新型聚氨酯检测器设计与仿真

针对在役管道日常维护中,聚氨酯清管器具有良好通过性但不具备检测能力,而钢骨架变形检测器具备检测能力但存在卡堵风险的问题,设计出一种用于管道内的多功能聚氨酯检测器.该检测器在聚氨酯载体中放置传感器单元,在实现高通过性的同时,也可有效检测管道的形变.通过ABAQUS模拟聚氨酯载体在管道存在结垢时的形变;通过COMSOL对管道内有无结垢或凹陷时传感器单元信号进行仿真,并采用正交试验的数学模型优化传感器单元.模拟仿真结果验证了多功能聚氨酯检测器设计的可行性.

Design and simulation of new polyurethane detector

In order to solve the problem in daily maintenance of pipeline in service that the polyurethane pigging has good pass ability but no detection ability, whereas the steel skeleton deformation detector has the detection ability but risking block-up, a multifunctional polyurethane detector used for pipeline was designed. A sensor unit was placed in the polyurethane carrier in the as-proposed detector, which could not only achieve the high passability, but also effectively detect the pipeline deformation. ABAQUS was used to simulate the deformation of polyurethane carrier with the presence of scaling in pipeline, COMSOL was used to simulate the sensor unit signal with or without scaling or sinking in the pipeline, and the mathematical model for orthogonal tests was used to optimize the sensor unit. Furthermore, the simulation results confirmed the feasibility of multifunctional polyurethane detector.