Comparison Research on Hydraulic Characteristics of Three Type’s Orifice Plate

ABSTRACT

Orifice plate, with the characteristics of high energy dissipation capacity and convenient construction, has a broad application prospects in China. It is revealed by the means of simulation in this paper that, under the condition of the same contraction ratio and thickness, sharp-edged orifice plate has the highest energy dissipation capacity and squareedged orifice plate has minimum energy dissipation ability among sharp-edged orifice plate, square-edged orifice plate and round-corner orifice plate. However, their capacities of resistance cavitations damage are vice versa. It is important to apply the most suitable shape orifice plate in practical engineering.

Keywords:

Backflow region, comparison, energy loss coefficient, minimum pressure coefficient, orifice plate.