Apparatus and Methods for Measurements of Pressure

摘要

A strapping device for a pipe and methods of using the strapping device to non-invasively detect pressure inside the pipe and the residual stress exerted on the pipe. The strapping device includes a linked or a solid band adapted to be fitted around an outside diameter of the pipe. The strapping device further includes a sensor for measuring at least one of a change in the outside diameter of the pipe due to a corresponding change in pressure inside the pipe and to detect the stress or strain transferred from the pipe. The measurements can be conveniently processed in a circuit board coupled to the strapping device or in a remote location. The measurements can be transmitted through wires or digitally transmitted to the circuit board.

主权项

1. A strapping device for measuring pressure inside a pipe, the strapping device comprising:
(i) a band for secureable clamping onto an outer surface of the pipe; and (ii) a sensor, wherein the sensor is installed on the band,
wherein the strapping device is configured for non-invasively sensing and measuring at least one of:(a) a change in an outer diameter of the pipe; and(b) a change in a residual stress exerted on the pipe,
wherein the change in the outer diameter of the pipe and the change in the residual stress exerted on the pipe are associated with a corresponding change in pressure inside the pipe.