流变学的水泥砂浆螺旋输送机理

RESEARCH ON SCREW CONVEYING MECHANISM FOR CEMENT MORTAR BASED ON RHEOLOGY

简要介绍了油田水泥砂浆衬里注水管道补口作业机器人的系统结构及工作原理，以水泥砂浆流变学为基础，建立了螺旋输送物理模型，对机器人螺旋送料作业装置的输送机理进行了研究，通过引入螺旋输送效率的概念，解决了水泥砂浆螺旋输送的定量计算问题，进而实现了机器人自主喷涂补口作业的水泥砂浆输送量的准确控制，保证了补口作业质量。实验证明理论分析的正确性，目前该机器人已交付大庆油田在工程中推广应用。

The systematical structure and operation principle of a welding seam anti-corrosion applicator inpipe robot for water injection pipeline with cement mortar liner in oilfield is introduced briefly,the physical model of cement mortar by screw conveying is set up on the basis of its rheology,then screw conveying mechanism of cement mortar when being conveyed by operation unite of the in-pipe robot is analyzed,by introducing the concept of screw conveying efficiency,the quantitative calculation of cement mortar being conveyed by screw conveyor is solved,as a result,that makes the accurate quantitative control for cement mortar through screw conveying feasible when robot mending the welding seem by harmonious operation,the quality of the mending operation is guaranteed,the experiments show the rightness of the theoretical analysis,this robot has already been found its application in Daqing Oil Field.