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Eddy current confinement centrifugal pump pumping chamber and centrifugal pump with same

A centrifugal pump and pressurized water chamber technology, which is applied to the components, pumps, and pump elements of the pumping device for elastic fluids, can solve problems such as unstable flow structure, and achieve the goal of suppressing the development of eddy currents, reducing the strength of eddy currents, Ease of processing and fabrication

Active Publication Date: 2015-02-04
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the diffusion section, due to the effect of the boundary layer, a secondary flow is formed in the flow channel, and this flow structure diffuses downstream, resulting in a complex vortex flow in the diffusion section of the pressurized water chamber. This flow structure is unstable and very regular

Method used

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  • Eddy current confinement centrifugal pump pumping chamber and centrifugal pump with same
  • Eddy current confinement centrifugal pump pumping chamber and centrifugal pump with same
  • Eddy current confinement centrifugal pump pumping chamber and centrifugal pump with same

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Embodiment Construction

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0021] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the descrip...

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Abstract

The invention discloses an eddy current confinement centrifugal pump pumping chamber and a centrifugal pump with the same. In the eddy current confinement centrifugal pump pumping chamber, jet grooves are uniformly formed in the inner wall of a diffusing section of the pumping chamber along the circumference; the length direction of the jet grooves is parallel to the flow line of the diffusing section of the pumping chamber. The jet groove structure produces a micro jet by using adverse pressure gradient in the diffusing section of the pumping chamber, and the micro jet is mixed with a main flow in the diffusing section of the pumping chamber to reduce the eddy current intensity in the diffusing section and confine eddy current development in the diffusing section, so that the stability for operation of the centrifugal pump is improved; meanwhile the micro jet has extremely small influence on the main flow in the diffusing section of the pumping chamber and also has extremely influence on the operation efficiency of the centrifugal pump. The eddy current confinement centrifugal pump pumping chamber has a simple structure, is easy to machine and manufacture and is applicable to any type of centrifugal pump.

Description

technical field [0001] The invention relates to the technical field of centrifugal pumps, in particular to a centrifugal pump water pressure chamber for suppressing eddy currents and a centrifugal pump with the centrifugal pump. Background technique [0002] Before the 1990s, research on centrifugal pumps tended to focus on energy characteristics. In recent years, with the development of large-scale centrifugal pump units, especially after the energy characteristics of the units have reached a better level, more and more attention has been paid to the operational stability of centrifugal pump units. At present, some large-scale pump units put into operation have various levels of noise, vibration and other phenomena related to hydraulic instability, which seriously affect the safe operation of the units. [0003] Model tests and field observations show that the noise and vibration of the centrifugal pump unit come from the unsteady eddy current in the flow-passing parts and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/44F04D29/66
CPCF04D29/445F04D29/669
Inventor 谭磊曹树良祝宝山孟根其其格徐昀屈万世
Owner TSINGHUA UNIV
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