High-temperature stable magnetic resonance sensor magnet structure and measuring device

Abstract

The invention belongs to the technical field of magnetic resonance detection, and relates to a high-temperature stable magnetic resonance sensor magnet structure and a measuring device, which comprisea magnetic conductive substrate, main magnets respectively placed at four corners of the magnetic conductive substrate, and temperature compensation blocks correspondingly placed at the outer sides of the main magnets, the main magnets on the two sides of the longitudinal gap are magnetized reversely, the magnetizing direction is perpendicular to the magnetic conductive base below, the temperature compensation block on the outer side of each main magnet is opposite to the magnetizing direction of the main magnet, the magnetic conductive base enables the main magnets on the two sides of the longitudinal gap to be communicated, and the purpose of enhancing the static gradient magnetic field on the upper portions of the main magnets is achieved. The temperature compensation block is used forcompensating deviation of a static gradient magnetic field at the upper part of the main magnet caused by temperature rise, so that the problem of measurement error caused by inconformity between theposition of the to-be-detected insulating material and the actual detection position due to lack of a magnet structure with high temperature stability in single-side magnetic resonance detection of the aging state of the insulating material at present is solved.

Description

technical field [0001] The invention belongs to the technical field of magnetic resonance detection, and relates to a high temperature stable magnetic resonance sensor magnet structure and a measuring device, in particular to a high temperature stable magnetic resonance sensor magnet structure and a measuring device for insulating material aging detection. Background technique [0002] Composite insulating materials (such as silicone rubber composite insulators, etc.) will undergo varying degrees of aging from the surface to the inside during the putting into use of the power grid, which will reduce the overall electrical insulation performance of the material. By measuring and analyzing the magnetic resonance signal of the insulating material on the area to be tested, the magnetic resonance detection method can realize the on-site quantitative non-destructive detection of the aging degree of the insulating material, and has great application value in the aging detection of t...

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Problems solved by technology

[0004] In view of this, in order to solve the problem that the unilateral magnetic resonance detection in the aging state of insulating materials currently lacks a magnet structure with high temperature stability, which causes the position of the insulating material to be tested to be inconsistent with the actual detection position, resulting in measurement errors, the problem is provided. A high temperature stable magnetic resonance sensor magnet structure and measuring device

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