旋挖钻机主卷扬势能回收系统研究

发布时间：2018-01-04 02:10

本文关键词：旋挖钻机主卷扬势能回收系统研究　出处：《吉林大学》2014年硕士论文　论文类型：学位论文

【摘要】：旋挖钻机是桩基础施工工程中应用最广泛的机电液一体化的大型工程机械，可钻进土层、卵石层、岩石层等复杂多变的地层，对我国大部分地区的不同的地质工程都具有很好的适应性。在我国基础设施建设正火热进行的大背景下，旋挖钻机作为桩基础施工中的宠儿便成为大批工程业主的钦定施工设备，其节能控制技术也备受关注。主卷扬系统是旋挖钻机的主要工作装置之一，在工作过程中要进行反复的提升和下放，下放过程中大量的重力势能都以热能的形式消耗在平衡阀的节流阀阀口上，这样不仅造成了能量的浪费，同时对系统的作业性能也造成很大的影响。基于以上原因，本文将采用二次元件泵/马达配合液压储能元件液压蓄能器的回收方式对主卷扬下放工况钻杆与钻具下放的重力势能进行回收。本文研究的主要内容如下： 1、借鉴旋挖钻机主卷扬开式液压系统、控制阀控制的主卷扬回路以及利用二次元件泵/马达实现能量的回收和释放的方法，确定了旋挖钻机主卷扬势能回收的液压系统图，并阐述了其具体工作原理。根据势能回收系统的设计方案，，以某型旋挖钻机为原型，建立了势能回收系统关键元件的数学模型。 2、建立了发动机、二次元件泵/马达、负载、平衡阀等势能回收系统主要元件的AMESim模型。依赖于所建立的平衡阀AMESim模型，通过仿真分析了节流孔径、弹簧刚度、过流面积对平衡阀性能的影响。 3、对传统的旋挖钻机下放过程中释放的重力势能在Matlab中进行了计算，得出下放势能很可观的结论；搭建了传统旋挖钻机主卷扬传统系统的仿真模型。 4、对回收系统采用了基于逻辑门限的能量控制策略，确定了合理的逻辑门限参数，分析了系统的工作模式，制定了系统工作模式转换流程图，建立了逻辑门限值仿真控制模型。仿真结果表明，采用基于逻辑门限的能量控制策略的回收系统的燃油经济性与传统结构相比提高了12.8%。
[Abstract]:Rotary drilling rig is the most widely used mechatronic and hydraulic engineering machinery in pile foundation construction engineering. It can be drilled into the soil layer, pebble layer, rock stratum and other complex and changeable strata. It has good adaptability to different geological projects in most areas of our country. As the favorite of pile foundation construction, rotary drilling rig has become a large number of engineering owners' construction equipment, and its energy-saving control technology is also concerned. The main hoisting system is one of the main working devices of rotary drilling rig. In the process of work to be repeatedly promoted and lowered a large number of gravity potential energy in the form of heat energy consumption in the balance valve throttle valve this not only caused a waste of energy. At the same time, the system also has a great impact on the performance of the system. Based on the above reasons. In this paper, the secondary component pump / motor combined with the hydraulic accumulator is used to recover the gravity potential energy of the drill pipe and the drill tool under the main hoisting condition. The main contents of this paper are as follows: 1. Draw lessons from the main hoisting hydraulic system of rotary drilling rig, the main hoisting loop controlled by control valve and the method of energy recovery and release by using secondary component pump / motor. The hydraulic system diagram of the main hoisting potential energy recovery of rotary drilling rig is determined, and its working principle is expounded. According to the design scheme of the potential energy recovery system, a rotary drilling rig is used as the prototype. The mathematical model of key components of potential energy recovery system is established. 2. The AMESim model of the main components of the engine, secondary component pump / motor, load, balance valve and so on is established, which depends on the AMESim model of the balance valve. The effects of throttle diameter, spring stiffness and flow area on the performance of the balancing valve are analyzed by simulation. 3. The gravity potential energy released by traditional rotary drilling rig is calculated in Matlab, and the conclusion is obtained that the lower potential energy is considerable. The simulation model of the main hoisting system of the traditional rotary drilling rig is built. 4. The energy control strategy based on logic threshold is adopted for the recovery system, the reasonable logic threshold parameters are determined, the working mode of the system is analyzed, and the flow chart of system working mode conversion is made. The simulation model of logic threshold value is established. The simulation results show that the fuel economy of the recovery system based on the logic threshold energy control strategy is increased by 12. 8% compared with the traditional structure.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU67

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