By the theoretical deduction, the unified solution formulas of the single phase fluid flow characteristics of parallel tubes connecting systems of including type H, J, over J , U, Z , L, over L are given.

• 理论推导获得了典型集箱连接系统，包括H型、J型、倒J型、U型、Z型、L型、倒L型的并联管组单相流体流动特性解的统一表达式。