CN114371661B - Emergency operation control system of coke dry quenching hoister - Google Patents
Emergency operation control system of coke dry quenching hoister Download PDFInfo
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- CN114371661B CN114371661B CN202111461759.6A CN202111461759A CN114371661B CN 114371661 B CN114371661 B CN 114371661B CN 202111461759 A CN202111461759 A CN 202111461759A CN 114371661 B CN114371661 B CN 114371661B
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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 following components: the emergency operation control unit is used for controlling the connection between the PLC control system and the rectification feedback system and inputting a specific signal to the rectification feedback system in cooperation with the rectification feedback system control unit under external operation; the control unit of the rectification feedback system is used for switching off or switching on a connecting branch of the PLC control system and the rectification feedback system according to the 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 running 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 running mechanism.
Description
Technical Field
The invention relates to the technical field of coke dry quenching elevators, in particular to an emergency operation control system of a coke dry quenching elevator.
Background
The dry quenching hoister is one of important equipment for the dry quenching production of coal chemical industry, and is special equipment for conveying red Jiao Yun which needs to be subjected to dry quenching to a dry quenching tank. When the dry quenching hoister is used, the coke tank filled with red coke is lifted and transversely moved on the coke tank trolley, and the high-temperature red coke produced by the coke oven is filled into the dry quenching tank, so that the aim of dry quenching is fulfilled.
The existing electric control system of the dry quenching hoister adopts a mode of matching PLC with rectification feedback, the CPU of the PLC adopts a hot standby redundant structure, the master CPU and the slave CPU are synchronous in real time through optical fibers, and when the master CPU is stopped due to failure, the slave CPU can automatically perform hot switching operation. However, when the master and slave CPUs are simultaneously in fault shutdown or the PLC is in communication failure, the rectification inversion unit of the electric control system cannot be started normally to cause equipment shutdown, and if the equipment is in a red focus conveying stage at this time, safety production accidents are easy to occur due to 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:
an emergency operation control system of a dry quenching hoister is provided, and the system comprises:
the emergency operation control unit is used for controlling the connection between the PLC control system of the dry quenching hoister and the rectification feedback system and inputting a specific signal to the rectification feedback system in cooperation with the rectification feedback system control unit under the external operation control;
the control unit of the rectification feedback system is used for switching off or switching on a connecting branch of the PLC control system and the rectification feedback system according to the 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 switching off or switching on the lifting brake power supply loop and the running 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 first direct current power supply, the first three-position switch, the second three-position switch, the third three-position switch, the first relay, the second relay, the third relay, the fourth relay, the fifth relay and the sixth relay;
six branches are connected in parallel on the first direct-current power supply, one switch 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 switch positions of the first three-position switch and the second relay coil are connected in series on the second branch, one switch 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 switch positions of the second three-position switch and the fourth relay coil are connected in series on the fourth branch, one switch 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 switch 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 rectifying 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 rectifying start-stop input control terminal of a control unit of the rectifying feedback system;
the first normally-open contact of the first relay and the 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 the 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, the normally open contact of the third relay is connected with the first normally open contact of the fourth relay in parallel, and two ends of the first normally open contact of the third relay after being connected in parallel 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;
the second normally-open contact of the fourth relay and the 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;
the 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 normally open contact of the relay is connected in parallel with the first normally open contact of the sixth relay, and two ends of the parallel connection are respectively connected with the other end of the first normally closed contact of the first relay and a running 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 a running direction input control terminal of the control unit;
a second relay third normally open contact is connected in series between the other end of the first normally closed contact of the first relay and a running given input control terminal of the control unit;
the input public end of the control unit is connected with the cathode of the second direct current power supply, the lifting control relay coil is connected in series between the output public end of the control unit and the lifting control output control terminal, and the running control relay coil is connected in series between the output public end of the control unit and the running control output control terminal.
In some possible implementations, the brake power supply loop control unit includes: the first alternating current power supply, the first relay, the second relay, the lifting control relay, the running control relay, the first contactor and the second contactor;
the device comprises a first alternating current power supply, a PLC control system, a first relay, a second relay, a first contactor, a second contactor, a first contactor coil, a second contactor, a first contactor main contact and a second contactor main contact, wherein the first normally open contact of the first relay and the 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;
one end of a fourth normally-open contact of the second relay is connected with one end of the 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.
In some possible implementations, the emergency operation control unit further includes: and the first working indicator lamp is connected with the first relay coil in parallel.
In some possible implementations, the emergency operation control unit further includes: and the second working indicator lamp is connected with the second relay coil in parallel.
In some possible implementations, the first three-position switch is a key switch.
In some possible implementations, the second and third three-position switches are rotary switches.
In some possible implementations, the first dc power source and the second dc power source are 24V dc power sources.
In some possible implementations, the first ac power source is a 220V ac power source.
The technical scheme of the invention has the main advantages that:
the emergency operation control system of the dry quenching elevator can reliably cut off the connection between the PLC control system and the rectification feedback system of the dry quenching elevator, can input a specific control signal to the rectification feedback system through external operation, and realizes the manual start-stop control of the rectification feedback system and the manual start-stop control of a lifting mechanism and a running mechanism of the elevator, thereby realizing the temporary emergency operation of the elevator after the elevator is stopped due to the failure of a master-slave CPU or the failure of the PLC.
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 without limitation to the invention. Attached at
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 feedback rectification system according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a brake power supply loop control unit according to an embodiment of the 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 specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes in detail the technical scheme provided by the embodiment of the invention 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, the system comprising:
the emergency operation control unit is used for controlling the connection between the PLC control system of the dry quenching hoister and the rectification feedback system and inputting a specific signal to the rectification feedback system by matching with the rectification feedback system control unit under the external operation control;
the control unit of the rectification feedback system is used for switching off or switching on a connecting branch of the PLC control system and the rectification feedback system according to the 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 switching off or switching on a lifting brake power supply loop and a travelling 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.
According to the emergency operation control system of the dry quenching elevator, which is provided by the embodiment of the invention, the connection between the PLC control system and the rectification feedback system of the dry quenching elevator can be reliably cut off, a specific control signal can be input to the rectification feedback system through external operation, the manual start-stop control of the rectification feedback system is realized, and the manual start-stop control of a lifting mechanism and a running mechanism of the elevator is realized, so that the temporary emergency operation of the elevator can be realized after the elevator is stopped due to the failure of a master-slave CPU or the failure of the PLC.
Further, how the emergency operation control unit, the rectification feedback system control unit, and the brake power supply circuit control unit achieve the above functions is exemplified below.
Referring to fig. 2, as an example, the emergency operation control unit includes: the first direct-current power supply, the first three-position switch S1, the second three-position switch S2, the third three-position switch S3, the first relay K1, the second relay K2, the third relay K3, the fourth relay K4, the fifth relay K5 and the 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 the first three-position switch S1 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 S1 and the second relay coil are connected in series on the second branch, one switching position of the second three-position switch S2 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 S2 and the fourth relay coil are connected in series on the fourth branch, one switching position of the third three-position switch S3 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 S3 and the sixth relay coil are connected in series on the 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 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 running control relay KZ0;
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 third normally open contact of the 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 fifth normally open contact and a normally closed contact of the fifth relay, 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 running control relay KZ0 comprises a running 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 rectifying start-stop input control terminal of a control unit of the rectifying 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 the 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 third normally open contact of the second relay is connected with a first normally open contact of the fourth relay in parallel, and two ends of the first normally open contact of the second relay after being connected in parallel 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 a 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 normally open contact of the fifth relay is connected in parallel with the first normally open contact of the sixth relay, and two ends after being connected in parallel are respectively connected with the other end of the first normally closed contact of the first relay and a running start-stop input control terminal of the control unit;
a sixth relay second normally open contact and a fifth relay normally closed contact are connected in series between the other end of the first normally closed contact of the first relay and a running direction input control terminal of the control unit;
a second relay third normally open contact is connected in series between the other end of the first normally closed contact of the first relay and a running given input control terminal of the control unit;
the input public end of the control unit is connected with the cathode of the second direct current power supply, a lifting control relay coil is connected in series between the output public end of the control unit and the lifting control output control terminal, and a running control relay coil is connected in series between the output public end of the control unit and the running control output control terminal.
Taking the siemens SINAMICSS system as an example of a rectifying feedback system of the dry quenching elevator, 4 terminals can be selected from the X122 terminal row of the control unit CU320 of the siemens S120 system to be respectively configured as a rectifying 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 can be selected from the X132 terminal row of the control unit CU320 to be respectively configured as a running start stop input control terminal, a running direction input control terminal and a running given input control terminal, 2 terminals can be selected from the X122 terminal row of the control unit CU320 to be respectively configured as a lifting control output control terminal and a running control output control terminal, and a corresponding M terminal can be selected from the X122 terminal row to be configured as an output common terminal.
Further, referring to fig. 4, as an example, the brake power supply loop control unit includes: the electric power control device comprises a first alternating current power supply, a first relay K1, a second relay K2, a lifting control relay KT0, a running control relay KZ0, a first contactor KT1 and a second contactor KT2;
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 running control relay KZ0 further comprises a running 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 normally-open contact of a lifting control relay and one end of a normally-open contact of a running control relay, the other end of the normally-open contact of the lifting control relay 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 lifter, the other end of the normally-open contact of the running control relay 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 running brake power supply loop of the dry quenching lifter;
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 running control relay.
Based on 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 is required to be cut off, only the switch position of the first three-position switch S1 connected in series with the first relay coil 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 a disconnected state so as to cut off the PLC control system. When emergency operation control is needed, the switch position of the first three-position switch S1 connected in series with the second relay coil is communicated to enable each normally open contact of the second relay to be closed, and then the switch position of the second three-position switch S2 and the switch position of the third three-position switch S3 are switched according to the lifting control requirement and the running control requirement of the dry quenching hoister. Specifically, when the lifting machine needs to be controlled to ascend, the switch position of the second three-position switch S2 connected in series with the third relay coil is communicated, at the moment, a lifting given 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 the current signals, a lifting control relay normally-open contact 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 lifting control of the lifting machine is achieved. When the lifting machine needs to be controlled to descend, the switch position of the second three-position switch S2 connected in series with the fourth relay coil 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 the current signals, a lifting control relay normally open contact 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 lifting machine is achieved. When the elevator needs to be controlled to run, the switch position of a third position switch S3 connected in series with the fifth relay coil 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 rectifying feedback system receive corresponding current signals, a running control output control terminal outputs the current signals, a normally open contact of the running control relay is closed, a current flows through the second contactor coil, a main contact of the second contactor is closed and communicated with a running brake power supply loop, a running brake is opened, and running control of the elevator is realized. When the elevator needs to be controlled to oppositely travel, the switch position of a third three-position switch S3 connected in series with a sixth relay coil is communicated, at the moment, a travel given input control terminal, a travel direction input control terminal and a travel start-stop input control terminal of a control unit of the rectification feedback system receive corresponding current signals, a travel control output control terminal outputs the current signals, a normally open contact of the travel control relay is closed, a current flows through a second contactor coil, a main contact of the second contactor is closed to be communicated with a travel brake power supply loop, a travel brake is opened, and travel control of the elevator is realized.
Optionally, in order to facilitate operation control and reduce risk of misoperation, in an embodiment of the present invention, in the emergency operation control unit, a first switch position and a first relay coil of the first three-position switch S1 are connected in series on the first branch, a third switch position and a second relay coil of the first three-position switch S1 are connected in series on the second branch, a first switch position and a third relay coil of the second three-position switch S2 are connected in series on the third branch, a third switch position and a fourth relay coil of the second three-position switch S2 are connected in series on the fourth branch, a first switch position and a fifth relay coil of the third three-position switch S3 are connected in series on the fifth branch, and a third switch position and a sixth relay coil of the third three-position switch S3 are connected in series on 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 work indicator lamp H1 connected in parallel with the first relay coil, and a second work 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 know the current state of emergent operation control system accurately. Specifically, when the first working indicator lamp H1 is turned on, it indicates that the first relay coil has current flowing through it, and at this time, the PLC control system performs signal given control of the rectifying feedback system. When the second work indicator lamp H2 is turned on, the current flows through the second relay coil, the PLC control system is cut off, and the signal given control of the rectification feedback system can be performed through external operation.
Further, in an embodiment of the present invention, the first third position switch S1 may be a key switch, and the second and third position switches S2 and S3 may be knob switches.
Through adopting key switch and knob switch matched with structural style, can enough reduce staff's maloperation's risk, can make things convenient for the manual start-stop control of hoist mechanism and running gear 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 should be noted that in this document, relational terms such as "first" and "second" and the like are 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. Moreover, 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 this context, "front", "rear", "left", "right", "upper" and "lower" are referred to with respect to the placement state shown in the drawings.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting thereof; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. An emergency operation control system of a dry quenching elevator, the system comprising:
the emergency operation control unit is used for controlling the connection between the PLC control system of the dry quenching hoister and the rectification feedback system and inputting a specific signal to the rectification feedback system in cooperation with the rectification feedback system control unit under the external operation control;
the control unit of the rectification feedback system is used for switching off or switching on a connecting branch of the PLC control system and the rectification feedback system according to the 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;
the brake power supply loop control unit is used for switching off or switching on a lifting brake power supply loop and a running 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 unit includes: the first direct current power supply, the first three-position switch, the second three-position switch, the third three-position switch, the first relay, the second relay, the third relay, the fourth relay, the fifth relay and the sixth relay;
six branches are connected in parallel on the first direct-current power supply, one switch position of the first three-position switch and the first relay coil are connected in series on a first branch, one of the other two switch positions of the first three-position switch and the second relay coil are connected in series on a second branch, one switch position of the second three-position switch and the third relay coil are connected in series on a third branch, one of the other two switch positions of the second three-position switch and the fourth relay coil are connected in series on a fourth branch, one switch position of the third three-position switch and the fifth relay coil are connected in series on a fifth branch, and one of the other two switch positions of the third three-position switch and the sixth relay coil are connected in series on a sixth branch;
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 rectifying start-stop input control terminal of a control unit of the rectifying feedback system;
the first normally-open contact of the first relay and the 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 the 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, the normally open contact of the third relay is connected with the first normally open contact of the fourth relay in parallel, and two ends of the first normally open contact of the third relay after being connected in parallel 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;
the second normally-open contact of the fourth relay and the 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;
the 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 normally open contact of the relay is connected in parallel with the first normally open contact of the sixth relay, and two ends of the parallel connection are respectively connected with the other end of the first normally closed contact of the first relay and a running 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 a running direction input control terminal of the control unit;
a second relay third normally open contact is connected in series between the other end of the first normally closed contact of the first relay and a running given input control terminal of the control unit;
the input public end of the control unit is connected with the cathode of the second direct current power supply, the lifting control relay coil is connected in series between the output public end of the control unit and the lifting control output control terminal, and the running control relay coil is connected in series between the output public end of the control unit and the running control output control terminal.
2. The emergency operation control system of a dry quenching elevator as claimed in claim 1, wherein the brake power supply loop control unit includes: the first alternating current power supply, the first relay, the second relay, the lifting control relay, the running control relay, the first contactor and the second contactor;
the device comprises a first alternating current power supply, a PLC control system, a first relay, a second relay, a first contactor, a second contactor, a first contactor coil, a second contactor, a first contactor main contact and a second contactor main contact, wherein the first normally open contact of the first relay and the 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;
one end of a fourth normally-open contact of the second relay is connected with one end of the first alternating-current power supply, the other end of the fourth normally-open contact of the second relay is connected with one end of the 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 the normally-open contact of the lifting control relay and one end of the normally-open contact of the running control relay.
3. The emergency operation control system of a dry quenching elevator according to claim 1 or 2, wherein the emergency operation control unit further comprises: and the first working indicator lamp is connected with the first relay coil in parallel.
4. The emergency operation control system of a dry quenching elevator according to claim 1 or 2, wherein the emergency operation control unit further comprises: and the second working indicator lamp is connected with the second relay coil in parallel.
5. The emergency operation control system of a dry quenching elevator as claimed in claim 1 or 2, wherein the first three-position switch is a key switch.
6. The emergency operation control system of a dry quenching elevator as claimed in claim 1 or 2, wherein the second and third three-position switches are rotary switches.
7. The emergency operation control system of a dry quenching elevator as claimed in claim 2, wherein the first and second dc power sources are 24V dc power sources.
8. The emergency operation control system of a dry quenching elevator as claimed in claim 2, wherein the first ac power source is a 220V ac power source.
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| CN202111461759.6A CN114371661B (en) | 2021-12-02 | 2021-12-02 | Emergency operation control system of coke dry quenching hoister |
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| CN202111461759.6A CN114371661B (en) | 2021-12-02 | 2021-12-02 | Emergency operation control system of coke dry quenching hoister |
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