Perimeter shape measurement system of pipe and method of measuring circumference shape of tube

摘要

PROBLEM TO BE SOLVED: To provide a system for measuring the whole circumferential shape of a tube, for accurately measuring the whole circumferential shape of a tube in a tube group where a plurality of tubes is interspatially arranged.SOLUTION: The system includes: a one-side measurement device 22A that irradiates an outer circumference surface of a tube 12 from one side with probe waves Wa to measure the outer circumferential shape on one side of the tube 12; an other-side measurement device 22B that irradiates the outer circumference surface of the tube 12 from the other side opposing to the one side interposing a tube group 12, with probe waves Wa to measure the outer circumferential shape on the other side of the tube 12, in which a measurement range of the other-side measurement device 22B is configured to overlap a measurement range of the one-side measurement device 22A at both ends of the outer circumferential shape on the other side of the tube 12; and a controller 40 comprising a whole circumferential shape calculation unit 40A that calculates the whole circumferential shape of the tube 12 on the basis of the outer circumferential shape on the one side of the tube 12 and based on the outer circumferential shape on the other side located in the same cross-section of the outer circumferential shape.SELECTED DRAWING: Figure 2