Evaluation method for comprehensive performance of a pump device water outlet runner

An evaluation method and comprehensive performance technology, which can be used in image data processing, special data processing applications, instruments, etc.

Active Publication Date: 2019-04-19
YANGZHOU UNIV
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Problems solved by technology

[0003] At present, in the preliminary design of the pumping station, the selection of the outlet flow channel is usually judged by the size of the hydraulic loss. Designers or scientific researchers often independently use the outlet flow channel as the calculation object to calculate the size of the hydraulic loss. This calculation method ignores the There are obvious technical defects in the comparison and selection of multiple schemes for judging the outlet flow channel base

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  • Evaluation method for comprehensive performance of a pump device water outlet runner
  • Evaluation method for comprehensive performance of a pump device water outlet runner
  • Evaluation method for comprehensive performance of a pump device water outlet runner

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Embodiment Construction

[0059] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0060] Such as figure 1 Shown is the flow chart of the comprehensive performance evaluation method of the outlet channel based on the pump device. The evaluation method includes the following steps:

[0061] (1) Construct the three-dimensional mathematical model of the pump device according to the initial design scheme of the pump device, and use the CFD (Computational Fluid Dynamics) method to calculate and solve the three-dimensional constant value of the pump device according to the design working conditions of the pump device. The poor convergence accuracy is lower than 1.0×10 -5 , and by monitoring the change of the head, when the change of the head tends to a constant value, that is, the numerical calculation under the design working condition meets the convergence requirement;

[0062] (2) According to the calculation results of the ...

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Abstract

The invention discloses an evaluation method for comprehensive performance of a pump device water outlet runner. According to the method, based on a CFD three-dimensional constant numerical calculation result of a pump device, sub-item evaluation indexes of five hydraulic performances of a water flow channel are determined, and according to an initial setting scheme of a water outlet flow channel,sub-item evaluation indexes of four structures based on three-dimensional design of the water outlet flow channel of the pump device are determined; And converting the determined 9 sub-item evaluation indexes of the water outlet flow channel to obtain an objective function of the comprehensive performance of the water outlet flow channel, thereby obtaining the evaluation grade of the comprehensive performance of the water outlet flow channel. The defect that only the hydraulic performance of the pump station water outlet flow channel is evaluated in the prior art is overcome, the optimal selection of the water outlet flow channel in the initial setting stage of the pump station is facilitated, the energy consumption of the pump station can be further reduced, and the purposes of energy conservation and consumption reduction are achieved.

Description

technical field [0001] The invention relates to the field of pumping station design, in particular to a method for evaluating the comprehensive performance of a water outlet channel of a pumping device. Background technique [0002] The water outlet channel is an important water outlet structure of the low-lift pumping station. It is a connecting channel connecting the outlet of the pump guide vane body and the outlet pool. Its main function is to diffuse the relatively high-speed water flow at the outlet of the guide vane body and recover rotational kinetic energy; The hydraulic performance of the pump directly affects the energy efficiency of the low-head pump device. The lower the head of the pump device, the greater the impact of the outlet channel on the energy performance of the pump device. [0003] At present, in the preliminary design of the pumping station, the selection of the outlet flow channel is usually judged by the size of the hydraulic loss. Designers or sc...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
CPCG06F30/17G06T17/00
Inventor 杨帆胡文竹高慧刘超施伟钱军黄璐陈晔王铁力张海军
Owner YANGZHOU UNIV
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