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Flexible guide vane structure of mixed-flow pump with adjustable flow area, mixed-flow pump and adjustment method

A technology of flow area and mixed flow pumps, which is applied in the direction of non-volume pumps, non-variable pumps, rotary non-variable pumps, etc., to achieve the effects of widening the high-efficiency area, optimizing the flow field structure, and improving efficiency

Active Publication Date: 2022-07-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there have been some improvement measures for the formation of the stall phenomenon in the impeller of the mixed flow pump, but there is no relevant report on improving the stall phenomenon in the guide vane of the mixed flow pump through technical means

Method used

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  • Flexible guide vane structure of mixed-flow pump with adjustable flow area, mixed-flow pump and adjustment method
  • Flexible guide vane structure of mixed-flow pump with adjustable flow area, mixed-flow pump and adjustment method
  • Flexible guide vane structure of mixed-flow pump with adjustable flow area, mixed-flow pump and adjustment method

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Embodiment Construction

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0033]The flexible guide vane structure of the mixed-flow pump with adjustable flow area according to the present invention includes m flexible guide vane blades 17 and a flexible guide vane adjusting device. The flexible guide vane adjusting device includes m groups of support ribs 8 and n support ribs Base 5 and n groups of base drive mechanisms, the number of support ribs 8 in each group of support ribs is n; one end of each support rib 8 in m groups of support ribs 8 is respectively fixed and installed on a support rib base 5, wherein, m is a positive integer greater than 2, and n is a positive integer greater than 5; the flexible guide vane blades 17 are fixedly installed on the support ribs 8, and a group of support ribs 8 is used as the skeleton of a flexible guide va...

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Abstract

The invention provides a flexible guide vane structure of a mixed-flow pump with adjustable flow area, a mixed-flow pump and an adjustment method. The flexible guide vane structure is composed of a flexible guide vane blade and a flexible guide vane adjusting device. The flexible guide vane adjusting device It includes a supporting rib, a supporting rib base and a base driving mechanism. The supporting rib is used as the skeleton of the flexible guide vane blade, and the change of the shape of the flexible blade is realized through the base driving mechanism and the supporting rib base. In the mixed-flow pump, the flexible guide vane adjustment device is installed inside the blade hub, and the angle of the support ribs is adjusted based on the real-time working conditions of the mixed-flow pump through the over-flow section feedback adjustment system, so as to adjust the over-flow area of ​​the blade to achieve the best working conditions. condition.

Description

technical field [0001] The invention belongs to the technical field of fluid machinery (pump) internal flow, in particular to a flexible guide vane structure of a mixed-flow pump with adjustable flow area, a mixed-flow pump and an adjustment method. Background technique [0002] As the core power equipment in the fields of sewage treatment, mining, power generation and flood control and drainage, the mixed-flow pump is increasingly used in industrial and agricultural production due to its large flow and moderate lift. However, because the mixed-flow pump design theory is not perfect at present, and it is always designed based on the rated flow operating point, it cannot meet the increasing demand for multiple operating points and wide and high-efficiency areas in industrial and agricultural production. In particular, for the mixed-flow pump structure designed by classical design theory, when the flow rate is reduced to a certain value, the rotating stall effect often occurs ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/40F04D13/06F04D11/00F04D15/00
CPCF04D29/403F04D13/06F04D11/00F04D15/00
Inventor 季磊磊李伟刘栋路德乐李硕杨毅
Owner JIANGSU UNIV
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