WO2012081232A1 - 加圧水型原子炉 - Google Patents
加圧水型原子炉 Download PDFInfo
- Publication number
- WO2012081232A1 WO2012081232A1 PCT/JP2011/006946 JP2011006946W WO2012081232A1 WO 2012081232 A1 WO2012081232 A1 WO 2012081232A1 JP 2011006946 W JP2011006946 W JP 2011006946W WO 2012081232 A1 WO2012081232 A1 WO 2012081232A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reactor
- pressure vessel
- reactor pressure
- keyway
- pressurized water
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C5/00—Moderator or core structure; Selection of materials for use as moderator
- G21C5/02—Details
- G21C5/10—Means for supporting the complete structure
-
- 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 a pressurized water reactor.
- the primary coolant introduced to the reactor is heated by the thermal energy of the fuel assembly of the reactor and is guided to the steam generator.
- the steam generator heat is exchanged between the heated primary coolant and the secondary coolant, and steam generated by boiling the secondary coolant is guided to the turbine to generate power.
- FIG. 6 is a schematic sectional elevation view of a conventional pressurized water reactor.
- the reactor pressure vessel 1 is a substantially cylindrical vessel whose axis is the vertical direction.
- the reactor pressure vessel 1 is provided with an inlet nozzle 4 into which the primary coolant flows and an outlet nozzle 5 from which the heated primary coolant flows out.
- a large number of fuel assemblies 2, a cylindrical core tank 3 surrounding the fuel assemblies 2, and a lower core support plate 8 that supports the fuel assemblies 2 are disposed in the reactor pressure vessel 1.
- An annular downcomer 6 is formed between the reactor pressure vessel 1 and the reactor core 3.
- a radial key 9 is installed below the downcomer 6 as a radial support for positioning the reactor pressure vessel 1 in the radial direction.
- the primary coolant flows into the reactor pressure vessel 1 from the inlet nozzle 4, descends the downcomer 6, joins at the lower plenum 7 formed at the lower part of the fuel assembly 2, and reverses the flow direction upward.
- the fuel assembly 2 in the core tank 3 is raised through the core support plate 8.
- the primary coolant heated by the fuel assembly 2 joins and mixes at the upper part, flows out from the outlet nozzle 5, and is guided to a steam generator (not shown).
- Patent Document 1 In order to make the coolant flowing in from the inlet nozzle uniform in the circumferential direction, it is proposed to arrange a streamlined peeling suppression member on the downcomer and to form a radial support (radial key) in a streamlined form.
- Patent Document 1 Has been.
- the present invention has been made to solve the above-described problems, and is a reactor that can uniformize the primary coolant flowing down the downcomer in the circumferential direction and provide the primary coolant evenly distributed in the fuel assembly.
- An object is to provide an in-furnace structure.
- a pressurized water reactor includes a cylindrical reactor pressure vessel having a plurality of inlet nozzles connected to a side surface and having a vertical axis, and the reactor pressure.
- a cylindrical shape having a vertical axis as an axis and forming an annular downcomer between a plurality of fuel assemblies housed in a vessel and the plurality of fuel assemblies and an inner surface of the reactor pressure vessel
- the core tank and the downcomer below the inlet nozzle are spaced apart from each other in the circumferential direction, and a vertical flow path is formed inside each to position the core tank and the reactor pressure vessel.
- a plurality of radial supports are provided.
- the primary coolant flowing down the downcomer can be made uniform in the circumferential direction, and the primary coolant distributed evenly in the fuel assembly can be provided.
- FIG. 2 is a diagram showing a configuration of a radial key with flow passage according to the first embodiment, and is a sectional view taken along line II-II in FIG. 1.
- FIG. 4 is a partial vertical sectional view taken along line IV-IV in FIG. 3.
- the horizontal sectional view showing the modification of the in-furnace structure concerning a 2nd embodiment. 1 is a schematic sectional elevation view of a conventional pressurized water reactor.
- a radial key 21 with a flow path provided with a flow path 22 therein and a key groove member 40 are used as a radial support.
- Each radial key 21 with flow passage 21 is attached to the outside of the lower part of the reactor core 3 at intervals in the circumferential direction.
- the radial key with flow passage 21 has a protrusion extending in the vertical direction.
- a keyway member 40 is attached at a position facing each radial key 21 with a flow path inside the reactor pressure vessel 1.
- Each key groove member 40 is formed with a key groove 41 extending in the vertical direction, and the protruding portion of the radial key 21 with a flow path is fitted into each key groove 41 to position the reactor core 3 in the reactor pressure vessel 1. be able to.
- a coolant flow path 22 in which the coolant flows in the vertical direction is provided.
- the reactor core vessel 3 is positioned in the reactor pressure vessel 1 while maintaining a gap by the radial key 21 with the flow path and the key groove member 40.
- the flow 12 of the primary coolant flowing in from the inlet nozzle 4 and descending the downcomer 6 is divided into left and right when passing through the radial key 21 with flow path, and also flows through the coolant flow path 22 provided in the center. .
- the peeling which arises when a coolant passes the radial key 21 with a flow path is suppressed.
- the radial key 21 with flow passage is illustrated as being fixed at four locations in the circumferential direction, but the number of radial keys can be increased or decreased as appropriate.
- the flow path 22 is provided in the component by the side of the reactor core 3, the flow path 22 can be provided in the component by the side of the reactor pressure vessel 1, or in both components.
- the radial key 21 with a flow path is attached to the outside of the reactor core 3, and the keyway member 40 is attached to the inside of the reactor pressure vessel 1.
- the key groove member 40 may be attached to the outside of the reactor core 3, and the radial key 21 with a flow path may be attached to the inside of the reactor pressure vessel 1.
- a radial support 23 including a pair of magnetic bodies 24 and 25 is used as a radial support instead of using the radial key 21 with a flow path and the key groove member 40.
- the radial support 23 is composed of a magnetic body 24 fixedly installed on the reactor core 3 side and a magnetic body 25 fixedly installed on the reactor pressure vessel 1 side of the opposing surface, and in the circumferential direction of the reactor core 3. A plurality are arranged. These opposing magnetic body 24 and magnetic body 25 are magnetized so as to attract or repel each other.
- a flow path 26 is formed between the magnetic body 24 and the magnetic body 25.
- the inclined portions 27 may be formed at the upper and lower ends of the magnetic body 24 and the magnetic body 25 in order to reduce the flow resistance.
- the reactor core 3 is positioned in a non-contact manner in the radial direction by electromagnetic forces attracting each other (or repulsive electromagnetic forces).
- electromagnetic forces attracting each other or repulsive electromagnetic forces.
- radial supports 23 are installed, but the number can be arbitrarily changed.
- the radial support 23 is disposed over the entire circumferential direction of the core tank 3.
- SYMBOLS 1 Reactor pressure vessel, 2 ... Fuel assembly, 3 ... Core tank, 4 ... Inlet nozzle, 5 ... Outlet nozzle, 6 ... Downcomb, 7 ... Lower plenum, 8 ... Lower core support plate, 9 ... Radial key, 21 ... radial key with flow path, 22 ... flow path, 23 ... radial support, 24, 25 ... magnetic material, 26 ... flow path, 27 ... inclined portion, 40 ... key groove member, 41 ... key groove
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
本発明の第1の実施形態を、図1及び図2を用いて説明する。
本発明の第2の実施形態を、図3乃至図5を用いて説明する。なお、上記実施形態と同一の構成には同じ番号を付し、重複説明を省略する。
以上、本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、組み合わせ、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。
Claims (5)
- 複数の入口ノズルが側面に接続されて軸を鉛直方向とする円筒状の原子炉圧力容器と、
前記原子炉圧力容器内に収容された複数の燃料集合体と、
前記複数の燃料集合体を囲み、前記原子炉圧力容器の内側面との間に環状のダウンカマを形成する、軸を鉛直方向とする円筒状の炉心槽と、
前記入口ノズルより下方の前記ダウンカマで周方向に互いに間隔をあけて配置され、それぞれの内部に鉛直方向の流路が形成されて、前記炉心槽と前記原子炉圧力容器とを位置決めする複数のラジアルサポートと、
を有することを特徴とする加圧水型原子炉。 - 前記ラジアルサポートは、
鉛直方向に延びるキー溝が形成されて前記原子炉圧力容器の内側に固定されたキー溝部材と、
前記炉心槽の外側に向けて突出して前記キー溝内に少なくとも部分的に挿入されたキーと、
を含み、
前記流路は前記キー溝部材および前記キーの少なくとも一方に形成されていること、
を特徴とする請求項1に記載の加圧水型原子炉。 - 前記ラジアルサポートは、
鉛直方向に延びるキー溝が形成されて前記炉心槽の外側に固定されたキー溝部材と、
原子炉圧力容器の内側に固定されて前記キー溝に向けて突出して前記キー溝内に少なくとも部分的に挿入されたキーと、
を含み、
前記流路は前記キー溝部材および前記キーの少なくとも一方に形成されていること、
を特徴とする請求項1に記載の加圧水型原子炉。 - 前記ラジアルサポートは、前記原子炉圧力容器の内側に固定された第1の磁性体と、前記第1の磁性体に対向する位置で前記炉心槽の外側に固定された第2の磁性体と、を備えていることを特徴とする請求項1ないし請求項3のいずれか一項に記載の加圧水型原子炉。
- 前記ラジアルサポートを炉心槽の円周方向全体にわたって設置したことを特徴とする請求項4記載の加圧水型原子炉。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11848045.8A EP2654043A4 (en) | 2010-12-13 | 2011-12-13 | PRESSURE WATER REACTOR |
US13/993,227 US9251919B2 (en) | 2010-12-13 | 2011-12-13 | Pressurized water reactor |
RU2013132475/07A RU2545518C2 (ru) | 2010-12-13 | 2011-12-13 | Реактор с охлаждением водой под давлением |
CN201180059298.8A CN103250212B (zh) | 2010-12-13 | 2011-12-13 | 压水反应堆 |
KR1020137015845A KR101491734B1 (ko) | 2010-12-13 | 2011-12-13 | 가압수형 원자로 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-277043 | 2010-12-13 | ||
JP2010277043 | 2010-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012081232A1 true WO2012081232A1 (ja) | 2012-06-21 |
Family
ID=46244351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/006946 WO2012081232A1 (ja) | 2010-12-13 | 2011-12-13 | 加圧水型原子炉 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9251919B2 (ja) |
EP (1) | EP2654043A4 (ja) |
JP (1) | JP2012141298A (ja) |
KR (1) | KR101491734B1 (ja) |
CN (1) | CN103250212B (ja) |
RU (1) | RU2545518C2 (ja) |
WO (1) | WO2012081232A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103903656A (zh) * | 2012-12-26 | 2014-07-02 | 中国核动力研究设计院 | 压水型核反应堆堆内构件 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106415730B (zh) | 2013-12-31 | 2018-04-20 | 纽斯高动力有限责任公司 | 用于核反应堆的地震衰减系统 |
US10403407B2 (en) | 2013-12-31 | 2019-09-03 | Nuscale Power, Llc | Managing dynamic forces on a nuclear reactor system |
CN109102907A (zh) * | 2018-07-20 | 2018-12-28 | 中广核研究院有限公司 | 一种新型堆芯金属反射层组件 |
CN109411101A (zh) * | 2018-11-30 | 2019-03-01 | 上海核工程研究设计院有限公司 | 一种堆内构件导向筒的固定结构 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01266394A (ja) * | 1988-04-19 | 1989-10-24 | Hitachi Ltd | 大重量構造物の支持方法、及び同装置 |
JPH07306288A (ja) * | 1994-03-15 | 1995-11-21 | Framatome Et Cogema <Fragema> | 下部インターナルを保持するための手段を備えた原子炉容器及び保持手段の調整方法 |
JP2002357688A (ja) * | 2001-05-31 | 2002-12-13 | Babcock Hitachi Kk | 原子炉圧力容器 |
JP2005024383A (ja) | 2003-07-02 | 2005-01-27 | Mitsubishi Heavy Ind Ltd | 原子炉の炉内構造 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3554868A (en) * | 1967-10-09 | 1971-01-12 | Westinghouse Electric Corp | Reactor internals lower radial support system |
JPH0862372A (ja) | 1994-08-18 | 1996-03-08 | Mitsubishi Heavy Ind Ltd | 加圧水型原子炉の炉内構造 |
JP3316459B2 (ja) * | 1998-11-11 | 2002-08-19 | 三菱重工業株式会社 | 原子炉容器の炉内構造物 |
US7245689B2 (en) | 2003-06-18 | 2007-07-17 | Mitsubishi Heavy Industries, Ltd | Nuclear reactor internal structure |
JP4202197B2 (ja) | 2003-06-18 | 2008-12-24 | 三菱重工業株式会社 | 原子炉の炉内構造 |
JP2005195461A (ja) | 2004-01-07 | 2005-07-21 | Toshiba Corp | 沸騰水型原子炉およびその組立方法 |
CN1312701C (zh) * | 2005-01-07 | 2007-04-25 | 清华大学 | 模块式高温气冷堆压力壳的无阻尼器支承系统 |
RU2296380C1 (ru) * | 2005-07-21 | 2007-03-27 | ФГУП Опытное конструкторское бюро "ГИДРОПРЕСС" | Устройство для закрепления активной зоны ядерного реактора с водой под давлением |
JP4786616B2 (ja) * | 2007-08-31 | 2011-10-05 | 三菱重工業株式会社 | 原子炉 |
-
2011
- 2011-12-13 KR KR1020137015845A patent/KR101491734B1/ko not_active IP Right Cessation
- 2011-12-13 EP EP11848045.8A patent/EP2654043A4/en not_active Withdrawn
- 2011-12-13 RU RU2013132475/07A patent/RU2545518C2/ru not_active IP Right Cessation
- 2011-12-13 CN CN201180059298.8A patent/CN103250212B/zh not_active Expired - Fee Related
- 2011-12-13 US US13/993,227 patent/US9251919B2/en not_active Expired - Fee Related
- 2011-12-13 WO PCT/JP2011/006946 patent/WO2012081232A1/ja active Application Filing
- 2011-12-13 JP JP2011272379A patent/JP2012141298A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01266394A (ja) * | 1988-04-19 | 1989-10-24 | Hitachi Ltd | 大重量構造物の支持方法、及び同装置 |
JPH07306288A (ja) * | 1994-03-15 | 1995-11-21 | Framatome Et Cogema <Fragema> | 下部インターナルを保持するための手段を備えた原子炉容器及び保持手段の調整方法 |
JP2002357688A (ja) * | 2001-05-31 | 2002-12-13 | Babcock Hitachi Kk | 原子炉圧力容器 |
JP2005024383A (ja) | 2003-07-02 | 2005-01-27 | Mitsubishi Heavy Ind Ltd | 原子炉の炉内構造 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2654043A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103903656A (zh) * | 2012-12-26 | 2014-07-02 | 中国核动力研究设计院 | 压水型核反应堆堆内构件 |
CN103903656B (zh) * | 2012-12-26 | 2016-08-03 | 中国核动力研究设计院 | 压水型核反应堆堆内构件 |
Also Published As
Publication number | Publication date |
---|---|
CN103250212B (zh) | 2015-09-30 |
EP2654043A4 (en) | 2016-05-11 |
KR101491734B1 (ko) | 2015-02-09 |
RU2013132475A (ru) | 2015-01-20 |
RU2545518C2 (ru) | 2015-04-10 |
JP2012141298A (ja) | 2012-07-26 |
US9251919B2 (en) | 2016-02-02 |
EP2654043A1 (en) | 2013-10-23 |
CN103250212A (zh) | 2013-08-14 |
KR20130096305A (ko) | 2013-08-29 |
US20130343505A1 (en) | 2013-12-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2012081232A1 (ja) | 加圧水型原子炉 | |
KR101129735B1 (ko) | 원자로 | |
JP5542062B2 (ja) | 原子炉圧力容器のための中性子遮蔽パネル | |
JP5497454B2 (ja) | 加圧水型原子炉のスカート状整流装置 | |
WO2013159438A1 (zh) | 一种反应堆下部堆内构件 | |
JP2012251977A (ja) | 炉内構造物及び原子炉 | |
JP2011523696A5 (ja) | ||
WO2007100041A1 (ja) | 気水分離器 | |
CN103177782A (zh) | 一种反应堆下部堆内构件 | |
JP2009075001A (ja) | 原子炉 | |
JP2014215250A (ja) | 原子炉格納容器の空冷システム | |
JP5818450B2 (ja) | 原子炉容器 | |
JP2999124B2 (ja) | 加圧水型原子炉の炉内下部構造物 | |
EP2814039B1 (en) | Water supply pipe for steam generator | |
JP4202197B2 (ja) | 原子炉の炉内構造 | |
JP2014122856A (ja) | 加圧水型原子炉の原子炉構造 | |
JP2012112590A (ja) | 蒸気発生器及び原子力プラント | |
JP4301604B2 (ja) | 加圧水型原子炉 | |
JP2002257971A (ja) | 原子炉容器 | |
JP4202200B2 (ja) | 原子炉の炉内構造 | |
JP5959043B2 (ja) | 高速増殖炉原子炉容器内上部プレナム内整流装置 | |
JP2012002657A (ja) | 炉内構造物および原子炉圧力容器 | |
JPH10111379A (ja) | 加圧水型原子炉の内部構造 | |
JP2014066582A (ja) | 加圧水型原子炉用原子燃料集合体およびそれに用いられる下部ノズル | |
US20200143949A1 (en) | Centering Pin For A Nuclear Plant Core, For Reactor Vessels |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11848045 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20137015845 Country of ref document: KR Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2011848045 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011848045 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2013132475 Country of ref document: RU Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13993227 Country of ref document: US |