JPS6383501A - Steam generator - Google Patents
Steam generatorInfo
- Publication number
- JPS6383501A JPS6383501A JP22815286A JP22815286A JPS6383501A JP S6383501 A JPS6383501 A JP S6383501A JP 22815286 A JP22815286 A JP 22815286A JP 22815286 A JP22815286 A JP 22815286A JP S6383501 A JPS6383501 A JP S6383501A
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- transfer medium
- melting point
- low melting
- point metal
- 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
- 238000002844 melting Methods 0.000 claims description 17
- 230000008018 melting Effects 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 230000007797 corrosion Effects 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group 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 9
- 229910052708 sodium Inorganic materials 0.000 description 9
- 239000011734 sodium Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000012535 impurity Substances 0.000 description 6
- 238000000746 purification Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000007872 degassing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Detergent Compositions (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、二次ナトリウム系削除型高速増値炉に係り、
二重管蒸気発生器（以下単に二重管ＳＧと云う、）の伝
熱媒体を常時循環精製することにより伝熱媒体の突沸を
防止して伝熱効率を向上させること、及び伝熱管の腐食
を抑制することに好適な熱媒体循環型二重管ＳＧに関す
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a secondary sodium-based deletion type fast value increment reactor,
To improve heat transfer efficiency by preventing bumping of the heat transfer medium by constantly circulating and refining the heat transfer medium of a double tube steam generator (hereinafter simply referred to as double tube SG), and to prevent corrosion of heat transfer tubes. The present invention relates to a heat medium circulation type double pipe SG suitable for suppressing heat transfer.
従来例を第２図に示した。これまでに提案されている二
重管ＳＧは、伝熱媒体として用いられるヘリウム、水銀
、すす、鉛（又はこれらの合金）などは密閉封入して用
いられている。このように密閉封止して用いた場合、伝
熱媒体が突沸を起すと伝熱管内圧力が上昇すること、及
び伝熱効率を著しく低下させる。又、伝熱媒体に低融点
金属を用いた場合、低融点金属中の不純物によって伝熱
管が腐食されるなどの問題が配慮されていなかった。A conventional example is shown in FIG. In the double tube SG that has been proposed so far, helium, mercury, soot, lead (or an alloy thereof) used as a heat transfer medium is hermetically sealed. If the heat transfer medium is used in a hermetically sealed state, the pressure inside the heat transfer tube will increase and the heat transfer efficiency will be significantly reduced if the heat transfer medium causes bumping. Further, when a low melting point metal is used as a heat transfer medium, problems such as corrosion of the heat transfer tube due to impurities in the low melting point metal have not been considered.
上記従来技術は、伝熱媒体として低融点金属を用いるも
のとした場合、これを密閉封入しであるため突沸した場
合、及び低融点金属中の不純物による伝熱管の腐食等に
ついて配慮しておらず、伝熱管の信頼性について問題が
あった。The above conventional technology does not take into consideration the possibility of bumping when a low melting point metal is used as a heat transfer medium and the heat transfer tubes being corroded due to impurities in the low melting point metal because it is hermetically sealed. There were problems with the reliability of the heat exchanger tubes.
本発明の目的は、上記の事柄に鑑み二重管ＳＧの伝熱媒
体部と膨張タンク、及び精製部を設けたループを形成し
て、低融点金属を循環ポンプを用いて循環することによ
り、突沸を防止して伝熱効率を向上させること、低融点
合金中の不純物を精製して伝熱管の腐食を抑制できるこ
と、又は万一伝熱管に水漏洩が発生した場合、ループに
設けである膨張タンクの自由液面上に水分計を設置する
ことにより水漏洩を速やかに検出できる伝熱媒体流動型
の二重管ＳＧを提供することにある。In view of the above, an object of the present invention is to form a loop including a heat transfer medium section of a double pipe SG, an expansion tank, and a purification section, and to circulate a low melting point metal using a circulation pump. To prevent bumping and improve heat transfer efficiency, to purify impurities in low melting point alloys to suppress corrosion of heat transfer tubes, and in the event of water leakage to heat transfer tubes, an expansion tank installed in the loop can be used. It is an object of the present invention to provide a heat transfer medium flow type double pipe SG that can quickly detect water leakage by installing a moisture meter on the free liquid surface of the SG.
上記目的は、二重管ＳＧの伝熱媒体として用いる低融点
金属を膨張タンク、及び精製部を設けたループを形成さ
せ循環ポンプを用いて常時循環する手段を備えることに
より、達成される。The above object is achieved by providing a means for constantly circulating a low melting point metal used as a heat transfer medium in the double pipe SG by forming a loop including an expansion tank and a purification section using a circulation pump.
ｍ−裏部を設けたことにより、（１）低融点金属の突沸
による伝熱効率の低下防止、（２）低融点金属中の不純
物により腐食の抑制、（３）圧力の調節、及びガス抜き
が容易なこと、及び（４）膨張タンクのガス層に水分検
出計を取付け、伝熱管の水漏洩を速みやかに検出するこ
となどができる。By providing the m-back, (1) prevention of reduction in heat transfer efficiency due to bumping of low melting point metals, (2) suppression of corrosion due to impurities in low melting point metals, and (3) adjustment of pressure and gas venting. (4) It is possible to quickly detect water leakage from heat transfer tubes by attaching a moisture detector to the gas layer of the expansion tank.
以下に本発明の実施例を第１図によって説明する。第１
図は、伝熱媒体流動循環方式の二重管ＳＧである。１は
蒸気発生器本体、２はナトリウム流入口管、３はナトリ
ウム流出口管、４は水供給口管、５は水蒸気出口管、６
は二重管伝熱管、７は循環系配管、８は循環ポンプ、９
は膨張タンク、１０は液面計、１１は水漏洩検出計、１
２は精製部、１３は伝熱媒体流体である。An embodiment of the present invention will be described below with reference to FIG. 1st
The figure shows a double pipe SG using a heat transfer medium flow circulation system. 1 is the steam generator main body, 2 is the sodium inlet pipe, 3 is the sodium outlet pipe, 4 is the water supply port pipe, 5 is the steam outlet pipe, 6
is a double heat exchanger tube, 7 is a circulation system piping, 8 is a circulation pump, 9
is an expansion tank, 10 is a liquid level gauge, 11 is a water leak detector, 1
2 is a refining section, and 13 is a heat transfer medium fluid.
二重管ＳＧにおいて、−次系ナトリウムはナトリウム人
口２より入り、各伝熱管と熱交換を行ない、ナトリウム
出口３より炉心部へと循環される。In the double pipe SG, secondary sodium enters from the sodium port 2, exchanges heat with each heat transfer tube, and is circulated to the reactor core from the sodium outlet 3.
−カニ重管ＳＧの水−蒸気系は、ＳＧ下部４より下部プ
レナムを通して各伝熱管に分配される。- The water-steam system of the crab heavy tube SG is distributed from the SG lower part 4 to each heat transfer tube through the lower plenum.
水はＳＧ上方部へ移動する際に、二重管伝熱媒体を通し
て加熱され、水蒸気となって上部プレナムより蒸気出口
５よりタービン系へ送られる。When the water moves to the upper part of the SG, it is heated through the double-pipe heat transfer medium, becomes steam, and is sent from the upper plenum to the turbine system through the steam outlet 5.
本構成において、伝熱管媒体として用いられる低融点金
属７は、循環ポンプ８で下部プレナムより各伝熱管に分
配−され、二重管伝熱管の外側を通り上部プレナムで集
合されて膨張タンク９を経て精製系１２において精製さ
れ再循環される。このように伝熱媒体を強制循環するこ
とで伝熱管部における突沸を防止する方式となっている
。万一突沸が起きた場合、膨張タンクに吸収でき、内圧
が異常に高くならないようになっている。In this configuration, the low melting point metal 7 used as the heat exchanger tube medium is distributed from the lower plenum to each heat exchanger tube by the circulation pump 8, passes through the outside of the double-pipe heat exchanger tube, is collected at the upper plenum, and is sent to the expansion tank 9. After that, it is purified in the purification system 12 and recycled. This forced circulation of the heat transfer medium prevents bumping in the heat transfer tube portion. If bumping occurs, it can be absorbed by the expansion tank, preventing the internal pressure from becoming abnormally high.
熱媒体低融点金属は、常時精製、循環されるため低融点
金属中の不純物による腐食を抑制できる。Since the heat medium low melting point metal is constantly purified and circulated, corrosion due to impurities in the low melting point metal can be suppressed.
その他、低融点金属中の不純物を精製除去するので突沸
の核となる物を除去できること、及び伝熱効率を向上さ
せることができる。又循環系に膨張タンクを設けたこと
により、系の圧力調節、ガス抜きが簡単にできること、
及び水漏洩検出系を取り付けて速みやかに伝熱管破損を
検出できるなどの効果がある。In addition, since impurities in the low melting point metal are purified and removed, substances that become the core of bumping can be removed, and heat transfer efficiency can be improved. In addition, by installing an expansion tank in the circulation system, the system pressure can be easily adjusted and gas removed.
Also, by installing a water leakage detection system, damage to the heat exchanger tubes can be quickly detected.
本発明によれば、二次ナトリウム系削除型高速増殖炉に
おいて、二重管ＳＧの伝熱媒体である低融点金属を精製
、循環する方式としたことで、（１）低融点金属の突沸
による伝熱効率の低下防止。According to the present invention, in a secondary sodium deletion type fast breeder reactor, by adopting a method of refining and circulating the low melting point metal that is the heat transfer medium of the double tube SG, (1) bumping of the low melting point metal Prevents loss of heat transfer efficiency.
（２）伝熱管の腐食抑制、（３）循環系に膨張タンクを
設けたことにより、系の圧力調節、ガス抜きが簡単にで
きること、及び伝熱管破損を速みやかに検出できるなど
の効果がある。(2) Suppressing corrosion of heat transfer tubes; (3) By installing an expansion tank in the circulation system, system pressure adjustment and degassing can be easily performed, and damage to heat transfer tubes can be quickly detected. be.
第１図は本発明の一実施例の伝熱媒体精製、循環型の二
重管ＳＧの断面図、第２図は従来の伝熱媒体封止型の二
重管ＳＧの断面図である。
１・・・蒸気発生器本体、２・・・ナトリウム流入口、
３・・・ナトリウム流出口、４・・・水供給口、５・・
・蒸気出口、６・・・二重管伝熱管、７・・・伝熱媒体
低融点金属、８・・・循環ポンプ、９・・・膨張タンク
、１０・・・液面計。
１１・・・水漏洩検出計、１２・・・精製部。FIG. 1 is a sectional view of a heat transfer medium purification and circulation type double pipe SG according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional heat transfer medium sealed type double pipe SG. 1...Steam generator main body, 2...Sodium inlet,
3...Sodium outflow port, 4...Water supply port, 5...
- Steam outlet, 6... double pipe heat transfer tube, 7... heat transfer medium low melting point metal, 8... circulation pump, 9... expansion tank, 10... liquid level gauge. 11... Water leak detector, 12... Purification section.
Claims (1)
を循環流動させることにより、伝熱媒体の突沸を防止し
て伝熱効率を向上させ、又循環流動する伝熱媒体を精製
して供給することにより、伝熱管の腐食を抑制できるこ
とを特徴とする蒸気発生器。1. In a double pipe steam generator, by circulating and flowing a heat transfer medium of a low melting point metal, bumping of the heat transfer medium is prevented and heat transfer efficiency is improved, and the circulating and flowing heat transfer medium is purified. A steam generator characterized in that corrosion of heat transfer tubes can be suppressed by supplying heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22815286A JPS6383501A (en) | 1986-09-29 | 1986-09-29 | Steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22815286A JPS6383501A (en) | 1986-09-29 | 1986-09-29 | Steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6383501A true JPS6383501A (en) | 1988-04-14 |
Family
ID=16872039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22815286A Pending JPS6383501A (en) | 1986-09-29 | 1986-09-29 | Steam generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6383501A (en) |
-
1986
- 1986-09-29 JP JP22815286A patent/JPS6383501A/en active Pending
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