JPS5875093A - Vent header protecting device for reactor container - Google Patents
Vent header protecting device for reactor containerInfo
- Publication number
- JPS5875093A JPS5875093A JP56174005A JP17400581A JPS5875093A JP S5875093 A JPS5875093 A JP S5875093A JP 56174005 A JP56174005 A JP 56174005A JP 17400581 A JP17400581 A JP 17400581A JP S5875093 A JPS5875093 A JP S5875093A
- Authority
- JP
- Japan
- Prior art keywords
- vent
- vent header
- header
- water
- downcomer
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000009835 boiling Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims 1
- 239000012779 reinforcing material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000007654 immersion 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
- 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】
−この発明は、沸騰水１１原子炉を格納する原子炉格納
容器のサブレッジロンチェンバ内に設ｆｆ６れたベント
ヘッダに、サブレッジロンチェンバ内の水が衡突する仁
とを防止するための保Ｓ装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION - This invention is a system in which water in a subledger chamber collides with a vent header ff6 installed in the subledger chamber of a reactor containment vessel that stores a boiling water 11 nuclear reactor. This invention relates to an S protection device for preventing damage.
原子力発電所においては安全性を考慮して多電の安全設
備を用意するとともに、事故原因となる可能性がある部
分にも十分な対策が施されている。At nuclear power plants, safety equipment is provided with multiple electric currents in consideration of safety, and sufficient measures are also taken for areas that may cause accidents.
第１図は沸騰水ｍ原子炉における安全設備の従来例を示
すもので、原子炉格納容器内の圧力抑制を目的としたも
のである。すなわち、沸騰水型原子炉１のサブレッジ１
ンチエンバ２内に所定量の水Ｗを貯えておき、配管破断
に起因する蒸気がドライウェル３内に放出され九とき、
この蒸気を多数のベント管４．４から環状のベントへラ
ダ５に導いて減圧して圧力を平均化し、次いで一対のダ
ウンカマ６ｔ−ｍｌ、てサプレッションチェンバ２内の
水Ｗ中に放出するととによシ、蒸気を冷却して液化させ
蒸気の体積を減少させることによってドライウェル３内
の圧力上昇を抑えるようにしたものである。FIG. 1 shows a conventional example of safety equipment for a boiling water nuclear reactor, which is intended to suppress the pressure inside the reactor containment vessel. That is, subledge 1 of boiling water reactor 1
A predetermined amount of water W is stored in the chamber 2, and when the steam caused by the pipe breakage is released into the dry well 3,
This steam is led to the rudder 5 from a number of vent pipes 4.4 to an annular vent, the pressure is reduced and the pressure is averaged, and then a pair of downcomers 6 t-ml are used to release the steam into the water W in the suppression chamber 2. In addition, the pressure increase in the dry well 3 is suppressed by cooling and liquefying the steam to reduce the volume of the steam.
しかしながら、ドライウェル３内の蒸気圧の上昇は、前
述したように配管破断に起因するので急激な変化をなす
。そして蒸気が急激にサブレッジ冒ンチェンバ２に貯−
見られ走水Ｗ中に放出されると、ダウンカマ６の下端付
近で水Ｗが各方向に噴き上げられ、その一部がベントヘ
ッダ５およびペン）管４． ４の下部に衝突して、ベン
トヘッダ５およびベント管４．４の下面に大きな衝撃が
加わる。However, the rise in vapor pressure within the dry well 3 is caused by the pipe breakage, as described above, and therefore undergoes a rapid change. Then, steam suddenly accumulates in the subledge chamber 2.
When water is discharged during water running W, the water W is squirted in various directions near the lower end of the downcomer 6, and a portion of it is sprayed onto the vent header 5 and the pen pipe 4. 4, and a large impact is applied to the lower surface of the vent header 5 and the vent pipe 4.4.
この発明は前記背景に基づいてなされたもので、サプレ
ッションチェンバ内におけるベントヘッダに設けられた
一対のダウシカ１間に下方に湾曲した外面が形成された
保護装置を設けることによって、サプレッションチェン
バ内に貯えられり水力ベントヘッダおよびベント管に直
接衝突する仁とを防止する之ともに、水の噴き上げによ
る衝撃力を緩和させ、安全性をさらに高めることを目的
とするものである。This invention has been made based on the above background, and by providing a protection device having a downwardly curved outer surface between a pair of vent headers provided in a vent header in a suppression chamber, The purpose of this is to prevent water from colliding directly with the hydraulic vent header and vent pipe, as well as to reduce the impact force caused by water jetting up, thereby further increasing safety.
以下、この発明を第コ図〜第！図に示す一実施例に基づ
き説明する。なお、以下の説明中で、第２図に示し大従
来例と共通のものについては同一符号および同一名称を
用い、その詳細な説明を省略した。Below, this invention will be explained in Figures 1 to 3! An explanation will be given based on an example shown in the figure. In the following description, the same reference numerals and names will be used for the same parts as those in the conventional example shown in FIG. 2, and detailed description thereof will be omitted.
図面中符号７で示すものはこの発明に係る保護装置で、
補強材８を介してベントヘッダ５の下方の一対のダウン
カマ６．６の間に、全体の外面が下方に湾曲するように
ベントヘッダ５の長さ方向に沿って環状に配置したもの
である。仁の保護装置７は管状の支持部材９と、この支
持部材９の両側部に長さ方向に沿って、かつ、斜めに固
定された（第３図参照）一対のプレー）１０．１０とに
よって前述のように全体の外面が下方に湾曲した構成と
されている。また、前記支持部材９の両個部ニ雌、切欠
部１１，１１が形成され、これらの切欠部１１．１１に
支持部材９を相互に連結させる丸めの鍔１２．１！が形
成されてお〕、ボルト１３．１３・・・で連結すること
によって複数の保護装置７．７・・・を環状に連結する
ようになされている。なお、第２図および第３図に示す
ように相互に接続する部分はプレー）１０が省略されて
いるが、この理由は後述すゐ。What is indicated by the reference numeral 7 in the drawings is a protection device according to the present invention,
A pair of downcomers 6.6 below the vent header 5 are arranged in an annular shape along the length of the vent header 5 so that the entire outer surface is curved downward. The protection device 7 includes a tubular support member 9 and a pair of plates 10 and 10 fixed obliquely along the length on both sides of the support member 9 (see FIG. 3). As mentioned above, the entire outer surface is curved downward. Further, both individual parts of the support member 9 are formed with notches 11, 11, and a rounded collar 12.1 that interconnects the support member 9 to these notches 11.11! are formed] and are connected by bolts 13, 13, . . . to connect the plurality of protection devices 7, 7, . . . in a ring shape. Note that, as shown in FIGS. 2 and 3, the interconnecting portions (10) are omitted, but the reason for this will be explained later.
前記補強材８．８の上端には前記ベントヘッダ５の下表
面の形状に合致するように鍔１４が形成され、また、両
側部には、ダウンカーｆ６．６０内側の形状に合致する
ように鍔１５．１５が形成され、中央部には、前記保護
装置７を貫通させる支持孔１６が設けられている。そし
て、ベントヘッダ５およびダウンカマ６．６保護装置７
．７、補−強材８．８・・・はそれぞれ溶接によって一
体に固定され、保護装置７．７−・・をベントヘッダ５
の下方に、その長さ方向に沿って環状に配置するように
なっている。A collar 14 is formed at the upper end of the reinforcing member 8.8 to match the shape of the lower surface of the vent header 5, and a collar 14 is formed on both sides to match the shape of the inside of the down car f6.60. A collar 15.15 is formed, and a support hole 16 through which the protection device 7 passes is provided in the central part. and vent header 5 and downcomer 6.6 protection device 7
．． 7, reinforcing members 8.8... are each fixed together by welding, and protective devices 7.7... are attached to the vent header 5.
They are arranged in an annular shape along the length of the pipes below the pipes.
ｉ九、符号１７．１７・・・で示すものは補強材で、鍔
１８・・・および１９・・・をダウンカマ６．６の外壁
およびベントヘッダ５の外壁にそれぞれ溶接してダウン
カマ６．６とベントヘッダ５との連結を補強するように
し大ものである。さらに符号２０で示すものは前記ダウ
ンカマ６．６の下端部に固定されたスペーサで、このス
ペーサによって、ダウンカマ６．６の下端部のプレー防
止するようにし九ものである。i9, numerals 17.17... are reinforcing materials, and the flanges 18... and 19... are welded to the outer wall of the downcomer 6.6 and the outer wall of the vent header 5, respectively, to form the downcomer 6.6. It is large enough to reinforce the connection between the vent header 5 and the vent header 5. Further, reference numeral 20 indicates a spacer fixed to the lower end of the downcomer 6.6, and this spacer prevents the lower end of the downcomer 6.6 from playing out.
次にこの発明の作用について説明する。Next, the operation of this invention will be explained.
ドライウェル３内の配管破断に起因してドライウェル３
内に蒸気が放出されることによるドライウェル３内の圧
力上昇にともなって、べ／ト管４、ベントへラダ５を介
してダウンカマ６．６の下端からサブレッジ璽ンチェン
パ２内に貯えられ大水Ｗ中に高圧の蒸気が放出されると
、この蒸気はサブレッジ目ンチェンパ２内の底部へ向か
って噴出するとともに水面を変動させてその一部を噴き
上げる。このように噴き上げられた水Ｗは、ベントへラ
ダ５の下部に衝突しようとするが、まずベントヘッダ５
の下方に配置されている保護装置７に第Ｊ図矢印印のよ
うに衝突することになる。そしてこの保護装置７Ｋｌｉ
突した水Ｗの大部分が傾斜され九プレー）１０．１０に
よって第３図矢印−）（ハ）に示すように保−装置７の
両側へ分けられる。Drywell 3 due to a pipe break in Drywell 3.
As the pressure in the dry well 3 increases due to the release of steam, a large amount of water is stored in the subledge chamber 2 from the lower end of the downcomer 6.6 through the bottom pipe 4 and the vent ladder 5. When high-pressure steam is released into the W, this steam is ejected toward the bottom of the subledge chamber 2 and fluctuates the water surface, causing some of it to blow up. The water W spouted up in this way tries to collide with the lower part of the rudder 5 toward the vent, but first the vent header 5
The object will collide with the protection device 7 located below as shown by the arrow in Figure J. And this protection device 7Kli
Most of the water W that has hit is tilted and divided into both sides of the retaining device 7 by play 9)10.10 as shown by arrows -)(c) in Figure 3.
従って蒸気の噴出によって噴き上けられる水Ｗがベント
ヘッダ５に直接衝突することはない。％験装置１によっ
て両側に分けられた水Ｗは、ダウンカマ６．６に衝突す
るが、ダウン力！６．６は補強材８と補強材１７によっ
てベントヘッダ５と全体として剛性を持つ構造となって
いるため、ベントヘッダ５とダウンカマ６．６の取付部
などに損傷を受けるおそれはない。なお、保護装置７の
接続部においてプレー）１Ｇが省略されているが。Therefore, the water W jetted up by the jet of steam does not directly collide with the vent header 5. The water W divided into both sides by the test device 1 collides with the downcomer 6.6, but the down force! 6.6 has a rigid structure with the vent header 5 as a whole due to the reinforcing material 8 and the reinforcing material 17, so there is no risk of damage to the attachment parts of the vent header 5 and the downcomer 6.6. In addition, in the connection part of the protection device 7, 1G is omitted.
ダウンカマ６．６の付近以外では、噴き上けられる水Ｗ
の影響力が少なくなるためである。Water is sprayed up in areas other than the vicinity of downcomer 6.6.
This is because the influence of
以上説明したように、この発明によればドライウェル内
の配管破断に起因する蒸気圧の上昇が急激に変化して、
蒸気が急激にサブレッジ目ンチェンパ内に放出され、ダ
ウンカマの下端付近の水が噴き上げられても、仁の噴き
上げられる水をベントヘッダの下方のディフレクタによ
ってさえぎるとともに、水を保護装置によって分散させ
、水が直接ベントヘッダおよびベント管に衝突すゐ現象
を防止し、ベントヘッダおよびベント管の安全性をさら
に高めることができる。As explained above, according to the present invention, the rise in vapor pressure caused by pipe rupture in the dry well changes rapidly,
Even if steam is suddenly released into the subledge and water near the bottom end of the downcomer is blown up, the water blown up by the jet is blocked by the deflector below the vent header, and the water is dispersed by the protection device, so that the water is Direct collision with the vent header and vent pipe can be prevented, and the safety of the vent header and vent pipe can be further improved.
第１図は従来の沸騰水型原子炉の安全設備の一例を示す
縦断面図、第コ図〜第！図はこの発明の一実施例を示す
もので、第２図は保護装置の配置を示す平面図、第３図
は保護装置の摩り付は状態を示す拡大縦断面図、第参図
はダウンカマの取）付は状態を示す拡大側面図、第５図
は保護装置の連結状態を示す拡大側面図である。
１・・・・・・沸騰水ｍ原子炉、２・・曲すブレッジ醇
ンチェンバ、３・・曲ドライウェル、４・・曲ペント管
、５・曲・ベントヘッダ、６・・・・・・ダウンカマ、
７・・曲保護装置、８・・曲補強材、９・曲・支持部材
、１゜・・・・・・プレート、１６・・曲支持孔、１７
・・・・・・補強材、Ｗ・・・・・・水。
第１図
第２図
第３図Figure 1 is a vertical cross-sectional view showing an example of the safety equipment of a conventional boiling water reactor. The drawings show one embodiment of the present invention. Fig. 2 is a plan view showing the arrangement of the protective device, Fig. 3 is an enlarged longitudinal sectional view showing the state of wear of the protection device, and Fig. 3 is a view of the downcomer. Figure 5 is an enlarged side view showing the state in which the protective device is connected. 1... Boiling water reactor, 2... Curved bridge immersion chamber, 3... Curved dry well, 4... Curved pent pipe, 5... Curved vent header, 6... Downcomer,
7. Curved protection device, 8. Curved reinforcement material, 9. Curved support member, 1°... Plate, 16. Curved support hole, 17
...Reinforcement material, W...Water. Figure 1 Figure 2 Figure 3
Claims (1)
に設ケられ九ベントヘッダに、ドライウェル内の配管破
断岬に起因する蒸気をサブレッジ冒ンチェンパに貯えら
れ良木に放出させる一対のダウンカマを値数対連結し、
これら一対のダウンカマの間にベントヘッダの長さ方向
に沿って下方に湾−した外面か形成されたディフレクタ
を固定したことを％黴とする原子炉格納容器用ベントヘ
ッダの保護装置。A pair of vent headers installed in the boiling water reactor's subledge vent header are installed in the KII shape in the ledge vent header, and a pair of vent headers are installed to store the steam caused by the piping breakage in the dry well in the subledge vent header and release it to the wood. Concatenate the downcomer with the value number,
A protective device for a vent header for a nuclear reactor containment vessel, in which a deflector having a downwardly curved outer surface is fixed between the pair of downcomers along the length direction of the vent header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56174005A JPS5875093A (en) | 1981-10-30 | 1981-10-30 | Vent header protecting device for reactor container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56174005A JPS5875093A (en) | 1981-10-30 | 1981-10-30 | Vent header protecting device for reactor container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5875093A true JPS5875093A (en) | 1983-05-06 |
Family
ID=15970976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56174005A Pending JPS5875093A (en) | 1981-10-30 | 1981-10-30 | Vent header protecting device for reactor container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5875093A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05239961A (en) * | 1991-08-09 | 1993-09-17 | Fujitsu Ten Ltd | Electronic lock device for car door |
-
1981
- 1981-10-30 JP JP56174005A patent/JPS5875093A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05239961A (en) * | 1991-08-09 | 1993-09-17 | Fujitsu Ten Ltd | Electronic lock device for car door |
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