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Multiple operating condition design method of centrifugal charging pump guide vane of nuclear power station

A design method and centrifugal technology, applied in the direction of non-variable-capacity pumps, pumps, pump components, etc., can solve problems such as difficult design of hydraulic components

Active Publication Date: 2015-07-15
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the top-charging pump is required to work at multiple flow operating points, and its span range is far beyond the range of general centrifugal pumps, especially the small flow requires no hump, which makes the design of hydraulic components very difficult

Method used

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  • Multiple operating condition design method of centrifugal charging pump guide vane of nuclear power station
  • Multiple operating condition design method of centrifugal charging pump guide vane of nuclear power station
  • Multiple operating condition design method of centrifugal charging pump guide vane of nuclear power station

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Embodiment Construction

[0042] figure 1 and figure 2 Together determine the vane shape of this embodiment. The present invention adjusts the guide vane base circle diameter D through the following relations 3 (1) Height of guide vane throat a 3 (2), guide vane outlet height a 4 (3), guide vane inlet placement angle (4), guide vane outlet diameter D 4 (5), anti-guide vane inlet diameter D 5 (6), anti-guide vane outlet diameter D 6 (7), guide vane inlet width b 3 (8), guide vane outlet width b 4 (9) and anti-guide vane inlet width b 5 (10), make the performance of the charging pump of this embodiment satisfy the flow Q of the optimal efficiency working condition BEP , the head H of the optimal efficiency condition BEP , flow Q i , The head H of the i-th operating point obtained by the traditional design method i ', impeller speed n requirements.

[0043] H i ′ = H BEP [...

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Abstract

The invention provides a design method of a centrifugal charging pump guide vane of a nuclear power station. The method can meet the requirement of multiple operating points. The method is characterized in that when the charging pump guide vane is designed, geometric parameters of the guide vane and performance parameters of different operating points are associated together, so that an actual operating performance curve of a charging pump is consistent with a required performance curve of the charging pump, thus achieving the effect that the design performance curve is consistent with the required performance curve. The guide vane designed by adopting the method has the beneficial effect that the geometric parameters of the guide vane can be adjusted, thus achieving the aim that the performance of the charging pump meets the requirement of the multiple operating points. The design method can ensure the consistency between the actual operating performance curve of the charging pump and the required performance curve of the charging pump, and is particularly applicable to designs of the charging pump guide vanes having the strict requirement on the multiple operating points.

Description

technical field [0001] The invention relates to a multi-working-condition design method for the guide vane of a centrifugal upper charging pump in a nuclear power plant, which can be used when designing the guide vane in the low specific speed working condition of the centrifugal pump, and can also be used in designing the guide vane in the high specific speed working condition of the centrifugal pump. It is especially suitable for the situation where the performance parameters of centrifugal pumps with multiple operating points are strictly required. Background technique [0002] At present, all the centrifugal top-charge pumps of domestic million-kilowatt nuclear power plants rely on imports, and hydraulic design is a key factor restricting the localization of top-charge pumps. The top-charging pump requires many working conditions, a large flow range span, high total pressure head of the pump, and small working flow, which brings great challenges to the hydraulic design o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/24
Inventor 付强袁寿其朱荣生王秀礼蒋旭松
Owner JIANGSU UNIV
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