发明名称 |
STRUCTURE FOR SUPPRESSING FLOW VIBRATION OF INSTRUMENTATION GUIDE TUBE |
摘要 |
<p>An upper hole 37A and a lower hole 37B are provided at two positions, namely, upper and lower portions, of a side surface of a guide tube 27, and a thimble tube 22 is pressed against an inner circumferential surface of the guide tube 27, by a differential pressure between coolant inside and outside the upper hole 37A and the lower hole 37B. It is preferable that an upper pressure adjustment hole and a lower pressure adjustment hole are provided at two positions, namely, upper and lower portions, of a side surface of an upper core support column 21, and a coolant flowing into the guide tube from an upper end of the guide tube flows out to the outside from inside the guide tube through a gap between the thimble tube and the upper hole, and also flows out to the outside from inside the upper core support column through the upper pressure adjustment hole, and a coolant flowing into the guide tube from a lower end of the guide tube flows out to the outside from inside the guide tube through a gap between the thimble tube and the lower hole, and also flows out to the outside from inside the upper core support column through the lower pressure adjustment hole.</p> |
申请公布号 |
EP2128870(A1) |
申请公布日期 |
2009.12.02 |
申请号 |
EP20080711857 |
申请日期 |
2008.02.22 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
UDA, NOBUKI;WATANABE, SHIGEYUKI;HIROTA, KAZUO;SAKATA, HIDEYUKI;MORITA, HIDEYUKI;NAKAJIMA, MAKOTO;KURIMURA, CHIKARA;ICHIKAWA,TOSHIO |
分类号 |
G21C17/10;G21C3/322;G21C17/08 |
主分类号 |
G21C17/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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