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On-line monitoring method for cracks of variable-pitch bearing

A pitch bearing and crack technology, applied in the field of non-destructive testing, can solve problems such as production accidents, inconvenient detection, and danger of pitch bearings, and achieve real-time monitoring, enhanced convenience, and real-time monitoring

Pending Publication Date: 2021-12-17
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

[0002] At present, for the detection of wind power variable pitch bearings, most of the staff climb up to the top of the tower for detection after the shutdown, which is inconvenient and very dangerous; Bearing failures lead to production accidents

Method used

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  • On-line monitoring method for cracks of variable-pitch bearing

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Embodiment Construction

[0020] The present invention is described in further detail below in conjunction with accompanying drawing:

[0021] refer to figure 1 , an online monitoring method for pitch bearing cracks in the present invention, firstly, the circular motion is converted into linear motion through module conversion, so that the circumference of the pitch bearing can be monitored by a displacement sensor. Secondly, use the wireless temperature displacement integrated sensor 3 to monitor the internal circumference of the inner ring 2 of the pitch bearing and the outer circumference of the outer ring 1 of the pitch bearing, change the ambient temperature, and receive data through the wireless receiving device to obtain different temperature Basic data for the inner circumference of the inner ring of the lower pitch bearing and the outer circumference of the outer ring. Then, the wireless temperature displacement integrated sensor is installed on the online pitch bearing, and the real-time mon...

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Abstract

The invention discloses an on-line monitoring method for cracks of a variable pitch bearing. The method comprises the following steps of firstly, measuring the internal perimeter of an inner lantern ring and the external perimeter of an outer lantern ring of the variable pitch bearing at different temperatures by using a wireless temperature and displacement integrated sensor as basic data, and then monitoring the temperature of the lantern rings by using the wireless temperature and displacement integrated sensor; and enabling the inner surface of the inner ring and the outer surface of the outer ring to be subjected to perimeter monitoring, transmitting data to a computer in a wireless mode, comparing the real-time perimeter at the same temperature with the perimeter in basic data, and when the change of the perimeter exceeds 5 mm, judging that the variable pitch bearing ring cracks.

Description

technical field [0001] The invention belongs to the field of nondestructive testing, and in particular relates to an online monitoring method for pitch bearing cracks. Background technique [0002] At present, for the detection of wind power pitch bearings, most of the staff climb up to the top of the tower for detection after the shutdown, which is inconvenient and very dangerous; Bearing failures lead to production accidents. Contents of the invention [0003] In order to realize the monitoring of the state of the pitch bearing and better ensure the safe production of electric power, the present invention proposes an online monitoring method for the crack of the pitch bearing. [0004] To achieve the above object, the present invention adopts the following technical solutions: [0005] A method for online monitoring of pitch bearing cracks, comprising the following steps: [0006] ① Through module conversion, the circular curved motion is converted into linear motion,...

Claims

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Application Information

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IPC IPC(8): G01M13/04G01B21/02G08C17/02
CPCG01M13/04G01B21/02G08C17/02
Inventor 赵仑蔡晖秦承鹏田树鹏金冠锋陈征王福贵李东江王强邱张维佳
Owner XIAN THERMAL POWER RES INST CO LTD
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