JPH083547B2 - Air conditioner for PCV - Google Patents
Air conditioner for PCVInfo
- Publication number
- JPH083547B2 JPH083547B2 JP62070010A JP7001087A JPH083547B2 JP H083547 B2 JPH083547 B2 JP H083547B2 JP 62070010 A JP62070010 A JP 62070010A JP 7001087 A JP7001087 A JP 7001087A JP H083547 B2 JPH083547 B2 JP H083547B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- exhaust
- duct
- supply
- passage
- 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
-
- 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
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は原子力発電所の原子炉格納容器の空気調和装
置に係り、特に原子格納容器内の温度分布を均一化する
に好適な空気調和装置に関する。Description: TECHNICAL FIELD The present invention relates to an air conditioner for a reactor containment vessel of a nuclear power plant, and more particularly to an air conditioner suitable for uniforming the temperature distribution in the reactor containment vessel. Regarding
〔従来の技術〕 従来の沸騰水型原子力発電所の原子炉格納容器の空気
調和装置を第11図に示す。１は原子炉の格納容器、２は
原子炉を内蔵する圧力容器、３は圧力容器からの放射線
を遮蔽する生体遮蔽壁、８は送風機、９は冷却器で空気
調和装置の構成機器である。[Prior Art] Fig. 11 shows an air conditioner for a reactor containment vessel of a conventional boiling water nuclear power plant. Reference numeral 1 is a containment vessel of a nuclear reactor, 2 is a pressure vessel containing a nuclear reactor, 3 is a living body shielding wall that shields radiation from the pressure vessel, 8 is a blower, and 9 is a cooler, which is a component of an air conditioner.
圧力容器２には給水系，主蒸気系，再循環系等の配管
が接続され、これらの配管及び圧力容器２から放出され
る熱により、格納容器１内の雰囲気温度は上昇する。格
納容器１内の雰囲気温度を制御するために、給・排気用
ダクト5,冷却器９及び送風機８を設けている。第11図に
示す空調系統は２種類に分かれている。その一は原子炉
の格納容器１上部の空気（厳密には窒素であるが、以下
空気と略す）と排気口７より吸込み、原子炉の格納容器
１下部に設けた冷却器９で冷却後、原子炉の格納容器１
下部の給気口６より吹出す。この場合、給気口６は、生
体遮蔽壁３と圧力容器２間、ペデスタル部4,生体遮蔽壁
３と原子炉の格納容器１間にそれぞれ設けている。他の
一は、給気口6,排気口7,冷却器９及び送風機８を格納容
器１上部に設け、格納容器１上部の雰囲気の温度を制御
する。第11図の方式では、冷却器９と送風器８は、格納
容器１上部に各３台（内１台は予備）、格納容器１下部
に各３台（内１台は予備）設置しており、それに対応し
たダクトが配置されている。Pipes for a water supply system, a main steam system, a recirculation system, etc. are connected to the pressure vessel 2, and the heat released from these pipes and the pressure vessel 2 raises the ambient temperature in the containment vessel 1. A supply / exhaust duct 5, a cooler 9, and a blower 8 are provided to control the ambient temperature in the containment vessel 1. The air conditioning system shown in Fig. 11 is divided into two types. One of them is that the air above the containment vessel 1 of the reactor (strictly nitrogen, but abbreviated as air below) and the exhaust port 7 are sucked in, and after being cooled by a cooler 9 provided at the bottom of the containment vessel 1 of the reactor, Primary containment vessel 1
Blow out from the air supply port 6 at the bottom. In this case, the air supply port 6 is provided between the living body shielding wall 3 and the pressure vessel 2, and between the pedestal portion 4, the living body shielding wall 3 and the containment vessel 1 of the nuclear reactor. In the other, the air supply port 6, the exhaust port 7, the cooler 9 and the blower 8 are provided on the upper part of the storage container 1 to control the temperature of the atmosphere above the storage container 1. In the system shown in FIG. 11, three coolers 9 and eight blowers 8 are installed above the containment vessel 1 (one of which is a spare) and three below the containment vessel 1 (one of which is a spare). And the duct corresponding to it is arranged.
なお、この種の装置として関連するものに、例えば特
開昭57−14796号，特開昭54−71291号公報が挙げられ
る。Note that, as devices related to this type, there are, for example, JP-A-57-14796 and JP-A-54-71291.
上記従来技術では、格納容器内の発熱源が高さ方向の
中央部に集中し、このため格納容器下部には温度が低く
かつ雰囲気が停滞する領域が生じやすく、格納容器内の
雰囲気に温度差が発生する。In the above-mentioned conventional technique, the heat source in the storage container is concentrated in the central portion in the height direction, so that a region where the temperature is low and the atmosphere is stagnant is likely to occur in the lower part of the storage container, and the temperature difference in the atmosphere in the storage container Occurs.
格納容器内の雰囲気温度が下り過ぎると、配管表面に
結露を生じ、配管の大気腐食が発生する恐れがある。If the ambient temperature in the containment vessel falls too low, dew condensation may occur on the surface of the pipe, causing atmospheric corrosion of the pipe.
また、従来技術では、格納容器雰囲気全体の温度を制
御するため、冷却器9,送風機８の容量の大型化，ダクト
物量が多くならざるを得ず、合理化の観点についての配
慮がされておらず、コストの点で問題があつた。Further, in the prior art, since the temperature of the entire containment vessel atmosphere is controlled, the capacity of the cooler 9 and the blower 8 must be increased and the amount of duct material must be increased, and no consideration is given from the viewpoint of rationalization. , There was a problem in terms of cost.
本発明の目的は、格納容器内の雰囲気温度を均一化
し、かつ冷却器の容量の低減，ダクト物量の低減等空気
調和装置の合理化を達成することにある。An object of the present invention is to make the ambient temperature in the containment vessel uniform, and to achieve rationalization of the air conditioner by reducing the capacity of the cooler and the amount of duct material.
上記問題点は、上下方向に互いに間隔をあけて配置さ
れた風道であって、上部に配置された風道は下方に開い
た開口を有し、下部に配置された風道は上方に開いた開
口を有する風道と、該風道に接続し、一方の風道に給気
用気体を供給し、他方の風道から排気を吸引する流路と
前記一方の風道から排気を吸引し、前記他方の風道に給
気用気体を供給する流路とを有し、前記両流路を互いに
切換える給排気切換装置と、該給排気切換装置に接続
し、給気を供給し排気を吸引する給排気装置とを備え、
前記風道が圧力容器周囲の配管群部にらせん状に配置さ
れた風道であることを特徴とする原子炉格納容器の空気
調和装置によって解決される。The above-mentioned problem is that the air passages are vertically spaced apart from each other, and the air passages arranged in the upper portion have openings that open downward, and the air passages arranged in the lower portion open upward. An air passage having an open opening, a gas supply gas is supplied to one of the air passages connected to the air passage, and an exhaust air is sucked from the other air passage and the exhaust air is sucked from the one air passage. A supply / exhaust switching device that has a flow path for supplying the supply gas to the other air passage, and switches the both flow paths to each other; It is equipped with a suction and exhaust device that sucks
This is solved by an air conditioner for a reactor containment vessel, wherein the air passage is a spiral air passage arranged in a pipe group around the pressure vessel.
原子炉格納容器内の圧力容器周りの配管等の上下に配
置された風道間で、上部風道の下方に開いた開口から給
気を吐出し、下部風道の上方に開いた開口から排気を吸
入することにより、また給排気切換装置を切換えて下部
風道の上方に開いた開口より給気を吐出し、上部風道の
下方に開いた開口から排気を吸入することにより、また
上記の給排気切換を交互に行うことにより、上下に配置
された風道間の配管等からの熱は給気によつて冷却さ
れ、排気によつて除去されるので、この熱が周囲の雰囲
気に拡散する範囲が少なくなり、かつ気体が撹拌される
ので上下風道間の温度が均一化する。さらに、風道を圧
力容器周囲の配管群部にらせん状に配置したことによ
り、発熱源である配管を上下に挟むことが容易に、かつ
少ないダクト量で行える。これにより、ダクト物量を低
減することができる。Between the upper and lower wind ducts such as the piping around the pressure vessel in the reactor containment vessel, supply air is discharged from the opening that opens below the upper wind duct and exhausted from the opening that opens above the lower wind duct. By inhaling the air, and by switching the air supply / exhaust switching device to discharge the air supply through the opening that opens upward in the lower air passage, and inhale the exhaust air through the opening that opens downward in the upper air passage, By alternately switching between air supply and exhaust, the heat from the pipes between the upper and lower air passages is cooled by the air supply and removed by the exhaust, so this heat diffuses into the surrounding atmosphere. The temperature range between the upper and lower air passages becomes uniform because the range to be used is reduced and the gas is agitated. Further, by arranging the air ducts in a spiral shape in the pipe group portion around the pressure vessel, it is possible to easily sandwich the pipe, which is a heat source, in the vertical direction and with a small amount of ducts. As a result, the amount of duct material can be reduced.
以下、本発明の一実施例を第１図〜第10図を用いて説
明する。An embodiment of the present invention will be described below with reference to FIGS.
第１図において、10は給・排気兼用ダクト、11は給・
排気切換器を示す。本実施例では２系統の空気調和装置
で構成し、各系統にはそれぞれ冷却器9,送風機8,給・排
気切換器11及び給・排気兼用ダクト10を設けている。給
・排気兼用ダクト10は圧力容器２の外側にある生体遮蔽
壁３の周囲にらせん状に設置されている。In FIG. 1, 10 is a duct for both supply and exhaust, and 11 is a supply / exhaust duct.
An exhaust switch is shown. In the present embodiment, the air conditioner has two systems, and each system is provided with a cooler 9, a blower 8, a supply / exhaust changeover device 11 and a supply / exhaust duct 10. The air supply / exhaust duct 10 is spirally installed around the living body shielding wall 3 outside the pressure vessel 2.
給・排気兼用ダクト10からペデスタル部4,圧力容器２
と生体遮蔽壁３との間隙部、格納容器１最上部へそれぞ
れ分岐したダクトを設けている。Supply / exhaust duct 10 to pedestal 4, pressure vessel 2
Ducts are provided at the gap between the living body shielding wall 3 and the top of the storage container 1.
給・排気兼用ダクト10は二つの風道を有し、運転モー
ドに応じてこれらの風道が給気用，排気用にそれぞれ切
換わる。送風機８及び冷却器９と、これらの風道との切
換えは、給・排気切換器11により行う。The air supply / exhaust duct 10 has two air passages, and these air passages are switched between air supply and air exhaust depending on the operation mode. Switching between the blower 8 and the cooler 9 and these air passages is performed by a supply / exhaust switching device 11.
第２図は、第１図の部分拡大図である。給・排気兼用
ダクト10は、生体遮蔽壁３の周囲にらせん状配置となつ
ており、第２図で、上下となる給・排気兼用ダクト10を
拡大して示したものである。第２図において、下側に示
されている給・排気兼用ダクト10の右奥側と、上側に示
されている給・排気兼用ダクト10の左側手前の部分とは
生体遮蔽壁３を一周してつながつている。給・排気兼用
ダクト10は、第２図に示すように上部ダクト10uと下部
ダクト10lから成り、両者の中間に設けた仕切板12は断
熱材で構成している。上部ダクト10u及び下部ダクト10l
にはそれぞれ開口部を設けており、運転モードに応じて
風は各開口部で給排気する。運転モードを運転モードＩ
と運転モードIIの２種類とする。運転モードＩでは上部
ダクト10uを給気専用、下部ダクト10lを排気専用とす
る。運転モードIIでは逆に上部ダクト10uを排気専用、
下部ダクト10lを給専用する。運転モードＩでは第２図
の実線の矢印で示すように風は上部ダクト10uから格納
容器１上方に向つて吹出し、格納容器１内の風は下部ダ
クト10lに排気される。すなわち格納容器１下側の給・
排気兼用ダクト10の上部ダクト10uから吹出された風
は、格納容器１上側の給・排気兼用ダクト10の下部ダク
ト10lに排気される。運転モードIIでは、第２図の点線
で示すように、格納容器１上側の給・排気兼用ダクト10
下部ダクト10lから吹き出された風は、格納容器１下側
の給・排気兼用ダクト10の上部ダクト10uに排気され
る。FIG. 2 is a partially enlarged view of FIG. The air supply / exhaust duct 10 has a spiral arrangement around the living body shielding wall 3, and the upper and lower air supply / exhaust duct 10 is shown in an enlarged manner in FIG. In FIG. 2, the right rear side of the air supply / exhaust air duct 10 shown on the lower side and the portion on the left side of the air supply / exhaust air duct 10 shown on the upper side go around the biological shielding wall 3. It is connected. The air supply / exhaust duct 10 is composed of an upper duct 10u and a lower duct 10l as shown in FIG. 2, and a partition plate 12 provided between the upper duct 10u and the lower duct 10l is made of a heat insulating material. Upper duct 10u and lower duct 10l
Each has an opening, and air is supplied and exhausted through each opening according to the operation mode. Operation mode is operation mode I
And operation mode II. In operation mode I, the upper duct 10u is exclusively used for air supply and the lower duct 10l is exclusively used for exhaust. Conversely, in operation mode II, the upper duct 10u is exclusively used for exhausting,
The lower duct 10l is exclusively used for supply. In the operation mode I, the wind blows upward from the upper duct 10u toward the upper side of the storage container 1 as shown by the solid arrow in FIG. 2, and the wind inside the storage container 1 is exhausted to the lower duct 10l. That is, the supply below the storage container 1
The air blown from the upper duct 10u of the exhaust duct 10 is exhausted to the lower duct 10l of the supply / exhaust duct 10 on the upper side of the storage container 1. In the operation mode II, as shown by the dotted line in FIG.
The air blown out from the lower duct 10l is exhausted to the upper duct 10u of the supply / exhaust duct 10 below the containment vessel 1.
第３図及び第４図は、給・排気兼用ダクト10と配管13
発熱部との位置関係を示したものである。第３図は、給
・排気兼用ダクト10を配管13発熱部の比較的発熱密度の
高い位置、垂直直管部の上方に設けた場合を示す。配管
13は原子炉の圧力容器２と接続しており、高温水のため
配管表面は発熱する。配管13の上・下位置に配置した給
・排気ダクト10はらせん状に配置したダクトの一部の垂
直断面を示し、配管13上側の給・排気兼用ダクト10の上
部ダクト10uと、配管13下側の給・排気兼用ダクト10の
上部ダクト10uを連続した同一風道である。第３図で
は、（ａ）を運転モードＩとし、（ｂ）を運転モードII
とする。（ａ）の運転モードＩでは、配管13下側に設け
た給・排気兼用ダクト10の上部ダクト10uから冷風が給
気され、配管13表面からの熱を除去後、温風となり、配
管13上側に設けた給・排気兼用ダクト10の下部ダクト10
uに排気される。（ｂ）の運転モードIIでは、配管13上
側に設けた給・排気兼用ダクト10の下部ダクト10lから
冷却が給気される。この冷風は、運転モードＩではほぼ
定常状態となつた温度分布を乱す効果を有す。このため
配管13付近の高温空間領域が壊され、熱は流れに伴つて
四方に分散し、配管付近の温度分布は均一化される。四
方に分散した温風は、配管13下側に設けた給・排気兼用
ダクト10の上部ダクト10uに排気されるか、又は、浮力
の影響により格納容器１上側に上昇する。このように運
転モードI,IIを交互に繰返せば、配管13からの局所的な
発熱は近くに設けた給・排気兼用ダクト10に排出されや
すくなり、格納容器１内の雰囲気全体の温度上昇も減
り、局所的な高温領域の発生が少なくなる。3 and 4 show a duct 10 for both supply and exhaust and a pipe 13
It shows the positional relationship with the heat generating portion. FIG. 3 shows a case where the duct 10 for both supply and exhaust is provided at a position where the heat generation portion of the pipe 13 has a relatively high heat generation density, and above the vertical straight pipe portion. Plumbing
Reference numeral 13 is connected to the pressure vessel 2 of the nuclear reactor, and the surface of the pipe generates heat due to the high temperature water. The supply / exhaust ducts 10 arranged above and below the pipe 13 show a vertical cross-section of a part of the spirally arranged duct, and the upper duct 10u of the duct 10 for both supply / exhaust both above the pipe 13 and the bottom of the pipe 13 are shown. The upper duct 10u of the side air supply / exhaust duct 10 has the same air passage. In FIG. 3, (a) is the operation mode I and (b) is the operation mode II.
And In the operation mode I of (a), cold air is supplied from the upper duct 10u of the air supply / exhaust duct 10 provided on the lower side of the pipe 13 to remove the heat from the surface of the pipe 13 to become warm air, and the upper side of the pipe 13 Lower duct 10 of the air supply / exhaust duct 10 installed in the
exhausted to u. In the operation mode II of (b), the cooling air is supplied from the lower duct 10l of the air supply / exhaust duct 10 provided on the upper side of the pipe 13. The cold air has the effect of disturbing the temperature distribution that is in a substantially steady state in the operation mode I. Therefore, the high-temperature space region near the pipe 13 is destroyed, heat is dispersed in all directions along with the flow, and the temperature distribution near the pipe is made uniform. The warm air dispersed in all directions is exhausted to the upper duct 10u of the air supply / exhaust duct 10 provided on the lower side of the pipe 13 or rises to the upper side of the storage container 1 due to the influence of buoyancy. If the operation modes I and II are alternately repeated in this manner, the local heat generation from the pipe 13 is easily discharged to the air supply / exhaust duct 10 provided nearby, and the temperature of the entire atmosphere in the containment vessel 1 rises. And the occurrence of local high temperature regions is reduced.
第４図は、給・排気兼用ダクト10の配置が、第３図に
比べて生体遮蔽３から離れた場合の例を示す。給・排気
兼用ダクト10は、第３図に示す給・排気ダクト10を45度
傾け、断熱材の仕切板12を水平方向に設け、ダクトを上
部ダクト10uと下部ダクト10lに分けたものである。配管
13の上側に設けた給・排気兼用ダクト10の下部ダクト10
lの開口部、及び配管13の下側に設けた給・排気兼用ダ
クト10の上部ダクト10uの開口部は、発熱密度の大きい
垂直直管部に向けられている。第４図でも第３図と同様
の運転モードをＩからIIへ、IIからＩへ切換えることに
より風の流れを変え、配管13周囲の温度を均一にする。FIG. 4 shows an example in which the supply / exhaust duct 10 is arranged farther from the biological shield 3 than in FIG. The air supply / exhaust duct 10 is constructed by tilting the air supply / exhaust duct 10 shown in FIG. 3 by 45 degrees, installing a partition plate 12 of a heat insulating material in the horizontal direction, and dividing the duct into an upper duct 10u and a lower duct 10l. . Plumbing
Lower duct 10 of the air supply / exhaust duct 10 provided above 13
The opening of l and the opening of the upper duct 10u of the duct 10 for both supply and exhaust air provided on the lower side of the pipe 13 are directed to the vertical straight pipe portion having a large heat generation density. In FIG. 4 as well, the operating mode similar to that in FIG. 3 is switched from I to II and from II to I to change the flow of wind and make the temperature around the pipe 13 uniform.
第５図は、運転モード毎のダクト内の風が流れを示し
たものである。11は給・排気切換器を示し、弁の動作に
より風路を変えるものである。運転モードＩでは冷却器
９で冷却された風は、送風器８により給・排気切換器11
を介して給・排気兼用ダクト10の上部ダクト10uに導か
れ、その開口部より格納容器内に吹き出される。一方、
格納雰囲気内で暖められた風は、給・排気兼用ダクト10
の下部ダクト10lより排気され、給・排気切換器11を経
て冷却器９に導かれる。運転モードIIでは、給・排気切
換器11が第５図（ｂ）のように動作することにより、送
風機８からの風は給・排気兼用ダクト10の上部ダクト10
lに導かれ、その開口部より格納容器１内に吹き出され
る。給・排気兼用ダクトの上部ダクト10uは排気として
使われ、この排気された風は、上部ダクト10uにより、
給・排気切換器11を介して冷却器９に導かれる。このよ
うにして、給・排気切換器11により、給・排気兼用ダク
ト10の上部ダクト10u及び下部ダクト10lにおける給・排
気の使い分けをする。FIG. 5 shows the flow of wind in the duct for each operation mode. Reference numeral 11 denotes a supply / exhaust switch, which changes the air passage by operating the valve. In the operation mode I, the air cooled by the cooler 9 is supplied by the blower 8 to the air supply / exhaust switch 11
Through the upper and lower ducts 10u of the air-supply / exhaust duct 10 and is blown into the storage container through the opening. on the other hand,
The air heated in the storage atmosphere is used for both supply and exhaust duct 10
The air is exhausted from the lower duct 10l, and is guided to the cooler 9 through the supply / exhaust changeover device 11. In the operation mode II, the air supply / exhaust selector 11 operates as shown in FIG. 5 (b), so that the wind from the blower 8 is supplied to the upper duct 10 of the air supply / exhaust duct 10.
It is guided to the l and is blown into the storage container 1 through the opening. The upper duct 10u of the air supply / exhaust duct is used as exhaust air, and this exhausted wind is discharged by the upper duct 10u.
It is guided to the cooler 9 via the supply / exhaust switch 11. In this manner, the supply / exhaust switch 11 selectively uses the supply / exhaust in the upper duct 10u and the lower duct 10l of the dual supply / exhaust duct 10.
第６図は、給・排気兼用ダクト10からの分岐ダクトの
例を示したものである。給・排気兼用ダクト10から分岐
したダクトＢ部は、第１図で示したペデスタル部4,生体
遮蔽壁３と圧力容器２の間隙部、格納容器１最上部等へ
と導かれる。すなわち給・排気兼用ダクト10の上部ダク
ト10u及び下部ダクト10lからそれぞれ分岐ダクトを設け
ることにより、前述の空間での給・排気が達成される。
また、給・排気位置が交互に変わることにより、前述の
空間部での雰囲気の撹拌ができ、温度分布の均一化が計
れる。FIG. 6 shows an example of a branch duct from the air supply / exhaust duct 10. The duct B portion branched from the air supply / exhaust duct 10 is guided to the pedestal portion 4, the gap between the living body shielding wall 3 and the pressure vessel 2 and the uppermost portion of the storage vessel 1 shown in FIG. That is, by providing branch ducts from the upper duct 10u and the lower duct 10l of the air supply / exhaust duct 10 respectively, the air supply / exhaust in the aforementioned space is achieved.
Further, by alternately changing the supply / exhaust positions, the atmosphere in the space can be agitated, and the temperature distribution can be made uniform.
第７図は、給気専用及び排気専用の分岐ダクトの例を
示す。第６図では分岐ダクトは給・排気兼用として示し
たが、ここでは給気専用及び排気専用の分岐ダクトの例
を示す。格納容器内では場所によつては給気専用ダクト
又は排気専用ダクトを設けた方が温度分布均一の点から
有利な場合がある。とくに温風が集中しやすい格納容器
１最上部では、排気専用ダクトを設けた方が効果的であ
る。第７図では、給気専用分岐部に給気用効止弁14b,排
気専用分岐部に排気用逆止弁14eを設けることにより上
記目的を容易に達成できる。給気用効止弁14b,排気用逆
止弁14eは支点部に板を取付けたものであり、風圧が動
作したとき支点部が回転し、板が動作する簡単な構造の
ものであり、一般によく使用されるものである。FIG. 7 shows an example of branch ducts dedicated to air supply and exhaust. In FIG. 6, the branch duct is shown as being used for both supply and exhaust, but here an example of a branch duct dedicated for supply and exhaust is shown. Depending on the location in the containment vessel, it may be advantageous to provide a duct dedicated to air supply or a duct dedicated to exhaust in terms of uniform temperature distribution. Particularly, it is more effective to provide a duct for exclusive use of exhaust at the uppermost part of the storage container 1 where hot air is easily concentrated. In FIG. 7, the above-mentioned object can be easily achieved by providing the air supply stop valve 14b in the air supply branch portion and the exhaust check valve 14e in the exhaust gas branch portion. The intake check valve 14b and the exhaust check valve 14e have plates attached to fulcrums, and the fulcrums rotate when the wind pressure operates, and the plates have a simple structure. It is often used.
第８図は従来例と本実施例による格納容器の高さ方向
における無次元温度分布の比較を示したものである。本
実施例の温度分布の変動は、給・排気兼用ダクトの設置
位置の影響によるものである。FIG. 8 shows a comparison of the dimensionless temperature distributions in the height direction of the storage container according to the conventional example and this embodiment. The fluctuation of the temperature distribution in this embodiment is due to the influence of the installation position of the duct for both supply and exhaust.
第９図は、第８図の格納容器の高さ方向の温度分布を
制御するためのブロツクを示した図である。17d1〜dn,u
1〜unは二つの入力信号の左が正のときのみ出力を出す
コンパレータ、19は一定時間間隔毎にパルス信号を発生
するパルス発振器、21はＴフリツプフロツプを示す。給
・排気切換器駆動装置22は、例えば、モータと減速機の
組合せを使用し、このモータはフリツプフロツプの出力
Ｑが「１」のとき正転し、フリツプフロツプ21の出力
が「１」のとき反転動作するものとする。給・排気切換
器111,112は、例えば第５図に示した弁を示し、四方向
の風道内の風の流れを切換えるものであり、給・排気切
換器駆動装置22のモータの正・反転に応じて動作するも
のとする。例えば、給・排気切換器111,112の正転動作
は、第５図の運転モードＩからIIに移るときの動作を仮
定し、反転動作は、運転モードIIからＩに移る動作とす
る。格納容器１内に設けた温度検出器151,152……15nの
うち１個以上の温度指示値が下限温度設定器16dの指示
値を超えた場合、その温度検出器15に対応するコンパレ
ータ17の出力がオンとなり、OR回路18の出力がオンにな
り、パルス発振器19からのパルス信号とのAND回路20に
よりフリツプフロツプ21が動作し、出力Ｑが「０」から
「１」に変わる。これにより給・排気切換器駆動装置22
のモータは正転し、減速機を介して給・排気切換器111,
112は第５図に示すように運転モードＩの状態からIIの
状態に切換わる。OR回路18の出力がオンのまま、すなわ
ち格納容器１内の温度が上限設定値と下限設定値の間を
外れた場合、引続きパルス発振器19から発するパルス信
号とのAND回路20によりフリツプフロツプ21の入力にパ
ルス信号が入力し、フリツプフロツプ21の出力Ｑが
「１」から「０」に、出力が「０」から「１」に変わ
る。これにより給排気切換器駆動装置22のモータは反転
し、減速機を介して給・排気切換器111,112は第５図の
運転モードIIの状態からＩに状態に戻る。第９図におけ
る温度検出器151,152……15nは熱電対、下限温度設定器
16d及び上限温度設定器16uはポテンシヨメータを用い
る。コンパレータ17,OR回路18,AND回路20,Tフリツプフ
ロツプ21,パルス発振器19は市販品を用いる。給・排気
切換器駆動装置22はモータと減速機の組合せであり、給
・排気切換器111,112は第５図に示すような弁を用い
る。FIG. 9 is a diagram showing a block for controlling the temperature distribution in the height direction of the storage container in FIG. 17d1 ~ dn, u
1 to un are comparators that output only when the left of the two input signals is positive, 19 is a pulse oscillator that generates a pulse signal at regular time intervals, and 21 is a T flip-flop. The supply / exhaust gas switching device drive device 22 uses, for example, a combination of a motor and a speed reducer. This motor rotates normally when the output Q of the flip-flop is "1", and reverses when the output of the flip-flop 21 is "1". Shall work. The supply / exhaust selectors 11 1 and 11 2 are, for example, the valves shown in FIG. 5, and switch the flow of air in the air passages in four directions.・ It shall operate according to the reversal. For example, the forward rotation operation of the supply / exhaust changeover devices 11 1 and 11 2 is assumed to be the operation when shifting from the operation mode I to II in FIG. 5, and the reversing operation is the operation shifting from the operation mode II to I. . If one or more of the temperature detectors 15 1 , 15 2 ... 15 n provided in the containment vessel 1 exceed the indicated value of the lower limit temperature setter 16d, the temperature detector 15 is handled. The output of the comparator 17 is turned on, the output of the OR circuit 18 is turned on, the flip-flop 21 operates by the AND circuit 20 with the pulse signal from the pulse oscillator 19, and the output Q changes from "0" to "1". As a result, the supply / exhaust gas changer drive device 22
Motor rotates in the normal direction, and the supply / exhaust selector 11 1 ,
11 2 switches from the operation mode I state to the II state as shown in FIG. If the output of the OR circuit 18 remains on, that is, if the temperature inside the containment vessel 1 deviates between the upper limit setting value and the lower limit setting value, the AND circuit 20 continues to input the flip-flop 21 with the pulse signal generated from the pulse oscillator 19. A pulse signal is input to the flip-flop 21, and the output Q of the flip-flop 21 changes from "1" to "0" and the output changes from "0" to "1". As a result, the motor of the air supply / exhaust gas switching device driving device 22 reverses, and the air supply / exhaust gas switching devices 11 1 and 11 2 return to the state I from the operation mode II in FIG. In Fig. 9, temperature detectors 15 1 , 15 2 ... 15 n are thermocouples and lower limit temperature setters.
A potentiometer is used for 16d and the upper limit temperature setter 16u. As the comparator 17, the OR circuit 18, the AND circuit 20, the T flip-flop 21, and the pulse oscillator 19, commercially available products are used. The supply / exhaust gas switching device driving device 22 is a combination of a motor and a speed reducer, and the supply / exhaust gas switching devices 11 1 and 11 2 use valves as shown in FIG.
第10図は冷却器9,送風機８及び給・排気切換器11を格
納容器１の外側に配置し、かつ第１図で示した二つの空
気調和装置をつないだ例を示す。連結弁23を設けること
により冷却器91,送風機81,給・排気切換器111が万一動
作不能となつても、第１図で示した別系統の冷却器92,
送風機82,給・排気切換器112でバツクアツプ可能とな
る。FIG. 10 shows an example in which the cooler 9, the blower 8 and the air supply / exhaust switch 11 are arranged outside the containment vessel 1 and the two air conditioners shown in FIG. 1 are connected. Even if the cooler 9 1 , the blower 8 1 , and the air supply / exhaust gas changer 11 1 become inoperable by providing the connecting valve 23, the cooler 9 2 of another system shown in FIG.
It is possible to back up with the blower 8 2 and the air supply / exhaust gas switch 11 2 .
第12図にワンステツプ先行発明の実施例を示す。24は
給気口ノズルであり、給・排気兼用ダクト10の上部ダク
ト10u及び下部ダクト10l設けたものである。給気口ノズ
ル24は近傍の雰囲気温度により先端の開口面積を変え、
雰囲気への風速の大きさを変えるものとする。雰囲気温
度が高い場合には給気口ノズル24の先端の開口面積は大
きくなり、この給気口ノズル24先端からの風量が増し、
雰囲気温度が低い場合には逆に風量が減る。このように
すれば全体に小さな冷却風量でより効果的に雰囲気温度
の均一化が計れる。FIG. 12 shows an embodiment of the one-step preceding invention. Reference numeral 24 denotes an air supply port nozzle, which is provided with an upper duct 10u and a lower duct 10l of the air supply / exhaust duct 10. The air inlet nozzle 24 changes the opening area of the tip according to the ambient temperature in the vicinity,
The size of the wind speed to the atmosphere shall be changed. When the ambient temperature is high, the opening area of the tip of the air supply nozzle 24 becomes large, and the air volume from the tip of the air supply nozzle 24 increases,
On the contrary, when the ambient temperature is low, the air volume decreases. By doing so, the temperature of the atmosphere can be more effectively made uniform with a small amount of cooling air.
本実施例によれば、空調ダクトをらせん状に配置し、
かつ給・排気ダクトを兼用しているので空調ダクトの物
量を少なくすることができる。また配管等の発熱部の上
下空間に給・排気兼用の空調ダクトを配置し、各上・下
空間の空調ダクト間の風の流れを周期的に上側から下
側、下側から上側へと切換えることにより風の流れを変
え、雰囲気の温度空間領域を撹拌する効果があるので雰
囲気の温度分布の均一化が計れる。さらに発熱源である
配管の近傍に空調ダクトを設けることにより、温度の周
囲への拡散を最小限にできるので吹出口温度の設定を従
来より高くでき、冷却器の容量を低減できる。According to this embodiment, the air conditioning ducts are arranged in a spiral shape,
Moreover, since the air supply / exhaust duct is also used, the amount of material in the air conditioning duct can be reduced. Air-conditioning ducts for both air supply and exhaust are placed above and below the heat generating part such as piping, and the air flow between the air-conditioning ducts in the upper and lower spaces is periodically switched from the upper side to the lower side and from the lower side to the upper side. This has the effect of changing the flow of air and stirring the temperature space region of the atmosphere, so that the temperature distribution of the atmosphere can be made uniform. Furthermore, by providing an air-conditioning duct near the pipe that is the heat source, the diffusion of the temperature to the surroundings can be minimized, so that the outlet temperature can be set higher than before and the capacity of the cooler can be reduced.
上下に配された風道の開口間で、一方の開口より気体
を吐出し、他方の開口で該吐出された気体を吸入し、切
換装置により前記他方の開口より気体を吐出し、前記一
方の開口より該吐出された気体を吸入するよう切換え、
また該切換を繰返すことにより、上下に配された風道間
の熱は該風道間より外にあまり拡散せず吸入側の風道よ
り除去され、また上下の風道間の気体は撹拌されるので
該風道間の温度が均一化となる。また上下風道間の熱の
拡散が少ないことにより、風道の吹出口温度を従来の装
置より高くしても上下風道間の温度は従来の装置と同じ
にすることができるので空気調和装置の冷却器の容量の
低減ができる。さらに、風道を圧力容器周囲の配管群部
にらせん状に配置したことにより、少ないダクト量で配
管を上下に挟むことができる。これにより、ダクト物量
の低減という効果を生じる。Between the openings of the air passages arranged above and below, gas is discharged from one opening, the discharged gas is sucked in from the other opening, and the gas is discharged from the other opening by the switching device, Switching to inhale the discharged gas from the opening,
Further, by repeating the switching, the heat between the air passages arranged above and below is not diffused much outside the air passages and is removed from the air passage on the suction side, and the gas between the air passages above and below is agitated. Therefore, the temperature between the air passages becomes uniform. Also, since the heat diffusion between the upper and lower airways is small, the temperature between the upper and lower airways can be the same as that of the conventional apparatus even if the outlet temperature of the airway is higher than that of the conventional apparatus. The capacity of the cooler can be reduced. Further, by arranging the air passages in a spiral shape in the pipe group portion around the pressure vessel, the pipes can be vertically sandwiched with a small amount of ducts. This produces the effect of reducing the amount of duct material.
第１図は本発明の原子炉格納容器内での実施例を示す縦
断面図、第２図〜第４図は第１図の部分拡大図、第５図
〜第７図は風道内の気体の流れを示す風道断面図、第８
図は格納容器内の高さ方向の温度分布を示す図、第９図
は格納容器内温度制御ブロツク図、第10図は風道内の気
体の流れを示す風道断面図、第11図は原子炉格納容器内
での従来例を示す縦断面図、第12図はワンステツプ先行
発明例を示した風道斜視図である。 １……格納容器、５……ダクト、８……送風機、９……
冷却器、11……給・排気切換器。FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention in a reactor containment vessel, FIGS. 2 to 4 are partially enlarged views of FIG. 1, and FIGS. 5 to 7 are gases in a wind passage. Cross-sectional view of the wind passage showing the flow of No. 8
The figure shows the temperature distribution in the containment vessel in the height direction. Fig. 9 is a block diagram for controlling the temperature in the containment vessel. Fig. 10 is a cross-sectional view of the gas flow in the wind passage. Fig. 11 is an atomic diagram. FIG. 12 is a vertical cross-sectional view showing a conventional example in a furnace containment vessel, and FIG. 12 is a wind passage perspective view showing a one-step preceding invention example. 1 ... storage container, 5 ... duct, 8 ... blower, 9 ...
Cooler, 11 …… Supply / exhaust switch.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭54−71291（ＪＰ，Ａ) 特開 昭60−53886（ＪＰ，Ａ) 特開 昭60−178240（ＪＰ，Ａ) 実開 昭59−57719（ＪＰ，Ｕ) 実開 昭60−185140（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-54-71291 (JP, A) JP-A-60-53886 (JP, A) JP-A-60-178240 (JP, A) Actual development Sho-59- 57719 (JP, U) Actual development Sho 60-185140 (JP, U)
Claims (3)
風道であって、上部に配置された風道は下方に開いた開
口を有し、下部に配置された風道は上方に開いた開口を
有する風道と； 該風道に接続し、一方の風道に給気用気体を供給し、他
方の風道から排気を吸引する流路と前記一方の風道から
排気を吸引し、前記他方の風道に給気用気体を供給する
流路とを有し、前記両流路を互いに切換える給排気切換
装置と； 該給排気切換装置に接続し、給気を供給し排気を吸引す
る給排気装置と； を備え、 前記風道が圧力容器周囲の配管群部にらせん状に配置さ
れた風道であることを特徴とする原子炉格納容器の空気
調和装置。1. An air duct arranged at intervals in the up-and-down direction, wherein an air passage arranged at an upper part has an opening opened downward, and an air passage arranged at a lower part is opened upward. A wind passage having an opening; a flow path connected to the wind passage, supplying air supply gas to one wind passage, sucking exhaust gas from the other wind passage, and sucking exhaust gas from the one wind passage A supply / exhaust switching device that has a flow path for supplying the supply gas to the other air passage, and switches the both flow paths to each other; An air conditioner for a reactor containment vessel, comprising: an air supply / exhaust device for sucking; and the air passage is a spiral air passage arranged in a pipe group around the pressure vessel.
て上部風道部と下部風道部に分け、該上部風道部には上
方に開いた開口を設け、該下部風道部には下方に開いた
開口を設けた二重風道であることを特徴とする特許請求
の範囲第１項記載の装置。2. The air passage is divided into an upper air passage portion and a lower air passage portion by vertically partitioning the air passage with a partition plate, and the upper air passage portion is provided with an opening that is open upward, The device according to claim 1, wherein the passage is a double wind passage having an opening that opens downward.
周期で切換える制御装置を有することを特徴とする特許
請求の範囲第１項または第２項記載の装置。3. The device according to claim 1, wherein the air supply / exhaust gas switching device has a control device for switching between the both flow paths at a predetermined cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62070010A JPH083547B2 (en) | 1987-03-24 | 1987-03-24 | Air conditioner for PCV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62070010A JPH083547B2 (en) | 1987-03-24 | 1987-03-24 | Air conditioner for PCV |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63235896A JPS63235896A (en) | 1988-09-30 |
| JPH083547B2 true JPH083547B2 (en) | 1996-01-17 |
Family
ID=13419202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62070010A Expired - Lifetime JPH083547B2 (en) | 1987-03-24 | 1987-03-24 | Air conditioner for PCV |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH083547B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9373802B2 (en) | 2011-02-07 | 2016-06-21 | Idemitsu Kosan Co., Ltd. | Biscarbazole derivatives and organic electroluminescence device employing the same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5471291A (en) * | 1977-11-16 | 1979-06-07 | Hitachi Plant Eng & Constr Co Ltd | Air conditioner in reactor container |
| JPS5957719U (en) * | 1982-10-12 | 1984-04-14 | 三菱重工業株式会社 | air conditioner |
| JPS6053886A (en) * | 1983-09-02 | 1985-03-27 | 株式会社日立製作所 | Dry well cooling system of boiling-water type nuclear electric power generating facility |
| JPS60178240A (en) * | 1984-02-23 | 1985-09-12 | Matsushita Electric Ind Co Ltd | Blast direction change-over device for duct |
| JPS60185140U (en) * | 1984-05-18 | 1985-12-07 | 松下精工株式会社 | double layer pipe |
-
1987
- 1987-03-24 JP JP62070010A patent/JPH083547B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9373802B2 (en) | 2011-02-07 | 2016-06-21 | Idemitsu Kosan Co., Ltd. | Biscarbazole derivatives and organic electroluminescence device employing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63235896A (en) | 1988-09-30 |
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