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Submerged weir arranging method

A technology for cofferdams and water intakes, applied in barrage/weirs, water conservancy projects, sea area projects, etc., can solve problems affecting temperature, surrounding environment impact, and affecting the safety performance of nuclear power plants, so as to save costs and reduce impacts

Inactive Publication Date: 2012-01-11
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, high-temperature seawater will affect the temperature of the seawater obtained by the water intake 2, thereby affecting the safety performance of the nuclear power plant. On the other hand, the increase in seawater temperature in a large area will cause a devastating blow to the surrounding environment, and the original ecosystem may be completely changed.

Method used

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Embodiment Construction

[0011] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0012] as attached figure 1 As shown, a submerged weir setting method is to set a cofferdam 4 between the water intake 2 and the outfall 3 of the coastline 1, and the cofferdam 4 surrounds most of the sea area of ​​the outfall 3, and only in the direction away from the water intake 2 Opening, the height of the cofferdam 4 is the local average tidal height.

[0013] The scope of above-mentioned cofferdam 4 openings is according to drainage water volume, and half is outlet flow velocity 0.5m / s (under the average tidal level).

[0014] The above-mentioned average tide height can be calculated by those skilled in the art according to the prior art, and the results of the average tide height for different sea areas are not the same.

[0015] After using the cofferdam 4 with the average tidal height, the cofferdam 4 can prevent the high-temperature water discharged from ...

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Abstract

The invention belongs to a cofferdam construction method, and particularly relates to a submerged weir arranging method. In the submerged weir arranging method, a cofferdam is arranged between a water intake and a water spout of a coast line, and surrounds most of the sea area of the water spout, and an opening is arranged at the direction far away from the water spout. The submerged weir arranging method is characterized in that: the height of the cofferdam is the local mean sea level height. The invention has the obvious benefits that: the cofferdam with the mean sea level height is adopted, not only is the cofferdam construction cost is saved, but also the influence on the surrounding environment is reduced, and meanwhile, a thought which is different from the former cofferdam construction method is also provided.

Description

technical field [0001] The invention belongs to a cofferdam manufacturing method, in particular to a submerged weir setting method. Background technique [0002] Domestic coastal nuclear power plants all adopt the once-through seawater cooling method, because the temperature of seawater rises after passing through the condenser of the generating set, and there are two main issues to be considered when it is discharged into the sea. The water temperature has too much impact, otherwise the temperature of the water intake will rise too much due to the influence of warm drainage, which will affect the efficiency of power station operation. The other is to consider the impact of environmental protection. The impact of warm drainage on seawater temperature will change the living environment of marine organisms , resulting in ecological deterioration of some temperature-sensitive marine organisms, such as some species of corals, larvae, etc., so the area affected by temperature and...

Claims

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Application Information

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IPC IPC(8): E02B7/16
Inventor 王东海白玮吕志锋候树强顾磊
Owner CHINA NUCLEAR POWER ENG CO LTD
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