JPH0226079Y2 - - Google Patents
Info
- Publication number
- JPH0226079Y2 JPH0226079Y2 JP1982049961U JP4996182U JPH0226079Y2 JP H0226079 Y2 JPH0226079 Y2 JP H0226079Y2 JP 1982049961 U JP1982049961 U JP 1982049961U JP 4996182 U JP4996182 U JP 4996182U JP H0226079 Y2 JPH0226079 Y2 JP H0226079Y2
- Authority
- JP
- Japan
- Prior art keywords
- header
- heat
- supply
- heater
- discharge
- 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
- 238000001816 cooling Methods 0.000 claims description 16
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 8
- 230000001737 promoting effect Effects 0.000 claims description 7
- 238000009413 insulation Methods 0.000 description 6
- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001105 regulatory effect 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
-
- 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
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【考案の詳細な説明】
本考案は液体金属を熱媒体とする高速増殖炉用
空気冷却器に係り、特にヘツダ室内においてヒー
タ熱の自然対流を惹起させるようにすることによ
り、給排ヘツダを効率良く加熱することができ、
熱媒体の凍結を防止するためのヒータのエネルギ
消費量を節減し得るようにしたものである。[Detailed description of the invention] The present invention relates to an air cooler for fast breeder reactors that uses liquid metal as a heat medium.In particular, by inducing natural convection of heater heat in the header chamber, the supply/discharge header can be efficiently operated. Can be heated well,
The energy consumption of the heater for preventing freezing of the heat medium can be reduced.
一般にナトリウム等の液体金属を冷却材として
いる高速増殖炉は、その冷却系に炉の安全を図る
ための空気冷却器を備えている。例えば第１図に
示す如く、高速増殖炉１においては、これを直接
冷却する一次冷却系２には中間熱交換器３を介し
て同じく液体金属を熱媒体とする二次冷却系４が
接続され、この二次冷却系４に空気冷却器５が設
けられている。そして、この空気冷却器５は、通
常、停止状態にあるが、緊急時あるいは炉１の停
止時にその出力熱を迅速に除去するために稼動さ
れるようになされている。なお、６は二次冷却系
４に接続された蒸気発生器であり、熱交換によつ
て発生された蒸気はタービン７等に導かれる。 Generally, fast breeder reactors that use liquid metal such as sodium as a coolant are equipped with an air cooler in their cooling system to ensure the safety of the reactor. For example, as shown in FIG. 1, in a fast breeder reactor 1, a primary cooling system 2 that directly cools the reactor is connected via an intermediate heat exchanger 3 to a secondary cooling system 4 that also uses liquid metal as a heat medium. , this secondary cooling system 4 is provided with an air cooler 5 . Although this air cooler 5 is normally in a stopped state, it is operated in order to quickly remove the output heat in an emergency or when the furnace 1 is stopped. Note that 6 is a steam generator connected to the secondary cooling system 4, and the steam generated by heat exchange is guided to the turbine 7 and the like.
ところで、この空気冷却器５は上述したように
液体金属を熱媒体としているため、そのチヤージ
等において熱媒体が伝熱管を通る際に凍結するこ
とを防止する目的で予熱用ヒータを備えており、
このヒータは一般に熱媒体の給排ヘツダを区画収
容するヘツダ室や上記伝熱管が配列された空気冷
却通路等に設けられている。 By the way, since this air cooler 5 uses liquid metal as a heat medium as described above, it is equipped with a preheating heater for the purpose of preventing the heat medium from freezing when passing through the heat transfer tube during charging etc.
This heater is generally provided in a header chamber that partitions and accommodates a heat medium supply/discharge header, an air cooling passage in which the heat transfer tubes are arranged, or the like.
特に、ヘツダ室にヒータを設ける場合において
は、上下に配置された給排ヘツダ（一般に上部に
供給ヘツダを、下部に排出ヘツダを配置してあ
る）に熱を均一に与えられるようにしなければな
らない。そのためには、ヒータをヘツダ室内の最
下部に配置すれば良いのであるが、下部には熱媒
体の漏洩を検知する機器等を設置する必要がある
ため、単一のヒータを設けることは困難であつ
た。このため、従来では、給排ヘツダにシーズヒ
ータを直接取付けていたものである。しかし乍
ら、、これら給排ヘツダにシーズヒータを直接取
付けることは手間がかかるばかりでなく材料を多
く必要とし、更にはエネルギ消費量も多く、不経
済であつた。 In particular, when installing a heater in the header room, it must be possible to uniformly apply heat to the supply/discharge headers arranged above and below (generally, the supply header is arranged at the top and the discharge header is arranged at the bottom). . To achieve this, it is sufficient to place the heater at the bottom of the header chamber, but it is difficult to install a single heater because it is necessary to install equipment to detect heat medium leakage at the bottom. It was hot. For this reason, in the past, a sheathed heater was attached directly to the supply/discharge header. However, attaching the sheathed heater directly to these supply/discharge headers is not only time-consuming and requires a large amount of materials, but also consumes a large amount of energy, making it uneconomical.
そこで、本考案は上記実情に着目して創案され
たものであり、単一のヒータを設けてヘツダ室内
を均一に加熱することができ、極めて経済的であ
り且つ容易に製作することができる高速増殖炉用
空気冷却器を提供することを目的とする。 Therefore, the present invention was devised by focusing on the above-mentioned circumstances, and is a high-speed system that can uniformly heat the inside of the header chamber by providing a single heater, and is extremely economical and easy to manufacture. The purpose of the present invention is to provide an air cooler for a breeder reactor.
以下に本考案の好適一実施例を第２図及び第３
図に基づいて詳述する。図において、５はナトリ
ウム等の液体金属を熱媒体とする高速増殖炉用空
気冷却器であり、その本体ケーシング８内にはこ
れを上下方向に貫通する空気冷却通路９が空気断
熱室１０を介して形成されている。即ち、本体ケ
ーシング８は矩形断面の箱状に形成され、その内
周部には仕切壁１１で各辺毎に区画形成された空
気断熱室１０を有し、これら空気断熱室１０によ
つて上記空気冷却通路９が囲繞形成されている。
そして、その空気冷却通路９と連通させるべく本
体ケーシング８の下端部には送風機１２が、且つ
上端部には排風ダクト１３がそれぞれ設けられて
いる。 A preferred embodiment of the present invention is shown below in Figures 2 and 3.
This will be explained in detail based on the figures. In the figure, reference numeral 5 denotes an air cooler for a fast breeder reactor that uses liquid metal such as sodium as a heat medium.Inside the main body casing 8, there is an air cooling passage 9 passing through it in the vertical direction through an air insulation chamber 10. It is formed by That is, the main body casing 8 is formed into a box shape with a rectangular cross section, and has air insulation chambers 10 partitioned on each side by partition walls 11 on its inner periphery. An air cooling passage 9 is formed around it.
A blower 12 is provided at the lower end of the main body casing 8 to communicate with the air cooling passage 9, and an exhaust duct 13 is provided at the upper end.
一方、本体ケーシング８の一側にある空気断熱
室１０1は熱媒体給排用のヘツダ１４，１５を収
容するためのヘツダ室１６として形成され、この
ヘツダ室１６内の上部に供給ヘツダ１４を且つ下
部に排出ヘツダ１５をそれぞれ配設している。そ
して、上記供給ヘツダ１４と排出ヘツダ１５との
間は多数の伝熱管１７で結ばれ、これら伝熱管１
７は空気冷却通路９を横切つてヘツダ室１６とこ
れに対向した空気断熱室１０2との間を往復すべ
く蛇行状に配設されている。従つて、送風機１２
により空気冷却通路９内に送風することにより、
伝熱管１７内を流れる熱媒体を冷却するように構
成されている。 On the other hand, the air insulation chamber 10 1 on one side of the main body casing 8 is formed as a header chamber 16 for accommodating headers 14 and 15 for supplying and discharging heat medium. In addition, a discharge header 15 is disposed at the bottom. The supply header 14 and the discharge header 15 are connected by a large number of heat exchanger tubes 17, and these heat exchanger tubes 1
7 is arranged in a meandering manner so as to cross the air cooling passage 9 and reciprocate between the header chamber 16 and the air insulation chamber 10 2 facing thereto. Therefore, the blower 12
By blowing air into the air cooling passage 9,
It is configured to cool the heat medium flowing inside the heat transfer tube 17.
このように構成された空気冷却器５には、熱媒
体たる液体金属の凍結を防止するためにヘツダ室
１６や空気冷却通路９等に電気ヒータ等からなる
予熱ヒータが設けられている。そして、本考案は
特に、上記ヘツダ室１６の加熱構造に特長を有す
るものである。即ち、ヘツダ室１６内には、熱対
流を起させるべく対流促進板１８がヘツダ室内空
間部に直立した状態でヘツダ１４，１５に沿つた
方向に設けられ、この対流促進板１８によつてヘ
ツダ室１６内に区画された対流路１９にヒータ２
０を設けた構成が採られている。具体的には、対
流促進板１８の片面の下側にヒータ２０を設け
て、自然対流の発生を容易にしてある。 In the air cooler 5 configured in this manner, a preheating heater such as an electric heater is provided in the header chamber 16, the air cooling passage 9, etc. in order to prevent the liquid metal serving as the heat medium from freezing. The present invention is particularly characterized by the heating structure of the header chamber 16. That is, a convection promoting plate 18 is provided in the header chamber 16 in a direction along the headers 14 and 15 in a state that stands upright in the header indoor space in order to cause thermal convection. A heater 2 is installed in a convection path 19 divided within the chamber 16.
A configuration in which 0 is provided is adopted. Specifically, a heater 20 is provided below one side of the convection promoting plate 18 to facilitate the generation of natural convection.
なお、２１は空気冷却通路９内の送風機１２側
に設けられたヒータ、２２はヘツダ室１６内の下
部に設けられた熱媒体受けであり、この熱媒体受
け２２内には熱媒体漏洩検知器が設けられること
になる。一方、伝熱管１７が折返す上記空気断熱
室１０2内の下部には排出ヘツダ１５等空間を占
有するものがないため、ここにヒータ２３が設け
られることとなる。 In addition, 21 is a heater provided on the side of the blower 12 in the air cooling passage 9, 22 is a heat medium receiver provided in the lower part of the header chamber 16, and a heat medium leak detector is installed in this heat medium receiver 22. will be established. On the other hand, since there is nothing occupying space such as the discharge header 15 in the lower part of the air insulation chamber 10 2 where the heat transfer tube 17 is folded back, the heater 23 is provided here.
次に、上記実施例の作用を述べる。 Next, the operation of the above embodiment will be described.
空気冷却器は、炉１が停止したり、緊急事態が
発生した場合に崩壊熱や出力熱を効果的に冷却す
べく運転されるものであり、通常は停止状態にあ
る。この停止状態においても、伝熱管１７内には
少量の熱媒体が循環されていることにより、給排
ヘツダ１４，１５及び伝熱管１７は加熱されてい
るため、熱媒体が凍結する虞れはない。 The air cooler is operated to effectively cool decay heat and output heat when the furnace 1 is stopped or an emergency situation occurs, and is normally in a stopped state. Even in this stopped state, the supply/discharge headers 14 and 15 and the heat transfer tube 17 are heated because a small amount of heat medium is circulated within the heat transfer tube 17, so there is no risk of the heat transfer medium freezing. .
ところが、新たに熱媒体を充填する場合などに
おいては、給排ヘツダ１４，１５等の温度が低い
ため、熱媒体たる液体金属（溶融金属）は給排ヘ
ツダ１４，１５内において急激に冷され凍結固化
してしまうという問題がある。そこで、熱媒体の
充填に際して、本体ケーシング８内に装備された
各ヒータ２０，２１，２３を発熱させ、給排ヘツ
ダ１４，１５等を予熱しておく。 However, when filling a new heat medium, etc., the temperature of the supply/discharge headers 14, 15, etc. is low, so the liquid metal (molten metal) serving as the heat medium is rapidly cooled and frozen inside the supply/discharge headers 14, 15. The problem is that it solidifies. Therefore, when filling the heat medium, the heaters 20, 21, 23 installed in the main body casing 8 are made to generate heat to preheat the supply/discharge headers 14, 15, etc.
ここで、ヘツダ室１６内の加熱状況を説明する
と、ヘツダ室１６内には対流促進板１８が設けら
れ、対流路１９が形成されているため、ヒータ２
０から発散される熱はその対流路１９によつて流
れが規制され、これに沿つて自然対流を惹き起
し、ヘツダ室１６内を循環することになる。従つ
て、ヘツダ室１６内を均一に加熱することができ
ることから、上下に配設された供給ヘツダ１４及
び排出ヘツダ１５をむらなく予熱することができ
る。殊に、本考案によれば、給排ヘツダにシーズ
ヒータを直接取付けていた従来装置と異なり、ヘ
ツダ室１６内に単なる板材からなる対流促進板１
８とヒータ２０を組込むだけで良いので、極めて
簡単に製作することができ、且つ単一にまとまつ
たヒータ２０で良いため、製作コスト及び運転コ
ストを大巾に低減することができる。また、給排
ヘツダ１４，１５間にヒータ２０を設けることが
でき、ヒータの設置スペースをとらないため、本
体ケーシング８を小さく形成することができ、空
気冷却器の小型化を推進できる。 Here, to explain the heating situation in the header chamber 16, a convection promoting plate 18 is provided in the header chamber 16, and a convection passage 19 is formed, so that the heater 2
The flow of the heat radiated from the header 0 is regulated by the convection path 19, causing natural convection along this path and circulating within the header chamber 16. Therefore, since the inside of the header chamber 16 can be heated uniformly, the supply header 14 and the discharge header 15 arranged above and below can be evenly preheated. In particular, according to the present invention, unlike the conventional device in which a sheathed heater was directly attached to the supply/discharge header, a convection promoting plate 1 made of a simple plate material is installed in the header chamber 16.
8 and the heater 20, it is extremely easy to manufacture, and since a single heater 20 is sufficient, the manufacturing cost and operating cost can be greatly reduced. Further, since the heater 20 can be provided between the supply/discharge headers 14 and 15, and the installation space for the heater is not taken up, the main body casing 8 can be formed small, and the size of the air cooler can be promoted.
一方、ヘツダ室１６に対向した空気断熱室１０
２及び空気冷却通路９は、下部に据付けられたヒ
ータ２１，２３からの熱の上昇気流によつて均一
に加熱されるため、これらの部分に位置された伝
熱管１７をむらなく予熱することができる。よつ
て、これら給排ヘツダ１４，１５及び伝熱管１７
を効率良く充分に予熱することができ、熱媒体の
凍結を未然に防止することができる。 On the other hand, the air insulation chamber 10 facing the header chamber 16
2 and the air cooling passage 9 are uniformly heated by the rising heat from the heaters 21 and 23 installed at the bottom, so that the heat transfer tubes 17 located in these parts can be evenly preheated. can. Therefore, these supply/discharge headers 14, 15 and heat exchanger tubes 17
can be efficiently and sufficiently preheated, and freezing of the heating medium can be prevented.
以上要するに本考案によれば次のような優れた
効果を発揮する。 In summary, the present invention exhibits the following excellent effects.
(1) ヘツダ室内において自然対流を積極的に起さ
せることができ、ヘツダ室内を均一に加熱する
ことができるため、単一のヒータにて給排ヘツ
ダを効率良く十分予熱することができる。(1) Since natural convection can be actively generated in the header chamber and the header chamber can be heated uniformly, the supply/discharge header can be efficiently and sufficiently preheated with a single heater.
(2) 構造が簡単であり、製作が容易にできること
は勿論、製作コストがかからず、且つ単一のヒ
ータでエネルギ消費も少なく、極めて経済的で
ある。(2) It has a simple structure and is easy to manufacture, and it is extremely economical, with no manufacturing costs and a single heater that consumes little energy.
第１図は本考案を説明するための高速増殖炉冷
却系の概略図、第２図は本考案の一実施例を示す
空気冷却器の要部断面図、第３図は第２図Ａ−Ａ
矢視断面図である。
図中、１４，１５は給排ヘツダ、１６はヘツダ
室、１８は対流促進板、１９は対流路、２０はヒ
ータである。
Fig. 1 is a schematic diagram of a fast breeder reactor cooling system for explaining the present invention, Fig. 2 is a sectional view of essential parts of an air cooler showing an embodiment of the present invention, and Fig. 3 is Fig. 2A- A
It is an arrow sectional view. In the figure, 14 and 15 are supply/discharge headers, 16 is a header chamber, 18 is a convection promoting plate, 19 is a convection path, and 20 is a heater.
Claims (1)
これら給排ヘツダをヘツダ室内に設けると共に、
給排ヘツダ間を空気冷却通路を通る伝熱管で結ん
だ高速増殖炉用空気冷却器において、上記ヘツダ
室内に熱対流を起させるべく対流促進板を設ける
と共に、該対流促進板によつて区画される対流路
にヒータを設けて、ヘツダ室内に熱を循環させつ
つ上記給排ヘツダを加熱するように構成したこと
を特徴とする高速増殖炉用空気冷却器。 It has a heat medium supply/discharge header made of liquid metal,
These supply/discharge headers are installed in the header chamber, and
In an air cooler for a fast breeder reactor in which supply and exhaust headers are connected by a heat transfer tube passing through an air cooling passage, a convection promoting plate is provided to cause heat convection in the header chamber, and the header chamber is partitioned by the convection promoting plate. 1. An air cooler for a fast breeder reactor, characterized in that a heater is provided in a convection path to heat the supply/discharge header while circulating heat within the header chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982049961U JPS58154498U (en) | 1982-04-08 | 1982-04-08 | Air cooler for fast breeder reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982049961U JPS58154498U (en) | 1982-04-08 | 1982-04-08 | Air cooler for fast breeder reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58154498U JPS58154498U (en) | 1983-10-15 |
| JPH0226079Y2 true JPH0226079Y2 (en) | 1990-07-17 |
Family
ID=30060776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982049961U Granted JPS58154498U (en) | 1982-04-08 | 1982-04-08 | Air cooler for fast breeder reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58154498U (en) |
-
1982
- 1982-04-08 JP JP1982049961U patent/JPS58154498U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58154498U (en) | 1983-10-15 |
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