JPS6373003A - Steam drum - Google Patents
Steam drumInfo
- Publication number
- JPS6373003A JPS6373003A JP21604686A JP21604686A JPS6373003A JP S6373003 A JPS6373003 A JP S6373003A JP 21604686 A JP21604686 A JP 21604686A JP 21604686 A JP21604686 A JP 21604686A JP S6373003 A JPS6373003 A JP S6373003A
- Authority
- JP
- Japan
- Prior art keywords
- water
- steam
- drum
- steam drum
- water supply
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 91
- 238000000926 separation method Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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、蒸気ドラム、殊にＬＮＧ焚ガメガスタービン
排ガスボイラ水系統に設けられる脱気器蒸気ドラムに関
する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a steam drum, in particular to a deaerator steam drum installed in an LNG-fired Mega Turbine exhaust gas boiler water system.
従来の技術
第３図はこのような脱気器蒸気ドラムが設けられている
ボイラ給水系統の一例を示し、ｌは脱気器、２は脱気器
蒸気ドラム、３は脱気器給水管、４は高圧給水ポンプ入
口給水管、５はストレーナ、６は高圧給水ポンプ、７は
再循環弁、８節炭器、９は節炭器再循環弁、１０は給水
調整弁、１１は高圧蒸気ドラムである。BACKGROUND ART FIG. 3 shows an example of a boiler water supply system in which such a deaerator steam drum is provided, where l is a deaerator, 2 is a deaerator steam drum, 3 is a deaerator water supply pipe, 4 is a high-pressure water pump inlet water supply pipe, 5 is a strainer, 6 is a high-pressure water pump, 7 is a recirculation valve, 8 is an economizer, 9 is an economizer recirculation valve, 10 is a water supply regulating valve, 11 is a high-pressure steam drum It is.
そして、図示していない蒸発器から送られてきた気水混
合体は脱気器蒸気ドラム２において蒸気と水とに分離さ
れ、そのドラム水が一対の給水取出し管台１２を通して
高圧給水ポンプ６系及び図示していない低圧給水ポンプ
系へそれぞれ送られるようになっている。The steam and water mixture sent from an evaporator (not shown) is separated into steam and water in the deaerator steam drum 2, and the drum water passes through a pair of water supply take-off nozzles 12 to a high-pressure water supply pump 6 system. and a low-pressure water supply pump system (not shown).
第４図は、前述した脱気器蒸気ドラム２の従来例を示す
。FIG. 4 shows a conventional example of the deaerator steam drum 2 mentioned above.
この図において、蒸気ドラム２は本体１３を包含し、こ
の蒸気ドラム本体の下方側には蒸発器（図示せず）から
の気水混合体１４を吸入する上昇管１５が連結されてい
る。ま１こ、蒸気ドラム本体１３の下面部には給水取出
し孔１６か形成されて、第１図に示した管台１２が設け
られ、一方上面邪には蒸気取出し孔１７が形成されて、
管台１８が設けられいてる。In this figure, the steam drum 2 includes a main body 13, and a riser pipe 15 is connected to the lower side of the main body of the steam drum for sucking a steam-water mixture 14 from an evaporator (not shown). Also, a water supply outlet hole 16 is formed in the lower surface of the steam drum main body 13, and a nozzle 12 shown in FIG. 1 is provided, while a steam outlet hole 17 is formed in the upper surface.
A nozzle stand 18 is provided.
そして、気水混合隔壁バッフル１９が、蒸気ドラム本体
１３の内部に上昇管１５の開口部を覆うようにして配置
されている。したがって、上昇管１５から流れてくる気
水混合体１４は、蒸気ドラム本体１３の内壁と隔壁バッ
フル１９との間を上昇し、バッフル上ｕ１９ａを越えて
蒸気室２０内に流れ込んで、水１４ａから蒸気１４ｂが
分離される。この分離された蒸気１４ｂはそれから上方
の取出し孔１７及び管台１８を通して蒸気系へ送られ、
−力水１４ａはドラム内の水２１中に落下し、それから
取出し孔１６及び管台１２を通して給水ポンプ系へ送ら
れる。A steam/water mixing partition baffle 19 is disposed inside the steam drum body 13 so as to cover the opening of the riser pipe 15. Therefore, the steam-water mixture 14 flowing from the riser pipe 15 rises between the inner wall of the steam drum main body 13 and the partition wall baffle 19, flows into the steam chamber 20 over the baffle top u19a, and flows from the water 14a. Steam 14b is separated. This separated steam 14b is then sent to the steam system through the upper outlet hole 17 and nozzle 18,
- The power water 14a falls into the water 21 in the drum and is then sent through the outlet hole 16 and the nozzle 12 to the water pump system.
発明が解決しようとする間ヱ点
以上述べた従来例は、しかし、次のような問題点があっ
た。Points to be Solved by the Invention The conventional example described above, however, has the following problems.
すなわち、気水分離のために脱気器蒸気ドラム本体１３
の内部に隔壁バッフル１９だけを設けているにすぎない
ので、気水混合体１４がこの隔壁バッフルをオーバフロ
ーして蒸気室２０に流れ込む際、気水分離が充分完了す
る前に気水混合のままドラム水２１中に持ち込まれ、こ
のため気泡がドラム水中に生じて、給水取出し孔１６を
通して給水ポンプへ持ち込まれ、この結果給水ポンプが
キャビテーション現象を生じ、安全な運転ができなくな
る不具合を生じていた。That is, the deaerator steam drum body 13 is used for steam and water separation.
Since only the partition wall baffle 19 is provided inside the partition wall, when the steam/water mixture 14 overflows the partition wall baffle and flows into the steam chamber 20, the steam/water mixture remains mixed before the steam/water separation is sufficiently completed. As a result, air bubbles were generated in the drum water and carried into the water supply pump through the water supply outlet hole 16, resulting in a cavitation phenomenon in the water supply pump, causing a problem that made it impossible to operate safely. .
問題点を解決するための手段
本発明は、このような従来の問題点を解決するために、
蒸気ドラム本体の下方側に気水混合体を吸入する上昇管
が連結し、前記蒸気ドラム本体の下面部に給水取出し孔
を有する蒸気ドラムにおいて、前記蒸気ドラム本体の内
部に前記上昇管の開口部を覆うように配置された気水混
合隔壁バッフルの上方部に多数の孔を有する気水分離部
材を設けるとともに、前記給水取出し孔上方のドラム水
中にＶ型状バッフルを設けたものである。Means for Solving the Problems In order to solve these conventional problems, the present invention provides the following:
A steam drum in which a riser pipe for sucking a steam-water mixture is connected to a lower side of the steam drum main body, and a water supply outlet hole is provided in a lower surface of the steam drum main body, and an opening of the riser pipe is provided inside the steam drum main body. A steam/water separation member having a large number of holes is provided above the air/water mixing partition baffle arranged to cover the water supply hole, and a V-shaped baffle is provided in the drum water above the water supply hole.
作用
このような手段によれば、多数の孔を有する気水分離部
材によって気水混合体の気水分離は一層促進されドラム
水中への気泡持ち込みは減少され、またたとえ気泡がド
ラム水中に持ち込まれてもＶ型状バッフルの存在によっ
て給水取出し孔へ持ち込まれることはない。According to such means, the separation of air and water in the air-water mixture is further promoted by the air-water separation member having a large number of holes, and the introduction of air bubbles into the drum water is reduced, and even if air bubbles are introduced into the drum water, However, due to the presence of the V-shaped baffle, water will not be brought into the water supply outlet hole.
実施例
以下第１〜２図を参照して本発明の好適な一実施例につ
いて詳述する。なお、第１図は第２図のＩ−Ｉ線断面で
あり、かつこれらの図において第３〜４図に示したもの
と同一の部分には゛同一の符号を付してその詳細な説明
は省略する。EXAMPLE A preferred embodiment of the present invention will be described in detail below with reference to FIGS. 1 and 2. In addition, FIG. 1 is a cross section taken along the line I-I in FIG. 2, and in these figures, the same parts as shown in FIGS. Omitted.
しかして、本発明によれば、脱気器蒸気ドラム２の本体
１３の内部？こ上昇ｆｆ１５の開口部を覆うように配置
されている気水混合隔壁バッフル１９の上方部好適には
その上縁１９ａよりやや低い位置に気水分離部材２２が
設けられている。この気水分離部材２２は、本実施例に
よれば、多数の孔２３を存する水平部分２２ａと孔を有
しない垂直部分２２ｂとを備えるＬ型状部材によりｔ７
４成され、水平部分２２ａは多孔板または金網等で作る
ことができる。According to the invention, therefore, the interior of the body 13 of the deaerator steam drum 2? A steam/water separating member 22 is provided above the steam/water mixing partition baffle 19, which is arranged to cover the opening of the rising ff15, preferably at a position slightly lower than its upper edge 19a. According to this embodiment, the steam/water separation member 22 is formed by an L-shaped member having a horizontal portion 22a having a large number of holes 23 and a vertical portion 22b having no holes.
The horizontal portion 22a can be made of a perforated plate, a wire mesh, or the like.
また、本発明によれば、脱気器蒸気ドラム２の本体１３
の下面部に形成されている給水取出し孔１６の上方にお
けるドラム水２１中好適にはドラム水面とドラム底面と
の略中間に両端部を上方にＶ型状に傾斜させたバッフル
２４を設けている。Also according to the invention, the main body 13 of the deaerator steam drum 2
A baffle 24 having both ends inclined upward in a V-shape is preferably provided in the drum water 21 above the water supply outlet hole 16 formed in the lower surface, approximately midway between the drum water surface and the drum bottom surface. .
次に、その作用について説明する。Next, its effect will be explained.
図示していない蒸発器からの上昇管１５を通して脱気器
蒸気ドラム２の本体１３内に流入した気水混合体１４は
この蒸気ドラム本体１３の内壁と気水混合隔壁バッフル
１９との間を上昇し、該隔壁バッフルの上縁１９ａを越
えて蒸気室２０内に流れ込む。A steam/water mixture 14 flowing into the main body 13 of the deaerator steam drum 2 through a rising pipe 15 from an evaporator (not shown) rises between the inner wall of the steam drum main body 13 and the steam/water mixing partition baffle 19. and flows into the steam chamber 20 over the upper edge 19a of the bulkhead baffle.
この際、本発明の如き気水分離部材２２が装備されてい
ない場合には、気水混合体１４が直接下方のドラム水２
１中に落下することから充分な気水分離がされないまま
、ドラム水中へ気泡を持ち込むことになる。しかし、本
発明においては、気水分離部材２２を隔壁バッフル１９
の上方部に設けているので、隔壁バッフル１９の上縁１
９ａを越えて流れ出る気水混合体１４は、一旦気水分離
部材２２の水平部分２２ａ上に落下し、それからこの水
平部分に形成しである多数の孔２３より徐々に糸状に流
れ落ちることにより、蒸気室２０において気水分離がお
こなわれる。At this time, if the steam/water separation member 22 as in the present invention is not installed, the steam/water mixture 14 is directly transferred to the drum water 2 below.
1, air bubbles are brought into the drum water without sufficient air/water separation. However, in the present invention, the air/water separation member 22 is replaced by the partition wall baffle 19.
Since it is provided in the upper part, the upper edge 1 of the partition wall baffle 19
The steam/water mixture 14 flowing out beyond 9a once falls onto the horizontal portion 22a of the steam/water separating member 22, and then gradually flows down in the form of threads through the many holes 23 formed in this horizontal portion, thereby becoming steam. Steam and water separation takes place in chamber 20.
これにより、気水分離効果は相当向上するが、これだけ
では完全には分離出来ず、若干は気泡がドラム水中に入
るか、上方の気水分離部材２２にて気水混合体１４の落
下速度がやや遅くなることによりドラム水２１中への気
泡持ち込み力も小さくなる。Although this considerably improves the steam/water separation effect, it is not possible to completely separate the water by itself, and some air bubbles may enter the drum water, or the falling speed of the steam/water mixture 14 at the upper steam/water separating member 22 may be reduced. By slowing down a little, the force of bringing air bubbles into the drum water 21 also becomes smaller.
そして、たとえドラム水２１中に気泡が持ち込まれても
、本発明によれば、給水取出し孔１６上方のドラム水２
１中に設置しているＶ型状バッフル２４により下方の給
水取出し孔１６への気泡持ち込みを防止する。Even if bubbles are brought into the drum water 21, according to the present invention, the drum water 2 above the water supply outlet hole 16
A V-shaped baffle 24 installed inside the tank 1 prevents air bubbles from being brought into the water supply outlet hole 16 below.
なお、ドラム水２１中の若干の水の流れによってこのＶ
型状バッフル２４を迂回し底面側に微量の気泡２５が持
ち込まれることもあるが、この場合、浮力により上方の
ドラム水面側へ上昇しようとした場合、該バッフルがも
し水平であ、ればこの上昇した気泡２５はこのバッフル
に付着して上昇が阻害されることから好ましくない。Note that due to the slight flow of water in the drum water 21, this V
A small amount of air bubbles 25 may bypass the molded baffle 24 and be brought to the bottom side, but in this case, if the baffle is horizontal, if the drum tries to rise to the upper water surface side due to buoyancy, this The rising air bubbles 25 adhere to this baffle and are inhibited from rising, which is not preferable.
しかるに、本発明によれば、バッフル２４の両端部を上
方にＶ型状に傾斜させているので、上昇した気泡２５は
このＶ型状バッフルの下面部に達すると、このＶ型状の
傾斜に沿って、両端部上方へ浮上することから、給水ポ
ンプ系への気泡の持ち込みは完全になくなる。However, according to the present invention, both ends of the baffle 24 are inclined upward in a V-shape, so that when the rising air bubbles 25 reach the lower surface of the V-shape baffle, they are tilted upward in the V-shape. Since both ends float upward along the line, air bubbles are completely prevented from being brought into the water supply pump system.
発明の効果
以上詳述したように、本発明によれば、蒸気ドラムにお
ける気水分離を向上さけることができるとともに、ドラ
ム水中への気泡の持ち込みを減少させ、またたとえ気泡
がドラム水中へ持ち込まれても給水ポンプ系へ持ち込ま
れるのをなくしているので、給水ポンプのキャビテーシ
ョンを防止し、よって安全な運転が可能となる。Effects of the Invention As detailed above, according to the present invention, it is possible to improve the separation of air and water in a steam drum, and also to reduce the introduction of air bubbles into the water of the drum. This prevents cavitation of the water pump from being carried into the water supply pump system, thereby enabling safe operation.
第１図及び第２図は本発明による蒸気ドラムの一例をし
めず断面図で、第１図は第２図のＩ−１線断面図、第３
図は本発明による蒸気ドラムが設置されるボイラ給水系
統の一例を示す図、第４図は従来の蒸気ドラムを示す、
第１図と同様な図である。
２・・蒸気ドラム、１３・・蒸気ドラム本体、１４・・
気水混合体、１５・・上昇管、１６・・給水取出し孔、
１７・・蒸気取出し孔、１９・・気水混合隔壁バッフル
、２１・・ドラム水、２２・・気水分離部材、２３・・
孔、２４・・Ｖ型状バッフル。
第１図
芙
万
晶
掟
収
２ ： 革コしドラム・ １
９ ： り、ノ１くシＺ弘イｒ［ぷＡ２八・／）ｌし１
７； 蕉］乱耳く出Ｌル1 and 2 are cross-sectional views of an example of a steam drum according to the present invention, and FIG. 1 is a cross-sectional view taken along line I-1 in FIG. 2, and FIG.
The figure shows an example of a boiler water supply system in which a steam drum according to the present invention is installed, and FIG. 4 shows a conventional steam drum.
FIG. 2 is a diagram similar to FIG. 1; 2...Steam drum, 13...Steam drum body, 14...
Air-water mixture, 15...rising pipe, 16...water supply hole,
17...Steam extraction hole, 19...Steam/water mixing partition wall baffle, 21...Drum water, 22...Steam/water separation member, 23...
Hole, 24...V-shaped baffle. Figure 1 Fumanshogishu 2: Leather drum 1
9: ri, no 1 kushi Z hiroir [puA28・/)lshi1
7; Shō] Ranmimikude Lru
Claims (1)
が連結し、前記蒸気ドラム本体の下面部に給水取出し孔
を有する蒸気ドラムにおいて、前記蒸気ドラム本体の内
部に前記上昇管の開口部を覆うように配置された気水混
合隔壁バッフルの上方部に多数の孔を有する気水分離部
材を設けるとともに、前記給水取出し孔上方のドラム水
中にＶ型状バッフルを設けたことを特徴とする蒸気ドラ
ム。A steam drum in which a riser pipe for sucking a steam-water mixture is connected to a lower side of the steam drum main body, and a water supply outlet hole is provided in a lower surface of the steam drum main body, and an opening of the riser pipe is provided inside the steam drum main body. A steam/water separation member having a large number of holes is provided above the air/water mixing partition baffle arranged to cover the water supply hole, and a V-shaped baffle is provided in the drum water above the water supply hole. steam drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21604686A JP2511000B2 (en) | 1986-09-16 | 1986-09-16 | Steam drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21604686A JP2511000B2 (en) | 1986-09-16 | 1986-09-16 | Steam drum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6373003A true JPS6373003A (en) | 1988-04-02 |
| JP2511000B2 JP2511000B2 (en) | 1996-06-26 |
Family
ID=16682429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21604686A Expired - Fee Related JP2511000B2 (en) | 1986-09-16 | 1986-09-16 | Steam drum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2511000B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102937859B1 (en) | 2020-07-13 | 2026-03-10 | 엘지전자 주식회사 | Air conditioner |
-
1986
- 1986-09-16 JP JP21604686A patent/JP2511000B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2511000B2 (en) | 1996-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |