Reading head of ring type spatial array torque sensor

Abstract

The invention relates to a reading head of a ring type spatial array torque sensor, which comprises a reading head shell and a U-shaped armature core. The reading head shell is formed by connecting two completely symmetric parts, and is provided with a chamber used for accommodating the U-shaped armature core and a channel for a ring type spatial array steel pipe to penetrate through, two coils are wound on the U-shaped armature core, one coil is an excitation coil inputting excitation current, and the other coil is an induction coil outputting induced voltage signals. The invention realizes the conversion of torque information into electric signals according to the principle of AC electromagnetic induction. The reading head has complete cycles of relative displacement along the mechanical rotating shaft, thereby realizing online dynamic measurement of torque information on the mechanical rotating shaft. Since the reading head is sealed, test conditions are not subject to constraints of the external environment. Therefore, the invention is applicable to torque tests for the mechanical rotating shaft of the hydraulic turbine, in the geological exploration and under other extreme conditions.

Description

technical field [0001] The invention belongs to the field of sensing and measurement control, in particular to a reading head of an annular space array non-contact torque sensor. Background technique [0002] An annular space array torque sensor (ZL200810069912.9) designed by Chongqing University is composed of an annular space array and a magnetoelectric detector. The annular space array is composed of a ring-shaped non-magnetic stainless steel tube and a certain number of magnetic steel balls. The magnetic steel balls are closely arranged in a single row in the tube to form an annular space array; the magnetoelectric detector consists of an aluminum casing It is packaged, and there are: coil group, plastic skeleton and signal processing circuit inside. Among them, the plastic skeleton is installed on the inner wall of the aluminum shell, and the coil group is composed of a main coil and four secondary coils, and the main coil and four secondary coils are wound on the plas...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the present situation that there is still no effective detection method for the measurement of the dynamic torque of the mechanical shaft under extreme environments such as strong impact, high temperature, corrosion, and large vibration, the present invention proposes a reading head of an annular space array torque sensor, which utilizes spherical symmetry characteristics and The principle of AC electromagnetic induction realizes the online dynamic measurement of the torque of the mechanical shaft through the relative displacement along the entire circumference of the mechanical shaft

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