High-temperature-resistant radial displacement sensor device

Abstract

The invention discloses a high-temperature-resistant radial displacement sensor device which comprises a sensor supporting and sensor probe assemblies. The sensor assemblies which are symmetrically and uniformly distributed on the sensor supporting are composed of sensor probes, wire fixing sheets, wire pressing clamps, wire holders, high-temperature-resistant leading-out wires and induction coils. The sensor probes arearranged on the sensor supporting by fixing bolts through positioning holes; the wire fixing sheets and the wire holders are fixed on the sensor probes through the bolts, the four sensor probe assemblies respectively detect displacement signals of ametal magnetic suspension rotor in the X direction and the Y direction which are perpendicular to each other in the radial direction, and differential measuring is adopted in the same radial direction, so that the precision is high. According to the invention, the displacement of the magnetic suspension rotors is accurately measured in a high-temperature environment, long-time stable work is carried out at a relatively high temperature, disassembly and assembly are convenient on the premise of ensuring the displacement measuring precision, and each part is easy to adjust.

Description

technical field [0001] The invention relates to the field of sensor detection, in particular to a non-contact displacement sensor device, in particular to a non-contact displacement detection sensor device used in a high-temperature environment without 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 rule. The 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. Ordinary eddy current sensors are mainly composed of two parts: a probe and a signal processing circuit. The probe is mainly composed of an enameled wire coil and a coil frame, and the temperature signal processing circuit is mainly composed of modules such as an oscillation circuit, a detection circuit and a filter circuit. ...

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.

Images