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1. 发明专利

JPS54132445A BACKING SEAL METHOD FOR GROUTING HOLE 失效
公开(公告)号：JPS54132445A
公开(公告)日：1979-10-15
申请号：JP4185178
申请日：1978-04-05
申请人： HITACHI LTD
发明人： IWAMA TSUGIO , FURUBAYASHI KATSUMI , MATSUMOTO TERUO
IPC分类号： E04H7/18 , B23K9/00 , B23K31/00 , B23K37/06 , G21C13/00
摘要： PURPOSE:To carry out the grouting of the grout and the backing seal at good workability, by attaching the grouting pipe to the backing seal through the screw, and by detaching this grouting pipe after finishing the grouting of the grout, and then, by welding the sealing plate to the bottom liner plate. CONSTITUTION:The bottom liner plate 1 is laid, and the grout backing seal 2 is welded to the back face of the grouting hole for the grout. Next, the grouting pipe 4 is fitted to the screw of previously prepared backing seal 2. Then, after the grouting through the grouting pipe 4 is finished, the pipe 4 is detached; and the sealing plate 5 is welded to the bottom liner plate 1 so as to perfectly seal the grouting hole of the bottom liner plate 1.

2. 发明专利

JPS6055795B2 失效
公开(公告)号：JPS6055795B2
公开(公告)日：1985-12-06
申请号：JP14355377
申请日：1977-11-29
申请人： HITACHI LTD
发明人： FURUBAYASHI KATSUMI , ITAMI KUNIHIKO , KIDOI TAKASHI
IPC分类号： G21C7/14 , G01M3/04

3. 发明专利

JPS5476196A LIQUID METAL LEAKAGE DETECTING SYSTEM 失效
公开(公告)号：JPS5476196A
公开(公告)日：1979-06-18
申请号：JP14355377
申请日：1977-11-29
申请人： HITACHI LTD
发明人： FURUBAYASHI KATSUMI , ITAMI KUNIHIKO , KIDOI TAKASHI
IPC分类号： G21C7/14 , G01M3/04
摘要： PURPOSE:To make possible detection of minute leakage at high sensitivity by flowing an inert gas in te welded bellows of a control rod driving device, drawing out the liquid metal having leaked through the bellows in the state of aerosol to the outside of the apparatus thereby detecting the same. CONSTITUTION:A vent hole 18 is provided near the bottom end of an operating cylinder 8 and a helical tube 19 is connected in the hole opened in the moving plate 10 at the top end thereof. A lead-out tube 20 is installed through the fixifng plate 17 of the cylinder 3 and its bottom end communicates with an inner chamber 14. When with a control rod driving device CRD 23, an Ar gas is forcefed through the inlet 21 of the tube 19, it flows out through the vent hole 18 of the cylinder 8. This gas washes the inside surface of a welded bellows 6 and diffuses in the inner chamber 14. If at this time the liquid metal existing on the outside of the bellows 6 leaks and enters, fine particles of metal oxides are produced. These particles pass through the tube 20 and are discharged to the outside of the cylinder 3. Even a slight amount of leakage may be detected with the detector for metal liquid of high sensitivity connected to the end of the tube 20, thus heavy leakage may be prevented before it occurs.

4. 发明专利

JPS5935317B2 JPS5935317B2 - 失效
公开(公告)号：JPS5935317B2
公开(公告)日：1984-08-28
申请号：JP4185178
申请日：1978-04-05
申请人： Hitachi Ltd
发明人： IWAMA TSUGIO , FURUBAYASHI KATSUMI , MATSUMOTO TERUO
IPC分类号： E04H7/18 , B23K9/00 , B23K31/00 , B23K37/06 , G21C13/00
CPC分类号： Y02E30/40

5. 发明专利

JPS52156711A COLD TRAP 失效
公开(公告)号：JPS52156711A
公开(公告)日：1977-12-27
申请号：JP7322576
申请日：1976-06-23
申请人： HITACHI LTD
发明人： SEKI KATSUMI , FURUBAYASHI KATSUMI
IPC分类号： C22B26/10 , C22B9/02 , G21C15/00 , G21C19/313 , G21D1/00 , G21F9/06
摘要： PURPOSE:To lengthen the filter apparatus life apparatus life with preventing its mesh closing by the changing use of the paths having and having not the impurity filter in liquid Na cooling for deposition and removal of the contained impurities.

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