Experimental device for researching influence of pressure on elbow abrasion

Abstract

The invention relates to the field of fluid mechanical engineering and aims at providing an experimental device for researching influence of pressure on elbow abrasion. The device has the characteristics that circuit flow is not changed and only lift is changed. The device is used for researching and recognizing the characteristics of abrasion of solid-liquid two-phase flows in a pressure elbow and provides theoretical guidance basis for designing and calculating industrial devices. The experimental device for researching the influence of pressure on elbow abrasion is characterized by comprising a centrifugal pump group, an adjusting valve, an experiment elbow and a water tank which are sequentially communicated with each other through pipelines to form a circulation loop; a flow meter anda pressure meter are arranged on the pipelines, a particle releasing device is arranged on the pipeline between the pressure meter and an experiment elbow, the outside of the experiment elbow is wrapped by a sealed box body which can adjust pressure, and a particle collecting net for collecting particles is arranged at the upper part of the water tank.

Description

technical field [0001] The invention relates to the research on wear of flow-passing parts by solid-liquid two-phase flow in the field of fluid mechanical engineering, in particular to an experimental device and method for pressure change in solid-liquid two-phase flow on the wear of variable-curvature pipelines, which can prevent solid particles from entering the experimental pipeline Post-wear studies. Background technique [0002] Solid-liquid two-phase flow conditions are common in petroleum, chemical, water conservancy, power and other fields; solid-liquid two-phase wear of fluid machinery internal parts and transportation pipelines is a common form of wear in modern industrial production, which causes Industrial hazards and economic losses are getting more and more attention. In the production of solid-liquid two-phase transportation, the flowing particles are restricted by many factors, such as turbulent flow intensity, gravity, fluid force, particle itself and colli...

AI Technical Summary

Problems solved by technology

At present, many researchers have studied the movement of solid-liquid two-phase flow in elbows from different angles, but most of the research starts from the solid phase parameters (concentration, diameter, density, etc.) and the flow characteristics of the liquid phase. There are already some relatively complete models for predicting wear; however, there are few studies on the influence of pressure in production circuits on wear, and due to the correlation between flow velocity and pressure during fluid movement, the experiments carried out are also limited. No studies have been done with stress alone

Because many pipelines are subjected to high pressure when transporting fluid, the pipe wall will be subject to greater internal pressure, which can easily cause fatigue cracks in some discontinuous pipeline parts, making solid-liquid two-phase wear more likely to occur

Images