Venturi cavitation test system and operation method

A Venturi cavitation test system comprises a water storage tank, a flow speed control pump, a turbine section and an annular flow channel formed by a Venturi test section, and the turbine section is arranged in the direction of the water inlet end of the Venturi test section; the main body of the Venturi test section is a Venturi tube and comprises a first straight tube section, a contraction section connected to the output end of the first straight tube section, a throat tube section connected to the tail end of the contraction section, a diffusion section connected to one end of the throat tube section and a second straight tube section connected to one end of the diffusion section; the inner wall of the diffusion section is of a horn-shaped variable cross section. By the adoption of the structure, the rotating turbine is installed in front of the straight pipe section of the venturi cavitator, the water flow vortex degree of the inlet section of the venturi pipe is improved through rotation of the turbine,