Real-time state assessment and life cycle management prediction system for hydraulic turbine runners

A life cycle, real-time state technology, applied in mechanical equipment, hydropower, machine learning and other directions, can solve complex and changeable, does not involve the safety assessment, simulation and online structural finite element simulation technology of the runner o-ring gap and other problems, to achieve the effect of reducing the maintenance workload and rationally arranging the maintenance cycle

Active Publication Date: 2021-06-18
DONGFANG ELECTRIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent scheme has the following disadvantages: 1) The runner life evaluation only considers the measured dynamic stress, and there are many actual influencing factors, such as the hydraulic design of the unit's full channel, the inherent characteristics of the runner, the runner material, manufacturing process and residual stress, etc. ; 2) The indicators that affect the running health of the runner include cavitation and abrasion. This patent does not involve or introduce relevant evaluation parameters, such as the water quality information of the unit flow and the content of mud and sand; 3) The clearance of the runner stop ring is not involved security assessment
[0006] In the actual operation of the hydraulic turbine unit, its working conditions are complex and changeable. Factors such as unit pressure pulsation, cavitation, mud and sand wear, runner manufacturing quality, unit installation quality, and unit shafting operating status affect the vibration, stress and fatigue of the runner. The service life and so on have a great impact, and the online fluid simulation and online structure finite element simulation technology of the runner is not yet feasible. At present, there is no related system that can comprehensively consider the above factors for real-time evaluation, life cycle management and prediction of the running state of the runner.

Method used

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  • Real-time state assessment and life cycle management prediction system for hydraulic turbine runners
  • Real-time state assessment and life cycle management prediction system for hydraulic turbine runners
  • Real-time state assessment and life cycle management prediction system for hydraulic turbine runners

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Embodiment 1

[0042] As a most basic embodiment of the present invention, such as figure 1 , discloses a real-time state assessment and life cycle management prediction system for a hydraulic turbine runner, including a data input terminal, a data processing unit, and a data output terminal; the data input terminal includes a real-time operation data input terminal of the unit and inherent characteristic information data of the runner input.

[0043] Among them, the real-time operation data input end of the unit is connected with a number of real-time data monitoring units for monitoring the operation data and hydrological environment data of the water turbine unit, that is, the real-time operation data input end of the unit is to transmit the collected important parameters to the system corresponding to the operating state and real-time data of environmental changes, and the data input end of the inherent characteristic information of the runner is used to input the mechanical state data o...

Embodiment 2

[0047]As a preferred implementation of the present invention, on the basis of the above-mentioned embodiment 1, further, specifically, the real-time operation data input end of the unit is connected with working condition data, status monitoring data and A real-time data monitoring module for the mud and sand content of the unit’s overflow water quality and the PH value of the unit’s overflow water quality; the working condition data includes water head, output, efficiency, and tail water level; the status monitoring data includes flow channel pressure, full flow Road pressure pulsation, unit vibration swing monitoring data, thrust and guide bearing bush temperature data. The silt content of the water quality of the electricity station is determined according to the monthly statistics for many years.

[0048] In a further step, the mechanical state data of the unit input by the inherent characteristic information data input end of the runner includes the mechanical data of the...

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Abstract

The invention belongs to the technical field of state monitoring of hydraulic turbine generator sets, and discloses a real-time health assessment and full life cycle management and prediction system for the running state of hydraulic turbine runners. , real-time operation data of the unit, unit flow water quality and sediment content and other comprehensive information to evaluate the running health status of the runner in real time, and digitally display the running status information of the runner, the running health of the runner, and the runner status on the display platform in real time. The real-time gap value of the anti-leakage ring, the degree of deterioration and fatigue life of the runner, the predicted maintenance cycle of the runner, the evaluation report of the runner operation, and the optimization suggestion for the operation and maintenance of the unit provide information for the safe, stable, economical operation, reasonable maintenance and failure of the hydropower unit. Diagnostics provide quantitative scientific decision support.

Description

technical field [0001] The patent of the invention belongs to the technical field of state monitoring and health assessment of hydroelectric generator sets, and specifically relates to a real-time state assessment and life cycle management prediction system for hydroturbine runners. Background technique [0002] The runner of the hydro-generator set is crucial to the safe, economical and stable operation of the entire unit. At present, many power stations have encountered problems such as runner wear and serious cavitation, runner blade cracks, and runner stop ring abrasion. Moreover, most hydroelectric units have been connected to the grid AGC, that is, automatic power generation control of the units. The input of AGC has caused major changes in the operation mode of hydroelectric units, that is, multiple units operate with partial load for a long time, frequent unit load adjustments, and large load fluctuations. Moreover, the adjustment speed is fast, the unit frequently c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B11/00G06F30/23G06F30/27G06F30/28G06F30/17G06N3/02G06N20/00G06F113/08G06F119/04G06F119/14
CPCF03B11/008G06N3/02G06N20/00Y02E10/20Y02P70/50
Inventor 张猛郭靖文树洁
Owner DONGFANG ELECTRIC MACHINERY
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