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Experimental device of steam turbine to simulate localized vibration of detuning turbine disc

An experimental device and localized technology, which is applied in the testing of machines/structural components, measuring devices, vibration testing, etc., can solve problems such as localized vibration, and achieve the effect of simple and convenient operation

Pending Publication Date: 2019-07-09
SHENYANG INST OF ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to use the experimental device for simulating the localized vibration of detuned discs by steam turbines to solve the research problem of the phenomenon of localized vibrations caused by the detuning of simulated discs such as steam turbines in thermal power plants

Method used

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  • Experimental device of steam turbine to simulate localized vibration of detuning turbine disc
  • Experimental device of steam turbine to simulate localized vibration of detuning turbine disc
  • Experimental device of steam turbine to simulate localized vibration of detuning turbine disc

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the embodiments shown in the accompanying drawings.

[0013] The labels in the figure are: 1. Roulette 2. Vibrator 3. Power amplifier 4. Signal generator 5. Oscilloscope 6. Horizontal platform

[0014] Its structure and composition are: roulette, exciter, power amplifier, signal generator, oscilloscope and horizontal platform base. It is characterized in that the signal generator (4) transmits signals of different frequencies and on the one hand, the signal is amplified by the power amplifier (3). It is sent to the vibrator (2) located on the horizontal platform (6), and on the other hand, the waveform is observed through an oscilloscope. In the case of detuning, the wheel disc (1) located on the horizontal platform (6) produces localized vibration, and the localized vibration phenomenon is represented by the sand pattern produced by the fine sand on the wheel disc (1) . Magnets of different m...

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Abstract

The invention discloses an experimental device of a steam turbine to simulate localized vibration of a detuning turbine disc, and relates to the experimental device of the localized vibration of the detuning turbine disc. The experimental device is composed of a turbine disc, a vibration exciter, a power amplifier, a signal generator, an oscilloscope and a level table seat. The signal in differentfrequency generated by the signal generator, on one hand, is amplified by the power amplifier, and transmitted to the vibration exciter positioned on the level table seat; and on the other hand, waveshape is observed by the oscilloscope. Under the detuning condition, the localized vibration is generated by the turbine disc positioned on the level table seat, and the localized vibration situationis shown through the sand shape of silver sand paved on the turbine disc. Magnets in different masses are additionally placed on the turbine disc; and under the condition that a magnified ratio is not changed, the frequency and sand shape of the localized vibration generated in a detuning turbine disc status are acquired through the adjustment of the frequency of the signal generator.

Description

technical field [0001] The invention relates to an experimental device for detuning and localized vibration of a wheel disk, in particular to an experimental device for simulating the localized vibration of a detuned wheel disk for a steam turbine. Background technique [0002] Thermal power generation is the main force for the development of electric power in modern society. Under the background of building a harmonious society and developing a circular economy, we must focus on the impact of power on the environment and non-renewable energy in the direction of improving thermal power technology. Although there are some nuclear power units in China, thermal power still occupies most of the electricity market. In recent years, the development of electric power has lagged behind economic development, and many thermal power plants have been built across the country. However, thermal power technology must be continuously improved and developed in order to meet the requirements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
CPCG01M7/022
Inventor 潘宏刚赵英凯陈尚年
Owner SHENYANG INST OF ENG
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