CN116832941A - Single-slow-drive device control system of mill and InCS intelligent control method - Google Patents
Single-slow-drive device control system of mill and InCS intelligent control method Download PDFInfo
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- CN116832941A CN116832941A CN202310846594.7A CN202310846594A CN116832941A CN 116832941 A CN116832941 A CN 116832941A CN 202310846594 A CN202310846594 A CN 202310846594A CN 116832941 A CN116832941 A CN 116832941A
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- 238000004891 communication Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000005484 gravity Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000005065 mining Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
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Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention belongs to the technical field of mills, and discloses a control system of a single slow-driving device of a mill and an InCS intelligent control method; the control system of the mill single slow-driving device comprises a touch screen, a slow-driving variable frequency motor, a slow-driving motor frequency converter, a slow-driving motor encoder, an intelligent control cabinet, a braking resistance cabinet, a slow-driving clutch and a clutch hydraulic station; according to the control system of the single and slow driving device of the mill, counter moment output by the frequency converter is monitored in real time during tooth removal, the rotation angle value of the mill is calculated through the inside, the gravity center of the mill is controlled to slowly fall back in an energy consumption braking mode, and finally self-balancing shutdown of the mill is realized, and tooth removal is realized through one key; the automatic mill balance stop and one-key tooth removal functions are realized conveniently, the operation is convenient, the overhaul stop time is reduced, and the production and maintenance cost is reduced.
Description
Technical Field
The invention belongs to the technical field of mills, and particularly relates to a single-slow-drive device control system of a mill and an InCS intelligent control method.
Background
The grinding operation is an important production link of a concentrating mill, the working state of the mining mill directly influences the efficiency and the yield of the subsequent process, and the existing production and maintenance of the mill also depend on a large amount of manual operation, so that the maintenance time is long, equipment cannot be fully utilized, and the production efficiency is low. In recent years, a slow driving device of a domestic large-scale mining double-driving mill generally adopts a double-hydraulic motor driving mode.
Because the shutdown state of the slow-driving device of the double-driving mill is difficult to shutdown at the lowest point of the gravity center, the problem of difficult tooth disengagement of the slow-driving clutch is caused, an experienced operator is required to repeatedly adjust the gravity center of the mill for many times on site, tooth disengagement can be realized until the lowest point is stopped, the maintenance time is directly prolonged, and the production progress requirement of a factory is influenced.
Therefore, a control system of a single slow-driving device of a mill and an intelligent control method of an InCS, which are convenient to operate, reduce maintenance downtime and reduce production and maintenance cost, are needed to solve the technical problems faced at present.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the control system of the single slow-driving device of the mill and the intelligent control method of the InCS, which are convenient to operate, reduce maintenance downtime and reduce production and maintenance cost.
The technical scheme of the invention is as follows: the control system of the single slow-driving device of the mill comprises a touch screen, a slow-driving variable frequency motor, a slow-driving motor frequency converter, a slow-driving motor encoder, an intelligent control cabinet, a braking resistance cabinet, a slow-driving clutch and a clutch hydraulic station;
the intelligent control cabinet comprises a control module, the slow-driving motor frequency converter is in communication connection with the control module by adopting a Profinet protocol, the slow-driving motor encoder is connected with a high-speed pulse input end of the control module, an output end of the control module is connected with the clutch hydraulic station, and the clutch hydraulic station receives a control signal output by the control module to control the slow-driving clutch to act;
the slow-driving motor encoder is in transmission connection with the slow-driving variable frequency motor, and the output end of the slow-driving motor frequency converter is connected with the slow-driving variable frequency motor;
the pressure sensor is connected with the control module and used for detecting the pressure value in the disengaging and engaging processes of the slow-driving clutch;
a braking resistor is arranged in the braking resistor cabinet and is connected with the slow-driving motor frequency converter;
the touch screen is in communication connection with the control module.
The PLC control module is connected with a Profinet master station, the slow-driving motor frequency converter is connected with a Profinet slave station, and the Profinet master station is connected with the Profinet slave station in a communication mode.
And the output end of the PLC control module is connected with an intermediate relay, and the intermediate relay is connected with the clutch hydraulic station.
The control system of the mill single slow driving device further comprises a remote control device, wherein the PLC control module is connected with a remote control receiving device, and the remote control receiving device is matched with the remote control device.
The control module is a PLC control module.
The control module is connected with a network switch.
The InCS intelligent control method of the mill single slow driving device comprises a balanced parking control method, wherein the balanced parking control method comprises the following steps of:
s1, defining a balance interval range of a mill according to mill specifications and simulation tests;
s2, according to different conditions of 10-100% load of the mill, monitoring and counting a torque value set in a corresponding mill balance interval range under different load conditions;
s3, respectively calculating minimum torque threshold values in the balance interval range under different load conditions by using a minimum function according to the torque value set obtained in the step S2;
s4, repeating the step S2 and the step S3, calculating out minimum torque threshold values in the range of the balance interval under at least ten groups of different load conditions by using the same method, and taking the average value as the minimum torque threshold value under the corresponding load condition;
s5, taking the minimum torque threshold value of the balancing area under different load conditions as a torque set value under corresponding load conditions;
and S6, comparing the torque of the slow-drive variable frequency motor with a torque set value under the condition of corresponding load, and when the torque of the slow-drive variable frequency motor is smaller than or equal to the torque set value under the condition of corresponding load, regarding the torque to reach the lowest point of the mill, so as to realize balanced shutdown of the lowest point of the mill.
The InCS intelligent control method of the mill single-slow-drive device comprises a tooth removal control method, wherein the tooth removal control method comprises the following steps of:
s1, realizing balanced parking of the lowest point of the mill by adopting the balanced parking control method;
s2, detecting a pressure value F required by tooth release of the slow-drive clutch, and calculating a rotation angle alpha corresponding to a tooth width distance of the slow-drive clutch rotated by the tooth width of the mill in a minimum balance interval according to the tooth width of the slow-drive clutch;
s3, acquiring pressure values in the gear engagement and disengagement process of the slow-drive clutch through a pressure sensor;
s4, the control module sends a tooth removing instruction to the clutch hydraulic station, and if the tooth is removed, the tooth removing process is completed; if the tooth is not removed, executing the step S5;
s5, the slow-drive variable frequency motor drives the slow-drive clutch to rotate forward by alpha, then the control module sends a tooth removing instruction to the clutch hydraulic station, and tooth removing is completed if tooth removing is performed; if the tooth is not removed and the pressure value in the slow-driving clutch is larger than F, executing step S6;
s6, the slow-driving variable frequency motor drives the slow-driving clutch to reversely rotate by 2 alpha, and then the control module sends a tooth-removing instruction to the clutch hydraulic station.
And S4, repeating the step S2 and the step S3, and calculating to obtain the minimum torque threshold value in the range of the balance interval under ten groups of different loads by using the same method.
The invention has the beneficial effects that:
(1) According to the control system of the single and slow driving device of the mill, counter moment output by the frequency converter is monitored in real time during tooth removal, the rotation angle value of the mill is calculated through the inside, the gravity center of the mill is controlled to slowly fall back in an energy consumption braking mode, and finally self-balancing shutdown of the mill is realized, and tooth removal is realized through one key; the automatic mill balance stop and one-key tooth removal functions are realized conveniently, the operation is convenient, the overhaul stop time is reduced, and the production and maintenance cost is reduced;
(2) The touch screen can display the disengaging or engaging position of the clutch, the running state, running parameters and brake state of the slow-driving variable-frequency motor, alarm and fault information, can display running data trend graphs and store relevant data, and can also inquire relevant parameters, set and modify the relevant parameters;
(3) The braking resistor is connected with the frequency converter of the slow-driving motor and is used for realizing an energy consumption braking mode of the mill;
(4) After the intelligent control method of the InCS of the single-slow-drive device of the mill is debugged, the minimum zone of slow-drive balanced parking can be automatically searched, and the minimum point balanced parking of the mill is realized.
Drawings
FIG. 1 is a schematic block diagram of a mill single slow drive control system in accordance with the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative, and is in no way intended to limit the invention, its application, or uses. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.
The terms "first," "second," and the like, as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
As shown in fig. 1, the control system of the mill single slow-driving device comprises a touch screen 12, a slow-driving variable frequency motor 3, a slow-driving motor frequency converter 2, a slow-driving motor encoder 4, an intelligent control cabinet 1, a braking resistance cabinet 5, a slow-driving clutch 61 and a clutch hydraulic station 6; the intelligent control cabinet 1 comprises a control module 11, a slow-driving motor frequency converter 2 is in communication connection with the control module 11 by adopting a Profinet protocol, a slow-driving motor encoder 4 is connected with a high-speed pulse input end of the control module 11, an output end of the control module 11 is connected with a clutch hydraulic station 6, and the clutch hydraulic station 6 receives a control signal output by the control module 11 to control a slow-driving clutch 62 to act; the slow-driving motor encoder 4 is in transmission connection with the slow-driving variable frequency motor 3, and the output end of the slow-driving motor frequency converter 2 is connected with the slow-driving variable frequency motor 3; the slow-driving clutch 61 is connected with a pressure sensor 62 for detecting the pressure value in the process of disengagement and engagement, and the pressure sensor 62 is connected with the control module 11; a brake resistor is arranged in the brake resistor cabinet 5 and is connected with the slow-drive motor frequency converter 2; the touch screen 12 is in communication with the control module 11.
In the above embodiment, the PLC control module 11 in the intelligent control cabinet 1 is connected with the slow-driving motor frequency converter 2 and the slow-driving motor encoder 4 in a communication manner, so that key parameters such as the rotation speed, torque, current, running state and the like of the slow-driving variable-frequency motor 3 can be monitored, and the slow-driving variable-frequency motor 3 can be accurately positioned and controlled in rotation angle without manual repeated speed regulation; setting a inching rotating speed special for the counter teeth when the counter teeth are opposite, and immediately stopping the motor when an operator observes proper angles in the process of counter teeth, wherein the lower counter teeth speed reserves enough reaction time for the operator, so that the phenomenon of excessive rotation of the clutch is avoided; during tooth removal, counter moment output by the frequency converter is monitored in real time, a rotation angle value of the mill is calculated through the inside, the gravity center of the mill is controlled to slowly fall back in an energy consumption braking mode, and finally self-balancing shutdown of the mill is realized, and tooth removal is realized through one key; the automatic mill balance stop and one-key tooth removal functions are realized conveniently, the operation is convenient, the overhaul stop time is reduced, and the production and maintenance cost is reduced; the touch screen 12 can display the disengaging or engaging position of the clutch, the running state, running parameters and brake state of the slow-driving variable frequency motor 3, alarm and fault information, can display running data trend graphs and store relevant data, and can also inquire relevant parameters, set and modify the relevant parameters on the touch screen 12; the braking resistor is connected with the frequency converter of the slow-driving motor and is used for realizing an energy consumption braking mode of the mill.
In some embodiments, as a specific implementation manner of adopting a Profinet protocol communication connection between the PLC controller 11 and the slow-driving motor frequency converter 2, a Profinet master station 14 is connected to the PLC control module 11, and a Profinet slave station 7 is connected to the slow-driving motor frequency converter 2, and the Profinet master station 14 is in communication connection with the Profinet slave station 7.
In some embodiments, the output end of the PLC control module 11 is connected with an intermediate relay 16, the intermediate relay 16 is connected with the clutch hydraulic station 6, wherein the clutch hydraulic station 6 is used for controlling the moving state of the clutch, the output state of the output end of the intermediate relay is controlled by the PLC control module 11, the on-off of the intermediate relay 16 is controlled, and the clutch hydraulic station 6 is indirectly controlled, so that the state control of the hydraulic clutch is realized.
In some embodiments, the mill single slow-driving device control system further comprises a remote control device 8, the PLC control module 11 is connected with a remote control receiving device 15, the remote control receiving device 15 is matched with the remote control device 8, and the mill single slow-driving device control system can be controlled remotely through the remote control device 8.
In some embodiments, the control module 11 is a PLC control module.
In some embodiments, the PLC control module 11 is connected to a network switch 13, and the network switch 13 can enable communication between the mill single slow driving device control system and external equipment.
In some embodiments, an InCS intelligent control method for a mill single slow drive device is disclosed.
The InCS intelligent control method of the mill single slow driving device comprises a balanced parking control method, wherein the balanced parking control method comprises the following steps of:
s1, defining a balance interval range of a mill according to mill specifications and simulation tests;
s2, according to different conditions of 10-100% load of the mill, monitoring and counting a torque value set in a corresponding mill balance interval range under different load conditions;
s3, respectively calculating minimum torque threshold values in the balance interval range under different load conditions by using a minimum function according to the torque value set obtained in the step S2;
s4, repeating the step S2 and the step S3, calculating out minimum torque threshold values in the range of the balance interval under at least ten groups of different load conditions by using the same method, and taking the average value as the minimum torque threshold value under the corresponding load condition;
s5, taking the minimum torque threshold value of the balancing area under different load conditions as a torque set value under corresponding load conditions;
and S6, comparing the torque of the slow-drive variable frequency motor with a torque set value under the condition of corresponding load, and when the torque of the slow-drive variable frequency motor is smaller than or equal to the torque set value under the condition of corresponding load, regarding the torque to reach the lowest point of the mill, so as to realize balanced shutdown of the lowest point of the mill.
In step S2, under the conditions of 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100% of the loads of the mills, the sets of torque values in the range of the mill balance interval corresponding to the different loads are monitored and counted, and the loads of the mills 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100% correspond to the sets of torque values A1, a set of torque values A2, a set of torque values A3, a set of torque values A4, a set of torque values A5, a set of torque values A6, a set of torque values A7, a set of torque values A8, a set of torque values A9, a set of torque values a10; in step S3, the minimum torque threshold value x in the balance interval range under different loads is calculated by using the minimum function according to the torque value sets A1-A10 1 ～x 10 The method comprises the steps of carrying out a first treatment on the surface of the In step S4, the minimum torque threshold x in the balance interval range corresponding to the load of ten groups of mills 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100% is calculated by repeating the above steps S2 and S3 by the same method 1 ～x 10 Averaging to obtain
In some embodiments, when the lowest point of the mill in an ideal state is balanced and stopped, the gravity center of the material in the mill cylinder is at the lowest point, and at the moment, the control module sends a tooth removing instruction to the clutch hydraulic station, so that tooth removing can be successfully completed; in the actual running process, the mill always exceeds or does not reach the lowest point balance stop under the ideal state, the moment of the materials in the cylinder acts on the gear of the slow-driving clutch 61, the friction between the gears is increased, and the difficulty is brought to tooth removal; in order to solve the technical problem, the embodiment provides an InCS intelligent control method of a single-slow-drive device of a mill, comprising a tooth removal control method.
The tooth removal control method comprises the following steps:
s1, realizing balanced parking of the lowest point of the mill by adopting a balanced parking control method;
s2, detecting a pressure value F required by tooth release of the slow-drive clutch, and calculating a rotation angle alpha corresponding to a tooth width distance of the slow-drive clutch rotated by the tooth width of the mill in a minimum balance interval according to the tooth width of the slow-drive clutch;
s3, acquiring pressure values in the gear engagement and disengagement process of the slow-drive clutch through a pressure sensor;
s4, the control module sends a tooth removing instruction to the clutch hydraulic station, and if the tooth is removed, the tooth removing process is completed; if the tooth is not removed, executing the step S5;
s5, the slow-drive variable frequency motor drives the slow-drive clutch to rotate forward by alpha, then the control module sends a tooth removing instruction to the clutch hydraulic station, and tooth removing is completed if tooth removing is performed; if the tooth is not removed and the pressure value in the slow-driving clutch is larger than F, executing step S6;
s6, the slow-driving variable frequency motor drives the slow-driving clutch to reversely rotate for 2 alpha, and then the control module sends a tooth-removing instruction to the clutch hydraulic station;
the pressure value F required by the tooth release of the slow-driving clutch can be obtained through limited times of test detection in the debugging process, but the pressure value F required by the tooth release of the slow-driving clutch is a certain value, and the pressure values F required by the tooth release of the slow-driving clutches of different specifications of clutch hydraulic stations 6 or different specifications of grinding machines can be different.
Thus, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concepts of the invention, some details known in the art have not been described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
The above examples only represent some embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. A mill singly slowly drives device control system which characterized in that: the device comprises a touch screen, a slow-driving variable frequency motor, a slow-driving motor frequency converter, a slow-driving motor encoder, an intelligent control cabinet, a braking resistance cabinet, a slow-driving clutch and a clutch hydraulic station; the intelligent control cabinet comprises a control module, the slow-driving motor frequency converter is in communication connection with the control module by adopting a Profinet protocol, the slow-driving motor encoder is connected with a high-speed pulse input end of the control module, an output end of the control module is connected with the clutch hydraulic station, and the clutch hydraulic station receives a control signal output by the control module to control the slow-driving clutch to act; the slow-driving motor encoder is in transmission connection with the slow-driving variable frequency motor, and the output end of the slow-driving motor frequency converter is connected with the slow-driving variable frequency motor; the pressure sensor is connected with the control module and used for detecting the pressure value in the disengaging and engaging processes of the slow-driving clutch; a braking resistor is arranged in the braking resistor cabinet and is connected with the slow-driving motor frequency converter; the touch screen is in communication connection with the control module.
2. The mill single slow drive control system of claim 1, wherein: the PLC control module is connected with a Profinet master station, the slow-driving motor frequency converter is connected with a Profinet slave station, and the Profinet master station is connected with the Profinet slave station in a communication mode.
3. The mill single slow drive control system of claim 1, wherein: and the output end of the PLC control module is connected with an intermediate relay, and the intermediate relay is connected with the clutch hydraulic station.
4. The mill single slow drive control system of claim 1, wherein: the remote control device is characterized by further comprising a remote control device, wherein the PLC control module is connected with a remote control receiving device, and the remote control receiving device is matched with the remote control device.
5. The mill single slow drive control system of claim 1, wherein: the control module is a PLC control module.
6. The mill single slow drive control system of claim 1, wherein: the control module is connected with a network switch.
7. The intelligent control method for the InCS of the single slow-driving device of the mill is characterized by comprising a balanced parking control method, wherein the balanced parking control method comprises the following steps of:
s1, defining a balance interval range of a mill according to mill specifications and simulation tests;
s2, according to different conditions of 10-100% load of the mill, monitoring and counting a torque value set in a corresponding mill balance interval range under different load conditions;
s3, respectively calculating minimum torque threshold values in the balance interval range under different load conditions by using a minimum function according to the torque value set obtained in the step S2;
s4, repeating the step S2 and the step S3, calculating out minimum torque threshold values in the range of the balance interval under at least ten groups of different load conditions by using the same method, and taking the average value as the minimum torque threshold value under the corresponding load condition;
s5, taking the minimum torque threshold value of the balancing area under different load conditions as a torque set value under corresponding load conditions;
and S6, comparing the torque of the slow-drive variable frequency motor with a torque set value under the condition of corresponding load, and when the torque of the slow-drive variable frequency motor is smaller than or equal to the torque set value under the condition of corresponding load, regarding the torque to reach the lowest point of the mill, so as to realize balanced shutdown of the lowest point of the mill.
8. The InCS intelligent control method of a mill single slow drive device of claim 7, comprising a tooth removal control method comprising the steps of:
s1, realizing balanced parking of the lowest point of the mill by adopting the balanced parking control method;
s2, detecting a pressure value F required by tooth release of the slow-drive clutch, and calculating a rotation angle alpha corresponding to a tooth width distance of the slow-drive clutch rotated by the tooth width of the mill in a minimum balance interval according to the tooth width of the slow-drive clutch;
s3, acquiring pressure values in the gear engagement and disengagement process of the slow-drive clutch through a pressure sensor;
s4, the control module sends a tooth removing instruction to the clutch hydraulic station, and if the tooth is removed, the tooth removing process is completed; if the tooth is not removed, executing the step S5;
s5, the slow-drive variable frequency motor drives the slow-drive clutch to rotate forward by alpha, then the control module sends a tooth removing instruction to the clutch hydraulic station, and tooth removing is completed if tooth removing is performed; if the tooth is not removed and the pressure value in the slow-driving clutch is larger than F, executing step S6;
s6, the slow-driving variable frequency motor drives the slow-driving clutch to reversely rotate by 2 alpha, and then the control module sends a tooth-removing instruction to the clutch hydraulic station.
9. The InCS intelligent control method of the mill single-slow-drive device according to claim 7, wherein the step S4 is repeated with the step S2 and the step S3, and the minimum torque threshold value in the range of the balance interval under ten groups of different loads is calculated by using the same method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310846594.7A CN116832941A (en) | 2023-07-11 | 2023-07-11 | Single-slow-drive device control system of mill and InCS intelligent control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310846594.7A CN116832941A (en) | 2023-07-11 | 2023-07-11 | Single-slow-drive device control system of mill and InCS intelligent control method |
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