Guide vane exit circulation homogenizer for axial-flow pump and guide vane type mixed-flow pump model

Abstract

The invention provides a guide vane exit circulation homogenizer for an axial-flow pump and a guide vane type mixed-flow pump model, belonging to the technical field of water pump model tests. The circulation homogenizer comprises a hub, blades, a fixed axis and supported hole blades, wherein the fixed axis is provided with a shaft concentric with the model pump shaft and the guide vane hub central shaft, the diameter of the hub is the same with that of the guide vane hub, the hub is uniformly provided with 8-12 straight blades along the circumferential direction of the hub, two ends of the hub are provided with the supported hole blades, the hub can be freely sleeved on the fixed shaft through the holes of the supported hole blades on the two ends of the hub; one end of the circulation homogenizer is connected with a guide vane exit, the other end is connected with a water outlet runner; when the swirling current of the guide vane exit and the homogenizer blades in a free state can achieve synchronous rotation by a mutual effect, the water flow circulation flowing through the homogenizer can be homogenized. The homogenizer can homogenize the water flow circulation at the guide vane exit, which can provide an essential condition for studying the waterpower performance of the water outlet runner on the condition that the water flow circulation at the guide vane exit is uniformly distributed.

Description

technical field [0001] The invention relates to a water pump model, in particular to a technique for homogenizing the outlet circulation of an axial flow pump and a guide vane type mixed flow pump model, and belongs to the technical field of water pump model tests. Background technique [0002] The water flowing out of the guide vanes of the axial flow pump and the guide vane mixed flow pump has a certain circulation, but the distribution of the circulation is not uniform. Studies in recent years have found that the distribution of circulation has a great influence on the hydraulic performance of the outlet channel of the low-lift pump device. In order to study the hydraulic performance of the outlet channel under the condition of uniform distribution of water circulation at the outlet of the guide vane, so as to compare it with the hydraulic performance of the outlet channel under the condition of natural distribution of the circulation, it is necessary to homogenize the ci...

AI Technical Summary

Problems solved by technology

[0003] The circulation of the water flow at the outlet of the guide vane of the axial flow pump and the guide vane mixed flow pump is uneven in the natural distribution, which makes it impossible to study the hydraulic performance of the outlet channel when the water flow circulation is evenly distributed.

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