Design of hydraulic pressure driven rodless drainage control system
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摘要: 针对现有煤层气无杆排采设备控制精度和工作效率低，以及排采现场人员劳动强度大等问题，设计了一种液压驱动无杆泵，并基于PLC设计了液压驱动无杆排采控制系统。该系统采用井下压力计监测井底流压，通过PLC对流压实测值和给定值进行比较，并根据所得偏差控制变频器来调节电动机转速，从而调节井底流压；井下液压驱动无杆泵由三通道油管内置动力液管加压后提供的动力液驱动，做往复机械运动，可实现阀体之间上下自动切换，无需人工操作。试验结果表明，该系统可快速、准确地调节井底流压跟随给定值，且超调量小。Abstract: For low control precision and work efficiency of existing rodless drainage equipments of coalbed methane and large labor intensity in drainage field, a hydraulic pressure driven rodless pump was designed as well as a hydraulic pressure driven rodless drainage control system based on PLC. The system uses underground pressure transmitter to measure bottom-hole flow pressure and PLC to control inverter to adjust motor speed through comparing measured flow pressure with the set one, so as to adjust bottom-hole flow pressure. The hydraulic pressure driven rodless pump does reciprocating motion, which is driven by power fluid in power fluid pipe of three-channel oil pipe, so as to realize automatic up-down switching between valves without labor operation. The experimental result shows that the system can adjust bottom-hole flow pressure to approach the set one quickly and correctly with small overshoot.
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期刊类型引用(1)
1. 刘龙龙. 基于高压防爆变频原理的带式输送机改造研究. 矿业装备. 2022(03): 272-274 . 
百度学术
其他类型引用(2)
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