燃气冷却器橇装制冷机组研制及控制系统设计

发布时间：2018-05-22 12:37

本文选题：燃气冷却器 + PLC　；参考：《西南石油大学》2015年硕士论文

【摘要】：中国海洋石油渤海LD32-2平台有3台燃气发电机组和2台原油发电机组为整个油田供电。目前,在春季、秋季及冬季三个季节期间,燃气发电机组运行良好,但是夏天气温升高,燃气发电机组会出现爆燃现象从而导致停机。针对温度对燃气机的不利影响,研究如何控制燃气进气温度对提高现有发电机组的发电潜力以及节能增效意义深远。本文结合渤海油田燃气发动机的实际需求,开展了燃气冷却器制冷系统的工艺设计、结构设计与控制系统的设计,完成了相应产品的现场试验,取得了较好的研究成果。主要研究内容包括： 1、设计了一种半封闭式压缩机燃气冷却装置。在分析现有燃气制冷技术中的直接接触式冷却和间接接触式冷却方式的基本性能基础上,发现直接接触冷却技术虽然结构简单、成本低,但降温效果差；间接接触冷却方式种类繁多,虽然结构相对复杂,但降温效果好。据此,本文设计了一种结构紧凑、成本低的半封闭式压缩机冷却装置。 2、设计了一套燃气冷却器橇装制冷系统。根据实际情况,设计了一套集板式蒸发器、风冷冷凝器、半封闭活塞压缩、节流装置、载冷剂水箱、自动控制系统等设备于一体的整体橇装式燃气制冷设备。 3、根据系统的控制要求,编写了相应的控制程序,并对触摸屏进行了组态,通过PLC和触摸屏结合,丰富了PLC的控制功能,同时也使控制操作变得更加灵活、简单。触摸屏对燃气冷却器现场的实时参数进行显示,包括温度值、压力值、压缩机运行状态、冷凝器运行状态等,使整套燃气冷却器橇装制冷机组运行更加可视化。 4、对研制的整套设备进行现场安装调试,结果证实系统运行稳定、可靠,达到了设计及工程要求,能取得良好的控制效果,燃气冷却器橇装制冷机组能输出满足燃气发电机燃气温度值的要求。总之,燃气冷却器橇装机组结构紧凑、占地面积小、开机速度快,能满足海上油田工程的应用要求。
[Abstract]:China offshore oil Bohai LD32-2 platform has 3 gas generating sets and 2 crude oil generating sets for the whole oil field. At present, in the spring, autumn and winter three seasons, the gas generating set is running well, but the temperature rises in the summer, the gas generating set will burst and lead to the shutdown. It is of great significance to study how to control the intake temperature of gas to improve the power generation potential and energy efficiency of the existing generating units.
In this paper, based on the actual demand of gas engine in Bohai oilfield, the process design, structure design and control system design of the gas cooler are carried out, and the field test of the corresponding products has been completed, and the good research results have been obtained. The main contents include:
1, a semi closed compressor gas cooling device is designed.
Based on the analysis of the basic performance of direct contact cooling and indirect contact cooling in existing gas refrigeration technology, it is found that the direct contact cooling technology is simple in structure and low in cost, but is poor in cooling effect, and there are many kinds of indirect contact cooling methods. Although the structure is complex, the cooling effect is good. This paper has designed this paper. A semi enclosed compressor cooling device with compact structure and low cost.
2, we designed a set of skid mounted refrigeration system for gas cooler.
According to the actual situation, a set of overall sled gas cooling equipment, such as plate evaporator, air cooling condenser, semi closed piston compression, throttle device, refrigerant tank, automatic control system and so on, is designed.
3, according to the control requirements of the system, the corresponding control program is written, and the touch screen is configured. Through the combination of PLC and touch screen, the control function of PLC is enriched. At the same time, the control operation becomes more flexible and simple. The touch screen displays the real-time parameters of the gas cooler, including the temperature, pressure value, compressor transport. The operation status of the condenser and the running state of the condenser can make the whole gas cooler skid mounted refrigeration unit run more visually.
4, the whole set of equipment developed in the field is installed and debugged. The results show that the system is stable and reliable. The design and engineering requirements can be achieved. Good control effect can be achieved. The gas cooler sled refrigerating unit can meet the requirements of gas generator gas temperature.
In short, the gas cooler skid mounted unit has compact structure, small occupied area and fast start-up speed, which can meet the application requirements of offshore oilfield engineering.
【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】：TE95

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