CN114371661A - Emergency operation control system of dry quenching hoister - Google Patents
Emergency operation control system of dry quenching hoister Download PDFInfo
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- CN114371661A CN114371661A CN202111461759.6A CN202111461759A CN114371661A CN 114371661 A CN114371661 A CN 114371661A CN 202111461759 A CN202111461759 A CN 202111461759A CN 114371661 A CN114371661 A CN 114371661A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1108—Relay module
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses an emergency operation control system of a dry quenching hoister, which comprises: the emergency operation control unit is used for controlling the connection of the PLC control system and the rectification feedback system and is matched with the rectification feedback system control unit to input a specific signal to the rectification feedback system under the external operation; the rectification feedback system control unit is used for switching off or switching on a connecting branch of the PLC control system and the rectification feedback system according to a control signal of the emergency operation system unit and inputting a specific signal to the rectification feedback system; and the brake power supply loop control unit is used for switching off or switching on the lifting brake power supply loop and the walking brake power supply loop under the control of the emergency operation control unit and the rectification feedback system control unit. The invention can cut off the connection between the PLC control system and the rectification feedback system, and can input control signals to the rectification feedback system through external operation, thereby realizing the manual start-stop control of the rectification feedback system, the lifting mechanism and the walking mechanism.
Description
Technical Field
The invention relates to the technical field of dry quenching elevators, in particular to an emergency operation control system of a dry quenching elevator.
Background
The dry quenching hoister is one of the important devices for dry quenching production in coal chemical industry, and is a special device for conveying red coke to be dry quenched to a dry quenching tank. When the coke dry quenching hoister is used, the coke tank with red coke is arranged on the coke tank trolley by lifting and transversely moving, and the high-temperature red coke produced by the coke oven is loaded into a dry quenching tank, so that the aim of dry quenching is fulfilled.
An electric control system of the existing dry quenching hoister adopts a mode that a PLC is matched with rectification feedback, a CPU of the PLC adopts a hot standby redundant structure, a master CPU and a slave CPU are synchronous in real time through optical fibers, and when a master CPU fails and stops working, a slave CPU can be automatically switched to work in a hot mode. However, when the master CPU and the slave CPU are out of order or the PLC is out of order, the rectification and inversion unit of the electrical control system cannot be started normally to cause the shutdown of the apparatus, and if the apparatus is in the red coke conveying stage, the safety production accident is likely to occur due to the shutdown.
Disclosure of Invention
In order to solve part or all of the technical problems in the prior art, the invention provides an emergency operation control system of a dry quenching hoister.
The technical scheme of the invention is as follows:
there is provided an emergency operation control system of a dry quenching elevator, the system comprising:
the emergency operation control unit is used for controlling the connection of a PLC control system of the dry quenching hoister and the rectification feedback system and is matched with the rectification feedback system control unit to input specific signals to the rectification feedback system under the control of external operation;
the rectification feedback system control unit is used for switching off or switching on a connecting branch between the PLC control system and the rectification feedback system according to a control signal of the emergency operation system unit, and inputting a specific signal to the rectification feedback system under the control of the emergency operation control unit;
and the brake power supply loop control unit is used for disconnecting or connecting a lifting brake power supply loop and a walking brake power supply loop of the dry quenching hoister under the control of the emergency operation control unit and the rectification feedback system control unit.
In some possible implementations, the emergency operation control unit includes: the relay comprises a first direct-current power supply, a first three-position switch, a second three-position switch, a third three-position switch, a first relay, a second relay, a third relay, a fourth relay, a fifth relay and a sixth relay;
the first direct-current power supply is connected with six branches in parallel, one switching position of the first three-position switch and the first relay coil are connected in series on the first branch, one of the other two switching positions of the first three-position switch and the second relay coil are connected in series on the second branch, one switching position of the second three-position switch and the third relay coil are connected in series on the third branch, one of the other two switching positions of the second three-position switch and the fourth relay coil are connected in series on the fourth branch, one switching position of the third three-position switch and the fifth relay coil are connected in series on the fifth branch, and one of the other two switching positions of the third three-position switch and the sixth relay coil are connected in series on the sixth branch.
In some possible implementations, the rectification feedback system control unit includes: the second direct-current power supply, the circuit breaker, the first relay, the second relay, the third relay, the fourth relay, the fifth relay, the sixth relay, the lifting control relay and the walking control relay;
one end of the circuit breaker is connected with the anode of the second direct-current power supply, and the other end of the circuit breaker is connected with a rectification start-stop input control terminal of a control unit of the rectification feedback system;
a first normally open contact of the first relay and a first normally closed contact of the second relay are connected in series between the anode of the second direct-current power supply and the input end of the PLC control system, and the output end of the PLC control system is connected with an input control terminal of the control unit;
one end of a first normally open contact of the second relay is connected with the anode of the second direct-current power supply, the other end of the first normally open contact of the second relay is connected with one end of a first normally closed contact of the first relay, a normally open contact of the third relay is connected with a normally open contact of the fourth relay in parallel, and two ends of the normally open contact of the third relay are respectively connected with the other end of the first normally closed contact of the first relay and a lifting start-stop input control terminal of the control unit;
a second normally open contact of the fourth relay and a normally closed contact of the third relay are connected in series between the other end of the first normally closed contact of the first relay and a lifting direction input control terminal of the control unit;
a second normally open contact of the second relay is connected in series between the other end of the first normally closed contact of the first relay and a lifting given input control terminal of the control unit;
the fifth relay normally-open contact and the sixth relay first normally-open contact are connected in parallel, and two ends of the parallel connection are respectively connected with the other end of the first relay first normally-closed contact and a walking start-stop input control terminal of the control unit;
the second normally open contact of the sixth relay and the normally closed contact of the fifth relay are connected in series between the other end of the first normally closed contact of the first relay and the walking direction input control terminal of the control unit;
a third normally open contact of a second relay is connected in series between the other end of the first normally closed contact of the first relay and a walking given input control terminal of the control unit;
the input public end of the control unit is connected with the negative electrode of the second direct-current power supply, the lifting control relay coil is connected between the output public end of the control unit and the lifting control output control terminal in series, and the walking control relay coil is connected between the output public end of the control unit and the walking control output control terminal in series.
In some possible implementations, the brake supply circuit control unit includes: the first alternating current power supply, the first relay, the second relay, the lifting control relay, the walking control relay, the first contactor and the second contactor;
a second normally open contact of the first relay and a second normally closed contact of the second relay are connected in series between one end of the first alternating current power supply and the input end of the PLC control system, the output end of the PLC control system is respectively connected with one end of the normally open contact of the lifting control relay and one end of the normally open contact of the traveling control relay, the other end of the normally open contact of the lifting control relay is connected with one end of the first contactor coil, the other end of the first contactor coil is connected with the other end of the first alternating current power supply, the first contactor main contact is arranged on a power supply circuit of a lifting brake of the dry quenching hoister, the other end of the normally open contact of the walking control relay is connected with one end of the coil of the second contactor, the other end of the coil of the second contactor is connected with the other end of the first alternating current power supply, the second contactor main contact is arranged on a power supply loop of a walking brake of the dry quenching hoister;
second relay fourth normally open contact one end is connected second alternating current power supply one end, and the other end is connected first relay second normally closed contact one end, first relay second normally closed contact other end is connected respectively promote control relay normally open contact one end with walk capable control relay normally open contact one end.
In some possible implementations, the emergency operation control unit further includes: a first work indicator light connected in parallel with the first relay coil.
In some possible implementations, the emergency operation control unit further includes: and a second work indicator lamp connected in parallel with the second relay coil.
In some possible implementations, the first three-position switch is a key switch.
In some possible implementations, the second three-position switch and the third three-position switch are knob switches.
In some possible implementations, the first dc power supply and the second dc power supply are 24V dc power supplies.
In some possible implementations, the first ac power source is a 220V ac power source.
The technical scheme of the invention has the following main advantages:
the emergency operation control system of the dry quenching hoister can reliably cut off the connection between a PLC control system and a rectification feedback system of the dry quenching hoister, can input specific control signals to the rectification feedback system through external operation, realizes the manual start-stop control of the rectification feedback system, and realizes the manual start-stop control of a hoisting mechanism and a traveling mechanism of the hoister, thereby realizing the temporary emergency operation of the hoister after the hoister is stopped due to master-slave CPU fault or PLC fault.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. On the attachment
In the figure:
fig. 1 is a block diagram of an emergency operation system according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an emergency operation control unit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a control unit of a rectification feedback system according to an embodiment of the invention;
fig. 4 is a schematic circuit diagram of a brake power supply loop control unit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides an emergency operation control system of a dry quenching elevator, including:
the emergency operation control unit is used for controlling the connection of a PLC control system of the dry quenching hoister and the rectification feedback system and is matched with the rectification feedback system control unit to input specific signals to the rectification feedback system under the control of external operation;
the rectification feedback system control unit is used for switching off or switching on a connecting branch of the PLC control system and the rectification feedback system according to a control signal of the emergency operation system unit and inputting a specific signal to the rectification feedback system under the control of the emergency operation control unit;
and the brake power supply loop control unit is used for disconnecting or connecting a lifting brake power supply loop and a walking brake power supply loop of the dry quenching hoister under the control of the emergency operation control unit and the rectification feedback system control unit.
The emergency operation control system of the dry quenching hoister provided by the embodiment of the invention can reliably cut off the connection between the PLC control system and the rectification feedback system of the dry quenching hoister, can input a specific control signal to the rectification feedback system through external operation, realizes manual start-stop control of the rectification feedback system, and realizes manual start-stop control of the hoisting mechanism and the traveling mechanism of the hoister, thereby realizing temporary emergency operation of the hoister after the hoister is stopped due to master-slave CPU fault or PLC fault.
Further, how the emergency operation control unit, the commutation feedback system control unit, and the brake power supply circuit control unit realize the above functions is exemplified below.
Referring to fig. 2, as an example, the emergency operation control unit includes: the relay system comprises a first direct current power supply, a first three-position switch S1, a second three-position switch S2, a third three-position switch S3, a first relay K1, a second relay K2, a third relay K3, a fourth relay K4, a fifth relay K5 and a sixth relay K6;
the first relay K1 includes a first relay coil, the second relay K2 includes a second relay coil, the third relay K3 includes a third relay coil, the fourth relay K4 includes a fourth relay coil, the fifth relay K5 includes a fifth relay coil, and the sixth relay K6 includes a sixth relay coil;
six branches are connected in parallel on the first direct-current power supply, one switching position of a first three-position switch S1 and a first relay coil are connected in series on a first branch, one of the other two switching positions of the first three-position switch S1 and a second relay coil are connected in series on a second branch, one switching position of a second three-position switch S2 and a third relay coil are connected in series on a third branch, one of the other two switching positions of a second three-position switch S2 and a fourth relay coil are connected in series on a fourth branch, one switching position of a third three-position switch S3 and a fifth relay coil are connected in series on a fifth branch, and one of the other two switching positions of a third three-position switch S3 and a sixth relay coil are connected in series on a sixth branch.
Referring to fig. 3, as an example, the rectification feedback system control unit includes: the system comprises a second direct-current power supply, a circuit breaker K, a first relay K1, a second relay K2, a third relay K3, a fourth relay K4, a fifth relay K5, a sixth relay K6, a lifting control relay KT0 and a traveling control relay KZ 0;
the first relay K1 further comprises a first normally open contact of the first relay and a first normally closed contact of the first relay, the second relay K2 further comprises a first normally closed contact of the second relay, a first normally open contact of the second relay, a second normally open contact of the second relay and a third normally open contact of the second relay, the third relay K3 further comprises a normally open contact of the third relay and a normally closed contact, the fourth relay K4 further comprises a first normally open contact of the fourth relay and a second normally open contact of the fourth relay, the fifth relay K5 further comprises a normally open contact of the fifth relay and a normally closed contact, the sixth relay K6 further comprises a first normally open contact of the sixth relay and a second normally open contact of the sixth relay, the lifting control relay KT0 comprises a lifting control relay coil, and the walking control relay KZ0 comprises a walking control relay coil;
one end of the breaker K is connected with the anode of the second direct-current power supply, and the other end of the breaker K is connected with a rectification start-stop input control terminal of a control unit of the rectification feedback system;
a first normally open contact of a first relay and a first normally closed contact of a second relay are connected in series between the anode of the second direct-current power supply and the input end of the PLC control system, and the output end of the PLC control system is connected with an input control terminal of the control unit;
one end of a first normally open contact of the second relay is connected with the anode of the second direct-current power supply, the other end of the first normally open contact of the second relay is connected with one end of a first normally closed contact of the first relay, a normally open contact of the third relay is connected with a normally open contact of the fourth relay in parallel, and two ends of the normally open contact of the third relay are respectively connected with the other end of the first normally closed contact of the first relay and a lifting start-stop input control terminal of the control unit;
a second normally open contact and a third normally closed contact of a fourth relay are connected in series between the other end of the first normally closed contact of the first relay and a lifting direction input control terminal of the control unit;
a second relay normally open contact is connected in series between the other end of the first relay normally closed contact and a lifting given input control terminal of the control unit;
the fifth relay normally-open contact and the sixth relay first normally-open contact are connected in parallel, and two ends of the fifth relay normally-open contact and the sixth relay first normally-open contact after the fifth relay normally-open contact and the sixth relay first normally-open contact are connected with the other end of the first relay first normally-closed contact and a walking start-stop input control terminal of the control unit respectively;
a second normally open contact and a fifth normally closed contact of a sixth relay are connected in series between the other end of the first normally closed contact of the first relay and the walking direction input control terminal of the control unit;
a third normally open contact of a second relay is connected in series between the other end of the first normally closed contact of the first relay and a walking given input control terminal of the control unit;
an input common end of the control unit is connected with a negative electrode of the second direct-current power supply, a lifting control relay coil is connected between an output common end of the control unit and a lifting control output control terminal in series, and a walking control relay coil is connected between an output common end of the control unit and a walking control output control terminal in series.
Taking the siemens SINAMICSS120 system as an example of a rectification feedback system of a dry quenching lifter, 4 terminals may be selected from the X122 terminal row of the control unit CU320 of the siemens S120 system and configured as a rectification start input control terminal, a lifting start-stop input control terminal, a lifting direction input control terminal, and a lifting given input control terminal, 3 terminals may be selected from the X132 terminal row of the control unit CU320 and configured as a walking start-stop input control terminal, a walking direction input control terminal, and a walking given input control terminal, 2 terminals may be selected from the X122 terminal row of the control unit CU320 and configured as a lifting control output control terminal and a walking control output control terminal, and a corresponding M terminal is selected from the X122 terminal row and configured as an output common terminal.
Further, referring to fig. 4, as an example, the brake power supply circuit control unit includes: the system comprises a first alternating current power supply, a first relay K1, a second relay K2, a lifting control relay KT0, a traveling control relay KZ0, a first contactor KT1 and a second contactor KT 2;
the first relay K1 further comprises a first relay second normally-open contact and a first relay second normally-closed contact, the second relay K2 further comprises a second relay second normally-closed contact and a second relay fourth normally-open contact, the lifting control relay KT0 further comprises a lifting control relay normally-open contact, the walking control relay KZ0 further comprises a walking control relay normally-open contact, the first contactor KT1 comprises a first contactor coil and a first contactor main contact, and the second contactor KT2 comprises a second contactor coil and a second contactor main contact;
a first relay second normally open contact and a second relay second normally closed contact are connected in series between one end of a first alternating current power supply and the input end of a PLC control system, the output end of the PLC control system is respectively connected with one end of a lifting control relay normally open contact and one end of a walking control relay normally open contact, the other end of the lifting control relay normally open contact is connected with one end of a first contactor coil, the other end of the first contactor coil is connected with the other end of the first alternating current power supply, a first contactor main contact is arranged on a lifting brake power supply loop of a dry quenching hoister, the other end of the walking control relay normally open contact is connected with one end of a second contactor coil, the other end of the second contactor coil is connected with the other end of the first alternating current power supply, and the second contactor main contact is arranged on a walking brake power supply loop of the dry quenching hoister;
one end of a fourth normally open contact of the second relay is connected with one end of a second alternating current power supply, the other end of the fourth normally open contact of the second relay is connected with one end of a second normally closed contact of the first relay, and the other end of the second normally closed contact of the first relay is respectively connected with one end of a normally open contact of the lifting control relay and one end of a normally open contact of the walking control relay.
On the basis of the emergency operation control unit, the rectification feedback system control unit and the brake power supply loop control unit which are specifically arranged, when the PLC control system needs to be cut off, only the switch position of the first three-position switch S1 connected with the first relay coil in series is required to be disconnected, and at the moment, the first normally open contact and the second normally open contact of the first relay are in the disconnected state to cut off the PLC control system. When emergency operation control is required, the switch position of a first three-position switch S1 connected with a second relay coil in series is communicated to close each normally open contact of a second relay, and then the switch position of a second three-position switch S2 and the switch position of a third three-position switch S3 are switched according to the lifting control requirement and the traveling control requirement of the dry quenching elevator. Specifically, when the lifting machine needs to be controlled to ascend, the switch position of a second three-position switch S2 connected with a third relay coil in series is communicated, at the moment, the lifting given input control terminal and the lifting start-stop input control terminal of a control unit of the rectification feedback system receive corresponding current signals, the lifting control output control terminal outputs current signals, the normally open contact of the lifting control relay is closed, the first contactor coil flows current, the main contact of the first contactor is closed to be communicated with a lifting brake power supply loop, the lifting brake is opened, and ascending control of the lifting machine is achieved. When the elevator needs to be controlled to descend, the switch position of a second three-position switch S2 connected with a fourth relay coil in series is communicated, at the moment, a lifting given input control terminal, a lifting direction input control terminal and a lifting start-stop input control terminal of a control unit of the rectification feedback system receive corresponding current signals, a lifting control output control terminal outputs current signals, a normally open contact of a lifting control relay is closed, a first contactor coil flows current, a first contactor main contact is closed and communicated with a lifting brake power supply loop, a lifting brake is opened, and descending control of the elevator is achieved. When the running of the elevator needs to be controlled, the switch position of a third three-position switch S3 connected with a fifth relay coil in series is communicated, at the moment, a running given input control terminal and a running start-stop input control terminal of a control unit of the rectification feedback system receive corresponding current signals, a running control output control terminal outputs current signals, a normally open contact of a running control relay is closed, a second contactor coil flows current, a main contact of a second contactor is closed to be communicated with a running brake power supply loop, the running brake is opened, and the running control of the elevator is realized. When the elevator needs to be controlled to run reversely, the switch position of a third three-position switch S3 connected with a sixth relay coil in series is communicated, at the moment, a running given input control terminal, a running direction input control terminal and a running start-stop input control terminal of a control unit of the rectification feedback system receive corresponding current signals, a running control output control terminal outputs current signals, a normally open contact of a running control relay is closed, current flows through a second contactor coil, a main contact of a second contactor is closed to be communicated with a running brake power supply loop, a running brake is opened, and running control of the elevator is achieved.
Optionally, in order to facilitate operation control and reduce the risk of misoperation, in an embodiment of the present invention, in the emergency operation control unit, the first switch position and the first relay coil of the first three-position switch S1 are connected in series to the first branch, the third switch position and the second relay coil of the first three-position switch S1 are connected in series to the second branch, the first switch position and the third relay coil of the second three-position switch S2 are connected in series to the third branch, the third switch position and the fourth relay coil of the second three-position switch S2 are connected in series to the fourth branch, the first switch position and the fifth relay coil of the third three-position switch S3 are connected in series to the fifth branch, and the third switch position and the sixth relay coil of the third three-position switch S3 are connected in series to the sixth branch.
Further, referring to fig. 2, in an embodiment of the present invention, the emergency operation control unit may further include: a first operation indicator lamp H1 connected in parallel with the first relay coil, and a second operation indicator lamp H2 connected in parallel with the second relay coil.
Through setting up first work pilot lamp H1 and second work pilot lamp H2, can make things convenient for the staff to accurately learn the current state of emergency operation control system. Specifically, when the first operation indicator lamp H1 is turned on, it indicates that current flows through the first relay coil, and the PLC control system performs signal setting control of the rectification feedback system. When the second operation indicator lamp H2 is turned on, it indicates that current flows through the second relay coil, and the PLC control system is turned off, and the signal setting control of the commutation feedback system can be performed by an external operation.
Further, in an embodiment of the present invention, the first three-position switch S1 may be a key switch, and the second three-position switch S2 and the third three-position switch S3 may be knob switches.
Through adopting key switch and knob switch matched with type of construction, can enough reduce the risk of staff's maloperation, can make things convenient for hoist mechanism and the manual start-stop control of walking mechanism of lifting machine again.
Optionally, the first dc power supply and the second dc power supply are 24V dc power supplies, and the first ac power supply is 220V ac power supply.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An emergency operation control system for a dry quenching elevator, the system comprising:
the emergency operation control unit is used for controlling the connection of a PLC control system of the dry quenching hoister and the rectification feedback system and is matched with the rectification feedback system control unit to input specific signals to the rectification feedback system under the control of external operation;
the rectification feedback system control unit is used for switching off or switching on a connecting branch between the PLC control system and the rectification feedback system according to a control signal of the emergency operation system unit, and inputting a specific signal to the rectification feedback system under the control of the emergency operation control unit;
and the brake power supply loop control unit is used for disconnecting or connecting a lifting brake power supply loop and a walking brake power supply loop of the dry quenching hoister under the control of the emergency operation control unit and the rectification feedback system control unit.
2. The emergency operation control system of the dry quenching elevator of claim 1, wherein the emergency operation control unit comprises: the relay comprises a first direct-current power supply, a first three-position switch, a second three-position switch, a third three-position switch, a first relay, a second relay, a third relay, a fourth relay, a fifth relay and a sixth relay;
the first direct-current power supply is connected with six branches in parallel, one switching position of the first three-position switch and the first relay coil are connected in series on the first branch, one of the other two switching positions of the first three-position switch and the second relay coil are connected in series on the second branch, one switching position of the second three-position switch and the third relay coil are connected in series on the third branch, one of the other two switching positions of the second three-position switch and the fourth relay coil are connected in series on the fourth branch, one switching position of the third three-position switch and the fifth relay coil are connected in series on the fifth branch, and one of the other two switching positions of the third three-position switch and the sixth relay coil are connected in series on the sixth branch.
3. The emergency operation control system of the dry quenching elevator as set forth in claim 2, wherein the rectification feedback system control unit comprises: the second direct-current power supply, the circuit breaker, the first relay, the second relay, the third relay, the fourth relay, the fifth relay, the sixth relay, the lifting control relay and the walking control relay;
one end of the circuit breaker is connected with the anode of the second direct-current power supply, and the other end of the circuit breaker is connected with a rectification start-stop input control terminal of a control unit of the rectification feedback system;
a first normally open contact of the first relay and a first normally closed contact of the second relay are connected in series between the anode of the second direct-current power supply and the input end of the PLC control system, and the output end of the PLC control system is connected with an input control terminal of the control unit;
one end of a first normally open contact of the second relay is connected with the anode of the second direct-current power supply, the other end of the first normally open contact of the second relay is connected with one end of a first normally closed contact of the first relay, a normally open contact of the third relay is connected with a normally open contact of the fourth relay in parallel, and two ends of the normally open contact of the third relay are respectively connected with the other end of the first normally closed contact of the first relay and a lifting start-stop input control terminal of the control unit;
a second normally open contact of the fourth relay and a normally closed contact of the third relay are connected in series between the other end of the first normally closed contact of the first relay and a lifting direction input control terminal of the control unit;
a second normally open contact of the second relay is connected in series between the other end of the first normally closed contact of the first relay and a lifting given input control terminal of the control unit;
the fifth relay normally-open contact and the sixth relay first normally-open contact are connected in parallel, and two ends of the parallel connection are respectively connected with the other end of the first relay first normally-closed contact and a walking start-stop input control terminal of the control unit;
the second normally open contact of the sixth relay and the normally closed contact of the fifth relay are connected in series between the other end of the first normally closed contact of the first relay and the walking direction input control terminal of the control unit;
a third normally open contact of a second relay is connected in series between the other end of the first normally closed contact of the first relay and a walking given input control terminal of the control unit;
the input public end of the control unit is connected with the negative electrode of the second direct-current power supply, the lifting control relay coil is connected between the output public end of the control unit and the lifting control output control terminal in series, and the walking control relay coil is connected between the output public end of the control unit and the walking control output control terminal in series.
4. The emergency operation control system of the dry quenching elevator of claim 3, wherein the brake power loop control unit comprises: the first alternating current power supply, the first relay, the second relay, the lifting control relay, the walking control relay, the first contactor and the second contactor;
a second normally open contact of the first relay and a second normally closed contact of the second relay are connected in series between one end of the first alternating current power supply and the input end of the PLC control system, the output end of the PLC control system is respectively connected with one end of the normally open contact of the lifting control relay and one end of the normally open contact of the traveling control relay, the other end of the normally open contact of the lifting control relay is connected with one end of the first contactor coil, the other end of the first contactor coil is connected with the other end of the first alternating current power supply, the first contactor main contact is arranged on a power supply circuit of a lifting brake of the dry quenching hoister, the other end of the normally open contact of the walking control relay is connected with one end of the coil of the second contactor, the other end of the coil of the second contactor is connected with the other end of the first alternating current power supply, the second contactor main contact is arranged on a power supply loop of a walking brake of the dry quenching hoister;
second relay fourth normally open contact one end is connected second alternating current power supply one end, and the other end is connected first relay second normally closed contact one end, first relay second normally closed contact other end is connected respectively promote control relay normally open contact one end with walk capable control relay normally open contact one end.
5. The emergency operation control system of the dry quenching elevator according to any one of claims 2 to 4, wherein the emergency operation control unit further comprises: a first work indicator light connected in parallel with the first relay coil.
6. The emergency operation control system of the dry quenching elevator according to any one of claims 2 to 4, wherein the emergency operation control unit further comprises: and a second work indicator lamp connected in parallel with the second relay coil.
7. The emergency operation control system of the dry quenching elevator according to any one of claims 2 to 4, wherein the first three-position switch is a key switch.
8. The emergency operation control system of the dry quenching elevator according to any one of claims 2 to 4, wherein the second three-position switch and the third three-position switch are rotary switches.
9. The emergency operation control system of the dry quenching elevator as set forth in claim 4, wherein the first DC power source and the second DC power source are 24V DC power sources.
10. The emergency operation control system of the dry quenching elevator as set forth in claim 4, wherein the first AC power source is a 220V AC power source.
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