Generally speaking, problems arising from working with elevated vibrations are usually detected at a later stage or…
Since vibration measurement is only one part of predictive maintenance and good periodic control, through our partners we are able…
Production processes in the plant often cannot take place due to improper operation of rotary machines.Rotor imbalance…
Vibration measurement and analysis
Generally speaking, problems arising from working with elevated vibrations are usually detected at a later stage or misinterpreted. Often used protective systems (monitoring systems) cannot accurately interpret the measured signal and therefore do not provide the system protection as they should.
Lack of accurate information and/or their misinterpretation can cause many problems in the operation of some machine but also in the entire production process, which can lead to high costs. We offer our customers predictive machine maintenance services, which means that we measure vibrations and analyze the results in order to obtain the actual condition of the observed machine and its trend.
In this way, instead of statistical estimates of the life service or frequency of failures, we can get a complete picture of the current situation as well as the possibility of planning an overhaul.
The planned maintenance activity is based on actual needs, thus eliminating unnecessary repairs, preventing sudden shutdowns and failures to get a reliable and profitable facility. By interpreting the measurement results we are able to detect problems such as: rotor imbalance, shaft eccentricity, misalignment, bearing condition, joint failure, resonances.
Periodic and continuous monitoring of machines
Since vibration measurement is only one part of predictive maintenance and good periodic control, through our partners we are able to procure and install equipment (measuring chains with physical quantity transducers) for constant monitoring of machines. The purpose of monitoring the operation of machines is to identify changes or irregularities while they running so we can determine and make diagnoses of the type of failure or damage.
Measurement of physical quantities (stress, vibration, power, noise, temperature, etc.), and their storage and analysis is carried out continuously, in an automated manner without the need for human intervention. For your needs, we can select and provide diagnostic systems for continuous measurement and analysis from top manufacturers. Modern monitoring systems use dynamic state, vibration intensity and process parameters, as the basis of work and depending on the need could be extended with other subsystems in order to achieve fully automated and protective monitoring of machines. Also, these systems offer additional diagnostic options, so interventions for remediation can be planned in advance and not only based on a statistical estimation of failure frequency or service life.
This will ensure that the production process runs smoothly and avoids unnecessary repairs, plant shutdowns or failures. By interpreting the measurement results we are able to detect problems such as: rotor imbalance, eccentricity of the shaft, misalignments, bearing condition, joint failure, resonances, poor foundation, changes in structural stiffness (cracks).
Rotor balancing in own bearings
Production processes in the plant often cannot take place due to improper operation of rotary machines.Rotor imbalance (imbalance) is one of the common causes of increased vibration in rotating machines. Large centrifugal forces that occur as a result of unevenly distributed mass, load the entire structure of the machine, and cause bearing damage. Improper dynamic characteristics of the rotor and uneven mass, cause a constant and high vibrational amplitude at rotation frequency and amplitude increases exponentially with higher rotational speed.
Rotor imbalance can occur for several reasons: holes in the casting, geometric asymmetries, eccentricity or misalignement, corrosion, improper service and maintenance, thermal expansion …With the help of high level class portable equipment for measuring and analyzing vibration phenomena on site and without disassembly, we can measure total vibration amplitudes but also diagnose the cause of imbalance by spectral analysis. After balancing the rotor in own bearings, we reduce vibration amplitudes, ensure smoother operation of the machine, reduce shutdowns, as well as the total cost of repairing the problem.