Mathematical modeling non-contact external compression pumps with different molecular weights gases
https://doi.org/10.25206/2588-0373-2024-8-3-46-52
EDN: GCGPGM
Abstract
A distinctive feature of Roots type vacuum pumps is the selective of pumping, which is due to the dependence of reverse flows on the type of gas. To study this phenomenon, a mathematical model of the work process is used, based on solving differential equations of a system with variable mass. Comparisons of the experimental and calculated values of pumping speed and pressure increase for helium, argon and air show a discrepancy of no more than 10 %. Calculations have shown that under viscous flow conditions, switching from pumping argon to helium reduces pumping speed by more than 10 % and pressure increase by 50 %.
About the Authors
A. A. Raykov
Kazan National Research Technological University
Russian Federation
Russian Federation
Raykov Alexey Alexandrovich, Candidate of Technical Sciences, Associate Professor of Vacuum Engineering Department
Kazan, Karl Marx st., 68, 420015
AuthorID (SCOPUS): 35810909900
A. A. Isaev
Kazan National Research Technological University
Russian Federation
Russian Federation
Isaev Alexandr Anatolievich, Graduate Student of Vacuum Engineering Department, KNRTU; Head of Mechanical Vacuum Pumps Sector, JSC «Vakuummash»
Kazan, Karl Marx st., 68, 420015
AuthorID (SCOPUS): 57220075456
A. V. Burmistrov
Kazan National Research Technological University
Russian Federation
Russian Federation
Burmistrov Alexey Vasilevich, Doctor of Technical Sciences, Professor, Professor of Vacuum Engineering Department
Kazan, Karl Marx st., 68, 420015
AuthorID (SCOPUS): 6603797728,
ResearcherID: A-4254-2014
References
1. Burmistrov A. V., Salikeev S. I., Bronshteyn M. D. Pryamyye i obratnyye potoki v beskontaktnykh vakuumnykh nasosakh [Forward and reverse flows in non-contact vacuum pumps]. Kazan, 2009. 232 p. (In Russ.).
2. Anufriyeva I. V., Vasilyev Yu. K., Kemenov V. N. [et al.]. Sovremennoye sostoyaniye rynka bezmaslyanykh forvakuumnykh sredstv otkachki [Current state of the market for oil-free forevacuum pumping equipment] // Vakuumnaya tekhnika i tekhnologiya. Vacuum Science and Technology. 2003. Vol. 13, no. 2. P. 93–99. (In Russ.).
3. Khablanyan M. Kh., Saksaganskiy G. L., Burmistrov A. V. Vakuumnaya tekhnika. Oborudovaniye, proyektirovaniye, tekhnologii, ekspluatatsiya. Ch. 1. Inzhenerno-fizicheskiye osnovy [Vacuum technology. Equipment, design, technology, operation. Part 1. Engineering and physical fundamentals]. Kazan, 2013. 237 p. (In Russ.).
4. Jousten K., Dirscherl J., Lachenmann R. [et al.]. Positive Displacement Pumps // Vacuum Technology. 2016. P. 259–360. DOI: 10.1002/9783527688265.ch7. (In Engl.).
5. Burmistrov A. V., Raykov A. A., Salikeev S. I., Kapustin E. N. Modelirovaniye rabochikh protsessov beskontaktnykh bezmaslyanykh vakuumnykh nasosov metodami vychislitel’noy gidrogazodinamiki (CFD) [Simulation of operating processes of non-contact oil-free vacuum pumps using computational fluid dynamics (CFD) methods] // Vakuumnaya tekhnika i tekhnologiya–2021. Vacuum Technique and Technology–2021. Saint Petersburg, 2021. P. 16–22. (In Russ.).
6. Wang J., Liu R., Yang S. [et al.]. Geometric study and simulation of an elliptical rotor profile for Roots vacuum pumps // Vacuum. 2018. Vol. 153. P. 168–175. DOI: 10.1016/j.vacuum.2018.04.014. (In Engl.).
7. Ibraeev A. M. Povysheniye effektivnosti raboty rotornykh nagnetateley vneshnego szhatiya na osnove analiza vliyaniya geometricheskikh parametrov na ikh kharakteristiki [Improving the operating efficiency of rotary external compression superchargers based on an analysis of the influence of geometric parameters on their characteristics]. Kazan, 1987. 208 p. (In Russ.).
8. Salikeev S. I., Burmistrov A. V., Raykov A. A. Edinyy podkhod k raschetu otkachnykh kharakteristik beskontaktnykh bezmaslyanykh vakuumnykh nasosov [A concept of calculation of pumping characteristics of non-contact oil-free vacuum pumps] // Kompressornaya tekhnika i pnevmatika. Compressors and Pneumatics. 2013. No. 4. P. 37–42. EDN: RCSESP. (In Russ.).
9. Burmistrov A. V., Salikeev S. I., Raykov A. A., Tyurin A. V., Yakupov R. R. Matematicheskaya model’ rabochego protsessa bezmaslyanogo spiral’nogo vakuumnogo nasosa [Mathematical simulation of a work cycle in an oil-free scroll vacuum pump] // Vestnik MGTU im. N. E. Baumana. Seriya «Mashinostroyeniye». Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering. 2018. No. 6 (123). P. 103–113. DOI: 10.18698/0236-3941-2018-6-103-114. EDN: VPKWJH. (In Russ.).
10. Burmistrov A., Salikeev S., Raykov A., Fomina M. Mathematical model of working process of oil free scroll vacuum pump: Influence of leakage and heat transfer on pumping characteristics // Vakuum in Forschung und Praxis. 2017. Vol. 29 (6). P. 28–31. DOI: 10.1002/vipr.201700663. (In Engl.).
11. Isaev A. A., Raykov A. A., Burmistrov A. V., Salikeev S. I. Poteri vo vkhodnom trakte dvukhrotornogo vakuumnogo nasosa [Losses in the inlet path of a two-rotor vacuum pump] // Vestnik mashinostroyeniya. Vestnik Mashinostroyeniya. 2021. No. 9. P. 44–46. DOI: 10.36652/0042-4633-2021-9-44-46. EDN: FTBNQZ. (In Russ.).
12. Raykov A., Tyrin A., Burmistrov A., Bronstein M., Fomina M. Calculation of backward flow in channels with moving walls in oil free non-contact vacuum pumps // AIP Conference Proceedings. 2019. No. 2141. 030024. P. 1–6. DOI: 10.1063/1.5122074. (In Engl.).
13. Sharapov I. I. Razrabotka metodiki izmereniya i rascheta parametrov protsessa teploobmena v shesterenchatom kompressore s tsel’yu povysheniya tochnosti rascheta rabochego protsessa [Development of a methodology for measuring and calculating the parameters of the heat exchange process in a gear compressor in order to increase the accuracy of the calculation of the working process]. Moscow, 2009. 146 p. (In Russ.).
14. Li Z., Li L., Zhao Y. [et al.]. Theoretical and experimental study of dry scroll vacuum pump // Vacuum. 2009. Vol. 84 (3). P. 415–421. DOI: 10.1016/j.vacuum.2009.09.005. (In Engl.).
15. Isayev A. A., Burmistrov A. V., Raykov A. A., Salikeyev S. I. Metod rascheta otkachnykh kharakteristik DVN tipa Ruts, rabotayushchikh pri povyshennykh davleniyakh (vyazkostnyy rezhim techeniya gaza v zazorakh) [Method for calculation of pumping characteristics of roots pump working at high pressures (viscous gas flow in clearances) // Nanoindustriya. Nanoindustry. 2021. Vol. 14, no. S6. P. 330–337. DOI: 10.22184/1993- 8578.2021.14.6s.330.337. EDN: JKHBQO. (In Russ.).
16. Burmistrov A. V. Sozdaniye i issledovaniye beskontaktnykh vakuumnykh nasosov [Creation and research of non-contact vacuum pumps]. Moscow, 2006. 363 p. (In Russ.).
Review
For citations:
Raykov A.A., Isaev A.A., Burmistrov A.V. Mathematical modeling non-contact external compression pumps with different molecular weights gases. Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering. 2024;8(3):46-52. (In Russ.) https://doi.org/10.25206/2588-0373-2024-8-3-46-52. EDN: GCGPGM
Views:
19
JATS XML
Email this article 