JPH0223298A - Sea water sending system provided on sea bottom - Google Patents

Abstract

PURPOSE:To enable a relatively light soft hose to be used by supplying a pressure working medium to an inner pipe of a double pipe to rotate a turbine provided on the bottom of the sea and a water sending impeller with the turning force for sending the sea water from the outside of the inner pipe. CONSTITUTION:When a wave force pump 1 is operated to supply pressure water to an inner pipe 3 of a double pipe and a pipe 6, the pressure water rotates a drive turbine 20 of a pump 4 to be discharged from a hose 12. The sea water to be taken in by this operation is taken in by the pump 4 to be sent to the destination through an outer pipe 2 of the double pipe. Such pressure water for power, integration of water sending hose with the double pipe, insertion a pipe having the specific gravity heavier than the sea water into the inner pipe 3 of the double pipe against the external force such as ocean current, tide, etc., restrain the breakage, washing-away, etc., of the pipe. A relatively light soft hose such as polyethylene pipe and anticorrosive materials can be used and the water sending pipe can be laid semipermanently and relatively economically.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention supplies a working medium such as pressurized water to the seabed and pumps or conveys seawater through a flexible pipeline etc., thereby improving marine farms and port facilities. The purpose is to purify seawater, etc., and use it for marine development industries, etc.

[Prior art] Most of the seawater pumping and water supply systems currently in use have a prime mover such as a turbine, electric motor, or internal combustion engine installed on land, and the suction line of the pump is drawn into the sea to operate the pump using the above-mentioned power. It is being activated.

[Problems to be solved by the invention] These are the limitations of the equipment that arise from the limits of the degree of vacuum as the suction line becomes longer, and the fact that rigid pipes are required as long as the pipeline laid on the seabed is a thin line. As a result, there were limits to the construction work, and there were problems with pumping up deep seawater and transporting seawater over long distances.

[Means and operations for solving the problems] The present invention solves the above-mentioned problems by sending pressure water or a pressure working medium to the seabed from land or the sea, and using this pressure medium to rotate a turbine installed on the seabed. The rotational force is used to operate the pump, which pumps the water to its destination. With this method, there is no need to use rigid pipes for water pipes, and flexible pipes such as vinyl hoses, polyethylene hoses,
This purpose can be achieved by using rubber hoses, cloth hoses, etc. However, most of these substances have a specific gravity lower than or equal to that of seawater, making it extremely difficult to sink them to the seabed.As a countermeasure, a pipe with a high specific gravity or a submarine cable is installed inside the water pipe. This problem can be solved by running a cable with a shape. In addition, pressurized water for driving a turbine is passed through a pipe with a high specific gravity installed in the water pipe, that is, an inner pipe of a double pipe, and the energy of this pressure water is used to turn a turbine installed on the seabed and operate a pump. This problem can be solved by feeding water into the outer tube of this double tube, that is, outside the inner tube, and by combining two flows, that is, flows in opposite directions, into one tube.

[Examples] Examples of carrying out the present invention will be described below with reference to the drawings.

FIG. 2 shows a configuration in which the present invention is implemented using a wave pump and its 70-sheet. The configuration in this diagram is to first install a wave pump that is operated by the vertical movement of waves near land on the ocean, and then connect the pressurized water from this device to the inner pipe 3 of the double pipe, which has a high specific gravity. This tube shall be piped to the seabed for water intake purposes. In addition, a turbine-driven pump 4, which will be described later, is installed almost vertically on this seabed.
Assume that the aforementioned pipe is connected to this. Next, the pipes coming out of the above-mentioned wave pump are branched, and the - side is connected to the above-mentioned inner pipe 3 of the double pipe, and the other side is connected to land and connected to the water turbine 5. Further, this pipe 6 is provided with an accumulator, and a power generator [8, etc.] is also connected to the water turbine 5 described above. Next, the outer pipe 2 of the double pipe is branched from the inner pipe 3 in the middle of the piping, and is independently piped to land and connected to a device for water supply purposes, such as an ocean temperature difference power generation plant or a water tank at a fish farm. It is assumed that In addition, since this water pipe 9 does not have a pipe with a large specific gravity equivalent to the inner pipe part of the double pipe, a cable 11 in the form of a submarine cable is provided in this water pipe 9 to compensate for this. It is assumed that the water pipe 9 is sunk to the seabed with this weight. Also,
In order to prevent breakage at the edge of waves, protection pipes and other measures are installed on the outside of this water pipe 9.The discharge of driving pressurized water from the pump 4 installed on the seabed is carried out by this pump. Suction strainerMeasures to avoid contamination with seawater at the suction port
There is also a method of moving the discharge port away from the suction port using a hose 12, etc., and this hose 12 is connected to the pump 4 described later.
It may be installed by penetrating the floating body 17 at the top of the. In other words, the discharge pipe 26 passes through the center of the floating body 17, but it is also possible to provide a rotatable joint or the like in the upper part of the floating body 17. A floating body or the like may also be attached to the end of this hose.

Finally, a rope 113 is tied to the top of the pump 4, and one end of this rope is tied to the floating body 14 on the sea surface. Assume that waves are generated on the sea surface and the wave pump 1 is activated to supply pressurized water to the inner pipe 3 and pipe 6 of the double pipe. The pressurized water in the pipe 3 rotates a driving turbine 20 of a pump 4, which will be described later, and is discharged from the hose 12. The rotation of the turbine 20 at this time is transmitted to the water supply impeller 21, and with this operation, the seawater for intake purpose is sucked into the pump 4 into the outer pipe 2 of the double pipe, or in other words, to the outside of the inner pipe 3. Water can be sent to the ground. In this figure, the inner pipe 3 starts from the middle.
The outer pipe 2 of the double pipe is branched, but depending on the location and use, it may be possible to push it up to land as it is. Next, if the output of the wave pump becomes excessive due to large waves, or the water pipe 9 If water supply becomes unnecessary, the water turbine 5 will be operated to generate electricity.The explanation for 0 or more is an explanation when a wave pump is installed on the ocean, but the location conditions,
Depending on the application, it may be possible to operate a pump on land using an electric motor or an internal combustion engine to generate pressure water, and use this pressure water to operate the pump 4 installed on the seabed. Considering piping resistance, etc., this method is a waste of energy compared to one that uses natural energy, but it does depend on the installation location, scale of the farm, wave conditions, demand for marine resources, stability, etc. Sometimes this method is chosen. If electricity is to be used, it will be economical considering the use of late-night electricity. However, it is conceivable that the water could be pumped from offshore using a submersible pump that uses electricity.
Due to electrical leakage accidents and maintenance issues on the ocean, it is nearly impossible to use submersible pumps that use electricity9.
Next, the big advantage of installing a pump on land and using a power source such as electricity or an internal combustion engine is that if this double back system is used in a bay fish farm, the pump installed on land has a large lift. It is also possible to use this to suck up sludge that has turned into sludge in the fish farm and pump it, and use this power to rotate the turbine 20. However, since this water is sludge, it is necessary to be careful about the outlet of the hose 12 connected to the outlet of the pump 4.

In this case, you can get both benefits at once by treating the sludge and, if this water is above the sea level, by using the head head difference.
The following explanation will be given with reference to FIG.

FIG. 2 is an assembly and longitudinal sectional view of the pump 4.

In the structure of this theory, first, a base block 15 is placed on the seabed, and a floating body 17 is fixed to the top of the pump using a support 16 or the like. Next, the outer pipe 18 of the curved pipe and the inner pipe 1 of the curved pipe.
9 faces in opposite directions, and a turbine 20 is installed in the inner pipe of the curved pipe.
The outer pipe 18 of the curved pipe is equipped with a water supply impeller 21.
It is assumed that the casing is oriented as shown in the figure, and the turbine 20 and the water supply impeller 21 are connected by a shaft 22. Further, a bearing 25 is installed at the bent part of the inner pipe of the curved pipe, a bearing 23 is installed at the casing of the turbine 20, a bearing 24 is installed at the casing of the water supply impeller 21 which is shown in the opposite direction, and a suction strainer 27 is installed at the casing of the turbine 20. It shall be installed as follows.

In addition, in the above-mentioned part numbers, the lower part of the pump 4 consisting of parts 18 to 27 is connected to the base block 15 with a saddle 28 etc., and the upper part is connected to the floating body 17 with a support 29 etc.
It is assumed that it is fixed to.

Next, depending on the purpose of use, the discharge pipe 26 may be provided with measures such as the hose 12 shown in FIG. 1 mentioned above can be connected thereto. The operation of this device described above will be explained below. Now suppose that pressure water is supplied to the inner pipe 19 of the curved pipe, the turbine 20 rotates, and the water is discharged into the sea through the discharge pipe 26. At this time, the rotational force of the turbine 20 is transmitted to the water supply impeller 21 by the shaft 22, and with this operation, the seawater for the purpose of water intake is transferred to the suction strainer 27.
It is sucked in from the pipe, passes through the curved outer pipe 18, and is fed into the double-pipe outer pipe 2 shown in FIG. At this time, the blades of the turbine 20 are pushed upward by the action of the driving pressure water flowing into the inner pipe 19 of the curved pipe, but the water supply impeller 21, which is in the opposite direction, , curved outer pipe 18
Alternatively, it is pushed downward by the back pressure of seawater inside the outer tube 2 of the double tube. That is, since the directions of the forces of these two impellers are opposite to each other, the axial forces applied to the bearing 25 cancel each other out. Next, the pressure water flowing into the inner pipe 19 of the curved pipe is often seawater on land or near land, and in this case, the seawater temperature difference is higher than that of seawater sucked from the suction strainer 27.
Fairly warm water should be discharged from the discharge pipe 26 of the pump 4. In other words, this discharged water has the property of rising due to convection phenomena and does not come down to the seabed very much, but there are still phenomena such as ocean currents and tides, so in some cases, the hose 12 explained in Fig. 1 etc. may also be installed. Next, various types of water turbines are used for the turbine 20, and depending on the comparative rotational speed values, usually Francis water turbines, mixed flow water turbines, propeller water turbines, Kabran water turbines, axial flow water turbines with reversed axial flow pumps, and pumps are used. Water wheels and the like are used, and depending on the conditions, these may be multi-staged. In addition, centrifugal pumps, mixed flow pumps, axial flow pumps, turbine pumps, pump-turbines, etc. are used as impellers for water conveyance, but depending on the conditions, these may also be multi-stage types. This will be explained with reference to Figure 3.

FIG. 3 is a sectional view of section A in FIG. 1.

The configuration of this figure will be explained below. First, there is an inner tube 3 inside the outer tube 2 of the double tube, and in order to increase the specific gravity of the inner tube 3, an iron core 30, an exterior material 31, etc. are arranged as shown in the figure. In other words, due to the weight of this iron core, not only the inner tube 3 but also the outer tube 2 of the double tube can float up from the seabed. It becomes what it is. However, depending on the location, measures such as anchors and chains may be taken.

The operation and purpose in this figure are the same as those explained in FIG. 1, and will not be repeated.

FIG. 4 is a sectional view of section B in FIG. 1.

The configuration of this figure is first that a cable 11 in the form of a submarine cable is passed through the inside of the water pipe 9. Assuming that this cable 11 has a higher specific gravity than seawater, not only the cable 11 itself but also the water pipe 9 is also under the sea. It becomes difficult to levitate. In other words, by taking measures such as anchors and chains depending on the location, it is assumed that it can be laid on the seabed without being washed away by external forces such as ocean currents and tides. This is the same explanation as above, so I won't repeat it.

Fig. 5 is a sectional view of part A in Fig. 1, but it is only a combination of Figs. 3 and 4 with some modifications. There is an inner tube 3 inside, and a cable 11 is passed through the inner tube 3. That is, the cable 11 serves to sink these two pipes to the seabed, and the pressure working medium flows into the inner pipe 3 of the double pipe, and the seawater for water intake purposes flows into the outer pipe 2. .

[Effects of the Invention] As is clear from the above description, the present invention overcomes the limitations of long-distance transportation of seawater on the seabed, and integrates power pressure water and water supply hose into a double pipe, In response to external forces such as ocean currents and tides, passing a tube with a specific gravity higher than seawater through the inner pipe of a double pipe, or running a submarine cable-like cable with a specific gravity higher than seawater through a flexible pipe. This prevents breakage and pipe leakage, and allows the use of relatively light soft hoses such as polyethylene pipes, making it possible to use materials with less corrosion and making it possible to install semi-permanent water pipes. It is possible to install it at a relatively low cost, so it is something that we can look forward to in the future.

[Brief explanation of the drawing]

Figure 1 shows the configuration and flow sheet when the present invention is implemented using a wave pump, Figure 2 is an assembled diagram and longitudinal sectional view of the pump 4, and Figure 3 is a sectional view of section A in Figure 1. ,
FIG. 4 is a sectional view of section B in FIG. 1. FIG. 5 is a sectional view of part A in FIG. 1, but it is a sectional view of a strange new type by combining FIGS. 3 and 4. Code 100. Wave pump 200. Double tube outer tube 311.
Inner tube of double tube 400. Pump 510. water wheel
601. Pipe 700. Accumulator 8910 Generator 911.
Water pipe 10. ,,water tank 11,,,cable
12. , +Hose 13, Rope LL
, , Floating body 15 , , Base block 16. ,,Strut 17,,,Floating body 1g,,,Outer pipe of curved pipe 19
,,,inner pipe of curved pipe 20. ,,turbine 21. ,,Water conveying impeller 22. ,, axis 23.24.25. , , Bearing 26. ,,Discharge pipe 27, ,Suction strainer 2g, ,Saddle 29. ,,Support 30,,
, Iron core 31, , Exterior material of inner tube 32. ,,Cable sheathing material 33,,,Undersea

Claims (1)

[Claims] 1. A turbine (20) and a water supply impeller (21) interlocked with the turbine (20) are provided on the seabed, and the pressure working medium is supplied to the inner pipe of the double pipe. turns a turbine (20) installed on the seabed, and this rotational force drives a water supply impeller (
21) to the inside of the outer tube of the double tube, that is,
A seawater conveyance system installed on the seabed, characterized by the fact that seawater is conveyed from the outside of the inner pipe. 2. Turbine (20) and water supply impeller (21) on the seabed
The turbine is provided with a curved inner pipe (19), the water supply impeller is provided with a curved outer pipe (18), and the curved inner pipe (19) and the curved outer pipe ( 18) are in opposite directions, and the rotation of the turbine is transmitted to the water supply impeller via the shaft (22) to transport seawater, and the water supply pump is for a seawater water supply system installed on the seabed. 3. On the seabed, by providing a tube with a higher specific gravity than the seawater that serves as the weight of this tube, that is, an inner tube (3) of the double tube, inside the outer tube (2) of the double tube, Seawater installed on the seabed, characterized in that the outer pipe of the pipe is sunk to the seabed by the weight of this pipe, or the weight of this pipe restrains the pipe from being washed away by external forces such as ocean currents and tidal currents. Water transmission system pipeline. 4. By installing a cable (11) in a pipe on the seabed, the weight of this cable (11) can sink the pipe into the seabed, or the weight of this cable (11) can be used to prevent ocean currents, tides, etc. A seawater transmission system pipeline installed on the seabed that is characterized by restraining the pipe from being washed away by external forces.