Skip to main content
Log in

Random Errors in Measuring Radial Clearances in Turbomachines and Technique for Decreasing Them

  • Published:
Optoelectronics, Instrumentation and Data Processing Aims and scope

Abstract

A simple-to-implement technique for measuring radial clearances with controlled precision due to decreasing random components of errors is considered. The quantitative estimates of precision, performance, and efficiency of the proposed technique are provided. This technique is stochastic, is based on characteristics of random errors and on periodicity of blade wheel rotation, and allows obtaining the measurement results with uniform precision in the entire range of rotation speeds of the turbomachine rotor. The considered technique makes it possible to avoid procedures for approximating numerical readouts.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

REFERENCES

  1. Measurement Methods and Tools for Multidimensional Motions of Structural Elements of Power Units, Ed. by Yu. N. Sekisov and O. P. Skobelev (Samarskii Nauchnyi Tsentr RAN, Samara, 2001).

    Google Scholar 

  2. Cluster Methods and Measurement Tools for Stator Strains and Displacement Coordinates of Blade Faces in Gas-Turbine Engines, Ed. by O. P. Skobelev (Mashinostroenie, Moscow, 2011).

    Google Scholar 

  3. S. Yu. Borovik and Yu. N. Sekisov, ‘‘Measurement and monitoring tools for radial clearance in flow range of a gas-turbine drive during operation of gas-turbine unit,’’ Gas Turbine Technologies 71 (10), 24–28 (2008).

    Google Scholar 

  4. S. Yu. Borovik, P. E. Podlipnov, Yu. N. Sekisov, and O. P. Skobelev, ‘‘Influence of disturbing factors in a system for measuring radial clearances in gas-turbine engines with temperature self-compensation,’’ Optoelectron., Instrum. Data Process. 55, 388–398 (2019). https://doi.org/10.3103/S8756699019040101

    Article  ADS  Google Scholar 

  5. S. Yu. Borovik, M. M. Kuteinikova, B. K. Raikov, Yu. N. Sekisov, and O. P. Skobelev, ‘‘Measuring of radial clearances between turbine stator and tips of blades with irregular shape by the instrumentality of single-coil eddy-current sensors,’’ Mechatronics, Autom., Control 14 (10), 38–46 (2013).

    Google Scholar 

  6. S. Yu. Borovik and Yu. N. Sekisov, ‘‘Single-coil eddy-current transducers for measuring mechanical parameters,’’ Vestn. Samara State Aerosp. Univ. 42 (4), 94–102 (2013).

    Google Scholar 

  7. V. N. Belopukhov, S. Yu. Borovik, and P. E. Podlipnov, ‘‘Sampling errors estimation in the determination of codes of extreme values in systems for measurements of radial clearances in compressors of turbomachines,’’ Vestn. Samara State Tech. Univ., Ser. Tech. 57 (1), 47–54 (2018).

    Google Scholar 

  8. V. N. Belopukhov, S. Yu. Borovik, P. E. Podlipnov, and Yu. N. Sekisov, RF Patent No. 2651628, Byull., No. 12 (2018).

  9. J. S. Bendat and A. G. Pearsol, Technical Random Data: Analysis and Measurement Procedures (Wiley-Interscience, New York, 1971).

    Google Scholar 

  10. V. M. Efimov, Time Quantization in Measurement and Control (Energiya, Moscow, 1969).

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to V. N. Belopukhov.

Additional information

Translated by E. Oborin

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Belopukhov, V.N. Random Errors in Measuring Radial Clearances in Turbomachines and Technique for Decreasing Them. Optoelectron.Instrument.Proc. 56, 665–670 (2020). https://doi.org/10.3103/S8756699020060047

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.3103/S8756699020060047

Keywords:

Navigation