A method and device for adding large particles to solid-liquid two-phase flow transport experiments

Abstract

The invention provides an adding method and a device suitable for conveying experimental large particles in a solid-liquid two-phase flow, which are characterized in that: the device comprises a particle injection hopper, a two-phase fluid return pipeline with branch pipelines and a liquid storage tank. The particle injection hopper is mounted in the liquid storage tank; the particle injection hopper is connected with a pump suction pipeline inside the liquid storage tank through a particle injection pipeline; a gate valve with a filter screen is mounted between the particle injection hopper and the particle injection pipeline; a filter screen is arranged at a liquid-phase suction section of the pump suction pipeline inside the liquid storage tank; the liquid-phase suction section of the pump suction pipeline inside the liquid storage tank sucks in liquid in the liquid storage tank; a two-phase fluid return branch pipeline and a liquid return branch pipeline are arranged on the two-phase fluid return pipeline; the two-phase fluid return branch pipeline is used for returning solid-liquid two-phase fluid to the particle injection hopper; and the liquid return branch pipeline returns partial liquid to the liquid storage tank. According to the method and the device, the device has a simple structure, the adding and the recycling of the large particles are convenient, the concentration of the particles is convenient to control, the mixing of the particles is even, and the pipelines are convenient to flush.

Description

technical field [0001] The invention relates to a method and device for adding large particles suitable for solid-liquid two-phase transport experiments. Background technique [0002] The experimental medium of the two-phase flow is a solid-liquid mixture, and the solid-phase particles are easy to separate and settle in a static state. Therefore, in order to keep the concentration of the solid-liquid two-phase uniform during the transportation process, there are special requirements for the design of the two-phase mixing system. Require. Most of the existing experimental devices for solid-liquid two-phase transportation need a slurry storage tank and a stirring device. The solid-liquid two-phase is mixed in the slurry storage tank through the agitator. Considering the problems of solid particles depositing and clogging in the pipeline after the pump is stopped, it is also necessary A line cleaning system is required. The existing experimental device for solid-liquid two-ph...

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Problems solved by technology

[0003] In view of the above-mentioned problems existing in the complexity of the existing solid-liquid two-phase transport experimental device and the large-particle solid-liquid two-phase transport experimental device, the purpose of the present invention is to provide a method that can ensure that large particle materials are conveniently added, particle concentration is conveniently controlled, and particles enter evenly. The method and device for adding large particles suitable for solid-liquid two-phase transportation experiments are suitable for test pipelines, easy recovery of particles, and convenient flushing of pipelines

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