JP4629865B2 - Installation method of deep water intake pipe - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an installation method of a deep water intake pipe and a deep water intake ship for easily taking deep water.
[0002]
[Problems to be solved by the invention]
Seawater, called so-called deep water, located at a depth of 200 m or more in the ocean contains abundant minerals. For this reason, utilization in the food field, the medical field, and various industrial fields has been actively studied in recent years. Various methods of water intake have been studied, but because the water is taken from a deep place of 200m or more under intense environments such as waves and tides, the facilities become excessive and the operability is bad. There are problems with profitability, and it is difficult to use in a wide range of fields.
[0003]
Among them, there are several methods of taking water today, but fixed-point water intake from land and fixed-point water intake using buoy-type floating boats are all required, and large-scale equipment is required. Yes.
[0004]
On the other hand, water intake from a ship that is easy to move is also being studied. Conventionally, the suspension method has been established for sending objects to the seabed, but there are the following problems when installing a deep water intake pipe by the suspension method. First, the intake pipe of a predetermined length is carried to the intake position and suspended from the intake ship. Since the deep water intake pipe is required to be at least 200 m long, a very large ship and a large crane are required. Equipment is required and is not practical. Therefore, instead of carrying the intake pipe of a predetermined length, it is thrown into the sea while sequentially connecting relatively short pipes on the ship at the intake place, and finally the intake pipe of the predetermined length is formed. The method is deemed more promising.
[0005]
However, even when throwing them into the sea while connecting them one after another, the conventional suspension method is very troublesome. That is, the pipe must be lifted vertically and positioned, one end of which is connected to the intake pipe being formed, and the operation of feeding the intake pipe into the water for the length of the pipe must be repeated several tens of times at a time. It was very inefficient. In addition, there is a problem that a large and expensive facility is required to accurately position the pipe by lifting it vertically or to accurately feed the pipe by the length of the pipe while hanging.
[0006]
Therefore, in view of the above-described problems of the prior art, the present inventors implement a method for efficiently installing a deep water intake pipe in a short time without requiring a large and expensive facility, and this installation method. As a result of intensive studies on a deep water intake vessel that is convenient for this purpose, the present invention has been achieved.
[0007]
[Means for Solving the Problems]
The gist of the method of installing the deep water intake pipe according to the present invention is to form a deep water intake pipe by sequentially connecting a large number of pipes and suspending it from the deep water intake ship in the water. The pipe is connected in a horizontal direction on the deep water intake vessel, and the extension of the deep water intake pipe extended by the pipe connection is sequentially pushed out of the deep water intake vessel and stays near the water surface. After the deep water intake pipe reaches the specified length, the intake pipe side of the deep water intake pipe is locked to the intake pipe attachment part of the deep water intake ship, and this intake pipe attachment part is used as a shaft. The deep water intake pipe is submerged in the water by rotating like a pendulum with the tip end connected to the recovery wire as the head, and the deep water intake pipe is suspended substantially vertically from the deep water intake ship.
[0008]
Further, another aspect of the method of installing the deep water intake pipe according to the present invention is to form a deep water intake pipe by sequentially connecting a number of pipes, and suspend this from the deep water intake ship in the water. The pipe is connected in a substantially horizontal direction on the work boat, and the extension of the deep water intake pipe that has been extended by the pipe connection is sequentially applied, starting from the end of the intake pump. After pushing out of the work boat and staying near the surface of the water, the deep water intake pipe reaches the specified length, and then the intake pump side end of the deep water intake pipe is locked to the intake pipe attachment part of the deep water intake ship However, with this intake pipe attachment part as the axis, with the tip connected to the recovery wire connected to the top, it rotates like a pendulum to sink the deep water intake pipe into the water, and the deep water intake pipe becomes the deep water intake ship. There is to hang from the almost vertical.
The pipe is connected on the deep water intake ship.
[0009]
Furthermore, in the installation method of these deep water intake pipes, the retention of the extension of the deep water intake pipe near the water surface is performed by locking the free end of this extension to the floating ship. .
[0010]
Furthermore, in these installation methods of deep water intake pipes, the retention of the extension of the deep water intake pipes near the water surface is performed by emptying the deep water intake pipes.
[0011]
Furthermore, in these deep water intake pipe installation methods, the tip of the deep water intake pipe is provided with a weight that can be removed remotely.
[0012]
Further, the gist of the deep water intake vessel according to the present invention includes a water storage tank, a water intake pump, and a water intake pipe attaching portion for locking the water pump side end of the deep water intake water pipe. This locking at the mounting part is that it can be rotated in the vertical direction.
[0013]
Further, the deep water intake ship is a catamaran ship, and the intake pipe attaching part is provided at a position straddling between the two torso parts.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, a method for installing a deep water intake pipe and an embodiment of a deep water intake ship according to the present invention will be described in detail based on the drawings.
[0015]
FIG. 1 is an explanatory view schematically showing an example of a deep water intake pipe installation method according to the present invention. In this example, two boats, a deep water intake vessel 10 and a floating vessel 16 are used. On the deep water intake vessel 10, the pipes stored in the stock place 22 are sequentially arranged in a substantially horizontal direction at the connection work place 20. The operation of extending the deep water intake pipe 12 is performed. Then, a part of the deep water intake pipe 12 is sequentially pushed out of the ship by the amount of the pipe connected and extended. On the other hand, the floating ship 16 locks the free end of the extruded deep water intake pipe 12 to prevent it from sinking into the water. For this reason, both ends of the deep water intake pipe 12 are locked by the deep water intake ship 10 and the floating ship 16, and the deep water intake pipe 12 is not submerged in water but is retained near the water surface.
[0016]
As the deep water intake pipe 12 becomes longer, the floating ship 16 gradually moves away from the deep water intake water ship 10 together with the tip of the deep water intake water pipe 12, and stops when the deep water intake pipe 12 reaches a predetermined length. Then, the intake pump side end 32 of the deep water intake pipe 12 is locked to the intake pipe attaching part 18 of the deep water intake ship 10, and a weight 30 is attached to the tip 34 of the deep water intake pipe 12 on the floating ship 16. And the recovery wire 28 are connected and thrown into the water. The deep water intake pipe 12 sinks into the water in an arc like a pendulum, with the intake pipe attachment portion 18 as an axis and the tip 34 as the head. Eventually, the tip 34 reaches just below the intake pipe attachment 18, and the deep water intake pipe 12 becomes vertical and is suspended from the deep water intake ship 10. Since the weight 30 is attached to the distal end portion 34, it does not move so much even when subjected to waves or tides.
[0017]
The recovery wire 28 is for lifting and recovering the used deep water intake pipe 12. Therefore, one end must be left on the float 16. Since the recovery wire 28 is drawn into the water as the tip end portion 34 sinks, the recovery wire 28 is fed out of the floating ship 16 in accordance with the speed at which the deep water intake pipe 12 sinks. Conversely, the settling speed of the deep water intake pipe 12 can be controlled by adjusting the feeding speed of the recovery wire 28. When the recovery wire 28 is paid out, the floating ship 16 is pulled by the recovery wire 28 and receives a force attracted to the deep water intake ship 10.
[0018]
In the above description, as the deep water intake pipe 12 is connected for a long time, the floating ship 16 moves and moves away from the deep water intake ship 10. However, the deep water intake vessel 10 may move backward by moving in the direction opposite to the direction in which the deep water intake pipe 12 is pushed out while the floating vessel 16 is stopped. Since it can be interlocked with the operation of pushing the deep water intake pipe 12 out of the ship, the moving speed can be easily adjusted.
[0019]
The deep water intake vessel 10 is provided with an intake pump 24 and a water storage tank 26. When the installation work for suspending the deep water intake pipe 12 from the deep water intake ship 10 is finished and the intake pump 24 is connected to the intake pump side end 32 of the deep water intake pipe 12, the intake operation can be immediately started.
[0020]
The water intake pump 24 is operated to start water intake, and the water storage tank 26 is filled to stop water intake. During this time, the floating ship 16 may remain at the position where the installation work has been performed, or the collecting wire 28 may be temporarily deposited in the deep water intake ship 10 and acted freely at another place.
[0021]
The collection operation of the deep water intake pipe 12 after the completion of the intake operation is performed in the reverse procedure of the installation operation described above. That is, first, the connection between the rear end portion 32 and the pipe to the water intake pump 24 is disconnected. Next, the recovery wire 28 is wound up by the floating ship 16, or the floating ship 16 is moved away from the deep water intake water ship 10, and the distal end portion 34 of the deep water intake pipe 12 is slanted via the recovery wire 28. Pull upward. Then, the deep water intake pipe 12 rotates around the intake pipe attachment portion 18 and eventually lies down near the water surface and is pulled up. Then, while drawing the deep water intake pipe 12 onto the deep water intake ship 10, the pipes are sequentially removed and stored in the stock location 22. Finally, the floating ship 16 itself as well as the recovery wire 28 and the weight 30 may be accommodated in the deep water intake ship 10.
[0022]
Although not shown in the drawing, the deep water intake vessel 10 is used to push out and collect various lifts and transfer machines used for pipe connection work and the deep water intake pipe 12 outside the ship. A crane or the like is provided, and a winch for collecting the weight 30 may be provided. Further, the floating boat 16 is provided with a locking tool for the distal end portion 34 of the deep water intake pipe 12, a device for attaching the weight 30 to the distal end portion 34, a winch for the recovery wire 28, and the like.
[0023]
As shown in FIG. 2, flanges 38 are provided at both ends of the pipe 14, and the pipe 14 is connected by aligning the flanges 38 with the packing 36 interposed therebetween and joining them using bolts and nuts. . The packing 36 is made of an elastic body such as rubber, and serves as a cushion material for withstanding the bending stress applied to the deep water intake pipe 12 during work or use as well as water-tight joining.
[0024]
The intake pipe attaching part 18 is engaged with the intake pump side end 32 of the deep water intake pipe 12 so as to freely rotate in the vertical direction. For this reason, the deep water intake pipe 12 staying horizontally near the water surface can sink into the water while drawing an arc around the intake pipe attachment portion 18 and can be suspended vertically from the deep water intake ship 10. become.
[0025]
FIG. 3 shows an example of the intake pipe mounting portion 18, and a U-shaped bearing portion 42 is provided. If the rod-like projections 40 provided on both sides of the intake pump side end portion 32 of the deep water intake pipe 12 are received by the bearing portion 42, the intake pump side end portion 32 can freely rotate along the vertical plane. The intake pump side end 32 is L-shaped, and the opening 44 is provided with a flange 39 to be connected to the pipe to the intake pump 24. When the deep water intake pipe 12 is horizontal, the flange 39 faces downward, and when the deep water intake pipe 12 rotates 90 ° and becomes vertical, the flange 39 faces horizontal and is connected to the pipe to the intake pump 24. Connection becomes easy.
[0026]
In the embodiment illustrated in FIG. 1, the pipe 14 is connected on the deep water intake vessel 10. In the deep water sampling performed at a location far from the land, it is important to reduce the transportation cost, and the large deep water intake vessel 10 having the large water tank 26 is advantageous. For this reason, if the connection work of the pipe 14 is performed on the deep water intake vessel 10, there is an advantage that a considerably large work space can be secured.
[0027]
However, the present invention is not limited to connecting the pipe 14 on the deep water intake vessel 10. In the example of the installation method of the deep water intake pipe 12 shown in FIG. 4, the stock place 22 of the pipe 14 and the connection work place 20 are provided in the work ship 17. Are pushed out sequentially. Then, the deep water intake vessel 10 in which the intake pump side end 32 of the deep water intake pipe 12 is locked to the intake pipe attachment portion 18 moves by pulling the extruded deep water intake pipe 12. The installation work after the deep water intake pipe 12 is extended to a predetermined length is performed in the same procedure as the example shown in FIG. In the installation method of this example, the work boat 17 can be made larger than the deep water intake vessel 10 to play a role as a mother ship in whaling.
[0028]
The material of the pipe 14 is not particularly limited. Strength and corrosivity are very important in relation to durability, but the weight that must be considered especially in practical use is weight. One of the features of the present invention is that the deep water intake pipe 12 is retained near the water surface until it reaches a predetermined length. Therefore, if the deep water intake pipe 12 is too heavy, it is very difficult to stay near the water surface, and the pulling operation for collecting the deep water intake pipe 12 becomes difficult. On the other hand, if it is too light, the deep water intake pipe 12 cannot be quickly settled down, and it becomes susceptible to the influence of tidal currents and becomes unstable, which is not preferable.
[0029]
For this reason, the average apparent specific gravity of the deep water intake pipe 12 is preferably about 1 to 3, and particularly preferably about 1 to 1.5. The meaning of average is not necessarily limited to the apparent specific gravity of each pipe 14, but assumes a unit in which several pipes 14 of different materials and configurations are connected, and the apparent specific gravity of each unit. It is pointed to be evaluated in.
[0030]
In order to satisfy the specific gravity in the above preferred range, for example, a plastic such as vinyl chloride or a light metal such as aluminum is used alone. Further, a metal such as iron or aluminum and a lightweight plastic such as polyethylene, foamed plastic, or wood are used in combination. Alternatively, plastic or metal may be molded into a hollow double tube and used.
[0031]
An excellent device for retaining the deep water intake pipe 12 near the water surface is to use the buoyancy by emptying the deep water intake pipe 12. If the tip 34 of the deep water intake pipe 12 is lifted and locked onto the floating ship 16, seawater or the like does not enter the deep water intake pipe 12, so that sufficient buoyancy can be obtained. For this reason, even the somewhat heavy deep water intake pipe 12 can be easily retained near the water surface. And if the front-end | tip part 34 is put in water, seawater etc. will approach into the deep-layer water intake pipe 12, a buoyancy will be reduced, and even if it does not mount | wear with the weight 30, it will settle at sufficient speed.
[0032]
Even if the distal end portion 34 of the deep water intake pipe 12 is not locked on the floating ship 16, entry of seawater or the like can be prevented by closing the opening portion of the distal end portion 34 with a lid or the like. In the example shown in FIG. 5, a lid 46 is attached to the flange 38 of the distal end portion 34 via a packing 36 to close the opening in a watertight manner.
[0033]
Thus, if the deep water intake pipe 12 itself can float on the water surface, it is not always necessary to lock the tip 34 to the floating ship 16. When the distal end portion 34 is closed with a lid 46 and the pipe 14 is sequentially connected and pushed out from the deep water intake vessel 10 and the deep water intake pipe 12 is set to a predetermined length and is submerged in the water, the lid 46 May be opened to allow seawater or the like to enter the deep water intake pipe 12. The operation of opening the lid 46 can be performed remotely from the deep water intake vessel 10, or can be performed manually by bringing the floating vessel 16 closer. When only the buoyancy of the deep water intake pipe 12 itself is insufficient, a float such as an air bag may be used as an auxiliary.
[0034]
The lower the center of gravity of the deep water intake pipe 12 suspended from the deep water intake ship 10, the less the vibration caused by waves and tidal currents, and the less the fluctuation of the intake position. For this reason, it is preferable to attach the weight 30 to the distal end portion 34 or make the pipe 14 constituting the lower part of the deep water intake pipe 12 particularly heavy. More preferably, the weight 30 is removed from the deep water intake pipe 12 before recovery so that the deep water intake pipe 12 can be easily recovered. Although it can be performed by a mechanical operation, it is preferable to remove the weight 30 at a position deeper than 200 m by an electrical operation. Specifically, an electromagnet or a small motor is arranged in the vicinity of the weight 30 and a mechanism for separating them by these operations is adopted. The removed weight 30 is a wire different from the recovery wire 28 for pulling up the deep water intake pipe 12, and is recovered using a winch or the like.
[0035]
The deep water intake pipe 12 receives various large deformation stresses during installation work and recovery work or during water intake. Therefore, in the event of an accident in which the pipe 14 is damaged or the pipes 14 are disconnected, a holding wire that connects the pipes 14 and prevents them from falling off may be provided. FIG. 6 shows an example of the pipe 14 when the holding wire is used. That is, a pin 54 is inserted into one of the bolt holes 48 of the flange 38, and a pair of holding wire support fittings 50 are provided that rotate freely around the pin 54 as an axis. Further, each holding wire support fitting 50 is provided with a recess 52 for fitting the holding wire. Therefore, if the holding wire is sandwiched between these holding wire support fittings 50 and closed, the retaining holes 56 provided at the respective distal end portions of the holding wire support fitting 50 are overlapped, and tightened with a nut through a bolt, the holding wire becomes the pipe 14. It is connected with certainty. In the process of sequentially connecting the pipes 14 to form the deep water intake pipe 12 having a predetermined length, if the holding wire is connected to the pipes 14 in succession, all the pipes 14 to be constructed will eventually become one. Connected by holding wire.
[0036]
In addition, it is also important to devise a method for preventing the deep water intake pipe 12 from being damaged by the deep water intake vessel 10 being swung from front to back, right and left or up and down. For example, it is effective to make a part of the deep water intake pipe 12 or the intake pipe 68 flexible by making it rubber or bellows. Alternatively, it is more effective if the connection between the deep water intake pipe 12 and the intake pipe 68 is removed so that both can move freely.
[0037]
FIG. 7 and FIG. 8 show an example, and the intake pump side end 32 of the deep water intake pipe 12 has a wide opening, and an intake pipe 68 is inserted loosely therein. The intake pump side end 32 includes an annular upper member 321 and a funnel-shaped lower member 322, and is provided on front and rear side surfaces of the lower member 322 in front and rear holes 45 provided in the upper member 321. The rod-shaped protrusion 41 is inserted so that both are connected. Therefore, the lower member 322 can freely rotate left and right around the rod-like protrusion 41. Further, bar-like protrusions 40 are also provided on the left and right of the upper member 321 and are received by a U-shaped bearing part 42 (omitted in the figure) of the intake pipe attaching part 18 (omitted in the figure), so that the bar-like protrusion 40 is pivoted. Thus, it can be freely rotated back and forth.
[0038]
According to the method of connecting the deep water intake pipe 12 of this example, the left and right shaking of the deep water intake ship 10 is absorbed by the rotation about the rod-shaped protrusion 41, and the forward and backward vibration is absorbed by the rotation about the rod-shaped protrusion 40. The up and down vibration can be absorbed by the space opened in the U shape of the bearing portion 42. Therefore, the shaking of the deep water intake ship 10 is hardly transmitted directly to the deep water intake pipe 12, and the deep water intake pipe 12 is not deformed or damaged.
[0039]
In the method of installing the deep water intake pipe according to the present invention, the existing ship can be modified or supplemented with necessary equipment and used as the deep water intake ship 10. However, if the deep water intake vessel 10 that can easily carry out the present invention is specially constructed, it is possible to increase the water storage capacity or to widen the stock place 22 and the connection work place 20 of the pipe 14, thereby further improving the efficiency. Deep water intake is possible. The deep water intake vessel 10 includes a water storage tank 26, an intake pump 24, and an intake pipe attachment 18 that locks the intake pump side end 32 of the deep water intake pipe 12 in a vertically rotatable manner. Must be prepared in advance.
[0040]
FIG. 9 to FIG. 11 show an example of a particularly useful catamaran relating to the deep water intake ship of the present invention, and shows a state where the deep water intake pipe has been installed and the water intake operation is in progress. The deep water intake vessel 11 has a structure in which two trunk portions 58 are connected to each other by an upper deck 64 and a bottom deck 66 at a front portion thereof, and a rear portion thereof is connected by a rod 60. The eaves 60 is also used as a scaffold for suspending a lift used for installing and collecting the deep water intake pipe 12 and performing various monitoring operations. Each of the body portions 58 is provided with a water storage tank 26, and a water intake pipe attachment portion 18 and a water intake pump 24 are provided at a position straddling between the body portions 58. Then, the intake pump side end 32 of the deep water intake pipe 12 locked to the intake pipe attachment portion 18 and the intake pump 24 are connected by an intake pipe 68, and the deep water collected through the deep water intake pipe 12 is The water is taken from the intake pump 24 to the water storage tank 26.
[0041]
The intake pipe mounting part 18 formed by projecting the side part of the body part 58 between the body parts 58 is provided with U-shaped bearing parts 42 on both the left and right sides. The entire deep water intake pipe 12 is supported only by the bearing portion 42 receiving the rod-shaped protrusion 40 provided at the intake pump side end 32 of the deep water intake ship 10. Therefore, at the stage of installing the deep water intake pipe 12 before the intake pump side end 32 and the intake pipe 68 are connected, the deep water intake pipe 12 can be freely moved like a pendulum with the rod-shaped protrusion 40 as an axis. Can rotate.
[0042]
According to the deep water intake vessel 10, since the intake pipe attachment portion 18 is provided between the two trunk portions 58, a wide working space can be secured on both sides of the intake pipe attachment portion 18, and the deep water intake pipe 12 is installed. And the work involved in recovery can be done quickly and safely. Moreover, since the intake pipe attachment part 18 can be provided at a low position near the water surface, the height difference with the deep water intake pipe 12 when staying near the water surface is small, and the deep water intake pipe 12 is almost bent. No longer occurs.
[0043]
As described above, the deep water intake pipe installation method and the deep water intake ship according to the present invention have been described in detail. However, the present invention is not limited to the above cited / illustrated examples, and the pipe material, shape, connection method, deep water Various improvements and modifications to the means for retaining the intake pipe near the surface of the water, the means for controlling the sinking, floating, and suspended state of the deep water intake pipe, and the structure of the deep water intake ship are within the scope of the present invention. , Can be implemented in a modified manner.
[0044]
【The invention's effect】
According to the deep water intake pipe installation method according to the present invention, pipes are connected on a ship to form a long deep water intake pipe, so that the transportation cost of the deep water intake pipe to the intake site is greatly reduced. In addition, since the pipes are connected in a substantially horizontal direction, the work is facilitated, the work efficiency is remarkably improved, and the equipment cost is reduced by reducing the size of the lift and the transfer machine. In addition, since the deep water intake pipe retained near the water surface is shaken like a pendulum and submerged at a stretch, the deep water intake pipe can be installed in a very short time.
[0045]
Moreover, according to the installation method of the deep water intake pipe concerning this invention, since a deep water intake pipe is suspended from a deep water intake ship, a water intake place can be moved freely. For this reason, it is possible to always select the optimum place and take water while confirming the information of the water intake place by attaching a lighting device or a camera to the tip of the deep water intake pipe.
[0046]
In particular, by connecting the pipes on the deep water intake vessel, a wide space for connection work can be ensured and the connection can be made safely and quickly.
[0047]
In particular, by locking one end of the deep water intake pipe to the ship when it is staying near the water surface, it is possible to stay more securely near the water surface, and to match the speed at which the deep water intake pipe is extended. Then, one end can be pulled and moved.
[0048]
Further, by emptying the deep water intake pipe when staying near the water surface, buoyancy is generated and the water stays more reliably near the water surface.
[0049]
In addition, by attaching a weight that can be removed by remote control to the tip of the deep water intake pipe, the water movement of the deep water intake pipe can be suppressed during water intake, and the weight can be removed and lightened during recovery. .
[0050]
Moreover, according to the deep water intake ship concerning this invention, since it has the intake pipe attachment part which can lock the intake pump side edge part of a deep water intake pipe freely in the vertical direction, it stays near the water surface. The deep water intake pipe can be rotated like a pendulum and submerged at a stretch.
[0051]
And in particular, if it is a catamaran, and it is a deep water intake vessel provided with intake pipe attachment parts in a position straddling between both trunk parts, it is possible to secure a wide working space on both sides of the intake pipe attachment parts. This makes it easy to install and collect deep water intake pipes. Moreover, the intake pipe attachment part is provided low near the water surface, and the difference in height from the deep water intake pipe when it is staying near the water surface can be reduced so that the deep water intake pipe is not bent.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an example of a deep water intake pipe installation method according to the present invention.
FIG. 2 is a side view showing an example of a pipe connection method according to the present invention.
FIG. 3 is a side view schematically showing an example of a water intake pipe attachment portion according to the present invention.
FIG. 4 is a schematic view showing another example of a method for installing a deep water intake pipe according to the present invention.
FIG. 5 is a side view showing an example of a closed tip portion of a deep water intake pipe according to the present invention.
FIG. 6 is a cross-sectional view showing an example of a flange portion of a pipe according to the present invention, in which the pipe is cut and viewed from the cut surface.
FIG. 7 is a vertical side view showing an example of how to connect the deep water intake pipe and the intake pipe according to the present invention.
8 is a perspective view showing a part of the deep water intake pipe shown in FIG. 7 according to the present invention.
FIG. 9 is a plan view showing an example of a deep water intake ship according to the present invention.
FIG. 10 is a front view of the deep water intake ship shown in FIG. 7 according to the present invention.
11 is a side view of the deep water intake vessel shown in FIG. 7 according to the present invention.
[Explanation of symbols]
10, 11: Deep water intake vessel
12: Deep water intake pipe
14: Pipe
16: Floating ship
17: Work boat
18: Intake pipe attachment
20: Connection work place
22: Stock location
24: Intake pump
26: Water tank
28: Collection wire
30: Weight
32: Intake pump side end
34: Tip
36: Packing
38, 39: Flange
40, 41: rod-shaped protrusions
42: Bearing part
44: opening
45: Hole
46: Lid
48: Bolt hole
50: Holding wire support bracket
52: Dimple
54: Pin
56: Stop hole
58: trunk
60: Samurai
62: Rudder
64: Upper deck
66: Bottom deck
68: Intake piping

Claims (5)

 A method of connecting a large number of pipes in order to form a deep water intake pipe and suspending it from the deep water intake ship underwater, and connecting the pipes in a substantially horizontal direction on the deep water intake ship The extension of the deep water intake pipe stretched by the connection of the pipe is sequentially pushed out of the deep water intake ship and stays near the water surface, and after the deep water intake pipe reaches a predetermined length , While engaging the intake pump side end of the deep water intake pipe to the intake pipe attachment part of the deep water intake ship, with this intake pipe attachment part as the axis, with the tip part connected to the recovery wire as the head, A deep water intake pipe installation method, wherein the deep water intake pipe is rotated like a pendulum so that the deep water intake pipe is submerged in water, and the deep water intake pipe is suspended substantially vertically from the deep water intake water ship.  A deep water intake pipe is formed by connecting a large number of pipes sequentially, and this is suspended from the deep water intake ship in the water, and the pipe is connected in a substantially horizontal direction on the work ship. The extension of the deep water intake pipe extended by the pipe connection is pushed out of the work vessel sequentially with the intake pump side end first and stays near the water surface, and the deep water intake pipe has a predetermined length. After reaching the intake pipe side end of the deep water intake pipe to the intake pipe attachment part of the deep water intake ship, the tip end connected to the recovery wire is connected to the intake pipe attachment part as an axis. A method for installing a deep water intake pipe, characterized in that the deep water intake pipe is submerged in the water by rotating like a pendulum at the head, and the deep water intake pipe is suspended substantially vertically from the deep water intake ship.  The retention near the surface of the extended portion of the deep water intake pipe is performed by locking a free end portion of the extended portion to a floating ship. How to install deep water intake pipes.  The installation of the deep water intake pipe according to any one of claims 1 to 3, wherein the retention of the deep water intake pipe near the water surface is performed by emptying the deep water intake pipe. Method. The deep water intake pipe installation method according to any one of claims 1 to 4, wherein a weight that can be removed by remote operation is provided at a tip of the deep water intake pipe .

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