JP2000303511A - Ocean deep water intake device equipped with floating type intake port - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the suction of fine particles of bottom accumulated matter due to flying up by raising up a tubular intake tower being an intake port in a floated state in the sea, and to restrain the stress concentration of the intake tower caused by the deformation of an intake port protective meber due to the tide. SOLUTION: This ocean deep water intake device is made up of a receiving frame 1 for installing the intake port at the end of a feedwater pipe upward to the bottom surface of the sea, an intake port protective member 3 turnably provided to the end of the receiving frame and connected to a feedwater pipe 2, a tubular intake tower 5 extended long in the sea from the inside of opening of the intake port protective member 3, and an intake port 6 at the opening end of the intake tower 5. The opening part of the intake port protective member 3 is bent upward and formed in a bell shape to prevent the stress concentration of the intake port protective member caused by the deformation due to the tide. The intake tower 5 is formed with a material of light specific gravity being floated in the sea, and the intake port 6 is installed higher than the bottom surface of the sea.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deep ocean water intake device having a floating intake port which is installed on a deep sea floor to take deep water to the ground.

[0002]

SUMMARY OF THE INVENTION Deep sea water has a low water temperature, a great deal of plankton breeding that feeds on fish, and it is recognized that it contains medicinal ingredients. Attempts have been made to use them in applications.

[0003] In a usual deep sea water intake apparatus, an intake port is provided at a distance of about 3 to 5 m from the sea bottom so as not to suck in sediment on the sea bottom. In addition, because 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, soaring of particles has been observed,
Since the height can be as high as 10 to 20 m, there is a concern that the conventional apparatus may absorb particles. In addition, a huge structure is required to install the water intake at a position 10 to 20 m from the sea bottom, which raises economic problems.

The present invention has been conceived in view of the above circumstances, and an object of the present invention is to dispose a tubular intake tower adopted as an intake port in the sea in a floating state so that the position of the intake port can be adjusted from the sea bottom. Provided is a deep sea water intake device having a new floating intake that can be easily set at a height of 10 to 20 m and that can suppress stress concentration due to tidal current deformation of the intake tower by an intake protection member. It is in.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a receiving stand having a water inlet at a tip of a water pipe upwardly set on a sea bottom, and a rotatably provided end of the water receiving pipe connected to the water pipe. Water intake port protection member, a tubular water intake tower that is drawn into the sea long from the opening of the water intake port protection member, and a water intake by the open end of the water intake tower, with the opening of the water intake port protection member facing upward It is bent into a trumpet shape, so that stress concentration does not occur due to the deformation of the intake tower due to tidal current, and the intake tower is formed of light specific gravity material floating in the sea, and the intake port is higher than the sea bottom. It is to be installed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawing, reference numeral 1 denotes a cradle installed on the sea floor, which has a shape in which a hexagonal pyramid with a frame structure is laid down sideways, and a water pipe 2 and a cradle in the center of the cradle. A relay pipe 4 for connecting the intake port protection member 3 at the end is attached to both ends.

The intake port protecting member 3 is formed of a tube having one opening bent upward in a trumpet shape and a flange 31 integrally formed around the other opening, and has a required length from the inside of the trumpet opening. A tubular intake tower 5 is drawn out into the sea for a long time, and the opening end of the intake tower 5 is used as an intake port 6.

The intake tower 5 is made of a material having a low specific gravity floating in the sea, for example, a high-density hard polyethylene (specific gravity of 0.1%).
95) or the like, a plastic pipe having a length of 10 to 20 m, wherein a flange 51 is integrally formed at a base end portion, and the flange 51 is overlapped with the flange 31 of the water intake protecting member 3 so as to protect the intake port. It is inserted into the inside of the member 3 and the tip end side is drawn out to the outside from the opening expanded like a trumpet.

Reference numeral 7 denotes a hollow loose joint for connecting the intake port protecting member 3 and the relay pipe 4, and a flange 71 is integrally formed around an opening at a front end, and around a front end of the relay pipe 4 at a rear end. A joint 72 for rotatably holding the flange 41 is integrally formed.

The loose joint 7 and the intake port protecting member 3 are connected together by fastening the flanges 51 and 71, which are overlapped with the flange 51 of the intake tower 5 therebetween, with bolts 8, and are connected together. A support tube 10 having its installation portion fixed to the center of the upward end of the support base 1 with a diagonal member 9.
Is rotatably inserted into the inside of the cradle 1 and is provided on the receiving stand 1.

The joint 72 of the loose joint 7
, The flange 41 of the relay pipe 4 is rotatably loosely fitted, whereby the water inlet protecting member 3 freely rotates the support tube 10 with the support portion, and the receiving base 1 rotates at the time of installation. However, even if it is landed on the seabed, the position of the water intake tower 5 is changed upward by the buoyancy of the water intake tower 5 so that the water intake tower 5 rises upward.

As shown in FIG. 3, the deep sea water intake apparatus having the above structure is installed on the seabed of a deep sea layer of 200 m or more by suspending the gantry 1 from the ground to the sea. Has a rotational degree of freedom and the water intake tower 5 has buoyancy, so that the water intake tower 5 rises naturally after landing, and a height (H) of about 10 to 20 m away from the sea bottom.
The water inlet 6 is located at the position.

Since the water intake tower 5 floats while swinging in the sea, it is deformed by the tidal current. The amount of deformation (δ) of the water intake tower 5 is such that the water intake tower 5 comes into contact with the inside surface of the trumpet-shaped opening of the water intake protection member 3. The intake tower 5 is supported by the contact, the intake port 6 is maintained at a predetermined height (H), and the intake tower 5 is supported by the curved inner surface of the opening, so that stress concentration hardly occurs due to deformation due to tidal current. Become an intake tower 5
Is also prevented from being bent.

The following table shows the predicted deformation amount for each height of the tip (intake port) of the intake tower 5. However, bottom laminar flow 50 cm / sec (estimated) Intake tower Hard polyethylene pipe (tube diameter 30 cm, wall thickness 2
2.4m / m)

[0015]

[Table 1]

As described above, according to the present invention, the intake tower formed by using a material having a low specific gravity, the buoyancy of the intake tower itself, and the opening formed by bending the opening upward in a trumpet shape so that the intake tower is drawn out of the opening long. With the protection member, the water intake by the open end of the water intake tower can be reliably set at a height of 10 to 20 m from the sea bottom, and the deformation of the water intake tower due to the tidal current is small, and the deformation is also a curved surface. Since it is supported by the inner surface of the opening formed in the intake, stress concentration in the intake tower is also unlikely to occur, the intake always rises to the set height and secures its position, and in the sea area where the sediment contains fine particles, Even in a place where the soaring of particles due to the tidal current is observed on the sea floor, the inhalation of particles can be prevented and only deep water can be taken.

Further, the water intake port protecting member is rotatably provided at the end of the receiving stand so that the opening formed in a trumpet shape by the buoyancy of the water intake tower is directed upward, so that the water intake tower can be received by hanging. Since the stand stands on the upper side regardless of the landing state of the gantry, no attitude control is required when installing the gantry, and the structure is as simple as providing an intake port protecting member on the gantry, and the cost is low. It is possible to manufacture with.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of an ocean deep water intake device having a floating intake according to the present invention.

FIG. 2 is a vertical sectional side view of a main part of the above.

FIG. 3 is an explanatory diagram showing an installation state on the sea floor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving stand 2 Water pipe 3 Water inlet 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)

[Claims] 1. A receiving stand for installing an intake port at the tip of a water pipe upward on a sea bottom, an intake port protecting member rotatably provided at an end of the receiving table and connected to the water pipe, and an intake port protecting member. A water intake tower that is drawn out into the sea long from the opening of the water intake and the water intake formed by the open end of the water intake tower, the opening of the water intake protection member is formed upwardly in a trumpet shape, and the water intake is formed. Floating characterized by preventing stress concentration from occurring due to deformation due to the tidal current of the tower, and making the intake tower made of light specific gravity material floating in the sea and setting the intake port higher than the sea bottom Deep sea water intake system with a mold intake.