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Influence of Pump Case on Nuclear First Loop Coolant Pump Performance

Author: ZhangDongJun
Tutor: XuShiMing
School: Dalian University of Technology
Course: Refrigeration and Cryogenic Engineering
Keywords: Nuclear main pump Pump casing Numerical Simulation Performance
CLC: TH38
Type: Master's thesis
Year: 2010
Downloads: 241
Quote: 0
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Abstract


With the energy crisis intensifies, environmental issues have become increasingly prominent , the development of nuclear power has become a trend. Nuclear Nuclear Power Plant main pump is the core of a loop system for the safe operation of nuclear reactors plays a vital role . At present, China has introduced AP1000 units , appropriate technical support , digestion, localization also be included in the long-term development of nuclear power agenda. This article briefly describes the main characteristics of the pump AP1000 nuclear ; summarizes the research status of nuclear main pump and mixed flow pump research ; explores the CFD and CFD analysis of the basic profiles and turbomachinery flow field analysis method . Based on the AP1000 nuclear main pump design parameters , the use of a pump has matured a one-dimensional design theory , independent design a nuclear main pump , the design of the impeller and guide vane and the different types of pump housing ; using the PRO-E three-dimensional modeling and assembly ; application pre -processing software FLUENT GAMBIT mesh ; through FLUENT to simulate the operation . Pressurized water chamber with different diffusion tube locations, different spherical pressurized water chamber cross-sectional shapes , different shapes pressurized water chamber diffusion tubes were nuclear main pump CFD analysis ; got pump total pressure, static pressure , velocity vector distribution , streaming line graph ; analysis of nuclear main pump flow field characteristics ; were drawn up and the whole impeller pump performance curve . The results show that the nuclear side of the main pump diffuser design is superior in the middle of the design ; pressurized water chamber cross-sectional shape of the nuclear properties of the main pump has little effect ; against diffusion tube center is located on the axis of the situation in the same flow conditions frustum -shaped diffuser than the cylindrical diffuser has better flow characteristics ; other structural parameters of the main pump in the same conditions , frustum -shaped diffuser pipe taper in the range 0.4 to 0.65 of nuclear main pump has better performance parameters.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Pump > A variety of purposes
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