JP2005306259A - Engine casing for ship - Google Patents

Engine casing for ship Download PDF

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Publication number
JP2005306259A
JP2005306259A JP2004127529A JP2004127529A JP2005306259A JP 2005306259 A JP2005306259 A JP 2005306259A JP 2004127529 A JP2004127529 A JP 2004127529A JP 2004127529 A JP2004127529 A JP 2004127529A JP 2005306259 A JP2005306259 A JP 2005306259A
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engine casing
engine
ship
boiler
turbulent flow
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JP4237666B2 (en
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Akihiko Masutani
明彦 舛谷
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Sumitomo Heavy Industries Marine and Engineering Co Ltd
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Sumitomo Heavy Industries Marine and Engineering Co Ltd
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Priority to JP2004127529A priority Critical patent/JP4237666B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To reduce the impact of a turbulent flow area caused by a bridge of a ship, obtain a low engine casing, and obtain the engine casing of a tanker which can bring a boiler near to a pump for cargo. <P>SOLUTION: A flat arrangement position of the engine casing for the ship is arranged in the front end position of living space on the center line in the captain direction or in a position displaced from side to side. Then the engine casing is arranged in a front low position of the turbulent flow area caused by the bridge, and at the height which it is opened at the upper part of the turbulent flow area. Then the boiler of the tanker is arranged forward of an engine space, and steam piping from the boiler to a turbine for driving the pump for the cargo is made shorter. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、船舶におけるエンジンケーシングに係るものであり、特に、エンジンケーシングのコストダウンを図るための配置に関するものである。   The present invention relates to an engine casing in a ship, and particularly relates to an arrangement for reducing the cost of the engine casing.

船舶においては、主機関の排気管(煙突)やボイラーなどの機器を覆い囲うため、上甲板上にエンジンケーシングを備えているが、通常、このケーシングは機関室の上方で、船橋、居住区の後方に配置されている。
ところが、船舶が航行するときには、船橋前面に当たった風が船橋上から後方にかけて乱流域を形成するので、エンジンケーシングは乱流域の影響を受けないように、乱流域より高い位置に開口するように形成されている。
Ships have an engine casing on the upper deck to cover equipment such as the exhaust pipe (chimney) and boiler of the main engine, but this casing is usually above the engine room, in the bridge, It is arranged at the rear.
However, when the ship navigates, the wind that hits the front of the bridge forms a turbulent flow area from the top of the bridge to the rear, so the engine casing should be opened higher than the turbulent flow area so that it is not affected by the turbulent flow area. Is formed.

つまり、エンジンケーシングは、主機関の排ガスが乱流域により乱され、煙害を起こさないように乱流域より高い層流域の高さまで形成される。高く形成されるエンジンケーシングは、それだけ多くの鋼板を使用することになるが、さらに、主機関運転時の共振を回避するために、多量の補強材あるいは重量材を投入する必要が生じる。   That is, the engine casing is formed up to the height of the laminar flow region higher than the turbulent flow region so that the exhaust gas of the main engine is disturbed by the turbulent flow region and smoke damage does not occur. The engine casing that is formed to be high uses a large number of steel plates, but it is also necessary to add a large amount of reinforcing material or heavy material in order to avoid resonance during operation of the main engine.

また、タンカーの場合は、荷役用のポンプを機関室の前方に設けている。該荷役用のポンプはエンジンケーシング内に覆い囲まれるように設置されたボイラーの蒸気を駆動源としているため、該ボイラーから荷役用のポンプタービンまでの蒸気配管が必要であるが、蒸気配管が長いと、圧力損失や機関室内への放熱などの無駄が生じることになる。   In the case of a tanker, a cargo handling pump is provided in front of the engine room. Since the pump for cargo handling uses the steam of a boiler installed so as to be enclosed in the engine casing as a driving source, a steam pipe from the boiler to the pump turbine for cargo handling is necessary, but the steam pipe is long. Then, waste of pressure loss and heat radiation to the engine room occurs.

従来、船橋の前面上端に、船橋全幅にわたって開口する吸気ダクトを備え、船橋前面に当たる風を吸気して発生する乱流域を低く抑え、煙突も低くする考えが提案されている(例えば、特許文献1参照)。
しかし、この特許文献1に示される構成では、煙突構造の他に吸気ダクトを備えるものであり、トータルのコストを低減できるものではない。
Conventionally, an idea has been proposed in which an intake duct that opens over the entire width of the bridge is provided at the upper front end of the bridge, and a turbulent flow region generated by sucking wind hitting the front of the bridge is suppressed to be low and a chimney is also reduced (for example, Patent Document 1). reference).
However, the configuration disclosed in Patent Document 1 includes an air intake duct in addition to the chimney structure, and cannot reduce the total cost.

また、煙害を防止する方法として、煙突の主機関排ガス管後方に排気放出ノズル群を設け、ノズル群で形成するエヤーカーテンにより、主機関排ガスを乱気流より上方へ放散させる考えも知られている(例えば、特許文献2参照)。
しかし、主機関排ガスを、乱流域を超える高さまでエヤーカーテンでガイドすることは極めて困難であり、現実的ではない。そして、そのようなノズル群を設備することはコストアップの要因になる。
Further, as a method for preventing smoke damage, there is also known an idea that an exhaust discharge nozzle group is provided behind the main engine exhaust pipe of the chimney, and the main engine exhaust gas is diffused upward from the turbulence by an air curtain formed by the nozzle group ( For example, see Patent Document 2).
However, it is extremely difficult to guide the main engine exhaust gas with the air curtain to a height exceeding the turbulent region, which is not practical. And installation of such a nozzle group becomes a factor of cost increase.

特公昭51−34199(第1頁、第1、2、3図)JP-B 51-34199 (1st page, Fig. 1, 2, 3) 特開昭60−171315(第1、2頁、第1、2、3図)JP-A-60-171315 (Pages 1, 2 and 1, 2 and 3)

本発明の目的とするところは、船舶において船橋により生ずる乱流域の影響を小さくし、低いエンジンケーシングを得ること、およびタンカーにおいてはボイラーを荷役用ポンプへ近接させ得るエンジンケーシングを得るところにある。   An object of the present invention is to reduce the influence of a turbulent flow region caused by a bridge in a ship, to obtain a low engine casing, and to obtain an engine casing capable of bringing a boiler close to a cargo handling pump in a tanker.

船舶において、エンジンケーシングを居住区の前端の位置に配置し、開口を船橋により生ずる乱流域の前方部分の低い位置で、乱流域の上方に開口する高さとし、ボイラーを機関室の前方位置に設置し、ボイラーから荷役用ポンプの駆動用タービンへの蒸気配管を短くした。また、エンジンケーシングの平面的な配置位置を船長方向中心線上に、もしくは、左右にずらしたことも特徴とする。   In a ship, the engine casing is located at the front end of the residential area, the opening is at a low position in the front part of the turbulent flow area created by the bridge, and the height is opened above the turbulent flow area, and the boiler is installed at the front position of the engine room The steam piping from the boiler to the turbine for driving the cargo handling pump was shortened. In addition, the planar arrangement position of the engine casing is shifted on the center line in the captain direction or left and right.

エンジンケーシングを居住区の前端の位置に配置するようにしたので、開口を船橋により生ずる乱流域の前方部分の低い位置で、乱流域の上方に開口させられるので、居住区の後方に配置される場合と比べてエンジンケーシングの高さを低く、軽量に形成できるようになった。また、タンカーにおいてはエンジンケーシングを前方に配置したことにより、ボイラーも機関室の前方位置に配置できるようになり、ボイラーから荷役用ポンプの駆動用タービンへの配管を短くでき、圧力損失や機関室内への放熱などの無駄を省くことができた。   Since the engine casing is arranged at the position of the front end of the residential area, the opening can be opened above the turbulent area at a low position in the front part of the turbulent area generated by the bridge, so it is arranged behind the residential area. Compared to the case, the height of the engine casing is low and it can be formed lighter. Also, in the tanker, the engine casing is arranged in the front, so that the boiler can be arranged in the front of the engine room, and the piping from the boiler to the driving turbine of the cargo handling pump can be shortened. It was possible to eliminate wasteful heat dissipation.

以下、図に沿って本発明の実施するための最良の形態について説明する。図1は本発明を実施した船舶の側面図、図2は同平面図、図3は図1のA−A線に沿った正断面図、図4は図1のB−B線に沿った正断面図、図5は上甲板面におけるエンジンケーシングの平断面図、図6は他の例を示す上甲板面におけるエンジンケーシングの平断面図、図7は図6のC−C線に沿った正断面図である。   Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. 1 is a side view of a ship embodying the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a front sectional view taken along line AA in FIG. 1, and FIG. 4 is taken along line BB in FIG. FIG. 5 is a plan sectional view of the engine casing on the upper deck surface, FIG. 6 is a plan sectional view of the engine casing on the upper deck surface showing another example, and FIG. 7 is taken along the line CC in FIG. It is a front sectional view.

図において1は船体であり、この例ではタンカーを示している。2はカーゴタンク、3はポンプ室、4は機関室である。ポンプ室3はカーゴタンク2の後方、機関室4の前方に配置されており、各カーゴタンク2のカーゴオイルを集中して荷役する荷役用のポンプ5が設置されている。
6は船体1の上甲板上に設けられた居住区であり、7は居住区6の最上階に設置された船橋である。
In the figure, reference numeral 1 denotes a hull, and in this example, a tanker is shown. 2 is a cargo tank, 3 is a pump room, and 4 is an engine room. The pump chamber 3 is arranged behind the cargo tank 2 and in front of the engine chamber 4, and a cargo handling pump 5 for carrying cargo oil concentrated in each cargo tank 2 is installed.
6 is a residential area provided on the upper deck of the hull 1, and 7 is a bridge installed on the top floor of the residential area 6.

さて、8は、機関室4の上方にあり、船体1の上甲板より上方に設置されたエンジンケーシングであって、居住区6の前端位置に配置されている。該ケーシング8は機関室4の上方まで配置されるボイラー9や主機関の排気管10を覆い囲んでいる。
図3、図4に示すごとく、該ケーシング8は船橋7の高さ位置において、船橋7からの視界を遮らないように上部は二又に分けられた構造になっている。
Now, 8 is an engine casing located above the engine room 4 and above the upper deck of the hull 1, and is disposed at the front end position of the living area 6. The casing 8 covers a boiler 9 disposed up to the upper side of the engine room 4 and an exhaust pipe 10 of the main engine.
As shown in FIGS. 3 and 4, the casing 8 is divided into two at the height of the bridge 7 so as not to obstruct the view from the bridge 7.

なお、11は荷役用のポンプ5の駆動用蒸気配管であって、ボイラー9から荷役用ポンプ5の駆動用タービンに連結されている。12は荷役用のカーゴオイル配管であって、船体1の上甲板上の所定位置から荷役用ポンプ5を介して各カーゴタンク2まで配管されている。   Reference numeral 11 denotes a steam pipe for driving the cargo handling pump 5, which is connected from the boiler 9 to the turbine for driving the cargo handling pump 5. A cargo oil pipe 12 for cargo handling is piped from a predetermined position on the upper deck of the hull 1 to each cargo tank 2 via a cargo handling pump 5.

13は、船舶が航行する際、船橋7の前面に当たる風が、船橋7の上面に流れ、船橋7の上面から後方にかけて形成される乱流域の境界を示している。この乱流域の境界面13は前方部分では低いが、後方に行くほど高くなる。
したがって、エンジンケーシング8を居住区6の前端位置に配置すると、エンジンケーシング8を乱流域上層の層流域に開口させるのに、後方に配置する場合と比較して低く形成できる。なお、図1において仮想線で示した8′は通常の場合のエンジンケーシングの位置、9′は同じくボイラーの位置を示している。
Reference numeral 13 denotes a boundary of a turbulent region formed when the ship sails, the wind hitting the front surface of the bridge 7 flows on the upper surface of the bridge 7 and is formed from the upper surface of the bridge 7 to the rear. The boundary surface 13 of this turbulent flow region is low at the front part, but becomes higher as going backward.
Therefore, when the engine casing 8 is arranged at the front end position of the residential area 6, the engine casing 8 can be formed lower than the case where the engine casing 8 is arranged rearward in order to open the engine casing 8 in the upper layer of the turbulent flow area. In FIG. 1, 8 'indicated by a virtual line indicates the position of the engine casing in a normal case, and 9' indicates the position of the boiler.

図6、図7は他の例を示すものであって、前記した例のエンジンケーシング8は、居住区6の前端で、船長方向中心線上に配置されているのに対し、この例のエンジンケーシング8は居住区6の前端で、船長方向中心線から左側または右側にずらして配置したものである。このように配置した場合、主機関の排気管10を曲折させてエンジンケーシング8に導く必要があるが、船橋7の視界を大きく確保できると云う効果が得られる。   6 and 7 show another example. The engine casing 8 of the above example is arranged on the center line in the ship length direction at the front end of the living area 6, whereas the engine casing of this example is shown in FIGS. Reference numeral 8 denotes a front end of the residential area 6, which is shifted to the left or right from the center line in the captain direction. When arranged in this way, it is necessary to bend the exhaust pipe 10 of the main engine and guide it to the engine casing 8, but it is possible to obtain an effect that a large field of view of the bridge 7 can be secured.

このように、本発明によるエンジンケーシングは居住区の前端位置に配置するようにしたので、船橋上の前方部分で乱流域の低い位置において、層流域に開口させられ、エンジンケーシングを低く形成することができるものである。
もちろん、居住区の前端とは最前端を意味するものではなく、前方部分であればよい。また、図示した態様に限定されるものではなく、形状などは適宜変更して実施することが可能である。
As described above, since the engine casing according to the present invention is arranged at the front end position of the residential area, the engine casing is formed low by being opened in the laminar flow area at the lower part of the turbulent flow area at the front portion on the bridge. It is something that can be done.
Of course, the front end of the residential area does not mean the front end, and may be a front portion. Moreover, it is not limited to the aspect shown in figure, A shape etc. can be changed suitably and can be implemented.

本発明を実施した船舶の側面図。The side view of the ship which implemented this invention. 同平面図。FIG. 図1のA−A線に沿った正断面図。FIG. 2 is a front sectional view taken along line AA in FIG. 1. 図1のB−B線に沿った正断面図。FIG. 3 is a front sectional view taken along line BB in FIG. 1. 上甲板面におけるエンジンケーシングの平断面図。The plane sectional view of the engine casing in the upper deck surface. 他の例を示す上甲板面におけるエンジンケーシングの平断面図。The plane sectional view of the engine casing in the upper deck surface which shows other examples. 図6のC−C線に沿った正断面図。FIG. 7 is a front sectional view taken along line CC in FIG. 6.

符号の説明Explanation of symbols

1 船体 2 カーゴタンク
3 荷役用ポンプ室 4 機関室
5 荷役用ポンプ 6 居住区
7 船橋 8 エンジンケーシング
9 ボイラー 10 主機関排気管
11 蒸気配管 12 カーゴオイル配管
13 乱流域境界面
DESCRIPTION OF SYMBOLS 1 Hull 2 Cargo tank 3 Cargo pump room 4 Engine room 5 Cargo pump 6 Residential area 7 Bridge 8 Engine casing 9 Boiler 10 Main engine exhaust pipe 11 Steam pipe 12 Cargo oil pipe 13 Turbulent flow area boundary surface

Claims (3)

エンジンケーシングを居住区の前端の位置に配置し、開口を船橋により生ずる乱流域の前方部分の低い位置で、乱流域の上方に開口する高さとしたことを特徴とする船舶におけるエンジンケーシング。   An engine casing in a ship, characterized in that the engine casing is disposed at the front end position of the residential area, and the opening is at a low position in the front part of the turbulent flow area generated by the bridge and opens above the turbulent flow area. 平面的な配置で、船長方向中心線より左または右側にずらせた位置に配置したことを特徴とする請求項1記載の船舶におけるエンジンケーシング。   2. The engine casing in a ship according to claim 1, wherein the engine casing is arranged in a planar arrangement at a position shifted to the left or right from the center line in the ship length direction. タンカーにおいて、ボイラーを機関室の前方位置に設置し、ボイラーから荷役用ポンプの駆動用タービンへの蒸気配管を短くしたことを特徴とする請求項1または請求項2記載の船舶におけるエンジンケーシング。
The engine casing for a ship according to claim 1 or 2, wherein the tanker is provided with a boiler at a position in front of the engine room, and the steam pipe from the boiler to the driving turbine of the cargo handling pump is shortened.
JP2004127529A 2004-04-23 2004-04-23 Engine casing in a ship Expired - Fee Related JP4237666B2 (en)

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JP4237666B2 JP4237666B2 (en) 2009-03-11

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
JP2013119368A (en) * 2011-12-09 2013-06-17 Tsuneishi Shipbuilding Co Ltd Air supply structure to engine room of ship
JP2017036002A (en) * 2015-08-11 2017-02-16 三井造船株式会社 Device arrangement structure of ship
JP6118880B1 (en) * 2015-11-11 2017-04-19 三井造船株式会社 Ship
KR20180037407A (en) * 2016-10-04 2018-04-12 현대중공업 주식회사 ship
WO2019123712A1 (en) * 2017-12-22 2019-06-27 三菱重工業株式会社 Desulfurization system for ships
JP2021109475A (en) * 2020-01-07 2021-08-02 住友重機械マリンエンジニアリング株式会社 Ship
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JP2013119368A (en) * 2011-12-09 2013-06-17 Tsuneishi Shipbuilding Co Ltd Air supply structure to engine room of ship
JP2017036002A (en) * 2015-08-11 2017-02-16 三井造船株式会社 Device arrangement structure of ship
CN108349570B (en) * 2015-11-11 2020-07-28 三井易艾斯造船有限公司 Ship with a detachable cover
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JP2017087992A (en) * 2015-11-11 2017-05-25 三井造船株式会社 Ship
CN108349570A (en) * 2015-11-11 2018-07-31 三井造船株式会社 Ship
KR20180037407A (en) * 2016-10-04 2018-04-12 현대중공업 주식회사 ship
KR102251101B1 (en) * 2016-10-04 2021-05-11 현대중공업 주식회사 ship
JP2019111932A (en) * 2017-12-22 2019-07-11 三菱重工業株式会社 Desulfurization system for vessel
KR20200051747A (en) * 2017-12-22 2020-05-13 미츠비시 쥬고교 가부시키가이샤 Ship desulfurization system
WO2019123712A1 (en) * 2017-12-22 2019-06-27 三菱重工業株式会社 Desulfurization system for ships
KR102424470B1 (en) 2017-12-22 2022-07-22 미쓰비시주코마린마시나리 가부시키가이샤 Desulfurization system for ships
JP7117100B2 (en) 2017-12-22 2022-08-12 三菱重工マリンマシナリ株式会社 Ship desulfurization system
JP2021109475A (en) * 2020-01-07 2021-08-02 住友重機械マリンエンジニアリング株式会社 Ship
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WO2022230752A1 (en) * 2021-04-28 2022-11-03 川崎重工業株式会社 Cargo ship

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