JP2013052863A - Flat plate watertight device of underwater mounting azimuth thruster, and mounting method thereof - Google Patents
Flat plate watertight device of underwater mounting azimuth thruster, and mounting method thereof Download PDFInfo
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- JP2013052863A JP2013052863A JP2012189283A JP2012189283A JP2013052863A JP 2013052863 A JP2013052863 A JP 2013052863A JP 2012189283 A JP2012189283 A JP 2012189283A JP 2012189283 A JP2012189283 A JP 2012189283A JP 2013052863 A JP2013052863 A JP 2013052863A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
- B63H20/02—Mounting of propulsion units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
- B63H2005/1254—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis
Abstract
Description
本発明は、掘削船（ｄｒｉｌｌ ｓｈｉｐ）のような一般商船の船型を備えた船舶に設けられる水中マウンティングアジマススラスタ（Ｕｎｄｅｒｗａｔｅｒ ｍｏｕｎｔｉｎｇ ａｚｉｍｕｔｈ ｔｈｒｕｓｔｅｒ）に適した平板型水密（ｗａｔｅｒｔｉｇｈｔｎｅｓｓ）装置及びその搭載方法に関するものである。 The present invention relates to a flat watertightness device suitable for an underwater mounting azimuth thruster provided in a ship having a general merchant ship shape such as a drill ship, and a mounting method thereof. It is.
一般的に、船舶の推進装置の中で旋回方式の電気駆動式推進装置の一種であるアジマススラスタは、図１及び図２に示すように、船舶の推進と操舵機能ともを有する装置である。このアジマススラスタは、主機関と分離設置が可能なので、船舶内の区画配置の柔軟性が増加し、機関室の容積減少及び貨物倉の容積増加の効果があり、自体回転による調整性能が容易な長所を持っている。 In general, an azimuth thruster, which is a kind of a swivel type electrically driven propulsion device in a marine vessel propulsion device, is a device having both marine vessel propulsion and steering functions, as shown in FIGS. Because this azimuth thruster can be installed separately from the main engine, the flexibility of the arrangement of compartments in the ship increases, and there is an effect of reducing the volume of the engine room and increasing the volume of the cargo hold. Has advantages.
一方、水中マウンティングアジマススラスタは、掘削船、シャトルタンカー（ｓｈｕｔｔｌｅ ｔａｎｋｅｒ）、ＦＰＳＯなどに設けられる主推進装置又はコンピュータによる自動位置制御（ｄｙｎａｍｉｃ ｐｏｓｉｔｉｏｎｉｎｇ）のための推進装置であって、水面下で設置されるという特徴を有する。これは、多年間１箇所で作業を行うべき海洋装備（ｏｆｆｓｈｏｒｅ ｆａｃｉｌｉｔｙ）がその作業を中断することなく、水中で直ちに水中マウンティングアジマススラスタを交替できることで、経済性に優れているため近年頻繁に用いられている。 On the other hand, the underwater mounting azimuth thruster is a main propulsion device provided in an excavation ship, a shuttle tanker, an FPSO or the like, or a propulsion device for dynamic position control by a computer, and is installed under the surface of the water. It has the feature that. This is frequently used in recent years because it is economically efficient because the offshore facility that should work at one place for many years can replace the underwater mounting azimuth thruster immediately underwater without interrupting the work. It has been.
このような水中マウンティングアジマススラスタの一般的な水面下での設置方法は、次のように２つに分けられる。 A general method for installing such an underwater mounting azimuth thruster under the water is divided into two as follows.
一つは、図３乃至図６に示すように、水深の深い所で、海水面５０でクレーン船（ｃｒａｎｅ ｂａｒｇｅ）３０又は本船１０のクレーンを用いて水中マウンティングアジマススラスタ２０を海水面５０の下方に下降させた後、水中マウンティングアジマススラスタ２０が設置される本船１０から供給されるスチールワイヤロープ（ｓｔｅｅｌ ｗｉｒｅ ｒｏｐｅ）６０と連結して本船１０で、ワイヤロープで引き上げて設置する方法である。 First, as shown in FIG. 3 to FIG. 6, the underwater mounting azimuth thruster 20 is moved below the sea level 50 by using a crane barge 30 or a crane of the main ship 10 at a sea level 50 at a deep water depth. In this method, the steel wire rope 60 is connected to a steel wire rope 60 supplied from the ship 10 where the underwater mounting azimuth thruster 20 is installed, and then pulled up with a wire rope.
もう一つは、図７乃至図９に示すように、一定の水深を有する場所の海底面４０に水中マウンティングアジマススラスタ２０を安着させ、本船１０をこの安着させた水中マウンティングアジマススラスタ２０の上方に移動させた後、本船から供給されるスチールワイヤロープを水中マウンティングアジマススラスタ２０に接続して本船１０のワイヤロープで引き上げて設置する方法である。 The other is, as shown in FIGS. 7 to 9, an underwater mounting azimuth thruster 20 is seated on the sea bottom surface 40 at a certain depth, and the ship 10 is placed on the seated underwater mounting azimuth thruster 20. In this method, the steel wire rope supplied from the ship is connected to the underwater mounting azimuth thruster 20 and pulled up by the wire rope of the ship 10 after being moved upward.
このように水中マウンティングアジマススラスタを水面下で設置するためには、水中マウンティングアジマススラスタの脱着の際に船舶内部の水密性を維持することが最も重要である。従来からは、図１０乃至図１２に示すように、ドーム（ｄｏｍｅ）状の水密装置８０を船舶の水中マウンティングアジマススラスタの脱着部に搭載することによって、水中マウンティングアジマススラスタの設置の際に船舶内部の水密性を維持した。 Thus, in order to install the underwater mounting azimuth thruster under the surface of the water, it is most important to maintain the water tightness inside the ship when the underwater mounting azimuth thruster is detached. Conventionally, as shown in FIG. 10 to FIG. 12, a dome-shaped watertight device 80 is mounted on a demounting part of an underwater mounting azimuth thruster of the ship, thereby installing the underwater mounting azimuth thruster inside the ship. The water tightness of the was maintained.
ところで、掘削船のような一般商船の船型を備えた船舶の場合、半潜水船（ｓｅｍｉｓｕｂｍｅｒｓｉｂｌｅ）のような他の海洋装備に比べて機動性には優れるが、それに反して水中マウンティングアジマススラスタを設置する空間が相対的に狭い空間的制約がある。このように空間的制約がある掘削船などの船舶に水中マウンティングアジマススラスタを適用すると、次のような短所が発生する。 By the way, in the case of a ship equipped with a general merchant ship type such as a drilling ship, it is superior in mobility compared to other marine equipment such as a semi-submersible, but on the contrary, an underwater mounting azimuth thruster is installed. There is a spatial constraint where the space to be operated is relatively narrow. When the underwater mounting azimuth thruster is applied to a ship such as an excavation ship having a spatial restriction as described above, the following disadvantages occur.
１．ドーム状の水密装置の搭載空間の狭小
推進及び操舵機能を同時に遂行する水中マウンティングアジマススラスタは、掘削船などの船舶の船尾に付着されるが、図１３に示すように、一般的にスケグ（ｓｋｅｇ）状の構造物に取り付けられる。したがって、一般的なルーム（ｒｏｏｍ）形態の区画（ｃｏｍｐａｒｔｍｅｎｔ）に比べて使用可能な空間が少なくてドーム状の水密装置８０を搭載するのが困難となる。
1. Narrowing of the mounting space of the dome-shaped watertight device An underwater mounting azimuth thruster that simultaneously performs the propulsion and steering functions is attached to the stern of a ship such as a drilling ship, but generally, as shown in FIG. ) -Like structure. Accordingly, it is difficult to mount the dome-shaped watertight device 80 because there is less space available than a room-shaped compartment.
また、一旦水中マウンティングアジマススラスタの付近にドーム状の水密装置８０を搭載するとしても、狭い空間に搭載するため、作業時にドーム状の水密装置８０の移動に制約が発生する。このような問題に対して、モーターの配置を垂直に上げてドーム状の水密装置８０が通る道を設けることによって搭載空間の狭小問題を解決しようとするが、この場合、動力伝達軸の長さが長くなってモーターと水中マウンティングアジマススラスタとの間の軸整列（ｓｈａｆｔ ａｌｉｇｎｍｅｎｔ）が難しくなり、動力伝達の効率が減少するという短所を招く。 Further, even if the dome-shaped watertight device 80 is once mounted near the underwater mounting azimuth thruster, since it is mounted in a narrow space, there is a restriction on the movement of the dome-shaped watertight device 80 during work. In order to solve such a problem, an attempt is made to solve the problem of narrowing the mounting space by raising the motor arrangement vertically and providing a path through which the dome-shaped watertight device 80 passes. In this case, the length of the power transmission shaft is reduced. As a result, the shaft alignment between the motor and the underwater mounting azimuth thruster becomes difficult, resulting in a decrease in power transmission efficiency.
２．ドーム状の水密装置のハンドリング問題
ドーム状の水密装置８０のサイズが水中マウンティングアジマススラスタに従って変わるが、一般的に使用されるドーム状の水密装置８０は、約１トンの重さと、約２ｍの直径及び５００ｍｍの高さのサイズとを有すると知られている。また、ドーム状の水密装置８０は、圧力を十分に耐えるように厚い鋼板（ｓｔｅｅｌ ｐｌａｔｅ）を用いて一体型に製造される。したがって、上述したように狭い空間でこのような重量物をハンドリング（ｈａｎｄｌｉｎｇ）することは、周辺装備の破損と人命事故の危険を常に伴う。
2. Dome-shaped watertight device handling issues Although the size of the dome-shaped watertight device 80 varies according to the underwater mounting azimuth thruster, the commonly used dome-shaped watertight device 80 weighs about 1 ton and has a diameter of about 2 meters. And a size of 500 mm in height. In addition, the dome-shaped watertight device 80 is manufactured as a single piece using a thick steel plate so as to sufficiently withstand the pressure. Therefore, handling such heavy objects in a narrow space as described above always involves damage to peripheral equipment and a risk of human life.
３．供給業者の過度仕様
従来の水中マウンティングアジマススラスタ供給業者がドーム状の水密装置８０を設計する基準対象は、喫水（ｄｒａｆｔ）が大きい半潜水船タイプの海洋装備である。この場合、水中マウンティングアジマススラスタが設けられる水深はおよそ３０〜４０ｍであり、水圧は３〜４ｂａｒである。しかしながら、掘削船などの船舶の最大喫水は、およそ１０ｍ前後に水中マウンティングアジマススラスタが設置されて運用される水深は、それより低くて水圧が１ｂａｒ未満である場合が多い。すなわち、掘削船のような船舶内で要求される水中マウンティングアジマススラスタの水密圧力は、従来のドーム状の水密装置８０が保証する水密圧力をはるかに下回るので、従来の供給業者が提供するドーム状の水密装置８０は、掘削船のような船舶に適用するのに非常に過度な仕様を有するという問題があった。
3. Supplier over-specification The standard object for which conventional underwater mounting azimuth thruster suppliers design domed watertight devices 80 is semi-submersible type marine equipment with a high draft. In this case, the water depth at which the underwater mounting azimuth thruster is provided is approximately 30 to 40 m, and the water pressure is 3 to 4 bar. However, the maximum draft of a vessel such as a drilling vessel is often lower than about 10 m, and the water pressure is less than 1 bar when the underwater mounting azimuth thruster is installed and operated. That is, the watertight pressure of the underwater mounting azimuth thruster required in a ship such as a drilling ship is much lower than the watertight pressure guaranteed by the conventional dome-shaped watertight device 80, so that the dome-shaped provided by the conventional supplier is provided. The watertight device 80 has a problem that it has a very excessive specification to be applied to a ship such as a drilling ship.
したがって、上記した従来技術の問題点を解決するために、本発明の目的は、掘削船のような一般商船の船型を備えた船舶に設けられる水中マウンティングアジマススラスタに適合した平板型水密装置及びその搭載方法を提供することにある。 Accordingly, in order to solve the above-described problems of the prior art, an object of the present invention is to provide a flat watertight device suitable for an underwater mounting azimuth thruster provided in a ship having a general merchant ship shape such as a drilling ship, and its It is to provide a mounting method.
上記のような目的を達成するために、本発明の一態様によれば、掘削船のような一般商船の船型を備えた船舶の船体に固定設置され、円柱側面形状のボディ内部に水中マウンティングアジマススラスタの設置上部を覆いかぶせる固定部と、上記固定部の上面に脱着が可能なように設置され、平板形状のボディが上記固定部と結合して水密構造を形成する脱着部とを含むことを特徴とする水中マウンティングアジマススラスタの平板型水密装置が提供される。 In order to achieve the above-described object, according to one aspect of the present invention, an underwater mounting azimuth is fixedly installed in a hull of a ship having a general merchant ship shape such as a drilling ship, and is provided inside a cylindrical side surface body. A fixing portion that covers the upper portion of the thruster, and a detachable portion that is installed on the upper surface of the fixing portion so as to be detachable, and a plate-shaped body is coupled to the fixing portion to form a watertight structure. An underwater mounting azimuth thruster flat watertight device is provided.
この場合、上記脱着部はボディが中間及び左右両側に三等分されることを特徴とする。 In this case, the detachable part is characterized in that the body is divided into three equal parts in the middle and on the left and right sides.
また本発明の他の態様によれば、水中マウンティングアジマススラスタの平板型水密装置の搭載方法であって、掘削船のような一般商船の船型を備えた船舶の船体に固定部を設置するステップと、上記固定部の上面に脱着部を設置して水密構造を形成するステップとを有する。 According to another aspect of the present invention, there is provided a method of mounting a flat watertight device for an underwater mounting azimuth thruster, the step of installing a fixing portion on a hull of a ship having a general merchant ship shape such as a drilling ship; And a step of installing a desorption part on the upper surface of the fixed part to form a watertight structure.
この場合、上記脱着部は、三等分されたボディの中間及び左右両側面を任意の順序で択一して固定部の上面に設置することを特徴とする。 In this case, the detachable portion is installed on the upper surface of the fixed portion by selecting the middle and left and right side surfaces of the divided body in any order.
本発明は、掘削船のような一般商船の船型を備えた船舶に水中マウンティングアジマススラスタを取り付けるための水密作業の際に、船舶内の別途の空間を設置せずに、既存の狭い空間でも水密装置を容易に搭載でき、その上、水密装置のサイズと重さが小さくてハンドリング時の人命事故及び装備破損の危険性を格段に低減させる効果がある。 The present invention eliminates the need for installing a separate space in a ship when installing a submerged mounting azimuth thruster on a ship having a general merchant ship shape such as a drilling ship. The device can be easily mounted, and the size and weight of the watertight device are small, and there is an effect of greatly reducing the risk of human accidents and equipment damage during handling.
以下、本発明の望ましい実施形態を添付の図面を参照して詳細に説明する。 Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
図面において、同一の構成要素に対してはできるだけ同一の参照符号及び参照番号を付して説明する。下記の説明で、本発明に関連した公知の機能又は構成に関する具体的な説明が本発明の要旨を不明にすると判断された場合に、その詳細な説明を省略する。 In the drawings, the same components are denoted by the same reference numerals and reference numerals as much as possible. In the following description, when it is determined that a specific description related to a known function or configuration related to the present invention makes the gist of the present invention unclear, a detailed description thereof will be omitted.
＜水中マウンティングアジマススラスタの平板型水密装置＞
図１４乃至図１６は、本発明による平板型水密装置を示す。
<Underwater mounting azimuth thruster flat watertight device>
14 to 16 show a flat plate type watertight device according to the present invention.
本発明は、掘削船のような一般商船の船型を備えた船舶に設けられる水中マウンティングアジマススラスタに適合した平板型水密装置を提供することを目的とし、そのような目的を達成するために、固定部１及び脱着部２を含んでなる。 An object of the present invention is to provide a flat-type watertight device suitable for an underwater mounting azimuth thruster provided in a ship having a general merchant ship shape such as a drilling ship, and in order to achieve such an object, A part 1 and a desorption part 2 are included.
本発明による平板型水密装置は、水圧の面では理想的であるが、搭載時には空間上の多くの制約を受ける従来の一体型に製造されたドーム状の水密装置８０を平板型のスチールカバー（ｓｔｅｅｌ ｃｏｖｅｒ）で製造し、これを三等分することによって船舶内搭載時の効率を極大化する。 The flat watertight device according to the present invention is ideal in terms of water pressure, but the conventional dome-shaped watertight device 80, which has many space restrictions when mounted, is replaced with a flat steel cover ( steel cover) and divide it into three equal parts to maximize the efficiency when installed in a ship.
本発明による平板型水密装置の一つの構成要素である固定部１は、掘削船のような一般商船の船型を備えた船舶の船体（ｈｕｌｌ）７に固定設置され、この状態で円柱の側面形状のボディ内部に水中マウンティングアジマススラスタ２０の設置上部を覆いかぶせる。 The fixing portion 1 as one component of the flat plate type watertight device according to the present invention is fixedly installed on a hull 7 of a ship having a general merchant ship shape such as an excavation ship, and in this state, the side surface shape of the cylinder is fixed. The installation upper part of the underwater mounting azimuth thruster 20 is covered inside the body.
本発明による平板型水密装置の他の構成要素である脱着部２は、好ましくは円形の平板形状を有するスチールカバーであって、固定部１の上面に脱着が可能なように設置され、平板形状のボディが固定部１と結合して水密構造を形成する。 The detachable portion 2 which is another component of the flat plate watertight device according to the present invention is a steel cover preferably having a circular flat plate shape, and is installed on the upper surface of the fixed portion 1 so as to be detachable. The body is coupled with the fixing portion 1 to form a watertight structure.
この場合、本発明の望ましい実施形態によると、脱着部２と固定部１との間にＯリング（ｏ−ｒｉｎｇ）５を挿入し、ボルト及びナット６を用いて水密構造を形成する。掘削船のような船舶の最大喫水（ｍａｘ ｄｒａｆｔ）は、およそ１０ｍ前後であり、水中マウンティングアジマススラスタ２０が設置されて運用される水深は、それより低くて水圧が１ｂａｒ未満である場合が多いので、上述したように脱着部２及び固定部１の結合構造でも十分に１ｂａｒ程度の水密圧力を確保することができる。 In this case, according to a preferred embodiment of the present invention, an O-ring 5 is inserted between the detachable part 2 and the fixing part 1 and a watertight structure is formed using bolts and nuts 6. The maximum draft of a ship such as a drilling ship is about 10 m, and the water depth at which the underwater mounting azimuth thruster 20 is installed and operated is often lower than that and the water pressure is less than 1 bar. As described above, a watertight pressure of about 1 bar can be sufficiently secured even in the coupling structure of the detachable portion 2 and the fixed portion 1.
一方、本発明によると、固定部１が船体７に固定設置された状態でカバーである脱着部２のみを固定部１の上面に結合して水密構造を形成することができ、それによって従来の一体型で製造されたドーム状の水密装置８０全体を一度にハンドリングしなければならない場合に比べて、作業者の負担が格段に減少する。 On the other hand, according to the present invention, in a state where the fixing portion 1 is fixedly installed on the hull 7, only the detachable portion 2 as a cover can be coupled to the upper surface of the fixing portion 1, thereby forming a watertight structure. Compared with the case where the entire dome-shaped watertight device 80 manufactured as a single unit must be handled at a time, the burden on the operator is significantly reduced.
さらに、本発明の望ましい実施形態によると、脱着部２は、ボディが中間３及び左右量側面４に三等分されることで、作業者は、このように三等分された中間３及び左右量側面４を任意の順序で択一して固定部１の上面に設置できるため、船舶内の搭載時に作業効率を一層向上させることができる。 Further, according to a preferred embodiment of the present invention, the detachable part 2 is divided into the body 3 and the left and right side surfaces 4 by dividing the body into three equal parts. Since the quantity side surface 4 can be selected and installed on the upper surface of the fixed portion 1 in an arbitrary order, the working efficiency can be further improved when mounted in the ship.
このように本発明によると、掘削船のような一般商船の船型を備えた船舶に水中マウンティングアジマススラスタ２０を設置するための水密作業時に船舶内の別途の空間を備えることなく、既存の狭い空間内でも水密装置を容易に搭載できる。また、脱着部２は、従来の一体型に製造されたドーム状の水密装置８０に比べて重さが１／３〜１／５まで減少し、サイズも半分以上縮小することによって、本発明による平板型水密装置のサイズと重さが全体的に小さくなるので、ハンドリング時の人命事故及び装備破損の危険性も一層低減するようになる。 As described above, according to the present invention, an existing narrow space can be provided without providing a separate space in the ship during watertight operation for installing the underwater mounting azimuth thruster 20 on a ship having a general merchant ship shape such as a drilling ship. A watertight device can be easily installed inside. Further, the detachable part 2 is reduced in weight by 1/3 to 1/5 and reduced in size by more than half compared to the dome-shaped watertight device 80 manufactured in the conventional integrated type. Since the size and weight of the flat watertight device are reduced as a whole, the risk of human accidents and equipment damage during handling is further reduced.
一方、本発明の実施形態では、本発明による平板型水密装置の信頼性を確保するために数値解析による理論的検証とエアーテストを通じる実際検証を実施する。図１７及び図１８は本発明による平板型水密装置の数値解析のためのモデリング状態を、図１９は本発明による平板型水密装置のエアーテスト仕様書を、各々示す。 On the other hand, in the embodiment of the present invention, theoretical verification by numerical analysis and actual verification through an air test are performed in order to ensure the reliability of the flat watertight device according to the present invention. 17 and 18 show modeling states for numerical analysis of the flat plate watertight device according to the present invention, and FIG. 19 shows an air test specification of the flat plate watertight device according to the present invention.
数値解析の際には、船体７を含む本発明による平板型水密装置全体のモデリングを遂行する。このとき、数値解析条件（ａｎａｌｙｓｉｓ ｃｏｎｄｉｔｉｏｎ）として、水圧は０．７５ｂａｒ（ｎｏｂｌｅ ｄｒｉｌｌ ｓｈｉｐ基準）、安全係数（ｓａｆｅｔｙ ｆａｃｔｏｒ）は２、Ａ級スチール（Ａ ｇｒａｄｅ ｓｔｅｅｌ）を使用するので、降伏強度（ｙｉｅｌｄ ｓｔｒｅｎｇｔｈ）は２３５Ｎ／ｍｍ２である。数値解析の結果、脱着部２の真中と脱着部２を締結するボルト部分でストレス（ｓｔｒｅｓｓ）が集中され、その値では１０４Ｎ／ｍｍ２となることを確認し得る。これは、基準である２３５Ｎ／ｍｍ２に比べて低い値であって、理論的には本発明による平板型水密装置が安全であることを証明するものである。 In the numerical analysis, modeling of the entire flat watertight device including the hull 7 according to the present invention is performed. At this time, since the water pressure is 0.75 bar (noble drill ship standard), the safety factor is 2, and the A grade steel is used as the numerical analysis condition, the yield strength (yield) strength) is 235 N / mm 2 . As a result of the numerical analysis, it can be confirmed that stress is concentrated in the middle of the detachable portion 2 and the bolt portion that fastens the detachable portion 2, and the value is 104 N / mm 2 . This is a lower value than the standard 235 N / mm 2 , and theoretically proves that the flat watertight device according to the present invention is safe.
一方、本発明の実施形態において、水密テストは、脱着部２を固定部１に設置した後に実際にエアーを注入して実施する。本テストの紹介（ｉｎｓｔｒｕｃｔｉｏｎ）及び手順は、図１９に示す。本テストは、船主及び船級の立会いの下に実施し、そのテスト結果、水密が全く確保されることを確認できる。 On the other hand, in the embodiment of the present invention, the watertight test is performed by actually injecting air after the detachable portion 2 is installed on the fixed portion 1. The introduction and procedure of this test is shown in FIG. This test is conducted in the presence of the shipowner and the ship class, and it can be confirmed that the watertightness is completely ensured as a result of the test.
＜水中マウンティングアジマススラスタの平板型水密装置の搭載方法＞
本発明は、上述した水中マウンティングアジマススラスタの平板型水密装置の搭載方法であって、掘削船のような一般商船の船型を備えた船舶の船体７に固定部１を設置するステップと、固定部１の上面に脱着部２を設置して水密構造を形成するステップとを有する水中マウンティングアジマススラスタの平板型水密装置の搭載方法を提供する。一方、この詳細な説明は、上記した説明と同様であるため、重複的な説明を省略する。
<Mounting method of flat watertight device for underwater mounting azimuth thruster>
The present invention is a mounting method of the above-described flat watertight device for an underwater mounting azimuth thruster, the step of installing the fixing portion 1 on the hull 7 of a ship having a general merchant ship shape such as an excavation ship, There is provided a mounting method of a flat watertight device for an underwater mounting azimuth thruster having a step of forming a watertight structure by installing a desorption part 2 on the upper surface of 1. On the other hand, since this detailed description is the same as the above description, redundant description is omitted.
以上、本発明の詳細な説明においては具体的な実施形態に関して説明したが、特許請求の範囲を外れない限り、様々な変更が可能であることは、当該技術分野における通常の知識を持つ者には明らかである。したがって、本発明の範囲は、前述の実施形態に限定されるものではなく、特許請求の範囲の記載及びこれと均等なものに基づいて定められるべきである。 As mentioned above, in the detailed description of the present invention, specific embodiments have been described. However, it is understood by those skilled in the art that various modifications can be made without departing from the scope of the claims. Is clear. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined based on the description of the scope of claims and equivalents thereof.
１ 固定部
２ 脱着部
３ 脱着部の三等分された中間ボディ
４ 脱着部の三等分された左右両側面ボディ
５ Ｏリング
６ ボルト及びナット
７ 船舶の船体
１０ 船舶
２０ 水中マウンティングアジマススラスタ
３０ ロードアウトバージ、プローティングドッグ又はこれに類似したバージ船
４０ 海底面
５０ 海水面
６０ スチールワイヤロープ
７０ 水中マウンティングアジマススラスタ定盤（ｓｕｒｆａｃｅ ｐｌａｔｅ）
８０ 従来のドーム状の水密装置
DESCRIPTION OF SYMBOLS 1 Fixing part 2 Detachment part 3 Middle body of detachment part divided into three parts 4 Right and left both-side body body of detachment part 5 O-ring 6 Bolt and nut 7 Ship hull 10 Ship 20 Underwater mounting azimuth thruster 30 Load Out barge, plotting dog or similar barge 40 Sea bottom 50 Sea surface 60 Steel wire rope 70 Underwater mounting azimuth thruster plate
80 Conventional dome-shaped watertight device
Claims (8)
前記固定部の上面に脱着が可能なように設置され、平板形状のボディが前記固定部と結合して水密構造を形成する脱着部と、
を含むことを特徴とする水中マウンティングアジマススラスタの平板型水密装置。 A fixed part that is fixedly installed on the hull of a ship having a general merchant ship shape such as a drilling ship, and covers the installation upper part of the underwater mounting azimuth thruster inside the cylindrical side surface body;
A detachable part that is installed on the upper surface of the fixed part so as to be detachable, and a plate-shaped body is combined with the fixed part to form a watertight structure;
A flat watertight device for an underwater mounting azimuth thruster.
掘削船のような一般商船の船型を備えた船舶の船体に固定部を設置するステップと、
前記固定部の上面に脱着部を設置して水密構造を形成するステップと、
を有することを特徴とする方法。 An underwater mounting azimuth thruster flat watertight device mounting method,
Installing a fixing portion on a hull of a ship having a general merchant ship shape such as a drilling ship;
Installing a desorption part on the upper surface of the fixed part to form a watertight structure;
A method characterized by comprising:
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0087929 | 2011-08-31 | ||
| KR1020110087929A KR20130024467A (en) | 2011-08-31 | 2011-08-31 | Flat type sealing device and method of underwater mounting azimuth thruster |
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| JP2013052863A true JP2013052863A (en) | 2013-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2012189283A Pending JP2013052863A (en) | 2011-08-31 | 2012-08-29 | Flat plate watertight device of underwater mounting azimuth thruster, and mounting method thereof |
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| Country | Link |
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| JP (1) | JP2013052863A (en) |
| KR (1) | KR20130024467A (en) |
| CN (1) | CN102963516A (en) |
| FI (1) | FI20125890L (en) |
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| JP2015131529A (en) * | 2014-01-10 | 2015-07-23 | 信吉 森元 | Main propeller, ship equipped with additional propeller, and its hybrid navigation method |
| JP2018512325A (en) * | 2015-03-25 | 2018-05-17 | アーベーベー・シュバイツ・アーゲー | Configuration and method for installing a propulsion unit |
| JP2020090184A (en) * | 2018-12-05 | 2020-06-11 | 株式会社関海事工業所 | Knockdown pontoon with propulsion unit |
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| CN103661801B (en) * | 2013-11-29 | 2016-03-09 | 大连船舶重工集团有限公司 | The installation ancillary system of ocean engineering underwater propeller and installation method |
| KR101626827B1 (en) * | 2014-02-20 | 2016-06-02 | (주)지인테크 | Receptacle for azimuth thruster |
| KR102178515B1 (en) * | 2015-03-26 | 2020-11-13 | (주)씨앤피코리아 | Receptacle for azimuth thruster |
| WO2016153097A1 (en) * | 2015-03-26 | 2016-09-29 | 주식회사 지인테크 | Receptacle module for azimuth propeller |
| CN105501391B (en) * | 2015-11-25 | 2018-01-23 | 武昌船舶重工集团有限公司 | A kind of all-direction propeller is installed to the installation method of bottom of ship from building berth |
| EP4253223A1 (en) * | 2022-03-30 | 2023-10-04 | ABB Schweiz AG | Mounting structure, mounting arrangement, propulsion unit, floating structure and method for mounting propulsion unit to floating structure |
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| JP2003191896A (en) * | 2001-12-27 | 2003-07-09 | Kawasaki Heavy Ind Ltd | Propulsion device for vessel |
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| JP2015131529A (en) * | 2014-01-10 | 2015-07-23 | 信吉 森元 | Main propeller, ship equipped with additional propeller, and its hybrid navigation method |
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| JP2020090184A (en) * | 2018-12-05 | 2020-06-11 | 株式会社関海事工業所 | Knockdown pontoon with propulsion unit |
Also Published As
| Publication number | Publication date |
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| CN102963516A (en) | 2013-03-13 |
| FI20125890L (en) | 2013-03-01 |
| KR20130024467A (en) | 2013-03-08 |
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