Measuring device of oxide in metal tube based on bipolar magnetic probe

A measuring device and metal tube technology, applied in the direction of measuring devices, using electric devices, using electromagnetic means, etc., can solve the problems that monopolar magnetic probes are easily affected by magnetic saturation, the measurement results are not intuitive enough, and the measurement range is small. Achieve the effects of intuitive reading, rapid detection and easy observation
CN101762230AInactive Publication Date: 2010-06-30ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
Publication Date
2010-06-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a measuring device of oxide in a metal tube based on a bipolar magnetic probe and the measuring device is used to measure the stacking weight of oxide in an austenite stainless steel tube. The measuring device comprises a magnetic probe and a detecting instrument which are connected by a wire, wherein the magnetic probe is the bipolar magnetic probe and comprises a packaging shell and a U-shaped permanent magnet of which two poles are exposed out of the shell, a magnetic induction coil which is connected with the detecting instrument is wound on the U-shaped permanent magnet; and the detecting instrument is used to display read numbers by switching and adopting light-emitting diodes. The device adopts the bipolar magnetic probe and the magnetic induction coil to receive signals and is not easy to influence by the magnetic saturation phenomenon so that the detection is faster and more accurate; the probe has simple structure, small volume and flexible operation, the measurement range is up to 0-180 degrees; and the light-emitting diodes are used for display, and the read numbers are more intuitive and clearer and are easy to observe.
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Description

technical field

[0001] The invention relates to a magnetic non-destructive oxide detection device for measuring the accumulation weight of oxides in austenitic stainless steel pipes. Background technique

[0002] Currently, known measuring devices for measuring oxides in austenitic stainless steel pipes generally include a unipolar magnetic probe, a magnetic field sensitive element and a detection instrument. The unipolar magnetic probe is in contact with the austenitic stainless steel tube, and the signal measured by the magnetic field sensitive element is transmitted to the display screen to display the characteristic simulation curve of oxide accumulation in the tube, and the accumulation height of oxide is obtained by calculation.

[0003] Publication No. CN101122639A disclosed in the Chinese Patent Gazette is a Chinese invention patent application titled "Magnetic Non-destructive Measuring Device for Internal Oxide in Austenitic Stainless Steel Pipe", which includes a p...

Claims

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