Probability distribution test device for collision by abrasive particles in solid and liquid two-phase flow on wall surface at different positions

Abstract

The invention discloses a probability distribution test device for collision by abrasive particles in solid and liquid two-phase flow on a wall surface at different positions. The probability distribution test device comprises a solid and liquid two-phase flow circulation system, a pressure sensor and a computer postprocessing system, wherein a solid and liquid two-phase flow circulation system model comprises a submersible pump, an abrasive material box, a stirrer, a hose, a restraint flow channel with a structural surface and an overflow pipe for preventing soft abrasive particles from overflowing; the pressure sensor comprises a strain gauge matrix and a preprocessing circuit; the computer postprocessing system comprises a probability distribution test module for reading a digital signal from the preprocessing circuit through a computer serial port and performing analytic processing on the digital signal; and an average pressure value of each region subjected to grid division during fluent value simulation is used as a pressure signal base value and filtered from a pressure signal obtained from the preprocessing circuit, so that the pressure distribution of the abrasive particles in the solid and liquid two-phase flow on the wall surface at different positions can be obtained. By utilizing the probability distribution test device, the probability distribution of collision by the abrasive particles on the wall surface can be measured precisely.

Description

technical field [0001] The invention relates to the field of precision machining of soft abrasive grain flow, and relates to a probability distribution testing device for abrasive grains colliding with a wall at different positions in a solid-liquid two-phase flow. Background technique [0002] Mold is the basic process equipment for industrial production and the basic industry of the national economy. Now my country has become a big country in mold production and consumption. With the rapid development of automobiles, motors, instruments, electrical appliances, electronics, communications, home appliances, light industry and other fields, the requirements for molds are becoming more and more urgent, the requirements for precision are getting higher and higher, and the requirements for structures are becoming more and more complex. The level of technology has become an important symbol to measure the manufacturing level of a country's products. In the mold manufacturing pro...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiency that the probability distribution of abrasive grains colliding with the wall cannot be truly tested in the existing flow channel of solid-liquid two-phase flow, the present invention provides a solid-liquid two-phase flow grinding machine capable of measuring the probability distribution of abrasive grains colliding with the wall more accurately. Probability distribution test device for particles colliding with wall at different positions

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