长距离带式输送机节能优化策略的研究
发布时间：2018-12-10 12:21
【摘要】：节能是当今经济发展过程中最为热点的话题之一,在原材料不断上涨的今天,竞争日益激烈,降低经济成本是企业发展的非常关键的一部分。在煤炭行业,带式输送机已经成为主要的生产运输设备。为了满足企业的生产需要和扩大规模等问题,带式输送机在驱动电机的选择上都会留有较大的冗余度。由于煤矿开采的不均衡性,输送机的运量不能保持稳定,导致带式输送机运量不足,经常处于“大马拉小车”的状态。传统控制系统中,带式输送机的速度一般都是固定的,从而使得带式输送机很多时候是低载运行甚至空载运行,降低了驱动电机做功效率,降低了电能的利用率,耗费大量电能,增加企业的生产成本。降低带式输送机的生产电耗已经成为企业迫切需要解决的问题,引起了许多工程技术人员的关注。首先,从输送带应力应变的特性入手,将带式输送系统离散成有限个“质量-弹簧-阻尼”子系统,建立胶带子系统的动力学模型。结合驱动装置、拉紧装置、滚筒等单元的动力学模型,建立整个输送系统的动力学模型。其次,探讨了带式输送机电气节能方法,分析了各节能技术的原理,适用范围及优缺点,选择了合适的优化节能方法。一方面,针对于启动过程中带式输送机存在的问题,提出了基于耦合补偿的功率平衡节能控制方法。另一方面,通过对带式输送机的阻力分析,研究了带速与运量的合理匹配对带式输送机的节能效果,在此基础上,提出了基于变频调速的带式输送机节能控制策略。最后,设计了控制器在环的带式输送机半实物仿真实验系统总体方案并完成了系统调试。在MATLAB/SIMULINK里建立带式输送机输送带的动力学力学模型和驱动电机的动力学模型；控制器采用西门子PLC300,编写了PLC节能调速控制程序,带式输送机仿真模型与PLC之间采用OPC通讯协议。
[Abstract]:Energy saving is one of the most hot topics in the process of economic development. With the rising of raw materials, competition is becoming increasingly fierce, and reducing economic costs is a very key part of the development of enterprises. In the coal industry, belt conveyor has become the main production and transportation equipment. In order to meet the needs of production and expand the scale of enterprises, belt conveyors will have greater redundancy in the selection of driving motors. Because of the unbalance of coal mining, the transport capacity of conveyer can not be kept stable, which leads to the shortage of belt conveyer, which is often in the condition of "pulling small cart with big horse". In the traditional control system, the speed of the belt conveyor is generally fixed, which makes the belt conveyor run at low load or even without load, which reduces the work efficiency of the driving motor and reduces the utilization rate of the electric energy. Consume a lot of electric energy, increase the production cost of the enterprise. Reducing the production power consumption of belt conveyor has become an urgent problem to be solved by enterprises, which has attracted the attention of many engineers and technicians. Firstly, starting from the characteristics of stress and strain of conveyor belt, the belt conveying system is discretized into a limited "mass-spring-damping" subsystem, and the dynamic model of belt subsystem is established. The dynamic model of the whole conveying system is established by combining the dynamic model of the driving device, the tensioning device and the roller unit. Secondly, the paper discusses the electric energy saving method of belt conveyor, analyzes the principle, applicable range, advantages and disadvantages of each energy saving technology, and selects the appropriate optimization energy saving method. On the one hand, a power balance and energy saving control method based on coupling compensation is proposed to solve the problems of belt conveyor during startup. On the other hand, by analyzing the resistance of belt conveyor, the energy saving effect of belt conveyor with reasonable matching of belt speed and transportation capacity is studied. On the basis of this, the energy saving control strategy of belt conveyor based on frequency conversion speed regulation is put forward. Finally, the overall scheme of the hardware-in-the-loop simulation experiment system of the belt conveyor with the controller is designed and the system debugging is completed. The dynamic model of belt conveyor belt and the dynamic model of driving motor are established in MATLAB/SIMULINK. The controller uses Siemens PLC300, to write the PLC energy saving and speed regulation control program, and the OPC communication protocol is used between the simulation model of belt conveyor and PLC.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD528.1
[Abstract]:Energy saving is one of the most hot topics in the process of economic development. With the rising of raw materials, competition is becoming increasingly fierce, and reducing economic costs is a very key part of the development of enterprises. In the coal industry, belt conveyor has become the main production and transportation equipment. In order to meet the needs of production and expand the scale of enterprises, belt conveyors will have greater redundancy in the selection of driving motors. Because of the unbalance of coal mining, the transport capacity of conveyer can not be kept stable, which leads to the shortage of belt conveyer, which is often in the condition of "pulling small cart with big horse". In the traditional control system, the speed of the belt conveyor is generally fixed, which makes the belt conveyor run at low load or even without load, which reduces the work efficiency of the driving motor and reduces the utilization rate of the electric energy. Consume a lot of electric energy, increase the production cost of the enterprise. Reducing the production power consumption of belt conveyor has become an urgent problem to be solved by enterprises, which has attracted the attention of many engineers and technicians. Firstly, starting from the characteristics of stress and strain of conveyor belt, the belt conveying system is discretized into a limited "mass-spring-damping" subsystem, and the dynamic model of belt subsystem is established. The dynamic model of the whole conveying system is established by combining the dynamic model of the driving device, the tensioning device and the roller unit. Secondly, the paper discusses the electric energy saving method of belt conveyor, analyzes the principle, applicable range, advantages and disadvantages of each energy saving technology, and selects the appropriate optimization energy saving method. On the one hand, a power balance and energy saving control method based on coupling compensation is proposed to solve the problems of belt conveyor during startup. On the other hand, by analyzing the resistance of belt conveyor, the energy saving effect of belt conveyor with reasonable matching of belt speed and transportation capacity is studied. On the basis of this, the energy saving control strategy of belt conveyor based on frequency conversion speed regulation is put forward. Finally, the overall scheme of the hardware-in-the-loop simulation experiment system of the belt conveyor with the controller is designed and the system debugging is completed. The dynamic model of belt conveyor belt and the dynamic model of driving motor are established in MATLAB/SIMULINK. The controller uses Siemens PLC300, to write the PLC energy saving and speed regulation control program, and the OPC communication protocol is used between the simulation model of belt conveyor and PLC.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD528.1
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