Estimation of residual life-time of pumping units of electric power stations

Kelin, Andrii; Larin, Oleksiy; Naryzhna, Raisa; Trubayev, Oleksandr; Vodka, Oleksii; Shapovalova, Mariya

doi:10.1109/stc-csit.2019.8929748

Cited by 8 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Estimates of the residual life and its extension for pumping units are given in [3]. Three-dimensional modeling and the finite element method are used.…”

Section: Analysis Of Literature Data and Statement Of The Problemmentioning

confidence: 99%

Structuring of the Main Directions of Research Regarding the Determination of the Remaining Resource of Transport Structures and Buildings

ШАРКО,

ЯНЕНКО

2024

Automash

View full text Add to dashboard Cite

An analysis of the current state of developments regarding the determination of the residual resource of transport structures and facilities, which are operated in the conditions of long-term practice, uncertainty and risk in the adoption of final conclusions, is given. It has been established that the strategy for the development of technical diagnostics requires the exclusion of dependence on the human factor and subjective observation of changes in the physical, mechanical and operational properties of controlled objects for intellectual operations of determining the remaining resource associated with the collection, processing and analysis of diagnostic information. Analysis of the use of methods of non-destructive testing and flaw detection to assess the residual resource of transport structures and ratios showed the limitations of these methods of determining defects in the early stages of their development, which precede the state of degradation of the material, optimization of processes and technologies to ensure timely diagnosis and forecasting of the technical condition of structures. The current state of developments regarding the determination of the residual resource of transport structures and structures operated under conditions of complex dynamic loads is considered. The structuring of the main directions of research was carried out and the gradation of the main used methods of residual resource assessment was proposed based on the results of numerical methods of fracture mechanics, based on the results of non-destructive testing and defectoscopy, using normative documents and standards of modeling and information support. The essence, methodology of dignity and shortcomings of the used methods are highlighted. Purpose, scope of application, prospects of their further use in transport technologies are determined. Keywords: diagnosis, calculation methods, mechanical properties, technical diagnosis, assessment methods.

show abstract

“…Estimates of the residual life and its extension for pumping units are given in [3]. Three-dimensional modeling and the finite element method are used.…”

Section: Analysis Of Literature Data and Statement Of The Problemmentioning

confidence: 99%

Structuring of the Main Directions of Research Regarding the Determination of the Remaining Resource of Transport Structures and Buildings

ШАРКО,

ЯНЕНКО

2024

Automash

View full text Add to dashboard Cite

show abstract

“…The estimation of a residual lifetime of centrifugal pumps is conducted in [ 82 ] by FEM simulation taking into account the tightening of bolted connections, technological and temperature loads with a corresponding thinning of the housing walls. In [ 83 ], a tightened bolt is modelled as a plane beam having two linear end springs (transverse and rotational).…”

Section: Introductionmentioning

confidence: 99%

Vibration-Based Diagnostics of Radial Clearances and Bolts Loosening in the Bearing Supports of the Heavy-Duty Gearboxes

Krot

Korennoi

Zimroz

2020

Sensors

View full text Add to dashboard Cite

The problem solved in this research is the diagnosis of the radial clearances in bearing supports and the loosening of fastening bolts due to their plastic elongation (creep) or weak tightening using vibration signals. This is an important issue for the maintenance of the heavy-duty gearboxes of powerful mining machines and rolling mills working in non-stationary regimes. Based on a comprehensive overview of bolted joint diagnostic methods, a solution to this problem based on a developed nonlinear dynamical model of bearing supports is proposed. Diagnostic rules are developed by comparing the changes of natural frequency and its harmonics, the amplitudes and phases of shaft transient oscillations. Then, the vibration signals are measured on real gearboxes while the torque is increasing in the transmission during several series of industrial trials under changing bearings and bolts conditions. In parallel, dynamical torque is measured and its interrelation with vibration is determined. It is concluded that the radial clearances are the most influencing factors among the failure parameters in heavy-duty gearboxes of industrial machines working under impulsive and step-like loading. The developed diagnostics algorithm allows condition monitoring of bearings and fastening bolts, allowing one to undertake timely maintenance actions to prevent failures.

show abstract

Numerical Estimation of the Residual Life-Time of the Elements of the Centrifugal Pump of the Energy Station Due to Corrosion Wear

Larin

Potopalska

Grinchenko

et al. 2021

Lecture Notes in Networks and Systems

View full text Add to dashboard Cite

Estimation of residual life-time of pumping units of electric power stations

Cited by 8 publications

References 11 publications

Structuring of the Main Directions of Research Regarding the Determination of the Remaining Resource of Transport Structures and Buildings

Structuring of the Main Directions of Research Regarding the Determination of the Remaining Resource of Transport Structures and Buildings

Vibration-Based Diagnostics of Radial Clearances and Bolts Loosening in the Bearing Supports of the Heavy-Duty Gearboxes

Numerical Estimation of the Residual Life-Time of the Elements of the Centrifugal Pump of the Energy Station Due to Corrosion Wear

Contact Info

Product

Resources

About