, Positionssensoren und/oder Wegsensoren für die Ermittlung der Spaltweite des Walzenspaltes und/oder für die Ermittlung der Absolutposition der Loswalze bzw. der Position der Loswalze relativ zu einem ortsfesten Pressengestell, wobei Positionssensoren z. B. im Bereich der Lagerstellen der Loswalze und/oder der Festwalze angeordnet sind. Ergänzend oder alternativ können Temperatursensoren, Durchflusssensoren usw. zum Einsatz kommen. Die Sensoren können analoge Messwerte, z. B. als Stromsignale, zur Verfügung stellen, die kabelgebunden über eine geeignete Erfassungseinrichtung, z. B. über einen Wandler in digitale Daten transformiert werden, sodass digitale Rohdaten auf dem Edge-Computer gespeichert werden. Wichtig ist, dass die Verarbeitung und Analyse der Rohdaten auf dem lokalen Analysecomputer ("Edge-Computing") durchgeführt wird. Alternativ können aber auch Sensoren mit digitalem Ausgang eingesetzt werden, die das Signal z.B. als codierte Impulsfolge ausgeben.A large number of basically known sensors can be used in or on the press to determine and store the operating data, e.g. B. Measured value recorders or sensors for determining the torque of one or both rollers, the hydraulic pressure in or in the cylinders for the adjustment of the floating roller, position sensors and/or displacement sensors for determining the gap width of the roller gap and/or for determining the absolute position the loose roller or the position of the loose roller relative to a stationary press frame, with position sensors z. B. are arranged in the bearing points of the floating roller and / or the fixed roller. In addition or as an alternative, temperature sensors, flow sensors, etc. can be used come. The sensors can record analogue measured values, e.g. B. as current signals, which are wired via a suitable detection device, z. B. be transformed into digital data via a converter, so that digital raw data is stored on the edge computer. It is important that the processing and analysis of the raw data is carried out on the local analysis computer ("edge computing"). Alternatively, however, sensors with a digital output can also be used, which output the signal as a coded pulse train, for example.
Die auf dem Edge-Computer durch Anwendung der gespeicherten Algorithmen erzeugten Kenndaten der Walzenpresse sind über ein drahtloses Netzwerk, z. B. über das Internet, online abrufbar bzw. sie lassen sich über das drahtlose Netzwerk (drahtlos) an Endgeräte übermitteln. Bei den Endgeräten kann es sich z. B. um externe PCs, Notebooks, Tablets oder Smartphones handeln. Selbstverständlich ist ein Zugriff auf die Kenndaten zum Zwecke der Information oder Visualisierung auf dem Endgerät nur durch entsprechende Zugriffsberechtigung möglich. In einer bevorzugten Ausführungsform ist der Edge-Computer mit einem Router, z. B. Industrierouter, verbunden, über den eine Verbindung zu einem drahtlosen Netzwerk, z. B. zum Internet, hergestellt wird, sodass ein Onlinezugang zu den in der Datenbank auf dem Edge-Computer gespeicherten Kenndaten möglich ist. In einer bevorzugten Weiterbildung erfolgt der Abruf bzw. der Zugang nicht unmittelbar über den Industrierouter, sondern über ein externes Portal, das drahtlos, z. B. über eine VPN-Verbindung (Virtual Private Network) mit dem Industrierouter in Verbindung steht. So können z. B. berechtigte Personen über geeignete Endgeräte mit einer https-Verbindung auf das Portal und von dort (per VPN) über den Industrierouter auf die Kenndaten zugreifen. Optional besteht auch die Möglichkeit, z. B. einen Rechner für eine Fernwartung über ein VPN-Netzwerk mit dem Portal zu verbinden. Über einfache https-Verbindungen besteht dann (für Berechtigte) in der Regel nur die Möglichkeit, die Kenndaten abzurufen und folglich Informationen auf dem Endgerät zu visualisieren. Über die VPN-Verbindung besteht z. B. die Möglichkeit im Sinne einer Fernwartung auf den Edge-Computer zuzugreifen. Selbstverständlich werden für das Portal und die Endgeräte entsprechende Zugangsrechte vergeben, wobei die Nachvollziehbarkeit der Zugriffe mittels Protokollen registriert wird.The roller press characteristics generated on the edge computer by applying the stored algorithms are accessible via a wireless network, e.g. B. via the Internet, can be accessed online or they can be transmitted to end devices via the wireless network (wirelessly). The terminals can be z. These could be external PCs, notebooks, tablets or smartphones, for example. Of course, access to the identification data for the purpose of information or visualization on the end device is only possible with appropriate access authorization. In a preferred embodiment, the edge computer is connected to a router, e.g. B. industrial router connected via which a connection to a wireless network, z. B. to the Internet, so that online access to the identification data stored in the database on the edge computer is possible. In a preferred development, the retrieval or access does not take place directly via the industrial router, but via an external portal that is wireless, e.g. B. is connected to the industrial router via a VPN connection (Virtual Private Network). So e.g. For example, authorized persons can access the portal via suitable end devices with an https connection and access the key data from there (via VPN) via the industrial router. Optionally, there is also the possibility, e.g. B. to connect a computer to the portal via a VPN network for remote maintenance. Via simple https connections, there is usually only the (for authorized persons). Possibility to retrieve the identification data and consequently visualize information on the terminal. Via the VPN connection, e.g. B. the possibility to access the edge computer for remote maintenance. Appropriate access rights are of course assigned for the portal and the end devices, with the traceability of the accesses being registered by means of logs.
Als Kenndaten können z. B. unmittelbar konkrete Daten der Maschine, z. B. der Walzenspalt, die Leistungsaufnahme oder dergleichen aktuell angezeigt und visualisiert werden. Alternativ oder ergänzend können statistische Auswertungen als Kenndaten zur Verfügung gestellt werden, z. B. Wochen- oder Monatsberichte über die Maschinenzustände.As characteristics z. B. directly concrete data of the machine, z. B. the nip, the power consumption or the like are currently displayed and visualized. Alternatively or in addition, statistical evaluations can be made available as characteristic data, e.g. B. Weekly or monthly reports on the machine status.
In besonders bevorzugter Ausführungsform handelt es sich bei den Kenndaten jedoch nicht um einfache Maschinendaten bzw. ausgewertet oder komprimierte Messdaten, die sich unmittelbar auf eine Messgröße eines Sensors beziehen (z. B. Leistung, Spaltweite oder dergleichen), sondern besonders bevorzugt werden über entsprechende Algorithmen besondere Zustände, z. B. kritische Zustände ermittelt und visualisiert oder ausgewertet.In a particularly preferred embodiment, however, the characteristics are not simple machine data or evaluated or compressed measurement data that relate directly to a measurement variable of a sensor (e.g. power, gap width or the like), but are particularly preferably via appropriate algorithms special conditions, e.g. B. critical states are determined and visualized or evaluated.
Bevorzugt werden die Betriebsdaten und folglich die Rohdaten mit einer hohen Abtastrate von mehr als 50 Hz, z. B. mehr als 100 Hz, vorzugsweise zumindest 200 Hz aufgenommen und auf dem Analyserechner gespeichert. Die Erfindung geht dabei von der Erkenntnis aus, dass die in der Praxis üblicherweise eingesetzten speicherprogrammierbaren Steuerungen (SPS), die mit den Sensoren verbunden sind, in der Regel die Messdaten nicht mit hoher Geschwindigkeit bzw. hoher Abtastrate zur Verfügung stellen, verarbeiten und speichern können. Erfindungsgemäß erfolgt die Weiterleitung der Daten durch die Sensoren bevorzugt ohne eine zwischengeschaltete SPS unmittelbar an den Edge-Computer bzw. an eine mit dem Edge-Computer verbundene oder in den Edge-Computer integrierte Auswerteeinheit, die dazu geeignet ist, die Betriebsdaten mit der hohen Abtastrate aufzunehmen und zu speichern. 50 Hz bedeutet, dass 50 Messwerte pro Sekunde (d. h. ein Messwert je 20 ms) zur Verfügung gestellt werden. Die Erfindung hat erkannt, dass sich bestimmte Betriebszustände, Störzustände oder kritische Zustände nur dann oder besonders einfach dann ermitteln lassen, wenn die Betriebsdaten mit entsprechend hoher Abtastrate zur Verfügung gestellt werden. Damit entstehen extrem große Datenmengen. Da diese jedoch lokal und kabelgebunden auf dem Edge-Computer unmittelbar vor Ort gespeichert werden, lassen sich diese Datenmengen ohne Probleme handhaben. Ein Zugriff über ein drahtloses Netzwerk ist auf diese große Rohdatenmenge nicht erforderlich, da auf dem Edge-Computer die großen Datenmengen zunächst durch geeignete Auswertungen gleichsam komprimiert werden, sodass der Nutzer über ein drahtloses Netzwerk nur auf die komprimierten bzw. ausgewerteten Daten zugreifen muss. Grundsätzlich besteht die Möglichkeit, lediglich einen Messwert (bzw. Messwerttyp) als Rohdaten aufzunehmen und daraus mit einem Analysealgorithmus ein oder mehrere Kenndaten zu bestimmen. Bevorzugt werden jedoch mehrere verschiedene Betriebsdaten als Rohdaten aufgenommen und im Sinne einer verknüpfenden Auswertung mit einem Analysealgorithmus ausgewertet.Preferably, the operational data and consequently the raw data with a high sampling rate of more than 50 Hz, e.g. B. recorded more than 100 Hz, preferably at least 200 Hz and stored on the analysis computer. The invention is based on the finding that the programmable logic controllers (PLCs) commonly used in practice, which are connected to the sensors, generally cannot provide, process and store the measurement data at high speed or a high sampling rate . According to the invention, the data is preferably forwarded directly by the sensors without an interposed PLC the edge computer or to an evaluation unit connected to the edge computer or integrated into the edge computer, which is suitable for recording and storing the operating data with the high sampling rate. 50 Hz means that 50 readings per second (ie one reading every 20 ms) are made available. The invention has recognized that specific operating states, malfunctioning states or critical states can only be determined, or particularly easily, if the operating data are made available with a correspondingly high sampling rate. This creates extremely large amounts of data. However, since these are stored locally and wired on the edge computer directly on site, these amounts of data can be handled without any problems. Access to this large amount of raw data via a wireless network is not necessary, since the large amounts of data are initially compressed by suitable evaluations on the edge computer, so that the user only has to access the compressed or evaluated data via a wireless network. In principle, it is possible to record only one measured value (or type of measured value) as raw data and to determine one or more characteristic data from it using an analysis algorithm. However, several different operating data are preferably recorded as raw data and evaluated with an analysis algorithm in the sense of a linking evaluation.
Besondere Bedeutung kommt der Aufnahme der Messwerte mit hohen Abtastrate z. B. bei der Erkennung eines Fremdkörperdurchgangs durch den Walzenspalt zu. So hat die Erfindung erkannt, dass sich durch eine Analyse der hochfrequenten aufgenommenen Betriebsdaten überraschend ein Fremdkörperdurchgang durch den Walzenspalt der Hochdruck-Walzenpresse feststellen lässt, und zwar insbesondere dann, wenn mehrere (verschiedene) Messwerte als Rohdaten aufgenommen und ausgewertet werden und die Kenndaten durch Verknüpfung der Signale bzw. Rohdaten mittels eines Algorithmus bestimmt werden. Dabei können als Betriebsdaten insbesondere das Drehmoment einer Presswalze oder die Drehmomente beider Presswalzen verwendet werden. In der Regel sind die Drehmomente der Presswalzen während des Betriebes in gewissen Grenzen konstant. Auch der Walzenspalt wird durch die eingangs beschriebene Art der Anstellung der Loswalze im Wesentlichen konstant gehalten. Denn in einer Hochdruck-Walzenpresse, z. B. Gutbettwalzenmühle, werden die zugeführten Partikel des Aufgabegutes nicht wie bei einem Brecher zwischen den Oberflächen der beiden Walzen gebrochen, sondern sie werden in einem Gutbett bzw. Materialbett unter hohem Druck verpresst und damit hocheffizient zerkleinert bzw. agglomeriert. Der Walzenspalt ist folglich größer als das durch den Walzenspalt hindurchgeführte und zu behandelnde Material. Überraschend wurde festgestellt, dass sich die Signale bzw. Signaländerungen geeigneter Betriebsdaten (z.B. Drehmoment, Hydraulikdruck und/oder Spaltweite) trotz der sehr hohen Trägheit der rotierenden Massen und trotz des Gewichtes der Walzen und insbesondere der Loswalze und trotz der Reibung zwischen Walzenlagerung und Rahmen erkennen lassen, und zwar erfindungsgemäß besonders bevorzugt aufgrund der hohen Abtastraten und in weiterer bevorzugter Ausgestaltung durch Verknüpfung mehrerer Signale bzw. mehrerer verschiedener Betriebsdaten durch geeignete Algorithmen. So hat die Erfindung z.B. durch Auswertung der hochfrequent aufgenommenen Rohdaten festgestellt, dass es beim Durchgang von Fremdkörpern kurzzeitig zu einem Anstieg des Drehmomentes an einer Walze oder an beiden Walzen kommt. Mit den bislang in der Praxis eingesetzten speicherprogrammierbaren Steuerungen und den vorgesehenen Visualisierungswerkzeugen am Leitrechner wurden solche kurzzeitigen Drehmomentschwankungen bislang nicht erkannt. Durch einen geeigneten Algorithmus kann der Edge-Computer nun jedoch auf der Basis der hochfrequent aufgenommenen Rohdaten einen Fremdkörperdurchgang feststellen, sodass z. B. auf einfache Weise Fremdkörperdurchgänge gezählt werden können. Grundsätzlich besteht die Möglichkeit, lediglich das Drehmoment einer oder beider Walzen als Rohdaten aufzunehmen und auszuwerten. Besonders bevorzugt werden zusätzlich zu dem Drehmoment bzw. zu den Drehmomenten weitere Betriebsdaten aufgenommen und ausgewertet, z.B. die Spaltweite an einer oder an mehreren Spaltpositionen und/oder der Hydraulikdruck einer oder mehrerer Hydraulikzylinder, mit denen die Loswalze gegen die Festwalze angestellt wird. Die Auswertung und z.B. Fremdkörpererkennung lässt sich folglich durch kombinierte bzw. verknüpfte Auswertung mehrerer Messwerte (bzw. mehrerer Messwerttypen) erheblich verbessern. Die beschriebenen Vorteile lassen sich gleichermaßen bei verschiedenen Maschinentypen, z.B. Walzenmühlen, Brikettiermaschinen und Kompaktiermaschinen realisieren.Of particular importance is the recording of the measured values with a high sampling rate, e.g. B. in the detection of a foreign body passage through the nip. The invention has recognized that an analysis of the high-frequency recorded operating data surprisingly detects the passage of a foreign body through the nip of the high-pressure roller press, particularly when several (different) measured values are recorded and evaluated as raw data and the Characteristics are determined by linking the signals or raw data using an algorithm. In particular, the torque of a press roll or the torques of both press rolls can be used as operating data. As a rule, the torques of the press rollers are constant within certain limits during operation. The roll gap is also kept essentially constant by the type of adjustment of the loose roll described above. Because in a high-pressure roller press, z. B. Material bed roller mill, the supplied particles of the feed material are not broken between the surfaces of the two rollers as in a crusher, but they are pressed in a material bed or material bed under high pressure and thus crushed or agglomerated highly efficiently. The nip is consequently larger than the material to be processed and passed through the nip. Surprisingly, it was found that the signals or signal changes of suitable operating data (e.g. torque, hydraulic pressure and/or gap width) are recognized despite the very high inertia of the rotating masses and despite the weight of the rollers and in particular the floating roller and despite the friction between the roller bearings and the frame according to the invention, particularly preferably due to the high sampling rates and in a further preferred embodiment by linking a plurality of signals or a plurality of different operating data using suitable algorithms. For example, by evaluating the raw data recorded at high frequency, the invention has established that when foreign bodies pass through, there is a brief increase in the torque on one roller or on both rollers. With the programmable logic controllers used in practice up to now and the visualization tools provided on the master computer, such short-term torque fluctuations have not been recognized so far. However, using a suitable algorithm, the edge computer can now detect the passage of foreign bodies on the basis of the raw data recorded at high frequency determine that e.g. B. easily foreign body passages can be counted. In principle, it is possible to record and evaluate only the torque of one or both rollers as raw data. In addition to the torque or torques, further operating data are particularly preferably recorded and evaluated, eg the gap width at one or more gap positions and/or the hydraulic pressure of one or more hydraulic cylinders with which the loose roller is set against the fixed roller. The evaluation and, for example, foreign body detection can consequently be significantly improved by a combined or linked evaluation of several measured values (or several types of measured values). The advantages described can be realized equally with different machine types, eg roller mills, briquetting machines and compacting machines.
Über die Endgeräte wird z. B. nicht auf die Betriebsdaten für das Drehmoment zugegriffen, sondern lediglich auf das Ergebnis der Auswertung und folglich auf die gezählten bzw. aufsummierten Fremdkörperdurchgänge oder es lässt sich eine Nachricht an ein Endgerät senden, wenn ein Fremdkörperdurchgang registriert wurde. Damit kann z. B. eine weitere Auswertung der Fremdkörperdurchgänge erfolgen, sodass z. B. zeitlich immer wieder auftretende Fremdkörperdurchgänge, Unregelmäßigkeiten oder dergleichen analysiert und festgestellt werden können. Damit kann z. B. ein Rückschluss auf den Betrieb vorgelagerter oder anderer Anlagenkomponenten gelingen, z. B. eines vorgeschalteten Brechers. Sofern es z. B. in einem vorgeschalteten Brecher insbesondere zu temporären Störungen kommt, kann sich die Beschickung der Presse mit ungewünscht großen Teilen erhöhen und dieses wäre wiederum durch die Fremdkörpererkennung zu ermitteln.About the terminals z. For example, the operating data for the torque is not accessed, but only the result of the evaluation and consequently the number of foreign body passages that are counted or summed up, or a message can be sent to a terminal device if a foreign body passage has been registered. This can e.g. B. carried out a further evaluation of the foreign body passages, so that z. B. repeatedly occurring foreign body passages, irregularities or the like can be analyzed and identified. This can e.g. B. to draw conclusions about the operation of upstream or other system components, e.g. B. an upstream crusher. If it z. If, for example, temporary disruptions occur in an upstream crusher, the loading of the press with undesirably large parts can increase and this would in turn have to be determined by the foreign body detection.
Insgesamt gelingt durch die erfindungsgemäße Ausgestaltung eine Optimierung der Prozesse unter dem Gesichtspunkt der "Industrie 4.0" bzw. des "Internet der Dinge". Die Walzenpresse lässt sich zu einer "sprechenden" Maschine erweitern. Dabei wird auf programmierte Algorithmen zurückgegriffen, wobei gegebenenfalls auch Algorithmen bzw. Methoden der künstlichen Intelligenz ("KI") und folglich selbstlernende bzw. sich selbst optimierende Algorithmen zum Einsatz kommen.Overall, the configuration according to the invention enables the processes to be optimized from the point of view of "Industry 4.0" or the "Internet of Things". The roller press can be expanded into a "talking" machine. Programmed algorithms are used here, with algorithms or methods of artificial intelligence ("AI") and consequently self-learning or self-optimizing algorithms also being used if necessary.
Die beschriebene hochfrequente Abtastung des Drehmomentes ist - wie beschrieben - lediglich ein Beispiel für die erfindungsgemäße Datenanalyse, z. B. zur Überwachung eines Fremdkörperdurchgangs durch den Walzenspalt. Alternativ kann zu diesem Zweck auch ein anderer Messwert analysiert und ausgewertet werden. So besteht auch die Möglichkeit, den Hydraulikdruck an den Hydraulikzylindern hochfrequent auszuwerten, welche die Loswalze beaufschlagen. Auch durch eine solche Auswertung lassen sich kurzzeitige Schwankungen im Zuge eines Fremdkörperdurchgangs auswerten. Das Auswerteergebnis lässt sich weiter verbessern, indem ein erster Betriebsparameter in Kombination mit einem zweitem Betriebsparameter analysiert wird und durch einen Algorithmus Rückschlüsse auf das jeweilige Ereignis gezogen werden. So kann es insbesondere zweckmäßig sein, die Entwicklung des Drehmomentes mit einer Messung des Walzenspaltes zu kombinieren. In gleicher Weise kann auch eine Messung des Hydraulikdruckes mit dem Walzenspalt kombiniert werden.The described high-frequency sampling of the torque is - as described - just an example of the data analysis according to the invention, z. B. to monitor the passage of foreign bodies through the nip. Alternatively, another measured value can also be analyzed and evaluated for this purpose. There is also the possibility of evaluating the hydraulic pressure at the hydraulic cylinders that act on the floating roller at high frequency. Such an evaluation can also be used to evaluate short-term fluctuations in the course of the passage of a foreign body. The evaluation result can be further improved by analyzing a first operating parameter in combination with a second operating parameter and drawing conclusions about the respective event using an algorithm. In particular, it can be expedient to combine the development of the torque with a measurement of the roll gap. In the same way, a measurement of the hydraulic pressure can be combined with the roll gap.
Ein weiteres Beispiel für die erfindungsgemäße Überwachung eines Zustandes der Walzenpresse ist die Überwachung des Verschleißzustandes der Walzenoberflächen (z.B. der Bandagen) der Hochdruck-Walzenpresse. Da der üblicherweise registrierte Walzenspalt mithilfe der Hydraulikzylinder so eingestellt wird, dass er während des Betriebes im Großen und Ganzen konstant gehalten wird, lässt sich durch die Erfassung des Walzenspaltes nicht auf den Verschleißzustand der Walzen bzw. deren Walzenoberflächen (z.B. Bandagen) schließen. Nach einem weiteren Vorschlag der Erfindung ist daher vorgesehen, dass die Position der Loswalze als Funktion der Zeit mit einem oder mit mehreren Positionssensoren aufgenommen und die Daten auf dem Analyserechner gespeichert werden. Mit einem Algorithmus kann aus den gemessenen Daten der Verschleißzustand der Walzenoberfläche bestimmt und eine Vorhersage für eine Restverwendungsdauer der Walzenoberfläche erzeugt werden. Die Positionssensoren erfassen bevorzugt die Position der Lagerstellen der Loswalze, wobei in dieser Ausführungsform eine Absolutmessung der Position der Loswalze bzw. deren Lagerstellen gemeint ist, d. h. eine Bestimmung der Position relativ zu einem ortsfesten Bezugssystem, z. B. dem Pressengestell. Während sich die Spaltweite des Pressspaltes während des Betriebes im Wesentlichen nicht ändert bzw. nicht ändern sollte, da im Zuge des Verschleißes der Walzenoberfläche/Bandage eine immer weiterere Anstellung der Loswalze gegen die Festwalze erfolgt, lässt sich der Verschleiß der Walzenoberflächen sehr einfach anhand der sich verändernden Position der Loswalze ermitteln. Denn mit zunehmendem Verschleiß der Walzenoberflächen und folglich mit abnehmendem Arbeitswalzendurchmesser wird die Loswalze immer weiter gegen die Festwalze angestellt, sodass sich die Position der Lagerstellen der Loswalze immer weiter der Position der Lagerstellen der Festwalze annähert. Die Position der Lagerstellen der Loswalze ist folglich ein gutes Maß für die Abnahme der Walzendurchmesser und damit für den Verschleißzustand der Walzenoberflächen. Mithilfe eines Algorithmus kann auf der Basis von zuvor zur Verfügung gestellten Daten bzw. Erfahrungswerten eine Vorhersage für eine Restverwendungsdauer der Walze bzw. der Walzenoberflächen erzeugt werden. Auf diese Weise können mit der Erfindung Wartungsvorhersagen (Predictive maintenance) erstellt werden.A further example of the monitoring of a state of the roller press according to the invention is the monitoring of the state of wear of the roller surfaces (eg the bandages) of the high-pressure roller press. Since the usually registered roller gap is adjusted with the help of the hydraulic cylinders in such a way that it is largely the same during operation is kept constant, it is not possible to draw conclusions about the state of wear of the rolls or their roll surfaces (e.g. drums) by recording the roll gap. According to a further proposal of the invention, it is therefore provided that the position of the floating roller is recorded as a function of time with one or more position sensors and the data is stored on the analysis computer. With an algorithm, the wear condition of the roll surface can be determined from the measured data and a forecast for a remaining service life of the roll surface can be generated. The position sensors preferably detect the position of the bearing points of the floating roller, which in this embodiment means an absolute measurement of the position of the floating roller or its bearing points, ie a determination of the position relative to a stationary reference system, e.g. B. the press frame. While the gap width of the press nip does not or should not change during operation, since the wear of the roll surface/bandage causes the floating roll to be increasingly adjusted against the fixed roll, the wear on the roll surfaces can be measured very easily using the determine the changing position of the loose roller. Because with increasing wear of the roll surfaces and consequently with decreasing work roll diameter, the loose roll is increasingly adjusted against the fixed roll, so that the position of the bearing points of the loose roll approaches the position of the bearing points of the fixed roll. The position of the bearing points of the floating roll is therefore a good measure of the decrease in roll diameter and thus of the wear condition of the roll surfaces. With the help of an algorithm, a prediction for a remaining period of use of the roller or the roller surfaces can be generated on the basis of previously made available data or empirical values. In this way, maintenance predictions (predictive maintenance) can be created with the invention.
Gegenstand der Erfindung ist nicht nur das beschriebene Verfahren, sondern auch eine Anlage zum Zerkleinern, Kompaktieren oder Brikettieren von Material gemäß Anspruch 10. Es ist folglich nicht nur das Verfahren, sondern auch die Anlage unter Schutz gestellt, die mit einem Edge-Computer der beschriebenen Art ausgerüstet ist, wobei dieser Edge-Computer mit entsprechenden Programmen für die Datenverarbeitung und/oder Algorithmen ausgerüstet ist, die zur Durchführung des beschriebenen Verfahrens eingerichtet sind.The subject matter of the invention is not only the method described, but also a system for crushing, compacting or briquetting material according to
Im Folgenden wird die Erfindung anhand von Zeichnungen näher erläutert, die lediglich Ausführungsbeispiele darstellen. Es zeigen:
- Fig.1
- schematisch stark vereinfacht eine erfindungsgemäße Anlage mit einer Walzenpresse,
- Fig. 2
- eine Darstellung des Drehmomentes und der Spaltweite als Rohdaten in Abhängigkeit von der Zeit,
- Fig. 3
- eine Darstellung der Loswalzenposition und des Verschleißzustandes zur Wartungsvorhersage.
- Fig.1
- schematically greatly simplified a system according to the invention with a roller press,
- 2
- a representation of the torque and the gap width as raw data as a function of time,
- 3
- a representation of the loose roller position and the state of wear for maintenance prediction.
In
Eine solche Walzenpresse 1 kann in üblicher Weise mit einer speicherprogrammierbaren Steuerung bzw. SPS 5 verbunden sein, die wiederum mit einer übergeordneten Anlagensteuerung bzw. einer Leitwarte 6 verbunden sein kann. Über die Leitwarte 6 kann der Betrieb der Walzenpresse 1 gesteuert und in bekannter Weise überwacht werden. Dazu kann die SPS 5 einerseits mit den Antrieben der Walzenpresse und andererseits mit verschiedenen Messwert-Aufnehmern verbunden sein.Such a roller press 1 can be connected in the usual way to a programmable logic controller or
Erfindungsgemäß ist jedoch alternativ oder zusätzlich zu der speicherprogrammierbaren Steuerung 5 ein spezieller Rechner vorgesehen, nämlich ein Edge-Computer als Analyserechner 7, der kabelgebunden über ein oder mehrere Verbindungskabel 8 mit Messwert-Aufnehmern 9 der Walzenpresse verbunden ist. Dieser Edge-Computer bzw. Analyserechner 7 ist lokal in unmittelbarer Nähe der Walzenpresse stationiert. Die mit den Messwert-Aufnehmern 9 registrierten Betriebsdaten werden als Rohdaten auf diesem Analyserechner 7 gespeichert. Dazu können die Messwert-Aufnehmer 9 mit (zusätzlichen) Messeinrichtungen bzw. Messkarten 10 ausgerüstet sein, mit denen die analogen Messdaten in digitale Betriebsdaten R umgewandelt werden. Bevorzugt können für die Verbindung der Messkarte 10 an den Analyserechner 7 optische Verbindungskabel, z.B. Lichtwellenleiter für eine besonders schnelle Datenübertragung verwendet werden. Der Analyserechner 7 ist als Edge-Computer mit großen Datenspeichern 11, Prozessoren 12 und speziell eingerichteten Algorithmen 13 für die Analyse und Auswertung der Betriebsdaten vorgesehen. Bevorzugt sind in dem Analyserechner 7 mehrere Speichermedien 11 für eine redundante Datenspeicherung vorgesehen. Die Rohdaten R werden auf dem Analyserechner 7 gespeichert und mit den Analysealgorithmen 13 ausgewertet und damit werden Kenndaten K der Walzenpresse 1 erzeugt, die ebenfalls auf dem Analyserechner gespeichert werden. Erfindungsgemäß werden diese Kenndaten K von dem Analyserechner 7 über ein drahtloses Netzwerk 14 an ein oder mehrere Endgeräte 15, z. B. PCs, Tablets, Smartphones oder dergleichen übertragen, d. h. über die Endgeräte 15 kann auf die Kenndaten K zugegriffen werden. Von besonderer Bedeutung ist dabei, dass entsprechend berechtigte Nutzer über die Endgeräte 15 nur auf die bereits ausgewerteten Kenndaten K zugreifen müssen und nicht auf die sehr umfangreichen Rohdaten. Dazu können die Kenndaten K in dem Analyserechner 7 in z. B. einer Datenbank als verdichtete Daten gespeichert werden und in der Datenbank für einen Online-Zugriff über PC, Smartphone oder dergleichen bereitgestellt werden, und zwar z. B. für entsprechende Anlagenzustandsanzeigen.According to the invention, however, a special computer is provided as an alternative or in addition to the
Dabei können die Betriebsdaten R in herkömmlicher Weise mit bekannten und gegebenenfalls ohnehin im Bereich der Walzenpresse vorgesehenen Messwert-Aufnehmern 9 aufgenommen werden, und zwar z. B. das Drehmoment einer Presswalze oder beider Presswalzen, der Hydraulikdruck der Hydraulikzylinder für die Beaufschlagung der Loswalze, Positionssensoren für die Bestimmung des variablen Walzenspaltes, Positionssensoren für die Bestimmung der Absolutposition der Loswalze bzw. der Position der Loswalze relativ zu dem ortsfesten Pressengestell, Wägezellen, Temperatursensoren, Durchflusssensoren oder dergleichen. Über die Endgeräte 15 kann z. B. in einfacher Weise der jeweilige Zustand der Walzenpresse 1 bzw. Werte der genannten Sensoren 9 in verdichteter Form angezeigt werden, sodass ein aktueller Maschinenstatus visualisierbar ist. Alternativ können statistische Auswertungen auf dem Endgerät 15 abgefragt werden, die jedoch nicht auf dem Endgerät 15, sondern auf dem Analyserechner 7 erzeugt werden, z. B. individuelle Wochenberichte, Monatsberichte oder dergleichen. Besonders bevorzugt können mit dem erfindungsgemäßen Verfahren jedoch Störzustände, außergewöhnliche Zustände oder dergleichen überwacht werden.In this case, the operating data R can be recorded in a conventional manner using known measured value sensors 9 that are optionally provided in the area of the roller press anyway, namely, for example, B. the torque of a press roller or both press rollers, the hydraulic pressure of the hydraulic cylinder for the loading of the floating roller, position sensors for determining the variable nip, position sensors for the Determination of the absolute position of the floating roller or the position of the floating roller relative to the stationary press frame, load cells, temperature sensors, flow rate sensors or the like. About the terminals 15 z. B. in a simple manner, the respective state of the roller press 1 or values of the sensors 9 mentioned are displayed in a condensed form, so that a current machine status can be visualized. Alternatively, statistical evaluations can be queried on
Dazu ist es besonders vorteilhaft, wenn die Betriebsdaten als Rohdaten R mit einer hohen Abtastrate von mehr als 100 Hz, z. B. mehr als 200 Hz aufgenommen und auf dem Analyserechner 7 gespeichert werden. Dadurch entstehen große Datenmengen, die jedoch kabelgebunden über kurze Distanzen unmittelbar an den lokal positionierten Analyserechner 7 übertragen und dort gespeichert und bereits ausgewertet werden. Aus den sehr großen Datenmengen werden durch die bereits erwähnten Analysealgorithmen 13 die gewünschten Kenndaten bzw. Kennwerte K erzeugt, auf die schließlich mit den Endgeräten 15 über das drahtlose Netzwerk 14, z. B. über das Internet zugegriffen werden kann.For this purpose, it is particularly advantageous if the operating data is raw data R with a high sampling rate of more than 100 Hz, e.g. B. recorded more than 200 Hz and stored on the
Dabei ist in
In
Schließlich ist angedeutet, dass von dem Analyserechner 7 auch Daten, Befehle oder dergleichen an die Walzenpresse 1 oder andere Komponenten der Anlage übermittelt werden können. So können z. B. die ausgewerteten Kenndaten für eine Steuerung oder Regelung der Presse oder anderer Maschinen verwendet werden.Finally, it is indicated that data, commands or the like can also be transmitted from the
Beispiele für bevorzugte Anwendungen der beschriebenen Anlage bzw. des beschriebenen Verfahrens sollen anhand der
So können gemäß
Eine weitere Anwendungsmöglichkeit betrifft Verschleißüberwachungen bzw. Wartungsvorhersagen, z. B. die Überwachung des Verschleißes der Bandagen der Walzenpresse. Dazu wird z. B. die Absolutposition der Loswalze 3b mit einem oder mehreren Positionssensoren überwacht. Als Position der Loswalze 3b ist die Position der Loswalze relativ zu einem ortsfesten Pressengestell 2 bezeichnet. Dazu können z. B. Positionssensoren im Bereich der Lagerstellen der Loswalze angeordnet sein. In
Claims (10)
- Method of monitoring a high-pressure roller press (1) during the course of comminution, compacting or briquetting of material,wherein the roller press (1) comprises two rotating driven press rollers (3a, 3b), between which a roller gap is formed, the gap width of which is changeable during operation,wherein during operation, with one or more measurement elements (9), operating data of the roller press (1) are determined and saved on a computer,characterised inthat the operating data are stored as raw data (R) on an edge computer as an analysis computer (7) arranged locally in the area of the roller press (1) and connected to the measurement elements (9),that the raw data (R) are evaluated on the analysis computer (7) with analysis algorithms and thereby characteristics (K) of the roller press (1) are produced and these characteristics (K) are stored on the analysis computer (7),wherein the characteristics (K) are transmitted from the analysis computer (7) via a wireless network (14) to at least one terminal device (15) and are displayed on the terminal device (15).
- Method according to claim 1, characterised in that the analysis computer (7) or edge computer is wire-connected with at least one connection cable (8) to the measurement element(s) (9) arranged on the roller press (1), wherein preferably fibre optic cables are used.
- Method according to claim 1 or 2, characterised in that the operating data are recorded as raw data (R) with a high sampling rate of more than 50 Hz, e.g. more than 100 Hz, preferably at least 200 Hz, and stored on the analysis computer (7).
- Method according to any one of claims 1 to 3, characterised in that the torque of a press roller (3a, 3b) or both press rollers (3a, 3b) is recorded and stored as operating data.
- Method according to any one of claims 1 to 4, characterised in that the hydraulic pressure on the force-generating means of a press roller (3a, 3b) is recorded and stored as operating data and/or in that the gap width of the roller gap and/or the absolute position of a press roller (3a, 3b) is/are recorded and stored as operating data.
- Method according to any one of claims 1 to 5, characterised in that the measurements of different measurement elements (9) are recorded and saved as raw data, wherein the characteristics (K) are evaluated and saved with the analysis algorithms using different operating data of several measurement elements (9).
- Method according to any one of claims 1 to 6 for monitoring a foreign body passing through the roller gap, characterised in that operating data are recorded which change as a function of time during the passage of a foreign body through the roller gap, e.g. torque and/or gap width and/or pressure, and in that with an analysis algorithm foreign body passages are determined from the operating data.
- Method according to any one of claims 1 to 7, characterised in that with the terminal device (15), e.g. a PC, notebook, tablet computer, smart phone or suchlike, a router (16) connected to the analysis computer (7) is accessed, preferably a portal connected to the router (16) via a VPN connection (17).
- Method according to any one of claims 1 to 8 characterised in that the characteristics (K) for controlling or regulating the roller press (1) or another machine within an industrial plant, e.g. a grinding plant, compacting plant, briquetting plant, into which the roller press (1) is integrated, are used.
- Plant for comminuting, compacting or briquetting material with a method according to any one of claims 1 to 9 with at leasta roller press (1) which comprises two rotating, driven press rollers (3a, 3b), between which a roller gap is formed, the gap width of which is changeable during operation,one or more measurement elements (9) with which operating data of the roller press (1) can be determined,and an edge computer as analysis computer (7) locally positioned in the area of the roller press (1) and connected with the roller press (1) or with the measurement elements (9),wherein the operating data can be stored as raw data (R) on the edge computer and wherein the raw data (R) can be used with analysis algorithms on the analysis computer (7) and thereby characteristics (K) of the roller press (1) can be produced and these characteristics (K) can be stored on the analysis computer (7), whereby the characteristics (K) can be transmitted from the analysis computer (7) via a wireless network (14) to at least one terminal device (15) and displayed on the terminal device.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020114815.1A DE102020114815A1 (en) | 2020-06-04 | 2020-06-04 | Method for monitoring a high pressure roller press |
PCT/EP2021/064345 WO2021244966A1 (en) | 2020-06-04 | 2021-05-28 | Method for monitoring a high-pressure roller press |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3972737A1 EP3972737A1 (en) | 2022-03-30 |
EP3972737B1 true EP3972737B1 (en) | 2023-05-31 |
Family
ID=76305890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21730515.0A Active EP3972737B1 (en) | 2020-06-04 | 2021-05-28 | Method for monitoring a high-pressure roller grinder |
Country Status (8)
Country | Link |
---|---|
US (1) | US20230158766A1 (en) |
EP (1) | EP3972737B1 (en) |
KR (1) | KR20230021079A (en) |
DE (1) | DE102020114815A1 (en) |
DK (1) | DK3972737T3 (en) |
FI (1) | FI3972737T3 (en) |
MX (1) | MX2022015281A (en) |
WO (1) | WO2021244966A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4226182A1 (en) | 1992-08-07 | 1994-02-10 | Kloeckner Humboldt Deutz Ag | Hydraulically powered twin roller mill for granular raw materials - has feed unit with controlled flaps adjustable to suit measured gap between rollers |
US20050049801A1 (en) | 1996-07-05 | 2005-03-03 | Stefan Lindberg | Analysis system |
DE102011018705A1 (en) | 2011-04-26 | 2012-10-31 | Khd Humboldt Wedag Gmbh | Method for regulating the nip pressure of a roller press |
EP2724779A1 (en) | 2012-10-29 | 2014-04-30 | Metso Minerals Industries, Inc. | Monitoring device for a roller crusher |
DE102007004004B4 (en) | 2007-01-26 | 2016-09-01 | Thyssenkrupp Industrial Solutions Ag | rolling mill |
WO2018036978A1 (en) | 2016-08-22 | 2018-03-01 | Bühler AG | Monitoring and control device for the automated optimization of the grinding line of a roller system and corresponding method |
WO2020064898A1 (en) | 2018-09-27 | 2020-04-02 | Thyssenkrupp Industrial Solutions Ag | Method and system for maintaining a production plant |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10106856A1 (en) | 2001-02-14 | 2002-09-05 | Koeppern & Co Kg Maschf | Operating material bed crushing high pressure roller press involves measuring drive and moving parameters of roller, forming ratio of these values and keeping ratio constant |
US7182283B1 (en) * | 2004-12-17 | 2007-02-27 | Engineering Consultants Group, Inc. | Pulverizer real-time monitoring system |
DE102005040978A1 (en) | 2005-08-29 | 2007-03-08 | Bühler AG | Method for monitoring the operating state of rotating rolls in an industrial plant |
DE102008046921B4 (en) | 2008-09-12 | 2010-06-17 | Polysius Ag | Method for monitoring the load condition of a grinding plant and grinding plant with monitoring device |
CN104549704A (en) * | 2014-12-30 | 2015-04-29 | 杭州胄天新能源技术有限公司 | Rolling machine state monitoring system for cement industry |
CN109313440A (en) | 2016-05-16 | 2019-02-05 | 伟尔矿物澳大利亚私人有限公司 | Machine monitors |
CN207887239U (en) * | 2017-10-24 | 2018-09-21 | 成都利君实业股份有限公司 | A kind of wireless roll squeezer automatic control system |
WO2019086577A1 (en) * | 2017-11-02 | 2019-05-09 | Flsmidth A/S | Wear detection apparatus for a comminution device |
-
2020
- 2020-06-04 DE DE102020114815.1A patent/DE102020114815A1/en active Pending
-
2021
- 2021-05-28 KR KR1020237000225A patent/KR20230021079A/en unknown
- 2021-05-28 WO PCT/EP2021/064345 patent/WO2021244966A1/en active Application Filing
- 2021-05-28 EP EP21730515.0A patent/EP3972737B1/en active Active
- 2021-05-28 US US17/919,979 patent/US20230158766A1/en active Pending
- 2021-05-28 FI FIEP21730515.0T patent/FI3972737T3/en active
- 2021-05-28 DK DK21730515.0T patent/DK3972737T3/en active
- 2021-05-28 MX MX2022015281A patent/MX2022015281A/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4226182A1 (en) | 1992-08-07 | 1994-02-10 | Kloeckner Humboldt Deutz Ag | Hydraulically powered twin roller mill for granular raw materials - has feed unit with controlled flaps adjustable to suit measured gap between rollers |
US20050049801A1 (en) | 1996-07-05 | 2005-03-03 | Stefan Lindberg | Analysis system |
DE102007004004B4 (en) | 2007-01-26 | 2016-09-01 | Thyssenkrupp Industrial Solutions Ag | rolling mill |
DE102011018705A1 (en) | 2011-04-26 | 2012-10-31 | Khd Humboldt Wedag Gmbh | Method for regulating the nip pressure of a roller press |
EP2724779A1 (en) | 2012-10-29 | 2014-04-30 | Metso Minerals Industries, Inc. | Monitoring device for a roller crusher |
WO2018036978A1 (en) | 2016-08-22 | 2018-03-01 | Bühler AG | Monitoring and control device for the automated optimization of the grinding line of a roller system and corresponding method |
WO2020064898A1 (en) | 2018-09-27 | 2020-04-02 | Thyssenkrupp Industrial Solutions Ag | Method and system for maintaining a production plant |
Non-Patent Citations (2)
Title |
---|
ANONYMOUS: "ibaDAQ - Zentraleinheit für stand-alone Datenerfassung - Handbuch Ausgabe 1.0.1", HANDBUCH IBADAQ, IBA AG, 1 January 2019 (2019-01-01), pages 1 - 68, XP093168841, Retrieved from the Internet <URL:http://www.iba-ag.com> |
ANONYMOUS: "POLYCOM high-pressure grinding roll", PRODUCT SPECIFICATIONS, THYSSENKRUPP INDUSTRIAL SOLUTIONS AG, 1 January 2016 (2016-01-01), pages 1 - 12, XP093167690, Retrieved from the Internet <URL:https://ucpcdn.thyssenkrupp.com/_legacy/UCPthyssenkruppBAIS/assets.files/products___services/mineral_processing/griding_plants/polycom_en.pdf> |
Also Published As
Publication number | Publication date |
---|---|
MX2022015281A (en) | 2023-01-19 |
KR20230021079A (en) | 2023-02-13 |
DE102020114815A1 (en) | 2021-12-09 |
DK3972737T3 (en) | 2023-08-07 |
WO2021244966A1 (en) | 2021-12-09 |
US20230158766A1 (en) | 2023-05-25 |
FI3972737T3 (en) | 2023-08-21 |
EP3972737A1 (en) | 2022-03-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102011018705B4 (en) | Method for controlling the nip pressure of a roller press and roller press | |
WO2018036978A1 (en) | Monitoring and control device for the automated optimization of the grinding line of a roller system and corresponding method | |
WO2018149879A1 (en) | Data interface device for use on a numerically controlled machine tool | |
EP3052239B1 (en) | Method for operating a system comprising at least a device having a rotating surface | |
DE102016217443A1 (en) | Data storage device for use on a numerically controlled machine tool | |
DE102016000387A1 (en) | Method for regulating the operation of a stripping device on a conveyor belt | |
EP2334454B1 (en) | Arrangement and method for detecting an operational state of a strand guide | |
EP2435349A1 (en) | Monitoring system and apparatus comprising such a monitoring system | |
WO2000035628A1 (en) | Grinding process control method and computer-aided control for wide grinding machines | |
EP3972737B1 (en) | Method for monitoring a high-pressure roller grinder | |
DE102020114835B4 (en) | Method for monitoring a high-pressure roller press | |
WO2015144586A1 (en) | Roller press | |
EP3589786B1 (en) | Method for operating a paper machine, drive system and paper machine | |
EP3792709A1 (en) | Device for analysing the noises created by a machine tool during operation | |
EP3286375B1 (en) | Method for monitoring a sealing device and sealing device | |
EP3890955B1 (en) | Continuously operating press having closed-loop raw density profile control | |
EP2302242B1 (en) | Method and device for conditioning bearing systems for shafts | |
DE102020205088A1 (en) | Method and evaluation system for monitoring tool wear on tool components in machining production plants | |
DE102013224626A1 (en) | Arrangement and method for detecting an operating state | |
DE102007002008A1 (en) | Closure unit for closing a metal tin comprises a measuring device arranged in the power flow between the outlet of a drive unit and active site on closing levers | |
DE102018216574A1 (en) | Process and system for maintenance of a production plant | |
DE19839162B4 (en) | Method for adjusting the roll gap in size reduction mills | |
EP4403262A1 (en) | Rock processing machine with wear assessment and qualitative assessment of wear assessment | |
EP3582051A1 (en) | Comprehensive fault analysis for control devices and industrial technical installations | |
EP3772377A1 (en) | Disk vibration mill with sensor system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20211221 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
INTG | Intention to grant announced |
Effective date: 20230223 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1570625 Country of ref document: AT Kind code of ref document: T Effective date: 20230615 Ref country code: DE Ref legal event code: R096 Ref document number: 502021000725 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 Effective date: 20230731 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: FP |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230831 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502021000725 Country of ref document: DE Owner name: MASCHINENFABRIK KOEPPERN GMBH & CO. KG, DE Free format text: FORMER OWNER: MASCHINENFABRIK KOEPPERN GMBH & CO. KG, 45529 HATTINGEN, DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230930 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230901 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231002 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R026 Ref document number: 502021000725 Country of ref document: DE |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
26 | Opposition filed |
Opponent name: TAKRAF GMBH Effective date: 20240229 Opponent name: THYSSENKRUPP POLYSIUS GMBH Effective date: 20240227 |
|
R26 | Opposition filed (corrected) |
Opponent name: TAKRAF GMBH Effective date: 20240229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230531 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 20240522 Year of fee payment: 4 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20240521 Year of fee payment: 4 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240325 Year of fee payment: 4 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20240527 Year of fee payment: 4 |
|
PLBB | Reply of patent proprietor to notice(s) of opposition received |
Free format text: ORIGINAL CODE: EPIDOSNOBS3 |