CN221261538U - Device for switching control of rotary kiln - Google Patents
Device for switching control of rotary kiln Download PDFInfo
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- CN221261538U CN221261538U CN202323002609.6U CN202323002609U CN221261538U CN 221261538 U CN221261538 U CN 221261538U CN 202323002609 U CN202323002609 U CN 202323002609U CN 221261538 U CN221261538 U CN 221261538U
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- direct current
- rotary kiln
- switching
- speed regulator
- circuit breaker
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- 230000005284 excitation Effects 0.000 claims abstract description 45
- 238000012545 processing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 5
- 239000004568 cement Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000002894 chemical waste Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Abstract
The utility model discloses a device for rotary kiln switching control, which belongs to the technical field of rotary kiln control and solves the problem that the production is influenced when a traditional rotary kiln control system is single and is in fault shutdown maintenance; the second frame circuit breaker is connected with a second direct current speed regulator, the second direct current speed regulator is connected with an armature switching knife and an excitation switching knife in parallel, the armature switching knife is connected with a direct current motor, the excitation switching knife is connected with an excitation coil of the direct current motor, the direct current motor is connected with a rotary kiln, and the rotary kiln is connected with a CPU through signals. The utility model realizes the double-loop guarantee of the rotary kiln electric control device and improves the reliability of stable operation of equipment.
Description
Technical Field
The utility model belongs to the technical field of rotary kiln control, and particularly relates to a device for rotary kiln switching control.
Background
Various industrial waste residues are often generated in chemical industrial production, some of the chemical waste residues are toxic substances, some of the chemical waste residues are industrial raw materials, if the waste residues are directly poured, the waste residues waste natural resources of the earth, even pollute the earth environment, influence the ecological environment and are unfavorable for sustainable development, and if the chemical waste residues are made into cement, resources are saved, the environment is protected, and a rotary kiln is needed for manufacturing the cement.
The transmission control device of the traditional rotary kiln is single in equipment and low in automation degree, workers are required to go to the equipment to operate on site, and when the device breaks down, the workers are required to check the faults one by one, the machine is required to stop when the faults are checked, the process is longer, the working efficiency is low, the production efficiency of enterprises is affected, more workers are required to maintain the equipment, the production cost of the enterprises is increased, a large amount of dust is generated on the production site, the production site is harmful to human bodies, and the device is not suitable for long-time work of the workers, so that the device is correspondingly improved.
Disclosure of utility model
The utility model aims to provide a device for rotary kiln switching control, which aims to solve the problem that the production is affected if a traditional rotary kiln control system is single and is subjected to shutdown maintenance.
The technical scheme of the utility model is as follows: the device for switching control of the rotary kiln comprises a CPU (central processing unit), a circuit breaker module, a speed regulating cabinet and a switching cabinet, wherein the CPU is respectively connected with the circuit breaker module, the speed regulating cabinet and the switching cabinet in a signal manner, the circuit breaker module comprises a first frame circuit breaker and a second frame circuit breaker, the speed regulating cabinet comprises a first direct current speed regulator and a second direct current speed regulator, the switching cabinet comprises an armature switching knife and an excitation switching knife, the CPU is connected with a transformer, the transformer is connected with the first frame circuit breaker and the second frame circuit breaker in parallel, the first frame circuit breaker is connected with the first direct current speed regulator, and the first direct current speed regulator is connected with the armature switching knife and the excitation switching knife in parallel; the second frame circuit breaker is connected with a second direct current speed regulator, the second direct current speed regulator is connected with an armature switching knife and an excitation switching knife in parallel, the armature switching knife is connected with a direct current motor, the excitation switching knife is connected with an excitation coil of the direct current motor, the direct current motor is connected with a rotary kiln, and the rotary kiln is connected with a CPU through signals.
Further, the first direct current speed regulator and the second direct current speed regulator are respectively connected with an excitation module; the excitation module is in communication connection with the direct current speed regulator and provides an excitation power supply for the direct current motor.
Further, a velometer is connected to the direct current motor and is respectively connected with the first direct current speed regulator and the second direct current speed regulator in a signal manner; the speed measuring machine can monitor the rotating speed of the direct current motor and feed back the rotating speed to the direct current speed regulator, and the direct current speed regulator regulates the rotating speed according to the feedback value, so that the speed of the direct current motor reaches a given value as soon as possible.
Further, the rotary kiln is provided with a speed protection sensor which is in signal connection with the CPU; the speed sensing protector can calculate the rotation speed of the rotary kiln according to the motor rotation speed fed back by the direct current speed regulator, the speed protection is carried out through the calculation of the CPU, and when the rotary kiln is overspeed, the CPU sends out a control signal to protect equipment from being stopped, so that the running reliability of the device is improved.
Further, a temperature sensor is arranged on the transformer and is in signal connection with the CPU; the temperature sensor can detect the temperature of the transformer, send signals to the CPU to receive the temperature value, calculate and judge, send out alarm signals when the temperature reaches the early warning value, send out stop signals when the temperature reaches the limit value and stop the equipment, so that the protection is carried out.
The beneficial effects of the utility model are as follows: the CPU receives the electric signals fed back by the devices in real time, the transformer transforms alternating current to serve as transmission main voltage and sends the transmission main voltage to two frame breakers in the breaker module, the main voltage is led to alternating current input of two direct current speed regulators in the speed regulating cabinet from the two frame breakers respectively and used as armature power supply of the direct current motor, armature output and excitation output of the switching cabinet are connected to the direct current motor, the direct current motor drives the rotary kiln to work, the rotary kiln calcines waste residues and produces cement, and the switching cabinet can switch the two paths of armature power supplies and the excitation power supply at any time.
The utility model adopts the CPU unit to carry out centralized control in the electric control room, so that the working personnel are far away from the production site, the working environment is ideal, the operation information of each device equipment can be fed back to the CPU in real time, the fault occurrence position can be rapidly positioned and the fault can be timely removed when the device is in fault, the degree of automation and digitalization is higher.
Drawings
FIG. 1 is a schematic diagram of the overall connection relationship of the present utility model.
In the figure: 1-a CPU; a 2-circuit breaker module; 3-a speed regulating cabinet; 31-a first direct current speed regulator; 32-an excitation module; 33-a second direct current speed regulator; 4-a switching cabinet; 41-armature switching knife; 42-exciting switching knife; 5-direct current motor; 6-a velometer; 7-a rotary kiln; 8-a speed protection sensor; 9-a transformer; 10-a temperature sensor; q1-a first frame breaker; q2-second frame circuit breaker.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in fig. 1, a device for rotary kiln switching control comprises a CPU1, a circuit breaker module 2, a speed regulating cabinet 3 and a switching cabinet 4, wherein the CPU1 is respectively connected with the circuit breaker module 2, the speed regulating cabinet 3 and the switching cabinet 4 in a signal manner, the circuit breaker module 2 comprises a first frame circuit breaker Q1 and a second frame circuit breaker Q2, the speed regulating cabinet 3 comprises a first direct current speed regulator 31 and a second direct current speed regulator 33, the switching cabinet 4 comprises an armature switching knife 41 and an excitation switching knife 42, the CPU1 is connected with a transformer 9, the transformer 9 is connected with the first frame circuit breaker Q1 and the second frame circuit breaker Q2 in parallel, the first frame circuit breaker Q1 is connected with the first direct current speed regulator 31, and the first direct current speed regulator 31 is connected with the armature switching knife 41 and the excitation switching knife 42 in parallel; the second frame circuit breaker Q2 is connected with a second dc speed regulator 33, the second dc speed regulator 33 is connected in parallel with an armature switching blade 41 and an excitation switching blade 42, the armature switching blade 41 is connected with a dc motor 5, the excitation switching blade 42 is connected with an excitation coil of the dc motor 5, the dc motor 5 is connected with a rotary kiln 7, and the rotary kiln 7 is connected with the CPU1 in a signal manner.
The first dc speed regulator 31 and the second dc speed regulator 33 are respectively connected to an excitation module 32.
The DC motor 5 is connected with a velometer 6, and the velometer 6 is respectively connected with a first DC speed regulator 31 and a second DC speed regulator 33 in a signal way.
The rotary kiln 7 is provided with a speed protection sensor 8, and the speed protection sensor 8 is in signal connection with the CPU 1.
The transformer 9 is provided with a temperature sensor 10, and the temperature sensor 10 is in signal connection with the CPU 1.
The first frame circuit breaker Q1 and the second frame circuit breaker Q2 are circuit breakers with remote control functions, rated frame grade current is 3200A, rated frame grade current is three-grade, drawer type, rated current is 2500A, alternating current 220V is selected as a secondary control power supply, six normally closed points with six normally open points are respectively connected with power supply indication, brake opening indication, brake closing indication, fault indication, remote control and the like.
The first direct current speed regulator 31 and the second direct current speed regulator 33 are of the model DCS880, can convert 400V alternating current incoming lines into direct current output, are direct current speed regulators with control panels, integrate corresponding switching value and analog value units and are used for receiving and sending switching value and analog value signals. The excitation module 32 is DCF803. The speed protection sensor 8 is a canister scan switch.
Before use, the breaker module 2 is switched on, after the direct current speed regulator is started, according to the actual requirement of rotary kiln production, parameters of the direct current speed regulator are recovered firstly, then parameters of some basic data of the direct current motor 5 are set, excitation and data of the direct current motor 5 are set according to the selected excitation type, the excitation is just to control voltage to change the magnetic field generated by the direct current motor 5, the rotating speed of the direct current motor 5 is changed, excitation is started to be automatically set, and self-setting data are recorded; the armature current is started to self-regulate, self-regulating data are recorded similarly, then a direct current speed regulator is started, the direct current motor 5 starts to rotate and run, the speed measuring gun is taken to measure the actual rotating speed of the direct current motor 5, the actual rotating speed is compared with the rotating speed fed back by the speed measuring machine 6, and fine adjustment and optimization can be carried out on the speed measuring machine 6 if necessary. In order to accurately analyze the operation condition of the device, the operation data of the device must be collected and analyzed, such as signals of speed setting, current feedback, rotating speed feedback and the like, the signals are converted into electric signals of 4-20 MA or 0-10V through a transmitter, and the electric signals are sent to a data analog quantity collection unit and fed back to the CPU1.
The CPU1 receives electric signals fed back by all devices in real time, the transformer 9 transforms 400V alternating current as transmission main voltage, the 400V main voltage is respectively sent to two frame breakers in the breaker module 2 through a bus bridge, the CPU1 can remotely switch on or switch off the two frame breakers, the 400V main voltage is respectively led to the alternating current input of two direct current speed regulators in the speed regulating cabinet 3 from the two frame breakers, the alternating current 400V voltage is converted into two paths of direct current armature voltage through the two direct current speed regulators to serve as armature power supplies of the direct current motor 5, the direct current speed regulators mainly regulate the rotating speed of the direct current motor 5, the rotating speed of the direct current motor 5 can be remotely set through the CPU1, and meanwhile, the direct current speed regulators are provided with two external excitation modules 32 to serve as two paths of excitation power supplies which are in one-to-one correspondence with the two paths of armature power supplies to serve as excitation power supplies of the direct current motor 5.
The switching cabinet 4 consists of an armature switching blade 41 and an excitation switching blade 42, and the armature switching blade 41 is provided with two paths of inputs and one path of outputs, the input of the armature switching blade 41 is connected with the output of the two paths of direct current speed regulators, and the output of the armature switching blade 41 is connected with an armature of the direct current motor 5 to serve as an armature power supply; the input of the excitation switching knife 42 is connected with the two external excitation modules 32, the output of the excitation switching knife 42 is connected with the direct current motor 5 in an excitation mode to serve as an excitation power supply, the direct current speed regulator is required to be synchronously switched with the external excitation modules 32 one by one during switching, knife switch position signals synchronously enter the CPU1, logic programs are written in the CPU1, the interlocking locking function of a switching loop is achieved, and reliable switching is guaranteed under the condition that the device reliably operates according to the operating state of the transmission device through the CPU 1.
The armature output and the excitation output of the two direct current speed regulators are connected with the armature input and the excitation input of the switching cabinet 1, the armature output and the excitation output of the switching cabinet 4 are connected to the direct current motor 5, the velometer 6 monitors the rotating speed of the direct current motor 5 and feeds back the rotating speed to the direct current speed regulators, a double closed loop control mode, namely current-rotating speed double closed loop, is adopted, the outer loop is in rotating speed closed loop control, the rotating speed is given to the direct current speed regulators through an upper computer, the velometer 6 monitors the speed of the direct current motor 5 in real time and feeds back the rotating speed to the direct current speed regulators, the direct current speed regulators regulate the rotating speed according to the deviation value generated by the given rotating speed and the fed back rotating speed, the current inner loop controls the deviation value generated by comparing the given value of the output current with the measured value of the current transformer, and the fed back of the current transformer, and the direct current speed regulators are rapidly controlled through the current deviation value, so that current fluctuation is reduced, the adjusting time is shortened, and the rotating speed control of the direct current motor 5 is more stable and faster, and operates at the given rotating speed.
The direct current motor 5 drives the rotary kiln 7 to work, when the rotary kiln 7 overspeed, the CPU1 sends out signals, the speed protection sensor 8 acts to enable equipment to start to stop, the rotary kiln 7 calcines waste residues to manufacture cement, and the switching cabinet 4 can switch two paths of armature power supplies and exciting power supplies at any time.
Taking the connection route of the first frame breaker Q1 and the first dc speed regulator 31 as an example for explanation, firstly checking whether all devices are in a normal state, confirming that armature output and excitation output of the switch cabinet 4 are all from the first dc speed regulator 31, after confirming that no error exists, remotely selecting the first frame breaker Q1 in the breaker module 2 by the CPU1 to close, at this time, starting to self-check whether equipment is in a normal state when the first dc speed regulator 31 is electrified, if a fault is prompted, checking the equipment to eliminate the fault, if no fault passes through the CPU1 to remotely set the rotating speed and starts the first dc speed regulator 31 in the speed regulator 3, outputting current to the dc motor 5, starting to rotate the dc motor 5, measuring the rotating speed of the dc motor 5 by the speed regulator 6 and feeding back to the first dc speed regulator 31, regulating the rotating speed of the dc motor 5 according to the value fed back by the speed regulator 6, enabling the speed of the dc motor 5 to reach a given value as soon as possible, driving 7 to produce cement, and if the rotary kiln 7 is overspeed, giving out a shutdown command by the CPU1, stopping the speed protection sensor 8 to drive the equipment to stop in a normal state, and then starting up the equipment after all the fault is confirmed.
Claims (5)
1. A device for rotary kiln switching control, characterized in that: the circuit breaker comprises a CPU (1), a circuit breaker module (2), a speed regulation cabinet (3) and a switching cabinet (4), wherein the CPU (1) is respectively connected with the circuit breaker module (2), the speed regulation cabinet (3) and the switching cabinet (4) in a signal mode, the circuit breaker module (2) comprises a first frame circuit breaker (Q1) and a second frame circuit breaker (Q2), the speed regulation cabinet (3) comprises a first direct current speed regulator (31) and a second direct current speed regulator (33), the switching cabinet (4) comprises an armature switching knife (41) and an excitation switching knife (42), the CPU (1) is connected with a transformer (9), the transformer (9) is connected with the first frame circuit breaker (Q1) and the second frame circuit breaker (Q2) in parallel, the first frame circuit breaker (Q1) is connected with the first direct current speed regulator (31), and the first direct current speed regulator (31) is connected with the armature switching knife (41) and the excitation switching knife (42) in parallel; the second frame circuit breaker (Q2) is connected with a second direct current speed regulator (33), the second direct current speed regulator (33) is connected with an armature switching knife (41) and an excitation switching knife (42) in parallel, the armature switching knife (41) is connected with a direct current motor (5), the excitation switching knife (42) is connected with an excitation coil of the direct current motor (5), the direct current motor (5) is connected with a rotary kiln (7), and the rotary kiln (7) is connected with a CPU (central processing unit) in a signal mode.
2. An apparatus for rotary kiln switching control according to claim 1, wherein: the first direct current speed regulator (31) and the second direct current speed regulator (33) are respectively connected with an excitation module (32).
3. A device for rotary kiln switching control according to claim 1 or 2, characterized in that: the direct current motor (5) is connected with a velometer (6), and the velometer (6) is respectively connected with a first direct current speed regulator (31) and a second direct current speed regulator (33) in a signal mode.
4. A device for rotary kiln switching control according to claim 3, characterized in that: the rotary kiln (7) is provided with a speed protection sensor (8), and the speed protection sensor (8) is connected with the CPU (1) through signals.
5. An apparatus for rotary kiln switching control according to claim 4, wherein: the transformer (9) is provided with a temperature sensor (10), and the temperature sensor (10) is in signal connection with the CPU (1).
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221261538U true CN221261538U (en) | 2024-07-02 |
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