JP3677729B2 - Water intake device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water intake apparatus that is used when installed on the seabed and takes seawater on the ground.
[0002]
[Problems to be solved by the invention]
In the conventional seawater intake, the intake port 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. At the earth and sand ground where the sea bottom is relatively flat, use a pyramid-shaped cradle with a height of about 5m with a steel frame, and install a water intake pipe vertically on the top and install the water intake at the open end upward. doing.
[0003]
In addition, on an inclined surface such as a rock mass or rocky ground, as shown in FIG. 4, a water intake pipe 12 is attached to the center of a pyramid-shaped cradle 11 having a bottom width of at least 4 m from the top, and the cradle 11 Is placed horizontally on the inclined surface so that the bottom is located on the offshore side, and the water intake 13 is positioned about 2 m away from the inclined surface 14.
[0004]
By the way, on the seabed, there is a seabed where suspended mud stays at a height of about 20 m, or the bottom sediment contains fine particles, and particles rise up to 10-20 m by tidal current. In addition, since the ground is extremely soft and the conventional cradle with a steel frame has a small ground contact area, there are some seabeds where the water intake device sinks or slides down.
Keep the intake position so as not to inhale the sediment that floats on the seabed, and prevent it from sinking or sliding down, or prevent it from moving against external forces such as waves and ocean currents. The following items must be satisfied.
[0005]
(1) The water intake can be installed in an upright position as much as possible at a height of at least 30m above the sea floor.
▲ 2 ▼ Even if the ground is very soft, the cradle can be installed at the set height without sinking or sliding down.
(3) The cradle shall have a structure that can withstand external forces such as tidal currents and earthquakes and maintain the water intake at the set height without falling.
(4) The structure shall be suitable for deep laying by floating towing method and ray barge method, and can be easily laid.
[0006]
The present invention has been conceived from the above circumstances, and its object is to provide a half-tubular member that bends upward and holds a water intake pipe whose open end is a water intake, and a pedestal that functions as a sinking and slip-off preventing member. And it is providing the water intake apparatus of the new structure which can answer the said request with simple structure by adoption of a float etc.
[0007]
[Means for Solving the Problems]
The present invention according to the above object comprises a pedestal for preventing the sinking and sliding of the tip of the intake pipe, a fixing member located on the upper surface of the pedestal, and a holding member for the intake pipe provided on the fixing member. Is formed of a lower half pipe bent upward and an upper binding member.
Further, the present invention is such that the upper end portion of the holding member is formed into a trumpet shape by palm engagement with the split member, and is formed in the opening, and further, the opening end of the intake pipe serving as a water intake A float is attached to the pipe, and the intake pipe is maintained upright by the float.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In the figure, reference numeral 1 denotes a pedestal installed on the seabed, which is made of a rectangular shape in which flat steel and channel steel are stacked vertically and assembled in a lattice shape.
Reference numerals 2 and 2 are fixing members arranged in parallel at the center of the upper surface of the pedestal 1 with a required interval, and are made of a steel plate having an upper center formed in a semicircular recess.
Reference numeral 3 denotes a vertically long support material erected inwardly at the center of the end of the pedestal 1, which is made of a steel plate whose inner side is bent, and a wire for subsiding in a corner formed between the support material 3 and the pedestal upper surface. A locking part 5 is attached. Further, reinforcing steel plates 4 and 4 are provided on both sides of the support material 3.
[0009]
Reference numeral 6 denotes a holding member for the intake pipe 7. The inner surface of the intake pipe 7 is covered with a cushioning material such as rubber, and has an inner diameter for holding the intake pipe 7 in a fixed or semi-fixed shape. It consists of a split tube 6a and an upper binding material 6b. Further, the upper end portion of the lower half pipe 6a is an opening portion 8 that is widened in a trumpet shape due to palm engagement with the dividing member 6c.
[0010]
In the illustrated holding member 6, the lower half pipe 6 a is formed as a series up to the upper end forming the half of the trumpet-shaped opening 8, so that the intake pipe 7 can be forcibly bent with an allowable curvature radius. By bending the upper binding material 6b, 6b of the required number of half pipe pieces toward the water intake side at predetermined intervals, the water intake pipe 7 is bent upward in a quarter circle. And it can be semi-fixed.
[0011]
The upper binding material 6b is most preferably a split pipe piece as shown in the figure, but a commonly used binding material such as a band, round steel, or wire can also be used as the upper binding material 6b.
[0012]
On both sides of the open end of the intake pipe 7, floats 10, 10 are provided with flanges 9a. Thus, buoyancy is applied so that the position of the water intake 9 does not change more than a certain amount against an external force such as a flow, and the upright state is maintained.
[0013]
As shown in FIG. 3, the water intake device having such a configuration can be towed by hooking the suspension wire 15 to the wire locking portion 5. In addition, since the base 1 has a lattice shape and has a weight, seawater flows in the plane, the subsidence resistance is small, and the intake pipe 7 in an upright state becomes a rotational resistance due to the buoyancy by the floats 10 and 10. At the time of depth laying, the attitude of the entire apparatus is maintained, and the apparatus can be laid down as set and the water intake 9 can be installed at a high distance from the sea floor 14.
[0014]
Further, as shown in the drawing, the water intake 9 is maintained in an upright state by the floats 10 and 10 higher than the floating mud belt 16, so that the seawater 17 not containing the floating mud can be taken in. Even if it floats while swinging in the sea, the rising portion of the intake pipe 7 is held vertically by the buoyancy of the float 10, and the intake pipe 7 is brought into contact with the inner surface of the trumpet-shaped opening 8. The intake 9 is maintained within the set range, and the bending of the intake pipe 7 is prevented by the support by the curved surface of the inner surface of the opening.
[0015]
Furthermore, the pedestal 1 is formed in a grid shape with a steel material such as flat steel or grooved steel, so that the installation area is large, so that it does not easily fall over due to external forces such as tidal currents and earthquakes, and the sea floor is extremely soft ground. No slipping occurs, and slipping resistance is generated by the lattice even on the inclined surface, so that the posture can be maintained.
[0016]
Therefore, the normal setting state is always maintained regardless of the state of the bottom of the sea, the suction of floating mud and flying particles is prevented, and the seawater 17 that does not contain floating mud can be constantly taken. In addition, it is simple because the holding pipe 6 is formed on the pedestal 1 and the intake pipe 7 is bent upward and fixed or semi-fixed, so that it is simple and can be manufactured at low cost.
[Brief description of the drawings]
FIG. 1 is a side view of a seawater intake device according to the present invention.
2 is a cross-sectional view along line AA in FIG. 1 (A) and a cross-sectional view along line BB (B).
FIG. 3 is an explanatory diagram showing an installation state on an inclined sea bottom.
FIG. 4 is an explanatory view showing an installation state of a conventional water intake device on an inclined sea bottom.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pedestal 2 Fixing material 3 Vertical material 4 Reinforcement material 5 Wire locking part 6 for sagging Holding member 6a Lower half pipe 6b Upper half pipe 6c Dividing member 7 for opening formation Water intake pipe 8 Trumpet-shaped opening 9 Water intake port 9a Flange 10 Float 15 Suspension wire 16 Floating mud zone 17 Seawater not containing floating mud

Claims (3)

It consists of a pedestal that prevents the tip of the intake pipe from sinking and slipping, a fixing material located on the upper surface of the pedestal, and a holding member for the intake pipe provided on the fixing material, and the holding member is bent upward A water intake device formed of a half pipe and an upper binding member. The water intake apparatus according to claim 1, wherein the upper end portion of the holding member is formed into an opening by expanding into a trumpet shape by means of a split member. 2. A water intake apparatus according to claim 1, wherein a float is attached to an opening end portion serving as a water intake of the water intake pipe, and the water intake pipe is maintained in an upright state by the float.

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