Elbow wear is a major threat to the multiphase pipeline transportation industry, which has a negative impact on the stable operation of the transportation system. In order to find the wear reduction methods of elbows in the fluidization pipeline transportation system for 2000-meter-deep coal resources, the swirler was installed upstream of the elbows, and wear simulations and tests of three kinds of elbows were carried out. The results showed that the maximum wear rate (MWR) of elbows increased and then decreased along the elbow angle. Due to the different directions of gravity, the heavy wear position (HWP) of the horizontal-vertical (H-V) elbow was in front of the vertical-horizontal (V-H) elbow. Because the downstream portion of the horizontal-horizontal (H-H) elbow was still a horizontal pipe, the HWP of the H-H elbow almost covered the whole elbow. The swirler placed upstream of the elbows could make the particles at the elbow move to the intrados of the elbows, resulting in less collision between the particles and the extrados of the elbows, thus reducing the wear of the elbows. The wear reduction effects of swirlers on three different elbows were favorably connected with the guide vane angle (GVA) and negatively correlated with the guide vane length (GVL), decreased first and then increased as the guide vane height (GVH) increased, and were little affected by the guide vane number (GVN) and the guide vane thickness (GVT). The mathematical models between the MWR of the elbows and guide vane parameters were established. By bench tests, the wear reduction effect of three kinds of elbows under the optimal guide vane parameters was 58.4%, 76.9%, and 78.6%, respectively. The errors between the bench test results and the simulation results were around 10%.

弯头磨损是多相管道运输行业的一大威胁，对运输系统的稳定运行产生负面影响。为了寻找2000米深煤炭资源流化管道输送系统中弯头减少磨损的方法，在弯头上游安装旋流器，对3种弯头进行磨损模拟和试验。结果表明，弯头最大磨损率（MWR）沿弯头角度先增大后减小。由于重力方向不同，水平-垂直(HV)弯头的重磨损位置(HWP)位于垂直-水平(VH)弯头的前面。由于水平-水平（HH）弯头的下游部分仍然是水平管道，因此HH弯头的HWP几乎覆盖了整个弯头。旋流器设置在弯头上游，可以使弯头处的颗粒向弯头内弧面移动，减少颗粒与弯头外弧面的碰撞，从而减少弯头的磨损。旋流器对三种不同弯头的磨损减少效果与导叶角度（GVA）呈正相关，与导叶长度（GVL）呈负相关，随着导叶高度（GVH）的增加先减小后增大，受导叶数（GVN）和导叶厚度（GVT）影响不大。建立了弯头MWR与导叶参数之间的数学模型。经台架试验，三种弯头在最佳导叶参数下的减磨效果分别为58.4%、76.9%和78.6%。台架测试结果与仿真结果之间的误差在10%左右。