Floating reactor safety injection system for improving reliability of closed pipe section
A closed-tube, reliable technology, used in climate sustainability, sealing, reactors, etc., can solve problems such as pipeline rupture, increased crack depth and scope, water loss accidents, etc., to avoid cracks, reduce hull weight, save energy The effect of space on board
Pending Publication Date: 2022-04-15
NO 719 RES INST CHINA SHIPBUILDING IND
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Problems solved by technology
Once fatigue damage and cracks occur in the closed pipe section, the depth and scope of the crack will continue to increase, which may eventually cause the pipe to rupture and lead to a loss of water accident in the primary circuit
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[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.
[0027] The floating reactor safety injection system for improving the reliability of the closed pipe section in the embodiment of the present invention includes a reactor compartment 18, in which a safety injection system main body and a reactor coolant system are arranged. see figure 1 As shown, the reactor coolant system includes 2 c...
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The invention discloses a floating reactor safety injection system for improving the reliability of a closed pipe section, and relates to the technical field of special safety facilities for floating reactors. Comprising main pipeline heat pipe sections and main pipeline cold pipe sections, each main pipeline heat pipe section is provided with a heat isolation valve, and each main pipeline cold pipe section is provided with a cold isolation valve; all the thermal isolation valves and the cold isolation valves are connected with an electric isolation valve of the safety injection system through the same safety injection system isolation valve; a first pneumatic isolating valve is arranged on the 1 # closed pipe section, and a second pneumatic isolating valve is arranged on the 2 # closed pipe section; and the first pneumatic isolating valve and the second pneumatic isolating valve are communicated in the same pressure relief box. When the isolation valve of the 1 # closed pipeline and / or the 2 # closed pipeline leaks, pressure relief can be conducted on the closed pipe section in time, cracks caused by fatigue damage of the closed pipe section are avoided, the reliability of the closed pipe section is remarkably improved, and radioactive media can be collected and treated in a unified mode.
Description
technical field [0001] The invention relates to the technical field of special safety facilities for floating reactors, in particular to a safety injection system for floating reactors that improves the reliability of closed pipe sections. Background technique [0002] At present, according to feedback from the operation experience of land-based nuclear power plants, it is found that low-temperature water accidentally enters the primary circuit from the high-pressure safety injection pipeline, causing thermal fatigue cracks and leakage in the pipe section between the check valve and the main pipeline of the reactor coolant system. The reason for this phenomenon is that the isolation valve of the high-pressure safety injection circuit leaks, causing cold water to enter the primary circuit, and the cold and hot water are mixed on the pipeline downstream of the check valve of the reactor coolant system, resulting in thermal fatigue cracks on the pipe wall. The operating experie...
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IPC IPC(8): G21C15/12G21C13/028
CPCY02E30/30
Inventor 雷斌刘建阁许怀锦方圆孙福江杜孟孟
Owner NO 719 RES INST CHINA SHIPBUILDING IND