JP2021107665A - Pumping system - Google Patents

Abstract

To provide a pumping system which directly pumps sea water on a seabed side to a sea surface side by utilizing rise movement of air bubbles in a guide pipe, and can reduce diameters of the air bubbles before the air bubbles reach the sea surface side.SOLUTION: A lifting system includes: a guide pipe part arranged so as to pump sea water on a seabed side to a sea surface side and substantially vertically extend; a jet nozzle part which jets compressed air, and forms an air bubble group moving upward in the guide pipe part; a compressed air supply part for supplying the compressed air to the jet nozzle part; and a fragmentation part which is arranged at a predetermined position on the spouting part side in the guide pipe part, and fragments air bubbles moving to the sea surface side in the guide pipe so that their diameters are reduced.SELECTED DRAWING: Figure 4

Description

The present invention relates to a pumping system. In particular, the present invention relates to a pumping system utilizing the ascending movement of bubbles.

Conventionally, in order to lower the temperature of the sea surface, a technique of moving deep sea water having a low temperature to the sea surface side has been known.
For example, using a water flow pipe with the inflow port directed upstream of the deep sea water flow, the deep sea water flowing in, and the discharge port curved or inclined upward, the deep sea water, which is a cold heat source, is placed on the surface layer. A technique for moving has been proposed (see, for example, Patent Document 1).
However, the technique of Patent Document 1 has a problem that the water flow pipe becomes very long and the burden on the equipment and the installation work is large. In addition, there is a problem that the amount of pumped water per unit time is small.

On the other hand, for example, low-temperature water that is deeply stagnant in the sea due to the pressure of the air that is injected (spouted) upward from the air sent from the compressed air device from the jet (spout) nozzle located on the seabed. A technique for pushing up (deep sea water, etc.) has been proposed (see, for example, Patent Document 2).

JP-A-2009-46973 Japanese Patent Application Laid-Open No. 11-71735

However, in the technique of Patent Document 2, since the low-temperature water that is stagnant deep in the sea is not directly pumped to the sea surface side (surface layer portion), the seawater to the sea surface as a whole is pushed up to the sea surface side in the process of pushing the low-temperature water to the sea surface side. After lowering the temperature, the temperature on the sea surface side (surface layer) can finally be lowered. The technique of Patent Document 2 has problems such as efficiency caused by not directly pumping water on the sea surface side (surface layer portion).

Further, in the technique of Patent Document 2, low-temperature water (deep sea water, etc.) that is stagnant deep in the sea can be pushed up by the air ejected from the injection (spouting) nozzle, but it becomes larger while rising in the sea. The problem is that bubbles burst on the surface of the sea to generate waves on the surface of the sea, affecting ships and the like.

The present invention provides a pumping system capable of directly pumping seawater on the seabed side to the sea surface side and reducing the diameter of the bubbles before reaching the sea surface by utilizing the ascending movement of bubbles in the guide pipe. The purpose is to do.

The present invention has a water intake portion arranged on the sea floor side and a water discharge portion arranged on the sea surface side, and a guide pipe portion arranged so as to extend substantially vertically to pump seawater on the sea floor side to the sea surface side. , An ejection nozzle portion that is arranged in the guide pipe portion or below the intake portion to form a group of bubbles that eject compressed air and move upward in the guide pipe portion, and a compressed air supply that supplies compressed air to the ejection nozzle portion. A bubble that is arranged at a predetermined position on the water discharge part side in the guide pipe part or between the water discharge part and the sea surface and moves to the sea surface side in the guide pipe part or a bubble that moves from the water discharge part to the sea surface side. The present invention relates to a pumping system having a subdivision portion for subdividing the pipe so as to reduce the diameter.

In the pumping system of the present invention, the compressed air supply unit supplies a first compressed air supply unit that supplies compressed air with a first air pressure and a second air pressure compressed air that is lower than the first air pressure. It has a second compressed air supply section, and the ejection nozzle section has a first ejection section that ejects compressed air of the first air pressure from the first compressed air supply section, and a radial direction of the guide pipe section. It is preferable to have a second ejection portion which is arranged so as to surround the outer periphery of the first ejection portion and ejects compressed air of the second air pressure from the second compressed air supply portion.

Further, in the water pumping system of the present invention, the ejection nozzle portion has a double pipe structure, and has a first pipe portion arranged inside and a second pipe portion arranged outside, and the first one. The first ejection portion is configured to include a first hollow portion of the first pipe portion and a first ejection port formed at an end portion of the first hollow portion on the sea surface side, and the second ejection portion. Is from the second hollow portion formed between the second pipe portion and the first pipe portion, which is annular when viewed from the vertical direction, and from the vertical direction formed at the end portion of the second hollow portion on the sea surface side. It is preferable that the second spout having an annular shape is provided.

Further, in the pumping system of the present invention, the ejection nozzle portion is a group of bubbles that move seawater to the sea surface side by the ejected compressed air, and is formed by the compressed air ejected from the first ejection portion. A bubble group and a second bubble group formed so as to surround the outer periphery of the first bubble group by the compressed air ejected from the second ejection portion and having a diameter smaller than that of the first bubble group are generated. It is preferable to let it.

Further, in the pumping system of the present invention, the second bubble group ejected from the second ejection portion rises located between the first bubble group and the inner surface of the guide pipe portion, and the second bubble group is raised. It is preferable to prevent one bubble from colliding with the inner surface of the guide pipe portion.

Further, in the water pumping system of the present invention, the guide pipe portion has a double pipe structure, is arranged inside, and has a first intake portion, a first water outlet portion, and a first guide pipe on the outside. It has a second guide pipe that is arranged and has a second water intake part and a second water discharge part that is arranged on the sea surface side of the first water discharge part, and the ejection nozzle part is the first guide. It is preferably arranged in the pipe, and the subdivided portion is preferably arranged at a predetermined position on the side of the second water discharge portion in the second guide pipe or between the second water discharge portion and the sea surface.

Further, the pumping system of the present invention further includes an auxiliary ejection nozzle portion formed between the first guide pipe and the second guide pipe and arranged in an annular hollow portion when viewed from the vertical direction. It is preferable that the compressed air supply unit further includes a third compressed air supply unit that supplies compressed air having a third air pressure lower than the first air pressure to the auxiliary ejection nozzle unit.

Further, in the pumping system of the present invention, the auxiliary ejection nozzle portion is a group of bubbles that move seawater to the sea surface side by the ejected compressed air, and is formed by at least the compressed air ejected from the first ejection portion. It is preferable to generate a third bubble group formed so as to surround the outer periphery of the first bubble group in the second guide pipe.

Further, in the pumping system of the present invention, the third bubble group ejected from the auxiliary ejection nozzle portion rises located between the first bubble group and the inner surface of the second guide pipe, and the first one. It is preferable to prevent one bubble from colliding with the inner surface of the second guide pipe.

Further, in the pumping system of the present invention, the first guide pipe is a plurality of shock-cushioning windows that communicate the inside of the guide pipe with the hollow portion, and the bubbles rising inside the first guide pipe and the air bubbles. / Or having a plurality of shock-cushioning windows that can move to the hollow portion in seawater and that seawater rising in the hollow portion can move inside the first guide pipe. preferable.

Further, the pumping system of the present invention has a third guide pipe that is continuously arranged on the second water discharge portion side of the second guide pipe and a third guide pipe that is arranged in the third guide pipe and discharges water from the second water discharge portion. It is preferable to further include a submersible pump unit that sends the seawater to the sea surface side or above the sea surface.

Further, in the pumping system of the present invention, the third guide pipe is arranged so that the end opposite to the second water discharge portion is located above the sea surface, and the submersible pump portion is lowered by a predetermined distance from the sea surface. The seawater is discharged to the outside of the third guide pipe, and the internal sea level, which is the seawater surface in the third guide pipe, is the seawater in the third guide pipe by the submersible pump unit. By being discharged to the outside of the guide pipe and being positioned vertically below the sea level, the position of the internal sea surface is positioned below the sea level in the vertical direction, thereby creating a pressure difference and taking water from the intake portion. It is preferable to promote it.

Further, in the pumping system of the present invention, it is preferable that the subdivided portion includes one subdivided member or a plurality of subdivided members arranged apart from each other by a predetermined distance in the vertical direction.

Further, in the pumping system of the present invention, the compressed air supply unit receives one or a plurality of tanks accommodating an air compressor and compressed air mounted on a ship and compressed air contained in the one or a plurality of tanks. It is preferable to have a supply pipe portion that supplies the ejection nozzle portion.

According to the present invention, a pumping system capable of directly pumping seawater on the seabed side to the sea surface side and reducing the diameter of the bubbles before reaching the sea surface by utilizing the ascending movement of bubbles in the guide pipe. Can be provided.

It is a figure explaining the pumping system of 1st Embodiment. It is a figure explaining the guide pipe part and the ejection nozzle part. It is a figure explaining the ejection nozzle part, (a) the cross-sectional view seen from the horizontal direction, (b) the view of the ejection port seen from above in the vertical direction. It is a figure explaining the outline of the bubble state in 1st Embodiment, (a) the state seen from the horizontal direction, (b) the state seen from the vertical direction (AA). It is a modification of the 1st Embodiment, and is the figure which shows the form which the subdivision part has a plurality of subdivision members. It is a figure explaining the pumping system of 2nd Embodiment. It is a figure explaining the pressure-buffering window, (a) the cross-sectional view BB of FIG. 6, and (b) the schematic diagram explaining the operation of the pressure-buffering window. It is a figure explaining the outline of the bubble state in 2nd Embodiment, (a) the state seen from the horizontal direction, (b) the state seen from the vertical direction (CC cross section), (c) the state seen from the vertical direction (c) It is a figure explaining the DD cross section). It is a figure explaining the pumping system in 3rd Embodiment.

Hereinafter, the pumping system according to the embodiment of the present invention will be described with reference to the drawings.
The pumping system according to the present embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a diagram illustrating a pumping system of the first embodiment. FIG. 2 is a diagram illustrating a guide pipe portion and a ejection nozzle portion. 3A and 3B are views for explaining the ejection nozzle portion, and are (a) a cross-sectional view seen from the horizontal direction and (b) a view of the ejection port seen from above in the vertical direction.

First, the outline of the pumping system 1 in the first embodiment will be described with reference to FIG.
As shown in FIG. 1, the pumping system 1 includes a guide pipe 10 (guide pipe section), a compressed air supply section 20, a ejection nozzle section 30, and a subdivision section 40.

In the pumping system 1, the compressed air supplied from the compressed air supply unit 20 is ejected into the guide pipe 10 by the ejection nozzle unit 30, and the seawater W (deep water) on the seabed WA side is utilized by utilizing the rise of bubbles in the guide pipe 10. Etc.) is a pumping system that pumps water directly to the sea surface WB side. The pumping system 1 is a system for pumping deep sea water to the sea surface WB side. The pumping system 1 is a system for directly pumping low-temperature deep sea water (seawater W) on the seabed WA side to the sea surface WB side. Here, the pumping system 1 can pump seawater containing fine particles (for example, fine particles of rare metals excavated from the seabed) in addition to deep sea water.

Further, the pumping system 1 is a pumping system in which the diameter of the bubble B can be reduced and subdivided by the subdivision unit 40. Further, the pumping system 1 is a pumping system in which the straightness of the bubble B in the vertical direction is improved by devising the ejection of compressed air by the ejection nozzle portion 30, and the pumping water is improved. Hereinafter, the components of the pumping system 1 will be described.

As shown in FIGS. 1 and 2, the guide pipe 10 has a water intake portion 11 arranged on the seabed WA side and a water discharge portion 12 arranged on the sea surface WB side. The guide pipe 10 is arranged so as to extend substantially vertically.
The guide pipe 10 is the deep sea water taken in from the water intake unit 11 due to the ascending movement of the bubbles B (Ba, Bb) formed by the compressed air Pa and Pb ejected by the ejection nozzle unit 30 arranged on the water intake unit 11 side. (Seawater W) is pumped into the discharge section 12. Since the guide pipe 10 is arranged so as to extend substantially vertically, the bubble B (Ba, Bb) group rises straight in the vertical direction.

The guide pipe 10 is fixed by a fixture or the like (not shown). For example, the lower end side of the guide pipe 10 is fixed by an anchor (not shown). Further, for example, the upper end side of the guide pipe 10 may be fixed to the ship 100 or a floating body (not shown) by a fixture (not shown).
The length and inner diameter of the guide pipe 10 can be appropriately adjusted according to the depth to the seabed WA, the amount of pumped water, and the speed. The guide pipe 10 is not particularly limited to the following, but is, for example, 100 to 3000 m in length, preferably 150 to 1000 m, more preferably 200 to 500 m when used in the ocean, and is used in other water areas. If so, the length can be set to 20 to 200 m. Further, the inner diameter can be set to 2 to 20 m, and the material of the guide pipe 10 is not particularly limited to the following, but for example, when used in the ocean, SUS316, titanium alloy, glass fiber and the like are exemplified. , SUS304, glass fiber and the like when used in other water areas are exemplified.

As shown in FIGS. 1 and 2, the compressed air supply unit 20 supplies the compressed air Pa and Pb to the ejection nozzle unit 30. The compressed air supply unit 20 supplies compressed air Pa and Pb for pumping deep sea water (seawater W) to the sea surface WB side into the guide pipe 10 via the ejection nozzle unit 30.

The compressed air supply unit 20 includes a first compressed air supply unit 20a that supplies compressed air Pa with a first air pressure, and a second compressed air supply unit that supplies compressed air with a second air pressure that is lower than the first air pressure. It has 20b and.

The first compressed air supply unit 20a includes a first compressor 21a, one or more first tanks 22a, and a first supply pipe 23a. In this embodiment, the first compressor 21a and one or more first tanks 22a are mounted on the ship 100.

The first compressor 21a supplies air continuously or intermittently to accommodate compressed air in one or more first tanks 22a.
The one or a plurality of first tanks 22a are configured to accommodate compressed air and to be able to supply the first compressed air Pa to the ejection nozzle portion 30 (first ejection portion 31) side by an operation unit (not shown).
The first supply pipe 23a is a pipe that connects one or a plurality of first tanks 22a to the ejection nozzle portion 30 (first ejection portion 31). The first supply pipe 23a supplies the compressed air contained in one or a plurality of first tanks 22a to the ejection nozzle portion 30 (first ejection portion 31).

Similarly, the second compressed air supply unit 20b includes a second compressor 21b, one or more second tanks 22b, and a second supply pipe 23b. In this embodiment, the second compressor 21b and one or more second tanks 22b are mounted on ship 100.

The second compressor 21b supplies air continuously or intermittently to accommodate compressed air in one or more second tanks 22b.
The one or a plurality of second tanks 22b are configured to accommodate compressed air and to be able to supply the second compressed air Pb to the ejection nozzle portion 30 (second ejection portion 33) side by an operation unit (not shown).
The second supply pipe 23b is a pipe that connects one or a plurality of second tanks 22b to the ejection nozzle portion 30 (second ejection portion 33). The second supply pipe 23b supplies the compressed air contained in one or a plurality of second tanks 22b to the ejection nozzle portion 30 (second ejection portion 33).

As shown in FIGS. 2 and 3A and 3B, the ejection nozzle portion 30 is arranged on the water intake portion 11 side in the guide pipe 10. The ejection nozzle unit 30 is connected to the compressed air supply unit 20 and is configured to be capable of ejecting compressed air directly or indirectly supplied from the compressed air supply unit 20 upward (on the sea surface WB side). Here, the ejection nozzle portion 30 ejects compressed air to form a group of bubbles that move upward in the guide pipe 10. Here, the ejection nozzle portion 30 is arranged on the water intake portion 11 side in the guide pipe 10, but is not limited to this, and may be arranged, for example, in the central region in the vertical direction in the guide pipe 10. If the bubbles B formed by ejecting the compressed air enter the guide pipe 10 and move upward, they may be arranged outside (below) the water intake portion 11.

The ejection nozzle portion 30 has a first ejection portion 31 that ejects compressed air Pa (high-pressure compressed air) of the first air pressure from the first compressed air supply portion 20a (23a) and a first ejection portion 31 in the radial direction of the guide pipe 10. It is arranged so as to surround the outer periphery of the portion 31, and has a second ejection portion 33 that ejects compressed air Pb (medium / low pressure compressed air) of the second air pressure from the second compressed air supply portion 20b (23b).

In the present embodiment, the ejection nozzle portion 30 has a double pipe structure, and has a first pipe portion 35 arranged inside and a second pipe portion 36 arranged outside.
The first ejection portion 31 has the diameters of the first hollow portion 37 of the first pipe portion 35, the first ejection port 32 formed at the end of the first hollow portion 37 on the sea surface side, and the first ejection port 32. It is configured to have an orifice 50 capable of adjusting the ejection amount of compressed air Pa, and a trumpet portion 52 arranged on the ejection side at the first ejection port 32. The first ejection portion 31 is configured so that the first compressed air Pa supplied to the first hollow portion 37 can be ejected from the first ejection port 32.

The second ejection portion 33 is formed between the second pipe portion 36 and the first pipe portion 35 at the second hollow portion 38 which is annular when viewed from the vertical direction and at the end portion of the second hollow portion 38 on the sea surface side. It is configured to include a plurality of second spouts 34 that are formed in an annular shape when viewed from the vertical direction, and an orifice 53 that can adjust the amount of compressed air Pb ejected. Each of the plurality of second ejection portions 33 is configured so that the second compressed air Pb supplied to the second hollow portion 38 can be ejected from the second ejection port 34.

The compressed air ejected from the ejection nozzle portion 30 to the sea surface WB side becomes a large number of bubbles Ba and Bb in the guide pipe 10 and moves upward, and at the same time, the deep sea water (seawater W) taken in from the intake portion 11 is transferred to the sea surface. Move to the WB side.
In the present embodiment, the first compressed air (high pressure) ejected from the first ejection unit 31 generates a large bubble group Ba (first bubble group). Further, the second compressed air (medium / low pressure) ejected from the second ejection portion 33 generates a bubble Bb group (second bubble group) having a diameter smaller than that of the bubble Ba.

In the guide pipe 10, a bubble group Ba (first bubble group) having a large diameter is formed in the central region when viewed from the vertical direction, and a bubble group Bb group (second bubble group) is formed so as to surround the outer circumference of the bubble group Ba group. (See FIG. 4 (b)). By moving the bubbles Ba and Bb groups upward in such a state, the straightness in the vertical direction is improved. The large-diameter bubble Ba group generated by the ejection of the first ejection portion 31 mainly contributes to pumping (pumping). The bubble Bb group having a diameter smaller than that of the bubble Ba generated by the ejection of the second ejection portion 33 mainly contributes to the prevention of fluctuation of the bubble group and contributes to the straightness of the bubble group.

Specifically, the bubble Ba expands as it rises, its volume increases, and the rate of rise also increases. It is suitable from the viewpoint of water pumping. However, in addition to the resistance of water, the ascending speed of the bubble Ba may decrease due to splitting or deformation due to contact with the inner surface of the guide pipe 10. In this case, the pumping water will be reduced.
The bubble Bb group ejected from the second ejection portion 33 rises at a position between the bubble Ba group and the inner surface of the guide pipe 10, and suppresses the bubble Ba from colliding with the inner surface of the guide pipe 10. ..
That is, the bubble Bb is located between the inner surface of the guide pipe 10 and the bubble Ba, and suppresses the collision of the bubble Ba with the inner surface of the guide pipe 10. Further, since the bubble Bb is located between the inner side surface of the guide pipe 10 and the bubble Ba and rises, the fluctuation of the bubble Ba at the time of rising is suppressed. Thereby, according to the present embodiment, the pumping water of the deep sea water (seawater W) in the pumping system 1 can be improved.

In the present embodiment, the first air pressure is appropriately adjusted according to the water pressure, and is not particularly limited, but can be adjusted to, for example, 5 to 20 times the water pressure. The second air pressure is appropriately adjusted according to the water pressure, and is not particularly limited, but can be adjusted to, for example, 2 to 5 times the water pressure.

As shown in FIGS. 1 and 2, in the present embodiment, the subdivision portion 40 is arranged in the water discharge portion 12 in the guide pipe 10. The subdivision unit 40 subdivides the bubbles B (Ba, Bb) moving in the guide pipe 10 toward the sea surface WB so that the diameter becomes smaller. Here, subdivision means to reduce the diameter and volume of bubbles, and does not mean microbubbles or the like. Subdivision is to split bubbles to reduce their diameter and volume, which can be rephrased as splitting.

Here, the bubbles B group have a large diameter near the sea surface, the diameters are different, and the ascending speed is high. Therefore, when the bubble B group or the pumped deep sea water directly flows out from the guide pipe 10, the influence and stress on the sea surface WB and the vicinity of the water discharge portion are large. The subdivision portion 40 is arranged in the water discharge portion 12 of the guide pipe 10, and the air bubbles B (Ba, Bb) moving in the guide pipe 10 toward the sea surface WB are subdivided so as to have a smaller diameter, thereby subdividing the sea surface WB. It suppresses the influence and stress on the area around the water outlet.

The material and structure of the subdivided portion 40 are not particularly limited, and examples thereof include a set of one or a plurality of rod-shaped members, a metal mesh member, a member having a slit, and a fixed mixing member having a honeycomb structure. Here, since the pumping speed (water discharge speed) is suppressed in the structure that causes pressure loss, a set of a plurality of rod-shaped members that also serve as separators near the water surface where air-water separation is likely to occur, and a metal mesh member. , A member having a slit, a fixed mixing member having a honeycomb structure, and the like are preferably arranged as the subdivision portion 40.

Further, the arrangement position of the subdivision portion 40 is not limited to the water discharge portion 12, and any position may be used as long as the diameter of the bubble B that has increased during the ascent can be reduced to reduce the influence on the sea surface WB. For example, the subdivision portion 40 may be located at a predetermined position on the water discharge portion 12 side in the guide pipe 10, or may be arranged between the water discharge portion 12 and the sea surface WB (outside the guide pipe 10). When the subdivision unit 40 is arranged between the water discharge unit 12 and the sea surface WB (outside the guide pipe 10), the subdivision unit 40 subdivides the bubbles B moving from the water discharge unit 12 to the sea surface WB side so that the diameter becomes smaller.

Subsequently, the operation in the present embodiment will be described with reference to FIGS. 4 (a) and 4 (b). FIG. 4 is a diagram for explaining the outline of the bubble state in the first embodiment, and is a diagram for explaining (a) a state viewed from the horizontal direction and (b) a state viewed from the vertical direction (AA).
As shown in FIG. 4A, first, in the pumping system 1, compressed air is supplied to the ejection nozzle portion 30. Specifically, compressed air Pa at a first atmosphere (high pressure) is supplied to the first ejection portion 31 via the supply pipe 23a. Further, compressed air Pb having a second atmospheric pressure (medium / low pressure) is supplied to the second ejection portion 33 via the supply pipe 23b.

Subsequently, the supplied compressed air is ejected from the ejection nozzle portion 30 toward the sea surface WB side (upper in the vertical direction). Specifically, compressed air Pa at a first atmosphere (high pressure) is ejected upward from the first ejection port 32 of the first ejection portion 31. Further, the compressed air Pb having a second atmospheric pressure (medium / low pressure) is ejected upward from the second ejection port 34 of the second ejection portion 33. As a result, a large number of bubbles B group are formed.

Specifically, as shown in FIG. 4B, compressed air Pa at a first atmosphere (high pressure) is ejected upward from the first ejection port 32 of the first ejection portion 31, and a group of bubbles Ba is formed. Will be done. The bubble Ba is a bubble having a large diameter. Further, the compressed air Pb at the second atmospheric pressure (medium / low pressure) is ejected upward from the second ejection port 34 of the second ejection portion 33, and the bubble Bb group is formed. The bubble Bb is a bubble having a smaller diameter than the bubble Ba.

According to the present embodiment, the bubbles B (Ba, Bb) move up in the guide pipe 10, so that the deep sea water (seawater W) taken in from the intake unit 11 is moved to the sea surface WB side. In the present embodiment, the straightness in the ascending movement of the bubble B (Ba, Bb) group is improved by the ascending movement in such a manner that the outer circumference of the bubble Ba group is surrounded by the bubble Bb group. The large-diameter bubble Ba group generated by the ejection of the first ejection portion 31 mainly contributes to pumping (pumping). The bubble Bb group having a diameter smaller than that of the bubble Ba generated by the ejection of the second ejection portion 33 mainly contributes to the prevention of fluctuation of the bubble group and contributes to the straightness of the bubble group. According to this embodiment, the pumping water of the deep sea water (seawater W) in the pumping system 1 is improved.

Subsequently, the subdivision unit 40 subdivides the rising and moving bubbles B so that the diameter becomes smaller. The bubble group B moves upward while increasing its diameter. The subdivision unit 40 subdivides the bubble B group having a large diameter so as to have a small diameter.
Subsequently, the bubble B group subdivided by the subdivision portion 40 so as to have a smaller diameter is discharged from the water discharge portion 12 to the sea surface WB side together with the pumped deep sea water (seawater W). Since the diameter of the bubble B discharged from the water discharge portion 12 is small, the influence of bursting or the like on the sea surface WB is suppressed. For example, it is possible to suppress waves and sounds generated on the sea surface WB caused by the movement and burst of bubbles B.

From the above, the pumping system 1 of the present embodiment can directly and efficiently pump deep sea water (seawater W) to the sea surface side. The deep sea water (seawater W) pumped by the pumping system 1 may be sampled in a tank (not shown) or the like, or may be mixed with seawater in the surface layer region on the sea surface WB side. When the pumped deep sea water (seawater W) is mixed with the seawater in the surface layer region on the sea surface WB side, the pumping system 1 can lower the water temperature of the sea surface WB in the predetermined region.

Further, the pumping system 1 of the present embodiment can suppress the influence of the bubble B on the sea surface WB. The pumping system 1 can reduce the waves and sounds generated on the sea surface WB caused by the movement and burst of the bubbles B. As a result, the pumping system 1 can suppress adverse effects on the ship 100 and the like. Further, the pumping system 1 can increase the amount of dissolved oxygen in the surface layer region on the sea surface WB side by reducing the diameter of the bubble B.

Subsequently, a modified example of the first embodiment will be described with reference to FIG. FIG. 5 is a modification of the first embodiment, and is a diagram showing a form in which the subdivided portion has a plurality of subdivided members. The pumping system 1A has a configuration similar to that of the first embodiment described above, in addition to having a plurality of subdivided members in the subdivided portion.

As shown in FIG. 5, the pumping system 1A includes a subdivision unit 40 having a plurality of subdivision members. The subdivision unit 40 is configured to have a plurality of subdivision members arranged apart from each other by a predetermined distance in the vertical direction.
The subdivision unit 40 includes a first subdivision member 41 arranged in the water discharge unit 12, a second subdivision member 42 arranged vertically below the first subdivision member 41 by a predetermined distance, and the like. It has a third subdivision member 43 arranged on the lower side in the vertical direction of the second subdivision member 42 at a predetermined distance.

In the present embodiment, the diameter of the bubbles is subdivided in the order of the third subdivision member 43, the second subdivision member 42, and the first subdivision member 41 (in the order in which the bubbles come into contact). The structure of each subdivided member (subdivision roughness, etc.) is adjusted. For example, the opening of the subdivided member can be gradually reduced. In the present embodiment, since the subdivision portion 40 is configured to have a plurality of subdivision members, the impact caused by the bubbles B can be dispersed. By subdividing the bubble B in multiple stages, it is possible to reduce the burden on each subdivided member.
Further, since the subdivided portion 40 is configured to have a plurality of subdivided members, the diameter of the final bubble B can be made finer. As a result, the pumping system 1A can further suppress the influence on the sea surface WB and further increase the dissolved oxygen.

Subsequently, the pumping system according to the second embodiment will be described with reference to FIGS. 6 to 8 (c). FIG. 6 is a diagram illustrating a pumping system of the second embodiment. 7A and 7B are views for explaining the pressure buffering window, and is a schematic view for explaining the operation of (a) a cross-sectional view taken along the line BB of FIG. 6 and (b) the pressure absorbing window. FIG. 8 is a diagram for explaining the outline of the bubble state in the second embodiment, in which (a) a state viewed from a horizontal direction, (b) a state viewed from a vertical direction (CC cross section), and (c) a vertical direction. It is a figure explaining the entangled state (DD cross section). The configuration and the like similar to those of the first embodiment will be omitted, and different configurations and the like will be described. For configurations and the like that have not been explained, the above description in the first embodiment will be incorporated.

As shown in FIG. 6, the pumping system 1B of the second embodiment includes a guide pipe 10 (guide pipe portion) having a double pipe structure and an auxiliary ejection nozzle portion 60, and the like, and the pumping system 1B of the first embodiment is provided. Is different from.

As shown in FIGS. 6 and 7, the guide pipe 10 has a double pipe structure. The guide pipe 10 includes a first guide pipe 10A arranged inside and a second guide pipe 10B arranged outside. The first guide pipe 10A is a guide pipe having a smaller diameter and a shorter length than the second guide pipe 10B. The first guide pipe 10A is arranged so that the end portion (water intake portion 11A) on the seabed WA side projects downward from the lower end of the second guide pipe 10B. Further, the upper end (water discharge portion 12A) of the first guide pipe 10A is located in the second guide pipe 10B.

The first guide pipe 10A has a first intake portion 11A and a first water discharge portion 12A. In this embodiment, the first guide pipe 10A functions centrally on the pumped surface.
The ejection nozzle portion 30 is arranged in the first guide pipe 10A. The ejection nozzle portion 30 ejects the compressed air Pa and Pb upward. The configuration and operation of the ejection nozzle portion 30 are as described in the first embodiment.

The first water discharge portion 12A is arranged in the second guide pipe 10B. The bubble group B and the deep sea water (seawater W) that move upward in the hollow portion 17 of the first guide pipe 10A are discharged from the first discharge portion 12A to the hollow portion 18 of the second guide pipe 10B.

The second guide pipe 10B has a second water intake part 11B and a second water discharge part 12B arranged on the sea surface WB side with respect to the first water discharge part 12A. The second guide pipe 10B is a pipe member that is arranged outside the first guide pipe 10A and is longer than the first guide pipe 10A.

An auxiliary ejection nozzle portion 60 is arranged in the second guide pipe 10B.
Further, in the present embodiment, the compressed air supply unit 20 further includes a third compressed air supply unit 20c that supplies compressed air Pc having a third air pressure lower than the first air pressure to the auxiliary ejection nozzle unit 60.

The auxiliary ejection nozzle portion 60 is arranged in an annular hollow portion 19 formed between the first guide pipe 10A and the second guide pipe 10B when viewed from the vertical direction. The auxiliary ejection nozzle portion 60 is configured to have a plurality of ejection ports formed at predetermined intervals in an annular pipe when viewed from the vertical direction. The structure of the auxiliary ejection nozzle portion 60 and the like are not particularly limited, and for example, a plurality of ejection holes may be arranged side by side at predetermined intervals.

The auxiliary ejection nozzle unit 60 ejects the compressed air Pc of the third air pressure supplied from the third compressed air supply unit 20c upward. In the present embodiment, the third air pressure is an atmospheric pressure smaller than the first air pressure. Further, in the present embodiment, the third air pressure is, for example, the same atmospheric pressure as the second air pressure (compressed air can be supplied from the same compressor or compression tank). The third air pressure is appropriately adjusted according to the water pressure, and is not particularly limited, but can be adjusted to, for example, 5 to 10 times the water pressure. Here, the ratio of each air pressure (in Nm ³ (normal lube)) can be exemplified by 1st atmospheric pressure: 2nd atmospheric pressure: 3rd atmospheric pressure = 10: 2 to 3: 1 to 2.
When the auxiliary ejection nozzle portion 60 ejects the compressed air Pc having the third air pressure upward, a large number of bubble Bc groups are formed.

Specifically, as shown in FIG. 8B, compressed air Pc at a third atmosphere is ejected upward from the auxiliary ejection nozzle portion 60 to form a bubble Bc group. The bubble Bc group moves upward in the annular hollow portion 19 when viewed from the vertical direction. The bubble Bc group moves ascending in a state of being arranged in a ring shape when viewed from the vertical direction.

Then, as shown in FIG. 8C, the bubble Bc group moves from the hollow portion 18 to the hollow portion 18 of the second guide pipe 10B. In the hollow portion 18, the bubbles Ba and Bb groups that have moved up through the hollow portion 17 of the first guide pipe 10A join the hollow portion 18 of the second guide pipe 10B. As a result, in the hollow portion 18, the bubbles Ba and Bb groups are located in the central region when viewed from the vertical direction, and the bubbles Bc are located in the outer peripheral region of the bubble Ba and Bb groups (so as to surround them) on the sea surface WB side. Move up. Here, the bubble Bc is a bubble having a smaller diameter than the bubble Ba.

According to the present embodiment, in the hollow portion 17 of the first guide pipe 10A, as in the first embodiment, the bubble B (cells) B ( The straightness in the ascending movement of the Ba, Bb) group is improved. According to the present embodiment, in the hollow portion 18 of the second guide pipe 10B, the bubbles B (Ba, Bb, Bc) The straightness in the ascending movement of the group is improved. By improving the straightness of the bubble group, the pumping water of the deep sea water (seawater W) in the pumping system 1B is improved.

Specifically, as described above, the bubble Ba expands as it rises, its volume increases, and the rate of rise also increases. It is suitable from the viewpoint of water pumping. However, in addition to the resistance of water, the ascending speed of the bubble Ba may decrease due to splitting or deformation due to contact with the inner side surfaces of the guide pipes 10A and 10B. In this case, the pumping water will be reduced.
The bubble Bb is located between the inner surface of the first guide pipe 10A and the bubble Ba, and suppresses the collision of the bubble Ba with the inner surface of the first guide pipe 10A. Further, the bubble Bb rises at a position between the inner side surface of the first guide pipe 10A and the bubble Ba, and suppresses the fluctuation of the bubble Ba at the time of rising.

Further, the bubble Bc group ejected from the auxiliary ejection nozzle portion 60 rises at least located between the bubble Ba group and the inner surface of the second guide pipe 10B, and the bubble Ba rises inside the second guide pipe 10B. Suppresses collision with the side surface. The bubble Bc is located between the inner surface of the second guide pipe 10B and the bubble Ba, and suppresses the collision of the bubble Ba with the inner surface of the guide pipe 10B. Further, the bubble Bc rises at a position between the inner surface of the guide pipe 10B and the bubble Ba, and suppresses the fluctuation of the bubble Ba at the time of rising.

Subsequently, the pressure buffer window 70 that further suppresses the collision of the bubble Ba with the inner side surfaces of the guide pipes 10A and 10B will be described with reference to FIGS. 7A and 7B.
As shown in FIG. 7A, the plurality of pressure buffer windows 70 are formed in the first guide pipe 10A. In the present embodiment, the plurality of pressure buffer windows 70 are formed at predetermined intervals in the vertical direction. Further, the plurality of pressure buffer windows 70 are formed at predetermined intervals in the circumferential direction of the first guide pipe 10A.

As shown in FIG. 7B, each of the plurality of pressure buffer windows 70 has a hollow portion 17 of the first guide pipe 10A and an annular hollow portion 19 between the first guide pipe 10A and the second guide pipe 10B. Communicate with. Each of the plurality of pressure buffer windows 70 is configured to allow movement of the seawater W and / or the bubbles Ba, Bb ascending through the hollow portion 17 inside the first guide pipe 10A to the annular hollow portion 19. As a result, the pressure buffer window 70 alleviates vibrations and local pressure rises that may occur due to a group of bubbles generated by ejecting compressed air into the first guide pipe 10A, a rise in seawater W, and the like.

Further, the plurality of pressure buffer windows 70 are configured so that the seawater W rising in the annular hollow portion 19 can move to the hollow portion 17 of the first guide pipe 10A. Due to the speed difference between the ascending speed of the seawater W rising in the hollow portion 17 inside the first guide pipe 10A and the ascending speed of the seawater W moving in the annular hollow portion 19, the ascending speed of the seawater W moves through the plurality of pressure buffer windows 70. Seawater W is taken into the hollow portion 17 of the first guide pipe 10A from the annular hollow portion 19. The taken-in seawater W rises along the inner surface of the first guide pipe 10A and suppresses the collision of the bubble Ba with the inner surface of the first guide pipe 10A in the same manner as the bubble Bb.

Here, the pressure buffer function and the like can be adjusted by adjusting the size, number, and position of the pressure buffer windows 70. Further, by adjusting the opening and closing of the lower opening 70a and / or the upper opening 70b in the pressure buffer window 70, the pressure buffer function and the like can be adjusted in the same manner.

As shown in FIGS. 6 and 8 (a), the subdivision portion 40 is arranged in the water discharge portion 12B of the second guide pipe 10B. The subdivision unit 40 subdivides the rising and moving bubbles B (Ba, Bb, Bc) so that the diameter becomes smaller. The bubble group B moves upward while increasing its diameter. The subdivision unit 40 subdivides the bubble B group having a large diameter so as to have a small diameter. In the present embodiment, the subdivision portion 40 is arranged at the water discharge portion 12B of the second guide pipe 10B, but is not limited to this, and is a predetermined position on the second water discharge portion 12B side in the second guide pipe 10B or. It may be arranged between the second flood portion 12B and the sea surface WB. The configuration and action of the subdivision unit 40 are as described in the above-described first embodiment.

Subsequently, the pumping system 1D in the third embodiment will be described with reference to FIG. FIG. 9 is a diagram illustrating a pumping system according to the third embodiment. The configuration and the like similar to those of the first or second embodiment will be omitted, and different configurations and the like will be described. For configurations and the like that have not been explained, the above description in the first and second embodiments will be incorporated.

As shown in FIG. 9, the pumping system 1D in the third embodiment has a configuration in which the pumping system 1B of the second embodiment and the pumping system 200 using the submersible pump 120 are combined. The pumping system 1D in the third embodiment is configured to be able to switch / simultaneously use the pumping system 1B of the second embodiment and the pumping system 200 using the submersible pump 120. The pumping system 1D is configured so that the pumping system 1B of the second embodiment and the pumping system 200 using the submersible pump 120 can be switched. In the pumping system 1D, when pumping is continued for a long period of time, the pumping system 200 using the submersible pump 120 is operated. Further, in the pumping system 1D, when rapid and large amount of pumping is performed for a short period of time, the pumping system 1B of the second embodiment is operated.

The water pumping system 1D includes a water pumping system 1B of the second embodiment arranged on the lower side in the vertical direction and a water pumping system 200 using a submersible pump arranged on the upper side in the vertical direction. The configuration and operation of the pumping system 1B are as described in the second embodiment described above.

The pumping system 200 is arranged vertically above the subdivision portion 40 in the second guide pipe 10B of the pumping system 1B.
The pumping system 200 includes a third guide pipe 10C continuously arranged in the second guide pipe 10B, a submersible pump 120 arranged in the hollow portion 160 of the third guide pipe 10C, and deep water pumped by the submersible pump 120. It has a pumping pipe 130 capable of spraying (seawater W) on the sea surface WB.

The third guide pipe 10C is continuously arranged on the second water discharge portion 12B side of the second guide pipe 10B. In the present embodiment, the third guide pipe 10C is a guide pipe having the same diameter that is continuously arranged at the upper end of the second guide pipe 10B. The third guide pipe 10C may be integrally configured with the second guide pipe 10B, or may be connected as a separate body. In the present embodiment, the upper end side of the third guide pipe 10C (the end opposite to the second water discharge portion 12B) is arranged so as to be located above the sea level WB. The upper end side of the third guide pipe 10C is arranged so as to project from above the sea surface WB.
Here, the third guide pipe 10C has a water discharge portion (not shown) formed at a position below the sea level WB. The water discharge unit (not shown) discharges the deep sea water (seawater W) discharged from the second water discharge unit 12B of the second guide pipe 10B to the outside of the third guide pipe 10C in a state where the submersible pump 120 is not operating.

The submersible pump 120 is arranged in the hollow portion 160 of the third guide pipe 10C. The submersible pump 120 is arranged below the sea level WB by a predetermined distance. The submersible pump 120 discharges the seawater W to the outside of the third guide pipe 10C. Specifically, the submersible pump 120 sends the deep sea water (seawater W) discharged from the second water discharge portion 12B onto the sea surface WB via the pumping pipe 130. The submersible pump 120 is configured so that operation / stop can be appropriately switched. The submersible pump 120 stops the operation when the pumping system 1B for pumping deep sea water (seawater W) is in operation due to the rise of bubbles B due to the ejection of compressed air, and the pumping system 1B is stopped. In some cases, it may be switched to start the operation.

The pumping pipe 130 is configured so that deep sea water (seawater W) pumped by the submersible pump 120 can be sprayed on the sea surface WB. In the present embodiment, the pumping pipe 130 has a vertical pipe 131 arranged so as to extend in the vertical direction, and a plurality of horizontal pipes 132 arranged so as to extend horizontally from the upper end of the vertical pipe 131. The horizontal pipe 132 is formed at an end and has a spray port 132a for spraying deep sea water (seawater W) on the sea surface WB.

Here, in the pumping system 1D, the seawater W in the third guide pipe 10C is discharged to the outside of the third guide pipe 10C by the submersible pump 120, so that the internal sea level WC which is the seawater surface in the third guide pipe 10C is changed. , Will be located vertically below the sea level WB. In the pumping system 1D, by locating the internal sea level WC vertically below the sea level WB, a pressure difference can be generated and water intake from the water intake units 11A and 11B can be promoted.

According to the present embodiment, the pumping system 1D includes a pumping system 1B and a pumping system 200 for pumping water by different methods. According to the present embodiment, in consideration of the pumping amount, the pumping speed, the energy efficiency, etc., in the pumping system 1D, only the pumping system 1B is operated, only the pumping system 200 is operated, and both the pumping system 1B and the pumping system 200 are operated. It can be selected as appropriate. The pumping system 1D is configured to be able to flexibly respond to the pumping amount, pumping speed, energy efficiency, and pumping purpose.

According to the pumping system of the first to third embodiments described above, the following effects are obtained.
The pumping system of the above-described embodiment includes a guide pipe portion, a ejection nozzle portion that ejects compressed air to generate bubbles, and a subdivision portion that subdivides the diameter of the bubbles moving in the guide pipe portion into small pieces. ..
As a result, the pumping system can directly pump the seawater on the seabed side to the sea surface side by utilizing the ascending movement of bubbles in the guide pipe, and can reduce the diameter of the bubbles before reaching the sea surface. .. In addition, the pumping system reduces the diameter of the bubbles before they reach the sea surface, thereby suppressing the effects and stress on the sea surface and the area around the water discharge part. Pumping systems can increase dissolved oxygen in the surface region by reducing the diameter of the bubbles before they reach sea level.

Further, in the pumping system, the compressed air supply unit includes a first compressed air supply unit that supplies compressed air with a first air pressure and a second compression unit that supplies compressed air with a second air pressure that is lower than the first air pressure. It has an air supply unit. Further, the ejection nozzle portion includes the first ejection portion (high pressure) that ejects the compressed air of the first air pressure from the first compressed air supply portion, and the outer periphery of the first ejection portion in the radial direction of the guide pipe portion. It is arranged so as to surround the first ejection portion, and has a second ejection portion (medium / low pressure) for ejecting compressed air having a second air pressure from the second compressed air supply portion.
As a result, the pumping system (spout nozzle portion) is a group of bubbles that move seawater to the sea surface side by the ejected compressed air, and is a group of first bubbles formed by the compressed air ejected from the first ejection part. The compressed air ejected from the second ejection portion generates a second bubble group formed so as to surround the outer periphery of the first bubble group and having a diameter smaller than the (average diameter) of the first bubble group. As a result, the straightness in the ascending movement of the bubble group is improved.
The second bubble is located between the inner surface of the guide pipe and the first bubble, and suppresses the collision of the first bubble with the inner surface of the guide pipe. Further, since the second bubble is located between the inner surface of the guide pipe and the first bubble and rises, the fluctuation at the time of rising in the first bubble is suppressed. This improves pumping (speed, efficiency, etc.) in the pumping system.

Further, in the pumping system, the ejection nozzle portion has a double pipe structure, and has a first pipe portion arranged inside and a second pipe portion arranged outside. The first ejection portion includes a first hollow portion of the first pipe portion and a first ejection port formed at an end portion of the first hollow portion on the sea surface side. Further, the second ejection portion is formed at the second hollow portion formed between the second pipe portion and the first pipe portion, which is annular when viewed from the vertical direction, and at the end portion of the second hollow portion on the sea surface side. It is configured to have a second spout that is annular when viewed from the vertical direction.
As a result, the pumping system can form a group of bubbles having a simple structure and high straightness.

Further, in the pumping system, the guide pipe portion has a double pipe structure and is arranged inside, and is arranged outside the first guide pipe having the first intake portion and the first water discharge portion. It has two water intake parts, a second water discharge part arranged on the sea surface side of the first water discharge part, and a second guide pipe (longer than the first guide pipe). Further, the ejection nozzle portion is arranged in the first guide pipe. Further, the subdivided portion is arranged at a predetermined position on the side of the second discharge portion in the second guide pipe or between the second discharge portion and the sea surface.
As a result, the pumping system is configured to be able to maintain high straightness over long distances. This also allows the pumping system to reduce the diameter of the bubbles before they reach sea level.

Further, the pumping system further includes an auxiliary ejection nozzle portion formed between the first guide pipe and the second guide pipe and arranged in an annular hollow portion when viewed from the vertical direction. Further, the compressed air supply unit further includes a third compressed air supply unit that supplies compressed air having a third air pressure lower than the first air pressure to the auxiliary ejection nozzle unit.
The third bubble is located between the inner surface of the second guide pipe and the first bubble, and suppresses the collision of the first bubble with the inner surface of the second guide pipe. Further, since the third bubble is located between the inner surface of the second guide pipe and the first bubble and rises, the fluctuation at the time of rising in the first bubble is suppressed. As a result, the pumping system is configured to be able to maintain high straightness over long distances.

The pumping system has a plurality of pressure buffer windows that communicate the hollow portion of the first guide pipe and the annular hollow portion between the first guide pipe and the second guide pipe. As a result, the pumping system alleviates vibrations and local pressure rises that may occur due to the rise of air bubbles and seawater W caused by the ejection of compressed air into the first guide pipe. Further, in the pumping system, seawater taken in through a plurality of pressure buffer windows rises along the inner surface of the first guide pipe, and the collision of the first bubble with the inner surface of the first guide pipe can be suppressed. Is.

In addition, the pumping system has a third guide pipe that is continuously arranged on the second outlet side of the second guide pipe and a seawater that is arranged in the third guide pipe and that discharges seawater from the second outlet on the sea surface. Further includes a submersible pump unit for sending to.
As a result, the pumping system is configured to be capable of pumping while appropriately switching between a pumping system using the ascending movement of bubbles and a pumping system using a submersible pump.
Further, in the pumping system, the submersible pump is arranged vertically below the sea level in the third guide pipe by a predetermined distance. Due to the operation of the submersible pump, the position of the internal sea level WC is positioned vertically below the sea level WB. Thereby, the pumping system can promote the intake of water from the intake portion by utilizing the pressure difference between the internal sea surface and the sea surface.

Further, in the pumping system, the subdivided portion is configured to have one subdivided member or a plurality of subdivided members arranged apart from each other by a predetermined distance in the vertical direction.
As a result, the pumping system can disperse the load such as the impact that the bubble group gives to the subdivided portion. In addition, the pumping system can subdivide the bubbles into smaller diameters by subdividing the bubbles in multiple stages.

The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are included in the present invention.

1 Pumping system 10 Guide pipe 11 Intake part 12 Water discharge part 20 Compressed air supply part 30 Ejection nozzle part 31 First ejection part 33 Second ejection part 40 Subdivision part 100 Ship B Bubble Pa Compressed air (1st atm)
Pb compression pressure (second pressure)
W Seawater WA Seabed WB Sea level

Claims (14)

A guide pipe part having an intake part arranged on the seabed side and a water discharge part arranged on the sea surface side and arranged so as to pump seawater on the seabed side to the sea surface side, and a guide pipe part arranged so as to extend substantially vertically.
An ejection nozzle portion that is arranged in the guide pipe portion or below the intake portion and that ejects compressed air to form a group of bubbles that move upward in the guide pipe portion.
A compressed air supply unit that supplies compressed air to the ejection nozzle unit,
A bubble that is arranged at a predetermined position on the water discharge portion side in the guide pipe portion or between the water discharge portion and the sea surface and moves to the sea surface side in the guide pipe portion or a bubble that moves from the water discharge portion to the sea surface side has a diameter. A pumping system having a subdivided portion that is subdivided so as to be smaller. The compressed air supply unit
The first compressed air supply unit that supplies compressed air with the first air pressure,
It has a second compressed air supply unit that supplies compressed air having a second air pressure that is lower than the first air pressure.
The ejection nozzle portion is
A first ejection unit that ejects compressed air of the first air pressure from the first compressed air supply unit, and a first ejection unit.
A claim having a second ejection portion arranged so as to surround the outer periphery of the first ejection portion in the radial direction of the guide pipe portion and ejecting compressed air of the second air pressure from the second compressed air supply portion. Item 1. The pumping system according to item 1. The ejection nozzle portion has a double pipe structure, and has a first pipe portion arranged inside and a second pipe portion arranged outside.
The first ejection portion is configured to include a first hollow portion of the first pipe portion and a first ejection port formed at an end portion of the first hollow portion on the sea surface side.
The second ejection portion is formed at a second hollow portion formed between the second pipe portion and the first pipe portion, which is annular when viewed from the vertical direction, and at an end portion of the second hollow portion on the sea surface side. The pumping system according to claim 2, further comprising a second spout that is annular when viewed from the vertical direction. The ejection nozzle portion is a group of bubbles that move seawater to the sea surface side by the ejected compressed air.
The first bubble group formed by the compressed air ejected from the first ejection portion and
2. Or the pumping system according to 3. The second bubble group ejected from the second ejection portion rises located between the first bubble group and the inner side surface of the first guide pipe portion, and the first bubble is inside the guide pipe portion. The pumping system according to claim 4, wherein the pumping system suppresses collision with the side surface. The guide pipe portion has a double pipe structure and has a double pipe structure.
A first guide pipe arranged inside and having a first intake part and a first water outlet part,
It has a second guide pipe that is arranged on the outside and has a second water intake part and a second water discharge part that is arranged on the sea surface side of the first water discharge part.
The ejection nozzle portion is arranged in the first guide pipe, and the ejection nozzle portion is arranged in the first guide pipe.
The pumping system according to any one of claims 2 to 5, wherein the subdivided portion is arranged at a predetermined position on the side of the second discharge portion in the second guide pipe or between the second discharge portion and the sea surface. .. An auxiliary ejection nozzle portion formed between the first guide pipe and the second guide pipe and arranged in an annular hollow portion when viewed from the vertical direction is further provided.
The compressed air supply unit
The pumping system according to claim 6, further comprising a third compressed air supply unit that supplies compressed air having a third air pressure lower than the first air pressure to the auxiliary ejection nozzle unit. The auxiliary ejection nozzle portion is a group of bubbles that move seawater to the sea surface side by the ejected compressed air.
The seventh aspect of claim 7, wherein at least a third bubble group formed so as to surround the outer circumference of the first bubble group formed by the compressed air ejected from the first ejection portion in the second guide pipe is generated. Pumping system. The third bubble group ejected from the auxiliary ejection nozzle portion rises at a position between the first bubble group and the inner surface of the second guide pipe, and the first bubble rises between the first bubble group and the inner side surface of the second guide pipe. The pumping system according to claim 8, which suppresses collision with the inner surface. The first guide pipe is a plurality of shock absorbing windows that communicate the inside of the guide pipe with the hollow portion.
Bubbles and / or seawater rising inside the first guide pipe can move to the hollow portion, and seawater rising inside the hollow portion can move inside the first guide pipe. The pumping system according to claim 8 or 9, further comprising a plurality of shock absorbing windows. A third guide pipe that is continuously arranged on the second water outlet side of the second guide pipe,
The pumping system according to any one of claims 5 to 10, further comprising a submersible pump unit arranged in the third guide pipe and sending seawater discharged from the second water discharge unit to the sea surface side or above the sea surface surface. The third guide pipe is arranged so that the end opposite to the second water discharge portion is located above the sea surface.
The submersible pump unit is arranged below the sea surface by a predetermined distance, and discharges seawater to the outside of the third guide pipe.
The internal sea level, which is the sea level in the third guide pipe, is located below the sea level by discharging the seawater in the third guide pipe to the outside of the third guide pipe by the submersible pump unit. The pumping system according to claim 11, wherein a pressure difference is generated by locating the internal sea surface below the sea surface in the vertical direction, and water intake from the water intake unit is promoted. The pumping system according to any one of claims 1 to 12, wherein the subdivided portion includes one subdivided member or a plurality of subdivided members arranged vertically separated from each other by a predetermined distance. .. The compressed air supply unit
An air compressor mounted on a ship and one or more tanks containing compressed air,
The pumping system according to any one of claims 1 to 13, further comprising a supply pipe portion for supplying compressed air contained in the one or a plurality of tanks to the ejection nozzle portion.

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