Application of PLC in Variable Frequency Constant Pressure Control System for Mine Emulsion Pump Station

Tian, Cong; Su, Chang; Zhao, Weigang

doi:10.1088/1742-6596/1982/1/012187

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…Fu et al 12 proposed a stabile-pressure fluid supply principle with reasonable flow in advance based on the operating characteristics of the support. Tian et al 13 studied the application of PLC in the frequency conversion and constant pressure control system of mine emulsion pump station, and founded that the system based on PLC can effectively reduce energy consumption. Li et al 14 studied the intelligent fluid supply technology in the coal mining face, and elaborated the key technologies such as intelligent on-demand fluid supply control technology and remote fluid supply technology.…”

Section: Optimal Tracking Control Of the Coal Mining Face Fluid Suppl...mentioning

confidence: 99%

Optimal tracking control of the coal mining face fluid supply system via adaptive dynamic programming

Zeng,

Wang

2023

Sci Rep

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Emulsion pump station is widely used to provide power for full-mechanized coal mining face equipment. With the development of the mining technique of longwall face and the extensive use of large mining height and high working resistance of the hydraulic support, the fluid supply pressure is more unstable and the pressure impact is increasingly intensified. The intelligent control of the emulsion pump station is the key to the development of the stable fluid supply technology at the working face. This paper develops a new on-line adaptive learning technique to improve the response speed of pumping station based on the optimal control algorithm of adaptive dynamic programming (ADP). The state space model of the working face fluid supply system in the process of no-load column lifting of hydraulic support is first established using the flow relationship, and the effectiveness of the proposed control algorithm is then verified by simulation validation. Moreover, combined with a certain fluid supply system of a fully mechanized caving face in Shandong Energy Xinwen Group XinJulong Co., Ltd, a technical scheme of adaptive stable fluid supply is verified in engineering practice. The results indicate that the fluid supply system using the proposed control algorithm has a favorable tracking effect on the ideal trajectory, and the tracking error can converge to near zero. The output pressure of the fluid supply system using the stable fluid supply technology is more stable, and the practical effect is good, which meets the demand of stable fluid supply in the mining face.

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Section: Optimal Tracking Control Of the Coal Mining Face Fluid Suppl...mentioning

confidence: 99%

Optimal tracking control of the coal mining face fluid supply system via adaptive dynamic programming

Zeng,

Wang

2023

Sci Rep

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“…The data channels include an upward channel and a downward channel. The emulsion dispensing equipment terminal collects sensor data and transmits it to the monitoring platform through the upward data channel [22]; the monitoring platform pushes commands to the equipment terminal through the downward channel to control the work of emulsion dispensing equipment. The actuator adopts an APRUS-X adapter, DC brushless booster pump with solenoid valve, weight sensor, PLC, and mixer to realize automatic liquid dispensing and remote monitoring function; less electrical equipment means lower cost and failure rate.…”

Section: Overall System Design and Critical Technology Analysis A Ove...mentioning

confidence: 99%

Design and Implementation of an Automatic Emulsion Dispensing and Remote Monitoring System Based on IoT Platform

Wang,

Kang,

Liu

et al. 2023

IEEE Access

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In order to realize the automatic dispensing and remote monitoring of emulsions in the coal mine production process and improve the efficiency and safety of coal mine production, an automatic dispensing and remote monitoring system of emulsions based on the IoT platform was built. The APRUS X industrial network management adapter in this system is the upper computer of Siemens S7-200SMART PLC and the data transmission hub between the dispensing system and the MixIOT cloud platform, while the MixIOT cloud platform realizes the functions of data visualization and remote control terminal; the PLC acts as the control core and monitors the weight sensors, solenoid valves, DC brushless booster pumps, agitators and other equipment at the same time. The data collected by the sensors are uploaded to the cloud through IOT technology and combined with real-time data to realize automatic dispensing and remote control of emulsion. Meanwhile, remote monitoring is realized through Web page and apps, which is convenient for managers to monitor the production site in real time and realize intelligent production. There are 27 groups of liquid dispensing experiments, and the average relative error of emulsion concentration ratio obtained after 27 groups of tests is 4.8%, and the accuracy requirement meets the actual engineering needs. The research results are of great significance to promote the intelligent production of coal mines and the application of industrial IOT technology, and provide specific reference and references for the research and application in related fields.INDEX TERMS IoT platform, intelligent mine, automatic emulsion dispensing, Siemens S7-200SMART PLC, remote monitoring, sensors.

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A Steady-Pressure Control Method for Emulsion Pump Station Based on Online Updating of Optimal Flow Rate

Xu,

Kou,

et al. 2024

Actuators

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In order to solve the problem of unstable fluid supply pressure and serious impact caused by the complicated and changeable working condition of a fully mechanized mining face in coal mines and the sluggish response of the fluid supply system to the fluid demand for the hydraulic support, a control method based on online updating generalized regression neural network (GRNN) was proposed. Firstly, the simulated hydraulic support test platform and co-simulation model were built. Secondly, The optimal flow dataset of steady-pressure fluid supply under different working conditions is calculated by simulation. Furthermore, the GRNN prediction model was established by using dataset and online updating learning technology to predict the optimal fluid supply flow according to environmental parameters. Finally, the optimal flow control method of online updating GRNN was established, and numerical research and experimental verification were also carried out in different working conditions. The results indicated that the proposed control method could track the working conditions of the working face in real time and adjusted the fluid supply flow of the emulsion pump station adaptively, which effectively alleviated the pressure fluctuation and pressure shock, and the system pressure was more stable, meeting the demand of steady-pressure fluid supply on the working face.

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Application of PLC in Variable Frequency Constant Pressure Control System for Mine Emulsion Pump Station

Cited by 4 publications

References 7 publications

Optimal tracking control of the coal mining face fluid supply system via adaptive dynamic programming

Optimal tracking control of the coal mining face fluid supply system via adaptive dynamic programming

Design and Implementation of an Automatic Emulsion Dispensing and Remote Monitoring System Based on IoT Platform

A Steady-Pressure Control Method for Emulsion Pump Station Based on Online Updating of Optimal Flow Rate

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