新型后混合式磨料水射流系统的研制

Development of New Entrainment Abrasive Waterjet System

提出一种新型后混合式磨料水射流系统,是对传统后混合式磨料水射流系统的重大改进和发明。采用ANSYS Fluent对所提出的新型喷射系统进行了流场仿真,分析两个磨料入口都与大气相通和一个磨料入口与大气相通、一个磨料入口与浆体溶液相连,对这两种方式喷射系统流场进行了对比分析,并通过相应的试验验证了其流场仿真的正确性,为新型后混合式磨料水射流系统的研制提供了理论基础。然后,研制出了新型后混合式磨料水射流系统,该磨料水射流系统由供压系统、喷射系统、搅拌与输送系统组成,并进行了浆体溶液输入量测试和磨料混合效果测试,试验测试表明,该磨料水射流系统效果好、磨料混合均匀、能够实现磨料浓度的任意调节和精确控制。因此,该新型后混合式磨料水射流系统优于传统的后混合式磨料水射流系统,必将促进后混合式磨料水射流系统的更加广泛的应用。

A new entrainment abrasive waterjet system is proposed, the system is a significant improvement and invention of the traditional entrainment abrasive waterjet system. The flow field of new injection system is simulated with ANSYS Fluent, the flow field of the injection system are compared and analyzed for these two ways, which one way is that two abrasive inlet are vented to the atmosphere, another that an abrasive inlet to the atmosphere and an abrasive inlet connected with the abrasive slurry solution. The experiment result verifies that flow field simulation is correctness, providing a theoretical basis for the development of new entrainment abrasive waterjet system. Finally, the new entrainment abrasive waterjet system is developed, the system is made for pressure system, injection system and mixing and delivery system. The input amount of abrasive slurry solution and abrasive mixing effect are tested. The experiment results have shown that the effect of abrasive waterjet system is good, it can achieve the abrasive concentration and precise control. Therefore, the new entrainment abrasive waterjet system is superior to the traditional entrainment abrasive waterjet system, laying the foundation for a broader application of the entrainment abrasive waterjet system.