Design method for impeller of multiphase mixed transportation pump

A design method and technology for pump impellers, which are applied to components, pumps, and pump components of pumping devices for elastic fluids, can solve problems such as head, flow drop, impact on pump performance, and pump delivery efficiency reduction, etc. Small content, excellent hydraulic performance, high efficiency

Inactive Publication Date: 2013-03-20
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the pump works in multiphase such as oil and gas, due to the existence of gas, there is a speed slip between the liquid phase and the gas phase, and the head and flow of the pump will decrease to a certain extent. With the increase of the gas content, this The phenomenon will become more and more obvious, which will reduce the pump delivery efficiency and affect the performance of the pump.

Method used

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  • Design method for impeller of multiphase mixed transportation pump
  • Design method for impeller of multiphase mixed transportation pump
  • Design method for impeller of multiphase mixed transportation pump

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Embodiment Construction

[0033] figure 1 with figure 2 Together determine the impeller shape for this embodiment. It has an impeller cover plate (1), which has a front cover plate and a rear cover plate respectively. It is a closed impeller, and the number of blades is 3≤z≤6, which can improve the flow condition and improve the hydraulic performance and gas resistance of the mixed pump. effect on its delivery capacity. The present invention determines impeller inlet diameter (2) D by the following relations j , impeller outlet diameter (3)D 2 , Impeller blade outlet width (5)b 2 .

[0034] D j = ( 3.5 + n s 500 ) · Q n 3 ;

[0035] D 2 = ( 9.31 ...

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Abstract

The invention relates to a design method for an impeller of a multiphase mixed transportation pump. With the adoption of the design method, hydraulic performance of the mixed transportation pump is improved, and the influences of gas content on the performances of the mixed transportation pump are reduced through controlling main geometrical parameters such as an inlet diameter, an impeller outlet diameter, an outlet width of each impeller blade; the thickness of a front cover plate side of each impeller blade is 25% less than the thickness of a rear cover plate side; the thickness of each blade is uniformly increased from the front cover plate side to the rear cover plate side according to linearity; the thickness of each blade is gradually increased along a filament line direction from an inlet edge to an outlet edge; the thickness of each inlet edge is about 40% of the thickness of the corresponding outlet edge; and the number of the blades of the impeller is 3 to 6.

Description

technical field [0001] The invention relates to fluid machinery, in particular to a design method for the impeller of a multiphase mixed pump. Background technique [0002] Multi-phase mixed pumps are most widely used in oil field production. At present, screw mixed pumps are widely used in China, which are mainly used to reduce wellhead back pressure and increase liquid production. However, the solid-phase impurity margin of the screw mixed-transport pump is generally small, and its displacement is also small due to the limitation of the geometric size of the pump, so the screw mixed-transport pump is not convenient for large-displacement oil-gas multi-phase transportation. The vane mixed pump has simple structure, large displacement, strong reliability, good adaptability to solid phase impurities, and can meet the needs of large displacement oil and gas multiphase transportation. When the pump works in multiphase such as oil and gas, due to the existence of gas, there is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22
Inventor 付强朱荣生袁寿其习毅王秀礼龙云蒋旭松
Owner JIANGSU UNIV
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