Multifunctional blade and rotor test bench

Abstract

The invention discloses a multifunctional blade and rotor test bench, and relates to the technical field of high-speed blade vibration detection. The multifunctional blade and rotor test bench comprises a workbench, a dynamic measurement system and a static measurement system are arranged on the workbench, the dynamic measurement system comprises a motor driving mechanism, a sliding bearing mechanism, a rotor mechanism and a measurement mechanism, and the motor driving mechanism comprises a motor support and a servo motor; the sliding bearing mechanism comprises a bearing base, a bearing bushand a bearing cover; the rotor mechanism comprises a shaft and a blade disc, and blades are arranged on the blade disc; the measurement mechanism comprises a measuring support, and a measuring sensoris arranged on the measuring support; and the static measurement system comprises a blade clamping piece and a force hammer, a to-be-measured blade is arranged in the blade clamping piece, the hammering point of the force hammer is the blade crown of the to-be-measured blade, and an acceleration sensor is fixedly arranged on the side, deviating from the knocking side, of the blade. The influence of vibration on the blades in different environments is monitored in a dynamic and static combination mode, and the deviation between calculation simulation and actual existence is reduced.

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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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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