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A Method of Measuring Axial and Radial Displacement of Rotor Using Tapered Surface

A technology of radial displacement and conical surface, applied in measuring devices, instruments, etc., can solve the problems of affecting measurement accuracy, poor measurement linearity, limited range, etc., and achieve the effect of ensuring measurement accuracy, wide linear range and simple method.

Active Publication Date: 2020-11-17
雷茨智能装备(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is difficult to manufacture the auxiliary device, and the installation position of the sensor is strictly required, and the junction must be strictly aligned; the measuring range is very limited, and it cannot be detected if the junction deviates from the sensing range; it involves the transition between different materials, resulting in poor linearity
Since the conical surface is a continuous surface, the measuring range is increased compared with the stepped surface, and there is no strict requirement on the installation position of the sensor. However, since the inclined surface is detected by the inclined angle instead of the facing angle, it does not meet the requirements set by the sensor, and the measurement accuracy and Linearity is affected; in order to decouple the axial displacement from the direct measurement results, additional sensors for measuring radial displacement are required
In addition, all the above methods select some indirect quantity for measurement, and the sensitivity needs to be re-calibrated through experiments. The error of the calibration experiment will further affect the measurement accuracy.

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  • A Method of Measuring Axial and Radial Displacement of Rotor Using Tapered Surface
  • A Method of Measuring Axial and Radial Displacement of Rotor Using Tapered Surface

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Embodiment 1

[0020] Example 1, such as figure 1 As shown, a method of measuring the axial and radial displacement of the rotor by using the conical surface, first process the conical measuring surface 3 on the rotor, and then arrange the first non-contact displacement sensor symmetrically in a cross section passing through the rotor axis 1 and the second non-contact displacement sensor 2, the installation axis of the first non-contact displacement sensor 1 and the second non-contact displacement sensor 2 is perpendicular to the outer surface of the tapered measuring surface 3; the specific type of non-contact displacement sensor is not The limit can be eddy current, inductive, capacitive or photoelectric and other types; the non-contact displacement sensor can be an integrated sensor that integrates the measuring probe and the signal processing unit, or it can be an independent branch of the two. If the integral sensor is a split sensor, the first non-contact displacement sensor 1 and the ...

Embodiment 2

[0031] Embodiment 2, according to the same method as in the above embodiment, multiple measuring sections can be arranged on the same cone surface to measure the axial and radial displacement of the rotor in different sections. figure 2 It is an implementation of two mutually perpendicular measurement sections. The first non-contact displacement sensor 1 and the second non-contact displacement sensor 2 measure the displacement output ΔU of the rotor in the radial x direction x and axial displacement ΔU z1 , the third non-contact displacement sensor 4 and the fourth non-contact displacement sensor 5 measure the displacement output ΔU of the rotor in the radial y direction y and axial displacement ΔU z2 , two axial displacements ΔU z1 and ΔU z2 It can be used as independent two-way axial displacement measurement signal output to realize redundant measurement, or can be further added to become one-way signal output to double the sensitivity of axial displacement measurement. ...

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Abstract

The invention discloses a method for measuring axial and radial displacements of a rotor by using a conical surface. The method comprises the following steps: processing a conical measuring surface coaxial with the rotor on the rotor, arranging displacement measuring devices around the conical measuring surface and perpendicular to the conical measuring surface, measuring, by each displacement measuring device, relative displacement of the conical measuring surface relative to the displacement measuring device, and processing the relative displacements of all the displacement measuring devicesto obtain the axial and radial displacements of the rotor during movement. The axial and radial displacements of the rotor can be measured simultaneously, the measuring range is wide, the linear range is wide, implementation is easy, and applicability is high.

Description

technical field [0001] The invention relates to the technical field of rotor axial and radial displacement measurement, in particular to a method for measuring the axial and radial displacement of a rotor by using a tapered surface. Background technique [0002] At present, the axial displacement and radial displacement of most rotors are measured separately. Generally, the sensor for measuring radial displacement is installed on the side of the rotor, and directly measures the rotating surface along the radial direction; the axial displacement of the rotor is measured by Axially mounted sensors detect the displacement of an end face on the rotor for direct measurement. However, in some occasions, the axial space of the rotor system is limited, or the rotor structure is special, which makes it impossible to install sensors in the axial direction. Therefore, various methods for measuring axial displacement by installing displacement sensors in the radial direction have been p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/02
CPCG01B21/02
Inventor 孙岩桦王璐田中梁刘晨阳杨涛吴鹏飞
Owner 雷茨智能装备(广东)有限公司