油气管式段塞流捕集器设计方法研究

发布时间：2017-12-26 17:39

本文关键词：油气管式段塞流捕集器设计方法研究　出处：《西南石油大学》2016年硕士论文　论文类型：学位论文

【摘要】：随着气液两相混输技术的不断发展,混输管路在海洋、极地、沙漠、近海气田得到了大量运用,段塞流流型愈加常见。段塞流会影响正常管路输送、损坏下游设备,因此在段塞运行下的混输管路终端设置段塞流捕集器,以消除段塞流对下游设备的冲击,同时保证下游不间断供气。段塞流捕集器常用类型为管式和容器式,虽然目前我国已有管式段塞流捕集器自主知识产权的设计方法,但仍然存在偏流、设计方法保守等问题,造成设备的不完全利用以及经费的不必要投入,因此本文对管式段塞流捕集器设计方法进行研究,以期不断提高其工作效率同时合理降低经费投资。本文主要针对管式段塞流捕集器设计方法的研究,完成了以下工作：(1)本文从设备结构入手,分析了各结构工作任务以及设备的工作原理,探讨了设备的气液分离机理,从而明确了设计关键参数。(2)对典型设计方法进行了对比分析,并采用这些设计方法对番禹30-1至珠海终端海底管线末端处理厂的管式段塞流捕集器进行设计,从工作性能、经济性两方面对所设计捕集器结构展开设计方法的评价,发现了现有设计方法存在的问题：偏流系数不够精确以及分离段长度计算方法保守。(3)基于多相流管式段塞流捕集器中流场分析方法,将偏流系数与分离段长度计算方法与我国管式段塞流捕集器设计规范结合,提出了管式段塞流捕集器设计方法。采用OLGA软件建立了清管模型,根据不同结构下每根平行管束承担的流量负荷细化了偏流系数；采用FLUENT软件RSM模型和DPM模型建立了圆管内液滴沉降模型,拟合液滴沉降距离与气相流速、内径、气相密度之间的变化规律,得到了分离段长度计算方法。(4)应用了更新的设计方法并对其进行了评价,设备达到设计要求分离效率。因此得出结论：在保证完成分离任务的基础上减小设备尺寸以减少经费投资的目的是可实现的。通过以上研究,本文提出了设计方法更新,以期不断提高段塞流捕集器的设计水平,提高捕集效率,减小经费投资,加快实现管式段塞流捕集器设计生产国产化。
[Abstract]:With the continuous development of gas-liquid two-phase transportation technology, the mixed pipeline has been widely used in marine, polar, desert and offshore gas fields, and slug flow pattern is more common. Slug flow will affect normal pipeline transportation and damage to downstream equipment. Therefore, slug catcher will be set up at the terminal of mixed pipeline under slug operation to eliminate the impact of slug flow on downstream equipment and ensure continuous gas supply downstream. The commonly used type of collector tube type and vessel type slug flow, although the design method at present China has a tube type slug catcher of independent intellectual property rights, but there are still some problems, such as the conservative drift design method, equipment caused by incomplete utilization of the funding and unnecessary investment, so the paper tube a study of slug flow collector design method, in order to improve their working efficiency and reasonable to reduce investment funds. This thesis mainly research on tube type slug catcher design method, completed the following work: (1) from the device structure, analyzes the working principle of the structure of tasks and equipment, equipment of gas-liquid separation mechanism, in order to clear the key design parameters. (2) the typical design methods are analyzed, and the design method of tube type of Panyu 30-1 terminal to Zhuhai pipeline end processing plant slug catcher design, evaluation of design design method of collector collector structure from the two aspects of economic performance, and found the existing design methods of problem: the drift coefficient is not precise enough and calculation method of conservative length separation. (3) multiphase flow tube type slug trap analysis method is based on the flow field, the drift coefficient and separation length calculation method and our tube type slug catcher design specification with proposed collector design method of tube type slug flow. Pigging model was established by using OLGA software, according to the traffic load refinement under different structures of each parallel bundle bear the drift coefficient; a tube droplet settling model using FLUENT software RSM model and DPM model, the fitting variation of droplet settling distance and gas phase velocity, diameter, density of gas phase. The calculation method of separation length. (4) the updated design method was applied and the equipment was evaluated, and the separation efficiency was achieved by the equipment. Therefore, it is concluded that it is possible to reduce the size of equipment to reduce the investment of funds on the basis of ensuring the completion of the separation task. Through the above research, this paper puts forward the renewal of design method, with a view to improving the design level of slug catcher, improving capture efficiency, reducing investment and speeding up the localization and production of tubular slug trap.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TE973

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