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Laser tracking test device and test method for rotating blade disc

A technology of laser tracking and testing device, which is applied to measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problem of inability to obtain reference signal modal information, etc., and achieve the effect of convenient implementation and simple operation.

Pending Publication Date: 2022-05-27
NANJING VOCATIONAL UNIV OF IND TECH
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Problems solved by technology

However, the above method can only obtain the response of the measuring point position, and cannot obtain a set of reference signals to analyze the complete modal information of the rotating blisk

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  • Laser tracking test device and test method for rotating blade disc
  • Laser tracking test device and test method for rotating blade disc
  • Laser tracking test device and test method for rotating blade disc

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Embodiment Construction

[0038] In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] Next, the present invention is described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not be limited here. The scope of protection of the present invention. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in the actual production.

[0040] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be furth...

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Abstract

The invention discloses a laser tracking test device and test method for a rotating blade disc, and the device comprises the rotating blade disc, a first laser vibration meter, an external scanning system, a second laser vibration meter, a data collection module, and a data processing unit. A speed measurement sensor for obtaining the real-time rotating speed frequency of the rotating blade disc is installed on a shaft rod of the rotating blade disc, the first laser vibration meter is located in front of the rotating blade disc and emits laser beams and receives response signals reflected by the laser beams, and the external scanning system is located in front of the rotating blade disc and receives the laser beams emitted by the first laser vibration meter. According to the invention, the response signal of the measuring point on the rotating blade disc and the reference signal of the fixed reference point are directly measured, and the problem that the frequency response function and the modal shape of the rotating blade disc cannot be obtained in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of vibration testing of rotary leaf disks, in particular to a laser tracking test device and test method for rotary leaf disks. Background technique [0002] As we all know, vibration is a negative and even harmful phenomenon accompanying the normal operation of rotating machinery. Vibration test analysis is aimed at minimizing or eliminating this detrimental effect. In recent years, the real-time monitoring and fault diagnosis of vibration has gradually become an important subject, in which vibration measurement and test analysis play a key role. [0003] At present, in the vibration experiment of the rotating blade, the laser rotation tracking test method of the rotating blade disk in the running state is to control the laser point and the rotating blade disk to rotate synchronously, and obtain the real-time vibration response data of the measuring point on the basis that the two are relatively static. ....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00
CPCG01H9/00Y02E10/72
Inventor 刘翠红缪辉
Owner NANJING VOCATIONAL UNIV OF IND TECH
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