在石油化工系统的反应器中 ,常用球形体作催化剂床层表层及底层填料。为探明流体通过这种球形体孔隙间的流阻特性 ,进行了两种球形体 (整形球及异形球 )的水力模型试验研究。结果表明 :1)这两种球形体孔隙间的流动均处于紊流的过渡粗糙区 ;2 )所研究的异形球体 ,在Ren =6 0 0 0～ 140 0 0范围内 ,其水力坡度比整形球体的水力坡度小 17%～ 30 %。所以 ,应用该种异形球体作石油化工系统反应器中催化剂床层的表层及底层填料 ,能增加反应器负荷、增加产值 In petrochemical systems reactors, spherical bodies are commonly used as catalyst bed top and bottom packings. In order to find out the fluid resistance characteristics of the fluid passing through the pores of this spherical body, the hydraulic model tests of two spherical bodies (shaping balls and deformed balls) were carried out. The results show that: 1) the flow between the two spherical pores is in the turbulent transition rough area; 2) the deformed spherical body under the condition of Ren = 6 0 0 ~ 140 0 0, Spherical hydraulic gradient of 17% to 30%. Therefore, the use of the special-shaped spheres for the petrochemical system reactor bed and the bottom of the catalyst bed filler, can increase reactor load and increase output value