The velocity characteristics analysis of pressure difference pipeline inner detector

The runningg speed of inner-detector in pipeline has vital influence on detection accuracy, Domestic analysis of inner-detector at present has been stayed in a stage of numerical simulation. Their results may not be totally applied in the control scheme. Accordingly, the motion state of the pressure difference pipeline inner detector was analyzed in order to obtain the mathematical model. Then, we verified the model by experiments. Besides, we drew speed distribution characteristic curves at different discharge hole opening and different fluid flow in pipeline. Then build foundation for speed control of detector.