基于PLC的井下自动排水系统的研制

发布时间：2018-03-15 23:05

本文选题：井下排水　切入点：PLC　出处：《西安科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：煤矿井下排水系统在煤矿安全生产中占据重要地位。同时,该系统也是能耗大户,因此,建立安全、可靠、经济运行的排水系统,对煤矿生产具有现实意义。本文在调研和分析了我国现有井下排水系统存在问题的基础上,以山西省唐山沟煤矿为例,对其原有排水系统进行了自动化改造。总体方案中,考虑到该矿水文地质条件较复杂,有突发透水事故的隐患,加入了以潜水泵为核心的强排系统,通过监测涌水速率的异常变化,控制强排系统工作,提高了整个系统的安全性;对排水系统的重要辅件手动闸阀进行了电控改造,实现了闸阀的自动启闭。系统设计有远程自动、就地自动、远程手动和就地手动四种控制模式,可根据工况进行切换。主控系统选用西门子S7-1200系列PLC作为中央控制器,扩展了模拟量输入模块、数字量输入模块和通讯模块进行功能控制,并对系统前端工作设备、传感器、PLC各控制模块进行选择且进行了点数分配。系统在软件上采用结构化设计,根据节约能耗的原则,建立“避峰填谷”排水模型,合理调度水泵的工作时间;根据水泵的逻辑控制,建立水泵轮替工作制,以达到优化水泵运行及提高其使用寿命的目的。本论文研制的排水系统主要特点:系统各工作参数实时检测与显示;水泵自动启停;设计了较完善的保护和报警功能,如电机故障保护、水泵欠压报警等;支持触摸屏进行现场调试;系统可与地面监控中心联网,以便于集中管理。在本论文研究期间,通过与西安矿用自动化设备有限公司的项目合作,对山西大同唐山沟煤矿中央水泵房进行了实地调研,研制了井下自动排水系统,通过对该系统的调试,验证了设计的可行性。
[Abstract]:The underground drainage system plays an important role in the safe production of coal mine. At the same time, the system is also a large energy consumption, therefore, to establish a safe, reliable and economical drainage system, On the basis of investigating and analyzing the existing problems of underground drainage system in our country, taking Tangshangou Coal Mine in Shanxi Province as an example, this paper has carried on the automation transformation to its original drainage system. Considering the complex hydrogeological conditions of the mine and the hidden trouble of sudden water permeation accident, a strong drainage system with submersible pump as the core is added. By monitoring the abnormal variation of the water inflow rate, the work of the strong drainage system is controlled, and the safety of the whole system is improved. In this paper, the important auxiliary parts of drainage system manual gate valve have been reformed by electric control, and the automatic opening and closing of gate valve have been realized. The system design has four control modes: remote automatic, local automatic, remote manual and local manual. The main control system selects Siemens S7-1200 series PLC as the central controller, expands the analog input module, the digital input module and the communication module to carry on the function control, and to the system front-end working equipment, the main control system selects the Siemens S7-1200 series PLC as the central controller. The sensor PLC control module is selected and the number of points is allocated. The system adopts structured design in software. According to the principle of saving energy consumption, the drainage model of "avoiding peak and filling valley" is established, and the working time of water pump is reasonably dispatched. According to the logical control of the pump, the system of water pump rotation is established to optimize the operation of the pump and improve its service life. The main features of the drainage system developed in this paper are: the real-time detection and display of the system working parameters; Automatic starting and stopping of water pump; design of perfect protection and alarm function, such as motor fault protection, water pump under-pressure alarm, etc.; support touch screen for on-site debugging; the system can be connected with ground monitoring center, In order to facilitate centralized management, during the research period of this paper, through the cooperation with the project of Xi'an Mine Automation equipment Co., Ltd, a field investigation was carried out on the central water pump house of Datong Tangshanggou Coal Mine in Shanxi Province, and the underground automatic drainage system was developed. The feasibility of the design is verified by debugging the system.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD636;TP273

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