Experimental system for testing association rule of particle concentration and surface damage

Abstract

The invention discloses an experimental system for testing a particle concentration and surface damage association rule. The experimental system comprises a particle flow mixing section, an erosion testing section and a particle collecting section, the particle flow mixing section is used for ensuring uniform distribution of particles in the loop, the erosion testing section is used for carrying out a particle erosion test, and the particle collecting section is used for temporarily collecting particles in the loop of the whole experimental device. The test elbow in the experiment system can be detached, so that the weight loss measurement of the eroded sample is realized. Besides, the particle collecting device can temporarily store the particles, so that after the test elbow is weighed, the test elbow can be arranged back to the erosion loop, and the next round of erosion experiment can be carried out on the basis of the existing particle accumulation. According to the experimental system provided by the invention, the correlation rule of the particle concentration and the surface damage under the time dimension can be obtained, and an important reference basis is provided for predicting the erosion of the particles in the pipe.

Description

technical field [0001] The invention relates to the field of particle erosion, in particular to an experimental system for testing the correlation rule between particle concentration and surface damage. Background technique [0002] Erosion refers to the phenomenon or process in which small particles of liquid or solid impact the material surface at a certain speed or angle, resulting in material loss (for example, the erosion of mud on pipelines, and the erosion of steam turbine blades by high-speed raindrops). It is widely used in petrochemical, aerospace, hydraulic transportation, mineral processing engineering and other fields. Erosion will cause damage to pipelines, pipe fittings, valves and some equipment, forcing the plant to stop and cause production losses, and replacement equipment will inevitably incur corresponding costs. In addition, erosion will also limit the service life of equipment. Researchers at home and abroad have done a lot of research work on erosion...

AI Technical Summary

Problems solved by technology

Erosion will cause damage to pipelines, pipe fittings, valves and some equipment, forcing the factory to shut down and cause production losses, and the replacement of equipment will inevitably incur corresponding costs. In addition, erosion will also limit the service life of equipment

Researchers at home and abroad have done a lot of research work on erosion under different working conditions by means of experiments. At present, there are mainly three mainstream experimental devices for testing erosion, which are rotary erosion experimental equipment, jet erosion experimental equipment, and pipe flow erosion experimental equipment. They all have their own characteristics, but most of the experiments are carried out under a certain particle concentration and particle velocity, and the results obtained are the erosion rate under the corresponding working conditions, without considering the sample Effect of surface damage and increased particle concentration due to erosion on subsequent erosion

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