Supersonic gas-solid two-phase flow erosion and wear test device

Abstract

The invention discloses a supersonic gas-solid two-phase flow erosive wear test device. The device comprises a high-pressure gas cylinder, a pressure reducing valve, a needle valve, a pressure meter, a shock tube, pressure sensors, an industrial control computer, a high-speed photographic instrument, a gas collecting box and a test piece installation platform, wherein the shock tube is divided into a driving section and a driven section which are separated by using an aluminum film; the driven section is provided with particles for measuring; the test piece installation platform is arranged in the gas collecting box and directly opposite to a location of an outlet of an observation section; the pressure sensors are arranged on the driven section and the observation section and respectively used for measuring a gas flow speed of the film-ruptured aluminum film and speeds of the particles for measuring; and the high-speed photographic instrument is oppositely arranged to a light source arranged in the wall face of the gas collecting box and arranged on the same optical axis with the light source and used for observing movement tracks of solid particles. According to the device provided by the invention, a practical engineering wear failure case of a pipeline system in the field of coal chemical industry can be simulated, and security researches of a pipeline and value on erosivewear mechanism research, optimum design, risk inspection, security evaluation and lifespan prediction and the like are carried out.

Description

technical field [0001] The invention relates to a scour wear test device, in particular to a supersonic gas-solid two-phase flow scour wear test device used in industrial production. Background technique [0002] Pipeline transportation is developed with the needs of material and process industries. It is widely used in petroleum, chemical, chemical fiber, chemical fertilizer and other process enterprises, and plays a very important role in the development of the national economy. [0003] The study found that the failure of pipelines has various forms and complex mechanisms, such as material defects, corrosion, wear, and external damage, among which wear-thinning failure caused by erosion wear is the most widespread and common failure form in pipeline systems. Erosion wear damage has obvious locality, suddenness, and risk, especially the wear and perforation caused by the flow of solid particles and multiphase flow media is more complicated, it is difficult to predict its o...

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Problems solved by technology

[0007] (1) At present, the research on the mechanism of multiphase flow wear in my country is not deep enough, and the relevant equipment tests take a long time, and the experimental results are difficult to be extended to engineering applications

[0008] (2) Conventional scouring wear test devices often measure the average wear rate by weighing or thickness measurement, and cannot realize the test research on the critical value and transient characteristics of fluid scouring wear damage

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