Reciprocating compressor fault diagnosis method based on dimensionless indexes

Abstract

The invention relates to a fault diagnosis method for a reciprocating compressor, and is a fault diagnosis method for a reciprocating compressor, which is based on dimensionless indexes. The method comprises the steps as follows: taking a reciprocating compressor on-line monitoring system as a basis, extracting common fault features of a unit, building a common fault feature comparison table of the reciprocating compressor, and building mathematical models about fault deterioration degree dimensionless index and parking dimensionless index. The method is combined with the on-line monitoring system, and software based on the dimensionless index fault diagnosis method is developed, so as to meet the history and real-time dimensionless index changes for analysis. The actual survey shows that the method can practically and effectively improve the diagnosis accuracy and reliability. The method not only can be used for the actual reciprocating compressor fault diagnosis and improve the filed unit fault diagnosis level, but also can be used for developing a reciprocating compressor fault diagnosis fault diagnosis and a unit protection system, and is highly significant to safe, reliable and stable running of the reciprocating compressor.

Description

technical field [0001] The invention relates to a fault analysis and diagnosis method for a reciprocating compressor, which is a fault monitoring and diagnosis method for a reciprocating compressor using a dimensionless index. Background technique [0002] Reciprocating compressors are key units in process industry enterprises, especially in oil refining, chemical industry, and gas pipeline industries. Due to the complex structure, many vibration excitation sources, strong fault correlation, low unit fault diagnosis accuracy, and frequent major safety accidents, how to improve the accuracy of reciprocating compressor fault diagnosis has always been a difficulty for enterprise equipment managers. research hotspots. At present, more and more reciprocating compressors are equipped with on-line monitoring systems, but traditional diagnostic methods relying on vibration, temperature, and displacement trends cannot perform fault diagnosis intuitively and effectively. Especially ...

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Problems solved by technology

[0005] The invention relates to a fault diagnosis method of a reciprocating compressor, which is a fault monitoring and diagnosis method of a reciprocating compressor based on a dimensionless index. The original diagnostic method has low accuracy and weak diagnostic pertinence, which meets the general requirements of the engineering front-line equipment maintenance and management personnel, and significantly improves the practicability of the online monitoring system

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