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Title:
STAGE IN A SUBMERGED MULTIPLE-STAGE PUMP
Document Type and Number:
WIPO Patent Application WO/1999/027257
Kind Code:
A2
Abstract:
The present invention pertains to the construction of machines for the petroleum industry and more precisely relates to bore-hole multiple-stage pumps used for pumping a liquid from a geological layer. This invention can be used for increasing the pressure head upon reduced feed and for stabilising the operation characteristics in the presence of gas pockets in the medium to be pumped. To this end, a stage comprises a working wheel including a driving disc and a driven disc between which vanes are arranged, as well as a guiding apparatus with profiled vanes whose front edges protrude from the outer diameter of the external lid of said apparatus. In this stage, triangular cells opened towards the outer side of the disc are provided on the periphery of the driving disc of the working wheel on the side surface thereof, while a lateral annular channel is formed on the outer lid surface of the guiding apparatus, said surface being connected to the wheel. The distance between the surface of the lateral annular channel on the guiding apparatus and the upper edge of the cells on the working wheel represents at least 0.3 times the depth of the latter. The length of the cells in a radial direction represents not more than 0.3 times the radius of the driving disc.

Inventors:
RABINOVICH ALEXANDR ISAAKOVICH (RU)
PERELMAN OLEG MIKHAILOVICH (RU)
KUPRIN PAVEL BORISOVICH (RU)
MELNIKOV MIKHAIL JURIEVICH (RU)
DOROGOKUPETS GENNADY LEONIDOVI (RU)
IVANOV OLEG EVGENIEVICH (RU)
TREGUBOV GRIGORY SAMARIEVICH (RU)
TRYASTSYN IGOR PAVLOVICH (RU)
MELNIKOV DENIS JURIEVICH (RU)
AGEEV SHARIFZHAN RAKHIMOVICH (RU)
GUSIN NIKOLAI VASILIEVICH (RU)
VYDRINA IRINA VASILIEVNA (RU)
SHTENNIKOVA GALINA ALEXANDROVN (RU)
SEMENOV JURY LVOVICH (RU)
Application Number:
PCT/RU1998/000396
Publication Date:
June 03, 1999
Filing Date:
November 24, 1998
Export Citation:
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Assignee:
ZAKRYTOE AKTSIONERNOE OBSCHEST (RU)
RABINOVICH ALEXANDR ISAAKOVICH (RU)
PERELMAN OLEG MIKHAILOVICH (RU)
KUPRIN PAVEL BORISOVICH (RU)
MELNIKOV MIKHAIL JURIEVICH (RU)
DOROGOKUPETS GENNADY LEONIDOVI (RU)
IVANOV OLEG EVGENIEVICH (RU)
TREGUBOV GRIGORY SAMARIEVICH (RU)
TRYASTSYN IGOR PAVLOVICH (RU)
MELNIKOV DENIS JURIEVICH (RU)
AGEEV SHARIFZHAN RAKHIMOVICH (RU)
GUSIN NIKOLAI VASILIEVICH (RU)
VYDRINA IRINA VASILIEVNA (RU)
SHTENNIKOVA GALINA ALEXANDROVN (RU)
SEMENOV JURY LVOVICH (RU)
International Classes:
F04D1/06; F04D13/10; F04D29/22; F04D31/00; (IPC1-7): F04D5/00
Foreign References:
CH544980A1973-11-30
Other References:
""Novel low-delivery high-head pumps"", 1 January 1973, K.N. SPASSKY AND V.V. SHAUMIAN, RUSSIAN, article "Moscow Mashinostroyeniye PH", pages: 122
""Centrifugal submersible pumps for oil production"", 1 January 1968, N.A. BOGDANOV, RUSSIAN, article "Moscow Nedra PH", pages: 38 - 50
See also references of EP 1033493A4
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