Venturi pore plate testing device for testing cavitation erosion resistance of material

Abstract

The invention discloses a Venturi pore plate testing device for testing cavitation erosion resistance of a material. The Venturi pore plate testing device comprises a Venturi tube front section, a Venturi tube rear section, a converging type pore plate, test piece regulation bolts, an cavitation erosion resistance test piece, single-end bolts, nuts and test piece position regulation hole bolts, wherein the Venturi tube front section comprises a flange plate; the Venturi tube rear section comprises a flange plate and a test piece position regulation hole group, wherein the test piece position regulation hole group comprises a plurality of test piece position regulation holes; the converging type pore plate is built in a cylindrical cavity formed after the Venturi tube front section and theVenturi tube rear section are connected; bolt holes of the flange plates of the Venturi tube front section and the Venturi tube rear section are coincident, and are fixed by each single-end bolt and each nut in cooperation; the test piece regulation bolts are penetrated into the test piece position regulation holes of a divergent section; the cavitation erosion resistance test piece is fixed on the test piece regulation bolts. According to the Venturi pore plate testing device, the converging type pore plate is used for reinforcing cavitation erosion strength in the device, the test piece regulation bolts are penetrated into different test piece position regulation holes to change the position of the test piece, optimal cavitation erosion test efficiency can be achieved under each workingcondition, and test energy consumption is lowered.

Description

technical field [0001] The invention relates to the technical field of cavitation, in particular to a Venturi orifice plate test device for testing the cavitation resistance of materials. Background technique [0002] For a long time, cavitation has seriously affected the performance and service life of valves, water pumps, hydraulic turbine flow parts and ship propellers. The local cavitation of hydraulic turbines often leads to a decrease in efficiency and even endangers normal operation, resulting in astonishing energy and material losses. With the continuous development of fluid machinery such as ships and water turbines in the direction of high speed and high power, the cavitation problem has become more prominent. This puts forward higher requirements on the cavitation resistance of materials, and the research and application of anti-cavitation materials becomes the key. [0003] Venturi orifice plate cavitation water hole is one of the means to study the cavitation ...

AI Technical Summary

Problems solved by technology

[0003] Venturi orifice plate cavitation water hole is one of the means to study the cavitation resistance of materials. Because the holes of the orifice plate are evenly distributed, the cavitation is uniformly dispersed, the cavitation intensity is low, and there is no relatively concentrated cavitation collapse. In this area, the test period is longer and the energy consumption is larger; at the same time, the position of the cavitation resistance test piece in the Venturi water tunnel cannot be adjusted, and it cannot be guaranteed that it is located in the cavitation concentration area under all working conditions, and the experimental efficiency is low

Images