A hydraulic optimization design method for nuclear power pump annular pressurized water chamber based on entropy production analysis

A ring-shaped pressurized water chamber and hydraulic optimization technology, which is applied in design optimization/simulation, calculation, electrical digital data processing, etc., can solve problems such as difficult quantitative determination of design parameters, and achieve the effect of improving hydraulic efficiency and ensuring operation safety

Active Publication Date: 2019-05-31
JIANGSU UNIV
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Problems solved by technology

This method is more empirical, and it is difficult to quantitatively determine the design parameters

Method used

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  • A hydraulic optimization design method for nuclear power pump annular pressurized water chamber based on entropy production analysis
  • A hydraulic optimization design method for nuclear power pump annular pressurized water chamber based on entropy production analysis
  • A hydraulic optimization design method for nuclear power pump annular pressurized water chamber based on entropy production analysis

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Embodiment

[0069] Embodiment: Taking a certain type of nuclear power pump as an example, the flow rate of the pump is Q=21642m 3 / h, head H=111.3m, impeller outlet width b 2 =200mm, impeller outlet diameter D 2 =800mm. In this implementation case, only the diameter 1 of the base circle of the pressurized water chamber is selected as D 5 , the shrinkage angle 2 of the inlet section is α, the divergence angle 3 of the outlet section is β, and the inlet width 4 of the pressurized water chamber is b 5 As design variables, the design ranges are [1120mm, 1600mm], [0°, 20°], [5°, 30°], [260mm, 800mm], and the height 5 of the straight section of the pressurized water chamber flow section is h= 373mm, the height of the flow section of the pressurized water chamber 6 is H 1 =600mm, the radius 7 of the circular arc section of the pressurized water chamber flow section is r=830mm. Using the optimal Latin hypercube design method, the following 20 groups of schemes are designed, as shown in the t...

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Abstract

The invention discloses a hydraulic optimization design method of an annular water-compressing chamber of a nuclear power pump based on entropy generation analysis. The hydraulic optimization design method comprises the following steps: selecting design parameters of the annular water-compressing chamber for nuclear power according to impeller parameters and performance requirements, and carrying out initial calculation on a design range of design parameters of the water-compressing chamber; carrying out multi-scheme design on the annular water-compressing chamber by adopting a testing design method; carrying out three-dimensional modeling, mesh dividing and numerical simulation; applying the entropy generation analysis to obtain entropy generation loss of the annular water-compressing chamber; and establishing a function relation between the design parameters and the entropy generation loss by adopting an approximate model and solving the function by applying an optimization algorithm to minimize the entropy generation loss, so as to obtain optimal design parameters of the annular water-compressing chamber. With the adoption of the hydraulic optimization design method, the hydraulic efficiency of the annular water-compressing chamber is effectively improved; and the sphere-like water-compressing chamber is adopted and safe operation is guaranteed.

Description

technical field [0001] The invention relates to the field of hydraulic optimization design of a pump pressurized water chamber, in particular to an optimal design method for an annular pressurized water chamber of a nuclear power pump based on entropy production analysis. Background technique [0002] Nuclear power is a relatively mature clean energy that can be developed on a large scale and provide stable power output. In nuclear power plants, whether it is a primary circuit, a secondary circuit or supporting systems, pumps are very important equipment. Due to the extremely stringent safety requirements of nuclear power pumps, the pressurized water chamber is generally designed in a ring shape to meet the high temperature and high pressure requirements. Compared with the spiral volute, the hydraulic efficiency of the annular pressurized water chamber is lower. The main functions of the annular pressurized water chamber are: 1. Safety protection, preventing high temperatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20
Inventor 裴吉顾延东袁寿其司乔瑞王文杰
Owner JIANGSU UNIV
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