多井联动排采设备钢丝绳力学性能分析

发布时间：2018-02-23 18:30

本文关键词： 多井联动排采设备钢丝绳选型受力分析有限元寿命预估　出处：《西安石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：多井联动排采设备摆脱了单机单井的开采模式,利用钢丝绳与滑轮相结合的方式实现了一个驱动装置带动多口井同时采油,解决了丛式井系统效率低、能耗高的问题,最大限度满足了丛式井采油工艺的需要。钢丝绳是多井联动排采设备中将动力传递到各井的关键构件,由于不能准确及时判断钢丝绳的服役状况及使用寿命,限制了多井联动排采设备的进一步推广,据此,本文开展了多井联动排采设备钢丝绳力学性能的研究。主要内容如下:(1)依据多井联动排采设备设计方案,优选出对心式曲柄滑块机构作为多井联动排采设备的研究对象。研究了对心式曲柄滑块机构的运动学规律,得到悬点位移、速度、加速度随时间变化的规律。确定了机构的动力学模型,对构件的运动副反力、悬点载荷等要素进行了分析,为钢丝绳力学性能分析提供了外部激励。(2)基于多目标决策法建立了钢丝绳选型的指标体系,评价出适用于对心式曲柄滑块多井联动排采设备的钢丝绳型号。运用悬点载荷,确定出钢丝绳直径。结合绳径大小设计了钢丝绳配套装置,为钢丝绳寿命预估提供了计算依据。(3)以多井联动排采设备钢丝绳受力类型为基础,建立了绳股中钢丝拉伸和弯曲的力学模型,基于力学模型特征研究了钢丝绳内部钢丝应力应变的变化情况。(4)以选型钢丝绳的结构参数为样本,应用Auto CAD软件对选型钢丝绳进行实体建模,基于ANSYS Workbench软件对模型进行了有限元分析,研究了钢丝绳和钢丝在拉力作用下的应力应变规律,验证了钢丝绳数值模拟的准确性。(5)探讨了钢丝绳弯曲疲劳寿命因素,分析了轮绳直径比、钢丝绳公称强度、拉力比等因素对钢丝绳疲劳寿命的影响规律,基于Miner准则根据钢丝绳外部激励、配套装置、钢丝绳基本参数预估了钢丝绳的疲劳寿命,通过试验测评了疲劳损伤累计假设在多井联动排采设备钢丝绳寿命估算应用的正确性,为多井联动排采设备钢丝绳更换提供了指导。
[Abstract]:The multi-well linkage drainage equipment gets rid of the production mode of single machine and single well, realizes a drive device to drive multiple wells to produce oil at the same time, and solves the problems of low efficiency and high energy consumption of the cluster well system, using the combination of wire rope and pulley. The steel wire rope is the key component of the multi-well linkage drainage equipment to transfer the power to each well, because the service condition and service life of the wire rope can not be accurately and timely judged. This paper studies the mechanical properties of wire rope of multi-well linkage drainage equipment. The main contents are as follows: (1) according to the design scheme of multi-well linkage drainage equipment, The countercore crank slider mechanism is selected as the research object of the multi-well linkage displacement and production equipment. The kinematics law of the countercore crank slider mechanism is studied, and the displacement and velocity of the suspension point are obtained. The dynamic model of the mechanism is determined, and the reaction force of the moving pair and the load at the suspension point are analyzed. Based on the multi-objective decision method, the index system of wire rope selection is established, and the type of wire rope suitable for multi-well displacement equipment with countercore crank slider block is evaluated. Determining the diameter of steel wire rope, combining with the diameter of rope, designing the matching device of steel wire rope, which provides the calculation basis for predicting the life of steel wire rope, and based on the force type of wire rope of multi-well linkage displacement equipment. The mechanical model of tension and bending of steel wire in rope strands is established. Based on the characteristics of mechanical model, the variation of stress and strain of steel wire in wire rope is studied. The Auto CAD software is used to model the type selection wire rope, and the finite element analysis based on ANSYS Workbench software is carried out. The stress-strain law of wire rope and wire under tension is studied. The accuracy of numerical simulation of wire rope is verified. (5) the factors of bending fatigue life of wire rope are discussed, and the influence law of wheel rope diameter ratio, nominal strength of wire rope and tension ratio on fatigue life of wire rope is analyzed. Based on the Miner criterion, the fatigue life of the wire rope is estimated according to the external excitation, matching device and basic parameters of the wire rope, and the correctness of the fatigue damage accumulative hypothesis applied to the estimation of the life of the wire rope of the multi-well linkage drain mining equipment is evaluated through the test. It provides guidance for wire rope replacement of multi-well linkage drainage equipment.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE933.1

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