Guide vane optimized design method capable of prolonging running down time of reactor coolant pump

A technology of idle time, optimized design, applied in the direction of components, pumps, pump elements, etc. of pumping devices for elastic fluids, which can solve problems such as lack of rigor and comprehensiveness

CN106015102AInactive Publication Date: 2016-10-12JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-10-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a guide vane optimized design method capable of prolonging running down time of a reactor coolant pump. According to the guide vane optimized design method, firstly, a main objective function for improving running efficiency under running down by optimizing main parameters of a radial guide vane is established; then the main parameters are divided into three groups of subordinate design variables, subordinate objective functions are optimized respectively with running down efficiency, optimized solution is performed under initial constraint conditions, and the optimum points of the performance of the parameters are obtained; and the optimum points serve as centers for determination of new constraint conditions, optimized solution is performed on the main objective function under the new constraint conditions, and the final optimized result is obtained. By means of the design of the radial guide vane of the reactor coolant pump, the problems of lower efficiency and production of secondary backflow in a running down process can be improved, the running down time is prolonged, sufficient flow passes through to cool a reactor core, and the nuclear safety is enhanced. With application of step-by-step optimization design method adopting a subordinate objective constraint random direction searching method for reduction of a constraint range and a main objective exterior penalty function method for search of the optimum points, the effectiveness of the optimized result is guaranteed, and the optimization speed is increased.
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Description

technical field

[0001] The invention relates to the field of idling working condition analysis and guide vane optimization design of a nuclear main pump, and specifically relates to a design method for step-by-step optimization of pump guide vane parameters by adopting a modern mechanical optimization design method. Background technique

[0002] With the accelerated development of the economy, the problems of excessive resource consumption and energy shortage have become more and more prominent. As a safe, economical and clean energy with mature technology and large-scale production, nuclear power will have a lot of room for development in my country's long-term planning. The full name of the nuclear main pump is the nuclear reactor coolant main circulation pump. Its function is to drive the highly radioactive high-temperature and high-pressure water cycle in the nuclear island, transfer the heat energy of the fission of the reactor core to the steam generator to generate st...

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Embodiment Construction

[0085] The present invention will be further described below in conjunction with the accompanying drawings and specific technical solutions.

[0086] A kind of optimal design method of the guide vane prolonging the idling time of the nuclear main pump, which includes constructing a guide vane that can be optimized by optimizing the main parameters of the guide vane (the base circle diameter of the guide vane D 3 , Guide vane inlet width b 3 , preselected wrap angle Guide vane blade number Z, guide vane inlet placement angle α 3 , Guide vane throat area F) to improve the main objective function of idle efficiency, the specific process is:

[0087] Take the design variables as: The main objective function constructed is:

[0088]

[0089] In the formula, D 3 - The diameter of the base circle of the guide vane, in meters;

[0090] b 3 -Guide vane inlet width, in meters;

[0091] - Preselected wrap angle, unit degree;

[0092] Z - the number of guide vane blades; ...