JPH08210602A - Steam generator for heating sodium - Google Patents
Steam generator for heating sodiumInfo
- Publication number
- JPH08210602A JPH08210602A JP7016877A JP1687795A JPH08210602A JP H08210602 A JPH08210602 A JP H08210602A JP 7016877 A JP7016877 A JP 7016877A JP 1687795 A JP1687795 A JP 1687795A JP H08210602 A JPH08210602 A JP H08210602A
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- steam generator
- temperature
- sodium
- outlet side
- 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- Withdrawn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
-
- 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)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、スパイラルコイル型等
の伝熱管をもつナトリウム加熱用蒸気発生器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sodium heating steam generator having a heat transfer tube of spiral coil type or the like.
【0002】[0002]
【従来の技術】ナトリウム加熱用蒸気発生器は、図1に
示すように、ヘリカルコイル型伝熱管1が、シュラウド
2と内筒3に納められた上で円筒形の容器4に納められ
ている。下部鏡5には4〜6個の給水管板6が配置さ
れ、ヘリカルコイル型伝熱管1がこれに接続されてい
る。上部鏡7にも同様に蒸気出口管板8が配置され、ヘ
リカルコイル型伝熱管1の出口側と接続されていて、ヘ
リカルコイル型伝熱管1内を流れる水が高温のナトリウ
ムで加熱して蒸気となる。2. Description of the Related Art As shown in FIG. 1, a steam generator for heating sodium has a helical coil type heat transfer tube 1 housed in a shroud 2 and an inner cylinder 3 and then in a cylindrical container 4. . Four to six water supply tube plates 6 are arranged on the lower mirror 5, and the helical coil heat transfer tube 1 is connected thereto. Similarly, a steam outlet tube plate 8 is arranged on the upper mirror 7 and is connected to the outlet side of the helical coil heat transfer tube 1, and the water flowing in the helical coil heat transfer tube 1 is heated by high temperature sodium to generate steam. Becomes
【0003】胴側ナトリウム系では、ナトリウムが上部
胴9に設けられたナトリウム入口ノズル10から入り、
分配器11でスパイラルコイル型伝熱管1の上部に供給
され伝熱管部で熱交換を行い、下部鏡に設けられたナト
リウム出口ノズル12から出て行く構造となっており、
スパイラルコイル型伝熱管1の材質は、全てナトリウム
入口側温度に耐える耐熱合金の材質(例えば改良9Cr
−1Mo鋼等)を採用している。In the shell side sodium system, sodium enters from a sodium inlet nozzle 10 provided in the upper shell 9,
The structure is such that the distributor 11 supplies the heat to the upper part of the spiral coil type heat transfer tube 1 to perform heat exchange in the heat transfer tube part, and to exit from the sodium outlet nozzle 12 provided in the lower mirror,
The material of the spiral coil heat transfer tube 1 is made of a heat-resistant alloy that can withstand the temperature at the sodium inlet side (for example, improved 9Cr).
-1Mo steel etc.) is adopted.
【0004】[0004]
【発明が解決しようとする課題】高速増殖炉プラントの
蒸気発生器等のナトリウム加熱用蒸気発生器において
は、給水側と蒸気出口側の温度差が大きく、ナトリウム
入口側に配置される蒸気出口側の伝熱管の設計温度は例
えば 520℃と非常に高い。高温のナトリウム入口温度の
条件で管内の圧力から要求される強度を満足するために
は、管の板厚を増加させるか、または、高温強度の高い
高価な耐熱合金(例えば改良9Cr−1Mo鋼等)の使
用が必要となるが、管の板厚を増加させると伝熱性能が
低下するため、従来は管の材質をナトリウム入口温度で
十分な強度を有する耐熱合金としていた。In a sodium heating steam generator such as a steam generator of a fast breeder reactor plant, there is a large temperature difference between the feed water side and the steam outlet side, and the steam outlet side arranged at the sodium inlet side. The design temperature of the heat transfer tube is very high, for example 520 ℃. In order to satisfy the strength required from the pressure inside the pipe under the condition of high sodium inlet temperature, the plate thickness of the pipe should be increased or an expensive heat resistant alloy with high high temperature strength (for example, improved 9Cr-1Mo steel etc.) ) Is required, but the heat transfer performance deteriorates as the plate thickness of the tube increases. Therefore, conventionally, the material of the tube was a heat-resistant alloy having sufficient strength at the sodium inlet temperature.
【0005】しかし、管の材質を高温のナトリウム入
口, 温度での強度から耐熱合金とした場合、低温側では
不必要に高強度となり、このことが蒸気発生器の製作コ
ストを増加させていた。However, when the material of the tube is made of a heat-resistant alloy due to its strength at a high temperature sodium inlet and temperature, the strength becomes unnecessarily high on the low temperature side, which increases the manufacturing cost of the steam generator.
【0006】本発明は、以上の問題点を解決することが
できるナトリウム加熱用蒸気発生器を提供しようとする
ものである。The present invention is intended to provide a steam generator for heating sodium which can solve the above problems.
【0007】[0007]
【課題を解決するための手段】本発明は、高温度下で使
用されるナトリウム加熱用蒸気発生器において、高温の
蒸気出口側と低温の給水側に材質が相違する伝熱管を採
用した。According to the present invention, in a sodium heating steam generator used at a high temperature, heat transfer tubes having different materials are used for a high temperature steam outlet side and a low temperature water supply side.
【0008】[0008]
【作用】従来全て高耐熱条件に合致した伝熱管であった
のを、本発明では高温の蒸気出口側と低温の給水側に材
質が相違する伝熱管を採用したので、低温の給水側の伝
熱管の選択自由度が増し、かつ、コスタダウンを図るこ
とができる。According to the present invention, since the heat transfer tubes having the high heat resistance conditions are all different from each other, the heat transfer tubes having different materials are used for the high temperature steam outlet side and the low temperature water supply side. The degree of freedom in selecting the heat tube is increased, and the cost down can be achieved.
【0009】[0009]
【実施例】本発明の一実施例を以下に説明する。本実施
例は、前記の図1に示すナトリウム加熱用蒸気発生器に
おいて、ヘリカルコイル型伝熱管1の材質を途中から変
え、高温の蒸気出口側の高耐熱合金の範囲を最小範囲に
とどめ、液相側である低温の給水側の低温部分の材質を
一般仕様の伝熱管とする。EXAMPLE An example of the present invention will be described below. In this embodiment, in the sodium heating steam generator shown in FIG. 1, the material of the helical coil type heat transfer tube 1 is changed from the middle to keep the range of the high heat resistant alloy on the high temperature steam outlet side to the minimum range. The material of the low temperature part on the low temperature water supply side, which is the phase side, is the heat transfer tube of the general specification.
【0010】例えば、ナトリウム入口側に近い蒸気発生
器の運転時に高温となる蒸気出口側の部分の伝熱管には
高温での強度の高い改良9Cr−1Mo鋼を使用し、蒸
気発生器の運転時により低温の給水側の部分には安価な
2 1/4 Cr−1Mo鋼を使用する。For example, improved 9Cr-1Mo steel, which has high strength at high temperature, is used for the heat transfer tube on the steam outlet side where the temperature becomes high during operation of the steam generator near the sodium inlet side. Due to the low temperature, it is cheap
2 1/4 Cr-1Mo steel is used.
【0011】これによって、蒸気発生器の運転時にヘリ
カルコイル型伝熱管1は必要な強度が保持され、かつ、
コストダウンを図ることが可能になる。As a result, the helical coil heat transfer tube 1 retains the required strength when the steam generator is in operation, and
It is possible to reduce costs.
【0012】[0012]
【発明の効果】従来のナトリウム加熱用蒸発器では、全
ての伝熱管の材質を最も条件が厳しい高温の蒸気出口側
の仕様にしていたが、本発明では、伝熱管の低温の給水
側の部分の伝熱管に例えば安価な2 1/4 −1Mo鋼を使
用することで、高温に耐えることができる高価な材質の
ものを使用する範囲を最小範囲にとどめると共に各部分
の温度条件に合った最適の材質をもつ伝熱管を構成する
ことができる。従って、本発明によって合理的な設計と
コストダウンを図ることができる。In the conventional sodium heating evaporator, all the heat transfer tubes are made of materials for the high temperature steam outlet side, which has the most severe conditions. However, in the present invention, the heat transfer tubes are provided on the low temperature water supply side. For example, by using inexpensive 2 1/4 -1Mo steel for the heat transfer tube, the range of using an expensive material that can withstand high temperature is kept to the minimum range and the optimum temperature condition for each part A heat transfer tube having the material Therefore, rational design and cost reduction can be achieved by the present invention.
【図1】ヘリカルコイル型蒸気発生器の構造図である。FIG. 1 is a structural diagram of a helical coil steam generator.
1 ヘリカルコイル型伝熱管 2 シュラウド 3 内筒 4 容器 5 下部鏡 6 給水管板 7 上部鏡 8 蒸気出口管板 9 上部胴 10 ナトリウム入口ノズル 11 分配器 12 ナトリウム出口ノズル 1 Helical Coil Type Heat Transfer Tube 2 Shroud 3 Inner Tube 4 Container 5 Lower Mirror 6 Water Tube Plate 7 Upper Mirror 8 Steam Outlet Tube Plate 9 Upper Body 10 Sodium Inlet Nozzle 11 Distributor 12 Sodium Outlet Nozzle
Claims (1)
蒸気発生器において、高温の蒸気出口側と低温の給水側
に材質が相違する伝熱管を採用したことを特徴とするナ
トリウム加熱用蒸気発生器。1. A sodium heating steam generator for use in high temperatures, characterized in that heat transfer tubes made of different materials are used on a high temperature steam outlet side and a low temperature water supply side. vessel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7016877A JPH08210602A (en) | 1995-02-03 | 1995-02-03 | Steam generator for heating sodium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7016877A JPH08210602A (en) | 1995-02-03 | 1995-02-03 | Steam generator for heating sodium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08210602A true JPH08210602A (en) | 1996-08-20 |
Family
ID=11928423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7016877A Withdrawn JPH08210602A (en) | 1995-02-03 | 1995-02-03 | Steam generator for heating sodium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08210602A (en) |
-
1995
- 1995-02-03 JP JP7016877A patent/JPH08210602A/en not_active Withdrawn
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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: 20020507 |