Coaming type water collection structure suitable for super-critical water-cooled reactor
A water-cooled reactor and supercritical technology, applied in the field of reactor internals, can solve the problems of supercritical water-cooled reactors, such as high operating pressure and temperature, limited space in the lower chamber, and affecting structural reliability, so as to improve structural stability and reliability , Simple and compact structure, practical, safe and reliable
Active Publication Date: 2013-06-05
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology
The operating pressure and temperature of supercritical water-cooled reactor are high, the structure is complex, the space of the lower chamber is limited, and the flow-induced vibration affects the reliability of the structure. How to design a flow-collecting structure in the lower chamber of supercritical water-cooled reactor to realize the flow-collection of coolant and distribution, and to ensure the stability of the flow collection structure, which has become a common concern of the people
Method used
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[0017] like figure 1 As shown, a shroud-type collector structure suitable for supercritical water-cooled reactors includes shroud 3, shroud 6, circular core lower plate 1 and hollow semi-ellipsoidal lower shell 7, wherein the core The lower plate 1 is arranged in the shroud 3 and the annular side wall of the core lower plate 1 is connected with the inner wall of the shroud 3 . The coaming plate 6 is connected to the lower end surface of the core lower plate 1, and the coaming plate 6 separates the inner area of the shroud 3 to form a central first process area and a peripheral two process area, wherein the central first process area is the area inside the coaming plate 6, and the peripheral two process areas The area is the area between the shroud 3 and the shroud 6 . The lower core plate 1 is provided with several water flow holes connected to the central first process area and several water inlet holes connected to the peripheral second process area. Both the water flow h...
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The invention discloses a coaming type water collection structure suitable for a super-critical water-cooled reactor. The coaming type water collection structure comprises wrappers (3) and lower core plates (1), wherein the lower core plates (1) are arranged in the wrappers (3) and connected with the wrappers (3), a coaming (6) is arranged on the lower end face of each lower core plate (1), the coamings (6) divide the area in the wrappers (3) so as to form a central first flow area in the coamings (6) and a periphery second flow area between the wrappers (3) and the coamings (6), a plurality of drain holes and a plurality of water inlet holes are formed in the lower core plates (1), wherein the drain holes are communicated with the central first flow area and the water inlet holes are communicated with the periphery second flow area. The whole of the coaming type water collection structure is simple and compact in structure, small in size, capable of improving stability of the structure and achieving the scheme of two flow areas of the super-critical water-cooled reactor.
Description
technical field [0001] The invention relates to an internal component of a supercritical water-cooled reactor, in particular to a shroud-type current collecting structure suitable for a supercritical water-cooled reactor. Background technique [0002] At present, the second-generation, second-generation improved, and third-generation pressurized water reactors at home and abroad are all coolant-process structures, with simple processes and relatively easy structure realization. In order to achieve the mixing and initial distribution of the coolant in the lower chamber, the third-generation nuclear power reactors represented by AP1000 and EPR are equipped with flow distribution devices. The operating pressure and temperature of supercritical water-cooled reactor are high, the structure is complex, the space of the lower chamber is limited, and the flow-induced vibration affects the reliability of the structure. How to design a flow-collecting structure in the lower chamber of...
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Login to View More IPC IPC(8): G21C15/02
CPCY02E30/40Y02E30/30
Inventor 刘晓郝维明范恒周禹杜华李浩张宏亮王庆田饶琦琦慕殿鹏
Owner NUCLEAR POWER INSTITUTE OF CHINA