Method and device for weak fault diagnosis of fracturing equipment based on infrared thermal image

Abstract

The embodiment of the invention provides a fracturing equipment tiny fault diagnosis method and device based on a thermal infrared image. The method comprises the following steps of acquiring a firstthermal infrared image; determining a corresponding representation relation of an equipment fault and the temperature change according to the first thermal infrared image; establishing a convolutionalneural network model according to the corresponding representation relation between the equipment fault and the temperature change; and diagnosing the type of the equipment fault according to the convolutional neural network model. The embodiment of the fracturing equipment tiny fault diagnosis method and device provides an equipment fault diagnosis technology system based on the thermal infraredimage, a convolutional neural network (CNN) is introduced as a special deep neural network, model selection and parameter optimization are carried out, and features of tiny faults in the thermal infrared image of fracturing equipment are extracted through strong image processing and learning capabilities and are classified, so that the function of fault diagnosis of the shale gas fracturing equipment is realized.

Description

technical field [0001] The embodiments of this specification relate to the technical field of equipment fault diagnosis, and in particular to a method and device for diagnosing weak faults of fracturing equipment based on infrared thermal images. Background technique [0002] The exploitation of oil and gas depends on effective fracturing operations, and as one of the most critical equipment in the fracturing construction process, the fracturing pump needs to convert the fracturing fluid with a certain viscosity into a high-pressure liquid to be discharged, which is used to squeeze oil and gas layers and The medium that supports the fracture. During the construction process, the fracturing pump needs to withstand high pressure and cyclic load, which increases the risk of failure and seriously affects the service life of the fracturing pump. [0003] The current fault diagnosis methods for shale gas fracturing equipment with the fracturing pump as the core mainly include vib...

AI Technical Summary

Problems solved by technology

Due to the cooling effect brought by the liquid flow and the thickness of the external casing in these three parts, the temperature change and range on the infrared thermal image are not obvious. The thermal image has little difference in color hierarchy, and it is difficult to obtain a better intuitive display by simply adjusting the contrast and brightness

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