JPS63153497A - Safety vessel for fast breeder reactor - Google Patents
Safety vessel for fast breeder reactorInfo
- Publication number
- JPS63153497A JPS63153497A JP61299867A JP29986786A JPS63153497A JP S63153497 A JPS63153497 A JP S63153497A JP 61299867 A JP61299867 A JP 61299867A JP 29986786 A JP29986786 A JP 29986786A JP S63153497 A JPS63153497 A JP S63153497A
- Authority
- JP
- Japan
- Prior art keywords
- upper manifold
- flow
- safety
- breeder reactor
- fast breeder
- 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.)
- Pending
Links
- 239000002826 coolant Substances 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000005514 two-phase flow Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003756 stirring 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
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、高速増殖炉の安全容器に係わり、特に、安全
容器の外側に不安定流動のないボイラを設けて、除去し
た熱を再利用できるよう番こした高速増殖炉の安全容器
擾ご関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a safety vessel for a fast breeder reactor, and in particular, the present invention relates to a safety vessel for a fast breeder reactor, and in particular, a boiler without unstable flow is provided outside the safety vessel to prevent Concerned with the construction of a safety vessel for a fast breeder reactor, where the heat generated can be reused.
（従来の技術）
周知のようｆこ、高速増殖炉の容器は炉心部および冷却
剤であるｅ、木す） ＩＪウムを直接的に収容する炉容
器と、この炉容器の外側に上記炉容器を覆うよう１こ配
置された安全容器との二重構造となってＳｖ、上記のよ
うに構成された容器は、通常、コンクリート壁で囲まれ
た原子炉室内に設置されている。(Prior Art) As is well known, the vessel of a fast breeder reactor consists of a reactor core and a coolant. It has a double structure with one safety container placed so as to cover the Sv.The container configured as described above is usually installed inside the reactor room surrounded by a concrete wall.
そして最近では、このような高速増殖炉の安全性をいっ
そう高めるために、主冷却系が故障したような場合に、
安全容器の外面から崩壊熱を除去する冷却系を設けるこ
とが検討されている。すなわち、万一のときには安全容
器の外面をガス冷却したり、液耐却することによって崩
壊熱を除去しようとする考えである。Recently, in order to further improve the safety of such fast breeder reactors, in the event of a failure of the main cooling system,
Providing a cooling system to remove decay heat from the outer surface of the safety container is being considered. In other words, the idea is to remove the decay heat in case of an emergency by cooling the outer surface of the safety container with gas or by cooling it with liquid.
しかしながら、単に崩壊熱除去のときだけ冷却系を作動
させるのでは、高価な冷却系が定常運転時に無駄になっ
てしまい、さらに、安全容器を冷却するだけでは熱エネ
ルギーが無駄に大気中に捨てられてしまうという問題が
ある。However, if the cooling system is operated only to remove decay heat, the expensive cooling system will be wasted during steady operation, and furthermore, if only the safety container is cooled, thermal energy will be wasted into the atmosphere. There is a problem with this.
（発明が解決しようとする問題点）
本発明は、安全容器の外側に不安定流動のないボイラを
設けて、除去した熱を再利用できるようにした高速増殖
炉の安全容器を提供することを目的としている。(Problems to be Solved by the Invention) The present invention provides a safety vessel for a fast breeder reactor in which a boiler without unstable flow is provided outside the safety vessel so that the removed heat can be reused. The purpose is
（間＋１点を解決するための手段）
本発明の安全容器の外面に密接して設けた複数本の吸熱
管の上部を断面積が一定ではなく、断面積が冷却媒体の
流れる方向に従って途中から小さくなった９大きくなっ
たりしている上部マニホルド管で環状に接続している。(Means for solving the gap +1 point) The cross-sectional area of the upper part of the plurality of heat absorption tubes provided in close proximity to the outer surface of the safety container of the present invention is not constant, and the cross-sectional area starts from the middle according to the flow direction of the cooling medium. They are connected in a ring by an upper manifold tube that is smaller and 9 larger.
（作用）
安全容器の外面に複数本の吸熱管を密接して設けたボイ
ラを用いているので、発生した蒸気を再利用することが
できる。また、吸熱管の上部に接続した上部マニホルド
管の流動状態は管内気液二相流となり、上部マニホルド
管が同一断面積ならば層状流→波状流→スラグ流→頃状
流と変化するが、上部マニホルド管の断面積は流れる方
向に従って途中で変化しているので、圧力変動の大きな
スラグ流を回避し、安定な流動状態となることができる
。(Function) Since a boiler is used in which a plurality of heat absorption tubes are closely arranged on the outer surface of the safety container, the generated steam can be reused. In addition, the flow state of the upper manifold pipe connected to the upper part of the heat absorption pipe is a gas-liquid two-phase flow within the pipe, and if the cross-sectional area of the upper manifold pipe is the same, it changes from laminar flow → wavy flow → slug flow → circling flow. Since the cross-sectional area of the upper manifold pipe changes midway along the flow direction, a slag flow with large pressure fluctuations can be avoided and a stable flow state can be achieved.
（実施例） 以下、図面を参照しながら実施例を説明する。(Example) Examples will be described below with reference to the drawings.
第１図は本発明の第１の実施例に係わる高速増殖炉の安
全容器を示す図である。FIG. 1 is a diagram showing a safety vessel of a fast breeder reactor according to a first embodiment of the present invention.
同図において１は安全容器で、開口部を上にした状態に
配置されている。この安全容器１内には、図示していな
い炉心、冷却剤、中間熱交換器を収容した炉容器２が、
安全容器１との間に間隙を介在させ、かつ適宜な手段で
安全容器との間の熱抵抗を小さくし得る状態に配置され
ている。In the figure, reference numeral 1 denotes a safety container, which is placed with its opening facing upward. Inside this safety vessel 1, there is a reactor vessel 2 that houses a reactor core, coolant, and intermediate heat exchanger (not shown).
A gap is interposed between the safety container 1 and the safety container 1, and the heat resistance between the safety container 1 and the safety container 1 can be reduced by appropriate means.
安全容器１の側壁部外面には複数本の吸熱管３が密接し
て取付けである。この吸熱管３の上下端ハ、環状の上部
マニホルド管４３よび下部マニホルド管５で連結されて
いる。また、上部マニホルド管４は蒸気ドラム６に接続
されており、下部マニホルド管５も下降管７を介して蒸
気ドラム６と接続している。A plurality of heat absorption tubes 3 are attached to the outer surface of the side wall of the safety container 1 in close contact with each other. The upper and lower ends of the heat absorption tube 3 are connected by an annular upper manifold tube 43 and a lower manifold tube 5. Further, the upper manifold pipe 4 is connected to the steam drum 6, and the lower manifold pipe 5 is also connected to the steam drum 6 via a downcomer pipe 7.
冷却媒体は、蒸気ドラム６から牟相流状態で下降管７を
通り下部マニホルド管５＃こ入る。そして、各吸熱管３
の入口部の図示されていない絞りを通りて吸熱管３で蒸
発潜軌として熱を吸収し気液二相流状態となった後、上
部マニホルド管４で集められて蒸気ドラム６に戻る。一
方、蒸気ドラム中の冷却媒体の蒸気は蒸気管８を通り、
図に示してはいないが、蒸気タービンなどに送られ発電
に利用された後、復水器で冷却されて琳相流状態で液管
９を通って蒸気ドラムｌこ戻される。The cooling medium enters the lower manifold pipe 5# from the steam drum 6 through the downcomer pipe 7 in a cross-phase flow state. And each heat absorption pipe 3
The heat is absorbed by the endothermic tube 3 as an evaporative latent trajectory through a constriction (not shown) at the inlet of the , and becomes a gas-liquid two-phase flow state, and then collected by the upper manifold tube 4 and returned to the steam drum 6 . On the other hand, the steam of the cooling medium in the steam drum passes through the steam pipe 8,
Although not shown in the figure, after being sent to a steam turbine or the like and used for power generation, it is cooled in a condenser and returned to the steam drum through a liquid pipe 9 in a phosphorus phase state.
さらに、上記上部マニホルド管４は、二種類の配管をレ
ジューサ１０を用いて接続することで、断面積を冷却媒
体の流れる方向に従って途中から小さくしている。Further, the upper manifold pipe 4 has two types of pipes connected together using a reducer 10, so that the cross-sectional area of the upper manifold pipe 4 is reduced from the middle along the direction in which the cooling medium flows.
上部マニホルド管４の冷却媒体は管内気液二相流となる
ので、その流動様式がスラグ流であると圧力変動が大き
くなり不安定流動の原因となるが、このようにすること
により第２図の矢印で示すように層状流→波状流→項状
流となり、安定な流れとなる効果を■する。The cooling medium in the upper manifold pipe 4 is a gas-liquid two-phase flow within the pipe, so if the flow pattern is a slug flow, pressure fluctuations will become large and cause unstable flow. As shown by the arrow, the flow changes from laminar flow to wavy flow to nuclide flow, resulting in a stable flow.
第３図は本発明の第２の実施例に係わる高速増殖炉の安
全容器を示す図である。同図に、上部マニホルド管４以
外は第１図と同一構成なので、上部マニホルド管４以外
の説明は省略する。上部マニホルド管４は、二種類の配
管をレジューサ１１を用いて接続することで、断面積が
冷却媒体の流れる方向膠こ従って途中から大きくしてい
る。FIG. 3 is a diagram showing a safety vessel of a fast breeder reactor according to a second embodiment of the present invention. In this figure, the configuration other than the upper manifold pipe 4 is the same as that in FIG. 1, so the explanation of the parts other than the upper manifold pipe 4 will be omitted. The upper manifold pipe 4 has two types of pipes connected using a reducer 11, so that its cross-sectional area increases from the middle according to the direction in which the cooling medium flows.
このよう醗こすることにより、上部マニホルド管４の冷
却媒体は管内気液二相流状態は第４図の矢印で示すよう
に唱状流→波状流→層状流→波状流となり、安定な流れ
となる効果を有する。By stirring in this way, the gas-liquid two-phase flow state of the cooling medium in the upper manifold pipe 4 in the pipe changes from a wavy flow to a wavy flow to a laminar flow to a wavy flow as shown by the arrows in Fig. 4, resulting in a stable flow. It has the effect of
以上の実＃ＴＩ例に８いては上部マニホルド管４に１個
のレジューサ１０．１１を用いた場合−こういて述べた
が、圧力損失の関係から複数のレジューサ１０．１１を
用いて上部マニホルド管４の流れを安定にしても良い。In the above actual #TI example 8, when one reducer 10.11 is used in the upper manifold pipe 4 - as described above, due to pressure loss, multiple reducers 10.11 are used to connect the upper manifold pipe 4. The flow in step 4 may be made stable.
さらに、以上の実施例に２いては安全容器１に自然循環
ボイラを取りつけた場合について述べたが、ポンプを下
降管７の出口部に設置して強制循環ボイラにしても良い
。Further, in the second embodiment described above, a natural circulation boiler is attached to the safety vessel 1, but a pump may be installed at the outlet of the downcomer pipe 7 to form a forced circulation boiler.
本発明によれば、安全容器の外面に密接して設けた複数
本の吸熱管の上部を断面積を場所により変化させた上部
マニホルド管で環状に接続し、上記上部マニホルド管の
流動様式がスラグ流にならない安全な流動のボイラを取
りつけることができるので、除去した熱を再利用するこ
とが可能になった。According to the present invention, the upper portions of a plurality of heat absorption tubes provided in close proximity to the outer surface of a safety container are connected in an annular manner by an upper manifold tube whose cross-sectional area varies depending on the location, and the flow mode of the upper manifold tube is sluggish. Since it is possible to install a boiler with a safe flow that does not cause flow, it has become possible to reuse the removed heat.
第１図に本発明の侑１の実施例の要部を示す平面図、第
２図と窮４図は本発明ｔこよる上部マニホルド内の流動
様式を示す図、第３図は本発明の第２の実施例の要部を
示す平面図である。
ｌ・・・安全容器、３・・・吸熱管、４・・・上部マニ
ホルド管。
第 １ 図
し緊μｓ１イ乙鄭フスリティ
第 ２ 丙
第 ３ 図FIG. 1 is a plan view showing the essential parts of the first embodiment of the present invention, FIGS. 2 and 4 are diagrams showing the flow pattern in the upper manifold according to the present invention, and FIG. FIG. 7 is a plan view showing main parts of a second embodiment. l... Safety container, 3... Heat absorption pipe, 4... Upper manifold pipe. Figure 1
Claims (3)
の上部を上部マニホルド管で環状に接続し、上記上部マ
ニホルド管の断面積が、場所により異なっていることを
特徴とする高速増殖炉の安全容器。(1) A high-speed vehicle characterized in that the upper portions of a plurality of heat absorption tubes provided in close proximity to the outer surface of the safety container are connected in an annular manner by an upper manifold tube, and the cross-sectional area of the upper manifold tube differs depending on the location. Breeder reactor safety vessel.
れる方向に従って途中から小さくなることを特徴とする
特許請求の範囲第１項に記載の高速増殖炉の安全容器。(2) The safety vessel for a fast breeder reactor according to claim 1, wherein the cross-sectional area of the upper manifold pipe becomes smaller from the middle along the flow direction of the cooling medium.
れる方向に従って途中から大きくなることを特徴とする
特許請求の範囲第１項に記載の高速増殖炉の安全容器。(3) The safety vessel for a fast breeder reactor according to claim 1, wherein the cross-sectional area of the upper manifold pipe increases from the middle according to the direction in which the cooling medium flows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61299867A JPS63153497A (en) | 1986-12-18 | 1986-12-18 | Safety vessel for fast breeder reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61299867A JPS63153497A (en) | 1986-12-18 | 1986-12-18 | Safety vessel for fast breeder reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63153497A true JPS63153497A (en) | 1988-06-25 |
Family
ID=17877913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61299867A Pending JPS63153497A (en) | 1986-12-18 | 1986-12-18 | Safety vessel for fast breeder reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63153497A (en) |
-
1986
- 1986-12-18 JP JP61299867A patent/JPS63153497A/en active Pending
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