摘要
TCP增压多级起爆技术的增压装置是整个射孔过程最重要的部件之一,枪与枪之间的油管及其内部射孔液受到爆轰波的增压和井下围压的共同作用,应用流体力学有限元法对其进行有限元数值仿真,得到了油管內射孔液的沿程压力损失和平均流动速度。通过部分试验验证,数值计算结果误差在5%之内,说明该计算模型和模拟分析方法合理、可行。作为算例,分别计算了不同温度下油管内流体沿程压力损失的情况。结果表明:温度对沿程压力损失影响较小。这为TCP增压多级起爆技术的研究提供科学的基础,从而提高产品的安全可靠性和实用性,减少试验成本。
The pressure device of TCP boosting multistage detonating technique is one of the most important components.The oil-pipe is subjected to coactions of detonation wave’s pressure and confining pressure,which is analyzed by fluid mechanics finite element method.Loss pressure along oil-pipe and mean flow velocity are obtained.The relative error of numerical results is within 5%,which is verified by part experiments.The study indicates that the calculation model and simulation method are reasonable and feasible.As an example,different temperatures effects on loss pressure along oil-pipe are calculated.The results display that loss pressure along oil-pipe changes little during temperature increasing.All these provide scientific foundations for boosting multistage detonating technique.Reliability and practicality of products are enhanced,and experimental cost is reduced.
出处
《科学技术与工程》
2010年第27期6731-6734,共4页
Science Technology and Engineering
关键词
油管
射孔液
沿程压力损失
数值仿真
oil-pipe perforating fluid pressure losses at the pipes’ surfaces and within the liquids numerical simulation