Identyfikatory
Warianty tytułu
Języki publikacji
Abstrakty
In the paper, the flow-through phenomena in the air gauge are under discussion form the thermodynamic and gasodynamic perspective. The main elements of the cascade are considered the inlet nozzle (restriction), measuring chamber and the measuring nozzle with the measuring slot (displacement between the nozzle head and measured surface). The purpose of the analysis was to point out the impact on the metrological characteristics of the air gauge. In particular, attention was paid to the airflow through the measuring slot. Here, the complex phenomena take place, among others the supersonic areas and a “bubble ring,” which cause discontinuity and hysteresis in the static characteristic. On the other hand, the air stream expansion after the restriction (inlet nozzle) is observed in the measuring chamber. The point of the above discussion was to work out some recommendation on the nozzles geometry and the localization of the back-pressure measuring point in the chamber.
Czasopismo
Rocznik
Tom
Strony
38--46
Opis fizyczny
Bibliogr. 25 poz., rys., wykr.
Twórcy
autor
- *Division of Metrology and Measurement Systems, Faculty of Mechanical Engineering and Menagement, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland
Bibliografia
- 1. Bokov V.B. (2011), Pneumatic gauge steady-statemodelling by theoretical and empirical methods, Measurement, 44,303-311.
- 2. Breitinger R. (1971), New Pneumatic Measuring Gauges, Fertigungtechnik,61, 225–227, (in German)
- 3. Crnojevic C, Roy G, Bettahar A, Florent P. (1997), The Influence of the Regulator Diameter and Injection Nozzle Geometry on the Flow Structure in Pneumatic Dimensional Control Systems, Journal of Fluids Engineering, 119, 609–615.
- 4. Dejč M.E. (1961), Technical, Gosènergoizdat, Moskva–Leningrad, (in Russian)
- 5. Idel’čik I.E. (1960), Hydraulic Resistances Directory, Gosènergoizdat, Moskva, (in Russian)
- 6. Jermak Cz.J, Rucki M. (2016) Dynamics of the non-contac troundness measurement with air gages, Acta Mechanica et Automatica, 10(3),227-232.
- 7. Jermak Cz.J. (2010), Methods of Shaping the Metrological Characteristics of Air Gages, Journal of Mechanical Engineering, 56(6), 385- 390.
- 8. Jermak Cz.J. (2012), Theoretical and Practical Aspects of Shaping of Static Metrological Properties of Length Air Gauges Wyd. Politechniki Poznańskiej, Seria Rozprawy, nr 476, (in Polish)
- 9. Jermak Cz.J., Rucki M. (2012),Air Gauging: Static and Dynamic Characteristics, IFSA, Barcelona.
- 10. Kazimierski Z., Krysiński J. (1981), Gas Bearing Arrangement and Microturbine Drives, WNT, Warszawa, (in Polish)
- 11. Lammel L., Osiadacz A. (1974), Pneumatic Signals in Automation, WNT, Warszawa, (in Polish)
- 12. Lotze W. (1971), Design of Pneumatic Air Gauges, Feingerätetechnik, 29(9), 389–394, (in German)
- 13. MinaevА.N. (1987), Mechanics of Liquid and Gas, Metallurgiâ, Moskva, (in Russian)
- 14. Oleśkiewicz-Popiel Cz. (1981), Axial-symmetric Free and Striking Stream, Wyd. Politechniki Poznańskiej, Poznań. (in Polish)
- 15. Project Report (2001), Design of Metodology of Improving of Properties of Pneumatic Lenght-measurement Gauges. Project Report KBN 1253/T07/00/18. (in Polish)
- 16. Prosnak W.J. (1971), Fluid Mechanics – Gas Dynamics, t. 2, PWN, Warszawa, (in Polish)
- 17. Rucki M. (2009), Reduction of Uncertainty in Air Gauge Adjustment Process, IEEE Transactions on Instrumentation and Measurement, 58(1), 52-57.
- 18. Schuetz G. (2015), Pushing the Limits of Air Gaging—And Keeping Them There, Quality Magazine, 54(7),22-26.
- 19. Tanner C.J. (1958), Air gauging – history and future developments, Institution of Production Engineers Journal, 37(7),448-462.
- 20. Theory of Pneumatic Sensors Integrated with Piezoceramical Pressure Transducer (1986-1990), Annual Research Report.CPBP 02.20, Nr III.02, Poznań–Warszawa. (in Polish)
- 21. Tesar V. (2008), Characterisation of subsonic axisymmetric nozzles, Chemical Engineering Research and Design, 86,1253–1262.
- 22. Tesar V. (2010), Characterisation of inexpensive, simplyshaped nozzles, Chemical Engineering Research and Design, 88, 1433-1444.
- 23. Vacharanukul K., Mekid S. (2005), In-Process Dimensional Inspection Sensors, Measurement, 38(3),204-218.
- 24. Zalmanzon L.А. (1961), Flowing Elements of Pneumatic Control Appliances, Izd. Akademii Nauk SSSR, Moskva. (in Russian)
- 25. Zelczak A. (2002), Pneumatic Length Measurements, WKŁ, Warszawa, (in Polish)
Uwagi
1. The investigations had been performed in frames of the projects CPBP 02.20 and KBN 1253/T07/00/18 financed by Polish Government.
2. Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-5527a18b-c126-4cf8-95ed-fc0fafd7a51b