Protection device for internally installing magnetostrictive displacement sensor

Abstract

The invention discloses a protection device for internally installing a magnetostrictive displacement sensor. The protection device comprises a base and a cylinder body, a supporting plate is arrangedover the base, an installation groove is formed in the bottom end of the supporting plate, an adjusting mechanism is arranged between the installation groove and the base, a protection shell is arranged above the supporting plate, the four corners at the bottom end of the protection shell are fixedly connected with the upper end of the supporting plate through supporting legs, the cylinder body is located in the protection shell, a protection mechanism is arranged between the cylinder body and the inner wall of the protection shell, the cylinder body is located in the protection mechanism, atriggering mechanism is arranged at the output end of the cylinder body, and a wiring hole is formed in the side, close to the tail of the cylinder body, of the protection shell. The protection devicehas the advantages that the cylinder body and the sensor are both located in the protection shell and cannot be directly exposed outside, and the cylinder body is not in direction contact with external objects either, so that the phenomenon that the cylinder body and the sensor are directly impacted externally and consequently damaged can be well avoided, and thus the service life and the use performance of the cylinder body and the sensor are ensured.

Description

technical field [0001] The invention relates to a protection device with a built-in magnetostrictive displacement sensor, which belongs to the technical field of sensors. Background technique [0002] The magnetostrictive displacement (liquid level) sensor uses the principle of magnetostriction to accurately measure the position by generating a strain pulse signal through the intersection of two different magnetic fields. The measuring element is a waveguide, and the sensitive element in the waveguide is made of special magnetostrictive material. The measurement process is to generate a current pulse in the electronic chamber of the sensor, and the current pulse is transmitted in the waveguide, thereby generating a circular magnetic field outside the waveguide. At the same time, due to the effect of magnetostriction, a strain mechanical wave pulse signal will be generated in the waveguide. This strain mechanical wave pulse signal is transmitted at a fixed sound speed and is...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a protective device for a built-in magnetostrictive displacement sensor, which effectively solves the problem that existing cylinders and sensors in the prior art do not have good protective devices when they are installed and used, and are usually exposed outside. The sensor of the cylinder body is relatively easy to be damaged by external impact, which will seriously affect the service life and performance of the cylinder body and sensor

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