| This subject comes from Shanxi Coal Group's major technology development project "Establishment of Mine Automatic Drainage System"(Project Number: 20180425-2),which is aimed at the low level of automation and intelligent management of the mine drainage system,as well as the failure rate and operation and maintenance High,difficult to achieve "unmanned or few people on duty" operation and other issues raised.Therefore,the development of a set of intelligent drainage monitoring and monitoring system suitable for centralized water storage in different levels of mines can improve the intelligent operation and maintenance level of the mine drainage system,realize the "unattended or few people on duty" of the drainage system,and improve the efficiency and safety of coal mine production.Benefits have very important practical significance.This paper takes the Jinping Group Changping Mine Panel and the central water storage bin as the research objects,proposes a control strategy based on monitoring parameters,designs the vacuum pipeline reforming scheme and system software and hardware scheme,and develops a set of mines suitable for different water levels.Intelligent drainage monitoring and monitoring system for centralized water storage.The specific research contents are as follows:On the basis of understanding the development trend of coal mine automation control systems and safety monitoring technologies at home and abroad,fully investigated the horizontal position and hardware con Figureuration of each centralized water tank,carefully analyzed the operation mode and working principle of the drainage unit,and formulated the vacuum pipeline reform Scheme,designed the overall layout of the intelligent drainage system and hardware and software solutions.The feasibility of judging whether the centrifugal pump is started normally by current parameters and the control strategy for intelligent management of centrifugal pump load based on running time parameters are thoroughly studied.Industrial tests have verified the high feasibility of the application of the control strategy and improved the system reliability and intelligence ? level.According tohis topic comes from the Shanxi Province Jinmei Group'smajor scientific and technological development project "Establishment of Mine Automatic Drainage System"(Project Number: 20180425-2),which is aimed at the mine drainage system automation,low level of intelligent management and control,high failure rate and operation and maintenance The workload is large,and it is difficult to realize the problems of "unattended or few people on duty" operation.Therefore,the development of a set of intelligent drainage monitoring and monitoring system suitable for centralized water storage in different levels of mines will improve the intelligent operation and maintenance level of the mine drainage system,realize the "unattended or few people on duty" of the drainage system,and improve the production efficiency and safety of coal mines.Benefits have very important practical significance.This paper takes the central and panel centralized water tanks of Changping Mine of Jinmei Group as the research object,puts forward a control strategy based on monitoring parameters,designs the vacuum pipeline reforming scheme and system software and hardware scheme,and develops a set of mines suitable for different water levels.The intelligent drainage monitoring and monitoring system of the centralized water storage,the specific research contents are as follows:On the basis of comprehensively grasping the current status and development trends of relevant technologies at home and abroad,combined with the current hardware configuration and equipment layout of each water tank in Changping Mine,a vacuum pumping pipeline transformation plan was developed,and the software and hardware plan of the intelligent drainage system was designed.The diagnosis strategy of whether the centrifugal pump based on the current parameter starts normally and the intelligent management and control strategy of the drainage unit based on the multi-point liquid level and running time are provided,which provides the theory and program foundation for the design of the intelligent and automatic drainage system of the mine.According to the overall design plan of the system,combined with the actual working environment of the mine water tank,the selection of the sensor for the signal layer of the centralized water tank monitoring and the selection of the monitoring point were completed,the external structure of the underground monitoring device was designed,and the electric control box was planned.Thespatial layout of the selected PLC CPU and configuration module,equipped with human-machine interactive cabinet screen and UPS power supply device,explained the electrical design principles of the internal and external control equipment power supply circuit,and completed the ground monitoring based on the configuration system The hardware design of the device.On the basis of the established hardware system,combined with the functional requirements of the system,the secondary network control structure of the lower computer with PLC as the core and the upper computer with Kingview as the core is determined.The modular programming of the main-subroutine nesting is used to complete the development of the monitoring program of the lower computer.Including data processing subroutines,logic control subroutines,fault protection and alarm subroutines,and power-down holding subroutines,and designed a human-computer interactive screen program.The monitoring program of the host computer uses screen development and script function writing as development methods.It has developed functions such as storage and analysis of system monitoring information,historical curve query,and report generation.It has developed centralized control,remote control,video,and drainage simulation of centralized water tanks.Monitoring function.According to the characteristics of the hardware circuit and the secondary network control structure,the system uses multi-protocol communication.The on-site monitoring equipment adopts MODBUS on-site communication network to realize the monitoring and control of pressure,flow and electric gate valve;MPI communication is adopted to realize the communication between PC programming equipment and PLC;TCP/IP Ethernet communication is adopted to realize the underground and surface Reliable communication of monitoring equipment;OPC communication is adopted to realize the collection of motor current and voltage data.In the laboratory,the PLC monitoring equipment and programs of the developed system were simulated and jointly debugged,and the experiment verified the overall design requirements and functions of the system.The system has completed industrial assembly,installation and commissioning,and has been industrially applied in the Jinping Group Changping Mine.The industrial trial operation results show that the host computer has rich monitoring screens,powerful data processing functions,high intelligent load management,andcentralized and remote control reliability.High;the logic control process of the lower computer conforms to the drainage process flow;the sensor monitoring is accurate,the actuator response speed is fast,and the action information feedback is accurate.The system improves the intelligent operation and maintenance level and comprehensive management efficiency of the mine drainage system. |
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