CN214586527U - PLC-based modular dust removal electric control system for coke oven - Google Patents
PLC-based modular dust removal electric control system for coke oven Download PDFInfo
- Publication number
- CN214586527U CN214586527U CN202121173867.9U CN202121173867U CN214586527U CN 214586527 U CN214586527 U CN 214586527U CN 202121173867 U CN202121173867 U CN 202121173867U CN 214586527 U CN214586527 U CN 214586527U
- Authority
- CN
- China
- Prior art keywords
- plc
- circuit breaker
- contactor
- dust removal
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Coke Industry (AREA)
Abstract
The utility model discloses a modularization coke oven dust removal electrical system based on PLC, including total PLC controller, bin control unit, fan the control unit, low pressure distribution unit and auxiliary control unit and well accuse room DCS communication unit, each unit independent control constitutes a control of wholly accomplishing the coke oven and removing dust through the communication again in this system, and when the system operation, low pressure distribution unit is responsible for each unit distribution, and coke oven dust removal unit divide into local operational mode and long-range operational mode. The system improves the maintenance efficiency and quality of the dust removal electric control system, reduces the technical requirement on maintenance personnel and the maintenance cost, improves the overall stability and reliability of the coke oven dust removal system, has strong expansibility of the dust removal electric control system, can rapidly adapt to increasingly harsh environmental requirements, meets the requirement of a user on rapid upgrading and transformation of the existing coke oven dust removal system, and has extremely high system flexibility.
Description
Technical Field
The utility model relates to a coke oven dust removal technical field especially relates to a modularization coke oven dust removal electrical system based on PLC.
Background
The coke oven dust removal comprises machine side dust removal, coke side dust removal, coal charging dust removal and the like, and is used for collecting a large amount of harmful substances such as dust, smoke dust, tar and the like discharged in the production process of the coke oven. In order to meet the requirement of environmental protection and emission, the number of the bins of the dust collector is small, the number of the bins of the dust collector is eight, nine or more, and twenty or more, the size is large, the number of the equipment is large, the equipment is distributed, and the number of the bins of the ground station and the number and the type of the equipment in each bin are different due to different environmental protection indexes, different coke oven models, different arrangement space limitations and specific requirements of owners in China. In the prior art, a dust removal power distribution cabinet and a PLC cabinet are centrally placed in a ground low-voltage power distribution room, a field operation box and a connection terminal box are placed at the nearby position of ground station equipment, and the power distribution cabinet and the PLC cabinet are connected with the field equipment, the field operation box and the terminal box through cables so as to realize the dust removal control of a coke oven, or the power distribution cabinet and the PLC cabinet are divided into a plurality of small systems according to functions, and the small systems are connected through network cables so as to realize the dust removal control of the coke oven. The method is lack of a modular electric control product structure for coke oven dust removal, and the overall reliability and expansibility of a coke oven dust removal electric control system, and cannot effectively improve the efficiency, save the time, reduce the cost and reduce the error rate.
SUMMERY OF THE UTILITY MODEL
According to the problems existing in the prior art, the utility model discloses a modularization coke oven dust removal electrical system based on PLC, the concrete scheme includes:
the main PLC is used for communicating with a superior DCS of the coking plant and controlling the interlocking and the sequence of the whole dust removal system;
the bin control unit comprises a rapping motor circuit breaker, a rapping motor circuit contactor, a format valve circuit breaker, a format valve circuit contactor, a scraper circuit breaker, a scraper circuit contactor, a first PLC, a pulse valve control relay, an off-line valve control relay and control and signal equipment; the one end of rapping motor circuit breaker is connected with the power, the other end is connected with rapping motor circuit contactor, the one end of format valve circuit breaker is connected with the power, the other end is connected with format valve circuit contactor, the one end of scraper circuit breaker is connected with the power, the other end is connected with scraper circuit contactor, rapping motor circuit breaker, rapping motor circuit contactor, format valve circuit breaker, format valve circuit contactor, scraper circuit breaker, scraper circuit contactor are connected with a first PLC, the output end of the first PLC is connected with pulse valve control relay, off-line valve control relay and control and signal equipment;
the fan control unit comprises a cooling fan loop breaker, a cooling fan loop contactor, a cooling water valve loop breaker, a cooling water valve loop contactor, a switch, a control and signal device and a second PLC, one end of the cooling fan loop circuit breaker is connected with the power supply, the other end of the cooling fan loop circuit breaker is connected with the cooling fan loop contactor, the cooling fan loop contactor is connected with the cooling fan through a cable, the cooling fan loop circuit breaker and the cooling fan loop contactor are connected with a second PLC and used for detecting the state information of the circuit breaker and the contactor, one end of the cooling water valve loop breaker is connected with a power supply, the other end of the cooling water valve loop breaker is connected with the cooling water valve loop contactor, the cooling water valve loop breaker and the cooling water valve loop contactor are connected with a second PLC, the control and signal equipment is connected with a second PLC, one end of the switch is connected with a power supply, and the other end of the switch is connected with the PLC;
the low-voltage distribution unit is used for distributing power to the total PLC, the cabin control unit and the fan control unit and comprises a plurality of cabin unit distribution circuit breakers, a PLC master control unit distribution circuit breaker, an auxiliary control unit distribution circuit breaker and a UPS;
the auxiliary control unit is used for supplying power and controlling illumination power distribution equipment, maintenance power box power distribution equipment, power distribution room air conditioner power distribution and auxiliary equipment, and comprises an illumination power distribution circuit breaker, an air conditioner power distribution circuit breaker, a maintenance power distribution circuit breaker and an auxiliary equipment power distribution circuit breaker;
and the central control room DCS communication unit integrates the main PLC controller, the bin control unit and the fan control unit in an industrial Ethernet communication mode to form a coke oven dust removal control system.
Due to the adoption of the technical scheme, the utility model provides a pair of modularization coke oven dust removal electrical system based on PLC, this system divide into several unit modularization control system with the bin as the unit with coke oven dust removal electrical system, each unit has confirm with independent function, standard interface and interchangeability general hardware and software unit, thereby realize the comprehensive control process of coke oven dust removal through total PLC controller, bin control unit, fan control unit, low pressure distribution unit, auxiliary control unit, well accuse room DCS communication unit; therefore, the system improves the design efficiency of the dust removal electric control system, simplifies the design program and greatly shortens the design, purchase and installation periods of products; in addition, the system improves the design efficiency of the dust removal electric control system, simplifies the design program and greatly shortens the design, purchase and installation periods of products; the system also improves the maintenance efficiency and quality of the dust removal electric control system, reduces the skill requirement on maintenance personnel and reduces the maintenance cost; finally, the dust removal electric control system is strong in expansibility, can rapidly adapt to increasingly harsh environmental protection requirements, meets the requirement of users on rapid upgrading and reconstruction of the existing coke oven dust removal system, and has extremely high system flexibility.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is an overall structure diagram of a PLC-based modular coke oven dust removal electric control system of the utility model;
fig. 2 is a block diagram of the structure of the middle chamber control unit of the present invention;
fig. 3 is a block diagram of the structure of the fan control unit of the present invention;
fig. 4 is a block diagram of the structure of the middle and low voltage distribution unit of the present invention;
fig. 5 is a block diagram of the auxiliary control unit according to the present invention;
FIG. 6 is a control flow chart of the modular coke oven dust removal electric control system based on PLC in the utility model.
Detailed Description
For making the technical solution and the advantages of the present invention clearer, the following combines the drawings in the embodiments of the present invention, to the technical solution in the embodiments of the present invention is clear and complete description:
the modular dust removal electric control system based on the PLC shown in the figure 1 comprises a main PLC controller, a bin control unit, a fan control unit, a low-voltage power distribution unit, an auxiliary control unit and a central control room DCS communication unit.
Furthermore, the general PLC is responsible for communicating with a superior DCS of the coking plant, communicating with the cabin control unit and the fan control unit, and interlocking and sequential control of the whole dust removal system, and contains a programmable logic controller and a communication device in a middle-high level range, and the programmable logic controller and the communication device are connected with the cabin control unit and the fan control unit through network cables.
Furthermore, the bin control unit is responsible for controlling a pulse valve, an off-line valve, an ash bin level meter, a rapping motor, an ash discharge valve (or a pneumatic conveying AV pump) and a scraper of a single dust collector bin, the single line diagram of the bin control unit is shown in figure 1, the dust collector is divided into N bins, the number and the type of electrical equipment of each bin are the same, and 1# to N # N identical bin control units are arranged. The bin control unit comprises an electric element such as a rapping motor circuit breaker, a rapping motor circuit contactor, a format valve circuit breaker, a format valve circuit contactor, a scraper circuit breaker, a scraper circuit contactor, a first PLC, a pulse valve control relay, an off-line valve control relay, a control and signal device and the like, and is packaged in a double-layer door control box with the protection grade of IP65 and installed below each dust remover bin on site. The upper end of the circuit breaker of the rapping motor is connected with a power supply, the lower end of the circuit breaker of the rapping motor is connected with the upper end of the circuit contactor of the rapping motor, and the lower end of the circuit contactor of the rapping motor is connected with the rapping motor, the format valve and the scraper conveyor and used for supplying power to the motor; the rapping motor circuit breaker and the rapping motor circuit contactor auxiliary contacts are connected with a first PLC and used for displaying the states of the breaker and the contactor; the pulse valve control electricity-saving device and the off-line valve control relay are connected with the first PLC, the control and signal device is connected with the first PLC, and all electrical equipment on a single bin is controlled by triggering the control and signal device. The first PLC adopts a low-middle-grade programmable logic controller, an operation button or a touch screen is installed on an inner door of the operation box, the cabin control unit downloads programs in batch before leaving a factory, and all electrical equipment of a single cabin can be operated independently after field installation is completed. The structure of the cabin control is shown in figure 2.
The fan control unit is responsible for collecting temperature and amplitude signals of the fan and the motor, collecting flow and pressure signals of the cooling water flowmeter, collecting pressure signals of an inlet and an outlet of the dust remover, collecting pressure signals of an air source, and simultaneously controlling the cooling water electric valve, the main fan motor heat dissipation fan and the main fan motor frequency converter. The fan control unit comprises a cooling fan loop circuit breaker, a cooling fan loop contactor, a cooling water valve loop circuit breaker, a cooling water valve loop contactor, a switch, control and signal equipment and a second PLC, and is packaged in a double-layer door control box with the protection grade of IP65 and installed nearby the dust removal main fan. The upper end of a cooling fan loop circuit breaker is connected with a power supply, the lower end of the cooling fan loop circuit breaker is connected with the upper end of a cooling fan loop contactor, the lower end of the cooling fan loop contactor is connected with a cooling fan through a cable, auxiliary contacts of the cooling fan loop circuit breaker and the cooling fan loop contactor are connected with a second PLC and used for detecting states of the circuit breaker and the contactor, control and signal equipment is connected with the second PLC and used for controlling the contactor and displaying states of the contactor and the circuit breaker, the control principle of a cooling water valve is the same as that of the cooling fan, and the switch is connected with the second PLC through a network cable and used for communicating with other units. The normal during operation is responsible for gathering fan and motor temperature, amplitude signal, gathers cooling water flowmeter flow, pressure signal, gathers dust remover exit pressure signal, gathers air supply pressure signal, controls cooling water electric valve, main fan motor cooling fan, controls main fan motor converter. The second PLC adopts a low-middle level programmable logic controller, control and signal equipment is installed on inner layers of the operation box, programming is completed before a fan control system leaves a factory, control of the dust removal main fan can be independently completed after field installation is completed, and a fan control structure diagram is shown in an attached figure 3.
Further, as shown in fig. 4, the low-voltage power distribution unit is used for distributing power to the general PLC controller, the cabin control unit and the fan control unit, and the low-voltage power distribution unit includes a plurality of cabin unit power distribution circuit breakers, a PLC main control unit power distribution circuit breaker, an auxiliary control unit power distribution circuit breaker and a UPS.
Further, as shown in fig. 5, the auxiliary control unit is used for supplying power and controlling the lighting distribution equipment, the maintenance power box distribution equipment, the distribution room air conditioner distribution and the auxiliary equipment, and the auxiliary control unit comprises a lighting distribution circuit breaker, an air conditioner distribution circuit breaker, a maintenance power distribution circuit breaker and an auxiliary equipment distribution circuit breaker.
Furthermore, the DCS communication unit of the central control room is used for integrating the total PLC, the bin control unit and the fan control unit in an industrial Ethernet communication mode to form a coke oven dust removal control system.
The utility model discloses a modularization coke oven dust removal electrical system based on PLC mainly comprises above six units, and each unit independent control constitutes a control of wholly accomplishing coke oven dust removal again through the communication, and it constitutes and sees figure 5. When the system operates, the low-voltage power distribution unit is responsible for distributing power to each unit, the coke oven dust removal unit is divided into a local operation mode and a remote operation mode, and in the local control mode, the bin control unit and the fan control unit respectively and independently work and can only monitor and control all equipment in the system; in a remote control mode, after the system is started, the 1# to N bin control units and the fan control unit operate and receive starting and stopping signals of all equipment in the system, which are sent by the master PLC controller, and send state signals and limit signals of the system to the master PLC controller, and after the master PLC controller receives the state signals and the limit signals, the master PLC controller is responsible for issuing starting and stopping commands to all the units according to program logic and is responsible for interlocking, sequential control and monitoring of the whole coke oven dust removal electric control system, the communication system operates and uploads the state of the coke oven dust removal electric control system to a plant DCS (distributed control system), so that the state monitoring of coke oven dust removal is completed, and a control flow diagram of the state monitoring system is shown in an attached figure 6.
The utility model discloses a PLC-based modular coke oven dust removal electric control system, which improves the design efficiency of the dust removal electric control system, simplifies the design procedure, and greatly shortens the design, purchase and installation periods of products; in addition, the system improves the maintenance efficiency and quality of the dust removal electric control system, reduces the technical requirements on maintenance personnel and the maintenance cost, improves the overall stability and reliability of the coke oven dust removal system, has strong expansibility, can rapidly adapt to increasingly harsh environmental requirements, meets the requirement of users on rapid upgrading and reconstruction of the existing coke oven dust removal system, and has extremely high system flexibility.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (1)
1. A modular coke oven dust removal electric control system based on PLC is characterized by comprising:
the main PLC is used for communicating with a superior DCS of the coking plant and controlling the interlocking and the sequence of the whole dust removal system;
the bin control unit comprises a rapping motor circuit breaker, a rapping motor circuit contactor, a format valve circuit breaker, a format valve circuit contactor, a scraper circuit breaker, a scraper circuit contactor, a first PLC, a pulse valve control relay, an off-line valve control relay and control and signal equipment; the one end of rapping motor circuit breaker is connected with the power, the other end is connected with rapping motor circuit contactor, the one end of format valve circuit breaker is connected with the power, the other end is connected with format valve circuit contactor, the one end of scraper circuit breaker is connected with the power, the other end is connected with scraper circuit contactor, rapping motor circuit breaker, rapping motor circuit contactor, format valve circuit breaker, format valve circuit contactor, scraper circuit breaker, scraper circuit contactor are connected with a first PLC, the output end of the first PLC is connected with pulse valve control relay, off-line valve control relay and control and signal equipment;
the fan control unit comprises a cooling fan loop breaker, a cooling fan loop contactor, a cooling water valve loop breaker, a cooling water valve loop contactor, a switch, a control and signal device and a second PLC, one end of the cooling fan loop circuit breaker is connected with the power supply, the other end of the cooling fan loop circuit breaker is connected with the cooling fan loop contactor, the cooling fan loop contactor is connected with the cooling fan through a cable, the cooling fan loop circuit breaker and the cooling fan loop contactor are connected with a second PLC and used for detecting the state information of the circuit breaker and the contactor, one end of the cooling water valve loop breaker is connected with a power supply, the other end of the cooling water valve loop breaker is connected with the cooling water valve loop contactor, the cooling water valve loop breaker and the cooling water valve loop contactor are connected with a second PLC, the control and signal equipment is connected with a second PLC, one end of the switch is connected with a power supply, and the other end of the switch is connected with the PLC;
the low-voltage distribution unit is used for distributing power to the total PLC, the cabin control unit and the fan control unit and comprises a plurality of cabin unit distribution circuit breakers, a PLC master control unit distribution circuit breaker, an auxiliary control unit distribution circuit breaker and a UPS;
the auxiliary control unit is used for supplying power and controlling illumination power distribution equipment, maintenance power box power distribution equipment, power distribution room air conditioner power distribution and auxiliary equipment, and comprises an illumination power distribution circuit breaker, an air conditioner power distribution circuit breaker, a maintenance power distribution circuit breaker and an auxiliary equipment power distribution circuit breaker;
and the central control room DCS communication unit integrates the main PLC controller, the bin control unit and the fan control unit in an industrial Ethernet communication mode to form a coke oven dust removal control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121173867.9U CN214586527U (en) | 2021-05-28 | 2021-05-28 | PLC-based modular dust removal electric control system for coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121173867.9U CN214586527U (en) | 2021-05-28 | 2021-05-28 | PLC-based modular dust removal electric control system for coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214586527U true CN214586527U (en) | 2021-11-02 |
Family
ID=78363060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121173867.9U Active CN214586527U (en) | 2021-05-28 | 2021-05-28 | PLC-based modular dust removal electric control system for coke oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214586527U (en) |
-
2021
- 2021-05-28 CN CN202121173867.9U patent/CN214586527U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103513167B (en) | Based on the switch partial discharge state monitoring apparatus of Board of Distributed Network Constructed | |
| CN201763655U (en) | Group control system for monitoring fan filter unit (FFU) fan | |
| CN103760882A (en) | Complete redundancy testing apparatus control system of direct-current valve cooling unit | |
| CN201417966Y (en) | GIS intelligent control cabinet | |
| CN104242472B (en) | A kind of railway station low buckling distribution intelligent monitor system | |
| CN102050316A (en) | Power line type field bus comprehensive control system for coal handling system of heat power plant | |
| CN205265349U (en) | Little electric wire netting intelligence measurement and control device | |
| CN103107595B (en) | Substation automation system in prefabricated transformer substation | |
| CN208028657U (en) | A kind of intelligent ups power control system | |
| CN113156884B (en) | Modularized coke oven dust removal electric control system based on PLC | |
| CN201256298Y (en) | Transforming plant voltage intelligent reactive dynamic compensation device based on field bus | |
| CN110104441A (en) | The defeated grey stored program controlled of boiler dry ash handling system | |
| CN112114554A (en) | Wireless control system and method for power supply on-off of power equipment | |
| CN214586527U (en) | PLC-based modular dust removal electric control system for coke oven | |
| CN209590153U (en) | 10kV switchgear automatic phase checking device | |
| CN101136559A (en) | Power supply intelligentized simulation teaching system | |
| CN104734058B (en) | Electronic-control integration device of oil field united station | |
| CN203720635U (en) | Vertical automatic filter press control system | |
| CN2914158Y (en) | Low-pressure electric automatization monitoring system | |
| CN202268745U (en) | GIS (gas insulated switchgear) intelligent control cubicle | |
| CN201464907U (en) | PLC control system GIS of optical fiber ring network | |
| CN110737238A (en) | Sludge drying control system and control method | |
| CN201259622Y (en) | Remote digital monitoring system | |
| CN210666460U (en) | Sludge drying control system | |
| CN204563405U (en) | A kind of coal preparation plant Fire Control Cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |