Multifunctional blade and rotor test bench
A multifunctional, test bench technology, applied in vibration testing, testing of machine/structural components, measuring devices, etc., can solve problems such as calculation simulation deviation, complex boundary conditions of shafting, etc., and achieve the effect of expanding the scope of application
Active Publication Date: 2021-11-02
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology
[0003] Judging from the existing literature, there is still a big gap between the theoretical results of the research on the anti-vibration performance of shrouded blades and the actual engineering application. The boundary conditions of the shafting system are complex during the operation of the unit, resulting in a large deviation between the calculation simulation and the actual situation. ,waiting to be solved
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[0033] The present invention provides a multifunctional blade and rotor test bench. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0034] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily to describe a specific order or sequence. It should be understood that the data so used are interchangeable under appropriate circumstances. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover non-exclusive inclusion, for example, a system, product or device comprisin...
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The invention discloses a multifunctional blade and rotor test bench, which relates to the technical field of high-speed blade vibration detection, and includes a workbench on which a dynamic measurement system and a static measurement system are arranged. The dynamic measurement system includes a motor drive mechanism, a sliding bearing mechanism, and a rotor. Mechanism, measuring mechanism, motor drive mechanism includes motor bracket and servo motor; sliding bearing mechanism includes bearing base, bearing bush and bearing cover; rotor mechanism includes shaft and blisk, blades are arranged on blisk; measuring mechanism includes measuring bracket, measuring bracket The measuring sensor is set on the top; the static measuring system includes a blade holder and a force hammer, the blade to be tested is set in the blade holder, the hammer point is the crown of the blade to be tested, and the blade is fixed on the side away from the knock An acceleration sensor is provided. The impact of vibration on blades in different environments is monitored through a combination of dynamic and static methods to reduce the deviation between calculation simulation and reality.
Description
technical field [0001] The invention relates to the technical field of high-speed blade vibration detection, in particular, it relates to a multifunctional blade and rotor test bench. Background technique [0002] Blades are the key components for large power machinery to convert thermal energy into mechanical energy. When the steam turbine unit is in operation, due to the influence of the harsh environment such as high pressure, high temperature, high speed and wet steam area, coupled with the combined effects of centrifugal force, air flow excitation force, vibration and high-speed erosion of water droplets damage in the process, resulting in a steam turbine accident. Among them, the steam turbine accidents caused by the damage of steam turbine blades caused by vibration account for the vast majority of the total accidents. [0003] Judging from the existing literature, there is still a big gap between the theoretical results of the research on the anti-vibration perform...
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IPC IPC(8): G01M7/02
CPCG01M7/02G01M7/025G01M7/027
Inventor 汪浩洋张青雷段建国秦际赟刘震
Owner SHANGHAI MARITIME UNIVERSITY