JP2020131764A - Oil discharge mechanism and vessel provided with the same - Google Patents

Oil discharge mechanism and vessel provided with the same Download PDF

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JP2020131764A
JP2020131764A JP2019023846A JP2019023846A JP2020131764A JP 2020131764 A JP2020131764 A JP 2020131764A JP 2019023846 A JP2019023846 A JP 2019023846A JP 2019023846 A JP2019023846 A JP 2019023846A JP 2020131764 A JP2020131764 A JP 2020131764A
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oil
oil tank
sub
lubricating
ship
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JP7183067B2 (en
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聡司 藤井
Satoshi Fujii
聡司 藤井
隆 江原
Takashi Ebara
隆 江原
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Mitsubishi Heavy Industries Ltd
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Abstract

To provide an oil discharge mechanism capable of suppressing back flow of lubrication oil from a main oil tank to lubrication units provided in respective devices even when a vessel is inclined and a vessel provided with the same.SOLUTION: An oil discharge mechanism includes: a main oil tank 20 for conducting lubrication oil discharged from the lubrication unit 18 through an oil discharge pipe P1 connected to a lubrication unit 18 of devices 12, 14, 16 loaded on a vessel; and a sub oil tank 22 provided in the discharge oil pipe P1 between the lubrication unit 18 and the main oil tank 20 and having smaller capacity than the main oil tank 20.SELECTED DRAWING: Figure 1

Description

本発明は、排油機構およびそれを備えた船舶に関する。 The present invention relates to an oil draining mechanism and a ship provided with the mechanism.

例えば船舶に搭載された蒸気タービン、減速機、発電機などの機器には、潤滑油を要する軸受などの潤滑部が設けられている。 For example, equipment such as steam turbines, speed reducers, and generators mounted on ships are provided with lubricating parts such as bearings that require lubricating oil.

各機器の潤滑部から排出された潤滑油は、１つの油タンクに導かれて貯留される。特許文献１には、船舶に適用されるものではないが、複数のタービンの軸受から排出された潤滑油が１つの油タンクに集合されることが開示されている。 Lubricating oil discharged from the lubricating part of each device is guided to one oil tank and stored. Patent Document 1 discloses that lubricating oil discharged from bearings of a plurality of turbines is collected in one oil tank, although it is not applied to a ship.

特開２００１−３７０８号公報Japanese Unexamined Patent Publication No. 2001-3708

例えば、図３に示すように、機器が搭載された船舶に揺れが生じることで船舶が傾斜した場合、潤滑部１８０に設けられた排油口１８０Ａの設置位置が油タンク２００内の油面ＯＳよりも低い位置になることがある。この状態のとき、排油管Ｐ４を介して油タンク２００から潤滑部１８０に潤滑油が逆流する可能性がある。 For example, as shown in FIG. 3, when the ship is tilted due to shaking of the ship on which the equipment is mounted, the installation position of the oil drain port 180A provided in the lubrication unit 180 is the oil level OS in the oil tank 200. May be lower than. In this state, the lubricating oil may flow back from the oil tank 200 to the lubricating portion 180 via the oil drain pipe P4.

本発明はこのような事情に鑑みてなされたものであって、船舶が傾斜した場合でも、メイン油タンクから各機器に設けられた潤滑部まで潤滑油が逆流することを抑制できる排油機構およびそれを備えた船舶を提供することを目的とする。 The present invention has been made in view of such circumstances, and an oil draining mechanism capable of suppressing backflow of lubricating oil from the main oil tank to the lubricating portion provided in each device even when the ship is tilted. The purpose is to provide a vessel equipped with it.

上記課題を解決するために、本発明の排油機構およびそれを備えた船舶は以下の手段を採用する。
すなわち、本発明の一態様に係る排油機構は、船舶に搭載された機器の潤滑部に接続された排油管を通じて、該潤滑部から排出された潤滑油が導かれるメイン油タンクと、前記潤滑部と前記メイン油タンクとの間の前記排油管に設けられ、該メイン油タンクよりも小容量とされたサブ油タンクと、を備えている。 In order to solve the above problems, the oil draining mechanism of the present invention and the ship equipped with the mechanism adopt the following means.
That is, the oil draining mechanism according to one aspect of the present invention includes a main oil tank in which the lubricating oil discharged from the lubricating portion is guided through an oil draining pipe connected to the lubricating portion of the equipment mounted on the ship, and the lubrication. It is provided with a sub oil tank provided in the oil drain pipe between the portion and the main oil tank and having a capacity smaller than that of the main oil tank.

本態様に係る排油機構において、潤滑部とメイン油タンクとを接続する排油管にはサブ油タンクが設けられている。また、サブ油タンクは、メイン油タンクよりも小容量とされている。これによれば、揺れ（例えばローリングやピッチング）によって船舶が傾斜することでメイン油タンク内の油面よりも潤滑部が低くなり、メイン油タンクに貯留された潤滑油が排油管を通じてメイン油タンクから逆流した場合でも、その逆流した潤滑油をサブ油タンクで貯留できる。このため、メイン油タンクから逆流した潤滑油はサブ油タンク内に留まるので、メイン油タンクから潤滑部へ潤滑油が逆流することを抑制できる。
なお、潤滑部としては、例えば船舶に搭載された発電機、タービン、減速機等が備える軸受等がある。 In the oil draining mechanism according to this aspect, a sub oil tank is provided in the oil draining pipe connecting the lubrication unit and the main oil tank. The sub oil tank has a smaller capacity than the main oil tank. According to this, the lubrication part becomes lower than the oil level in the main oil tank due to the inclination of the ship due to shaking (for example, rolling or pitching), and the lubricating oil stored in the main oil tank flows through the oil drain pipe to the main oil tank. Even if the backflow occurs, the backflowing lubricating oil can be stored in the sub oil tank. Therefore, the lubricating oil flowing back from the main oil tank stays in the sub oil tank, so that the backflow of the lubricating oil from the main oil tank to the lubricating portion can be suppressed.
The lubrication unit includes, for example, bearings provided in a generator, a turbine, a speed reducer, etc. mounted on a ship.

また、本発明の一態様に係る排油機構において、前記サブ油タンクは、水平状態における前記船舶の高さ方向において、前記潤滑部よりも低い位置、かつ、前記メイン油タンク内の基準油面よりも高い位置に配置されている。 Further, in the oil draining mechanism according to one aspect of the present invention, the sub oil tank is located at a position lower than the lubricated portion in the height direction of the ship in a horizontal state, and the reference oil level in the main oil tank. It is located higher than.

本態様に係る排油機構によれば、例えば船舶が水平状態のとき、潤滑部から排出された潤滑油は排油管を通じてサブ油タンクに導かれ、また、サブ油タンク内の潤滑油は排油管を通じてメイン油タンクに導かれる。このため、船舶が水平状態のとき、潤滑油がメイン油タンクからサブ油タンクへ逆流することがなく、また、潤滑部から排出された潤滑油を円滑にサブ油タンクに導くことができる。 According to the oil draining mechanism according to this aspect, for example, when the ship is in a horizontal state, the lubricating oil discharged from the lubricating portion is guided to the sub oil tank through the drain pipe, and the lubricating oil in the sub oil tank is drained pipe. It is guided to the main oil tank through. Therefore, when the ship is in a horizontal state, the lubricating oil does not flow back from the main oil tank to the sub oil tank, and the lubricating oil discharged from the lubricating portion can be smoothly guided to the sub oil tank.

また、本発明の一態様に係る排油機構において、前記サブ油タンクは、前記船舶の幅方向または長さ方向において、前記メイン油タンクから離間した位置に配置されている。 Further, in the oil draining mechanism according to one aspect of the present invention, the sub oil tank is arranged at a position separated from the main oil tank in the width direction or the length direction of the ship.

本態様に係る排油機構によれば、揺れによって船舶が傾斜したときにメイン油タンク内の油面よりも潤滑部が低くなりやすい位置にサブ油タンクを設置できる。一方、メイン油タンクに近接した位置においては、メイン油タンク内の油面よりも潤滑部が低くなり難く、メイン油タンクから潤滑部に潤滑油が逆流することがない。つまり、その位置においてはダブ油タンクを設置しなくてもよい。このため、逆流を抑制するためのサブ油タンクの数を必要最低限に抑えることができる。これにより、サブ油タンクの設置による重量の増加やコストの増加を抑えることができる。 According to the oil draining mechanism according to this aspect, the sub oil tank can be installed at a position where the lubricated portion tends to be lower than the oil level in the main oil tank when the ship is tilted due to shaking. On the other hand, at a position close to the main oil tank, the lubricating portion is unlikely to be lower than the oil level in the main oil tank, and the lubricating oil does not flow back from the main oil tank to the lubricating portion. That is, it is not necessary to install a dub oil tank at that position. Therefore, the number of sub oil tanks for suppressing backflow can be suppressed to the minimum necessary. As a result, it is possible to suppress an increase in weight and an increase in cost due to the installation of the sub oil tank.

また、本発明の一態様に係る排油機構において、前記サブ油タンクの容量は、前記船舶が揺れたときの傾斜角度および前記船舶の揺れ周期から得られる、一周期あたりに前記メイン油タンクから前記サブ油タンクへ逆流する前記潤滑油の量と、前記一周期あたりに前記潤滑部から前記サブ油タンクへ導かれる前記潤滑油の量との合計量を貯留できる容量とされている。 Further, in the oil draining mechanism according to one aspect of the present invention, the capacity of the sub oil tank is obtained from the tilt angle when the ship sways and the sway cycle of the ship, and is obtained from the main oil tank per cycle. The capacity is such that the total amount of the amount of the lubricating oil flowing back into the sub oil tank and the amount of the lubricating oil guided from the lubricating portion to the sub oil tank per cycle can be stored.

本態様に係る排油機構によれば、サブ油タンクの容量を、少なくとも、揺れの一周期あたりにサブ油タンクに流入する潤滑油の合計量を貯留できる容量とすることで、サブ油タンクのサイズを必要最小限に抑えることができる。
なお、船舶の揺れの傾斜角度や周期は、船舶の形状や重量などの設計仕様に基づいて予め算出できる。 According to the oil draining mechanism according to this aspect, the capacity of the sub oil tank is set to a capacity capable of storing at least the total amount of lubricating oil flowing into the sub oil tank per cycle of shaking. The size can be kept to the minimum necessary.
The tilt angle and period of the sway of the ship can be calculated in advance based on the design specifications such as the shape and weight of the ship.

また、本発明の一態様に係る船舶は、上記に記載の排油機構を備えている。 Further, the ship according to one aspect of the present invention is provided with the oil draining mechanism described above.

本発明に係る排油機構およびそれを備えた船舶によれば、船舶が傾斜した場合でも、メイン油タンクから各機器に設けられた潤滑部まで潤滑油が逆流することを抑制できる。 According to the oil draining mechanism according to the present invention and the ship provided with the mechanism, it is possible to prevent the lubricating oil from flowing back from the main oil tank to the lubricating portion provided in each device even when the ship is tilted.

本発明の一実施形態に係る排油機構の概略構成図である。It is a schematic block diagram of the oil draining mechanism which concerns on one Embodiment of this invention. 図１に示す排油機構が傾斜した状態の概略構成図である。It is a schematic block diagram of the state in which the oil draining mechanism shown in FIG. 1 is inclined. サブ油タンクを備えていない排油機構が傾斜した状態の概略構成図である。It is a schematic block diagram of the state where the oil draining mechanism which does not have a sub oil tank is inclined.

以下に、本発明の一実施形態に係る排油機構１について図１および図２を用いて説明する。 The oil draining mechanism 1 according to the embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

図１に示すように、排油機構１は、船舶に必要な機器（例えばタービン１２、減速機１４、発電機１６等）が設置された台板１０の内部に収容されたメイン油タンク２０と、そのメイン油タンク２０よりも小容量とされたサブ油タンク２２とを備えている。 As shown in FIG. 1, the oil draining mechanism 1 includes a main oil tank 20 housed inside a base plate 10 on which equipment necessary for a ship (for example, a turbine 12, a speed reducer 14, a generator 16, etc.) is installed. , A sub oil tank 22 having a capacity smaller than that of the main oil tank 20 is provided.

台板１０の上方には、図１の左側からタービン１２、減速機１４、発電機１６が配列され、各機器はそれぞれロータによって接続されている。このとき、減速機１４は、配列方向（図１の左右方向）において、台板１０の略中央に配置されている。この中央部分は、船舶の揺れ（例えばローリングやピッチング）の略中心とされる。 A turbine 12, a speed reducer 14, and a generator 16 are arranged above the base plate 10 from the left side of FIG. 1, and each device is connected by a rotor. At this time, the speed reducer 14 is arranged substantially in the center of the base plate 10 in the arrangement direction (left-right direction in FIG. 1). This central part is regarded as the approximate center of the sway of the ship (for example, rolling and pitching).

なお、タービン１２、減速機１４、発電機１６の配列方向は、各機器が搭載されている船舶の幅方向に一致していてもよいし、船舶の長さ方向に一致していてもよい。 The arrangement directions of the turbine 12, the speed reducer 14, and the generator 16 may be aligned with the width direction of the ship on which each device is mounted, or may be aligned with the length direction of the ship.

台板１０の左端側に配置されたタービン１２には、ロータを回転自在に支持するための軸受部１８（潤滑部）が設けられている。
この軸受部１８には、図示しない装置から潤滑油が供給されている。潤滑に供給された潤滑油は、軸受部１８の下端に設けられた排油口１８Ａから排出される。
また、台板１０の右端側に配置された発電機１６には、回転子に接続されたロータを回転自在に支持するための軸受部１８（潤滑部）が設けられている。この軸受部１８には、図示しない装置から潤滑油が供給されている。潤滑に供給された潤滑油は、軸受部１８の下端に設けられた排油口１８Ａから排出される。 The turbine 12 arranged on the left end side of the base plate 10 is provided with a bearing portion 18 (lubrication portion) for rotatably supporting the rotor.
Lubricating oil is supplied to the bearing portion 18 from a device (not shown). The lubricating oil supplied for lubrication is discharged from the oil drain port 18A provided at the lower end of the bearing portion 18.
Further, the generator 16 arranged on the right end side of the base plate 10 is provided with a bearing portion 18 (lubrication portion) for rotatably supporting the rotor connected to the rotor. Lubricating oil is supplied to the bearing portion 18 from a device (not shown). The lubricating oil supplied for lubrication is discharged from the oil drain port 18A provided at the lower end of the bearing portion 18.

メイン油タンク２０は、減速機１４の下方に位置する台板１０の内部に配置されている。 The main oil tank 20 is arranged inside a base plate 10 located below the speed reducer 14.

サブ油タンク２２は、図１のように船舶が水平な状態において、タービン１２や発電機１６等の機器に設けられた軸受部１８（詳細には排油口１８Ａ）よりも低い位置、かつ、メイン油タンク２０内の油面ＯＳよりも高い位置に配置されている。
なお、ここで言う「メイン油タンク２０内の油面ＯＳ」とは、例えば設計上の基準とされる油面（基準油面）の高さを意味する。 The sub oil tank 22 is located at a position lower than the bearing portion 18 (specifically, the oil drain port 18A) provided in the equipment such as the turbine 12 and the generator 16 when the ship is horizontal as shown in FIG. It is arranged at a position higher than the oil level OS in the main oil tank 20.
The "oil level OS in the main oil tank 20" referred to here means, for example, the height of the oil level (reference oil level) that is used as a design reference.

更に、サブ油タンク２２は、機器の配列方向においてメイン油タンク２０から離れた位置に設けられた２つの軸受部１８の下方にそれぞれ配置されている。
具体的には、サブ油タンク２２は、タービン１２の左端の軸受部１８の下方と、発電機１６の右端の軸受部１８の下方とに独立して配置されている。 Further, the sub oil tank 22 is arranged below the two bearing portions 18 provided at positions separated from the main oil tank 20 in the arrangement direction of the equipment.
Specifically, the sub oil tank 22 is independently arranged below the bearing portion 18 at the left end of the turbine 12 and below the bearing portion 18 at the right end of the generator 16.

また、サブ油タンク２２は、排油口１８Ａとメイン油タンク２０とを接続する排油管Ｐ１に設けられている。排油管Ｐ１は、サブ油タンク２２に対して上流側（軸受部１８側）の潤滑部側排油管Ｐ１Ａと、下流側（メイン油タンク２０側）のタンク側排油管Ｐ１Ｂとに分けられる。 Further, the sub oil tank 22 is provided in the oil drain pipe P1 connecting the oil drain port 18A and the main oil tank 20. The oil drain pipe P1 is divided into a lubrication portion side oil drain pipe P1A on the upstream side (bearing portion 18 side) and a tank side oil drain pipe P1B on the downstream side (main oil tank 20 side) with respect to the sub oil tank 22.

潤滑部側排油管Ｐ１Ａは、排油口１８Ａから下方に向かって延出して、サブ油タンク２２の上部に接続されている。 The oil drain pipe P1A on the lubrication portion side extends downward from the oil drain port 18A and is connected to the upper part of the sub oil tank 22.

タンク側排油管Ｐ１Ｂは、サブ油タンク２２の下部から台板１０の中央に向かって下方に傾斜するように延出して、メイン油タンク２０の上側部に接続されている。 The tank-side oil drain pipe P1B extends from the lower part of the sub oil tank 22 toward the center of the base plate 10 so as to incline downward, and is connected to the upper portion of the main oil tank 20.

なお、上記２つの軸受部１８を除いた他の軸受部１８（図１で示す内側２つの軸受部１８）および減速機１４に設けられている排油口は、それぞれ排油管Ｐ２、排油管Ｐ３を介してサブ油タンク２２を経由することなくメイン油タンク２０に接続されている。 The oil drainage ports provided in the other bearing portions 18 (two inner bearing portions 18 shown in FIG. 1) and the speed reducer 14 excluding the above two bearing portions 18 are the oil drain pipe P2 and the oil drain pipe P3, respectively. It is connected to the main oil tank 20 without passing through the sub oil tank 22.

次に、排油機構１の作動について説明する。
船舶は、ローリングやピッチングなどによって周期的に揺動することがある。その揺動の中心は、船舶の仕様や搭載する機器の配置によって異なるが、例えば重量が大きい部分とされ、図２に示すように、メイン油タンク２０が配置された位置近傍とされることがある。 Next, the operation of the oil draining mechanism 1 will be described.
The ship may swing periodically due to rolling or pitching. The center of the swing varies depending on the specifications of the ship and the arrangement of the equipment to be mounted, but for example, it may be a heavy part, and as shown in FIG. 2, it may be near the position where the main oil tank 20 is arranged. is there.

図２のように傾斜した状態では、メイン油タンク２０内の潤滑油の油面ＯＳよりもタービン１２の左側の軸受部１８に設けられた排油口１８Ａの位置が低くなる。 In the inclined state as shown in FIG. 2, the position of the oil drain port 18A provided in the bearing portion 18 on the left side of the turbine 12 is lower than the oil level OS of the lubricating oil in the main oil tank 20.

このような状態になると、メイン油タンク２０内の潤滑油はタンク側排油管Ｐ１Ｂを介してサブ油タンク２２へ流入する。 In such a state, the lubricating oil in the main oil tank 20 flows into the sub oil tank 22 via the tank side oil drain pipe P1B.

サブ油タンク２２の容積は、メイン油タンク２０の容量よりも小容量とされており、具体的には、次のような容量とされている。すなわち、船舶が揺れたときの傾斜角度および船舶の揺れ周期から得られる、一周期あたりにタンク側排油管Ｐ１Ｂを介してメイン油タンク２０からサブ油タンク２２へ逆流する潤滑油の量と、一周期あたりに軸受部１８からサブ油タンク２２へ潤滑部側排油管Ｐ１Ａを介して導かれる潤滑油の量との合計量を貯留できる容量とされている。少なくともこの容量を確保しておくことで、一周期あたりにサブ油タンク２２へ流入するすべての潤滑油をサブ油タンク２２に一時的に貯留できる。一時的にサブ油タンク２２に貯留された潤滑油は、船舶が反対に傾斜したときに、サブ油タンク２２からメイン油タンク２０に導かれる。 The volume of the sub oil tank 22 is smaller than the capacity of the main oil tank 20, and specifically, the volume is as follows. That is, the amount of lubricating oil that flows back from the main oil tank 20 to the sub oil tank 22 via the tank-side oil drain pipe P1B per cycle, which is obtained from the inclination angle when the ship sways and the sway cycle of the ship, and one The capacity is such that the total amount of the lubricating oil guided from the bearing portion 18 to the sub oil tank 22 via the oil drain pipe P1A on the lubricating portion side can be stored per cycle. By securing at least this capacity, all the lubricating oil flowing into the sub oil tank 22 per cycle can be temporarily stored in the sub oil tank 22. The lubricating oil temporarily stored in the sub oil tank 22 is guided from the sub oil tank 22 to the main oil tank 20 when the ship tilts in the opposite direction.

なお、船舶の揺れの傾斜角度や周期は、船舶の形状や重量などの設計仕様に基づいて予め算出できる。 The tilt angle and period of the sway of the ship can be calculated in advance based on the design specifications such as the shape and weight of the ship.

本実施形態に係る排油機構１においては、以下の効果を奏する。
軸受部１８とメイン油タンク２０とを接続する排油管Ｐ１にはサブ油タンク２２が設けられている。また、サブ油タンク２２は、メイン油タンク２０よりも小容量とされている。これによれば、揺れ（例えばローリングやピッチング）によって船舶が傾斜することでメイン油タンク２０内の油面よりも軸受部１８が低くなり、メイン油タンク２０に貯留された潤滑油が排油管Ｐ１を通じてメイン油タンク２０から逆流した場合でも、その逆流した潤滑油をサブ油タンク２２で貯留できる。このためメイン油タンク２０から逆流した潤滑油はサブ油タンク２２内に留まるので、メイン油タンク２０から軸受部１８へ潤滑油が逆流することを抑制できる。 The oil draining mechanism 1 according to the present embodiment has the following effects.
A sub oil tank 22 is provided in the oil drain pipe P1 that connects the bearing portion 18 and the main oil tank 20. Further, the sub oil tank 22 has a smaller capacity than the main oil tank 20. According to this, the bearing portion 18 becomes lower than the oil level in the main oil tank 20 due to the inclination of the ship due to shaking (for example, rolling or pitching), and the lubricating oil stored in the main oil tank 20 is discharged from the oil drain pipe P1. Even when the backflow from the main oil tank 20 is performed through the oil, the backflowing lubricating oil can be stored in the sub oil tank 22. Therefore, since the lubricating oil that has flowed back from the main oil tank 20 stays in the sub oil tank 22, it is possible to prevent the lubricating oil from flowing back from the main oil tank 20 to the bearing portion 18.

また、サブ油タンク２２は、水平状態における船舶の高さ方向において、軸受部１８よりも低い位置、かつ、メイン油タンク２０内の油面ＯＳよりも高い位置に配置されている。このとき、軸受部１８から排出された潤滑油は、潤滑部側排油管Ｐ１Ａを通じてサブ油タンク２２に導かれ、また、サブ油タンク２２内の潤滑油はタンク側排油管Ｐ１Ｂを通じてメイン油タンク２０に導かれる。このため、船舶が水平状態のとき、潤滑油がメイン油タンク２０からサブ油タンク２２へ逆流することがなく、また、軸受部１８から排出された潤滑油を円滑にサブ油タンク２２に導くことができる。 Further, the sub oil tank 22 is arranged at a position lower than the bearing portion 18 and at a position higher than the oil level OS in the main oil tank 20 in the height direction of the ship in the horizontal state. At this time, the lubricating oil discharged from the bearing portion 18 is guided to the sub oil tank 22 through the lubricating portion side oil drain pipe P1A, and the lubricating oil in the sub oil tank 22 passes through the tank side oil drain pipe P1B to the main oil tank 20. Guided to. Therefore, when the ship is in a horizontal state, the lubricating oil does not flow back from the main oil tank 20 to the sub oil tank 22, and the lubricating oil discharged from the bearing portion 18 is smoothly guided to the sub oil tank 22. Can be done.

また、サブ油タンク２２は、メイン油タンク２０から離れた位置の軸受部１８に対応して設置されている。この位置は、揺れによって船舶が傾斜したときにメイン油タンク２０内の油面ＯＳよりも軸受部１８が低くなりやすい位置にあたる。一方、メイン油タンク２０から近接した位置においては、メイン油タンク２０内の油面ＯＳよりも軸受部１８が低くなり難く、サブ油タンク２２を設置する必要がない。
このように、サブ油タンク２２の設置位置を限定することで、逆流を抑制するためのサブ油タンク２２の数を必要最低限に抑えることができる。これにより、サブ油タンク２２の設置による重量の増加やコストの増加を抑えることができる。 Further, the sub oil tank 22 is installed corresponding to the bearing portion 18 at a position away from the main oil tank 20. This position corresponds to a position where the bearing portion 18 tends to be lower than the oil level OS in the main oil tank 20 when the ship is tilted due to shaking. On the other hand, at a position close to the main oil tank 20, the bearing portion 18 is less likely to be lower than the oil level OS in the main oil tank 20, and it is not necessary to install the sub oil tank 22.
By limiting the installation position of the sub oil tank 22 in this way, the number of sub oil tanks 22 for suppressing backflow can be suppressed to the minimum necessary. As a result, it is possible to suppress an increase in weight and an increase in cost due to the installation of the sub oil tank 22.

なお、タービン１２、減速機１４、発電機１６の配列順は、図１等に示す配列順に限定されない。また、船舶に搭載されている機器は、タービン１２、減速機１４、発電機１６に限らず、潤滑油か供給される潤滑部が設けられた機器であればよい。 The arrangement order of the turbine 12, the speed reducer 14, and the generator 16 is not limited to the arrangement order shown in FIG. 1 and the like. Further, the equipment mounted on the ship is not limited to the turbine 12, the speed reducer 14, and the generator 16, and may be equipment provided with lubricating oil or a lubricating portion to be supplied.

１ 排油機構
１０ 台板
１２ タービン（機器）
１４ 減速機（機器）
１６ 発電機（機器）
１８ 軸受部（潤滑部）
１８Ａ 排油口
２０ メイン油タンク
２２ サブ油タンク
Ｐ１Ａ（Ｐ１） 潤滑部側排油管（排油管）
Ｐ１Ｂ（Ｐ１） タンク側排油管（排油管）
Ｐ２ 排油管
Ｐ３ 排油管
ＯＳ 油面 1 Oil drainage mechanism 10 Base plate 12 Turbine (equipment)
14 Reducer (equipment)
16 Generator (equipment)
18 Bearing part (lubrication part)
18A Oil drain port 20 Main oil tank 22 Sub oil tank P1A (P1) Lubrication part side oil drain pipe (oil drain pipe)
P1B (P1) Tank side oil drain pipe (oil drain pipe)
P2 Oil drain pipe P3 Oil drain pipe OS Oil level

Claims (5)

船舶に搭載された機器の潤滑部に接続された排油管を通じて、該潤滑部から排出された潤滑油が導かれるメイン油タンクと、
前記潤滑部と前記メイン油タンクとの間の前記排油管に設けられ、該メイン油タンクよりも小容量とされたサブ油タンクと、
を備えている排油機構。 A main oil tank in which the lubricating oil discharged from the lubricating part is guided through an oil draining pipe connected to the lubricating part of the equipment mounted on the ship.
A sub-oil tank provided in the oil drain pipe between the lubricating portion and the main oil tank and having a smaller capacity than the main oil tank,
The oil draining mechanism is equipped with. 前記サブ油タンクは、水平状態における前記船舶の高さ方向において、前記潤滑部よりも低い位置、かつ、前記メイン油タンク内の基準油面よりも高い位置に配置されている請求項１に記載の排油機構。 The first aspect of claim 1, wherein the sub oil tank is arranged at a position lower than the lubrication portion and higher than the reference oil level in the main oil tank in the height direction of the ship in a horizontal state. Oil drainage mechanism. 前記サブ油タンクは、前記船舶の幅方向または長さ方向において、前記メイン油タンクから離間した位置に配置されている請求項２に記載の排油機構。 The oil draining mechanism according to claim 2, wherein the sub oil tank is arranged at a position separated from the main oil tank in the width direction or the length direction of the ship. 前記サブ油タンクの容量は、前記船舶が揺れたときの傾斜角度および前記船舶の揺れ周期から得られる、一周期あたりに前記メイン油タンクから前記サブ油タンクへ逆流する前記潤滑油の量と、前記一周期あたりに前記潤滑部から前記サブ油タンクへ導かれる前記潤滑油の量との合計量を貯留できる容量とされている請求項１から３のいずれかに記載の排油機構。 The capacity of the sub oil tank is the amount of the lubricating oil flowing back from the main oil tank to the sub oil tank per cycle, which is obtained from the inclination angle when the ship sways and the sway cycle of the ship. The oil draining mechanism according to any one of claims 1 to 3, which has a capacity capable of storing a total amount of the lubricating oil guided from the lubricating portion to the sub oil tank per cycle. 請求項１に記載の排油機構を備えている船舶。 A ship provided with the oil draining mechanism according to claim 1.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131370A (en) * 1974-07-08 1976-03-17 Imo Industri Ab
JP2001003708A (en) * 1999-06-15 2001-01-09 Mitsubishi Heavy Ind Ltd Steam turbine plant and installation method for apparatus including it
JP2010071120A (en) * 2008-09-17 2010-04-02 Hitachi Ltd Bearing lubricant circulation device for gas turbine generating facility
KR20100095310A (en) * 2009-02-20 2010-08-30 삼성중공업 주식회사 Stern tube lubricating system
JP2013180617A (en) * 2012-02-29 2013-09-12 Mitsubishi Heavy Ind Ltd Ship equipped with power plant
US20180087403A1 (en) * 2016-09-26 2018-03-29 Solar Turbines Incorporated Sump tank for a gas turbine engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5131370B2 (en) 2011-08-16 2013-01-30 富士通株式会社 Power supply voltage adjusting device and power supply voltage adjusting method

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Publication number Priority date Publication date Assignee Title
JPS5131370A (en) * 1974-07-08 1976-03-17 Imo Industri Ab
JP2001003708A (en) * 1999-06-15 2001-01-09 Mitsubishi Heavy Ind Ltd Steam turbine plant and installation method for apparatus including it
JP2010071120A (en) * 2008-09-17 2010-04-02 Hitachi Ltd Bearing lubricant circulation device for gas turbine generating facility
KR20100095310A (en) * 2009-02-20 2010-08-30 삼성중공업 주식회사 Stern tube lubricating system
JP2013180617A (en) * 2012-02-29 2013-09-12 Mitsubishi Heavy Ind Ltd Ship equipped with power plant
US20180087403A1 (en) * 2016-09-26 2018-03-29 Solar Turbines Incorporated Sump tank for a gas turbine engine

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