The utility model content
The utility model purpose provides a kind of winch electric-control system, can realize heavy load starting and need not at endless rope winch the velocity feedback element being set.
Be to realize above-mentioned purpose, winch electric-control system provided by the invention, comprising magnetic resistance switch speed-adjustable device and switched reluctance machines that the velocity feedback element is installed, the magnetic resistance switch speed-adjustable device is connected with switched reluctance machines, is used for the driving switch reluctance motor; Switched reluctance machines is connected with endless rope winch, is used to draw endless rope winch.
Said velocity feedback element is a speed sensor, is installed in switched reluctance machines inside.
Said speed sensor is coder, light electricity velocity sensor or hall speed sensor.
Said magnetic resistance switch speed-adjustable device comprises power filter, contactless switch, switching magnetic-resistance controller, first programmable logic controller (PLC), intrinsic safety buffer circuit and voltage transformer; Power filter is connected with contactless switch; Contactless switch is connected with the switching magnetic-resistance controller; First programmable logic controller (PLC) is through the action of transformer-supplied control contactor, and first programmable logic controller (PLC) is connected with the switching magnetic-resistance controller with the intrinsic safety buffer circuit respectively.
Said magnetic resistance switch speed-adjustable device places in the flame proof cabinet.
Said winch electric-control system also comprises intelligent intrinsic safety operator's station, and said intelligent intrinsic safety operator's station comprises second programmable logic controller (PLC), and second programmable logic controller (PLC) is connected with first programmable logic controller (PLC) in the magnetic resistance switch speed-adjustable device.
Said second programmable logic controller (PLC) places in the flame proof cabinet.
Said intelligent intrinsic safety operator's station also comprises the man-machine interaction read-out and/or reveals communication device.
The winch electric-control system that the utility model provides; Through installation rate feedback element in switched reluctance machines, saved the trouble of installation rate feedback element on endless rope winch, directly provide the rotary speed information precision of switched reluctance machines higher by the velocity feedback element in the switched reluctance machines; Make that the speed adjusting performance of magnetic resistance switch speed-adjustable device is reliable and stable; Simplified endless rope winch, reduced possible trouble point, it is more convenient stable to let winch use; Adopt the magnetic resistance switch speed-adjustable device to drive, well solved the difficult problem of heavy load starting; Further, will be installed in switched reluctance machines inside as velocity feedback component speeds sensor, simple in structure, easy to maintenance, long service life have improved the reliability of the harsh environment in the down-hole; Further, adopt programmable logic controller (PLC) to realize actions such as the start and stop of magnetic resistance switch speed-adjustable device, speed governing, protection, fault alarm, have that antijamming capability is strong, the advantage of stable performance.
The specific embodiment
Winch electric-control system provided by the invention comprises magnetic resistance switch speed-adjustable device and the switched reluctance machines that the velocity feedback element is installed, and wherein, the magnetic resistance switch speed-adjustable device is connected with switched reluctance machines, is used for the driving switch reluctance motor; Switched reluctance machines is connected with endless rope winch, is used to draw endless rope winch.
The winch electric-control system that the utility model provides; Through installation rate feedback element in switched reluctance machines, saved the trouble of installation rate feedback element on endless rope winch, directly provide the rotary speed information precision of switched reluctance machines higher by the velocity feedback element in the switched reluctance machines; Make that the speed adjusting performance of magnetic resistance switch speed-adjustable device is reliable and stable; Simplified endless rope winch, reduced possible trouble point, it is more convenient stable to let winch use; Adopt the magnetic resistance switch speed-adjustable device to drive; Architectural feature determines and verifies that by on-the-spot industry native system can satisfy the heavy load starting requirement of 1.2~1.5 times of rated load, nominal loads in daily transportation, then be difficult to accomplish at the frequency converter with power grade thus; Demonstrated fully the advantage of native system in this application; And the native system starting current is less relatively, and electrical network is not had impact, has well solved the difficult problem of heavy load starting under the coal mine.
Above-mentioned velocity feedback element is a speed sensor, can be installed in switched reluctance machines inside.Speed sensor can for coder, also can be for carrying out the sensor of rotor position detection, like light electricity velocity sensor or hall speed sensor etc.
The winch electric-control system that the utility model provides further, will be installed in switched reluctance machines inside as velocity feedback component speeds sensor, and simple in structure, easy to maintenance, long service life have improved the reliability of the harsh environment in the down-hole.
Above-mentioned magnetic resistance switch speed-adjustable device comprises power filter, contactless switch, switching magnetic-resistance controller, first programmable logic controller (PLC) (to call a PLC controller in the following text), intrinsic safety buffer circuit and voltage transformer; Power filter is connected with contactless switch; Contactless switch is connected with the switching magnetic-resistance controller; The one PLC controller is through the action of transformer-supplied control contactor, and a PLC controller is connected with the switching magnetic-resistance controller with the intrinsic safety buffer circuit respectively.
The winch electric-control system that the utility model provides; Further; Adopt programmable logic controller (PLC) (to call the PLC controller in the following text) to realize actions such as the start and stop of magnetic resistance switch speed-adjustable device, speed governing, protection, fault alarm, have that antijamming capability is strong, the advantage of stable performance.
The magnetic resistance switch speed-adjustable device can place in the flame proof cabinet.
The winch electric-control system also comprises intelligent intrinsic safety operator's station, and said intelligent intrinsic safety operator's station comprises second programmable logic controller (PLC) (to call the 2nd PLC controller in the following text), and the 2nd PLC controller is connected with a PLC controller in the magnetic resistance switch speed-adjustable device.
The 2nd PLC controller can place in the flame proof cabinet.
The winch electric-control system that the utility model provides further, adopts the flame proof design; Adopt the mode of heat pipe heat radiation in the thermal design, automatically controlled aspect adopts the four-quadrant design, when being in two four-quadrant operations in system; Can braking energy steadily be fed back to electrical network after through reactor filtering; And in the process of energy feedback, system can satisfy humidity, high temperature, the unsteady bigger working environment requirement of line voltage under coal mine according to the float voltage threshold of automatically regulating feedback of the voltage at scene.
Above-mentioned intelligent intrinsic safety operator's station can also comprise the man-machine interaction read-out and/or reveal communication device.Be can the man-machine interaction read-out in the intelligent intrinsic safety operator's station and reveal communication device, also can have only the man-machine interaction read-out, or have only the leakage communication device.
The winch electric-control system that the utility model provides, further, the leakage communication system of lift-launch is that the manipulation end and the working end of endless rope winch provides good means of communication, the not pedestrian that guaranteed to drive, the code of practice that the pedestrian does not drive; And the man-machine interaction read-out can carry out online modification to the various parameters of winch operation, can realize breakdown signal output, upload data and give aboveground monitored control system etc., realizes intelligent speed-regulating, prevention and control one, to satisfy growing colliery mechanized production system.
Fig. 1 is the structural representation of the utility model winch electric-control system.The winch electric-control system is made up of Flameproof intrinsically safe magnetic resistance switch speed-adjustable device, intelligent intrinsic safety operator's station, switched reluctance machines.Flameproof intrinsically safe magnetic resistance switch speed-adjustable device is made up of flameproof cabinet shell, power filter, contactless switch, switching magnetic-resistance controller, a PLC controller, intrinsic safety buffer circuit and voltage transformer etc.; Intelligence intrinsic safety operator's station is made up of flameproof cabinet shell, the 2nd PLC controller, man-machine interaction read-out and leakage communication system; Speed sensor is equipped with in switched reluctance machines inside.Outside main power source is connected with power filter through cable; Power filter is connected with contactless switch through cable; Contactless switch through cable is connected with the switching magnetic-resistance controller, the switching magnetic-resistance controller passes through cable and is connected with switched reluctance machines, switched reluctance machines passes through equipment such as reductor and cylinder and links to each other with the axle drive shaft of endless rope winch; External sensor or downhole monitoring system are connected communication through the intrinsic safety buffer circuit with a PLC controller, and a PLC controller also is connected with switching magnetic-resistance controller, contactless switch, intelligent intrinsic safety operator's station respectively by transformer-supplied; The 2nd PLC controller in the intelligence intrinsic safety operator's station is connected with the leakage communication system with the man-machine interaction read-out respectively.
In an instantiation, the winch electric-control system is made up of Flameproof intrinsically safe magnetic resistance switch speed-adjustable device, intelligent intrinsic safety operator's station, switched reluctance machines.Intelligence intrinsic safety operator's station comprises the 2nd PLC controller, control button, man-machine display screen and reveals communication system.The 2nd PLC controller unification in a PLC controller in the magnetic resistance switch speed-adjustable device and the intelligent intrinsic safety operator's station is a PLC controller, as adopting the S7-200 type PLC controller of Siemens Company.S7-200 type PLC controller has 2 RS-485 communication ports, and one is used for being connected with the switching magnetic-resistance controller, realizes the monitoring to the switching magnetic-resistance controller, and another is used for connecting with the man-machine interaction read-out.S7-200 type PLC controller places in the flameproof cabinet shell of magnetic resistance switch speed-adjustable device.The concrete control process of winch electric-control system is following: external sensor can be monitored the various operating modes of down-hole; Its signal of gathering is sent in the S7-200 type PLC controller through the intrinsic safety buffer circuit; S7-200 type PLC controller is to the analyzing and processing of signal data; Output control signals to the switching magnetic-resistance controller according to analysis result then, the switching magnetic-resistance controller carries out speed control according to the control signal that S7-200 type PLC controller sends to switched reluctance machines; External input signals such as the electric blocking that S7-200 type PLC controller is imported according to the outside simultaneously, limited position stoppage carry out the system protection action.
In another instantiation, the winch electric-control system is made up of magnetic resistance switch speed-adjustable device, switched reluctance machines, intelligent intrinsic safety operator's station, control monitor unit.Intelligence intrinsic safety operator's station comprises the 2nd PLC controller.The 2nd PLC controller unification in a PLC controller in the magnetic resistance switch speed-adjustable device and the intelligent intrinsic safety operator's station is a PLC controller, as adopting the S7-200 type PLC controller of Siemens Company.S7-200 type PLC controller places in the flameproof cabinet shell of intelligent intrinsic safety operator's station.Control monitor unit is provided with PLC controller, control button, display panel and leakage communication system.PLC controller in the control monitor unit also adopts the PLC controller of the S7-200 type of Siemens Company.Control monitor unit connects through control line with intelligent intrinsic safety operator's station.2 RS-485 communication ports of the S7-200 type PLC controller in the intelligence intrinsic safety operator's station, one is used for being connected with the switching magnetic-resistance controller, realizes the monitoring to the switching magnetic-resistance controller, and another is used for connecting with 485 communication ports of control monitor unit PLC controller.
What should explain at last is: above embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to previous embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of each embodiment technical scheme of essence disengaging the utility model of relevant art scheme.