Rotary test device for simulating erosion corrosion on inner wall of pipeline

Abstract

The invention relates to the field of an erosion corrosion device and particularly provides a rotary test device for simulating the erosion corrosion on an inner wall of a pipeline, and overcomes the defects that the conventional rotary erosion corrosion test device cannot simulate the erosion corrosion on the inner wall of the pipeline well and a pipe flow type erosion corrosion test device is high in manufacturing cost. The rotary test device disclosed by the invention is provided with a rotating shaft, a slurry tank, a sample clamp and an annular sample. A carbon brush is arranged at the upper part of the rotating shaft and is connected with electrochemical test equipment; the rotating shaft is connected with an output end of a motor which is provided with a frequency converter; the lower part of the rotating shaft extends to a place above slurry in the slurry tank; the rotating shaft is connected with the sample clamp through a rotary joint; and the annular test is mounted on the test clamp. The rotary test device disclosed by the invention combines the advantages of the conventional rotary erosion corrosion test device with the conventional pipe flow type erosion corrosion test device, so that axial erosion corrosion behaviors on the inner wall of the pipe are researched in a rotated condition. According to the rotary test device disclosed by the invention, the flow speed, the medium component and the temperature can be controlled, and real-time electrochemical parameter measurement and zero gravity measurement can be realized simultaneously.

Description

technical field [0001] The invention relates to the field of scouring and corrosion devices, in particular to a rotary experimental device for simulating the scouring and corrosion of the inner wall of a pipeline. Background technique [0002] In the prior art, rotary, pipe-flow, and spray experimental devices are mostly used for erosion corrosion. Among them, the rotary device is based on the tangential force generated by the rotating sample on the sample holder and the stationary liquid, which causes the liquid-solid two-phase to wear It is the same as corrosion or the opposite, but most of the samples used in the rotary type are cake-shaped or cylindrical, neither of which can well simulate the erosion and corrosion behavior of the fluid along the axial direction of the inner wall of the pipeline; while the tube-flow device is based on liquid flow / The static structure of the pipeline can better simulate the erosion and corrosion behavior of the fluid along the axial dire...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a rotary experimental device for simulating the erosion and corrosion of the inner wall of the pipeline, so as to solve the problem that the existing rotary erosion and corrosion experimental device cannot simulate the erosion and corrosion of the inner wall of the pipeline well, and the construction cost of the pipe flow erosion and corrosion experimental device is high question

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