JPH0460500A - Tank type fast breeder reactor - Google Patents
Tank type fast breeder reactorInfo
- Publication number
- JPH0460500A JPH0460500A JP2171482A JP17148290A JPH0460500A JP H0460500 A JPH0460500 A JP H0460500A JP 2171482 A JP2171482 A JP 2171482A JP 17148290 A JP17148290 A JP 17148290A JP H0460500 A JPH0460500 A JP H0460500A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- coolant
- tube bundle
- heat exchanger
- 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.)
- Granted
Links
- 239000002826 coolant Substances 0.000 claims abstract description 26
- 230000002265 prevention Effects 0.000 claims description 37
- 238000005192 partition Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 25
- 230000007423 decrease Effects 0.000 abstract description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 30
- 229910052708 sodium Inorganic materials 0.000 description 30
- 239000011734 sodium Substances 0.000 description 30
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- 102000005393 Sodium-Potassium-Exchanging ATPase Human genes 0.000 description 1
- 108010006431 Sodium-Potassium-Exchanging ATPase Proteins 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 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
-
- 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
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明はタンク型高速増殖炉に係り、特に中間熱交換器
における二次冷却材の伝熱管管束出口部の構造の改良に
関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a tank-type fast breeder reactor, and in particular to an improvement in the structure of the exit portion of a heat transfer tube bundle of secondary coolant in an intermediate heat exchanger. Regarding.
（従来の技術）
一般に、タンク型高速増殖炉は、−次および二次の冷却
材として液体金属ナトリウムか用いられ、炉心部で加熱
された一次ナトリウムを、原子炉容器内に設置された中
間熱交換器に導いて二次ナトリウムと熱交換させ、冷却
された一次ナトリウムを再び炉心部に送り込むようにし
ている。(Prior art) In general, tank-type fast breeder reactors use liquid metal sodium as the secondary and secondary coolant, and the primary sodium heated in the reactor core is transferred to an intermediate heat source installed in the reactor vessel. The primary sodium is led to an exchanger where it exchanges heat with secondary sodium, and the cooled primary sodium is sent back into the reactor core.
第９図は、管内−次冷却材タイブの中間熱交換器を備え
た従来のタンク型高速増殖炉を示すもので、−次ナトリ
ウムを収容する原子炉容器１の内部は、隔壁２により上
部プレナム３と下部プレナム４とに仕切られており、こ
の隔壁２の中央部には、炉心燃料集合体５、ブラケット
燃料集合体６および反射板７からなる炉心部８が設置さ
れてぃる。FIG. 9 shows a conventional tank-type fast breeder reactor equipped with an in-tube coolant type intermediate heat exchanger. 3 and a lower plenum 4, and in the center of this partition wall 2, a core section 8 consisting of a core fuel assembly 5, a bracket fuel assembly 6, and a reflector plate 7 is installed.
原子炉容器１の上端開口部を閉塞するルーフスラブ９に
は、炉心上部機構１０と中間熱交換器１１とが搭載され
ており、−次ナトリウムを循環させる循環ポンプ１２は
、ルーフスラブ９上のモータ１３により駆動され、その
吐出側に配した入口配管１４を介し、下部プレナム４内
の一次ナトリウムを高圧プレナム１５に送給するように
なっている。A core upper mechanism 10 and an intermediate heat exchanger 11 are mounted on the roof slab 9 that closes the upper end opening of the reactor vessel 1, and a circulation pump 12 that circulates sodium sodium is installed on the roof slab 9. It is driven by a motor 13 and supplies primary sodium in the lower plenum 4 to a high-pressure plenum 15 via an inlet pipe 14 disposed on its discharge side.
中間熱交換器１１は、シュラウド１６と、その中心部に
配置した二次ナトリウム入口管１７と、二次ナトリウム
出口管１８と、二次ナトリウム入口管１７とシュラウド
１６との間に形成された熱交換器室内に配された多数本
の伝熱管１９と、これら各伝熱管１９を支持する上部管
板２０および下部管板２１とを備えており、シュラウド
１６には、隔壁２よりも上方位置に、−次ナトリウムを
吸い込むための流入孔２２が設けられているとともに、
隔壁２よりも下方位置に、−次ナトリウムを下部プレナ
ム４に送り出すための流出孔が設けられている。また、
シュラウド１６と二次ナトリウム入口管１７との間には
、前記伝熱管１９を貫通させるようにして、伝熱管支持
機ＨＩｉ２４．２５が交互に配置されている。The intermediate heat exchanger 11 includes a shroud 16 , a secondary sodium inlet pipe 17 disposed in the center thereof, a secondary sodium outlet pipe 18 , and heat generated between the secondary sodium inlet pipe 17 and the shroud 16 . The shroud 16 includes a large number of heat transfer tubes 19 disposed in the exchanger chamber, and an upper tube plate 20 and a lower tube plate 21 that support each of the heat transfer tubes 19. , - an inflow hole 22 for sucking in sodium is provided, and
At a position below the partition wall 2, an outflow hole is provided for sending secondary sodium to the lower plenum 4. Also,
Between the shroud 16 and the secondary sodium inlet pipe 17, heat exchanger tube supports HIi24, 25 are alternately arranged so as to penetrate the heat exchanger tubes 19.
以上の構成を有する従来のタンク型高速増殖炉において
、上部プレナム３内の一次ナトリウムは、流入孔２２を
通って中間熱交換器１１の中間熱交換器プレナム２６内
に流入し、伝熱管１９の内部を下部管板２１側へ流れ、
さらに流出孔２３を経て下部プレナム４内に流入する。In the conventional tank type fast breeder reactor having the above configuration, the primary sodium in the upper plenum 3 flows into the intermediate heat exchanger plenum 26 of the intermediate heat exchanger 11 through the inlet hole 22, and flows into the intermediate heat exchanger plenum 26 of the intermediate heat exchanger 11. Flows inside to the lower tube plate 21 side,
Further, it flows into the lower plenum 4 through the outflow hole 23 .
下部プレナム４内に流入した一次ナトリウムは、駆動モ
ータ１３によって駆動される循環ポンプ１２により入口
配管１４に送り込まれ、さらに高圧プレナム１５を経て
炉心燃料集合体６の中を上昇しつつ加熱される。加熱さ
れた一次ナトリウムは、炉心上部機構１０の下端に衝突
し、流れを反射方向に変え、再び流入孔２２を通って中
間熱交換器１１内に入る。The primary sodium that has flowed into the lower plenum 4 is sent into the inlet pipe 14 by the circulation pump 12 driven by the drive motor 13, and is further heated while rising through the high-pressure plenum 15 into the core fuel assembly 6. The heated primary sodium collides with the lower end of the core upper mechanism 10, changes the flow to the reflection direction, and enters the intermediate heat exchanger 11 through the inflow hole 22 again.
一方、二次ナトリウムは、第１０図に示すように、二次
ナトリウム入口管１７を下降し、管束入口部２７で外径
側に流れの向きを変えて管束部に流入する。さらに、伝
熱管１９を支持する伝熱管支持機構２４．２５間を、斜
行流成分を持って上方に流れ、管束出口部２８でアニユ
ラス流路を持つ二次ナトリウム出口管１８を通り、奪っ
た一次ナトリウムの熱を、図示しない二次系配管を介し
て外部に取出す。On the other hand, as shown in FIG. 10, the secondary sodium flows down the secondary sodium inlet pipe 17, changes its flow direction toward the outer diameter side at the tube bundle inlet section 27, and flows into the tube bundle section. Furthermore, the sodium flows upward between the heat exchanger tube support mechanisms 24 and 25 that support the heat exchanger tubes 19 with an oblique flow component, passes through the secondary sodium outlet pipe 18 having an annulus flow path at the tube bundle outlet section 28, and is taken away. The heat of the primary sodium is taken out to the outside via a secondary system piping (not shown).
第１１図は、前記管束部の管外流れを機械的に示したも
のである。FIG. 11 mechanically shows the flow outside the tube bundle.
第１１図からも明らかなように、管束入口部２７と管束
出口部２８では、流れの向きが水平成分を持っているた
め、伝熱管１９に振動力を与えることが考えられる。そ
こで従来は、管束入口部２７と管束出口部２８とに、前
記振動を防止するための振動防止板２９をそれぞれ設置
するようにしている。As is clear from FIG. 11, since the flow direction has a horizontal component at the tube bundle inlet portion 27 and tube bundle outlet portion 28, it is possible that vibration force is applied to the heat exchanger tubes 19. Therefore, conventionally, vibration prevention plates 29 are installed at the tube bundle inlet section 27 and the tube bundle outlet section 28 to prevent the vibrations.
ここで、−例として、１基の中間熱交換器１０に７００
０〜８０００本程度配置されている伝熱管９の管外流動
を考えると、振動防止板２９は、最も流動抵抗の小さい
、例えばエラグクレートタイプ（板を格子状に並べたも
の）で構成され、また伝熱管支持機構２４．２５は、エ
ラグクレートタイプの流路をダブて閉塞したもので構成
されている。しかも、第１１図に示すＢ、 Ｃスパン間
の伝熱管支持機構３１は、外胴側が流動抵抗か小さ（流
れ易い構成になっており、一方、Ｃ，Ｄスパン間の伝熱
管支持機構２４は、内胴側か流れ易い構成になっている
。そして、これら両伝熱管支持機構２４．２５は交互に
配されているので、管束部を流れる二次ナトリウムは、
管束部を斜行流成分を持って流れることにより、これに
より熱交換性能の向上が図られている。Here, - as an example, one intermediate heat exchanger 10 has 700
Considering the extra-tube flow of the heat exchanger tubes 9, of which about 0 to 8000 are arranged, the vibration prevention plate 29 is made of, for example, an Elag crate type (plates arranged in a lattice pattern), which has the lowest flow resistance. Further, the heat exchanger tube support mechanisms 24 and 25 are constructed by doubling and blocking an Elag crate type flow path. Moreover, the heat exchanger tube support mechanism 31 between the B and C spans shown in FIG. , the structure is such that it is easy to flow from the inner shell side.And since these two heat exchanger tube support mechanisms 24 and 25 are arranged alternately, the secondary sodium flowing through the tube bundle part is
By flowing through the tube bundle portion with an oblique flow component, heat exchange performance is improved.
（発明が解決しようとする課題）
前記従来のタンク型高速増殖炉において、中間熱交換器
１１では、管外におけるナトリウムが均一に流量配分さ
れて流れることが、熱交換効率を向上させる上で重要で
ある。(Problems to be Solved by the Invention) In the conventional tank-type fast breeder reactor, it is important for the intermediate heat exchanger 11 that sodium flows outside the tubes with a uniform flow rate distribution in order to improve heat exchange efficiency. It is.
ところが、斜行流成分を持って流れた場合、管束出口部
２８では、第１２図に示すような流速分布のバラ付きが
生じる。この原因としては、以下のことが考えられる。However, when the flow has an oblique flow component, variations in the flow velocity distribution occur at the tube bundle outlet section 28 as shown in FIG. 12. Possible causes of this are as follows.
すなわち、振動防止板２０直下の伝熱管支持機構２５は
、内胴側が、例えば流路閉塞ダブ付エッグクレートで構
成されて流動抵抗か大きくなっており、さらに外胴側が
、例えばエラグクレートで構成されて流動抵抗が小さく
なっている。このため、冷却材は伝熱管支持機構２５の
外胴側を多く流れることになる。That is, the heat exchanger tube support mechanism 25 directly below the vibration prevention plate 20 has an inner shell side made of, for example, an egg crate with a flow passage blocking dove, which increases flow resistance, and an outer shell side made of, for example, an elag crate. flow resistance is reduced. Therefore, a large amount of the coolant flows on the outer shell side of the heat transfer tube support mechanism 25.
一方、振動防止板２９は、流動抵抗が小さいため、外胴
沿いに流れてきたナトリウムは、そのまま振動防止板２
９を通過して上部管板２０に至り、上部管板２０の下面
を沿うように流れる。このため、管束出口部２８では、
振動防止板２９の上面側で流速が速く、下面側で流速が
遅くなる。On the other hand, since the anti-vibration plate 29 has a small flow resistance, the sodium flowing along the outer shell is directly transferred to the anti-vibration plate 29.
9 and reaches the upper tube sheet 20, and flows along the lower surface of the upper tube sheet 20. Therefore, at the tube bundle outlet section 28,
The flow velocity is high on the upper surface side of the vibration prevention plate 29, and the flow velocity is slow on the lower surface side.
このように、流速分布のバラ付きが大きくなっていると
、流速の速い部分での圧力損失が支配的となり、流速の
遅い部分で、渦を伴う圧力損失の増大が生じる。このた
め、中間熱交換器１１の二次側系の全体圧力損失が大き
くなる。そして、圧力損失が大きくなると、二次側のシ
ステム圧力を高くする必要かあり、二次ナトリウムポン
プ容量の増大、配管系の強度向上に伴う肉厚の増加等、
コスト高となる。また、流速分布のバラ付きのためによ
どみ部等ができると、中間熱交換器１１としての熱交換
性能の低下につながるとともに、温度分布不均一の原因
ともなり、伝熱管１つの座屈のおそれもある。As described above, when the variation in the flow velocity distribution becomes large, the pressure loss becomes dominant in the portions where the flow velocity is high, and the pressure loss associated with the vortices increases in the portions where the flow velocity is slow. Therefore, the overall pressure loss in the secondary side system of the intermediate heat exchanger 11 increases. When the pressure loss increases, it becomes necessary to increase the system pressure on the secondary side, increasing the capacity of the secondary sodium pump, increasing the wall thickness as the strength of the piping system increases, etc.
The cost will be high. In addition, if stagnation occurs due to variations in the flow velocity distribution, it will lead to a decrease in the heat exchange performance of the intermediate heat exchanger 11, and it will also cause uneven temperature distribution, which may cause buckling of one of the heat exchanger tubes. There is also.
本発明は、このような点を考慮してなされたもので、管
束出口部の流速分布を均一にして、よどみ部の発生防止
、二次ナトリウム系のコストダウン、熱交換効率および
健全性の向上を図ることかできるタンク型高速増殖炉を
提供することを目的とする。The present invention has been made with these points in mind, and it makes uniform the flow velocity distribution at the outlet of the tube bundle, prevents the occurrence of stagnation, reduces the cost of secondary sodium systems, and improves heat exchange efficiency and soundness. The purpose is to provide a tank-type fast breeder reactor that can achieve
（課題を解決するための手段）
本発明は、前記目的を達成する手段として、管束出口部
に、振動防止板を介しその下側の冷却材の流量を増大さ
せる手段を施すようにしたことを特徴とする。(Means for Solving the Problem) As a means for achieving the above object, the present invention provides a means for increasing the flow rate of the coolant below the outlet portion of the tube bundle via a vibration prevention plate. Features.
（作 用）
本発明に係るタンク型高速増殖炉においては、例えば振
動防止板の流動抵抗を大きくする等の方法により、振動
防止板を介しその下側の冷却材の流量の増大が図られる
。このため、管束出口部の流速分布が均一となり、よど
み部の発生防止および二次ナトリウム系のコストダウン
を図ることか可能となるとともに、熱交換効率の向上お
よび健全性の向上を図ることが可能となる。(Function) In the tank-type fast breeder reactor according to the present invention, the flow rate of the coolant below the vibration prevention plate is increased by, for example, increasing the flow resistance of the vibration prevention plate. Therefore, the flow velocity distribution at the outlet of the tube bundle becomes uniform, making it possible to prevent the occurrence of stagnation and reduce the cost of the secondary sodium system, as well as improve heat exchange efficiency and soundness. becomes.
（実施例）
以下、本発明を図面を参照して説明する。なお、本発明
は、中間熱交換器の管束出口部の構造にのみ特徴を有し
、その他の点については、第９図ないし第１２図に示す
従来のタンク型高速増殖炉と同一構成であるので、以下
その特徴部分についてのみ図示説明する。(Example) The present invention will be described below with reference to the drawings. The present invention is unique only in the structure of the tube bundle outlet of the intermediate heat exchanger, and other points have the same structure as the conventional tank-type fast breeder reactor shown in FIGS. 9 to 12. Therefore, only the characteristic parts thereof will be illustrated and explained below.
第１図は、本発明の第１実施例に係るタンク型高速増殖
炉の中間熱交換器を示すもので、図中、符号２８は上部
管板２０と上端の伝熱管支持機構２５との間に形成され
た管束出口部であり、この管束出口部２８には、二次ナ
トリウム出口管１８が接続され、また、管束出口部２８
内には、抵抗素子振動防止板３０か設置されている。FIG. 1 shows an intermediate heat exchanger for a tank-type fast breeder reactor according to a first embodiment of the present invention. The secondary sodium outlet pipe 18 is connected to the tube bundle outlet portion 28 , and the tube bundle outlet portion 28 is connected to the secondary sodium outlet pipe 18 .
A resistance element vibration prevention plate 30 is installed inside.
伝熱管支持機構２５は、第１図に網目を施して示す内胴
側が、第２図に示すように、エラグクレートタイプの支
持機構３１に閉塞用のダブ３２を設けた構成になってお
り、また、第１図に白抜きて示す外胴側が、第３図に示
すように、エラグクレートタイプの支持機構３１のみの
構成になっている。したがって、伝熱管支持機構２５は
、外胴側が流動抵抗が小さくナトリウムが流れ易い構造
となっている。The inner shell side of the heat exchanger tube support mechanism 25, which is shown with mesh in FIG. 1, has a structure in which a dove 32 for closing is provided on an erag crate type support mechanism 31, as shown in FIG. Further, the outer shell side shown in outline in FIG. 1 is composed of only an erug crate type support mechanism 31, as shown in FIG. 3. Therefore, the heat exchanger tube support mechanism 25 has a structure in which flow resistance is small on the outer shell side and sodium flows easily.
一方、抵抗素子振動防止板３０は、例えば第２図に示す
伝熱管支持機構２５の内胴側の構成と同様、エラグクレ
ートタイプの支持機構にタブを設けた構成になっており
、エラグクレートタイプの支持機構のみで構成される従
来の振動防止板２９（第１１図参照）に比較し、流動抵
抗が大きくなるようになっている。On the other hand, the resistance element vibration prevention plate 30 has a configuration in which a tab is provided on an Elag crate type support mechanism, similar to the configuration of the inner shell side of the heat exchanger tube support mechanism 25 shown in FIG. 2, for example. Compared to the conventional anti-vibration plate 29 (see FIG. 11) which is composed of only a supporting mechanism, the flow resistance is increased.
次に、本実施例の作用について説明する。Next, the operation of this embodiment will be explained.
伝熱管支持機構２５は、外胴側の流動抵抗か小さいため
、外胴側を多くの冷却材が流れることになるが、抵抗素
子振動防止板３０は、流動抵抗が大きいので、抵抗素子
振動防止板３０を通過する冷却材の量が少なくなり、そ
の分抵抗素子振動防止板３０の下側に多くの冷却材か流
れることになる。このため、抵抗素子振動防止板３０上
下の流量配分か均一化され、管束出口部２８の流量分布
が均一となり、よどみ部の発生防止および二次ナトリウ
ム系のコストダウンを図ることかできる。The heat exchanger tube support mechanism 25 has a small flow resistance on the outer shell side, so a large amount of coolant flows through the outer shell side, but the resistance element vibration prevention plate 30 has a large flow resistance, so it prevents resistance element vibration. The amount of coolant passing through the plate 30 decreases, and a correspondingly large amount of coolant flows under the resistive element vibration prevention plate 30. Therefore, the flow rate distribution above and below the resistance element vibration prevention plate 30 is made uniform, and the flow rate distribution at the tube bundle outlet section 28 is made uniform, making it possible to prevent the occurrence of stagnation and reduce the cost of the secondary sodium system.
なお、前記実施例では、抵抗素子振動防止板３０を、エ
ラグクレートタイプの支持機構にダブを設けて構成した
ものについて説明したか、ダブに代えて、流動抵抗素子
フローホール付支持機構等を用いるようにしてもよい。In the above embodiments, the resistance element vibration prevention plate 30 is constructed by providing a dove in an Elag crate type support mechanism, or instead of the dove, a support mechanism with a flow resistance element flow hole or the like is used. You can do it like this.
また、前記実施例では、抵抗素子振動防止板３０の流動
抵抗率か全面同一の場合について説明したか、内胴側か
ら外胴側に段階的に流動抵抗率が順次増大するようなも
のを用いるようにしてもよい。Furthermore, in the above embodiments, the case where the flow resistivity of the resistance element vibration prevention plate 30 is the same over the entire surface is explained, or the flow resistivity increases stepwise from the inner shell side to the outer shell side. You can do it like this.
第４図および第５図は、本発明の第２実施例を示すもの
で、前記第１実施例における抵抗素子振動防止板３０に
代え、抵抗素子振動防止板４ｏを用いるようにしたもの
である。4 and 5 show a second embodiment of the present invention, in which a resistance element vibration prevention plate 4o is used in place of the resistance element vibration prevention plate 30 in the first embodiment. .
すなわち、この抵抗素子振動防止板４ｏは、第４図に網
目を施して示す外胴側のみが、第５図に示すようにエラ
グクレートタイプの支持！ｕ４４１に閉塞用のダブ４２
を設けた構造になっており、内胴側は、エラグクレート
タイプの支持機構のみの構成となっている。That is, in this resistance element vibration prevention plate 4o, only the outer shell side shown with mesh in FIG. 4 is supported by an erug crate type as shown in FIG. 5! Dub 42 for occlusion on u441
It has a structure where the inner shell side has only an Elag crate type support mechanism.
このように、抵抗素子振動防止板４ｏを通過する冷却材
の流量は、外胴側が最も多いので、この部分にダブ４２
を設けて流動抵抗を増大させれば、抵抗素子振動防止板
４ｏの上側に流入する冷却材の流量が制限され、前記第
１実施例と同様の効果が期待できる。In this way, the flow rate of the coolant passing through the resistance element vibration prevention plate 4o is highest on the outer shell side, so the dove 42 is placed in this part.
If the flow resistance is increased by providing this, the flow rate of the coolant flowing into the upper side of the resistance element vibration prevention plate 4o is restricted, and the same effect as in the first embodiment can be expected.
第６図および第７図は、本発明の第３実施例を示すもの
で、前記第１実施例における抵抗素子振動防止板３０に
代えて抵抗素子振動防止板５ｏを用い、かつ角部パッド
５３を設けるようにしだものである。6 and 7 show a third embodiment of the present invention, in which a resistance element vibration prevention plate 5o is used in place of the resistance element vibration prevention plate 30 in the first embodiment, and a corner pad 53 is used. It is designed to provide a.
すなわち、抵抗素子振動防止板５０は、第７図に示すよ
うに、エラグクレートタイプの支持機構５１の全域に、
閉塞用のダブ５２を設けた構造をなし、かつ内胴側に向
かって上り勾配をなしている。また、角部パッド５３は
、第６図に示すように、断面三角形状をなし、上部管板
２０下面の外胴側の角部に設置されている。That is, as shown in FIG.
It has a structure in which a dove 52 for closure is provided, and has an upward slope toward the inner body side. Further, as shown in FIG. 6, the corner pad 53 has a triangular cross section and is installed at a corner of the lower surface of the upper tube plate 20 on the outer body side.
このように、抵抗素子振動防止板５０が傾斜しているの
で、冷却材を、抵抗素子振動防止板５０の下側によりス
ムースに案内することができ、流量配分をより均一化す
ることかできる。また、角部パッド５３により、よどみ
部の発生を確実に防止でき、抵抗素子振動防止板５０の
上側の流動を、より均一化できる。Since the resistance element vibration prevention plate 50 is thus inclined, the coolant can be guided more smoothly under the resistance element vibration prevention plate 50, and the flow rate distribution can be made more uniform. Furthermore, the corner pads 53 can reliably prevent the occurrence of stagnation, and can make the flow above the resistance element vibration prevention plate 50 more uniform.
第８図は、本発明の第４実施例を示すもので、前記第１
実施例における抵抗素子振動防止板３０に代え、従来と
同一の振動防止板２９を用い、かつその出口部分に、多
孔抵抗板６１．６２をそれぞれ設けるようにしたもので
ある。FIG. 8 shows a fourth embodiment of the present invention.
In place of the resistance element vibration prevention plate 30 in the embodiment, the same vibration prevention plate 29 as in the conventional example is used, and porous resistance plates 61 and 62 are provided at the outlet portions of the vibration prevention plate 29, respectively.
すなわち、振動防止板２９の上側に配された多孔抵抗板
６１は、振動防止板２９の下側に配された多孔抵抗板６
２に比較して、流動抵抗係数が大きく設定されている。That is, the porous resistance plate 61 arranged above the vibration prevention plate 29 is the same as the porous resistance plate 6 arranged below the vibration prevention plate 29.
Compared to No. 2, the flow resistance coefficient is set larger.
このように、上側の多孔抵抗板６１は、下側の多孔抵抗
板６２に比較して、冷却材の流動抵抗が大きいので、こ
れにより、振動防止板２９を通過する冷却材の流量か制
限され、その分、振動防止板２つの下側を流れる冷却材
の流量が多くなる。As described above, since the upper porous resistance plate 61 has a larger flow resistance of the coolant than the lower porous resistance plate 62, this limits the flow rate of the coolant passing through the vibration prevention plate 29. , the flow rate of the coolant flowing under the two anti-vibration plates increases accordingly.
このため、前記第１実施例と同様の効果が期待てきる。Therefore, the same effects as in the first embodiment can be expected.
以上説明したように本発明は、管束出口部に、振動防止
板を介しその下側の冷却材の流量を増大させる手段を施
すようにしているので、管束出口部の流速分布が均一と
なり、よどみ部の発生を防止できるとともに、二次ナト
リウム系のコストダウンを図ることができ、また熱交換
効率の向上および健全性の向上を図ることができる。As explained above, in the present invention, the tube bundle outlet section is provided with a means for increasing the flow rate of the coolant below through the vibration prevention plate, so that the flow velocity distribution at the tube bundle outlet section becomes uniform and stagnation is prevented. In addition, it is possible to reduce the cost of the secondary sodium system, and also to improve heat exchange efficiency and soundness.
第１図は本発明の第１実施例に係るタンク型高速増殖炉
の中間熱交換器を示す要部構成図、第２図および第３図
は伝熱管支持機構の構成をそれぞれ示す説明図、第４図
は本発明の第２実施例を示す第１図相当図、第５図は第
４図の抵抗素子振動防止板の構成を示す説明図、第６図
は本発明の第３実施例を示す第１図相当図、第７図は第
６図の抵抗素子振動防止板の構成を示す説明図、第８図
は本発明の第４実施例を示す第１図相当図、第９図は従
来のタンク型高速増殖炉を示す断面図、第１０図は第９
図の中間熱交換器の詳細図、第１１図は従来の中間熱交
換器における管束部の管外流れを機械的に示す説明図、
第１２図は従来の管束出口部における冷却材の流速分布
を示す説明図である。
１・・・原子炉容器、２・・・隔壁、３・・・上部プレ
ナム、４・・・下部プレナム、１１・・・中間熱交換器
、１９・・・伝熱管、２０・・・上部管板、２１・・・
下部管板、２４．２５・・・伝熱管支持機構、２７・・
・管束入口部、２８・・・管束出口部、２９・・・振動
防止板、３０．４０．５０・・抵抗素子振動防止板、６
１．６２・・・多孔抵抗板。FIG. 1 is a main part configuration diagram showing an intermediate heat exchanger of a tank-type fast breeder reactor according to a first embodiment of the present invention, FIGS. 2 and 3 are explanatory diagrams showing the configuration of a heat exchanger tube support mechanism, respectively, FIG. 4 is a diagram corresponding to FIG. 1 showing a second embodiment of the present invention, FIG. 5 is an explanatory diagram showing the configuration of the resistive element vibration prevention plate of FIG. 4, and FIG. 6 is a third embodiment of the present invention. FIG. 7 is an explanatory diagram showing the configuration of the resistance element vibration prevention plate of FIG. 6, FIG. 8 is a diagram equivalent to FIG. 1 showing the fourth embodiment of the present invention, and FIG. 9 is a diagram equivalent to FIG. is a cross-sectional view showing a conventional tank-type fast breeder reactor, and Fig.
11 is an explanatory diagram mechanically showing the flow outside the tube bundle in the conventional intermediate heat exchanger,
FIG. 12 is an explanatory diagram showing the flow velocity distribution of coolant at the exit portion of a conventional tube bundle. DESCRIPTION OF SYMBOLS 1... Reactor vessel, 2... Partition wall, 3... Upper plenum, 4... Lower plenum, 11... Intermediate heat exchanger, 19... Heat exchanger tube, 20... Upper tube Board, 21...
Lower tube plate, 24.25... Heat exchanger tube support mechanism, 27...
- Tube bundle inlet section, 28... Tube bundle outlet section, 29... Vibration prevention plate, 30.40.50... Resistance element vibration prevention plate, 6
1.62...Porous resistance plate.
Claims (1)
より上部プレナムと下部プレナムとに区分して一次冷却
材を循環させるとともに、原子炉容器内に、前記隔壁を
貫通して中間熱交換器を配置し、この中間熱交換器内で
、伝熱管を介し一次冷却材と二次冷却材との熱交換を行
なうとともに、二次冷却材の前記伝熱管の管束入口部お
よび管束出口部に、振動防止板をそれぞれ設置したタン
ク型高速増殖炉において、前記管束出口部に、振動防止
板を介しその下側の冷却材の流量を増大させる手段を施
したことを特徴とするタンク型高速増殖炉。The inside of the reactor vessel, which houses the reactor core and the primary coolant, is divided into an upper plenum and a lower plenum by a partition wall to circulate the primary coolant, and an intermediate heat exchanger is inserted into the reactor vessel by penetrating the partition wall. In this intermediate heat exchanger, heat is exchanged between the primary coolant and the secondary coolant through the heat transfer tubes, and vibration is applied to the tube bundle inlet and tube bundle outlet of the heat transfer tubes of the secondary coolant. 1. A tank-type fast breeder reactor, each of which is provided with a prevention plate, characterized in that the tube bundle outlet section is provided with means for increasing the flow rate of the coolant below the vibration prevention plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2171482A JP2937423B2 (en) | 1990-06-29 | 1990-06-29 | Tank type fast breeder reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2171482A JP2937423B2 (en) | 1990-06-29 | 1990-06-29 | Tank type fast breeder reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0460500A true JPH0460500A (en) | 1992-02-26 |
| JP2937423B2 JP2937423B2 (en) | 1999-08-23 |
Family
ID=15923926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2171482A Expired - Fee Related JP2937423B2 (en) | 1990-06-29 | 1990-06-29 | Tank type fast breeder reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2937423B2 (en) |
-
1990
- 1990-06-29 JP JP2171482A patent/JP2937423B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2937423B2 (en) | 1999-08-23 |
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