Large-scale high-speed rotation equipment assembly stress measurement method based on critical refraction longitudinal waves

A technology of critical refraction and assembly stress, which is applied to force/torque/work measuring instruments, measuring devices, and the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, etc., which can solve the problem that the spatial resolution of signal separation cannot be guaranteed at the same time, rotor surface corrosion, measurement Low efficiency and other problems, achieve the effect of multi-point scanning measurement, eliminate corrosion and pollution, and improve measurement efficiency

Active Publication Date: 2021-06-04
HARBIN INST OF TECH
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Problems solved by technology

[0006] The present invention aims to solve the problem that the spatial resolution of the measurement and the separation of the critical refraction longitudinal wave signal cannot be guaranteed at the same time in the stress measurement of the existing large-scale rotary equipment, and the tra

Method used

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  • Large-scale high-speed rotation equipment assembly stress measurement method based on critical refraction longitudinal waves
  • Large-scale high-speed rotation equipment assembly stress measurement method based on critical refraction longitudinal waves
  • Large-scale high-speed rotation equipment assembly stress measurement method based on critical refraction longitudinal waves

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Example Embodiment

[0032] DETAILED DESCRIPTION One: Combination figure 1 and figure 2 According to the present embodiment, a large high-speed rotary equipped fitting stress measurement method based on a critical refractive longitudinal wave is implemented using a measuring device including a side-arranged emitter 1, a first receiving wheel 2, a second receiving wheel 3, and an installation. The transmitting transducer 4 in the emitter 1 is mounted in the first receiving transducer 5 in the first receiving wheel 2 and a second receiving transducer 6 mounted in the second receiving wheel 3, the emitter 1, The axis of the first receiving wheel 2 and the second receiving wheel 3 are disposed in parallel with each other;

[0033] The measurement method includes the steps of:

[0034] Step 1, according to the material characteristics of the rotor member 100, adjust the inclination angle of the emission transducer 4, the first receiving transducer 5, and the second receiving transducer 6, and the emission ...

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Abstract

The invention discloses a large-scale high-speed rotation equipment assembly stress measurement method based on critical refraction longitudinal waves, and belongs to the technical field of rotor stress measurement. According to the invention, the problems that the measured spatial resolution and the separation of the critical refraction longitudinal wave signal cannot be ensured at the same time in the stress measurement of the existing large rotary equipment, and the problems that the traditional ultrasonic method is low in measurement efficiency and poor in measurement precision and causes corrosion to the surface of a rotor are solved. The method is realized by adopting a measuring device, and the measuring device comprises a transmitting wheel, a first receiving wheel, a second receiving wheel, a transmitting transducer mounted in the transmitting wheel, a first receiving transducer mounted in the first receiving wheel and a second receiving transducer mounted in the second receiving wheel. The transmitting wheel, the first receiving wheel, and the second receiving wheel are arranged side by side. The axes of the transmitting wheel, the first receiving wheel and the second receiving wheel are arranged in parallel. The transmitting wheel and the two receiving wheels are filled with the coupling agent, and the situation that in the prior art, the coupling agent must make contact with the surface of the rotor when a traditional ultrasonic method is used is effectively avoided.

Description

technical field [0001] The invention relates to a method for measuring assembly stress of large-scale high-speed rotary equipment based on critically refracted longitudinal waves, and belongs to the technical field of rotor stress measurement. Background technique [0002] Aero-engine rotor-stator parts will generate stress during the manufacturing process, and the resulting stress state varies greatly with various processing methods or processing methods. Mechanical processing such as extrusion, drawing, rolling, correction, cutting, grinding, surface rolling, shot peening or hammering, etc., as well as thermal processing welding, cutting, etc., inevitably cause stress and uneven stress distribution, It will have a significant impact on the fatigue strength, static strength, structural deformation and service life of the rotor-stator parts of the aero-engine, and even cause serious stress concentration, which will lead to microcracks in the rotor-stator parts of the aero-en...

Claims

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Application Information

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IPC IPC(8): G01L5/00G01N29/07G01N29/265
CPCG01L5/0047G01N29/07G01N29/265G01N2291/103G01N2291/2693
Inventor 谭久彬刘恩晓刘永猛孙传智王晓明
Owner HARBIN INST OF TECH
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