CN215599542U - Kiln fan control system - Google Patents
Kiln fan control system Download PDFInfo
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- CN215599542U CN215599542U CN202121187052.6U CN202121187052U CN215599542U CN 215599542 U CN215599542 U CN 215599542U CN 202121187052 U CN202121187052 U CN 202121187052U CN 215599542 U CN215599542 U CN 215599542U
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Abstract
The utility model discloses a kiln fan control system which comprises a computer, a PLC (programmable logic controller) master station, a communication module, at least one PLC slave station and at least one control module, wherein the computer is connected with the PLC, the computer and the PLC master station are arranged in the control station, the PLC slave stations are correspondingly connected with the control modules one by one, the PLC slave stations and the control modules are arranged beside a kiln, and the PLC master station is connected with the PLC slave stations through the communication module; each control module comprises at least one frequency converter and at least one fan, the frequency converters correspond to the fans one by one, one end of each frequency converter is connected with the corresponding fan, and the other end of each frequency converter is connected with the corresponding PLC slave station. The utility model can accurately control the fan through the arrangement of the master station and the slave station, saves control lines and signal lines and is convenient to operate.
Description
Technical Field
The utility model relates to the technical field of kilns, in particular to a kiln fan control system.
Background
The roller kiln of the ceramic production line is divided into a preheating section, a sintering section, a quenching section and a cooling section according to the process structure, and the whole kiln is 200-300 meters in length and more than 500 meters in length along with the process requirements.
As shown in fig. 1, each section of the kiln is provided with 1 or more fans, an electric control cabinet is arranged beside the fans, a frequency converter is arranged in the electric control cabinet, the electric control cabinet carries out local start-stop control in a relay control mode, and start-stop operation signals and fault signals are pulled back to a kiln tail control chamber through cables.
As shown in fig. 2, the speed of the fan is adjusted by a remote control frequency converter through a digital controller installed in a control room.
From the above, in the existing design, each fan and the control cabinet are in a dispersed state, are basically in positions close to the fans, are swung open along the trend of the kiln, the control line and the signal line of each fan and the control cabinet are independently pulled back to the control room, the lines are various, and the cable cost and the manual wire pulling cost are high; meanwhile, each fan is required to be correspondingly provided with a digital controller to control the speed of the frequency converter in a control room, 4-20mA feedback signals and 0-10V voltage are adopted to control the frequency of the frequency converter in a control mode, the frequency converter cannot be accurately controlled by the digital controller due to the fact that the line distance is long, electromagnetic interference and signal attenuation problems inevitably occur, and difficulty is increased for work of field debugging personnel due to the fact that digital control needs to be calibrated with the frequency converter one by one and the like.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a kiln fan control system, which can realize accurate and rapid control of a fan, save control lines and signal lines and be more convenient for operators to operate.
In order to solve the technical problems, the utility model provides a kiln fan control system which comprises a computer, a PLC (programmable logic controller) master station, a communication module, at least one PLC slave station and at least one control module, wherein the computer is connected with the PLC, the computer and the PLC master station are arranged in the control station, the PLC slave stations are correspondingly connected with the control modules one by one, the PLC slave stations and the control modules are arranged beside a kiln, and the PLC master station is connected with the PLC slave stations through the communication module; each control module comprises at least one frequency converter and at least one fan, the frequency converters correspond to the fans one by one, one end of each frequency converter is connected with the corresponding fan, and the other end of each frequency converter is connected with the corresponding PLC slave station.
As an improvement of the above scheme, the communication module comprises a network switch and at least one transceiver module, and the transceiver modules correspond to the PLC slave stations one to one; each transceiver module comprises a control end transceiver and a kiln end transceiver, the control end transceiver is connected with the network switch, and the kiln end transceiver is connected with a corresponding PLC slave station.
As an improvement of the scheme, the control end transceiver and the kiln end transceiver are both optical fiber transceivers, and the control end transceiver and the kiln end transceiver are in optical fiber communication.
As an improvement of the scheme, the PLC slave station is provided with an Ethernet interface and is connected with the kiln end transceiver through the Ethernet interface.
As an improvement of the scheme, the frequency converter is connected with the PLC slave station through a 485 communication interface.
As an improvement of the scheme, the frequency converter and the fan are divided into a plurality of control modules along the length direction of the kiln according to the length of the kiln, the position of the fan and the position of the frequency converter.
As an improvement of the scheme, the kiln fan control system further comprises at least one control cabinet used for packaging the control modules, and the control modules correspond to the control cabinets one to one.
The beneficial effects of the implementation of the utility model are as follows:
the utility model combines a computer, a PLC master station, a communication module, a PLC slave station, a frequency converter and a fan to form a kiln fan control system with a unique structure, and specifically comprises the following steps:
according to the utility model, a digital controller is omitted, and the communication module and the PLC slave station are introduced, so that the frequency converter directly exchanges data with the PLC slave station without the need of the digital controller for calibration, the operation is more convenient, and the user experience is greatly improved;
according to the utility model, the frequency converters and the fans are controlled in a grouped and centralized manner, and are packaged in a unified manner through the control cabinet, so that a large number of control lines and signal lines are saved, the labor cost is reduced, and the management is easy;
furthermore, the communication module of the utility model adopts optical fiber communication to realize long-distance transmission, so that the problems of signal interference and attenuation can be solved, and the control precision and the feedback speed are greatly improved.
Drawings
FIG. 1 is a schematic diagram of a prior art kiln blower control system;
FIG. 2 is another schematic diagram of a prior art kiln blower control system;
FIG. 3 is a schematic structural diagram of a first embodiment of a kiln fan control system according to the present invention;
fig. 4 is a schematic structural diagram of a kiln fan control system according to a second embodiment of the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 3, fig. 3 shows a first embodiment of a control system of a kiln fan 52 according to the present invention, which comprises a computer 1, a PLC master station 2, a communication module 3, at least one PLC slave station 4, and at least one control module 5; the computer 1 is connected with the PLC, the computer 1 and the PLC master station 2 are arranged in the control station, the PLC slave stations 4 are correspondingly connected with the control modules 5 one by one, the PLC slave stations 4 and the control modules 5 are arranged beside the kiln, and the PLC master station 2 is connected with the PLC slave stations 4 through the communication module 3; each control module 5 comprises at least one frequency converter 51 and at least one fan 52, the frequency converters 51 correspond to the fans 52 one by one, one end of each frequency converter 51 is connected with the corresponding fan 52, and the other end of each frequency converter 51 is connected with the corresponding PLC slave station 4. Preferably, the PLC master station 2 may adopt an ohm dragon master station CJ series, and the PLC slave station 4 may adopt an ohm dragon slave station CJ series, but not limited thereto, as long as an ethernet port is provided.
In the prior art, the speed of the fan 52 is remotely controlled by the frequency converter 51 through a digital controller installed in a control room, so that the problems of electromagnetic interference and signal attenuation are easily caused, and the digital controller needs to perform operations such as one-to-one calibration with the frequency converter 51, thereby increasing the difficulty for the work of field debugging personnel. Compared with the prior art, the utility model does not need to be provided with a digital controller, thereby saving the control mode of the digital controller; meanwhile, the PLC slave station 4 and the communication module 3 are added, the frequency converter 51 directly exchanges data with the PLC slave station 4, a digital controller is not needed for checking, the operation is more convenient, and the user experience is greatly improved.
In addition, the frequency converter 51 and the fan 52 are divided into a plurality of control modules 5, each control module 5 corresponds to one PLC slave station 4, the connection between the PLC slave stations 4 and the PLC master station 2 is established through the communication module 3, the PLC master station 2 integrates all data to the computer 1, man-machine conversation is achieved, control and signal collection of the frequency converter 51 are achieved, grouping centralized control of the frequency converter 51 and the fan 52 is achieved, a large number of control lines and signal lines are saved, a digital controller is omitted, labor cost is reduced, the cost of the added PLC slave stations 4 and the cost of the communication module 3 are half of the original cost, and equipment cost is greatly reduced.
Further, the frequency converter 51 and the fan 52 are arranged along the length direction of the kiln, and when the frequency converter 51 and the fan 52 are grouped, the frequency converter 51 and the fan 52 can be divided into a plurality of control modules 5 along the length direction of the kiln according to the length of the kiln, the position of the fan 52 and the position of the frequency converter 51, so that the flexibility is strong.
For example, a kiln with the length of 300m can be divided into 6 sections along the length scheme, wherein the length of each section is 50m, accordingly, the frequency converter 51 and the fan 52 in the same section are taken as a control module 5 and are connected into the same PLC slave machine for data exchange, so that a control signal, an alarm signal and a speed signal of the frequency converter 51 are transmitted to the PLC slave station 4, and then the PLC slave station 4 transmits the data back to the PLC master station 2 through the communication module 3 for data exchange with the computer 1, thereby realizing start and stop control, speed adjustment and alarm signal acquisition of the fan 52 in a control room.
In addition, the kiln fan 52 control system further comprises at least one control cabinet for packaging the control modules 5, and the control modules 5 correspond to the control cabinets one to one. Therefore, all the frequency converters 51 and the fans 52 in the same control module 5 are integrated into one control cabinet, so that the grouping encapsulation of the frequency converters 51 and the fans 52 is realized, and the management is easy.
Correspondingly, the frequency converter 51 is connected with the PLC slave station 4 through a 485 communication interface. It should be noted that the frequency converter 51 may be address-numbered, and the speed data exchange between the PLC slave station 4 and the frequency converter 51 is realized through the 485 communication interface.
Referring to fig. 4, fig. 4 shows a second embodiment of the control system of the kiln fan 52 of the present invention, which is different from the first embodiment shown in fig. 3, in this embodiment, the communication module 3 includes a network switch 31 and at least one transceiver module, and the transceiver modules correspond to the PLC slave stations 4 one to one; each transceiver module comprises a control end transceiver 32 and a kiln end transceiver 33, the control end transceiver 32 is connected with the network switch 31, and the kiln end transceiver 33 is connected with the corresponding PLC slave station 4.
In the prior art, each frequency converter 51 is connected with a corresponding digital controller through a cable, so that the number of lines is large, and the cost of the cable and the cost of manual wire pulling are large. Different from the prior art, the utility model can realize the remote transmission of signals by adopting the network switch 31, the control end transceiver 32 and the kiln end transceiver 33, and has strong stability.
Further, the control end transceiver 32 and the kiln end transceiver 33 are both optical fiber transceivers, and the control end transceiver 32 and the kiln end transceiver 33 are in optical fiber communication. Therefore, the utility model adopts optical fiber communication, can solve the problems of signal interference and attenuation, and greatly improves the control and feedback speed.
Correspondingly, an ethernet interface is arranged on the PLC slave station 4, and the PLC slave station 4 is connected with the kiln end transceiver 33 through the ethernet interface. Specifically, since the PLC slave station 4 is configured with an ethernet communication mode, the kiln transceiver 33 can convert data from ethernet signals into optical fiber signals, and the control transceiver 32 installed in the control room can convert data from optical fiber signals into ethernet signals; by installing the network switch 31, the signals of the PLC slave stations 4 realize data exchange with the PLC master station 2 through the network switch 31, and realize master and slave station data exchange; in addition, the PLC master station 2 exchanges data with the computer 1, so that the computer 1 can collect signals for controlling, alarming and speed of each frequency converter 51 through the PLC master station 2, thereby realizing control and man-machine exchange.
From the above, the present invention combines the computer 1, the PLC master station 2, the network switch 31, the control end transceiver 32, the kiln end transceiver 33, the PLC slave station 4, the frequency converter 51, and the fan 52 to form a kiln fan 52 control system with a unique structure, specifically:
according to the utility model, by omitting a digital controller and introducing the network switch 31, the control end transceiver 32, the kiln end transceiver 33 and the PLC slave station 4, the frequency converter 51 directly exchanges data with the PLC slave station 4 without the need of checking the digital controller, so that the operation is more convenient, and the user experience is greatly improved;
according to the utility model, the frequency converter 51 and the fan 52 are grouped and centralized controlled, and are uniformly packaged through the control cabinet, so that a large number of control lines and signal lines are saved, the labor cost is reduced, and the management is easy;
the utility model adopts optical fiber communication to realize long-distance transmission, can solve the problems of signal interference and attenuation, and greatly improves the control and feedback speed.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (7)
1. A kiln fan control system is characterized by comprising a computer, a PLC (programmable logic controller) master station, a communication module, at least one PLC slave station and at least one control module, wherein the computer is connected with a PLC, the computer and the PLC master station are arranged in a control station, the PLC slave stations and the control module are correspondingly connected one by one, the PLC slave stations and the control module are arranged beside a kiln, and the PLC master station and the PLC slave stations are connected through the communication module;
each control module comprises at least one frequency converter and at least one fan, the frequency converters correspond to the fans one by one, one end of each frequency converter is connected with the corresponding fan, and the other end of each frequency converter is connected with the corresponding PLC slave station.
2. The kiln fan control system of claim 1, wherein the communication module comprises a network switch and at least one transceiver module, and the transceiver modules correspond to the PLC slave stations one to one;
each transceiver module comprises a control end transceiver and a kiln end transceiver, the control end transceiver is connected with the network switch, and the kiln end transceiver is connected with a corresponding PLC slave station.
3. The kiln fan control system of claim 2, wherein the control end transceiver and the kiln end transceiver are both optical fiber transceivers, and the control end transceiver and the kiln end transceiver communicate with each other through optical fibers.
4. The kiln fan control system of claim 3, wherein the PLC slave station is provided with an Ethernet interface, and the PLC slave station is connected with the kiln-end transceiver through the Ethernet interface.
5. The kiln fan control system of claim 1, wherein the frequency converter is connected to the PLC slave station via a 485 communication interface.
6. The kiln fan control system of claim 1, wherein the frequency converter and the fan are divided into a plurality of control modules along the length of the kiln based on the length of the kiln, the position of the fan, and the position of the frequency converter.
7. The kiln fan control system of claim 1, further comprising at least one control cabinet for enclosing the control modules, the control modules corresponding to the control cabinets one-to-one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121187052.6U CN215599542U (en) | 2021-05-28 | 2021-05-28 | Kiln fan control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121187052.6U CN215599542U (en) | 2021-05-28 | 2021-05-28 | Kiln fan control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215599542U true CN215599542U (en) | 2022-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121187052.6U Active CN215599542U (en) | 2021-05-28 | 2021-05-28 | Kiln fan control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215599542U (en) |
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2021
- 2021-05-28 CN CN202121187052.6U patent/CN215599542U/en active Active
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