Essential service water intake structure with bypass used for nuclear power station
A technology for important factory water and nuclear power plants, applied to drinking water installations, buildings, pumping stations, etc., to avoid unreliability
Active Publication Date: 2017-12-19
CHINA NUCLEAR POWER ENG CO LTD
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Problems solved by technology
[0003] Aiming at the blockage problem caused by the dirt in the seawater, the solution of the present invention is to install a water intake structure at the exit of the water intake tunnel
Method used
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[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0024] like figure 1 As shown, the present invention provides an important plant water intake structure with a bypass for nuclear power plants (hereinafter referred to as the water intake structure), which is used to filter the seawater introduced in the water intake culvert 1 of the nuclear power plant and import the filtered seawater The important factory water inlet tunnel 7 and the circulating cooling water inlet tunnel 8 of the nuclear power plant, including the filter area 2, the water distribution well 3, the bypass channel 4, the filter screen 5, the water pump 6 and the valve 9, etc. (the gate 9 is used for equipment maintenance Disconnect the communication of each equipment when disconnecting, for example, use when overhauling such as filter screen 5, each tunnel; In the present embodiment, gate 9 is a steel gate).
[0025] in,
[0026] The ...
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The invention belongs to the technical field of nuclear power station cooling water, and specifically relates to an essential service water intake structure with a bypass used for a nuclear power station. The essential service water intake structure is used to filter seawater which is guided in from an intake culvert of a nuclear power station, and leads the filtered seawater into an essential service water intake tunnel and a circulating cooling water intake tunnel of the nuclear power station. The essential service water intake structure comprises a filter region whose upstream is connected a water intake culvert and downstream is connected with a distribution well, and also comprises a distribution well whose upstream is connected with the filter region and downstream is connected with the essential service water intake tunnel and the circulating cooling water intake tunnel, and also comprises bypass flow channels whose upstream is connected with the water intake tunnels in front of the filter region, and downstream is connected with the distribution wells. The bypass flow channel can ensure water supply volume entering the essential service water intake tunnels under the condition that the filter region stops working. The intake structure can effectively filter pollutants in seawater, prevents a cooling water pump cannot be normally operated caused by blocking of seawater pollutants, and can provide reliable guarantee for an essential service water system in accident conditions.
Description
technical field [0001] The invention belongs to the technical field of nuclear power plant cooling water, and in particular relates to an important plant water intake structure with bypass for nuclear power plants. Background technique [0002] At present, most of the nuclear power plants in China are installed by the sea, such as Tianwan Nuclear Power Plant, which imports seawater as the cooling water of the nuclear power plant. However, there is a lot of dirt such as seaweed in the seawater, and the decontamination effect of the decontamination machine is poor. In severe cases, these dirt can block the cooling water pump. The rotating filter screen in the room causes the water level in the suction chamber of the cooling water pump to drop, which affects the normal operation of the cooling water pump. Since the civil engineering part of the structure at the water inlet of the water intake tunnel used by the nuclear power plant for introducing seawater has been completed, it...
Claims
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IPC IPC(8): E03B3/04E03B5/00E03B7/07
CPCE03B3/04E03B5/00E03B7/07E03B7/074
Inventor 武婕白玮王芳张荣勇
Owner CHINA NUCLEAR POWER ENG CO LTD