气力输送系统与工程运用(lw2006).doc

气力输送系统与工程运用 管道气力输送技术属于气固两相流,已有百余年历史,曾在相当的一段时间里研究和应用停留在对悬浮稀相管道气力输送的基础研究和组成系统的主要装置部件和构造改进上,以期解决耗能大,物料的破碎,管道等部件的磨损以及管道的堵塞等在实际使用中出现的问题.在20世纪后期20余年中,低速密相气力输送技术的研究开发的成功,使气力输送技术从机理,应用上均有一个新的质的突破.使气力输送技术机械化,自动化,大容量化,合理化运输成为可能,同时由于计算机技术的飞速发展,使以往感到棘手的气力输送过程管道中的复杂流态可以通过流动机构模型的建立用数值统计进行计算,使研究不断深化和定量化;同时,由于制造技术和材料技术的飞跃发展,控制技术和传感技术的长足进步及引用,使低速密相气力输送技术在众多的产业领域成功地被应用,从而解决了以往物料破碎,管道磨损,高耗能等问题,并提高了系统的可靠性和工程的确经济性. 关键字: 气力输送 计算机技术 低速密相气力输送技术 制造技术 材料技术 控制技术 传感技术 可靠性 The piping physical strength transports the technique to belong to the air and solid two flow mutually, already have the history of more than 100 years, once study to stay around the foundation research to suspend sparsely mutually the piping physical strength transport and constitute the main device parts of the system and construct the improvement with application in equal period of time up, resolve to consume the ability with the period big, material of broken up, piping etc. the parts wear away and the piping stop the problem that etc. appears in actual usage.Expect to be in more than 20 years after 20 centuries, the low speed denseness is mutually the physical strength to transport the success of the technical research development, making the physical strength transport the technique from the mechanism, all have a breakthrough of new quality in the application.Make the physical strength transport the technique mechanization, automate, the big capacity turn, rationalizing the conveyance to make possible, at the same time because the calculator flies technically to develop soon, make feel before the tough physical strength transport the process piping in of complications flow the establishment that the complications flows to turn the appearance can pass to flow the organization model to carry on the calculation with the number covariance, make research turned continuously and deeply turn with fixed amount; at the same time, leap the development technically because of the manufacturing technique and materials, control