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Vibration monitoring and failure diagnosis system of gas turbine

A fault diagnosis system and vibration monitoring technology, applied in vibration testing, testing of machine/structural components, measuring devices, etc., can solve the problems of not drawing the rotor axis, not introducing time-frequency analysis, etc.

Inactive Publication Date: 2007-09-19
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the Odyssey system does not draw the trajectory diagram of the rotor axis, which is also a big deficiency
The current monitoring and analysis system is similar to this, and the analysis is still based on the frequency spectrum of the signal, without introducing time-frequency analysis

Method used

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  • Vibration monitoring and failure diagnosis system of gas turbine

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Embodiment Construction

[0025] As shown in Figure 1, the description of each step in the program flow is as follows:

[0026] 1. Program start: A program start interface pops up here.

[0027] 2. User login: Here the user is prompted to enter the user name and password, and the main interface can only be entered after the program confirms.

[0028] 3. Enter the main interface: here the user can select the corresponding menu to operate according to the needs.

[0029] 4. Parameter settings: respectively described as follows,

[0030] 4.1 Sensitivity: The user enters the sensitivity of the sampled data and its unit here.

[0031] 4.2 Channel selection: The user enters the required number of data acquisition channels here.

[0032] 4.3 Sampling frequency: The user enters the frequency of collecting data here.

[0033] 4.4 Number of sampling points: The user enters the number of sampling points of sampling data here.

[0034] 5. Data collection: The program collects data according to the sampling pa...

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Abstract

The present invention relates to an oscillation monitoring and fault diagnosis system of a combustion turbine. The characteristics are: the oscillation signals of the combustion turbine generator group can be measured, and the oscillation and the corresponding analyzing results can be displayed in a dynamic mode, and the waveform, peak-peak value, frequency spectrum can also be displayed; the rotor axes trace and the time frequency analyzing including a small wave transforming, a short-time Fourier transforming, the corresponding functions and the tendency chart of each testing point can be displayed in a dynamic mode to the displacement signals; firstly, the familiar faults of the rotor system such as the unbalance, the colliding and friction and un-centring are judged, at the same time, alarming function is provided; the normal or un-normal of the moving of the shaft can be seen form the displayed dynamic trace and the short-time Fourier transforming of the combustion turbine at the starting and stop moment can displays the change of the rotating speed and the frequency doubling; the small wave analyzing method can decompose the main components of the signals to observe the main oscillation signals and high-frequency overlapped signals and some transilient signals of the running combustion turbine.

Description

technical field [0001] The invention relates to a gas turbine vibration monitoring and fault diagnosis system applied to the vibration measurement, display and analysis of a gas turbine generator set, which can measure the vibration signal of a gas turbine generator set, dynamically display its vibration situation, and various related analysis results . Background technique [0002] Although there are many commercial monitoring and analysis systems at present, their technical level is still dominated by traditional analysis methods. The analysis is based on the frequency spectrum of the signal, and the fault diagnosis is judged by comparing its fundamental frequency and multiplier. The well-known ENTEK rotating machinery monitoring and diagnosis system of Rockwell Automation in the United States includes two parts, namely DataPAC 1500 data collector and analysis software EMONITOR Odyssey. Among them, the role of the data collector is to obtain digital signals from the senso...

Claims

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Application Information

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IPC IPC(8): G01M7/02
Inventor 刘楼军邵雨娄兵郑鸿明薛为平
Owner PETROCHINA CO LTD
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