Eccentricity measuring device for non-ferromagnetic metal pipes and corresponding method (Machine-translation by Google Translate, not legally binding)

• Main Authors: PUJOL TORRUELLA, MARC, RUIZ RICART, DAVID, RIERA FONTANA, LLUIS
• Format: Patent
• Language: English; Spanish
• Published: 22.07.2014
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

Eccentricity measurement device for non-ferromagnetic metal tubes, comprising a meter assembly comprising in turn a single probe associated with a system for positioning the probe and a system for translating the probe, so that said probe is capable of moving on the outer contour of the tube to be measured in a rotational direction with respect to the longitudinal axis of said tube, wherein said probe comprises a winding and at least one core of ferromagnetic material, so that in said winding the variation of inductance is measurable produced by a loop of lenz current in the wall of the tube to be measured, reducing the effect of the eddy currents of foucalt and being able to take the probe as many measurements as it is defined and; the corresponding method of measuring the eccentricity is also object of the present invention. (Machine-translation by Google Translate, not legally binding) Dispositivo de medición de excentricidad para tubos metálicos no ferromagnéticos, que comprende un conjunto medidor que comprende a su vez una única sonda asociada a un sistema de posicionado de la sonda y a un sistema de traslación de la sonda, de forma que dicha sonda es capaz de desplazarse sobre el contorno exterior del tubo a medir en una dirección rotativa respecto al eje longitudinal de dicho tubo, en el que dicha sonda comprende un bobinado y al menos un núcleo de material ferromagnético, de modo que en dicho bobinado es medible la variación de inductancia producida por una espira de corriente de Lenz en la pared del tubo a medir, reduciéndose el efecto de las corrientes parásitas de Foucalt y pudiendo tomar la sonda tantas mediciones como se defina y; también es objeto de la presente invención el correspondiente método de medición de la excentricidad.