JPH11142576A - Air-conditioner in reactor container - Google Patents
Air-conditioner in reactor containerInfo
- Publication number
- JPH11142576A JPH11142576A JP9302972A JP30297297A JPH11142576A JP H11142576 A JPH11142576 A JP H11142576A JP 9302972 A JP9302972 A JP 9302972A JP 30297297 A JP30297297 A JP 30297297A JP H11142576 A JPH11142576 A JP H11142576A
- Authority
- JP
- Japan
- Prior art keywords
- air
- heat exchanger
- reactor
- containment vessel
- cooling water
- 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.)
- Withdrawn
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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、原子炉格納容器内
の空調装置に関し、特に原子炉格納容器の内面に生ずる
結露を減少するように改善された空調装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner in a containment vessel, and more particularly to an air conditioner improved so as to reduce dew condensation on the inner surface of the containment vessel.
【０００２】[0002]
【従来の技術】加圧水型原子炉プラントにおいて、原子
炉容器は鋼製などの格納容器内に設置され、格納容器内
の空気は循環されて所定の温度に調整されている。この
空調装置の概念系統図を図３に示す。図を参照するに、
原子炉格納容器１の内部に原子炉容器３が設置され、こ
れに原子炉冷却材循環系構成機器が連絡されている。更
に、格納容器１内の底部には、結露・雑排水溜５が形成
されている。そして、前述の原子炉容器３などは、その
運転に際し高温となり、格納容器内の空気を加熱する。
このため、格納容器１内の空気を循環する循環ブロア７
には熱交換器９が付設され、循環する空気流１１から熱
を吸収する。熱交換器９に連絡した冷却水循環配管１３
は循環ポンプ１５を備え、空冷冷却塔１７に連絡してい
る。従って、熱交換器９で循環冷却水が吸収した熱は、
空冷冷却塔１７内で大気に放出される。2. Description of the Related Art In a pressurized water reactor plant, a reactor vessel is installed in a containment vessel made of steel or the like, and air in the containment vessel is circulated and adjusted to a predetermined temperature. FIG. 3 shows a conceptual system diagram of this air conditioner. Referring to the figure,
A reactor vessel 3 is installed inside the reactor containment vessel 1, and a component of a reactor coolant circulation system is connected to the reactor vessel 3. Further, a dew condensation / miscellaneous drainage reservoir 5 is formed at the bottom of the storage container 1. Then, the above-mentioned reactor vessel 3 and the like become hot during the operation thereof and heat the air in the containment vessel.
Therefore, the circulation blower 7 that circulates the air in the storage container 1
Is provided with a heat exchanger 9 for absorbing heat from the circulating airflow 11. Cooling water circulation pipe 13 connected to heat exchanger 9
Is provided with a circulation pump 15 and communicates with an air-cooling cooling tower 17. Therefore, the heat absorbed by the circulating cooling water in the heat exchanger 9 is
It is released to the atmosphere in the air-cooled cooling tower 17.
【０００３】[0003]
【発明が解決しようとする課題】而して、格納容器１
は、外部遮蔽筒などによって囲まれているが、内部空気
の温度及び湿度並びに格納容器１の鋼板温度との関連に
より内面に結露が生ずる。このような結露は、格納容器
１の外鋼板や関連する部材、装置の腐食の原因となる。
従って、結露の低減が望まれていて、その対策のため現
象を解析検討した。その結果を図４に示す。実線は炉壁
ドレーン、破線は結露・雑排水溜５からの蒸発量、１点
鎖線は熱交換器９のドレーンを示す。図４は又、格納容
器１の内面の結露は、大気温度が上昇し、それに伴って
格納容器１の内部温度が上昇する７月頃から格納容器１
の内部湿度が上昇し、その外鋼板の内面温度が露点以上
になって生じていることを示す。又、７月頃には、空冷
冷却塔１７の温度も上昇し、循環ブロア用熱交換器９の
温度が高く、循環空気流１１からの取る水分量が減少し
て無くなることも示されている。従って、本発明は、例
えば７月以降の条件の悪い時期においても格納容器の内
面に結露が生じない原子炉格納容器内の空調装置を提供
することを課題とする。SUMMARY OF THE INVENTION
Is surrounded by an outer shielding tube or the like, but dew condensation occurs on the inner surface due to the relationship between the temperature and humidity of the internal air and the temperature of the steel plate of the storage container 1. Such dew condensation causes corrosion of the outer steel plate of the containment vessel 1, related members, and devices.
Therefore, reduction of dew condensation is desired, and phenomena were analyzed and analyzed for countermeasures. FIG. 4 shows the results. The solid line indicates the furnace wall drain, the broken line indicates the amount of evaporation from the dew / drainage reservoir 5, and the dashed line indicates the drain of the heat exchanger 9. FIG. 4 also shows that dew condensation on the inner surface of the containment vessel 1 starts from around July, when the atmospheric temperature rises and the internal temperature of the containment vessel 1 rises accordingly.
This indicates that the internal humidity of the outer steel plate has increased and the inner surface temperature of the outer steel plate has exceeded the dew point. It is also shown that around July, the temperature of the air-cooling cooling tower 17 also rises, the temperature of the heat exchanger 9 for circulating blower is high, and the amount of water taken from the circulating air flow 11 decreases and disappears. Accordingly, an object of the present invention is to provide an air conditioner in a reactor containment vessel in which dew condensation does not occur on the inner surface of the containment vessel even in bad conditions after July, for example.
【０００４】[0004]
【課題を解決するための手段】如上の課題を解決するた
め、本発明によれば、原子炉格納容器内の空調装置は、
原子炉格納容器内に設置された循環ブロア用熱交換器、
この熱交換器に連絡し前記原子炉格納容器内外に延びた
冷却水循環配管及び同冷却水循環配管に連絡した冷却器
を有し、更にその冷却水循環配管に付設された別置冷却
器を有することを特徴としている。According to the present invention, there is provided an air conditioner in a containment vessel,
A heat exchanger for a circulation blower installed in the containment vessel,
A cooling water circulation pipe connected to the heat exchanger and extending into and out of the reactor containment vessel; and a cooler connected to the cooling water circulation pipe, and further comprising a separate cooler attached to the cooling water circulation pipe. Features.
【０００５】[0005]
【発明の実施の形態】以下添付の図面を参照して本発明
の実施形態を説明する。尚、前述の従来の装置に関する
図面を含め全図に亘り、同一部分には同一の符号を付し
ている。先ず図１を参照するに、原子炉格納容器１の内
部に原子炉容器３が設置され、これに図示しない原子炉
冷却材循環系構成機器が連絡されている。更に、格納容
器１内の底部には、結露・雑排水溜５が形成されてい
る。格納容器１内の空気を循環する循環ブロア７には熱
交換器９が付設され、循環する空気流１１から熱を吸収
する。熱交換器９に連絡した冷却水循環配管２１は，戻
り冷却水ライン２３に循環ポンプ１５を備え、空冷冷却
塔１７に連絡している。そして更に、戻り冷却水ライン
２３には、別の冷却器２５が設けられ、これは冷媒配管
を通じて冷却機２７に連絡している。Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that the same portions are denoted by the same reference numerals throughout the drawings including the drawings related to the above-described conventional apparatus. First, referring to FIG. 1, a reactor vessel 3 is installed inside a reactor containment vessel 1, and a component of a reactor coolant circulation system (not shown) is connected to the reactor vessel 3. Further, a dew condensation / miscellaneous drainage reservoir 5 is formed at the bottom of the storage container 1. A heat exchanger 9 is attached to the circulation blower 7 that circulates air in the storage container 1 and absorbs heat from the circulating air flow 11. The cooling water circulation pipe 21 connected to the heat exchanger 9 is provided with a circulation pump 15 in a return cooling water line 23 and is connected to the air cooling cooling tower 17. Further, another cooler 25 is provided in the return cooling water line 23 and communicates with a cooler 27 through a refrigerant pipe.
【０００６】以上のような構成の空気調和装置は次のよ
うに作動する。原子炉容器３を含む原子炉冷却材循環系
は、原子炉の運転に際し高温となり、格納容器１の内部
空気に熱を放出する。循環ブロア７は、格納容器内部の
空気を駆動して空気流１１を発生させる。空冷冷却塔１
７で冷却された冷却水は、循環ポンプ１５により熱交換
器９に送られるが、その際冷却器２５により更に冷却さ
れ、空冷温度より低い温度で熱交換器９に入り、その中
を貫流しつつ空気流１１から熱を奪う。そして、昇温し
た冷却水は、循環配管２１を流れて空冷冷却塔１７に至
り、ここで大気により冷却される。冷却器２５により戻
り冷却水の温度を空冷温度より５℃下げたときの格納容
器１の内部の水分の挙動を図２に示す。図において、実
線は炉壁ドレーン、破線は結露・雑排水溜５からの蒸発
量、１点鎖線は熱交換器９のドレーンを示す。図２は、
従来の装置に関する図４に対応するものであるが、熱交
換器９のドレーンが増えている。これは、熱交換器９の
表面の結露が集められたものであって、その分だけ格納
容器１の内部空気からの水分除去量が増大している。即
ち湿分が減少し、結露が防止される。[0006] The air conditioner having the above configuration operates as follows. The reactor coolant circulation system including the reactor vessel 3 becomes high in temperature during the operation of the reactor, and releases heat to the air inside the containment vessel 1. The circulation blower 7 drives the air inside the storage container to generate an air flow 11. Air-cooled cooling tower 1
The cooling water cooled in 7 is sent to the heat exchanger 9 by the circulation pump 15, where it is further cooled by the cooler 25, enters the heat exchanger 9 at a temperature lower than the air cooling temperature, and flows therethrough. While taking heat from the airflow 11. Then, the heated cooling water flows through the circulation pipe 21 to reach the air-cooled cooling tower 17, where it is cooled by the atmosphere. FIG. 2 shows the behavior of the moisture inside the storage container 1 when the temperature of the return cooling water is lowered by 5 ° C. from the air cooling temperature by the cooler 25. In the figure, the solid line indicates the furnace wall drain, the broken line indicates the amount of evaporation from the dew / drainage drain 5, and the dashed line indicates the drain of the heat exchanger 9. FIG.
This corresponds to FIG. 4 relating to the conventional apparatus, but the drain of the heat exchanger 9 is increased. This is a collection of dew condensation on the surface of the heat exchanger 9, and the amount of water removed from the air inside the storage container 1 is increased by that much. That is, moisture is reduced, and dew condensation is prevented.
【０００７】[0007]
【発明の効果】前述したように、本発明によれば、格納
容器の内部空気を冷却する熱交換器への供給冷却水を別
置きの冷却器により更に冷却するので、熱交換器におけ
る水分除去量が増大して内部湿度が減り、格納容器の内
面結露を低減することができる。As described above, according to the present invention, the cooling water supplied to the heat exchanger for cooling the air inside the storage container is further cooled by a separate cooler, so that the water removal in the heat exchanger is achieved. As the amount increases, the internal humidity decreases, and the inner surface of the containment can be reduced.
【図１】本発明の実施形態を示す系統図である。FIG. 1 is a system diagram showing an embodiment of the present invention.
【図２】前記実施形態の作用を説明するグラフである。FIG. 2 is a graph illustrating the operation of the embodiment.
【図３】従来の装置の系統図である。FIG. 3 is a system diagram of a conventional device.
【図４】従来装置の作用を説明するグラフである。FIG. 4 is a graph illustrating the operation of a conventional device.
１ 格納容器 ３ 原子炉容器 ７ 循環ブロア １１ 空気流 １７ 空冷冷却塔 ２１ 循環配管 ２３ 戻り冷却水ライン ２５ 冷却器 ２７ 冷却機 REFERENCE SIGNS LIST 1 containment vessel 3 reactor vessel 7 circulation blower 11 air flow 17 air cooling cooling tower 21 circulation pipe 23 return cooling water line 25 cooler 27 cooler
Claims (1)
ア用熱交換器、同熱交換器に連絡し前記原子炉格納容器
内外に延びた冷却水循環配管及び同冷却水循環配管に連
絡した冷却器を有し、更に前記冷却水循環配管に付設さ
れた別置冷却器を有してなることを特徴とする原子炉格
納容器内の空調装置。1. A heat exchanger for a circulation blower installed in a reactor containment vessel, a cooling water circulation pipe connected to the heat exchanger and extending inside and outside the reactor containment vessel, and a cooler connected to the cooling water circulation pipe. And an air conditioner in the containment vessel, further comprising a separate cooler attached to the cooling water circulation pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9302972A JPH11142576A (en) | 1997-11-05 | 1997-11-05 | Air-conditioner in reactor container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9302972A JPH11142576A (en) | 1997-11-05 | 1997-11-05 | Air-conditioner in reactor container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11142576A true JPH11142576A (en) | 1999-05-28 |
Family
ID=17915388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9302972A Withdrawn JPH11142576A (en) | 1997-11-05 | 1997-11-05 | Air-conditioner in reactor container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11142576A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017500580A (en) * | 2013-12-26 | 2017-01-05 | ニュースケール パワー エルエルシー | Improvement of neutron path |
-
1997
- 1997-11-05 JP JP9302972A patent/JPH11142576A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017500580A (en) * | 2013-12-26 | 2017-01-05 | ニュースケール パワー エルエルシー | Improvement of neutron path |
| US10466367B1 (en) | 2013-12-26 | 2019-11-05 | Nuscale Power, Llc | Neutron path enhancement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20050201 |