Vibration and noise reduction centrifugal pump provided with bionic structures

Abstract

A vibration and noise reduction centrifugal pump provided with bionic structures comprises a volute, a connecting shaft, a motor and an impeller. The motor is fixed to the exterior of a shell. The connecting shaft is supported on the volute and extends into the volute. The impeller comprises blades, a front cover plate and a rear cover plate. The blades are installed at the position, between the front cover plate and the rear cover plate, of the connecting shaft and are located inside the volute. The motor is in shaft connection with the impeller through the connecting shaft. A first bionic segment is arranged below a volute diffusion segment, and the contour shape of the longitudinal section of the first bionic segment is an arc toothed structure simulating the outer contour of bird wings. A starting point of the first bionic segment is located at the starting part of an isolation tongue, and an ending point of the first bionic segment extends to the position between a first section and a second section of a volute pumping chamber. The arc part of the head of the isolation tongue is provided with at least one column of raised bionic surface structures. The centrifugal pump has the advantages that the amplitude of the most intense part of internal pressure pulsation of the centrifugal pump is reduced; the flow and lift of the centrifugal pump can be conveniently, accurately and effectively enhanced, and meanwhile the hump of a centrifugal pump performance curve can be improved.

Description

technical field [0001] The invention relates to a vibration-reducing and noise-reducing centrifugal pump with a bionic structure. Background technique [0002] As a general-purpose machine, centrifugal pumps play an extremely important role in the national economy. However, the structure of its flow-passing parts is relatively complex, and there is dynamic and static interference between the rotating impeller and the stationary volute, so that the internal flow field of the centrifugal pump presents a three-dimensional unsteady turbulent flow when the centrifugal pump is running, accompanied by strong pulsation and noise. This will seriously affect the operating safety and service life of the system and equipment. For military equipment with high concealment performance, such as submarines, vibration and noise are problems that need to be solved urgently. [0003] The unsteady pressure pulsation in the centrifugal pump is considered to be the main factor of the induced vibr...

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Problems solved by technology

[0006] In order to solve the problem that the current centrifugal pump cannot effectively improve its flow rate and head, or make the performance curve after cutting not stable, the present invention proposes a method to reduce the vibration and noise of the internal flow field of the centrifugal pump, and at the same time, it can effectively Vibration-reducing and noise-reducing centrifugal pump with bionic structure to improve the flow rate and head of the centrifugal pump

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