Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Diaphragm pump fault diagnosis method and device based on fractal theory

A technology of fault diagnosis and fractal theory, applied in pump testing, liquid variable capacity machinery, machines/engines, etc., can solve problems such as difficulty in obtaining information, reduce downtime, realize real-time condition monitoring, and ensure equipment operation. Effect

Active Publication Date: 2015-08-26
KUNMING UNIV OF SCI & TECH
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, different faults of diaphragm pumps usually originate from different dynamic mechanisms. It is sometimes difficult to obtain information in this area by the commonly used frequency spectrum analysis method, and the fractal dimension can quantitatively give the number of independent variables required to describe the dynamical system. This allows it to be fault-diagnosed by its fractal dimension

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Diaphragm pump fault diagnosis method and device based on fractal theory
  • Diaphragm pump fault diagnosis method and device based on fractal theory
  • Diaphragm pump fault diagnosis method and device based on fractal theory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1: Such as Figure 1-4 As shown, a diaphragm pump fault diagnosis method and device based on fractal theory, the specific steps of the method are as follows:

[0043] Step1. Collect the vibration signal of the diaphragm pump through the signal acquisition module; at the same time, import each fault fractal characteristic value obtained from historical training into the fault recognition module as the fault matching characteristic value for fault recognition;

[0044] Step2: Amplify, filter, denoise and A / D conversion of the collected vibration signal through the pre-processing module circuit to realize signal noise reduction processing;

[0045] Step3. Extract the fractal fault feature quantity of the vibration signal after noise reduction, including the extraction of its correlation dimension feature quantity and box dimension feature quantity;

[0046] Step4: Perform fault matching and identification of the obtained correlation dimension feature quantity and box dimen...

Embodiment 2

[0058] Example 2: Such as Figure 1-4 As shown, a diaphragm pump fault diagnosis method and device based on fractal theory, the specific steps of the method are as follows:

[0059] Step1. Collect the vibration signal of the diaphragm pump through the signal acquisition module; at the same time, import each fault fractal characteristic value obtained from historical training into the fault recognition module as the fault matching characteristic value for fault recognition;

[0060] Step2: Amplify, filter, denoise and A / D conversion of the collected vibration signal through the pre-processing module circuit to realize signal noise reduction processing;

[0061] Step3. Extract the fractal fault feature quantity of the vibration signal after noise reduction, including the extraction of its correlation dimension feature quantity and box dimension feature quantity;

[0062] Step4: Perform fault matching and identification of the obtained correlation dimension feature quantity and box dimen...

Embodiment 3

[0075] Example 3: Such as Figure 1-4 As shown, a method and device for fault diagnosis of diaphragm pump based on fractal theory, the specific steps of the method for fault diagnosis of diaphragm pump based on fractal theory are as follows:

[0076] Step1. Collect the vibration signal of the diaphragm pump through the signal acquisition module; at the same time, import each fault fractal feature value obtained from historical training into the fault recognition module as the fault matching feature value for fault recognition; the fractal feature value of each state of the diaphragm pump obtained from historical training As shown in Table 1:

[0077] Table 1 Fractal characteristics obtained by historical training in each state of the diaphragm pump

[0078] Operating status

normal status

Diaphragm breakdown

Diaphragm pump check valve card valve

One-way valve abrasion leakage

Correlation dimension feature

4.2109

3.7165

3.1024

3.0734

Box dimension feature

1.7934

1.6472 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a diaphragm pump fault diagnosis method and device based on a fractal theory and belongs to the technical field of machine fault diagnosis. The diaphragm pump fault diagnosis device comprises a signal collecting module used for detecting vibrating signals of a diaphragm pump through an acceleration sensor, a signal preprocessing module used for preprocessing the collected vibrating signals of the diaphragm pump, a feature extracting module used for extracting fractal fault features from the denoised vibrating signals, a state recognition module used for conducting fault matching and recognizing on the extracted fractal fault features and all initially-imported fault fractal feature quantity obtained through historical training, a fault diagnosis and alarm module used for reminding device maintenance personnel to correspondingly process the device. According to the diaphragm pump fault diagnosis method and device, the running state of the device can be rapidly and visually reflected, the reliable running information of the device can be provided for the device maintenance personnel in time, running of the device is effectively ensured, and therefore the downtime, the planned maintenance time and the unplanned maintenance time of the device are shortened.

Description

Technical field [0001] The invention relates to a fault diagnosis method and device of a diaphragm pump based on fractal theory, belonging to the technical field of mechanical fault diagnosis. Background technique [0002] Pipeline transportation is the fifth largest transportation method after railway transportation, road transportation, land and sea transportation, and air transportation. Pipeline transportation not only has zero pollution and low energy consumption, but also has almost no damage to the ecological environment. For some inconvenient road transportation, materials that are easy to spill or leak, it also reflects the advantages of pipeline transportation. Therefore, in recent years, the pipeline transportation industry has developed extremely rapidly, but how to ensure the safety and stability of pipeline transportation is an urgent problem to be solved. [0003] Diaphragm pump is one of the core equipment of pipeline transportation, it is the power output device o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F04B51/00
Inventor 吴建德张忠云王晓东马军范玉刚黄国勇邹金慧邵宗凯
Owner KUNMING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com