JP2001107401A - Intake device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intake device capable of always making the intake of seawater containing none of suspended sludge by adopting a half pipe member curvedly holding an intake pipe upward and a pedestal and floats or the like preventing the settling and sliding-down thereof. SOLUTION: An intake device is constituted of a pedestal 1 preventing the front end of an intake pipe from being settled and slid down, fixed members 2 located on the upper surface of the pedestal 1 and a holding member 6 of the intake pipe 7 provided to the fixed members 2. The holding member 6 is formed of lower half-pipes 6a curved upward and upper fastening members 6b. The upper end of the holding member 6 is widely opened in the shape of a bugle by joining the upper end thereof with a divided member 6c to form an opening 8. Floats 10 are mounted to the open end 9 of the intake pipe 7 as an intake. The intake pipe 7 is maintained in an upright state by the floats 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water intake device which is installed on the sea floor and used when seawater is taken in on the ground.

[0002]

In the conventional seawater intake, an intake is provided at a position about 3 to 5 m away from the sea bottom so as not to inhale sediment on the sea bottom. In the place where the sea bottom is relatively flat and the ground is sandy, a pyramid-shaped cradle with a steel frame of about 5m in height is used, and a water intake pipe is installed vertically on the top, and the water intake by the open end is set upward. are doing.

On an inclined surface such as rock mass and rocky rock ground, FIG.
As shown in the figure, a water intake pipe 12 is attached downward from the top at the center of a pyramid-shaped cradle 11 having a bottom width of at least 4 m, and the cradle 11 is laid on an inclined surface such that the bottom is located offshore. It is installed so that the water intake 13 is located about 2 m away from the inclined surface 14.

[0004] By the way, on the seabed, there are some seabeds in which floating mud stays at a height of about 20 m, and in which the sediment contains fine particles and particles rise up to a height of 10 to 20 m due to tidal currents. In addition, because the ground is extremely soft, and the conventional mounting base made of steel frame has a small ground contact area, there are some seabeds where the intake device sinks or slides down. Maintain the intake position so that the floating sediment does not inhale the floating sediment on the seabed, do not sink or slide down, and do not move against external forces such as waves and ocean currents Must satisfy the following items.

[0005] The intake can be installed upright as much as possible so that the intake is located at least 30m above the sea floor. Even on very soft ground, the cradle does not sink or slide down,
The intake can be installed at the set height, the cradle must be able to withstand external forces such as tidal currents and earthquakes, and be constructed to maintain the intake at the set height without falling over. The structure must be suitable for laying in depth and can be easily laid down.

The present invention has been conceived in view of the above circumstances, and has as its object to provide a half-split tubular member having an open end curved upward to hold an intake pipe serving as an intake port, and a subsidence and slip-off prevention member. An object of the present invention is to provide a water intake device having a new structure capable of meeting the above-mentioned demands with a simple structure by employing a pedestal that acts and a float or the like.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a pedestal for preventing sinking and sliding of a tip end of an intake pipe, a fixing member located on an upper surface of the pedestal, and a water intake pipe provided on the fixing material. It comprises a holding member, and the holding member is formed by an upwardly curved lower half tube and an upper binding member. Further, the present invention is characterized in that the upper end of the holding member is formed in an opening by expanding the upper end of the holding member into a trumpet shape by palming with the dividing member, and furthermore, the opening end of the water intake pipe serving as a water intake. A float is attached to the intake pipe, and the intake pipe is maintained upright by the float.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawing, reference numeral 1 denotes a pedestal installed on the sea floor, which is a rectangular one in which flat steel or channel steel is vertically stacked and assembled in a grid. Reference numerals 2 and 2 denote fixing members arranged in parallel at the center of the upper surface of the pedestal 1 at 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 member inwardly standing at the center of the end of the pedestal 1, made of a steel plate having a curved inner side, and a wire for sinking at a corner formed between the support member 3 and the upper surface of the pedestal. The locking part 5 is attached. Steel plates 4 and 4 for reinforcement are provided on both sides of the support member 3.

Reference numeral 6 denotes a holding member for the water intake pipe 7, which has an inner surface coated with a buffer material such as rubber, and has an inner diameter for holding the water intake pipe 7 in a fixed or semi-fixed state. The lower half pipe 6a and the upper binding material 6b. The upper end of the lower half tube 6a is formed as an opening 8 which is formed in a trumpet shape by palming with the dividing member 6c.

In the holding member 6 shown in the figure, the lower half pipe 6a is formed as a series up to the upper end forming the half of the trumpet-shaped opening 8, and the intake pipe 7 can be forcibly bent at an allowable radius of curvature. The intake pipe 7 is formed into a curved shape at a possible curvature, and the required number of half tie pipe pieces 6b, 6b are sequentially bolted at predetermined intervals toward the intake port side, thereby reducing the intake pipe 7 to 1/4.
It can be bent upward and semi-fixed in a circular shape.

The upper binding material 6b is most preferably a half-split pipe piece as shown in the figure, but a commonly used binding material such as a band-shaped band, round steel, or wire is used as the upper binding material 6b.
It can also be used as b.

On both sides of the open end of the water intake pipe 7, floats 10, 10 are mounted with flanges 9a. Thus, buoyancy is applied so that the position of the water intake 9 does not change more than a certain value with respect to an external force such as a flow, and the upright state is maintained.

The intake device having such a structure is shown in FIG.
As shown in the figure, the suspension wire 15 can be hooked to the wire locking portion 5 and towed. In addition, the pedestal 1 has a lattice-like weight, has a low sinking resistance due to the flow of seawater in the plane, and the intake pipe 7 in an upright state due to the buoyancy of the floats 10 and 10 has a rotational resistance. Even when the apparatus is laid at a depth, the attitude of the entire apparatus is maintained, and the apparatus can be sunk as set and the water intake 9 can be installed at a high distance from the sea bottom 14.

As shown in the drawing, the water intake 9 is maintained upright by the floats 10 and 10 higher than the floating mud strip 16, so that seawater 17 containing no floating mud can be taken in. Even if the water floats while oscillating in the sea due to the tide, the rising portion of the water intake pipe 7 is held vertically by the buoyancy of the float 10, and it comes into contact with the inner surface of the trumpet-shaped opening 8. The intake pipe 7 is supported to maintain the intake port 9 within the set range, and the curved inner surface of the opening also prevents the intake pipe 7 from being bent.

Further, the pedestal 1 is formed in a lattice shape from steel material such as flat steel or grooved steel so as to have a large installation area, so that it is difficult for the pedestal 1 to fall down due to an external force such as a tidal current or an earthquake, and the sea bottom is extremely soft ground. However, the sliding resistance does not occur even on the inclined surface due to the grid even on the inclined surface, so that the posture can be maintained.

Therefore, the normal setting state is always maintained irrespective of the state of the sea bottom, the suction of floating mud and soaring particles is prevented, and the seawater 17 free of floating mud can be constantly taken. Also, structurally, it is only necessary to form the water intake pipe 7 upwardly with the holding member 6 on the pedestal 1 and to fix or semi-fix the intake pipe 7, so that it is simple, and it is possible to manufacture at low cost.

[Brief description of the drawings]

FIG. 1 is a side view of a seawater intake device according to the present invention.

FIG. 2 is a cross-sectional view (A) along the line AA and a cross-sectional view (B) along the line BB in FIG. 1;

FIG. 3 is an explanatory diagram showing a state of installation on an inclined sea floor.

FIG. 4 is an explanatory view showing a state in which a conventional intake device is installed on an inclined sea bottom.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pedestal 2 Fixing material 3 Vertical material 4 Reinforcement material 5 Wire anchoring part for laying 6 Holding member 6a Lower half pipe 6b Upper half pipe 6c Dividing member for forming opening 7 Water intake pipe 8 Trump-shaped opening 9 Intake 9a Flange 10 Float 15 Suspension wire 16 Floating mud 17 Seawater not containing mud

Claims (3)

[Claims] 1. A pedestal for preventing sinking and sliding down of an intake pipe tip portion, a fixing member located on an upper surface of the pedestal, and an intake pipe holding member provided on the fixing material. An intake device comprising an upper curved lower half tube and an upper binding member. 2. The water intake device according to claim 1, wherein an upper end portion of the holding member is formed into an opening by expanding the upper end portion into a trumpet shape by the engagement with the dividing member. 3. The water intake device according to claim 1, wherein a float is attached to an opening end of the water intake tube serving as a water intake, and the water intake tube is maintained upright by the float.