JP4678992B2 - Sea water pumping device and ocean fertilizer using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seawater pumping device for pumping seawater from a predetermined depth and a marine fertilizer using the same.
[0002]
[Prior art]
Deep sea water is characterized by its low temperature and cleanliness and richness in nutrient salts such as nitrates, silicates, and phosphates. It has been used for various purposes such as drinking water and fish farms by fertilizing the ocean.
[0003]
As for the structure to draw deep ocean water, the deep water intake pipe extending from the onshore facility to the specified depth is drawn up, or the deep water intake pipe that reaches the specified depth is suspended from the ship floating on the ocean or the dedicated floating structure. What is pumped up is known.
[0004]
[Problems to be solved by the invention]
However, if the deep water intake pipe is extended from the onshore facility to the specified depth and pumped up, the construction cost is high because several kilometres long deep water intake pipe is required depending on the construction and installation location of the onshore facility. However, there is a problem that the amount of water intake is limited due to the strong restriction on the diameter of the deep water intake pipe.
[0005]
In addition, when a deep water intake pipe that reaches a predetermined depth is dropped from a ship or a special floating structure, the floating structure is swayed by waves, so the deep water intake pipe that is suspended from the floating structure and its attachment Therefore, there is a problem in that the size is increased and the manufacturing cost is high.
[0006]
The present invention has been made in view of the above problems, and can be installed on the ocean by eliminating the effects of waves as much as possible, and can be constructed at low cost, and a marine fertilizer using the same. An object of the present invention is to provide a device.
[0007]
[Means for Solving the Problems]
The seawater pumping device of the present invention that achieves the above object is a tubular tube tower having a pumping mechanism and having a pumping mechanism at the top center of a sealable device body that is not submerged and at least the upper end always protruding above the sea surface. And a seawater intake pipe reaching a predetermined depth is suspended and connected to the lower end of the apparatus main body, and the buoyancy adjusting means can adjust the buoyancy by injecting / draining seawater in the circumferential direction around the outside of the apparatus main body the ballast tanks to be provided, the by buoyancy adjustment by injection and discharge of seawater into the ballast tank by buoyancy adjusting means, pumping nutrients through the seawater intake pipe by positioning the apparatus body below the water surface a predetermined depth during the action It is configured to pump up seawater containing water and to be able to position the apparatus main body on the water surface during maintenance and inspection.
[0009]
Furthermore, as a marine fertilizer using the seawater pumping device, the device body is provided with a water outlet that is formed of two flow path plates spaced apart from each other and opens in a substantially horizontal circumferential direction. Adjusting means, and adjusting the temperature of seawater containing nutrient salts pumped through the seawater intake pipe to a predetermined temperature by the temperature adjusting means, the substantially horizontal circumferential direction from the outlet in the light layer of a predetermined depth It is configured to discharge to the entire area .
[0010]
Further, the apparatus main body is provided with a surface layer water intake mechanism having a surface water intake opening opened at an upper portion, and the temperature adjusting means is configured to supply the surface water taken in by the surface layer water intake mechanism and the pumped nutrient salts. It is configured to adjust the temperature by mixing with the contained seawater.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0012]
FIG. 1 is a front view showing an external appearance of a configuration example of an ocean fertilizer using a seawater pumping device according to the present invention, and FIG. 2 is a plan view thereof.
[0013]
The illustrated marine fertilizer 1 has a tube tower 20 having a predetermined height on the upper side of a main body 10 serving as a substantially disk-shaped device having a predetermined thickness, and a deep layer as an ocean intake pipe on the lower side. A water intake pipe 30 is connected to form a so-called top-like shape, and the surface water taken in through the tube tower 20 and the deep water containing nutrient salts pumped through the deep water intake pipe 30 are mixed. The temperature is adjusted and discharged and diffused as a density current on the side of the surroundings, forming an artificial upwelling flow and creating a new fishing ground there.
[0014]
The main body 10 is a longitudinal cross-sectional view of FIG. 3, FIG. 4A is a cross-sectional view of AA in FIG. 1, FIG. 4B is a cross-sectional view of BB, and is a cross-section CC of FIG. 4 (C) which is a diagram, FIG. 5 which is a DD sectional view of FIG. 1, and FIG. 6 which is a EE sectional view of FIG. 1, an equipment room having a predetermined volume and an octagonal plan shape. A ballast tank 12 as a buoyancy adjusting means is disposed around 11 and a weight chamber 13 is provided on the lower side.
[0015]
The equipment room 11 is a planar octagon, has a predetermined volume, is configured to be sealed so as not to be submerged even when submerged at a predetermined depth, and has a water intake conduit 14 penetrating vertically in the center. Yes. Although not shown in detail, a control device is installed to control various devices and devices included in the marine fertilizer 1 automatically or based on a command sent from a command facility on land via wireless communication. Yes.
[0016]
The ballast tank 12 has the same height (thickness) as the equipment room 11 and is formed with a uniform width on the entire outer periphery of the equipment room 11. Therefore, the entire outer shape of the main body 10 is formed by the ballast tank 12. It has a large octagonal shape similar to the chamber 11. The inside is divided into trapezoidal compartments 12B corresponding to the outer sides of the equipment room 11 by the partition walls 12A, and seawater is injected into and drained from the respective compartments 12B by a ballast pump (not shown). The overall buoyancy can be adjusted by the amount of water injected. The adjustment range of the buoyancy balance by pouring and draining into the ballast tank 12 is such that the upper surface of the main body 10 floats at a predetermined height above the water surface when the buoyancy is greatest, and the main body is submerged when the buoyancy is the smallest. Set to Pouring and draining into the ballast tank 12 is performed by controlling and driving the ballast pump by a control device provided in the equipment room 11. The planar shape of the main body 10 is not limited to an octagon, but may be another polygon or a circle, and is more preferably a circle when resistance due to tidal current is taken into consideration.
[0017]
On the upper side of the equipment room 11, a flow path plate 15 is disposed at a predetermined distance from the top plate (the equipment room upper structural board 11A) of the equipment room 11, and this flow path board 15 and the equipment room upper structural board are disposed. Between 11A, the discharge channel 16 of the predetermined thickness which the water discharge port 16A opens in the circumferential direction whole region is formed.
[0018]
At the center of the plane of the discharge passage 16, an impeller 42 is provided in a pump casing 41 formed continuously with the flow path plate 15 and the equipment room upper structure plate 11A, thereby forming a discharge pump 40 as a pumping mechanism. ing.
[0019]
The pump casing 41 is continuously connected to the discharge passage 16 at all sides thereof, the lower end of the tower pipe section 20 (tubular body 21) is connected to the upper suction port 41U, and the lower suction port 41L is connected to the equipment chamber 11. A water pipe 14 is connected.
[0020]
The impeller 42 includes an upper impeller 42U on the tube tower 20 side (upper suction port 41U side) and a lower impeller 42L on the deep water intake pipe 30 side (lower suction port 41L side). The rotation axis of the pump motor 43 disposed in the tube tower 20 directly above the rotation axis is provided so that the section is aligned with the center of the discharge passage 16 in the height (thickness) direction and is rotatable about the vertical axis. It is connected to.
[0021]
The pump motor 43 is a water-tight type electric motor, and generates power by an internal combustion engine provided in the upper deck 22 of the tube tower section 20 described later, ocean temperature difference power generation, wind power generation, wave power generation, and solar power generation. The impeller 42 is driven to rotate by being driven by electric power obtained by a single or a combination of power generation means. The rotation control is performed by a control device in the equipment room 11.
[0022]
The discharge pump 40 having the above configuration takes in the surface water from the tube tower 20 by the rotation of the impeller 42 by the pump motor 43, pumps the deep water through the deep water intake pipe 30, mixes it, and discharges it to the discharge passage 16. . The intake / discharge amount and the mixing ratio of the surface water and the deep water are determined by the rotational speed of the impeller 42 and the blade shape, but the mixing ratio is set so that the temperature of the discharged water is substantially equal to the water temperature in the discharge area (that is, the density is Set to be approximately equal). That is, in this configuration, the temperature of the discharged water is adjusted by mixing the surface water taken in through the tube tower section 20 with the deep water pumped up through the deep water intake pipe 30. The tower portion 20 and the discharge pump 40 (upper impeller 42U) constitute the surface layer water intake mechanism in the present application, and thus also constitute the temperature adjusting means.
[0023]
The weight chamber 13 has a planar shape corresponding to the device chamber 11 and is formed at a predetermined height, and a concrete 13A is filled in a predetermined thickness to obtain a predetermined weight. This is for maintaining the attitude of the marine fertilizer 1 even if the deep water intake pipe 30 is lost, and is set to a weight that is necessary and sufficient for that purpose. In addition, a water intake conduit 14 continuing from the equipment chamber 11 passes through the center of the weight chamber 13.
[0024]
The tube tower 20 has a tubular body 21 in which a generator or the like using an internal combustion engine such as a diesel engine is housed in an upper end of a tubular body 21 having a predetermined diameter and a predetermined length, and a communication antenna or the like is provided in the upper portion. The upper deck 22 having a diameter larger than 21 and having a predetermined height is provided, and the lower end of the tubular body 21 is connected to the upper suction port 41U of the discharge pump 40. As shown in FIGS. 4 (A) and 4 (B), a tube tower passage 23 that occupies a part in the cross section extends in the longitudinal direction inside the tubular main body 21. The upper end of the section passage 23 communicates with the inside of the upper deck 22 through a hatch, and the lower end communicates with a passage 51 in the tube tower base section described later through the hatch. In addition, a landing site 24 is provided at an outer surface position corresponding to the sea level during operation, which will be described later, and a plurality of surface water intakes 25 are formed in the circumferential direction at positions where the predetermined water depth is obtained during operation.
[0025]
A large-diameter base 50 thicker than the tubular main body 21 is constructed at a predetermined height at the connection base to the main body 10 of the tube tower 20. Between the inner surface of the large-diameter base 50 and the outer surface of the tubular main body 21, ribs are arranged in the circumferential direction and vertically at predetermined intervals, and these ribs circumferentially and vertically move the internal space between the outer side of the tubular main body 21. Although divided into a plurality of directions, one circumferential space in the circumferential direction communicates vertically through a hatch, and this is a tube tower base passage 51. As described above, the upper end of the tube tower base passage 51 communicates with the tube tower passage 23 via a hatch, and the lower end thereof has a passage 52 formed through the discharge passage 16 only in the portion. To the equipment room 11.
[0026]
The deep water intake pipe 30 is a tube having a predetermined diameter and a predetermined length, and an upper end of the deep water intake pipe 30 is connected to the lower part of the main body 10 (the lower surface of the weight chamber 13) and connected to the intake pipe 14. Its lower end is set to reach the deep water area (for example, from 500m to 600m) where water is taken, and a chain 31 for balance adjustment is suspended around the lower end opening to secure it to the seabed. It has not been done. For this reason, the deep water intake pipe fixed to the seabed does not obstruct the swinging of the main body part 10 or cause damage due to it. Further, the installation position can be easily moved.
[0027]
The marine fertilizer 1 configured as described above floats in a posture in which the central axis is vertical depending on the weight of the weight chamber 13 and the deep water intake pipe 30 at sea or in the sea. It is moored on the sea floor by a mooring line 2 such as a chain coupled to a certain ballast tank 12 site and installed in a predetermined sea area. The length of the mooring line 2 is set so as to allow sea level change due to tides and depth adjustment of the marine fertilizer 1.
[0028]
At the time of deep water pumping and discharging operation, as shown in FIG. 7 (A), the outlet 16A is located at a predetermined discharge depth (for example, water depth 30 m) in the lighted layer by adjusting the buoyancy by pouring water into the ballast tank 12. Since the water outlet 16A is located at the upper part of the main body part 10 in this floating state, the main body part 10 is submerged at a predetermined depth in the sea in this installation state, and surface water is formed in the tubular main body 21 of the tube tower part 20 so as to be opened. The intake 25 has a predetermined depth, and the upper end of the tube tower 20 protrudes to a predetermined height on the sea surface so that only the upper deck 22 is positioned on the sea surface.
[0029]
Then, the surface water taken in from the tube tower 20 by driving the discharge pump 40 and the deep water pumped up through the deep water intake pipe 30 are mixed, and the deep water whose temperature is adjusted to substantially the same temperature is opened to the entire circumference. It is discharged from the water outlet 16A to 360 degrees in the entire circumferential direction. The discharged deep water diffuses horizontally in the light layer as a density current, and promotes the growth of phytoplankton by its nutrition, and as a result, a fishing ground can be created in a natural environment. In addition, the discharge direction of the deep water may be set only in an arbitrary direction, not the entire circumference.
[0030]
Thus, since the main body 10 having a large volume is submerged at a predetermined depth below the surface of the water during operation, the water line area can be made extremely small, so that the influence of waves can be reduced and the shaking can be suppressed. As a result, stable installation is possible, and a load that acts on the structure such as the joint portion of the main body 10 and the deep water intake pipe 30 can be reduced, so that a highly safe one can be constructed small and light at low cost. Is.
[0031]
On the other hand, at the time of maintenance and inspection, the buoyancy is increased by draining from the ballast tank 12, and as shown in FIG. 7 (B), the main body portion 10 is floated so that the upper surface is on the water surface. Therefore, workability such as maintenance work becomes very good.
[0032]
In the above configuration example, the ballast tank 12 is disposed around the equipment room 11. However, the ballast tank 12 is not limited to this and may be disposed at the upper part or the lower part of the equipment room 11. . However, as in this configuration example, the floating shape can be stabilized by arranging it in the periphery and having a large planar shape, and at the time of maintenance inspection, it is possible to work on the upper surface and further away from the center. By coupling the mooring line to the outer surface , it is possible to easily resist the reaction caused by the rotation of the impeller 42 of the discharge pump 40.
[0033]
FIG. 8 shows a partial cross-sectional front view of an ocean fertilizer 1 ′ in which a ballast tank 12 ′ is provided around the lower side of the machine room 11. In the figure, parts having the same functions as those in the configuration example are given the same reference numerals. In the configuration shown in the drawing, the ballast tank 12 is disposed below a predetermined amount of the machine chamber 11 via a connecting portion 17 having a predetermined length depending from the outer edge of the machine chamber 11. The buoyancy adjustment range by the ballast tank 12 'is such that when the buoyancy is the highest, the upper surface of the ballast tank 12' floats at a predetermined height above the water surface, and when the buoyancy is the smallest, there is a water outlet 16A as in the above configuration example. The machine room 11 is set to be submerged so as to be located at a predetermined discharge depth in the optical layer. With this configuration, when the marine fertilizer 1 'is installed in the ocean, the main body 10 is floated on the sea surface with the upper surface of the ballast tank 12' on the water surface, and the ballast tank 12 'is used as a work table. The operation of connecting the deep water intake pipe 30 to the lower part of the machine room 11 can be performed. That is, it is not necessary to mount the main body unit 10 on the work table ship and connect the deep water intake pipe 30 and the work table ship is unnecessary, so that the installation cost can be reduced.
[0034]
Further, the other configurations are not limited to the above configuration example and can be changed as appropriate. That is, the temperature adjusting means may adjust the temperature by heating the deep water pumped up by a heater or the like without mixing the surface water. The pumping mechanism may also use an air pump or a wave pump instead of the discharge pump 40 including the rotating impeller 42.
[0035]
Furthermore, the above configuration example has been described as an ocean fertilizer that diffuses and discharges deep water mixed with surface water, but the deep water pumped up is transported by a ship such as a tanker and is configured only as a seawater pumping device. It is good.
[0036]
【The invention's effect】
As described above, according to the seawater pumping apparatus according to the present invention , at least the upper end always protrudes above the sea surface at the center of the upper end of the sealable apparatus main body that has a pumping mechanism and is not submerged even if submerged. A tubular tube tower is provided, and a seawater intake pipe reaching a predetermined depth is suspended from the lower end of the apparatus body, and buoyancy is adjusted by injecting and draining seawater in the circumferential direction around the outside of the apparatus body. The buoyancy adjusting means is provided with a ballast tank, and the buoyancy adjustment by the buoyancy adjustment means by injecting and discharging seawater into the ballast tank, the apparatus main body is positioned at a predetermined depth below the water surface during the pumping operation, and the seawater intake pipe is Pumping up the seawater containing nutrients, and the device main body can be positioned on the water surface during maintenance and inspection. When the main body of the equipment to be pumped is submerged at a predetermined depth below the surface of the water, it is possible to reduce the influence of waves and suppress shaking, and as a result, stable installation is possible and the main body and deep water intake are The load acting on the structure such as the joint portion of the water pipe is small and has high safety, and can be constructed in a small size and at a low cost.
[0037]
In addition, the buoyancy adjusting means is configured by arranging a ballast tank in the circumferential direction around the outside of the apparatus main body, so that the planar shape can be enlarged and the floating posture can be stabilized. Work on the top surface is possible during maintenance inspection.
[0038]
Furthermore, as a marine fertilizer using the seawater pumping device, the device body is provided with a water outlet that is formed of two flow path plates spaced apart from each other and opens in a substantially horizontal circumferential direction. Adjusting means, and adjusting the temperature of seawater containing nutrient salts pumped through the seawater intake pipe to a predetermined temperature by the temperature adjusting means, the substantially horizontal circumferential direction from the outlet in the light layer of a predetermined depth By being configured to discharge to the entire area, the discharged deep water spreads horizontally as a density flow, and the nutrition it has can promote the growth of phytoplankton, resulting in the creation of a fishing ground in the natural environment. It is possible to do.
[0039]
Further, the apparatus main body is provided with a surface layer water intake mechanism having a surface water intake opening opened at an upper portion, and the temperature adjusting means includes the surface water taken in by the surface layer water intake mechanism and the pumped nutrient salts. By being configured to adjust the temperature by mixing with seawater, a large amount of deep water can be easily and quickly temperature-controlled and discharged.
[Brief description of the drawings]
FIG. 1 is a front view showing an external appearance of a configuration example of an ocean fertilizer using a seawater pumping device according to the present invention.
FIG. 2 is a plan view thereof.
FIG. 3 is a longitudinal sectional view of a main body.
4A is a cross-sectional view taken along the line AA in FIG. 1, FIG. 4B is a cross-sectional view taken along the line BB, and FIG. 4C is a cross-sectional view taken along the line CC.
FIG. 5 is a cross-sectional view taken along the line DD of FIG.
6 is a cross-sectional view taken along the line E-E in FIG. 1;
FIGS. 7A and 7B show the appearance of the installation state, in which FIG. 7A is during operation and FIG. 7B is during maintenance inspection.
FIG. 8 is a partial cross-sectional front view of a marine fertilizer of a different configuration example.
[Explanation of symbols]
1,1 'Marine fertilizer 10 Main body (device main body)
12, 12 'Ballast tank (buoyancy adjustment means)
16A Water outlet 20 Tube tower (surface water intake mechanism, temperature control means)
25 Surface water intake 30 Deep water intake pipe (seawater intake pipe)
40 Discharge pump (pumping mechanism, surface water intake mechanism, temperature control means)

Claims (3)

At the center of the upper end of the sealable device main body equipped with a pumping mechanism that does not become submerged even if submerged, a tubular tube tower at least at the upper end always protruding above the sea surface is provided. with seawater intake pipe is suspended connections leading to the depth provided the ballast tanks to be buoyant adjusting means capable of adjusting the buoyancy around the outside of the circumferential direction by the injection and drainage of seawater of the apparatus body, ballast by the buoyancy adjusting means By adjusting the buoyancy by injecting and discharging seawater into the tank, the device body is positioned at a predetermined depth below the surface of the water when pumping up, and the seawater containing nutrient salts is pumped through the seawater intake pipe, and at the time of maintenance inspection the device A seawater pumping device, characterized in that the main body can be positioned on the water surface. The apparatus main body is provided with a water outlet which is composed of two flow path plates spaced apart from each other and opens in a substantially horizontal circumferential direction, and is provided with temperature adjusting means, and the nutrient pumped up through the seawater intake pipe claims, characterized in that it is configured to discharge the entire circumferential direction of the substantially horizontally from the outlets in the photic zone in a predetermined depth thermostatted to a predetermined temperature by the temperature adjusting means seawater containing salt An ocean fertilizer using the seawater pumping device according to Item 1 . The apparatus main body is provided with a surface layer water intake mechanism having a surface water intake opening opened at an upper portion, and the temperature adjusting means includes the surface water taken in by the surface layer water intake mechanism and the pumped nutrient salt. The marine fertilizer according to claim 2 , wherein the apparatus is configured to adjust the temperature by mixing with seawater.

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