▎ 摘　　要

NOVELTY - The sensor has an elastic substrate for restricting an inner wall of a to-be-tested pipeline. A graphene sensor is arranged on a side of the elastic substrate away from an inner wall of the to-be-tested pipeline to detect flow and pressure in the to-be-tested pipeline. The elastic substrate is provided with two elastomers, where the elastomers is formed as an arc-shaped structure and radius of the elastomers is greater than radius of the to-be-tested pipeline within a preset range. An end of the elastic substrate is formed with a butting hole. Another end of the elastic substrate is provided with a bump that is matched with the butting hole. USE - Pipeline graphene composite film sensor. ADVANTAGE - The sensor avoiding enhancement or destruction of the to-be-tested pipeline by a pipeline graphene composite film sensor to realize detection of flow and pressure of the to-be-tested pipeline or gas circuit. DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a pipeline graphene composite film sensor.