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

Method and system for early warning and diagnosing water turbine runner blade crack breakdown

A runner blade, early warning technology, applied in the testing of mechanical components, testing of machine/structural components, instruments, etc.

Inactive Publication Date: 2013-12-11
CHN ENERGY DADU RIVER REPAIR & INSTALLATION CO LTD +1
View PDF7 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing hydroelectric unit vibration monitoring and analysis technology cannot provide early warning and diagnosis of hydroelectric unit failures, a method and system for early warning and diagnosis of hydraulic turbine runner blade crack failures are provided. The scheme provided by the invention can realize the status of hydroelectric units Evaluation and early warning diagnosis, and provide guidance for potential fault optimization operations of hydropower unit objects

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
  • Method and system for early warning and diagnosing water turbine runner blade crack breakdown
  • Method and system for early warning and diagnosing water turbine runner blade crack breakdown
  • Method and system for early warning and diagnosing water turbine runner blade crack breakdown

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0039] figure 1 Shown is a flow chart of an early warning and diagnosis method for crack failure of a water turbine runner blade provided by an embodiment of the present invention. The method includes the following steps:

[0040] S1: Data collection step. In this step, the historical fault data of each time point in a period of time when several hydroelectric units have cracked faults on the turbine runner blades is collected, and the corresponding historical fault data groups of each hydroelectric unit at several time points are obtained;

[0041] S2: Model calculation step. In this step, based on the historical fault data sets corresponding to several time points of each hydroelectric unit collected in the previous step, a data set of crack fault st...

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 provides a method for early warning and diagnosing a water turbine runner blade crack breakdown. The method comprises the step of collecting a historical breakdown data set produced when a hydroelectric generating set which has the water turbine runner blade crack breakdown operates, the step of generating a water turbine runner blade crack breakdown state data set according to the historical breakdown data set, the step of generating a water turbine runner blade crack breakdown state data model of the hydroelectric generating set according to the character distribution of parameters of all data groups in the water turbine runner blade crack breakdown state data set, and the step of monitoring the state of a water turbine of a hydroelectric generating set which has no crack breakdown according to the water turbine runner blade crack breakdown state data model of the hydroelectric generating set. When the state of water turbine runner blades is approximate to the water turbine runner blade crack breakdown state data model, an early warning about the water turbine runner blade crack breakdown is sent out. The method can give the early warning and carry out related diagnosis when the hydroelectric generating set breaks down at the early stage so as to prevent non-planned shut-down accidents of the hydroelectric generating set.

Description

technical field [0001] The invention belongs to the technical field of state detection of hydropower units, and in particular relates to an early warning and diagnosis method and system for crack faults of hydraulic turbine runner blades based on the operation data mining technology. Background technique [0002] Most of the domestic hydropower stations were built in the 1970s and 1980s. Due to the limitation of the manufacturing level at that time, the materials of the runner blades were 0Cr13Ni5MoRe and 15MnMoVCu, and the material of the upper and lower crowns was 20MoSi. Due to certain defects in 15MnMoVCu metal, cracks in the blades of turbine runners occur frequently, especially the cracks in runner blades made of 15MnMoVCu are the most serious, and most of them are penetrating cracks, and the crack situation is also complicated. The occurrence of cracks in the blades of the turbine runners seriously threatens the safe and economical operation of the hydropower plant. W...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 钱冰马越邹磊江涛
Owner CHN ENERGY DADU RIVER REPAIR & INSTALLATION CO LTD
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