JPH0230478B2 - - Google Patents
Info
- Publication number
- JPH0230478B2 JPH0230478B2 JP56191805A JP19180581A JPH0230478B2 JP H0230478 B2 JPH0230478 B2 JP H0230478B2 JP 56191805 A JP56191805 A JP 56191805A JP 19180581 A JP19180581 A JP 19180581A JP H0230478 B2 JPH0230478 B2 JP H0230478B2
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- outer cylinder
- rate adjustment
- adjustment mechanism
- modular flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000008358 core component Substances 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Flow Control (AREA)
- External Artificial Organs (AREA)
Description
【発明の詳細な説明】
本発明は、高速炉のモジユール型流量調節機構
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a modular flow control mechanism for a fast reactor.
一般に高速炉の炉心は、炉心燃料集合体やブラ
ンケツト燃料集合体、制御棒集合体等の種々の炉
心構成要素からなり、各々異なつた熱特性を有す
るため、各領域毎に分割しての流量調節が必要と
される。高速炉の大型化、長寿命化に伴い、この
流量調節機構として、複数本（例えば７本）の炉
心構成要素の流量調節をその内部で行い、これら
を組合せることにより、炉心全体を支持するとと
もに流量調節を行い、炉心の変更に対し有利な、
モジユール型流量調節機構が案出された。 In general, the core of a fast reactor consists of various core components such as core fuel assemblies, blanket fuel assemblies, and control rod assemblies, each of which has different thermal characteristics. Therefore, the flow rate must be adjusted separately for each region. is required. As fast reactors become larger and have longer lifespans, this flow rate adjustment mechanism internally adjusts the flow rate of multiple core components (for example, seven), and by combining these, the entire core is supported. It also adjusts the flow rate, which is advantageous when changing the reactor core.
A modular flow control mechanism was devised.
このモジユール型流量調節機構は、その内部で
複数種類の流量調節を行うため、その方向の位置
決めは重要であり、また組立および交換を考慮
し、モジユール型流量調節機構相互の隙間による
自身の傾きを小さく抑え、地震時等においても、
炉心を所定の位置に保持して、制御棒挿入性や、
炉心構成要素の健全性を確保する必要がある。 This modular flow rate adjustment mechanism performs multiple types of flow rate adjustment internally, so positioning in its direction is important.Also, in consideration of assembly and replacement, the modular flow rate adjustment mechanism should be designed to prevent its own inclination due to gaps between each other. Keep it small, even during earthquakes, etc.
It holds the core in place, making it easier to insert control rods,
It is necessary to ensure the integrity of core components.
本発明は、この様な事情に対処してなされたも
ので、連結管に挿入され冷却材流入口を有する脚
部と、この脚部の上方に接続される外筒と、この
外筒内に軸方向に沿つて形成される複数の分配室
と、この分配室の下部にそれぞれ配設される流量
調節素子と、前記分配室の上部にそれぞれ配設さ
れ炉心構成要素の下端に形成されるエントランス
ノズルを挿入する支持筒と、前記外筒の対向側面
にそれぞれ形成される形状の異なる突起部とから
なることを特徴とするモジユール型流量調節機構
を提供しようとするものである。 The present invention has been made in response to these circumstances, and includes a leg inserted into a connecting pipe and having a coolant inlet, an outer cylinder connected above the leg, and an outer cylinder inside the outer cylinder. A plurality of distribution chambers formed along the axial direction, flow rate regulating elements respectively disposed at the bottom of the distribution chambers, and entrances disposed at the tops of the distribution chambers and formed at the lower ends of the core components. The present invention provides a modular flow rate adjustment mechanism characterized by comprising a support tube into which a nozzle is inserted, and protrusions of different shapes formed on opposing sides of the outer tube.
以下本発明の詳細を図面に示す実施例について
説明する。 The details of the present invention will be described below with reference to embodiments shown in the drawings.
第１図は、本発明の一実施例のモジユール型流
量調節機構が用いられる高速増殖形原子炉を示し
ており、図において符号１は炉容器を示してい
る。炉容器１の中間部内周には中心に貫通孔２を
形成された支持座３の外周が固設されており、貫
通孔２外周には炉心支持構造物４の上端に形成さ
れるフランジ５下面が載置されている。フランジ
５上面には、炉心６の外形を形成する炉心バレル
７の下端に形成されるフランジ８が載置されてい
る。炉心支持構造物４の上端開口部は多数の貫通
孔９を穿設された支持板１０により遮蔽されてお
り、貫通孔９には、炉心構成要素１１の下部１２
を挿入されるモジユール型流量調節機構１３の下
部が挿入されている。炉容器１の上端開口部は、
遮蔽プラグ１４ａにより遮蔽されており、遮蔽プ
ラグ１４ａの中心には、炉心上部機構１５ａが配
設されている。また炉容器１の図で右側には、炉
容器１の上側面および支持座３を貫通して炉心支
持構造物４内に開口する配管１６ａが配設されて
おり、図で左側には、炉容器１の上側面を貫通し
炉容器１上方に開口する配管１７ａが配設されて
いる。 FIG. 1 shows a fast breeder nuclear reactor in which a modular flow control mechanism according to an embodiment of the present invention is used, and in the figure, reference numeral 1 indicates a reactor vessel. The outer periphery of a support seat 3 having a through hole 2 formed in the center is fixed to the inner periphery of the intermediate portion of the reactor vessel 1, and the lower surface of a flange 5 formed at the upper end of the core support structure 4 is attached to the outer periphery of the through hole 2. is placed. A flange 8 formed at the lower end of a core barrel 7 that forms the outer shape of the core 6 is mounted on the upper surface of the flange 5 . The upper end opening of the core support structure 4 is shielded by a support plate 10 in which a large number of through holes 9 are formed.
The lower part of the modular flow rate adjustment mechanism 13 is inserted. The upper end opening of the furnace vessel 1 is
It is shielded by a shielding plug 14a, and a core upper mechanism 15a is disposed at the center of the shielding plug 14a. Further, on the right side of the reactor vessel 1 in the figure, a pipe 16a that penetrates the upper surface of the reactor vessel 1 and the support seat 3 and opens into the core support structure 4 is disposed, and on the left side of the figure, a pipe 16a is provided. A pipe 17a is provided that penetrates the upper side of the container 1 and opens above the furnace container 1.
第２図は、前述したモジユール型流量調節機構
１３を示すもので、このモジユール型流量調節機
構１３は、外筒１４と、この外筒の先端に続く脚
部１５とから主体部分が構成されている。脚部１
５は、支持板１０に穿設された貫通孔９から垂下
される連結管１６内に挿入されており、脚部１５
には、連結管１６の側面に形成されている流入口
１７の位置に流入口１８が形成されている。 FIG. 2 shows the above-mentioned modular flow rate adjustment mechanism 13. The main body of the modular flow rate adjustment mechanism 13 is composed of an outer cylinder 14 and a leg 15 that continues to the tip of the outer cylinder. There is. Leg 1
5 is inserted into a connecting pipe 16 hanging down from a through hole 9 drilled in the support plate 10, and the leg portion 15
An inlet 18 is formed at the position of the inlet 17 formed on the side surface of the connecting pipe 16.
また、脚部１５には、連結管１６底面と脚部１
５底面との間に形成される空間１９と支持板１０
上方空間とを連通する連通管２０が配設されてい
る。６角形形状をした外筒１４の下部には、支持
板２１が水平に配設されており、この支持板２１
に一定間隔を置いて穿設された貫通孔２２には、
流量調節素子２３の下端が挿入支持されている。
外筒１４の上面を形成する上板２４には、流量調
節素子２３に対応する位置にそれぞれ貫通孔が穿
設され、この貫通孔には、支持筒２５が垂下され
ている。それぞれの流量調整素子２３および支持
筒２５は、支持板２１と上板２４との間に介挿さ
れる仕切板２６により形成される分配室２７内に
隔離されている。 In addition, the leg portion 15 includes the bottom surface of the connecting pipe 16 and the leg portion 1.
5 the space 19 formed between the bottom surface and the support plate 10
A communication pipe 20 communicating with the upper space is provided. A support plate 21 is disposed horizontally at the bottom of the hexagonal outer cylinder 14.
The through holes 22 are drilled at regular intervals.
The lower end of the flow rate adjustment element 23 is inserted and supported.
The upper plate 24 forming the upper surface of the outer cylinder 14 is provided with through holes at positions corresponding to the flow rate adjusting elements 23, and a support cylinder 25 is suspended from the through holes. Each flow rate adjustment element 23 and support cylinder 25 are isolated within a distribution chamber 27 formed by a partition plate 26 inserted between the support plate 21 and the upper plate 24.
支持筒２５の下部側面には、外筒１４を貫通し
外部に連通する連通管２８が接続されており、そ
れぞれの支持筒２５内には、燃料集合体１１下端
に形成されるエントランスノズル２９が挿入され
ている。支持筒２５の側面には、エントランスノ
ズル２９側面に穿設される流入口３０に対応する
位置に流入口３１が穿設されている。 A communication pipe 28 that penetrates the outer cylinder 14 and communicates with the outside is connected to the lower side surface of the support cylinder 25. Inside each support cylinder 25, an entrance nozzle 29 formed at the lower end of the fuel assembly 11 is connected. It has been inserted. An inlet 31 is formed in the side surface of the support tube 25 at a position corresponding to an inlet 30 formed in the side surface of the entrance nozzle 29 .
しかして、外筒１４の上部対向側面には、それ
ぞれモジユール型流量調節機構１３の炉心６径方
向の移動を制限し、地震時等の炉心の変動による
荷重を、伝達する突起部３２ａ，３２ｂが形成さ
れている。この突起部３２ａ，３２ｂは、外筒１
４の上方に、外筒１４と一体もしくは、溶接によ
り形成され、モジユール型流量調節機構１３の誤
装荷防止および、組立時の作業効率向上のため、
ある一定方向に突起の形状を変えられている。そ
して、突起部３２ａ，３２ｂは、使用中の隣接モ
ジユール型流量調節機構１３の突起部３２ａ，３
２ｂとの摺動および、荷重伝達時の融着を防止す
るため、表面硬化処理が施されている。 Therefore, on the upper facing side surface of the outer cylinder 14, there are protrusions 32a and 32b that respectively limit the movement of the modular flow rate adjustment mechanism 13 in the radial direction of the reactor core 6 and transmit the load due to fluctuations in the reactor core during an earthquake. It is formed. These protrusions 32a, 32b are connected to the outer cylinder 1.
4 is formed integrally with the outer cylinder 14 or by welding to prevent incorrect loading of the modular flow rate adjustment mechanism 13 and improve work efficiency during assembly.
The shape of the protrusion can be changed in a certain direction. The protrusions 32a, 32b are connected to the protrusions 32a, 32b of the adjacent modular flow rate adjustment mechanism 13 in use.
Surface hardening treatment is applied to prevent sliding with 2b and fusion during load transmission.
すなわち、それぞれのモジユール型流量調節機
構１３は、第３図に示すように支持板１０上に配
設されるが、それぞれのモジユール型流量調節機
構１３で流入口１８および流量調節素子２３の流
量係数が異なるため、方向を間違えた場合には、
所定の流量特性を得ることができない。 That is, each modular flow rate adjustment mechanism 13 is disposed on the support plate 10 as shown in FIG. Because the directions are different, if you turn in the wrong direction,
Predetermined flow characteristics cannot be obtained.
そこで、この突起部３２ａ，３２ｂの高さは第
４図に示すように、それぞれのモジユール型流量
調節機構１３の図で右側の突起部３２ａの高さを
ａ、左側の突起部３２ｂの高さをａと異なるｂと
され、ａ＋ｂの高さが、外筒１４の間隔ｃとされ
ている。なお、６面のうち他の４面は、突起部３
２ｃの高さをそれぞれｃ／２とされている。 Therefore, the heights of the protrusions 32a and 32b are as shown in FIG. is set to b, which is different from a, and the height of a+b is set to be the interval c between the outer cylinders 14. Note that the other four of the six surfaces are the protrusions 3.
The height of 2c is c/2.
したがつて、第５図に示すようにモジユール型
流量調節機構１３の方向を取り違えて、支持板１
０の連結管１６に挿入する場合には、モジユール
型流量調節機構１３は、隣接するいずれかのモジ
ユール型流量調整機構１３の突起部３２ｂとその
突起部３２ｃが干渉し、所定位置まで挿入するこ
とができない。 Therefore, as shown in FIG.
When inserting the modular flow rate adjustment mechanism 13 into the connecting pipe 16 of No. 0, the protrusion 32b of any adjacent modular flow rate adjustment mechanism 13 interferes with its protrusion 32c, and the module flow rate adjustment mechanism 13 cannot be inserted to a predetermined position. I can't.
以上、述べたように、本発明のモジユール型流
量調節機構によれば、多角形状の外筒の対向側面
にそれぞれ突起部を設け、この突起部の形状を異
ならせることにより、モジユール型流量調節機構
の誤装荷防止を計り、ひいては、炉心構成要素の
誤装荷防止を計ることが出来る。さらに、このよ
うに、ある一定方向の突起の形状を変更しておけ
ば、モジユール型流量調節機構の据付作業におい
ても、容易に方向確認が行え、作業効率の向上を
計ることが出来る。 As described above, according to the modular flow rate adjustment mechanism of the present invention, the protrusions are provided on the opposing side surfaces of the polygonal outer cylinder, and by making the shapes of the protrusions different, the modular flow rate adjustment mechanism It is possible to prevent erroneous loading of reactor core components. Furthermore, by changing the shape of the protrusion in a certain direction in this way, the direction can be easily confirmed even during the installation work of the modular flow rate adjustment mechanism, and work efficiency can be improved.
なお、以上述べた実施例では、突起部３２ａ，
３２ｂの高さを一定方向に異ならせた例について
説明したが、本発明は、かかる実施例に限定され
るものではなく、例えば、第６図に示すようにモ
ジユール型流量調節機構３３の図で右側の突起部
３３ａに凹部３４を形成し、左側の突起部３３ｂ
にこの凹部３４に嵌合する凸部３５を形成するよ
うにしてもよいことはもちろんである。 In addition, in the embodiment described above, the protrusions 32a,
Although an example in which the height of the flow rate adjustment mechanism 32b is varied in a certain direction has been described, the present invention is not limited to such an example. For example, as shown in FIG. A recess 34 is formed in the right protrusion 33a, and a recess 34 is formed in the left protrusion 33b.
Of course, a convex portion 35 that fits into this concave portion 34 may be formed.
第１図は、本発明の一実施例のモジユール型流
量調節機構の配置される高速増殖原子炉の一実施
例を示す縦断面図、第２図は、本発明のモジユー
ル型流量調節機構の一実施例を示す縦断面図、第
３図は、第２図に示すモジユール型流量調節機構
の炉心内配置を示す配置図、第４図は、第３図の
Ａ部の詳細図、第５図は、第２図に示すモジユー
ル型流量調節機構が、誤装荷された状態図を示す
縦断面図、第６図は、本発明のモジユール型流量
調節機構の他の実施例の突起部を示す図である。
１１……炉心構成要素、１４……外筒、１５…
…脚部、１６……連結管、１８……流入口、２３
……流量調節素子、２５……支持筒、２７……分
配室、２９……エントランスノズル、３２ａ，３
２ｂ，３３ａ，３３ｂ……突起部。
FIG. 1 is a longitudinal sectional view showing an embodiment of a fast breeder nuclear reactor in which a modular flow control mechanism according to an embodiment of the present invention is arranged, and FIG. 2 is a longitudinal sectional view showing an embodiment of a modular flow control mechanism according to the present invention 3 is a layout diagram showing the arrangement in the core of the modular flow control mechanism shown in FIG. 2, FIG. 4 is a detailed view of section A in FIG. 3, and FIG. 5 is a longitudinal sectional view showing an embodiment. 2 is a vertical sectional view showing a state in which the modular flow rate adjustment mechanism shown in FIG. 2 is incorrectly loaded, and FIG. 6 is a diagram showing a protrusion of another embodiment of the modular flow rate adjustment mechanism of the present invention. It is. 11...Core component, 14...Outer cylinder, 15...
...Legs, 16...Connecting pipe, 18...Inflow port, 23
...Flow rate adjustment element, 25... Support tube, 27... Distribution chamber, 29... Entrance nozzle, 32a, 3
2b, 33a, 33b... projections.
Claims (1)
と、この脚部の上方に接続される多角形状の外筒
と、この外筒内に軸方向に沿つて形成される複数
の分配室と、この分配室の下部にそれぞれ配設さ
れる流量調節素子と、前記分配室の上部にそれぞ
れ配設され炉心構成要素の下端に形成されるエン
トランスノズルを挿入する支持筒と、前記外筒の
対向側面にそれぞれ形成される形状の異なる突起
部とからなることを特徴とするモジユール型流量
調節機構。 ２ 外筒の対向側面にそれぞれ形成される突起部
は、高さが異なることを特徴とする特許請求の範
囲第１項記載のモジユール型流量調節機構。 ３ 外筒の対向側面にそれぞれ形成される突起部
の一方には凹部が形成されており、他方には、前
記凹部に対応する形状の凸部が形成されているこ
とを特徴とする特許請求の範囲第１項記載のモジ
ユール型流量調節機構。[Claims] 1. A leg portion inserted into a connecting pipe and having a coolant inlet, a polygonal outer cylinder connected above the leg portion, and a leg portion formed along the axial direction within the outer cylinder. a plurality of distribution chambers, a flow rate regulating element disposed at the lower part of each of the distribution chambers, and a support tube into which an entrance nozzle is inserted, each disposed at the upper part of the distribution chamber and formed at the lower end of the core component; , and protrusions of different shapes formed on opposing side surfaces of the outer cylinder, respectively. A modular flow rate adjustment mechanism. 2. The modular flow rate adjustment mechanism according to claim 1, wherein the protrusions formed on the opposing side surfaces of the outer cylinder have different heights. 3. A recess is formed in one of the protrusions formed on the opposing side surfaces of the outer cylinder, and a protrusion having a shape corresponding to the recess is formed in the other. A modular flow rate adjustment mechanism according to scope 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56191805A JPS5895293A (en) | 1981-12-01 | 1981-12-01 | Module type flow rate control mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56191805A JPS5895293A (en) | 1981-12-01 | 1981-12-01 | Module type flow rate control mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5895293A JPS5895293A (en) | 1983-06-06 |
| JPH0230478B2 true JPH0230478B2 (en) | 1990-07-06 |
Family
ID=16280816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56191805A Granted JPS5895293A (en) | 1981-12-01 | 1981-12-01 | Module type flow rate control mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5895293A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417277Y2 (en) * | 1987-10-15 | 1992-04-17 | ||
| JP4022565B1 (en) | 2006-10-27 | 2007-12-19 | 株式会社オ−ラテック | Aeration equipment |
-
1981
- 1981-12-01 JP JP56191805A patent/JPS5895293A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5895293A (en) | 1983-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4675154A (en) | Nuclear fuel assembly with large coolant conducting tube | |
| US3962032A (en) | Fast nuclear reactor | |
| US5533078A (en) | Nuclear fuel assembly for a pressurized water reactor | |
| JP3056023B2 (en) | Nuclear reactor, method of assembling the same, and reactor reflector | |
| US5106575A (en) | Nuclear fuel assemblies | |
| US4278501A (en) | Spring element for holding down nuclear reactor fuel assembly | |
| JPS60100792A (en) | nuclear reactor fuel assembly | |
| JPS6357756B2 (en) | ||
| US4684501A (en) | Compliant inserts mounted in upper tie plate of BWR fuel assembly | |
| JPH0230478B2 (en) | ||
| IL26112A (en) | Fuel assembly for a nuclear reactor | |
| US5727040A (en) | Fuel assembly for a boiling water reactor with adjustable by-pass | |
| US4957695A (en) | Nuclear reactor fuel assembly | |
| US4560531A (en) | Device for partitioning off the core of a nuclear reactor | |
| US4198271A (en) | Liquid metal cooled nuclear reactor constructions | |
| US5483565A (en) | Fuel assembly for a boiling water reactor | |
| KR970004419B1 (en) | Pressurized Water Reactor with Rigid Split Structure | |
| JPH0565835B2 (en) | ||
| US4775506A (en) | Nuclear reactor having control clusters with hydraulic actuation | |
| JPH023155B2 (en) | ||
| EP0225088B1 (en) | Pressurized-water nuclear reactor inner barrel assembly | |
| JPS6055289A (en) | Spacer grating inserting body | |
| JPH0350996B2 (en) | ||
| JPH0325193Y2 (en) | ||
| JPS6383691A (en) | Boiling water reactor internal structure |