Temperature monitoring of working components in an oil-free screw vacuum pump

To refine the mathematical model of the operating process of a dry screw vacuum pump with variable pitch (DSVP), knowledge of the temperatures of the pump’s main working elements is necessary. The mathematical model allows for predicting the characteristics of newly developed DSVPs at the design stage, reducing the time and resources required to develop new machines. The model takes into account the heat exchange between the pumped gas and the rotor and casing walls. However, only a full-scale experiment can provide the most reliable data on the working surface temperatures. In this study, a series of full-scale experiments were conducted to measure the temperatures of the DSVP’s working elements under various operating conditions. The obtained data are of significant practical interest and were also used to refine and verify the calculations performed in the mathematical model.
EDN: WTXQOG, https://elibrary/wtxqog

References

[1] Laskin A.A., Raykov A.A., Burmistrov A.V. Mathematical simulation of the oil-free screw vacuum pump operation. Izvestiya vysshikh uchebnykh zavedeniy. Mashinostroenie [BMSTU Journal of Mechanical Engineering], 2025, no. 6, pp. 73–84. EDN: MMOPJB (in Russ.).

[2] Laskin A.A. [Pumping characteristics of a screw vacuum pump when pumping various gases]. Tekhnika i tekhnologiya neftekhimicheskogo i neftegazovogo proizvodstva. Mat. 15-y Mezhd. nauch.-tekh. konf. [Engineering and Technology of Petrochemical and Oil and Gas Production. Proc. 15th Int. Sci.-Tech. Conf.]. Omsk, OmGTU, 2025. s. 26–27. EDN: OLRZSA (in Russ.).

[3] Salikeev S.I., Burmistrov A.V., Raykov A.A. A concept of calculation of pumping characteristics of non-contact oil-free vacuum pumps. Kompressornaya tekhnika i pnevmatika [Compressors & Pneumatics], 2013, no. 4, pp. 37–42. (In Russ.).

[4] Wang J., Zhao X., Zhao L. et al. Clearance distribution design and thermal deformation analysis of variable-pitch screw rotors for twin-screw vacuum pumps. Vacuum, 2023, vol. 211, art. 111936, doi: https://doi.org/10.1016/j.vacuum.2023.111936

[5] Cui Y., Wang Q., Wang G. Thermal deformation of rotors and casing in operation of screw vacuum-pump. Journal of Vacuum Science and Technology, 2015, vol. 35, no. 11, pp. 1291–1294, doi: https://doi.org/10.13922/j.cnki.cjovst.2015.11.01

[6] Khisameev I.G., Maksimov V.A. Dvukhrotornye vintovye i pryamozubye kompressory [Twin-rotor screw and spur compressors]. Kazan, FEN Publ., 2000. 638 p. (In Russ.).

[7] Sakun I.A. Vintovye kompressory [Screw compressors]. Moscow, Mashinostroenie Publ., 1970. 400 p. (In Russ.).

[8] Basha N., Kovacevic A., Rane S. Numerical investigation of oil injection in screw compressors. Appl. Therm. Eng., 2021, vol. 193, art. 116959, doi: https://doi.org/10.1016/j.applthermaleng.2021.116959

[9] Liu G., Xing Z., Sun S. at al. Analysis on performance of screw compressor in MVR system. IOP Conf. Ser.: Mater. Sci. Eng., 2019, vol. 604, art. 012002, doi: https://doi.org/10.1088/1757-899X/604/1/012002

[10] Rane S.R., Kovacevic A., Akhtar K. et al. Thermal analysis of a twin screw vacuum pump using CFD model. ICEC, 2024, art. 2796. URL: https://docs.lib.purdue.edu/icec/2796 (accessed: 15.12.2025).

[11] Saravana A., Liu H., Able N. et al. Conjugate heat transfer analysis of a twin-screw compressor with 4-6 configuration and internal cooling channels. IOP Conf. Ser.: Mater. Sci. Eng., 2022, vol. 1267, art. 012014, doi: https://doi.org/10.1088/1757-899X/1267/1/012014

[12] Li D., He Z., Wang C. et al. Simulation of dry screw vacuum pumps based on chamber model and thermal resistance network. Appl. Therm. Eng., 2022, vol. 211, art. 118460, doi: https://doi.org/10.1016/j.applthermaleng.2022.118460

[13] Patel B., Rane S., Kovacevic A. et al. Infrared-thermography and numerical investigation of conjugate heat transfer in roots blower. ICEC, 2022, vol. 2709. URL: https://docs.lib.purdue.edu/icec/2709/ (accessed: 15.12.2025).

[14] Daemgen U., Hadamitzky P., Dohmann J. Thermal expansion in liquid-injected screw compressors. IOP Conf. Ser.: Mater. Sci. Eng., 2018, vol. 425, art. 012010, doi: https://doi.org/10.1088/1757-899X/425/1/012010

[15] Sayfetdinov A.G. Sovershenstvovanie metoda rascheta rabochego protsessa rotornogo kompressora vnutrennego szhatiya s ispolzovaniem rezultatov eksperimentalnykh issledovaniy teploobmena v rabochey polosti. Diss. kand. tekhn. nauk [Improving the method for calculating the operating process of a rotary internal compression compressor using the results of experimental studies of heat transfer in the working cavity. Kand. tech. sci. diss.]. Kazan, KNITU Publ., 2013. 190 p. (In Russ.).

[16] Sharapov I.I. Razrabotka metodiki izmereniya i rascheta parametrov protsessa teploobmena v shesterenchatom kompressore s tselyu povysheniya tochnosti rascheta rabochego protsessa. Diss. kand. tekhn. nauk [Development of a method for measuring and calculating heat transfer process parameters in a gear compressor in order to improve the accuracy of operating process calculations. Kand. tech. sci. diss.]. Kazan, KGTU Publ., 2009. 146 p. (In Russ.).

[17] Chang M.-S., Park J., Kim S.-T. et al. A study on the thermal characteristics of dry vacuum pump with vertical screws. J. Kor. Soc. Manuf. Process Eng., 2015, vol. 14, no. 2, pp. 67–74, doi: https://doi.org/10.14775/ksmpe.2015.14.2.067

[18] Tam T., Kovacevic A., Milligan W. et al. Experimental investigation of screw compressor clearance monitoring techniques. ICEC, 2022, vol. 2715. URL: https://docs.lib.purdue.edu/icec/2715/ (accessed: 15.12.2025).

[19] Laskin A.A., Kapustin E.N., Raykov A.A. et al. [Experimental study of pumping characteristics of a screw vacuum pump]. Vakuumnaya tekhnika i tekhnologii — 2024. Mat. 31-y Vseros. nauch.-tekh. konf. [Vacuum Engineering and Technology — 2024. Proc. 31st Russ. Sci.-Tech. Conf.]. Sankt-Peterburg, SPbGETU LETI Publ., 2024, pp. 118–122. (In Russ.).

[20] Vlasenkov A.I., Laskin A.A., Burmistrov A.V. [Temperature measurement of bearing assemblies. Analysis of screw vacuum pump bearing failure]. Tekhnika i tekhnologicheskie protsessy teplovykh i kholodilnykh ustanovok. Mat. Vseros. studench. nauch.-tekh. konf. [Engineering and Technological Processes of Heating and Refrigeration Units. Proc. Russ. Stud. Sci.-Tech. Conf.]. Kazan, KNITU Publ., 2024, pp. 120–122. (In Russ.).

[21] Isaev A.A., Raykov A.A., Burmistrov A.V. et al. Thermometering of roots vacuum pump. Vestnik RVO, 2023, no. 2, pp. 12–19. (In Russ.).