Online state monitoring system and method of bolts of wind turbine generator unit

A technology of wind turbines and condition monitoring systems, applied in the monitoring of wind turbines, wind turbines, engines, etc., can solve problems such as trend analysis, inability to predict bolt life, and inability to meet practical applications, so as to protect the safety of operation and ensure normal operation running effect

Active Publication Date: 2018-10-26
CRRC WIND POWER(SHANDONG) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can only monitor the relative displacement between the bolt and the nut, and cannot monitor the situation where the bolt yields and becomes longer but there is no relative displacement between the bolt and the nut; in addition, this method cannot monitor the value of the axial stress of the bolt , it is also impossible to draw, compare and analyze the historical data of the axial stress of the bolts, and it is impossible to predict the life of the bolts
[0006] In summary, although the existing technology has made some contributions to the on-line monitoring of bolts, there are still many deficiencies, which cannot meet the needs of practical applications.

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  • Online state monitoring system and method of bolts of wind turbine generator unit
  • Online state monitoring system and method of bolts of wind turbine generator unit
  • Online state monitoring system and method of bolts of wind turbine generator unit

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0044] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses an online state monitoring system and method of bolts of a wind turbine generator unit. The system comprises a stress gasket sensor, a sensor data acquisition system, a data processing system and a wind power plant central monitoring system. The stress gasket sensor is arranged between a nut and a flange. The sensor data acquisition system centrally receives sensor monitoring data of each monitoring point of a single wind turbine generator i. The data processing system is used for analyzing signals acquired by the stress gasket sensor of each part of the wind turbine generator into axial stress of the bolt, and converting time domain signals of axial stress of the bolt into frequency domain signals. The wind power plant central monitoring system is used for receiving the stress data of the single wind turbine generator so as to form history data, carrying out drawing and comparison, recording transient-state data of abnormal bolts and giving out warnings.

Description

technical field [0001] The invention relates to an online state monitoring system and method for bolts of a wind power generating set. Background technique [0002] With the intensification of global climate problems, the application of new energy technologies has been vigorously developed and promoted. Among these new energy sources, wind power technology has developed rapidly. The development of offshore wind power has also received great support from local governments and energy companies in recent years. Support, develop rapidly. [0003] At present, the connection of various components of wind turbines is generally connected by high-strength bolts, such as the connection between the blade and the hub, the connection between the hub and the main shaft, the connection between the tower shell, etc., in the entire life cycle of the wind turbine for 20 years -In the past 30 years, local bolt fractures caused by alternating loads caused by variable winds and uncertainties ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00F03D17/00
CPCF03D17/00G01M13/00
Inventor 田家彬吕超徐苾璇白儒李钢强
Owner CRRC WIND POWER(SHANDONG) CO LTD
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