Fault early warning method and fault early warning device for speed-changing gear box

A fault warning, gearbox technology, applied in prediction, alarm, character and pattern recognition, etc., can solve problems such as user inconvenience

Pending Publication Date: 2022-03-11
华润电力技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, this maintenance method must be used when the gear box fails, and there is a serious time lag and passive response, which brings some inconvenience to the user

Method used

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  • Fault early warning method and fault early warning device for speed-changing gear box
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  • Fault early warning method and fault early warning device for speed-changing gear box

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Embodiment Construction

[0088] Embodiments of the present application provide a fault pre-warning method and a fault pre-warning device for a gear box, which are used for early warning of a gear box fault.

[0089] Gearboxes are widely used in the field of thermal power generation. However, the working conditions of the gear box are complex, and the process of bearings and gears from early abnormality to functional failure is a gradual deterioration process, and there is a serious time lag and passive response. The fault early warning method in the embodiment of the present application is now provided to solve the problem.

[0090] see figure 1 One embodiment of the fault warning method in the embodiment of the present application includes:

[0091] 101. Obtain sensor data;

[0092] Acquire sensor data from surveillance information systems, distributed control systems, rotating machinery monitoring and management systems, etc. The sensor data includes first working condition data and status data,...

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PUM

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Abstract

The embodiment of the invention discloses a fault early warning method for a gearbox. The fault early warning method comprises the steps of obtaining sensor data including first working condition data and state data; converting the state data to obtain frequency domain data; frequency band factors of a bearing, a shaft system and a meshing gear of the gearbox are calculated according to the frequency domain data; establishing a high-dimensional feature space through the first working condition data and the frequency band factor; after the high-dimensional feature space is classified through a clustering model, time slices of the time series data under all classifications are analyzed and predicted through a regression model to obtain a predicted value of the target measuring point; and when the difference value between the actual value and the predicted value is greater than an alarm threshold value, sending out an early warning signal.

Description

technical field [0001] The embodiments of the present application relate to the field of thermal power generation, and in particular to a fault pre-warning method and a fault pre-warning device for a gear box. Background technique [0002] Gearbox equipment is widely used in coal mill reducer, slurry circulation pump reducer and steam turbine barring device in thermal power industry. [0003] Due to the large fluctuations in the working load of the gear box and the frequent start and stop, the equipment failure rate is relatively high. The general practice in the industry is to return to the equipment manufacturer for maintenance when the vibration of the gear box exceeds the limit or the noise on site is abnormal, and replace the faulty gearbox with a spare gearbox to maintain the unit's work. [0004] However, this maintenance method must be used when the gear box breaks down, and there is a serious time lag and passive response, which brings certain inconvenience to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G08B21/18G06Q10/04G06Q50/06
CPCG08B21/182G08B21/187G06Q10/04G06Q50/06G06F18/23G06F18/24G06F18/10
Inventor 陈建华卫平宝聂怀志张含智马成龙陈世和陈木斌周严伟李晓静刘道明
Owner 华润电力技术研究院有限公司
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