KZ-28型可控震源振动器平板结构优化设计与性能研究

发布时间：2018-04-17 17:41

本文选题：可控震源 + 振动器　；参考：《西南石油大学》2015年硕士论文

【摘要】：可控震源作为一种非爆炸震源,克服爆炸震源的诸多缺点,具有高效、安全、环保等特性,在大部分地区已逐步取代传统的爆炸震源,成为油气资源勘探的主要装备。振动器平板是连接可控震源与大地的重要部件,是传递地震信号的关键,其结构及性能对可控震源的在油气资源的勘探精度以及具有重要的作用。本文根据目前油气资源勘探对可控震源的要求,在调研国内外可控震源振动器平板研究的基础上,提出平板结构优化目标,并应用结构拓扑优化方法,对现有KZ-28型可控震源振动器平板结构进行优化设计,以期得到一种综合性能良好的平板结构,从而改善振动器激震效果,提高油气勘探的精度及效率。本文开展的具体研究工作如下： (1)提出可控震源振动器平板结构拓扑优化参数。根据KZ-28型可控震源振动器系统的组成以及工作原理,建立了振动器系统动力学模型和振动器能量传递率数学模型,通过分析可知：平板的质量和刚度是影响平板的主要参数,由此提出了以平板的质量和刚度为优化参数的设计思路。 (2)应用结构拓扑优化方法对工字钢平板开展结构优化研究。根据结构拓扑优化的原理,开展工字钢平板结构拓扑优化仿真研究,并根据仿真计算结果,设计了一种新的平板结构。 (3)开展了优化前后平板的性能分析。根据提出的平板性能评价指标,通过对比优化前后的平板开展性能分析研究,得出优化平板存在的不足之处,并确定了平板结构的改进方向。 (4)改进平板性能研究与井字形平板的提出。根据拓扑优化的结果以及平板结构设计的要求对平板结构进行了改进,并对结构改进后的平板性能进行了研究。通过对比分析各项性能参数,改进平板各项参数均得到了提高；以此研究思路为基础,提出了一种综合性能优异的井字形结构平板。通过本文研究的研究成果,应用结构拓扑优化设计方法开展平板结构优化,为提高可控震源振动器的性能提供了一条有效的途径。
[Abstract]:As a kind of non-explosive seismic source, vibroseis has the characteristics of high efficiency, safety and environmental protection, and overcomes many shortcomings of explosion source. It has gradually replaced the traditional explosion source in most areas and become the main equipment for exploration of oil and gas resources.Vibrator plate is an important component to connect vibroseis with earth and is the key to transmit seismic signal. Its structure and performance play an important role in the exploration accuracy and oil and gas resources of vibroseis.According to the requirements of oil and gas exploration for vibroseis at present, based on the investigation of the plate of vibroseis at home and abroad, this paper puts forward the target of plate structure optimization, and applies the method of structural topology optimization.This paper optimizes the design of the plate structure of KZ-28 vibroseis vibrator, in order to obtain a plate structure with good comprehensive performance, so as to improve the vibration effect of vibrator and improve the precision and efficiency of oil and gas exploration.The specific research work carried out in this paper is as follows:1) the topology optimization parameters of plate structure of vibroseis vibrator are proposed.According to the composition and working principle of KZ-28 vibroseis system, the dynamic model of vibrator system and the mathematical model of vibrator energy transfer rate are established. The results show that the mass and stiffness of plate are the main parameters affecting the plate.Therefore, the design idea of the optimum parameters of the mass and stiffness of the plate is put forward.2) structural optimization of I-beam plate is carried out by using structural topology optimization method.According to the principle of structural topology optimization, the topology optimization simulation of I-steel plate structure is carried out. According to the simulation results, a new flat plate structure is designed.The performance analysis of the plate before and after optimization is carried out.According to the proposed performance evaluation index of the flat plate, by comparing the performance analysis of the plate before and after the optimization, the shortcomings of the optimization plate are obtained, and the improvement direction of the plate structure is determined.4) improving the performance of the plate and proposing the well-shaped plate.According to the results of topology optimization and the requirements of plate structure design, the plate structure is improved, and the performance of the improved plate structure is studied.By comparing and analyzing the performance parameters, the parameters of the improved plate are improved, and based on the research ideas, a new type of plate with good comprehensive performance is proposed.Through the research results of this paper, the structural topology optimization method is used to optimize the plate structure, which provides an effective way to improve the performance of vibroseis vibrator.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.43

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