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2. 发明专利

JP5507535B2 Guide tube 有权
公开(公告)号：JP5507535B2
公开(公告)日：2014-05-28
申请号：JP2011267868
申请日：2011-12-07
申请人：コンパニー・ユーロペアンヌ・デュ・ジルコニウム−セジュ
发明人：ジャン・ドリヨン , ジャン−リュック・オバン
IPC分类号： G21C3/326 , B21B15/00 , B21B21/00 , B21B25/00 , G21C7/20 , G21C21/00
CPC分类号： B21B21/005 , B21B25/00 , B21B2015/0014 , G21C7/20 , G21C21/00 , G21Y2002/204 , G21Y2002/206 , G21Y2002/303 , G21Y2004/30 , G21Y2004/501 , Y02E30/39

3. 发明专利

JP4210108B2 Method of inserting the control rod to the control rod drive and the reactor core of a nuclear reactor 有权
公开(公告)号：JP4210108B2
公开(公告)日：2009-01-14
申请号：JP2002361214
申请日：2002-12-12
申请人：アレヴァエンペーゲゼルシャフトミットベシュレンクテルハフツング
发明人：ヴィンターマンベネディクト
IPC分类号： G21C7/16 , G21C9/02 , G21C7/12 , G21C7/20 , G21C9/027
CPC分类号： G21C7/16 , G21C7/20 , G21C9/027 , G21Y2002/303 , G21Y2004/302 , Y02E30/31 , Y02E30/39
摘要： A control rod drive (2) comprises a housing (8) in which a control rod support element (40) travels between a base position and a final position. A flow path (42) is provided for a pressurized fluid and passes through a throttle bushing (30). The path has a free flow cross-section which varies depending on the actual position of the control rod support element. An Independent claim is also included for moving a control rod into a reactor core of a boiling water reactor. The free flow cross-section increases from the base position to the final position. The control rod support element has a changing outer diameter. The control rod support element is formed as a hollow plunger having a bypass opening in one wall.

4. 发明专利

JP2001264476A HEAVY METAL COOLING FURNACE 失效
公开(公告)号：JP2001264476A
公开(公告)日：2001-09-26
申请号：JP2000075056
申请日：2000-03-17
申请人： TOSHIBA CORP
发明人： SHIRATORI KOZO , YOKOYAMA TSUGIO , ARIYOSHI MASAHIKO , IIDA NORIHIKO
IPC分类号： G21C9/02 , G21C1/02 , G21C5/00 , G21C5/20 , G21C7/12 , G21C7/14 , G21C7/20 , G21C7/28 , G21C13/024 , G21C15/00
摘要： PROBLEM TO BE SOLVED: To provide sound structure of a reactor vessel by minimizing the weight of a primary coolant, reducing the amount of materials, and lightening thermal conditions. SOLUTION: The reactor vessel 24 is composed of a spherical vessel part 22 and a cylindrical part 23, and a steam generator 45 containing a reactor core 38, a heat insulating layer 37, and a coil part 62 of an electromagnetic pump, and a lead coolant 41 are accommodated on the inside. Plural control rod driving mechanisms 34 passing through a rotating plug 31 blocking the upper opening of the reactor vessel 24 are installed. A control rod 76 is composed of an absorbing body 78 and a lower guide tube 77 containing the absorbing body 78. Bouyancy is utilized in a scram action of the control rod 76 to conduct rising operation to ensure the safety of a reactor.

5. 发明专利

JP2000028770A FUEL ASSEMBLY 失效
公开(公告)号：JP2000028770A
公开(公告)日：2000-01-28
申请号：JP19323698
申请日：1998-07-08
申请人： MITSUBISHI HEAVY IND LTD
发明人： NUNOKAWA KOICHI , ASANO YASUHISA
IPC分类号： G21C3/326 , G21C7/20
摘要： PROBLEM TO BE SOLVED: To prevent a dash pot from being bent and deformed by a compression load in the axis direction of a control rod guide thimble by providing a large- diameter part with nearly the same diameter as that of the control rod guide thimble at the lower part of the dash pot, and by setting an effective length other than the large-diameter part within a specific range of the length of the control rod guide thimble. SOLUTION: A control rod guide thimble 5 is formed in a straight-pipe shape, and a capillary-shaped dash pot 12 is formed at the lower part. The dash pot 12 is used for reducing the dropping speed of a control rod where a control rod driving device is separated and for relieving impact being applied to an upper nozzle, a large-diameter part 13 is formed at the lower part of each dash pot 12. The external diameter of the large-diameter part 13 is formed so that the external diameter of the large-diameter part 13 is set nearly equal to the external diameter of the control rod guide thimble 5, and essential, effective length S of the dash pot other than the large-diameter part 13 is set within the range of S=0.03-0.1 L, preferably, S=0.04-0.06 L, when the length of the control rod guide thimble 5 is set to L.

6. 发明专利

JPH06102390A SHOCK ABSORBER FOR CONTROL ROD 失效
公开(公告)号：JPH06102390A
公开(公告)日：1994-04-15
申请号：JP24986992
申请日：1992-09-18
申请人： TOSHIBA CORP
发明人： ITAYA MASAO , KATAGIRI SHIGEO
IPC分类号： G21C7/20
摘要： PURPOSE:To prevent the damage of a hearth section in a reactor in case a control rod is dropped. CONSTITUTION:A shock absorber 17 is provided in a control rod guide hole on the bottom section 13a of a core support structure on a hearth section. The shock absorber 17 is stacked with multiple round dish-like cushioning bodies 18 so that dish-like recesses are reversed in sequence in the stacking direction, a top plate 19 is stacked on the uppermost cushioning body 18 in face contact, and a bottom plate 20 is inserted between the lowermost cushioning body 18 and the bottom section 13a.

7. 发明专利

JPH0533757B2 失效
公开(公告)号：JPH0533757B2
公开(公告)日：1993-05-20
申请号：JP17893086
申请日：1986-07-31
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ISHAMA SATOSHI
IPC分类号： G21C7/12 , G21C7/20

8. 发明专利

JPH0317595A CONTROL ROD DRIVE MECHANISM 失效
公开(公告)号：JPH0317595A
公开(公告)日：1991-01-25
申请号：JP15043889
申请日：1989-06-15
申请人： TOSHIBA CORP
发明人： INOUE AKIHIRO
IPC分类号： G21C7/12 , G21C7/20
摘要： PURPOSE:To improve the soundness of each member of the title mechanism by engaging the first upper guide to a control rod guide tube base and by connecting the first guide to the second upper guide, so as to be able to move freely. CONSTITUTION:An upper guide is divided into the first upper guide 24a and the second upper guide 24b, and a spring 29 is placed between them. The guide 24a is attached to an inner upper most end of a CRD (control rod drive mechanism) housing 5 and is engaged to a CR guide tube base 23a, by rotating. On the other hand, the guide 24b is fixed to each guide 24a and an outer tube 21 by keys 30 and 31, through the spring 29. For the outer tube 21, a whole spring constant can be selected by providing grooves on an outer surface part of the tube. In this case, a much greater energy absorption can be realized by selecting a groove depth at a thin thickness part of the groove, not so as to become the weakest point in its strength, and a travelling distance of the guide 24b can be increased as well and therewith a dash-pot effect of the spring 29 can be enhanced.

9. 发明专利

JPH032436B2 失效
公开(公告)号：JPH032436B2
公开(公告)日：1991-01-16
申请号：JP3947189
申请日：1989-02-21
申请人： KOMITSUSARIA TA RENERUJII ATOMIIKU , FURAMATOMU E KOJEMA FRAGEMA
发明人： JOSEFU RUKURERUKU
IPC分类号： G21C3/326 , G21C3/33 , G21C3/334 , G21C7/20 , G21C19/33

10. 发明专利

JPH02236492A CONTROL ROD FOR HIGH-TEMPERATURE GAS-COOLED REACTOR 失效
公开(公告)号：JPH02236492A
公开(公告)日：1990-09-19
申请号：JP5857489
申请日：1989-03-10
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： MOGI HARUYOSHI , FUKAMICHI KENJIRO
IPC分类号： G21C7/14 , G21C7/20
摘要： PURPOSE:To improve the reliability and safety of a shock absorber by constituting the shock absorber of bellows and guide sleeves which slide in the elongation and contraction direction of the bellows. CONSTITUTION:The shock absorber 15 is constituted of the bellows 16a, 16b and the guide sleeves 17a to 17d which slide in the elongation and expansion direction of the bellows 16a, 16b. The shock absorber 15 collides against a reactor floor part and is thereby deformed if a wire rope 10 is broken and a control rod falls into a control rod insertion hole 5. The shock absorber 15 is constituted of the bellows 16a, 16b and the guide sleeves 17a to 17d in such a case, then the large deflection of the bellows 16a, 16b in the insertion hole 5 is prevented by the guide sleeves 17a to 17d. Even if, therefore, the control rod falls into the insertion hole 5 by the breakage accident of the wire rope 10, the arresting of the shock absorber 15 in the insertion hole 5 is obviated and the control rod can be pulled up from the hole 5.

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