Method for determining cutting output of centrifugal pump cutting impeller

Abstract

The invention relates to the field of centrifugal pump cutting impeller cutting output, and discloses a method for determining the centrifugal pump cutting impeller cutting output. The method comprises the following steps: S1, determining initial geometric parameters; s2, estimating cutting output parameters of the impeller, and determining rotating speed parameters of the centrifugal pump; s3, impeller backup and machining equipment debugging are carried out; s4, designing an impeller cutting scheme; s5, cutting for and testing the sample for multiple times; s6, establishing a function to obtain an optimal cutting interval, and carrying out detail testing; and s7, comparing multiple sets of test data to determine the optimal cutting output.The impeller of the centrifugal pump is cut, so that energy consumption is reduced, and the problem of heating of a pump body and a pipeline is effectively solved. According to the method, a test design method is adopted, various different cutting schemes are arranged, and function establishment analysis is carried out on cutting data of the different schemes.

Description

technical field [0001] The invention relates to the field of the cutting amount of a centrifugal pump cutting impeller, in particular to a method for determining the cutting amount of a centrifugal pump cutting impeller. Background technique [0002] Centrifugal pumps work by rotating the impeller to cause the liquid to undergo centrifugal motion. Before the liquid is started, the pump casing and pipe must be filled with liquid, and then the motor is started to drive the pump shaft to drive the impeller and the liquid to perform high-speed rotational motion, resulting in centrifugal motion. It is thrown towards the outer edge of the impeller and flows into the pipeline of the pump through the flow channel of the volute pump casing. [0003] The basic structure of a centrifugal pump is composed of six parts: the impeller, the pump body, the pump shaft, the bearing, the sealing ring, and the stuffing box. The impeller is the core part of the centrifugal pump. For the main fun...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for determining the cutting amount of the centrifugal pump cutting impeller, so as to solve the problem in the prior art that adjusting the opening of the outlet valve to adjust the operating conditions will cause the pipeline to generate heat and waste energy.

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