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A third-generation nuclear power plant containment pit filtration system

A nuclear power plant containment and filtering system technology, which is applied in the field of the third-generation nuclear power plant containment pit filtering system, can solve the problems of difficult installation of the filter screen, expensive manufacturing and installation costs, etc., so as to improve the earthquake resistance, ensure normal operation, and ensure safe operation. Effect

Active Publication Date: 2016-04-20
SHANGHAI POWER EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, larger screens are also difficult to install due to reactor site constraints, and are more expensive to manufacture and install

Method used

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  • A third-generation nuclear power plant containment pit filtration system
  • A third-generation nuclear power plant containment pit filtration system
  • A third-generation nuclear power plant containment pit filtration system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as Figure 4 As shown, it is a view of the first third-generation nuclear power plant containment pit filtration system. The third-generation nuclear power plant containment pit filtration system includes two filter modules, and there are two filter modules arranged side by side. The fluid outlet end of the mesh module is provided with a confluence groove 30 . In this filter screen system, the fluid pressure at the filter screen recess 15 is greater than the pressure at the filter screen module rear end 13, so the fluid is continuously filtered from the filter screen recess 15 and then flows to the filter screen module rear end 13, and then from the filter screen module rear end 13. The rear end 13 of the screen module flows to the confluence tank 30, and the fluid in the confluence tank 30 flows to the safety injection system through the pipeline or is pumped away.

[0025] Such as image 3 As shown, it is a front view of the filter screen module, and the filter...

Embodiment 2

[0028] Such as Figure 5 As shown, it is a view of the second third-generation nuclear power plant containment pit filtration system. The third-generation nuclear power plant containment pit filtration system includes two groups of filter modules, and each group contains two side-by-side arrangements identical to those in Embodiment 1. The filter screen module, two sets of filter screen modules are set back to back, the fluid outlet end is located in the middle of the two sets of filter screen modules, and the fluid outlet end of the filter screen module is provided with a confluence groove. The fluid enters from the inlet of the filter screen module, and the filtered fluid is collected into the fluid tank to flow elsewhere by gravity or be pumped away. In the filter system, 4 filter modules are used in pairs, 2 of which are respectively arranged side by side, and the 2 groups of filter modules are oriented to be separated by the confluence groove 30 and in a back-to-back rela...

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Abstract

The invention provides a high-efficient third-generation nuclear power station containment pit filter system, which is characterized by comprising at least one filter net module which comprises a filter net support and a foldable filter net unit which is arranged on the filter net support, wherein the foldable filter net unit comprises an inner filter net and an outer filter net, the inner filter net is arranged in the outer filter net, a filter net entrance is formed in the front end of the outer filter net, and the tail end of the outer filter net is fixedly connected with the tail end of the inner filter net. By virtue of the foldable structure, the thickness of the filter module is reduced while the filter area is increased, so that the filter efficiency is improved while the size of the filter system is reduced, and moreover, the shock resistance of the filter system can be improved. The normal running of a safety injection system and a cooling system of a third-generation nuclear power station can be guaranteed, and the safety running of the nuclear power station can be guaranteed.

Description

technical field [0001] The invention relates to a safety system applicable to third-generation nuclear power plants, in particular to a containment pit filtering system for third-generation nuclear power plants. The filter system of the present invention is formed by a filter module composed of a "folded" folded filter unit. The "folded" folded filter unit not only increases the effective filtering area, but also reduces the size of the filter system. The volume can improve the anti-seismic performance of the filtration system, improve the filtration efficiency and flow. Background technique [0002] Nuclear island accidents at nuclear power plants typically require the use of emergency core cooling systems that circulate large volumes of coolant to critical reactor areas in the event of an accident. After a basic accident in a nuclear power plant, such as a loss of coolant accident (LOCA) or a main steam pipe rupture accident (MSLB), the coolant enters the containment pit ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D29/07B01D29/52G21C15/00G21C9/00
CPCY02E30/30
Inventor 景东明黄定忠耿远俞高伟窦冬梅谭子雄金波
Owner SHANGHAI POWER EQUIP RES INST
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