| ZMK5550TZJF50/120型救援车载钻机钻压自适应电液系统研究 |
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| 引用本文： | 常江华,赵良,鲁飞飞,王龙鹏,杨江波. ZMK5550TZJF50/120型救援车载钻机钻压自适应电液系统研究[J]. 煤田地质与勘探, 2022, 50(11): 67-75. DOI: 10.12363/issn.1001-1986.22.05.0417 |
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| 作者姓名： | 常江华 赵良 鲁飞飞 王龙鹏 杨江波 |
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| 作者单位： | 1.中煤科工西安研究院(集团)有限公司，陕西 西安 710077 |
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| 基金项目： | 国家重点研发计划课题(2018YFC08082003) |
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| 摘 要： | 车载钻机机动性强、工艺适应范围广，是救援钻孔施工的理想机型，传统的车载钻机均采用液控、液驱的方式，存在控制参数显示不直观、管线较多、难以实现闭环控制等难题，钻遇复杂地层时，司钻人员的反应速度往往难以适应工况的变化，不利于钻孔安全。为满足救援钻孔施工安全、自动化程度高的需求，ZMK5550TZJF50/120型救援车载钻机采用电控、液驱的方式。根据回转和给进两大主要执行机构的负载特性，设计具有无级调速和防吸空特性的回转驱动系统、具有防坠落功能的给进驱动回路；根据系统的控制、监控和驱动要求，设计集中操控和显示的救援钻机电控系统，实现分布式总线协议部署以及具有优先级的闭环散热调节；选取对钻压控制有影响的7个参数，采用BP神经网络技术对历史数据进行了训练、验证和测试，获取钻进参数与钻压控制的连接权值矩阵，实现对钻压的自适应控制(Weight on Bit，WOB)。该钻机在宁夏梅花井现场工业性试验中完成了预定的钻孔工作，电液系统运行稳定，温度控制系统可保证液压系统油温保持在40~60℃区间，柴油机冷却液温度保持在70~90℃区间，验证了温度闭环自适应控制系统的工作效果。ZMK5550TZJF50/120型救援车载钻机初步建立了钻压自适应控制模式，但由于地层的多样性和复杂性，还需要不断丰富样本数量、提高系统计算速度，使钻压自适应控制系统对地层的适应性更强。
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| 关 键 词： | 车载钻机 电液控制 散热系统 钻压自适应 无级调速 |
| 收稿时间： | 2022-04-20 |
Adaptive electro-hydraulic system of ZMK5550TZJF50/120 truck-mounted drilling rig with WOB adaptive control function |
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| Affiliation: | 1.Xi’an Research Institute (Group) Co.Ltd., China Coal Technology and Engineering Group Corp., Xi’an 710077, China2.School of Construction Machinery, Chang’an University, Xi’an 710064, China |
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| Abstract: | The truck-mounted drilling rig is an ideal model for rescue drilling construction due to its strong mobility and wide process adaptability. The traditional truck-mounted drilling rig adopting the mode of hydraulic control and hydraulic drive has the problems of non-intuitive displaying of control parameters and many pipelines, which is hard to achieve the closed-loop control. In case of drilling into the complex formations, the response speed of the driller is often difficult to adapt to changes in working conditions, which is not conducive to the drilling safety. In order to meet the requirements of safety and high automation of rescue drilling construction, the mode of electric control and hydraulic drive is adopted for ZMK5550TZJF50/120 rescue truck-mounted drilling rig. According to the load characteristics of the two main actuators of rotary and feeding systems, a rotary drive system with the characteristics of stepless speed regulation and empty suction control, as well as a feeding drive loop with anti-falling function, were designed. According to the control, monitoring and driving requirements of the system, an electric control system with centralized control and display was developed, with the distributed deployment of bus protocol and the prior cooling of closed loop realized. Besides, seven influential parameters of WOB control were selected, of which the historical data were trained, verified and tested using the BP neural network technology. In this way, the connection weight matrix of drilling parameters and WOB control was obtained, and the adaptive control of WOB was realized. The drilling rig completed the scheduled drilling work in the field industrial test of Meihua Well, with the electro-hydraulic system operating stably and the temperature control system maintaining the oil temperature of the hydraulic system at 40?60℃ and that of the cooling water of the diesel engine at 70?90℃. This verifies the good working effect of the closed-loop adaptive control system of temperature. ZMK5550TZJF50/120 truck-mounted drilling rig has preliminarily established the adaptive control mode of WOB. However, due to the diversity and complexity of the formation, it is necessary to continuously enrich the number of samples and improve the system calculation speed, so that the adaptive control system of WOB could be more adaptive to the formation. |
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