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Method and device for diagnosing misalignment fault of coupler of steam turbine generator unit

A technology for steam turbine generator set and fault diagnosis, which is applied in the testing of machine/structural components, measuring devices, and testing of mechanical components, etc. It can solve problems such as failure analysis, diagnosis and treatment of unaligned couplings, and achieve rapid Finding and processing, improving accuracy and comprehensiveness

Pending Publication Date: 2021-11-19
INNER MONGOLIA POWER GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem solved by the embodiment of the present invention is that it is impossible to quickly, accurately and comprehensively analyze, diagnose and deal with misalignment faults of the coupling

Method used

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  • Method and device for diagnosing misalignment fault of coupler of steam turbine generator unit
  • Method and device for diagnosing misalignment fault of coupler of steam turbine generator unit
  • Method and device for diagnosing misalignment fault of coupler of steam turbine generator unit

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Embodiment 1

[0108] The present invention provides a method for diagnosing the misalignment fault of the shaft coupling of the turbogenerator set (a method for diagnosing the misalignment fault of the shaft coupling of the turbogenerator set), such as image 3 shown, including the following steps:

[0109] Step 1. Acquisition of coupling misalignment fault knowledge. Based on failure data such as failure mechanism and actual cases, the causes, symptoms and detection methods of coupling misalignment failures are obtained through analysis;

[0110] In the process of coupling misalignment fault knowledge analysis, the top event is misalignment of coupling, and the cause of the fault is obtained by layer-by-layer analysis in the form of tree diagram.

[0111] Symptoms of misalignment of the coupling include: ① Abnormal 1X amplitude of vibration; ② Abnormal 2X amplitude of vibration; ③ Unstable vibration trend over time; A support bearing metal temperature rise;

[0112] Step 2. Modeling of ...

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Abstract

The embodiment of the invention provides a method and device for diagnosing a misalignment fault of a coupling of a steam turbine generator unit. The method comprises the following steps: acquiring instance data of the misalignment fault of the coupling; analyzing the instance data to obtain the reason, the symptom and the detection method of the misalignment fault of the coupling; carrying out fault diagnosis knowledge modeling according to the reason, the symptom and the detection method of the coupling misalignment fault, and obtaining a fault diagnosis model; and diagnosing the misalignment fault symptom of the coupling in actual operation, and using the fault diagnosis model to diagnose whether the misalignment fault of the coupling occurs. According to the method, the semantic association between the coupling misalignment faults is established, the coupling misalignment fault diagnosis is performed, the accuracy and comprehensiveness of the diagnosis result are improved, and the coupling misalignment faults can be quickly found and processed.

Description

technical field [0001] The invention relates to the technical field of mechanical fault diagnosis, in particular to a method and a device for diagnosing a misalignment fault of a shaft coupling of a turbogenerator set. Background technique [0002] The steam turbine unit is the key equipment for electric power production. It is expensive, complex in structure, high in automation, and variable in operating conditions. It is inevitable that various failures will occur. Therefore, it is very important for the unit to accurately and quickly find out the cause of the failure and carry out effective treatment. An important guarantee for safe and efficient operation. Among them, misalignment of the coupling is a typical failure of the unit. [0003] The applicant found at least the following problems in the prior art: the analysis, diagnosis and treatment of misalignment faults of the shaft coupling cannot be performed quickly, accurately and comprehensively. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/022
CPCG01M13/022
Inventor 李晓波俎海东焦晓峰贾斌陈东超段学友魏超张锋锋
Owner INNER MONGOLIA POWER GRP
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