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Wear of axial pumps by turbidity currents

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  • At the Construction Projects of the Five-Year Plan
  • Published:
Hydrotechnical Construction Aims and scope

Conclusions

  1. 1.

    In order to increase the operating period and service life of axial pumps transferring liquids with a high content of hard particles, they should be operated at maximum efficiency, at all installation angles of impeller blades.

  2. 2.

    Superimposition of isolines of hydroabrasive wear onto the universal characteristic diagram enables optimal operational regimes for pumps to be selected on a well-founded basis, and also makes it possible to make engineering-economic comparisons of alternative pumping-station arrangements which differ in the number of units.

  3. 3.

    The data obtained regarding changes in the zones of hydroabrasive wear on components of the flow-through parts of axial pumps, which occurs as their operating conditions are varied, enables design measures to be taken for their protection.

  4. 4.

    The protective effect of cavitation, which is based on the damping properties of the cavitation zone, when traced experimentally over a wide range of change in the concentration of the turbidity current and the operational pump parameters, enables, within certain limits, the intensity of total cavitational-abrasive wear to be reduced.

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Literature cited

  1. V. Ya. Karelin, Wear of Hydraulic Machinery by Cavitation and Sediments [in Russian], Mashinostroenie, Moscow (1970).

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  2. M. M. Orakhelashvili, Wear Resistance of Reaction Turbines [in Russian], Gosénergoizdat, Moscow-Leningrad (1960).

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  3. S. P. Kozyrev, Hydroabrasive Wear of Metals under Cavitation [in Russian], Mashinostroenie, Moscow (1971).

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  4. Axial Pumps Types “O” and “OP” and Centrifugal Pumps Types “V”, Catalog-handbook, TsINTIKhIMNEFTEMASh, Moscow (1970).

  5. K. Kh. Ulugkhozhdaev, N. Raiimzhonov, and M. Mamazhonov, Hydroabrasive Wear of Centrifugal Pump Elements Used Under the Conditions of the Andizhansk Province of the Uzbek SSR [in Russian], Transactions of the Tbilisi Scientific-Research Institute of Melioration and Agriculture (TNIIMSKh), No. 59, Tashkent (1973).

  6. V. E. Volin and E. D. Lunatsi, Accelerated Determination of Cavitational-Erosive Properties of Hydraulic Machines, Using Easily Eroded Lacquer Coatings [in Russian], Trans. VNIIGidromash, No. 37, Moscow (1968).

  7. V. Ya. Karelin, R. A. Novoderezhkin, V. A. Tsoi, and M. Mamazhonov, Cavitational-Abrasive Wear of Centrifigual Pumps [in Russian], in: Coll. of papers of Conf. “Gidroturbo-76,” Brno, Czechoslovakia.

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Authors
  1. V. Ya. Karelin
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  2. M. Mamazhonov
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Additional information

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 1, pp. 29–32, January, 1978.

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Karelin, V.Y., Mamazhonov, M. Wear of axial pumps by turbidity currents. Hydrotechnical Construction 12, 46–50 (1978). https://doi.org/10.1007/BF02304374

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  • DOI: https://doi.org/10.1007/BF02304374

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