Fault diagnosis method of hydraulic submerged pump system

A technology of fault diagnosis and hydraulic system, which is applied in the detection and alarm of common faults in hydraulic submersible pump systems, and in the field of fault diagnosis of hydraulic submersible pump systems. It can solve problems such as faults that cannot be detected by sensors and cost

CN104777831AActive Publication Date: 2015-07-15WUHAN MARINE MACHINERY PLANT
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-07-15

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Abstract

A fault diagnosis method of a hydraulic submerged pump system comprises three steps of data acquisition and storage, data processing and analysis as well as data diagnosis and alarming. According to the method, fault information in the system are accurately reflected with a multivariate data analysis method, coupling of multiple variates in the system are analyzed, and a new comprehensive index is formed and can comprehensively reflect faults of the original system. With the adoption of the method, fault types of a submerged pump can be accurately reflected, the reliability of the submerged pump system can be effectively improved, the usage range is wide, and manufacturing and operation costs are low.
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Description

technical field

[0001] The invention relates to a fault diagnosis method of a submersible pump, in particular to a fault diagnosis method of a hydraulic submersible pump system, and is particularly suitable for detection and alarm of common faults of the hydraulic submersible pump system. Background technique

[0002] Currently, FPSO platform or oil tanker submersible cargo handling system equipment is still blank in China. The power source of submersible pump is hydraulic drive. The importance of hydraulic drive system is self-evident. Therefore, the reliability and safety of the hydraulic system are system A key factor for safety and reliability. In order to ensure the reliability and safety of the submersible pump, it is of great significance to adopt the fault detection technology suitable for the working conditions of the submersible pump system.

[0003] Some important faults of the submersible pump system cannot be detected by sensors or the cost of detection by sens...

Examples

Embodiment 1

[0105] see figure 1 – Figure 8 , a method for fault diagnosis of a hydraulic submersible pump system, said fault diagnosis method comprising: three steps of data collection and storage, data processing and analysis, and data diagnosis and alarm:

[0106] The first step, data collection and storage: use the sensor on the submersible pump to collect the state parameters of the main pump motor operating current, hydraulic system pressure, submersible pump outlet pressure, submersible pump outlet flow, hydraulic system temperature and STC valve pressure, and then The above six state parameters are transmitted to the quantization device in real time for quantization processing, and finally the parameters after the quantization processing are respectively transmitted to the storage device and the diagnosis device, and the storage device stores the collected data for future use;

[0107] The second step, data processing and analysis: the diagnostic device establishes a sample of n ...