CN110531139B - Current monitoring system of mobile crushing and screening station and control method - Google Patents
Current monitoring system of mobile crushing and screening station and control method Download PDFInfo
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- CN110531139B CN110531139B CN201910799321.5A CN201910799321A CN110531139B CN 110531139 B CN110531139 B CN 110531139B CN 201910799321 A CN201910799321 A CN 201910799321A CN 110531139 B CN110531139 B CN 110531139B
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- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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Abstract
The invention provides a current monitoring system and a control method of a mobile crushing and screening station, which specifically comprise the following steps: the system is provided with a residual current transformer and an intelligent monitoring device at the input side of a power supply; the motor of the crushing main machine is provided with a three-phase current transformer, a current conversion control device and a current voltmeter; each belt conveyor is provided with an intelligent monitoring device for monitoring the current, the residual current and the voltage of the motor in real time. The whole control system adopts CAN _ OPEN and J1939 field bus technologies, current data information monitored by the dragging unit is transmitted to the controller in real time, a system program analyzes the current data and compares the current data with built-in various working condition mode libraries, and the transmission device is intelligently controlled to achieve automatic adaptation to different working conditions; all data information can be transmitted to a remote data server through a GPS wireless terminal for supervision, remote fault diagnosis and operation and maintenance of an upper network platform, and APP for a wireless mobile network terminal is developed simultaneously for wireless remote supervision equipment of a user to enhance experience.
Description
Technical Field
The invention belongs to the technical field of mobile crushing and screening stations, and particularly relates to a current monitoring system and a control method of a mobile crushing and screening station.
Background
At present, the equipment of the mobile crushing and screening station is widely applied to national construction, is provided with a diesel engine set, provides dragging and control power for the equipment, is intelligently controlled, has low fuel cost and low operation and maintenance cost, and is recognized by vast users.
The domestic movable crushing and screening station and the current monitoring technology thereof mostly adopt a current transformer to collect the current of a main loop, are matched with an ammeter for indication, and other dragging units adopt the common protection technology of a motor, have no real-time monitoring and comprehensive application of the current, can not master the use condition of the station at all times, and have no technology for intelligently adjusting the self-adaptive working condition.
The current monitoring system and the control technology of the imported mobile crushing screening station are advanced and intelligent, and residual current monitoring and protecting device technology is adopted for lightning stroke, fire and electric shock accident risks; other dragging units have a relatively comprehensive common motor protection technology for dragging and controlling, the intelligent current monitoring device is adopted for monitoring the current of the dragging unit, but the current mostly stays on the overload and overcurrent protection technology, various current monitoring information is not collected to the controller in real time for data analysis and processing, and the working condition of the dragging unit is intelligently simulated, automatically learned and adapted to the working condition.
In summary, the mechanical operation efficiency can be better improved, the total cost of the user is reduced, and the operation conditions are improved only by improving the working condition adaptability of the equipment, enhancing the operation experience of the user, and improving the fault self-diagnosis capability.
Disclosure of Invention
According to the defects of the prior art, the invention provides the current monitoring system and the control method of the mobile crushing and screening station, so that the outage rate is reduced, and the production efficiency is improved.
The invention is realized according to the following technical scheme:
a current monitoring system of a mobile crushing and screening station comprises a diesel generator set, a control cabinet, a residual current transformer I, an air circuit breaker, a controller, a current transformer, a residual current transformer II, a crushing host motor, conveying belt motors, a water pump, a magnetic separation iron remover device, a residual current monitoring relay, an intelligent monitoring device I, an intelligent monitoring device II, a human-computer interface and a vibrating motor, wherein the residual current transformer I, the air circuit breaker, the controller, the current transformer, the residual current transformer II, the crushing host motor, the conveying belt motors, the water pump, the magnetic separation iron remover device, the residual current monitoring relay, the intelligent monitoring device I, the intelligent monitoring device II, the human-computer interface and the vibrating motor are positioned in the control cabinet; a system power cable is connected with a control cabinet bus bar by a diesel generator set through a control cabinet and a residual current transformer I; after passing through an air circuit breaker, a power line of a motor of the crushing host passes through a current transformer, then passes through an alternating current contactor started by a star corner, and then is connected with a junction box of the motor of the crushing host, a signal wire of the current transformer is connected to an intelligent monitoring device I, and then the intelligent monitoring device transmits a signal to a controller; the power line of each belt conveyor motor firstly passes through a respective circuit breaker and a respective contactor, and then is connected into the intelligent monitoring device II to be connected into each belt conveyor motor junction box; the water pump and the magnetic separation iron removal device are single-phase loads, and the circuits of the single-phase loads penetrate through the residual current mutual inductor II through the miniature circuit breaker and are connected to the loads; a power line of the vibration motor is connected to an alternating current frequency converter through a circuit breaker and a contactor, and a power supply subjected to frequency conversion modulation is connected to a wiring box of the vibration motor; the residual current monitoring relay is connected with a residual current transformer II; and the residual current monitoring relay, the intelligent monitoring device I and the intelligent monitoring device II transmit information to the controller, and the controller is connected with the HIM human-computer interface to realize data intercommunication and human-computer interaction.
Furthermore, the system also comprises a GPS wireless terminal, a wireless transmission link and a remote server; the GPS wireless terminal continuously sends various data of the crushing machine to a remote server in real time through a wireless link for an enterprise and a user ERP management system to use.
Furthermore, the controller adopts WIFI or 4G communication mode through wireless gateway, realizes that machinery uses data short distance transmission to let the user manage machinery through the APP platform.
Further, a diesel generator set is fixed in a power bin above a main frame of the mobile crusher, a power line of the diesel generator set penetrates through the residual current transformer I to be connected to an air circuit breaker in the control cabinet, and then the power line is led out through a bus bar to be used by each load unit.
Further, the residual current monitoring device is connected with the residual current transformer I, the residual current monitoring device can process signals collected by the residual current transformer I in real time, the residual current value of the whole machine equipment is displayed through a display screen, and switching value control signals can be output to be connected into the air circuit breaker in series, so that the air circuit breaker can be safely tripped to cut off electric power.
Furthermore, the intelligent monitoring device is directly connected in series with the power line, can monitor the voltage and current values of the line in real time, and provides undervoltage, overvoltage, phase loss, phase dislocation and residual current protection.
A residual current transformer I is connected in series in front of an air circuit breaker, a residual current monitoring device can process signals collected by the residual current transformer I in real time, display the residual current value of the whole equipment through a display screen, output a switching value control signal to control the air circuit breaker, and safely enable the air circuit breaker to be tripped to cut off electric power; each power dragging unit of the equipment transmits the current real-time monitoring data information of each intelligent monitoring device to the controller, and on one hand, the controller transmits the real-time information to a human-computer interface for display, triggers a related logic control program, and sends out an alarm and carries out tripping control on the circuit breaker; the controller program is built in with mode libraries under different working conditions, the mode libraries are provided with light load, moderate, overload and overload working conditions, databases and control strategies under different working conditions of each dragging unit are formed by using an override control or fuzzy algorithm, current monitoring data information collected in real time by machinery is calculated and processed in the controller, working condition information is simulated and compared with the databases, and a system can intelligently adjust a device dragging scheme according to the compared working condition information, so that the conveyed material flow is effectively controlled and accords with the real-time working conditions.
Further, the GPS wireless terminal continuously sends various data of the crushing machine to a remote server in real time through a wireless link for an enterprise and a user ERP management system to use.
Furthermore, the controller adopts WIFI or 4G communication mode through wireless gateway, realizes that machinery uses data short distance transmission to let the user manage machinery through the APP platform.
The invention has the beneficial effects that:
compared with the prior art, the invention has the following characteristics:
1. compared with domestic products, the machine is more standard and more comprehensively provided with various current monitoring devices, the current of each power dragging unit of the machine is effectively monitored in real time, faults of equipment caused by cable abrasion, component leakage, insulation grade weakening and the like are more intelligently solved, each dragging unit is more accurately protected to operate under a reliable working condition, the outage rate is reduced, and the production efficiency is improved.
2. The technology collects current data information under various working conditions, forms a 'light load, moderate, overload and overload' working condition mode library through modeling comparison analysis, enables equipment to have self-adaptive working condition capacity, applies a selective (override) control technology, realizes the soft protection effect, automatically adjusts material flow to enable the equipment current to be adjusted under a safe working condition mode, and particularly improves the working efficiency of a crusher group and the reliability of the equipment due to the self-adaptive working condition capacity.
3. The APP is applied to the wireless intelligent terminal platform, the running state of a crushing machine group system is collected in real time, so that a manipulator can remotely monitor equipment wirelessly, and the current monitoring is clear to the load of the machine and can be combined with wireless video information to accurately control the material flow conveyed by the crushing machine group.
Drawings
FIG. 1 is a schematic diagram of the electrical connections of the present invention;
FIG. 2 is a flow chart of a control method of the present invention;
fig. 3 is a flow chart of the selective (override) control application of the present invention.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a mobile crushing screening station and a current monitoring control system thereof, which comprises a diesel generator set 1, a control cabinet, a residual current transformer I2, an air circuit breaker 16, a residual current monitoring device 3, a controller 4, a current transformer 5, a residual current transformer II6, a crushing host motor 7, each conveying belt motor 8, a water pump, a magnetic separation iron remover device 9, a residual current monitoring relay 10, an intelligent monitoring device I11, an intelligent monitoring device II, a human-computer interface 12, a GPS wireless terminal 13, a wireless transmission link 14, a remote server 15, an air circuit breaker 16, a vibrating motor 17 and an alternating current frequency converter 18.
Wherein, be equipped with residual current transformer I2, air circuit breaker 16, residual current monitoring device 3, controller 4, current transformer 5, residual current transformer II6, residual current monitoring relay 10, intelligent monitoring device I11, human-computer interface 12, GPS wireless terminal 13 in the switch board.
A system power cable passes through a residual current transformer I2 by the diesel generator set 1 through the control cabinet to be connected with the air circuit breaker 16 and then is connected with a control cabinet bus bar; a power line of a motor 7 of the crushing host passes through an air protection switch from a busbar, then passes through a current transformer 5, passes through an alternating current contactor started by a star corner, and then is connected with a junction box of the motor 7, a signal line of the current transformer 5 is connected to an intelligent monitoring device I11, and then transmits a signal to a controller 4; the power line of each belt conveyor motor 8 firstly passes through a respective circuit breaker and a contactor, and then is connected into an intelligent monitoring device II to be connected into each belt conveyor motor 8 junction box; the water pump and the magnetic separation iron removal device 9 are single-phase loads, and the circuits of the single-phase loads penetrate through the residual current mutual inductance II6 through the miniature circuit breaker and are connected to the loads; a power line of a vibration motor 17 of the vibration machine is connected to an alternating current frequency converter 18 through a breaker and a contactor, and a power supply subjected to frequency conversion modulation is connected to a junction box of the vibration motor 17; the residual current monitoring relay 10 and the intelligent monitoring device I11 transmit information to the controller 4, and the controller 4 is connected with the HIM human-computer interface 12 to realize data intercommunication and human-computer interaction; the controller 4 is simultaneously connected with the GPS wireless terminal 13 to realize data sharing, and the GPS wireless terminal 13 transmits data to the remote server 15 through the wireless transmission link 14 for the management platform to use.
The diesel generator set 1 is fixed in a power bin above a main frame of the mobile crusher, the diesel engine provides power for a mobile system at the same time, a power line of the generator penetrates through a residual current transformer I2 to be connected to an air circuit breaker 16 in the control cabinet, and then the power line is led out through a bus bar to be used by each load unit; the residual current transformer ensures that all load vector current values of the machine can be acquired in real time.
The communication among the intelligent control component units of the crushing machinery adopts CAN bus protocol communication.
The human-machine interface 12 comprises an indicator light, a touch monitor and a keyboard, and realizes various human-machine interaction functions.
The GPS wireless terminal 13 continuously sends various data of the crushing machine to the remote server 15 for the enterprise and user ERP management system to use through a wireless gateway. Controller 4 adopts WIFI or 4G communication mode through wireless gateway, realizes that machinery uses data short distance transmission to let the user manage machinery through special APP platform.
The residual current monitoring device 3 is an effective protection measure for preventing personal electric shock, electric fire and electric equipment damage.
The invention adopts a 400V three-phase alternating current power supply generated by a diesel power generation set 1 to supply power to the whole machine, a 400V three-phase alternating current power supply cable is led out from a power bin generator of the crushing machine, passes through a residual current transformer I2 and is connected to an air circuit breaker 16 in a control cabinet, and then is connected to a bus copper bar to provide electric energy for the whole machine system. The controller 4 controls a load main switch, a circuit breaker, each contactor and an intelligent monitoring device to realize the starting and protecting functions of the motor system by acquiring signals of system voltage, phase, current, frequency, temperature, rotating speed, pressure and the like according to instructions of the human-computer interface 12. The human-computer interface 12 displays the working state of the starting system in real time according to the communication data of the main control unit, wherein the working state comprises data information such as voltage, phase, current, frequency, temperature, rotating speed, pressure and the like, and timely sends alarm information such as system phase loss, overvoltage, undervoltage, overcurrent, overload, overheating, starting overtime, starting frequency, communication abnormity, soft starter and hydraulic system faults and the like, and meanwhile, a storage operation log is generated, and a system maintenance prompt is sent to a user mobile terminal APP platform and a remote server through a GPS wireless terminal in due time.
As shown in fig. 2, a method for monitoring current of a mobile crushing and screening station comprises the following steps: the residual current transformer I2 is connected in series in front of the air circuit breaker 16 and transmits the acquired signal to the intelligent monitoring device I11, the intelligent monitoring device I11 sets the current signal and displays the current signal on a display screen of the intelligent monitoring device, and the device is provided with an alarm signal output contact which is connected in series in a tripping circuit of the air circuit breaker 16 and can safely and accurately cut off power supply power; each power dragging unit of the equipment transmits current real-time monitoring data information of each intelligent monitoring device I11 to the controller 4, on one hand, the controller 4 transmits the real-time information to the human-computer interface 12 for display, triggers related logic control programs, gives an alarm and controls tripping of a circuit breaker, on the other hand, a controller 4 program is internally provided with mode libraries under different working conditions and is provided with light load, moderate, overload and overload working conditions, an override control or fuzzy algorithm is used for forming databases and control strategies under different working conditions of each dragging unit, current monitoring data information collected in real time by machinery is calculated and processed in the controller, working condition information is simulated and compared with the databases, and the system can intelligently adjust the equipment dragging scheme according to the compared working condition information, so that the conveyed material flow can be effectively controlled and accords with the real-time working conditions; the system can transmit the real-time information of the equipment to a remote server 15 through a wireless GPS wireless terminal 13 for use by an upper platform; the system also adopts a wireless gateway to transmit information data in real time, and realizes wireless remote supervision on equipment or a machine group at a wireless intelligent client through the APP.
Preferably, all the power loads in the system are transmitted to the controller 4, the control program calculates and processes, the real-time power of each load after calculation is displayed on a human-computer interface or a smart phone terminal, overload is liable to trigger an overload control program, and material flow is controlled, if the liable shutdown cannot be weakened or the circuit breaker is forced to trip.
Preferably, the controller 4 is programmed with a pattern library under different working conditions, and is provided with light load, moderate load, overload and overload working conditions, and an override control or fuzzy algorithm is used to form databases and control strategies under different working conditions of each dragging unit, the current monitoring data information collected in real time by the machine is calculated and processed in the controller, working condition information is simulated and compared with the database, and the system can intelligently adjust the dragging scheme of the equipment according to the compared working condition information, so that the conveyed material flow can be effectively controlled and accords with the real-time working conditions.
As shown in FIG. 3, an alternative control of the flow control, the feed conveyor M1O, Current monitoring I1T; crushing main machine M2O, Current monitoring I2T, material level monitoring ZT and rotating speed monitoring VT; discharging conveyor M3O, Current monitoring I3And T, controlling HS by high selection, preferably controlling a feeding conveyor by a high selection value by the system, directly reducing the conveying power of the feeding conveyor to 50%, automatically switching the control of the normal feeding conveyor by the system after the material flow is recovered to be normal, and carrying out adaptive control by increasing and decreasing the power by 20%, thereby achieving soft protection of material control.
Compared with the prior art, the invention has the following characteristics:
1. compared with domestic products, the machine is more standard and more comprehensively provided with various current monitoring devices, the current of each power dragging unit of the machine is effectively monitored in real time, faults of equipment caused by cable abrasion, component leakage, insulation grade weakening and the like are more intelligently guaranteed, each dragging unit is more accurately protected to operate under a reliable working condition, the outage rate is reduced, and the production efficiency is improved.
2. The technology collects current data information under various working conditions, forms a 'light load, moderate, overload and overload' working condition mode library through modeling comparison analysis, enables equipment to have self-adaptive working condition capacity, applies a selective (override) control technology, realizes the soft protection effect, automatically adjusts material flow to enable the equipment current to be adjusted under a safe working condition mode, and particularly improves the working efficiency of a crusher group and the reliability of the equipment due to the self-adaptive working condition capacity.
3. The wireless intelligent terminal platform applies APP to collect the running state of the crushing machine group system in real time, so that a manipulator can remotely monitor equipment wirelessly, the load of the machine is clear by current monitoring, and the wireless intelligent terminal platform can be combined with wireless video information to accurately control the material flow transported by the crushing machine group!
While the present application has been described with reference to exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (8)
1. The utility model provides a current monitoring system of portable broken screening station which characterized in that: the system comprises a diesel generating set, a control cabinet, and a residual current transformer I, an air circuit breaker, a controller, a current transformer, a residual current transformer II, a crushing host motor, various conveying belt motors, a water pump, a magnetic separation iron remover device, a residual current monitoring relay, an intelligent monitoring device I, an intelligent monitoring device II, a human-computer interface and a vibrating motor which are positioned in the control cabinet;
a system power cable is connected with a control cabinet bus bar by a diesel generator set through a control cabinet and a residual current transformer I;
after passing through an air circuit breaker, a power line of a motor of the crushing host passes through a current transformer, then passes through an alternating current contactor started by a star corner, and then is connected with a junction box of the motor of the crushing host, a signal wire of the current transformer is connected to an intelligent monitoring device I, and then the signal is transmitted to a controller; the power line of each belt conveyor motor firstly passes through a respective circuit breaker and a respective contactor, and then is connected into the intelligent monitoring device II to be connected into each belt conveyor motor junction box; the water pump and the magnetic separation iron removal device are single-phase loads, and the circuits of the single-phase loads penetrate through the residual current mutual inductance II through the miniature circuit breaker and are connected to the loads;
a power line of the vibration motor is connected to an alternating current frequency converter through a circuit breaker and a contactor, and a power supply subjected to frequency conversion modulation is connected to a wiring box of the vibration motor;
the residual current monitoring relay is connected with a residual current transformer II;
and the residual current monitoring relay, the intelligent monitoring device I and the intelligent monitoring device II transmit information to the controller, and the controller is connected with the HIM human-computer interface to realize data intercommunication and human-computer interaction.
2. The current monitoring system of a mobile crushing and screening station of claim 1 wherein: the system also comprises a GPS wireless terminal, a wireless transmission link and a remote server;
the GPS wireless terminal continuously sends various data of the crushing machine to a remote server in real time through a wireless link for enterprises and user ERP management systems.
3. The current monitoring system of a mobile crushing and screening station of claim 1 wherein: the controller adopts WIFI or 4G communication mode through wireless gateway, realizes that machinery uses data short distance transmission to let the user manage machinery through the APP platform.
4. The current monitoring system of a mobile crushing and screening station of claim 1 wherein: the diesel generator set is fixed in a power bin above a main frame of the mobile crusher, a power line of the diesel generator set penetrates through the residual current transformer I to be connected to an air circuit breaker in the control cabinet, and then the power line is led out through a bus bar to be used by each load unit.
5. The current monitoring system of a mobile crushing and screening station of claim 1 wherein: the residual current monitoring device can process the residual current transformer I acquisition signal in real time, display the residual current value of the whole machine equipment through a display screen, output a control signal to control the air circuit breaker, and safely and timely trip and cut off the electric power.
6. A method of controlling a current monitoring system of a mobile crushing and screening station according to any of claims 1 to 5, characterized in that: the residual current transformer I is connected in series in front of the air circuit breaker, the residual current monitoring device can process the collected signals of the residual current transformer I in real time, display the residual current value of the whole equipment through a display screen, output a control signal to control the air circuit breaker and safely and timely trip and cut off the electric power;
each power dragging unit of the equipment transmits real-time current monitoring data information of each intelligent monitoring device to the controller, and on one hand, the controller transmits the real-time information to a human-computer interface for display, triggers a related logic control program, and sends out an alarm and carries out tripping control on the circuit breaker;
the controller program is built in with mode libraries under different working conditions, the mode libraries are provided with light load, moderate, overload and overload working conditions, databases and control strategies under different working conditions of each dragging unit are formed by using an override control or fuzzy algorithm, current monitoring data information collected in real time by machinery is calculated and processed in the controller, working condition information is simulated and compared with the databases, and a system can intelligently adjust a device dragging scheme according to the compared working condition information, so that the conveyed material flow is effectively controlled and accords with the real-time working conditions.
7. The control method according to claim 6, characterized in that: the GPS wireless terminal continuously sends various data of the crushing machine to a remote server in real time through a wireless link for an enterprise and a user ERP management system to use.
8. The control method according to claim 6, characterized in that: the controller adopts WIFI or 4G communication mode through wireless gateway, realizes that machinery uses data short distance transmission to let the user manage machinery through the APP platform.
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| CN113231189A (en) * | 2021-06-28 | 2021-08-10 | 中国水利水电第九工程局有限公司 | Intelligent control method and device for feeding and crushing balanced production of gravel coarse crushing workshop |
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| CN110064495A (en) * | 2019-04-23 | 2019-07-30 | 徐州徐工矿业机械有限公司 | The online joint control control method of movable Crushing screening plant and control system |
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