矿用机电联动液控闸阀的设计研究

发布时间：2018-06-16 03:19

本文选题：机电联动液控闸阀 + 方案设计　；参考：《太原理工大学》2017年硕士论文

【摘要】：阀门是管路流体运送系统中的关键设备,广泛应用于石油、化工、建筑等多个领域,它在自动化控制技术日益成熟的矿井排水系统中同样占有举足轻重的地位,其性能好坏直接影响整个排水系统的安全性和高效性。本文先对煤矿排水系统的基本组成结构进行了简要介绍,然后引出本文研究的重点排水组成设备——调节闸阀。介绍了当前闸阀的基本类型和各自的结构原理,对手动闸阀、电动闸阀、液控闸阀等不同闸阀的发展阶段进行了分析,指出了各闸阀所存在的不足和缺陷。针对目前闸阀存在的问题提出了本课题的研究目的,即开发设计一种适用于矿井排水系统中,能够同时具有闸阀启闭速度分别无级调节、断电应急工况下通过手摇离合装置驱动闸阀、液压过载保护等多种功能的新型机电联动液控闸阀。本文针对矿井排水系统的具体工况,制定了调节闸阀的设计原则,对现有液控闸阀的执行机构方案进行比较分析并最终确定了机电联动液控闸阀的总体设计方案。在模块化设计方法的基础上,确定了闸阀的油缸执行机构模块、液压控制集成模块、机电联动模块等,结合solidworks自底向上的建模思想完成了闸阀的参数化设计和装配模型的建立,对其工作原理及特点进行了详细阐述。对机电联动液控闸阀的液压系统进行了设计及原理分析,对各液压部件进行了参数设计及选择。为了获得液压缸外负载的变化情况,利用Fluent软件对闸板在管道中受水流体介质力的情况进行了仿真分析,将得到的油缸外负载结果导入到液压仿真软件Automation Stdio中,对闸阀进行了机电液联合仿真,对其开阀特性和双向节流调速阀的性能进行了仿真研究,验证了液压系统设计的可靠性。开发了一种适用于液控闸阀的手摇离合装置,对其结构进行了设计。针对设计的虚拟样机模型,首先利用ADAMS软件进行了动力学仿真,对手摇变速箱的转速及啮合力进行了理论计算和仿真验证,通过振动仿真对虚拟模型的振动原因进行了研究,从动力学角度验证了模型传动性能良好。其次,利用Ansys Workbench有限元分析软件对手摇变速箱的重要部件行星架进行了静力学分析和模态仿真,证明了行星架结构设计的合理性。对制造出的实体样机进行了基本功能试验,包括液压系统的保压测试和手摇离合装置的功能测试。在此基础上,对手摇离合装置进行了振动特性实验分析,包括实验模态测试和工作状态下振动频率的测试,通过对实验数据分析,找到了可能引起该装置振动的原因,为装置今后的结构优化提供了参考依据。
[Abstract]:Valve is the key equipment in the pipeline fluid transportation system. It is widely used in many fields, such as petroleum, chemical industry, construction and so on. It also plays an important role in the mine drainage system, which is becoming more and more mature in automatic control technology. Its performance directly affects the safety and efficiency of the whole drainage system. In this paper, the basic structure of coal mine drainage system is introduced briefly, and then the key drainage equipment of this paper, the regulating gate valve, is introduced. The basic types of gate valves and their structural principles are introduced. The development stages of different gate valves, such as manual gate valves, electric gate valves and hydraulic gate valves, are analyzed, and the shortcomings and defects of each gate valve are pointed out. In view of the problems existing in gate valves at present, the purpose of this paper is to develop and design a kind of stepless adjustment of gate valve opening and closing speed, which can be used in mine drainage system at the same time. A new type of electromechanical hydraulic gate valve with various functions, such as hydraulic overload protection and so on, is actuated by hand clutch device under emergency condition. According to the concrete working condition of mine drainage system, the design principle of regulating gate valve is established in this paper. The scheme of actuating mechanism of hydraulic gate valve is compared and analyzed, and the overall design scheme of electromechanical hydraulic gate valve is finally determined. On the basis of the modular design method, the hydraulic control integration module, the electromechanical linkage module and so on are determined. The parametric design and assembly model of the gate valve are completed with the bottom-up modeling idea of solidworks. The working principle and characteristics are described in detail. The hydraulic system of electromechanical linkage hydraulic gate valve is designed and its principle is analyzed. The parameters of hydraulic components are designed and selected. In order to obtain the change of the load outside the hydraulic cylinder, a simulation analysis was carried out by using fluent software to simulate the load of the sluice plate in the pipeline, and the result of the load outside the cylinder was imported into the hydraulic simulation software Automation Stdio. The electro-hydraulic simulation of gate valve is carried out, and the characteristics of opening valve and the performance of bidirectional throttling speed regulating valve are simulated. The reliability of hydraulic system design is verified. A hand clutch device suitable for hydraulic gate valve was developed and its structure was designed. Aiming at the designed virtual prototype model, the dynamic simulation is carried out by Adams software, and the rotational speed and meshing force of the hand gearbox are calculated and verified theoretically, and the vibration reasons of the virtual model are studied by vibration simulation. The model transmission performance is proved to be good from the dynamic point of view. Secondly, the statics analysis and modal simulation of the planetary frame, an important component of the manual gearbox, are carried out by using the Ansys Workbench finite element analysis software, which proves the rationality of the design of the planetary frame structure. The basic functional tests of the prototype are carried out, including the hydraulic system pressure control test and the manual clutch device function test. On this basis, the vibration characteristics of the handshake clutch device are analyzed experimentally, including the experimental modal test and the vibration frequency test in the working state. Through the analysis of the experimental data, the possible causes of the vibration of the device are found. It provides a reference for the structure optimization of the device in the future.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD442

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