High-lift multi-stage side channel pump with gas-liquid mixed flow

Abstract

The invention discloses a high-lift multi-stage side channel pump with gas-liquid mixed flow, and relates to the technical field of multi-stage side channel pump design. The high-lift multi-stage sidechannel pump includes first-stage impellers, radial starlike impellers and arc-shaped flow channels. The first-stage impellers are centrifugal impellers for improving the anti-cavitation capability,gaps are adapted to drainage a blade, the gaps are located near inlets, the flow conditions at fluid inlets can be improved, the operating efficiency of the side channel pump is improved, and the anti-cavitation capability of the multi-stage side channel pump is further improved. The radial starlike open-type impellers are used for impellers of the second-stage and remaining stages, and the arc-shaped closed channels are added on the right sides of the open-type impellers; the open-type impellers and the closed channels are combined to further improve the anti-cavitation capability of the multi-stage side channel pump, the self-absorption ability can be further improved. The finally-assembled side channel pump can be stably operated in a conveying medium with a high gas content to meet theoperating condition requirements of gas-liquid mixed flow.

Description

technical field [0001] The invention relates to the technical field of multi-stage side channel pump design, in particular to a high-lift multi-stage side channel pump capable of gas-liquid mixed transport. Background technique [0002] The structure of the present invention is based on a multi-stage side channel pump. The side channel pump belongs to the ultra-low specific speed vane pump type. It is named because there is a space channel on one side of the impeller. The inter-radial vane pump is a new type of vortex pump with a small operating flow but a relatively high lift. Since the side channel pump is also a type of vortex pump, its anti-cavitation ability is poor. The performance of the runner pump will change greatly due to cavitation. According to the amount of gas content, the side runner pump will have corresponding vibration and noise. In severe cases, the side runner pump will not be able to operate, which will affect the reliability and safety of the system. ...

AI Technical Summary

Problems solved by technology

Since the side channel pump is also a type of vortex pump, its anti-cavitation ability is poor. The performance of the runner pump will change greatly due to cavitation. According to the amount of gas content, the side runner pump will have corresponding vibration and noise. In severe cases, the side runner pump will not be able to operate, which will affect the reliability and safety of the system. , so how to improve the cavitation resistance and hydraulic performance of the multistage side channel pump by optimizing the flow parts, and then improve its gas-liquid mixed transportation capacity, is an urgent problem to be solved in the design and development of the multistage side channel pump.

[0003] After searching, no documents and patents identical to the high-lift multi-stage side channel pump proposed by the present invention that can realize gas-liquid mixed transportation have been found.

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