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Method for designing hydraulic model of blade front bent type circulating booster pump

A technology of cyclic pressurization and design method, applied in the direction of non-variable-capacity pumps, components of pumping devices for elastic fluids, pumps, etc.

Active Publication Date: 2014-09-03
江苏双达泵业股份有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiency of the hydraulic model design method of the existing circulating booster pump, the present invention provides a new hydraulic model design method of the blade forward-curved circulating booster pump

Method used

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  • Method for designing hydraulic model of blade front bent type circulating booster pump
  • Method for designing hydraulic model of blade front bent type circulating booster pump
  • Method for designing hydraulic model of blade front bent type circulating booster pump

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Embodiment Construction

[0058] figure 1 and figure 2The geometrical and dimensional parameters of this hydraulic model embodiment of a forward-curved-vane circulating booster pump were jointly determined. The pump adopts a closed impeller structure, and the impeller blades (16) are backward curved, so that the flow and head performance parameters of the design working point of the circulating booster pump are larger, and the outer diameter of the impeller rear cover plate is D 4 (11) slightly smaller than the outer diameter of the front cover plate (5) of the impeller, which is conducive to reducing the axial load of the impeller and improving the reliability of the rotor components of the circulating booster pump. The pressure water chamber of the circulating booster pump adopts the type of annular flow channel (6), which is beneficial to reduce the radial dynamic load of the impeller, makes the impeller run more smoothly, and the vibration level of the pump unit is lower. Annular channel width b...

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Abstract

The invention provides a method for designing a hydraulic model of a blade front bent type circulating booster pump. The pump is suitable for the fields of building water supply, fire control, solar energy and the like. The hydraulic model of the pump comprises an impeller and an annular flow channel, the geometric dimension parameters of the impeller and the annular flow channel and the performance parameters of the design operating points of the circulating booster pump are related through a relational expression, and several relational expressions are given to determine the main geometric dimension parameters of the impeller and the annular flow channel. The main geometric dimension parameters comprise the outer diameter D2 of the impeller, the inclination angle phi of the inlet edge of the impeller, the width b3 of the annular flow channel, the outer diameter D3 of the annular flow channel, the outer diameter D4 of an impeller rear cover plate, the placing angle beta of a working face outlet of the impeller and the placing angle theta of a flow channel insulation tongue. The circulating booster pump designed through the method has the advantages of being large in flow quantity, high in lift, stable in outlet voltage supply, compact and reliable in structure, and particularly suitable for fluid conveying occasions under the condition of narrow space.

Description

technical field [0001] The patent of the present invention relates to a hydraulic model design method of a blade forward-curved circulating booster pump, specifically, to a hydraulic model design method of a circulating booster pump applicable to the fields of building water supply, fire protection and solar energy. Background technique [0002] At present, the conventional circulating booster pump generally adopts the impeller type of centrifugal pump with backward curved blade structure. For the circulating booster pump with backward curved blade structure, its head performance curve generally decreases gradually with the increase of flow rate, especially in the In the case of a large flow operating point, the head drops significantly, resulting in a drop in the outlet pressure of the large flow operating point. For the occasions where circulating booster pumps are used in building water supply and fire protection, it is often required to maintain a stable outlet pressure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22F04D29/24
Inventor 欧鸣雄
Owner 江苏双达泵业股份有限公司
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