WO2007099651A1

WO2007099651A1 - Apparatus for marine production

Info

Publication number: WO2007099651A1
Application number: PCT/JP2006/304541
Authority: WO
Inventors: Shoichi Tanaka
Original assignee: Shoichi Tanaka
Priority date: 2006-03-02
Filing date: 2006-03-02
Publication date: 2007-09-07

Abstract

A water intake unit (1), which is located in the deep layer area of the sea, and a water discharge unit (3), which is located in the surface layer area of the sea, are fixed to the sea bottom. The water intake unit (1) is in the shape of a duct pipe into the opening of which the seawater flows. The water discharge unit (3) has an opening toward the flow-out direction of the seawater. Owing to this structure, the deep seawater is lifted up via a pumping pipe (2) connecting the water intake unit (1) to the water discharge unit (3) and nutrient salts are supplied in a large amount to the surface area of the sea. Owing to photosynthesis, carbon dioxide is fixed as planktons. Thus, useful marine organisms can be grown by using these planktons.

Description

Specification

Marine production equipment

Technical field

The present invention relates to a marine production apparatus arranged in the ocean. Technical background

In recent years, the problem of sea level rise due to an increase in the concentration of carbon dioxide in the atmosphere has been recognized as a serious problem for humankind to solve. As one solution, to reduce atmospheric carbon dioxide concentration, deep-sea water containing abundant nutrients is lifted up to the surface of the ocean to increase its plankton production and carbon dioxide in the atmosphere. It has been proposed to reduce the concentration. This method shall refer to the deep sea water lift-up device.

The following techniques have been proposed as prior art in this technical field.

Patent Document 1 Japanese Patent Laid-Open No. 200 1-323430

Patent Document 2 Japanese Patent Laid-Open No. 200 1-336479

Patent Document 3 Japanese Patent Laid-Open No. 6-225664

Patent Document 4 Japanese Unexamined Patent Publication No. 2000-295939

Patent Document 5 Japanese Unexamined Patent Publication No. 2000-273836

Patent Document 6 Japanese Patent Laid-Open No. 8_42275

Patent Document 7 JP-A-8-332994

Patent Document 1 proposes that a plate is disposed obliquely in the middle layer of the ocean where the ocean current flows, and the direction in which the ocean current flows is changed upward. Patent Document 2 proposes that a cylinder with a length of 500 meters or more is placed on the ocean and the upper part of the cylinder is heated indirectly by ocean surface water to reduce its specific gravity and lift deep sea water from the bottom of the cylinder. is doing. However, almost all ocean-type carbon dioxide absorption technologies remain at the idea stage.

The first reason is that this type of large-scale marine production equipment installed on the surface of the ocean is a problem unique to the marine environment, although the installation itself is relatively easy due to the use of buoyancy. This is because the cost of installing and maintaining the marine production equipment is huge due to the collision problem and the wave problem of ships and large fish. Regarding the wave problem, patent text Offer 3 proposes to sink the marine production equipment.

The second reason is that the deep seawater lift-up device has low economic production efficiency despite the necessity of the above-mentioned marine environment resistance performance. Even if a part of the cost can be recovered by producing and selling useful marine life using the lifted deep ocean water, the marine production equipment can withstand the above-mentioned collision problems and wave problems of ships and large fish. It is difficult to cover the installation and maintenance costs of

As mentioned above, deep-sea water lift-up devices as carbon dioxide-consuming ocean production devices need to be economically improved at the current technology level. The economic improvement depends on using the equipment for as long as possible and increasing the economic effect per unit cost (including the economic value of carbon footprint).

From this point of view, the technology for the upward deflection in the ocean current direction of the middle ocean layer by the inclined plate arranged in the middle ocean layer proposed in Patent Document 1 is the middle layer released upward from the oblique plate. The problem is that the velocity energy in the rising direction of the ocean current rapidly disappears immediately after being discharged from the oblique plate as a vortex or turbulent flow due to contact with the powerful ocean current that flows horizontally, However, it was difficult to reach the surface of the ocean several hundreds of meters above the ocean. In addition, the method of lifting the deep ocean water by indirectly heating the top of the cylinder with ocean surface water proposed in Patent Document 2 is used to increase the flow rate of the deep ocean water to be lifted up. Because it is necessary to greatly increase the amount of heat transferred to the deep ocean water, and to the indirect heat exchanger of the ocean surface layer, the unique marine environmental problems (including collision problems, wave problems (including tornadoes) ))) Must be taken into account, making large-scale practical application difficult.

Furthermore, in order to improve the economic efficiency of the deep sea water lift-up device, it is conceivable to arrange a large-scale fish holding device. There was also a problem of the above marine environment problem. Although it is beneficial to sink the marine production equipment in order to avoid damage caused by waves, sudden changes in weather are common in the ocean, making it difficult to manage the sedimentation of the marine production equipment. Disclosure of the invention An object of the present invention is to provide an offshore production device and a maintenance device thereof that can solve the above difficult problems and are easy to construct and maintain.

A first invention for solving the above-mentioned problems is a marine production apparatus arranged at least in the surface layer of the ocean, a deep water outlet opening in the surface layer of the ocean through which the ocean current flows, and a quiet port in the deep layer of the ocean. A deep water inflow port, and a cylindrical part that is disposed between the surface layer part and the deep layer part and pumps the deep sea water flowing in from the deep water inflow port upward, and then discharges it from the deep water outlet. A deep water urging device connected to a deep water flow inlet and a deep water flow outlet of the water pump to urge the deep sea water in the water pump upward based on the energy of the sea current; And a movement restricting device for restricting movement of the water pump and the deep water urging device. In other words, the present invention lifts the deep ocean water in the pumping pipe by applying the energy of the sea current to the pumping mechanism provided in the pumping pipe standing in the ocean current. In this way, almost inexhaustible ocean current energy can be used to lift the deep ocean water in the pumping pipe, so the deep ocean water can be lifted up to the ocean surface at low cost and efficiently with a simple device. Can be used.

In a preferred embodiment, the ocean surface layer refers to a depth of less than 50 meters, and the ocean depth refers to a depth of 1550 meters or more, more preferably 20.0 meters or more. In a preferred embodiment, the movement restricting device is a rope having one end fixed to the seabed. In addition, a base that is arranged on the seabed and that fixes the bottom of a rigid pumping pipe can also constitute this movement restriction device. This rope can be fixed to the seabed through a damper device in order to reduce the influence of wave force acting on the upper part of the current-increasing pipe and pumped-up pipe. In a preferred embodiment, the apparatus has a seaweed growing device arranged behind the deep water outlet of the pumping pipe to grow seaweed. This seaweed growing device is composed of a net extending behind the deep water outlet of the pumping pipe. The opening of this net can be very large. As a result, solar energy and carbon dioxide can be efficiently recovered in the ocean surface layer. In a preferred embodiment, it has a fish tank that is disposed behind the deep water outlet of the pumping pipe and holds fish and shellfish inside. In this way, since a large amount of plankton can be supplied to the fish tank, it is possible to increase the production of the necessary types of fish while minimizing the fish-holding feed. A fish tank can be composed of an underwater space covered by a net, for example. Preferred embodiment The fish tank can also serve as a seaweed growing device. In other words, the net constituting the fish tank can be used as a seaweed root fixing member.

In a preferred aspect, the deep water urging device connects the intake port disposed in the deep layer portion and opening in a direction to receive the dynamic pressure of the ocean current, and the intake port and the deep water inlet port of the pumping pipe. A connecting tube portion that narrows from the intake port toward the deep water inlet of the pumping pipe. In this way, the dynamic pressure of the ocean current can be increased and acted on the deep water inlet of the pumping pipe, and a large amount of deep ocean water can be lifted with a simple mechanism.

In a preferred aspect, the deep water urging device includes a water outlet that is disposed in the surface layer portion and opens in a direction not subjected to the dynamic pressure of the ocean current, the water outlet, and a deep water outlet of the pump pipe. And a connecting cylinder part for connecting the two. In this way, deep ocean water in the connecting cylinder is sucked toward the water discharge port due to the ejector effect of the ocean current around the water discharge port, so a large amount of deep sea water can be lifted up with a simple mechanism. Can do. In a preferred aspect, the deep water urging device includes an ocean current inlet that is arranged in the surface layer portion and into which the ocean current flows in, and an ocean current outlet from which the ocean current flows out. A current intensifier pipe that speeds up the current and lowers the internal water pressure relative to the external water pressure, and the water outlet communicates with the current intensifier pipe. In this way, the pressure reduction effect of the deep water outlet of the pumping pipe can be improved, so that the deep sea water lift-up capability can be improved. In the ocean current accelerating pipe, the ocean current flowing from the ocean current inlet is accelerated and depressurized by the nozzle structure. In this way, the lift-up capability of deep ocean water can be improved with a simple static structure. In a preferred embodiment, the pumping pipe has a substantially fish-shaped cross section. The fish-shaped section head is located upstream of the ocean current and the tail is located downstream of the ocean current. As a result, the resistance of the pumping pipe against the ocean current can be greatly reduced, so that the cost of a movement regulating device that regulates the movement of the pumping pipe due to the ocean current, such as anchors and ropes, can be significantly reduced. In a preferred embodiment, the pumping pipe is configured by joining two butterfly-shaped pipes having a semi-fish cross section. This facilitates the production of the pumping pipe. In a preferred embodiment, the pumping pipe has a specific gravity of less than 1. As a result, it is possible to satisfactorily prevent the horizontal direction of the pumped pipe from being pushed by the ocean current. In a preferred embodiment, the current intensifier tube has a specific gravity of less than 1. This will cause the low The ocean current intensifier tube can be easily held at a predetermined depth.

In a preferred embodiment, the deep water outlet of the pumping pipe discharges the deep water upward from the horizontal direction. In this way, even if the deep water outlet at the upper end of the pumping pipe is placed deeper than the sea surface, the deep sea water can reach near the sea surface where the amount of solar radiation is large. It is possible to prevent damage to the pumping pipe, etc.

In a preferred embodiment, the fish tank has a fish tank that extends behind a deep water outlet of the pumping pipe, and the fish tank has a rigid structure that extends substantially perpendicular to the ocean current direction so that the ocean current can flow into the upstream of the ocean current. A rigid wall portion on the upstream side, a rigid wall portion on the downstream side of a rigid structure that extends substantially perpendicular to the ocean current direction so that the ocean current can flow out on the downstream side of the ocean current, and the rigid wall portions connected to each other to extend in the ocean current direction. Existing net. In this way, a large-scale fish tank can be constructed while reducing the effects of ocean currents and waves on the fish tank.

In a preferred aspect, a sensor installed near the upper part of the pumping pipe to detect the approach of a large obstacle, an alarm device installed near the upper part of the pumping pipe to issue an alarm, and an output signal of the sensor And a control device that instructs the warning device to output an alarm when the approach of the large obstacle is detected. Large obstacles include ships and large fish. As a sensor for detecting a large obstacle, an underwater ultrasonic sensor known as a sonar can be used. As an alarm, radio, light emission, airborne sound or underwater sound can be used. In this way, it is possible to reduce the probability that a ship or large fish will collide with the pumped pipe and damage it. In this way, the power consumption of the alarm device can be reduced in the ocean where power production is not easy.

A second invention that solves the above-described problem is a marine production apparatus that is disposed at least in the surface layer of the ocean, and includes a fish-holding space partition that has a large number of openings and partitions an internal fish-holding space; A fish escape prevention device is provided that is fixed to the fish holding space partition and emits sound waves toward the periphery of the fish holding space. In this way, it is possible to realize a large-scale fish tank while reducing the necessary amount of nets to which marine organisms adhere and damage caused by waves. As the directional sound wave, a frequency with high fish repellent effect such as an ultrasonic wave is suitable.

In addition, you may use an electricity supply apparatus as a fish escape prevention apparatus. This energization device is It has a pair of electrodes arranged with a predetermined gap in the opening, and a direct current or an alternating current is passed between the electrode pairs to prevent fish from approaching. In this way, net replacement costs can be reduced. The electric power required to generate sonic energy can be produced using ocean current and wave energy. To further explain, when a marine fish holding layer is formed by surrounding a marine area with a fine-grained fishing net, for example, several kilometers in radius, the fishing net is broken by waves and driftwood, or marine organisms adhere to the fishing net. As a result, there is a problem that the fishing net sinks. In addition, when this fishing net is held in the ocean current by a rope fixed at one end to the seabed, the entire ocean current resistance acting on the fishing net acts at the junction between the rope and the fishing net, and the upstream portion of the fishing net also It is necessary to withstand the ocean current drag acting on the downstream part of the fishing net in addition to the ocean current defense acting on itself. In other words, when a large marine fish tank is stationary in the ocean current, the strength of the fishing net needs to be significantly increased, which increases installation and replacement costs. On the other hand, according to the present invention, since the fishing net can have a simple structure, the damage and fatigue of the fishing net due to the ocean current anti-cave wave energy are greatly reduced, and the installation and replacement costs are greatly increased. Can be reduced.

In a preferred embodiment, the fish escape prevention device can output the sound wave or current steadily and completely at a constant interval. For example, it is possible to output only 0.1 second in 5 seconds. As a result, the required power can be greatly reduced. In addition, a large number of ultrasonic radiation devices and electrode pairs arranged around the fish holding space compartment as a fish escape prevention device can output sound waves or currents simultaneously, but at different timings. . In this way, the electrical sample can be reduced in size. It can also have a lasting effect on fish in the fish holding space compartment.

In a preferred embodiment, the structure constituting the marine production apparatus is a rope, and a large number of ultrasonic radiation devices provided at predetermined intervals are provided in the mouth. Each ultrasonic radiation device emits directional ultrasonic waves so as to surround the fish holding space. In addition, the structures that make up the marine production equipment are arranged in parallel with a predetermined distance from each other, and each is a conductive rope with electrodes arranged at regular intervals. A voltage is applied between the electrodes of the pair of ropes. This causes the current to flow in the seawater between the electrodes, and the fish avoids this current. In this way, the net part directly under the sea surface is subject to great fatigue due to waves. In a preferred embodiment, a fish escape detection sensor that is fixed to the fish holding space compartment and detects the escape behavior of the fish from the fish holding space, and an output of the fish escape detection sensor And a control device that commands the operation of the fish escape prevention device when the escape behavior of the fish is detected based on the signal. In this way, it is possible to realize an inexpensive and large-capacity fish tank while saving power in the ocean where stable power production is not easy. A normal ultrasonic fish finder can be used as the fish escape detection sensor. A sound emitter can also serve as part of a sound sensor. Net replacement frequency can be reduced. It is possible to allow the fish to enter without radiating this powerful ultrasonic wave or current when the fish enters the fish tank in the net, but there is a problem that harmful fish such as sea bream enter the fish holding space. Arise.

A third invention for solving the above-mentioned problems is a marine production apparatus arranged at least in the surface layer of the ocean, a sensor for detecting the magnitude of wave energy and the approach of a large obstacle, and the sinking of the marine production apparatus. And a sedimentation control device that commands the sedimentation device to settle in at least one of a case where it is determined that the wave energy exceeds a predetermined threshold and a case where it is determined that the large obstacle has approached, It is characterized by having As a sensor for detecting the magnitude of wave energy, for example, a pressure sensor installed on the surface of an underwater structure can be employed. As a result, when waves are large or large obstacles are approaching, the underwater structure such as a fish tank is submerged to prevent its breakage, and when the waves are small, the pipe is raised. It can release deep ocean water to the ocean surface where solar energy density is high, and can raise the fish tank to the ocean surface where abundance of plankton is produced. The settling force of the settling device can be generated by the ocean current force acting on the upper part of the pumping pipe and the wings installed in the current speed increasing pipe. In other words, by adjusting the angle between the ocean current direction and the chord direction of the wing (so-called angle of attack), the wing resistance and lift of the wing subjected to the ocean current change, so Can be adjusted. The change in the angle of attack can be realized, for example, by the displacement of the center of gravity due to the movement of fluid contained in the upper part of the ocean current intensifier pipe or pump pipe or in the wing. In addition, it can be realized by adjusting the buoyancy acting on the upper part of the pumping pipe and the ocean current speed increasing pipe, or by adjusting the rotation amount of the rope winder to adjust the length of the rope that fixes the current speed increasing pipe to the seabed. it can.

Sensors that detect the magnitude of wave energy include the top of ocean current boosters and pumps. A pressure sensor arranged in the section can be used. When the wave energy acting on these pipes is large, the pressure fluctuation detected by the pressure sensor becomes large. Therefore, when the pressure fluctuation exceeds a predetermined level, it can be determined that the wave is large. In addition, the average pressure detected by this pressure sensor is proportional to the depth of the sensor from the sea level, so the amount of sedimentation can also be detected. The marine production apparatus according to the second aspect of the invention can also be used for sacrifice. As a sensor for detecting the approach of a large obstacle, an underwater ultrasonic distance measuring device such as a normal sonar can be used. Brief Description of Drawings

FIG. 1 is a schematic vertical side view showing a deep sea water lift-up device according to an embodiment. Fig. 2 is a schematic vertical sectional view of the water intake device.

Fig. 3 is a schematic horizontal sectional view of the water intake device.

Fig. 4 is a schematic front view of the upper half of the water intake device as seen from the front.

Fig. 5 is a schematic horizontal cross-sectional view of a pumping pipe.

Fig. 6 is a schematic vertical sectional view of the water discharge device.

Fig. 7 is a schematic partial front view of the water discharge device.

Fig. 8 is a block diagram showing an alarm device for avoiding access to ships or large fish.

Fig. 9 is a block diagram showing the settling device of the deep sea water lift-up device. FIG. 10 is a schematic perspective view of a fish tank and seaweed growing apparatus.

FIG. 11 is a schematic plan view showing a fish escape prevention device.

FIG. 12 is a schematic front view showing a part of the side wall of the fish escape prevention device.

FIG. 13 is a block diagram showing an ultrasonic radiation device which is a fish escape prevention device.

BEST MODE FOR CARRYING OUT THE INVENTION

A preferred embodiment of the above-described marine production apparatus of the present invention will be described below. However, the present invention is not limited to the following embodiments.

(Overall structure)

FIG. 1 is a schematic diagram for explaining the marine production apparatus of the present invention. This marine production equipment Is a deep sea water lift-up device, which has a water intake device 1, a pumping pipe 2, a water discharge device 3, and a rope (movement restriction device) 4. Has been placed. The lower end of the rope 4 is fixed to an anchor (not shown) fixed to the seabed, and the upper end of the rope 4 is fixed to the water intake device 1 and the water discharge device 3. 5 is the ocean surface, 6 is the ocean current, and the arrow indicates the direction of the ocean current.

The water intake device 1 is disposed in the deep part of the ocean as a deep water urging device. In this specification, the seawater area below 50 meters above sea level is called the surface layer, and the seawater area deeper than 200 meters below sea level is called the deep layer. Deep seawater is called deep water or deep ocean water. The specific gravity of the intake device 1 is less than 1, and the intake device 1 is subjected to a force F 3 that is a combination of buoyancy F 1 and anti-flow F 2 against ocean current 60. In this specification, buoyancy refers to the difference in force obtained by subtracting gravity from true buoyancy. The water intake device 1 has a water intake 1 1 that opens toward the upstream side of the ocean current 60. Deep water 6 0 a that flows into intake port 1 1 is pushed into the pumping pipe 2 through the inside of the intake port 1 1 by its own dynamic pressure, rises inside the pumping pipe 2, and is discharged into the water discharge device 3 To reach.

The total density of pumping pipe 2 including internal deep water 60 a is less than 1. The intake device 1 is subjected to a force F6, which is a combination of buoyancy F4 and anti-current F5 against ocean current 60. By making the direction of the force F 6 substantially equal to the length direction of the pumping pipe 2, the bending force applied to the pumping pipe 2 can be reduced, so that the bending rigidity of the pumping pipe 2 can be reduced. 2 1 is the deep water inlet of the pump 2, and 2 2 is the deep water outlet of the pump 2. The water discharge device (sea current intensifier tube) 3 is a so-called ejector device disposed in the surface layer of the ocean, and constitutes a deep water urging device referred to in the present invention. The specific gravity of the water discharger 3 is less than 1, and the water discharger 3 is subjected to a force F9, which is a combination of the buoyancy F7 and the resistance F8 against the ocean current 60. The water discharge device 3 has a current outlet 31 that opens toward the upstream side of the ocean current 60 and a current outlet 3 2 that opens toward a substantially downstream side of the ocean current 60. The ocean current flowing into the water discharge device 3 from the ocean current inlet 31 is decompressed and accelerated by the nozzle structure formed inside the water discharge device 3. The outlet portion of the water discharge device 3 may have a diffuser structure. Since the deep water outlet 2 2 of the pump 2 is connected to the decompressed interior of the water discharge device 3, the deep ocean water in the pump 2 is transferred from the deep water outlet 2 2 of the pump 2 to the inside of the water discharge device 3. Sucked out. The current outlet 3 2 of the water discharge device 3 blows the ocean current taken from the inlet 3 1 and the deep ocean water drawn from the pump pipe 2 obliquely upward. put out. This is because the nutrients are blown directly under the sea surface where plankton production efficiency is high, and the influence of waves on the ocean current intensifier is reduced.

The direction of the rope 4 connected to the water intake device 1 is defined by the direction of the force F 3, and the direction of the rope 4 connected to the water discharge device 3 is defined by the direction of the force F 9. It is economical that the rope 4 connected to the intake device 1 and the rope 4 connected to the water discharge device 3 are connected to the same anchor. The pump pipe 2 may also be fixed with the rope 4. The structure of the water intake device 1 will be described with reference to FIGS. 2 is a schematic vertical cross-sectional view of the water intake device 1, FIG. 3 is a schematic horizontal cross-sectional view of the water intake device 1, and FIG. 4 is a schematic front view of the upper half of the water intake device 1 as viewed from the front.

Intake device 1 includes intake port 1 1 that opens toward the upstream side of ocean current 60 so that the dynamic pressure of ocean current 60 is applied to pump 2 as much as possible, and from this intake port 1 1 to the rear. A gradually narrowed pyramid-shaped trumpet tube portion 12, a guide blade 13 extending upward from the upper end surface of the trumpet tube portion 12, and a guide blade extending downward from the lower end surface of the trumpet tube portion 1 2 1 4 And have. The guide vanes 1 3 and 1 4 are arranged almost parallel to the direction of the ocean current due to the ocean current, and the ocean current with the maximum flow is pushed into the intake 1 1. In other words, the guide wings 1 3 and 1 4 have the same function of maintaining the attitude of the water intake device 1 as the vertical tail of an airplane. As with the horizontal tail of an airplane, you can install a guide wing that extends horizontally in the water system 1. Thereby, the posture of the water intake device 1 is further stabilized. The attitude of the intake device 1 is defined by the buoyancy F 1 of the intake device 1, the anti-load F 2, the force applied to the intake device 1 from the pump pipe 2, the pulling force of the rope, and the point of action of these forces. However, the design of these forces is a mechanical problem that can be easily solved, and the attitude of the intake 1 is maintained to maximize the intake of deep sea water into the intake 1 1. Can. The cross-sectional area in the direction perpendicular to the ocean current direction of the lava tube portion 1 2 is continuously narrowed backward, and the outlet of the trumpet tube portion (connecting tube portion) 1 2 is the deep water inlet of the pumped tube 2 2 1 Are connected to As a result, the speed of deep ocean water entering the pumping pipe 2 from the deep water inlet 21 of the pumping pipe 2 increases.

The structure of the pumping pipe 2 will be described with reference to FIG. FIG. 5 is a schematic horizontal cross-sectional view of the pumping pipe 2. The pumping pipe 2 is composed of a tube made of polyethylene-coated steel sheets with fastening ribs at both ends, and the horizontal cross section of the pumping pipe 2 has a fish shape. This greatly reduces drag against ocean currents. The pump pipe 2 is shown in section A—A in Fig. 5. It is made by fastening two half-fish-shaped plates with a split shape. 2 3 is a rib arranged in the pumping pipe 2, and the ribs 2 3 maintain the shape of the pumping pipe 2 against the negative pressure applied to the pumping pipe 2. In this way, it is possible to transport semi-fished plates in a stacked manner, thereby reducing transportation costs.

The structure of the water discharge device 3 will be described with reference to FIG. 6 is a schematic vertical sectional view of the water discharge device 3, and FIG. 7 is a schematic partial front view of the water discharge device 3 seen from the upstream side of the ocean current.

The water discharger 3 has a current-increasing pipe 33 that communicates an upstream current inlet 31 and a downstream current outlet 32. The upstream portion of the ocean current speed increasing pipe 3 3 has a nozzle portion 3 4 that narrows from the ocean current inlet 3 1 to the downstream side. The nozzle portion 3 4 increases the speed of the ocean current flowing from the ocean current inlet 31, and the inside of the nozzle portion 3 4 is depressurized by this speed increase. An air chamber 35 for generating buoyancy and a deep water chamber 36 for accumulating deep ocean water are formed above the nozzle portion 34. The nozzle part 3 4, the air chamber 3 5, and the deep water chamber 3 6 extend long in the horizontal direction perpendicular to the direction of the ocean current as shown in FIG. The lower end of the deep water chamber 3 6 is connected to the deep water outlet 2 2 of the pump 2. At the deep water outlet 22 of the pumping pipe 2, a water discharge cylinder part 3 7 protruding into the nozzle part 3 4 is fixed, and a water discharge opening 3 8 is provided at the downstream end of the water discharge pipe part 37.

The ocean current 6 0 flowing into the nozzle 3 4 from the ocean current inlet 3 1 is accelerated and depressurized due to the reduction in the cross-sectional area of the nozzle 3 4 and passes through the outer periphery of the water discharge cylinder 3 7, and then the rear It is bent obliquely upward and discharged obliquely upward from the ocean current outlet 32. Due to the pressure reduction of the nozzle part 34, the deep water 60 a in the water discharge cylinder part 37 is sucked backward from the water discharge port 38. As a result, the deep water chamber 36 flows from the deep water outlet 22 of the pumping pipe 2 through the deep water chamber 36 into the water discharge cylinder portion 37. Denoted at 39 is a deflecting blade that is arranged near the deep water outlet 22 and deflects the ocean current and the deep water 60a exiting from the nozzle 34 and obliquely upward.

An alarm device 5 for avoiding the approach of a ship or large fish to the above-mentioned deep sea water lift-up device will be described with reference to FIG. One or more alarm devices 5 are fixed to the upper end of the water discharge device 3 and periodically radiate ultrasonic waves in the direction of the water tank, and detect ultrasonic waves reflected from ships and large fish. Based on the ultrasonic signal received by the ultrasonic sensor 51, the computing device 52 that determines the approach of the ship or large fish by calculating the size and position of the ship or large fish, and the ship or large fish Check for approach It has alarm devices 5 3 and 5 4 that radiate ultrasonic energy or audible frequency acoustic energy into the water and emit sound and flashing signals from buoys floating on the sea surface. In order to supply power to these devices, the water discharger 3 is equipped with a generator connected to a turbine driven by ocean currents, various batteries including seawater batteries, and a wave energy generator. It is preferable that the generated power is temporarily stored in the battery. Since the detection principle of the ultrasonic sensor 51 can be the same as that of a conventionally known ultrasonic fish finder, further explanation is omitted. As a result, a warning is issued to the other party when a ship or a large fish approaches, and collision with the deep sea water lift-up device can be avoided. Instead of issuing an alarm, the subsidence device described below may be operated to cause the deep sea water lift-up device or a device attached thereto to sink.

The settling device 6 of the above-mentioned deep sea water lift-up device will be described with reference to FIG. This settling device 6 has a pressure sensor 61, a calculation device 6 2, a hoisting motor 6 3, and a rope take-up drum 6 4. These devices 6:! To 6 4 are fixed to the water discharge device 3. It has been determined. The pressure sensor 61 is fixed to the upper end surface of the water discharge device 3 or a rod body protruding upward, and detects the water pressure.

The arithmetic device 62 detects the magnitude of the fluctuation of the water pressure detected by the pressure sensor 61, that is, the absolute value of the difference between the minimum value and the maximum value of the water pressure within a predetermined time. If the constant threshold value is exceeded, it can be determined that the waves are large. In other words, if the wave is large, the amount of fluctuation in the detected pressure of the pressure sensor 61 increases, so that the wave energy can be estimated using this phenomenon. Further, when the water discharge device 3 sinks, the fluctuation of the detected pressure acting on the pressure sensor 61 decreases, so that the water discharge device 3 can stop settling. Further, if the absolute value of the difference becomes smaller than the second threshold value, the water discharge device 3 is raised because the wave is small. As a result, only when the waves are large, it is possible to sink the water discharge device 3 and prevent its breakage. In addition, the depth of the water discharge device 3 can be determined based on the average value of the pressure detected by the pressure sensor 61. When it is determined that the wave is large, the arithmetic device 62 drives the hoisting motor 63 and winds the rope hoisting drum 64 connected to the hoisting motor 63. As a result, the rope scraping drum 6 4 scrapes the rope 4 and the water discharge device 3 sinks. When it is determined that the wave is small, the arithmetic device 6 2 rotates the winding motor 6 3 in the reverse direction and pulls out the rope 4 from the rope winding drum 6 4. This The water discharge device 3 is raised by its own buoyancy. The hoisting motor 63 preferably has a rope lock mechanism for restraining the rope 4 when it does not rotate. It is preferable that the water intake device 1 is also moved up and down in synchronism with the same principle as when the water discharge device 3 is moved up and down.

As a modification of the settling device 6, the water discharge device 3 may be provided with a rotatable horizontal blade. When this horizontal wing is rotated, the resistance and lift that the horizontal wing receives from the ocean current changes, so the direction of the force acting on the water discharge device 3 changes and the subsidence depth can be adjusted. Instead of rotating the horizontal blade, a rope winder may be used to lengthen the upstream end rope 4 of the water discharge device 3 or shorten the downstream end rope 4. As a result, the angle of attack of the water intake device 1 with respect to the ocean current changes, so that the depth of the water discharge device 3 can be adjusted by the same action. Note that a damper may be provided on the rope 4 in order to mitigate the wave energy acting on the water discharge device 3 and the like.

As a modification of the settling device 6, a sonar (ultrasonic underwater distance detection device) may be employed as the pressure sensor 61. This sona is used to measure the position of ships and large fish around the deep sea water lift-up device. Arithmetic device 62 determines the possibility of ships and large fish approaching and colliding from changes in the measured position, and commands the submersion of the deep sea water lift-up device when the collision probability is high. This subsidence control can be used not only for the deep ocean water lift-up device but also for the sedimentation control of fish tanks installed in the vicinity of the deep ocean water lift-up device.

On the downstream side of the water discharge device 3, a fish tank and seaweed growing device 7 which is an ocean production device is arranged. The fish tank and seaweed growing apparatus 7 will be described with reference to FIG. FIG. 10 is a schematic perspective view of the fish tank / seaweed growing device 7. The holding and settling control of the fish tank / seaweed growing device 7 is the same as that of the water discharging device 3, and the description thereof is omitted.

The fish tank and seaweed growing device 7 has a rigid wall portion 7 1 on the upstream side of a rigid structure that extends substantially perpendicular to the direction of the ocean current so that the ocean current can flow in on the upstream side of the ocean current 60, and on the downstream side of the ocean current 60. The rigid wall 7 2 on the downstream side of the rigid structure that extends substantially at right angles to the ocean current direction and the net 7 3 that connects the rigid wall portions 7 1 and 7 2 and extends in the ocean current direction Have 'The rigid wall portion 7 1 is formed by assembling a number of polyethylene-coated steel pipes 7 1 1, 7 1 2, 7 1 3 extending in a direction perpendicular to the ocean current direction. 7 1 1 is a polyethylene-coated steel pipe extending in the horizontal direction, 7 1 2 is a polyethylene-coated steel pipe extending in the vertical direction, and 7 1 3 is diagonal A polyethylene-coated steel pipe extending in the direction.

The rigid wall portion 7 2 is formed by assembling a number of polyethylene-coated steel pipes 7 2 1, 7 2 2, 7 2 3 extending in a direction perpendicular to the ocean current direction. 7 2 1 is a polyethylene-coated steel pipe extending in the horizontal direction, ₇ 2 2 is a polyethylene-coated steel pipe extending in the vertical direction, and 7 2 3 is a polyethylene-coated steel pipe extending in an oblique direction.

Polyethylene-coated steel pipe 7 1 1 of rigid wall 7 1 and polyethylene-coated steel pipe 7 2 1 of rigid wall 7 2 are connected by a number of ropes 7 3 0, and polyethylene-coated steel pipe of rigid wall 7 1 7 1 2 and the polyethylene-coated steel pipe 7 2 2 of the rigid wall portion 7 2 are connected by a number of ports 1 3 1. Each rope 7 3 0 is connected by a horizontal rope 7 3 2, and each rope 7 3 1 is connected by a horizontal rope 7 3 3 to form a net 7 3. The rigid walls 7 1 and 7 2 and the net 7 3 constitute a fish tank / seaweed growing device 7 having a fish holding space inside. The upstream rigid wall portion 71 is fastened to an anchor at the seabed by a rope or fastened to the water discharge device 3 in the same manner as the water discharge device 3 of the deep sea water lift-up device. The net 73 and the downstream rigid wall 7 2 are disposed downstream of the rigid wall 71 by the ocean current. The mouth group 7 3 0 constituting the bottom of the fish tank / seaweed growing device 7 also serves as a seagrass fixing base on which the roots of seagrass are established.

The fish escape device installed in the fish tank / seaweed growing device 7 will be described with reference to FIGS. Fig. 1 1 is a schematic plan view showing a fish escape prevention device provided along the side wall of the fish tank and seaweed growing device 7 (part of the fish holding space compartment) 70. Fig. 1 2 is a fish escape prevention device. It is a model front view which shows a part of side wall part of an installation.

Reference numeral 8 denotes a directional ultrasonic radiation device fixed to the side wall portion 70 of the fish tank / seaweed growing device 7, and power is supplied from a cable extending along the side wall portion. The arrow indicates the direction of ultrasonic radiation. That is, the ultrasonic radiation device 8 radiates ultrasonic waves in the extending direction of the side wall part 70. Accordingly, it is possible to prevent the fish from escaping from the fish holding space S inside the fish tank / seaweed growing device 7 beyond the side wall portion 70 of the fish tank / seaweed growing device 7 to the outside. A similar structure is also arranged on the upper and lower end surfaces of the fish holding space S as the remainder of the fish holding space compartment, thereby preventing fish from escaping from the fish holding space S to the outside. The In addition, fishing net maintenance costs can be reduced due to the high cost of attaching and replacing marine organisms. The arrangement of the ultrasonic radiation device 8 on the upper end surface of the fish holding space S can be omitted. Also, instead of the ultrasonic radiation device 8, An electrode may be provided on each of the two ropes arranged in parallel, and a current may be passed between these electrodes to prevent fish from escaping. 7 7 is a rope that forms the side wall of the fish tank / seaweed growing device 7. Instead of ultrasonic waves, sound waves of a specific wavelength, for example, iruka killer whales may be emitted. Alternatively, a large number of electrodes may be provided on a single rope at a predetermined interval, and energization may be performed between adjacent electrodes.

The control of the ultrasonic radiation device 8, which is a fish escape prevention device, will be described with reference to the block diagram shown in FIG.

The fish escape prevention device 9 includes a sonar 9 1 for detecting the presence of fish in the side wall portion 70 of the fish tank and seaweed growing device 7 and the vicinity of the upper end surface and the lower end surface, and a fish holding space based on the output signal of the sonar 9 1. It is determined whether or not there are fish in the vicinity of the compartment, and if it is determined that there is a fish in the vicinity of the fish holding space compartment, the control device 9 2 that instructs the ultrasonic radiation device 8 to emit ultrasonic waves, And a sound wave emitting device 8. Sonar 9 1 emits directional ultrasound,

The ultrasonic wave reflected from the object is detected and converted to a signal voltage, which is output to the controller 92. The control device 92 determines that there is a fish in the vicinity of the fish holding space partition when the magnitude of the signal voltage corresponding to the reflected ultrasonic wave within a predetermined time from the radiation time exceeds a predetermined level. Command the radiation device 8 to emit ultrasonic waves. However, because there is an ultrasonic wave that is fixedly reflected due to the presence of ropes and nets, the controller 92 can subtract the signal voltage corresponding to the reflected ultrasonic wave of a certain magnitude from the input signal voltage. Good. This makes it possible to realize an inexpensive and large-capacity fish tank while saving power in the ocean where stable power production is not easy.

The amount of reflected ultrasound from a fish far away from the sonar 9 1 is smaller than the amount of reflected ultrasound from a nearby fish, so the control unit 9 2 depends on the distance from the sonar 9 1 to the fish. The input signal voltage (amount of reflected ultrasound) may be corrected. In addition, it is determined whether the fish is approaching the fish holding space compartment from the fish holding space, or approaching the fish holding space compartment from the external ocean based on the change in the position of the fish. You may stop and take the fish into the fish holding space. A large number of sonars 9 1 may be distributed and each sonar 9 1 may control only the nearby ultrasonic radiation device 8. 651

PCT / JP2006 / 304541 Industrial applicability

Can economically operate equipment that economically prevents global warming

Claims

The scope of the claims

1. In marine production equipment placed at least on the surface of the ocean,

A deep water outlet opening in the surface layer of the ocean through which an ocean current flows, a deep water inlet opening in the deep layer of the ocean, and an inflow from the deep water inlet arranged between the surface layer and the deep layer portion A pumping pipe having a cylindrical portion that is discharged from the deep water outlet after pumping the deep sea water upward.

A deep water urging device connected to a deep water inlet and a deep water outlet of the pumping pipe to urge the deep seawater in the pumping pipe upward based on energy of the ocean current; and the pumping pipe and the deep water A movement restriction device for restricting movement of the biasing device;

A marine production apparatus comprising:

2. The marine production apparatus according to claim 1,

The deep water urging device includes: a water intake opening disposed in the deep water portion and opening in a direction to receive the dynamic pressure of the ocean current; and a connecting tube portion connecting the water intake and the deep water water flow inlet of the pumping pipe. The connecting cylinder part is an offshore production device that narrows from the intake port toward the deep water inlet of the pumping pipe.

3. The marine production apparatus according to claim 1,

The deep water urging device is connected to the water outlet that is disposed in the surface layer portion and opens in a direction not receiving the dynamic pressure of the ocean current, and a connecting cylinder that connects the water outlet and the deep water outlet of the pumping pipe. And a marine production apparatus.

4. In the marine production apparatus according to claim 3,

The deep water urging device has a current inlet that is arranged in the surface layer and into which the ocean current flows, and a current outlet from which the ocean current flows out, and the inner ocean current is accelerated more than the outer ocean current. And an ocean current speed increasing pipe that lowers the internal water pressure relative to the external water pressure, wherein the water outlet is in communication with the current speed increasing pipe.

5. The marine production apparatus according to claim 1,

The pumping pipe is a marine production apparatus having a substantially fish-shaped cross section.

6. In the marine production apparatus according to claim 1,

A fish tank extending behind a deep water outlet of the pumping pipe, and the fish tank has an upstream stiffness of a rigid structure extending substantially perpendicular to the ocean current direction so that the ocean current can be introduced on the upstream side of the ocean current The wall and the downstream side of the rigid structure that extends at a right angle to the ocean current direction so that the ocean current can flow out at the downstream side of the ocean current A marine production apparatus comprising: a rigid wall portion; and a net extending in the ocean current direction by connecting the two rigid wall portions.

7. The marine production apparatus according to claim 1,

A sensor installed near the upper part of the pumping pipe to detect the approach of a large obstacle, an alarm device installed near the upper part of the pumping pipe and issuing an alarm,

A control device that instructs the alarm device to output an alarm when an approach of the large obstacle is detected based on an output signal of the sensor;

With marine production equipment.

8. In marine production equipment placed at least on the surface of the ocean,

A fish holding space partition body having a plurality of openings and partitioning a fish holding space in a buttock; and a fish escape prevention device that is fixed to the fish holding space partition body and emits sound waves toward the periphery of the fish holding space. A marine production apparatus comprising:

9. The marine production apparatus according to claim 8,

A fish escape detection sensor that is fixed to the fish holding space compartment and detects the escape behavior of the fish from the fish holding space;

A marine production apparatus comprising: a control device that commands operation of the fish escape prevention device when the fish escape behavior is detected based on an output signal of the fish escape detection sensor.

1 0. In the marine production apparatus according to claim 9,

The said control apparatus is a marine production apparatus which prohibits the operation | movement of the said fish escape prevention apparatus, when it detects that an external fish penetrate | invades into the said tank based on the output signal of the said fish escape detection sensor.

1 1. In marine production equipment placed at least on the surface of the ocean,

A sensor for detecting the magnitude of wave energy and the approach of a large obstacle, a settling device for sinking the marine production device,

A settling control device that commands the settling device to settling in at least one of a case where it is determined that the wave energy exceeds a predetermined threshold value and a case where it is determined that the large obstacle has approached;

A marine production apparatus comprising: