井下复杂供水管网压力自动调节与异常预警系统

发布时间：2018-02-25 19:09

本文关键词： 状态检测模糊控制变频技术人机界面 MCGS　出处：《青岛科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：井下供水系统是煤矿井下安全生产活动所必须具备的生命系统。不论采掘生产活动,还是矿井“一通三防”,都需要具备足够压力的水源来支持,达不到水力要求,不仅直接影响井下各用户作业生产,同时还将带来非常重大的安全隐患问题。有些地方水压过大也要进行控制,若水压过大会造成爆管的事故。煤矿井下用水主要是消防用水,喷雾降尘用水,机电设备的冷却用水。如果水压过大,则水量消耗大,同时可能对机电设备造成爆裂事故。而水压过小,则水量小致使雾化效果不好,除尘效果差,同时机电设备的冷却水量不足而超温停机。通过现有的井下通讯通道实现地面遥控指挥。通过水位传感器、压力控制器、在线检测流量计、PLC控制开关并借用井下通讯检测线缆通道,实现水厂等地点由就地控制改为远程控制,达到操作自动化功能。不仅减少岗位操作人员,而且节省了电能,真正实现了岗位本质化。本文结合煤矿生产的实际情况,提出并完成了井下复杂供水管网压力自动调节与异常预警系统。首先分析了目前国内外井下恒压供水的研究现状,给出了课题研究的目的和意义。在第二章中研究了典型的井下恒压供水系统组成,比较各系统的优缺点。选择合适的的硬件设备,既满足控制的要求又能尽可能的发挥其特点。根据井下的实际运行需要,煤矿井下供水管网不同的位置需要的处理方式也不一样,在井下不同水平,地势的不同,用水量根据生产方式的要求也有很大的差别,有的地方需要电动闸阀减压,有的需要增压泵加压。通过对模糊系统的理论分析,将水压控制在一定的范围之内并不要求精确,因此提出模糊控制策略。选择合适的模糊控制模型,并通过MATLAB的仿真查看其结果是否满足模糊控制理论的应用能够使供水量满足井下生产的要求,结合井下的设备必须具有防爆特点,将变频器改造以符合井下的安全要求,结合机电设备群的实际情况,给出了变频控制的具体实现过程。最后详细介绍了系统软件部分的实现过程。通过MCGS组态软件完成对监控系统上位机画面的组建,利用现场的已有的通讯站,通过光线的传输方式将井下数据传至地面监控中心,构建起完整的设备状态监控系统。工作人员可以通过上位机组态画面实时了解机电设备运行状态,时时的观看井下各种数据,通过对管道压力的监控,实现及时的预警。
[Abstract]:The downhole water supply system is the life system necessary for the safe production activities in coal mines. Both the mining and production activities and the "one pass and three prevention" in coal mines require sufficient water sources to support them and fail to meet the hydraulic requirements. It will not only directly affect the production of underground users, but also bring great hidden safety problems. In some places, too much water pressure should be controlled, and if the water pressure exceeds the water pressure, the accident of pipe burst will be caused. Underground coal mine water is mainly used for fire protection, spray and dust control, and cooling of electromechanical equipment. If the water pressure is too high, the water consumption will be high, and at the same time it may cause a burst accident on the mechanical and electrical equipment. But the water pressure is too small. If the amount of water is small, the atomization effect is not good, the dust removal effect is poor, and the cooling water quantity of the electromechanical equipment is insufficient and the cooling water is overheated and shut down. Through the existing underground communication channel, the ground remote control command is realized, and the water level sensor, the pressure controller, On-line detection Flowmeter and PLC control switch and underground communication detection cable channel are used to realize the change from local control to remote control in water plant and achieve the function of operation automation, which not only reduces the number of post operators, but also saves electric energy. Combined with the actual situation of coal mine production, this paper puts forward and completes the automatic pressure regulation and abnormal early warning system of complex underground water supply network. Firstly, the research status of underground constant pressure water supply at home and abroad is analyzed, and the purpose and significance of the research are given. In the second chapter, the composition of the typical underground constant pressure water supply system is studied, and the advantages and disadvantages of each system are compared. The selection of appropriate hardware equipment can not only meet the control requirements but also give full play to its characteristics as far as possible. Different positions of underground water supply networks in coal mines require different treatment methods. At different levels and different terrain, water consumption also varies greatly according to the requirements of the mode of production. In some places, electric gate valves are required to decompress the pressure. Some need booster pump pressure. Through the theoretical analysis of fuzzy system, it is not required to be accurate to control water pressure within a certain range, so a fuzzy control strategy is put forward, and a suitable fuzzy control model is selected. And through the simulation of MATLAB to see if the application of fuzzy control theory can make the water supply meet the requirements of underground production, combined with the underground equipment must have explosion-proof characteristics, the converter is changed to meet the safety requirements. According to the actual situation of electromechanical equipment group, the realization process of frequency conversion control is given. At last, the realization process of the system software is introduced in detail. The upper computer picture of the monitoring system is constructed by MCGS configuration software, and the existing communication station is used in the field. The downhole data is transmitted to the ground monitoring center by the transmission of light, and a complete equipment state monitoring system is constructed. The workers can understand the running state of the electromechanical equipment in real time through the configuration screen of the upper computer. Watch all kinds of underground data from time to time and realize timely early warning by monitoring pipeline pressure.
【学位授予单位】：青岛科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD744

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