JP3677724B2 - Deep-sea water intake device with floating intake - Google Patents

Description

【００１６】
上述のように、この発明では軽比重の素材により形成した取水塔の自体の浮力と、開口部を上向きにラッパ状に屈曲形成して、開口内から取水塔を長く引き出した取水口保護部材とによつて、取水塔の開口端による取水口を海底面から１０〜２０ｍの高さに確実に設定することができ、また潮流による取水塔の変形量も僅かで、その変形も曲面に形成された開口内面により支えられるようになるので、取水塔における応力集中も生じ難く、取水口は常に設定高さに立ち上がってその位置を確保し、底質物が細粒分を含む海域で、潮流による粒子の舞い上りが海底に観察されるような所でも、粒子の吸込みが防止されて深層水のみを取水することができる。
【００１７】
また取水口保護部材を受架台の端部に回転自在に設けて、取水塔の浮力によりラッパ状に屈曲形成した開口部が上向きになるようにしたので、取水塔は吊り下ろしによる受架台の着底状態に左右されず上側に位置して立ち上がることから、受架台の設置に際して姿勢制御も不要となり、構造も受架台に取水口保護部材を設ける程度で済むの簡単であり、低コストでの製造が可能となる。
【図面の簡単な説明】
【図１】 この発明に係わる浮遊型取水口を備えた海洋深層取水装置の１実施形態の側面図である。
【図２】 同上の要部縦断側面図である。
【図３】 海底面への設置状態を示す説明図である。
【符号の説明】
１ 受架台
２ 送水管
３ 取水口保護部材
４ 中継管
５ 取水塔
６ 取水口
７ ルーズジョイント
８ ボルト
９ 斜材
１０ 支持筒[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a deep sea water intake apparatus provided with a floating intake that is installed on a deep sea floor and takes deep water to the ground.
[0002]
[Problems to be solved by the invention]
Deep ocean water has a low water temperature, and plankton, which is a food for fish, often propagates and contains medicinal components.It has been tried to pump ocean deep water to the ground and use it for various purposes. Yes.
[0003]
In an ordinary deep sea water intake device, a water intake is installed at a distance of about 3 to 5 m from the sea bottom so as not to suck in sediments on the sea bottom. Moreover, since it is installed in the deep sea, it is a form that does not require fine attitude control.
However, when the sediment is in the sea area containing fine particles and there is a tidal current, the rising of the particles is observed and the height can be 10-20 m, so there is a concern about the suction of particles in the conventional apparatus. Has been. In addition, a huge structure is required to install the water intake at a position of 10 to 20 m from the bottom of the sea, resulting in an economic problem.
[0004]
The present invention has been conceived from the above circumstances, and its purpose is to install a tubular intake tower adopted as an intake in the sea in a floating state so that the position of the intake is 10 to 20 m from the sea bottom. It is an object to provide a deep sea water intake apparatus having a new floating intake that can be easily set to the height of the water and can suppress stress concentration against deformation due to tidal flow of the intake tower by the intake protection member. .
[0005]
[Means for Solving the Problems]
This invention according to the above-described object includes a cradle for installing a water intake at the tip of the water pipe upward on the bottom of the sea, a water inlet protecting member rotatably provided at the end of the cradle and connected to the water pipe, and a water intake. It consists of a tubular intake tower drawn out into the sea for a long time from within the opening of the protective member, and an intake opening by the opening end of the intake tower, and the opening of the intake protective member is bent upward in a trumpet shape, In addition to preventing stress concentration due to deformation caused by tidal currents in the intake tower, the intake tower is made of light specific gravity material floating in the sea and the intake is set higher than the sea floor. .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In the figure, reference numeral 1 denotes a cradle installed on the seabed, which is shaped like a frame-shaped hexagonal frustum tilted sideways. In the center of the cradle, there is a water pipe 2 and a water inlet protecting member at the end of the cradle 3 is attached over both ends.
[0007]
The intake port protecting member 3 is formed of a tubular body in which one opening is bent upward in a trumpet shape and a flange 31 is integrally formed around the other opening, and a tubular tube having a required length is formed from the inside of the trumpet-shaped opening. The intake tower 5 is drawn out into the sea for a long time, and the intake end 5 serves as the intake 6.
[0008]
The intake tower 5 is made of a light specific gravity material floating in the sea, for example, a 10-20 m plastic tube made of high-density hard polyethylene (specific gravity 0.95) and the like, and a flange 51 is integrated at the base end. So that the flange 51 overlaps with the flange 31 of the intake port protection member 3 and is inserted into the intake port protection member 3 so that the tip end side is extended outward from the trumpet-shaped opening. It is.
[0009]
Reference numeral 7 denotes a hollow loose joint that connects the intake port protecting member 3 and the relay pipe 4. A flange 71 is integrally formed around the opening at the front end, and a flange 41 around the front end of the relay pipe 4 is formed at the rear end. Is integrally formed with a joint 72 for rotatably holding.
[0010]
The loose joint 7 and the intake port protecting member 3 are connected to each other with the flanges 51 and 71 overlapped with the flange 51 of the intake tower 5 being fastened together by bolts 8, and the connected portions are connected. At the center of the upward end portion of the cradle 1, the cradle 1 is provided in the cradle 1 by being rotatably inserted into a support cylinder 10 fixed with a diagonal member 9.
[0011]
In addition, the flange 41 of the relay pipe 4 is freely fitted to the joint 72 of the loose joint 7 so that the intake port protecting member 3 can freely rotate the support cylinder 10 with the support portion, and receive it. Even when the gantry 1 rotates at the time of installation and reaches the bottom of the sea, the intake tower 5 rises upward by changing the position upward due to the buoyancy of the intake tower 5.
[0012]
As shown in FIG. 3, the deep-sea water intake device having the above configuration is installed on the bottom of a deep sea layer of 200 m or more by suspending the cradle 1 from the ground to the sea, but the intake protection member 3 is freely rotatable. Since the intake tower 5 has buoyancy, the intake tower 5 naturally stands up after bottoming, and the intake 6 is located at a height (H) about 10 to 20 m away from the sea floor. become.
[0013]
In addition, since the intake tower 5 floats while swinging in the sea, it will be deformed by the tidal current, but its deformation amount (δ) will be until it touches the inner surface of the trumpet-shaped opening of the intake protection member 3, The intake tower 5 is supported by the contact to maintain the intake 6 at a predetermined height (H), and the support of the intake tower 5 by the curved surface of the inner surface of the opening makes it difficult for stress concentration to occur due to deformation due to tidal currents. Bending of the intake tower 5 is also prevented.
[0014]
The following table shows the predicted amount of deformation for each height of the water intake tower 5 (water intake).
However, bottom layer flow 50cm / sec (estimated)
Intake tower Rigid polyethylene pipe (tube diameter 30cm, wall thickness 22.4m / m)
[0015]
[Table 1]

[0016]
As described above, in the present invention, the buoyancy of the intake tower itself made of a light specific gravity material, and the intake port protecting member that is formed by bending the intake tower upward from the opening by bending the opening upward in a trumpet shape, Therefore, the intake port by the open end of the intake tower can be reliably set to a height of 10 to 20 m from the bottom of the sea, and the amount of deformation of the intake tower due to the tidal current is slight, and the deformation is also formed on a curved surface. Since it is supported by the inner surface of the opening, it is difficult for stress concentration in the intake tower to occur, the intake always rises to the set height and secures its position, and the bottom sediment is in the sea area containing fine particles. Even where the uplift is observed on the seabed, the inhalation of particles is prevented and only deep water can be taken.
[0017]
In addition, a water intake protection member is provided rotatably at the end of the cradle so that the opening bent in a trumpet shape by the buoyancy of the water intake tower faces upward. Since the stand stands up without being affected by the bottom state, posture control is not required when installing the cradle, and the structure is simple and only requires the provision of a water inlet protection member on the cradle. Is possible.
[Brief description of the drawings]
FIG. 1 is a side view of an embodiment of a deep sea water intake device having a floating intake according to the present invention.
FIG. 2 is a longitudinal sectional side view of the main part of the above.
FIG. 3 is an explanatory diagram showing an installation state on the sea bottom.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support stand 2 Water pipe 3 Water intake protection member 4 Relay pipe 5 Water intake tower 6 Water intake 7 Loose joint 8 Bolt 9 Diagonal material 10 Support cylinder

Claims (1)

A cradle with the intake at the tip of the water pipe facing upward on the bottom of the sea, a water intake protection member that is pivotally provided at the end of the cradle and connected to the water supply pipe, and from the opening of the water intake protection member to the sea It consists of a tubular intake tower drawn out for a long time and the intake opening at the open end of the intake tower,
A material with a light specific gravity that floats the intake tower protection member in a trumpet shape so that stress concentration does not occur against deformation due to tidal currents in the intake tower, and the intake tower floats in the sea A deep-sea water intake device with a floating intake, characterized in that the intake is formed higher than the bottom of the sea.

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