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Design method of impeller and pressurized water chamber of a high-lift vortex pump

A pressurized water chamber and vortex pump technology, which is applied to parts, pumps, and pump components of elastic fluid pumping devices, can solve the difficulty of manufacturing and processing vortex pump units, and does not propose the design of impellers and pressurized water chambers method, unable to adapt to changes in head working conditions, etc., to achieve the effects of improving internal flow conditions, increasing design head and design flow values, and stabilizing performance curve characteristics

Active Publication Date: 2016-08-24
HUAWEI TEHCHNOLOGIES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These two patents have the following three problems: 1. The problem that the conventional vortex pump cannot adapt to the change of the head condition and the sudden drop of the head under the large flow condition is not solved; 2. The design of the impeller and the pressurized water chamber that is different from the conventional vortex pump is not proposed Method; 3. The structural improvements of the above two patents have increased the manufacturing and processing difficulty of the vortex pump unit

Method used

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  • Design method of impeller and pressurized water chamber of a high-lift vortex pump
  • Design method of impeller and pressurized water chamber of a high-lift vortex pump
  • Design method of impeller and pressurized water chamber of a high-lift vortex pump

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Embodiment Construction

[0072] figure 1 and figure 2 Together, the geometrical and dimensional parameters of this high head scroll pump embodiment were determined. This is a vortex pump with closed impeller double-side open flow channel. The impeller blades (12) and the pressurized water chamber (8) are symmetrically arranged on both sides. The impeller blades (12) adopt a straight blade structure. ) is axisymmetrically distributed on the outer edge. The pressure water chamber (8) has a trapezoidal structure, and its flow area is larger than the design value of the conventional vortex pump, which is beneficial to reduce the hydraulic loss of the liquid in the pressure water chamber and improve the momentum exchange level of the liquid in the impeller blade (12). Water outer diameter D v2 (5) slightly larger than the outer diameter of the impeller D 1 (1), the width of the pressurized water chamber b 2 Greater than the impeller outlet width b 1 . The inlet pipe and outlet pipe of the vortex pu...

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Abstract

The invention provides a design method for an impeller and a pressurized water chamber of a high-lift vortex pump. The vortex pump has the characteristics of high lift and large flow, and is suitable for fields such as agricultural plant protection, food and medicine. It connects the geometric parameters of the impeller and the pressure water chamber with the performance parameters of the pump design point, and gives several relational expressions to determine the main geometric parameters of the impeller and the pressure water chamber, including: Impeller outer diameter D 1 , the impeller outlet width b 1 , blade width b i , vane height h, vane number z, clapboard installation angle θ, pressurized water outer diameter D v2 , inner diameter of pressurized water D v1 and pressurized water chamber width b 2 . The vortex pump designed by the invention has the characteristics of high lift, large flow rate and stable performance curve, can be used for the transportation of vapor-liquid mixed medium, and has good operation stability and suction performance.

Description

technical field [0001] The patent of the present invention relates to a design method of an impeller and a pressurized water chamber of a high-lift vortex pump, specifically, a design method of a high-lift vortex pump suitable for the fields of agricultural plant protection, medicine and food. Background technique [0002] The vortex pump is a type of centrifugal pump with a very low specific speed. It is used in various industrial and agricultural pipeline pressurization occasions, and is suitable for the transportation of some acids, alkalis and corrosive liquids. Conventionally designed vortex pumps generally have the characteristics of small flow, low efficiency, and poor cavitation performance. Especially under the condition of large flow, the head of conventionally designed vortex pumps will drop sharply, and the outlet pressure will also increase with the The rapid decrease cannot satisfy the function of pressurized delivery of the pipeline. Therefore, the pump is not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/22F04D29/42
Inventor 欧鸣雄
Owner HUAWEI TEHCHNOLOGIES CO LTD
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