On-line monitoring and fault diagnosis system for fracturing pump

Abstract

The invention discloses an on-line monitoring and fault diagnosis system for a fracturing pump. The on-line monitoring and fault diagnosis system comprises a signal acquisition module, a signal processing module and a data module, wherein the signal acquisition module is responsible for receiving, processing and storing signals of each sensor and packaging and sending the data; the signal processing module comprises a fault prediction and concurrency control module, a threshold and window function setting module, and a vibration signal feature extraction and identification module, a universalsignal processing module, a rule-based prediction algorithm module and a data sharing buffer module which are respectively in data crosslinking with the fault prediction and concurrency control module and the threshold and window function setting module; the data module is used for providing reference data and technical support data; and the data is analyzed and processed by the signal processingmodule to obtain the working state of main components of the pump. Therefore, the on-line monitoring and fault diagnosis system for the fracturing pump realizes integration of state monitoring, diagnosis, prediction, treatment and management of the fracturing pump, and reduces the operation and maintenance cost of the fracturing pump. The invention further discloses an on-line monitoring and diagnosis method for the fracturing pump based on the system.

Description

technical field [0001] The invention relates to the field of equipment operation and maintenance, in particular to an online monitoring and fault diagnosis system for a fracturing pump. Background technique [0002] The fracturing pump is an important measure equipment for oil field water injection, fracturing, acidizing, etc. to improve the production and recovery of oil layers, and is widely used in various oil and gas fields. In the hydraulic fracturing operation, the pressure of the fracturing fluid is used to open the formation and form several cracks, so as to achieve the purpose of increasing production and injection. The fracturing pump is the core equipment to achieve this purpose. For the working conditions of fracturing construction, the fracturing pump is required to have the characteristics of high pressure, large displacement, strong corrosion resistance and wear resistance, which makes the parts of the fracturing pump easy to wear and need to be replaced frequ...

AI Technical Summary

Problems solved by technology

The working state monitoring of valves has always been a problem in the industry. The industry usually uses the pressure difference between the inlet and outlet for monitoring. However, due to the very high pressure, the cost of a large-range and high-precision pressure sensor is very high, and this method cannot locate the working status of each valve. In addition, the internal structure of the fracturing pump is complex. If a component fails, it is difficult to locate it on site. Generally, it needs to be returned to the factory for repair, resulting in a decrease in the use efficiency of the equipment and greatly increasing the operating cost.

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