Device and method for automatically displaying vibration signal characteristics of turbo generator unit
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A steam turbine generator set, vibration signal technology, applied in the direction of engine testing, measuring devices, vibration testing, etc., can solve problems such as no function, lack of in-depth analysis ability of vibration signal, inability to understand the meaning of vibration signal analysis graphics, etc.
Inactive Publication Date: 2010-05-12
BEIJING YINGHUADA SOFTWARE ENG
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[0003] Since the analysis of vibration signals involves deep mechanical and mathematical theories and fault mechanisms, field personnel generally lack the ability to analyze vibration signals in depth, and cannot understand the meaning of vibration signal analysis graphics
After the TDM system was handed over to users, most of them did not play their due role
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Embodiment 1
[0013] Embodiment 1: be the embodiment of device of the present invention, refer to figure 1 As shown, it includes: a characteristic calculation module, and a typical vibration fault module connected with the characteristic calculation module, a fault symptom module, a signal analysis module and a display module.
[0014] Among them, the typical vibration fault module is used to classify typical vibration faults common to turbogenerators, including rotor mass imbalance, initial bending, thermal imbalance, misalignment, rotor friction, oil film oscillation, steam flow Common faults of turbogenerator sets such as excitation, falling off and loosening of components.
[0015] The fault symptom module is used to summarize all possible symptoms of typical vibration faults, and helps to judge various phenomena of faults, including some normal phenomena, because some faults can be eliminated by using normal phenomena, mainly time domain, frequency domain and trend analysis data.
[...
Embodiment 2
[0019] Embodiment 2: be the embodiment of the inventive method, refer to figure 2 shown, including the following main steps:
[0020] S1. Analyzing the vibration signal to obtain a corresponding analysis graph.
[0021] S2. Obtain the corresponding fault type and the symptom of the fault type according to the analysis graph, and calculate the reliability of the symptom and the reliability of the fault.
[0022] S3. Display the calculation result in the analysis graph.
[0023] More specifically, taking an unbalanced fault as an example, further details are as follows:
[0024] In the Typical Vibration Faults module, select Unbalance Faults. According to statistics, unbalance is the most common fault among the vibration faults of turbogenerator sets, accounting for more than 60%, especially during the start-up process after the new unit is put into operation and the unit is overhauled.
[0025] In the Signal Analysis module, select the Spectrum Analysis method. For variou...
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Abstract
The invention discloses a device and a method for automatically displaying vibration signal characteristics of a turbo generator unit, and relates to the field of machinery monitoring, which is used for helping a user understand a vibration signal analysis graphics. The device comprises a typical vibration fault module, a fault symptom module, a signal analysis module, a characteristic calculation module and a display module, wherein the signal analysis module is used for analyzing a vibration signal to acquire the corresponding analysis graphics; the characteristic calculation module is used for acquiring a corresponding fault type and a symptom of the fault type respectively from the typical vibration fault module and the fault symptom module according to the analysis graphics acquired by the signal analysis module, and calculating the credibility of the symptom and credibility of the fault; and the display module is used for displaying a calculation result of the characteristic calculation module in the analysis graphics. The method comprises the following steps of: analyzing the vibration signal to acquire the corresponding analysis graphics; acquiring the corresponding fault type and the symptom of the fault type according to the analysis graphics, and calculating the credibility of the symptom and the credibility of the fault; and displaying the calculation result in the analysis graphics.
Description
technical field [0001] The invention relates to the field of mechanical monitoring, in particular to a device and method for automatically displaying vibration signal characteristics of a steam turbine generator set. Background technique [0002] At present, the vibration monitoring fault diagnosis system or TDM (Transient Data Manager) system of steam turbine generator sets has been rapidly developed and widely used. Basically, large and medium-sized units are equipped with TDM systems, which play an important role in timely judging the status and fault nature of the units. effect. The TDM system has a general vibration signal analysis function, which can draw analysis graphics such as waveform, frequency spectrum, axis trajectory, Bode diagram, polar coordinate diagram, cascade diagram, waterfall diagram and trend analysis. [0003] Since the analysis of vibration signals involves deep mechanical and mathematical theories and fault mechanisms, field personnel generally la...
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