带有测温系统的液固两相流旋转冲蚀试验装置

液固两相流冲蚀磨损过程中,固体颗粒的动能部分转化为热能,使过流部件和料浆液温度升高,冲刷磨损与摩擦热使过流部件材料的磨损速度与腐蚀速度都加快,共同加剧过流部件的损坏,在高速冲蚀磨损条件下,摩擦热效应的影响应引起高度重视。针对目前液固两相流冲蚀磨损试验装置缺乏试样温度实时测试的问题,自行设计研制了一种带有测温系统的旋转式冲蚀磨损试验装置。在被冲蚀试样表面附近、中心和背面附近位置开孔,插入热电偶,通过导线与温度传感器和计算机联接,在线测试并绘制冲蚀磨损过程中试样不同部位的温度变化曲线,具有结构简单、操作便利、数据稳定可靠、直观性好的特点。本装置可以模拟湿法冶金、化工、采矿、水电等冲蚀磨损工况条件,特别是分析测试冲蚀磨损过程中摩擦热量在试样中的产生、传递及其对试样冲蚀磨损特性的影响。

Development of a rotary erosion wear test apparatus with temperature measurement system for liquid solid two phase flow

During liquid-solid two-phase flow erosion wear, part kinetic energy of solid particle convert into heat energy,it makes temperature of flow component and slurry rise, erosion wear and friction heat accelerate the corrosion rate and the wear rate of flow components material, they speed up the damage of flow component.Under the condition of high speed erosion wear, the friction heat effect should be attracted more attentions.In this paper, a rotary erosion wear test apparatus with temperature measurement system is self-designed and developed to carry out real-time measurement of sample temperature during liquid-solid two-phase flow erosion wear test.Three holes were machined near the surface, center, and near the back of the sample for erosion wear test, three thermocouples were inserted and connected to the temperature sensor as well as computer through the wires, thus it can online measure and draw temperature curve of different parts of the sample in the process of erosion wear test.The apparatus has many advantages such as simple structure, convenient operation, stable and reliable data, and good visual features.This device can simulate erosion wear working conditions of wet metallurgy, chemical, mining, hydropower and so on, especially measurement and analysis on generation and transfer of sample friction heat as well as its influence on erosion wear characteristics.