Advertisement

Ensuring Tightness of Sealing Joints at the Design Stage

  • P. OgarEmail author
  • A. Kozhevnikov
  • V. Kushnarev
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

The issues of ensuring the tightness of sealing joints are considered. It is indicated that to calculate the tightness at the design stage, it is necessary to know the regime of the outflow of the medium being sealed, which is determined by the Reynolds number. It is shown that the Reynolds number is determined by the ratio of the linear mass flow rate through the sealing joint to the dynamic viscosity of the sealed medium. Dependencies of the relative contact area, the density of gaps in the joint, and the probability of medium flow from the dimensionless force elastic-geometric parameter fq should be determined taking into account the mutual influence of asperities of the rough surface. Said contact characteristics determine the functional of the permeability Cu which characterizes the sealing capacity of the sealing joint. Their role in various periods of loading of a sealing joint by a dimensionless load is shown.

Keywords

Tightness Contact sealing pressures Permeability functional Relative contact area Gap density Medium leakage probability 

References

  1. 1.
    Ogar PM, Tarasov VA (2014) Design of special pipeline valves. BrSU, BratskGoogle Scholar
  2. 2.
    Ogar PM, Belokobylsky SV, Gorokhov DB (2018) Contact mechanics of rough surfaces in hermetic sealing study. In: Contact and Fracture Mechanics. InTechOpen Limited, LondonGoogle Scholar
  3. 3.
    Timofeev DP (1962) Kinetics of adsorption. Izd-vo AN SSSR, MoscowGoogle Scholar
  4. 4.
    Kosinskij VV (2006) Determination of the permeability coefficient of porous bodies impregnated with viscous liquids under pressure. Metallurgy. Proc Zaporozhye State Eng Acad 13:55–59Google Scholar
  5. 5.
    Kosinskij VV (2007) Nonlinear Darcy laws and Reynolds criterion for the flow of compressible fluids under high pressure in porous bodies. In: New materials and technologies in metallurgy and mechanical engineering, vol 1, pp 60–68Google Scholar
  6. 6.
    Bashta TM, Mendelson DA, Shifrin SN (1981) Calculation of gas leaks through the pneumatic valve. In: Operational reliability of the airframe and aircraft systems. KIIGA, KievGoogle Scholar
  7. 7.
    Dehshman S (1964) Scientific basis of vacuum technology. Mir, MoscowGoogle Scholar
  8. 8.
    Pipko AI, Pliskovskij VA (1979) Design and calculation of vacuum systems. Energy, MoscowGoogle Scholar
  9. 9.
    Daragan VL, Kotov YA, Melnikov GN, Pustostogarov AV, Starshinov VI (1970) Calculation of pressure loss during gas flow through porous materials. J Eng Phys 26:787–794Google Scholar
  10. 10.
    Ogar PM, Gorokhov DB, Kozhevnikov AS (2015) The density of gaps in the seal joint in elastic contact of microasperities. In 2nd international conference on modelling, identification and control (MIC 2015), ParisGoogle Scholar
  11. 11.
    Hyun S, Robbins MO (2007) Elastic contact between rough surfaces: effect of roughness at large and small wavelengths. Tribol Int 40:1413–1422CrossRefGoogle Scholar
  12. 12.
    Yeo C-D, Katta RR, Lee J, Polycarpou AA (2010) Effect of asperity interactions on rough surface elastic contact behavior: hard film on soft substrate. Tribol Int 43:1438–1448CrossRefGoogle Scholar
  13. 13.
    Xu Y, Jackson RL. Marghitu DB. (2014) Statistical model of nearly complete elastic rough surface contact. Int J Solids Struct 51:1075–1088CrossRefGoogle Scholar
  14. 14.
    Yastrebov VA, Anciaux G, Molinari J-F (2015) From infinitesimal to full contact between rough surfaces: evolution of the contact area. Int J Solids Struct 52:83–102CrossRefGoogle Scholar
  15. 15.
    Xu Y, Jackson RL (2017) Statistical models of nearly complete elastic rough surface contact-comparison with numerical solutions 105:274–291Google Scholar
  16. 16.
    Ogar P, Gorokhov D, Belokobylsky S (2017) The elastic-plastic contact of a single asperity of a rough surface. MATEC Web of Conf 129:06017CrossRefGoogle Scholar
  17. 17.
    Ogar PM, Gorokhov DB (2017) Influence of materials hardenability parameters on the machine parts characteristics after unloading. Key Eng Mater 723:369–375CrossRefGoogle Scholar
  18. 18.
    Ogar P, Gorokhov D, Ugryumova E (2017) Mechanics of unloading of a rough surfaces pre-loaded joint. MATEC Web of Conf 129:06016CrossRefGoogle Scholar
  19. 19.
    Tihomirov VP, Gorlenko OA (1989) Criterion for tightness of flat mates. J Friction Wear 10:214–218Google Scholar
  20. 20.
    Tihomirov VP, Poroshin VV, Gorlenko OA, Izmerov MA (2014) Tightness detachable fixed joints. MGIU, MoscowGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Bratsk State UniversityBratskRussia

Personalised recommendations