CFD (Computational Fluid Dynamics)-based modeling design method for nuclear main pump and designed million-kilowatt-grade nuclear main pump impeller

A design method and technology of the nuclear main pump, which are applied to the components, pumps, and pump components of the pumping device for elastic fluids, which can solve the problems of blank technology and no breakthrough in key technologies, and achieve a simple, efficient and feasible design process. control, resolve failures and blindness, and improve efficiency

Inactive Publication Date: 2011-10-05
DALIAN UNIV OF TECH
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Problems solved by technology

Shenyang Water Pump Co., Ltd. is the only domestic manufacturer capable of designing and manufacturing nuclear main pumps. However, there are still many key technologies that have not yet been broken through in the design and manufacture of nuclear main pumps for million-kilowatt nuclear power plants, and the technology is still blank.

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  • CFD (Computational Fluid Dynamics)-based modeling design method for nuclear main pump and designed million-kilowatt-grade nuclear main pump impeller
  • CFD (Computational Fluid Dynamics)-based modeling design method for nuclear main pump and designed million-kilowatt-grade nuclear main pump impeller
  • CFD (Computational Fluid Dynamics)-based modeling design method for nuclear main pump and designed million-kilowatt-grade nuclear main pump impeller

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Embodiment Construction

[0023] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0024] Step 1. The design parameters of the million-kilowatt class nuclear main pump designed by the present invention are as follows: temperature 340°C, pressure 17.1MPa, flow rate 17886m3 / h, head 111.3m, synchronous speed 1800rpm. The specific speed of the impeller is 427. In order to meet the requirements of similar specific speed, a mature mixed-flow pump impeller with a specific speed of 380 is selected as the initial model pump impeller, and the model pump impeller is optimized based on genetic algorithm. After optimization, its performance curve Smooth, wide high-efficiency zone, good anti-cavitation performance.

[0025] Step 2. Calculate the size conversion coefficient λ according to the traditional modular design formula ① 0 =1.044, with 1.044 as a reference, select three size coefficients λ within the ra...

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Abstract

The invention discloses a CFD (Computational Fluid Dynamics)-based modeling design method for a nuclear main pump and a designed million-kilowatt-grade nuclear main pump impeller, belonging to the technical fields of design and manufacture of pumps. The CFD-based modeling design method for the nuclear main pump is characterized by comprising four steps of: 1, selecting a model pump impeller satisfying similar conditions with a pre-designed pump impeller according to the design parameters of a million-kilowatt-grade nuclear main pump; 2, calculating size conversion coefficients by utilizing a conventional modeling design formula, and selecting 3-4 different size coefficients within a certain range to convert the model pump impeller; 3, carrying out numerical simulation respectively on the 3-4 pump impellers obtained in the step 2, and carrying out logarithm fitting on a relation between the size coefficients and delivery lift to obtain the nuclear main pump impeller meeting requirements; and 4, optimizing the nuclear main pump impeller obtained in the step 3 to complete the design. The invention has the advantages that the design problem of the high-temperature and high-pressure large-flow million-kilowatt-grade nuclear main pump is solved, and a design process is concise, efficient and controllable.

Description

technical field [0001] The invention belongs to the technical field of pump design and manufacture, and relates to a nuclear main pump impeller designed based on CFD numerical simulation modeling, which is applied to the nuclear main pump of the primary circuit of a million-kilowatt nuclear power plant to drive high-temperature, high-pressure, and large-flow radioactive coolant circulation. It is the only moving element in the nuclear island. Background technique [0002] In the pressurized water reactor nuclear power plant, the working medium water in the primary circuit is in direct contact with the nuclear reaction, absorbing and transferring a large amount of heat, making the working temperature and pressure of the working medium very high, the working flow is large, and it is also radioactive, so it matches with it The nuclear main pump that drives the coolant circulation has the characteristics of high temperature, high pressure and large flow rate, which is one of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22
Inventor 谢蓉王晓放单玉姣沈飞叶钟葛存飞
Owner DALIAN UNIV OF TECH
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