中文摘要：

本文讨论了一种用于气动输送系统的喷射器组（jet—pair），由通过吸入口相联接的压空喷射器和真空喷射器组成，通过气液活塞式换能运动，产生脉冲液压做功以输送流体。该喷射器组在做功过程中不仅处于变工况状态，而且其设计尺寸及交替工作时间必须相互搭配，因此需要一套不同于传统喷射器设计的方法。本文基于对喷射器组的仿真试验结果，研究了压空喷射器不同于传统喷射器的设计思路，以及真空喷射器气源压力、喷嘴直径、面积比、喉管长径比对喷射系数的影响，得出了喷射器组优化结构的配套思路，为喷射器组的工业设计打下了基础。

英文摘要：

Jet-pair, a kind of used in pneumatic conveying system, is discussed in this paper. It contains a double jet, which connect each other with their suction port. It can produce pulse hydraulic power to transport liquid with air-liquid charge vessel drived by compress air. During operating process, the jet-pair is not only in the unsteady condition, and their alternative operating time must match the design size. Therefore, a different design method from traditional is needed. Based on the simulation test results of the jet-pair, a new design principle which is different from the traditional jet design for the compress jet has been proposed. The vacuum jet operating pressure, nozzle diameter, area ratio and throat diameter ratio influence the coefficient of jet-pair. The optimized match structure has been drawn for the basically industrial design.