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Blisk dynamic similarity test bed

An integral blisk and dynamics technology, applied in vibration testing, machine/structural component testing, measuring devices, etc., can solve the problems of rare test benches, low frequency of testing, single testing content, etc.

Active Publication Date: 2017-08-18
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the experimental devices for blisk tests are static vibration tests or low-order rotational vibration tests of structural parts. There are few test benches for characteristic testing, dynamic characteristic testing of the simulated blisk on the compressor system, and static testing and high-order rotating testing functions.

Method used

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Embodiment Construction

[0072] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0073] Such as figure 1 , 2 , 3, a kind of overall blade disk dynamics similarity test bench includes a base 2, a rotor driving part and a data acquisition part, and the rotor driving part includes a motor 9, a main shaft 19, a primary drum 12, a secondary drum 13. Front cone 11, rear cone 15, grate teeth 18, secondary disc 16, primary disc 17 and model integral blisk 14.

[0074] The power output end of the motor 9 is fixedly connected to one end of the main shaft 19 through a shaft coupling 8 with a nylon rope, and the motor 9 is fixed on the base 2 through the motor seat 1, and the cone 11 and the cone on the main shaft 15. Drum 12, drum 13, wheel disc 16, wheel disc 17, grate teeth 18 and model integral blisk 14 form a low-pressure compressor system, which is fixed on the main shaft 19 through the expansion sleeve 10, and the ma...

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Abstract

The invention discloses a blisk dynamic similarity test bed and a test method. The blisk dynamic similarity test bed comprises a base, a test part and a data acquisition part. The test mainly comprises two parts of static natural frequency test and dynamic natural frequency test on a blisk structural part under a compressor system and a single blisk structural part. A compressor system test part is composed of a rotor driving part, a taper cylinder, a drum, a disk, labyrinth and the blisk and is fixed on a spindle through an expanded copling sleeve; according to the data acquisition part, a sensor is connected with an electric conduction link, the electric conduction link is fixed on the base through an electric conduction link support seat, an LMS test system is further connected, and in the case of the static test, an acceleration sensor can be directly connected onto the LMS test system. Static vibration test and dynamic vibration test on the blisk under a low-pressure compressor experiment system can be met, the experiment cost is reduced, and the experiment cycle is shortened.

Description

technical field [0001] The invention belongs to the technical field of a dynamic similarity test bench for an integral blisk, in particular to a rotor system test bench with an integral blisk based on a dynamic similarity theory. Background technique [0002] In the structural design of the aero-engine compressor abroad, the advanced structure of the integral blisk is adopted, which greatly reduces the weight of the compressor rotor, reduces the weight of the compressor rotor, reduces the number of parts, and also improves the engine. efficiency. On the other hand, the wide application of advanced optimization technology in the structural design of aero-engines makes the structural design more reasonable and plays an important role in the development of high-performance engines. Integral blisks are not only used in engines under development and improvement, but also in engines with a thrust-to-weight ratio of 15-20 in the future. [0003] With the increasingly stringent re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/06G01M7/02
CPCG01M7/025G01M7/027G01M7/06
Inventor 罗忠张慈刘昊鹏李晖王菲
Owner NORTHEASTERN UNIV
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