JPH0514876B2 - - Google Patents
Info
- Publication number
- JPH0514876B2 JPH0514876B2 JP59224750A JP22475084A JPH0514876B2 JP H0514876 B2 JPH0514876 B2 JP H0514876B2 JP 59224750 A JP59224750 A JP 59224750A JP 22475084 A JP22475084 A JP 22475084A JP H0514876 B2 JPH0514876 B2 JP H0514876B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- main
- fluid
- thickness
- guide part
- 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
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)
- Branch Pipes, Bends, And The Like (AREA)
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は原子炉主蒸気逃し管のクエンチヤに関
するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a quencher for a nuclear reactor main steam relief pipe.
「従来の技術」
第３図は、沸騰水型原子炉の例を示すもので、
原子炉圧力容器１０あるいは主蒸気管１１の蒸気
圧力が異常に上昇した場合に、圧力開放弁１２が
作動し、蒸気を主蒸気逃し管２を経由して、サプ
レツシヨンチエンバ１３の冷却水Ｗ中に放出して
凝縮させ、圧力の上昇を抑制して施設の健全性を
維持するようにしている。そして、前記主蒸気逃
し管２の先端には、第４図に示すようなＴクエン
チヤと称される蒸気放出装置１４が設けられてい
る。この蒸気放出装置１４は、主蒸気逃し管２を
経由する蒸気をレジユーサ３から、ラムズヘツド
１に導入して分岐させ、一対の放出管（クエンチ
ヤアーム）６の多数の蒸気放出口から冷却水Ｗに
放出することによつて、蒸気の運動エネルギを吸
収するとともに、蒸気の冷却水Ｗ中の凝縮、拡散
を促進するものである。また、ラムズヘツド１の
部分は、第５図イに示すように、エルボ１５の一
部をＸーＹ線で切断して、切断した一対のエルボ
１５を第５図ロに示すように溶接して二股管状に
するとともに、さらに、第５図ハ，ニに示すよう
に前の溶接部１６をまたぐように補強板１７を取
り付けて、欠点となり易い部分を補強した一体構
造となつている。"Prior art" Figure 3 shows an example of a boiling water reactor.
When the steam pressure in the reactor pressure vessel 10 or the main steam pipe 11 rises abnormally, the pressure relief valve 12 operates, and the steam is passed through the main steam relief pipe 2 to the cooling water of the suppression chamber 13. It is discharged into W and condensed to suppress the rise in pressure and maintain the health of the facility. A steam release device 14 called a T-quencher as shown in FIG. 4 is provided at the tip of the main steam relief pipe 2. This steam release device 14 introduces steam passing through a main steam relief pipe 2 from a registrar 3 to a ram's head 1 and branches it, and from a large number of steam release ports of a pair of release pipes (quencher arms) 6 coolant water W. By releasing the steam into the cooling water W, the kinetic energy of the steam is absorbed and the condensation and diffusion of the steam in the cooling water W is promoted. The ram's head 1 is made by cutting a part of the elbow 15 along the X-Y line as shown in Figure 5A, and welding the cut pair of elbows 15 together as shown in Figure 5B. In addition to having a bifurcated tubular shape, a reinforcing plate 17 is attached so as to straddle the previous welded part 16 as shown in FIGS.
「発明が解決しようとする問題点」
しかしながら、このような構造を有するクエン
チヤであると、エルボ１５の管壁の厚さが均一で
あることと、溶接部１６によつて連結されている
こととが欠陥の発生原因となり易い。すなわち、
放出流体（高温蒸気と水との気液混合流体等）が
ラムズヘツドに衝突したときの発生応力は、一対
をなすエルボ１５の形状や寸法誤差によつて、例
えば左右が不平衡となる可能性があり、また、各
溶接部１６等で構造上の不連続部が生じているた
めに、その付近が高応力発生部となり易いが、こ
れらの欠点をすべて補強板１７で保障できない等
の問題点がある。"Problems to be Solved by the Invention" However, with a quencher having such a structure, it is necessary that the tube wall of the elbow 15 has a uniform thickness and that it is connected by the welded part 16. is likely to cause defects. That is,
The stress generated when the released fluid (vapor-liquid mixed fluid of high-temperature steam and water, etc.) collides with the ram's head may be unbalanced between the left and right sides, for example, due to the shape and dimensional errors of the pair of elbows 15. In addition, since there are structural discontinuities at each welding part 16 etc., the vicinity tends to become a high stress generation area, but there are problems such as the fact that all of these defects cannot be covered by the reinforcing plate 17. be.
本発明は、これら問題点を有効に解決するとと
もに、高応力発生部分の断面性能を高めて、高応
力発生部分の低減、応力の平滑化、コストダウン
等を図ることを目的とするものである。 The present invention aims to effectively solve these problems, improve the cross-sectional performance of high stress generating parts, reduce high stress generating parts, smooth stress, reduce costs, etc. .
「問題点を解決するための手段」
このような目的を達成するため本発明は、主蒸
気逃し管に接続されて流体を導入する主管と、該
主管に対して左右両方向に向けた状態に接続され
て一対をなす分岐管とが一体成形されるととも
に、該一対の分岐管の中間部に位置する管壁内面
が、主管と対向する方向に突出して流体を分岐さ
せる案内部とされ、該案内部近傍の管壁は、中間
部が左右両側よりも相対的に厚肉状でこれらの間
の管壁厚さに緩やかな変化が付与されている構成
の原子炉主蒸気逃し管のクエンチヤとしている。"Means for Solving the Problems" In order to achieve such an object, the present invention provides a main pipe connected to a main steam relief pipe to introduce fluid, and a main pipe connected to the main pipe so as to be oriented in both left and right directions with respect to the main pipe. and a pair of branch pipes are integrally molded, and the inner surface of the pipe wall located at the middle part of the pair of branch pipes is used as a guide part that protrudes in a direction facing the main pipe to branch the fluid, and the guide part The pipe wall near the main steam relief pipe is used as a quencher for the reactor main steam relief pipe, where the middle part is relatively thicker than the left and right sides, and the thickness of the pipe wall between these parts varies gradually. .
「実施例」
以下、本発明のクエンチヤの一実施例を第１図
ないし第３図に基づいて説明する。図中符号１で
示すラムズヘツドは、主蒸気逃し管２に連設され
るレジユーサ３と、該レジユーサ３から流体を導
入する主管４と、該主管４に連設されてその先端
に対向して流体を分岐させる案内部５と、該案内
部５により振り分けられた流体を放出管６に送り
込むための分岐管７とを一体成形することによつ
て構成される。従つて、第４図に示した従来例の
レジユーサ３の部分は、ラムズヘツド１に一体に
組み込まれて、第５図に示したような溶接部１６
が全くない構造となつている。Embodiment An embodiment of the quencher of the present invention will be described below with reference to FIGS. 1 to 3. The ram's head indicated by reference numeral 1 in the figure includes a reducer 3 connected to a main steam relief pipe 2, a main pipe 4 that introduces fluid from the reducer 3, and a main pipe 4 connected to the main pipe 4 and facing the tip thereof. It is constructed by integrally molding a guide part 5 for branching the fluid, and a branch pipe 7 for sending the fluid distributed by the guide part 5 to the discharge pipe 6. Therefore, the portion of the conventional reducer 3 shown in FIG.
The structure is such that there is no
そして、第１図に示すように、レジユーサ３と
主管４とは、それぞれテーパ管状で兼用した形状
とされるとともに、管壁８が下流に行くにしたが
つて徐々に厚くなるように設定される。したがつ
て、主管４と分岐管７との間に位置している管壁
８は、ラムズヘツド１の開口部３ａよりも相対的
に厚肉状で、管壁８の厚さが緩やかに連続的に変
化するように形成されている。 As shown in FIG. 1, the reducer 3 and the main pipe 4 each have a tapered tubular shape, and are set so that the pipe wall 8 gradually becomes thicker as it goes downstream. . Therefore, the pipe wall 8 located between the main pipe 4 and the branch pipe 7 is relatively thicker than the opening 3a of the ram's head 1, and the thickness of the pipe wall 8 is gradually continuous. It is formed to change.
また、分岐管７は、第１図に示すように曲管状
となつているが、曲がりの最外側となつている外
表面の形状がO1を中心とする円弧R1で表される
とき、管内面の形状は、O1よりも寸法Ｌだけ外
れたO2を中心とする円弧R2で表される関係に設
定されて、開口部７ａが薄肉状とされるととも
に、曲がりの最内側となつている内表面の形状
は、O2を中心とする円弧R3に設定され、その外
表面形状は、前述した管壁８の厚さの関係となる
ように設定されている。 Further, the branch pipe 7 has a curved pipe shape as shown in FIG. 1, but when the shape of the outermost surface of the bend is represented by an arc R 1 centered on O 1 , The shape of the inner surface of the tube is set in a relationship represented by an arc R 2 centered on O 2 which is off by a dimension L from O 1 , so that the opening 7a is made thin and the innermost part of the bend is The shape of the curved inner surface is set to be a circular arc R 3 centered on O 2 , and the shape of the outer surface is set to have the relationship with the thickness of the tube wall 8 described above.
この結果、一対の分岐管７の中間部に位置する
管壁内面は、主管４と対向する方向に突出して案
内部５を形成するが、案内部５の近傍における管
壁８は、第１図の下部に示すように、中間部が左
右両側よりも相対的に厚肉状に形成され、これら
の間の管壁８の厚さに緩やかな変化が付与された
状態となる。 As a result, the inner surface of the pipe wall located at the intermediate part of the pair of branch pipes 7 protrudes in the direction facing the main pipe 4 to form the guide part 5, but the pipe wall 8 in the vicinity of the guide part 5 is As shown in the lower part of , the middle part is relatively thicker than the left and right sides, and the thickness of the tube wall 8 between these parts is gradually changed.
一方、符号９は、ラムズヘツド１の開口部３
ａ・７ａに予め余分に設けられた短管であり、ラ
ムズヘツド１の耐圧試験時に利用された後、切削
加工により除去され、各開口部３ａ・７ａと主蒸
気逃し管２および放出管６とが溶接により接続さ
れて、クエンチヤを構成するものである。 On the other hand, reference numeral 9 indicates the opening 3 of the ram's head 1.
This is an extra short pipe provided in advance in the openings 3a and 7a, and after being used during the pressure test of the ram's head 1, it is removed by cutting, and the openings 3a and 7a are connected to the main steam relief pipe 2 and the discharge pipe 6. They are connected by welding to form a quencher.
このような構造を有するラムズヘツド１である
と、第４図に示す圧力開放弁１２が作動したとき
の放出流体は、レジユーサ３、主管４を経由して
案内部５に衝突し、左右に振り分けられて分岐管
７から放出管６に誘導されるとともに、案内部５
その他の部分を変形させる力となる。このとき、
管壁８の途中に溶接部が存在せず、厚さが緩やか
に変化して、従来技術で説明した構造上の不連続
部の発生を抑制するものとなつているので、放出
流体が衝突したときの力は、各部に分散されて、
応力の集中が起こりにくく、一部分だけが高い応
力となる現象の発生を低減できる。したがつて、
管壁８を応力値に対応して厚さの変化をつける等
により処理することが可能となる。 With the ram's head 1 having such a structure, the released fluid when the pressure release valve 12 shown in FIG. is guided from the branch pipe 7 to the discharge pipe 6, and the guide part 5
It acts as a force that deforms other parts. At this time,
There is no welded part in the middle of the pipe wall 8, and the thickness changes gradually to suppress the occurrence of structural discontinuities as described in the prior art, so that the released fluid does not collide. The power of time is distributed to each part,
Stress concentration is less likely to occur, and it is possible to reduce the occurrence of a phenomenon where stress is high in only one part. Therefore,
It becomes possible to process the tube wall 8 by, for example, changing the thickness in accordance with the stress value.
なお、ラムズヘツド１の案内部５に連続する分
岐管７の内面形状は、一実施例では、円弧R2と
したが、流体力学上、振り分け効率や発生応力の
点を考慮して、例えば第１図鎖線で示す案内部
５′とする等、変更可能であることは勿論である。 Note that the inner surface shape of the branch pipe 7 that is continuous with the guide portion 5 of the ram's head 1 is an arc R2 in one embodiment, but in consideration of fluid dynamics, distribution efficiency and generated stress, for example, the first It goes without saying that modifications can be made, such as using the guide portion 5' shown by the chain line in the figure.
「発明の効果」
以上説明したように本発明によれば、次のよう
な効果を奏することができる。"Effects of the Invention" As explained above, according to the present invention, the following effects can be achieved.
(i) 左右一対をなす分岐管の中間部に、主管の対
向方向に突出した案内部が形成されるととも
に、その近傍管壁に、中間部が厚肉状で他の部
分がこれよりも薄肉状となる緩やかな変化が付
与されているので、構造上の不連続部を少なく
して高応力発生を防止することができる。(i) A guide part protruding in the direction opposite to the main pipe is formed in the middle part of a pair of left and right branch pipes, and a guide part is formed in the vicinity of the guide part, with the middle part having a thick wall and the other part having a thin wall. Since a gradual change is imparted to form a shape, it is possible to reduce structural discontinuities and prevent high stress from occurring.
(ii) 応力値に対応して管壁の厚さを設定すること
により、ラムズヘツドの構造が単純化されコス
トダウンを図ることができる。(ii) By setting the thickness of the tube wall in accordance with the stress value, the structure of the ram's head can be simplified and costs can be reduced.
(iii) 管壁の厚さを自在に設定することができるた
め、従来例のエルボを組み合わせた構造から脱
却し得て、溶接部や補強板を省略することがで
きるとともに、放出流体の振り分けを円滑に
し、発生応力を均一化させる等の高性能化を図
ることができる。(iii) Since the thickness of the pipe wall can be freely set, it is possible to break away from the conventional structure combining elbows, eliminate welds and reinforcing plates, and improve the distribution of discharged fluid. It is possible to improve performance by making the process smoother and making the generated stress more uniform.
第１図および第２図は本発明のクエンチヤの一
実施例を示すもので、第１図は縦断面図、第２図
は斜視図、第３図は沸騰水型原子炉の概略構成を
示す縦断面図、第４図は第３図の鎖線で示す部
分を拡大して示す従来例の説明図、第５図は従来
のクエンチヤの構造工程例の説明図である。
１……ラムズヘツド、２……主蒸気逃し管、３
……レジユーサ、４……主管、５……案内部、６
……放出管、７……分岐管、８……管壁。
Figures 1 and 2 show an embodiment of the quencher of the present invention, with Figure 1 being a longitudinal sectional view, Figure 2 being a perspective view, and Figure 3 being a schematic diagram of a boiling water reactor. FIG. 4 is an explanatory diagram of a conventional example showing an enlarged view of the portion indicated by the chain line in FIG. 3, and FIG. 5 is an explanatory diagram of an example of the structural steps of a conventional quencher. 1...Ramshead, 2...Main steam relief pipe, 3
...Register, 4...Main manager, 5...Guidance section, 6
...Discharge pipe, 7... Branch pipe, 8... Pipe wall.
Claims (1)
主管４と、該主管に対して左右両方向に向けた状
態に接続されて一対をなす分岐管７とが一体成形
されるとともに、該一対の分岐管の中間部に位置
する管壁内面が、主管と対向する方向に突出して
流体を分岐させる案内部５とされ、該案内部近傍
の管壁８は、中間部が左右両側よりも相対的に厚
肉状でこれらの間の管壁厚さに緩やかな変化が付
与されていることを特徴とする原子炉主蒸気逃し
管のクエンチヤ。1 A main pipe 4 that is connected to the main steam relief pipe 2 and introduces fluid, and a pair of branch pipes 7 that are connected in both left and right directions with respect to the main pipe are integrally molded. The inner surface of the pipe wall located at the middle part of the branch pipe is used as a guide part 5 that protrudes in the direction opposite to the main pipe and branches the fluid, and the pipe wall 8 near the guide part has a middle part that is relatively smaller than the left and right sides. A quencher for a main steam relief pipe of a nuclear reactor, characterized in that the pipe wall thickness between the two is thick and the thickness of the pipe wall varies gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59224750A JPS61102589A (en) | 1984-10-25 | 1984-10-25 | Quencher of reactor main steam relief pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59224750A JPS61102589A (en) | 1984-10-25 | 1984-10-25 | Quencher of reactor main steam relief pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61102589A JPS61102589A (en) | 1986-05-21 |
| JPH0514876B2 true JPH0514876B2 (en) | 1993-02-26 |
Family
ID=16818648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59224750A Granted JPS61102589A (en) | 1984-10-25 | 1984-10-25 | Quencher of reactor main steam relief pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61102589A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0953782A (en) * | 1995-08-11 | 1997-02-25 | Toa Koukiyuu Keishiyu Valve Seizo Kk | Pipe fittings |
| JP4516339B2 (en) * | 2004-03-26 | 2010-08-04 | 積水化学工業株式会社 | Synthetic resin joint portion structure and synthetic resin joint using the synthetic resin joint portion structure |
| CN101813225B (en) * | 2010-05-25 | 2011-06-15 | 西安建筑科技大学 | Low-resistance square pant tee joint |
| DE102012201129A1 (en) * | 2012-01-26 | 2013-08-01 | Areva Np Gmbh | Device for separating a fluid mass flow |
-
1984
- 1984-10-25 JP JP59224750A patent/JPS61102589A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61102589A (en) | 1986-05-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |