JPS6234317Y2 - - Google Patents
Info
- Publication number
- JPS6234317Y2 JPS6234317Y2 JP1980044241U JP4424180U JPS6234317Y2 JP S6234317 Y2 JPS6234317 Y2 JP S6234317Y2 JP 1980044241 U JP1980044241 U JP 1980044241U JP 4424180 U JP4424180 U JP 4424180U JP S6234317 Y2 JPS6234317 Y2 JP S6234317Y2
- Authority
- JP
- Japan
- Prior art keywords
- pool water
- suppression chamber
- pressure suppression
- water
- pressure
- 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
Links
- 230000001629 suppression Effects 0.000 claims description 22
- 239000002826 coolant Substances 0.000 claims 3
- 239000012530 fluid Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 32
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002787 reinforcement Effects 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
- Y02E30/30—Nuclear fission reactors
Landscapes
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Description
【考案の詳細な説明】
本考案は、圧力抑制室に係り、特に逃し安全弁
作動時に冷却水を積極的に撹拌する事により、冷
却水中に加わる蒸気凝縮荷重を低減するに好適な
圧力抑制室に関するものである。[Detailed description of the invention] The present invention relates to a pressure suppression chamber, and in particular to a pressure suppression chamber suitable for reducing the steam condensation load applied to cooling water by actively stirring the cooling water when the relief safety valve is activated. It is something.
原子炉格納容器は、第１図に示すように、ドラ
イウエル２と圧力抑制室４とからなつている。原
子炉圧力容器１が、ドライウエル２内に格納され
ている。ドライウエル２からは、ベント管３が圧
力抑制室４内のプール水５中に伸びている。 As shown in FIG. 1, the reactor containment vessel consists of a dry well 2 and a pressure suppression chamber 4. A nuclear reactor pressure vessel 1 is housed within a dry well 2. From the dry well 2, a vent pipe 3 extends into the pool water 5 within the pressure suppression chamber 4.
一方、原子炉圧力容器１からは、主蒸気管６が
伸びており、この主蒸気管６からは主蒸気隔離弁
７の手前で逃し弁８を介して排気管９が設置され
ている。 On the other hand, a main steam pipe 6 extends from the reactor pressure vessel 1, and an exhaust pipe 9 is installed from the main steam pipe 6 via a relief valve 8 before a main steam isolation valve 7.
何らかの原因で主蒸気隔離弁７が閉まり、原子
炉が停止されると、原子炉圧力容器１は完全に隔
離状態となる。このような事態になると、原子炉
圧力容器１内は原子炉の崩壊熱のために圧力が急
上昇するので、逃し弁８が作動して、原子炉圧力
容器１内の蒸気を排気管９を通して圧力抑制室４
内のプール水５中に放出する。 When the main steam isolation valve 7 closes for some reason and the reactor is shut down, the reactor pressure vessel 1 becomes completely isolated. In such a situation, the pressure inside the reactor pressure vessel 1 rises rapidly due to the decay heat of the reactor, so the relief valve 8 is activated and the steam inside the reactor pressure vessel 1 is pumped through the exhaust pipe 9 to reduce the pressure. Suppression room 4
It is released into the pool water 5 inside.
逃し弁８が作動するような事象はいろいろあ
り、各々の事象によつて作動期間も異なるが、事
象によつては断続的に６時間程度にも及ぶ事も考
えられる。 There are various events that cause the relief valve 8 to operate, and the period of operation varies depending on each event, but depending on the event, it is conceivable that the period of operation may extend to about 6 hours intermittently.
以上のような事象に対し、排気管９から放出さ
れる蒸気がプール水５中で凝縮するときに凝縮振
動が発生し、排気管９及びプール水５中の圧力抑
制室４の壁に荷重が作用する。この時、排気管９
の蒸気放出口附近のプール水５の温度が160゜Ｆ
（71℃）を越えると、この蒸気凝縮振動は急激に
増加する。 In response to the above phenomenon, condensation vibration occurs when the steam released from the exhaust pipe 9 condenses in the pool water 5, and a load is applied to the exhaust pipe 9 and the wall of the pressure suppression chamber 4 in the pool water 5. act. At this time, exhaust pipe 9
The temperature of the pool water 5 near the steam outlet is 160°F.
(71℃), this vapor condensation oscillation increases rapidly.
一般に、逃し弁８作動時の排気管９放出口附近
は局部的にプール水温が高くなり、対流・拡散に
よつて時間と共に徐々に広がつてゆくが、水深に
よる温度差はなかなか解消されない。 Generally, when the relief valve 8 is activated, the pool water temperature becomes locally high near the outlet of the exhaust pipe 9, and gradually spreads over time due to convection and diffusion, but the temperature difference depending on the water depth is difficult to eliminate.
本考案は、逃し弁作動時のプール水を圧力抑制
室全域にわたつて積極的に撹拌する事により放出
口附近の局部的なプール水温度上昇を回避し、蒸
気凝縮時の振動を低減することを目的とする。 This invention avoids a local pool water temperature rise near the outlet by actively stirring the pool water throughout the pressure suppression chamber when the relief valve is activated, and reduces vibrations during steam condensation. With the goal.
第２図は、本考案の一実施例を示す。本考案
は、プール水５中からプール水５を吸込み、ポン
プ１０を介して再びプール水５中に戻す管路１１
を有し、特に、放出口１２の向きが環状の圧力抑
制室４の円周方向あるいはそれに近い向きとなつ
ており、図中矢印１３のようにプール水５全体を
圧力抑制室４の円周方向に回転させる事を特徴と
する。 FIG. 2 shows an embodiment of the present invention. The present invention has a conduit 11 that sucks the pool water 5 from inside the pool water 5 and returns it to the pool water 5 via the pump 10.
In particular, the discharge port 12 is oriented in the circumferential direction of the annular pressure suppression chamber 4 or in a direction close to the circumferential direction, and the entire pool water 5 is directed to the circumference of the pressure suppression chamber 4 as indicated by the arrow 13 in the figure. It is characterized by rotating in the direction.
なお、このとき吸込み口１４は放出口１３の向
いている方向にあり、その吸込み口１４の向きも
放出口１２の方向を向いている事が望ましい。 At this time, it is desirable that the suction port 14 is in the direction in which the discharge port 13 faces, and that the suction port 14 is also directed in the direction of the discharge port 12.
逃し弁８が作動し排気管９から蒸気がプール水
５中に放出されると、放出口１２附近のプール水
５の温度が局部的に高くなつてゆく。このときポ
ンプ１０を作動させるとプール水５は矢印１３の
方向圧力抑制室４の円周方向に循環し、放出口１
２周辺のプール水５の温度は局部的に高くなる事
はない。 When the relief valve 8 operates and steam is released into the pool water 5 from the exhaust pipe 9, the temperature of the pool water 5 near the discharge port 12 locally increases. At this time, when the pump 10 is operated, the pool water 5 is circulated in the direction of the arrow 13 in the circumferential direction of the pressure suppression chamber 4, and the discharge port 1
The temperature of the pool water 5 around 2 does not become locally high.
プール水量は逃し弁９が長時間作動しても、全
体の温度が160゜Ｆを越えないだけ確保されてい
るので、上記のような局部的な温度上昇を回壁す
れば、蒸気凝縮時の振重荷重は大きく低減でき
る。 Even if the relief valve 9 is operated for a long time, the pool water volume is maintained so that the overall temperature does not exceed 160 degrees Fahrenheit. The shaking load can be greatly reduced.
さらに、本系統は、既設の残留熱除去系統等の
ループを利用し、その放出口及び吸込み口の方
向・位置を上記のように設定することによつても
同様の効果が期待できる。 Furthermore, similar effects can be expected in this system by using a loop of an existing residual heat removal system, etc., and setting the direction and position of the discharge port and suction port as described above.
第３図は本考案の他の実施例を示すもので、第
２図の放出口１２の部分に相当するところのみを
示した。 FIG. 3 shows another embodiment of the present invention, and only the part corresponding to the outlet 12 in FIG. 2 is shown.
図中には２つのタイプの放出口が示されてい
る。一つは圧力抑制室４の円周方向に直角となる
ようなヘツダ１５を設置したもので、このヘツダ
１５には穴１６が片側にのみあいている。この穴
１６から図のように水が吐出されるので、圧力抑
制室４内のプール水５は圧力抑制室４の円周方向
の一方に循環し、温度の拡散が効率的にできる。 Two types of outlets are shown in the figure. One type has a header 15 installed perpendicular to the circumferential direction of the pressure suppression chamber 4, and this header 15 has a hole 16 only on one side. Since water is discharged from this hole 16 as shown in the figure, the pool water 5 in the pressure suppression chamber 4 circulates in one circumferential direction of the pressure suppression chamber 4, and the temperature can be efficiently diffused.
もう一つは、放出口に圧力抑制室４の円周方向
に伸びたヘツダ１７を設置し、さらにノズル１８
を図のように斜め方向に設置したものである。 The other is to install a header 17 extending in the circumferential direction of the pressure suppression chamber 4 at the discharge port, and further install a nozzle 18.
is installed diagonally as shown in the figure.
これらの他の実施例でも前述の実施例と同様に
大きな効果が期待できる。 These other embodiments can also be expected to have great effects similar to the above-mentioned embodiments.
第４図は、本考案の他の実施例を示すものであ
る。 FIG. 4 shows another embodiment of the present invention.
本実施例では、放出口をノズル１９タイプにし
て、さらに大流量のプール水５を駆動できるよう
にジエツトポンプタイプのダクト２０を設置した
ものである。 In this embodiment, the discharge port is a nozzle 19 type, and a jet pump type duct 20 is installed so that a large flow of pool water 5 can be driven.
本実施例によつてもプール水５に大きな駆動力
を与える事ができ、前述の実施例と同様に十分な
効果が期待できる。 Also in this embodiment, a large driving force can be applied to the pool water 5, and a sufficient effect can be expected as in the above-mentioned embodiment.
第５図および第６図は、本考案の他の実施例を
示したものである。 FIGS. 5 and 6 show other embodiments of the present invention.
第２図の実施例と異なるのは、圧力抑制室４の
プール水５中に整流板２１が同一方向に螺旋状に
設置されている事である。 The difference from the embodiment shown in FIG. 2 is that the current plate 21 is spirally installed in the pool water 5 in the pressure suppression chamber 4 in the same direction.
本実施例によれば、プール水を前記実施例のよ
うに循環させることによつて第６図の矢印２２の
ようにプール水５はかき廻わされ、プール水５の
撹拌はより完全に行なわれる。これにより前述の
実施例よりもさらに効率よい効果が期待できる。 According to this embodiment, by circulating the pool water as in the previous embodiment, the pool water 5 is stirred as indicated by the arrow 22 in FIG. 6, and the pool water 5 is more thoroughly stirred. It will be done. As a result, even more efficient effects can be expected than in the above-mentioned embodiments.
第７図も本考案の他の実施例の一つを示したも
のであるが、第５図と違うところは整流板２１の
向きが一つおきにたがい違いになつている事であ
る。 FIG. 7 also shows another embodiment of the present invention, but the difference from FIG. 5 is that the direction of every other current plate 21 is different.
本実施例によつても前記の実施例と同様な効果
が期待できる。以上の各実施例によれば、圧力抑
制室４の全域にわたつて、プール水５を循環して
流しつづけ、その流れにより局部昇温プール水を
移動させることで広域にわたつて分散し、プール
水５の昇温防止と温度均一化を圧力抑制室４の全
域にわたつてすみやかに達成する。このことによ
り蒸気凝縮振動の増加を抑制できる。 The same effects as those of the above-mentioned embodiments can be expected from this embodiment as well. According to each of the above embodiments, the pool water 5 is circulated and continues to flow over the entire area of the pressure suppression chamber 4, and by moving the locally heated pool water by the flow, it is dispersed over a wide area and the pool water is To quickly prevent the temperature of water 5 from rising and to equalize the temperature throughout the pressure suppression chamber 4. This makes it possible to suppress an increase in steam condensation vibration.
本考案によれば、逃し弁作動時の排気管及びプ
ール水中壁に加わる蒸気凝縮振動荷重を低減でき
るので、荷重対策としての補強等を特に必要とせ
ず、さらに既設の残留熱除去系統などを駆動力と
して使用すれば、経済的で、安全性の高い原子炉
格納容器を供することができる。 According to the present invention, it is possible to reduce the steam condensation vibration load applied to the exhaust pipe and the underwater pool wall when the relief valve is activated, so there is no need for reinforcement as a countermeasure against the load, and it also drives the existing residual heat removal system. If used as a power source, it is possible to provide an economical and highly safe reactor containment vessel.
第１図は沸騰水型原子炉の原子炉格納容器の外
観図、第２図は本考案の好適な一実施例である圧
力抑制室の平面図、第３図、第４図、第５図およ
び第７図は本考案の他の実施例である圧力抑制室
の平面図、第６図は第５図の−断面図であ
る。
１……原子炉圧力容器、２……ドライウエル、
４……圧力抑制室、５……プール水、１０……ポ
ンプ、１１……管路、１２……放出口、１４……
吸込み口、２１……整流板。
Figure 1 is an external view of the reactor containment vessel of a boiling water reactor, Figure 2 is a plan view of a pressure suppression chamber that is a preferred embodiment of the present invention, Figures 3, 4, and 5. FIG. 7 is a plan view of a pressure suppression chamber according to another embodiment of the present invention, and FIG. 6 is a cross-sectional view taken from FIG. 5. 1...Reactor pressure vessel, 2...Dry well,
4... Pressure suppression chamber, 5... Pool water, 10... Pump, 11... Piping, 12... Outlet, 14...
Suction port, 21... rectifier plate.
Claims (1)
る排気管を備えた構成において、前記圧力抑制室
内の冷却材中に開口した入口と、前記環状の少な
くとも円周方向への前記冷却材の流れが生じる方
向に開口した前記冷却材中の出口と、前記入口と
前記出口とを連通する流路と、前記流路に備えた
流体駆動力付与手段とから成る圧力抑制室。 A pressure suppression chamber having an inlet opening into the coolant in the pressure suppression chamber, an outlet opening into the coolant in a direction in which the coolant flows in at least the circumferential direction of the annulus, a flow passage connecting the inlet and the outlet, and a fluid driving force imparting means provided in the flow passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980044241U JPS6234317Y2 (en) | 1980-03-31 | 1980-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980044241U JPS6234317Y2 (en) | 1980-03-31 | 1980-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56144394U JPS56144394U (en) | 1981-10-30 |
| JPS6234317Y2 true JPS6234317Y2 (en) | 1987-09-01 |
Family
ID=29639509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980044241U Expired JPS6234317Y2 (en) | 1980-03-31 | 1980-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6234317Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52100078A (en) * | 1976-02-18 | 1977-08-22 | Toshiba Corp | Pressure suppression device |
-
1980
- 1980-03-31 JP JP1980044241U patent/JPS6234317Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52100078A (en) * | 1976-02-18 | 1977-08-22 | Toshiba Corp | Pressure suppression device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56144394U (en) | 1981-10-30 |
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