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Nuclear main pump maximum flow hydraulic design method

A technology of hydraulic design and nuclear main pump, applied in the direction of pumps, pump components, mechanical equipment, etc., can solve the problems of deviation of design results, low performance and reliability of nuclear main pump, etc.

Active Publication Date: 2014-04-23
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is not suitable for designers with little experience, and there will be large deviations in the design results. It has not considered the great efficiency of the nuclear main pump under loss of water accidents, resulting in low performance and reliability of the nuclear main pump.

Method used

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  • Nuclear main pump maximum flow hydraulic design method

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Embodiment Construction

[0070] figure 1 and figure 2 The shape of the impeller of this embodiment is determined jointly, which is a mixed-flow impeller. It is mainly determined by the impeller inlet diameter , impeller outer diameter , the impeller outlet width , front cover (1), blade (2), rear cover (3), shaft hole (4), blade outlet placement angle , and blade wrap angle Ψ composition. The present invention utilizes the following relational formulas to determine the main geometric parameters of the impeller, mainly comprising: the outer diameter of the impeller , blade exit edge width , blade outlet placement angle . The relationship is as follows:

[0071] ;

[0072] ;

[0073] ;

[0074] ;

[0075] ;

[0076] In the figure, , it was found through experiments that β 2 Generally take 20°~35°.

[0077] The above is a specific description of the present invention with reference to the embodiments, but the present invention is not limited to the above embodiment...

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Abstract

The invention provides a nuclear main pump maximum flow hydraulic design method and particularly relates to a maximum efficiency design method for the nuclear main pump under the accident of loss of coolant. Main geometrical parameters of an impeller are confirmed according to the following relational expressions which mainly comprise an impeller outlet placing angle, the impeller outlet width, the impeller outlet diameter, an eighth section and the like. The impeller designed through the nuclear main pump maximum flow hydraulic design method not only improves the flow condition inside the impeller and meanwhile improves the nuclear main pump performance and the operational reliability.

Description

technical field [0001] The invention relates to a hydraulic design method for a nuclear main pump with a maximum flow rate, in particular to a design method for a nuclear main pump with a maximum efficiency under a water loss accident. Background technique [0002] The reactor coolant circulation pump of the primary circuit of the nuclear power plant is referred to as the nuclear main pump. It is an important part of the reactor cooling system (RCP) and an important part of the pressure boundary of the primary circuit of the nuclear island reactor. It belongs to nuclear safety level I equipment. The nuclear reactor coolant pump has the characteristics of large flow, high lift, and high anti-cavitation requirements during operation. At the same time, it must meet safety requirements such as thermal shock and earthquake resistance, and its design technology is difficult. Especially in the case of loss of water accidents, it is guaranteed that the flow rate is not far from the ...

Claims

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Application Information

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IPC IPC(8): F04D29/22F04D29/24
Inventor 付强朱荣生王秀礼
Owner JIANGSU UNIV
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