THERMOGRAPHIC IMAGER PROCEDURE
Publication Date: 2015-Oct-27
The IP.com Prior Art Database
A method is proposed to inspect piping remotely to identify defects or malfunctioning using thermographic imaging procedure The thermographic imaging is applicable to identifying abnormalities or defects in all areas of testing or manufacturing where temperature differentials are identifiable The defects may be associated with areas of heat buildup due to stress on pipe samples being tested manufactured for example In operating pipelines valve failure or malfunction could be detected by heat buildup or uniform temperature as the case may indicate The thermographic imager camera data could support other sensor data such as stress sensor data acoustic or other data in identifying defects
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The invention relates to remote monitoring of equipment or manufacturing process to detect defects or anomalies. Currently it is difficult to identify an anomaly during manufacture of pipes and tubes without sophisticated equipment. Inspecting valves and piping also is a challenging task, where operations may have to be interrupted in order to inspect for malfunction. Currently thermography is being used to check for hot spots by sensing heat being emitted from faulty electrical installations such as terminals, electrical cabinets, section boards etc. A method is proposed here to inspect piping remotely to identify defects or malfunctioning using thermographic imaging procedure.
BRIEF DESCRIPTION OF DRAWINGS
The invention discloses method to inspect equipment or installations remotely to identify defects or malfunctioning using thermographic imaging, wherein:
FIG. 1 illustrates differences in temperature of pipe in the IR image indicating non-uniform thickness.
FIG. 2 shows temperature buildup in the top pipe in the IR image indicating valve sticking.
FIG. 3 shows heat buildup in one pipe showing valve failure.
FIG. 4 is an IR image showing overheating of motor windings due to insulation failure.
FIG. 5is anIR image showing failure of the second valve from the top.
The invention proposes thermographic imaging to highlight abnormalities or defects in all areas of testing or manufacturing procedures where temperature differentials are identifiable. The defects may be associated with areas of heat buildup due to stress on pipe samples being tested/manufactured, for example. In one example shown in FIG. 1, the thermographic image on the left hand side shows non-uniform temperature distribution due to differences in wall thickness along the length of the pipe that is not detectable optically.
In another example illustrated in FIG. 2, where uniform flow is expected, heat buildup is visible in the upper pipeline on the IR image in the left hand side. The heat buildup indicates sticking of the flow control valve, whereby tempera...