WO2009151040A1 - 索引装置用設置ユニット - Google Patents
索引装置用設置ユニット Download PDFInfo
- Publication number
- WO2009151040A1 WO2009151040A1 PCT/JP2009/060498 JP2009060498W WO2009151040A1 WO 2009151040 A1 WO2009151040 A1 WO 2009151040A1 JP 2009060498 W JP2009060498 W JP 2009060498W WO 2009151040 A1 WO2009151040 A1 WO 2009151040A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gantry
- installation unit
- index
- holding
- holding portion
- Prior art date
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
- G21C17/116—Passages or insulators, e.g. for electric cables
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Definitions
- the present invention relates to an index device installation unit for installing an index device of a mobile in-core instrumentation system (TIP: Traversing In-core Probe) used in a nuclear reactor.
- TIP mobile in-core instrumentation system
- the power distribution of each part of the core is monitored by a detector of the neutron instrumentation system. That is, detectors of a neutron instrumentation system such as a neutron source region monitor, an intermediate region monitor, and a local region power monitor are dispersedly disposed in the core while being accommodated in an in-core instrumentation tube.
- a neutron instrumentation system such as a neutron source region monitor, an intermediate region monitor, and a local region power monitor are dispersedly disposed in the core while being accommodated in an in-core instrumentation tube.
- the in-core instrumented tubes are systematically replaced one after another in the periodic inspection in consideration of the detector life of the neutron instrumentation system and the irradiation life of the in-core instrumented tubes themselves.
- the reactor containment vessel of the plant to which the mobile in-core instrumentation system is applied is generally provided with an access tunnel inside.
- the access tunnel allows workers to pass from the outside to the reactor pressure vessel side, for example, at the time of periodic inspection of the mobile in-core instrumentation system.
- an index device for guiding a guide pipe to the reactor pressure vessel side is installed at a ceiling portion in the access tunnel.
- the fact that the index device is installed on the ceiling in the access tunnel is a factor that reduces the maintainability. Therefore, it is conceivable to install the index device on the lower side in the access tunnel. However, in this case, the transportability of the devices and the passage of the workers are hindered.
- the present invention has been made to solve such a problem, and improves the maintainability of the mobile in-core instrumentation system without obstructing the passage in the access tunnel in which the index device is installed. It is an object of the present invention to provide an installation unit for an index device that can
- an installation unit for an index device includes a gantry on which a mobile in-core instrumentation system index device used in a nuclear reactor is mounted; A holding unit for holding the gantry in a suspended state in an access tunnel provided in the housing, and an elevating mechanism for vertically moving the gantry held by the holding unit together with the index device.
- an index device installation unit capable of improving the maintainability of a mobile in-core instrumentation system without obstructing passage in the access tunnel in which the index device is installed. be able to.
- FIG. 1 schematically shows a TIP system according to an embodiment of the present invention.
- the figure which looked at the installation unit for index devices with which the TIP system of FIG. The figure which looked at the installation unit for index devices of FIG. 2 from the side direction.
- the TIP system 1 equipped with a mobile in-core instrumentation system secures the safety of the reactor, maintains the soundness of the fuel, and efficiently burns the fuel.
- TIP Traversing In-core Probe
- detectors of the neutron instrumentation system are distributed in the core.
- the detector of the neutron instrumentation system is arrange
- the detectors of the neutron instrumentation system are, for example, a neutron source area monitor, an intermediate area monitor, a local area power monitor, and the like.
- the TIP system 1 includes a reactor containment vessel 2, an upper grid plate 11, a local output area monitor detector 12, a pedestal 17, a reactor pressure vessel 19, a valve assembly 14, and a shielding vessel 15. , TIP drive device (detector drive device) 16, three index devices (TIP index devices) 5a, 5b, 5c, and an index device installation unit 30.
- the reactor pressure vessel 19 is fixed on a pedestal 17 in the reactor containment vessel 2.
- the reactor pressure vessel 19 contains a coolant and a core.
- the core is composed of a plurality of fuel assemblies and control rods.
- the local power range monitor detector 12 is provided in the reactor pressure vessel 19.
- the guide tube 10 is led from the TIP drive unit 16 to the index devices 5a, 5b, 5c in the reactor containment vessel 2 via the shielding vessel 15 and the valve assembly 14.
- the guide tube 10 is one from the TIP drive device 16 to the index devices 5a, 5b, 5c.
- ten (or twenty) guide pipes 10 are provided from the outlets of the index devices 5a, 5b, 5c toward the local output area monitor detector 12 side.
- the local output area monitor detector 12 is installed corresponding to the ten (or twenty) guide tubes 10. That is, the indexing devices 5a, 5b, 5c selectively switch the insertion of the guide tube 10 to a plurality of areas provided in the local output area monitor detector 12.
- the reactor containment vessel 2 of the TIP system 1 of the present embodiment is provided with an access tunnel 18 inside.
- the access tunnel 18 enables an operator to pass from the outside to the reactor pressure vessel 19 side, for example, at the time of periodic inspection of the mobile in-core instrumentation system.
- the indexing devices 5a, 5b, 5c are installed in the access tunnel 18 via the indexing device installation unit 30.
- the index device installation unit 30 includes a gantry 3 configured in a rectangular shape, a holding unit 32, and an elevating mechanism 31.
- the gantry 3 carries index devices 5a, 5b, 5c.
- the holding unit 32 holds the gantry 3 in a suspended state from the ceiling portion of the access tunnel 18 in the access tunnel 18.
- the raising and lowering mechanism 31 raises and lowers the gantry 3 held by the holding unit 32 in the direction of the arrow Z1-Z2 together with the indexing devices 5a, 5b and 5c.
- the holding portion 32 includes four externally threaded sleeves 9a, 9b, 9c, 9d as cylindrical members incorporating four externally threaded shafts 8a, 8b, 8c, 8d and sprockets 7a, 7b, 7c, 7d. Equipped with Furthermore, the holding unit 32 includes the frames 24 and 25.
- each of the four internally threaded sleeves 9a to 9d incorporating the sprockets 7a to 7d is attached to the ceiling portion of the access tunnel 18.
- the bottom side of each of the internally threaded sleeves 9a-9d incorporating the sprockets 7a-7d is held by a frame 24, 25.
- the bottom side of each of the four externally threaded shafts 8a to 8d is fixed to each corner portion on the gantry 3.
- external threads are formed on the circumferential surfaces of the externally threaded shafts 8a to 8d. Further, on the inner wall surface of each of the internally threaded sleeves 9a to 9d incorporating the sprockets 7a to 7d, there is formed an internally threaded screw into which the externally threaded shaft 8a to 8d is externally threaded.
- the shaft-like structure serving as the main body of the holding portion 32 in which the externally threaded shafts 8a to 8d are screwed into the internally threaded sleeves 9a to 9d incorporating the sprockets 7a to 7d By changing, the length is changed.
- the lifting mechanism 31 includes an air motor 20 serving as a drive source of the lifting mechanism 31, a motor bracket 23, a motor gear 35, relay gears 33 and 34, and respective female threaded sleeves 9a and 9b, Sprockets 7a, 7b, 7c, 7d fixed to the outer peripheral surface of 9c, 9d, a chain cover 26, and an endless chain 21 are provided.
- the air motor 20 rotates the output shaft (drive shaft) together with the rotor by, for example, compressed air supplied from a predetermined air supply port.
- the motor gear 35 is fixed to the output shaft of the air motor 20.
- the motor bracket 23 fixes the air motor 20 to the frame 24 described above.
- the relay gear 33 is rotatably supported by the frame 24 via a support shaft.
- the relay gear 34 is rotatably supported by the motor bracket 23 via a support shaft.
- the endless chain 21 is bridged between the motor gear 35, the relay gears 33 and 34, and the sprockets 7a to 7d.
- the endless chain 21 transmits the driving force of the air motor 20 to the female threaded sleeves 9a to 9d through the gears and the sprockets 7a to 7d.
- the sprockets 7a to 7d rotate in synchronization with one another.
- the elevating mechanism 31 rotates the sprockets 7a to 7d forwardly and reversely in the circumferential direction (direction along the outer peripheral surface of each of the sprockets 7a to 7d). That is, the raising and lowering mechanism 31 can change the length of the four sets of holding portions 32 by changing the screwing depth of the male screw with respect to the female screw, whereby the gantry 3 along with the index device 5a to 5c is indicated by the arrow Z1. -Move up and down in the Z2 direction.
- the index unit installation unit 30 of the TIP system 1 according to the present embodiment together with the gantry 3, the index units 5a to 5c when it is necessary to transport equipment and pass workers in the access tunnel It can be raised. Further, the index device installation unit 30 can lower the index devices 5a to 5c together with the gantry 3 at the time of maintenance of the mobile in-core instrumentation system. As a result, according to the index device installation unit 30, the maintainability of the mobile in-core instrumentation system can be improved without inhibiting the passage of the inside of the access tunnel 18 or the like.
- the index device installation unit 30 can prevent the generation of electrical noise when the gantry 3 is moved up and down (during motor drive). Therefore, according to the index device installation unit 30, the performance of the equipment of the mobile in-core instrumentation system in which a large number of monitors, sensors, etc. are installed is prevented from being adversely affected by electrical noise. be able to.
- the index device installation unit 30 drives the air motor 20 via the endless chain 21 etc. while holding the corner portions of the rectangular gantry 3 in a suspended state by the four holding portions 32 provided.
- the forces are respectively transmitted to the internally threaded sleeves 9a-9d incorporating the sprockets 7a-7d. Therefore, the index device installation unit 30 can rotate the sprockets 7a to 7d in synchronization with each other, and as a result, can synchronize the lifting and lowering operations of the respective corner portions of the gantry 3.
- the index device installation unit 30 can move the frame 3 up and down in the direction of the arrow Z1-Z2 while suppressing the inclination of the frame 3 on which the index devices 5a to 5c are mounted.
- the endless chain 21 is used to transmit the driving force of the air motor 20.
- the elevation mechanism 31 is configured by combining the internally threaded sleeves 9a to 9d and the externally threaded shafts 8a to 8d, instead of this, a ball screw (ball spline) or the like is applied to elevate the gantry 3 It may be moved.
- the present invention is also useful, for example, in the case where equipment disposed in a limited space is used both above and below the space.
- TIP system 2 Reactor containment vessel 3
- Local power range monitor detector 18 Access tunnel 19
- Reactor pressure vessel 20 Air motor 21 Endless chain 30
- Index Equipment installation unit 31 Lifting mechanism 32 Holding part 33, 34 Relay gear 35 Motor gear.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
2 原子炉格納容器
3 架台
5a,5b,5c 索引装置、
7a,7b,7c,7d スプロケット
8a,8b,8c,8d 雄ねじ付シャフト
9a,9b,9c,9d 雌ねじ付スリーブ
12 局部出力領域モニタ検出器
18 アクセストンネル
19 原子炉圧力容器
20 エアモータ
21 無端チェーン
30 索引装置用設置ユニット
31 昇降機構
32 保持部
33,34 中継ギア
35 モータギア。
Claims (5)
- 原子炉で使用される移動式炉心内計装系の索引装置が搭載される架台と、
原子炉格納容器内に設けられたアクセストンネル内で前記架台をつり下げた状態で保持する保持部と、
前記保持部により保持された前記架台を前記索引装置と共に昇降移動させる昇降機構と、
を具備することを特徴とする索引装置用設置ユニット。 - 前記昇降機構の駆動源は、エアモータであることを特徴とする請求項1記載の索引装置用設置ユニット。
- 前記保持部は、雄ねじを有するシャフトと前記雄ねじをねじ込む雌ねじを有しスプロケットを組み込んだ筒状部材とを備えかつ前記雌ねじに対する前記雄ねじのねじ込み深さを変えることにより、当該保持部本体の長さが変更されるように構成されており、
さらに、前記昇降機構は、前記スプロケットをその周回方向に回転させることにより、前記保持部の長さを変更して前記架台を昇降移動させる、
ことを特徴とする請求項1記載の索引装置用設置ユニット。 - 前記保持部は、雄ねじを有するシャフトと前記雄ねじをねじ込む雌ねじを有しスプロケットを組み込んだ筒状部材とを備えかつ前記雌ねじに対する前記雄ねじのねじ込み深さを変えることにより、当該保持部本体の長さが変更されるように構成されており、
さらに、前記昇降機構は、前記スプロケットをその周回方向に回転させることにより、前記保持部の長さを変更して前記架台を昇降移動させる、
ことを特徴とする請求項2記載の索引装置用設置ユニット。 - 前記架台は、矩形状に構成され、
かつ前記保持部は、矩形状の前記架台の各コーナ部分をつり下げた状態でそれぞれ保持するように4組設けられ、
さらに、前記昇降機構は、4組設けられた前記保持部の前記スプロケットを組み込んだ各筒状部材に前記エアモータの駆動力をそれぞれ伝達することにより、各スプロケットを互いに同期した状態で回転させるチェーンを少なくとも備える、
ことを特徴とする請求項4記載の索引装置用設置ユニット。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010516853A JP5308440B2 (ja) | 2008-06-10 | 2009-06-09 | 索引装置用設置ユニット |
US12/997,040 US8731128B2 (en) | 2008-06-10 | 2009-06-09 | Indexing device installation unit |
EP09762470.4A EP2302640B1 (en) | 2008-06-10 | 2009-06-09 | Installation unit for indexing device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008151467 | 2008-06-10 | ||
JP2008-151467 | 2008-06-10 |
Publications (1)
Publication Number | Publication Date |
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WO2009151040A1 true WO2009151040A1 (ja) | 2009-12-17 |
Family
ID=41416747
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2009/060498 WO2009151040A1 (ja) | 2008-06-10 | 2009-06-09 | 索引装置用設置ユニット |
Country Status (4)
Country | Link |
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US (1) | US8731128B2 (ja) |
EP (1) | EP2302640B1 (ja) |
JP (1) | JP5308440B2 (ja) |
WO (1) | WO2009151040A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014202586A (ja) * | 2013-04-04 | 2014-10-27 | 株式会社東芝 | 移動式炉心内計装用弁支持装置および移動式炉心内計装装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH09178879A (ja) * | 1995-12-26 | 1997-07-11 | Toshiba Eng Co Ltd | 局部出力領域モニタ校正装置 |
JP2003004889A (ja) * | 2001-06-18 | 2003-01-08 | Toshiba Plant Kensetsu Co Ltd | Tip索引装置の据付架台とその据付および取り外し方法 |
Family Cites Families (9)
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DE2260484A1 (de) * | 1971-12-14 | 1973-06-28 | Young & Cunningham Newcast Jas | Stroemungsventil |
US3768628A (en) * | 1972-03-27 | 1973-10-30 | Pennwalt Corp | Elevator-hopper-feeder-assembly |
US3851854A (en) * | 1973-07-05 | 1974-12-03 | F Roybal | Construction robot |
US4600085A (en) * | 1984-11-19 | 1986-07-15 | Pierre Gagnon | Platform lift |
US5343581A (en) * | 1992-10-21 | 1994-09-06 | Stryker Corporation | Housing and drive mechanism for screw lift of hospital bed |
US5722304A (en) * | 1994-03-01 | 1998-03-03 | Honeywell Inc. | Linear actuator |
FR2749630B1 (fr) * | 1996-06-07 | 1998-10-09 | Lohr Ind | Dispositif de manoeuvre d'une structure porteuse a partir d'un couple de vis portant chacune un ecrou de translation |
US7370725B1 (en) * | 2005-01-03 | 2008-05-13 | Gary R Dornfeld | Motorized rungless ladder |
US8286754B2 (en) * | 2007-05-17 | 2012-10-16 | Lift-U, Division Of Hogan Mfg., Inc. | Vertical lift platform assembly |
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2009
- 2009-06-09 WO PCT/JP2009/060498 patent/WO2009151040A1/ja active Application Filing
- 2009-06-09 JP JP2010516853A patent/JP5308440B2/ja active Active
- 2009-06-09 US US12/997,040 patent/US8731128B2/en active Active
- 2009-06-09 EP EP09762470.4A patent/EP2302640B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09178879A (ja) * | 1995-12-26 | 1997-07-11 | Toshiba Eng Co Ltd | 局部出力領域モニタ校正装置 |
JP2003004889A (ja) * | 2001-06-18 | 2003-01-08 | Toshiba Plant Kensetsu Co Ltd | Tip索引装置の据付架台とその据付および取り外し方法 |
Non-Patent Citations (1)
Title |
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See also references of EP2302640A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014202586A (ja) * | 2013-04-04 | 2014-10-27 | 株式会社東芝 | 移動式炉心内計装用弁支持装置および移動式炉心内計装装置 |
Also Published As
Publication number | Publication date |
---|---|
JP5308440B2 (ja) | 2013-10-09 |
EP2302640A4 (en) | 2016-03-30 |
US20110096889A1 (en) | 2011-04-28 |
EP2302640A1 (en) | 2011-03-30 |
JPWO2009151040A1 (ja) | 2011-11-17 |
EP2302640B1 (en) | 2017-09-20 |
US8731128B2 (en) | 2014-05-20 |
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