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Detection device and detection method for wide-range vibration amplitude of blade of aviation engine

An aero-engine and vibration amplitude technology, which is applied in the direction of measuring devices, electrical devices, and mechanical parts testing, can solve problems such as the difficulty of monitoring large-scale vibration amplitudes

Inactive Publication Date: 2014-11-19
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention proposes a large-scale vibration amplitude detection device and method for aero-engine blades to solve the difficult problem of large-scale vibration amplitude monitoring in vibration fatigue tests of large-scale fans and compressor blades of aero-engines or gas turbines

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  • Detection device and detection method for wide-range vibration amplitude of blade of aviation engine
  • Detection device and detection method for wide-range vibration amplitude of blade of aviation engine
  • Detection device and detection method for wide-range vibration amplitude of blade of aviation engine

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Embodiment Construction

[0020] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] like figure 2 As shown, the embodiment of the present invention is an aeroengine blade large-range vibration amplitude detection device, which includes: a power supply 1, a fixture 2, a first bridge box 3, a second bridge box 4, and a first millivolt meter 5 , the second millivoltmeter 6 and the reading microscope 12, and also include a spiral lifting support 7, a first current probe 8 and a second current probe 9, wherein, the spiral lifting support 7 is provided with a set for fixing the first current The horizontal fixing frame of the probe 8 and the second current probe 9, the output end of the first current probe 8 is connected to the input end of the first bridge box 3, and the output end of the first bridge box 3 is connected to the first millivolt meter 5 The input terminal of the second current probe 9 is connected to the input terminal...

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Abstract

The invention provides a detection device and a detection method for wide-range vibration amplitude of a blade of an aviation engine. The detection device comprises a power supply, a fixture, bridge circuit boxes, millivoltmeters, a reading microscope, a spiral lifting support and current probes, wherein two transverse fixing supports for fixing the current probes are arranged on the spiral lifting support. An output end of a first current probe is connected with an input end of a first bridge circuit box. An output end of the first bridge circuit box is connected with an input end of a first millivoltmeter. An output end of a second current probe is connected with an input end of a second bridge circuit box. An output end of the second circuit box is connected with an input end of a second millivoltmeter. The power supply is connected with a detected blade which is fixed on the fixture. The detection device and the detection method solve the problem of difficult monitoring of the wide-range vibration amplitude in a blade fatigue test, provide a completely novel test method for monitoring technology of blade and blade tip vibration amplitude in the vibration fatigue test, and expand test technology of vibration stress in the blade fatigue test.

Description

technical field [0001] The invention belongs to the field of strength testing of aero-engine components, in particular to a device and method for detecting the large-scale vibration amplitude of an aero-engine blade. Background technique [0002] In the fatigue strength test of aeroengine blades, the stress value of the fatigue strength assessment of the blade is generally monitored by monitoring the amplitude value of the tip of the blade. Usually, the amplitude value of the blade is read through a reading microscope. figure 1 It is a schematic diagram of the structure of the existing device. As shown in the figure, the existing device includes a fixture, a reading microscope, a dynamic strain gauge and a third millivolt meter. However, when the amplitude of the blade exceeds 20mm, it is difficult for the reading microscope to measure. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention proposes a large-scale vibration amp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00G01H11/06
Inventor 刘伟万利张萌鳌赵忠洋董妍
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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