Multi-phase erosion modeling test device

The utility model provides a multi-phase erosion modeling test device comprising a test platform system for holding test pieces, and a uniform multi-phase mixing system, wherein a first input port of the uniform multi-phase mixing system is communicated with an output port of a steam adding system which provides high-temperature high-pressure steam, a second input port of the uniform multi-phase mixing system is connected with an output port of a microparticle adding system which provides microparticles, a third input port of the uniform multi-phase mixing system is connected with an output port of a liquid water adding system which provides liquid water, and an output port of the uniform multi-phase mixing system injects a uniform mixture of high-temperature high-pressure steam, microparticles and liquid water to the test pieces. The device provided by the utility model is capable of uniformly mixing the high-temperature high-pressure steam, the microparticles and the liquid water of different ratios into the multi-phase mixture which is injected to the test pieces, thus completing the modeling test of the test pieces under high temperature, high pressure and high-speed erosion.