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JPH01210706A - Moisture separation heater - Google Patents

Moisture separation heater

Info

Publication number
JPH01210706A
JPH01210706AJP3514888AJP3514888AJPH01210706AJP H01210706 AJPH01210706 AJP H01210706AJP 3514888 AJP3514888 AJP 3514888AJP 3514888 AJP3514888 AJP 3514888AJP H01210706 AJPH01210706 AJP H01210706A
Authority
JP
Japan
Prior art keywords
drain
housing
moisture
steam
cycle steam
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
Application number
JP3514888A
Other languages
Japanese (ja)
Inventor
Koichi Yoshimura
浩一 吉村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba CorpfiledCriticalToshiba Corp
Priority to JP3514888ApriorityCriticalpatent/JPH01210706A/en
Publication of JPH01210706ApublicationCriticalpatent/JPH01210706A/en
Pendinglegal-statusCriticalCurrent

Links

Abstract

PURPOSE:To prevent the re-accompanying of drain and improve moisture separating efficiency, by a method wherein discharging pipes are provided from the lowest positions of a plurality of slanted bottom plates, provided at the bottom of a housing, through the housing to discharge the drain in steam, which is dropped naturally before flowing into a moisture separator. CONSTITUTION:A plurality of slanted bottom plates 9 is provided in a housing 1 at the lower peripheries of the inlet port 4 of cycle steam so that the lowest positions of the bottom plates 9 are at the inlet ports of shell drain discharging pipes 8. The curvature of the slanted bottom plates 9 at the periphery of the inlet port 4 of steam is formed so as to be along the stream line of the cycle steam. According to this constitution, drain in the cycle steam, which is dropped naturally before flowing into a moisture separator, flows along the inner wall of the housing 1, thereafter, arrives at the slanted bottom plates 9 and flows along the inclination of the bottom plate 9, then is discharged to the outside of a heater through the discharging pipes 8. Accordingly, the stagnation of the drain is eliminated and the phenomenon of accompanying the drain again will never be generated whereby separating efficiency may be improved.

Description

Translated fromJapanese

【発明の詳細な説明】〔発明の目的〕(産業上の利用分野)本発明は原子力発電プラントに設置される湿分分離加熱
器に関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a moisture separation heater installed in a nuclear power plant.

(従来の技術)原子力発電プラントでは高圧タービンから排出されたサ
イクル蒸気中に含まれるlO%程度の湿分を除去した後
、高圧タービン油気蒸気及び原子炉主蒸気により再熱し
て過熱蒸気として低圧タービンに供給する湿分分離加熱
器が設置されている。
(Prior art) In a nuclear power plant, after removing about 10% of moisture contained in cycle steam discharged from a high-pressure turbine, it is reheated by high-pressure turbine oil steam and reactor main steam to produce superheated steam at low pressure. A moisture separation heater is installed to feed the turbine.

まず、従来の湿分分離加熱器を第5図及び第6図を参照
して説明する。湿分分離加熱器は横向き円筒形状のハウ
ジング1の中に湿分分離器2と加熱器3a、 3bを内
蔵したものであり、加熱器3a、3bは高圧タービン油
気蒸気により再熱する第一段加熱器3aと、原子炉主蒸
気により再熱する第二段加熱器3bとから構成される。
First, a conventional moisture separating heater will be explained with reference to FIGS. 5 and 6. The moisture separation heater has a moisture separator 2 and heaters 3a, 3b built into a horizontally cylindrical housing 1. It consists of a stage heater 3a and a second stage heater 3b that reheats using reactor main steam.

また、湿分分離器2は2列に並んで配置(第6図参照)
されている、これらの構造は、中央面A−Aに対称の形
状となっている。
In addition, the moisture separators 2 are arranged in two rows (see Figure 6).
These structures are symmetrical about the central plane A-A.

サイクル蒸気は、サイクル蒸気入口4より流入し、器内
で2分された後湿分分離器2を通って。
Cycle steam enters from the cycle steam inlet 4, is divided into two parts in the vessel, and then passes through the moisture separator 2.

湿分が除去される。さらに、器内で合流した後。Moisture is removed. Furthermore, after merging in the vessel.

第一段加熱器3a及び第二段加熱器3bを通って再熱さ
れ、サイクル蒸気出口5より排出される。
The steam is reheated through the first stage heater 3a and the second stage heater 3b, and is discharged from the cycle steam outlet 5.

湿分分離器2より分離した湿分(ドレン)は。The moisture (drain) separated from the moisture separator 2.

湿分分離器2の下部に設けられたドレン流fm6を通っ
て、湿分分離ドレン排出管7より、器外に設置されてい
るドレンタンク(図示せず)に集められる。また、湿分
分離器2に流入する前に自然落下する湿分はハウジング
1の内壁を流れて後、シェルドレン排出管8に導かれて
ドレンタンクに集められる。
The water passes through a drain flow fm6 provided at the bottom of the moisture separator 2 and is collected from the moisture separation drain discharge pipe 7 into a drain tank (not shown) installed outside the device. Furthermore, moisture that naturally falls before flowing into the moisture separator 2 flows along the inner wall of the housing 1, and is then led to the shell drain discharge pipe 8 and collected in the drain tank.

(発明が解決しようとする課題)以上述べた湿分分離加熱器において、湿分分離器2に流
入する前に自然落下する湿分は、ハウジング1の内壁を
流れ、シェルドレン排出管8に導かれて排出されるが、
シェルドレン排出管8から遠い位置のハウジング1の下
部では第7図に示されるようにサイクル蒸気の流れが淀
んだ箇所を中心として大量のドレンが溜まってしまう、
この時、ハウジング1の下部に溜るドレンによりサイク
ル蒸気の流れる空+toが益々狭くなり、結果としてぜ
イクル蒸気の流速が速くなる。このため、局部的にドレ
ンがサイクル蒸気中に”再同伴され、湿□養゛分離器2
の湿分分離効率が低下するだけでなく、液滴によるエロ
ージョンによって内部構造物の損傷等が発生する懸念が
ある。
(Problems to be Solved by the Invention) In the moisture separation heater described above, the moisture that naturally falls before flowing into the moisture separator 2 flows on the inner wall of the housing 1 and is led to the shell drain discharge pipe 8. Although it is drained and expelled,
In the lower part of the housing 1 located far from the shell drain discharge pipe 8, a large amount of drain accumulates around the areas where the flow of cycle steam stagnates, as shown in FIG.
At this time, the drain accumulated in the lower part of the housing 1 narrows the space through which the cycle steam flows, and as a result, the flow rate of the diesel steam increases. Therefore, the condensate is locally re-entrained into the cycle steam, and the moisture/nurturing separator 2
There is a concern that not only the moisture separation efficiency of the liquid droplets will decrease, but also that internal structures may be damaged due to erosion caused by droplets.

そこで、本発明は湿分分離器に流入する前に自然落下す
るドレンがハウジングの下部に滞留させられることなく
、速やかに六つジングの外に排出されるようにした湿分
分離加熱器を提供することにある。
Therefore, the present invention provides a moisture separation heater in which the drain that naturally falls before flowing into the moisture separator is quickly discharged to the outside of the six-ring without being accumulated in the lower part of the housing. It's about doing.

〔発明の構成〕[Structure of the invention]

(711!題を解決するための手段)上記課題を解決するため本発明による湿分分離加熱器は
湿分分離器に流入する前に自然落下するサイクル蒸気中
のドレンをハウジング底部の決められた箇所に集中せし
める複数の傾斜底板を設け。
(Means for Solving Problem 711!) In order to solve the above-mentioned problems, the moisture separator heater according to the present invention drains the drain in the cycle steam that naturally falls before it flows into the moisture separator. Equipped with multiple slanted bottom plates to concentrate on specific areas.

この傾斜底板の最低位置からへヴソングを貫く・ように
シェルドレン排出管を設けたことを特徴とする。あるい
は湿分分離器に流入する前に自然落下するサイクル蒸気
中のドレンをハウジング底部の決められた箇所に集中せ
しめる複数の傾斜底板□を設け、この傾斜底板の最低位
置から水シール機構を介してハウジングを貫くように湿
分分離ドレン排出管を設けたことを特徴とする。
A feature is that a shell drain discharge pipe is provided so as to penetrate through the heaven song from the lowest position of this inclined bottom plate. Alternatively, a plurality of inclined bottom plates □ may be provided to concentrate the drain in the cycle steam that naturally falls to a predetermined location on the bottom of the housing before it flows into the moisture separator, and the drain is collected from the lowest position of the inclined bottom plate via a water seal mechanism. A feature is that a moisture separation drain discharge pipe is provided so as to penetrate through the housing.

(作用)上記技術的手段は次のように作用する。(effect)The above technical means works as follows.

湿分分離器に流入する前に自然落下するサイクル蒸気中
のドレンはハウジングの内壁を流れた後にハウジング下
部の傾斜底板に到達する。傾斜底板上のドレンは低いカ
ムと速やかに流れ、ハウジングを貫いて設けられるシェ
ルドレン排出管を介して器外に排出される。傾斜底板上
ではドレンが速やかに流れるため、ドレンの滞留は全く
起こらない。従って、サイクル蒸気が流動する場合のド
レンの再同伴現象は発生しない。
The condensate in the cycle steam that falls by gravity before entering the moisture separator flows along the inner wall of the housing before reaching the sloped bottom plate at the bottom of the housing. Drainage on the inclined bottom plate quickly flows through the lower cam and is discharged outside the vessel through a shell drain discharge pipe provided through the housing. Since drain flows quickly on the inclined bottom plate, no accumulation of drain occurs. Therefore, the re-entrainment phenomenon of condensate when cycle steam flows does not occur.

また、傾斜底板上のドレンは湿分分離器に流入する前の
雰囲気中にあるため、湿分分離器により分離されたドレ
ンが排出される湿分分離ドレン排出管側より圧力が高く
、双方め間に水シール機構を置くならば、圧力差以上に
溜まるドレンが湿分分離ドレン排出管側に□流出するこ
とになる。この滞留ドレンは傾斜底板最低位置であるた
め、サイクル蒸気の流れの影響を受は難く、サイクル酒
気中に再同伴されることはない。
In addition, since the drain on the inclined bottom plate is in the atmosphere before it flows into the moisture separator, the pressure is higher than the moisture separation drain discharge pipe side where the drain separated by the moisture separator is discharged. If a water seal mechanism is placed between them, the drain that accumulates above the pressure difference will flow out to the moisture separation drain discharge pipe side. Since this retention drain is located at the lowest position of the inclined bottom plate, it is hardly affected by the flow of cycle steam and is not re-entrained in the cycle steam.

(実施例)以下、添付図を参、照しうつ本発明の一実施例を説明す
る。
(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

゛第1図はハウジング1の下部のサイクル蒸気入口4を
中心としてその周辺部を示している。シェルドレン排出
管8の入口が傾斜底板9の最低位置になるようにある勾
配を有する傾斜底板9aが設けられている。また、サイ
クル蒸気入口4岡囲の傾斜底板9bは、サイクル蒸気の
流線に合うよう曲面が形成されている。これらの傾斜底
板9a、9bは第2図に示されるようにサイクル蒸気人
口4の内径寸法を上回る幅を持つように形成される。シ
ェルドレン排出管8の位置は、サイクル蒸気人口4近傍
に傾斜底板9の最高部を設定すれば任意に決めてよい。
1 shows the cycle steam inlet 4 at the bottom of the housing 1 and its surroundings. An inclined bottom plate 9a having a certain slope is provided so that the entrance of the shell drain discharge pipe 8 is at the lowest position of the inclined bottom plate 9. Further, the inclined bottom plate 9b surrounding the cycle steam inlet 4 is formed with a curved surface to match the streamlines of the cycle steam. These inclined bottom plates 9a, 9b are formed to have a width exceeding the inner diameter dimension of the cycle steam port 4, as shown in FIG. The position of the shell drain discharge pipe 8 may be arbitrarily determined as long as the highest part of the inclined bottom plate 9 is set near the cycle steam population 4.

上記構成において、湿分分離器2に流入する前に自然落
下するサイクル蒸気中のドレンはハウジング1の内壁を
流れた後に傾斜底板9上に到達する。傾斜底板上のドレ
ンは低い方へと速やかに流れ、シェルドレン排出管8を
通って器外に排出される。傾斜底板9上ではドレンの滞
留はなく、サイクル蒸気によるドレンの再同伴現象は起
こらない。゛また、サイクル蒸気入口4の周囲の傾斜底
板9は、サイクル蒸気の流線に合うような曲面となって
いるから、サイクル蒸気は滑らかに流れ、傾斜底板9上
のドレンの流れを乱すこともない。
In the above configuration, the drain in the cycle steam that naturally falls before flowing into the moisture separator 2 flows on the inner wall of the housing 1 and then reaches the inclined bottom plate 9. Drain on the inclined bottom plate quickly flows downward and is discharged outside the vessel through the shell drain discharge pipe 8. There is no accumulation of condensate on the inclined bottom plate 9, and no re-entrainment of condensate by cycle steam occurs.゛Also, since the sloped bottom plate 9 around the cycle steam inlet 4 has a curved surface that matches the streamlines of the cycle steam, the cycle steam flows smoothly and the flow of drain on the sloped bottom plate 9 is not disturbed. do not have.

第3図及び第4図は本発明の他の実施例を示している。3 and 4 show other embodiments of the invention.

本実施例は湿分分離ドレン排出管7に適用されるもので
、湿分分離ドレン排出管7と傾斜底板9との間に第3図
に示されるように湿分分離器2に流入前のサイクル蒸気
側の雰囲気との間を仕切るドレン仕切板10が設けられ
る。このドレン仕切板10の底部には第4図に示される
ように切欠き11が穿設されると共に、この切欠き11
と対峙して堰板12が備えられる。
This embodiment is applied to a moisture separation drain discharge pipe 7, and there is a gap between the moisture separation drain discharge pipe 7 and the inclined bottom plate 9, as shown in FIG. A drain partition plate 10 is provided to partition the cycle steam from the atmosphere. A notch 11 is bored in the bottom of the drain partition plate 10 as shown in FIG.
A weir plate 12 is provided facing the dam.

なお、傾斜底板9はサイクル蒸気入口4の近傍が最高で
ドレン仕切板10の近傍で最低となるよう傾斜させられ
る。また、サイクル蒸気人口4の周囲の傾斜底板9の形
状はサイクル蒸気の流線に合うよう曲面に形成される。
The inclined bottom plate 9 is inclined so that it is highest near the cycle steam inlet 4 and lowest near the drain partition plate 10. Further, the shape of the inclined bottom plate 9 around the cycle steam population 4 is formed into a curved surface so as to match the streamlines of the cycle steam.

上記の各構成に加えて、湿分分離器2により分離したド
レンが堰板12の内側に直接流入しないようドレン転向
板13が設けられている。上記構成において、傾斜底板
9の機能は前述のとおりであるが、本実施例はドレン仕
切板lO近傍で液面が形成され、圧力差以上に溜まるド
レンが排除される水シール機構を形成している点に特徴
を有する。傾斜底板9上のドレンは、湿分分離器2に流
入する前の雰囲気中にあたるため、湿分分離ドレン排出
管7側より圧力が高く、液面は傾斜底板9上の方が低い
ことになる。ところで、ここに溜まるドレンは傾斜底板
9の最低位置であり、サイクル蒸気人口4からは最も遠
い。このため、サイクル蒸気の流れの影響を受けること
は少なく、ドレンが再同伴されることはない。
In addition to the above configurations, a drain turning plate 13 is provided to prevent the drain separated by the moisture separator 2 from directly flowing into the inside of the weir plate 12. In the above configuration, the function of the inclined bottom plate 9 is as described above, but in this embodiment, a liquid level is formed near the drain partition plate lO, and a water seal mechanism is formed in which drain accumulated above the pressure difference is removed. It is characterized by its presence. Since the drain on the inclined bottom plate 9 is in the atmosphere before flowing into the moisture separator 2, the pressure is higher than that on the moisture separation drain discharge pipe 7 side, and the liquid level is lower on the inclined bottom plate 9. . By the way, the drain collected here is at the lowest position of the inclined bottom plate 9 and is farthest from the cycle steam population 4. Therefore, it is less affected by the flow of cycle steam, and condensate is not re-entrained.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明は湿分分離器に流入する前
に自然落下するサイクル蒸気中のドレンをハウジング底
部の決められた箇所に集中せしめるように複数の傾斜底
板を設け、この傾斜底板の最低位置からハウジングを貫
くようにシェルドレン排出管を設けているから、ハウジ
ング内をサイクル蒸気が流動する場合のドレンの再同伴
を防止することができ、湿分分離器の湿分分離効率を向
上させられるという優れた効果を奏する。
As explained above, the present invention provides a plurality of inclined bottom plates so as to concentrate the drain in the cycle steam that naturally falls at a predetermined location on the bottom of the housing before flowing into the moisture separator. A shell drain discharge pipe is provided to penetrate the housing from the lowest position, which prevents condensate from being re-entrained when cycle steam flows inside the housing, improving the moisture separation efficiency of the moisture separator. It has an excellent effect of being made to do.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明による湿分分離加熱器の要部を示す断面
図、第2図は第1図の■−■線に沿う断面図、第3図は
本発明の他の実施例を示す断面図、第4図は第3図のI
V −IV線に沿う断面図、第5図は従来の湿分分離加
熱器の縦断面図、第6図は第5図のVI−VI線に沿う
断面図、第7図は従来の湿分分離器におけろドレンの再
同伴現象を示す説明図である。1・・・ハウジング   2・・・湿分分離器3a、 
3b・・・加熱器   4・・・サイクル蒸気人口5・
・・サイクル蒸気出口  6・・・ドレン流路7・・・
湿分分離ドレン排出管8・・・シェルドレン排出管  9・・・傾斜底板10
・・・ドレン仕切板  12・・・堰板13・・・ドレ
ン転向板代理人 弁理士 則 近 憲 佑同  第子丸 健第  1  園第21!I第  3  図第 411第  6  図第  7  図
FIG. 1 is a sectional view showing the main parts of a moisture separating heater according to the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a sectional view showing another embodiment of the present invention. Cross-sectional view, Figure 4 is I of Figure 3.
A cross-sectional view taken along the line V-IV, FIG. 5 is a vertical cross-sectional view of a conventional moisture separating heater, FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5, and FIG. FIG. 3 is an explanatory diagram showing a re-entrainment phenomenon of drain in a separator. 1...Housing 2...Moisture separator 3a,
3b... Heater 4... Cycle steam population 5.
...Cycle steam outlet 6...Drain passage 7...
Moisture separation drain discharge pipe 8...Shell drain discharge pipe 9...Slanted bottom plate 10
...Drain partition plate 12...Weir plate 13...Drain conversion board agent Patent attorney Nori Chika Ken Yudo Daishimaru Kendai 1 Sonodai 21! I Figure 3 Figure 411 Figure 6 Figure 7

Claims (2)

Translated fromJapanese
【特許請求の範囲】[Claims](1)横向き円筒形状のハウジング内に湿分分離器を有
し、前記ハウジングの底部にはサイクル蒸気入口を設け
た湿分分離加熱器において、前記湿分分離器に流入する
前に自然落下するサイクル蒸気中のドレンを前記ハウジ
ング底部の決められた箇所に集中せしめる複数の傾斜底
板を設け、この傾斜底板の最低位置から該ハウジングを
貫くようにシェルドレン排出管を設けたことを特徴とす
る湿分分離加熱器。
(1) In a moisture separation heater that has a moisture separator in a horizontally cylindrical housing and has a cycle steam inlet at the bottom of the housing, the steam naturally falls before flowing into the moisture separator. The damper is characterized in that a plurality of inclined bottom plates are provided for concentrating drain in the cycle steam at a predetermined location on the bottom of the housing, and a shell drain discharge pipe is provided so as to penetrate the housing from the lowest position of the inclined bottom plates. Minute separation heater.
(2)横向き円筒形状のハウジング内に湿分分離器を有
し、前記ハウジングの底部にはサイクル蒸気入口を設け
た湿分分離加熱器において、前記湿分分離器に流入する
前に自然落下するサイクル蒸気中のドレンを前記ハウジ
ング底部の決められた箇所に集中せしめる複数の傾斜底
板を設け、この傾斜底板の最低位置から水シール機構を
介して該ハウジングを貫くように湿分分離ドレン排出管
を設けたことを特徴とする湿分分離加熱器。
(2) In a moisture separation heater that has a moisture separator in a horizontally cylindrical housing and has a cycle steam inlet at the bottom of the housing, the steam naturally falls before flowing into the moisture separator. A plurality of sloping bottom plates are provided to concentrate condensate in the cycle steam at a predetermined location on the bottom of the housing, and a moisture separation drain discharge pipe is provided to penetrate the housing from the lowest position of the sloping bottom plate via a water seal mechanism. A moisture separating heater characterized by being provided with a moisture separating heater.
JP3514888A1988-02-191988-02-19 Moisture separation heaterPendingJPH01210706A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP3514888AJPH01210706A (en)1988-02-191988-02-19 Moisture separation heater

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP3514888AJPH01210706A (en)1988-02-191988-02-19 Moisture separation heater

Publications (1)

Publication NumberPublication Date
JPH01210706Atrue JPH01210706A (en)1989-08-24

Family

ID=12433818

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP3514888APendingJPH01210706A (en)1988-02-191988-02-19 Moisture separation heater

Country Status (1)

CountryLink
JP (1)JPH01210706A (en)

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