JPH07250586A - Apparatus for producing upwelling stream - Google Patents

Abstract

PURPOSE:To provide a readily installed apparatus, capable of surely upwelling bottom water to the surface layer without diffusing or diluting the water into a middle or an upper layer in a process for upwelling and further pumping up the water onto the land, simple in structure and manufacturable at a low cost. CONSTITUTION:This apparatus for producing an upwelling stream is obtained by providing a mooring rope 2 in the longitudinal direction on the outer surface of a guide pipe 1 formed from a cylindrical sheet, installing a buoy 6 at the top of the mooring rope 2 and a sinker 7 at the lower end thereof, opening an inflow port (1b) at the lower end into the bottom water of the sea bottom and further opening a discharge port (1c) at the top into the surface layer water in the photic surface layer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upwelling flow generator for transferring lower-layer seawater to the surface layer in ocean currents, tidal currents and the like.

[0002]

2. Description of the Related Art In recent years, in closed bays, eutrophication has progressed due to drainage from daily life, agriculture, industry, etc., and in summer the density of the sea surface has risen due to rising sea surface temperature, making it impossible to carry out mixed convection.
A thermocline occurs and becomes a stratified state. Then, the dissolved oxygen is consumed by the decomposition of the organic matter deposited on the seabed, and the bottom water of the oxygen-poor nutrient is formed. In this condition, when the shore wind blows, a shore flow occurs, the bottom water rises, and causes blue tide and red tide, causing damage such as death of seafood, which is an environmental problem.

In the open sea, ocean currents such as the Kuroshio current are used to cause deep water rich in nutrients such as phosphorus and nitrogen to rise up to the light surface layer near the sea surface where sunlight reaches, and the nutrients multiply phytoplankton. However, it has been proposed to form a good fishing ground that uses this as food for fish. JP 61-
Examples thereof include 88831, JP-A-62-32830, JP-A-1-60320, and JP-A-2-186927.

[0004] These are those in which a block having a tidal current shielding plate, a resistor, and a deflecting plate are installed as structures which become obstacles to flow on the seabed. Turbulence and eddy currents are generated to cause bottom water to flow.

[0005]

However, since the bottom layer water diffuses and dilutes throughout the middle and upper layers in the course of the spring flow,
It is difficult to reliably guide bottom water to the surface, and it is also difficult to concentrate and use bottom water. Incidentally, for example, Japanese Patent Laid-Open No. 63-
Japanese Patent Laid-Open No. 233737 and Japanese Patent Laid-Open No. 59-156231 disclose a configuration in which a bottom layer water is guided to the surface layer by using a pipe. Is complicated, difficult to install, and expensive.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional examples, and it is possible to positively upwell the bottom layer water to the surface layer without diffusing and diluting in the middle or upper layers during the upwelling process, and the structure is simple and the installation is easy. The purpose of the present invention is to provide an upwelling flow generator that can be manufactured at low cost and that can be pumped up to land.

[0007]

In order to achieve the above object, the present invention firstly provides a mooring line along the length direction on the outer surface of a flow guide tube formed of a cylindrical sheet, and the upper end of the mooring line. The essence is that a buoy is provided at the bottom and a sinker is provided at the lower end so that the inlet at the lower end opens into the bottom water of the seabed and the outlet at the upper end opens into the surface water of the light surface layer.

Secondly, in the flow guiding tube, a plurality of short cylindrical sheets having reinforcing holes at both ends are sequentially joined by aligning the positions of the reinforcing holes, and a link is fitted to the joined portions. The gist of the present invention is that the cord-shaped member is spirally wound around the link while penetrating the reinforcing hole, and short cylindrical sheets are sequentially connected to each other.

Thirdly, the gist of the mooring line is to be locked to a link provided in the flow guide pipe.

Fourthly, the gist of the present invention is to moor a floating frame with a net stretched to a buoy provided at the upper end of the mooring line.

Fifthly, the gist of the link is that a weight is provided at the one located at the inlet of the flow guiding tube and a float is provided at the one located at the outlet.

[0012]

According to the present invention as set forth in claim 1, the guide pipe is installed at a predetermined position from the sea bottom to the sea surface by the buoy provided at the upper end of the mooring line and the sinker at the lower end. Then, due to the tide of the tidal current, the bottom layer water is taken into the guide pipe from the lower end inlet port and discharged from the upper end outlet port into the surface water layer of the light surface layer. As a result, the bottom water can be surely guided to the surface layer with the simple flow guide tube formed of the cylindrical sheet.

According to the second aspect of the present invention, in addition to the above-mentioned function, the flow guiding tube is formed by connecting a plurality of short cylindrical sheets with a string-like member through the reinforcing hole and the link. It also has excellent strength.

According to the third aspect of the present invention, in addition to the above function, since the mooring line is fixed to the link, the flow guiding pipe is firmly fixed to the mooring line.

According to the fourth aspect of the present invention, in addition to the above function, a floating frame with a net stretched is moored to a buoy provided at the upper end of the mooring line, and bottom layer water flows into the floating frame. As a result, it can be used as a cage, and useful seaweeds and shellfish can be cultivated.

According to the present invention as set forth in claim 5, since the weight of the link holds the inlet of the flow guiding pipe in a vertical direction, the effective area of the inlet is not narrowed and the bottom layer water can flow in smoothly. In addition, the float can prevent the outlet of the flow guide pipe from hanging downward, so that the effective area of the outlet is not narrowed and the bottom layer water can be smoothly discharged.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view showing an embodiment of the upwelling flow generating device of the present invention, FIG. 2 is a side view of the same as above, and in the figure, 1 shows a flow guide tube formed of a cylindrical sheet. A mooring line 2 made of a chain or the like was provided on the outer surface of 1 along the length direction.

The flow guiding tube 1 has, for example, reinforcing holes 3 formed on both sides of a sheet having a predetermined width at a constant pitch, cut into a predetermined circumferential length of the flow guiding tube 1, and the cut pieces are formed into a cylindrical shape. To process.
A plurality of such short cylindrical sheets 1a are sequentially joined by aligning the positions of the reinforcing holes 3, and the links 4 are fitted on the outside of the joints to reinforce the cord-like members 5 such as nylon ropes. The link 4 was spirally wound while penetrating 3 and the short cylindrical sheets 1a were sequentially connected to form a long sheet. (Actually, the row of holes is not visible because it comes to the back side of the link 4, but in order to make it easier to understand, it is shown as staggered in FIG. 2.)

As a method for connecting the short cylindrical sheets 1a to each other, as shown in FIG. 2, when the number of the string-like members 5 is one, the reinforcing members 3 are formed from the reinforcing holes 3 and the other reinforcing holes 3 are provided. Although not shown, it is also possible to use two cord-shaped members 5 so that the cord-shaped members 5 can come out from all the reinforcing holes 3 and be wound around the links 4 in a spiral shape, though not shown. To be

Then, the top end of the link 4 located at the back muscle portion of the guide pipe 1 is fixed to the mooring line 2 by using a fastener 13 such as a creep, and the buoy 6 is attached to the upper end of the mooring line 2 and the lower end thereof. The sinker 7 is provided through the universal joint 14 to the end of the guide pipe 1 on the side where the sinker 7 is provided.
b and the end portion on the side where the buoy 6 is provided is the outflow port 1c.

Further, among the links 4, a weight 8 is provided at one located at the inflow port 1b of the flow guiding tube 1, and a float 9 is provided at that located at the outflow port 1c.

In addition, on the buoy 6 provided at the upper end of the mooring line 2,
The floating frame 11 on which the net 10 is stretched is moored by the mooring rope 12.

Next, usage and operation will be described. Set the length of the guide pipe 1 and mooring line 2 to about twice the water depth to the seabed where they are installed, sink sinker 7 on the seabed, float buoy 6 on the sea surface, and guide pipe 1 and mooring line 2 are installed in the sea.

In this state, the guide pipe 1 and the mooring line 2 are about 3
The inflow port 1b is installed at an angle of 0 degrees, and the lower part of the inflow port 1b is pulled downward by the weight 8 so that the inflow port 1b opens vertically at a right angle to the flow direction of the ocean current. The outflow port 1c is opened by the float 9 in an obliquely upward direction substantially perpendicular to the lengthwise direction of the flow guide tube 1.

Even when the guide pipe 1 is installed in the sea area where the ocean current is diverted, since the mooring line 2 is connected to the sinker 7 through the universal joint 14, the buoy 6
Turns around the sinker 7, and the mooring line 2 is not twisted. Further, the flow guide pipe 1 includes the reinforcing hole 3 and the link 4.
A plurality of short cylindrical sheets 1 by the string-shaped member 5 via
Since it is formed by bonding a, it is also excellent in strength.

Then, the bottom layer water of the seabed enters the inflow port 1b by the flow of the seabed, is taken into the guide pipe 1, and rises from the outflow port 1c at the upper end to the light surface layer. During this time, since the bottom layer water rises in the diversion pipe 1, the bottom layer water can be surely led to the surface layer without being diffused / diluted into the middle layer / upper layer during the upwelling process.

Further, the buoy 6 is moored with the rope 12 to the net 10
By mooring the floating frame 11 stretched over, the bottom layer water flowing out from the outlet 1c can be taken into the floating frame 11,
Due to the abundant nutrients contained in the bottom water, useful seaweed such as seaweed and kelp in the floating frame 11 and shellfish such as scallops and oysters 16
It will also be possible to farm.

The remaining nutrients that have passed through the floating frame 11 can be widely diffused to the surface of the sea, breed phytoplankton, promote the food chain, and breed seafood.

The floating frame 11 is evacuated by disconnecting it from the buoy 6 in case of typhoon or other storm.

By installing a submersible pump near the outlet 1c, the bottom layer water can be taken from the outlet 1c, and the bottom layer water can be used and studied on land.

[0031]

As described above, the upwelling flow generating apparatus of the present invention can reliably guide the bottom layer water to the surface layer with a simple guide pipe formed of a cylindrical sheet as long as it has a flow on the seabed. It is lightweight, has excellent strength, is inexpensive to construct, and can be installed both inside and outside the sea, and is easy to install, relocate, and remove.

Further, by inflowing the bottom layer water into the floating frame, it can be used as a cage, and it becomes possible to cultivate useful seaweed and aquaculture, and also has the function of purifying seawater and forming fishing grounds.

Further, the weight and the float provided on the link allow the inflow and outflow of the bottom layer water smoothly without narrowing the effective area of the inlet and the outlet of the guide pipe.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an upwelling flow generating apparatus of the present invention.

FIG. 2 is a side view of essential parts showing an embodiment of an upwelling flow generating apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Guide pipe 1a ... Cylindrical sheet 1b ... Inflow port 1c ... Outflow port 2 ... Mooring line 3 ... Reinforcing hole 4 ... Link 5 ... String member 6 ... Buoy 7 ... Sinker 8 ... Weight 9 ... Float 10 ... Net 11… Floating frame 12… Mooring rope 13… Fastener 14… Universal joint 15… Useful seaweed 16… Useful shellfish

Claims (5)

[Claims] 1. A mooring line is provided on an outer surface of a guide pipe formed of a cylindrical sheet along a length direction, a buoy is provided at an upper end of the mooring line, and a sinker is provided at a lower end thereof, and an inflow port at a lower end is provided at a bottom of the seabed. The upwelling flow generation device is characterized in that it opens in the bottom layer of the water, and the outlet at the upper end opens in the surface layer of the light surface layer. 2. The flow guide tube is formed by sequentially joining a plurality of short cylindrical sheets having reinforcing holes at both ends so that the positions of the reinforcing holes are aligned with each other. The upwelling flow generating device according to claim 1, wherein the strip-shaped member is spirally wound around the link while penetrating the reinforcing hole, and short cylindrical sheets are sequentially connected to each other. 3. The upwelling flow generation device according to claim 1 or 2, wherein the mooring line is locked to a link provided on the flow guide pipe. 4. The upwelling generator according to claim 1 or 3, wherein a floating frame having a net stretched is moored to a buoy provided at an upper end of the mooring line. 5. The upwelling flow generation device according to claim 2, wherein the link has a weight at the inlet of the flow guide tube and a float at the outlet thereof.