【摘要】 针对目前反应型压制去污剂喷洒作业中常出现喷嘴堵塞问题,提出一种压缩空气喷洒反应型压制去污剂的作业方法,设计了一种喷洒专用喷头。建立喷头喷洒过程流体分析模型,基于计算流体动力学方法(CFD)对喷头在不同入口压力下的内部流场压力、流速及喷洒状态进行了模拟。分析表明,当喷嘴入口压力高于2 MPa时,反应型压制去污剂的喷洒雾化均匀。为验证结构设计及分析模型的合理性,搭建喷洒试验装置,对反应型压制去污剂喷洒性能开展了试验研究。实际喷洒效果与仿真结果较为接近;去污剂的喷洒雾化较为均匀,喷洒效果较好。更多还原

【Abstract】 To solve the problem of nozzle blockage in spraying operation of a reaction type coating decontaminant, a method of spraying reactive coating decontaminant with compressed air was proposed, and a special spraying nozzle was designed. A fluid analysis model of nozzle spraying process was also established, and its pressure, velocity and spraying state of the internal flow field of nozzle under different inlet pressures were simulated based on a CFD method. The analysis shows that when the nozzle inlet pressure is higher than 2 MPa, its spraying of reactive coating decontaminant is uniform. In order to verify the rationality of structure design and analysis model, a spraying test device was built, and the spraying performance of reactive coating decontaminant was tested. Its actual spraying effect was close to the simulation result. The spraying atomization of decontaminant was more uniform and spraying effect was better than before.更多还原