关键词: 月牙肋岔管, 流态, 导流板, 锥管曲面

Abstract: The existing design of guide plate in reinforced branch pipe has some deficiencies in the improvement of flow regime inside design and construction. A design method of guide plate with conical surface is presented in this paper. The rolling conical surface with single curvature is chosen as guide plate surface, which could make joint of the guide plate and the crescent-rib smooth and reasonable. And the surface equation of the flow guide plate is derived. At present, the guide plate with conical surface has been successfully applied to the crescent-rib reinforced branch pipe of a hydropower station.

Key words: crescent-rib reinforced branch pipe, flow regime, guide plate, conical surface