A high temperature resistant radial displacement sensor device

Abstract

The invention discloses a high temperature resistant radial displacement sensor device, comprising: a sensor support, a sensor probe assembly; the sensor assembly symmetrically and evenly distributed on the sensor support consists of a sensor probe, a wire fixing piece, a crimping clip, a wiring seat, a Composed of high-temperature lead wires and induction coils; the sensor probe is installed on the sensor support by fixing bolts through the positioning hole, the fixing piece and the terminal block are fixed on the sensor probe by bolts, and the four sensor probe components respectively detect the radial direction of the metal magnetic levitation rotor. The X and Y direction displacement signals perpendicular to each other, the differential measurement accuracy is higher in the same radial direction. The invention accurately measures the displacement of the magnetic levitation rotor in a high-temperature environment, works stably for a long time at a relatively high temperature, and has the advantages of convenient disassembly and assembly and easy adjustment of various parts under the premise of ensuring the accuracy of displacement measurement.

Description

technical field [0001] The present invention relates to the field of sensor detection, in particular, to a non-contact displacement sensor device, and in particular to a non-contact displacement detection sensor device that is used in a high temperature environment and does not require welding. Background technique [0002] A sensor is a device used to sense the measured information and convert the sensed information into an electrical signal or other signal output according to a certain law. Eddy current displacement sensor is a kind of non-contact sensor, which has the advantages of non-contact, large measurement range, high resolution and fast response speed and is widely used. The common eddy current sensor is mainly composed of two parts: the probe and the signal processing circuit. The probe is mainly composed of enameled wire coil and coil skeleton, and the temperature signal processing circuit is mainly composed of oscillation circuit, detection circuit and filter c...

AI Technical Summary

Problems solved by technology

However, since the welding method of the detection coil and the external circuit is ordinary soldering, the device cannot perform long-term stable measurement in a relatively high temperature environment (above 400°C), because the welding part is easily melted and the circuit is broken, resulting in measurement The circuit is unstable and cannot be measured for a long time

[0004] In the existing technology, there is no non-contact displacement sensor device with no lead solder joints for magnetic suspension bearings under high temperature environment, which is accurate in measurement, simple in structure and easy to assemble.

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