Open-loop electromagnet magnetization device

Abstract

The invention belongs to the magnetization technology and relates to an open-loop electromagnet magnetization device, which comprises an open-loop solenoid and an electromagnet. The electromagnet is arranged between an outer conductor wire ring and an inner conductor wire ring of the open-loop solenoid and used for absorbing a reverse magnetizing field of the outer conductor wire ring while supplementing a forward magnetizing field, so that the magnetization effect is the same with that of the conventional solenoid magnetizer having an all-loop closed structure. The mechanism for realizing the open-loop electromagnet magnetization device is characterized in that the electromagnet is arranged between the forward conducting current and the reverse conducting current and capable of absorbingthe reverse magnetizing field of the reverse conducting current in a magnetizing region while realizing magnetization supplementing to the forward magnetizing field in the magnetizing region. The electromagnet magnetization device has the open-loop structure, namely has a 'split' structure, so that an object to be magnetized is not required to penetrate through to be sleeved from the end but can be directly 'clamped' to be sleeved. Accordingly, the electromagnet magnetization device can realize electromagnet magnetization non-destructive detection for components without ends or with both endsanchored, and also is suitable for applying electromagnetic excitation perpendicular to the direction of the human body to the cranial cavity in the brain biology magnetic stimulation therapy.

Description

technical field [0001] The invention belongs to the magnetization technology, in particular to an open-loop magnetic flux leakage nondestructive detection electromagnetic magnetization device. Background technique [0002] Magnetic excitation is one of the primary key technologies of magnetic flux leakage detection, and there are often different magnetization methods and structural requirements for different detection objects and working conditions. Compared with the permanent magnet magnetization device, the electromagnetic solenoid magnetization device has the advantages of being able to flexibly adjust the magnetization intensity, no magnetic pole lift-off effect, and no strong magnetic adsorption force. However, the existing electromagnetic solenoid is a full-circumferential ring-type closed structure, and it cannot be looped on itself without ends or even if there are two ends but the ends are too large or are anchored to be magnetized, especially as coal mines or ports...

AI Technical Summary

Problems solved by technology

However, the existing electromagnetic solenoid is a full-circumferential ring-type closed structure, and it cannot be looped on itself without ends or even if there are two ends but the ends are too large or are anchored to be magnetized, especially as coal mines or ports. Steel wire ropes for lifting (closed-loop rotary without ends), partially buried pipelines (the ends are buried and anchored), rails (connected with ground anchors), cable-stayed bridge cables, and tourist overhead wire ropes (anchored at both ends), etc. Realize the non-destructive detection of electromagnetic magnetization and magnetic flux leakage of such components; in addition, it is not suitable for applying electromagnetic excitation perpendicular to the direction of the body to the cranial cavity in brain biomagnetic stimulation treatment

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