Turbine blade vibration test experiment table considering multiple contact states
A technology for turbine blade and vibration testing, applied in vibration testing, machine/structural component testing, measuring devices, etc., can solve problems such as lack of versatility, and achieve the effect of simple structure and easy measurement
Active Publication Date: 2019-12-03
NORTHEASTERN UNIV
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Problems solved by technology
[0005] Moreover, the existing turbine blade test bench devices can only perform vibration tests on blade structures of a specific shape. For blades of different shapes, the current turbine blade test bench devices are not suitable and lack sufficient versatility.
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[0040] see figure 1 , a turbine blade vibration test bench considering multiple contact states provided by the embodiment of the present invention includes a base support composed of a first support base 1 and a second support base 22, and is arranged on the first support base 1 and the second support base 22. The tenon force transmission mechanism between the two support bases 22, the tenon force application mechanism fixedly arranged on the front of the first support base 1 and the second support base 22, is fixedly arranged on the first support base 1 and the second support base respectively. The first auxiliary block 5 and the second auxiliary block 20 on the top of the seat 22, the edge plate damper force applying mechanism arranged on the first auxiliary block 5 and the second auxiliary block 20, is arranged on the first auxiliary block 5 And the blade shroud forcing mechanism on the second auxiliary block 20, and the contact vibration measuring device connected with the...
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The invention provides a turbine blade vibration test experiment table considering multiple contact states. The turbine blade vibration test experiment table comprises a base support composed of a first supporting seat and a second supporting seat, a tenon force transmission mechanism arranged between the first supporting seat and the second supporting seat, tenon force application mechanisms fixedly arranged on front faces of the first supporting seat and the second supporting seat, a first auxiliary block and a second auxiliary block, which are fixedly arranged at the tops of the first supporting seat and the second supporting seat respectively, margin plate damper force application mechanisms arranged on the first auxiliary block and the second auxiliary block, leaf crown force application mechanisms arranged on the first auxiliary block and the second auxiliary block, and a contact vibration measuring device connected with a blade. The turbine blade vibration test experiment tableconsidering multiple contact states provided by the invention can simultaneously consider dry friction damping structures at a blade root, a blade margin plate and a leaf crown, and is applicable to different forms of leaf crowns and multiple tenon-mortise forms.
Description
technical field [0001] The invention relates to the technical field of blade vibration test experiments, in particular to a turbine blade vibration test bench considering multiple contact states. Background technique [0002] Turbine blades are an important part of the turbine section of aero-engines and gas turbines. Under the influence of high temperature and high pressure and various complex load excitations, resonance is easily induced. The high-cycle fatigue damage of blades caused by resonance is one of the main reasons for the failure of turbine blades. Therefore, the application of vibration suppression technology is of great significance for reducing the failure probability of blades and improving the reliability and safety of turbomachinery such as aero-engines and gas turbines. . [0003] Friction damping vibration reduction is a widely used vibration reduction method, which has the advantages of wide working margin, good vibration reduction effect, and can work ...
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Login to View More IPC IPC(8): G01M7/02
CPCG01M7/02G01M7/027
Inventor 李朝峰杨沛强刘晓文程昊佘厚鑫
Owner NORTHEASTERN UNIV